Commit db1dd7560e29e5017d8a1309ca16fdeade7560b8
2014-07-30T09:54:01
XAudio2: Use XAUDIO2_VOICE_NOSAMPLESPLAYED when possible. For versions of XAudio2 with an IXAudio2SourceVoice::GetState() that offers a flags parameter, we can use XAUDIO2_VOICE_NOSAMPLESPLAYED, since we don't need this information in our current calls. According to MSDN, this makes the the call about 3x faster.
diff --git a/src/audio/xaudio2/SDL_xaudio2.c b/src/audio/xaudio2/SDL_xaudio2.c
index a1a18df..abcbdfb 100644
--- a/src/audio/xaudio2/SDL_xaudio2.c
+++ b/src/audio/xaudio2/SDL_xaudio2.c
@@ -241,14 +241,14 @@ XAUDIO2_WaitDone(_THIS)
SDL_assert(!this->enabled); /* flag that stops playing. */
IXAudio2SourceVoice_Discontinuity(source);
#if SDL_XAUDIO2_WIN8
- IXAudio2SourceVoice_GetState(source, &state, 0);
+ IXAudio2SourceVoice_GetState(source, &state, XAUDIO2_VOICE_NOSAMPLESPLAYED);
#else
IXAudio2SourceVoice_GetState(source, &state);
#endif
while (state.BuffersQueued > 0) {
SDL_SemWait(this->hidden->semaphore);
#if SDL_XAUDIO2_WIN8
- IXAudio2SourceVoice_GetState(source, &state, 0);
+ IXAudio2SourceVoice_GetState(source, &state, XAUDIO2_VOICE_NOSAMPLESPLAYED);
#else
IXAudio2SourceVoice_GetState(source, &state);
#endif