summaryrefslogtreecommitdiffstats
path: root/services/camera/libcameraservice/device3/Camera3Device.cpp
blob: 24df8193b12a74687e79506a1d4fcab26f008ede (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
/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "Camera3-Device"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0
//#define LOG_NNDEBUG 0  // Per-frame verbose logging

#ifdef LOG_NNDEBUG
#define ALOGVV(...) ALOGV(__VA_ARGS__)
#else
#define ALOGVV(...) ((void)0)
#endif

// Convenience macro for transient errors
#define CLOGE(fmt, ...) ALOGE("Camera %d: %s: " fmt, mId, __FUNCTION__, \
            ##__VA_ARGS__)

// Convenience macros for transitioning to the error state
#define SET_ERR(fmt, ...) setErrorState(   \
    "%s: " fmt, __FUNCTION__,              \
    ##__VA_ARGS__)
#define SET_ERR_L(fmt, ...) setErrorStateLocked( \
    "%s: " fmt, __FUNCTION__,                    \
    ##__VA_ARGS__)

#include <inttypes.h>

#include <utils/Log.h>
#include <utils/Trace.h>
#include <utils/Timers.h>

#include "utils/CameraTraces.h"
#include "device3/Camera3Device.h"
#include "device3/Camera3OutputStream.h"
#include "device3/Camera3InputStream.h"
#include "device3/Camera3ZslStream.h"

using namespace android::camera3;

namespace android {

Camera3Device::Camera3Device(int id):
        mId(id),
        mHal3Device(NULL),
        mStatus(STATUS_UNINITIALIZED),
        mUsePartialResultQuirk(false),
        mNextResultFrameNumber(0),
        mNextShutterFrameNumber(0),
        mListener(NULL)
{
    ATRACE_CALL();
    camera3_callback_ops::notify = &sNotify;
    camera3_callback_ops::process_capture_result = &sProcessCaptureResult;
    ALOGV("%s: Created device for camera %d", __FUNCTION__, id);
}

Camera3Device::~Camera3Device()
{
    ATRACE_CALL();
    ALOGV("%s: Tearing down for camera id %d", __FUNCTION__, mId);
    disconnect();
}

int Camera3Device::getId() const {
    return mId;
}

/**
 * CameraDeviceBase interface
 */

status_t Camera3Device::initialize(camera_module_t *module)
{
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    ALOGV("%s: Initializing device for camera %d", __FUNCTION__, mId);
    if (mStatus != STATUS_UNINITIALIZED) {
        CLOGE("Already initialized!");
        return INVALID_OPERATION;
    }

    /** Open HAL device */

    status_t res;
    String8 deviceName = String8::format("%d", mId);

    camera3_device_t *device;

    ATRACE_BEGIN("camera3->open");
    res = module->common.methods->open(&module->common, deviceName.string(),
            reinterpret_cast<hw_device_t**>(&device));
    ATRACE_END();

    if (res != OK) {
        SET_ERR_L("Could not open camera: %s (%d)", strerror(-res), res);
        return res;
    }

    /** Cross-check device version */
    if (device->common.version < CAMERA_DEVICE_API_VERSION_3_0) {
        SET_ERR_L("Could not open camera: "
                "Camera device should be at least %x, reports %x instead",
                CAMERA_DEVICE_API_VERSION_3_0,
                device->common.version);
        device->common.close(&device->common);
        return BAD_VALUE;
    }

    camera_info info;
    res = module->get_camera_info(mId, &info);
    if (res != OK) return res;

    if (info.device_version != device->common.version) {
        SET_ERR_L("HAL reporting mismatched camera_info version (%x)"
                " and device version (%x).",
                info.device_version, device->common.version);
        device->common.close(&device->common);
        return BAD_VALUE;
    }

    /** Initialize device with callback functions */

    ATRACE_BEGIN("camera3->initialize");
    res = device->ops->initialize(device, this);
    ATRACE_END();

    if (res != OK) {
        SET_ERR_L("Unable to initialize HAL device: %s (%d)",
                strerror(-res), res);
        device->common.close(&device->common);
        return BAD_VALUE;
    }

    /** Start up status tracker thread */
    mStatusTracker = new StatusTracker(this);
    res = mStatusTracker->run(String8::format("C3Dev-%d-Status", mId).string());
    if (res != OK) {
        SET_ERR_L("Unable to start status tracking thread: %s (%d)",
                strerror(-res), res);
        device->common.close(&device->common);
        mStatusTracker.clear();
        return res;
    }

    /** Start up request queue thread */

    mRequestThread = new RequestThread(this, mStatusTracker, device);
    res = mRequestThread->run(String8::format("C3Dev-%d-ReqQueue", mId).string());
    if (res != OK) {
        SET_ERR_L("Unable to start request queue thread: %s (%d)",
                strerror(-res), res);
        device->common.close(&device->common);
        mRequestThread.clear();
        return res;
    }

    /** Everything is good to go */

    mDeviceVersion = device->common.version;
    mDeviceInfo = info.static_camera_characteristics;
    mHal3Device = device;
    mStatus = STATUS_UNCONFIGURED;
    mNextStreamId = 0;
    mNeedConfig = true;
    mPauseStateNotify = false;

    /** Check for quirks */

    // Will the HAL be sending in early partial result metadata?
    camera_metadata_entry partialResultsQuirk =
            mDeviceInfo.find(ANDROID_QUIRKS_USE_PARTIAL_RESULT);
    if (partialResultsQuirk.count > 0 && partialResultsQuirk.data.u8[0] == 1) {
        mUsePartialResultQuirk = true;
    }

    return OK;
}

status_t Camera3Device::disconnect() {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);

    ALOGV("%s: E", __FUNCTION__);

    status_t res = OK;

    {
        Mutex::Autolock l(mLock);
        if (mStatus == STATUS_UNINITIALIZED) return res;

        if (mStatus == STATUS_ACTIVE ||
                (mStatus == STATUS_ERROR && mRequestThread != NULL)) {
            res = mRequestThread->clearRepeatingRequests();
            if (res != OK) {
                SET_ERR_L("Can't stop streaming");
                // Continue to close device even in case of error
            } else {
                res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
                if (res != OK) {
                    SET_ERR_L("Timeout waiting for HAL to drain");
                    // Continue to close device even in case of error
                }
            }
        }

        if (mStatus == STATUS_ERROR) {
            CLOGE("Shutting down in an error state");
        }

        if (mStatusTracker != NULL) {
            mStatusTracker->requestExit();
        }

        if (mRequestThread != NULL) {
            mRequestThread->requestExit();
        }

