png_set_swap     1751 third_party/libpng/png.h extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr));
png_set_swap     1468 third_party/libpng/pngread.c       png_set_swap(png_ptr);
png_set_swap     1565 third_party/libpng/pngwrite.c       png_set_swap(png_ptr);