summaryrefslogtreecommitdiff
path: root/ext/exif/exif.c
blob: 7f95ff43ea7cc9a2c41a912863ed70069c0e34c5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2014 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
   |          Marcus Boerger <helly@php.net>                              |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

/*  ToDos
 *
 * 	See if example images from http://www.exif.org have illegal
 * 		thumbnail sizes or if code is corrupt.
 * 	Create/Update exif headers.
 * 	Create/Remove/Update image thumbnails.
 */

/*  Security
 *
 *  At current time i do not see any security problems but a potential
 *  attacker could generate an image with recursive ifd pointers...(Marcus)
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "ext/standard/file.h"

#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#ifdef PHP_WIN32
# include "win32/php_stdint.h"
#endif

#if HAVE_EXIF

/* When EXIF_DEBUG is defined the module generates a lot of debug messages
 * that help understanding what is going on. This can and should be used
 * while extending the module as it shows if you are at the right position.
 * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
 */
#undef EXIF_DEBUG

#ifdef EXIF_DEBUG
#define EXIFERR_DC , const char *_file, size_t _line TSRMLS_DC
#define EXIFERR_CC , __FILE__, __LINE__ TSRMLS_CC
#else
#define EXIFERR_DC TSRMLS_DC
#define EXIFERR_CC TSRMLS_CC
#endif

#undef EXIF_JPEG2000

#include "php_exif.h"
#include <math.h>
#include "php_ini.h"
#include "ext/standard/php_string.h"
#include "ext/standard/php_image.h"
#include "ext/standard/info.h" 

/* needed for ssize_t definition */
#include <sys/types.h>

typedef unsigned char uchar;

#ifndef safe_emalloc
# define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
#endif
#ifndef safe_erealloc
# define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
#endif

#ifndef TRUE
#	define TRUE 1
#	define FALSE 0
#endif

#ifndef max
#	define max(a,b) ((a)>(b) ? (a) : (b))
#endif

#define EFREE_IF(ptr)	if (ptr) efree(ptr)

#define MAX_IFD_NESTING_LEVEL 100

/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
	ZEND_ARG_INFO(0, index)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
	ZEND_ARG_INFO(0, filename)
	ZEND_ARG_INFO(0, sections_needed)
	ZEND_ARG_INFO(0, sub_arrays)
	ZEND_ARG_INFO(0, read_thumbnail)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
	ZEND_ARG_INFO(0, filename)
	ZEND_ARG_INFO(1, width)
	ZEND_ARG_INFO(1, height)
	ZEND_ARG_INFO(1, imagetype)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
	ZEND_ARG_INFO(0, imagefile)
ZEND_END_ARG_INFO()

/* }}} */

/* {{{ exif_functions[]
 */
const zend_function_entry exif_functions[] = {
	PHP_FE(exif_read_data, arginfo_exif_read_data)
	PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
	PHP_FE(exif_tagname, arginfo_exif_tagname)
	PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
	PHP_FE(exif_imagetype, arginfo_exif_imagetype)
	PHP_FE_END
};
/* }}} */

#define EXIF_VERSION "1.4 $Id$"

/* {{{ PHP_MINFO_FUNCTION
 */
PHP_MINFO_FUNCTION(exif)
{
	php_info_print_table_start();
	php_info_print_table_row(2, "EXIF Support", "enabled");
	php_info_print_table_row(2, "EXIF Version", EXIF_VERSION);
	php_info_print_table_row(2, "Supported EXIF Version", "0220");
	php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
	php_info_print_table_end();
	DISPLAY_INI_ENTRIES();
}
/* }}} */

ZEND_BEGIN_MODULE_GLOBALS(exif)
	char * encode_unicode;
	char * decode_unicode_be;
	char * decode_unicode_le;
	char * encode_jis;
	char * decode_jis_be;
	char * decode_jis_le;
ZEND_END_MODULE_GLOBALS(exif) 

ZEND_DECLARE_MODULE_GLOBALS(exif)

#ifdef ZTS
#define EXIF_G(v) TSRMG(exif_globals_id, zend_exif_globals *, v)
#else
#define EXIF_G(v) (exif_globals.v)
#endif
 
/* {{{ PHP_INI
 */

ZEND_INI_MH(OnUpdateEncode)
{
	if (new_value && new_value_length) {
		const zend_encoding **return_list;
		size_t return_size;
		if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
	&return_list, &return_size, 0 TSRMLS_CC)) {
			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
			return FAILURE;
		}
		efree(return_list);
	}
	return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}

ZEND_INI_MH(OnUpdateDecode)
{
	if (new_value) {
		const zend_encoding **return_list;
		size_t return_size;
		if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length,
	&return_list, &return_size, 0 TSRMLS_CC)) {
			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
			return FAILURE;
		}
		efree(return_list);
	}
	return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}

PHP_INI_BEGIN()
    STD_PHP_INI_ENTRY("exif.encode_unicode",          "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode,    zend_exif_globals, exif_globals)
    STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE",     PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
    STD_PHP_INI_ENTRY("exif.decode_unicode_intel",    "UCS-2LE",     PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
    STD_PHP_INI_ENTRY("exif.encode_jis",              "",            PHP_INI_ALL, OnUpdateEncode, encode_jis,        zend_exif_globals, exif_globals)
    STD_PHP_INI_ENTRY("exif.decode_jis_motorola",     "JIS",         PHP_INI_ALL, OnUpdateDecode, decode_jis_be,     zend_exif_globals, exif_globals)
    STD_PHP_INI_ENTRY("exif.decode_jis_intel",        "JIS",         PHP_INI_ALL, OnUpdateDecode, decode_jis_le,     zend_exif_globals, exif_globals)
PHP_INI_END()
/* }}} */
 
/* {{{ PHP_GINIT_FUNCTION
 */
static PHP_GINIT_FUNCTION(exif)
{
	exif_globals->encode_unicode    = NULL;
	exif_globals->decode_unicode_be = NULL;
	exif_globals->decode_unicode_le = NULL;
	exif_globals->encode_jis        = NULL;
	exif_globals->decode_jis_be     = NULL;
	exif_globals->decode_jis_le     = NULL;
}
/* }}} */

/* {{{ PHP_MINIT_FUNCTION(exif)
   Get the size of an image as 4-element array */
PHP_MINIT_FUNCTION(exif)
{
	REGISTER_INI_ENTRIES();
	if (zend_hash_exists(&module_registry, "mbstring", sizeof("mbstring"))) {
		REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT); 
	} else {
		REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT); 
	}
	return SUCCESS;
}
/* }}} */

/* {{{ PHP_MSHUTDOWN_FUNCTION
 */
PHP_MSHUTDOWN_FUNCTION(exif)
{
	UNREGISTER_INI_ENTRIES();
	return SUCCESS;
}
/* }}} */

/* {{{ exif dependencies */
static const zend_module_dep exif_module_deps[] = {
	ZEND_MOD_REQUIRED("standard")
	ZEND_MOD_OPTIONAL("mbstring")
	ZEND_MOD_END
};
/* }}} */

/* {{{ exif_module_entry
 */
zend_module_entry exif_module_entry = {
	STANDARD_MODULE_HEADER_EX, NULL,
	exif_module_deps,
	"exif",
	exif_functions,
	PHP_MINIT(exif), 
	PHP_MSHUTDOWN(exif),
	NULL, NULL,
	PHP_MINFO(exif),
#if ZEND_MODULE_API_NO >= 20010901
	EXIF_VERSION,
#endif
#if ZEND_MODULE_API_NO >= 20060613
	PHP_MODULE_GLOBALS(exif),
	PHP_GINIT(exif),
	NULL,
	NULL,
	STANDARD_MODULE_PROPERTIES_EX
#else	
	STANDARD_MODULE_PROPERTIES
#endif
};
/* }}} */

#ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)
#endif

/* {{{ php_strnlen
 * get length of string if buffer if less than buffer size or buffer size */
static size_t php_strnlen(char* str, size_t maxlen) {
	size_t len = 0;

	if (str && maxlen && *str) {
		do {
			len++;
		} while (--maxlen && *(++str));
	}
	return len;
}
/* }}} */

/* {{{ error messages
*/
static const char * EXIF_ERROR_FILEEOF   = "Unexpected end of file reached";
static const char * EXIF_ERROR_CORRUPT   = "File structure corrupted";
static const char * EXIF_ERROR_THUMBEOF  = "Thumbnail goes IFD boundary or end of file reached";
static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";

#define EXIF_ERRLOG_FILEEOF(ImageInfo)    exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
#define EXIF_ERRLOG_CORRUPT(ImageInfo)    exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
#define EXIF_ERRLOG_THUMBEOF(ImageInfo)   exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
#define EXIF_ERRLOG_FSREALLOC(ImageInfo)  exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
/* }}} */

/* {{{ format description defines
   Describes format descriptor
*/
static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
#define NUM_FORMATS 13

#define TAG_FMT_BYTE       1
#define TAG_FMT_STRING     2
#define TAG_FMT_USHORT     3
#define TAG_FMT_ULONG      4
#define TAG_FMT_URATIONAL  5
#define TAG_FMT_SBYTE      6
#define TAG_FMT_UNDEFINED  7
#define TAG_FMT_SSHORT     8
#define TAG_FMT_SLONG      9
#define TAG_FMT_SRATIONAL 10
#define TAG_FMT_SINGLE    11
#define TAG_FMT_DOUBLE    12
#define TAG_FMT_IFD       13

#ifdef EXIF_DEBUG
static char *exif_get_tagformat(int format)
{
	switch(format) {
		case TAG_FMT_BYTE:      return "BYTE";
		case TAG_FMT_STRING:    return "STRING";
		case TAG_FMT_USHORT:    return "USHORT";
		case TAG_FMT_ULONG:     return "ULONG";
		case TAG_FMT_URATIONAL: return "URATIONAL";
		case TAG_FMT_SBYTE:     return "SBYTE";
		case TAG_FMT_UNDEFINED: return "UNDEFINED";
		case TAG_FMT_SSHORT:    return "SSHORT";
		case TAG_FMT_SLONG:     return "SLONG";
		case TAG_FMT_SRATIONAL: return "SRATIONAL";
		case TAG_FMT_SINGLE:    return "SINGLE";
		case TAG_FMT_DOUBLE:    return "DOUBLE";
		case TAG_FMT_IFD:       return "IFD";
	}
	return "*Illegal";
}
#endif

/* Describes tag values */
#define TAG_GPS_VERSION_ID              0x0000
#define TAG_GPS_LATITUDE_REF            0x0001
#define TAG_GPS_LATITUDE                0x0002
#define TAG_GPS_LONGITUDE_REF           0x0003
#define TAG_GPS_LONGITUDE               0x0004
#define TAG_GPS_ALTITUDE_REF            0x0005
#define TAG_GPS_ALTITUDE                0x0006
#define TAG_GPS_TIME_STAMP              0x0007
#define TAG_GPS_SATELLITES              0x0008
#define TAG_GPS_STATUS                  0x0009
#define TAG_GPS_MEASURE_MODE            0x000A
#define TAG_GPS_DOP                     0x000B
#define TAG_GPS_SPEED_REF               0x000C
#define TAG_GPS_SPEED                   0x000D
#define TAG_GPS_TRACK_REF               0x000E
#define TAG_GPS_TRACK                   0x000F
#define TAG_GPS_IMG_DIRECTION_REF       0x0010
#define TAG_GPS_IMG_DIRECTION           0x0011
#define TAG_GPS_MAP_DATUM               0x0012
#define TAG_GPS_DEST_LATITUDE_REF       0x0013
#define TAG_GPS_DEST_LATITUDE           0x0014
#define TAG_GPS_DEST_LONGITUDE_REF      0x0015
#define TAG_GPS_DEST_LONGITUDE          0x0016
#define TAG_GPS_DEST_BEARING_REF        0x0017
#define TAG_GPS_DEST_BEARING            0x0018
#define TAG_GPS_DEST_DISTANCE_REF       0x0019
#define TAG_GPS_DEST_DISTANCE           0x001A
#define TAG_GPS_PROCESSING_METHOD       0x001B
#define TAG_GPS_AREA_INFORMATION        0x001C
#define TAG_GPS_DATE_STAMP              0x001D
#define TAG_GPS_DIFFERENTIAL            0x001E
#define TAG_TIFF_COMMENT                0x00FE /* SHOUDLNT HAPPEN */
#define TAG_NEW_SUBFILE                 0x00FE /* New version of subfile tag */
#define TAG_SUBFILE_TYPE                0x00FF /* Old version of subfile tag */
#define TAG_IMAGEWIDTH                  0x0100
#define TAG_IMAGEHEIGHT                 0x0101
#define TAG_BITS_PER_SAMPLE             0x0102
#define TAG_COMPRESSION                 0x0103
#define TAG_PHOTOMETRIC_INTERPRETATION  0x0106
#define TAG_TRESHHOLDING                0x0107
#define TAG_CELL_WIDTH                  0x0108
#define TAG_CELL_HEIGHT                 0x0109
#define TAG_FILL_ORDER                  0x010A
#define TAG_DOCUMENT_NAME               0x010D
#define TAG_IMAGE_DESCRIPTION           0x010E
#define TAG_MAKE                        0x010F
#define TAG_MODEL                       0x0110
#define TAG_STRIP_OFFSETS               0x0111
#define TAG_ORIENTATION                 0x0112
#define TAG_SAMPLES_PER_PIXEL           0x0115
#define TAG_ROWS_PER_STRIP              0x0116
#define TAG_STRIP_BYTE_COUNTS           0x0117
#define TAG_MIN_SAMPPLE_VALUE           0x0118
#define TAG_MAX_SAMPLE_VALUE            0x0119
#define TAG_X_RESOLUTION                0x011A
#define TAG_Y_RESOLUTION                0x011B
#define TAG_PLANAR_CONFIGURATION        0x011C
#define TAG_PAGE_NAME                   0x011D
#define TAG_X_POSITION                  0x011E
#define TAG_Y_POSITION                  0x011F
#define TAG_FREE_OFFSETS                0x0120
#define TAG_FREE_BYTE_COUNTS            0x0121
#define TAG_GRAY_RESPONSE_UNIT          0x0122
#define TAG_GRAY_RESPONSE_CURVE         0x0123
#define TAG_RESOLUTION_UNIT             0x0128
#define TAG_PAGE_NUMBER                 0x0129
#define TAG_TRANSFER_FUNCTION           0x012D
#define TAG_SOFTWARE                    0x0131
#define TAG_DATETIME                    0x0132
#define TAG_ARTIST                      0x013B
#define TAG_HOST_COMPUTER               0x013C
#define TAG_PREDICTOR                   0x013D
#define TAG_WHITE_POINT                 0x013E
#define TAG_PRIMARY_CHROMATICITIES      0x013F
#define TAG_COLOR_MAP                   0x0140
#define TAG_HALFTONE_HINTS              0x0141
#define TAG_TILE_WIDTH                  0x0142
#define TAG_TILE_LENGTH                 0x0143
#define TAG_TILE_OFFSETS                0x0144
#define TAG_TILE_BYTE_COUNTS            0x0145
#define TAG_SUB_IFD                     0x014A
#define TAG_INK_SETMPUTER               0x014C
#define TAG_INK_NAMES                   0x014D
#define TAG_NUMBER_OF_INKS              0x014E
#define TAG_DOT_RANGE                   0x0150
#define TAG_TARGET_PRINTER              0x0151
#define TAG_EXTRA_SAMPLE                0x0152
#define TAG_SAMPLE_FORMAT               0x0153
#define TAG_S_MIN_SAMPLE_VALUE          0x0154
#define TAG_S_MAX_SAMPLE_VALUE          0x0155
#define TAG_TRANSFER_RANGE              0x0156
#define TAG_JPEG_TABLES                 0x015B
#define TAG_JPEG_PROC                   0x0200
#define TAG_JPEG_INTERCHANGE_FORMAT     0x0201
#define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
#define TAG_JPEG_RESTART_INTERVAL       0x0203
#define TAG_JPEG_LOSSLESS_PREDICTOR     0x0205
#define TAG_JPEG_POINT_TRANSFORMS       0x0206
#define TAG_JPEG_Q_TABLES               0x0207
#define TAG_JPEG_DC_TABLES              0x0208
#define TAG_JPEG_AC_TABLES              0x0209
#define TAG_YCC_COEFFICIENTS            0x0211
#define TAG_YCC_SUB_SAMPLING            0x0212
#define TAG_YCC_POSITIONING             0x0213
#define TAG_REFERENCE_BLACK_WHITE       0x0214
/* 0x0301 - 0x0302 */
/* 0x0320 */
/* 0x0343 */
/* 0x5001 - 0x501B */
/* 0x5021 - 0x503B */
/* 0x5090 - 0x5091 */
/* 0x5100 - 0x5101 */
/* 0x5110 - 0x5113 */
/* 0x80E3 - 0x80E6 */
/* 0x828d - 0x828F */
#define TAG_COPYRIGHT                   0x8298
#define TAG_EXPOSURETIME                0x829A
#define TAG_FNUMBER                     0x829D
#define TAG_EXIF_IFD_POINTER            0x8769
#define TAG_ICC_PROFILE                 0x8773
#define TAG_EXPOSURE_PROGRAM            0x8822
#define TAG_SPECTRAL_SENSITY            0x8824
#define TAG_GPS_IFD_POINTER             0x8825
#define TAG_ISOSPEED                    0x8827
#define TAG_OPTOELECTRIC_CONVERSION_F   0x8828
/* 0x8829 - 0x882b */
#define TAG_EXIFVERSION                 0x9000
#define TAG_DATE_TIME_ORIGINAL          0x9003
#define TAG_DATE_TIME_DIGITIZED         0x9004
#define TAG_COMPONENT_CONFIG            0x9101
#define TAG_COMPRESSED_BITS_PER_PIXEL   0x9102
#define TAG_SHUTTERSPEED                0x9201
#define TAG_APERTURE                    0x9202
#define TAG_BRIGHTNESS_VALUE            0x9203
#define TAG_EXPOSURE_BIAS_VALUE         0x9204
#define TAG_MAX_APERTURE                0x9205
#define TAG_SUBJECT_DISTANCE            0x9206
#define TAG_METRIC_MODULE               0x9207
#define TAG_LIGHT_SOURCE                0x9208
#define TAG_FLASH                       0x9209
#define TAG_FOCAL_LENGTH                0x920A
/* 0x920B - 0x920D */
/* 0x9211 - 0x9216 */
#define TAG_SUBJECT_AREA                0x9214
#define TAG_MAKER_NOTE                  0x927C
#define TAG_USERCOMMENT                 0x9286
#define TAG_SUB_SEC_TIME                0x9290
#define TAG_SUB_SEC_TIME_ORIGINAL       0x9291
#define TAG_SUB_SEC_TIME_DIGITIZED      0x9292
/* 0x923F */
/* 0x935C */
#define TAG_XP_TITLE                    0x9C9B
#define TAG_XP_COMMENTS                 0x9C9C
#define TAG_XP_AUTHOR                   0x9C9D
#define TAG_XP_KEYWORDS                 0x9C9E
#define TAG_XP_SUBJECT                  0x9C9F
#define TAG_FLASH_PIX_VERSION           0xA000
#define TAG_COLOR_SPACE                 0xA001
#define TAG_COMP_IMAGE_WIDTH            0xA002 /* compressed images only */
#define TAG_COMP_IMAGE_HEIGHT           0xA003
#define TAG_RELATED_SOUND_FILE          0xA004
#define TAG_INTEROP_IFD_POINTER         0xA005 /* IFD pointer */
#define TAG_FLASH_ENERGY                0xA20B
#define TAG_SPATIAL_FREQUENCY_RESPONSE  0xA20C
#define TAG_FOCALPLANE_X_RES            0xA20E
#define TAG_FOCALPLANE_Y_RES            0xA20F
#define TAG_FOCALPLANE_RESOLUTION_UNIT  0xA210
#define TAG_SUBJECT_LOCATION            0xA214
#define TAG_EXPOSURE_INDEX              0xA215
#define TAG_SENSING_METHOD              0xA217
#define TAG_FILE_SOURCE                 0xA300
#define TAG_SCENE_TYPE                  0xA301
#define TAG_CFA_PATTERN                 0xA302
#define TAG_CUSTOM_RENDERED             0xA401
#define TAG_EXPOSURE_MODE               0xA402
#define TAG_WHITE_BALANCE               0xA403
#define TAG_DIGITAL_ZOOM_RATIO          0xA404
#define TAG_FOCAL_LENGTH_IN_35_MM_FILM  0xA405
#define TAG_SCENE_CAPTURE_TYPE          0xA406
#define TAG_GAIN_CONTROL                0xA407
#define TAG_CONTRAST                    0xA408
#define TAG_SATURATION                  0xA409
#define TAG_SHARPNESS                   0xA40A
#define TAG_DEVICE_SETTING_DESCRIPTION  0xA40B
#define TAG_SUBJECT_DISTANCE_RANGE      0xA40C
#define TAG_IMAGE_UNIQUE_ID             0xA420

