| 4948 | //----------------------------------------------------------------------------- |
| 4949 | |
| 4950 | void RtApiWasapi::wasapiThread() |
| 4951 | { |
| 4952 | // as this is a new thread, we must CoInitialize it |
| 4953 | CoInitialize( NULL ); |
| 4954 | |
| 4955 | HRESULT hr; |
| 4956 | |
| 4957 | IAudioClient* captureAudioClient = ( ( WasapiHandle* ) stream_.apiHandle )->captureAudioClient; |
| 4958 | IAudioClient* renderAudioClient = ( ( WasapiHandle* ) stream_.apiHandle )->renderAudioClient; |
| 4959 | IAudioCaptureClient* captureClient = ( ( WasapiHandle* ) stream_.apiHandle )->captureClient; |
| 4960 | IAudioRenderClient* renderClient = ( ( WasapiHandle* ) stream_.apiHandle )->renderClient; |
| 4961 | HANDLE captureEvent = ( ( WasapiHandle* ) stream_.apiHandle )->captureEvent; |
| 4962 | HANDLE renderEvent = ( ( WasapiHandle* ) stream_.apiHandle )->renderEvent; |
| 4963 | |
| 4964 | WAVEFORMATEX* captureFormat = NULL; |
| 4965 | WAVEFORMATEX* renderFormat = NULL; |
| 4966 | float captureSrRatio = 0.0f; |
| 4967 | float renderSrRatio = 0.0f; |
| 4968 | WasapiBuffer captureBuffer; |
| 4969 | WasapiBuffer renderBuffer; |
| 4970 | WasapiResampler* captureResampler = NULL; |
| 4971 | WasapiResampler* renderResampler = NULL; |
| 4972 | |
| 4973 | // declare local stream variables |
| 4974 | RtAudioCallback callback = ( RtAudioCallback ) stream_.callbackInfo.callback; |
| 4975 | BYTE* streamBuffer = NULL; |
| 4976 | DWORD captureFlags = 0; |
| 4977 | unsigned int bufferFrameCount = 0; |
| 4978 | unsigned int numFramesPadding = 0; |
| 4979 | unsigned int convBufferSize = 0; |
| 4980 | bool loopbackEnabled = stream_.device[INPUT] == stream_.device[OUTPUT]; |
| 4981 | bool callbackPushed = true; |
| 4982 | bool callbackPulled = false; |
| 4983 | bool callbackStopped = false; |
| 4984 | int callbackResult = 0; |
| 4985 | |
| 4986 | // convBuffer is used to store converted buffers between WASAPI and the user |
| 4987 | char* convBuffer = NULL; |
| 4988 | unsigned int convBuffSize = 0; |
| 4989 | unsigned int deviceBuffSize = 0; |
| 4990 | |
| 4991 | std::string errorText; |
| 4992 | RtAudioError::Type errorType = RtAudioError::DRIVER_ERROR; |
| 4993 | |
| 4994 | // Attempt to assign "Pro Audio" characteristic to thread |
| 4995 | HMODULE AvrtDll = LoadLibraryW( L"AVRT.dll" ); |
| 4996 | if ( AvrtDll ) { |
| 4997 | DWORD taskIndex = 0; |
| 4998 | TAvSetMmThreadCharacteristicsPtr AvSetMmThreadCharacteristicsPtr = |
| 4999 | ( TAvSetMmThreadCharacteristicsPtr ) (void(*)()) GetProcAddress( AvrtDll, "AvSetMmThreadCharacteristicsW" ); |
| 5000 | AvSetMmThreadCharacteristicsPtr( L"Pro Audio", &taskIndex ); |
| 5001 | FreeLibrary( AvrtDll ); |
| 5002 | } |
| 5003 | |
| 5004 | // start capture stream if applicable |
| 5005 | if ( captureAudioClient ) { |
| 5006 | hr = captureAudioClient->GetMixFormat( &captureFormat ); |
| 5007 | if ( FAILED( hr ) ) { |
no test coverage detected