AVIStreamPrevKeyFrame
The AVIStreamPrevKeyFrame
macro locates the key frame that precedes a specified position in a stream.
AVIStreamPrevKeyFrame(
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pavi, |
|
|
lPos |
|
|
); |
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Parameters
pavi
Handle of an
open stream.
lPos
Starting
position to search in the stream.
Return Values
Returns the
position of the key frame if successful or - 1 otherwise.
Remarks
The search
performed by this macro does not include the frame at the specified position.
The AVIStreamPrevKeyFrame
macro is defined as follows:
#define AVIStreamPrevKeyFrame(pavi, lPos) \
AVIStreamFindSample(pavi, lPos - 1, FIND_PREV | FIND_KEY)