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SDL2 backend: Allow changes to channels and format

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This commit is contained in:
Jan Niklas Hasse
2018-03-08 20:26:31 +01:00
parent ef2b813776
commit 0af075b5ff
1 changed files with 22 additions and 1 deletions
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Alc/backends/sdl2.c
+22 -1
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@@ -100,12 +100,33 @@ static ALCenum ALCsdl2Backend_open(ALCsdl2Backend *self, const ALCchar *name)
if (name && strcmp(name, defaultDeviceName) == 0)
name = NULL; // Passing NULL to SDL_OpenAudioDevice is special and will NOT select the first
// device in the list.
self->deviceID = SDL_OpenAudioDevice(name, 0, &want, &have, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE);
self->deviceID = SDL_OpenAudioDevice(name, 0, &want, &have, SDL_AUDIO_ALLOW_ANY_CHANGE);
if(want.freq != have.freq)
{
TRACE("Frequency changed by SDL2\n");
device->Frequency = have.freq;
}
if(have.channels == 1)
device->FmtChans = DevFmtMono;
else if(have.channels == 2)
device->FmtChans = DevFmtStereo;
else
{
ERR("Invalid number of channels\n");
return ALC_INVALID_VALUE;
}
switch(have.format)
{
case AUDIO_U8: device->FmtType = DevFmtUByte; break;
case AUDIO_S8: device->FmtType = DevFmtByte; break;
case AUDIO_U16SYS: device->FmtType = DevFmtUShort; break;
case AUDIO_S16SYS: device->FmtType = DevFmtShort; break;
case AUDIO_S32SYS: device->FmtType = DevFmtInt; break;
case AUDIO_F32SYS: device->FmtType = DevFmtFloat; break;
default:
ERR("Unsupported format\n");
return ALC_INVALID_VALUE;
}
if(self->deviceID == 0) {
ERR("Could not open device\n");
return ALC_INVALID_VALUE;