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The AVIStreamPrevSample macro locates the nearest nonempty sample that precedes a specified position in a stream.
Syntax
LONG AVIStreamPrevSample(
pavi,
l
);
Parameters
pavi
Handle to an open stream.
l
Starting position to search in the stream.
Return value
Type: LONG
Returns the sample position if successful or –1 otherwise.
Remarks
The sample position returned does not include the sample specified by l.
The AVIStreamPrevSample macro is defined as follows:
#define AVIStreamPrevSample(pavi, l) \
AVIStreamFindSample(pavi, l - 1, FIND_PREV | FIND_ANY)
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 |