        mOutputStreams.clear();
        mInputStream.clear();
    }

    // Joining done without holding mLock, otherwise deadlocks may ensue
    // as the threads try to access parent state
    if (mRequestThread != NULL && mStatus != STATUS_ERROR) {
        // HAL may be in a bad state, so waiting for request thread
        // (which may be stuck in the HAL processCaptureRequest call)
        // could be dangerous.
        mRequestThread->join();
    }

    if (mStatusTracker != NULL) {
        mStatusTracker->join();
    }

    {
        Mutex::Autolock l(mLock);

        mRequestThread.clear();
        mStatusTracker.clear();

        if (mHal3Device != NULL) {
            ATRACE_BEGIN("camera3->close");
            mHal3Device->common.close(&mHal3Device->common);
            ATRACE_END();
            mHal3Device = NULL;
        }

        mStatus = STATUS_UNINITIALIZED;
    }

    ALOGV("%s: X", __FUNCTION__);
    return res;
}

// For dumping/debugging only -
// try to acquire a lock a few times, eventually give up to proceed with
// debug/dump operations
bool Camera3Device::tryLockSpinRightRound(Mutex& lock) {
    bool gotLock = false;
    for (size_t i = 0; i < kDumpLockAttempts; ++i) {
        if (lock.tryLock() == NO_ERROR) {
            gotLock = true;
            break;
        } else {
            usleep(kDumpSleepDuration);
        }
    }
    return gotLock;
}

Camera3Device::Size Camera3Device::getMaxJpegResolution() const {
    int32_t maxJpegWidth = 0, maxJpegHeight = 0;
    if (mDeviceVersion >= CAMERA_DEVICE_API_VERSION_3_2) {
        const int STREAM_CONFIGURATION_SIZE = 4;
        const int STREAM_FORMAT_OFFSET = 0;
        const int STREAM_WIDTH_OFFSET = 1;
        const int STREAM_HEIGHT_OFFSET = 2;
        const int STREAM_IS_INPUT_OFFSET = 3;
        camera_metadata_ro_entry_t availableStreamConfigs =
                mDeviceInfo.find(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS);
        if (availableStreamConfigs.count == 0 ||
                availableStreamConfigs.count % STREAM_CONFIGURATION_SIZE != 0) {
            return Size(0, 0);
        }

        // Get max jpeg size (area-wise).
        for (size_t i=0; i < availableStreamConfigs.count; i+= STREAM_CONFIGURATION_SIZE) {
            int32_t format = availableStreamConfigs.data.i32[i + STREAM_FORMAT_OFFSET];
            int32_t width = availableStreamConfigs.data.i32[i + STREAM_WIDTH_OFFSET];
            int32_t height = availableStreamConfigs.data.i32[i + STREAM_HEIGHT_OFFSET];
            int32_t isInput = availableStreamConfigs.data.i32[i + STREAM_IS_INPUT_OFFSET];
            if (isInput == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT
                    && format == HAL_PIXEL_FORMAT_BLOB &&
                    (width * height > maxJpegWidth * maxJpegHeight)) {
                maxJpegWidth = width;
                maxJpegHeight = height;
            }
        }
    } else {
        camera_metadata_ro_entry availableJpegSizes =
                mDeviceInfo.find(ANDROID_SCALER_AVAILABLE_JPEG_SIZES);
        if (availableJpegSizes.count == 0 || availableJpegSizes.count % 2 != 0) {
            return Size(0, 0);
        }

        // Get max jpeg size (area-wise).
        for (size_t i = 0; i < availableJpegSizes.count; i += 2) {
            if ((availableJpegSizes.data.i32[i] * availableJpegSizes.data.i32[i + 1])
                    > (maxJpegWidth * maxJpegHeight)) {
                maxJpegWidth = availableJpegSizes.data.i32[i];
                maxJpegHeight = availableJpegSizes.data.i32[i + 1];
            }
        }
    }
    return Size(maxJpegWidth, maxJpegHeight);
}

ssize_t Camera3Device::getJpegBufferSize(uint32_t width, uint32_t height) const {
    // Get max jpeg size (area-wise).
    Size maxJpegResolution = getMaxJpegResolution();
    if (maxJpegResolution.width == 0) {
        ALOGE("%s: Camera %d: Can't find find valid available jpeg sizes in static metadata!",
                __FUNCTION__, mId);
        return BAD_VALUE;
    }

    // Get max jpeg buffer size
    ssize_t maxJpegBufferSize = 0;
    camera_metadata_ro_entry jpegBufMaxSize = mDeviceInfo.find(ANDROID_JPEG_MAX_SIZE);
    if (jpegBufMaxSize.count == 0) {
        ALOGE("%s: Camera %d: Can't find maximum JPEG size in static metadata!", __FUNCTION__, mId);
        return BAD_VALUE;
    }
    maxJpegBufferSize = jpegBufMaxSize.data.i32[0];

    // Calculate final jpeg buffer size for the given resolution.
    float scaleFactor = ((float) (width * height)) /
            (maxJpegResolution.width * maxJpegResolution.height);
    ssize_t jpegBufferSize = scaleFactor * maxJpegBufferSize;
    // Bound the buffer size to [MIN_JPEG_BUFFER_SIZE, maxJpegBufferSize].
    if (jpegBufferSize > maxJpegBufferSize) {
        jpegBufferSize = maxJpegBufferSize;
    } else if (jpegBufferSize < kMinJpegBufferSize) {
        jpegBufferSize = kMinJpegBufferSize;
    }

    return jpegBufferSize;
}

status_t Camera3Device::dump(int fd, const Vector<String16> &args) {
    ATRACE_CALL();
    (void)args;

    // Try to lock, but continue in case of failure (to avoid blocking in
    // deadlocks)
    bool gotInterfaceLock = tryLockSpinRightRound(mInterfaceLock);
    bool gotLock = tryLockSpinRightRound(mLock);

    ALOGW_IF(!gotInterfaceLock,
            "Camera %d: %s: Unable to lock interface lock, proceeding anyway",
            mId, __FUNCTION__);
    ALOGW_IF(!gotLock,
            "Camera %d: %s: Unable to lock main lock, proceeding anyway",
            mId, __FUNCTION__);

