PNG_NO_FILTERS 1107 pngwrite.c if (png_ptr->do_filter == PNG_NO_FILTERS) PNG_NO_FILTERS 2270 pngwrite.c png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, PNG_NO_FILTERS); PNG_NO_FILTERS 905 pngwutil.c if ((png_ptr->do_filter) == PNG_NO_FILTERS)