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[libpng16] Reverted the fix of byte order in png_do_read_filler() with 16-bit

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input that was made in version 1.6.17beta01, to preserve legacy
behavior even though it was incorrect.  Instead, added new API
png_set_filter_16() and png_set_add_alpha_16() that set a flag to
make png_do_read_filter() interpret the filler bytes properly.
This commit is contained in:
Glenn Randers-Pehrson
2015-09-23 22:08:04 -05:00
parent d6eb4b71ac
commit efe4e5d10d
13 changed files with 141 additions and 65 deletions
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1
pngpriv.h
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@@ -599,6 +599,7 @@
#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000 /* Added to libpng-1.4.0 */
#define PNG_FLAG_APP_WARNINGS_WARN 0x200000 /* Added to libpng-1.6.0 */
#define PNG_FLAG_APP_ERRORS_WARN 0x400000 /* Added to libpng-1.6.0 */
#define PNG_FLAG_FILLER_16 0x800000 /* old filler byte order */
/* 0x800000 unused */
/* 0x1000000 unused */
/* 0x2000000 unused */