png_read_filter_row  830 pngpread.c              png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
png_read_filter_row 1193 pngpriv.h      PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop
png_read_filter_row  538 pngread.c               png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,