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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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4
pngwrite.c
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@@ -1396,11 +1396,11 @@ png_write_png(png_structrp png_ptr, png_inforp info_ptr,
"PNG_TRANSFORM_STRIP_FILLER: BEFORE+AFTER not supported");
/* Continue if ignored - this is the pre-1.6.10 behavior */
png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
png_set_filler_16(png_ptr, 0, PNG_FILLER_AFTER);
}
else if ((transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) != 0)
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
png_set_filler_16(png_ptr, 0, PNG_FILLER_BEFORE);
#else
png_app_error(png_ptr, "PNG_TRANSFORM_STRIP_FILLER not supported");
#endif