Lines Matching refs:signature
880 png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng from start of file */
1632 * signature, and non-zero otherwise. Having num_to_check == 0 or
1638 /* Simple signature checking function. This is the same as calling
2397 /* Returns pointer to signature string read from PNG header */
3108 /* Place to hold the signature string for a PNG file. */
3311 /* Simple function to write the signature */
