diff options
Diffstat (limited to 'portaudio/src/common')
25 files changed, 9845 insertions, 0 deletions
diff --git a/portaudio/src/common/pa_allocation.c b/portaudio/src/common/pa_allocation.c new file mode 100644 index 0000000..7e3298a --- /dev/null +++ b/portaudio/src/common/pa_allocation.c @@ -0,0 +1,242 @@ +/* + * $Id$ + * Portable Audio I/O Library allocation group implementation + * memory allocation group for tracking allocation groups + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Allocation Group implementation. +*/ + + +#include "pa_allocation.h" +#include "pa_util.h" + + +/* + Maintain 3 singly linked lists... + linkBlocks: the buffers used to allocate the links + spareLinks: links available for use in the allocations list + allocations: the buffers currently allocated using PaUtil_ContextAllocateMemory() + + Link block size is doubled every time new links are allocated. +*/ + + +#define PA_INITIAL_LINK_COUNT_ 16 + +struct PaUtilAllocationGroupLink +{ + struct PaUtilAllocationGroupLink *next; + void *buffer; +}; + +/* + Allocate a block of links. The first link will have it's buffer member + pointing to the block, and it's next member set to <nextBlock>. The remaining + links will have NULL buffer members, and each link will point to + the next link except the last, which will point to <nextSpare> +*/ +static struct PaUtilAllocationGroupLink *AllocateLinks( long count, + struct PaUtilAllocationGroupLink *nextBlock, + struct PaUtilAllocationGroupLink *nextSpare ) +{ + struct PaUtilAllocationGroupLink *result; + int i; + + result = (struct PaUtilAllocationGroupLink *)PaUtil_AllocateMemory( + sizeof(struct PaUtilAllocationGroupLink) * count ); + if( result ) + { + /* the block link */ + result[0].buffer = result; + result[0].next = nextBlock; + + /* the spare links */ + for( i=1; i<count; ++i ) + { + result[i].buffer = 0; + result[i].next = &result[i+1]; + } + result[count-1].next = nextSpare; + } + + return result; +} + + +PaUtilAllocationGroup* PaUtil_CreateAllocationGroup( void ) +{ + PaUtilAllocationGroup* result = 0; + struct PaUtilAllocationGroupLink *links; + + + links = AllocateLinks( PA_INITIAL_LINK_COUNT_, 0, 0 ); + if( links != 0 ) + { + result = (PaUtilAllocationGroup*)PaUtil_AllocateMemory( sizeof(PaUtilAllocationGroup) ); + if( result ) + { + result->linkCount = PA_INITIAL_LINK_COUNT_; + result->linkBlocks = &links[0]; + result->spareLinks = &links[1]; + result->allocations = 0; + } + else + { + PaUtil_FreeMemory( links ); + } + } + + return result; +} + + +void PaUtil_DestroyAllocationGroup( PaUtilAllocationGroup* group ) +{ + struct PaUtilAllocationGroupLink *current = group->linkBlocks; + struct PaUtilAllocationGroupLink *next; + + while( current ) + { + next = current->next; + PaUtil_FreeMemory( current->buffer ); + current = next; + } + + PaUtil_FreeMemory( group ); +} + + +void* PaUtil_GroupAllocateMemory( PaUtilAllocationGroup* group, long size ) +{ + struct PaUtilAllocationGroupLink *links, *link; + void *result = 0; + + /* allocate more links if necessary */ + if( !group->spareLinks ) + { + /* double the link count on each block allocation */ + links = AllocateLinks( group->linkCount, group->linkBlocks, group->spareLinks ); + if( links ) + { + group->linkCount += group->linkCount; + group->linkBlocks = &links[0]; + group->spareLinks = &links[1]; + } + } + + if( group->spareLinks ) + { + result = PaUtil_AllocateMemory( size ); + if( result ) + { + link = group->spareLinks; + group->spareLinks = link->next; + + link->buffer = result; + link->next = group->allocations; + + group->allocations = link; + } + } + + return result; +} + + +void PaUtil_GroupFreeMemory( PaUtilAllocationGroup* group, void *buffer ) +{ + struct PaUtilAllocationGroupLink *current = group->allocations; + struct PaUtilAllocationGroupLink *previous = 0; + + if( buffer == 0 ) + return; + + /* find the right link and remove it */ + while( current ) + { + if( current->buffer == buffer ) + { + if( previous ) + { + previous->next = current->next; + } + else + { + group->allocations = current->next; + } + + current->buffer = 0; + current->next = group->spareLinks; + group->spareLinks = current; + + break; + } + + previous = current; + current = current->next; + } + + PaUtil_FreeMemory( buffer ); /* free the memory whether we found it in the list or not */ +} + + +void PaUtil_FreeAllAllocations( PaUtilAllocationGroup* group ) +{ + struct PaUtilAllocationGroupLink *current = group->allocations; + struct PaUtilAllocationGroupLink *previous = 0; + + /* free all buffers in the allocations list */ + while( current ) + { + PaUtil_FreeMemory( current->buffer ); + current->buffer = 0; + + previous = current; + current = current->next; + } + + /* link the former allocations list onto the front of the spareLinks list */ + if( previous ) + { + previous->next = group->spareLinks; + group->spareLinks = group->allocations; + group->allocations = 0; + } +} diff --git a/portaudio/src/common/pa_allocation.h b/portaudio/src/common/pa_allocation.h new file mode 100644 index 0000000..5c3cf53 --- /dev/null +++ b/portaudio/src/common/pa_allocation.h @@ -0,0 +1,104 @@ +#ifndef PA_ALLOCATION_H +#define PA_ALLOCATION_H +/* + * $Id$ + * Portable Audio I/O Library allocation context header + * memory allocation context for tracking allocation groups + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2008 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Allocation Group prototypes. An Allocation Group makes it easy to + allocate multiple blocks of memory and free them all at once. + + An allocation group is useful for keeping track of multiple blocks + of memory which are allocated at the same time (such as during initialization) + and need to be deallocated at the same time. The allocation group maintains + a list of allocated blocks, and can free all allocations at once. This + can be useful for cleaning up after a partially initialized object fails. + + The allocation group implementation is built on top of the lower + level allocation functions defined in pa_util.h +*/ + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +typedef struct +{ + long linkCount; + struct PaUtilAllocationGroupLink *linkBlocks; + struct PaUtilAllocationGroupLink *spareLinks; + struct PaUtilAllocationGroupLink *allocations; +}PaUtilAllocationGroup; + + + +/** Create an allocation group. +*/ +PaUtilAllocationGroup* PaUtil_CreateAllocationGroup( void ); + +/** Destroy an allocation group, but not the memory allocated through the group. +*/ +void PaUtil_DestroyAllocationGroup( PaUtilAllocationGroup* group ); + +/** Allocate a block of memory though an allocation group. +*/ +void* PaUtil_GroupAllocateMemory( PaUtilAllocationGroup* group, long size ); + +/** Free a block of memory that was previously allocated though an allocation + group. Calling this function is a relatively time consuming operation. + Under normal circumstances clients should call PaUtil_FreeAllAllocations to + free all allocated blocks simultaneously. + @see PaUtil_FreeAllAllocations +*/ +void PaUtil_GroupFreeMemory( PaUtilAllocationGroup* group, void *buffer ); + +/** Free all blocks of memory which have been allocated through the allocation + group. This function doesn't destroy the group itself. +*/ +void PaUtil_FreeAllAllocations( PaUtilAllocationGroup* group ); + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_ALLOCATION_H */ diff --git a/portaudio/src/common/pa_converters.c b/portaudio/src/common/pa_converters.c new file mode 100644 index 0000000..93e44a3 --- /dev/null +++ b/portaudio/src/common/pa_converters.c @@ -0,0 +1,1983 @@ +/* + * $Id$ + * Portable Audio I/O Library sample conversion mechanism + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Conversion function implementations. + + If the C9x function lrintf() is available, define PA_USE_C99_LRINTF to use it + + @todo Consider whether functions which dither but don't clip should exist, + V18 automatically enabled clipping whenever dithering was selected. Perhaps + we should do the same. + see: "require clipping for dithering sample conversion functions?" + http://www.portaudio.com/trac/ticket/112 + + @todo implement the converters marked IMPLEMENT ME: Int32_To_Int24_Dither, + Int32_To_UInt8_Dither, Int24_To_Int16_Dither, Int24_To_Int8_Dither, + Int24_To_UInt8_Dither, Int16_To_Int8_Dither, Int16_To_UInt8_Dither + see: "some conversion functions are not implemented in pa_converters.c" + http://www.portaudio.com/trac/ticket/35 + + @todo review the converters marked REVIEW: Float32_To_Int32, + Float32_To_Int32_Dither, Float32_To_Int32_Clip, Float32_To_Int32_DitherClip, + Int32_To_Int16_Dither, Int32_To_Int8_Dither, Int16_To_Int32 +*/ + + +#include "pa_converters.h" +#include "pa_dither.h" +#include "pa_endianness.h" +#include "pa_types.h" + + +PaSampleFormat PaUtil_SelectClosestAvailableFormat( + PaSampleFormat availableFormats, PaSampleFormat format ) +{ + PaSampleFormat result; + + format &= ~paNonInterleaved; + availableFormats &= ~paNonInterleaved; + + if( (format & availableFormats) == 0 ) + { + /* NOTE: this code depends on the sample format constants being in + descending order of quality - ie best quality is 0 + FIXME: should write an assert which checks that all of the + known constants conform to that requirement. + */ + + if( format != 0x01 ) + { + /* scan for better formats */ + result = format; + do + { + result >>= 1; + } + while( (result & availableFormats) == 0 && result != 0 ); + } + else + { + result = 0; + } + + if( result == 0 ){ + /* scan for worse formats */ + result = format; + do + { + result <<= 1; + } + while( (result & availableFormats) == 0 && result != paCustomFormat ); + + if( (result & availableFormats) == 0 ) + result = paSampleFormatNotSupported; + } + + }else{ + result = format; + } + + return result; +} + +/* -------------------------------------------------------------------------- */ + +#define PA_SELECT_FORMAT_( format, float32, int32, int24, int16, int8, uint8 ) \ + switch( format & ~paNonInterleaved ){ \ + case paFloat32: \ + float32 \ + case paInt32: \ + int32 \ + case paInt24: \ + int24 \ + case paInt16: \ + int16 \ + case paInt8: \ + int8 \ + case paUInt8: \ + uint8 \ + default: return 0; \ + } + +/* -------------------------------------------------------------------------- */ + +#define PA_SELECT_CONVERTER_DITHER_CLIP_( flags, source, destination ) \ + if( flags & paClipOff ){ /* no clip */ \ + if( flags & paDitherOff ){ /* no dither */ \ + return paConverters. source ## _To_ ## destination; \ + }else{ /* dither */ \ + return paConverters. source ## _To_ ## destination ## _Dither; \ + } \ + }else{ /* clip */ \ + if( flags & paDitherOff ){ /* no dither */ \ + return paConverters. source ## _To_ ## destination ## _Clip; \ + }else{ /* dither */ \ + return paConverters. source ## _To_ ## destination ## _DitherClip; \ + } \ + } + +/* -------------------------------------------------------------------------- */ + +#define PA_SELECT_CONVERTER_DITHER_( flags, source, destination ) \ + if( flags & paDitherOff ){ /* no dither */ \ + return paConverters. source ## _To_ ## destination; \ + }else{ /* dither */ \ + return paConverters. source ## _To_ ## destination ## _Dither; \ + } + +/* -------------------------------------------------------------------------- */ + +#define PA_USE_CONVERTER_( source, destination )\ + return paConverters. source ## _To_ ## destination; + +/* -------------------------------------------------------------------------- */ + +#define PA_UNITY_CONVERSION_( wordlength )\ + return paConverters. Copy_ ## wordlength ## _To_ ## wordlength; + +/* -------------------------------------------------------------------------- */ + +PaUtilConverter* PaUtil_SelectConverter( PaSampleFormat sourceFormat, + PaSampleFormat destinationFormat, PaStreamFlags flags ) +{ + PA_SELECT_FORMAT_( sourceFormat, + /* paFloat32: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_UNITY_CONVERSION_( 32 ), + /* paInt32: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int32 ), + /* paInt24: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int24 ), + /* paInt16: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int16 ), + /* paInt8: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, Int8 ), + /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_CLIP_( flags, Float32, UInt8 ) + ), + /* paInt32: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_USE_CONVERTER_( Int32, Float32 ), + /* paInt32: */ PA_UNITY_CONVERSION_( 32 ), + /* paInt24: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int24 ), + /* paInt16: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int16 ), + /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, Int8 ), + /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int32, UInt8 ) + ), + /* paInt24: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_USE_CONVERTER_( Int24, Float32 ), + /* paInt32: */ PA_USE_CONVERTER_( Int24, Int32 ), + /* paInt24: */ PA_UNITY_CONVERSION_( 24 ), + /* paInt16: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, Int16 ), + /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, Int8 ), + /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int24, UInt8 ) + ), + /* paInt16: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_USE_CONVERTER_( Int16, Float32 ), + /* paInt32: */ PA_USE_CONVERTER_( Int16, Int32 ), + /* paInt24: */ PA_USE_CONVERTER_( Int16, Int24 ), + /* paInt16: */ PA_UNITY_CONVERSION_( 16 ), + /* paInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int16, Int8 ), + /* paUInt8: */ PA_SELECT_CONVERTER_DITHER_( flags, Int16, UInt8 ) + ), + /* paInt8: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_USE_CONVERTER_( Int8, Float32 ), + /* paInt32: */ PA_USE_CONVERTER_( Int8, Int32 ), + /* paInt24: */ PA_USE_CONVERTER_( Int8, Int24 ), + /* paInt16: */ PA_USE_CONVERTER_( Int8, Int16 ), + /* paInt8: */ PA_UNITY_CONVERSION_( 8 ), + /* paUInt8: */ PA_USE_CONVERTER_( Int8, UInt8 ) + ), + /* paUInt8: */ + PA_SELECT_FORMAT_( destinationFormat, + /* paFloat32: */ PA_USE_CONVERTER_( UInt8, Float32 ), + /* paInt32: */ PA_USE_CONVERTER_( UInt8, Int32 ), + /* paInt24: */ PA_USE_CONVERTER_( UInt8, Int24 ), + /* paInt16: */ PA_USE_CONVERTER_( UInt8, Int16 ), + /* paInt8: */ PA_USE_CONVERTER_( UInt8, Int8 ), + /* paUInt8: */ PA_UNITY_CONVERSION_( 8 ) + ) + ) +} + +/* -------------------------------------------------------------------------- */ + +#ifdef PA_NO_STANDARD_CONVERTERS + +/* -------------------------------------------------------------------------- */ + +PaUtilConverterTable paConverters = { + 0, /* PaUtilConverter *Float32_To_Int32; */ + 0, /* PaUtilConverter *Float32_To_Int32_Dither; */ + 0, /* PaUtilConverter *Float32_To_Int32_Clip; */ + 0, /* PaUtilConverter *Float32_To_Int32_DitherClip; */ + + 0, /* PaUtilConverter *Float32_To_Int24; */ + 0, /* PaUtilConverter *Float32_To_Int24_Dither; */ + 0, /* PaUtilConverter *Float32_To_Int24_Clip; */ + 0, /* PaUtilConverter *Float32_To_Int24_DitherClip; */ + + 0, /* PaUtilConverter *Float32_To_Int16; */ + 0, /* PaUtilConverter *Float32_To_Int16_Dither; */ + 0, /* PaUtilConverter *Float32_To_Int16_Clip; */ + 0, /* PaUtilConverter *Float32_To_Int16_DitherClip; */ + + 0, /* PaUtilConverter *Float32_To_Int8; */ + 0, /* PaUtilConverter *Float32_To_Int8_Dither; */ + 0, /* PaUtilConverter *Float32_To_Int8_Clip; */ + 0, /* PaUtilConverter *Float32_To_Int8_DitherClip; */ + + 0, /* PaUtilConverter *Float32_To_UInt8; */ + 0, /* PaUtilConverter *Float32_To_UInt8_Dither; */ + 0, /* PaUtilConverter *Float32_To_UInt8_Clip; */ + 0, /* PaUtilConverter *Float32_To_UInt8_DitherClip; */ + + 0, /* PaUtilConverter *Int32_To_Float32; */ + 0, /* PaUtilConverter *Int32_To_Int24; */ + 0, /* PaUtilConverter *Int32_To_Int24_Dither; */ + 0, /* PaUtilConverter *Int32_To_Int16; */ + 0, /* PaUtilConverter *Int32_To_Int16_Dither; */ + 0, /* PaUtilConverter *Int32_To_Int8; */ + 0, /* PaUtilConverter *Int32_To_Int8_Dither; */ + 0, /* PaUtilConverter *Int32_To_UInt8; */ + 0, /* PaUtilConverter *Int32_To_UInt8_Dither; */ + + 0, /* PaUtilConverter *Int24_To_Float32; */ + 0, /* PaUtilConverter *Int24_To_Int32; */ + 0, /* PaUtilConverter *Int24_To_Int16; */ + 0, /* PaUtilConverter *Int24_To_Int16_Dither; */ + 0, /* PaUtilConverter *Int24_To_Int8; */ + 0, /* PaUtilConverter *Int24_To_Int8_Dither; */ + 0, /* PaUtilConverter *Int24_To_UInt8; */ + 0, /* PaUtilConverter *Int24_To_UInt8_Dither; */ + + 0, /* PaUtilConverter *Int16_To_Float32; */ + 0, /* PaUtilConverter *Int16_To_Int32; */ + 0, /* PaUtilConverter *Int16_To_Int24; */ + 0, /* PaUtilConverter *Int16_To_Int8; */ + 0, /* PaUtilConverter *Int16_To_Int8_Dither; */ + 0, /* PaUtilConverter *Int16_To_UInt8; */ + 0, /* PaUtilConverter *Int16_To_UInt8_Dither; */ + + 0, /* PaUtilConverter *Int8_To_Float32; */ + 0, /* PaUtilConverter *Int8_To_Int32; */ + 0, /* PaUtilConverter *Int8_To_Int24 */ + 0, /* PaUtilConverter *Int8_To_Int16; */ + 0, /* PaUtilConverter *Int8_To_UInt8; */ + + 0, /* PaUtilConverter *UInt8_To_Float32; */ + 0, /* PaUtilConverter *UInt8_To_Int32; */ + 0, /* PaUtilConverter *UInt8_To_Int24; */ + 0, /* PaUtilConverter *UInt8_To_Int16; */ + 0, /* PaUtilConverter *UInt8_To_Int8; */ + + 0, /* PaUtilConverter *Copy_8_To_8; */ + 0, /* PaUtilConverter *Copy_16_To_16; */ + 0, /* PaUtilConverter *Copy_24_To_24; */ + 0 /* PaUtilConverter *Copy_32_To_32; */ +}; + +/* -------------------------------------------------------------------------- */ + +#else /* PA_NO_STANDARD_CONVERTERS is not defined */ + +/* -------------------------------------------------------------------------- */ + +#define PA_CLIP_( val, min, max )\ + { val = ((val) < (min)) ? (min) : (((val) > (max)) ? (max) : (val)); } + + +static const float const_1_div_128_ = 1.0f / 128.0f; /* 8 bit multiplier */ + +static const float const_1_div_32768_ = 1.0f / 32768.f; /* 16 bit multiplier */ + +static const double const_1_div_2147483648_ = 1.0 / 2147483648.0; /* 32 bit multiplier */ + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* REVIEW */ +#ifdef PA_USE_C99_LRINTF + float scaled = *src * 0x7FFFFFFF; + *dest = lrintf(scaled-0.5f); +#else + double scaled = *src * 0x7FFFFFFF; + *dest = (PaInt32) scaled; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int32_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + + while( count-- ) + { + /* REVIEW */ +#ifdef PA_USE_C99_LRINTF + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = ((float)*src * (2147483646.0f)) + dither; + *dest = lrintf(dithered - 0.5f); +#else + double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + double dithered = ((double)*src * (2147483646.0)) + dither; + *dest = (PaInt32) dithered; +#endif + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int32_Clip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* REVIEW */ +#ifdef PA_USE_C99_LRINTF + float scaled = *src * 0x7FFFFFFF; + PA_CLIP_( scaled, -2147483648.f, 2147483647.f ); + *dest = lrintf(scaled-0.5f); +#else + double scaled = *src * 0x7FFFFFFF; + PA_CLIP_( scaled, -2147483648., 2147483647. ); + *dest = (PaInt32) scaled; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int32_DitherClip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + + while( count-- ) + { + /* REVIEW */ +#ifdef PA_USE_C99_LRINTF + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = ((float)*src * (2147483646.0f)) + dither; + PA_CLIP_( dithered, -2147483648.f, 2147483647.f ); + *dest = lrintf(dithered-0.5f); +#else + double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + double dithered = ((double)*src * (2147483646.0)) + dither; + PA_CLIP_( dithered, -2147483648., 2147483647. ); + *dest = (PaInt32) dithered; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + PaInt32 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* convert to 32 bit and drop the low 8 bits */ + double scaled = (double)(*src) * 2147483647.0; + temp = (PaInt32) scaled; + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = (unsigned char)(temp >> 8); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 24); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(temp >> 24); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 8); +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int24_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + PaInt32 temp; + + while( count-- ) + { + /* convert to 32 bit and drop the low 8 bits */ + + double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + double dithered = ((double)*src * (2147483646.0)) + dither; + + temp = (PaInt32) dithered; + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = (unsigned char)(temp >> 8); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 24); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(temp >> 24); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 8); +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int24_Clip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + PaInt32 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* convert to 32 bit and drop the low 8 bits */ + double scaled = *src * 0x7FFFFFFF; + PA_CLIP_( scaled, -2147483648., 2147483647. ); + temp = (PaInt32) scaled; + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = (unsigned char)(temp >> 8); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 24); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(temp >> 24); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 8); +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int24_DitherClip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + PaInt32 temp; + + while( count-- ) + { + /* convert to 32 bit and drop the low 8 bits */ + + double dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + double dithered = ((double)*src * (2147483646.0)) + dither; + PA_CLIP_( dithered, -2147483648., 2147483647. ); + + temp = (PaInt32) dithered; + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = (unsigned char)(temp >> 8); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 24); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(temp >> 24); + dest[1] = (unsigned char)(temp >> 16); + dest[2] = (unsigned char)(temp >> 8); +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { +#ifdef PA_USE_C99_LRINTF + float tempf = (*src * (32767.0f)) ; + *dest = lrintf(tempf-0.5f); +#else + short samp = (short) (*src * (32767.0f)); + *dest = samp; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int16_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + + while( count-- ) + { + + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (32766.0f)) + dither; + +#ifdef PA_USE_C99_LRINTF + *dest = lrintf(dithered-0.5f); +#else + *dest = (PaInt16) dithered; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int16_Clip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { +#ifdef PA_USE_C99_LRINTF + long samp = lrintf((*src * (32767.0f)) -0.5f); +#else + long samp = (PaInt32) (*src * (32767.0f)); +#endif + PA_CLIP_( samp, -0x8000, 0x7FFF ); + *dest = (PaInt16) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int16_DitherClip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (32766.0f)) + dither; + PaInt32 samp = (PaInt32) dithered; + PA_CLIP_( samp, -0x8000, 0x7FFF ); +#ifdef PA_USE_C99_LRINTF + *dest = lrintf(samp-0.5f); +#else + *dest = (PaInt16) samp; +#endif + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + signed char samp = (signed char) (*src * (127.0f)); + *dest = samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + + while( count-- ) + { + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (126.0f)) + dither; + PaInt32 samp = (PaInt32) dithered; + *dest = (signed char) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int8_Clip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + PaInt32 samp = (PaInt32)(*src * (127.0f)); + PA_CLIP_( samp, -0x80, 0x7F ); + *dest = (signed char) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_Int8_DitherClip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (126.0f)) + dither; + PaInt32 samp = (PaInt32) dithered; + PA_CLIP_( samp, -0x80, 0x7F ); + *dest = (signed char) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_UInt8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + unsigned char samp = (unsigned char)(128 + ((unsigned char) (*src * (127.0f)))); + *dest = samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_UInt8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + + while( count-- ) + { + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (126.0f)) + dither; + PaInt32 samp = (PaInt32) dithered; + *dest = (unsigned char) (128 + samp); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_UInt8_Clip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + PaInt32 samp = 128 + (PaInt32)(*src * (127.0f)); + PA_CLIP_( samp, 0x0000, 0x00FF ); + *dest = (unsigned char) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Float32_To_UInt8_DitherClip( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + float *src = (float*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + float dither = PaUtil_GenerateFloatTriangularDither( ditherGenerator ); + /* use smaller scaler to prevent overflow when we add the dither */ + float dithered = (*src * (126.0f)) + dither; + PaInt32 samp = 128 + (PaInt32) dithered; + PA_CLIP_( samp, 0x0000, 0x00FF ); + *dest = (unsigned char) samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Float32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + float *dest = (float*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = (float) ((double)*src * const_1_div_2147483648_); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* REVIEW */ +#if defined(PA_LITTLE_ENDIAN) + dest[0] = (unsigned char)(*src >> 8); + dest[1] = (unsigned char)(*src >> 16); + dest[2] = (unsigned char)(*src >> 24); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(*src >> 24); + dest[1] = (unsigned char)(*src >> 16); + dest[2] = (unsigned char)(*src >> 8); +#endif + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int24_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + (void) destinationBuffer; /* unused parameters */ + (void) destinationStride; /* unused parameters */ + (void) sourceBuffer; /* unused parameters */ + (void) sourceStride; /* unused parameters */ + (void) count; /* unused parameters */ + (void) ditherGenerator; /* unused parameters */ + /* IMPLEMENT ME */ +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = (PaInt16) ((*src) >> 16); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int16_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + PaInt32 dither; + + while( count-- ) + { + /* REVIEW */ + dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); + *dest = (PaInt16) ((((*src)>>1) + dither) >> 15); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = (signed char) ((*src) >> 24); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_Int8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + PaInt32 dither; + + while( count-- ) + { + /* REVIEW */ + dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); + *dest = (signed char) ((((*src)>>1) + dither) >> 23); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_UInt8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (unsigned char)(((*src) >> 24) + 128); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int32_To_UInt8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt32 *src = (PaInt32*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* IMPLEMENT ME */ + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Float32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + float *dest = (float*)destinationBuffer; + PaInt32 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + temp = (((PaInt32)src[0]) << 8); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 24); +#elif defined(PA_BIG_ENDIAN) + temp = (((PaInt32)src[0]) << 24); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 8); +#endif + + *dest = (float) ((double)temp * const_1_div_2147483648_); + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Int32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + PaInt32 *dest = (PaInt32*) destinationBuffer; + PaInt32 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + temp = (((PaInt32)src[0]) << 8); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 24); +#elif defined(PA_BIG_ENDIAN) + temp = (((PaInt32)src[0]) << 24); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 8); +#endif + + *dest = temp; + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Int16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + + PaInt16 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + /* src[0] is discarded */ + temp = (((PaInt16)src[1])); + temp = temp | (PaInt16)(((PaInt16)src[2]) << 8); +#elif defined(PA_BIG_ENDIAN) + /* src[2] is discarded */ + temp = (PaInt16)(((PaInt16)src[0]) << 8); + temp = temp | (((PaInt16)src[1])); +#endif + + *dest = temp; + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Int16_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + + PaInt32 temp, dither; + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + temp = (((PaInt32)src[0]) << 8); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 24); +#elif defined(PA_BIG_ENDIAN) + temp = (((PaInt32)src[0]) << 24); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 8); +#endif + + /* REVIEW */ + dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); + *dest = (PaInt16) (((temp >> 1) + dither) >> 15); + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Int8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + /* src[0] is discarded */ + /* src[1] is discarded */ + *dest = src[2]; +#elif defined(PA_BIG_ENDIAN) + /* src[2] is discarded */ + /* src[1] is discarded */ + *dest = src[0]; +#endif + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_Int8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + + PaInt32 temp, dither; + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + temp = (((PaInt32)src[0]) << 8); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 24); +#elif defined(PA_BIG_ENDIAN) + temp = (((PaInt32)src[0]) << 24); + temp = temp | (((PaInt32)src[1]) << 16); + temp = temp | (((PaInt32)src[2]) << 8); +#endif + + /* REVIEW */ + dither = PaUtil_Generate16BitTriangularDither( ditherGenerator ); + *dest = (signed char) (((temp >> 1) + dither) >> 23); + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_UInt8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + /* src[0] is discarded */ + /* src[1] is discarded */ + *dest = (unsigned char)(src[2] + 128); +#elif defined(PA_BIG_ENDIAN) + *dest = (unsigned char)(src[0] + 128); + /* src[1] is discarded */ + /* src[2] is discarded */ +#endif + + src += sourceStride * 3; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int24_To_UInt8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + (void) destinationBuffer; /* unused parameters */ + (void) destinationStride; /* unused parameters */ + (void) sourceBuffer; /* unused parameters */ + (void) sourceStride; /* unused parameters */ + (void) count; /* unused parameters */ + (void) ditherGenerator; /* unused parameters */ + /* IMPLEMENT ME */ +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_Float32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + float *dest = (float*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + float samp = *src * const_1_div_32768_; /* FIXME: i'm concerned about this being asymmetrical with float->int16 -rb */ + *dest = samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_Int32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* REVIEW: we should consider something like + (*src << 16) | (*src & 0xFFFF) + */ + + *dest = *src << 16; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_Int24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*) sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + PaInt16 temp; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + temp = *src; + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = 0; + dest[1] = (unsigned char)(temp); + dest[2] = (unsigned char)(temp >> 8); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(temp >> 8); + dest[1] = (unsigned char)(temp); + dest[2] = 