Inside Macintosh: QuickTime Components /

Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Controlling Compressed Source Devices

VDGetImageDescription

The VDGetImageDescription function allows an application to retrieve an image description structure from a video digitizer.

pascal VideoDigitizerError VDGetImageDescription 
                           (VideoDigitizerComponent ci,  
                            ImageDescriptionHandle desc);

ci

Identifies the application's connection to the video digitizer component. An application obtains this value from the Component Manager's OpenComponent function.

desc

Specifies a handle. The video digitizer fills this handle with an Image Compression Manager image description structure containing information about the digitizer's current compression settings. The digitizer resizes the handle appropriately. It is the application's responsibility to dispose of this handle.

RESULT CODES

noErr	0	No error
digiUnimpErr	-2201	Function not supported

SEE ALSO

See the chapter "Image Compression Manager" in Inside Macintosh: QuickTime for a complete description of the image description structure.