AVIStreamSampleSize macro (vfw.h)

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

Type: HRESULT

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

AVIERR_BUFFERTOOSMALL	The buffer size was smaller than a single sample of data.
AVIERR_MEMORY	There was not enough memory to complete the read operation.
AVIERR_FILEREAD	A 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

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	vfw.h

See also

AVIFile Functions and Macros

AVIFile Macros