PNG_FILTER_SUB   1626 3rdparty/libpng/png.h #define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \
PNG_FILTER_SUB   1051 3rdparty/libpng/pngwrite.c             png_ptr->do_filter = PNG_FILTER_SUB; break;
PNG_FILTER_SUB   1082 3rdparty/libpng/pngwrite.c          if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
PNG_FILTER_SUB   2039 3rdparty/libpng/pngwutil.c    if (png_ptr->do_filter & PNG_FILTER_SUB)
PNG_FILTER_SUB   2539 3rdparty/libpng/pngwutil.c    if (filter_to_do == PNG_FILTER_SUB)
PNG_FILTER_SUB   2560 3rdparty/libpng/pngwutil.c    else if (filter_to_do & PNG_FILTER_SUB)
PNG_FILTER_SUB    406 modules/imgcodecs/src/grfmt_png.cpp                         png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, PNG_FILTER_SUB);