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WM_CAP_GET_AUDIOFORMAT
The WM_CAP_GET_AUDIOFORMAT message obtains the audio format or the size of the
audio format. You can send this message explicitly or by using the capGetAudioFormat and capGetAudioFormatSize macros.
WM_CAP_GET_AUDIOFORMAT
wParam = (WPARAM) (wSize);
lParam = (LPARAM) (LPVOID) (LPWAVEFORMATEX) (psAudioFormat);
Parameters
wSize
Size, in bytes, of the structure referenced by s.
psAudioFormat
Address of a WAVEFORMATEX structure, or NULL. If the value is NULL, the size, in bytes, required to
hold the WAVEFORMATEX structure is returned.
Return Values
Returns the size, in bytes, of the audio format.
Remarks
Because compressed audio formats vary in size requirements applications must
first retrieve the size, then allocate memory, and finally request the audio
format data.
See Also
capGetAudioFormat, capGetAudioFormatSize, WAVEFORMATEX
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