AVIMakeCompressedStream

	Overview

	Group

	Quick Info

The AVIMakeCompressedStream function creates a compressed stream from an uncompressed stream and a compression filter, and returns the address of a pointer to the compressed stream. This function supports audio and video compression.

STDAPI AVIMakeCompressedStream(

PAVISTREAM * ppsCompressed,
PAVISTREAM psSource,
AVICOMPRESSOPTIONS * lpOptions,
CLSID * pclsidHandler
);

Parameters
ppsCompressed

Address to contain the compressed stream pointer.

psSource

Address of the stream to be compressed.

lpOptions

Address of a structure that identifies the type of compression to use and the options to apply. You can specify video compression by identifying an appropriate handler in the AVICOMPRESSOPTIONS structure. For audio compression, specify the compressed data format.

pclsidHandler

Address of a class identifier used to create the stream.

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

AVIERR_NOCOMPRESSOR	A suitable compressor cannot be found.
AVIERR_MEMORY	There is not enough memory to complete the operation.
AVIERR_UNSUPPORTED	Compression is not supported for this type of data. This error might be returned if you try to compress data that is not audio or video.

Remarks
Applications can read from or write to the compressed stream.