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directsound: For channel counts > 2, generate a dwChannelMask for CreateSoundBuffer

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This commit is contained in:
Ethan Lee 2022-07-15 11:31:59 -04:00
parent fff34f6304
commit c5e408ae98
1 changed files with 50 additions and 10 deletions
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60
src/audio/directsound/SDL_directsound.c
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@ -29,6 +29,7 @@
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_directsound.h"
#include <mmreg.h>
#if HAVE_MMDEVICEAPI_H
#include "../../core/windows/SDL_immdevice.h"
#endif /* HAVE_MMDEVICEAPI_H */
@ -53,6 +54,9 @@ static fnDirectSoundEnumerateW pDirectSoundEnumerateW = NULL;
static fnDirectSoundCaptureCreate8 pDirectSoundCaptureCreate8 = NULL;
static fnDirectSoundCaptureEnumerateW pDirectSoundCaptureEnumerateW = NULL;
static const GUID SDL_KSDATAFORMAT_SUBTYPE_PCM = { 0x00000001, 0x0000, 0x0010,{ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 } };
static const GUID SDL_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = { 0x00000003, 0x0000, 0x0010,{ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 } };
static void
DSOUND_Unload(void)
{
@ -551,21 +555,57 @@ DSOUND_OpenDevice(_THIS, const char *devname)
(int) (DSBSIZE_MAX / numchunks));
} else {
int rc;
WAVEFORMATEX wfmt;
WAVEFORMATEXTENSIBLE wfmt;
SDL_zero(wfmt);
if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
wfmt.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
if (this->spec.channels > 2) {
wfmt.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wfmt.Format.cbSize = sizeof(wfmt) - sizeof(WAVEFORMATEX);
if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
SDL_memcpy(&wfmt.SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, sizeof(GUID));
} else {
wfmt.SubFormat = SDL_KSDATAFORMAT_SUBTYPE_PCM;
SDL_memcpy(&wfmt.SubFormat, &SDL_KSDATAFORMAT_SUBTYPE_PCM, sizeof(GUID));
}
wfmt.Samples.wValidBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
switch (this->spec.channels)
{
case 3: /* 3.0 (or 2.1) */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER;
break;
case 4: /* 4.0 */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
break;
case 5: /* 5.0 (or 4.1) */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
break;
case 6: /* 5.1 */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT;
break;
case 7: /* 6.1 */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | SPEAKER_BACK_CENTER;
break;
case 8: /* 7.1 */
wfmt.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT;
break;
default:
SDL_assert(0 && "Unsupported channel count!");
break;
}
} else if (SDL_AUDIO_ISFLOAT(this->spec.format)) {
wfmt.Format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
} else {
wfmt.wFormatTag = WAVE_FORMAT_PCM;
wfmt.Format.wFormatTag = WAVE_FORMAT_PCM;
}
wfmt.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
wfmt.nChannels = this->spec.channels;
wfmt.nSamplesPerSec = this->spec.freq;
wfmt.nBlockAlign = wfmt.nChannels * (wfmt.wBitsPerSample / 8);
wfmt.nAvgBytesPerSec = wfmt.nSamplesPerSec * wfmt.nBlockAlign;
wfmt.Format.wBitsPerSample = SDL_AUDIO_BITSIZE(this->spec.format);
wfmt.Format.nChannels = this->spec.channels;
wfmt.Format.nSamplesPerSec = this->spec.freq;
wfmt.Format.nBlockAlign = wfmt.Format.nChannels * (wfmt.Format.wBitsPerSample / 8);
wfmt.Format.nAvgBytesPerSec = wfmt.Format.nSamplesPerSec * wfmt.Format.nBlockAlign;
rc = iscapture ? CreateCaptureBuffer(this, bufsize, &wfmt) : CreateSecondary(this, bufsize, &wfmt);
rc = iscapture ? CreateCaptureBuffer(this, bufsize, (WAVEFORMATEX*) &wfmt) : CreateSecondary(this, bufsize, (WAVEFORMATEX*) &wfmt);
if (rc == 0) {
this->hidden->num_buffers = numchunks;
break;