John Bowler fb1305faeb [libpng17] Support builds with unsupported PNG_TRANSFORM_* values. All of the ...

PNG_TRANSFORM_* values are always defined in png.h and, because they
are used for both read and write in some cases, it is not reliable
to #if out ones that are totally unsupported. This change adds error
detection in png_read_image() and png_write_image() to do a
png_app_error() if the app requests something that cannot be done
and it adds corresponding code to pngimage.c to handle such options
by not attempting to test them.

2014-02-05 20:13:19 -06:00

76 KiB

Raw Blame History

View Raw