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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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13
ANNOUNCE
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@@ -1,5 +1,5 @@
Libpng 1.6.0beta29 - September 1, 2012
Libpng 1.6.0beta29 - September 4, 2012
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@@ -482,7 +482,7 @@ Version 1.6.0beta28 [August 29, 2012]
contain the tags needed to process the PNG (tags all required by the ICC
spec). Removed unused PNG_STATIC from pngpriv.h.
Version 1.6.0beta29 [September 1, 2012]
Version 1.6.0beta29 [September 4, 2012]
Fixed the simplified API example programs and improved the error message
if the version field is not set.
Added contrib/examples/* to the *.zip and *.7z distributions.
@@ -494,6 +494,15 @@ Version 1.6.0beta29 [September 1, 2012]
where the length has not been extended to a multiple of 4, and pngtest
now intercepts all libpng errors, allowing the previously-introduced
"--strict test" on no warnings to actually work.
Improved ICC profile handling including cHRM chunk generation and 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.
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