tree a16ead2ccb61a6e1f11e707a34c2d83531da7306
parent 0546e4e579b197cd7a73dd7fc1b1c74e651164b4
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> 1339871188 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> 1339871188 -0500

[libpng16] Revised png_set_keep_unknown_chunks() so num_chunks < 0 means

ignore all unknown chunks and all known chunks except for IHDR, PLTE, tRNS,
IDAT, and IEND.  Previously it only meant ignore all unknown chunks, the
same as num_chunks == 0. Revised png_image_skip_unused_chunks() to
provide a list of chunks to be processed instead of a list of chunks to
ignore.  Revised contrib/gregbook/readpng2.c accordingly.