png_get_pixel_aspect_ratio 183 third_party/libpng/pngget.c png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr) png_get_pixel_aspect_ratio 244 third_party/libpng/pngusr.h #define png_get_pixel_aspect_ratio wk_png_get_pixel_aspect_ratio