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
Handle of an open stream.
Position of a sample in the stream.
Address to contain the buffer size.
Returns zero if successful or an error otherwise. Possible error values
include the following:
||The buffer size was smaller than a single sample of data.
||There was not enough memory to complete the read operation.
||A disk error occurred while reading the file.
macro is defined as follows:
#define AVIStreamSampleSize(pavi, lPos, plSize) \
AVIStreamRead(pavi, lPos, 1, NULL, 0, plSize, NULL)
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