AVIStreamRead

The AVIStreamRead function reads audio, video or other data from a stream according to the stream type.

STDAPI AVIStreamRead(

Parameters
pavi

Handle of an open stream.

lStart

First sample to read.

lSamples

Number of samples to read. You can also specify the value AVISTREAMREAD_CONVENIENT to let the stream handler determine the number of samples to read.

lpBuffer

Address of a buffer to contain the data.

cbBuffer

Size, in bytes, of the buffer pointed to by lpBuffer.

plBytes

Address to contain the number of bytes of data written in the buffer referenced by lpBuffer. This value can be NULL.

plSamples

Address to contain the number of samples written in the buffer referenced by lpBuffer. This value can be NULL.

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

AVIERR_BUFFERTOOSMALL	The buffer size cbBuffer 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
If lpBuffer is NULL, this function does not read any data; it returns information about the size of data that would be read.

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