200 lines
9.5 KiB
C
200 lines
9.5 KiB
C
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#ifndef PA_WIN_WAVEFORMAT_H
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#define PA_WIN_WAVEFORMAT_H
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/*
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* PortAudio Portable Real-Time Audio Library
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* Windows WAVEFORMAT* data structure utilities
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* portaudio.h should be included before this file.
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*
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* Copyright (c) 2007 Ross Bencina
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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/** @file
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@ingroup public_header
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@brief Windows specific PortAudio API extension and utilities header file.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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The following #defines for speaker channel masks are the same
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as those in ksmedia.h, except with PAWIN_ prepended, KSAUDIO_ removed
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in some cases, and casts to PaWinWaveFormatChannelMask added.
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*/
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typedef unsigned long PaWinWaveFormatChannelMask;
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/* Speaker Positions: */
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#define PAWIN_SPEAKER_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1)
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#define PAWIN_SPEAKER_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x2)
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#define PAWIN_SPEAKER_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x4)
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#define PAWIN_SPEAKER_LOW_FREQUENCY ((PaWinWaveFormatChannelMask)0x8)
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#define PAWIN_SPEAKER_BACK_LEFT ((PaWinWaveFormatChannelMask)0x10)
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#define PAWIN_SPEAKER_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20)
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#define PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER ((PaWinWaveFormatChannelMask)0x40)
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#define PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER ((PaWinWaveFormatChannelMask)0x80)
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#define PAWIN_SPEAKER_BACK_CENTER ((PaWinWaveFormatChannelMask)0x100)
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#define PAWIN_SPEAKER_SIDE_LEFT ((PaWinWaveFormatChannelMask)0x200)
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#define PAWIN_SPEAKER_SIDE_RIGHT ((PaWinWaveFormatChannelMask)0x400)
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#define PAWIN_SPEAKER_TOP_CENTER ((PaWinWaveFormatChannelMask)0x800)
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#define PAWIN_SPEAKER_TOP_FRONT_LEFT ((PaWinWaveFormatChannelMask)0x1000)
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#define PAWIN_SPEAKER_TOP_FRONT_CENTER ((PaWinWaveFormatChannelMask)0x2000)
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#define PAWIN_SPEAKER_TOP_FRONT_RIGHT ((PaWinWaveFormatChannelMask)0x4000)
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#define PAWIN_SPEAKER_TOP_BACK_LEFT ((PaWinWaveFormatChannelMask)0x8000)
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#define PAWIN_SPEAKER_TOP_BACK_CENTER ((PaWinWaveFormatChannelMask)0x10000)
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#define PAWIN_SPEAKER_TOP_BACK_RIGHT ((PaWinWaveFormatChannelMask)0x20000)
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/* Bit mask locations reserved for future use */
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#define PAWIN_SPEAKER_RESERVED ((PaWinWaveFormatChannelMask)0x7FFC0000)
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/* Used to specify that any possible permutation of speaker configurations */
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#define PAWIN_SPEAKER_ALL ((PaWinWaveFormatChannelMask)0x80000000)
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/* DirectSound Speaker Config */
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#define PAWIN_SPEAKER_DIRECTOUT 0
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#define PAWIN_SPEAKER_MONO (PAWIN_SPEAKER_FRONT_CENTER)
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#define PAWIN_SPEAKER_STEREO (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT)
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#define PAWIN_SPEAKER_QUAD (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
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#define PAWIN_SPEAKER_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_BACK_CENTER)
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#define PAWIN_SPEAKER_5POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
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PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT)
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#define PAWIN_SPEAKER_7POINT1 (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
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PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
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PAWIN_SPEAKER_FRONT_LEFT_OF_CENTER | PAWIN_SPEAKER_FRONT_RIGHT_OF_CENTER)
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#define PAWIN_SPEAKER_5POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
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PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
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#define PAWIN_SPEAKER_7POINT1_SURROUND (PAWIN_SPEAKER_FRONT_LEFT | PAWIN_SPEAKER_FRONT_RIGHT | \
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PAWIN_SPEAKER_FRONT_CENTER | PAWIN_SPEAKER_LOW_FREQUENCY | \
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PAWIN_SPEAKER_BACK_LEFT | PAWIN_SPEAKER_BACK_RIGHT | \
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PAWIN_SPEAKER_SIDE_LEFT | PAWIN_SPEAKER_SIDE_RIGHT)
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/*
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According to the Microsoft documentation:
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The following are obsolete 5.1 and 7.1 settings (they lack side speakers). Note this means
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that the default 5.1 and 7.1 settings (KSAUDIO_SPEAKER_5POINT1 and KSAUDIO_SPEAKER_7POINT1 are
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similarly obsolete but are unchanged for compatibility reasons).
