ProjectsJPGalleg

JPGalleg is a small addon for Allegro that adds JPG images handling capabilities to the library. It is standalone, in that it doesn't require external packages; the library weights only 40K and allows you to load baseline and progressive JPGs, and to save baseline JPGs. Full integration with Allegro is provided, so you can use load_bitmap() and save_bitmap() on JPG files as if they were natively supported by the lib. The package comes with full sources, documentation and examples, plus a Grabber plugin so you can easily manage JPGs in your datafiles.

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What's new:

	Now directly works on and returns a 24 bit image when dealing with truecolor JPGs, instead of using an intermediate 32 bpp buffer New faster YCbCr <--> RGB MMX routines Refactored I/O subsystem, now always works in memory internally Optimized bit stream fetching resulting in big performance bump Reduced memory footprint Fixed a possible memory leak in the decoder
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	Changed the decoder IDCT algorithm to AAN, ensuring faster decoding Added an experimental MMX IDCT routine Small optimizations on other parts of the decoder Fixed a bug in the decoder not recognizing some EXIF images Tightened a bit the encoder code Reworked build system to use different target directories on different platforms Added a small benchmark utility
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	Fixed output colors bug when decoding JPGs while in 32 bits mode Small optimization to the decoder Refactored encoder code, enhanced compactness Added progress callback functionality to both decoder and encoder Enhanced errors reporting Reworked encoder quantization resulting in big output size reduction at the same quality; also changed the quality curve formula Made ex5 to report expected size of file when saving JPGs and to show progress when loading/saving Added a license
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