Lines Matching refs:signature
354 * here. The application can then have access to the signature bytes we
365 /* If we haven't checked all of the PNG signature bytes, do so now. */
371 png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
374 if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
377 png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
