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WASAPI: Properly recover from overruns in duplex mode.

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This commit is contained in:
David Reid
2026-01-11 17:54:37 +10:00
parent 12256314a9
commit de3946c9ec
1 changed files with 28 additions and 5 deletions
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miniaudio.h
+28 -5
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@@ -24869,16 +24869,39 @@ static ma_result ma_device_step__wasapi(ma_device* pDevice, ma_blocking_mode blo
}
#endif
/* Overrun detection. */
if ((flags & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) != 0) {
/* Glitched. Maybe try some recovery system here? */
}
ma_device_handle_backend_data_callback(pDevice, NULL, pMappedBuffer, bufferSizeInFrames);
ma_IAudioCaptureClient_ReleaseBuffer(pDeviceStateWASAPI->pCaptureClient, bufferSizeInFrames);
/* Overrun detection. */
if ((flags & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) != 0) {
/*
Glitched. We need to drain the buffer, but only if we're in duplex mode. In normal capture mode,
the application is responsible for processing fast enough so we leave it to them. In duplex mode
however, the playback and capture devices should be in lockstep so we'll need to drain to get
the capture device back on track.
*/
if (deviceType == ma_device_type_duplex) {
for (;;) {
ma_uint32 packetFrames;
hr = ma_IAudioCaptureClient_GetNextPacketSize(pDeviceStateWASAPI->pCaptureClient, &packetFrames);
if (FAILED(hr) || packetFrames == 0) {
break;
}
hr = ma_IAudioCaptureClient_GetBuffer(pDeviceStateWASAPI->pCaptureClient, &pMappedBuffer, &bufferSizeInFrames, &flags, NULL, NULL);
if (FAILED(hr)) {
break;
}
ma_IAudioCaptureClient_ReleaseBuffer(pDeviceStateWASAPI->pCaptureClient, bufferSizeInFrames);
}
}
}
} else {
if (hr == MA_AUDCLNT_S_BUFFER_EMPTY || hr == MA_AUDCLNT_E_BUFFER_ERROR) {
/* No data available. */
ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] IAudioCaptureClient_GetBuffer() returned %s.", (hr == MA_AUDCLNT_E_BUFFER_ERROR) ? "AUDCLNT_E_BUFFER_ERROR" : "AUDCLNT_E_BUFFER_EMPTY");
} else if (hr == MA_AUDCLNT_E_DEVICE_INVALIDATED) {
ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[WASAPI] Capture device invalidated. Attempting reinitialization.");