    String8 lines;

    const char *status =
            mStatus == STATUS_ERROR         ? "ERROR" :
            mStatus == STATUS_UNINITIALIZED ? "UNINITIALIZED" :
            mStatus == STATUS_UNCONFIGURED  ? "UNCONFIGURED" :
            mStatus == STATUS_CONFIGURED    ? "CONFIGURED" :
            mStatus == STATUS_ACTIVE        ? "ACTIVE" :
            "Unknown";

    lines.appendFormat("    Device status: %s\n", status);
    if (mStatus == STATUS_ERROR) {
        lines.appendFormat("    Error cause: %s\n", mErrorCause.string());
    }
    lines.appendFormat("    Stream configuration:\n");

    if (mInputStream != NULL) {
        write(fd, lines.string(), lines.size());
        mInputStream->dump(fd, args);
    } else {
        lines.appendFormat("      No input stream.\n");
        write(fd, lines.string(), lines.size());
    }
    for (size_t i = 0; i < mOutputStreams.size(); i++) {
        mOutputStreams[i]->dump(fd,args);
    }

    lines = String8("    In-flight requests:\n");
    if (mInFlightMap.size() == 0) {
        lines.append("      None\n");
    } else {
        for (size_t i = 0; i < mInFlightMap.size(); i++) {
            InFlightRequest r = mInFlightMap.valueAt(i);
            lines.appendFormat("      Frame %d |  Timestamp: %" PRId64 ", metadata"
                    " arrived: %s, buffers left: %d\n", mInFlightMap.keyAt(i),
                    r.captureTimestamp, r.haveResultMetadata ? "true" : "false",
                    r.numBuffersLeft);
        }
    }
    write(fd, lines.string(), lines.size());

    {
        lines = String8("    Last request sent:\n");
        write(fd, lines.string(), lines.size());

        CameraMetadata lastRequest = getLatestRequestLocked();
        lastRequest.dump(fd, /*verbosity*/2, /*indentation*/6);
    }

    if (mHal3Device != NULL) {
        lines = String8("    HAL device dump:\n");
        write(fd, lines.string(), lines.size());
        mHal3Device->ops->dump(mHal3Device, fd);
    }

    if (gotLock) mLock.unlock();
    if (gotInterfaceLock) mInterfaceLock.unlock();

    return OK;
}

const CameraMetadata& Camera3Device::info() const {
    ALOGVV("%s: E", __FUNCTION__);
    if (CC_UNLIKELY(mStatus == STATUS_UNINITIALIZED ||
                    mStatus == STATUS_ERROR)) {
        ALOGW("%s: Access to static info %s!", __FUNCTION__,
                mStatus == STATUS_ERROR ?
                "when in error state" : "before init");
    }
    return mDeviceInfo;
}

status_t Camera3Device::checkStatusOkToCaptureLocked() {
    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device not initialized");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
        case STATUS_ACTIVE:
            // OK
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }
    return OK;
}

status_t Camera3Device::convertMetadataListToRequestListLocked(
        const List<const CameraMetadata> &metadataList, RequestList *requestList) {
    if (requestList == NULL) {
        CLOGE("requestList cannot be NULL.");
        return BAD_VALUE;
    }

    int32_t burstId = 0;
    for (List<const CameraMetadata>::const_iterator it = metadataList.begin();
            it != metadataList.end(); ++it) {
        sp<CaptureRequest> newRequest = setUpRequestLocked(*it);
        if (newRequest == 0) {
            CLOGE("Can't create capture request");
            return BAD_VALUE;
        }

        // Setup burst Id and request Id
        newRequest->mResultExtras.burstId = burstId++;
        if (it->exists(ANDROID_REQUEST_ID)) {
            if (it->find(ANDROID_REQUEST_ID).count == 0) {
                CLOGE("RequestID entry exists; but must not be empty in metadata");
                return BAD_VALUE;
            }
            newRequest->mResultExtras.requestId = it->find(ANDROID_REQUEST_ID).data.i32[0];
        } else {
            CLOGE("RequestID does not exist in metadata");
            return BAD_VALUE;
        }

        requestList->push_back(newRequest);

        ALOGV("%s: requestId = %" PRId32, __FUNCTION__, newRequest->mResultExtras.requestId);
    }
    return OK;
}

status_t Camera3Device::capture(CameraMetadata &request, int64_t* /*lastFrameNumber*/) {
    ATRACE_CALL();

    List<const CameraMetadata> requests;
    requests.push_back(request);
    return captureList(requests, /*lastFrameNumber*/NULL);
}

status_t Camera3Device::submitRequestsHelper(
        const List<const CameraMetadata> &requests, bool repeating,
        /*out*/
        int64_t *lastFrameNumber) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    status_t res = checkStatusOkToCaptureLocked();
    if (res != OK) {
        // error logged by previous call
        return res;
    }

    RequestList requestList;

    res = convertMetadataListToRequestListLocked(requests, /*out*/&requestList);
    if (res != OK) {
        // error logged by previous call
        return res;
    }

    if (repeating) {
        res = mRequestThread->setRepeatingRequests(requestList, lastFrameNumber);
    } else {
        res = mRequestThread->queueRequestList(requestList, lastFrameNumber);
    }

    if (res == OK) {
        waitUntilStateThenRelock(/*active*/true, kActiveTimeout);
        if (res != OK) {
            SET_ERR_L("Can't transition to active in %f seconds!",
                    kActiveTimeout/1e9);
        }
        ALOGV("Camera %d: Capture request %" PRId32 " enqueued", mId,
              (*(requestList.begin()))->mResultExtras.requestId);
    } else {
        CLOGE("Cannot queue request. Impossible.");
        return BAD_VALUE;
    }

    return res;
}

status_t Camera3Device::captureList(const List<const CameraMetadata> &requests,
                                    int64_t *lastFrameNumber) {
    ATRACE_CALL();

    return submitRequestsHelper(requests, /*repeating*/false, lastFrameNumber);
}

status_t Camera3Device::setStreamingRequest(const CameraMetadata &request,
                                            int64_t* /*lastFrameNumber*/) {
    ATRACE_CALL();

    List<const CameraMetadata> requests;
    requests.push_back(request);
    return setStreamingRequestList(requests, /*lastFrameNumber*/NULL);
}

status_t Camera3Device::setStreamingRequestList(const List<const CameraMetadata> &requests,
                                                int64_t *lastFrameNumber) {
    ATRACE_CALL();

    return submitRequestsHelper(requests, /*repeating*/true, lastFrameNumber);
}

sp<Camera3Device::CaptureRequest> Camera3Device::setUpRequestLocked(
        const CameraMetadata &request) {
    status_t res;

    if (mStatus == STATUS_UNCONFIGURED || mNeedConfig) {
        res = configureStreamsLocked();
        if (res != OK) {
            SET_ERR_L("Can't set up streams: %s (%d)", strerror(-res), res);
            return NULL;
        }
        if (mStatus == STATUS_UNCONFIGURED) {
            CLOGE("No streams configured");
            return NULL;
        }
    }

    sp<CaptureRequest> newRequest = createCaptureRequest(request);
    return newRequest;
}

status_t Camera3Device::clearStreamingRequest(int64_t *lastFrameNumber) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device not initialized");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
        case STATUS_ACTIVE:
            // OK
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }
    ALOGV("Camera %d: Clearing repeating request", mId);

