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Chapter 3 - Image Compression Manager / Image Compression Manager Reference

Image Compression Manager Functions

Changing Sequence-Compression Parameters

This section describes the functions that allow your application to manipulate the parameters that control sequence compression and to get information about memory that the compressor has allocated. You can use these functions during the sequence-compression process. Your application establishes the default value for most of these parameters with the CompressSequenceBegin function (described on page 3-100). Some of these functions deal with parameter values that cannot be set when starting a sequence.

You can determine the location of the previous image buffer used by the Image Compression Manager by calling the GetCSequencePrevBuffer function.

You can set a number of compression parameters. Use the SetCSequenceFlushProc function to assign a data-unloading function to the operation. You can set the rate at which the Image Compression Manager inserts key frames into the compressed sequence by calling the SetCSequenceKeyFrameRate function. You can set the frame against which the compressor compares a frame when performing temporal compression by calling the SetCSequencePrev function. Finally, you can control the quality of the compressed image by calling the SetCSequenceQuality function.

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Subtopics

SetCSequenceQuality

SetCSequenceKeyFrameRate

GetCSequenceKeyFrameRate

SetCSequenceFrameNumber

GetCSequenceFrameNumber

SetCSequencePrev

SetCSequenceFlushProc

GetCSequencePrevBuffer