/* Olympus specific tags */
#define TAG_OLYMPUS_SPECIALMODE         0x0200
#define TAG_OLYMPUS_JPEGQUAL            0x0201
#define TAG_OLYMPUS_MACRO               0x0202
#define TAG_OLYMPUS_DIGIZOOM            0x0204
#define TAG_OLYMPUS_SOFTWARERELEASE     0x0207
#define TAG_OLYMPUS_PICTINFO            0x0208
#define TAG_OLYMPUS_CAMERAID            0x0209
/* end Olympus specific tags */

/* Internal */
#define TAG_NONE               			-1 /* note that -1 <> 0xFFFF */
#define TAG_COMPUTED_VALUE     			-2
#define TAG_END_OF_LIST                 0xFFFD

/* Values for TAG_PHOTOMETRIC_INTERPRETATION */
#define PMI_BLACK_IS_ZERO       0
#define PMI_WHITE_IS_ZERO       1
#define PMI_RGB          	    2
#define PMI_PALETTE_COLOR       3
#define PMI_TRANSPARENCY_MASK   4
#define PMI_SEPARATED           5
#define PMI_YCBCR               6
#define PMI_CIELAB              8

/* }}} */

/* {{{ TabTable[]
 */
typedef const struct {
	unsigned short Tag;
	char *Desc;
} tag_info_type;

typedef tag_info_type  tag_info_array[];
typedef tag_info_type  *tag_table_type;

#define TAG_TABLE_END \
  {TAG_NONE,           "No tag value"},\
  {TAG_COMPUTED_VALUE, "Computed value"},\
  {TAG_END_OF_LIST,    ""}  /* Important for exif_get_tagname() IF value != "" function result is != false */

static tag_info_array tag_table_IFD = {
  { 0x000B, "ACDComment"},
  { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
  { 0x00FF, "SubFile"},
  { 0x0100, "ImageWidth"},
  { 0x0101, "ImageLength"},
  { 0x0102, "BitsPerSample"},
  { 0x0103, "Compression"},
  { 0x0106, "PhotometricInterpretation"},
  { 0x010A, "FillOrder"},
  { 0x010D, "DocumentName"},
  { 0x010E, "ImageDescription"},
  { 0x010F, "Make"},
  { 0x0110, "Model"},
  { 0x0111, "StripOffsets"},
  { 0x0112, "Orientation"},
  { 0x0115, "SamplesPerPixel"},
  { 0x0116, "RowsPerStrip"},
  { 0x0117, "StripByteCounts"},
  { 0x0118, "MinSampleValue"},
  { 0x0119, "MaxSampleValue"},
  { 0x011A, "XResolution"},
  { 0x011B, "YResolution"},
  { 0x011C, "PlanarConfiguration"},
  { 0x011D, "PageName"},
  { 0x011E, "XPosition"},
  { 0x011F, "YPosition"},
  { 0x0120, "FreeOffsets"},
  { 0x0121, "FreeByteCounts"},
  { 0x0122, "GrayResponseUnit"},
  { 0x0123, "GrayResponseCurve"},
  { 0x0124, "T4Options"},
  { 0x0125, "T6Options"},
  { 0x0128, "ResolutionUnit"},
  { 0x0129, "PageNumber"},
  { 0x012D, "TransferFunction"},
  { 0x0131, "Software"},
  { 0x0132, "DateTime"},
  { 0x013B, "Artist"},
  { 0x013C, "HostComputer"},
  { 0x013D, "Predictor"},
  { 0x013E, "WhitePoint"},
  { 0x013F, "PrimaryChromaticities"},
  { 0x0140, "ColorMap"},
  { 0x0141, "HalfToneHints"},
  { 0x0142, "TileWidth"},
  { 0x0143, "TileLength"},
  { 0x0144, "TileOffsets"},
  { 0x0145, "TileByteCounts"},
  { 0x014A, "SubIFD"},
  { 0x014C, "InkSet"},
  { 0x014D, "InkNames"},
  { 0x014E, "NumberOfInks"},
  { 0x0150, "DotRange"},
  { 0x0151, "TargetPrinter"},
  { 0x0152, "ExtraSample"},
  { 0x0153, "SampleFormat"},
  { 0x0154, "SMinSampleValue"},
  { 0x0155, "SMaxSampleValue"},
  { 0x0156, "TransferRange"},
  { 0x0157, "ClipPath"},
  { 0x0158, "XClipPathUnits"},
  { 0x0159, "YClipPathUnits"},
  { 0x015A, "Indexed"},
  { 0x015B, "JPEGTables"},
  { 0x015F, "OPIProxy"},
  { 0x0200, "JPEGProc"},
  { 0x0201, "JPEGInterchangeFormat"},
  { 0x0202, "JPEGInterchangeFormatLength"},
  { 0x0203, "JPEGRestartInterval"},
  { 0x0205, "JPEGLosslessPredictors"},
  { 0x0206, "JPEGPointTransforms"},
  { 0x0207, "JPEGQTables"},
  { 0x0208, "JPEGDCTables"},
  { 0x0209, "JPEGACTables"},
  { 0x0211, "YCbCrCoefficients"},
  { 0x0212, "YCbCrSubSampling"},
  { 0x0213, "YCbCrPositioning"},
  { 0x0214, "ReferenceBlackWhite"},
  { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
  { 0x0301, "Gamma"}, 
  { 0x0302, "ICCProfileDescriptor"}, 
  { 0x0303, "SRGBRenderingIntent"}, 
  { 0x0320, "ImageTitle"}, 
  { 0x5001, "ResolutionXUnit"}, 
  { 0x5002, "ResolutionYUnit"}, 
  { 0x5003, "ResolutionXLengthUnit"}, 
  { 0x5004, "ResolutionYLengthUnit"}, 
  { 0x5005, "PrintFlags"}, 
  { 0x5006, "PrintFlagsVersion"}, 
  { 0x5007, "PrintFlagsCrop"}, 
  { 0x5008, "PrintFlagsBleedWidth"}, 
  { 0x5009, "PrintFlagsBleedWidthScale"}, 
  { 0x500A, "HalftoneLPI"}, 
  { 0x500B, "HalftoneLPIUnit"}, 
  { 0x500C, "HalftoneDegree"}, 
  { 0x500D, "HalftoneShape"}, 
  { 0x500E, "HalftoneMisc"}, 
  { 0x500F, "HalftoneScreen"}, 
  { 0x5010, "JPEGQuality"}, 
  { 0x5011, "GridSize"}, 
  { 0x5012, "ThumbnailFormat"}, 
  { 0x5013, "ThumbnailWidth"}, 
  { 0x5014, "ThumbnailHeight"}, 
  { 0x5015, "ThumbnailColorDepth"}, 
  { 0x5016, "ThumbnailPlanes"}, 
  { 0x5017, "ThumbnailRawBytes"}, 
  { 0x5018, "ThumbnailSize"}, 
  { 0x5019, "ThumbnailCompressedSize"}, 
  { 0x501A, "ColorTransferFunction"}, 
  { 0x501B, "ThumbnailData"}, 
  { 0x5020, "ThumbnailImageWidth"}, 
  { 0x5021, "ThumbnailImageHeight"}, 
  { 0x5022, "ThumbnailBitsPerSample"}, 
  { 0x5023, "ThumbnailCompression"}, 
  { 0x5024, "ThumbnailPhotometricInterp"}, 
  { 0x5025, "ThumbnailImageDescription"}, 
  { 0x5026, "ThumbnailEquipMake"}, 
  { 0x5027, "ThumbnailEquipModel"}, 
  { 0x5028, "ThumbnailStripOffsets"}, 
  { 0x5029, "ThumbnailOrientation"}, 
  { 0x502A, "ThumbnailSamplesPerPixel"}, 
  { 0x502B, "ThumbnailRowsPerStrip"}, 
  { 0x502C, "ThumbnailStripBytesCount"}, 
  { 0x502D, "ThumbnailResolutionX"}, 
  { 0x502E, "ThumbnailResolutionY"}, 
  { 0x502F, "ThumbnailPlanarConfig"}, 
  { 0x5030, "ThumbnailResolutionUnit"}, 
  { 0x5031, "ThumbnailTransferFunction"}, 
  { 0x5032, "ThumbnailSoftwareUsed"}, 
  { 0x5033, "ThumbnailDateTime"}, 
  { 0x5034, "ThumbnailArtist"}, 
  { 0x5035, "ThumbnailWhitePoint"}, 
  { 0x5036, "ThumbnailPrimaryChromaticities"}, 
  { 0x5037, "ThumbnailYCbCrCoefficients"}, 
  { 0x5038, "ThumbnailYCbCrSubsampling"}, 
  { 0x5039, "ThumbnailYCbCrPositioning"}, 
  { 0x503A, "ThumbnailRefBlackWhite"}, 
  { 0x503B, "ThumbnailCopyRight"}, 
  { 0x5090, "LuminanceTable"}, 
  { 0x5091, "ChrominanceTable"}, 
  { 0x5100, "FrameDelay"}, 
  { 0x5101, "LoopCount"}, 
  { 0x5110, "PixelUnit"}, 
  { 0x5111, "PixelPerUnitX"}, 
  { 0x5112, "PixelPerUnitY"}, 
  { 0x5113, "PaletteHistogram"}, 
  { 0x1000, "RelatedImageFileFormat"},
  { 0x800D, "ImageID"},
  { 0x80E3, "Matteing"},   /* obsoleted by ExtraSamples */
  { 0x80E4, "DataType"},   /* obsoleted by SampleFormat */
  { 0x80E5, "ImageDepth"},
  { 0x80E6, "TileDepth"},
  { 0x828D, "CFARepeatPatternDim"},
  { 0x828E, "CFAPattern"},
  { 0x828F, "BatteryLevel"},
  { 0x8298, "Copyright"},
  { 0x829A, "ExposureTime"},
  { 0x829D, "FNumber"},
  { 0x83BB, "IPTC/NAA"},
  { 0x84E3, "IT8RasterPadding"},
  { 0x84E5, "IT8ColorTable"},
  { 0x8649, "ImageResourceInformation"}, /* PhotoShop */
  { 0x8769, "Exif_IFD_Pointer"},
  { 0x8773, "ICC_Profile"},
  { 0x8822, "ExposureProgram"},
  { 0x8824, "SpectralSensity"},
  { 0x8828, "OECF"},
  { 0x8825, "GPS_IFD_Pointer"},
  { 0x8827, "ISOSpeedRatings"},
  { 0x8828, "OECF"},
  { 0x9000, "ExifVersion"},
  { 0x9003, "DateTimeOriginal"},
  { 0x9004, "DateTimeDigitized"},
  { 0x9101, "ComponentsConfiguration"},
  { 0x9102, "CompressedBitsPerPixel"},
  { 0x9201, "ShutterSpeedValue"},
  { 0x9202, "ApertureValue"},
  { 0x9203, "BrightnessValue"},
  { 0x9204, "ExposureBiasValue"},
  { 0x9205, "MaxApertureValue"},
  { 0x9206, "SubjectDistance"},
  { 0x9207, "MeteringMode"},
  { 0x9208, "LightSource"},
  { 0x9209, "Flash"},
  { 0x920A, "FocalLength"},
  { 0x920B, "FlashEnergy"},                 /* 0xA20B  in JPEG   */
  { 0x920C, "SpatialFrequencyResponse"},    /* 0xA20C    -  -    */
  { 0x920D, "Noise"},
  { 0x920E, "FocalPlaneXResolution"},       /* 0xA20E    -  -    */
  { 0x920F, "FocalPlaneYResolution"},       /* 0xA20F    -  -    */
  { 0x9210, "FocalPlaneResolutionUnit"},    /* 0xA210    -  -    */
  { 0x9211, "ImageNumber"},
  { 0x9212, "SecurityClassification"},
  { 0x9213, "ImageHistory"},
  { 0x9214, "SubjectLocation"},             /* 0xA214    -  -    */
  { 0x9215, "ExposureIndex"},               /* 0xA215    -  -    */
  { 0x9216, "TIFF/EPStandardID"},
  { 0x9217, "SensingMethod"},               /* 0xA217    -  -    */
  { 0x923F, "StoNits"},
  { 0x927C, "MakerNote"},
  { 0x9286, "UserComment"},
  { 0x9290, "SubSecTime"},
  { 0x9291, "SubSecTimeOriginal"},
  { 0x9292, "SubSecTimeDigitized"},
  { 0x935C, "ImageSourceData"},             /* "Adobe Photoshop Document Data Block": 8BIM... */
  { 0x9c9b, "Title" },                      /* Win XP specific, Unicode  */
  { 0x9c9c, "Comments" },                   /* Win XP specific, Unicode  */
  { 0x9c9d, "Author" },                     /* Win XP specific, Unicode  */
  { 0x9c9e, "Keywords" },                   /* Win XP specific, Unicode  */
  { 0x9c9f, "Subject" },                    /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
  { 0xA000, "FlashPixVersion"},
  { 0xA001, "ColorSpace"},
  { 0xA002, "ExifImageWidth"},
  { 0xA003, "ExifImageLength"},
  { 0xA004, "RelatedSoundFile"},
  { 0xA005, "InteroperabilityOffset"},
  { 0xA20B, "FlashEnergy"},                 /* 0x920B in TIFF/EP */
  { 0xA20C, "SpatialFrequencyResponse"},    /* 0x920C    -  -    */
  { 0xA20D, "Noise"},
  { 0xA20E, "FocalPlaneXResolution"},    	/* 0x920E    -  -    */
  { 0xA20F, "FocalPlaneYResolution"},       /* 0x920F    -  -    */
  { 0xA210, "FocalPlaneResolutionUnit"},    /* 0x9210    -  -    */
  { 0xA211, "ImageNumber"},
  { 0xA212, "SecurityClassification"},
  { 0xA213, "ImageHistory"},
  { 0xA214, "SubjectLocation"},             /* 0x9214    -  -    */
  { 0xA215, "ExposureIndex"},               /* 0x9215    -  -    */
  { 0xA216, "TIFF/EPStandardID"},
  { 0xA217, "SensingMethod"},               /* 0x9217    -  -    */
  { 0xA300, "FileSource"},
  { 0xA301, "SceneType"},
  { 0xA302, "CFAPattern"},
  { 0xA401, "CustomRendered"},
  { 0xA402, "ExposureMode"},
  { 0xA403, "WhiteBalance"},
  { 0xA404, "DigitalZoomRatio"},
  { 0xA405, "FocalLengthIn35mmFilm"},
  { 0xA406, "SceneCaptureType"},
  { 0xA407, "GainControl"},
  { 0xA408, "Contrast"},
  { 0xA409, "Saturation"},
  { 0xA40A, "Sharpness"},
  { 0xA40B, "DeviceSettingDescription"},
  { 0xA40C, "SubjectDistanceRange"},
  { 0xA420, "ImageUniqueID"},
  TAG_TABLE_END
} ;

