ICLCodec: +Image Converter Library encoder/decoder plug-ins example

Description

ICLCodec demonstrates +how to implement encoder and decoder plug-ins for the Image Converter Library. +A decoder converts an image in a particular format into a CFbsBitmap object; +an encoder does the reverse. In the example, the Portable Network Graphics +(PNG) format is handled.

The program is an ECom plug-in that implements:

the decoder plug-in +interface CImageDecoderPlugin by the class CPngDecoder
the decoder data reader +interface CImageReadCodec by the class CPngReadCodec
the encoder plug-in +interface CImageEncoderPlugin by the class CPngEncoder
the encoder data writer +interface CImageWriteCodec by the class CPngWriteCodec

The PNG format allows data to be stored in a number of different +scanline formats (colour/grey-scale depths), so specialist classes are provided +to read and write these formats. Scanline reader classes are derived from CPngReadSubCodec; +writer classes from CPngWriteSubCodec.