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capWaveStreamCallback callback function

The capWaveStreamCallback function is the callback function used with streaming capture to optionally process buffers of audio data. The name capWaveStreamCallback is a placeholder for the application-supplied function name.

To set the callback, send the WM_CAP_SET_CALLBACK_WAVESTREAM message to the capture window or call the capSetCallbackOnWaveStream macro.

Syntax


LRESULT CALLBACK capWaveStreamCallback(
  HWND hWnd,
  LPWAVEHDR lpWHdr
);

Parameters

hWnd

Handle to the capture window associated with the callback function.

lpWHdr

Pointer to a WAVEHDR structure containing information about the captured audio data.

Remarks

The capture window calls a wave stream callback function when an audio buffer is marked done by the waveform-audio driver. When capturing to disk, this will precede the disk write operation.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Vfw.h

See also

Video Capture
Video Capture Functions

 

 

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