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92e8581f12
This adds APIs to get/set the two remaining new PNG-v3 colour space chunks. The mDCV API matches that of cHRM. Both chunks support floating point APIs (all values in the two chunks are real numbers). Both chunks have a new encoded type, a four-digit-precision fixed-point number, which cannot be represented in the existing `png_fixed_point` type, so a `png_uint_32` is used. Test examples for cICP, cLLI and mDCV are now in pngtest.png, and a necessary change to the pngunknown.c test program has been made to accomodate the additions. Reviewed-by: Cosmin Truta <ctruta@gmail.com> Signed-off-by: John Bowler <jbowler@acm.org> Signed-off-by: Cosmin Truta <ctruta@gmail.com>
External contributions to libpng -------------------------------- This "contrib" directory contains contributions which are not necessarily under the libpng license, although all are open source. They are not part of libpng proper and are not used for building the library, although some are used for testing the library via "make check".