0; +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_Int8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (signed char)((*src) >> 8); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_Int8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* IMPLEMENT ME */ + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_UInt8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (unsigned char)(((*src) >> 8) + 128); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int16_To_UInt8_Dither( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaInt16 *src = (PaInt16*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + /* IMPLEMENT ME */ + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int8_To_Float32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + signed char *src = (signed char*)sourceBuffer; + float *dest = (float*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + float samp = *src * const_1_div_128_; + *dest = samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int8_To_Int32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + signed char *src = (signed char*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (*src) << 24; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int8_To_Int24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + signed char *src = (signed char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = 0; + dest[1] = 0; + dest[2] = (*src); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (*src); + dest[1] = 0; + dest[2] = 0; +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int8_To_Int16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + signed char *src = (signed char*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (PaInt16)((*src) << 8); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Int8_To_UInt8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + signed char *src = (signed char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (unsigned char)(*src + 128); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void UInt8_To_Float32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + float *dest = (float*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + float samp = (*src - 128) * const_1_div_128_; + *dest = samp; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void UInt8_To_Int32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + PaInt32 *dest = (PaInt32*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (*src - 128) << 24; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void UInt8_To_Int24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + (void) ditherGenerator; /* unused parameters */ + + while( count-- ) + { + +#if defined(PA_LITTLE_ENDIAN) + dest[0] = 0; + dest[1] = 0; + dest[2] = (unsigned char)(*src - 128); +#elif defined(PA_BIG_ENDIAN) + dest[0] = (unsigned char)(*src - 128); + dest[1] = 0; + dest[2] = 0; +#endif + + src += sourceStride; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void UInt8_To_Int16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + PaInt16 *dest = (PaInt16*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (PaInt16)((*src - 128) << 8); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void UInt8_To_Int8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + signed char *dest = (signed char*)destinationBuffer; + (void)ditherGenerator; /* unused parameter */ + + while( count-- ) + { + (*dest) = (signed char)(*src - 128); + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Copy_8_To_8( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = *src; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Copy_16_To_16( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaUint16 *src = (PaUint16 *)sourceBuffer; + PaUint16 *dest = (PaUint16 *)destinationBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = *src; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Copy_24_To_24( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + unsigned char *src = (unsigned char*)sourceBuffer; + unsigned char *dest = (unsigned char*)destinationBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[2]; + + src += sourceStride * 3; + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Copy_32_To_32( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ) +{ + PaUint32 *dest = (PaUint32 *)destinationBuffer; + PaUint32 *src = (PaUint32 *)sourceBuffer; + + (void) ditherGenerator; /* unused parameter */ + + while( count-- ) + { + *dest = *src; + + src += sourceStride; + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +PaUtilConverterTable paConverters = { + Float32_To_Int32, /* PaUtilConverter *Float32_To_Int32; */ + Float32_To_Int32_Dither, /* PaUtilConverter *Float32_To_Int32_Dither; */ + Float32_To_Int32_Clip, /* PaUtilConverter *Float32_To_Int32_Clip; */ + Float32_To_Int32_DitherClip, /* PaUtilConverter *Float32_To_Int32_DitherClip; */ + + Float32_To_Int24, /* PaUtilConverter *Float32_To_Int24; */ + Float32_To_Int24_Dither, /* PaUtilConverter *Float32_To_Int24_Dither; */ + Float32_To_Int24_Clip, /* PaUtilConverter *Float32_To_Int24_Clip; */ + Float32_To_Int24_DitherClip, /* PaUtilConverter *Float32_To_Int24_DitherClip; */ + + Float32_To_Int16, /* PaUtilConverter *Float32_To_Int16; */ + Float32_To_Int16_Dither, /* PaUtilConverter *Float32_To_Int16_Dither; */ + Float32_To_Int16_Clip, /* PaUtilConverter *Float32_To_Int16_Clip; */ + Float32_To_Int16_DitherClip, /* PaUtilConverter *Float32_To_Int16_DitherClip; */ + + Float32_To_Int8, /* PaUtilConverter *Float32_To_Int8; */ + Float32_To_Int8_Dither, /* PaUtilConverter *Float32_To_Int8_Dither; */ + Float32_To_Int8_Clip, /* PaUtilConverter *Float32_To_Int8_Clip; */ + Float32_To_Int8_DitherClip, /* PaUtilConverter *Float32_To_Int8_DitherClip; */ + + Float32_To_UInt8, /* PaUtilConverter *Float32_To_UInt8; */ + Float32_To_UInt8_Dither, /* PaUtilConverter *Float32_To_UInt8_Dither; */ + Float32_To_UInt8_Clip, /* PaUtilConverter *Float32_To_UInt8_Clip; */ + Float32_To_UInt8_DitherClip, /* PaUtilConverter *Float32_To_UInt8_DitherClip; */ + + Int32_To_Float32, /* PaUtilConverter *Int32_To_Float32; */ + Int32_To_Int24, /* PaUtilConverter *Int32_To_Int24; */ + Int32_To_Int24_Dither, /* PaUtilConverter *Int32_To_Int24_Dither; */ + Int32_To_Int16, /* PaUtilConverter *Int32_To_Int16; */ + Int32_To_Int16_Dither, /* PaUtilConverter *Int32_To_Int16_Dither; */ + Int32_To_Int8, /* PaUtilConverter *Int32_To_Int8; */ + Int32_To_Int8_Dither, /* PaUtilConverter *Int32_To_Int8_Dither; */ + Int32_To_UInt8, /* PaUtilConverter *Int32_To_UInt8; */ + Int32_To_UInt8_Dither, /* PaUtilConverter *Int32_To_UInt8_Dither; */ + + Int24_To_Float32, /* PaUtilConverter *Int24_To_Float32; */ + Int24_To_Int32, /* PaUtilConverter *Int24_To_Int32; */ + Int24_To_Int16, /* PaUtilConverter *Int24_To_Int16; */ + Int24_To_Int16_Dither, /* PaUtilConverter *Int24_To_Int16_Dither; */ + Int24_To_Int8, /* PaUtilConverter *Int24_To_Int8; */ + Int24_To_Int8_Dither, /* PaUtilConverter *Int24_To_Int8_Dither; */ + Int24_To_UInt8, /* PaUtilConverter *Int24_To_UInt8; */ + Int24_To_UInt8_Dither, /* PaUtilConverter *Int24_To_UInt8_Dither; */ + + Int16_To_Float32, /* PaUtilConverter *Int16_To_Float32; */ + Int16_To_Int32, /* PaUtilConverter *Int16_To_Int32; */ + Int16_To_Int24, /* PaUtilConverter *Int16_To_Int24; */ + Int16_To_Int8, /* PaUtilConverter *Int16_To_Int8; */ + Int16_To_Int8_Dither, /* PaUtilConverter *Int16_To_Int8_Dither; */ + Int16_To_UInt8, /* PaUtilConverter *Int16_To_UInt8; */ + Int16_To_UInt8_Dither, /* PaUtilConverter *Int16_To_UInt8_Dither; */ + + Int8_To_Float32, /* PaUtilConverter *Int8_To_Float32; */ + Int8_To_Int32, /* PaUtilConverter *Int8_To_Int32; */ + Int8_To_Int24, /* PaUtilConverter *Int8_To_Int24 */ + Int8_To_Int16, /* PaUtilConverter *Int8_To_Int16; */ + Int8_To_UInt8, /* PaUtilConverter *Int8_To_UInt8; */ + + UInt8_To_Float32, /* PaUtilConverter *UInt8_To_Float32; */ + UInt8_To_Int32, /* PaUtilConverter *UInt8_To_Int32; */ + UInt8_To_Int24, /* PaUtilConverter *UInt8_To_Int24; */ + UInt8_To_Int16, /* PaUtilConverter *UInt8_To_Int16; */ + UInt8_To_Int8, /* PaUtilConverter *UInt8_To_Int8; */ + + Copy_8_To_8, /* PaUtilConverter *Copy_8_To_8; */ + Copy_16_To_16, /* PaUtilConverter *Copy_16_To_16; */ + Copy_24_To_24, /* PaUtilConverter *Copy_24_To_24; */ + Copy_32_To_32 /* PaUtilConverter *Copy_32_To_32; */ +}; + +/* -------------------------------------------------------------------------- */ + +#endif /* PA_NO_STANDARD_CONVERTERS */ + +/* -------------------------------------------------------------------------- */ + +PaUtilZeroer* PaUtil_SelectZeroer( PaSampleFormat destinationFormat ) +{ + switch( destinationFormat & ~paNonInterleaved ){ + case paFloat32: + return paZeroers.Zero32; + case paInt32: + return paZeroers.Zero32; + case paInt24: + return paZeroers.Zero24; + case paInt16: + return paZeroers.Zero16; + case paInt8: + return paZeroers.Zero8; + case paUInt8: + return paZeroers.ZeroU8; + default: return 0; + } +} + +/* -------------------------------------------------------------------------- */ + +#ifdef PA_NO_STANDARD_ZEROERS + +/* -------------------------------------------------------------------------- */ + +PaUtilZeroerTable paZeroers = { + 0, /* PaUtilZeroer *ZeroU8; */ + 0, /* PaUtilZeroer *Zero8; */ + 0, /* PaUtilZeroer *Zero16; */ + 0, /* PaUtilZeroer *Zero24; */ + 0, /* PaUtilZeroer *Zero32; */ +}; + +/* -------------------------------------------------------------------------- */ + +#else /* PA_NO_STANDARD_ZEROERS is not defined */ + +/* -------------------------------------------------------------------------- */ + +static void ZeroU8( void *destinationBuffer, signed int destinationStride, + unsigned int count ) +{ + unsigned char *dest = (unsigned char*)destinationBuffer; + + while( count-- ) + { + *dest = 128; + + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Zero8( void *destinationBuffer, signed int destinationStride, + unsigned int count ) +{ + unsigned char *dest = (unsigned char*)destinationBuffer; + + while( count-- ) + { + *dest = 0; + + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Zero16( void *destinationBuffer, signed int destinationStride, + unsigned int count ) +{ + PaUint16 *dest = (PaUint16 *)destinationBuffer; + + while( count-- ) + { + *dest = 0; + + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Zero24( void *destinationBuffer, signed int destinationStride, + unsigned int count ) +{ + unsigned char *dest = (unsigned char*)destinationBuffer; + + while( count-- ) + { + dest[0] = 0; + dest[1] = 0; + dest[2] = 0; + + dest += destinationStride * 3; + } +} + +/* -------------------------------------------------------------------------- */ + +static void Zero32( void *destinationBuffer, signed int destinationStride, + unsigned int count ) +{ + PaUint32 *dest = (PaUint32 *)destinationBuffer; + + while( count-- ) + { + *dest = 0; + + dest += destinationStride; + } +} + +/* -------------------------------------------------------------------------- */ + +PaUtilZeroerTable paZeroers = { + ZeroU8, /* PaUtilZeroer *ZeroU8; */ + Zero8, /* PaUtilZeroer *Zero8; */ + Zero16, /* PaUtilZeroer *Zero16; */ + Zero24, /* PaUtilZeroer *Zero24; */ + Zero32, /* PaUtilZeroer *Zero32; */ +}; + +/* -------------------------------------------------------------------------- */ + +#endif /* PA_NO_STANDARD_ZEROERS */ diff --git a/portaudio/src/common/pa_converters.h b/portaudio/src/common/pa_converters.h new file mode 100644 index 0000000..96edf1c --- /dev/null +++ b/portaudio/src/common/pa_converters.h @@ -0,0 +1,263 @@ +#ifndef PA_CONVERTERS_H +#define PA_CONVERTERS_H +/* + * $Id$ + * Portable Audio I/O Library sample conversion mechanism + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Conversion functions used to convert buffers of samples from one + format to another. +*/ + + +#include "portaudio.h" /* for PaSampleFormat */ + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +struct PaUtilTriangularDitherGenerator; + + +/** Choose an available sample format which is most appropriate for + representing the requested format. If the requested format is not available + higher quality formats are considered before lower quality formats. + @param availableFormats A variable containing the logical OR of all available + formats. + @param format The desired format. + @return The most appropriate available format for representing the requested + format. +*/ +PaSampleFormat PaUtil_SelectClosestAvailableFormat( + PaSampleFormat availableFormats, PaSampleFormat format ); + + +/* high level conversions functions for use by implementations */ + + +/** The generic sample converter prototype. Sample converters convert count + samples from sourceBuffer to destinationBuffer. The actual type of the data + pointed to by these parameters varys for different converter functions. + @param destinationBuffer A pointer to the first sample of the destination. + @param destinationStride An offset between successive destination samples + expressed in samples (not bytes.) It may be negative. + @param sourceBuffer A pointer to the first sample of the source. + @param sourceStride An offset between successive source samples + expressed in samples (not bytes.) It may be negative. + @param count The number of samples to convert. + @param ditherState State information used to calculate dither. Converters + that do not perform dithering will ignore this parameter, in which case + NULL or invalid dither state may be passed. +*/ +typedef void PaUtilConverter( + void *destinationBuffer, signed int destinationStride, + void *sourceBuffer, signed int sourceStride, + unsigned int count, struct PaUtilTriangularDitherGenerator *ditherGenerator ); + + +/** Find a sample converter function for the given source and destinations + formats and flags (clip and dither.) + @return + A pointer to a PaUtilConverter which will perform the requested + conversion, or NULL if the given format conversion is not supported. + For conversions where clipping or dithering is not necessary, the + clip and dither flags are ignored and a non-clipping or dithering + version is returned. + If the source and destination formats are the same, a function which + copies data of the appropriate size will be returned. +*/ +PaUtilConverter* PaUtil_SelectConverter( PaSampleFormat sourceFormat, + PaSampleFormat destinationFormat, PaStreamFlags flags ); + + +/** The generic buffer zeroer prototype. Buffer zeroers copy count zeros to + destinationBuffer. The actual type of the data pointed to varys for + different zeroer functions. + @param destinationBuffer A pointer to the first sample of the destination. + @param destinationStride An offset between successive destination samples + expressed in samples (not bytes.) It may be negative. + @param count The number of samples to zero. +*/ +typedef void PaUtilZeroer( + void *destinationBuffer, signed int destinationStride, unsigned int count ); + + +/** Find a buffer zeroer function for the given destination format. + @return + A pointer to a PaUtilZeroer which will perform the requested + zeroing. +*/ +PaUtilZeroer* PaUtil_SelectZeroer( PaSampleFormat destinationFormat ); + +/*----------------------------------------------------------------------------*/ +/* low level functions and data structures which may be used for + substituting conversion functions */ + + +/** The type used to store all sample conversion functions. + @see paConverters; +*/ +typedef struct{ + PaUtilConverter *Float32_To_Int32; + PaUtilConverter *Float32_To_Int32_Dither; + PaUtilConverter *Float32_To_Int32_Clip; + PaUtilConverter *Float32_To_Int32_DitherClip; + + PaUtilConverter *Float32_To_Int24; + PaUtilConverter *Float32_To_Int24_Dither; + PaUtilConverter *Float32_To_Int24_Clip; + PaUtilConverter *Float32_To_Int24_DitherClip; + + PaUtilConverter *Float32_To_Int16; + PaUtilConverter *Float32_To_Int16_Dither; + PaUtilConverter *Float32_To_Int16_Clip; + PaUtilConverter *Float32_To_Int16_DitherClip; + + PaUtilConverter *Float32_To_Int8; + PaUtilConverter *Float32_To_Int8_Dither; + PaUtilConverter *Float32_To_Int8_Clip; + PaUtilConverter *Float32_To_Int8_DitherClip; + + PaUtilConverter *Float32_To_UInt8; + PaUtilConverter *Float32_To_UInt8_Dither; + PaUtilConverter *Float32_To_UInt8_Clip; + PaUtilConverter *Float32_To_UInt8_DitherClip; + + PaUtilConverter *Int32_To_Float32; + PaUtilConverter *Int32_To_Int24; + PaUtilConverter *Int32_To_Int24_Dither; + PaUtilConverter *Int32_To_Int16; + PaUtilConverter *Int32_To_Int16_Dither; + PaUtilConverter *Int32_To_Int8; + PaUtilConverter *Int32_To_Int8_Dither; + PaUtilConverter *Int32_To_UInt8; + PaUtilConverter *Int32_To_UInt8_Dither; + + PaUtilConverter *Int24_To_Float32; + PaUtilConverter *Int24_To_Int32; + PaUtilConverter *Int24_To_Int16; + PaUtilConverter *Int24_To_Int16_Dither; + PaUtilConverter *Int24_To_Int8; + PaUtilConverter *Int24_To_Int8_Dither; + PaUtilConverter *Int24_To_UInt8; + PaUtilConverter *Int24_To_UInt8_Dither; + + PaUtilConverter *Int16_To_Float32; + PaUtilConverter *Int16_To_Int32; + PaUtilConverter *Int16_To_Int24; + PaUtilConverter *Int16_To_Int8; + PaUtilConverter *Int16_To_Int8_Dither; + PaUtilConverter *Int16_To_UInt8; + PaUtilConverter *Int16_To_UInt8_Dither; + + PaUtilConverter *Int8_To_Float32; + PaUtilConverter *Int8_To_Int32; + PaUtilConverter *Int8_To_Int24; + PaUtilConverter *Int8_To_Int16; + PaUtilConverter *Int8_To_UInt8; + + PaUtilConverter *UInt8_To_Float32; + PaUtilConverter *UInt8_To_Int32; + PaUtilConverter *UInt8_To_Int24; + PaUtilConverter *UInt8_To_Int16; + PaUtilConverter *UInt8_To_Int8; + + PaUtilConverter *Copy_8_To_8; /* copy without any conversion */ + PaUtilConverter *Copy_16_To_16; /* copy without any conversion */ + PaUtilConverter *Copy_24_To_24; /* copy without any conversion */ + PaUtilConverter *Copy_32_To_32; /* copy without any conversion */ +} PaUtilConverterTable; + + +/** A table of pointers to all required converter functions. + PaUtil_SelectConverter() uses this table to lookup the appropriate + conversion functions. The fields of this structure are initialized + with default conversion functions. Fields may be NULL, indicating that + no conversion function is available. User code may substitute optimised + conversion functions by assigning different function pointers to + these fields. + + @note + If the PA_NO_STANDARD_CONVERTERS preprocessor variable is defined, + PortAudio's standard converters will not be compiled, and all fields + of this structure will be initialized to NULL. In such cases, users + should supply their own conversion functions if the require PortAudio + to open a stream that requires sample conversion. + + @see PaUtilConverterTable, PaUtilConverter, PaUtil_SelectConverter +*/ +extern PaUtilConverterTable paConverters; + + +/** The type used to store all buffer zeroing functions. + @see paZeroers; +*/ +typedef struct{ + PaUtilZeroer *ZeroU8; /* unsigned 8 bit, zero == 128 */ + PaUtilZeroer *Zero8; + PaUtilZeroer *Zero16; + PaUtilZeroer *Zero24; + PaUtilZeroer *Zero32; +} PaUtilZeroerTable; + + +/** A table of pointers to all required zeroer functions. + PaUtil_SelectZeroer() uses this table to lookup the appropriate + conversion functions. The fields of this structure are initialized + with default conversion functions. User code may substitute optimised + conversion functions by assigning different function pointers to + these fields. + + @note + If the PA_NO_STANDARD_ZEROERS preprocessor variable is defined, + PortAudio's standard zeroers will not be compiled, and all fields + of this structure will be initialized to NULL. In such cases, users + should supply their own zeroing functions for the sample sizes which + they intend to use. + + @see PaUtilZeroerTable, PaUtilZeroer, PaUtil_SelectZeroer +*/ +extern PaUtilZeroerTable paZeroers; + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_CONVERTERS_H */ diff --git a/portaudio/src/common/pa_cpuload.c b/portaudio/src/common/pa_cpuload.c new file mode 100644 index 0000000..de57db2 --- /dev/null +++ b/portaudio/src/common/pa_cpuload.c @@ -0,0 +1,105 @@ +/* + * $Id$ + * Portable Audio I/O Library CPU Load measurement functions + * Portable CPU load measurement facility. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 2002 Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Functions to assist in measuring the CPU utilization of a callback + stream. Used to implement the Pa_GetStreamCpuLoad() function. + + @todo Dynamically calculate the coefficients used to smooth the CPU Load + Measurements over time to provide a uniform characterisation of CPU Load + independent of rate at which PaUtil_BeginCpuLoadMeasurement / + PaUtil_EndCpuLoadMeasurement are called. see http://www.portaudio.com/trac/ticket/113 +*/ + + +#include "pa_cpuload.h" + +#include <assert.h> + +#include "pa_util.h" /* for PaUtil_GetTime() */ + + +void PaUtil_InitializeCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer, double sampleRate ) +{ + assert( sampleRate > 0 ); + + measurer->samplingPeriod = 1. / sampleRate; + measurer->averageLoad = 0.; +} + +void PaUtil_ResetCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer ) +{ + measurer->averageLoad = 0.; +} + +void PaUtil_BeginCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer ) +{ + measurer->measurementStartTime = PaUtil_GetTime(); +} + + +void PaUtil_EndCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer, unsigned long framesProcessed ) +{ + double measurementEndTime, secondsFor100Percent, measuredLoad; + + if( framesProcessed > 0 ){ + measurementEndTime = PaUtil_GetTime(); + + assert( framesProcessed > 0 ); + secondsFor100Percent = framesProcessed * measurer->samplingPeriod; + + measuredLoad = (measurementEndTime - measurer->measurementStartTime) / secondsFor100Percent; + + /* Low pass filter the calculated CPU load to reduce jitter using a simple IIR low pass filter. */ + /** FIXME @todo these coefficients shouldn't be hardwired see: http://www.portaudio.com/trac/ticket/113 */ +#define LOWPASS_COEFFICIENT_0 (0.9) +#define LOWPASS_COEFFICIENT_1 (0.99999 - LOWPASS_COEFFICIENT_0) + + measurer->averageLoad = (LOWPASS_COEFFICIENT_0 * measurer->averageLoad) + + (LOWPASS_COEFFICIENT_1 * measuredLoad); + } +} + + +double PaUtil_GetCpuLoad( PaUtilCpuLoadMeasurer* measurer ) +{ + return measurer->averageLoad; +} diff --git a/portaudio/src/common/pa_cpuload.h b/portaudio/src/common/pa_cpuload.h new file mode 100644 index 0000000..8d3f618 --- /dev/null +++ b/portaudio/src/common/pa_cpuload.h @@ -0,0 +1,72 @@ +#ifndef PA_CPULOAD_H +#define PA_CPULOAD_H +/* + * $Id$ + * Portable Audio I/O Library CPU Load measurement functions + * Portable CPU load measurement facility. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 2002 Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Functions to assist in measuring the CPU utilization of a callback + stream. Used to implement the Pa_GetStreamCpuLoad() function. +*/ + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +typedef struct { + double samplingPeriod; + double measurementStartTime; + double averageLoad; +} PaUtilCpuLoadMeasurer; /**< @todo need better name than measurer */ + +void PaUtil_InitializeCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer, double sampleRate ); +void PaUtil_BeginCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer ); +void PaUtil_EndCpuLoadMeasurement( PaUtilCpuLoadMeasurer* measurer, unsigned long framesProcessed ); +void PaUtil_ResetCpuLoadMeasurer( PaUtilCpuLoadMeasurer* measurer ); +double PaUtil_GetCpuLoad( PaUtilCpuLoadMeasurer* measurer ); + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_CPULOAD_H */ diff --git a/portaudio/src/common/pa_debugprint.c b/portaudio/src/common/pa_debugprint.c new file mode 100644 index 0000000..3e4024c --- /dev/null +++ b/portaudio/src/common/pa_debugprint.c @@ -0,0 +1,123 @@ +/* + * $Id: pa_log.c $ + * Portable Audio I/O Library Multi-Host API front end + * Validate function parameters and manage multiple host APIs. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2006 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Implements log function. + + PaUtil_SetLogPrintFunction can be user called to replace the provided + DefaultLogPrint function, which writes to stderr. + One can NOT pass var_args across compiler/dll boundaries as it is not + "byte code/abi portable". So the technique used here is to allocate a local + a static array, write in it, then callback the user with a pointer to its + start. +*/ + +#include <stdio.h> +#include <stdarg.h> + +#include "pa_debugprint.h" + +// for OutputDebugStringA +#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT) + #define WIN32_LEAN_AND_MEAN // exclude rare headers + #include "windows.h" +#endif + +// User callback +static PaUtilLogCallback userCB = NULL; + +// Sets user callback +void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb) +{ + userCB = cb; +} + +/* + If your platform doesn't have vsnprintf, you are stuck with a + VERY dangerous alternative, vsprintf (with no n) +*/ +#if _MSC_VER + /* Some Windows Mobile SDKs don't define vsnprintf but all define _vsnprintf (hopefully). + According to MSDN "vsnprintf is identical to _vsnprintf". So we use _vsnprintf with MSC. + */ + #define VSNPRINTF _vsnprintf +#else + #define VSNPRINTF vsnprintf +#endif + +#define PA_LOG_BUF_SIZE 2048 + +void PaUtil_DebugPrint( const char *format, ... ) +{ + // Optional logging into Output console of Visual Studio +#if defined(_MSC_VER) && defined(PA_ENABLE_MSVC_DEBUG_OUTPUT) + { + char buf[PA_LOG_BUF_SIZE]; + va_list ap; + va_start(ap, format); + VSNPRINTF(buf, sizeof(buf), format, ap); + buf[sizeof(buf)-1] = 0; + OutputDebugStringA(buf); + va_end(ap); + } +#endif + + // Output to User-Callback + if (userCB != NULL) + { + char strdump[PA_LOG_BUF_SIZE]; + va_list ap; + va_start(ap, format); + VSNPRINTF(strdump, sizeof(strdump), format, ap); + strdump[sizeof(strdump)-1] = 0; + userCB(strdump); + va_end(ap); + } + else + // Standard output to stderr + { + va_list ap; + va_start(ap, format); + vfprintf(stderr, format, ap); + va_end(ap); + fflush(stderr); + } +} diff --git a/portaudio/src/common/pa_debugprint.h b/portaudio/src/common/pa_debugprint.h new file mode 100644 index 0000000..ca81724 --- /dev/null +++ b/portaudio/src/common/pa_debugprint.h @@ -0,0 +1,149 @@ +#ifndef PA_LOG_H +#define PA_LOG_H +/* + * Log file redirector function + * Copyright (c) 1999-2006 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src +*/ + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + + +void PaUtil_DebugPrint( const char *format, ... ); + + +/* + The basic format for log messages is described below. If you need to + add any log messages, please follow this format. + + Function entry (void function): + + "FunctionName called.\n" + + Function entry (non void function): + + "FunctionName called:\n" + "\tParam1Type param1: param1Value\n" + "\tParam2Type param2: param2Value\n" (etc...) + + + Function exit (no return value): + + "FunctionName returned.\n" + + Function exit (simple return value): + + "FunctionName returned:\n" + "\tReturnType: returnValue\n" + + If the return type is an error code, the error text is displayed in () + + If the return type is not an error code, but has taken a special value + because an error occurred, then the reason for the error is shown in [] + + If the return type is a struct ptr, the struct is dumped. + + See the code below for examples +*/ + +/** PA_DEBUG() provides a simple debug message printing facility. The macro + passes it's argument to a printf-like function called PaUtil_DebugPrint() + which prints to stderr and always flushes the stream after printing. + Because preprocessor macros cannot directly accept variable length argument + lists, calls to the macro must include an additional set of parenthesis, eg: + PA_DEBUG(("errorno: %d", 1001 )); +*/ + + +#ifdef PA_ENABLE_DEBUG_OUTPUT +#define PA_DEBUG(x) PaUtil_DebugPrint x ; +#else +#define PA_DEBUG(x) +#endif + + +#ifdef PA_LOG_API_CALLS +#define PA_LOGAPI(x) PaUtil_DebugPrint x + +#define PA_LOGAPI_ENTER(functionName) PaUtil_DebugPrint( functionName " called.\n" ) + +#define PA_LOGAPI_ENTER_PARAMS(functionName) PaUtil_DebugPrint( functionName " called:\n" ) + +#define PA_LOGAPI_EXIT(functionName) PaUtil_DebugPrint( functionName " returned.