AVIStreamPrevSample

The AVIStreamPrevSample macro locates the nearest nonempty sample that precedes a specified position in a stream.

AVIStreamPrevSample(
  pavi, 
  lPos  
);

Parameters

pavi

Handle to an open stream.

lPos

Starting position to search in the stream.

Return Values

Returns the sample position if successful or - 1 otherwise.

Remarks

The sample position returned does not include the sample specified by lPos.

The AVIStreamPrevSample macro is defined as follows:

#define AVIStreamPrevSample(pavi, lPos) \ 
    AVIStreamFindSample(pavi, lPos - 1, FIND_PREV | FIND_ANY) 

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Vfw.h.

See Also

AVIFile Functions and Macros, AVIFile Macros