static tag_info_array tag_table_GPS = {
  { 0x0000, "GPSVersion"},
  { 0x0001, "GPSLatitudeRef"},
  { 0x0002, "GPSLatitude"},
  { 0x0003, "GPSLongitudeRef"},
  { 0x0004, "GPSLongitude"},
  { 0x0005, "GPSAltitudeRef"},
  { 0x0006, "GPSAltitude"},
  { 0x0007, "GPSTimeStamp"},
  { 0x0008, "GPSSatellites"},
  { 0x0009, "GPSStatus"},
  { 0x000A, "GPSMeasureMode"},
  { 0x000B, "GPSDOP"},
  { 0x000C, "GPSSpeedRef"},
  { 0x000D, "GPSSpeed"},
  { 0x000E, "GPSTrackRef"},
  { 0x000F, "GPSTrack"},
  { 0x0010, "GPSImgDirectionRef"},
  { 0x0011, "GPSImgDirection"},
  { 0x0012, "GPSMapDatum"},
  { 0x0013, "GPSDestLatitudeRef"},
  { 0x0014, "GPSDestLatitude"},
  { 0x0015, "GPSDestLongitudeRef"},
  { 0x0016, "GPSDestLongitude"},
  { 0x0017, "GPSDestBearingRef"},
  { 0x0018, "GPSDestBearing"},
  { 0x0019, "GPSDestDistanceRef"},
  { 0x001A, "GPSDestDistance"},
  { 0x001B, "GPSProcessingMode"},
  { 0x001C, "GPSAreaInformation"},
  { 0x001D, "GPSDateStamp"},
  { 0x001E, "GPSDifferential"},
  TAG_TABLE_END
};

static tag_info_array tag_table_IOP = {
  { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
  { 0x0002, "InterOperabilityVersion"},
  { 0x1000, "RelatedFileFormat"},
  { 0x1001, "RelatedImageWidth"},
  { 0x1002, "RelatedImageHeight"},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_CANON = {
  { 0x0001, "ModeArray"}, /* guess */
  { 0x0004, "ImageInfo"}, /* guess */
  { 0x0006, "ImageType"},
  { 0x0007, "FirmwareVersion"},
  { 0x0008, "ImageNumber"},
  { 0x0009, "OwnerName"},
  { 0x000C, "Camera"},
  { 0x000F, "CustomFunctions"},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_CASIO = {
  { 0x0001, "RecordingMode"},
  { 0x0002, "Quality"},
  { 0x0003, "FocusingMode"},
  { 0x0004, "FlashMode"},
  { 0x0005, "FlashIntensity"},
  { 0x0006, "ObjectDistance"},
  { 0x0007, "WhiteBalance"},
  { 0x000A, "DigitalZoom"},
  { 0x000B, "Sharpness"},
  { 0x000C, "Contrast"},
  { 0x000D, "Saturation"},
  { 0x0014, "CCDSensitivity"},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_FUJI = {
  { 0x0000, "Version"},
  { 0x1000, "Quality"},
  { 0x1001, "Sharpness"},
  { 0x1002, "WhiteBalance"},
  { 0x1003, "Color"},
  { 0x1004, "Tone"},
  { 0x1010, "FlashMode"},
  { 0x1011, "FlashStrength"},
  { 0x1020, "Macro"},
  { 0x1021, "FocusMode"},
  { 0x1030, "SlowSync"},
  { 0x1031, "PictureMode"},
  { 0x1100, "ContTake"},
  { 0x1300, "BlurWarning"},
  { 0x1301, "FocusWarning"},
  { 0x1302, "AEWarning "},
  TAG_TABLE_END
};

static tag_info_array tag_table_VND_NIKON = {
  { 0x0003, "Quality"},
  { 0x0004, "ColorMode"},
  { 0x0005, "ImageAdjustment"},
  { 0x0006, "CCDSensitivity"},
  { 0x0007, "WhiteBalance"},
  { 0x0008, "Focus"},
  { 0x000a, "DigitalZoom"},
  { 0x000b, "Converter"},
  TAG_TABLE_END
};
  
static tag_info_array tag_table_VND_NIKON_990 = {
  { 0x0001, "Version"},
  { 0x0002, "ISOSetting"},
  { 0x0003, "ColorMode"},
  { 0x0004, "Quality"},
  { 0x0005, "WhiteBalance"},
  { 0x0006, "ImageSharpening"},
  { 0x0007, "FocusMode"},
  { 0x0008, "FlashSetting"},
  { 0x000F, "ISOSelection"},
  { 0x0080, "ImageAdjustment"},
  { 0x0082, "AuxiliaryLens"},
  { 0x0085, "ManualFocusDistance"},
  { 0x0086, "DigitalZoom"},
  { 0x0088, "AFFocusPosition"},
  { 0x0010, "DataDump"},
  TAG_TABLE_END
};
  
static tag_info_array tag_table_VND_OLYMPUS = {
  { 0x0200, "SpecialMode"},
  { 0x0201, "JPEGQuality"},
  { 0x0202, "Macro"},
  { 0x0204, "DigitalZoom"},
  { 0x0207, "SoftwareRelease"},
  { 0x0208, "PictureInfo"},
  { 0x0209, "CameraId"},
  { 0x0F00, "DataDump"},
  TAG_TABLE_END
};

typedef enum mn_byte_order_t {
	MN_ORDER_INTEL    = 0,
	MN_ORDER_MOTOROLA = 1,
	MN_ORDER_NORMAL
} mn_byte_order_t;

typedef enum mn_offset_mode_t {
	MN_OFFSET_NORMAL,
	MN_OFFSET_MAKER,
	MN_OFFSET_GUESS
} mn_offset_mode_t;

typedef struct {
	tag_table_type   tag_table;
	char *           make;
	char *           model;
	char *           id_string;
	int              id_string_len;
	int              offset;
	mn_byte_order_t  byte_order;
	mn_offset_mode_t offset_mode;
} maker_note_type;

static const maker_note_type maker_note_array[] = {
  { tag_table_VND_CANON,     "Canon",                   NULL,  NULL,                       0,  0,  MN_ORDER_INTEL,    MN_OFFSET_GUESS},
/*  { tag_table_VND_CANON,     "Canon",                   NULL,  NULL,                       0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},*/
  { tag_table_VND_CASIO,     "CASIO",                   NULL,  NULL,                       0,  0,  MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
  { tag_table_VND_FUJI,      "FUJIFILM",                NULL,  "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL,    MN_OFFSET_MAKER},
  { tag_table_VND_NIKON,     "NIKON",                   NULL,  "Nikon\x00\x01\x00",        8,  8,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_NIKON_990, "NIKON",                   NULL,  NULL,                       0,  0,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
  { tag_table_VND_OLYMPUS,   "OLYMPUS OPTICAL CO.,LTD", NULL,  "OLYMP\x00\x01\x00",        8,  8,  MN_ORDER_NORMAL,   MN_OFFSET_NORMAL},
};
/* }}} */

/* {{{ exif_get_tagname
	Get headername for tag_num or NULL if not defined */
static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table TSRMLS_DC)
{
	int i, t;
	char tmp[32];

	for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) {
		if (t == tag_num) {
			if (ret && len)  {
				strlcpy(ret, tag_table[i].Desc, abs(len));
				if (len < 0) {
					memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
					ret[-len - 1] = '\0';
				}
				return ret;
			}
			return tag_table[i].Desc;
		}
	}

	if (ret && len) {
		snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num);
		strlcpy(ret, tmp, abs(len));
		if (len < 0) {
			memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1);
			ret[-len - 1] = '\0';
		}
		return ret;
	}
	return "";
}
/* }}} */

/* {{{ exif_char_dump
 * Do not use! This is a debug function... */
#ifdef EXIF_DEBUG
static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset)
{
	static unsigned char buf[4096+1];
	static unsigned char tmp[20];
	int c, i, p=0, n = 5+31;

	p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len);
	if (len) {
		for(i=0; i<len+15 && p+n<=sizeof(buf); i++) {
			if (i%16==0) {
				p += slprintf(buf+p, sizeof(buf)-p, "\n%08X: ", i+offset);
			}
			if (i<len) {
				c = *addr++;
				p += slprintf(buf+p, sizeof(buf)-p, "%02X ", c);
				tmp[i%16] = c>=32 ? c : '.';
				tmp[(i%16)+1] = '\0';
			} else {
				p += slprintf(buf+p, sizeof(buf)-p, "   ");
			}
			if (i%16==15) {
				p += slprintf(buf+p, sizeof(buf)-p, "    %s", tmp);
				if (i>=len) {
					break;
				}
			}
		}
	}
	buf[sizeof(buf)-1] = '\0';
	return buf;
}
#endif
/* }}} */

/* {{{ php_jpg_get16
   Get 16 bits motorola order (always) for jpeg header stuff.
*/
static int php_jpg_get16(void *value)
{
	return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
}
/* }}} */

/* {{{ php_ifd_get16u
 * Convert a 16 bit unsigned value from file's native byte order */
static int php_ifd_get16u(void *value, int motorola_intel)
{
	if (motorola_intel) {
		return (((uchar *)value)[0] << 8) | ((uchar *)value)[1];
	} else {
		return (((uchar *)value)[1] << 8) | ((uchar *)value)[0];
	}
}
/* }}} */

/* {{{ php_ifd_get16s
 * Convert a 16 bit signed value from file's native byte order */
static signed short php_ifd_get16s(void *value, int motorola_intel)
{
	return (signed short)php_ifd_get16u(value, motorola_intel);
}
/* }}} */

/* {{{ php_ifd_get32s
 * Convert a 32 bit signed value from file's native byte order */
static int php_ifd_get32s(void *value, int motorola_intel)
{
	if (motorola_intel) {
		return  (((char  *)value)[0] << 24)
			  | (((uchar *)value)[1] << 16)
			  | (((uchar *)value)[2] << 8 )
			  | (((uchar *)value)[3]      );
	} else {
		return  (((char  *)value)[3] << 24)
			  | (((uchar *)value)[2] << 16)
			  | (((uchar *)value)[1] << 8 )
			  | (((uchar *)value)[0]      );
	}
}
/* }}} */

/* {{{ php_ifd_get32u
 * Write 32 bit unsigned value to data */
static unsigned php_ifd_get32u(void *value, int motorola_intel)
{
	return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff;
}
/* }}} */

/* {{{ php_ifd_set16u
 * Write 16 bit unsigned value to data */
static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel)
{
	if (motorola_intel) {
		data[0] = (value & 0xFF00) >> 8;
		data[1] = (value & 0x00FF);
	} else {
		data[1] = (value & 0xFF00) >> 8;
		data[0] = (value & 0x00FF);
	}
}
/* }}} */

/* {{{ php_ifd_set32u
 * Convert a 32 bit unsigned value from file's native byte order */
static void php_ifd_set32u(char *data, size_t value, int motorola_intel)
{
	if (motorola_intel) {
		data[0] = (value & 0xFF000000) >> 24;
		data[1] = (value & 0x00FF0000) >> 16;
		data[2] = (value & 0x0000FF00) >>  8;
		data[3] = (value & 0x000000FF);
	} else {
		data[3] = (value & 0xFF000000) >> 24;
		data[2] = (value & 0x00FF0000) >> 16;
		data[1] = (value & 0x0000FF00) >>  8;
		data[0] = (value & 0x000000FF);
	}
}
/* }}} */

#ifdef EXIF_DEBUG
char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr TSRMLS_DC) /* {{{ */
{
	char *dump;
	int len;

	*dump_free = 0;
	if (format == TAG_FMT_STRING) {
		return value_ptr ? value_ptr : "<no data>";
	}
	if (format == TAG_FMT_UNDEFINED) {
		return "<undefined>\n";
	}
	if (format == TAG_FMT_IFD) {
		return "";
	}
	if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) {
		return "<not implemented>";
	}
	*dump_free = 1;
	if (components > 1) {
		len = spprintf(&dump, 0, "(%d,%d) {", components, length);
	} else {
		len = spprintf(&dump, 0, "{");
	}
	while(components > 0) {
		switch(format) {
			case TAG_FMT_BYTE:
			case TAG_FMT_UNDEFINED:
			case TAG_FMT_STRING:
			case TAG_FMT_SBYTE:
				dump = erealloc(dump, len + 4 + 1);
				snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr);
				len += 4;
				value_ptr++;
				break;
			case TAG_FMT_USHORT:
			case TAG_FMT_SSHORT:
				dump = erealloc(dump, len + 6 + 1);
				snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel));
				len += 6;
				value_ptr += 2;
				break;
			case TAG_FMT_ULONG:
			case TAG_FMT_SLONG:
				dump = erealloc(dump, len + 6 + 1);
				snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel));
				len += 6;
				value_ptr += 4;
				break;
			case TAG_FMT_URATIONAL:
			case TAG_FMT_SRATIONAL:
				dump = erealloc(dump, len + 13 + 1);
				snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel));
				len += 13;
				value_ptr += 8;
				break;
		}
		if (components > 0) {
			dump = erealloc(dump, len + 2 + 1);
			snprintf(dump + len, 2 + 1, ", ");
			len += 2;			
			components--;
		} else{
			break;
		}
	}
	dump = erealloc(dump, len + 1 + 1);
	snprintf(dump + len, 1 + 1, "}");
	return dump;
}
/* }}} */
#endif

/* {{{ exif_convert_any_format
 * Evaluate number, be it int, rational, or float from directory. */
static double exif_convert_any_format(void *value, int format, int motorola_intel TSRMLS_DC)
{
	int 		s_den;
	unsigned 	u_den;

	switch(format) {
		case TAG_FMT_SBYTE:     return *(signed char *)value;
		case TAG_FMT_BYTE:      return *(uchar *)value;

		case TAG_FMT_USHORT:    return php_ifd_get16u(value, motorola_intel);
		case TAG_FMT_ULONG:     return php_ifd_get32u(value, motorola_intel);

		case TAG_FMT_URATIONAL:
			u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
			if (u_den == 0) {
				return 0;
			} else {
				return (double)php_ifd_get32u(value, motorola_intel) / u_den;
			}

		case TAG_FMT_SRATIONAL:
			s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
			if (s_den == 0) {
				return 0;
			} else {
				return (double)php_ifd_get32s(value, motorola_intel) / s_den;
			}

		case TAG_FMT_SSHORT:    return (signed short)php_ifd_get16u(value, motorola_intel);
		case TAG_FMT_SLONG:     return php_ifd_get32s(value, motorola_intel);

		/* Not sure if this is correct (never seen float used in Exif format) */
		case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
#endif
			return (double)*(float *)value;
		case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
#endif
			return *(double *)value;
	}
	return 0;
}
/* }}} */

/* {{{ exif_convert_any_to_int
 * Evaluate number, be it int, rational, or float from directory. */
static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel TSRMLS_DC)
{
	int 		s_den;
	unsigned 	u_den;

	switch(format) {
		case TAG_FMT_SBYTE:     return *(signed char *)value;
		case TAG_FMT_BYTE:      return *(uchar *)value;

		case TAG_FMT_USHORT:    return php_ifd_get16u(value, motorola_intel);
		case TAG_FMT_ULONG:     return php_ifd_get32u(value, motorola_intel);

		case TAG_FMT_URATIONAL:
			u_den = php_ifd_get32u(4+(char *)value, motorola_intel);
			if (u_den == 0) {
				return 0;
			} else {
				return php_ifd_get32u(value, motorola_intel) / u_den;
			}

		case TAG_FMT_SRATIONAL:
			s_den = php_ifd_get32s(4+(char *)value, motorola_intel);
			if (s_den == 0) {
				return 0;
			} else {
				return php_ifd_get32s(value, motorola_intel) / s_den;
			}

		case TAG_FMT_SSHORT:    return php_ifd_get16u(value, motorola_intel);
		case TAG_FMT_SLONG:     return php_ifd_get32s(value, motorola_intel);

		/* Not sure if this is correct (never seen float used in Exif format) */
		case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type single");
#endif
			return (size_t)*(float *)value;
		case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
			php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Found value of type double");
#endif
			return (size_t)*(double *)value;
	}
	return 0;
}
/* }}} */

