AVIMakeCompressedStream
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(
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PAVISTREAM
* ppsCompressed, |
|
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PAVISTREAM
psSource, |
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AVICOMPRESSOPTIONS * lpOptions, |
|
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CLSID * pclsidHandler |
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); |
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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.
See Also