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AVIStreamSampleSize macro

The AVIStreamRelease macro determines the size of the buffer needed to store one sample of information from a stream. The size corresponds to the sample at the position specified by lPos.

Syntax


HRESULT AVIStreamSampleSize(
    pavi,
    lPos,
    plSize
);

Parameters

pavi

Handle to an open stream.

lPos

Position of a sample in the stream.

plSize

Address to contain the buffer size.

Return value

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

AVIERR_BUFFERTOOSMALLThe buffer size was smaller than a single sample of data.
AVIERR_MEMORYThere was not enough memory to complete the read operation.
AVIERR_FILEREADA disk error occurred while reading the file.

 

Remarks

The AVIStreamSampleSize macro is defined as follows:



#define AVIStreamSampleSize(pavi, lPos, plSize) \ 
    AVIStreamRead(pavi, lPos, 1, NULL, 0, plSize, NULL) 


Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Vfw.h

See also

AVIFile Functions and Macros
AVIFile Macros

 

 

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