    return mRequestThread->clearRepeatingRequests(lastFrameNumber);
}

status_t Camera3Device::waitUntilRequestReceived(int32_t requestId, nsecs_t timeout) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);

    return mRequestThread->waitUntilRequestProcessed(requestId, timeout);
}

status_t Camera3Device::createInputStream(
        uint32_t width, uint32_t height, int format, int *id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);
    ALOGV("Camera %d: Creating new input stream %d: %d x %d, format %d",
            mId, mNextStreamId, width, height, format);

    status_t res;
    bool wasActive = false;

    switch (mStatus) {
        case STATUS_ERROR:
            ALOGE("%s: Device has encountered a serious error", __FUNCTION__);
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            ALOGE("%s: Device not initialized", __FUNCTION__);
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
            // OK
            break;
        case STATUS_ACTIVE:
            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
            res = internalPauseAndWaitLocked();
            if (res != OK) {
                SET_ERR_L("Can't pause captures to reconfigure streams!");
                return res;
            }
            wasActive = true;
            break;
        default:
            SET_ERR_L("%s: Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }
    assert(mStatus != STATUS_ACTIVE);

    if (mInputStream != 0) {
        ALOGE("%s: Cannot create more than 1 input stream", __FUNCTION__);
        return INVALID_OPERATION;
    }

    sp<Camera3InputStream> newStream = new Camera3InputStream(mNextStreamId,
                width, height, format);
    newStream->setStatusTracker(mStatusTracker);

    mInputStream = newStream;

    *id = mNextStreamId++;

    // Continue captures if active at start
    if (wasActive) {
        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
        res = configureStreamsLocked();
        if (res != OK) {
            ALOGE("%s: Can't reconfigure device for new stream %d: %s (%d)",
                    __FUNCTION__, mNextStreamId, strerror(-res), res);
            return res;
        }
        internalResumeLocked();
    }

    ALOGV("Camera %d: Created input stream", mId);
    return OK;
}


status_t Camera3Device::createZslStream(
            uint32_t width, uint32_t height,
            int depth,
            /*out*/
            int *id,
            sp<Camera3ZslStream>* zslStream) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);
    ALOGV("Camera %d: Creating ZSL stream %d: %d x %d, depth %d",
            mId, mNextStreamId, width, height, depth);

    status_t res;
    bool wasActive = false;

    switch (mStatus) {
        case STATUS_ERROR:
            ALOGE("%s: Device has encountered a serious error", __FUNCTION__);
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            ALOGE("%s: Device not initialized", __FUNCTION__);
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
            // OK
            break;
        case STATUS_ACTIVE:
            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
            res = internalPauseAndWaitLocked();
            if (res != OK) {
                SET_ERR_L("Can't pause captures to reconfigure streams!");
                return res;
            }
            wasActive = true;
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }
    assert(mStatus != STATUS_ACTIVE);

    if (mInputStream != 0) {
        ALOGE("%s: Cannot create more than 1 input stream", __FUNCTION__);
        return INVALID_OPERATION;
    }

    sp<Camera3ZslStream> newStream = new Camera3ZslStream(mNextStreamId,
                width, height, depth);
    newStream->setStatusTracker(mStatusTracker);

    res = mOutputStreams.add(mNextStreamId, newStream);
    if (res < 0) {
        ALOGE("%s: Can't add new stream to set: %s (%d)",
                __FUNCTION__, strerror(-res), res);
        return res;
    }
    mInputStream = newStream;

    mNeedConfig = true;

    *id = mNextStreamId++;
    *zslStream = newStream;

    // Continue captures if active at start
    if (wasActive) {
        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
        res = configureStreamsLocked();
        if (res != OK) {
            ALOGE("%s: Can't reconfigure device for new stream %d: %s (%d)",
                    __FUNCTION__, mNextStreamId, strerror(-res), res);
            return res;
        }
        internalResumeLocked();
    }

    ALOGV("Camera %d: Created ZSL stream", mId);
    return OK;
}

status_t Camera3Device::createStream(sp<ANativeWindow> consumer,
        uint32_t width, uint32_t height, int format, size_t size, int *id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);
    ALOGV("Camera %d: Creating new stream %d: %d x %d, format %d, size %zu",
            mId, mNextStreamId, width, height, format, size);

    status_t res;
    bool wasActive = false;

    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device not initialized");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
            // OK
            break;
        case STATUS_ACTIVE:
            ALOGV("%s: Stopping activity to reconfigure streams", __FUNCTION__);
            res = internalPauseAndWaitLocked();
            if (res != OK) {
                SET_ERR_L("Can't pause captures to reconfigure streams!");
                return res;
            }
            wasActive = true;
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }
    assert(mStatus != STATUS_ACTIVE);

    sp<Camera3OutputStream> newStream;
    if (format == HAL_PIXEL_FORMAT_BLOB) {
        ssize_t jpegBufferSize = getJpegBufferSize(width, height);
        if (jpegBufferSize > 0) {
            ALOGV("%s: Overwrite Jpeg output buffer size from %zu to %zu",
                    __FUNCTION__, size, jpegBufferSize);
        } else {
            SET_ERR_L("Invalid jpeg buffer size %zd", jpegBufferSize);
            return BAD_VALUE;
        }

        newStream = new Camera3OutputStream(mNextStreamId, consumer,
                width, height, jpegBufferSize, format);
    } else {
        newStream = new Camera3OutputStream(mNextStreamId, consumer,
                width, height, format);
    }
    newStream->setStatusTracker(mStatusTracker);

    res = mOutputStreams.add(mNextStreamId, newStream);
    if (res < 0) {
        SET_ERR_L("Can't add new stream to set: %s (%d)", strerror(-res), res);
        return res;
    }

    *id = mNextStreamId++;
    mNeedConfig = true;

    // Continue captures if active at start
    if (wasActive) {
        ALOGV("%s: Restarting activity to reconfigure streams", __FUNCTION__);
        res = configureStreamsLocked();
        if (res != OK) {
            CLOGE("Can't reconfigure device for new stream %d: %s (%d)",
                    mNextStreamId, strerror(-res), res);
            return res;
        }
        internalResumeLocked();
    }
    ALOGV("Camera %d: Created new stream", mId);
    return OK;
}

status_t Camera3Device::createReprocessStreamFromStream(int outputId, int *id) {
    ATRACE_CALL();
    (void)outputId; (void)id;