/* {{{ struct image_info_value, image_info_list
*/
#ifndef WORD
#define WORD unsigned short
#endif
#ifndef DWORD
#define DWORD unsigned int
#endif

typedef struct {
	int             num;
	int             den;
} signed_rational;

typedef struct {
	unsigned int    num;
	unsigned int    den;
} unsigned_rational;

typedef union _image_info_value {
	char 				*s;
	unsigned            u;
	int 				i;
	float               f;
	double              d;
	signed_rational 	sr;
	unsigned_rational 	ur;
	union _image_info_value   *list;
} image_info_value;

typedef struct {
	WORD                tag;
	WORD                format;
	DWORD               length;
	DWORD               dummy;  /* value ptr of tiff directory entry */
	char 				*name;
	image_info_value    value;
} image_info_data;

typedef struct {
	int                 count;
	image_info_data 	*list;
} image_info_list;
/* }}} */

/* {{{ exif_get_sectionname
 Returns the name of a section
*/
#define SECTION_FILE        0
#define SECTION_COMPUTED    1
#define SECTION_ANY_TAG     2
#define SECTION_IFD0        3
#define SECTION_THUMBNAIL   4
#define SECTION_COMMENT     5
#define SECTION_APP0        6
#define SECTION_EXIF        7
#define SECTION_FPIX        8
#define SECTION_GPS         9
#define SECTION_INTEROP     10
#define SECTION_APP12       11
#define SECTION_WINXP       12
#define SECTION_MAKERNOTE   13
#define SECTION_COUNT       14

#define FOUND_FILE          (1<<SECTION_FILE)
#define FOUND_COMPUTED      (1<<SECTION_COMPUTED)
#define FOUND_ANY_TAG       (1<<SECTION_ANY_TAG)
#define FOUND_IFD0          (1<<SECTION_IFD0)
#define FOUND_THUMBNAIL     (1<<SECTION_THUMBNAIL)
#define FOUND_COMMENT       (1<<SECTION_COMMENT)
#define FOUND_APP0          (1<<SECTION_APP0)
#define FOUND_EXIF          (1<<SECTION_EXIF)
#define FOUND_FPIX          (1<<SECTION_FPIX)
#define FOUND_GPS           (1<<SECTION_GPS)
#define FOUND_INTEROP       (1<<SECTION_INTEROP)
#define FOUND_APP12         (1<<SECTION_APP12)
#define FOUND_WINXP         (1<<SECTION_WINXP)
#define FOUND_MAKERNOTE     (1<<SECTION_MAKERNOTE)

static char *exif_get_sectionname(int section)
{
	switch(section) {
		case SECTION_FILE:      return "FILE";
		case SECTION_COMPUTED:  return "COMPUTED";
		case SECTION_ANY_TAG:   return "ANY_TAG";
		case SECTION_IFD0:      return "IFD0";
		case SECTION_THUMBNAIL: return "THUMBNAIL";
		case SECTION_COMMENT:   return "COMMENT";
		case SECTION_APP0:      return "APP0";
		case SECTION_EXIF:      return "EXIF";
		case SECTION_FPIX:      return "FPIX";
		case SECTION_GPS:       return "GPS";
		case SECTION_INTEROP:   return "INTEROP";
		case SECTION_APP12:     return "APP12";
		case SECTION_WINXP:     return "WINXP";
		case SECTION_MAKERNOTE: return "MAKERNOTE";
	}
	return "";
}

static tag_table_type exif_get_tag_table(int section)
{
	switch(section) {
		case SECTION_FILE:      return &tag_table_IFD[0];
		case SECTION_COMPUTED:  return &tag_table_IFD[0];
		case SECTION_ANY_TAG:   return &tag_table_IFD[0];
		case SECTION_IFD0:      return &tag_table_IFD[0];
		case SECTION_THUMBNAIL: return &tag_table_IFD[0];
		case SECTION_COMMENT:   return &tag_table_IFD[0];
		case SECTION_APP0:      return &tag_table_IFD[0];
		case SECTION_EXIF:      return &tag_table_IFD[0];
		case SECTION_FPIX:      return &tag_table_IFD[0];
		case SECTION_GPS:       return &tag_table_GPS[0];
		case SECTION_INTEROP:   return &tag_table_IOP[0];
		case SECTION_APP12:     return &tag_table_IFD[0];
		case SECTION_WINXP:     return &tag_table_IFD[0];
	}
	return &tag_table_IFD[0];
}
/* }}} */

/* {{{ exif_get_sectionlist
   Return list of sectionnames specified by sectionlist. Return value must be freed
*/
static char *exif_get_sectionlist(int sectionlist TSRMLS_DC)
{
	int i, len, ml = 0;
	char *sections;

	for(i=0; i<SECTION_COUNT; i++) {
		ml += strlen(exif_get_sectionname(i))+2;
	}
	sections = safe_emalloc(ml, 1, 1);
	sections[0] = '\0';
	len = 0;
	for(i=0; i<SECTION_COUNT; i++) {
		if (sectionlist&(1<<i)) {
			snprintf(sections+len, ml-len, "%s, ", exif_get_sectionname(i));
			len = strlen(sections);
		}
	}
	if (len>2)
		sections[len-2] = '\0';
	return sections;
}
/* }}} */

/* {{{ struct image_info_type
   This structure stores Exif header image elements in a simple manner
   Used to store camera data as extracted from the various ways that it can be
   stored in a nexif header
*/

typedef struct {
	int     type;
	size_t  size;
	uchar   *data;
} file_section;

typedef struct {
	int             count;
	file_section    *list;
} file_section_list;

typedef struct {
	image_filetype  filetype;
	size_t          width, height;
	size_t          size;
	size_t          offset;
	char 	        *data;
} thumbnail_data;

typedef struct {
	char			*value;
	size_t			size;
	int				tag;
} xp_field_type;

typedef struct {
	int             count;
	xp_field_type   *list;
} xp_field_list;

/* This structure is used to store a section of a Jpeg file. */
typedef struct {
	php_stream      *infile;
	char            *FileName;
	time_t          FileDateTime;
	size_t          FileSize;
	image_filetype  FileType;
	int             Height, Width;
	int             IsColor;

	char            *make;
	char            *model;

	float           ApertureFNumber;
	float           ExposureTime;
	double          FocalplaneUnits;
	float           CCDWidth;
	double          FocalplaneXRes;
	size_t          ExifImageWidth;
	float           FocalLength;
	float           Distance;

	int             motorola_intel; /* 1 Motorola; 0 Intel */

	char            *UserComment;
	int             UserCommentLength;
	char            *UserCommentEncoding;
	char            *encode_unicode;
	char            *decode_unicode_be;
	char            *decode_unicode_le;
	char            *encode_jis;
	char            *decode_jis_be;
	char            *decode_jis_le;
	char            *Copyright;/* EXIF standard defines Copyright as "<Photographer> [ '\0' <Editor> ] ['\0']" */
	char            *CopyrightPhotographer;
	char            *CopyrightEditor;

	xp_field_list   xp_fields;

	thumbnail_data  Thumbnail;
	/* other */
	int             sections_found; /* FOUND_<marker> */
	image_info_list info_list[SECTION_COUNT];
	/* for parsing */
	int             read_thumbnail;
	int             read_all;
	int             ifd_nesting_level;
	/* internal */
	file_section_list 	file;
} image_info_type;
/* }}} */

/* {{{ exif_error_docref */
static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...)
{
	va_list args;
	
	va_start(args, format);
#ifdef EXIF_DEBUG
	{
		char *buf;

		spprintf(&buf, 0, "%s(%d): %s", _file, _line, format);
		php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args TSRMLS_CC);
		efree(buf);
	}
#else
	php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args TSRMLS_CC);
#endif
	va_end(args);
}
/* }}} */

/* {{{ jpeg_sof_info
 */
typedef struct {
	int     bits_per_sample;
	size_t  width;
	size_t  height;
	int     num_components;
} jpeg_sof_info;
/* }}} */

/* {{{ exif_file_sections_add
 Add a file_section to image_info
 returns the used block or -1. if size>0 and data == NULL buffer of size is allocated
*/
static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data)
{
	file_section    *tmp;
	int             count = ImageInfo->file.count;

	tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0);
	ImageInfo->file.list = tmp;
	ImageInfo->file.list[count].type = 0xFFFF;
	ImageInfo->file.list[count].data = NULL;
	ImageInfo->file.list[count].size = 0;
	ImageInfo->file.count = count+1;
	if (!size) {
		data = NULL;
	} else if (data == NULL) {
		data = safe_emalloc(size, 1, 0);
	}
	ImageInfo->file.list[count].type = type;
	ImageInfo->file.list[count].data = data;
	ImageInfo->file.list[count].size = size;
	return count;
}
/* }}} */

/* {{{ exif_file_sections_realloc
 Reallocate a file section returns 0 on success and -1 on failure
*/
static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size TSRMLS_DC)
{
	void *tmp;

	/* This is not a malloc/realloc check. It is a plausibility check for the
	 * function parameters (requirements engineering).
	 */
	if (section_index >= ImageInfo->file.count) {
		EXIF_ERRLOG_FSREALLOC(ImageInfo)
		return -1;
	}
	tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0);
	ImageInfo->file.list[section_index].data = tmp;
	ImageInfo->file.list[section_index].size = size;
	return 0;
}
/* }}} */

/* {{{ exif_file_section_free
   Discard all file_sections in ImageInfo
*/
static int exif_file_sections_free(image_info_type *ImageInfo)
{
	int i;

	if (ImageInfo->file.count) {
		for (i=0; i<ImageInfo->file.count; i++) {
			EFREE_IF(ImageInfo->file.list[i].data);
		}
	}
	EFREE_IF(ImageInfo->file.list);
	ImageInfo->file.count = 0;
	return TRUE;
}
/* }}} */

/* {{{ exif_iif_add_value
 Add a value to image_info
*/
static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, int motorola_intel TSRMLS_DC)
{
	size_t idex;
	void *vptr;
	image_info_value *info_value;
	image_info_data  *info_data;
	image_info_data  *list;

	if (length < 0) {
		return;
	}

	list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
	image_info->info_list[section_index].list = list;

	info_data  = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
	memset(info_data, 0, sizeof(image_info_data));
	info_data->tag    = tag;
	info_data->format = format;
	info_data->length = length;
	info_data->name   = estrdup(name);
	info_value        = &info_data->value;

	switch (format) {
		case TAG_FMT_STRING:
			if (value) {
				length = php_strnlen(value, length);
				info_value->s = estrndup(value, length);
				info_data->length = length;
			} else {
				info_data->length = 0;
				info_value->s = estrdup("");
			}
			break;

		default:
			/* Standard says more types possible but skip them...
			 * but allow users to handle data if they know how to
			 * So not return but use type UNDEFINED
			 * return;
			 */
			info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */
		case TAG_FMT_SBYTE:
		case TAG_FMT_BYTE:
		/* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
			if (!length)
				break;
		case TAG_FMT_UNDEFINED:
			if (value) {
				/* do not recompute length here */
				info_value->s = estrndup(value, length);
				info_data->length = length;
			} else {
				info_data->length = 0;
				info_value->s = estrdup("");
			}
			break;

		case TAG_FMT_USHORT:
		case TAG_FMT_ULONG:
		case TAG_FMT_URATIONAL:
		case TAG_FMT_SSHORT:
		case TAG_FMT_SLONG:
		case TAG_FMT_SRATIONAL:
		case TAG_FMT_SINGLE:
		case TAG_FMT_DOUBLE:
			if (length==0) {
				break;
			} else
			if (length>1) {
				info_value->list = safe_emalloc(length, sizeof(image_info_value), 0);
			} else {
				info_value = &info_data->value;
			}
			for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) {
				if (length>1) {
					info_value = &info_data->value.list[idex];
				}
				switch (format) {
					case TAG_FMT_USHORT:
						info_value->u = php_ifd_get16u(vptr, motorola_intel);
						break;

					case TAG_FMT_ULONG:
						info_value->u = php_ifd_get32u(vptr, motorola_intel);
						break;

					case TAG_FMT_URATIONAL:
						info_value->ur.num = php_ifd_get32u(vptr, motorola_intel);
						info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
						break;

					case TAG_FMT_SSHORT:
						info_value->i = php_ifd_get16s(vptr, motorola_intel);
						break;

					case TAG_FMT_SLONG:
						info_value->i = php_ifd_get32s(vptr, motorola_intel);
						break;

					case TAG_FMT_SRATIONAL:
						info_value->sr.num = php_ifd_get32u(vptr, motorola_intel);
						info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel);
						break;

					case TAG_FMT_SINGLE:
#ifdef EXIF_DEBUG
						php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type single");
#endif
						info_value->f = *(float *)value;

					case TAG_FMT_DOUBLE:
#ifdef EXIF_DEBUG
						php_error_docref(NULL TSRMLS_CC, E_WARNING, "Found value of type double");
#endif
						info_value->d = *(double *)value;
						break;
				}
			}
	}
	image_info->sections_found |= 1<<section_index;
	image_info->info_list[section_index].count++;
}
/* }}} */

/* {{{ exif_iif_add_tag
 Add a tag from IFD to image_info
*/
static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value TSRMLS_DC)
{
	exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel TSRMLS_CC);
}
/* }}} */

/* {{{ exif_iif_add_int
 Add an int value to image_info
*/
static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value TSRMLS_DC)
{
	image_info_data  *info_data;
	image_info_data  *list;

	list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
	image_info->info_list[section_index].list = list;

	info_data  = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
	info_data->tag    = TAG_NONE;
	info_data->format = TAG_FMT_SLONG;
	info_data->length = 1;
	info_data->name   = estrdup(name);
	info_data->value.i = value;
	image_info->sections_found |= 1<<section_index;
	image_info->info_list[section_index].count++;
}
/* }}} */

/* {{{ exif_iif_add_str
 Add a string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value TSRMLS_DC)
{
	image_info_data  *info_data;
	image_info_data  *list;

	if (value) {
		list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
		image_info->info_list[section_index].list = list;
		info_data  = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
		info_data->tag    = TAG_NONE;
		info_data->format = TAG_FMT_STRING;
		info_data->length = 1;
		info_data->name   = estrdup(name);
		info_data->value.s = estrdup(value);
		image_info->sections_found |= 1<<section_index;
		image_info->info_list[section_index].count++;
	}
}
/* }}} */

/* {{{ exif_iif_add_fmt
 Add a format string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name TSRMLS_DC, char *value, ...)
{
	char             *tmp;
	va_list 		 arglist;

	va_start(arglist, value);
	if (value) {
		vspprintf(&tmp, 0, value, arglist);
		exif_iif_add_str(image_info, section_index, name, tmp TSRMLS_CC);
		efree(tmp);
	}
	va_end(arglist);
}
/* }}} */

/* {{{ exif_iif_add_str
 Add a string value to image_info MUST BE NUL TERMINATED
*/
static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value TSRMLS_DC)
{
	image_info_data  *info_data;
	image_info_data  *list;

	if (value) {
		list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0);
		image_info->info_list[section_index].list = list;
		info_data  = &image_info->info_list[section_index].list[image_info->info_list[section_index].count];
		info_data->tag    = TAG_NONE;
		info_data->format = TAG_FMT_UNDEFINED;
		info_data->length = length;
		info_data->name   = estrdup(name);
		info_data->value.s = safe_emalloc(length, 1, 1);
		memcpy(info_data->value.s, value, length);
		info_data->value.s[length] = 0;
		image_info->sections_found |= 1<<section_index;
		image_info->info_list[section_index].count++;
	}
}
/* }}} */

/* {{{ exif_iif_free
 Free memory allocated for image_info
*/
static void exif_iif_free(image_info_type *image_info, int section_index) {
	int  i;
	void *f; /* faster */

	if (image_info->info_list[section_index].count) {
		for (i=0; i < image_info->info_list[section_index].count; i++) {
			if ((f=image_info->info_list[section_index].list[i].name) != NULL) {
				efree(f);
			}
			switch(image_info->info_list[section_index].list[i].format) {
				case TAG_FMT_SBYTE:
				case TAG_FMT_BYTE:
					/* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */
					if (image_info->info_list[section_index].list[i].length<1)
						break;
				default:
				case TAG_FMT_UNDEFINED:
				case TAG_FMT_STRING:
					if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) {
						efree(f);
					}
					break;

				case TAG_FMT_USHORT:
				case TAG_FMT_ULONG:
				case TAG_FMT_URATIONAL:
				case TAG_FMT_SSHORT:
				case TAG_FMT_SLONG:
				case TAG_FMT_SRATIONAL:
				case TAG_FMT_SINGLE:
				case TAG_FMT_DOUBLE:
					/* nothing to do here */
					if (image_info->info_list[section_index].list[i].length > 1) {
						if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) {
							efree(f);
						}
					}
					break;
			}
		}
	}
	EFREE_IF(image_info->info_list[section_index].list);
}
/* }}} */

/* {{{ add_assoc_image_info
 * Add image_info to associative array value. */
static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index TSRMLS_DC)
{
	char    buffer[64], *val, *name, uname[64];
	int     i, ap, l, b, idx=0, unknown=0;
#ifdef EXIF_DEBUG
	int     info_tag;
#endif
	image_info_value *info_value;
	image_info_data  *info_data;
	zval 			 *tmpi, *array = NULL;