\n" ) + +#define PA_LOGAPI_EXIT_PAERROR( functionName, result ) \ + PaUtil_DebugPrint( functionName " returned:\n" ); \ + PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) ) + +#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result ) \ + PaUtil_DebugPrint( functionName " returned:\n" ); \ + PaUtil_DebugPrint("\t" resultFormatString "\n", result ) + +#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result ) \ + PaUtil_DebugPrint( functionName " returned:\n" ); \ + if( result > 0 ) \ + PaUtil_DebugPrint("\t" positiveResultFormatString "\n", result ); \ + else \ + PaUtil_DebugPrint("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) ) +#else +#define PA_LOGAPI(x) +#define PA_LOGAPI_ENTER(functionName) +#define PA_LOGAPI_ENTER_PARAMS(functionName) +#define PA_LOGAPI_EXIT(functionName) +#define PA_LOGAPI_EXIT_PAERROR( functionName, result ) +#define PA_LOGAPI_EXIT_T( functionName, resultFormatString, result ) +#define PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( functionName, positiveResultFormatString, result ) +#endif + + +typedef void (*PaUtilLogCallback ) (const char *log); + +/** + Install user provided log function +*/ +void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb); + + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_LOG_H */ diff --git a/portaudio/src/common/pa_dither.c b/portaudio/src/common/pa_dither.c new file mode 100644 index 0000000..0d1666a --- /dev/null +++ b/portaudio/src/common/pa_dither.c @@ -0,0 +1,218 @@ +/* + * $Id$ + * Portable Audio I/O Library triangular dither generator + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Functions for generating dither noise +*/ + +#include "pa_types.h" +#include "pa_dither.h" + + +/* Note that the linear congruential algorithm requires 32 bit integers + * because it uses arithmetic overflow. So use PaUint32 instead of + * unsigned long so it will work on 64 bit systems. + */ + +#define PA_DITHER_BITS_ (15) + + +void PaUtil_InitializeTriangularDitherState( PaUtilTriangularDitherGenerator *state ) +{ + state->previous = 0; + state->randSeed1 = 22222; + state->randSeed2 = 5555555; +} + + +PaInt32 PaUtil_Generate16BitTriangularDither( PaUtilTriangularDitherGenerator *state ) +{ + PaInt32 current, highPass; + + /* Generate two random numbers. */ + state->randSeed1 = (state->randSeed1 * 196314165) + 907633515; + state->randSeed2 = (state->randSeed2 * 196314165) + 907633515; + + /* Generate triangular distribution about 0. + * Shift before adding to prevent overflow which would skew the distribution. + * Also shift an extra bit for the high pass filter. + */ +#define DITHER_SHIFT_ ((sizeof(PaInt32)*8 - PA_DITHER_BITS_) + 1) + + current = (((PaInt32)state->randSeed1)>>DITHER_SHIFT_) + + (((PaInt32)state->randSeed2)>>DITHER_SHIFT_); + + /* High pass filter to reduce audibility. */ + highPass = current - state->previous; + state->previous = current; + return highPass; +} + + +/* Multiply by PA_FLOAT_DITHER_SCALE_ to get a float between -2.0 and +1.99999 */ +#define PA_FLOAT_DITHER_SCALE_ (1.0f / ((1<<PA_DITHER_BITS_)-1)) +static const float const_float_dither_scale_ = PA_FLOAT_DITHER_SCALE_; + +float PaUtil_GenerateFloatTriangularDither( PaUtilTriangularDitherGenerator *state ) +{ + PaInt32 current, highPass; + + /* Generate two random numbers. */ + state->randSeed1 = (state->randSeed1 * 196314165) + 907633515; + state->randSeed2 = (state->randSeed2 * 196314165) + 907633515; + + /* Generate triangular distribution about 0. + * Shift before adding to prevent overflow which would skew the distribution. + * Also shift an extra bit for the high pass filter. + */ + current = (((PaInt32)state->randSeed1)>>DITHER_SHIFT_) + + (((PaInt32)state->randSeed2)>>DITHER_SHIFT_); + + /* High pass filter to reduce audibility. */ + highPass = current - state->previous; + state->previous = current; + return ((float)highPass) * const_float_dither_scale_; +} + + +/* +The following alternate dither algorithms (from musicdsp.org) could be +considered +*/ + +/*Noise shaped dither (March 2000) +------------------- + +This is a simple implementation of highpass triangular-PDF dither with +2nd-order noise shaping, for use when truncating floating point audio +data to fixed point. + +The noise shaping lowers the noise floor by 11dB below 5kHz (@ 44100Hz +sample rate) compared to triangular-PDF dither. The code below assumes +input data is in the range +1 to -1 and doesn't check for overloads! + +To save time when generating dither for multiple channels you can do +things like this: r3=(r1 & 0x7F)<<8; instead of calling rand() again. + + + + int r1, r2; //rectangular-PDF random numbers + float s1, s2; //error feedback buffers + float s = 0.5f; //set to 0.0f for no noise shaping + float w = pow(2.0,bits-1); //word length (usually bits=16) + float wi= 1.0f/w; + float d = wi / RAND_MAX; //dither amplitude (2 lsb) + float o = wi * 0.5f; //remove dc offset + float in, tmp; + int out; + + +//for each sample... + + r2=r1; //can make HP-TRI dither by + r1=rand(); //subtracting previous rand() + + in += s * (s1 + s1 - s2); //error feedback + tmp = in + o + d * (float)(r1 - r2); //dc offset and dither + + out = (int)(w * tmp); //truncate downwards + if(tmp<0.0f) out--; //this is faster than floor() + + s2 = s1; + s1 = in - wi * (float)out; //error + + + +-- +paul.kellett@maxim.abel.co.uk +http://www.maxim.abel.co.uk +*/ + + +/* +16-to-8-bit first-order dither + +Type : First order error feedforward dithering code +References : Posted by Jon Watte + +Notes : +This is about as simple a dithering algorithm as you can implement, but it's +likely to sound better than just truncating to N bits. + +Note that you might not want to carry forward the full difference for infinity. +It's probably likely that the worst performance hit comes from the saturation +conditionals, which can be avoided with appropriate instructions on many DSPs +and integer SIMD type instructions, or CMOV. + +Last, if sound quality is paramount (such as when going from > 16 bits to 16 +bits) you probably want to use a higher-order dither function found elsewhere +on this site. + + +Code : +// This code will down-convert and dither a 16-bit signed short +// mono signal into an 8-bit unsigned char signal, using a first +// order forward-feeding error term dither. + +#define uchar unsigned char + +void dither_one_channel_16_to_8( short * input, uchar * output, int count, int * memory ) +{ + int m = *memory; + while( count-- > 0 ) { + int i = *input++; + i += m; + int j = i + 32768 - 128; + uchar o; + if( j < 0 ) { + o = 0; + } + else if( j > 65535 ) { + o = 255; + } + else { + o = (uchar)((j>>8)&0xff); + } + m = ((j-32768+128)-i); + *output++ = o; + } + *memory = m; +} +*/ diff --git a/portaudio/src/common/pa_dither.h b/portaudio/src/common/pa_dither.h new file mode 100644 index 0000000..4f81123 --- /dev/null +++ b/portaudio/src/common/pa_dither.h @@ -0,0 +1,106 @@ +#ifndef PA_DITHER_H +#define PA_DITHER_H +/* + * $Id$ + * Portable Audio I/O Library triangular dither generator + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Functions for generating dither noise +*/ + +#include "pa_types.h" + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +/* Note that the linear congruential algorithm requires 32 bit integers + * because it uses arithmetic overflow. So use PaUint32 instead of + * unsigned long so it will work on 64 bit systems. + */ + +/** @brief State needed to generate a dither signal */ +typedef struct PaUtilTriangularDitherGenerator{ + PaUint32 previous; + PaUint32 randSeed1; + PaUint32 randSeed2; +} PaUtilTriangularDitherGenerator; + + +/** @brief Initialize dither state */ +void PaUtil_InitializeTriangularDitherState( PaUtilTriangularDitherGenerator *ditherState ); + + +/** + @brief Calculate 2 LSB dither signal with a triangular distribution. + Ranged for adding to a 1 bit right-shifted 32 bit integer + prior to >>15. eg: +<pre> + signed long in = * + signed long dither = PaUtil_Generate16BitTriangularDither( ditherState ); + signed short out = (signed short)(((in>>1) + dither) >> 15); +</pre> + @return + A signed 32-bit integer with a range of +32767 to -32768 +*/ +PaInt32 PaUtil_Generate16BitTriangularDither( PaUtilTriangularDitherGenerator *ditherState ); + + +/** + @brief Calculate 2 LSB dither signal with a triangular distribution. + Ranged for adding to a pre-scaled float. +<pre> + float in = * + float dither = PaUtil_GenerateFloatTriangularDither( ditherState ); + // use smaller scaler to prevent overflow when we add the dither + signed short out = (signed short)(in*(32766.0f) + dither ); +</pre> + @return + A float with a range of -2.0 to +1.99999. +*/ +float PaUtil_GenerateFloatTriangularDither( PaUtilTriangularDitherGenerator *ditherState ); + + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_DITHER_H */ diff --git a/portaudio/src/common/pa_endianness.h b/portaudio/src/common/pa_endianness.h new file mode 100644 index 0000000..e074836 --- /dev/null +++ b/portaudio/src/common/pa_endianness.h @@ -0,0 +1,145 @@ +#ifndef PA_ENDIANNESS_H +#define PA_ENDIANNESS_H +/* + * $Id$ + * Portable Audio I/O Library current platform endianness macros + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Configure endianness symbols for the target processor. + + Arrange for either the PA_LITTLE_ENDIAN or PA_BIG_ENDIAN preprocessor symbols + to be defined. The one that is defined reflects the endianness of the target + platform and may be used to implement conditional compilation of byte-order + dependent code. + + If either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN is defined already, then no attempt + is made to override that setting. This may be useful if you have a better way + of determining the platform's endianness. The autoconf mechanism uses this for + example. + + A PA_VALIDATE_ENDIANNESS macro is provided to compare the compile time + and runtime endianness and raise an assertion if they don't match. +*/ + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +/* If this is an apple, we need to do detect endianness this way */ +#if defined(__APPLE__) + /* we need to do some endian detection that is sensitive to hardware arch */ + #if defined(__LITTLE_ENDIAN__) + #if !defined( PA_LITTLE_ENDIAN ) + #define PA_LITTLE_ENDIAN + #endif + #if defined( PA_BIG_ENDIAN ) + #undef PA_BIG_ENDIAN + #endif + #else + #if !defined( PA_BIG_ENDIAN ) + #define PA_BIG_ENDIAN + #endif + #if defined( PA_LITTLE_ENDIAN ) + #undef PA_LITTLE_ENDIAN + #endif + #endif +#else + /* this is not an apple, so first check the existing defines, and, failing that, + detect well-known architectures. */ + + #if defined(PA_LITTLE_ENDIAN) || defined(PA_BIG_ENDIAN) + /* endianness define has been set externally, such as by autoconf */ + + #if defined(PA_LITTLE_ENDIAN) && defined(PA_BIG_ENDIAN) + #error both PA_LITTLE_ENDIAN and PA_BIG_ENDIAN have been defined externally to pa_endianness.h - only one endianness at a time please + #endif + + #else + /* endianness define has not been set externally */ + + /* set PA_LITTLE_ENDIAN or PA_BIG_ENDIAN by testing well known platform specific defines */ + + #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || defined(LITTLE_ENDIAN) || defined(__i386) || defined(_M_IX86) || defined(__x86_64__) + #define PA_LITTLE_ENDIAN /* win32, assume intel byte order */ + #else + #define PA_BIG_ENDIAN + #endif + #endif + + #if !defined(PA_LITTLE_ENDIAN) && !defined(PA_BIG_ENDIAN) + /* + If the following error is raised, you either need to modify the code above + to automatically determine the endianness from other symbols defined on your + platform, or define either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN externally. + */ + #error pa_endianness.h was unable to automatically determine the endianness of the target platform + #endif + +#endif + + +/* PA_VALIDATE_ENDIANNESS compares the compile time and runtime endianness, + and raises an assertion if they don't match. <assert.h> must be included in + the context in which this macro is used. +*/ +#if defined(NDEBUG) + #define PA_VALIDATE_ENDIANNESS +#else + #if defined(PA_LITTLE_ENDIAN) + #define PA_VALIDATE_ENDIANNESS \ + { \ + const long nativeOne = 1; \ + assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 1 ); \ + } + #elif defined(PA_BIG_ENDIAN) + #define PA_VALIDATE_ENDIANNESS \ + { \ + const long nativeOne = 1; \ + assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 0 ); \ + } + #endif +#endif + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_ENDIANNESS_H */ diff --git a/portaudio/src/common/pa_front.c b/portaudio/src/common/pa_front.c new file mode 100644 index 0000000..65a656f --- /dev/null +++ b/portaudio/src/common/pa_front.c @@ -0,0 +1,1810 @@ +/* + * $Id$ + * Portable Audio I/O Library Multi-Host API front end + * Validate function parameters and manage multiple host APIs. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2008 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Implements PortAudio API functions defined in portaudio.h, checks + some errors, delegates platform-specific behavior to host API implementations. + + Implements the functions defined in the PortAudio API (portaudio.h), + validates some parameters and checks for state inconsistencies before + forwarding API requests to specific Host API implementations (via the + interface declared in pa_hostapi.h), and Streams (via the interface + declared in pa_stream.h). + + This file manages initialization and termination of Host API + implementations via initializer functions stored in the paHostApiInitializers + global array (usually defined in an os-specific pa_[os]_hostapis.c file). + + This file maintains a list of all open streams and closes them at Pa_Terminate(). + + Some utility functions declared in pa_util.h are implemented in this file. + + All PortAudio API functions can be conditionally compiled with logging code. + To compile with logging, define the PA_LOG_API_CALLS precompiler symbol. +*/ + + +#include <stdio.h> +#include <memory.h> +#include <string.h> +#include <stdlib.h> /* needed for strtol() */ +#include <assert.h> /* needed by PA_VALIDATE_ENDIANNESS */ + +#include "portaudio.h" +#include "pa_util.h" +#include "pa_endianness.h" +#include "pa_types.h" +#include "pa_hostapi.h" +#include "pa_stream.h" +#include "pa_trace.h" /* still useful?*/ +#include "pa_debugprint.h" + +#ifndef PA_GIT_REVISION +#include "pa_gitrevision.h" +#endif + +/** + * This is incremented if we make incompatible API changes. + * This version scheme is based loosely on http://semver.org/ + */ +#define paVersionMajor 19 + +/** + * This is incremented when we add functionality in a backwards-compatible manner. + * Or it is set to zero when paVersionMajor is incremented. + */ +#define paVersionMinor 7 + +/** + * This is incremented when we make backwards-compatible bug fixes. + * Or it is set to zero when paVersionMinor changes. + */ +#define paVersionSubMinor 0 + +/** + * This is a combination of paVersionMajor, paVersionMinor and paVersionSubMinor. + * It will always increase so that version numbers can be compared as integers to + * see which is later. + */ +#define paVersion paMakeVersionNumber(paVersionMajor, paVersionMinor, paVersionSubMinor) + +#define STRINGIFY(x) #x +#define TOSTRING(x) STRINGIFY(x) + +#define PA_VERSION_STRING_ TOSTRING(paVersionMajor) "." TOSTRING(paVersionMinor) "." TOSTRING(paVersionSubMinor) +#define PA_VERSION_TEXT_ "PortAudio V" PA_VERSION_STRING_ "-devel, revision " TOSTRING(PA_GIT_REVISION) + +int Pa_GetVersion( void ) +{ + return paVersion; +} + +const char* Pa_GetVersionText( void ) +{ + return PA_VERSION_TEXT_; +} + +static PaVersionInfo versionInfo_ = { + /*.versionMajor =*/ paVersionMajor, + /*.versionMinor =*/ paVersionMinor, + /*.versionSubMinor =*/ paVersionSubMinor, + /*.versionControlRevision =*/ TOSTRING(PA_GIT_REVISION), + /*.versionText =*/ PA_VERSION_TEXT_ +}; + +const PaVersionInfo* Pa_GetVersionInfo( void ) +{ + return &versionInfo_; +} + +#define PA_LAST_HOST_ERROR_TEXT_LENGTH_ 1024 + +static char lastHostErrorText_[ PA_LAST_HOST_ERROR_TEXT_LENGTH_ + 1 ] = {0}; + +static PaHostErrorInfo lastHostErrorInfo_ = { (PaHostApiTypeId)-1, 0, lastHostErrorText_ }; + + +void PaUtil_SetLastHostErrorInfo( PaHostApiTypeId hostApiType, long errorCode, + const char *errorText ) +{ + lastHostErrorInfo_.hostApiType = hostApiType; + lastHostErrorInfo_.errorCode = errorCode; + + strncpy( lastHostErrorText_, errorText, PA_LAST_HOST_ERROR_TEXT_LENGTH_ ); +} + + + +static PaUtilHostApiRepresentation **hostApis_ = 0; +static int hostApisCount_ = 0; +static int defaultHostApiIndex_ = 0; +static int initializationCount_ = 0; +static int deviceCount_ = 0; + +PaUtilStreamRepresentation *firstOpenStream_ = NULL; + + +#define PA_IS_INITIALISED_ (initializationCount_ != 0) + + +static int CountHostApiInitializers( void ) +{ + int result = 0; + + while( paHostApiInitializers[ result ] != 0 ) + ++result; + return result; +} + + +static void TerminateHostApis( void ) +{ + /* terminate in reverse order from initialization */ + PA_DEBUG(("TerminateHostApis in \n")); + + while( hostApisCount_ > 0 ) + { + --hostApisCount_; + hostApis_[hostApisCount_]->Terminate( hostApis_[hostApisCount_] ); + } + hostApisCount_ = 0; + defaultHostApiIndex_ = 0; + deviceCount_ = 0; + + if( hostApis_ != 0 ) + PaUtil_FreeMemory( hostApis_ ); + hostApis_ = 0; + + PA_DEBUG(("TerminateHostApis out\n")); +} + + +static PaError InitializeHostApis( void ) +{ + PaError result = paNoError; + int i, initializerCount, baseDeviceIndex; + + initializerCount = CountHostApiInitializers(); + + hostApis_ = (PaUtilHostApiRepresentation**)PaUtil_AllocateMemory( + sizeof(PaUtilHostApiRepresentation*) * initializerCount ); + if( !hostApis_ ) + { + result = paInsufficientMemory; + goto error; + } + + hostApisCount_ = 0; + defaultHostApiIndex_ = -1; /* indicates that we haven't determined the default host API yet */ + deviceCount_ = 0; + baseDeviceIndex = 0; + + for( i=0; i< initializerCount; ++i ) + { + hostApis_[hostApisCount_] = NULL; + + PA_DEBUG(( "before paHostApiInitializers[%d].\n",i)); + + result = paHostApiInitializers[i]( &hostApis_[hostApisCount_], hostApisCount_ ); + if( result != paNoError ) + goto error; + + PA_DEBUG(( "after paHostApiInitializers[%d].\n",i)); + + if( hostApis_[hostApisCount_] ) + { + PaUtilHostApiRepresentation* hostApi = hostApis_[hostApisCount_]; + assert( hostApi->info.defaultInputDevice < hostApi->info.deviceCount ); + assert( hostApi->info.defaultOutputDevice < hostApi->info.deviceCount ); + + /* the first successfully initialized host API with a default input *or* + output device is used as the default host API. + */ + if( (defaultHostApiIndex_ == -1) && + ( hostApi->info.defaultInputDevice != paNoDevice + || hostApi->info.defaultOutputDevice != paNoDevice ) ) + { + defaultHostApiIndex_ = hostApisCount_; + } + + hostApi->privatePaFrontInfo.baseDeviceIndex = baseDeviceIndex; + + if( hostApi->info.defaultInputDevice != paNoDevice ) + hostApi->info.defaultInputDevice += baseDeviceIndex; + + if( hostApi->info.defaultOutputDevice != paNoDevice ) + hostApi->info.defaultOutputDevice += baseDeviceIndex; + + baseDeviceIndex += hostApi->info.deviceCount; + deviceCount_ += hostApi->info.deviceCount; + + ++hostApisCount_; + } + } + + /* if no host APIs have devices, the default host API is the first initialized host API */ + if( defaultHostApiIndex_ == -1 ) + defaultHostApiIndex_ = 0; + + return result; + +error: + TerminateHostApis(); + return result; +} + + +/* + FindHostApi() finds the index of the host api to which + <device> belongs and returns it. if <hostSpecificDeviceIndex> is + non-null, the host specific device index is returned in it. + returns -1 if <device> is out of range. + +*/ +static int FindHostApi( PaDeviceIndex device, int *hostSpecificDeviceIndex ) +{ + int i=0; + + if( !PA_IS_INITIALISED_ ) + return -1; + + if( device < 0 ) + return -1; + + while( i < hostApisCount_ + && device >= hostApis_[i]->info.deviceCount ) + { + + device -= hostApis_[i]->info.deviceCount; + ++i; + } + + if( i >= hostApisCount_ ) + return -1; + + if( hostSpecificDeviceIndex ) + *hostSpecificDeviceIndex = device; + + return i; +} + + +static void AddOpenStream( PaStream* stream ) +{ + ((PaUtilStreamRepresentation*)stream)->nextOpenStream = firstOpenStream_; + firstOpenStream_ = (PaUtilStreamRepresentation*)stream; +} + + +static void RemoveOpenStream( PaStream* stream ) +{ + PaUtilStreamRepresentation *previous = NULL; + PaUtilStreamRepresentation *current = firstOpenStream_; + + while( current != NULL ) + { + if( ((PaStream*)current) == stream ) + { + if( previous == NULL ) + { + firstOpenStream_ = current->nextOpenStream; + } + else + { + previous->nextOpenStream = current->nextOpenStream; + } + return; + } + else + { + previous = current; + current = current->nextOpenStream; + } + } +} + + +static void CloseOpenStreams( void ) +{ + /* we call Pa_CloseStream() here to ensure that the same destruction + logic is used for automatically closed streams */ + + while( firstOpenStream_ != NULL ) + Pa_CloseStream( firstOpenStream_ ); +} + + +PaError Pa_Initialize( void ) +{ + PaError result; + + PA_LOGAPI_ENTER( "Pa_Initialize" ); + + if( PA_IS_INITIALISED_ ) + { + ++initializationCount_; + result = paNoError; + } + else + { + PA_VALIDATE_TYPE_SIZES; + PA_VALIDATE_ENDIANNESS; + + PaUtil_InitializeClock(); + PaUtil_ResetTraceMessages(); + + result = InitializeHostApis(); + if( result == paNoError ) + ++initializationCount_; + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_Initialize", result ); + + return result; +} + + +PaError Pa_Terminate( void ) +{ + PaError result; + + PA_LOGAPI_ENTER( "Pa_Terminate" ); + + if( PA_IS_INITIALISED_ ) + { + // leave initializationCount_>0 so that Pa_CloseStream() can execute + if( initializationCount_ == 1 ) + { + CloseOpenStreams(); + + TerminateHostApis(); + + PaUtil_DumpTraceMessages(); + } + --initializationCount_; + result = paNoError; + } + else + { + result= paNotInitialized; + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_Terminate", result ); + + return result; +} + + +const PaHostErrorInfo* Pa_GetLastHostErrorInfo( void ) +{ + return &lastHostErrorInfo_; +} + + +const char *Pa_GetErrorText( PaError errorCode ) +{ + const char *result; + + switch( errorCode ) + { + case paNoError: result = "Success"; break; + case paNotInitialized: result = "PortAudio not initialized"; break; + /** @todo could catenate the last host error text to result in the case of paUnanticipatedHostError. see: http://www.portaudio.com/trac/ticket/114 */ + case paUnanticipatedHostError: result = "Unanticipated host error"; break; + case paInvalidChannelCount: result = "Invalid number of channels"; break; + case paInvalidSampleRate: result = "Invalid sample rate"; break; + case paInvalidDevice: result = "Invalid device"; break; + case paInvalidFlag: result = "Invalid flag"; break; + case paSampleFormatNotSupported: result = "Sample format not supported"; break; + case paBadIODeviceCombination: result = "Illegal combination of I/O devices"; break; + case paInsufficientMemory: result = "Insufficient memory"; break; + case paBufferTooBig: result = "Buffer too big"; break; + case paBufferTooSmall: result = "Buffer too small"; break; + case paNullCallback: result = "No callback routine specified"; break; + case paBadStreamPtr: result = "Invalid stream pointer"; break; + case paTimedOut: result = "Wait timed out"; break; + case paInternalError: result = "Internal PortAudio error"; break; + case paDeviceUnavailable: result = "Device unavailable"; break; + case paIncompatibleHostApiSpecificStreamInfo: result = "Incompatible host API specific stream info"; break; + case paStreamIsStopped: result = "Stream is stopped"; break; + case paStreamIsNotStopped: result = "Stream is not stopped"; break; + case paInputOverflowed: result = "Input overflowed"; break; + case paOutputUnderflowed: result = "Output underflowed"; break; + case paHostApiNotFound: result = "Host API not found"; break; + case paInvalidHostApi: result = "Invalid host API"; break; + case paCanNotReadFromACallbackStream: result = "Can't read from a callback stream"; break; + case paCanNotWriteToACallbackStream: result = "Can't write to a callback stream"; break; + case paCanNotReadFromAnOutputOnlyStream: result = "Can't read from an output only stream"; break; + case paCanNotWriteToAnInputOnlyStream: result = "Can't write to an input only stream"; break; + case paIncompatibleStreamHostApi: result = "Incompatible stream host API"; break; + case paBadBufferPtr: result = "Bad buffer pointer"; break; + default: + if( errorCode > 0 ) + result = "Invalid error code (value greater than zero)"; + else + result = "Invalid error code"; + break; + } + return result; +} + + +PaHostApiIndex Pa_HostApiTypeIdToHostApiIndex( PaHostApiTypeId type ) +{ + PaHostApiIndex result; + int i; + + PA_LOGAPI_ENTER_PARAMS( "Pa_HostApiTypeIdToHostApiIndex" ); + PA_LOGAPI(("\tPaHostApiTypeId type: %d\n", type )); + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + result = paHostApiNotFound; + + for( i=0; i < hostApisCount_; ++i ) + { + if( hostApis_[i]->info.type == type ) + { + result = i; + break; + } + } + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_HostApiTypeIdToHostApiIndex", "PaHostApiIndex: %d", result ); + + return result; +} + + +PaError PaUtil_GetHostApiRepresentation( struct PaUtilHostApiRepresentation **hostApi, + PaHostApiTypeId type ) +{ + PaError result; + int i; + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + result = paHostApiNotFound; + + for( i=0; i < hostApisCount_; ++i ) + { + if( hostApis_[i]->info.type == type ) + { + *hostApi = hostApis_[i]; + result = paNoError; + break; + } + } + } + + return result; +} + + +PaError PaUtil_DeviceIndexToHostApiDeviceIndex( + PaDeviceIndex *hostApiDevice, PaDeviceIndex device, struct PaUtilHostApiRepresentation *hostApi ) +{ + PaError result; + PaDeviceIndex x; + + x = device - hostApi->privatePaFrontInfo.baseDeviceIndex; + + if( x < 0 || x >= hostApi->info.deviceCount ) + { + result = paInvalidDevice; + } + else + { + *hostApiDevice = x; + result = paNoError; + } + + return result; +} + + +PaHostApiIndex Pa_GetHostApiCount( void ) +{ + int result; + + PA_LOGAPI_ENTER( "Pa_GetHostApiCount" ); + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + result = hostApisCount_; + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_GetHostApiCount", "PaHostApiIndex: %d", result ); + + return result; +} + + +PaHostApiIndex Pa_GetDefaultHostApi( void ) +{ + int result; + + PA_LOGAPI_ENTER( "Pa_GetDefaultHostApi" ); + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + result = defaultHostApiIndex_; + + /* internal consistency check: make sure that the default host api + index is within range */ + + if( result < 0 || result >= hostApisCount_ ) + { + result = paInternalError; + } + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_GetDefaultHostApi", "PaHostApiIndex: %d", result ); + + return result; +} + + +const PaHostApiInfo* Pa_GetHostApiInfo( PaHostApiIndex hostApi ) +{ + PaHostApiInfo *info; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetHostApiInfo" ); + PA_LOGAPI(("\tPaHostApiIndex hostApi: %d\n", hostApi )); + + if( !PA_IS_INITIALISED_ ) + { + info = NULL; + + PA_LOGAPI(("Pa_GetHostApiInfo returned:\n" )); + PA_LOGAPI(("\tPaHostApiInfo*: NULL [ PortAudio not initialized ]\n" )); + + } + else if( hostApi < 0 || hostApi >= hostApisCount_ ) + { + info = NULL; + + PA_LOGAPI(("Pa_GetHostApiInfo returned:\n" )); + PA_LOGAPI(("\tPaHostApiInfo*: NULL [ hostApi out of range ]\n" )); + + } + else + { + info = &hostApis_[hostApi]->info; + + PA_LOGAPI(("Pa_GetHostApiInfo returned:\n" )); + PA_LOGAPI(("\tPaHostApiInfo*: 0x%p\n", info )); + PA_LOGAPI(("\t{\n" )); + PA_LOGAPI(("\t\tint structVersion: %d\n", info->structVersion )); + PA_LOGAPI(("\t\tPaHostApiTypeId type: %d\n", info->type )); + PA_LOGAPI(("\t\tconst char *name: %s\n", info->name )); + PA_LOGAPI(("\t}\n" )); + + } + + return info; +} + + +PaDeviceIndex Pa_HostApiDeviceIndexToDeviceIndex( PaHostApiIndex hostApi, int hostApiDeviceIndex ) +{ + PaDeviceIndex result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_HostApiDeviceIndexToPaDeviceIndex" ); + PA_LOGAPI(("\tPaHostApiIndex hostApi: %d\n", hostApi )); + PA_LOGAPI(("\tint hostApiDeviceIndex: %d\n", hostApiDeviceIndex )); + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + if( hostApi < 0 || hostApi >= hostApisCount_ ) + { + result = paInvalidHostApi; + } + else + { + if( hostApiDeviceIndex < 0 || + hostApiDeviceIndex >= hostApis_[hostApi]->info.deviceCount ) + { + result = paInvalidDevice; + } + else + { + result = hostApis_[hostApi]->privatePaFrontInfo.baseDeviceIndex + hostApiDeviceIndex; + } + } + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_HostApiDeviceIndexToPaDeviceIndex", "PaDeviceIndex: %d", result ); + + return result; +} + + +PaDeviceIndex Pa_GetDeviceCount( void ) +{ + PaDeviceIndex result; + + PA_LOGAPI_ENTER( "Pa_GetDeviceCount" ); + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + } + else + { + result = deviceCount_; + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_GetDeviceCount", "PaDeviceIndex: %d", result ); + + return result; +} + + +PaDeviceIndex Pa_GetDefaultInputDevice( void ) +{ + PaHostApiIndex hostApi; + PaDeviceIndex result; + + PA_LOGAPI_ENTER( "Pa_GetDefaultInputDevice" ); + + hostApi = Pa_GetDefaultHostApi(); + if( hostApi < 0 ) + { + result = paNoDevice; + } + else + { + result = hostApis_[hostApi]->info.defaultInputDevice; + } + + PA_LOGAPI_EXIT_T( "Pa_GetDefaultInputDevice", "PaDeviceIndex: %d", result ); + + return result; +} + + +PaDeviceIndex Pa_GetDefaultOutputDevice( void ) +{ + PaHostApiIndex hostApi; + PaDeviceIndex result; + + PA_LOGAPI_ENTER( "Pa_GetDefaultOutputDevice" ); + + hostApi = Pa_GetDefaultHostApi(); + if( hostApi < 0 ) + { + result = paNoDevice; + } + else + { + result = hostApis_[hostApi]->info.defaultOutputDevice; + } + + PA_LOGAPI_EXIT_T( "Pa_GetDefaultOutputDevice", "PaDeviceIndex: %d", result ); + + return result; +} + + +const PaDeviceInfo* Pa_GetDeviceInfo( PaDeviceIndex device ) +{ + int hostSpecificDeviceIndex; + int hostApiIndex = FindHostApi( device, &hostSpecificDeviceIndex ); + PaDeviceInfo *result; + + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetDeviceInfo" ); + PA_LOGAPI(("\tPaDeviceIndex device: %d\n", device )); + + if( hostApiIndex < 0 ) + { + result = NULL; + + PA_LOGAPI(("Pa_GetDeviceInfo returned:\n" )); + PA_LOGAPI(("\tPaDeviceInfo* NULL [ invalid device index ]\n" )); + + } + else + { + result = hostApis_[hostApiIndex]->deviceInfos[ hostSpecificDeviceIndex ]; + + PA_LOGAPI(("Pa_GetDeviceInfo returned:\n" )); + PA_LOGAPI(("\tPaDeviceInfo*: 0x%p:\n", result )); + PA_LOGAPI(("\t{\n" )); + + PA_LOGAPI(("\t\tint structVersion: %d\n", result->structVersion )); + PA_LOGAPI(("\t\tconst char *name: %s\n", result->name )); + PA_LOGAPI(("\t\tPaHostApiIndex hostApi: %d\n", result->hostApi )); + PA_LOGAPI(("\t\tint maxInputChannels: %d\n", result->maxInputChannels )); + PA_LOGAPI(("\t\tint maxOutputChannels: %d\n", result->maxOutputChannels )); + PA_LOGAPI(("\t}\n" )); + + } + + return result; +} + + +/* + SampleFormatIsValid() returns 1 if sampleFormat is a sample format + defined in portaudio.h, or 0 otherwise. +*/ +static int SampleFormatIsValid( PaSampleFormat format ) +{ + switch( format & ~paNonInterleaved ) + { + case paFloat32: return 1; + case paInt16: return 1; + case paInt32: return 1; + case paInt24: return 1; + case paInt8: return 1; + case paUInt8: return 1; + case paCustomFormat: return 1; + default: return 0; + } +} + +/* + NOTE: make sure this validation list is kept synchronised with the one in + pa_hostapi.h + + ValidateOpenStreamParameters() checks that parameters to Pa_OpenStream() + conform to the expected values as described below. This function is + also designed to be used with the proposed Pa_IsFormatSupported() function. + + There are basically two types of validation that could be performed: + Generic conformance validation, and device capability mismatch + validation. This function performs only generic conformance validation. + Validation that would require knowledge of device capabilities is + not performed because of potentially complex relationships between + combinations of parameters - for example, even if the sampleRate + seems ok, it might not be for a duplex stream - we have no way of + checking this in an API-neutral way, so we don't try. + + On success the function returns PaNoError and fills in hostApi, + hostApiInputDeviceID, and hostApiOutputDeviceID fields. On failure + the function returns an error code indicating the first encountered + parameter error. + + + If ValidateOpenStreamParameters() returns paNoError, the following + assertions are guaranteed to be true. + + - at least one of inputParameters & outputParmeters is valid (not NULL) + + - if inputParameters & outputParameters are both valid, that + inputParameters->device & outputParameters->device both use the same host api + + PaDeviceIndex inputParameters->device + - is within range (0 to Pa_GetDeviceCount-1) Or: + - is paUseHostApiSpecificDeviceSpecification and + inputParameters->hostApiSpecificStreamInfo is non-NULL and refers + to a valid host api + + int inputParameters->channelCount + - if inputParameters->device is not paUseHostApiSpecificDeviceSpecification, channelCount is > 0 + - upper bound is NOT validated against device capabilities + + PaSampleFormat inputParameters->sampleFormat + - is one of the sample formats defined in portaudio.h + + void *inputParameters->hostApiSpecificStreamInfo + - if supplied its hostApi field matches the input device's host Api + + PaDeviceIndex outputParmeters->device + - is within range (0 to Pa_GetDeviceCount-1) + + int outputParmeters->channelCount + - if inputDevice is valid, channelCount is > 0 + - upper bound is NOT validated against device capabilities + + PaSampleFormat outputParmeters->sampleFormat + - is one of the sample formats defined in portaudio.h + + void *outputParmeters->hostApiSpecificStreamInfo + - if supplied its hostApi field matches the output device's host Api + + double sampleRate + - is not an 'absurd' rate (less than 1000. or greater than 384000.) + - sampleRate is NOT validated against device capabilities + + PaStreamFlags streamFlags + - unused platform neutral flags are zero + - paNeverDropInput is only used for full-duplex callback streams with + variable buffer size (paFramesPerBufferUnspecified) +*/ +static PaError ValidateOpenStreamParameters( + const PaStreamParameters *inputParameters, + const PaStreamParameters *outputParameters, + double sampleRate, + unsigned long framesPerBuffer, + PaStreamFlags streamFlags, + PaStreamCallback *streamCallback, + PaUtilHostApiRepresentation **hostApi, + PaDeviceIndex *hostApiInputDevice, + PaDeviceIndex *hostApiOutputDevice ) +{ + int inputHostApiIndex = -1; /* Suppress uninitialised var warnings: compiler does */ + int outputHostApiIndex = -1; /* not see that if inputParameters and outputParameters */ + /* are both nonzero, these indices are set. */ + + if( (inputParameters == NULL) && (outputParameters == NULL) ) + { + return paInvalidDevice; /** @todo should be a new error code "invalid device parameters" or something */ + } + else + { + if( inputParameters == NULL ) + { + *hostApiInputDevice = paNoDevice; + } + else if( inputParameters->device == paUseHostApiSpecificDeviceSpecification ) + { + if( inputParameters->hostApiSpecificStreamInfo ) + { + inputHostApiIndex = Pa_HostApiTypeIdToHostApiIndex( + ((PaUtilHostApiSpecificStreamInfoHeader*)inputParameters->hostApiSpecificStreamInfo)->hostApiType ); + + if( inputHostApiIndex != -1 ) + { + *hostApiInputDevice = paUseHostApiSpecificDeviceSpecification; + *hostApi = hostApis_[inputHostApiIndex]; + } + else + { + return paInvalidDevice; + } + } + else + { + return paInvalidDevice; + } + } + else + { + if( inputParameters->device < 0 || inputParameters->device >= deviceCount_ ) + return paInvalidDevice; + + inputHostApiIndex = FindHostApi( inputParameters->device, hostApiInputDevice ); + if( inputHostApiIndex < 0 ) + return paInternalError; + + *hostApi = hostApis_[inputHostApiIndex]; + + if( inputParameters->channelCount <= 0 ) + return paInvalidChannelCount; + + if( !SampleFormatIsValid( inputParameters->sampleFormat ) ) + return paSampleFormatNotSupported; + + if( inputParameters->hostApiSpecificStreamInfo != NULL ) + { + if( ((PaUtilHostApiSpecificStreamInfoHeader*)inputParameters->hostApiSpecificStreamInfo)->hostApiType + != (*hostApi)->info.type ) + return paIncompatibleHostApiSpecificStreamInfo; + } + } + + if( outputParameters == NULL ) + { + *hostApiOutputDevice = paNoDevice; + } + else if( outputParameters->device == paUseHostApiSpecificDeviceSpecification ) + { + if( outputParameters->hostApiSpecificStreamInfo ) + { + outputHostApiIndex = Pa_HostApiTypeIdToHostApiIndex( + ((PaUtilHostApiSpecificStreamInfoHeader*)outputParameters->hostApiSpecificStreamInfo)->hostApiType ); + + if( outputHostApiIndex != -1 ) + { + *hostApiOutputDevice = paUseHostApiSpecificDeviceSpecification; + *hostApi = hostApis_[outputHostApiIndex]; + } + else + { + return paInvalidDevice; + } + } + else + { + return paInvalidDevice; + } + } + else + { + if( outputParameters->device < 0 || outputParameters->device >= deviceCount_ ) + return paInvalidDevice; + + outputHostApiIndex = FindHostApi( outputParameters->device, hostApiOutputDevice ); + if( outputHostApiIndex < 0 ) + return paInternalError; + + *hostApi = hostApis_[outputHostApiIndex]; + + if( outputParameters->channelCount <= 0 ) + return paInvalidChannelCount; + + if( !SampleFormatIsValid( outputParameters->sampleFormat ) ) + return paSampleFormatNotSupported; + + if( outputParameters->hostApiSpecificStreamInfo != NULL ) + { + if( ((PaUtilHostApiSpecificStreamInfoHeader*)outputParameters->hostApiSpecificStreamInfo)->hostApiType + != (*hostApi)->info.type ) + return paIncompatibleHostApiSpecificStreamInfo; + } + } + + if( (inputParameters != NULL) && (outputParameters != NULL) ) + { + /* ensure that both devices use the same API */ + if( inputHostApiIndex != outputHostApiIndex ) + return paBadIODeviceCombination; + } + } + + + /* Check for absurd sample rates. */ + if( (sampleRate < 1000.0) || (sampleRate > 384000.0) ) + return paInvalidSampleRate; + + if( ((streamFlags & ~paPlatformSpecificFlags) & ~(paClipOff | paDitherOff | paNeverDropInput | paPrimeOutputBuffersUsingStreamCallback ) ) != 0 ) + return paInvalidFlag; + + if( streamFlags & paNeverDropInput ) + { + /* must be a callback stream */ + if( !streamCallback ) + return paInvalidFlag; + + /* must be a full duplex stream */ + if( (inputParameters == NULL) || (outputParameters == NULL) ) + return paInvalidFlag; + + /* must use paFramesPerBufferUnspecified */ + if( framesPerBuffer != paFramesPerBufferUnspecified ) + return paInvalidFlag; + } + + return paNoError; +} + + +PaError Pa_IsFormatSupported( const PaStreamParameters *inputParameters, + const PaStreamParameters *outputParameters, + double sampleRate ) +{ + PaError result; + PaUtilHostApiRepresentation *hostApi = 0; + PaDeviceIndex hostApiInputDevice = paNoDevice, hostApiOutputDevice = paNoDevice; + PaStreamParameters hostApiInputParameters, hostApiOutputParameters; + PaStreamParameters *hostApiInputParametersPtr, *hostApiOutputParametersPtr; + + +#ifdef PA_LOG_API_CALLS + PA_LOGAPI_ENTER_PARAMS( "Pa_IsFormatSupported" ); + + if( inputParameters == NULL ){ + PA_LOGAPI(("\tPaStreamParameters *inputParameters: NULL\n" )); + }else{ + PA_LOGAPI(("\tPaStreamParameters *inputParameters: 0x%p\n", inputParameters )); + PA_LOGAPI(("\tPaDeviceIndex inputParameters->device: %d\n", inputParameters->device )); + PA_LOGAPI(("\tint inputParameters->channelCount: %d\n", inputParameters->channelCount )); + PA_LOGAPI(("\tPaSampleFormat inputParameters->sampleFormat: %d\n", inputParameters->sampleFormat )); + PA_LOGAPI(("\tPaTime inputParameters->suggestedLatency: %f\n", inputParameters->suggestedLatency )); + PA_LOGAPI(("\tvoid *inputParameters->hostApiSpecificStreamInfo: 0x%p\n", inputParameters->hostApiSpecificStreamInfo )); + } + + if( outputParameters == NULL ){ + PA_LOGAPI(("\tPaStreamParameters *outputParameters: NULL\n" )); + }else{ + PA_LOGAPI(("\tPaStreamParameters *outputParameters: 0x%p\n", outputParameters )); + PA_LOGAPI(("\tPaDeviceIndex outputParameters->device: %d\n", outputParameters->device )); + PA_LOGAPI(("\tint outputParameters->channelCount: %d\n", outputParameters->channelCount )); + PA_LOGAPI(("\tPaSampleFormat outputParameters->sampleFormat: %d\n", outputParameters->sampleFormat )); + PA_LOGAPI(("\tPaTime outputParameters->suggestedLatency: %f\n", outputParameters->suggestedLatency )); + PA_LOGAPI(("\tvoid *outputParameters->hostApiSpecificStreamInfo: 0x%p\n", outputParameters->hostApiSpecificStreamInfo )); + } + + PA_LOGAPI(("\tdouble sampleRate: %g\n", sampleRate )); +#endif + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + + PA_LOGAPI_EXIT_PAERROR( "Pa_IsFormatSupported", result ); + return result; + } + + result = ValidateOpenStreamParameters( inputParameters, + outputParameters, + sampleRate, 0, paNoFlag, 0, + &hostApi, + &hostApiInputDevice, + &hostApiOutputDevice ); + if( result != paNoError ) + { + PA_LOGAPI_EXIT_PAERROR( "Pa_IsFormatSupported", result ); + return result; + } + + + if( inputParameters ) + { + hostApiInputParameters.device = hostApiInputDevice; + hostApiInputParameters.channelCount = inputParameters->channelCount; + hostApiInputParameters.sampleFormat = inputParameters->sampleFormat; + hostApiInputParameters.suggestedLatency = inputParameters->suggestedLatency; + hostApiInputParameters.hostApiSpecificStreamInfo = inputParameters->hostApiSpecificStreamInfo; + hostApiInputParametersPtr = &hostApiInputParameters; + } + else + { + hostApiInputParametersPtr = NULL; + } + + if( outputParameters ) + { + hostApiOutputParameters.device = hostApiOutputDevice; + hostApiOutputParameters.channelCount = outputParameters->channelCount; + hostApiOutputParameters.sampleFormat = outputParameters->sampleFormat; + hostApiOutputParameters.suggestedLatency = outputParameters->suggestedLatency; + hostApiOutputParameters.hostApiSpecificStreamInfo = outputParameters->hostApiSpecificStreamInfo; + hostApiOutputParametersPtr = &hostApiOutputParameters; + } + else + { + hostApiOutputParametersPtr = NULL; + } + + result = hostApi->IsFormatSupported( hostApi, + hostApiInputParametersPtr, hostApiOutputParametersPtr, + sampleRate ); + +#ifdef PA_LOG_API_CALLS + PA_LOGAPI(("Pa_OpenStream returned:\n" )); + if( result == paFormatIsSupported ) + PA_LOGAPI(("\tPaError: 0 [ paFormatIsSupported ]\n" )); + else + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); +#endif + + return result; +} + + +PaError Pa_OpenStream( PaStream** stream, + const PaStreamParameters *inputParameters, + const PaStreamParameters *outputParameters, + double sampleRate, + unsigned long framesPerBuffer, + PaStreamFlags streamFlags, + PaStreamCallback *streamCallback, + void *userData ) +{ + PaError result; + PaUtilHostApiRepresentation *hostApi = 0; + PaDeviceIndex hostApiInputDevice = paNoDevice, hostApiOutputDevice = paNoDevice; + PaStreamParameters hostApiInputParameters, hostApiOutputParameters; + PaStreamParameters *hostApiInputParametersPtr, *hostApiOutputParametersPtr; + + +#ifdef PA_LOG_API_CALLS + PA_LOGAPI_ENTER_PARAMS( "Pa_OpenStream" ); + PA_LOGAPI(("\tPaStream** stream: 0x%p\n", stream )); + + if( inputParameters == NULL ){ + PA_LOGAPI(("\tPaStreamParameters *inputParameters: NULL\n" )); + }else{ + PA_LOGAPI(("\tPaStreamParameters *inputParameters: 0x%p\n", inputParameters )); + PA_LOGAPI(("\tPaDeviceIndex inputParameters->device: %d\n", inputParameters->device )); + PA_LOGAPI(("\tint inputParameters->channelCount: %d\n", inputParameters->channelCount )); + PA_LOGAPI(("\tPaSampleFormat inputParameters->sampleFormat: %d\n", inputParameters->sampleFormat )); + PA_LOGAPI(("\tPaTime inputParameters->suggestedLatency: %f\n", inputParameters->suggestedLatency )); + PA_LOGAPI(("\tvoid *inputParameters->hostApiSpecificStreamInfo: 0x%p\n", inputParameters->hostApiSpecificStreamInfo )); + } + + if( outputParameters == NULL ){ + PA_LOGAPI(("\tPaStreamParameters *outputParameters: NULL\n" )); + }else{ + PA_LOGAPI(("\tPaStreamParameters *outputParameters: 0x%p\n", outputParameters )); + PA_LOGAPI(("\tPaDeviceIndex outputParameters->device: %d\n", outputParameters->device )); + PA_LOGAPI(("\tint outputParameters->channelCount: %d\n", outputParameters->channelCount )); + PA_LOGAPI(("\tPaSampleFormat outputParameters->sampleFormat: %d\n", outputParameters->sampleFormat )); + PA_LOGAPI(("\tPaTime outputParameters->suggestedLatency: %f\n", outputParameters->suggestedLatency )); + PA_LOGAPI(("\tvoid *outputParameters->hostApiSpecificStreamInfo: 0x%p\n", outputParameters->hostApiSpecificStreamInfo )); + } + + PA_LOGAPI(("\tdouble sampleRate: %g\n", sampleRate )); + PA_LOGAPI(("\tunsigned long framesPerBuffer: %d\n", framesPerBuffer )); + PA_LOGAPI(("\tPaStreamFlags streamFlags: 0x%x\n", streamFlags )); + PA_LOGAPI(("\tPaStreamCallback *streamCallback: 0x%p\n", streamCallback )); + PA_LOGAPI(("\tvoid *userData: 0x%p\n", userData )); +#endif + + if( !PA_IS_INITIALISED_ ) + { + result = paNotInitialized; + + PA_LOGAPI(("Pa_OpenStream returned:\n" )); + PA_LOGAPI(("\t*(PaStream** stream): undefined\n" )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + return result; + } + + /* Check for parameter errors. + NOTE: make sure this validation list is kept synchronised with the one + in pa_hostapi.h + */ + + if( stream == NULL ) + { + result = paBadStreamPtr; + + PA_LOGAPI(("Pa_OpenStream returned:\n" )); + PA_LOGAPI(("\t*(PaStream** stream): undefined\n" )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + return result; + } + + result = ValidateOpenStreamParameters( inputParameters, + outputParameters, + sampleRate, framesPerBuffer, + streamFlags, streamCallback, + &hostApi, + &hostApiInputDevice, + &hostApiOutputDevice ); + if( result != paNoError ) + { + PA_LOGAPI(("Pa_OpenStream returned:\n" )); + PA_LOGAPI(("\t*(PaStream** stream): undefined\n" )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + return result; + } + + + if( inputParameters ) + { + hostApiInputParameters.device = hostApiInputDevice; + hostApiInputParameters.channelCount = inputParameters->channelCount; + hostApiInputParameters.sampleFormat = inputParameters->sampleFormat; + hostApiInputParameters.suggestedLatency = inputParameters->suggestedLatency; + hostApiInputParameters.hostApiSpecificStreamInfo = inputParameters->hostApiSpecificStreamInfo; + hostApiInputParametersPtr = &hostApiInputParameters; + } + else + { + hostApiInputParametersPtr = NULL; + } + + if( outputParameters ) + { + hostApiOutputParameters.device = hostApiOutputDevice; + hostApiOutputParameters.channelCount = outputParameters->channelCount; + hostApiOutputParameters.sampleFormat = outputParameters->sampleFormat; + hostApiOutputParameters.suggestedLatency = outputParameters->suggestedLatency; + hostApiOutputParameters.hostApiSpecificStreamInfo = outputParameters->hostApiSpecificStreamInfo; + hostApiOutputParametersPtr = &hostApiOutputParameters; + } + else + { + hostApiOutputParametersPtr = NULL; + } + + result = hostApi->OpenStream( hostApi, stream, + hostApiInputParametersPtr, hostApiOutputParametersPtr, + sampleRate, framesPerBuffer, streamFlags, streamCallback, userData ); + + if( result == paNoError ) + AddOpenStream( *stream ); + + + PA_LOGAPI(("Pa_OpenStream returned:\n" )); + PA_LOGAPI(("\t*(PaStream** stream): 0x%p\n", *stream )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + + return result; +} + + +PaError Pa_OpenDefaultStream( PaStream** stream, + int inputChannelCount, + int outputChannelCount, + PaSampleFormat sampleFormat, + double sampleRate, + unsigned long framesPerBuffer, + PaStreamCallback *streamCallback, + void *userData ) +{ + PaError result; + PaStreamParameters hostApiInputParameters, hostApiOutputParameters; + PaStreamParameters *hostApiInputParametersPtr, *hostApiOutputParametersPtr; + + PA_LOGAPI_ENTER_PARAMS( "Pa_OpenDefaultStream" ); + PA_LOGAPI(("\tPaStream** stream: 0x%p\n", stream )); + PA_LOGAPI(("\tint inputChannelCount: %d\n", inputChannelCount )); + PA_LOGAPI(("\tint outputChannelCount: %d\n", outputChannelCount )); + PA_LOGAPI(("\tPaSampleFormat sampleFormat: %d\n", sampleFormat )); + PA_LOGAPI(("\tdouble sampleRate: %g\n", sampleRate )); + PA_LOGAPI(("\tunsigned long framesPerBuffer: %d\n", framesPerBuffer )); + PA_LOGAPI(("\tPaStreamCallback *streamCallback: 0x%p\n", streamCallback )); + PA_LOGAPI(("\tvoid *userData: 0x%p\n", userData )); + + + if( inputChannelCount > 0 ) + { + hostApiInputParameters.device = Pa_GetDefaultInputDevice(); + if( hostApiInputParameters.device == paNoDevice ) + return paDeviceUnavailable; + + hostApiInputParameters.channelCount = inputChannelCount; + hostApiInputParameters.sampleFormat = sampleFormat; + /* defaultHighInputLatency is used below instead of + defaultLowInputLatency because it is more important for the default + stream to work reliably than it is for it to work with the lowest + latency. + */ + hostApiInputParameters.suggestedLatency = + Pa_GetDeviceInfo( hostApiInputParameters.device )->defaultHighInputLatency; + hostApiInputParameters.hostApiSpecificStreamInfo = NULL; + hostApiInputParametersPtr = &hostApiInputParameters; + } + else + { + hostApiInputParametersPtr = NULL; + } + + if( outputChannelCount > 0 ) + { + hostApiOutputParameters.device = Pa_GetDefaultOutputDevice(); + if( hostApiOutputParameters.device == paNoDevice ) + return paDeviceUnavailable; + + hostApiOutputParameters.channelCount = outputChannelCount; + hostApiOutputParameters.sampleFormat = sampleFormat; + /* defaultHighOutputLatency is used below instead of + defaultLowOutputLatency because it is more important for the default + stream to work reliably than it is for it to work with the lowest + latency. + */ + hostApiOutputParameters.suggestedLatency = + Pa_GetDeviceInfo( hostApiOutputParameters.device )->defaultHighOutputLatency; + hostApiOutputParameters.hostApiSpecificStreamInfo = NULL; + hostApiOutputParametersPtr = &hostApiOutputParameters; + } + else + { + hostApiOutputParametersPtr = NULL; + } + + + result = Pa_OpenStream( + stream, hostApiInputParametersPtr, hostApiOutputParametersPtr, + sampleRate, framesPerBuffer, paNoFlag, streamCallback, userData ); + + PA_LOGAPI(("Pa_OpenDefaultStream returned:\n" )); + PA_LOGAPI(("\t*(PaStream** stream): 0x%p", *stream )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + + return result; +} + + +PaError PaUtil_ValidateStreamPointer( PaStream* stream ) +{ + if( !PA_IS_INITIALISED_ ) return paNotInitialized; + + if( stream == NULL ) return paBadStreamPtr; + + if( ((PaUtilStreamRepresentation*)stream)->magic != PA_STREAM_MAGIC ) + return paBadStreamPtr; + + return paNoError; +} + + +PaError Pa_CloseStream( PaStream* stream ) +{ + PaUtilStreamInterface *interface; + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_CloseStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + /* always remove the open stream from our list, even if this function + eventually returns an error. Otherwise CloseOpenStreams() will + get stuck in an infinite loop */ + RemoveOpenStream( stream ); /* be sure to call this _before_ closing the stream */ + + if( result == paNoError ) + { + interface = PA_STREAM_INTERFACE(stream); + + /* abort the stream if it isn't stopped */ + result = interface->IsStopped( stream ); + if( result == 1 ) + result = paNoError; + else if( result == 0 ) + result = interface->Abort( stream ); + + if( result == paNoError ) /** @todo REVIEW: shouldn't we close anyway? see: http://www.portaudio.com/trac/ticket/115 */ + result = interface->Close( stream ); + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_CloseStream", result ); + + return result; +} + + +PaError Pa_SetStreamFinishedCallback( PaStream *stream, PaStreamFinishedCallback* streamFinishedCallback ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_SetStreamFinishedCallback" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + PA_LOGAPI(("\tPaStreamFinishedCallback* streamFinishedCallback: 0x%p\n", streamFinishedCallback )); + + if( result == paNoError ) + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = paStreamIsNotStopped ; + } + if( result == 1 ) + { + PA_STREAM_REP( stream )->streamFinishedCallback = streamFinishedCallback; + result = paNoError; + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_SetStreamFinishedCallback", result ); + + return result; + +} + + +PaError Pa_StartStream( PaStream *stream ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_StartStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = paStreamIsNotStopped ; + } + else if( result == 1 ) + { + result = PA_STREAM_INTERFACE(stream)->Start( stream ); + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_StartStream", result ); + + return result; +} + + +PaError Pa_StopStream( PaStream *stream ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_StopStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = PA_STREAM_INTERFACE(stream)->Stop( stream ); + } + else if( result == 1 ) + { + result = paStreamIsStopped; + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_StopStream", result ); + + return result; +} + + +PaError Pa_AbortStream( PaStream *stream ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_AbortStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = PA_STREAM_INTERFACE(stream)->Abort( stream ); + } + else if( result == 1 ) + { + result = paStreamIsStopped; + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_AbortStream", result ); + + return result; +} + + +PaError Pa_IsStreamStopped( PaStream *stream ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_IsStreamStopped" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + + PA_LOGAPI_EXIT_PAERROR( "Pa_IsStreamStopped", result ); + + return result; +} + + +PaError Pa_IsStreamActive( PaStream *stream ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_IsStreamActive" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + result = PA_STREAM_INTERFACE(stream)->IsActive( stream ); + + + PA_LOGAPI_EXIT_PAERROR( "Pa_IsStreamActive", result ); + + return result; +} + + +const PaStreamInfo* Pa_GetStreamInfo( PaStream *stream ) +{ + PaError error = PaUtil_ValidateStreamPointer( stream ); + const PaStreamInfo *result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetStreamInfo" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( error != paNoError ) + { + result = 0; + + PA_LOGAPI(("Pa_GetStreamInfo returned:\n" )); + PA_LOGAPI(("\tconst PaStreamInfo*: 0 [PaError error:%d ( %s )]\n", error, Pa_GetErrorText( error ) )); + + } + else + { + result = &PA_STREAM_REP( stream )->streamInfo; + + PA_LOGAPI(("Pa_GetStreamInfo returned:\n" )); + PA_LOGAPI(("\tconst PaStreamInfo*: 0x%p:\n", result )); + PA_LOGAPI(("\t{" )); + + PA_LOGAPI(("\t\tint structVersion: %d\n", result->structVersion )); + PA_LOGAPI(("\t\tPaTime inputLatency: %f\n", result->inputLatency )); + PA_LOGAPI(("\t\tPaTime outputLatency: %f\n", result->outputLatency )); + PA_LOGAPI(("\t\tdouble sampleRate: %f\n", result->sampleRate )); + PA_LOGAPI(("\t}\n" )); + + } + + return result; +} + + +PaTime Pa_GetStreamTime( PaStream *stream ) +{ + PaError error = PaUtil_ValidateStreamPointer( stream ); + PaTime result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetStreamTime" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( error != paNoError ) + { + result = 0; + + PA_LOGAPI(("Pa_GetStreamTime returned:\n" )); + PA_LOGAPI(("\tPaTime: 0 [PaError error:%d ( %s )]\n", result, error, Pa_GetErrorText( error ) )); + + } + else + { + result = PA_STREAM_INTERFACE(stream)->GetTime( stream ); + + PA_LOGAPI(("Pa_GetStreamTime returned:\n" )); + PA_LOGAPI(("\tPaTime: %g\n", result )); + + } + + return result; +} + + +double Pa_GetStreamCpuLoad( PaStream* stream ) +{ + PaError error = PaUtil_ValidateStreamPointer( stream ); + double result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetStreamCpuLoad" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( error != paNoError ) + { + + result = 0.0; + + PA_LOGAPI(("Pa_GetStreamCpuLoad returned:\n" )); + PA_LOGAPI(("\tdouble: 0.0 [PaError error: %d ( %s )]\n", error, Pa_GetErrorText( error ) )); + + } + else + { + result = PA_STREAM_INTERFACE(stream)->GetCpuLoad( stream ); + + PA_LOGAPI(("Pa_GetStreamCpuLoad returned:\n" )); + PA_LOGAPI(("\tdouble: %g\n", result )); + + } + + return result; +} + + +PaError Pa_ReadStream( PaStream* stream, + void *buffer, + unsigned long frames ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_ReadStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + { + if( frames == 0 ) + { + /* @todo Should we not allow the implementation to signal any overflow condition? see: http://www.portaudio.com/trac/ticket/116*/ + result = paNoError; + } + else if( buffer == 0 ) + { + result = paBadBufferPtr; + } + else + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = PA_STREAM_INTERFACE(stream)->Read( stream, buffer, frames ); + } + else if( result == 1 ) + { + result = paStreamIsStopped; + } + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_ReadStream", result ); + + return result; +} + + +PaError Pa_WriteStream( PaStream* stream, + const void *buffer, + unsigned long frames ) +{ + PaError result = PaUtil_ValidateStreamPointer( stream ); + + PA_LOGAPI_ENTER_PARAMS( "Pa_WriteStream" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( result == paNoError ) + { + if( frames == 0 ) + { + /* @todo Should we not allow the implementation to signal any underflow condition? see: http://www.portaudio.com/trac/ticket/116*/ + result = paNoError; + } + else if( buffer == 0 ) + { + result = paBadBufferPtr; + } + else + { + result = PA_STREAM_INTERFACE(stream)->IsStopped( stream ); + if( result == 0 ) + { + result = PA_STREAM_INTERFACE(stream)->Write( stream, buffer, frames ); + } + else if( result == 1 ) + { + result = paStreamIsStopped; + } + } + } + + PA_LOGAPI_EXIT_PAERROR( "Pa_WriteStream", result ); + + return result; +} + +signed long Pa_GetStreamReadAvailable( PaStream* stream ) +{ + PaError error = PaUtil_ValidateStreamPointer( stream ); + signed long result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetStreamReadAvailable" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( error != paNoError ) + { + result = 0; + + PA_LOGAPI(("Pa_GetStreamReadAvailable returned:\n" )); + PA_LOGAPI(("\tunsigned long: 0 [ PaError error: %d ( %s ) ]\n", error, Pa_GetErrorText( error ) )); + + } + else + { + result = PA_STREAM_INTERFACE(stream)->GetReadAvailable( stream ); + + PA_LOGAPI(("Pa_GetStreamReadAvailable returned:\n" )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + + } + + return result; +} + + +signed long Pa_GetStreamWriteAvailable( PaStream* stream ) +{ + PaError error = PaUtil_ValidateStreamPointer( stream ); + signed long result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetStreamWriteAvailable" ); + PA_LOGAPI(("\tPaStream* stream: 0x%p\n", stream )); + + if( error != paNoError ) + { + result = 0; + + PA_LOGAPI(("Pa_GetStreamWriteAvailable returned:\n" )); + PA_LOGAPI(("\tunsigned long: 0 [ PaError error: %d ( %s ) ]\n", error, Pa_GetErrorText( error ) )); + + } + else + { + result = PA_STREAM_INTERFACE(stream)->GetWriteAvailable( stream ); + + PA_LOGAPI(("Pa_GetStreamWriteAvailable returned:\n" )); + PA_LOGAPI(("\tPaError: %d ( %s )\n", result, Pa_GetErrorText( result ) )); + + } + + return result; +} + + +PaError Pa_GetSampleSize( PaSampleFormat format ) +{ + int result; + + PA_LOGAPI_ENTER_PARAMS( "Pa_GetSampleSize" ); + PA_LOGAPI(("\tPaSampleFormat format: %d\n", format )); + + switch( format & ~paNonInterleaved ) + { + + case paUInt8: + case paInt8: + result = 1; + break; + + case paInt16: + result = 2; + break; + + case paInt24: + result = 3; + break; + + case paFloat32: + case paInt32: + result = 4; + break; + + default: + result = paSampleFormatNotSupported; + break; + } + + PA_LOGAPI_EXIT_PAERROR_OR_T_RESULT( "Pa_GetSampleSize", "int: %d", result ); + + return (PaError) result; +} diff --git a/portaudio/src/common/pa_gitrevision.h b/portaudio/src/common/pa_gitrevision.h new file mode 100644 index 0000000..b5a042c --- /dev/null +++ b/portaudio/src/common/pa_gitrevision.h @@ -0,0 +1 @@ +#define PA_GIT_REVISION 147dd722548358763a8b649b3e4b41dfffbcfbb6 diff --git a/portaudio/src/common/pa_hostapi.h b/portaudio/src/common/pa_hostapi.h new file mode 100644 index 0000000..4ac3ab6 --- /dev/null +++ b/portaudio/src/common/pa_hostapi.h @@ -0,0 +1,362 @@ +#ifndef PA_HOSTAPI_H +#define PA_HOSTAPI_H +/* + * $Id$ + * Portable Audio I/O Library + * host api representation + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2008 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Interfaces and representation structures used by pa_front.c + to manage and communicate with host API implementations. +*/ + +#include "portaudio.h" + +/** +The PA_NO_* host API macros are now deprecated in favor of PA_USE_* macros. +PA_USE_* indicates whether a particular host API will be initialized by PortAudio. +An undefined or 0 value indicates that the host API will not be used. A value of 1 +indicates that the host API will be used. PA_USE_* macros should be left undefined +or defined to either 0 or 1. + +The code below ensures that PA_USE_* macros are always defined and have value +0 or 1. Undefined symbols are defaulted to 0. Symbols that are neither 0 nor 1 +are defaulted to 1. +*/ + +#ifndef PA_USE_SKELETON +#define PA_USE_SKELETON 0 +#elif (PA_USE_SKELETON != 0) && (PA_USE_SKELETON != 1) +#undef PA_USE_SKELETON +#define PA_USE_SKELETON 1 +#endif + +#if defined(PA_NO_ASIO) || defined(PA_NO_DS) || defined(PA_NO_WMME) || defined(PA_NO_WASAPI) || defined(PA_NO_WDMKS) +#error "Portaudio: PA_NO_<APINAME> is no longer supported, please remove definition and use PA_USE_<APINAME> instead" +#endif + +#ifndef PA_USE_ASIO +#define PA_USE_ASIO 0 +#elif (PA_USE_ASIO != 0) && (PA_USE_ASIO != 1) +#undef PA_USE_ASIO +#define PA_USE_ASIO 1 +#endif + +#ifndef PA_USE_DS +#define PA_USE_DS 0 +#elif (PA_USE_DS != 0) && (PA_USE_DS != 1) +#undef PA_USE_DS +#define PA_USE_DS 1 +#endif + +#ifndef PA_USE_WMME +#define PA_USE_WMME 0 +#elif (PA_USE_WMME != 0) && (PA_USE_WMME != 1) +#undef PA_USE_WMME +#define PA_USE_WMME 1 +#endif + +#ifndef PA_USE_WASAPI +#define PA_USE_WASAPI 0 +#elif (PA_USE_WASAPI != 0) && (PA_USE_WASAPI != 1) +#undef PA_USE_WASAPI +#define PA_USE_WASAPI 1 +#endif + +#ifndef PA_USE_WDMKS +#define PA_USE_WDMKS 0 +#elif (PA_USE_WDMKS != 0) && (PA_USE_WDMKS != 1) +#undef PA_USE_WDMKS +#define PA_USE_WDMKS 1 +#endif + +/* Set default values for Unix based APIs. */ +#if defined(PA_NO_OSS) || defined(PA_NO_ALSA) || defined(PA_NO_JACK) || defined(PA_NO_COREAUDIO) || defined(PA_NO_SGI) || defined(PA_NO_ASIHPI) +#error "Portaudio: PA_NO_<APINAME> is no longer supported, please remove definition and use PA_USE_<APINAME> instead" +#endif + +#ifndef PA_USE_OSS +#define PA_USE_OSS 0 +#elif (PA_USE_OSS != 0) && (PA_USE_OSS != 1) +#undef PA_USE_OSS +#define PA_USE_OSS 1 +#endif + +#ifndef PA_USE_ALSA +#define PA_USE_ALSA 0 +#elif (PA_USE_ALSA != 0) && (PA_USE_ALSA != 1) +#undef PA_USE_ALSA +#define PA_USE_ALSA 1 +#endif + +#ifndef PA_USE_JACK +#define PA_USE_JACK 0 +#elif (PA_USE_JACK != 0) && (PA_USE_JACK != 1) +#undef PA_USE_JACK +#define PA_USE_JACK 1 +#endif + +#ifndef PA_USE_SGI +#define PA_USE_SGI 0 +#elif (PA_USE_SGI != 0) && (PA_USE_SGI != 1) +#undef PA_USE_SGI +#define PA_USE_SGI 1 +#endif + +#ifndef PA_USE_COREAUDIO +#define PA_USE_COREAUDIO 0 +#elif (PA_USE_COREAUDIO != 0) && (PA_USE_COREAUDIO != 1) +#undef PA_USE_COREAUDIO +#define PA_USE_COREAUDIO 1 +#endif + +#ifndef PA_USE_ASIHPI +#define PA_USE_ASIHPI 0 +#elif (PA_USE_ASIHPI != 0) && (PA_USE_ASIHPI != 1) +#undef PA_USE_ASIHPI +#define PA_USE_ASIHPI 1 +#endif + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +/** **FOR THE USE OF pa_front.c ONLY** + Do NOT use fields in this structure, they my change at any time. + Use functions defined in pa_util.h if you think you need functionality + which can be derived from here. +*/ +typedef struct PaUtilPrivatePaFrontHostApiInfo { + + + unsigned long baseDeviceIndex; +}PaUtilPrivatePaFrontHostApiInfo; + + +/** The common header for all data structures whose pointers are passed through + the hostApiSpecificStreamInfo field of the PaStreamParameters structure. + Note that in order to keep the public PortAudio interface clean, this structure + is not used explicitly when declaring hostApiSpecificStreamInfo data structures. + However, some code in pa_front depends on the first 3 members being equivalent + with this structure. + @see PaStreamParameters +*/ +typedef struct PaUtilHostApiSpecificStreamInfoHeader +{ + unsigned long size; /**< size of whole structure including this header */ + PaHostApiTypeId hostApiType; /**< host API for which this data is intended */ + unsigned long version; /**< structure version */ +} PaUtilHostApiSpecificStreamInfoHeader; + + + +/** A structure representing the interface to a host API. Contains both + concrete data and pointers to functions which implement the interface. +*/ +typedef struct PaUtilHostApiRepresentation { + PaUtilPrivatePaFrontHostApiInfo privatePaFrontInfo; + + /** The host api implementation should populate the info field. In the + case of info.defaultInputDevice and info.defaultOutputDevice the + values stored should be 0 based indices within the host api's own + device index range (0 to deviceCount). These values will be converted + to global device indices by pa_front after PaUtilHostApiInitializer() + returns. + */ + PaHostApiInfo info; + + PaDeviceInfo** deviceInfos; + + /** + (*Terminate)() is guaranteed to be called with a valid <hostApi> + parameter, which was previously returned from the same implementation's + initializer. + */ + void (*Terminate)( struct PaUtilHostApiRepresentation *hostApi ); + + /** + The inputParameters and outputParameters pointers should not be saved + as they will not remain valid after OpenStream is called. + + + The following guarantees are made about parameters to (*OpenStream)(): + + [NOTE: the following list up to *END PA FRONT VALIDATIONS* should be + kept in sync with the one for ValidateOpenStreamParameters and + Pa_OpenStream in pa_front.c] + + PaHostApiRepresentation *hostApi + - is valid for this implementation + + PaStream** stream + - is non-null + + - at least one of inputParameters & outputParmeters is valid (not NULL) + + - if inputParameters & outputParmeters are both valid, that + inputParameters->device & outputParmeters->device both use the same host api + + PaDeviceIndex inputParameters->device + - is within range (0 to Pa_CountDevices-1) Or: + - is paUseHostApiSpecificDeviceSpecification and + inputParameters->hostApiSpecificStreamInfo is non-NULL and refers + to a valid host api + + int inputParameters->numChannels + - if inputParameters->device is not paUseHostApiSpecificDeviceSpecification, numInputChannels is > 0 + - upper bound is NOT validated against device capabilities + + PaSampleFormat inputParameters->sampleFormat + - is one of the sample formats defined in portaudio.h + + void *inputParameters->hostApiSpecificStreamInfo + - if supplied its hostApi field matches the input device's host Api + + PaDeviceIndex outputParmeters->device + - is within range (0 to Pa_CountDevices-1) + + int outputParmeters->numChannels + - if inputDevice is valid, numInputChannels is > 0 + - upper bound is NOT validated against device capabilities + + PaSampleFormat outputParmeters->sampleFormat + - is one of the sample formats defined in portaudio.h + + void *outputParmeters->hostApiSpecificStreamInfo + - if supplied its hostApi field