png_text_compress 829 third_party/libpng/pngwutil.c profile_len = png_text_compress(png_ptr, profile, png_text_compress 1427 third_party/libpng/pngwutil.c text_len = png_text_compress(png_ptr, text, text_len, compression, png_text_compress 1492 third_party/libpng/pngwutil.c text_len = png_text_compress(png_ptr, text, text_len, compression-2,