    CLOGE("Unimplemented");
    return INVALID_OPERATION;
}


status_t Camera3Device::getStreamInfo(int id,
        uint32_t *width, uint32_t *height, uint32_t *format) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device not initialized!");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
        case STATUS_ACTIVE:
            // OK
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }

    ssize_t idx = mOutputStreams.indexOfKey(id);
    if (idx == NAME_NOT_FOUND) {
        CLOGE("Stream %d is unknown", id);
        return idx;
    }

    if (width) *width  = mOutputStreams[idx]->getWidth();
    if (height) *height = mOutputStreams[idx]->getHeight();
    if (format) *format = mOutputStreams[idx]->getFormat();

    return OK;
}

status_t Camera3Device::setStreamTransform(int id,
        int transform) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device not initialized");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
        case STATUS_ACTIVE:
            // OK
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }

    ssize_t idx = mOutputStreams.indexOfKey(id);
    if (idx == NAME_NOT_FOUND) {
        CLOGE("Stream %d does not exist",
                id);
        return BAD_VALUE;
    }

    return mOutputStreams.editValueAt(idx)->setTransform(transform);
}

status_t Camera3Device::deleteStream(int id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);
    status_t res;

    ALOGV("%s: Camera %d: Deleting stream %d", __FUNCTION__, mId, id);

    // CameraDevice semantics require device to already be idle before
    // deleteStream is called, unlike for createStream.
    if (mStatus == STATUS_ACTIVE) {
        ALOGV("%s: Camera %d: Device not idle", __FUNCTION__, mId);
        return -EBUSY;
    }

    sp<Camera3StreamInterface> deletedStream;
    ssize_t outputStreamIdx = mOutputStreams.indexOfKey(id);
    if (mInputStream != NULL && id == mInputStream->getId()) {
        deletedStream = mInputStream;
        mInputStream.clear();
    } else {
        if (outputStreamIdx == NAME_NOT_FOUND) {
            CLOGE("Stream %d does not exist", id);
            return BAD_VALUE;
        }
    }

    // Delete output stream or the output part of a bi-directional stream.
    if (outputStreamIdx != NAME_NOT_FOUND) {
        deletedStream = mOutputStreams.editValueAt(outputStreamIdx);
        mOutputStreams.removeItem(id);
    }

    // Free up the stream endpoint so that it can be used by some other stream
    res = deletedStream->disconnect();
    if (res != OK) {
        SET_ERR_L("Can't disconnect deleted stream %d", id);
        // fall through since we want to still list the stream as deleted.
    }
    mDeletedStreams.add(deletedStream);
    mNeedConfig = true;

    return res;
}

status_t Camera3Device::deleteReprocessStream(int id) {
    ATRACE_CALL();
    (void)id;

    CLOGE("Unimplemented");
    return INVALID_OPERATION;
}


status_t Camera3Device::createDefaultRequest(int templateId,
        CameraMetadata *request) {
    ATRACE_CALL();
    ALOGV("%s: for template %d", __FUNCTION__, templateId);
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    switch (mStatus) {
        case STATUS_ERROR:
            CLOGE("Device has encountered a serious error");
            return INVALID_OPERATION;
        case STATUS_UNINITIALIZED:
            CLOGE("Device is not initialized!");
            return INVALID_OPERATION;
        case STATUS_UNCONFIGURED:
        case STATUS_CONFIGURED:
        case STATUS_ACTIVE:
            // OK
            break;
        default:
            SET_ERR_L("Unexpected status: %d", mStatus);
            return INVALID_OPERATION;
    }

    const camera_metadata_t *rawRequest;
    ATRACE_BEGIN("camera3->construct_default_request_settings");
    rawRequest = mHal3Device->ops->construct_default_request_settings(
        mHal3Device, templateId);
    ATRACE_END();
    if (rawRequest == NULL) {
        SET_ERR_L("HAL is unable to construct default settings for template %d",
                templateId);
        return DEAD_OBJECT;
    }
    *request = rawRequest;

    return OK;
}

status_t Camera3Device::waitUntilDrained() {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);
    Mutex::Autolock l(mLock);

    return waitUntilDrainedLocked();
}

status_t Camera3Device::waitUntilDrainedLocked() {
    switch (mStatus) {
        case STATUS_UNINITIALIZED:
        case STATUS_UNCONFIGURED:
            ALOGV("%s: Already idle", __FUNCTION__);
            return OK;
        case STATUS_CONFIGURED:
            // To avoid race conditions, check with tracker to be sure
        case STATUS_ERROR:
        case STATUS_ACTIVE:
            // Need to verify shut down
            break;
        default:
            SET_ERR_L("Unexpected status: %d",mStatus);
            return INVALID_OPERATION;
    }

    ALOGV("%s: Camera %d: Waiting until idle", __FUNCTION__, mId);
    status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
    return res;
}

// Pause to reconfigure
status_t Camera3Device::internalPauseAndWaitLocked() {
    mRequestThread->setPaused(true);
    mPauseStateNotify = true;

    ALOGV("%s: Camera %d: Internal wait until idle", __FUNCTION__, mId);
    status_t res = waitUntilStateThenRelock(/*active*/ false, kShutdownTimeout);
    if (res != OK) {
        SET_ERR_L("Can't idle device in %f seconds!",
                kShutdownTimeout/1e9);
    }

    return res;
}

// Resume after internalPauseAndWaitLocked
status_t Camera3Device::internalResumeLocked() {
    status_t res;

    mRequestThread->setPaused(false);

    res = waitUntilStateThenRelock(/*active*/ true, kActiveTimeout);
    if (res != OK) {
        SET_ERR_L("Can't transition to active in %f seconds!",
                kActiveTimeout/1e9);
    }
    mPauseStateNotify = false;
    return OK;
}

status_t Camera3Device::waitUntilStateThenRelock(bool active,
        nsecs_t timeout) {
    status_t res = OK;
    if (active == (mStatus == STATUS_ACTIVE)) {
        // Desired state already reached
        return res;
    }

    bool stateSeen = false;
    do {
        mRecentStatusUpdates.clear();

        res = mStatusChanged.waitRelative(mLock, timeout);
        if (res != OK) break;

        // Check state change history during wait
        for (size_t i = 0; i < mRecentStatusUpdates.size(); i++) {
            if (active == (mRecentStatusUpdates[i] == STATUS_ACTIVE) ) {
                stateSeen = true;
                break;
            }
        }
    } while (!stateSeen);

    return res;
}


status_t Camera3Device::setNotifyCallback(NotificationListener *listener) {
    ATRACE_CALL();
    Mutex::Autolock l(mOutputLock);

    if (listener != NULL && mListener != NULL) {
        ALOGW("%s: Replacing old callback listener", __FUNCTION__);
    }
    mListener = listener;

    return OK;
}

bool Camera3Device::willNotify3A() {
    return false;
}

status_t Camera3Device::waitForNextFrame(nsecs_t timeout) {
    status_t res;
    Mutex::Autolock l(mOutputLock);

    while (mResultQueue.empty()) {
        res = mResultSignal.waitRelative(mOutputLock, timeout);
        if (res == TIMED_OUT) {
            return res;
        } else if (res != OK) {
            ALOGW("%s: Camera %d: No frame in %" PRId64 " ns: %s (%d)",
                    __FUNCTION__, mId, timeout, strerror(-res), res);
            return res;
        }
    }
    return OK;
}

status_t Camera3Device::getNextResult(CaptureResult *frame) {
    ATRACE_CALL();
    Mutex::Autolock l(mOutputLock);

    if (mResultQueue.empty()) {
        return NOT_ENOUGH_DATA;
    }

    if (frame == NULL) {
        ALOGE("%s: argument cannot be NULL", __FUNCTION__);
        return BAD_VALUE;
    }

