QuickTime 4 Reference

Decompressing Bands

Your image decompressor component must implement the ImageCodecBeginBand and ImageCodecDrawBand functions for decompressing bands. It can also implement the ImageCodecEndBand function to be information that decompression of a band is complete. It receives these calls from the base image decompressor when decompression of either a complete frame or an individual band needs to be performed.

Implementing ImageCodecBeginBand

Implementing ImageCodecDrawBand

Implementing ImageCodecEndBand