#ifdef EXIF_DEBUG
/*		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/
#endif
	if (image_info->info_list[section_index].count) {
		if (sub_array) {
			MAKE_STD_ZVAL(tmpi);
			array_init(tmpi);
		} else {
			tmpi = value;
		}

		for(i=0; i<image_info->info_list[section_index].count; i++) {
			info_data  = &image_info->info_list[section_index].list[i];
#ifdef EXIF_DEBUG
			info_tag   = info_data->tag; /* conversion */
#endif
			info_value = &info_data->value;
			if (!(name = info_data->name)) {
				snprintf(uname, sizeof(uname), "%d", unknown++);
				name = uname;
			}
#ifdef EXIF_DEBUG
/*		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index) TSRMLS_CC), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:"<no data>"):exif_get_tagformat(info_data->format));*/
#endif
			if (info_data->length==0) {
				add_assoc_null(tmpi, name);
			} else {
				switch (info_data->format) {
					default:
						/* Standard says more types possible but skip them...
						 * but allow users to handle data if they know how to
						 * So not return but use type UNDEFINED
						 * return;
						 */
					case TAG_FMT_BYTE:
					case TAG_FMT_SBYTE:
					case TAG_FMT_UNDEFINED:
						if (!info_value->s) {
							add_assoc_stringl(tmpi, name, "", 0, 1);
						} else {
							add_assoc_stringl(tmpi, name, info_value->s, info_data->length, 1);
						}
						break;

					case TAG_FMT_STRING:
						if (!(val = info_value->s)) {
							val = "";
						}
						if (section_index==SECTION_COMMENT) {
							add_index_string(tmpi, idx++, val, 1);
						} else {
							add_assoc_string(tmpi, name, val, 1);
						}
						break;

					case TAG_FMT_URATIONAL:
					case TAG_FMT_SRATIONAL:
					/*case TAG_FMT_BYTE:
					case TAG_FMT_SBYTE:*/
					case TAG_FMT_USHORT:
					case TAG_FMT_SSHORT:
					case TAG_FMT_SINGLE:
					case TAG_FMT_DOUBLE:
					case TAG_FMT_ULONG:
					case TAG_FMT_SLONG:
						/* now the rest, first see if it becomes an array */
						if ((l = info_data->length) > 1) {
							array = NULL;
							MAKE_STD_ZVAL(array);
							array_init(array);
						}
						for(ap=0; ap<l; ap++) {
							if (l>1) {
								info_value = &info_data->value.list[ap];
							}
							switch (info_data->format) {
								case TAG_FMT_BYTE:
									if (l>1) {
										info_value = &info_data->value;
										for (b=0;b<l;b++) {
											add_index_long(array, b, (int)(info_value->s[b]));
										}
										break;
									}
								case TAG_FMT_USHORT:
								case TAG_FMT_ULONG:
									if (l==1) {
										add_assoc_long(tmpi, name, (int)info_value->u);
									} else {
										add_index_long(array, ap, (int)info_value->u);
									}
									break;

								case TAG_FMT_URATIONAL:
									snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den);
									if (l==1) {
										add_assoc_string(tmpi, name, buffer, 1);
									} else {
										add_index_string(array, ap, buffer, 1);
									}
									break;

								case TAG_FMT_SBYTE:
									if (l>1) {
										info_value = &info_data->value;
										for (b=0;b<l;b++) {
											add_index_long(array, ap, (int)info_value->s[b]);
										}
										break;
									}
								case TAG_FMT_SSHORT:
								case TAG_FMT_SLONG:
									if (l==1) {
										add_assoc_long(tmpi, name, info_value->i);
									} else {
										add_index_long(array, ap, info_value->i);
									}
									break;

								case TAG_FMT_SRATIONAL:
									snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den);
									if (l==1) {
										add_assoc_string(tmpi, name, buffer, 1);
									} else {
										add_index_string(array, ap, buffer, 1);
									}
									break;

								case TAG_FMT_SINGLE:
									if (l==1) {
										add_assoc_double(tmpi, name, info_value->f);
									} else {
										add_index_double(array, ap, info_value->f);
									}
									break;

								case TAG_FMT_DOUBLE:
									if (l==1) {
										add_assoc_double(tmpi, name, info_value->d);
									} else {
										add_index_double(array, ap, info_value->d);
									}
									break;
							}
							info_value = &info_data->value.list[ap];
						}
						if (l>1) {
							add_assoc_zval(tmpi, name, array);
						}
						break;
				}
			}
		}
		if (sub_array) {
			add_assoc_zval(value, exif_get_sectionname(section_index), tmpi);
		}
	}
}
/* }}} */

/* {{{ Markers
   JPEG markers consist of one or more 0xFF bytes, followed by a marker
   code byte (which is not an FF).  Here are the marker codes of interest
   in this program.  (See jdmarker.c for a more complete list.)
*/

#define M_TEM   0x01    /* temp for arithmetic coding              */
#define M_RES   0x02    /* reserved                                */
#define M_SOF0  0xC0    /* Start Of Frame N                        */
#define M_SOF1  0xC1    /* N indicates which compression process   */
#define M_SOF2  0xC2    /* Only SOF0-SOF2 are now in common use    */
#define M_SOF3  0xC3
#define M_DHT   0xC4
#define M_SOF5  0xC5    /* NB: codes C4 and CC are NOT SOF markers */
#define M_SOF6  0xC6
#define M_SOF7  0xC7
#define M_JPEG  0x08    /* reserved for extensions                 */
#define M_SOF9  0xC9
#define M_SOF10 0xCA
#define M_SOF11 0xCB
#define M_DAC   0xCC    /* arithmetic table                         */
#define M_SOF13 0xCD
#define M_SOF14 0xCE
#define M_SOF15 0xCF
#define M_RST0  0xD0    /* restart segment                          */
#define M_RST1  0xD1
#define M_RST2  0xD2
#define M_RST3  0xD3
#define M_RST4  0xD4
#define M_RST5  0xD5
#define M_RST6  0xD6
#define M_RST7  0xD7
#define M_SOI   0xD8    /* Start Of Image (beginning of datastream) */
#define M_EOI   0xD9    /* End Of Image (end of datastream)         */
#define M_SOS   0xDA    /* Start Of Scan (begins compressed data)   */
#define M_DQT   0xDB
#define M_DNL   0xDC
#define M_DRI   0xDD
#define M_DHP   0xDE
#define M_EXP   0xDF
#define M_APP0  0xE0    /* JPEG: 'JFIFF' AND (additional 'JFXX')    */
#define M_EXIF  0xE1    /* Exif Attribute Information               */
#define M_APP2  0xE2    /* Flash Pix Extension Data?                */
#define M_APP3  0xE3
#define M_APP4  0xE4
#define M_APP5  0xE5
#define M_APP6  0xE6
#define M_APP7  0xE7
#define M_APP8  0xE8
#define M_APP9  0xE9
#define M_APP10 0xEA
#define M_APP11 0xEB
#define M_APP12 0xEC
#define M_APP13 0xED    /* IPTC International Press Telecommunications Council */
#define M_APP14 0xEE    /* Software, Copyright?                     */
#define M_APP15 0xEF
#define M_JPG0  0xF0
#define M_JPG1  0xF1
#define M_JPG2  0xF2
#define M_JPG3  0xF3
#define M_JPG4  0xF4
#define M_JPG5  0xF5
#define M_JPG6  0xF6
#define M_JPG7  0xF7
#define M_JPG8  0xF8
#define M_JPG9  0xF9
#define M_JPG10 0xFA
#define M_JPG11 0xFB
#define M_JPG12 0xFC
#define M_JPG13 0xFD
#define M_COM   0xFE    /* COMment                                  */

#define M_PSEUDO 0x123 	/* Extra value.                             */

/* }}} */

/* {{{ jpeg2000 markers
 */
/* Markers x30 - x3F do not have a segment */
/* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_<xx> */
/* Markers xF0 - xF7 ISO/IEC 10918-3 */
/* Markers xF7 - xF8 ISO/IEC 14495-1 */
/* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */
#define JC_SOC   0x4F   /* NN, Start of codestream                          */
#define JC_SIZ   0x51   /* RN, Image and tile size                          */
#define JC_COD   0x52   /* RO, Codeing style defaulte                       */
#define JC_COC   0x53   /* OO, Coding style component                       */
#define JC_TLM   0x55   /* ON, Tile part length main header                 */
#define JC_PLM   0x57   /* ON, Packet length main header                    */
#define JC_PLT   0x58   /* NO, Packet length tile part header               */
#define JC_QCD   0x5C   /* RO, Quantization default                         */
#define JC_QCC   0x5D   /* OO, Quantization component                       */
#define JC_RGN   0x5E   /* OO, Region of interest                           */
#define JC_POD   0x5F   /* OO, Progression order default                    */
#define JC_PPM   0x60   /* ON, Packed packet headers main header            */
#define JC_PPT   0x61   /* NO, Packet packet headers tile part header       */
#define JC_CME   0x64   /* OO, Comment: "LL E <text>" E=0:binary, E=1:ascii */
#define JC_SOT   0x90   /* NR, Start of tile                                */
#define JC_SOP   0x91   /* NO, Start of packeter default                    */
#define JC_EPH   0x92   /* NO, End of packet header                         */
#define JC_SOD   0x93   /* NL, Start of data                                */
#define JC_EOC   0xD9   /* NN, End of codestream                            */
/* }}} */

/* {{{ exif_process_COM
   Process a COM marker.
   We want to print out the marker contents as legible text;
   we must guard against random junk and varying newline representations.
*/
static void exif_process_COM (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
{
	exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2 TSRMLS_CC);
}
/* }}} */

/* {{{ exif_process_CME
   Process a CME marker.
   We want to print out the marker contents as legible text;
   we must guard against random junk and varying newline representations.
*/
#ifdef EXIF_JPEG2000
static void exif_process_CME (image_info_type *image_info, char *value, size_t length TSRMLS_DC)
{
	if (length>3) {
		switch(value[2]) {
			case 0:
				exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value TSRMLS_CC);
				break;
			case 1:
				exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value);
				break;
			default:
				php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Undefined JPEG2000 comment encoding");
				break;
		}
	} else {
		exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL);
		php_error_docref(NULL TSRMLS_CC, E_NOTICE, "JPEG2000 comment section too small");
	}
}
#endif
/* }}} */

/* {{{ exif_process_SOFn
 * Process a SOFn marker.  This is useful for the image dimensions */
static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result)
{
/* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1)  3*Channels (1)  */
	result->bits_per_sample = Data[2];
	result->height          = php_jpg_get16(Data+3);
	result->width           = php_jpg_get16(Data+5);
	result->num_components  = Data[7];

/*	switch (marker) {
		case M_SOF0:  process = "Baseline";  break;
		case M_SOF1:  process = "Extended sequential";  break;
		case M_SOF2:  process = "Progressive";  break;
		case M_SOF3:  process = "Lossless";  break;
		case M_SOF5:  process = "Differential sequential";  break;
		case M_SOF6:  process = "Differential progressive";  break;
		case M_SOF7:  process = "Differential lossless";  break;
		case M_SOF9:  process = "Extended sequential, arithmetic coding";  break;
		case M_SOF10: process = "Progressive, arithmetic coding";  break;
		case M_SOF11: process = "Lossless, arithmetic coding";  break;
		case M_SOF13: process = "Differential sequential, arithmetic coding";  break;
		case M_SOF14: process = "Differential progressive, arithmetic coding"; break;
		case M_SOF15: process = "Differential lossless, arithmetic coding";  break;
		default:      process = "Unknown";  break;
	}*/
}
/* }}} */

/* forward declarations */
static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index TSRMLS_DC);
static int exif_process_IFD_TAG(    image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table TSRMLS_DC);

/* {{{ exif_get_markername
	Get name of marker */
#ifdef EXIF_DEBUG
static char * exif_get_markername(int marker)
{
	switch(marker) {
		case 0xC0: return "SOF0";
		case 0xC1: return "SOF1";
		case 0xC2: return "SOF2";
		case 0xC3: return "SOF3";
		case 0xC4: return "DHT";
		case 0xC5: return "SOF5";
		case 0xC6: return "SOF6";
		case 0xC7: return "SOF7";
		case 0xC9: return "SOF9";
		case 0xCA: return "SOF10";
		case 0xCB: return "SOF11";
		case 0xCD: return "SOF13";
		case 0xCE: return "SOF14";
		case 0xCF: return "SOF15";
		case 0xD8: return "SOI";
		case 0xD9: return "EOI";
		case 0xDA: return "SOS";
		case 0xDB: return "DQT";
		case 0xDC: return "DNL";
		case 0xDD: return "DRI";
		case 0xDE: return "DHP";
		case 0xDF: return "EXP";
		case 0xE0: return "APP0";
		case 0xE1: return "EXIF";
		case 0xE2: return "FPIX";
		case 0xE3: return "APP3";
		case 0xE4: return "APP4";
		case 0xE5: return "APP5";
		case 0xE6: return "APP6";
		case 0xE7: return "APP7";
		case 0xE8: return "APP8";
		case 0xE9: return "APP9";
		case 0xEA: return "APP10";
		case 0xEB: return "APP11";
		case 0xEC: return "APP12";
		case 0xED: return "APP13";
		case 0xEE: return "APP14";
		case 0xEF: return "APP15";
		case 0xF0: return "JPG0";
		case 0xFD: return "JPG13";
		case 0xFE: return "COM";
		case 0x01: return "TEM";
	}
	return "Unknown";
}
#endif
/* }}} */

/* {{{ proto string exif_tagname(index)
	Get headername for index or false if not defined */
PHP_FUNCTION(exif_tagname)
{
	long tag;
	char *szTemp;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &tag) == FAILURE) {
		return;
	}

	szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD TSRMLS_CC);

	if (tag < 0 || !szTemp || !szTemp[0]) {
		RETURN_FALSE;
	}

	RETURN_STRING(szTemp, 1)
}
/* }}} */

/* {{{ exif_ifd_make_value
 * Create a value for an ifd from an info_data pointer */
static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel TSRMLS_DC) {
	size_t  byte_count;
	char    *value_ptr, *data_ptr;
	size_t  i;

	image_info_value  *info_value;

	byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
	value_ptr = safe_emalloc(max(byte_count, 4), 1, 0);
	memset(value_ptr, 0, 4);
	if (!info_data->length) {
		return value_ptr;
	}
	if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING
	  || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE))
	) {
		memmove(value_ptr, info_data->value.s, byte_count);
		return value_ptr;
	} else if (info_data->format == TAG_FMT_BYTE) {
		*value_ptr = info_data->value.u;
		return value_ptr;
	} else if (info_data->format == TAG_FMT_SBYTE) {
		*value_ptr = info_data->value.i;
		return value_ptr;
	} else {
		data_ptr = value_ptr;
		for(i=0; i<info_data->length; i++) {
			if (info_data->length==1) {
				info_value = &info_data->value;
			} else {
				info_value = &info_data->value.list[i];
			}
			switch(info_data->format) {
				case TAG_FMT_USHORT:
					php_ifd_set16u(data_ptr, info_value->u, motorola_intel);
					data_ptr += 2;
					break;
				case TAG_FMT_ULONG:
					php_ifd_set32u(data_ptr, info_value->u, motorola_intel);
					data_ptr += 4;
					break;
				case TAG_FMT_SSHORT:
					php_ifd_set16u(data_ptr, info_value->i, motorola_intel);
					data_ptr += 2;
					break;
				case TAG_FMT_SLONG:
					php_ifd_set32u(data_ptr, info_value->i, motorola_intel);
					data_ptr += 4;
					break;
				case TAG_FMT_URATIONAL:
					php_ifd_set32u(data_ptr,   info_value->sr.num, motorola_intel);
					php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel);
					data_ptr += 8;
					break;
				case TAG_FMT_SRATIONAL:
					php_ifd_set32u(data_ptr,   info_value->ur.num, motorola_intel);
					php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel);
					data_ptr += 8;
					break;
				case TAG_FMT_SINGLE:
					memmove(data_ptr, &info_value->f, 4);
					data_ptr += 4;
					break;
				case TAG_FMT_DOUBLE:
					memmove(data_ptr, &info_value->d, 8);
					data_ptr += 8;
					break;
			}
		}
	}
	return value_ptr;
}
/* }}} */

/* {{{ exif_thumbnail_build
 * Check and build thumbnail */
static void exif_thumbnail_build(image_info_type *ImageInfo TSRMLS_DC) {
	size_t            new_size, new_move, new_value;
	char              *new_data;
	void              *value_ptr;
	int               i, byte_count;
	image_info_list   *info_list;
	image_info_data   *info_data;
#ifdef EXIF_DEBUG
	char              tagname[64];
#endif

	if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) {
		return; /* ignore this call */
	}
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype);
#endif
	switch(ImageInfo->Thumbnail.filetype) {
		default:
		case IMAGE_FILETYPE_JPEG:
			/* done */
			break;
		case IMAGE_FILETYPE_TIFF_II:
		case IMAGE_FILETYPE_TIFF_MM:
			info_list = &ImageInfo->info_list[SECTION_THUMBNAIL];
			new_size  = 8 + 2 + info_list->count * 12 + 4;
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size);
#endif
			new_value= new_size; /* offset for ifd values outside ifd directory */
			for (i=0; i<info_list->count; i++) {
				info_data  = &info_list->list[i];
				byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
				if (byte_count > 4) {
					new_size += byte_count;
				}
			}
			new_move = new_size;
			new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size);
			ImageInfo->Thumbnail.data = new_data;
			memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
			ImageInfo->Thumbnail.size += new_size;
			/* fill in data */
			if (ImageInfo->motorola_intel) {
				memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8);
			} else {
				memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8);
			}
			new_data += 8;
			php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel);
			new_data += 2;
			for (i=0; i<info_list->count; i++) {
				info_data  = &info_list->list[i];
				byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname(info_data->tag, tagname, -12, tag_table_IFD TSRMLS_CC), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count);
#endif
				if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) {
					php_ifd_set16u(new_data + 0, info_data->tag,    ImageInfo->motorola_intel);
					php_ifd_set16u(new_data + 2, TAG_FMT_ULONG,     ImageInfo->motorola_intel);
					php_ifd_set32u(new_data + 4, 1,                 ImageInfo->motorola_intel);
					php_ifd_set32u(new_data + 8, new_move,          ImageInfo->motorola_intel);
				} else {
					php_ifd_set16u(new_data + 0, info_data->tag,    ImageInfo->motorola_intel);
					php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel);
					php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel);
					value_ptr  = exif_ifd_make_value(info_data, ImageInfo->motorola_intel TSRMLS_CC);
					if (byte_count <= 4) {
						memmove(new_data+8, value_ptr, 4);
					} else {
						php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count);
#endif
						memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count);
						new_value += byte_count;
					}
					efree(value_ptr);
				}
				new_data += 12;
			}
			memset(new_data, 0, 4); /* next ifd pointer */
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created");
#endif
			break;
	}
}
/* }}} */

