DMUS_APATH_SHARED_STEREOPLUSREVERB

Microsoft DirectX 9.0 SDK Update (Summer 2004)

^{DMUS_APATH_SHARED_STEREOPLUSREVERB}

This standard audiopath sets up buffers of type Reverb and Stereo.

The Stereo buffer is shared among multiple audiopaths. It is a sink-in buffer, meaning that it accepts data directly from the synthesizer, not from other buffers.

Applications can obtain an interface to the Stereo buffer by calling one of the GetObjectInPath methods with dwStage set to DMUS_PATH_BUFFER and dwBuffer set to 0.

The Reverb buffer is also a shared sink-in buffer. Unlike the Stereo buffer, it accepts a mono input from the synthesizer and converts the data to stereo format.

Applications can obtain an interface to the Reverb buffer by calling one of the GetObjectInPath methods with dwStage set to DMUS_PATH_BUFFER and dwBuffer set to 1.

The following example function retrieves an IDirectSoundFXWavesReverb8 interface to the DMO in the Reverb buffer on a default DMUS_APATH_SHARED_STEREOPLUSREVERB audiopath:

HRESULT GetDMO(IDirectMusicPerformance8* pPerf,IDirectSoundFXWavesReverb8** ppEffectDMO)
{
  IDirectMusicAudioPath8 * pAudioPath;
  HRESULT hr;
 
  hr = pPerf->GetDefaultAudioPath(&pAudioPath);
  if (SUCCEEDED(hr))
  {
    HRESULT hr = pAudioPath->GetObjectInPath(DMUS_PCHANNEL_ALL,
      DMUS_PATH_BUFFER_DMO, 1,
      GUID_All_Objects, 0, IID_IDirectSoundFXWavesReverb8,
      (LPVOID*) ppEffectDMO);
  }
  return hr;
}

See Also

• Standard Audiopaths

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© 2004 Microsoft Corporation. All rights reserved.