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Write compression options

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More sophisticated defaulting which helps significantly for some files along
with code to make it easier to control the compression defaults and to make the
settings honor the API calls the application makes (previously low windowBits
settings would get reset to higher values.)

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2016-02-02 05:58:38 -08:00
parent 5e88e9c396
commit af9ad9545d
6 changed files with 381 additions and 351 deletions
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2
scripts/pnglibconf.h.prebuilt
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@@ -213,7 +213,7 @@
#define PNG_ZLIB_VERNUM 0
#define PNG_Z_DEFAULT_COMPRESSION (-1)
#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
#define PNG_Z_DEFAULT_STRATEGY 1
#define PNG_Z_DEFAULT_STRATEGY 0
#define PNG_sCAL_PRECISION 5
#define PNG_sRGB_PROFILE_CHECKS 2
/* end of settings */