如何从 XAudio2 源语音中检索当前样本播放位置？

Question

我有一个 IXAudio2SourceVoice 正在播放提交的 XAUDIO2_BUFFER。我如何从这些样本中检索当前播放缓冲区中的播放位置？

感谢您的帮助！

Answer 1

只需使用IXAudio2SourceVoice::GetState:

    XAUDIO2_VOICE_STATE xstate;
#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8)
    voice->GetState( &xstate, 0 );
#else
    voice->GetState( &xstate );
#endif
if ( xstate.BuffersQueued > 0 )
{
    // xstate.SamplesPlayed
}

The reason GetState takes a flag in XAudio 2.8 or later is specifically so you can use XAUDIO2_VOICE_NOSAMPLESPLAYED to save the overhead of filling out the current SamplesPlayed value.

如何从 XAudio2 源语音中检索当前样本播放位置？

How do I retrieve the current sample play position from an XAudio2 source voice?

windows

directx

xaudio2