    CaptureResult &result = *(mResultQueue.begin());
    frame->mResultExtras = result.mResultExtras;
    frame->mMetadata.acquire(result.mMetadata);
    mResultQueue.erase(mResultQueue.begin());

    return OK;
}

status_t Camera3Device::triggerAutofocus(uint32_t id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);

    ALOGV("%s: Triggering autofocus, id %d", __FUNCTION__, id);
    // Mix-in this trigger into the next request and only the next request.
    RequestTrigger trigger[] = {
        {
            ANDROID_CONTROL_AF_TRIGGER,
            ANDROID_CONTROL_AF_TRIGGER_START
        },
        {
            ANDROID_CONTROL_AF_TRIGGER_ID,
            static_cast<int32_t>(id)
        },
    };

    return mRequestThread->queueTrigger(trigger,
                                        sizeof(trigger)/sizeof(trigger[0]));
}

status_t Camera3Device::triggerCancelAutofocus(uint32_t id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);

    ALOGV("%s: Triggering cancel autofocus, id %d", __FUNCTION__, id);
    // Mix-in this trigger into the next request and only the next request.
    RequestTrigger trigger[] = {
        {
            ANDROID_CONTROL_AF_TRIGGER,
            ANDROID_CONTROL_AF_TRIGGER_CANCEL
        },
        {
            ANDROID_CONTROL_AF_TRIGGER_ID,
            static_cast<int32_t>(id)
        },
    };

    return mRequestThread->queueTrigger(trigger,
                                        sizeof(trigger)/sizeof(trigger[0]));
}

status_t Camera3Device::triggerPrecaptureMetering(uint32_t id) {
    ATRACE_CALL();
    Mutex::Autolock il(mInterfaceLock);

    ALOGV("%s: Triggering precapture metering, id %d", __FUNCTION__, id);
    // Mix-in this trigger into the next request and only the next request.
    RequestTrigger trigger[] = {
        {
            ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER,
            ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER_START
        },
        {
            ANDROID_CONTROL_AE_PRECAPTURE_ID,
            static_cast<int32_t>(id)
        },
    };

    return mRequestThread->queueTrigger(trigger,
                                        sizeof(trigger)/sizeof(trigger[0]));
}

status_t Camera3Device::pushReprocessBuffer(int reprocessStreamId,
        buffer_handle_t *buffer, wp<BufferReleasedListener> listener) {
    ATRACE_CALL();
    (void)reprocessStreamId; (void)buffer; (void)listener;

    CLOGE("Unimplemented");
    return INVALID_OPERATION;
}

status_t Camera3Device::flush(int64_t *frameNumber) {
    ATRACE_CALL();
    ALOGV("%s: Camera %d: Flushing all requests", __FUNCTION__, mId);
    Mutex::Autolock il(mInterfaceLock);

    {
        Mutex::Autolock l(mLock);
        mRequestThread->clear(/*out*/frameNumber);
    }

    status_t res;
    if (mHal3Device->common.version >= CAMERA_DEVICE_API_VERSION_3_1) {
        res = mHal3Device->ops->flush(mHal3Device);
    } else {
        Mutex::Autolock l(mLock);
        res = waitUntilDrainedLocked();
    }

    return res;
}

/**
 * Methods called by subclasses
 */

void Camera3Device::notifyStatus(bool idle) {
    {
        // Need mLock to safely update state and synchronize to current
        // state of methods in flight.
        Mutex::Autolock l(mLock);
        // We can get various system-idle notices from the status tracker
        // while starting up. Only care about them if we've actually sent
        // in some requests recently.
        if (mStatus != STATUS_ACTIVE && mStatus != STATUS_CONFIGURED) {
            return;
        }
        ALOGV("%s: Camera %d: Now %s", __FUNCTION__, mId,
                idle ? "idle" : "active");
        mStatus = idle ? STATUS_CONFIGURED : STATUS_ACTIVE;
        mRecentStatusUpdates.add(mStatus);
        mStatusChanged.signal();

        // Skip notifying listener if we're doing some user-transparent
        // state changes
        if (mPauseStateNotify) return;
    }
    NotificationListener *listener;
    {
        Mutex::Autolock l(mOutputLock);
        listener = mListener;
    }
    if (idle && listener != NULL) {
        listener->notifyIdle();
    }
}

/**
 * Camera3Device private methods
 */

sp<Camera3Device::CaptureRequest> Camera3Device::createCaptureRequest(
        const CameraMetadata &request) {
    ATRACE_CALL();
    status_t res;

    sp<CaptureRequest> newRequest = new CaptureRequest;
    newRequest->mSettings = request;

    camera_metadata_entry_t inputStreams =
            newRequest->mSettings.find(ANDROID_REQUEST_INPUT_STREAMS);
    if (inputStreams.count > 0) {
        if (mInputStream == NULL ||
                mInputStream->getId() != inputStreams.data.i32[0]) {
            CLOGE("Request references unknown input stream %d",
                    inputStreams.data.u8[0]);
            return NULL;
        }
        // Lazy completion of stream configuration (allocation/registration)
        // on first use
        if (mInputStream->isConfiguring()) {
            res = mInputStream->finishConfiguration(mHal3Device);
            if (res != OK) {
                SET_ERR_L("Unable to finish configuring input stream %d:"
                        " %s (%d)",
                        mInputStream->getId(), strerror(-res), res);
                return NULL;
            }
        }

        newRequest->mInputStream = mInputStream;
        newRequest->mSettings.erase(ANDROID_REQUEST_INPUT_STREAMS);
    }

    camera_metadata_entry_t streams =
            newRequest->mSettings.find(ANDROID_REQUEST_OUTPUT_STREAMS);
    if (streams.count == 0) {
        CLOGE("Zero output streams specified!");
        return NULL;
    }

    for (size_t i = 0; i < streams.count; i++) {
        int idx = mOutputStreams.indexOfKey(streams.data.i32[i]);
        if (idx == NAME_NOT_FOUND) {
            CLOGE("Request references unknown stream %d",
                    streams.data.u8[i]);
            return NULL;
        }
        sp<Camera3OutputStreamInterface> stream =
                mOutputStreams.editValueAt(idx);

