Inside Macintosh: QuickTime Components

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Contents

• About Image Compressor Components 3
• Banding and Extending Images 5
• Spooling of Compressed Data 6
• Data Loading 6
• Data Unloading 9
• Compressing or Decompressing Images Asynchronously 9
• Progress Functions 11
• Using Image Compressor Components 11
• Performing Image Compression 11
• Choosing a Compressor 12
• Compressing a Horizontal Band of an Image 14
• Decompressing an Image 18
• Choosing a Decompressor 19
• Decompressing a Horizontal Band of an Image 23
• Image Compressor Components Reference 28
• Constants 28
• Image Compressor Component Capabilities 28
• Format of Compressed Data and Files 35
• Data Types 38
• The Compressor Capability Structure 38
• The Compression Parameters Structure 43
• The Decompression Parameters Structure 50
• Functions 57
• Direct Functions 58
• CDGetCodecInfo 58
• CDGetMaxCompressionSize 59
• CDGetCompressionTime 61
• CDGetSimilarity 62
• CDGetCompressedImageSize 64
• CDTrimImage 65
• CDCodecBusy 68
• Indirect Functions 69
• CDPreCompress 69
• CDBandCompress 70
• CDPreDecompress 70
• CDBandDecompress 71
• Image Compression Manager Utility Functions 72
• SetImageDescriptionExtension 72
• GetImageDescriptionExtension 73
• RemoveImageDescriptionExtension 75
• CountImageDescriptionExtensionType 76
• GetNextImageDescriptionExtensionType 76
• Summary of Image Compressor Components 78

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