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[libpng16] Improved ICC profile handling including cHRM chunk generation and

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fixed Cygwin+MSVC build errors. The ICC profile handling now includes more
checking.  Several errors that caused rejection of the profile are now
handled with a warning in such a way that the invalid profiles will be
read by default in release (but not pre-RC) builds but will not be
written by default.  The easy part of handling a cHRM chunk is written,
where the ICC profile contains the required data.  The more difficult
part plus guessing a gAMA value requires code to pass selected RGB values
through the profile.
This commit is contained in:
John Bowler
2012-09-04 11:19:00 -05:00
committed by Glenn Randers-Pehrson
parent 53f7051b1b
commit b98681b49a
22 changed files with 1597 additions and 177 deletions
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3
pngrutil.c
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@@ -1495,8 +1495,7 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
*/
ok = png_icc_set_gAMA_and_cHRM(png_ptr,
&png_ptr->colorspace, keyword, profile,
png_ptr->zstream.adler,
0/*prefer explicit gAMA/cHRM*/);
png_ptr->zstream.adler);
/* Steal the profile for info_ptr. */
if (ok && info_ptr != NULL)