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*/
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#define PAWIN_SPEAKER_5POINT1_BACK PAWIN_SPEAKER_5POINT1
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#define PAWIN_SPEAKER_7POINT1_WIDE PAWIN_SPEAKER_7POINT1
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/* DVD Speaker Positions */
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#define PAWIN_SPEAKER_GROUND_FRONT_LEFT PAWIN_SPEAKER_FRONT_LEFT
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#define PAWIN_SPEAKER_GROUND_FRONT_CENTER PAWIN_SPEAKER_FRONT_CENTER
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#define PAWIN_SPEAKER_GROUND_FRONT_RIGHT PAWIN_SPEAKER_FRONT_RIGHT
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#define PAWIN_SPEAKER_GROUND_REAR_LEFT PAWIN_SPEAKER_BACK_LEFT
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#define PAWIN_SPEAKER_GROUND_REAR_RIGHT PAWIN_SPEAKER_BACK_RIGHT
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#define PAWIN_SPEAKER_TOP_MIDDLE PAWIN_SPEAKER_TOP_CENTER
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#define PAWIN_SPEAKER_SUPER_WOOFER PAWIN_SPEAKER_LOW_FREQUENCY
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/*
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PaWinWaveFormat is defined here to provide compatibility with
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compilation environments which don't have headers defining
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WAVEFORMATEXTENSIBLE (e.g. older versions of MSVC, Borland C++ etc.
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The fields for WAVEFORMATEX and WAVEFORMATEXTENSIBLE are declared as an
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unsigned char array here to avoid clients who include this file having
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a dependency on windows.h and mmsystem.h, and also to to avoid having
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to write separate packing pragmas for each compiler.
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*/
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#define PAWIN_SIZEOF_WAVEFORMATEX 18
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#define PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE (PAWIN_SIZEOF_WAVEFORMATEX + 22)
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typedef struct{
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unsigned char fields[ PAWIN_SIZEOF_WAVEFORMATEXTENSIBLE ];
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unsigned long extraLongForAlignment; /* ensure that compiler aligns struct to DWORD */
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} PaWinWaveFormat;
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/*
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WAVEFORMATEXTENSIBLE fields:
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union {
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WORD wValidBitsPerSample;
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WORD wSamplesPerBlock;
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WORD wReserved;
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} Samples;
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DWORD dwChannelMask;
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GUID SubFormat;
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*/
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#define PAWIN_INDEXOF_WVALIDBITSPERSAMPLE (PAWIN_SIZEOF_WAVEFORMATEX+0)
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#define PAWIN_INDEXOF_DWCHANNELMASK (PAWIN_SIZEOF_WAVEFORMATEX+2)
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#define PAWIN_INDEXOF_SUBFORMAT (PAWIN_SIZEOF_WAVEFORMATEX+6)
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/*
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Valid values to pass for the waveFormatTag PaWin_InitializeWaveFormatEx and
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PaWin_InitializeWaveFormatExtensible functions below. These must match
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the standard Windows WAVE_FORMAT_* values.
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*/
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#define PAWIN_WAVE_FORMAT_PCM (1)
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#define PAWIN_WAVE_FORMAT_IEEE_FLOAT (3)
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#define PAWIN_WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092)
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#define PAWIN_WAVE_FORMAT_WMA_SPDIF (0x0164)
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/*
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returns PAWIN_WAVE_FORMAT_PCM or PAWIN_WAVE_FORMAT_IEEE_FLOAT
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depending on the sampleFormat parameter.
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*/
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int PaWin_SampleFormatToLinearWaveFormatTag( PaSampleFormat sampleFormat );
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/*
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Use the following two functions to initialize the waveformat structure.
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*/
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void PaWin_InitializeWaveFormatEx( PaWinWaveFormat *waveFormat,
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int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate );
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void PaWin_InitializeWaveFormatExtensible( PaWinWaveFormat *waveFormat,
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int numChannels, PaSampleFormat sampleFormat, int waveFormatTag, double sampleRate,
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PaWinWaveFormatChannelMask channelMask );
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/* Map a channel count to a speaker channel mask */
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PaWinWaveFormatChannelMask PaWin_DefaultChannelMask( int numChannels );
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* PA_WIN_WAVEFORMAT_H */
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