diff options
| -rw-r--r-- | Alc/mmdevapi.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/Alc/mmdevapi.c b/Alc/mmdevapi.c index 9feef4ad..39628c95 100644 --- a/Alc/mmdevapi.c +++ b/Alc/mmdevapi.c @@ -245,6 +245,8 @@ static ALCboolean MMDevApiResetPlayback(ALCdevice *device) MMDevApiData *data = device->ExtraData; WAVEFORMATEXTENSIBLE OutputType; WAVEFORMATEX *wfx = NULL; + REFERENCE_TIME def_per; + UINT32 buffer_len; HRESULT hr; hr = IAudioClient_GetMixFormat(data->client, &wfx); @@ -458,10 +460,28 @@ static ALCboolean MMDevApiResetPlayback(ALCdevice *device) return ALC_FALSE; } + hr = IAudioClient_GetDevicePeriod(data->client, &def_per, NULL); + if(SUCCEEDED(hr)) + hr = IAudioClient_GetBufferSize(data->client, &buffer_len); + if(FAILED(hr)) + { + AL_PRINT("Failed to get audio buffer info: 0x%08lx\n", hr); + return ALC_FALSE; + } + + device->NumUpdates = (ALuint)((REFERENCE_TIME)buffer_len * 10000000 / + device->Frequency / def_per); + if(device->NumUpdates <= 1) + { + device->NumUpdates = 1; + AL_PRINT("Audio client returned default_period > buffer_len/2; expect break up\n"); + } + device->UpdateSize = buffer_len / device->NumUpdates; + hr = IAudioClient_Start(data->client); if(FAILED(hr)) { - AL_PRINT("Failed to start audio client\n"); + AL_PRINT("Failed to start audio client: 0x%08lx\n", hr); return ALC_FALSE; } |