mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

7
pngpriv.h
View File

@@ -1442,8 +1442,8 @@ PNG_INTERNAL_FUNCTION(int,png_colorspace_set_sRGB,(png_const_structrp png_ptr,
#ifdef PNG_iCCP_SUPPORTED
PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_const_charp name,
png_uint_32 profile_length, png_const_bytep profile, int preferred,
int color_type), PNG_EMPTY);
png_uint_32 profile_length, png_const_bytep profile, int color_type),
PNG_EMPTY);
/* The 'name' is used for information only */
/* Routines for checking parts of an ICC profile. */
@@ -1461,8 +1461,7 @@ PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr,
png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY);
PNG_INTERNAL_FUNCTION(int,png_icc_set_gAMA_and_cHRM,(
png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_const_bytep profile, uLong adler, int preferred),
PNG_EMPTY);
png_const_charp name, png_const_bytep profile, uLong adler), PNG_EMPTY);
/* 'adler' is the Adler32 checksum of the uncompressed profile data. It may
* be zero to indicate that it is not available. It is used, if provided,
* as a fast check on the profile when checking to see if it is sRGB. The