png_image_begin_read_from_file   36 contrib/examples/pngtopng.c       if (png_image_begin_read_from_file(&image, argv[1]))
png_image_begin_read_from_file 3078 contrib/libtests/pngstest.c          if (!png_image_begin_read_from_file(&image->image, image->file_name))
png_image_begin_read_from_file   55 example.c            if (png_image_begin_read_from_file(&image, argv[1]))
png_image_begin_read_from_file 3100 png.h          PNG_EXPORT(234, int, png_image_begin_read_from_file, (png_imagep image,