/* {{{ exif_thumbnail_extract
 * Grab the thumbnail, corrected */
static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length TSRMLS_DC) {
	if (ImageInfo->Thumbnail.data) {
		exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails");
		return; /* Should not happen */
	}
	if (!ImageInfo->read_thumbnail)	{
		return; /* ignore this call */
	}
	/* according to exif2.1, the thumbnail is not supposed to be greater than 64K */
	if (ImageInfo->Thumbnail.size >= 65536
	 || ImageInfo->Thumbnail.size <= 0
	 || ImageInfo->Thumbnail.offset <= 0
	) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset");
		return;
	}
	/* Check to make sure we are not going to go past the ExifLength */
	if ((ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length) {
		EXIF_ERRLOG_THUMBEOF(ImageInfo)
		return;
	}
	ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
	exif_thumbnail_build(ImageInfo TSRMLS_CC);
}
/* }}} */

/* {{{ exif_process_undefined
 * Copy a string/buffer in Exif header to a character string and return length of allocated buffer if any. */
static int exif_process_undefined(char **result, char *value, size_t byte_count TSRMLS_DC) {
	/* we cannot use strlcpy - here the problem is that we have to copy NUL
	 * chars up to byte_count, we also have to add a single NUL character to
	 * force end of string.
	 * estrndup does not return length
	 */
	if (byte_count) {
		(*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */
		return byte_count+1;
	}
	return 0;
}
/* }}} */

/* {{{ exif_process_string_raw
 * Copy a string in Exif header to a character string returns length of allocated buffer if any. */
static int exif_process_string_raw(char **result, char *value, size_t byte_count) {
	/* we cannot use strlcpy - here the problem is that we have to copy NUL
	 * chars up to byte_count, we also have to add a single NUL character to
	 * force end of string.
	 */
	if (byte_count) {
		(*result) = safe_emalloc(byte_count, 1, 1);
		memcpy(*result, value, byte_count);
		(*result)[byte_count] = '\0';
		return byte_count+1;
	}
	return 0;
}
/* }}} */

/* {{{ exif_process_string
 * Copy a string in Exif header to a character string and return length of allocated buffer if any.
 * In contrast to exif_process_string this function does always return a string buffer */
static int exif_process_string(char **result, char *value, size_t byte_count TSRMLS_DC) {
	/* we cannot use strlcpy - here the problem is that we cannot use strlen to
	 * determin length of string and we cannot use strlcpy with len=byte_count+1
	 * because then we might get into an EXCEPTION if we exceed an allocated
	 * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL
	 * char.
	 * estrdup would sometimes allocate more memory and does not return length
	 */
	if ((byte_count=php_strnlen(value, byte_count)) > 0) {
		return exif_process_undefined(result, value, byte_count TSRMLS_CC);
	}
	(*result) = estrndup("", 1); /* force empty string */
	return byte_count+1;
}
/* }}} */

/* {{{ exif_process_user_comment
 * Process UserComment in IFD. */
static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount TSRMLS_DC)
{
	int   a;
	char  *decode;
	size_t len;;

	*pszEncoding = NULL;
	/* Copy the comment */
	if (ByteCount>=8) {
		if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
			*pszEncoding = estrdup((const char*)szValuePtr);
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
			/* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16) 
			 * since we have no encoding support for the BOM yet we skip that.
			 */
			if (!memcmp(szValuePtr, "\xFE\xFF", 2)) {
				decode = "UCS-2BE";
				szValuePtr = szValuePtr+2;
				ByteCount -= 2;
			} else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) {
				decode = "UCS-2LE";
				szValuePtr = szValuePtr+2;
				ByteCount -= 2;
			} else if (ImageInfo->motorola_intel) {
				decode = ImageInfo->decode_unicode_be;
			} else {
				decode = ImageInfo->decode_unicode_le;
			}
			/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX   */
			if (zend_multibyte_encoding_converter(
					(unsigned char**)pszInfoPtr, 
					&len, 
					(unsigned char*)szValuePtr,
					ByteCount,
					zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC),
					zend_multibyte_fetch_encoding(decode TSRMLS_CC)
					TSRMLS_CC) == (size_t)-1) {
				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
			}
			return len;
		} else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) {
			*pszEncoding = estrdup((const char*)szValuePtr);
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
		} else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) {
			/* JIS should be tanslated to MB or we leave it to the user - leave it to the user */
			*pszEncoding = estrdup((const char*)szValuePtr);
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
			/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX   */
			if (zend_multibyte_encoding_converter(
					(unsigned char**)pszInfoPtr, 
					&len, 
					(unsigned char*)szValuePtr,
					ByteCount,
					zend_multibyte_fetch_encoding(ImageInfo->encode_jis TSRMLS_CC),
					zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le TSRMLS_CC)
					TSRMLS_CC) == (size_t)-1) {
				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
			}
			return len;
		} else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) {
			/* 8 NULL means undefined and should be ASCII... */
			*pszEncoding = estrdup("UNDEFINED");
			szValuePtr = szValuePtr+8;
			ByteCount -= 8;
		}
	}

	/* Olympus has this padded with trailing spaces.  Remove these first. */
	if (ByteCount>0) {
		for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) {
			(szValuePtr)[a] = '\0';
		}
	}

	/* normal text without encoding */
	exif_process_string(pszInfoPtr, szValuePtr, ByteCount TSRMLS_CC);
	return strlen(*pszInfoPtr);
}
/* }}} */

/* {{{ exif_process_unicode
 * Process unicode field in IFD. */
static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount TSRMLS_DC)
{
	xp_field->tag = tag;	
	xp_field->value = NULL;
	/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX   */
	if (zend_multibyte_encoding_converter(
			(unsigned char**)&xp_field->value, 
			&xp_field->size, 
			(unsigned char*)szValuePtr,
			ByteCount,
			zend_multibyte_fetch_encoding(ImageInfo->encode_unicode TSRMLS_CC),
			zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le TSRMLS_CC)
			TSRMLS_CC) == (size_t)-1) {
		xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount);
	}
	return xp_field->size;
}
/* }}} */

/* {{{ exif_process_IFD_in_MAKERNOTE
 * Process nested IFDs directories in Maker Note. */
static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, char *offset_base, size_t IFDlength, size_t displacement TSRMLS_DC)
{
	int de, i=0, section_index = SECTION_MAKERNOTE;
	int NumDirEntries, old_motorola_intel, offset_diff;
	const maker_note_type *maker_note;
	char *dir_start;

	for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) {
		if (i==sizeof(maker_note_array)/sizeof(maker_note_type))
			return FALSE;
		maker_note = maker_note_array+i;
		
		/*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/
		if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make)))
			continue;
		if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model)))
			continue;
		if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len))
			continue;
		break;
	}

	dir_start = value_ptr + maker_note->offset;

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s @x%04X + 0x%04X=%d: %s", exif_get_sectionname(section_index), (int)dir_start-(int)offset_base+maker_note->offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (int)dir_start-(int)offset_base+maker_note->offset+displacement));
#endif

	ImageInfo->sections_found |= FOUND_MAKERNOTE;

	old_motorola_intel = ImageInfo->motorola_intel;
	switch (maker_note->byte_order) {
		case MN_ORDER_INTEL:
			ImageInfo->motorola_intel = 0;
			break;
		case MN_ORDER_MOTOROLA:
			ImageInfo->motorola_intel = 1;
			break;
		default:
		case MN_ORDER_NORMAL:
			break;
	}

	NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);

	switch (maker_note->offset_mode) {
		case MN_OFFSET_MAKER:
			offset_base = value_ptr;
			break;
		case MN_OFFSET_GUESS:
			offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Using automatic offset correction: 0x%04X", ((int)dir_start-(int)offset_base+maker_note->offset+displacement) + offset_diff);
#endif
			offset_base = value_ptr + offset_diff;
			break;
		default:
		case MN_OFFSET_NORMAL:
			break;
	}

	if ((2+NumDirEntries*12) > value_len) {
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + x%04X*12 = x%04X > x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
		return FALSE;
	}

	for (de=0;de<NumDirEntries;de++) {
		if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
								  offset_base, IFDlength, displacement, section_index, 0, maker_note->tag_table TSRMLS_CC)) {
			return FALSE;
		}
	}
	ImageInfo->motorola_intel = old_motorola_intel;
/*	NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE));
#endif
	return TRUE;
}
/* }}} */

/* {{{ exif_process_IFD_TAG
 * Process one of the nested IFDs directories. */
static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table TSRMLS_DC)
{
	size_t length;
	int tag, format, components;
	char *value_ptr, tagname[64], cbuf[32], *outside=NULL;
	size_t byte_count, offset_val, fpos, fgot;
	int64_t byte_count_signed;
	xp_field_type *tmp_xp;
#ifdef EXIF_DEBUG
	char *dump_data;
	int dump_free;
#endif /* EXIF_DEBUG */

	/* Protect against corrupt headers */
	if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached");
		return FALSE;
	}
	ImageInfo->ifd_nesting_level++;

	tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel);
	format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
	components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);

	if (!format || format > NUM_FORMATS) {
		/* (-1) catches illegal zero case as unsigned underflows to positive large. */
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), format);
		format = TAG_FMT_BYTE;
		/*return TRUE;*/
	}

	if (components < 0) {
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%ld)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), components);
		return FALSE;
	}

	byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format];

	if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) {
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal byte_count", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC));
		return FALSE;
	}

	byte_count = (size_t)byte_count_signed;

	if (byte_count > 4) {
		offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
		/* If its bigger than 4 bytes, the dir entry contains an offset. */
		value_ptr = offset_base+offset_val;
        /* 
            dir_entry is ImageInfo->file.list[sn].data+2+i*12
            offset_base is ImageInfo->file.list[sn].data-dir_offset 
            dir_entry - offset_base is dir_offset+2+i*12
        */
		if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) {
			/* It is important to check for IMAGE_FILETYPE_TIFF
			 * JPEG does not use absolute pointers instead its pointers are
			 * relative to the start of the TIFF header in APP1 section. */
			if (byte_count > ImageInfo->FileSize || offset_val>ImageInfo->FileSize-byte_count || (ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_II && ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_MM && ImageInfo->FileType!=IMAGE_FILETYPE_JPEG)) {
				if (value_ptr < dir_entry) {
					/* we can read this if offset_val > 0 */
					/* some files have their values in other parts of the file */
					exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X < x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val, dir_entry);
				} else {
					/* this is for sure not allowed */
					/* exception are IFD pointers */
					exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val, byte_count, offset_val+byte_count, IFDlength);
				}
				return FALSE;
			}
			if (byte_count>sizeof(cbuf)) {
				/* mark as outside range and get buffer */
				value_ptr = safe_emalloc(byte_count, 1, 0);
				outside = value_ptr;
			} else {
				/* In most cases we only access a small range so
				 * it is faster to use a static buffer there
				 * BUT it offers also the possibility to have
				 * pointers read without the need to free them
				 * explicitley before returning. */
				memset(&cbuf, 0, sizeof(cbuf));
				value_ptr = cbuf;
			}

			fpos = php_stream_tell(ImageInfo->infile);
			php_stream_seek(ImageInfo->infile, offset_val, SEEK_SET);
			fgot = php_stream_tell(ImageInfo->infile);
			if (fgot!=offset_val) {
				EFREE_IF(outside);
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, offset_val);
				return FALSE;
			}
			fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count);
			php_stream_seek(ImageInfo->infile, fpos, SEEK_SET);
			if (fgot<byte_count) {
				EFREE_IF(outside);
				EXIF_ERRLOG_FILEEOF(ImageInfo)
				return FALSE;
			}
		}
	} else {
		/* 4 bytes or less and value is in the dir entry itself */
		value_ptr = dir_entry+8;
		offset_val= value_ptr-offset_base;
	}

	ImageInfo->sections_found |= FOUND_ANY_TAG;
#ifdef EXIF_DEBUG
	dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr TSRMLS_CC);
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s", tag, exif_get_tagname(tag, tagname, -12, tag_table TSRMLS_CC), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data);
	if (dump_free) {
		efree(dump_data);
	}
#endif

	if (section_index==SECTION_THUMBNAIL) {
		if (!ImageInfo->Thumbnail.data) {
			switch(tag) {
				case TAG_IMAGEWIDTH:
				case TAG_COMP_IMAGE_WIDTH:
					ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
					break;
	
				case TAG_IMAGEHEIGHT:
				case TAG_COMP_IMAGE_HEIGHT:
					ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
					break;
	
				case TAG_STRIP_OFFSETS:
				case TAG_JPEG_INTERCHANGE_FORMAT:
					/* accept both formats */
					ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
					break;
	
				case TAG_STRIP_BYTE_COUNTS:
					if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) {
						ImageInfo->Thumbnail.filetype = ImageInfo->FileType;
					} else {
						/* motorola is easier to read */
						ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM;
					}
					ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
					break;
	
				case TAG_JPEG_INTERCHANGE_FORMAT_LEN:
					if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) {
						ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG;
						ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
					}
					break;
			}
		}
	} else {
		if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF)
		switch(tag) {
			case TAG_COPYRIGHT:
				/* check for "<photographer> NUL <editor> NUL" */
				if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) {
					if (length<byte_count-1) {
						/* When there are any characters after the first NUL */
						ImageInfo->CopyrightPhotographer  = estrdup(value_ptr);
						ImageInfo->CopyrightEditor        = estrdup(value_ptr+length+1);
						spprintf(&ImageInfo->Copyright, 0, "%s, %s", value_ptr, value_ptr+length+1);
						/* format = TAG_FMT_UNDEFINED; this musn't be ASCII         */
						/* but we are not supposed to change this                   */
						/* keep in mind that image_info does not store editor value */
					} else {
						ImageInfo->Copyright = estrdup(value_ptr);
					}
				}
				break;   

			case TAG_USERCOMMENT:
				ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count TSRMLS_CC);
				break;

			case TAG_XP_TITLE:
			case TAG_XP_COMMENTS:
			case TAG_XP_AUTHOR:
			case TAG_XP_KEYWORDS:
			case TAG_XP_SUBJECT:
				tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0);
				ImageInfo->sections_found |= FOUND_WINXP;
				ImageInfo->xp_fields.list = tmp_xp;
				ImageInfo->xp_fields.count++;
				exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count TSRMLS_CC);
				break;

			case TAG_FNUMBER:
				/* Simplest way of expressing aperture, so I trust it the most.
				   (overwrite previously computed value if there is one) */
				ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
				break;

			case TAG_APERTURE:
			case TAG_MAX_APERTURE:
				/* More relevant info always comes earlier, so only use this field if we don't
				   have appropriate aperture information yet. */
				if (ImageInfo->ApertureFNumber == 0) {
					ImageInfo->ApertureFNumber
						= (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)*0.5);
				}
				break;

			case TAG_SHUTTERSPEED:
				/* More complicated way of expressing exposure time, so only use
				   this value if we don't already have it from somewhere else.
				   SHUTTERSPEED comes after EXPOSURE TIME
				  */
				if (ImageInfo->ExposureTime == 0) {
					ImageInfo->ExposureTime
						= (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)*log(2)));
				}
				break;
			case TAG_EXPOSURETIME:
				ImageInfo->ExposureTime = -1;
				break;

			case TAG_COMP_IMAGE_WIDTH:
				ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
				break;

			case TAG_FOCALPLANE_X_RES:
				ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
				break;

			case TAG_SUBJECT_DISTANCE:
				/* Inidcates the distacne the autofocus camera is focused to.
				   Tends to be less accurate as distance increases. */
				ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC);
				break;

			case TAG_FOCALPLANE_RESOLUTION_UNIT:
				switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel TSRMLS_CC)) {
					case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */
					case 2:
						/* According to the information I was using, 2 measn meters.
						   But looking at the Cannon powershot's files, inches is the only
						   sensible value. */
						ImageInfo->FocalplaneUnits = 25.4;
						break;

					case 3: ImageInfo->FocalplaneUnits = 10;   break;  /* centimeter */
					case 4: ImageInfo->FocalplaneUnits = 1;    break;  /* milimeter  */
					case 5: ImageInfo->FocalplaneUnits = .001; break;  /* micrometer */
				}
				break;

			case TAG_SUB_IFD:
				if (format==TAG_FMT_IFD) {
					/* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */
					/* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */
					/* JPEG do we have the data area and what to do with it */
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD");
				}
				break;

			case TAG_MAKE:
				ImageInfo->make = estrdup(value_ptr);
				break;
			case TAG_MODEL:
				ImageInfo->model = estrdup(value_ptr);
				break;

			case TAG_MAKER_NOTE:
				exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement TSRMLS_CC);
				break;

			case TAG_EXIF_IFD_POINTER:
			case TAG_GPS_IFD_POINTER:
			case TAG_INTEROP_IFD_POINTER:
				if (ReadNextIFD) {
					char *Subdir_start;
					int sub_section_index = 0;
					switch(tag) {
						case TAG_EXIF_IFD_POINTER:
#ifdef EXIF_DEBUG
							exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF");
#endif
							ImageInfo->sections_found |= FOUND_EXIF;
							sub_section_index = SECTION_EXIF;
							break;
						case TAG_GPS_IFD_POINTER:
#ifdef EXIF_DEBUG
							exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS");
#endif
							ImageInfo->sections_found |= FOUND_GPS;
							sub_section_index = SECTION_GPS;
							break;
						case TAG_INTEROP_IFD_POINTER:
#ifdef EXIF_DEBUG
							exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY");
#endif
							ImageInfo->sections_found |= FOUND_INTEROP;
							sub_section_index = SECTION_INTEROP;
							break;
					}
					Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel);
					if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) {
						exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer");
						return FALSE;
					}
					if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index TSRMLS_CC)) {
						return FALSE;
					}
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index));
#endif
				}
		}
	}
	exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table TSRMLS_CC), tag, format, components, value_ptr TSRMLS_CC);
	EFREE_IF(outside);
	return TRUE;
}
/* }}} */