matches the output device's host Api + + double sampleRate + - is not an 'absurd' rate (less than 1000. or greater than 384000.) + - sampleRate is NOT validated against device capabilities + + PaStreamFlags streamFlags + - unused platform neutral flags are zero + - paNeverDropInput is only used for full-duplex callback streams + with variable buffer size (paFramesPerBufferUnspecified) + + [*END PA FRONT VALIDATIONS*] + + + The following validations MUST be performed by (*OpenStream)(): + + - check that input device can support numInputChannels + + - check that input device can support inputSampleFormat, or that + we have the capability to convert from outputSampleFormat to + a native format + + - if inputStreamInfo is supplied, validate its contents, + or return an error if no inputStreamInfo is expected + + - check that output device can support numOutputChannels + + - check that output device can support outputSampleFormat, or that + we have the capability to convert from outputSampleFormat to + a native format + + - if outputStreamInfo is supplied, validate its contents, + or return an error if no outputStreamInfo is expected + + - if a full duplex stream is requested, check that the combination + of input and output parameters is supported + + - check that the device supports sampleRate + + - alter sampleRate to a close allowable rate if necessary + + - validate inputLatency and outputLatency + + - validate any platform specific flags, if flags are supplied they + must be valid. + */ + PaError (*OpenStream)( struct PaUtilHostApiRepresentation *hostApi, + PaStream** stream, + const PaStreamParameters *inputParameters, + const PaStreamParameters *outputParameters, + double sampleRate, + unsigned long framesPerCallback, + PaStreamFlags streamFlags, + PaStreamCallback *streamCallback, + void *userData ); + + + PaError (*IsFormatSupported)( struct PaUtilHostApiRepresentation *hostApi, + const PaStreamParameters *inputParameters, + const PaStreamParameters *outputParameters, + double sampleRate ); +} PaUtilHostApiRepresentation; + + +/** Prototype for the initialization function which must be implemented by every + host API. + + This function should only return an error other than paNoError if it encounters + an unexpected and fatal error (memory allocation error for example). In general, + there may be conditions under which it returns a NULL interface pointer and also + returns paNoError. For example, if the ASIO implementation detects that ASIO is + not installed, it should return a NULL interface, and paNoError. + + @see paHostApiInitializers +*/ +typedef PaError PaUtilHostApiInitializer( PaUtilHostApiRepresentation**, PaHostApiIndex ); + + +/** paHostApiInitializers is a NULL-terminated array of host API initialization + functions. These functions are called by pa_front.c to initialize the host APIs + when the client calls Pa_Initialize(). + + The initialization functions are invoked in order. + + The first successfully initialized host API that has a default input *or* output + device is used as the default PortAudio host API. This is based on the logic that + there is only one default host API, and it must contain the default input and output + devices (if defined). + + There is a platform specific file that defines paHostApiInitializers for that + platform, pa_win/pa_win_hostapis.c contains the Win32 definitions for example. +*/ +extern PaUtilHostApiInitializer *paHostApiInitializers[]; + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_HOSTAPI_H */ diff --git a/portaudio/src/common/pa_memorybarrier.h b/portaudio/src/common/pa_memorybarrier.h new file mode 100644 index 0000000..0dca6aa --- /dev/null +++ b/portaudio/src/common/pa_memorybarrier.h @@ -0,0 +1,128 @@ +/* + * $Id: pa_memorybarrier.h 1240 2007-07-17 13:05:07Z bjornroche $ + * Portable Audio I/O Library + * Memory barrier utilities + * + * Author: Bjorn Roche, XO Audio, LLC + * + * This program uses the PortAudio Portable Audio Library. + * For more information see: http://www.portaudio.com + * Copyright (c) 1999-2000 Ross Bencina and Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** + @file pa_memorybarrier.h + @ingroup common_src +*/ + +/**************** + * Some memory barrier primitives based on the system. + * right now only OS X, FreeBSD, and Linux are supported. In addition to providing + * memory barriers, these functions should ensure that data cached in registers + * is written out to cache where it can be snooped by other CPUs. (ie, the volatile + * keyword should not be required) + * + * the primitives that must be defined are: + * + * PaUtil_FullMemoryBarrier() + * PaUtil_ReadMemoryBarrier() + * PaUtil_WriteMemoryBarrier() + * + ****************/ + +#if defined(__APPLE__) +# include <libkern/OSAtomic.h> + /* Here are the memory barrier functions. Mac OS X only provides + full memory barriers, so the three types of barriers are the same, + however, these barriers are superior to compiler-based ones. */ +# define PaUtil_FullMemoryBarrier() OSMemoryBarrier() +# define PaUtil_ReadMemoryBarrier() OSMemoryBarrier() +# define PaUtil_WriteMemoryBarrier() OSMemoryBarrier() +#elif defined(__GNUC__) + /* GCC >= 4.1 has built-in intrinsics. We'll use those */ +# if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) +# define PaUtil_FullMemoryBarrier() __sync_synchronize() +# define PaUtil_ReadMemoryBarrier() __sync_synchronize() +# define PaUtil_WriteMemoryBarrier() __sync_synchronize() + /* as a fallback, GCC understands volatile asm and "memory" to mean it + * should not reorder memory read/writes */ + /* Note that it is not clear that any compiler actually defines __PPC__, + * it can probably removed safely. */ +# elif defined( __ppc__ ) || defined( __powerpc__) || defined( __PPC__ ) +# define PaUtil_FullMemoryBarrier() asm volatile("sync":::"memory") +# define PaUtil_ReadMemoryBarrier() asm volatile("sync":::"memory") +# define PaUtil_WriteMemoryBarrier() asm volatile("sync":::"memory") +# elif defined( __i386__ ) || defined( __i486__ ) || defined( __i586__ ) || \ + defined( __i686__ ) || defined( __x86_64__ ) +# define PaUtil_FullMemoryBarrier() asm volatile("mfence":::"memory") +# define PaUtil_ReadMemoryBarrier() asm volatile("lfence":::"memory") +# define PaUtil_WriteMemoryBarrier() asm volatile("sfence":::"memory") +# else +# ifdef ALLOW_SMP_DANGERS +# warning Memory barriers not defined on this system or system unknown +# warning For SMP safety, you should fix this. +# define PaUtil_FullMemoryBarrier() +# define PaUtil_ReadMemoryBarrier() +# define PaUtil_WriteMemoryBarrier() +# else +# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed. +# endif +# endif +#elif (_MSC_VER >= 1400) && !defined(_WIN32_WCE) +# include <intrin.h> +# pragma intrinsic(_ReadWriteBarrier) +# pragma intrinsic(_ReadBarrier) +# pragma intrinsic(_WriteBarrier) +/* note that MSVC intrinsics _ReadWriteBarrier(), _ReadBarrier(), _WriteBarrier() are just compiler barriers *not* memory barriers */ +# define PaUtil_FullMemoryBarrier() _ReadWriteBarrier() +# define PaUtil_ReadMemoryBarrier() _ReadBarrier() +# define PaUtil_WriteMemoryBarrier() _WriteBarrier() +#elif defined(_WIN32_WCE) +# define PaUtil_FullMemoryBarrier() +# define PaUtil_ReadMemoryBarrier() +# define PaUtil_WriteMemoryBarrier() +#elif defined(_MSC_VER) || defined(__BORLANDC__) +# define PaUtil_FullMemoryBarrier() _asm { lock add [esp], 0 } +# define PaUtil_ReadMemoryBarrier() _asm { lock add [esp], 0 } +# define PaUtil_WriteMemoryBarrier() _asm { lock add [esp], 0 } +#else +# ifdef ALLOW_SMP_DANGERS +# warning Memory barriers not defined on this system or system unknown +# warning For SMP safety, you should fix this. +# define PaUtil_FullMemoryBarrier() +# define PaUtil_ReadMemoryBarrier() +# define PaUtil_WriteMemoryBarrier() +# else +# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed. +# endif +#endif diff --git a/portaudio/src/common/pa_process.c b/portaudio/src/common/pa_process.c new file mode 100644 index 0000000..084cabb --- /dev/null +++ b/portaudio/src/common/pa_process.c @@ -0,0 +1,1831 @@ +/* + * $Id$ + * Portable Audio I/O Library + * streamCallback <-> host buffer processing adapter + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Buffer Processor implementation. +*/ + + +#include <assert.h> +#include <string.h> /* memset() */ + +#include "pa_process.h" +#include "pa_util.h" + + +#define PA_FRAMES_PER_TEMP_BUFFER_WHEN_HOST_BUFFER_SIZE_IS_UNKNOWN_ 1024 + +#define PA_MIN_( a, b ) ( ((a)<(b)) ? (a) : (b) ) + + +/* greatest common divisor - PGCD in French */ +static unsigned long GCD( unsigned long a, unsigned long b ) +{ + return (b==0) ? a : GCD( b, a%b); +} + +/* least common multiple - PPCM in French */ +static unsigned long LCM( unsigned long a, unsigned long b ) +{ + return (a*b) / GCD(a,b); +} + +#define PA_MAX_( a, b ) (((a) > (b)) ? (a) : (b)) + +static unsigned long CalculateFrameShift( unsigned long M, unsigned long N ) +{ + unsigned long result = 0; + unsigned long i; + unsigned long lcm; + + assert( M > 0 ); + assert( N > 0 ); + + lcm = LCM( M, N ); + for( i = M; i < lcm; i += M ) + result = PA_MAX_( result, i % N ); + + return result; +} + + +PaError PaUtil_InitializeBufferProcessor( PaUtilBufferProcessor* bp, + int inputChannelCount, PaSampleFormat userInputSampleFormat, + PaSampleFormat hostInputSampleFormat, + int outputChannelCount, PaSampleFormat userOutputSampleFormat, + PaSampleFormat hostOutputSampleFormat, + double sampleRate, + PaStreamFlags streamFlags, + unsigned long framesPerUserBuffer, + unsigned long framesPerHostBuffer, + PaUtilHostBufferSizeMode hostBufferSizeMode, + PaStreamCallback *streamCallback, void *userData ) +{ + PaError result = paNoError; + PaError bytesPerSample; + unsigned long tempInputBufferSize, tempOutputBufferSize; + PaStreamFlags tempInputStreamFlags; + + if( streamFlags & paNeverDropInput ) + { + /* paNeverDropInput is only valid for full-duplex callback streams, with an unspecified number of frames per buffer. */ + if( !streamCallback || !(inputChannelCount > 0 && outputChannelCount > 0) || + framesPerUserBuffer != paFramesPerBufferUnspecified ) + return paInvalidFlag; + } + + /* initialize buffer ptrs to zero so they can be freed if necessary in error */ + bp->tempInputBuffer = 0; + bp->tempInputBufferPtrs = 0; + bp->tempOutputBuffer = 0; + bp->tempOutputBufferPtrs = 0; + + bp->framesPerUserBuffer = framesPerUserBuffer; + bp->framesPerHostBuffer = framesPerHostBuffer; + + bp->inputChannelCount = inputChannelCount; + bp->outputChannelCount = outputChannelCount; + + bp->hostBufferSizeMode = hostBufferSizeMode; + + bp->hostInputChannels[0] = bp->hostInputChannels[1] = 0; + bp->hostOutputChannels[0] = bp->hostOutputChannels[1] = 0; + + if( framesPerUserBuffer == 0 ) /* streamCallback will accept any buffer size */ + { + bp->useNonAdaptingProcess = 1; + bp->initialFramesInTempInputBuffer = 0; + bp->initialFramesInTempOutputBuffer = 0; + + if( hostBufferSizeMode == paUtilFixedHostBufferSize + || hostBufferSizeMode == paUtilBoundedHostBufferSize ) + { + bp->framesPerTempBuffer = framesPerHostBuffer; + } + else /* unknown host buffer size */ + { + bp->framesPerTempBuffer = PA_FRAMES_PER_TEMP_BUFFER_WHEN_HOST_BUFFER_SIZE_IS_UNKNOWN_; + } + } + else + { + bp->framesPerTempBuffer = framesPerUserBuffer; + + if( hostBufferSizeMode == paUtilFixedHostBufferSize + && framesPerHostBuffer % framesPerUserBuffer == 0 ) + { + bp->useNonAdaptingProcess = 1; + bp->initialFramesInTempInputBuffer = 0; + bp->initialFramesInTempOutputBuffer = 0; + } + else + { + bp->useNonAdaptingProcess = 0; + + if( inputChannelCount > 0 && outputChannelCount > 0 ) + { + /* full duplex */ + if( hostBufferSizeMode == paUtilFixedHostBufferSize ) + { + unsigned long frameShift = + CalculateFrameShift( framesPerHostBuffer, framesPerUserBuffer ); + + if( framesPerUserBuffer > framesPerHostBuffer ) + { + bp->initialFramesInTempInputBuffer = frameShift; + bp->initialFramesInTempOutputBuffer = 0; + } + else + { + bp->initialFramesInTempInputBuffer = 0; + bp->initialFramesInTempOutputBuffer = frameShift; + } + } + else /* variable host buffer size, add framesPerUserBuffer latency */ + { + bp->initialFramesInTempInputBuffer = 0; + bp->initialFramesInTempOutputBuffer = framesPerUserBuffer; + } + } + else + { + /* half duplex */ + bp->initialFramesInTempInputBuffer = 0; + bp->initialFramesInTempOutputBuffer = 0; + } + } + } + + + bp->framesInTempInputBuffer = bp->initialFramesInTempInputBuffer; + bp->framesInTempOutputBuffer = bp->initialFramesInTempOutputBuffer; + + + if( inputChannelCount > 0 ) + { + bytesPerSample = Pa_GetSampleSize( hostInputSampleFormat ); + if( bytesPerSample > 0 ) + { + bp->bytesPerHostInputSample = bytesPerSample; + } + else + { + result = bytesPerSample; + goto error; + } + + bytesPerSample = Pa_GetSampleSize( userInputSampleFormat ); + if( bytesPerSample > 0 ) + { + bp->bytesPerUserInputSample = bytesPerSample; + } + else + { + result = bytesPerSample; + goto error; + } + + /* Under the assumption that no ADC in existence delivers better than 24bits resolution, + we disable dithering when host input format is paInt32 and user format is paInt24, + since the host samples will just be padded with zeros anyway. */ + + tempInputStreamFlags = streamFlags; + if( !(tempInputStreamFlags & paDitherOff) /* dither is on */ + && (hostInputSampleFormat & paInt32) /* host input format is int32 */ + && (userInputSampleFormat & paInt24) /* user requested format is int24 */ ){ + + tempInputStreamFlags = tempInputStreamFlags | paDitherOff; + } + + bp->inputConverter = + PaUtil_SelectConverter( hostInputSampleFormat, userInputSampleFormat, tempInputStreamFlags ); + + bp->inputZeroer = PaUtil_SelectZeroer( userInputSampleFormat ); + + bp->userInputIsInterleaved = (userInputSampleFormat & paNonInterleaved)?0:1; + + bp->hostInputIsInterleaved = (hostInputSampleFormat & paNonInterleaved)?0:1; + + bp->userInputSampleFormatIsEqualToHost = ((userInputSampleFormat & ~paNonInterleaved) == (hostInputSampleFormat & ~paNonInterleaved)); + + tempInputBufferSize = + bp->framesPerTempBuffer * bp->bytesPerUserInputSample * inputChannelCount; + + bp->tempInputBuffer = PaUtil_AllocateMemory( tempInputBufferSize ); + if( bp->tempInputBuffer == 0 ) + { + result = paInsufficientMemory; + goto error; + } + + if( bp->framesInTempInputBuffer > 0 ) + memset( bp->tempInputBuffer, 0, tempInputBufferSize ); + + if( userInputSampleFormat & paNonInterleaved ) + { + bp->tempInputBufferPtrs = + (void **)PaUtil_AllocateMemory( sizeof(void*)*inputChannelCount ); + if( bp->tempInputBufferPtrs == 0 ) + { + result = paInsufficientMemory; + goto error; + } + } + + bp->hostInputChannels[0] = (PaUtilChannelDescriptor*) + PaUtil_AllocateMemory( sizeof(PaUtilChannelDescriptor) * inputChannelCount * 2); + if( bp->hostInputChannels[0] == 0 ) + { + result = paInsufficientMemory; + goto error; + } + + bp->hostInputChannels[1] = &bp->hostInputChannels[0][inputChannelCount]; + } + + if( outputChannelCount > 0 ) + { + bytesPerSample = Pa_GetSampleSize( hostOutputSampleFormat ); + if( bytesPerSample > 0 ) + { + bp->bytesPerHostOutputSample = bytesPerSample; + } + else + { + result = bytesPerSample; + goto error; + } + + bytesPerSample = Pa_GetSampleSize( userOutputSampleFormat ); + if( bytesPerSample > 0 ) + { + bp->bytesPerUserOutputSample = bytesPerSample; + } + else + { + result = bytesPerSample; + goto error; + } + + bp->outputConverter = + PaUtil_SelectConverter( userOutputSampleFormat, hostOutputSampleFormat, streamFlags ); + + bp->outputZeroer = PaUtil_SelectZeroer( hostOutputSampleFormat ); + + bp->userOutputIsInterleaved = (userOutputSampleFormat & paNonInterleaved)?0:1; + + bp->hostOutputIsInterleaved = (hostOutputSampleFormat & paNonInterleaved)?0:1; + + bp->userOutputSampleFormatIsEqualToHost = ((userOutputSampleFormat & ~paNonInterleaved) == (hostOutputSampleFormat & ~paNonInterleaved)); + + tempOutputBufferSize = + bp->framesPerTempBuffer * bp->bytesPerUserOutputSample * outputChannelCount; + + bp->tempOutputBuffer = PaUtil_AllocateMemory( tempOutputBufferSize ); + if( bp->tempOutputBuffer == 0 ) + { + result = paInsufficientMemory; + goto error; + } + + if( bp->framesInTempOutputBuffer > 0 ) + memset( bp->tempOutputBuffer, 0, tempOutputBufferSize ); + + if( userOutputSampleFormat & paNonInterleaved ) + { + bp->tempOutputBufferPtrs = + (void **)PaUtil_AllocateMemory( sizeof(void*)*outputChannelCount ); + if( bp->tempOutputBufferPtrs == 0 ) + { + result = paInsufficientMemory; + goto error; + } + } + + bp->hostOutputChannels[0] = (PaUtilChannelDescriptor*) + PaUtil_AllocateMemory( sizeof(PaUtilChannelDescriptor)*outputChannelCount * 2 ); + if( bp->hostOutputChannels[0] == 0 ) + { + result = paInsufficientMemory; + goto error; + } + + bp->hostOutputChannels[1] = &bp->hostOutputChannels[0][outputChannelCount]; + } + + PaUtil_InitializeTriangularDitherState( &bp->ditherGenerator ); + + bp->samplePeriod = 1. / sampleRate; + + bp->streamCallback = streamCallback; + bp->userData = userData; + + return result; + +error: + if( bp->tempInputBuffer ) + PaUtil_FreeMemory( bp->tempInputBuffer ); + + if( bp->tempInputBufferPtrs ) + PaUtil_FreeMemory( bp->tempInputBufferPtrs ); + + if( bp->hostInputChannels[0] ) + PaUtil_FreeMemory( bp->hostInputChannels[0] ); + + if( bp->tempOutputBuffer ) + PaUtil_FreeMemory( bp->tempOutputBuffer ); + + if( bp->tempOutputBufferPtrs ) + PaUtil_FreeMemory( bp->tempOutputBufferPtrs ); + + if( bp->hostOutputChannels[0] ) + PaUtil_FreeMemory( bp->hostOutputChannels[0] ); + + return result; +} + + +void PaUtil_TerminateBufferProcessor( PaUtilBufferProcessor* bp ) +{ + if( bp->tempInputBuffer ) + PaUtil_FreeMemory( bp->tempInputBuffer ); + + if( bp->tempInputBufferPtrs ) + PaUtil_FreeMemory( bp->tempInputBufferPtrs ); + + if( bp->hostInputChannels[0] ) + PaUtil_FreeMemory( bp->hostInputChannels[0] ); + + if( bp->tempOutputBuffer ) + PaUtil_FreeMemory( bp->tempOutputBuffer ); + + if( bp->tempOutputBufferPtrs ) + PaUtil_FreeMemory( bp->tempOutputBufferPtrs ); + + if( bp->hostOutputChannels[0] ) + PaUtil_FreeMemory( bp->hostOutputChannels[0] ); +} + + +void PaUtil_ResetBufferProcessor( PaUtilBufferProcessor* bp ) +{ + unsigned long tempInputBufferSize, tempOutputBufferSize; + + bp->framesInTempInputBuffer = bp->initialFramesInTempInputBuffer; + bp->framesInTempOutputBuffer = bp->initialFramesInTempOutputBuffer; + + if( bp->framesInTempInputBuffer > 0 ) + { + tempInputBufferSize = + bp->framesPerTempBuffer * bp->bytesPerUserInputSample * bp->inputChannelCount; + memset( bp->tempInputBuffer, 0, tempInputBufferSize ); + } + + if( bp->framesInTempOutputBuffer > 0 ) + { + tempOutputBufferSize = + bp->framesPerTempBuffer * bp->bytesPerUserOutputSample * bp->outputChannelCount; + memset( bp->tempOutputBuffer, 0, tempOutputBufferSize ); + } +} + + +unsigned long PaUtil_GetBufferProcessorInputLatencyFrames( PaUtilBufferProcessor* bp ) +{ + return bp->initialFramesInTempInputBuffer; +} + + +unsigned long PaUtil_GetBufferProcessorOutputLatencyFrames( PaUtilBufferProcessor* bp ) +{ + return bp->initialFramesInTempOutputBuffer; +} + + +void PaUtil_SetInputFrameCount( PaUtilBufferProcessor* bp, + unsigned long frameCount ) +{ + if( frameCount == 0 ) + bp->hostInputFrameCount[0] = bp->framesPerHostBuffer; + else + bp->hostInputFrameCount[0] = frameCount; +} + + +void PaUtil_SetNoInput( PaUtilBufferProcessor* bp ) +{ + assert( bp->inputChannelCount > 0 ); + + bp->hostInputChannels[0][0].data = 0; +} + + +void PaUtil_SetInputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data, unsigned int stride ) +{ + assert( channel < bp->inputChannelCount ); + + bp->hostInputChannels[0][channel].data = data; + bp->hostInputChannels[0][channel].stride = stride; +} + + +void PaUtil_SetInterleavedInputChannels( PaUtilBufferProcessor* bp, + unsigned int firstChannel, void *data, unsigned int channelCount ) +{ + unsigned int i; + unsigned int channel = firstChannel; + unsigned char *p = (unsigned char*)data; + + if( channelCount == 0 ) + channelCount = bp->inputChannelCount; + + assert( firstChannel < bp->inputChannelCount ); + assert( firstChannel + channelCount <= bp->inputChannelCount ); + assert( bp->hostInputIsInterleaved ); + + for( i=0; i< channelCount; ++i ) + { + bp->hostInputChannels[0][channel+i].data = p; + p += bp->bytesPerHostInputSample; + bp->hostInputChannels[0][channel+i].stride = channelCount; + } +} + + +void PaUtil_SetNonInterleavedInputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data ) +{ + assert( channel < bp->inputChannelCount ); + assert( !bp->hostInputIsInterleaved ); + + bp->hostInputChannels[0][channel].data = data; + bp->hostInputChannels[0][channel].stride = 1; +} + + +void PaUtil_Set2ndInputFrameCount( PaUtilBufferProcessor* bp, + unsigned long frameCount ) +{ + bp->hostInputFrameCount[1] = frameCount; +} + + +void PaUtil_Set2ndInputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data, unsigned int stride ) +{ + assert( channel < bp->inputChannelCount ); + + bp->hostInputChannels[1][channel].data = data; + bp->hostInputChannels[1][channel].stride = stride; +} + + +void PaUtil_Set2ndInterleavedInputChannels( PaUtilBufferProcessor* bp, + unsigned int firstChannel, void *data, unsigned int channelCount ) +{ + unsigned int i; + unsigned int channel = firstChannel; + unsigned char *p = (unsigned char*)data; + + if( channelCount == 0 ) + channelCount = bp->inputChannelCount; + + assert( firstChannel < bp->inputChannelCount ); + assert( firstChannel + channelCount <= bp->inputChannelCount ); + assert( bp->hostInputIsInterleaved ); + + for( i=0; i< channelCount; ++i ) + { + bp->hostInputChannels[1][channel+i].data = p; + p += bp->bytesPerHostInputSample; + bp->hostInputChannels[1][channel+i].stride = channelCount; + } +} + + +void PaUtil_Set2ndNonInterleavedInputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data ) +{ + assert( channel < bp->inputChannelCount ); + assert( !bp->hostInputIsInterleaved ); + + bp->hostInputChannels[1][channel].data = data; + bp->hostInputChannels[1][channel].stride = 1; +} + + +void PaUtil_SetOutputFrameCount( PaUtilBufferProcessor* bp, + unsigned long frameCount ) +{ + if( frameCount == 0 ) + bp->hostOutputFrameCount[0] = bp->framesPerHostBuffer; + else + bp->hostOutputFrameCount[0] = frameCount; +} + + +void PaUtil_SetNoOutput( PaUtilBufferProcessor* bp ) +{ + assert( bp->outputChannelCount > 0 ); + + bp->hostOutputChannels[0][0].data = 0; + + /* note that only NonAdaptingProcess is able to deal with no output at this stage. not implemented for AdaptingProcess */ +} + + +void PaUtil_SetOutputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data, unsigned int stride ) +{ + assert( channel < bp->outputChannelCount ); + assert( data != NULL ); + + bp->hostOutputChannels[0][channel].data = data; + bp->hostOutputChannels[0][channel].stride = stride; +} + + +void PaUtil_SetInterleavedOutputChannels( PaUtilBufferProcessor* bp, + unsigned int firstChannel, void *data, unsigned int channelCount ) +{ + unsigned int i; + unsigned int channel = firstChannel; + unsigned char *p = (unsigned char*)data; + + if( channelCount == 0 ) + channelCount = bp->outputChannelCount; + + assert( firstChannel < bp->outputChannelCount ); + assert( firstChannel + channelCount <= bp->outputChannelCount ); + assert( bp->hostOutputIsInterleaved ); + + for( i=0; i< channelCount; ++i ) + { + PaUtil_SetOutputChannel( bp, channel + i, p, channelCount ); + p += bp->bytesPerHostOutputSample; + } +} + + +void PaUtil_SetNonInterleavedOutputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data ) +{ + assert( channel < bp->outputChannelCount ); + assert( !bp->hostOutputIsInterleaved ); + + PaUtil_SetOutputChannel( bp, channel, data, 1 ); +} + + +void PaUtil_Set2ndOutputFrameCount( PaUtilBufferProcessor* bp, + unsigned long frameCount ) +{ + bp->hostOutputFrameCount[1] = frameCount; +} + + +void PaUtil_Set2ndOutputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data, unsigned int stride ) +{ + assert( channel < bp->outputChannelCount ); + assert( data != NULL ); + + bp->hostOutputChannels[1][channel].data = data; + bp->hostOutputChannels[1][channel].stride = stride; +} + + +void PaUtil_Set2ndInterleavedOutputChannels( PaUtilBufferProcessor* bp, + unsigned int firstChannel, void *data, unsigned int channelCount ) +{ + unsigned int i; + unsigned int channel = firstChannel; + unsigned char *p = (unsigned char*)data; + + if( channelCount == 0 ) + channelCount = bp->outputChannelCount; + + assert( firstChannel < bp->outputChannelCount ); + assert( firstChannel + channelCount <= bp->outputChannelCount ); + assert( bp->hostOutputIsInterleaved ); + + for( i=0; i< channelCount; ++i ) + { + PaUtil_Set2ndOutputChannel( bp, channel + i, p, channelCount ); + p += bp->bytesPerHostOutputSample; + } +} + + +void PaUtil_Set2ndNonInterleavedOutputChannel( PaUtilBufferProcessor* bp, + unsigned int channel, void *data ) +{ + assert( channel < bp->outputChannelCount ); + assert( !bp->hostOutputIsInterleaved ); + + PaUtil_Set2ndOutputChannel( bp, channel, data, 1 ); +} + + +void PaUtil_BeginBufferProcessing( PaUtilBufferProcessor* bp, + PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags callbackStatusFlags ) +{ + bp->timeInfo = timeInfo; + + /* the first streamCallback will be called to process samples which are + currently in the input buffer before the ones starting at the timeInfo time */ + + bp->timeInfo->inputBufferAdcTime -= bp->framesInTempInputBuffer * bp->samplePeriod; + + /* We just pass through timeInfo->currentTime provided by the caller. This is + not strictly conformant to the word of the spec, since the buffer processor + might call the callback multiple times, and we never refresh currentTime. */ + + /* the first streamCallback will be called to generate samples which will be + outputted after the frames currently in the output buffer have been + outputted. */ + bp->timeInfo->outputBufferDacTime += bp->framesInTempOutputBuffer * bp->samplePeriod; + + bp->callbackStatusFlags = callbackStatusFlags; + + bp->hostInputFrameCount[1] = 0; + bp->hostOutputFrameCount[1] = 0; +} + + +/* + NonAdaptingProcess() is a simple buffer copying adaptor that can handle + both full and half duplex copies. It processes framesToProcess frames, + broken into blocks bp->framesPerTempBuffer long. + This routine can be used when the streamCallback doesn't care what length + the buffers are, or when framesToProcess is an integer multiple of + bp->framesPerTempBuffer, in which case streamCallback will always be called + with bp->framesPerTempBuffer samples. +*/ +static unsigned long NonAdaptingProcess( PaUtilBufferProcessor *bp, + int *streamCallbackResult, + PaUtilChannelDescriptor *hostInputChannels, + PaUtilChannelDescriptor *hostOutputChannels, + unsigned long framesToProcess ) +{ + void *userInput, *userOutput; + unsigned char *srcBytePtr, *destBytePtr; + unsigned int srcSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int srcChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int destSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int destChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + unsigned long frameCount; + unsigned long framesToGo = framesToProcess; + unsigned long framesProcessed = 0; + int skipOutputConvert = 0; + int skipInputConvert = 0; + + + if( *streamCallbackResult == paContinue ) + { + do + { + frameCount = PA_MIN_( bp->framesPerTempBuffer, framesToGo ); + + /* configure user input buffer and convert input data (host -> user) */ + if( bp->inputChannelCount == 0 ) + { + /* no input */ + userInput = 0; + } + else /* there are input channels */ + { + + destBytePtr = (unsigned char *)bp->tempInputBuffer; + + if( bp->userInputIsInterleaved ) + { + destSampleStrideSamples = bp->inputChannelCount; + destChannelStrideBytes = bp->bytesPerUserInputSample; + + /* process host buffer directly, or use temp buffer if formats differ or host buffer non-interleaved, + * or if num channels differs between the host (set in stride) and the user (eg with some Alsa hw:) */ + if( bp->userInputSampleFormatIsEqualToHost && bp->hostInputIsInterleaved + && bp->hostInputChannels[0][0].data && bp->inputChannelCount == hostInputChannels[0].stride ) + { + userInput = hostInputChannels[0].data; + destBytePtr = (unsigned char *)hostInputChannels[0].data; + skipInputConvert = 1; + } + else + { + userInput = bp->tempInputBuffer; + } + } + else /* user input is not interleaved */ + { + destSampleStrideSamples = 1; + destChannelStrideBytes = frameCount * bp->bytesPerUserInputSample; + + /* setup non-interleaved ptrs */ + if( bp->userInputSampleFormatIsEqualToHost && !bp->hostInputIsInterleaved && bp->hostInputChannels[0][0].data ) + { + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->tempInputBufferPtrs[i] = hostInputChannels[i].data; + } + skipInputConvert = 1; + } + else + { + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->tempInputBufferPtrs[i] = ((unsigned char*)bp->tempInputBuffer) + + i * bp->bytesPerUserInputSample * frameCount; + } + } + + userInput = bp->tempInputBufferPtrs; + } + + if( !bp->hostInputChannels[0][0].data ) + { + /* no input was supplied (see PaUtil_SetNoInput), so + zero the input buffer */ + + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->inputZeroer( destBytePtr, destSampleStrideSamples, frameCount ); + destBytePtr += destChannelStrideBytes; /* skip to next destination channel */ + } + } + else + { + if( skipInputConvert ) + { + for( i=0; i<bp->inputChannelCount; ++i ) + { + /* advance src ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + frameCount * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + } + else + { + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->inputConverter( destBytePtr, destSampleStrideSamples, + hostInputChannels[i].data, + hostInputChannels[i].stride, + frameCount, &bp->ditherGenerator ); + + destBytePtr += destChannelStrideBytes; /* skip to next destination channel */ + + /* advance src ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + frameCount * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + } + } + } + + /* configure user output buffer */ + if( bp->outputChannelCount == 0 ) + { + /* no output */ + userOutput = 0; + } + else /* there are output channels */ + { + if( bp->userOutputIsInterleaved ) + { + /* process host buffer directly, or use temp buffer if formats differ or host buffer non-interleaved, + * or if num channels differs between the host (set in stride) and the user (eg with some Alsa hw:) */ + if( bp->userOutputSampleFormatIsEqualToHost && bp->hostOutputIsInterleaved + && bp->outputChannelCount == hostOutputChannels[0].stride ) + { + userOutput = hostOutputChannels[0].data; + skipOutputConvert = 1; + } + else + { + userOutput = bp->tempOutputBuffer; + } + } + else /* user output is not interleaved */ + { + if( bp->userOutputSampleFormatIsEqualToHost && !bp->hostOutputIsInterleaved ) + { + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->tempOutputBufferPtrs[i] = hostOutputChannels[i].data; + } + skipOutputConvert = 1; + } + else + { + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->tempOutputBufferPtrs[i] = ((unsigned char*)bp->tempOutputBuffer) + + i * bp->bytesPerUserOutputSample * frameCount; + } + } + + userOutput = bp->tempOutputBufferPtrs; + } + } + + *streamCallbackResult = bp->streamCallback( userInput, userOutput, + frameCount, bp->timeInfo, bp->callbackStatusFlags, bp->userData ); + + if( *streamCallbackResult == paAbort ) + { + /* callback returned paAbort, don't advance framesProcessed + and framesToGo, they will be handled below */ + } + else + { + bp->timeInfo->inputBufferAdcTime += frameCount * bp->samplePeriod; + bp->timeInfo->outputBufferDacTime += frameCount * bp->samplePeriod; + + /* convert output data (user -> host) */ + + if( bp->outputChannelCount != 0 && bp->hostOutputChannels[0][0].data ) + { + if( skipOutputConvert ) + { + for( i=0; i<bp->outputChannelCount; ++i ) + { + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + } + else + { + + srcBytePtr = (unsigned