ZBAR库

1./** read back an image in the format written by zbar_image_write()
 * @note TBD
 */
extern zbar_image_t *zbar_image_read(char *filename);

/** set config for indicated symbology (0 for all) to specified value.
 * @returns 0 for success, non-0 for failure (config does not apply to
 * specified symbology, or value out of range)
 * @see zbar_decoder_set_config()
 * @since 0.4
 */
extern int zbar_image_scanner_set_config(zbar_image_scanner_t *scanner,
                                         zbar_symbol_type_t symbology,
                                         zbar_config_t config,
                                         int value);

enum zbar_symbol_type_t 
decoded symbol type. 

Enumerator: 
ZBAR_NONE 
no symbol decoded 
ZBAR_PARTIAL 
intermediate status 
ZBAR_EAN8 
EAN-8. 
ZBAR_UPCE 
UPC-E. 
ZBAR_ISBN10 
ISBN-10 (from EAN-13). 

Since:
0.4 
ZBAR_UPCA 
UPC-A. 
ZBAR_EAN13 
EAN-13. 
ZBAR_ISBN13 
ISBN-13 (from EAN-13). 

Since:
0.4 
ZBAR_I25 
Interleaved 2 of 5. 

Since:
0.4 
ZBAR_CODE39 
Code 39. 

Since:
0.4 
ZBAR_PDF417 
PDF417. 

Since:
0.6 
ZBAR_QRCODE 
QR Code. 

Since:
0.10 
ZBAR_CODE128 
Code 128. 
ZBAR_SYMBOL 
mask for base symbol type 
ZBAR_ADDON2 
2-digit add-on flag 
ZBAR_ADDON5 
5-digit add-on flag 
ZBAR_ADDON 
add-on flag mask