John Bowler 92e8581f12 api(PNGv3): Add support for mDCV and cLLI ...

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>

2025-01-08 23:22:50 +02:00

8.6 KiB

91x69px

Raw Permalink History