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waveInAddBuffer function (mmeapi.h)

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The waveInAddBuffer function sends an input buffer to the given waveform-audio input device. When the buffer is filled, the application is notified.

Syntax

MMRESULT waveInAddBuffer(
  HWAVEIN   hwi,
  LPWAVEHDR pwh,
  UINT      cbwh
);

Parameters

hwi

Handle to the waveform-audio input device.

pwh

Pointer to a WAVEHDR structure that identifies the buffer.

cbwh

Size, in bytes, of the WAVEHDR structure.

Return value

Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.

Return code Description
MMSYSERR_INVALHANDLE
 Specified device handle is invalid.
MMSYSERR_NODRIVER
 No device driver is present.
MMSYSERR_NOMEM
 Unable to allocate or lock memory.
WAVERR_UNPREPARED
 The buffer pointed to by the pwh parameter hasn't been prepared.

Remarks

When the buffer is filled, the WHDR_DONE bit is set in the dwFlags member of the WAVEHDR structure.

The buffer must be prepared with the waveInPrepareHeader function before it is passed to this function.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header mmeapi.h (include Windows.h)
Library Winmm.lib
DLL Winmm.dll

See also

Waveform Audio

Waveform Functions