char *)bp->tempOutputBuffer; + + if( bp->userOutputIsInterleaved ) + { + srcSampleStrideSamples = bp->outputChannelCount; + srcChannelStrideBytes = bp->bytesPerUserOutputSample; + } + else /* user output is not interleaved */ + { + srcSampleStrideSamples = 1; + srcChannelStrideBytes = frameCount * bp->bytesPerUserOutputSample; + } + + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputConverter( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + srcBytePtr, srcSampleStrideSamples, + frameCount, &bp->ditherGenerator ); + + srcBytePtr += srcChannelStrideBytes; /* skip to next source channel */ + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + } + } + + framesProcessed += frameCount; + + framesToGo -= frameCount; + } + } + while( framesToGo > 0 && *streamCallbackResult == paContinue ); + } + + if( framesToGo > 0 ) + { + /* zero any remaining frames output. There will only be remaining frames + if the callback has returned paComplete or paAbort */ + + frameCount = framesToGo; + + if( bp->outputChannelCount != 0 && bp->hostOutputChannels[0][0].data ) + { + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputZeroer( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + frameCount ); + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + } + + framesProcessed += frameCount; + } + + return framesProcessed; +} + + +/* + AdaptingInputOnlyProcess() is a half duplex input buffer processor. It + converts data from the input buffers into the temporary input buffer, + when the temporary input buffer is full, it calls the streamCallback. +*/ +static unsigned long AdaptingInputOnlyProcess( PaUtilBufferProcessor *bp, + int *streamCallbackResult, + PaUtilChannelDescriptor *hostInputChannels, + unsigned long framesToProcess ) +{ + void *userInput, *userOutput; + unsigned char *destBytePtr; + unsigned int destSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int destChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + unsigned long frameCount; + unsigned long framesToGo = framesToProcess; + unsigned long framesProcessed = 0; + + userOutput = 0; + + do + { + frameCount = ( bp->framesInTempInputBuffer + framesToGo > bp->framesPerUserBuffer ) + ? ( bp->framesPerUserBuffer - bp->framesInTempInputBuffer ) + : framesToGo; + + /* convert frameCount samples into temp buffer */ + + if( bp->userInputIsInterleaved ) + { + destBytePtr = ((unsigned char*)bp->tempInputBuffer) + + bp->bytesPerUserInputSample * bp->inputChannelCount * + bp->framesInTempInputBuffer; + + destSampleStrideSamples = bp->inputChannelCount; + destChannelStrideBytes = bp->bytesPerUserInputSample; + + userInput = bp->tempInputBuffer; + } + else /* user input is not interleaved */ + { + destBytePtr = ((unsigned char*)bp->tempInputBuffer) + + bp->bytesPerUserInputSample * bp->framesInTempInputBuffer; + + destSampleStrideSamples = 1; + destChannelStrideBytes = bp->framesPerUserBuffer * bp->bytesPerUserInputSample; + + /* setup non-interleaved ptrs */ + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->tempInputBufferPtrs[i] = ((unsigned char*)bp->tempInputBuffer) + + i * bp->bytesPerUserInputSample * bp->framesPerUserBuffer; + } + + userInput = bp->tempInputBufferPtrs; + } + + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->inputConverter( destBytePtr, destSampleStrideSamples, + hostInputChannels[i].data, + hostInputChannels[i].stride, + frameCount, &bp->ditherGenerator ); + + destBytePtr += destChannelStrideBytes; /* skip to next destination channel */ + + /* advance src ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + frameCount * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + + bp->framesInTempInputBuffer += frameCount; + + if( bp->framesInTempInputBuffer == bp->framesPerUserBuffer ) + { + /** + @todo (non-critical optimisation) + The conditional below implements the continue/complete/abort mechanism + simply by continuing on iterating through the input buffer, but not + passing the data to the callback. With care, the outer loop could be + terminated earlier, thus some unneeded conversion cycles would be + saved. + */ + if( *streamCallbackResult == paContinue ) + { + bp->timeInfo->outputBufferDacTime = 0; + + *streamCallbackResult = bp->streamCallback( userInput, userOutput, + bp->framesPerUserBuffer, bp->timeInfo, + bp->callbackStatusFlags, bp->userData ); + + bp->timeInfo->inputBufferAdcTime += bp->framesPerUserBuffer * bp->samplePeriod; + } + + bp->framesInTempInputBuffer = 0; + } + + framesProcessed += frameCount; + + framesToGo -= frameCount; + }while( framesToGo > 0 ); + + return framesProcessed; +} + + +/* + AdaptingOutputOnlyProcess() is a half duplex output buffer processor. + It converts data from the temporary output buffer, to the output buffers, + when the temporary output buffer is empty, it calls the streamCallback. +*/ +static unsigned long AdaptingOutputOnlyProcess( PaUtilBufferProcessor *bp, + int *streamCallbackResult, + PaUtilChannelDescriptor *hostOutputChannels, + unsigned long framesToProcess ) +{ + void *userInput, *userOutput; + unsigned char *srcBytePtr; + unsigned int srcSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int srcChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + unsigned long frameCount; + unsigned long framesToGo = framesToProcess; + unsigned long framesProcessed = 0; + + do + { + if( bp->framesInTempOutputBuffer == 0 && *streamCallbackResult == paContinue ) + { + userInput = 0; + + /* setup userOutput */ + if( bp->userOutputIsInterleaved ) + { + userOutput = bp->tempOutputBuffer; + } + else /* user output is not interleaved */ + { + for( i = 0; i < bp->outputChannelCount; ++i ) + { + bp->tempOutputBufferPtrs[i] = ((unsigned char*)bp->tempOutputBuffer) + + i * bp->framesPerUserBuffer * bp->bytesPerUserOutputSample; + } + + userOutput = bp->tempOutputBufferPtrs; + } + + bp->timeInfo->inputBufferAdcTime = 0; + + *streamCallbackResult = bp->streamCallback( userInput, userOutput, + bp->framesPerUserBuffer, bp->timeInfo, + bp->callbackStatusFlags, bp->userData ); + + if( *streamCallbackResult == paAbort ) + { + /* if the callback returned paAbort, we disregard its output */ + } + else + { + bp->timeInfo->outputBufferDacTime += bp->framesPerUserBuffer * bp->samplePeriod; + + bp->framesInTempOutputBuffer = bp->framesPerUserBuffer; + } + } + + if( bp->framesInTempOutputBuffer > 0 ) + { + /* convert frameCount frames from user buffer to host buffer */ + + frameCount = PA_MIN_( bp->framesInTempOutputBuffer, framesToGo ); + + if( bp->userOutputIsInterleaved ) + { + srcBytePtr = ((unsigned char*)bp->tempOutputBuffer) + + bp->bytesPerUserOutputSample * bp->outputChannelCount * + (bp->framesPerUserBuffer - bp->framesInTempOutputBuffer); + + srcSampleStrideSamples = bp->outputChannelCount; + srcChannelStrideBytes = bp->bytesPerUserOutputSample; + } + else /* user output is not interleaved */ + { + srcBytePtr = ((unsigned char*)bp->tempOutputBuffer) + + bp->bytesPerUserOutputSample * + (bp->framesPerUserBuffer - bp->framesInTempOutputBuffer); + + srcSampleStrideSamples = 1; + srcChannelStrideBytes = bp->framesPerUserBuffer * bp->bytesPerUserOutputSample; + } + + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputConverter( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + srcBytePtr, srcSampleStrideSamples, + frameCount, &bp->ditherGenerator ); + + srcBytePtr += srcChannelStrideBytes; /* skip to next source channel */ + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + + bp->framesInTempOutputBuffer -= frameCount; + } + else + { + /* no more user data is available because the callback has returned + paComplete or paAbort. Fill the remainder of the host buffer + with zeros. + */ + + frameCount = framesToGo; + + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputZeroer( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + frameCount ); + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + } + + framesProcessed += frameCount; + + framesToGo -= frameCount; + + }while( framesToGo > 0 ); + + return framesProcessed; +} + +/* CopyTempOutputBuffersToHostOutputBuffers is called from AdaptingProcess to copy frames from + tempOutputBuffer to hostOutputChannels. This includes data conversion + and interleaving. +*/ +static void CopyTempOutputBuffersToHostOutputBuffers( PaUtilBufferProcessor *bp) +{ + unsigned long maxFramesToCopy; + PaUtilChannelDescriptor *hostOutputChannels; + unsigned int frameCount; + unsigned char *srcBytePtr; + unsigned int srcSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int srcChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + + /* copy frames from user to host output buffers */ + while( bp->framesInTempOutputBuffer > 0 && + ((bp->hostOutputFrameCount[0] + bp->hostOutputFrameCount[1]) > 0) ) + { + maxFramesToCopy = bp->framesInTempOutputBuffer; + + /* select the output buffer set (1st or 2nd) */ + if( bp->hostOutputFrameCount[0] > 0 ) + { + hostOutputChannels = bp->hostOutputChannels[0]; + frameCount = PA_MIN_( bp->hostOutputFrameCount[0], maxFramesToCopy ); + } + else + { + hostOutputChannels = bp->hostOutputChannels[1]; + frameCount = PA_MIN_( bp->hostOutputFrameCount[1], maxFramesToCopy ); + } + + if( bp->userOutputIsInterleaved ) + { + srcBytePtr = ((unsigned char*)bp->tempOutputBuffer) + + bp->bytesPerUserOutputSample * bp->outputChannelCount * + (bp->framesPerUserBuffer - bp->framesInTempOutputBuffer); + + srcSampleStrideSamples = bp->outputChannelCount; + srcChannelStrideBytes = bp->bytesPerUserOutputSample; + } + else /* user output is not interleaved */ + { + srcBytePtr = ((unsigned char*)bp->tempOutputBuffer) + + bp->bytesPerUserOutputSample * + (bp->framesPerUserBuffer - bp->framesInTempOutputBuffer); + + srcSampleStrideSamples = 1; + srcChannelStrideBytes = bp->framesPerUserBuffer * bp->bytesPerUserOutputSample; + } + + for( i=0; i<bp->outputChannelCount; ++i ) + { + assert( hostOutputChannels[i].data != NULL ); + bp->outputConverter( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + srcBytePtr, srcSampleStrideSamples, + frameCount, &bp->ditherGenerator ); + + srcBytePtr += srcChannelStrideBytes; /* skip to next source channel */ + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + frameCount * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + + if( bp->hostOutputFrameCount[0] > 0 ) + bp->hostOutputFrameCount[0] -= frameCount; + else + bp->hostOutputFrameCount[1] -= frameCount; + + bp->framesInTempOutputBuffer -= frameCount; + } +} + +/* + AdaptingProcess is a full duplex adapting buffer processor. It converts + data from the temporary output buffer into the host output buffers, then + from the host input buffers into the temporary input buffers. Calling the + streamCallback when necessary. + When processPartialUserBuffers is 0, all available input data will be + consumed and all available output space will be filled. When + processPartialUserBuffers is non-zero, as many full user buffers + as possible will be processed, but partial buffers will not be consumed. +*/ +static unsigned long AdaptingProcess( PaUtilBufferProcessor *bp, + int *streamCallbackResult, int processPartialUserBuffers ) +{ + void *userInput, *userOutput; + unsigned long framesProcessed = 0; + unsigned long framesAvailable; + unsigned long endProcessingMinFrameCount; + unsigned long maxFramesToCopy; + PaUtilChannelDescriptor *hostInputChannels, *hostOutputChannels; + unsigned int frameCount; + unsigned char *destBytePtr; + unsigned int destSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int destChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i, j; + + + framesAvailable = bp->hostInputFrameCount[0] + bp->hostInputFrameCount[1];/* this is assumed to be the same as the output buffer's frame count */ + + if( processPartialUserBuffers ) + endProcessingMinFrameCount = 0; + else + endProcessingMinFrameCount = (bp->framesPerUserBuffer - 1); + + /* Fill host output with remaining frames in user output (tempOutputBuffer) */ + CopyTempOutputBuffersToHostOutputBuffers( bp ); + + while( framesAvailable > endProcessingMinFrameCount ) + { + + if( bp->framesInTempOutputBuffer == 0 && *streamCallbackResult != paContinue ) + { + /* the callback will not be called any more, so zero what remains + of the host output buffers */ + + for( i=0; i<2; ++i ) + { + frameCount = bp->hostOutputFrameCount[i]; + if( frameCount > 0 ) + { + hostOutputChannels = bp->hostOutputChannels[i]; + + for( j=0; j<bp->outputChannelCount; ++j ) + { + bp->outputZeroer( hostOutputChannels[j].data, + hostOutputChannels[j].stride, + frameCount ); + + /* advance dest ptr for next iteration */ + hostOutputChannels[j].data = ((unsigned char*)hostOutputChannels[j].data) + + frameCount * hostOutputChannels[j].stride * bp->bytesPerHostOutputSample; + } + bp->hostOutputFrameCount[i] = 0; + } + } + } + + + /* copy frames from host to user input buffers */ + while( bp->framesInTempInputBuffer < bp->framesPerUserBuffer && + ((bp->hostInputFrameCount[0] + bp->hostInputFrameCount[1]) > 0) ) + { + maxFramesToCopy = bp->framesPerUserBuffer - bp->framesInTempInputBuffer; + + /* select the input buffer set (1st or 2nd) */ + if( bp->hostInputFrameCount[0] > 0 ) + { + hostInputChannels = bp->hostInputChannels[0]; + frameCount = PA_MIN_( bp->hostInputFrameCount[0], maxFramesToCopy ); + } + else + { + hostInputChannels = bp->hostInputChannels[1]; + frameCount = PA_MIN_( bp->hostInputFrameCount[1], maxFramesToCopy ); + } + + /* configure conversion destination pointers */ + if( bp->userInputIsInterleaved ) + { + destBytePtr = ((unsigned char*)bp->tempInputBuffer) + + bp->bytesPerUserInputSample * bp->inputChannelCount * + bp->framesInTempInputBuffer; + + destSampleStrideSamples = bp->inputChannelCount; + destChannelStrideBytes = bp->bytesPerUserInputSample; + } + else /* user input is not interleaved */ + { + destBytePtr = ((unsigned char*)bp->tempInputBuffer) + + bp->bytesPerUserInputSample * bp->framesInTempInputBuffer; + + destSampleStrideSamples = 1; + destChannelStrideBytes = bp->framesPerUserBuffer * bp->bytesPerUserInputSample; + } + + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->inputConverter( destBytePtr, destSampleStrideSamples, + hostInputChannels[i].data, + hostInputChannels[i].stride, + frameCount, &bp->ditherGenerator ); + + destBytePtr += destChannelStrideBytes; /* skip to next destination channel */ + + /* advance src ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + frameCount * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + + if( bp->hostInputFrameCount[0] > 0 ) + bp->hostInputFrameCount[0] -= frameCount; + else + bp->hostInputFrameCount[1] -= frameCount; + + bp->framesInTempInputBuffer += frameCount; + + /* update framesAvailable and framesProcessed based on input consumed + unless something is very wrong this will also correspond to the + amount of output generated */ + framesAvailable -= frameCount; + framesProcessed += frameCount; + } + + /* call streamCallback */ + if( bp->framesInTempInputBuffer == bp->framesPerUserBuffer && + bp->framesInTempOutputBuffer == 0 ) + { + if( *streamCallbackResult == paContinue ) + { + /* setup userInput */ + if( bp->userInputIsInterleaved ) + { + userInput = bp->tempInputBuffer; + } + else /* user input is not interleaved */ + { + for( i = 0; i < bp->inputChannelCount; ++i ) + { + bp->tempInputBufferPtrs[i] = ((unsigned char*)bp->tempInputBuffer) + + i * bp->framesPerUserBuffer * bp->bytesPerUserInputSample; + } + + userInput = bp->tempInputBufferPtrs; + } + + /* setup userOutput */ + if( bp->userOutputIsInterleaved ) + { + userOutput = bp->tempOutputBuffer; + } + else /* user output is not interleaved */ + { + for( i = 0; i < bp->outputChannelCount; ++i ) + { + bp->tempOutputBufferPtrs[i] = ((unsigned char*)bp->tempOutputBuffer) + + i * bp->framesPerUserBuffer * bp->bytesPerUserOutputSample; + } + + userOutput = bp->tempOutputBufferPtrs; + } + + /* call streamCallback */ + + *streamCallbackResult = bp->streamCallback( userInput, userOutput, + bp->framesPerUserBuffer, bp->timeInfo, + bp->callbackStatusFlags, bp->userData ); + + bp->timeInfo->inputBufferAdcTime += bp->framesPerUserBuffer * bp->samplePeriod; + bp->timeInfo->outputBufferDacTime += bp->framesPerUserBuffer * bp->samplePeriod; + + bp->framesInTempInputBuffer = 0; + + if( *streamCallbackResult == paAbort ) + bp->framesInTempOutputBuffer = 0; + else + bp->framesInTempOutputBuffer = bp->framesPerUserBuffer; + } + else + { + /* paComplete or paAbort has already been called. */ + + bp->framesInTempInputBuffer = 0; + } + } + + /* copy frames from user (tempOutputBuffer) to host output buffers (hostOutputChannels) + Means to process the user output provided by the callback. Has to be called after + each callback. */ + CopyTempOutputBuffersToHostOutputBuffers( bp ); + + } + + return framesProcessed; +} + + +unsigned long PaUtil_EndBufferProcessing( PaUtilBufferProcessor* bp, int *streamCallbackResult ) +{ + unsigned long framesToProcess, framesToGo; + unsigned long framesProcessed = 0; + + if( bp->inputChannelCount != 0 && bp->outputChannelCount != 0 + && bp->hostInputChannels[0][0].data /* input was supplied (see PaUtil_SetNoInput) */ + && bp->hostOutputChannels[0][0].data /* output was supplied (see PaUtil_SetNoOutput) */ ) + { + assert( (bp->hostInputFrameCount[0] + bp->hostInputFrameCount[1]) == + (bp->hostOutputFrameCount[0] + bp->hostOutputFrameCount[1]) ); + } + + assert( *streamCallbackResult == paContinue + || *streamCallbackResult == paComplete + || *streamCallbackResult == paAbort ); /* don't forget to pass in a valid callback result value */ + + if( bp->useNonAdaptingProcess ) + { + if( bp->inputChannelCount != 0 && bp->outputChannelCount != 0 ) + { + /* full duplex non-adapting process, splice buffers if they are + different lengths */ + + framesToGo = bp->hostOutputFrameCount[0] + bp->hostOutputFrameCount[1]; /* relies on assert above for input/output equivalence */ + + do{ + unsigned long noInputInputFrameCount; + unsigned long *hostInputFrameCount; + PaUtilChannelDescriptor *hostInputChannels; + unsigned long noOutputOutputFrameCount; + unsigned long *hostOutputFrameCount; + PaUtilChannelDescriptor *hostOutputChannels; + unsigned long framesProcessedThisIteration; + + if( !bp->hostInputChannels[0][0].data ) + { + /* no input was supplied (see PaUtil_SetNoInput) + NonAdaptingProcess knows how to deal with this + */ + noInputInputFrameCount = framesToGo; + hostInputFrameCount = &noInputInputFrameCount; + hostInputChannels = 0; + } + else if( bp->hostInputFrameCount[0] != 0 ) + { + hostInputFrameCount = &bp->hostInputFrameCount[0]; + hostInputChannels = bp->hostInputChannels[0]; + } + else + { + hostInputFrameCount = &bp->hostInputFrameCount[1]; + hostInputChannels = bp->hostInputChannels[1]; + } + + if( !bp->hostOutputChannels[0][0].data ) + { + /* no output was supplied (see PaUtil_SetNoOutput) + NonAdaptingProcess knows how to deal with this + */ + noOutputOutputFrameCount = framesToGo; + hostOutputFrameCount = &noOutputOutputFrameCount; + hostOutputChannels = 0; + } + if( bp->hostOutputFrameCount[0] != 0 ) + { + hostOutputFrameCount = &bp->hostOutputFrameCount[0]; + hostOutputChannels = bp->hostOutputChannels[0]; + } + else + { + hostOutputFrameCount = &bp->hostOutputFrameCount[1]; + hostOutputChannels = bp->hostOutputChannels[1]; + } + + framesToProcess = PA_MIN_( *hostInputFrameCount, + *hostOutputFrameCount ); + + assert( framesToProcess != 0 ); + + framesProcessedThisIteration = NonAdaptingProcess( bp, streamCallbackResult, + hostInputChannels, hostOutputChannels, + framesToProcess ); + + *hostInputFrameCount -= framesProcessedThisIteration; + *hostOutputFrameCount -= framesProcessedThisIteration; + + framesProcessed += framesProcessedThisIteration; + framesToGo -= framesProcessedThisIteration; + + }while( framesToGo > 0 ); + } + else + { + /* half duplex non-adapting process, just process 1st and 2nd buffer */ + /* process first buffer */ + + framesToProcess = (bp->inputChannelCount != 0) + ? bp->hostInputFrameCount[0] + : bp->hostOutputFrameCount[0]; + + framesProcessed = NonAdaptingProcess( bp, streamCallbackResult, + bp->hostInputChannels[0], bp->hostOutputChannels[0], + framesToProcess ); + + /* process second buffer if provided */ + + framesToProcess = (bp->inputChannelCount != 0) + ? bp->hostInputFrameCount[1] + : bp->hostOutputFrameCount[1]; + if( framesToProcess > 0 ) + { + framesProcessed += NonAdaptingProcess( bp, streamCallbackResult, + bp->hostInputChannels[1], bp->hostOutputChannels[1], + framesToProcess ); + } + } + } + else /* block adaption necessary*/ + { + + if( bp->inputChannelCount != 0 && bp->outputChannelCount != 0 ) + { + /* full duplex */ + + if( bp->hostBufferSizeMode == paUtilVariableHostBufferSizePartialUsageAllowed ) + { + framesProcessed = AdaptingProcess( bp, streamCallbackResult, + 0 /* dont process partial user buffers */ ); + } + else + { + framesProcessed = AdaptingProcess( bp, streamCallbackResult, + 1 /* process partial user buffers */ ); + } + } + else if( bp->inputChannelCount != 0 ) + { + /* input only */ + framesToProcess = bp->hostInputFrameCount[0]; + + framesProcessed = AdaptingInputOnlyProcess( bp, streamCallbackResult, + bp->hostInputChannels[0], framesToProcess ); + + framesToProcess = bp->hostInputFrameCount[1]; + if( framesToProcess > 0 ) + { + framesProcessed += AdaptingInputOnlyProcess( bp, streamCallbackResult, + bp->hostInputChannels[1], framesToProcess ); + } + } + else + { + /* output only */ + framesToProcess = bp->hostOutputFrameCount[0]; + + framesProcessed = AdaptingOutputOnlyProcess( bp, streamCallbackResult, + bp->hostOutputChannels[0], framesToProcess ); + + framesToProcess = bp->hostOutputFrameCount[1]; + if( framesToProcess > 0 ) + { + framesProcessed += AdaptingOutputOnlyProcess( bp, streamCallbackResult, + bp->hostOutputChannels[1], framesToProcess ); + } + } + } + + return framesProcessed; +} + + +int PaUtil_IsBufferProcessorOutputEmpty( PaUtilBufferProcessor* bp ) +{ + return (bp->framesInTempOutputBuffer) ? 0 : 1; +} + + +unsigned long PaUtil_CopyInput( PaUtilBufferProcessor* bp, + void **buffer, unsigned long frameCount ) +{ + PaUtilChannelDescriptor *hostInputChannels; + unsigned int framesToCopy; + unsigned char *destBytePtr; + void **nonInterleavedDestPtrs; + unsigned int destSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int destChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + + hostInputChannels = bp->hostInputChannels[0]; + framesToCopy = PA_MIN_( bp->hostInputFrameCount[0], frameCount ); + + if( bp->userInputIsInterleaved ) + { + destBytePtr = (unsigned char*)*buffer; + + destSampleStrideSamples = bp->inputChannelCount; + destChannelStrideBytes = bp->bytesPerUserInputSample; + + for( i=0; i<bp->inputChannelCount; ++i ) + { + bp->inputConverter( destBytePtr, destSampleStrideSamples, + hostInputChannels[i].data, + hostInputChannels[i].stride, + framesToCopy, &bp->ditherGenerator ); + + destBytePtr += destChannelStrideBytes; /* skip to next dest channel */ + + /* advance source ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + framesToCopy * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + + /* advance callers dest pointer (buffer) */ + *buffer = ((unsigned char *)*buffer) + + framesToCopy * bp->inputChannelCount * bp->bytesPerUserInputSample; + } + else + { + /* user input is not interleaved */ + + nonInterleavedDestPtrs = (void**)*buffer; + + destSampleStrideSamples = 1; + + for( i=0; i<bp->inputChannelCount; ++i ) + { + destBytePtr = (unsigned char*)nonInterleavedDestPtrs[i]; + + bp->inputConverter( destBytePtr, destSampleStrideSamples, + hostInputChannels[i].data, + hostInputChannels[i].stride, + framesToCopy, &bp->ditherGenerator ); + + /* advance callers dest pointer (nonInterleavedDestPtrs[i]) */ + destBytePtr += bp->bytesPerUserInputSample * framesToCopy; + nonInterleavedDestPtrs[i] = destBytePtr; + + /* advance source ptr for next iteration */ + hostInputChannels[i].data = ((unsigned char*)hostInputChannels[i].data) + + framesToCopy * hostInputChannels[i].stride * bp->bytesPerHostInputSample; + } + } + + bp->hostInputFrameCount[0] -= framesToCopy; + + return framesToCopy; +} + +unsigned long PaUtil_CopyOutput( PaUtilBufferProcessor* bp, + const void ** buffer, unsigned long frameCount ) +{ + PaUtilChannelDescriptor *hostOutputChannels; + unsigned int framesToCopy; + unsigned char *srcBytePtr; + void **nonInterleavedSrcPtrs; + unsigned int srcSampleStrideSamples; /* stride from one sample to the next within a channel, in samples */ + unsigned int srcChannelStrideBytes; /* stride from one channel to the next, in bytes */ + unsigned int i; + + hostOutputChannels = bp->hostOutputChannels[0]; + framesToCopy = PA_MIN_( bp->hostOutputFrameCount[0], frameCount ); + + if( bp->userOutputIsInterleaved ) + { + srcBytePtr = (unsigned char*)*buffer; + + srcSampleStrideSamples = bp->outputChannelCount; + srcChannelStrideBytes = bp->bytesPerUserOutputSample; + + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputConverter( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + srcBytePtr, srcSampleStrideSamples, + framesToCopy, &bp->ditherGenerator ); + + srcBytePtr += srcChannelStrideBytes; /* skip to next source channel */ + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + framesToCopy * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + + /* advance callers source pointer (buffer) */ + *buffer = ((unsigned char *)*buffer) + + framesToCopy * bp->outputChannelCount * bp->bytesPerUserOutputSample; + + } + else + { + /* user output is not interleaved */ + + nonInterleavedSrcPtrs = (void**)*buffer; + + srcSampleStrideSamples = 1; + + for( i=0; i<bp->outputChannelCount; ++i ) + { + srcBytePtr = (unsigned char*)nonInterleavedSrcPtrs[i]; + + bp->outputConverter( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + srcBytePtr, srcSampleStrideSamples, + framesToCopy, &bp->ditherGenerator ); + + + /* advance callers source pointer (nonInterleavedSrcPtrs[i]) */ + srcBytePtr += bp->bytesPerUserOutputSample * framesToCopy; + nonInterleavedSrcPtrs[i] = srcBytePtr; + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + framesToCopy * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + } + + bp->hostOutputFrameCount[0] += framesToCopy; + + return framesToCopy; +} + + +unsigned long PaUtil_ZeroOutput( PaUtilBufferProcessor* bp, unsigned long frameCount ) +{ + PaUtilChannelDescriptor *hostOutputChannels; + unsigned int framesToZero; + unsigned int i; + + hostOutputChannels = bp->hostOutputChannels[0]; + framesToZero = PA_MIN_( bp->hostOutputFrameCount[0], frameCount ); + + for( i=0; i<bp->outputChannelCount; ++i ) + { + bp->outputZeroer( hostOutputChannels[i].data, + hostOutputChannels[i].stride, + framesToZero ); + + + /* advance dest ptr for next iteration */ + hostOutputChannels[i].data = ((unsigned char*)hostOutputChannels[i].data) + + framesToZero * hostOutputChannels[i].stride * bp->bytesPerHostOutputSample; + } + + bp->hostOutputFrameCount[0] += framesToZero; + + return framesToZero; +} diff --git a/portaudio/src/common/pa_process.h b/portaudio/src/common/pa_process.h new file mode 100644 index 0000000..444bdf5 --- /dev/null +++ b/portaudio/src/common/pa_process.h @@ -0,0 +1,754 @@ +#ifndef PA_PROCESS_H +#define PA_PROCESS_H +/* + * $Id$ + * Portable Audio I/O Library callback buffer processing adapters + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2002 Phil Burk, Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Buffer Processor prototypes. A Buffer Processor performs buffer length + adaption, coordinates sample format conversion, and interleaves/deinterleaves + channels. + + <h3>Overview</h3> + + The "Buffer Processor" (PaUtilBufferProcessor) manages conversion of audio + data from host buffers to user buffers and back again. Where required, the + buffer processor takes care of converting between host and user sample formats, + interleaving and deinterleaving multichannel buffers, and adapting between host + and user buffers with different lengths. The buffer processor may be used with + full and half duplex streams, for both callback streams and blocking read/write + streams. + + One of the important capabilities provided by the buffer processor is + the ability to adapt between user and host buffer sizes of different lengths + with minimum latency. Although this task is relatively easy to perform when + the host buffer size is an integer multiple of the user buffer size, the + problem is more complicated when this is not the case - especially for + full-duplex callback streams. Where necessary the adaption is implemented by + internally buffering some input and/or output data. The buffer adation + algorithm used by the buffer processor was originally implemented by + Stephan Letz for the ASIO version of PortAudio, and is described in his + Callback_adaption_.pdf which is included in the distribution. + + The buffer processor performs sample conversion using the functions provided + by pa_converters.c. + + The following sections provide an overview of how to use the buffer processor. + Interested readers are advised to consult the host API implementations for + examples of buffer processor usage. + + + <h4>Initialization, resetting and termination</h4> + + When a stream is opened, the buffer processor should be initialized using + PaUtil_InitializeBufferProcessor. This function initializes internal state + and allocates temporary buffers as necessary according to the supplied + configuration parameters. Some of the parameters correspond to those requested + by the user in their call to Pa_OpenStream(), others reflect the requirements + of the host API implementation - they indicate host buffer sizes, formats, + and the type of buffering which the Host API uses. The buffer processor should + be initialized for callback streams and blocking read/write streams. + + Call PaUtil_ResetBufferProcessor to clear any sample data which is present + in the buffer processor before starting to use it (for example when + Pa_StartStream is called). + + When the buffer processor is no longer used call + PaUtil_TerminateBufferProcessor. + + + <h4>Using the buffer processor for a callback stream</h4> + + The buffer processor's role in a callback stream is to take host input buffers + process them with the stream callback, and fill host output buffers. For a + full duplex stream, the buffer processor handles input and output simultaneously + due to the requirements of the minimum-latency buffer adation algorithm. + + When a host buffer becomes available, the implementation should call + the buffer processor to process the buffer. The buffer processor calls the + stream callback to consume and/or produce audio data as necessary. The buffer + processor will convert sample formats, interleave/deinterleave channels, + and slice or chunk the data to the appropriate buffer lengths according to + the requirements of the stream callback and the host API. + + To process a host buffer (or a pair of host buffers for a full-duplex stream) + use the following calling sequence: + + -# Call PaUtil_BeginBufferProcessing + -# For a stream which takes input: + - Call PaUtil_SetInputFrameCount with the number of frames in the host input + buffer. + - Call one of the following functions one or more times to tell the + buffer processor about the host input buffer(s): PaUtil_SetInputChannel, + PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel. + Which function you call will depend on whether the host buffer(s) are + interleaved or not. + - If the available host data is split across two buffers (for example a + data range at the end of a circular buffer and another range at the + beginning of the circular buffer), also call + PaUtil_Set2ndInputFrameCount, PaUtil_Set2ndInputChannel, + PaUtil_Set2ndInterleavedInputChannels, + PaUtil_Set2ndNonInterleavedInputChannel as necessary to tell the buffer + processor about the second buffer. + -# For a stream which generates output: + - Call PaUtil_SetOutputFrameCount with the number of frames in the host + output buffer. + - Call one of the following functions one or