/* {{{ exif_process_IFD_in_JPEG
 * Process one of the nested IFDs directories. */
static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index TSRMLS_DC)
{
	int de;
	int NumDirEntries;
	int NextDirOffset;

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength);
#endif

	ImageInfo->sections_found |= FOUND_IFD0;

	NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel);

	if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) {
		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: x%04X + 2 + x%04X*12 = x%04X > x%04X", (int)((size_t)dir_start+2-(size_t)offset_base), NumDirEntries, (int)((size_t)dir_start+2+NumDirEntries*12-(size_t)offset_base), IFDlength);
		return FALSE;
	}

	for (de=0;de<NumDirEntries;de++) {
		if (!exif_process_IFD_TAG(ImageInfo, dir_start + 2 + 12 * de,
								  offset_base, IFDlength, displacement, section_index, 1, exif_get_tag_table(section_index) TSRMLS_CC)) {
			return FALSE;
		}
	}
	/*
	 * Ignore IFD2 if it purportedly exists
	 */
	if (section_index == SECTION_THUMBNAIL) {
		return TRUE;
	}
	/*
	 * Hack to make it process IDF1 I hope
	 * There are 2 IDFs, the second one holds the keys (0x0201 and 0x0202) to the thumbnail
	 */
	NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);
	if (NextDirOffset) {
		/* the next line seems false but here IFDlength means length of all IFDs */
		if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) {
			exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset");
			return FALSE;
		}
		/* That is the IFD for the first thumbnail */
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail");
#endif
		if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL TSRMLS_CC)) {
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size);
#endif
			if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
			&&  ImageInfo->Thumbnail.size
			&&  ImageInfo->Thumbnail.offset
			&&  ImageInfo->read_thumbnail
			) {
				exif_thumbnail_extract(ImageInfo, offset_base, IFDlength TSRMLS_CC);
			}
			return TRUE;
		} else {
			return FALSE;
		}
	}
	return TRUE;
}
/* }}} */

/* {{{ exif_process_TIFF_in_JPEG
   Process a TIFF header in a JPEG file
*/
static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
{
	unsigned exif_value_2a, offset_of_ifd;

	/* set the thumbnail stuff to nothing so we can test to see if they get set up */
	if (memcmp(CharBuf, "II", 2) == 0) {
		ImageInfo->motorola_intel = 0;
	} else if (memcmp(CharBuf, "MM", 2) == 0) {
		ImageInfo->motorola_intel = 1;
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker");
		return;
	}

	/* Check the next two values for correctness. */
	exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel);
	offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel);
	if ( exif_value_2a != 0x2a || offset_of_ifd < 0x08) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)");
		return;
	}
	if (offset_of_ifd > length) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start");
		return;
	}

	ImageInfo->sections_found |= FOUND_IFD0;
	/* First directory starts at offset 8. Offsets starts at 0. */
	exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0 TSRMLS_CC);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done");
#endif

	/* Compute the CCD width, in milimeters. */
	if (ImageInfo->FocalplaneXRes != 0) {
		ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes);
	}
}
/* }}} */

/* {{{ exif_process_APP1
   Process an JPEG APP1 block marker
   Describes all the drivel that most digital cameras include...
*/
static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement TSRMLS_DC)
{
	/* Check the APP1 for Exif Identifier Code */
	static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
	if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code");
		return;
	}
	exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8 TSRMLS_CC);
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done");
#endif
}
/* }}} */

/* {{{ exif_process_APP12
   Process an JPEG APP12 block marker used by OLYMPUS
*/
static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length TSRMLS_DC)
{
	size_t l1, l2=0;

	if ((l1 = php_strnlen(buffer+2, length-2)) > 0) {
		exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2 TSRMLS_CC);
		if (length > 2+l1+1) {
			l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1);
			exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1 TSRMLS_CC);
		}
	}
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2);
#endif
}
/* }}} */

/* {{{ exif_scan_JPEG_header
 * Parse the marker stream until SOS or EOI is seen; */
static int exif_scan_JPEG_header(image_info_type *ImageInfo TSRMLS_DC)
{
	int section, sn;
	int marker = 0, last_marker = M_PSEUDO, comment_correction=1;
	unsigned int ll, lh;
	uchar *Data;
	size_t fpos, size, got, itemlen;
	jpeg_sof_info  sof_info;

	for(section=0;;section++) {
#ifdef EXIF_DEBUG
		fpos = php_stream_tell(ImageInfo->infile);
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos);
#endif

		/* get marker byte, swallowing possible padding                           */
		/* some software does not count the length bytes of COM section           */
		/* one company doing so is very much envolved in JPEG... so we accept too */
		if (last_marker==M_COM && comment_correction) {
			comment_correction = 2;
		}
		do {
			if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) {
				EXIF_ERRLOG_CORRUPT(ImageInfo)
				return FALSE;
			}
			if (last_marker==M_COM && comment_correction>0) {
				if (marker!=0xFF) {
					marker = 0xff;
					comment_correction--;
				} else  {
					last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */
				}
			}
		} while (marker == 0xff);
		if (last_marker==M_COM && !comment_correction) {
			exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information");
		}
		if (last_marker==M_COM && comment_correction)
			return M_EOI; /* ah illegal: char after COM section not 0xFF */

		fpos = php_stream_tell(ImageInfo->infile);

		if (marker == 0xff) {
			/* 0xff is legal padding, but if we get that many, something's wrong. */
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes");
			return FALSE;
		}

		/* Read the length of the section. */
		if ((lh = php_stream_getc(ImageInfo->infile)) == EOF) {
			EXIF_ERRLOG_CORRUPT(ImageInfo)
			return FALSE;
		}
		if ((ll = php_stream_getc(ImageInfo->infile)) == EOF) {
			EXIF_ERRLOG_CORRUPT(ImageInfo)
			return FALSE;
		}

		itemlen = (lh << 8) | ll;

		if (itemlen < 2) {
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll);
#else
			EXIF_ERRLOG_CORRUPT(ImageInfo)
#endif
			return FALSE;
		}

		sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL);
		Data = ImageInfo->file.list[sn].data;

		/* Store first two pre-read bytes. */
		Data[0] = (uchar)lh;
		Data[1] = (uchar)ll;

		got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */
		if (got != itemlen-2) {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error reading from file: got=x%04X(=%d) != itemlen-2=x%04X(=%d)", got, got, itemlen-2, itemlen-2);
			return FALSE;
		}

#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section(x%02X=%s) @ x%04X + x%04X(=%d)", marker, exif_get_markername(marker), fpos, itemlen, itemlen);
#endif
		switch(marker) {
			case M_SOS:   /* stop before hitting compressed data  */
				/* If reading entire image is requested, read the rest of the data. */
				if (ImageInfo->read_all) {
					/* Determine how much file is left. */
					fpos = php_stream_tell(ImageInfo->infile);
					size = ImageInfo->FileSize - fpos;
					sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL);
					Data = ImageInfo->file.list[sn].data;
					got = php_stream_read(ImageInfo->infile, (char*)Data, size);
					if (got != size) {
						EXIF_ERRLOG_FILEEOF(ImageInfo)
						return FALSE;
					}
				}
				return TRUE;

			case M_EOI:   /* in case it's a tables-only JPEG stream */
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!");
				return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE;

			case M_COM: /* Comment section */
				exif_process_COM(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
				break;

			case M_EXIF:
				if (!(ImageInfo->sections_found&FOUND_IFD0)) {
					/*ImageInfo->sections_found |= FOUND_EXIF;*/
					/* Seen files from some 'U-lead' software with Vivitar scanner
					   that uses marker 31 later in the file (no clue what for!) */
					exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos TSRMLS_CC);
				}
				break;

			case M_APP12:
				exif_process_APP12(ImageInfo, (char *)Data, itemlen TSRMLS_CC);
				break;


			case M_SOF0:
			case M_SOF1:
			case M_SOF2:
			case M_SOF3:
			case M_SOF5:
			case M_SOF6:
			case M_SOF7:
			case M_SOF9:
			case M_SOF10:
			case M_SOF11:
			case M_SOF13:
			case M_SOF14:
			case M_SOF15:
				if ((itemlen - 2) < 6) {
					return FALSE;
				}
		
				exif_process_SOFn(Data, marker, &sof_info);
				ImageInfo->Width  = sof_info.width;
				ImageInfo->Height = sof_info.height;
				if (sof_info.num_components == 3) {
					ImageInfo->IsColor = 1;
				} else {
					ImageInfo->IsColor = 0;
				}
				break;
			default:
				/* skip any other marker silently. */
				break;
		}

		/* keep track of last marker */
		last_marker = marker;
	}
#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done");
#endif
	return TRUE;
}
/* }}} */

/* {{{ exif_scan_thumbnail
 * scan JPEG in thumbnail (memory) */
static int exif_scan_thumbnail(image_info_type *ImageInfo TSRMLS_DC)
{
	uchar           c, *data = (uchar*)ImageInfo->Thumbnail.data;
	int             n, marker;
	size_t          length=2, pos=0;
	jpeg_sof_info   sof_info;

	if (!data) {
		return FALSE; /* nothing to do here */
	}
	if (memcmp(data, "\xFF\xD8\xFF", 3)) {
		if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image");
		}
		return FALSE;
	}
	for (;;) {
		pos += length;
		if (pos>=ImageInfo->Thumbnail.size) 
			return FALSE;
		c = data[pos++];
		if (pos>=ImageInfo->Thumbnail.size) 
			return FALSE;
		if (c != 0xFF) {
			return FALSE;
		}
		n = 8;
		while ((c = data[pos++]) == 0xFF && n--) {
			if (pos+3>=ImageInfo->Thumbnail.size) 
				return FALSE;
			/* +3 = pos++ of next check when reaching marker + 2 bytes for length */
		}
		if (c == 0xFF) 
			return FALSE;
		marker = c;
		length = php_jpg_get16(data+pos);
		if (pos+length>=ImageInfo->Thumbnail.size) {
			return FALSE;
		}
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process section(x%02X=%s) @ x%04X + x%04X", marker, exif_get_markername(marker), pos, length);
#endif
		switch (marker) {
			case M_SOF0:
			case M_SOF1:
			case M_SOF2:
			case M_SOF3:
			case M_SOF5:
			case M_SOF6:
			case M_SOF7:
			case M_SOF9:
			case M_SOF10:
			case M_SOF11:
			case M_SOF13:
			case M_SOF14:
			case M_SOF15:
				/* handle SOFn block */
				exif_process_SOFn(data+pos, marker, &sof_info);
				ImageInfo->Thumbnail.height   = sof_info.height;
				ImageInfo->Thumbnail.width    = sof_info.width;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height);
#endif
				return TRUE;

			case M_SOS:
			case M_EOI:
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
				return FALSE;
				break;

			default:
				/* just skip */
				break;
		}
	}

	exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail");
	return FALSE;
}
/* }}} */

/* {{{ exif_process_IFD_in_TIFF
 * Parse the TIFF header; */
static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index TSRMLS_DC)
{
	int i, sn, num_entries, sub_section_index = 0;
	unsigned char *dir_entry;
	char tagname[64];
	size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot;
	int entry_tag , entry_type;
	tag_table_type tag_table = exif_get_tag_table(section_index);

	if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) {
                return FALSE;
        }

	if (ImageInfo->FileSize >= dir_offset+2) {
		sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL);
#ifdef EXIF_DEBUG
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, 2);
#endif
		php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */
		php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2);
		num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel);
		dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
		if (ImageInfo->FileSize >= dir_offset+dir_size) {
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X), IFD entries(%d)", ImageInfo->FileSize, dir_offset+2, dir_size-2, num_entries);
#endif
			if (exif_file_sections_realloc(ImageInfo, sn, dir_size TSRMLS_CC)) {
				return FALSE;
			}
			php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2);
			/*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/
			next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset);
#endif
			/* now we have the directory we can look how long it should be */
			ifd_size = dir_size;
			for(i=0;i<num_entries;i++) {
				dir_entry 	 = ImageInfo->file.list[sn].data+2+i*12;
				entry_tag    = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
				entry_type   = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
				if (entry_type > NUM_FORMATS) {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname(entry_tag, tagname, -12, tag_table TSRMLS_CC), entry_type);
					/* Since this is repeated in exif_process_IFD_TAG make it a notice here */
					/* and make it a warning in the exif_process_IFD_TAG which is called    */
					/* elsewhere. */
					entry_type = TAG_FMT_BYTE;
					/*The next line would break the image on writeback: */
					/* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/
				}
				entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type];
				if (entry_length <= 4) {
					switch(entry_type) {
						case TAG_FMT_USHORT:
							entry_value  = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel);
							break;
						case TAG_FMT_SSHORT:
							entry_value  = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel);
							break;
						case TAG_FMT_ULONG:
							entry_value  = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
							break;
						case TAG_FMT_SLONG:
							entry_value  = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel);
							break;
					}
					switch(entry_tag) {
						case TAG_IMAGEWIDTH:
						case TAG_COMP_IMAGE_WIDTH:
							ImageInfo->Width  = entry_value;
							break;
						case TAG_IMAGEHEIGHT:
						case TAG_COMP_IMAGE_HEIGHT:
							ImageInfo->Height = entry_value;
							break;
						case TAG_PHOTOMETRIC_INTERPRETATION:
							switch (entry_value) {
								case PMI_BLACK_IS_ZERO:
								case PMI_WHITE_IS_ZERO:
								case PMI_TRANSPARENCY_MASK:
									ImageInfo->IsColor = 0;
									break;
								case PMI_RGB:
								case PMI_PALETTE_COLOR:
								case PMI_SEPARATED:
								case PMI_YCBCR:
								case PMI_CIELAB:
									ImageInfo->IsColor = 1;
									break;
							}
							break;
					}
				} else {
					entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
					/* if entry needs expading ifd cache and entry is at end of current ifd cache. */
					/* otherwise there may be huge holes between two entries */
					if (entry_offset + entry_length > dir_offset + ifd_size
					  && entry_offset == dir_offset + ifd_size) {
						ifd_size = entry_offset + entry_length - dir_offset;
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Resize struct: x%04X + x%04X - x%04X = x%04X", entry_offset, entry_length, dir_offset, ifd_size);
#endif
					}
				}
			}
			if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) {
				if (ifd_size > dir_size) {
					if (dir_offset + ifd_size > ImageInfo->FileSize) {
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
						return FALSE;
					}
					if (exif_file_sections_realloc(ImageInfo, sn, ifd_size TSRMLS_CC)) {
						return FALSE;
					}
					/* read values not stored in directory itself */
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size);
#endif
					php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size);
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done");
#endif
				}
				/* now process the tags */
				for(i=0;i<num_entries;i++) {
					dir_entry 	 = ImageInfo->file.list[sn].data+2+i*12;
					entry_tag    = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel);
					entry_type   = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel);
					/*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/
					if (entry_tag == TAG_EXIF_IFD_POINTER ||
						entry_tag == TAG_INTEROP_IFD_POINTER ||
						entry_tag == TAG_GPS_IFD_POINTER ||
						entry_tag == TAG_SUB_IFD
					) {
						switch(entry_tag) {
							case TAG_EXIF_IFD_POINTER:
								ImageInfo->sections_found |= FOUND_EXIF;
								sub_section_index = SECTION_EXIF;
								break;
							case TAG_GPS_IFD_POINTER:
								ImageInfo->sections_found |= FOUND_GPS;
								sub_section_index = SECTION_GPS;
								break;
							case TAG_INTEROP_IFD_POINTER:
								ImageInfo->sections_found |= FOUND_INTEROP;
								sub_section_index = SECTION_INTEROP;
								break;
							case TAG_SUB_IFD:
								ImageInfo->sections_found |= FOUND_THUMBNAIL;
								sub_section_index = SECTION_THUMBNAIL;
								break;
						}
						entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel);
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset);
#endif
						ImageInfo->ifd_nesting_level++;
						exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index TSRMLS_CC);
						if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) {
							if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN
							&&  ImageInfo->Thumbnail.size
							&&  ImageInfo->Thumbnail.offset
							&&  ImageInfo->read_thumbnail
							) {
#ifdef EXIF_DEBUG
								exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
#endif
								if (!ImageInfo->Thumbnail.data) {
									ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
									php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
									fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
									if (fgot < ImageInfo->Thumbnail.size) {
										EXIF_ERRLOG_THUMBEOF(ImageInfo)
									}
									exif_thumbnail_build(ImageInfo TSRMLS_CC);
								}
							}
						}
#ifdef EXIF_DEBUG
						exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index));
#endif
					} else {
						if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry,
												  (char*)(ImageInfo->file.list[sn].data-dir_offset),
												  ifd_size, 0, section_index, 0, tag_table TSRMLS_CC)) {
							return FALSE;
						}
					}
				}
				/* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */
				if (next_offset && section_index != SECTION_THUMBNAIL) {
					/* this should be a thumbnail IFD */
					/* the thumbnail itself is stored at Tag=StripOffsets */
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset);
#endif
					ImageInfo->ifd_nesting_level++;
					exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL TSRMLS_CC);
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size);
#endif
					if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) {
						ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0);
						php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET);
						fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size);
						if (fgot < ImageInfo->Thumbnail.size) {
							EXIF_ERRLOG_THUMBEOF(ImageInfo)
						}
						exif_thumbnail_build(ImageInfo TSRMLS_CC);
					}
#ifdef EXIF_DEBUG
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done");
#endif
				}
				return TRUE;
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X)", ImageInfo->FileSize, dir_offset+ImageInfo->file.list[sn].size);
				return FALSE;
			}
		} else {
			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+dir_size);
			return FALSE;
		}
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than start of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+2);
		return FALSE;
	}
}
/* }}} */

