From 37c97e345d12f95dde44e1d1a4c2f2aadd4615bc Mon Sep 17 00:00:00 2001 From: sanine Date: Thu, 25 Aug 2022 14:54:53 -0500 Subject: add initial structure --- portaudio/include/pa_win_wmme.h | 185 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 portaudio/include/pa_win_wmme.h (limited to 'portaudio/include/pa_win_wmme.h') diff --git a/portaudio/include/pa_win_wmme.h b/portaudio/include/pa_win_wmme.h new file mode 100644 index 0000000..814022b --- /dev/null +++ b/portaudio/include/pa_win_wmme.h @@ -0,0 +1,185 @@ +#ifndef PA_WIN_WMME_H +#define PA_WIN_WMME_H +/* + * $Id$ + * PortAudio Portable Real-Time Audio Library + * MME specific extensions + * + * 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 public_header + @brief WMME-specific PortAudio API extension header file. +*/ + +#include "portaudio.h" +#include "pa_win_waveformat.h" + +#ifdef __cplusplus +extern "C" +{ +#endif /* __cplusplus */ + + +/* The following are flags which can be set in + PaWinMmeStreamInfo's flags field. +*/ + +#define paWinMmeUseLowLevelLatencyParameters (0x01) +#define paWinMmeUseMultipleDevices (0x02) /* use mme specific multiple device feature */ +#define paWinMmeUseChannelMask (0x04) + +/* By default, the mme implementation drops the processing thread's priority + to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100% + This flag disables any priority throttling. The processing thread will always + run at THREAD_PRIORITY_TIME_CRITICAL. +*/ +#define paWinMmeDontThrottleOverloadedProcessingThread (0x08) + +/* Flags for non-PCM spdif passthrough. +*/ +#define paWinMmeWaveFormatDolbyAc3Spdif (0x10) +#define paWinMmeWaveFormatWmaSpdif (0x20) + + +typedef struct PaWinMmeDeviceAndChannelCount{ + PaDeviceIndex device; + int channelCount; +}PaWinMmeDeviceAndChannelCount; + + +typedef struct PaWinMmeStreamInfo{ + unsigned long size; /**< sizeof(PaWinMmeStreamInfo) */ + PaHostApiTypeId hostApiType; /**< paMME */ + unsigned long version; /**< 1 */ + + unsigned long flags; + + /* low-level latency setting support + These settings control the number and size of host buffers in order + to set latency. They will be used instead of the generic parameters + to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters + flag. + + If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters + are supplied for both input and output in a full duplex stream, then the + input and output framesPerBuffer must be the same, or the larger of the + two must be a multiple of the smaller, otherwise a + paIncompatibleHostApiSpecificStreamInfo error will be returned from + Pa_OpenStream(). + */ + unsigned long framesPerBuffer; + unsigned long bufferCount; /* formerly numBuffers */ + + /* multiple devices per direction support + If flags contains the PaWinMmeUseMultipleDevices flag, + this functionality will be used, otherwise the device parameter to + Pa_OpenStream() will be used instead. + If devices are specified here, the corresponding device parameter + to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification, + otherwise an paInvalidDevice error will result. + The total number of channels across all specified devices + must agree with the corresponding channelCount parameter to + Pa_OpenStream() otherwise a paInvalidChannelCount error will result. + */ + PaWinMmeDeviceAndChannelCount *devices; + unsigned long deviceCount; + + /* + support for WAVEFORMATEXTENSIBLE channel masks. If flags contains + paWinMmeUseChannelMask this allows you to specify which speakers + to address in a multichannel stream. Constants for channelMask + are specified in pa_win_waveformat.h + + */ + PaWinWaveFormatChannelMask channelMask; + +}PaWinMmeStreamInfo; + + +/** Retrieve the number of wave in handles used by a PortAudio WinMME stream. + Returns zero if the stream is output only. + + @return A non-negative value indicating the number of wave in handles + or, a PaErrorCode (which are always negative) if PortAudio is not initialized + or an error is encountered. + + @see PaWinMME_GetStreamInputHandle +*/ +int PaWinMME_GetStreamInputHandleCount( PaStream* stream ); + + +/** Retrieve a wave in handle used by a PortAudio WinMME stream. + + @param stream The stream to query. + @param handleIndex The zero based index of the wave in handle to retrieve. This + should be in the range [0, PaWinMME_GetStreamInputHandleCount(stream)-1]. + + @return A valid wave in handle, or NULL if an error occurred. + + @see PaWinMME_GetStreamInputHandle +*/ +HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex ); + + +/** Retrieve the number of wave out handles used by a PortAudio WinMME stream. + Returns zero if the stream is input only. + + @return A non-negative value indicating the number of wave out handles + or, a PaErrorCode (which are always negative) if PortAudio is not initialized + or an error is encountered. + + @see PaWinMME_GetStreamOutputHandle +*/ +int PaWinMME_GetStreamOutputHandleCount( PaStream* stream ); + + +/** Retrieve a wave out handle used by a PortAudio WinMME stream. + + @param stream The stream to query. + @param handleIndex The zero based index of the wave out handle to retrieve. + This should be in the range [0, PaWinMME_GetStreamOutputHandleCount(stream)-1]. + + @return A valid wave out handle, or NULL if an error occurred. + + @see PaWinMME_GetStreamOutputHandleCount +*/ +HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex ); + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* PA_WIN_WMME_H */ -- cgit v1.2.1