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authorsanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
committersanine <sanine.not@pm.me>2022-08-27 23:52:56 -0500
commita4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 (patch)
tree13bd5bfa15e6fea2a12f176bae79adf9c6fd0933 /portaudio/src/common/pa_converters.c
parentbde3e4f1bb7b8f8abca0884a7d994ee1c17a66b1 (diff)
add plibsys
Diffstat (limited to 'portaudio/src/common/pa_converters.c')
-rw-r--r--portaudio/src/common/pa_converters.c1983
1 files changed, 0 insertions, 1983 deletions
diff --git a/portaudio/src/common/pa_converters.c b/portaudio/src/common/pa_converters.c
deleted file mode 100644
index 93e44a3..0000000
--- a/portaudio/src/common/pa_converters.c
+++ /dev/null
@@ -1,1983 +0,0 @@
-/*
- * $Id$
- * 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 */