/* {{{ exif_scan_FILE_header
 * Parse the marker stream until SOS or EOI is seen; */
static int exif_scan_FILE_header(image_info_type *ImageInfo TSRMLS_DC)
{
	unsigned char file_header[8];
	int ret = FALSE;

	ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN;

	if (ImageInfo->FileSize >= 2) {
		php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
		if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) {
			return FALSE;
		}
		if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) {
			ImageInfo->FileType = IMAGE_FILETYPE_JPEG;
			if (exif_scan_JPEG_header(ImageInfo TSRMLS_CC)) {
				ret = TRUE;
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file");
			}
		} else if (ImageInfo->FileSize >= 8) {
			if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) {
				return FALSE;
			}
			if (!memcmp(file_header, "II\x2A\x00", 4)) {
				ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II;
				ImageInfo->motorola_intel = 0;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format");
#endif
				ImageInfo->sections_found |= FOUND_IFD0;
				if (exif_process_IFD_in_TIFF(ImageInfo, 
											 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
											 SECTION_IFD0 TSRMLS_CC)) {
					ret = TRUE;
				} else {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
				}
			} else if (!memcmp(file_header, "MM\x00\x2a", 4)) {
				ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM;
				ImageInfo->motorola_intel = 1;
#ifdef EXIF_DEBUG
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format");
#endif
				ImageInfo->sections_found |= FOUND_IFD0;
				if (exif_process_IFD_in_TIFF(ImageInfo,
											 php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel),
											 SECTION_IFD0 TSRMLS_CC)) {
					ret = TRUE;
				} else {
					exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file");
				}
			} else {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported");
				return FALSE;
			}
		}
	} else {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize);
	}
	return ret;
}
/* }}} */

/* {{{ exif_discard_imageinfo
   Discard data scanned by exif_read_file.
*/
static int exif_discard_imageinfo(image_info_type *ImageInfo)
{
	int i;

	EFREE_IF(ImageInfo->FileName);
	EFREE_IF(ImageInfo->UserComment);
	EFREE_IF(ImageInfo->UserCommentEncoding);
	EFREE_IF(ImageInfo->Copyright);
	EFREE_IF(ImageInfo->CopyrightPhotographer);
	EFREE_IF(ImageInfo->CopyrightEditor);
	EFREE_IF(ImageInfo->Thumbnail.data);
	EFREE_IF(ImageInfo->encode_unicode);
	EFREE_IF(ImageInfo->decode_unicode_be);
	EFREE_IF(ImageInfo->decode_unicode_le);
	EFREE_IF(ImageInfo->encode_jis);
	EFREE_IF(ImageInfo->decode_jis_be);
	EFREE_IF(ImageInfo->decode_jis_le);
	EFREE_IF(ImageInfo->make);
	EFREE_IF(ImageInfo->model);
	for (i=0; i<ImageInfo->xp_fields.count; i++) {
		EFREE_IF(ImageInfo->xp_fields.list[i].value);
	}
	EFREE_IF(ImageInfo->xp_fields.list);
	for (i=0; i<SECTION_COUNT; i++) {
		exif_iif_free(ImageInfo, i);
	}
	exif_file_sections_free(ImageInfo);
	memset(ImageInfo, 0, sizeof(*ImageInfo));
	return TRUE;
}
/* }}} */

/* {{{ exif_read_file
 */
static int exif_read_file(image_info_type *ImageInfo, char *FileName, int read_thumbnail, int read_all TSRMLS_DC)
{
	int ret;
	struct stat st;

	/* Start with an empty image information structure. */
	memset(ImageInfo, 0, sizeof(*ImageInfo));

	ImageInfo->motorola_intel = -1; /* flag as unknown */

	ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH, NULL);
	if (!ImageInfo->infile) {
		exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file");
		return FALSE;
	}

	if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) {
		if (VCWD_STAT(FileName, &st) >= 0) {
			if ((st.st_mode & S_IFMT) != S_IFREG) {
				exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file");
				php_stream_close(ImageInfo->infile);
				return FALSE;
			}

			/* Store file date/time. */
			ImageInfo->FileDateTime = st.st_mtime;
			ImageInfo->FileSize = st.st_size;
			/*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/
		}
	} else {
		if (!ImageInfo->FileSize) {
			php_stream_seek(ImageInfo->infile, 0, SEEK_END);
			ImageInfo->FileSize = php_stream_tell(ImageInfo->infile);
			php_stream_seek(ImageInfo->infile, 0, SEEK_SET);
		}
	}

	php_basename(FileName, strlen(FileName), NULL, 0, &(ImageInfo->FileName), NULL TSRMLS_CC);
	ImageInfo->read_thumbnail = read_thumbnail;
	ImageInfo->read_all = read_all;
	ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN;

	ImageInfo->encode_unicode    = safe_estrdup(EXIF_G(encode_unicode));
	ImageInfo->decode_unicode_be = safe_estrdup(EXIF_G(decode_unicode_be));
	ImageInfo->decode_unicode_le = safe_estrdup(EXIF_G(decode_unicode_le));
	ImageInfo->encode_jis        = safe_estrdup(EXIF_G(encode_jis));
	ImageInfo->decode_jis_be     = safe_estrdup(EXIF_G(decode_jis_be));
	ImageInfo->decode_jis_le     = safe_estrdup(EXIF_G(decode_jis_le));


	ImageInfo->ifd_nesting_level = 0;

	/* Scan the JPEG headers. */
	ret = exif_scan_FILE_header(ImageInfo TSRMLS_CC);

	php_stream_close(ImageInfo->infile);
	return ret;
}
/* }}} */

/* {{{ proto array exif_read_data(string filename [, sections_needed [, sub_arrays[, read_thumbnail]]])
   Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */
PHP_FUNCTION(exif_read_data)
{
	char *p_name, *p_sections_needed = NULL;
	int p_name_len, p_sections_needed_len = 0;
	zend_bool sub_arrays=0, read_thumbnail=0, read_all=0;

	int i, ret, sections_needed=0;
	image_info_type ImageInfo;
	char tmp[64], *sections_str, *s;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p|sbb", &p_name, &p_name_len, &p_sections_needed, &p_sections_needed_len, &sub_arrays, &read_thumbnail) == FAILURE) {
		return;
	}

	memset(&ImageInfo, 0, sizeof(ImageInfo));

	if (p_sections_needed) {
		spprintf(&sections_str, 0, ",%s,", p_sections_needed);
		/* sections_str DOES start with , and SPACES are NOT allowed in names */
		s = sections_str;
		while (*++s) {
			if (*s == ' ') {
				*s = ',';
			}
		}

		for (i = 0; i < SECTION_COUNT; i++) {
			snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i));
			if (strstr(sections_str, tmp)) {
				sections_needed |= 1<<i;
			}
		}
		EFREE_IF(sections_str);
		/* now see what we need */
#ifdef EXIF_DEBUG
		sections_str = exif_get_sectionlist(sections_needed TSRMLS_CC);
		if (!sections_str) {
			RETURN_FALSE;
		}
		exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections needed: %s", sections_str[0] ? sections_str : "None");
		EFREE_IF(sections_str);
#endif
	}

	ret = exif_read_file(&ImageInfo, p_name, read_thumbnail, read_all TSRMLS_CC);
	sections_str = exif_get_sectionlist(ImageInfo.sections_found TSRMLS_CC);

#ifdef EXIF_DEBUG
	if (sections_str) 
		exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Sections found: %s", sections_str[0] ? sections_str : "None");
#endif

	ImageInfo.sections_found |= FOUND_COMPUTED|FOUND_FILE;/* do not inform about in debug*/

	if (ret == FALSE || (sections_needed && !(sections_needed&ImageInfo.sections_found))) {
		/* array_init must be checked at last! otherwise the array must be freed if a later test fails. */
		exif_discard_imageinfo(&ImageInfo);
	   	EFREE_IF(sections_str);
		RETURN_FALSE;
	}

	array_init(return_value);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section FILE");
#endif

	/* now we can add our information */
	exif_iif_add_str(&ImageInfo, SECTION_FILE, "FileName",      ImageInfo.FileName TSRMLS_CC);
	exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileDateTime",  ImageInfo.FileDateTime TSRMLS_CC);
	exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileSize",      ImageInfo.FileSize TSRMLS_CC);
	exif_iif_add_int(&ImageInfo, SECTION_FILE, "FileType",      ImageInfo.FileType TSRMLS_CC);
	exif_iif_add_str(&ImageInfo, SECTION_FILE, "MimeType",      (char*)php_image_type_to_mime_type(ImageInfo.FileType) TSRMLS_CC);
	exif_iif_add_str(&ImageInfo, SECTION_FILE, "SectionsFound", sections_str ? sections_str : "NONE" TSRMLS_CC);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Generate section COMPUTED");
#endif

	if (ImageInfo.Width>0 &&  ImageInfo.Height>0) {
		exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html"    TSRMLS_CC, "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height);
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height TSRMLS_CC);
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width",  ImageInfo.Width TSRMLS_CC);
	}
	exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor TSRMLS_CC);
	if (ImageInfo.motorola_intel != -1) {
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel TSRMLS_CC);
	}
	if (ImageInfo.FocalLength) {
		exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength" TSRMLS_CC, "%4.1Fmm", ImageInfo.FocalLength);
		if(ImageInfo.CCDWidth) {
			exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength" TSRMLS_CC, "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5));
		}
	}
	if(ImageInfo.CCDWidth) {
		exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth" TSRMLS_CC, "%dmm", (int)ImageInfo.CCDWidth);
	}
	if(ImageInfo.ExposureTime>0) {
		if(ImageInfo.ExposureTime <= 0.5) {
			exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime));
		} else {
			exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime" TSRMLS_CC, "%0.3F s", ImageInfo.ExposureTime);
		}
	}
	if(ImageInfo.ApertureFNumber) {
		exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber" TSRMLS_CC, "f/%.1F", ImageInfo.ApertureFNumber);
	}
	if(ImageInfo.Distance) {
		if(ImageInfo.Distance<0) {
			exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite" TSRMLS_CC);
		} else {
			exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance" TSRMLS_CC, "%0.2Fm", ImageInfo.Distance);
		}
	}
	if (ImageInfo.UserComment) {
		exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment TSRMLS_CC);
		if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) {
			exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding TSRMLS_CC);
		}
	}

	exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright",              ImageInfo.Copyright TSRMLS_CC);
	exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer TSRMLS_CC);
	exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor",       ImageInfo.CopyrightEditor TSRMLS_CC);

	for (i=0; i<ImageInfo.xp_fields.count; i++) {
		exif_iif_add_str(&ImageInfo, SECTION_WINXP, exif_get_tagname(ImageInfo.xp_fields.list[i].tag, NULL, 0, exif_get_tag_table(SECTION_WINXP) TSRMLS_CC), ImageInfo.xp_fields.list[i].value TSRMLS_CC);
	}
	if (ImageInfo.Thumbnail.size) {
		if (read_thumbnail) {
			/* not exif_iif_add_str : this is a buffer */
			exif_iif_add_tag(&ImageInfo, SECTION_THUMBNAIL, "THUMBNAIL", TAG_NONE, TAG_FMT_UNDEFINED, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.data TSRMLS_CC);
		}
		if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
			/* try to evaluate if thumbnail data is present */
			exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
		}
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.FileType", ImageInfo.Thumbnail.filetype TSRMLS_CC);
		exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Thumbnail.MimeType", (char*)php_image_type_to_mime_type(ImageInfo.Thumbnail.filetype) TSRMLS_CC);
	}
	if (ImageInfo.Thumbnail.width && ImageInfo.Thumbnail.height) {
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Height", ImageInfo.Thumbnail.height TSRMLS_CC);
		exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Thumbnail.Width",  ImageInfo.Thumbnail.width TSRMLS_CC);
	}
   	EFREE_IF(sections_str);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Adding image infos");
#endif

	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FILE       TSRMLS_CC);
	add_assoc_image_info(return_value, 1,          &ImageInfo, SECTION_COMPUTED   TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_ANY_TAG    TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_IFD0       TSRMLS_CC);
	add_assoc_image_info(return_value, 1,          &ImageInfo, SECTION_THUMBNAIL  TSRMLS_CC);
	add_assoc_image_info(return_value, 1,          &ImageInfo, SECTION_COMMENT    TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_EXIF       TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_GPS        TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_INTEROP    TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_FPIX       TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_APP12      TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_WINXP      TSRMLS_CC);
	add_assoc_image_info(return_value, sub_arrays, &ImageInfo, SECTION_MAKERNOTE  TSRMLS_CC);

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
#endif

	exif_discard_imageinfo(&ImageInfo);

#ifdef EXIF_DEBUG
	php_error_docref1(NULL TSRMLS_CC, Z_STRVAL_PP(p_name), E_NOTICE, "done");
#endif
}
/* }}} */

/* {{{ proto string exif_thumbnail(string filename [, &width, &height [, &imagetype]])
   Reads the embedded thumbnail */
PHP_FUNCTION(exif_thumbnail)
{
	zval *p_width = 0, *p_height = 0, *p_imagetype = 0;
	char *p_name;
	int p_name_len, ret, arg_c = ZEND_NUM_ARGS();
	image_info_type ImageInfo;

	memset(&ImageInfo, 0, sizeof(ImageInfo));

	if (arg_c!=1 && arg_c!=3 && arg_c!=4) {
		WRONG_PARAM_COUNT;
	}

	if (zend_parse_parameters(arg_c TSRMLS_CC, "p|z/z/z/", &p_name, &p_name_len, &p_width, &p_height, &p_imagetype) == FAILURE) {
		return;
	}

	ret = exif_read_file(&ImageInfo, p_name, 1, 0 TSRMLS_CC);
	if (ret==FALSE) {
		exif_discard_imageinfo(&ImageInfo);
		RETURN_FALSE;
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Thumbnail data %d %d %d, %d x %d", ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, ImageInfo.Thumbnail.filetype, ImageInfo.Thumbnail.width, ImageInfo.Thumbnail.height);
#endif
	if (!ImageInfo.Thumbnail.data || !ImageInfo.Thumbnail.size) {
		exif_discard_imageinfo(&ImageInfo);
		RETURN_FALSE;
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Returning thumbnail(%d)", ImageInfo.Thumbnail.size);
#endif

	ZVAL_STRINGL(return_value, ImageInfo.Thumbnail.data, ImageInfo.Thumbnail.size, 1);
	if (arg_c >= 3) {
		if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) {
			exif_scan_thumbnail(&ImageInfo TSRMLS_CC);
		}
		zval_dtor(p_width);
		zval_dtor(p_height);
		ZVAL_LONG(p_width,  ImageInfo.Thumbnail.width);
		ZVAL_LONG(p_height, ImageInfo.Thumbnail.height);
	}
	if (arg_c >= 4)	{
		zval_dtor(p_imagetype);
		ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype);
	}

#ifdef EXIF_DEBUG
	exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info");
#endif

	exif_discard_imageinfo(&ImageInfo);

#ifdef EXIF_DEBUG
	php_error_docref1(NULL TSRMLS_CC, p_name, E_NOTICE, "Done");
#endif
}
/* }}} */

/* {{{ proto int exif_imagetype(string imagefile)
   Get the type of an image */
PHP_FUNCTION(exif_imagetype)
{
	char *imagefile;
	int imagefile_len;
	php_stream * stream;
 	int itype = 0;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &imagefile, &imagefile_len) == FAILURE) {
		return;
	}

	stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL);

	if (stream == NULL) {
		RETURN_FALSE;
	}

	itype = php_getimagetype(stream, NULL TSRMLS_CC);

	php_stream_close(stream);

	if (itype == IMAGE_FILETYPE_UNKNOWN) {
		RETURN_FALSE;
	} else {
		ZVAL_LONG(return_value, itype);
	}
}
/* }}} */

#endif

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 tw=78 fdm=marker
 * vim<600: sw=4 ts=4 tw=78
 */