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November 2006
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2006.12.01 11:00 "Re: ITULAB JPEG support", by Leridant Jean-yves
> In any case can we not allow dependence on the JPEGCOLORMODE rat's nest of > hacks to grow, and that's exactly what we would be doing if we allow the > support for ITULAB to be tied in with LibJpeg. More and by hell, I don't understand what color process different of YCbCr (in turn nothing), a LibJpeg might apply to ICCLAB or ITULAB ... However, I perfectly agree with something like trashing-out whatever color space conversions below tif_jpeg entry point, (note that now, anyone can process color conversion as he want, and then feed codec with it as YCbCr) but: elimination of the horrible JPEGCOLORMODE pseudo-tag (and real abomination) will not solve ***the*** problem: the demented xxx-subsampling tag, that a not too much brain-damaged libtiff would understand for jpeg files, as a parameter in the in the same sense that quality factor on the compression side, and override to (1,1) on the decompression side (in some way as strip_chopping). -- Jean-Yves Le Ridant