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Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
16440 changed files with 4239995 additions and 2 deletions
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69
Src/Plugins/Output/out_wasapi/waveformat.cpp Normal file
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#define INITGUID
#include <mmdeviceapi.h>
#undef INITGUID
#include <mmreg.h>
static WAVEFORMATEXTENSIBLE format_24_stereo =
{
{
WAVE_FORMAT_EXTENSIBLE,
2,
88200,
705600,
8,
32,
22,
},
24,
SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT,
KSDATAFORMAT_SUBTYPE_PCM
};
static WORD BitsPerSampleContainer(int bitspersamp)
{
if (bitspersamp <= 8) {
return 8;
} else if (bitspersamp <= 16) {
return 16;
} else if (bitspersamp <= 24) {
return 24;
} else {
return 32;
}
}
static WORD ChannelMask(int numchannels)
{
switch(numchannels) {
case 1:
return SPEAKER_FRONT_CENTER;
case 2:
return SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT;
case 4: // quadraphonic
return SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT;
case 6: // 5.1
return SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY;
default:
return 0;
}
}
WAVEFORMATEXTENSIBLE WaveFormatForParameters(int samplerate, int numchannels, int bitspersamp)
{
WAVEFORMATEXTENSIBLE wave_format;
wave_format.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; /* format type */
wave_format.Format.nChannels = numchannels; /* number of channels (i.e. mono, stereo...) */
wave_format.Format.nSamplesPerSec = samplerate; /* sample rate */
wave_format.Format.nAvgBytesPerSec = BitsPerSampleContainer(bitspersamp) * numchannels * samplerate / 8; /* for buffer estimation */
wave_format.Format.nBlockAlign = BitsPerSampleContainer(bitspersamp) * numchannels / 8; /* block size of data */
wave_format.Format.wBitsPerSample = BitsPerSampleContainer(bitspersamp);
wave_format.Format.cbSize = 22; /* the count in bytes of the size of */
/* extra information (after cbSize) */
wave_format.Samples.wValidBitsPerSample = bitspersamp;
wave_format.dwChannelMask = ChannelMask(numchannels);
wave_format.SubFormat=KSDATAFORMAT_SUBTYPE_PCM;
return wave_format;
}