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Decoder Interfaces

The following tables show the interfaces implemented by Windows Imaging Component (WIC) decoders, and the class diagram shows the inheritance hierarchy.

Container-Level Decoder Interfaces

Interface Responsibilities Implementation
IWICBitmapDecoder Container-level services Required
IWICBitmapCodecProgressNotification Progress notification & cancellation support Recommended
IWICMetadataBlockReader Metadata enumeration Optional (Required only for formats that support container-level metadata)

 

Frame-Level Decoder Interfaces

Interface Responsibilities Implementation
IWICBitmapFrameDecode Frame-level services Required
IWICMetadataBlockReader Metadata enumeration Required
IWICBitmapSourceTransform Native decoder transforms Recommended
IWICDevelopRaw Raw processing services Required for Raw formats only

 

wic interface inheritance hierarchy

Conceptual

Implementing a WIC-Enabled Decoder

Implementing IWICBitmapDecoder

How to Write a WIC-Enabled CODEC

Windows Imaging Component Overview