Starts consumption and processing of audio by the voice. Delivers the result to any connected submix or mastering voices, or to the output device.
HRESULT Start( UINT32 Flags X2DEFAULT, UINT32 OperationSet X2DEFAULT );
Returns S_OK if successful, an error code otherwise. See XAudio2 Error Codes for descriptions of XAudio2 specific error codes.
If the XAudio2 engine is stopped, the voice stops running. However, it remains in the started state, so that it starts running again as soon as the engine starts.
When first created, source voices are in the stopped state. Submix and mastering voices are in the started state.
After Start is called it has no further effect if called again before IXAudio2SourceVoice::Stop is called. In addition multiple calls to Start without matching calls to IXAudio2SourceVoice::Stop will result in warning messages in debug builds.