189   PngHandler png_handler(name);  in res_create_display_surface()  local
190   if (!png_handler) return png_handler.error_code();  in res_create_display_surface()
192   png_structp png_ptr = png_handler.png_ptr();  in res_create_display_surface()
193   png_uint_32 width = png_handler.width();  in res_create_display_surface()
194   png_uint_32 height = png_handler.height();  in res_create_display_surface()
210                        png_handler.channels(), width);  in res_create_display_surface()
223   PngHandler png_handler(name);  in res_create_multi_display_surface()  local
224   if (!png_handler) return png_handler.error_code();  in res_create_multi_display_surface()
226   png_structp png_ptr = png_handler.png_ptr();  in res_create_multi_display_surface()
227   png_uint_32 width = png_handler.width();  in res_create_multi_display_surface()
228   png_uint_32 height = png_handler.height();  in res_create_multi_display_surface()
234   if (png_get_text(png_ptr, png_handler.info_ptr(), &text, &num_text)) {  in res_create_multi_display_surface()
283     TransformRgbToDraw(p_row.data(), out_row, png_handler.channels(), width);  in res_create_multi_display_surface()
303   PngHandler png_handler(name);  in res_create_alpha_surface()  local
304   if (!png_handler) return png_handler.error_code();  in res_create_alpha_surface()
306   if (png_handler.channels() != 1) {  in res_create_alpha_surface()
310   png_structp png_ptr = png_handler.png_ptr();  in res_create_alpha_surface()
311   png_uint_32 width = png_handler.width();  in res_create_alpha_surface()
312   png_uint_32 height = png_handler.height();  in res_create_alpha_surface()
367   PngHandler png_handler(png_name);  in get_locales_in_png()  local
368   if (!png_handler) {  in get_locales_in_png()
369     printf("Failed to open %s, error: %d\n", png_name.c_str(), png_handler.error_code());  in get_locales_in_png()
372   if (png_handler.channels() != 1) {  in get_locales_in_png()
373     printf("Expect input png to have 1 data channel, this file has %d\n", png_handler.channels());  in get_locales_in_png()
378   std::vector<uint8_t> row(png_handler.width());  in get_locales_in_png()
379   for (png_uint_32 y = 0; y < png_handler.height(); ++y) {  in get_locales_in_png()
380     png_read_row(png_handler.png_ptr(), row.data(), nullptr);  in get_locales_in_png()
387       png_read_row(png_handler.png_ptr(), row.data(), nullptr);  in get_locales_in_png()
402   PngHandler png_handler(name);  in res_create_localized_alpha_surface()  local
403   if (!png_handler) return png_handler.error_code();  in res_create_localized_alpha_surface()
405   if (png_handler.channels() != 1) {  in res_create_localized_alpha_surface()
409   png_structp png_ptr = png_handler.png_ptr();  in res_create_localized_alpha_surface()
410   png_uint_32 width = png_handler.width();  in res_create_localized_alpha_surface()
411   png_uint_32 height = png_handler.height();  in res_create_localized_alpha_surface()