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Certain audio drivers, like the RME "Pro" Audio driver, have resampling quality issues when using WASAPI.

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We'll use SDL's resampling algorithm so we have consistent quality between platforms and drivers.

Fixes https://github.com/libsdl-org/SDL/issues/5538
This commit is contained in:
Sam Lantinga 2022-04-18 09:20:47 -07:00
parent 254fcc90eb
commit 9e264b921b
1 changed files with 4 additions and 0 deletions
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4
src/audio/wasapi/SDL_wasapi.c
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@ -558,12 +558,16 @@ WASAPI_PrepDevice(_THIS, const SDL_bool updatestream)
return WIN_SetErrorFromHRESULT("WASAPI can't determine minimum device period", ret);
}
#if 1 /* we're getting reports that WASAPI's resampler introduces distortions, so it's disabled for now. --ryan. */
this->spec.freq = waveformat->nSamplesPerSec; /* force sampling rate so our resampler kicks in, if necessary. */
#else
/* favor WASAPI's resampler over our own */
if (this->spec.freq != waveformat->nSamplesPerSec) {
streamflags |= (AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY);
waveformat->nSamplesPerSec = this->spec.freq;
waveformat->nAvgBytesPerSec = waveformat->nSamplesPerSec * waveformat->nChannels * (waveformat->wBitsPerSample / 8);
}
#endif
streamflags |= AUDCLNT_STREAMFLAGS_EVENTCALLBACK;
ret = IAudioClient_Initialize(client, sharemode, streamflags, 0, 0, waveformat, NULL);