kc3-lang/libpng

2012-08-09T21:17:56

[libpng16Cleanup of png_set_filler(). This function does very different things on read and write. In libpng 1.6 the two cases can be distinguished and considerable code cleanup, and extra error checking, is possible. This makes calls on the write side that have no effect be ignored with a png_app_error(), which can be disabled in the app using png_set_benign_errors(), and removes the spurious use of usr_channels on the read side.