more times to tell the + buffer processor about the host output buffer(s): PaUtil_SetOutputChannel, + PaUtil_SetInterleavedOutputChannels, PaUtil_SetNonInterleavedOutputChannel. + Which function you call will depend on whether the host buffer(s) are + interleaved or not. + - If the available host output buffer space is split across two buffers + (for example a data range at the end of a circular buffer and another + range at the beginning of the circular buffer), call + PaUtil_Set2ndOutputFrameCount, PaUtil_Set2ndOutputChannel, + PaUtil_Set2ndInterleavedOutputChannels, + PaUtil_Set2ndNonInterleavedOutputChannel as necessary to tell the buffer + processor about the second buffer. + -# Call PaUtil_EndBufferProcessing, this function performs the actual data + conversion and processing. + + + <h4>Using the buffer processor for a blocking read/write stream</h4> + + Blocking read/write streams use the buffer processor to convert and copy user + output data to a host buffer, and to convert and copy host input data to + the user's buffer. The buffer processor does not perform any buffer adaption. + When using the buffer processor in a blocking read/write stream the input and + output conversion are performed separately by the PaUtil_CopyInput and + PaUtil_CopyOutput functions. + + To copy data from a host input buffer to the buffer(s) which the user supplies + to Pa_ReadStream, use the following calling sequence. + + - Repeat the following three steps until the user buffer(s) have been filled + with samples from the host input buffers: + -# Call PaUtil_SetInputFrameCount with the number of frames in the host + input buffer. + -# Call one of the following functions one or more times to tell the + buffer processor about the host input buffer(s): PaUtil_SetInputChannel, + PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel. + Which function you call will depend on whether the host buffer(s) are + interleaved or not. + -# Call PaUtil_CopyInput with the user buffer pointer (or a copy of the + array of buffer pointers for a non-interleaved stream) passed to + Pa_ReadStream, along with the number of frames in the user buffer(s). + Be careful to pass a <i>copy</i> of the user buffer pointers to + PaUtil_CopyInput because PaUtil_CopyInput advances the pointers to + the start of the next region to copy. + - PaUtil_CopyInput will not copy more data than is available in the + host buffer(s), so the above steps need to be repeated until the user + buffer(s) are full. + + + To copy data to the host output buffer from the user buffers(s) supplied + to Pa_WriteStream use the following calling sequence. + + - Repeat the following three steps until all frames from the user buffer(s) + have been copied to the host API: + -# Call PaUtil_SetOutputFrameCount with the number of frames in the host + output buffer. + -# Call one of the following functions one or more times to tell the + buffer processor about the host output buffer(s): PaUtil_SetOutputChannel, + PaUtil_SetInterleavedOutputChannels, PaUtil_SetNonInterleavedOutputChannel. + Which function you call will depend on whether the host buffer(s) are + interleaved or not. + -# Call PaUtil_CopyOutput with the user buffer pointer (or a copy of the + array of buffer pointers for a non-interleaved stream) passed to + Pa_WriteStream, along with the number of frames in the user buffer(s). + Be careful to pass a <i>copy</i> of the user buffer pointers to + PaUtil_CopyOutput because PaUtil_CopyOutput advances the pointers to + the start of the next region to copy. + - PaUtil_CopyOutput will not copy more data than fits in the host buffer(s), + so the above steps need to be repeated until all user data is copied. +*/ + + +#include "portaudio.h" +#include "pa_converters.h" +#include "pa_dither.h" + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +/** @brief Mode flag passed to PaUtil_InitializeBufferProcessor indicating the type + of buffering that the host API uses. + + The mode used depends on whether the host API or the implementation manages + the buffers, and how these buffers are used (scatter gather, circular buffer). +*/ +typedef enum { +/** The host buffer size is a fixed known size. */ + paUtilFixedHostBufferSize, + +/** The host buffer size may vary, but has a known maximum size. */ + paUtilBoundedHostBufferSize, + +/** Nothing is known about the host buffer size. */ + paUtilUnknownHostBufferSize, + +/** The host buffer size varies, and the client does not require the buffer + processor to consume all of the input and fill all of the output buffer. This + is useful when the implementation has access to the host API's circular buffer + and only needs to consume/fill some of it, not necessarily all of it, with each + call to the buffer processor. This is the only mode where + PaUtil_EndBufferProcessing() may not consume the whole buffer. +*/ + paUtilVariableHostBufferSizePartialUsageAllowed +}PaUtilHostBufferSizeMode; + + +/** @brief An auxiliary data structure used internally by the buffer processor + to represent host input and output buffers. */ +typedef struct PaUtilChannelDescriptor{ + void *data; + unsigned int stride; /**< stride in samples, not bytes */ +}PaUtilChannelDescriptor; + + +/** @brief The main buffer processor data structure. + + Allocate one of these, initialize it with PaUtil_InitializeBufferProcessor + and terminate it with PaUtil_TerminateBufferProcessor. +*/ +typedef struct { + unsigned long framesPerUserBuffer; + unsigned long framesPerHostBuffer; + + PaUtilHostBufferSizeMode hostBufferSizeMode; + int useNonAdaptingProcess; + int userOutputSampleFormatIsEqualToHost; + int userInputSampleFormatIsEqualToHost; + unsigned long framesPerTempBuffer; + + unsigned int inputChannelCount; + unsigned int bytesPerHostInputSample; + unsigned int bytesPerUserInputSample; + int userInputIsInterleaved; + PaUtilConverter *inputConverter; + PaUtilZeroer *inputZeroer; + + unsigned int outputChannelCount; + unsigned int bytesPerHostOutputSample; + unsigned int bytesPerUserOutputSample; + int userOutputIsInterleaved; + PaUtilConverter *outputConverter; + PaUtilZeroer *outputZeroer; + + unsigned long initialFramesInTempInputBuffer; + unsigned long initialFramesInTempOutputBuffer; + + void *tempInputBuffer; /**< used for slips, block adaption, and conversion. */ + void **tempInputBufferPtrs; /**< storage for non-interleaved buffer pointers, NULL for interleaved user input */ + unsigned long framesInTempInputBuffer; /**< frames remaining in input buffer from previous adaption iteration */ + + void *tempOutputBuffer; /**< used for slips, block adaption, and conversion. */ + void **tempOutputBufferPtrs; /**< storage for non-interleaved buffer pointers, NULL for interleaved user output */ + unsigned long framesInTempOutputBuffer; /**< frames remaining in input buffer from previous adaption iteration */ + + PaStreamCallbackTimeInfo *timeInfo; + + PaStreamCallbackFlags callbackStatusFlags; + + int hostInputIsInterleaved; + unsigned long hostInputFrameCount[2]; + PaUtilChannelDescriptor *hostInputChannels[2]; /**< pointers to arrays of channel descriptors. + pointers are NULL for half-duplex output processing. + hostInputChannels[i].data is NULL when the caller + calls PaUtil_SetNoInput() + */ + int hostOutputIsInterleaved; + unsigned long hostOutputFrameCount[2]; + PaUtilChannelDescriptor *hostOutputChannels[2]; /**< pointers to arrays of channel descriptors. + pointers are NULL for half-duplex input processing. + hostOutputChannels[i].data is NULL when the caller + calls PaUtil_SetNoOutput() + */ + + PaUtilTriangularDitherGenerator ditherGenerator; + + double samplePeriod; + + PaStreamCallback *streamCallback; + void *userData; +} PaUtilBufferProcessor; + + +/** @name Initialization, termination, resetting and info */ +/*@{*/ + +/** Initialize a buffer processor's representation stored in a + PaUtilBufferProcessor structure. Be sure to call + PaUtil_TerminateBufferProcessor after finishing with a buffer processor. + + @param bufferProcessor The buffer processor structure to initialize. + + @param inputChannelCount The number of input channels as passed to + Pa_OpenStream or 0 for an output-only stream. + + @param userInputSampleFormat Format of user input samples, as passed to + Pa_OpenStream. This parameter is ignored for ouput-only streams. + + @param hostInputSampleFormat Format of host input samples. This parameter is + ignored for output-only streams. See note about host buffer interleave below. + + @param outputChannelCount The number of output channels as passed to + Pa_OpenStream or 0 for an input-only stream. + + @param userOutputSampleFormat Format of user output samples, as passed to + Pa_OpenStream. This parameter is ignored for input-only streams. + + @param hostOutputSampleFormat Format of host output samples. This parameter is + ignored for input-only streams. See note about host buffer interleave below. + + @param sampleRate Sample rate of the stream. The more accurate this is the + better - it is used for updating time stamps when adapting buffers. + + @param streamFlags Stream flags as passed to Pa_OpenStream, this parameter is + used for selecting special sample conversion options such as clipping and + dithering. + + @param framesPerUserBuffer Number of frames per user buffer, as requested + by the framesPerBuffer parameter to Pa_OpenStream. This parameter may be + zero to indicate that the user will accept any (and varying) buffer sizes. + + @param framesPerHostBuffer Specifies the number of frames per host buffer + for the fixed buffer size mode, and the maximum number of frames + per host buffer for the bounded host buffer size mode. It is ignored for + the other modes. + + @param hostBufferSizeMode A mode flag indicating the size variability of + host buffers that will be passed to the buffer processor. See + PaUtilHostBufferSizeMode for further details. + + @param streamCallback The user stream callback passed to Pa_OpenStream. + + @param userData The user data field passed to Pa_OpenStream. + + @note The interleave flag is ignored for host buffer formats. Host + interleave is determined by the use of different SetInput and SetOutput + functions. + + @return An error code indicating whether the initialization was successful. + If the error code is not PaNoError, the buffer processor was not initialized + and should not be used. + + @see Pa_OpenStream, PaUtilHostBufferSizeMode, PaUtil_TerminateBufferProcessor +*/ +PaError PaUtil_InitializeBufferProcessor( PaUtilBufferProcessor* bufferProcessor, + int inputChannelCount, PaSampleFormat userInputSampleFormat, + PaSampleFormat hostInputSampleFormat, + int outputChannelCount, PaSampleFormat userOutputSampleFormat, + PaSampleFormat hostOutputSampleFormat, + double sampleRate, + PaStreamFlags streamFlags, + unsigned long framesPerUserBuffer, /* 0 indicates don't care */ + unsigned long framesPerHostBuffer, + PaUtilHostBufferSizeMode hostBufferSizeMode, + PaStreamCallback *streamCallback, void *userData ); + + +/** Terminate a buffer processor's representation. Deallocates any temporary + buffers allocated by PaUtil_InitializeBufferProcessor. + + @param bufferProcessor The buffer processor structure to terminate. + + @see PaUtil_InitializeBufferProcessor. +*/ +void PaUtil_TerminateBufferProcessor( PaUtilBufferProcessor* bufferProcessor ); + + +/** Clear any internally buffered data. If you call + PaUtil_InitializeBufferProcessor in your OpenStream routine, make sure you + call PaUtil_ResetBufferProcessor in your StartStream call. + + @param bufferProcessor The buffer processor to reset. +*/ +void PaUtil_ResetBufferProcessor( PaUtilBufferProcessor* bufferProcessor ); + + +/** Retrieve the input latency of a buffer processor, in frames. + + @param bufferProcessor The buffer processor examine. + + @return The input latency introduced by the buffer processor, in frames. + + @see PaUtil_GetBufferProcessorOutputLatencyFrames +*/ +unsigned long PaUtil_GetBufferProcessorInputLatencyFrames( PaUtilBufferProcessor* bufferProcessor ); + +/** Retrieve the output latency of a buffer processor, in frames. + + @param bufferProcessor The buffer processor examine. + + @return The output latency introduced by the buffer processor, in frames. + + @see PaUtil_GetBufferProcessorInputLatencyFrames +*/ +unsigned long PaUtil_GetBufferProcessorOutputLatencyFrames( PaUtilBufferProcessor* bufferProcessor ); + +/*@}*/ + + +/** @name Host buffer pointer configuration + + Functions to set host input and output buffers, used by both callback streams + and blocking read/write streams. +*/ +/*@{*/ + + +/** Set the number of frames in the input host buffer(s) specified by the + PaUtil_Set*InputChannel functions. + + @param bufferProcessor The buffer processor. + + @param frameCount The number of host input frames. A 0 frameCount indicates to + use the framesPerHostBuffer value passed to PaUtil_InitializeBufferProcessor. + + @see PaUtil_SetNoInput, PaUtil_SetInputChannel, + PaUtil_SetInterleavedInputChannels, PaUtil_SetNonInterleavedInputChannel +*/ +void PaUtil_SetInputFrameCount( PaUtilBufferProcessor* bufferProcessor, + unsigned long frameCount ); + + +/** Indicate that no input is available. This function should be used when + priming the output of a full-duplex stream opened with the + paPrimeOutputBuffersUsingStreamCallback flag. Note that it is not necessary + to call this or any other PaUtil_Set*Input* functions for ouput-only streams. + + @param bufferProcessor The buffer processor. +*/ +void PaUtil_SetNoInput( PaUtilBufferProcessor* bufferProcessor ); + + +/** Provide the buffer processor with a pointer to a host input channel. + + @param bufferProcessor The buffer processor. + @param channel The channel number. + @param data The buffer. + @param stride The stride from one sample to the next, in samples. For + interleaved host buffers, the stride will usually be the same as the number of + channels in the buffer. +*/ +void PaUtil_SetInputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data, unsigned int stride ); + + +/** Provide the buffer processor with a pointer to an number of interleaved + host input channels. + + @param bufferProcessor The buffer processor. + @param firstChannel The first channel number. + @param data The buffer. + @param channelCount The number of interleaved channels in the buffer. If + channelCount is zero, the number of channels specified to + PaUtil_InitializeBufferProcessor will be used. +*/ +void PaUtil_SetInterleavedInputChannels( PaUtilBufferProcessor* bufferProcessor, + unsigned int firstChannel, void *data, unsigned int channelCount ); + + +/** Provide the buffer processor with a pointer to one non-interleaved host + output channel. + + @param bufferProcessor The buffer processor. + @param channel The channel number. + @param data The buffer. +*/ +void PaUtil_SetNonInterleavedInputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data ); + + +/** Use for the second buffer half when the input buffer is split in two halves. + @see PaUtil_SetInputFrameCount +*/ +void PaUtil_Set2ndInputFrameCount( PaUtilBufferProcessor* bufferProcessor, + unsigned long frameCount ); + +/** Use for the second buffer half when the input buffer is split in two halves. + @see PaUtil_SetInputChannel +*/ +void PaUtil_Set2ndInputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data, unsigned int stride ); + +/** Use for the second buffer half when the input buffer is split in two halves. + @see PaUtil_SetInterleavedInputChannels +*/ +void PaUtil_Set2ndInterleavedInputChannels( PaUtilBufferProcessor* bufferProcessor, + unsigned int firstChannel, void *data, unsigned int channelCount ); + +/** Use for the second buffer half when the input buffer is split in two halves. + @see PaUtil_SetNonInterleavedInputChannel +*/ +void PaUtil_Set2ndNonInterleavedInputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data ); + + +/** Set the number of frames in the output host buffer(s) specified by the + PaUtil_Set*OutputChannel functions. + + @param bufferProcessor The buffer processor. + + @param frameCount The number of host output frames. A 0 frameCount indicates to + use the framesPerHostBuffer value passed to PaUtil_InitializeBufferProcessor. + + @see PaUtil_SetOutputChannel, PaUtil_SetInterleavedOutputChannels, + PaUtil_SetNonInterleavedOutputChannel +*/ +void PaUtil_SetOutputFrameCount( PaUtilBufferProcessor* bufferProcessor, + unsigned long frameCount ); + + +/** Indicate that the output will be discarded. This function should be used + when implementing the paNeverDropInput mode for full duplex streams. + + @param bufferProcessor The buffer processor. +*/ +void PaUtil_SetNoOutput( PaUtilBufferProcessor* bufferProcessor ); + + +/** Provide the buffer processor with a pointer to a host output channel. + + @param bufferProcessor The buffer processor. + @param channel The channel number. + @param data The buffer. + @param stride The stride from one sample to the next, in samples. For + interleaved host buffers, the stride will usually be the same as the number of + channels in the buffer. +*/ +void PaUtil_SetOutputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data, unsigned int stride ); + + +/** Provide the buffer processor with a pointer to a number of interleaved + host output channels. + + @param bufferProcessor The buffer processor. + @param firstChannel The first channel number. + @param data The buffer. + @param channelCount The number of interleaved channels in the buffer. If + channelCount is zero, the number of channels specified to + PaUtil_InitializeBufferProcessor will be used. +*/ +void PaUtil_SetInterleavedOutputChannels( PaUtilBufferProcessor* bufferProcessor, + unsigned int firstChannel, void *data, unsigned int channelCount ); + + +/** Provide the buffer processor with a pointer to one non-interleaved host + output channel. + + @param bufferProcessor The buffer processor. + @param channel The channel number. + @param data The buffer. +*/ +void PaUtil_SetNonInterleavedOutputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data ); + + +/** Use for the second buffer half when the output buffer is split in two halves. + @see PaUtil_SetOutputFrameCount +*/ +void PaUtil_Set2ndOutputFrameCount( PaUtilBufferProcessor* bufferProcessor, + unsigned long frameCount ); + +/** Use for the second buffer half when the output buffer is split in two halves. + @see PaUtil_SetOutputChannel +*/ +void PaUtil_Set2ndOutputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data, unsigned int stride ); + +/** Use for the second buffer half when the output buffer is split in two halves. + @see PaUtil_SetInterleavedOutputChannels +*/ +void PaUtil_Set2ndInterleavedOutputChannels( PaUtilBufferProcessor* bufferProcessor, + unsigned int firstChannel, void *data, unsigned int channelCount ); + +/** Use for the second buffer half when the output buffer is split in two halves. + @see PaUtil_SetNonInterleavedOutputChannel +*/ +void PaUtil_Set2ndNonInterleavedOutputChannel( PaUtilBufferProcessor* bufferProcessor, + unsigned int channel, void *data ); + +/*@}*/ + + +/** @name Buffer processing functions for callback streams +*/ +/*@{*/ + +/** Commence processing a host buffer (or a pair of host buffers in the + full-duplex case) for a callback stream. + + @param bufferProcessor The buffer processor. + + @param timeInfo Timing information for the first sample of the host + buffer(s). This information may be adjusted when buffer adaption is being + performed. + + @param callbackStatusFlags Flags indicating whether underruns and overruns + have occurred since the last time the buffer processor was called. +*/ +void PaUtil_BeginBufferProcessing( PaUtilBufferProcessor* bufferProcessor, + PaStreamCallbackTimeInfo* timeInfo, PaStreamCallbackFlags callbackStatusFlags ); + + +/** Finish processing a host buffer (or a pair of host buffers in the + full-duplex case) for a callback stream. + + @param bufferProcessor The buffer processor. + + @param callbackResult On input, indicates a previous callback result, and on + exit, the result of the user stream callback, if it is called. + On entry callbackResult should contain one of { paContinue, paComplete, or + paAbort}. If paComplete is passed, the stream callback will not be called + but any audio that was generated by previous stream callbacks will be copied + to the output buffer(s). You can check whether the buffer processor's internal + buffer is empty by calling PaUtil_IsBufferProcessorOutputEmpty. + + If the stream callback is called its result is stored in *callbackResult. If + the stream callback returns paComplete or paAbort, all output buffers will be + full of valid data - some of which may be zeros to account for data that + wasn't generated by the terminating callback. + + @return The number of frames processed. This usually corresponds to the + number of frames specified by the PaUtil_Set*FrameCount functions, except in + the paUtilVariableHostBufferSizePartialUsageAllowed buffer size mode when a + smaller value may be returned. +*/ +unsigned long PaUtil_EndBufferProcessing( PaUtilBufferProcessor* bufferProcessor, + int *callbackResult ); + + +/** Determine whether any callback generated output remains in the buffer + processor's internal buffers. This method may be used to determine when to + continue calling PaUtil_EndBufferProcessing() after the callback has returned + a callbackResult of paComplete. + + @param bufferProcessor The buffer processor. + + @return Returns non-zero when callback generated output remains in the internal + buffer and zero (0) when there internal buffer contains no callback generated + data. +*/ +int PaUtil_IsBufferProcessorOutputEmpty( PaUtilBufferProcessor* bufferProcessor ); + +/*@}*/ + + +/** @name Buffer processing functions for blocking read/write streams +*/ +/*@{*/ + +/** Copy samples from host input channels set up by the PaUtil_Set*InputChannels + functions to a user supplied buffer. This function is intended for use with + blocking read/write streams. Copies the minimum of the number of + user frames (specified by the frameCount parameter) and the number of available + host frames (specified in a previous call to SetInputFrameCount()). + + @param bufferProcessor The buffer processor. + + @param buffer A pointer to the user buffer pointer, or a pointer to a pointer + to an array of user buffer pointers for a non-interleaved stream. It is + important that this parameter points to a copy of the user buffer pointers, + not to the actual user buffer pointers, because this function updates the + pointers before returning. + + @param frameCount The number of frames of data in the buffer(s) pointed to by + the buffer parameter. + + @return The number of frames copied. The buffer pointer(s) pointed to by the + buffer parameter are advanced to point to the frame(s) following the last one + filled. +*/ +unsigned long PaUtil_CopyInput( PaUtilBufferProcessor* bufferProcessor, + void **buffer, unsigned long frameCount ); + + +/* Copy samples from a user supplied buffer to host output channels set up by + the PaUtil_Set*OutputChannels functions. This function is intended for use with + blocking read/write streams. Copies the minimum of the number of + user frames (specified by the frameCount parameter) and the number of + host frames (specified in a previous call to SetOutputFrameCount()). + + @param bufferProcessor The buffer processor. + + @param buffer A pointer to the user buffer pointer, or a pointer to a pointer + to an array of user buffer pointers for a non-interleaved stream. It is + important that this parameter points to a copy of the user buffer pointers, + not to the actual user buffer pointers, because this function updates the + pointers before returning. + + @param frameCount The number of frames of data in the buffer(s) pointed to by + the buffer parameter. + + @return The number of frames copied. The buffer pointer(s) pointed to by the + buffer parameter are advanced to point to the frame(s) following the last one + copied. +*/ +unsigned long PaUtil_CopyOutput( PaUtilBufferProcessor* bufferProcessor, + const void ** buffer, unsigned long frameCount ); + + +/* Zero samples in host output channels set up by the PaUtil_Set*OutputChannels + functions. This function is useful for flushing streams. + Zeros the minimum of frameCount and the number of host frames specified in a + previous call to SetOutputFrameCount(). + + @param bufferProcessor The buffer processor. + + @param frameCount The maximum number of frames to zero. + + @return The number of frames zeroed. +*/ +unsigned long PaUtil_ZeroOutput( PaUtilBufferProcessor* bufferProcessor, + unsigned long frameCount ); + + +/*@}*/ + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_PROCESS_H */ diff --git a/portaudio/src/common/pa_ringbuffer.c b/portaudio/src/common/pa_ringbuffer.c new file mode 100644 index 0000000..b978d54 --- /dev/null +++ b/portaudio/src/common/pa_ringbuffer.c @@ -0,0 +1,237 @@ +/* + * $Id$ + * Portable Audio I/O Library + * Ring Buffer utility. + * + * Author: Phil Burk, http://www.softsynth.com + * modified for SMP safety on Mac OS X by Bjorn Roche + * modified for SMP safety on Linux by Leland Lucius + * also, allowed for const where possible + * modified for multiple-byte-sized data elements by Sven Fischer + * + * Note that this is safe only for a single-thread reader and a + * single-thread writer. + * + * This program uses the PortAudio Portable Audio Library. + * For more information see: http://www.portaudio.com + * Copyright (c) 1999-2000 Ross Bencina and Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** + @file + @ingroup common_src +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include "pa_ringbuffer.h" +#include <string.h> +#include "pa_memorybarrier.h" + +/*************************************************************************** + * Initialize FIFO. + * elementCount must be power of 2, returns -1 if not. + */ +ring_buffer_size_t PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementSizeBytes, ring_buffer_size_t elementCount, void *dataPtr ) +{ + if( ((elementCount-1) & elementCount) != 0) return -1; /* Not Power of two. */ + rbuf->bufferSize = elementCount; + rbuf->buffer = (char *)dataPtr; + PaUtil_FlushRingBuffer( rbuf ); + rbuf->bigMask = (elementCount*2)-1; + rbuf->smallMask = (elementCount)-1; + rbuf->elementSizeBytes = elementSizeBytes; + return 0; +} + +/*************************************************************************** +** Return number of elements available for reading. */ +ring_buffer_size_t PaUtil_GetRingBufferReadAvailable( const PaUtilRingBuffer *rbuf ) +{ + return ( (rbuf->writeIndex - rbuf->readIndex) & rbuf->bigMask ); +} +/*************************************************************************** +** Return number of elements available for writing. */ +ring_buffer_size_t PaUtil_GetRingBufferWriteAvailable( const PaUtilRingBuffer *rbuf ) +{ + return ( rbuf->bufferSize - PaUtil_GetRingBufferReadAvailable(rbuf)); +} + +/*************************************************************************** +** Clear buffer. Should only be called when buffer is NOT being read or written. */ +void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf ) +{ + rbuf->writeIndex = rbuf->readIndex = 0; +} + +/*************************************************************************** +** Get address of region(s) to which we can write data. +** If the region is contiguous, size2 will be zero. +** If non-contiguous, size2 will be the size of second region. +** Returns room available to be written or elementCount, whichever is smaller. +*/ +ring_buffer_size_t PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount, + void **dataPtr1, ring_buffer_size_t *sizePtr1, + void **dataPtr2, ring_buffer_size_t *sizePtr2 ) +{ + ring_buffer_size_t index; + ring_buffer_size_t available = PaUtil_GetRingBufferWriteAvailable( rbuf ); + if( elementCount > available ) elementCount = available; + /* Check to see if write is not contiguous. */ + index = rbuf->writeIndex & rbuf->smallMask; + if( (index + elementCount) > rbuf->bufferSize ) + { + /* Write data in two blocks that wrap the buffer. */ + ring_buffer_size_t firstHalf = rbuf->bufferSize - index; + *dataPtr1 = &rbuf->buffer[index*rbuf->elementSizeBytes]; + *sizePtr1 = firstHalf; + *dataPtr2 = &rbuf->buffer[0]; + *sizePtr2 = elementCount - firstHalf; + } + else + { + *dataPtr1 = &rbuf->buffer[index*rbuf->elementSizeBytes]; + *sizePtr1 = elementCount; + *dataPtr2 = NULL; + *sizePtr2 = 0; + } + + if( available ) + PaUtil_FullMemoryBarrier(); /* (write-after-read) => full barrier */ + + return elementCount; +} + + +/*************************************************************************** +*/ +ring_buffer_size_t PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount ) +{ + /* ensure that previous writes are seen before we update the write index + (write after write) + */ + PaUtil_WriteMemoryBarrier(); + return rbuf->writeIndex = (rbuf->writeIndex + elementCount) & rbuf->bigMask; +} + +/*************************************************************************** +** Get address of region(s) from which we can read data. +** If the region is contiguous, size2 will be zero. +** If non-contiguous, size2 will be the size of second region. +** Returns room available to be read or elementCount, whichever is smaller. +*/ +ring_buffer_size_t PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount, + void **dataPtr1, ring_buffer_size_t *sizePtr1, + void **dataPtr2, ring_buffer_size_t *sizePtr2 ) +{ + ring_buffer_size_t index; + ring_buffer_size_t available = PaUtil_GetRingBufferReadAvailable( rbuf ); /* doesn't use memory barrier */ + if( elementCount > available ) elementCount = available; + /* Check to see if read is not contiguous. */ + index = rbuf->readIndex & rbuf->smallMask; + if( (index + elementCount) > rbuf->bufferSize ) + { + /* Write data in two blocks that wrap the buffer. */ + ring_buffer_size_t firstHalf = rbuf->bufferSize - index; + *dataPtr1 = &rbuf->buffer[index*rbuf->elementSizeBytes]; + *sizePtr1 = firstHalf; + *dataPtr2 = &rbuf->buffer[0]; + *sizePtr2 = elementCount - firstHalf; + } + else + { + *dataPtr1 = &rbuf->buffer[index*rbuf->elementSizeBytes]; + *sizePtr1 = elementCount; + *dataPtr2 = NULL; + *sizePtr2 = 0; + } + + if( available ) + PaUtil_ReadMemoryBarrier(); /* (read-after-read) => read barrier */ + + return elementCount; +} +/*************************************************************************** +*/ +ring_buffer_size_t PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount ) +{ + /* ensure that previous reads (copies out of the ring buffer) are always completed before updating (writing) the read index. + (write-after-read) => full barrier + */ + PaUtil_FullMemoryBarrier(); + return rbuf->readIndex = (rbuf->readIndex + elementCount) & rbuf->bigMask; +} + +/*************************************************************************** +** Return elements written. */ +ring_buffer_size_t PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, ring_buffer_size_t elementCount ) +{ + ring_buffer_size_t size1, size2, numWritten; + void *data1, *data2; + numWritten = PaUtil_GetRingBufferWriteRegions( rbuf, elementCount, &data1, &size1, &data2, &size2 ); + if( size2 > 0 ) + { + + memcpy( data1, data, size1*rbuf->elementSizeBytes ); + data = ((char *)data) + size1*rbuf->elementSizeBytes; + memcpy( data2, data, size2*rbuf->elementSizeBytes ); + } + else + { + memcpy( data1, data, size1*rbuf->elementSizeBytes ); + } + PaUtil_AdvanceRingBufferWriteIndex( rbuf, numWritten ); + return numWritten; +} + +/*************************************************************************** +** Return elements read. */ +ring_buffer_size_t PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, ring_buffer_size_t elementCount ) +{ + ring_buffer_size_t size1, size2, numRead; + void *data1, *data2; + numRead = PaUtil_GetRingBufferReadRegions( rbuf, elementCount, &data1, &size1, &data2, &size2 ); + if( size2 > 0 ) + { + memcpy( data, data1, size1*rbuf->elementSizeBytes ); + data = ((char *)data) + size1*rbuf->elementSizeBytes; + memcpy( data, data2, size2*rbuf->elementSizeBytes ); + } + else + { + memcpy( data, data1, size1*rbuf->elementSizeBytes ); + } + PaUtil_AdvanceRingBufferReadIndex( rbuf, numRead ); + return numRead; +} diff --git a/portaudio/src/common/pa_ringbuffer.h b/portaudio/src/common/pa_ringbuffer.h new file mode 100644 index 0000000..400aaac --- /dev/null +++ b/portaudio/src/common/pa_ringbuffer.h @@ -0,0 +1,236 @@ +#ifndef PA_RINGBUFFER_H +#define PA_RINGBUFFER_H +/* + * $Id$ + * Portable Audio I/O Library + * Ring Buffer utility. + * + * Author: Phil Burk, http://www.softsynth.com + * modified for SMP safety on OS X by Bjorn Roche. + * also allowed for const where possible. + * modified for multiple-byte-sized data elements by Sven Fischer + * + * Note that this is safe only for a single-thread reader + * and a single-thread writer. + * + * This program is distributed with the PortAudio Portable Audio Library. + * For more information see: http://www.portaudio.com + * Copyright (c) 1999-2000 Ross Bencina and Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + @brief Single-reader single-writer lock-free ring buffer + + PaUtilRingBuffer is a ring buffer used to transport samples between + different execution contexts (threads, OS callbacks, interrupt handlers) + without requiring the use of any locks. This only works when there is + a single reader and a single writer (ie. one thread or callback writes + to the ring buffer, another thread or callback reads from it). + + The PaUtilRingBuffer structure manages a ring buffer containing N + elements, where N must be a power of two. An element may be any size + (specified in bytes). + + The memory area used to store the buffer elements must be allocated by + the client prior to calling PaUtil_InitializeRingBuffer() and must outlive + the use of the ring buffer. + + @note The ring buffer functions are not normally exposed in the PortAudio libraries. + If you want to call them then you will need to add pa_ringbuffer.c to your application source code. +*/ + +#if defined(__APPLE__) +#include <sys/types.h> +typedef int32_t ring_buffer_size_t; +#elif defined( __GNUC__ ) +typedef long ring_buffer_size_t; +#elif (_MSC_VER >= 1400) +typedef long ring_buffer_size_t; +#elif defined(_MSC_VER) || defined(__BORLANDC__) +typedef long ring_buffer_size_t; +#else +typedef long ring_buffer_size_t; +#endif + + + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + +typedef struct PaUtilRingBuffer +{ + ring_buffer_size_t bufferSize; /**< Number of elements in FIFO. Power of 2. Set by PaUtil_InitRingBuffer. */ + volatile ring_buffer_size_t writeIndex; /**< Index of next writable element. Set by PaUtil_AdvanceRingBufferWriteIndex. */ + volatile ring_buffer_size_t readIndex; /**< Index of next readable element. Set by PaUtil_AdvanceRingBufferReadIndex. */ + ring_buffer_size_t bigMask; /**< Used for wrapping indices with extra bit to distinguish full/empty. */ + ring_buffer_size_t smallMask; /**< Used for fitting indices to buffer. */ + ring_buffer_size_t elementSizeBytes; /**< Number of bytes per element. */ + char *buffer; /**< Pointer to the buffer containing the actual data. */ +}PaUtilRingBuffer; + +/** Initialize Ring Buffer to empty state ready to have elements written to it. + + @param rbuf The ring buffer. + + @param elementSizeBytes The size of a single data element in bytes. + + @param elementCount The number of elements in the buffer (must be a power of 2). + + @param dataPtr A pointer to a previously allocated area where the data + will be maintained. It must be elementCount*elementSizeBytes long. + + @return -1 if elementCount is not a power of 2, otherwise 0. +*/ +ring_buffer_size_t PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementSizeBytes, ring_buffer_size_t elementCount, void *dataPtr ); + +/** Reset buffer to empty. Should only be called when buffer is NOT being read or written. + + @param rbuf The ring buffer. +*/ +void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf ); + +/** Retrieve the number of elements available in the ring buffer for writing. + + @param rbuf The ring buffer. + + @return The number of elements available for writing. +*/ +ring_buffer_size_t PaUtil_GetRingBufferWriteAvailable( const PaUtilRingBuffer *rbuf ); + +/** Retrieve the number of elements available in the ring buffer for reading. + + @param rbuf The ring buffer. + + @return The number of elements available for reading. +*/ +ring_buffer_size_t PaUtil_GetRingBufferReadAvailable( const PaUtilRingBuffer *rbuf ); + +/** Write data to the ring buffer. + + @param rbuf The ring buffer. + + @param data The address of new data to write to the buffer. + + @param elementCount The number of elements to be written. + + @return The number of elements written. +*/ +ring_buffer_size_t PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, ring_buffer_size_t elementCount ); + +/** Read data from the ring buffer. + + @param rbuf The ring buffer. + + @param data The address where the data should be stored. + + @param elementCount The number of elements to be read. + + @return The number of elements read. +*/ +ring_buffer_size_t PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, ring_buffer_size_t elementCount ); + +/** Get address of region(s) to which we can write data. + + @param rbuf The ring buffer. + + @param elementCount The number of elements desired. + + @param dataPtr1 The address where the first (or only) region pointer will be + stored. + + @param sizePtr1 The address where the first (or only) region length will be + stored. + + @param dataPtr2 The address where the second region pointer will be stored if + the first region is too small to satisfy elementCount. + + @param sizePtr2 The address where the second region length will be stored if + the first region is too small to satisfy elementCount. + + @return The room available to be written or elementCount, whichever is smaller. +*/ +ring_buffer_size_t PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount, + void **dataPtr1, ring_buffer_size_t *sizePtr1, + void **dataPtr2, ring_buffer_size_t *sizePtr2 ); + +/** Advance the write index to the next location to be written. + + @param rbuf The ring buffer. + + @param elementCount The number of elements to advance. + + @return The new position. +*/ +ring_buffer_size_t PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount ); + +/** Get address of region(s) from which we can read data. + + @param rbuf The ring buffer. + + @param elementCount The number of elements desired. + + @param dataPtr1 The address where the first (or only) region pointer will be + stored. + + @param sizePtr1 The address where the first (or only) region length will be + stored. + + @param dataPtr2 The address where the second region pointer will be stored if + the first region is too small to satisfy elementCount. + + @param sizePtr2 The address where the second region length will be stored if + the first region is too small to satisfy elementCount. + + @return The number of elements available for reading. +*/ +ring_buffer_size_t PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount, + void **dataPtr1, ring_buffer_size_t *sizePtr1, + void **dataPtr2, ring_buffer_size_t *sizePtr2 ); + +/** Advance the read index to the next location to be read. + + @param rbuf The ring buffer. + + @param elementCount The number of elements to advance. + + @return The new position. +*/ +ring_buffer_size_t PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount ); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_RINGBUFFER_H */ diff --git a/portaudio/src/common/pa_stream.c b/portaudio/src/common/pa_stream.c new file mode 100644 index 0000000..ffbf530 --- /dev/null +++ b/portaudio/src/common/pa_stream.c @@ -0,0 +1,150 @@ +/* + * $Id$ + * Portable Audio I/O Library + * stream interface + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 2008 Ross Bencina + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Stream interfaces, representation structures and helper functions + used to interface between pa_front.c host API implementations. +*/ + + +#include "pa_stream.h" + + +void PaUtil_InitializeStreamInterface( PaUtilStreamInterface *streamInterface, + PaError (*Close)( PaStream* ), + PaError (*Start)( PaStream* ), + PaError (*Stop)( PaStream* ), + PaError (*Abort)( PaStream* ), + PaError (*IsStopped)( PaStream* ), + PaError (*IsActive)( PaStream* ), + PaTime (*GetTime)( PaStream* ), + double (*GetCpuLoad)( PaStream* ), + PaError (*Read)( PaStream*, void *, unsigned long ), + PaError (*Write)( PaStream*, const void *, unsigned long ), + signed long (*GetReadAvailable)( PaStream* ), + signed long (*GetWriteAvailable)( PaStream* ) ) +{ + streamInterface->Close = Close; + streamInterface->Start = Start; + streamInterface->Stop = Stop; + streamInterface->Abort = Abort; + streamInterface->IsStopped = IsStopped; + streamInterface->IsActive = IsActive; + streamInterface->GetTime = GetTime; + streamInterface->GetCpuLoad = GetCpuLoad; + streamInterface->Read = Read; + streamInterface->Write = Write; + streamInterface->GetReadAvailable = GetReadAvailable; + streamInterface->GetWriteAvailable = GetWriteAvailable; +} + + +void PaUtil_InitializeStreamRepresentation( PaUtilStreamRepresentation *streamRepresentation, + PaUtilStreamInterface *streamInterface, + PaStreamCallback *streamCallback, + void *userData ) +{ + streamRepresentation->magic = PA_STREAM_MAGIC; + streamRepresentation->nextOpenStream = 0; + streamRepresentation->streamInterface = streamInterface; + streamRepresentation->streamCallback = streamCallback; + streamRepresentation->streamFinishedCallback = 0; + + streamRepresentation->userData = userData; + + streamRepresentation->streamInfo.inputLatency = 0.; + streamRepresentation->streamInfo.outputLatency = 0.; + streamRepresentation->streamInfo.sampleRate = 0.; +} + + +void PaUtil_TerminateStreamRepresentation( PaUtilStreamRepresentation *streamRepresentation ) +{ + streamRepresentation->magic = 0; +} + + +PaError PaUtil_DummyRead( PaStream* stream, + void *buffer, + unsigned long frames ) +{ + (void)stream; /* unused parameter */ + (void)buffer; /* unused parameter */ + (void)frames; /* unused parameter */ + + return paCanNotReadFromACallbackStream; +} + + +PaError PaUtil_DummyWrite( PaStream* stream, + const void *buffer, + unsigned long frames ) +{ + (void)stream; /* unused parameter */ + (void)buffer; /* unused parameter */ + (void)frames; /* unused parameter */ + + return paCanNotWriteToACallbackStream; +} + + +signed long PaUtil_DummyGetReadAvailable( PaStream* stream ) +{ + (void)stream; /* unused parameter */ + + return paCanNotReadFromACallbackStream; +} + + +signed long PaUtil_DummyGetWriteAvailable( PaStream* stream ) +{ + (void)stream; /* unused parameter */ + + return paCanNotWriteToACallbackStream; +} + + +double PaUtil_DummyGetCpuLoad( PaStream* stream ) +{ + (void)stream; /* unused parameter */ + + return 0.0; +} diff --git a/portaudio/src/common/pa_stream.h b/portaudio/src/common/pa_stream.h new file mode 100644 index 0000000..4afda39 --- /dev/null +++ b/portaudio/src/common/pa_stream.h @@ -0,0 +1,205 @@ +#ifndef PA_STREAM_H +#define PA_STREAM_H +/* + * $Id$ + * Portable Audio I/O Library + * stream interface + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2008 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Stream interfaces, representation structures and helper functions + used to interface between pa_front.c host API implementations. +*/ + + +#include "portaudio.h" + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +#define PA_STREAM_MAGIC (0x18273645) + + +/** A structure representing an (abstract) interface to a host API. Contains + pointers to functions which implement the interface. + + All PaStreamInterface functions are guaranteed to be called with a non-null, + valid stream parameter. +*/ +typedef struct { + PaError (*Close)( PaStream* stream ); + PaError (*Start)( PaStream *stream ); + PaError (*Stop)( PaStream *stream ); + PaError (*Abort)( PaStream *stream ); + PaError (*IsStopped)( PaStream *stream ); + PaError (*IsActive)( PaStream *stream ); + PaTime (*GetTime)( PaStream *stream ); + double (*GetCpuLoad)( PaStream* stream ); + PaError (*Read)( PaStream* stream, void *buffer, unsigned long frames ); + PaError (*Write)( PaStream* stream, const void *buffer, unsigned long frames ); + signed long (*GetReadAvailable)( PaStream* stream ); + signed long (*GetWriteAvailable)( PaStream* stream ); +} PaUtilStreamInterface; + + +/** Initialize the fields of a PaUtilStreamInterface structure. +*/ +void PaUtil_InitializeStreamInterface( PaUtilStreamInterface *streamInterface, + PaError (*Close)( PaStream* ), + PaError (*Start)( PaStream* ), + PaError (*Stop)( PaStream* ), + PaError (*Abort)( PaStream* ), + PaError (*IsStopped)( PaStream* ), + PaError (*IsActive)( PaStream* ), + PaTime (*GetTime)( PaStream* ), + double (*GetCpuLoad)( PaStream* ), + PaError (*Read)( PaStream* stream, void *buffer, unsigned long frames ), + PaError (*Write)( PaStream* stream, const void *buffer, unsigned long frames ), + signed long (*GetReadAvailable)( PaStream* stream ), + signed long (*GetWriteAvailable)( PaStream* stream ) ); + + +/** Dummy Read function for use in interfaces to a callback based streams. + Pass to the Read parameter of PaUtil_InitializeStreamInterface. + @return An error code indicating that the function has no effect + because the stream is a callback stream. +*/ +PaError PaUtil_DummyRead( PaStream* stream, + void *buffer, + unsigned long frames ); + + +/** Dummy Write function for use in an interfaces to callback based streams. + Pass to the Write parameter of PaUtil_InitializeStreamInterface. + @return An error code indicating that the function has no effect + because the stream is a callback stream. +*/ +PaError PaUtil_DummyWrite( PaStream* stream, + const void *buffer, + unsigned long frames ); + + +/** Dummy GetReadAvailable function for use in interfaces to callback based + streams. Pass to the GetReadAvailable parameter of PaUtil_InitializeStreamInterface. + @return An error code indicating that the function has no effect + because the stream is a callback stream. +*/ +signed long PaUtil_DummyGetReadAvailable( PaStream* stream ); + + +/** Dummy GetWriteAvailable function for use in interfaces to callback based + streams. Pass to the GetWriteAvailable parameter of PaUtil_InitializeStreamInterface. + @return An error code indicating that the function has no effect + because the stream is a callback stream. +*/ +signed long PaUtil_DummyGetWriteAvailable( PaStream* stream ); + + + +/** Dummy GetCpuLoad function for use in an interface to a read/write stream. + Pass to the GetCpuLoad parameter of PaUtil_InitializeStreamInterface. + @return Returns 0. +*/ +double PaUtil_DummyGetCpuLoad( PaStream* stream ); + + +/** Non host specific data for a stream. This data is used by pa_front to + forward to the appropriate functions in the streamInterface structure. +*/ +typedef struct PaUtilStreamRepresentation { + unsigned long magic; /**< set to PA_STREAM_MAGIC */ + struct PaUtilStreamRepresentation *nextOpenStream; /**< field used by multi-api code */ + PaUtilStreamInterface *streamInterface; + PaStreamCallback *streamCallback; + PaStreamFinishedCallback *streamFinishedCallback; + void *userData; + PaStreamInfo streamInfo; +} PaUtilStreamRepresentation; + + +/** Initialize a PaUtilStreamRepresentation structure. + + @see PaUtil_InitializeStreamRepresentation +*/ +void PaUtil_InitializeStreamRepresentation( + PaUtilStreamRepresentation *streamRepresentation, + PaUtilStreamInterface *streamInterface, + PaStreamCallback *streamCallback, + void *userData ); + + +/** Clean up a PaUtilStreamRepresentation structure previously initialized + by a call to PaUtil_InitializeStreamRepresentation. + + @see PaUtil_InitializeStreamRepresentation +*/ +void PaUtil_TerminateStreamRepresentation( PaUtilStreamRepresentation *streamRepresentation ); + + +/** Check that the stream pointer is valid. + + @return Returns paNoError if the stream pointer appears to be OK, otherwise + returns an error indicating the cause of failure. +*/ +PaError PaUtil_ValidateStreamPointer( PaStream *stream ); + + +/** Cast an opaque stream pointer into a pointer to a PaUtilStreamRepresentation. + + @see PaUtilStreamRepresentation +*/ +#define PA_STREAM_REP( stream )\ + ((PaUtilStreamRepresentation*) (stream) ) + + +/** Cast an opaque stream pointer into a pointer to a PaUtilStreamInterface. + + @see PaUtilStreamRepresentation, PaUtilStreamInterface +*/ +#define PA_STREAM_INTERFACE( stream )\ + PA_STREAM_REP( (stream) )->streamInterface + + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_STREAM_H */ diff --git a/portaudio/src/common/pa_trace.c b/portaudio/src/common/pa_trace.c new file mode 100644 index 0000000..6763dfa --- /dev/null +++ b/portaudio/src/common/pa_trace.c @@ -0,0 +1,238 @@ +/* + * $Id$ + * Portable Audio I/O Library Trace Facility + * Store trace information in real-time for later printing. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2000 Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Real-time safe event trace logging facility for debugging. +*/ + + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include <assert.h> +#include "pa_trace.h" +#include "pa_util.h" +#include "pa_debugprint.h" + +#if PA_TRACE_REALTIME_EVENTS + +static char const *traceTextArray[PA_MAX_TRACE_RECORDS]; +static int traceIntArray[PA_MAX_TRACE_RECORDS]; +static int traceIndex = 0; +static int traceBlock = 0; + +/*********************************************************************/ +void PaUtil_ResetTraceMessages() +{ + traceIndex = 0; +} + +/*********************************************************************/ +void PaUtil_DumpTraceMessages() +{ + int i; + int messageCount = (traceIndex < PA_MAX_TRACE_RECORDS) ? traceIndex : PA_MAX_TRACE_RECORDS; + + printf("DumpTraceMessages: traceIndex = %d\n", traceIndex ); + for( i=0; i<messageCount; i++ ) + { + printf("%3d: %s = 0x%08X\n", + i, traceTextArray[i], traceIntArray[i] ); + } + PaUtil_ResetTraceMessages(); + fflush(stdout); +} + +/*********************************************************************/ +void PaUtil_AddTraceMessage( const char *msg, int data ) +{ + if( (traceIndex == PA_MAX_TRACE_RECORDS) && (traceBlock == 0) ) + { + traceBlock = 1; + /* PaUtil_DumpTraceMessages(); */ + } + else if( traceIndex < PA_MAX_TRACE_RECORDS ) + { + traceTextArray[traceIndex] = msg; + traceIntArray[traceIndex] = data; + traceIndex++; + } +} + +/************************************************************************/ +/* High performance log alternative */ +/************************************************************************/ + +typedef unsigned long long PaUint64; + +typedef struct __PaHighPerformanceLog +{ + unsigned magik; + int writePtr; + int readPtr; + int size; + double refTime; + char* data; +} PaHighPerformanceLog; + +static const unsigned kMagik = 0xcafebabe; + +#define USEC_PER_SEC (1000000ULL) + +int PaUtil_InitializeHighSpeedLog( LogHandle* phLog, unsigned maxSizeInBytes ) +{ + PaHighPerformanceLog* pLog = (PaHighPerformanceLog*)PaUtil_AllocateMemory(sizeof(PaHighPerformanceLog)); + if (pLog == 0) + { + return paInsufficientMemory; + } + assert(phLog != 0); + *phLog = pLog; + + pLog->data = (char*)PaUtil_AllocateMemory(maxSizeInBytes); + if (pLog->data == 0) + { + PaUtil_FreeMemory(pLog); + return paInsufficientMemory; + } + pLog->magik = kMagik; + pLog->size = maxSizeInBytes; + pLog->refTime = PaUtil_GetTime(); + return paNoError; +} + +void PaUtil_ResetHighSpeedLogTimeRef( LogHandle hLog ) +{ + PaHighPerformanceLog* pLog = (PaHighPerformanceLog*)hLog; + assert(pLog->magik == kMagik); + pLog->refTime = PaUtil_GetTime(); +} + +typedef struct __PaLogEntryHeader +{ + int size; + double timeStamp; +} PaLogEntryHeader; + +#ifdef __APPLE__ +#define _vsnprintf vsnprintf +#define min(a,b) ((a)<(b)?(a):(b)) +#endif + + +int PaUtil_AddHighSpeedLogMessage( LogHandle hLog, const char* fmt, ... ) +{ + va_list l; + int n = 0; + PaHighPerformanceLog* pLog = (PaHighPerformanceLog*)hLog; + if (pLog != 0) + { + PaLogEntryHeader* pHeader; + char* p; + int maxN; + assert(pLog->magik == kMagik); + pHeader = (PaLogEntryHeader*)( pLog->data + pLog->writePtr ); + p = (char*)( pHeader + 1 ); + maxN = pLog->size - pLog->writePtr - 2 * sizeof(PaLogEntryHeader); + + pHeader->timeStamp = PaUtil_GetTime() - pLog->refTime; + if (maxN > 0) + { + if (maxN > 32) + { + va_start(l, fmt); + n = _vsnprintf(p, min(1024, maxN), fmt, l); + va_end(l); + } + else { + n = sprintf(p, "End of log..."); + } + n = ((n + sizeof(unsigned)) & ~(sizeof(unsigned)-1)) + sizeof(PaLogEntryHeader); + pHeader->size = n; +#if 0 + PaUtil_DebugPrint("%05u.%03u: %s\n", pHeader->timeStamp/1000, pHeader->timeStamp%1000, p); +#endif + pLog->writePtr += n; + } + } + return n; +} + +void PaUtil_DumpHighSpeedLog( LogHandle hLog, const char* fileName ) +{ + FILE* f = (fileName != NULL) ? fopen(fileName, "w") : stdout; + unsigned localWritePtr; + PaHighPerformanceLog* pLog = (PaHighPerformanceLog*)hLog; + assert(pLog->magik == kMagik); + localWritePtr = pLog->writePtr; + while (pLog->readPtr != localWritePtr) + { + const PaLogEntryHeader* pHeader = (const PaLogEntryHeader*)( pLog->data + pLog->readPtr ); + const char* p = (const char*)( pHeader + 1 ); + const PaUint64 ts = (const PaUint64)( pHeader->timeStamp * USEC_PER_SEC ); + assert(pHeader->size < (1024+sizeof(unsigned)+sizeof(PaLogEntryHeader))); + fprintf(f, "%05u.%03u: %s\n", (unsigned)(ts/1000), (unsigned)(ts%1000), p); + pLog->readPtr += pHeader->size; + } + if (f != stdout) + { + fclose(f); + } +} + +void PaUtil_DiscardHighSpeedLog( LogHandle hLog ) +{ + PaHighPerformanceLog* pLog = (PaHighPerformanceLog*)hLog; + assert(pLog->magik == kMagik); + PaUtil_FreeMemory(pLog->data); + PaUtil_FreeMemory(pLog); +} + +#else +/* This stub was added so that this file will generate a symbol. + * Otherwise linker/archiver programs will complain. + */ +int PaUtil_TraceStubToSatisfyLinker(void) +{ + return 0; +} +#endif /* TRACE_REALTIME_EVENTS */ diff --git a/portaudio/src/common/pa_trace.h b/portaudio/src/common/pa_trace.h new file mode 100644 index 0000000..7827766 --- /dev/null +++ b/portaudio/src/common/pa_trace.h @@ -0,0 +1,117 @@ +#ifndef PA_TRACE_H +#define PA_TRACE_H +/* + * $Id$ + * Portable Audio I/O Library Trace Facility + * Store trace information in real-time for later printing. + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2000 Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Real-time safe event trace logging facility for debugging. + + Allows data to be logged to a fixed size trace buffer in a real-time + execution context (such as at interrupt time). Each log entry consists + of a message comprising a string pointer and an int. The trace buffer + may be dumped to stdout later. + + This facility is only active if PA_TRACE_REALTIME_EVENTS is set to 1, + otherwise the trace functions expand to no-ops. + + @fn PaUtil_ResetTraceMessages + @brief Clear the trace buffer. + + @fn PaUtil_AddTraceMessage + @brief Add a message to the trace buffer. A message consists of string and an int. + @param msg The string pointer must remain valid until PaUtil_DumpTraceMessages + is called. As a result, usually only string literals should be passed as + the msg parameter. + + @fn PaUtil_DumpTraceMessages + @brief Print all messages in the trace buffer to stdout and clear the trace buffer. +*/ + +#ifndef PA_TRACE_REALTIME_EVENTS +#define PA_TRACE_REALTIME_EVENTS (0) /**< Set to 1 to enable logging using the trace functions defined below */ +#endif + +#ifndef PA_MAX_TRACE_RECORDS +#define PA_MAX_TRACE_RECORDS (2048) /**< Maximum number of records stored in trace buffer */ +#endif + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +#if PA_TRACE_REALTIME_EVENTS + +void PaUtil_ResetTraceMessages(); +void PaUtil_AddTraceMessage( const char *msg, int data ); +void PaUtil_DumpTraceMessages(); + +/* Alternative interface */ + +typedef void* LogHandle; + +int PaUtil_InitializeHighSpeedLog(LogHandle* phLog, unsigned maxSizeInBytes); +void PaUtil_ResetHighSpeedLogTimeRef(LogHandle hLog); +int PaUtil_AddHighSpeedLogMessage(LogHandle hLog, const char* fmt, ...); +void PaUtil_DumpHighSpeedLog(LogHandle hLog, const char* fileName); +void PaUtil_DiscardHighSpeedLog(LogHandle hLog); + +#else + +#define PaUtil_ResetTraceMessages() /* noop */ +#define PaUtil_AddTraceMessage(msg,data) /* noop */ +#define PaUtil_DumpTraceMessages() /* noop */ + +#define PaUtil_InitializeHighSpeedLog(phLog, maxSizeInBytes) (0) +#define PaUtil_ResetHighSpeedLogTimeRef(hLog) +#define PaUtil_AddHighSpeedLogMessage(...) (0) +#define PaUtil_DumpHighSpeedLog(hLog, fileName) +#define PaUtil_DiscardHighSpeedLog(hLog) + +#endif + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* PA_TRACE_H */ diff --git a/portaudio/src/common/pa_types.h b/portaudio/src/common/pa_types.h new file mode 100644 index 0000000..f628783 --- /dev/null +++ b/portaudio/src/common/pa_types.h @@ -0,0 +1,107 @@ +#ifndef PA_TYPES_H +#define PA_TYPES_H + +/* + * Portable Audio I/O Library + * integer type definitions + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2006 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Definition of 16 and 32 bit integer types (PaInt16, PaInt32 etc) + + SIZEOF_SHORT, SIZEOF_INT and SIZEOF_LONG are set by the configure script + when it is used. Otherwise we default to the common 32 bit values, if your + platform doesn't use configure, and doesn't use the default values below + you will need to explicitly define these symbols in your make file. + + A PA_VALIDATE_SIZES macro is provided to assert that the values set in this + file are correct. +*/ + +#ifndef SIZEOF_SHORT +#define SIZEOF_SHORT 2 +#endif + +#ifndef SIZEOF_INT +#define SIZEOF_INT 4 +#endif + +#ifndef SIZEOF_LONG +#define SIZEOF_LONG 4 +#endif + + +#if SIZEOF_SHORT == 2 +typedef signed short PaInt16; +typedef unsigned short PaUint16; +#elif SIZEOF_INT == 2 +typedef signed int PaInt16; +typedef unsigned int PaUint16; +#else +#error pa_types.h was unable to determine which type to use for 16bit integers on the target platform +#endif + +#if SIZEOF_SHORT == 4 +typedef signed short PaInt32; +typedef unsigned short PaUint32; +#elif SIZEOF_INT == 4 +typedef signed int PaInt32; +typedef unsigned int PaUint32; +#elif SIZEOF_LONG == 4 +typedef signed long PaInt32; +typedef unsigned long PaUint32; +#else +#error pa_types.h was unable to determine which type to use for 32bit integers on the target platform +#endif + + +/* PA_VALIDATE_TYPE_SIZES compares the size of the integer types at runtime to + ensure that PortAudio was configured correctly, and raises an assertion if + they don't match the expected values. <assert.h> must be included in the + context in which this macro is used. +*/ +#define PA_VALIDATE_TYPE_SIZES \ + { \ + assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaUint16 ) == 2 ); \ + assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaInt16 ) == 2 ); \ + assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaUint32 ) == 4 ); \ + assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaInt32 ) == 4 ); \ + } + + +#endif /* PA_TYPES_H */ diff --git a/portaudio/src/common/pa_util.h b/portaudio/src/common/pa_util.h new file mode 100644 index 0000000..08dc0ec --- /dev/null +++ b/portaudio/src/common/pa_util.h @@ -0,0 +1,159 @@ +#ifndef PA_UTIL_H +#define PA_UTIL_H +/* + * $Id$ + * Portable Audio I/O Library implementation utilities header + * common implementation utilities and interfaces + * + * Based on the Open Source API proposed by Ross Bencina + * Copyright (c) 1999-2008 Ross Bencina, Phil Burk + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * The text above constitutes the entire PortAudio license; however, + * the PortAudio community also makes the following non-binding requests: + * + * Any person wishing to distribute modifications to the Software is + * requested to send the modifications to the original developer so that + * they can be incorporated into the canonical version. It is also + * requested that these non-binding requests be included along with the + * license above. + */ + +/** @file + @ingroup common_src + + @brief Prototypes for utility functions used by PortAudio implementations. + + Some functions declared here are defined in pa_front.c while others + are implemented separately for each platform. +*/ + + +#include "portaudio.h" + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +struct PaUtilHostApiRepresentation; + + +/** Retrieve a specific host API representation. This function can be used + by implementations to retrieve a pointer to their representation in + host api specific extension functions which aren't passed a rep pointer + by pa_front.c. + + @param hostApi A pointer to a host API representation pointer. Upon success + this will receive the requested representation pointer. + + @param type A valid host API type identifier. + + @returns An error code. If the result is PaNoError then a pointer to the + requested host API representation will be stored in *hostApi. If the host API + specified by type is not found, this function returns paHostApiNotFound. +*/ +PaError PaUtil_GetHostApiRepresentation( struct PaUtilHostApiRepresentation **hostApi, + PaHostApiTypeId type ); + + +/** Convert a PortAudio device index into a host API specific device index. + @param hostApiDevice Pointer to a device index, on success this will receive the + converted device index value. + @param device The PortAudio device index to convert. + @param hostApi The host api which the index should be converted for. + + @returns On success returns PaNoError and places the converted index in the + hostApiDevice parameter. +*/ +PaError PaUtil_DeviceIndexToHostApiDeviceIndex( + PaDeviceIndex *hostApiDevice, PaDeviceIndex device, + struct PaUtilHostApiRepresentation *hostApi ); + + +/** Set the host error information returned by Pa_GetLastHostErrorInfo. This + function and the paUnanticipatedHostError error code should be used as a + last resort. Implementors should use existing PA error codes where possible, + or nominate new ones. Note that at it is always better to use + PaUtil_SetLastHostErrorInfo() and paUnanticipatedHostError than to return an + ambiguous or inaccurate PaError code. + + @param hostApiType The host API which encountered the error (ie of the caller) + + @param errorCode The error code returned by the native API function. + + @param errorText A string describing the error. PaUtil_SetLastHostErrorInfo + makes a copy of the string, so it is not necessary for the pointer to remain + valid after the call to PaUtil_SetLastHostErrorInfo() returns. + +*/ +void PaUtil_SetLastHostErrorInfo( PaHostApiTypeId hostApiType, long errorCode, + const char *errorText ); + + + +/* the following functions are implemented in a platform platform specific + .c file +*/ + +/** Allocate size bytes, guaranteed to be aligned to a FIXME byte boundary */ +void *PaUtil_AllocateMemory( long size ); + + +/** Release block if non-NULL. block may be NULL */ +void PaUtil_FreeMemory( void *block ); + + +/** Return the number of currently allocated blocks. This function can be + used for detecting memory leaks. + + @note Allocations will only be tracked if PA_TRACK_MEMORY is #defined. If + it isn't, this function will always return 0. +*/ +int PaUtil_CountCurrentlyAllocatedBlocks( void ); + + +/** Initialize the clock used by PaUtil_GetTime(). Call this before calling + PaUtil_GetTime. + + @see PaUtil_GetTime +*/ +void PaUtil_InitializeClock( void ); + + +/** Return the system time in seconds. Used to implement CPU load functions + + @see PaUtil_InitializeClock +*/ +double PaUtil_GetTime( void ); + + +/* void Pa_Sleep( long msec ); must also be implemented in per-platform .c file */ + + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* PA_UTIL_H */ |