        // Lazy completion of stream configuration (allocation/registration)
        // on first use
        if (stream->isConfiguring()) {
            res = stream->finishConfiguration(mHal3Device);
            if (res != OK) {
                SET_ERR_L("Unable to finish configuring stream %d: %s (%d)",
                        stream->getId(), strerror(-res), res);
                return NULL;
            }
        }

        newRequest->mOutputStreams.push(stream);
    }
    newRequest->mSettings.erase(ANDROID_REQUEST_OUTPUT_STREAMS);

    return newRequest;
}

status_t Camera3Device::configureStreamsLocked() {
    ATRACE_CALL();
    status_t res;

    if (mStatus != STATUS_UNCONFIGURED && mStatus != STATUS_CONFIGURED) {
        CLOGE("Not idle");
        return INVALID_OPERATION;
    }

    if (!mNeedConfig) {
        ALOGV("%s: Skipping config, no stream changes", __FUNCTION__);
        return OK;
    }

    // Start configuring the streams
    ALOGV("%s: Camera %d: Starting stream configuration", __FUNCTION__, mId);

    camera3_stream_configuration config;

    config.num_streams = (mInputStream != NULL) + mOutputStreams.size();

    Vector<camera3_stream_t*> streams;
    streams.setCapacity(config.num_streams);

    if (mInputStream != NULL) {
        camera3_stream_t *inputStream;
        inputStream = mInputStream->startConfiguration();
        if (inputStream == NULL) {
            SET_ERR_L("Can't start input stream configuration");
            return INVALID_OPERATION;
        }
        streams.add(inputStream);
    }

    for (size_t i = 0; i < mOutputStreams.size(); i++) {

        // Don't configure bidi streams twice, nor add them twice to the list
        if (mOutputStreams[i].get() ==
            static_cast<Camera3StreamInterface*>(mInputStream.get())) {

            config.num_streams--;
            continue;
        }

        camera3_stream_t *outputStream;
        outputStream = mOutputStreams.editValueAt(i)->startConfiguration();
        if (outputStream == NULL) {
            SET_ERR_L("Can't start output stream configuration");
            return INVALID_OPERATION;
        }
        streams.add(outputStream);
    }

    config.streams = streams.editArray();

    // Do the HAL configuration; will potentially touch stream
    // max_buffers, usage, priv fields.
    ATRACE_BEGIN("camera3->configure_streams");
    res = mHal3Device->ops->configure_streams(mHal3Device, &config);
    ATRACE_END();

    if (res != OK) {
        SET_ERR_L("Unable to configure streams with HAL: %s (%d)",
                strerror(-res), res);
        return res;
    }

    // Finish all stream configuration immediately.
    // TODO: Try to relax this later back to lazy completion, which should be
    // faster

    if (mInputStream != NULL && mInputStream->isConfiguring()) {
        res = mInputStream->finishConfiguration(mHal3Device);
        if (res != OK) {
            SET_ERR_L("Can't finish configuring input stream %d: %s (%d)",
                    mInputStream->getId(), strerror(-res), res);
            return res;
        }
    }

    for (size_t i = 0; i < mOutputStreams.size(); i++) {
        sp<Camera3OutputStreamInterface> outputStream =
            mOutputStreams.editValueAt(i);
        if (outputStream->isConfiguring()) {
            res = outputStream->finishConfiguration(mHal3Device);
            if (res != OK) {
                SET_ERR_L("Can't finish configuring output stream %d: %s (%d)",
                        outputStream->getId(), strerror(-res), res);
                return res;
            }
        }
    }

    // Request thread needs to know to avoid using repeat-last-settings protocol
    // across configure_streams() calls
    mRequestThread->configurationComplete();

    // Update device state

    mNeedConfig = false;

    if (config.num_streams > 0) {
        mStatus = STATUS_CONFIGURED;
    } else {
        mStatus = STATUS_UNCONFIGURED;
    }

    ALOGV("%s: Camera %d: Stream configuration complete", __FUNCTION__, mId);

    return OK;
}

void Camera3Device::setErrorState(const char *fmt, ...) {
    Mutex::Autolock l(mLock);
    va_list args;
    va_start(args, fmt);

    setErrorStateLockedV(fmt, args);

    va_end(args);
}

void Camera3Device::setErrorStateV(const char *fmt, va_list args) {
    Mutex::Autolock l(mLock);
    setErrorStateLockedV(fmt, args);
}

void Camera3Device::setErrorStateLocked(const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);

    setErrorStateLockedV(fmt, args);

    va_end(args);
}

void Camera3Device::setErrorStateLockedV(const char *fmt, va_list args) {
    // Print out all error messages to log
    String8 errorCause = String8::formatV(fmt, args);
    ALOGE("Camera %d: %s", mId, errorCause.string());

    // But only do error state transition steps for the first error
    if (mStatus == STATUS_ERROR || mStatus == STATUS_UNINITIALIZED) return;

    // Save stack trace. View by dumping it later.
    CameraTraces::saveTrace();
    // TODO: consider adding errorCause and client pid/procname

    mErrorCause = errorCause;

    mRequestThread->setPaused(true);
    mStatus = STATUS_ERROR;
}

/**
 * In-flight request management
 */

status_t Camera3Device::registerInFlight(uint32_t frameNumber,
        int32_t numBuffers, CaptureResultExtras resultExtras) {
    ATRACE_CALL();
    Mutex::Autolock l(mInFlightLock);

    ssize_t res;
    res = mInFlightMap.add(frameNumber, InFlightRequest(numBuffers, resultExtras));
    if (res < 0) return res;

    return OK;
}

/**
 * QUIRK(partial results)
 * Check if all 3A fields are ready, and send off a partial 3A-only result
 * to the output frame queue
 */
bool Camera3Device::processPartial3AQuirk(
        uint32_t frameNumber,
        const CameraMetadata& partial, const CaptureResultExtras& resultExtras) {

    // Check if all 3A states are present
    // The full list of fields is
    //   android.control.afMode
    //   android.control.awbMode
    //   android.control.aeState
    //   android.control.awbState
    //   android.control.afState
    //   android.control.afTriggerID
    //   android.control.aePrecaptureID
    // TODO: Add android.control.aeMode

    bool gotAllStates = true;

    uint8_t afMode;
    uint8_t awbMode;
    uint8_t aeState;
    uint8_t afState;
    uint8_t awbState;
    int32_t afTriggerId;
    int32_t aeTriggerId;

