SGGetCompressBuffer(IM: QC)

Inside Macintosh: QuickTime Components /

Chapter 6 - Sequence Grabber Channel Components / Sequence Grabber Channel Components Reference

Functions / Configuration Functions for Video Channel Components

SGGetCompressBuffer
The SGGetCompressBuffer function returns information about the filter buffer that the sequence grabber component has established for your video channel.
pascal ComponentResult SGGetCompressBuffer (SGChannel c, 
                                             short *depth, 
                                             Rect *compressSize);
c
Identifies the channel connection for this operation.
depth
Contains a pointer to a field that is to receive the pixel depth of the filter buffer. If your component is not filtering the input video data, set the returned value to 0.
compressSize
Contains a pointer to a rectangle structure that is to receive the dimensions of the filter buffer. If your component is not filtering the input video data, return an empty rectangle (all coordinates set to 0).

SEE ALSO
The sequence grabber component sets a filter buffer by calling the SGSetCompressBuffer function, which is described in the previous section.