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AF_MODE,
        &afMode, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AWB_MODE,
        &awbMode, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AE_STATE,
        &aeState, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AF_STATE,
        &afState, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AWB_STATE,
        &awbState, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AF_TRIGGER_ID,
        &afTriggerId, frameNumber);

    gotAllStates &= get3AResult(partial, ANDROID_CONTROL_AE_PRECAPTURE_ID,
        &aeTriggerId, frameNumber);

    if (!gotAllStates) return false;

    ALOGVV("%s: Camera %d: Frame %d, Request ID %d: AF mode %d, AWB mode %d, "
        "AF state %d, AE state %d, AWB state %d, "
        "AF trigger %d, AE precapture trigger %d",
        __FUNCTION__, mId, frameNumber, resultExtras.requestId,
        afMode, awbMode,
        afState, aeState, awbState,
        afTriggerId, aeTriggerId);

    // Got all states, so construct a minimal result to send
    // In addition to the above fields, this means adding in
    //   android.request.frameCount
    //   android.request.requestId
    //   android.quirks.partialResult

    const size_t kMinimal3AResultEntries = 10;

    Mutex::Autolock l(mOutputLock);

    CaptureResult captureResult;
    captureResult.mResultExtras = resultExtras;
    captureResult.mMetadata = CameraMetadata(kMinimal3AResultEntries, /*dataCapacity*/ 0);
    // TODO: change this to sp<CaptureResult>. This will need other changes, including,
    // but not limited to CameraDeviceBase::getNextResult
    CaptureResult& min3AResult =
            *mResultQueue.insert(mResultQueue.end(), captureResult);

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_REQUEST_FRAME_COUNT,
            // TODO: This is problematic casting. Need to fix CameraMetadata.
            reinterpret_cast<int32_t*>(&frameNumber), frameNumber)) {
        return false;
    }

    int32_t requestId = resultExtras.requestId;
    if (!insert3AResult(min3AResult.mMetadata, ANDROID_REQUEST_ID,
            &requestId, frameNumber)) {
        return false;
    }

    static const uint8_t partialResult = ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL;
    if (!insert3AResult(min3AResult.mMetadata, ANDROID_QUIRKS_PARTIAL_RESULT,
            &partialResult, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_MODE,
            &afMode, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AWB_MODE,
            &awbMode, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AE_STATE,
            &aeState, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_STATE,
            &afState, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AWB_STATE,
            &awbState, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AF_TRIGGER_ID,
            &afTriggerId, frameNumber)) {
        return false;
    }

    if (!insert3AResult(min3AResult.mMetadata, ANDROID_CONTROL_AE_PRECAPTURE_ID,
            &aeTriggerId, frameNumber)) {
        return false;
    }

    mResultSignal.signal();

    return true;
}

template<typename T>
bool Camera3Device::get3AResult(const CameraMetadata& result, int32_t tag,
        T* value, uint32_t frameNumber) {
    (void) frameNumber;

    camera_metadata_ro_entry_t entry;

    entry = result.find(tag);
    if (entry.count == 0) {
        ALOGVV("%s: Camera %d: Frame %d: No %s provided by HAL!", __FUNCTION__,
            mId, frameNumber, get_camera_metadata_tag_name(tag));
        return false;
    }

    if (sizeof(T) == sizeof(uint8_t)) {
        *value = entry.data.u8[0];
    } else if (sizeof(T) == sizeof(int32_t)) {
        *value = entry.data.i32[0];
    } else {
        ALOGE("%s: Unexpected type", __FUNCTION__);
        return false;
    }
    return true;
}

template<typename T>
bool Camera3Device::insert3AResult(CameraMetadata& result, int32_t tag,
        const T* value, uint32_t frameNumber) {
    if (result.update(tag, value, 1) != NO_ERROR) {
        mResultQueue.erase(--mResultQueue.end(), mResultQueue.end());
        SET_ERR("Frame %d: Failed to set %s in partial metadata",
                frameNumber, get_camera_metadata_tag_name(tag));
        return false;
    }
    return true;
}

/**
 * Camera HAL device callback methods
 */

void Camera3Device::processCaptureResult(const camera3_capture_result *result) {
    ATRACE_CALL();

    status_t res;

    uint32_t frameNumber = result->frame_number;
    if (result->result == NULL && result->num_output_buffers == 0) {
        SET_ERR("No result data provided by HAL for frame %d",
                frameNumber);
        return;
    }
    bool partialResultQuirk = false;
    CameraMetadata collectedQuirkResult;
    CaptureResultExtras resultExtras;

    // Get capture timestamp and resultExtras from list of in-flight requests,
    // where it was added by the shutter notification for this frame.
    // Then update the in-flight status and remove the in-flight entry if
    // all result data has been received.
    nsecs_t timestamp = 0;
    {
        Mutex::Autolock l(mInFlightLock);
        ssize_t idx = mInFlightMap.indexOfKey(frameNumber);
        if (idx == NAME_NOT_FOUND) {
            SET_ERR("Unknown frame number for capture result: %d",
                    frameNumber);
            return;
        }
        InFlightRequest &request = mInFlightMap.editValueAt(idx);
        ALOGVV("%s: got InFlightRequest requestId = %" PRId32 ", frameNumber = %" PRId64
                ", burstId = %" PRId32,
                __FUNCTION__, request.resultExtras.requestId, request.resultExtras.frameNumber,
                request.resultExtras.burstId);

        // Check if this result carries only partial metadata
        if (mUsePartialResultQuirk && result->result != NULL) {
            camera_metadata_ro_entry_t partialResultEntry;
            res = find_camera_metadata_ro_entry(result->result,
                    ANDROID_QUIRKS_PARTIAL_RESULT, &partialResultEntry);
            if (res != NAME_NOT_FOUND &&
                    partialResultEntry.count > 0 &&
                    partialResultEntry.data.u8[0] ==
                    ANDROID_QUIRKS_PARTIAL_RESULT_PARTIAL) {
                // A partial result. Flag this as such, and collect this
                // set of metadata into the in-flight entry.
                partialResultQuirk = true;
                request.partialResultQuirk.collectedResult.append(
                    result->result);
                request.partialResultQuirk.collectedResult.erase(
                    ANDROID_QUIRKS_PARTIAL_RESULT);
                // Fire off a 3A-only result if possible
                if (!request.partialResultQuirk.haveSent3A) {
                    request.partialResultQuirk.haveSent3A =
                            processPartial3AQuirk(frameNumber,
                                    request.partialResultQuirk.collectedResult,
                                    request.resultExtras);
                }
            }
        }

        timestamp = request.captureTimestamp;
        resultExtras = request.resultExtras;

        /**
         * One of the following must happen before it's legal to call process_capture_result,
         * unless partial metadata is being provided:
         * - CAMERA3_MSG_SHUTTER (expected during normal operation)
         * - CAMERA3_MSG_ERROR (expected during flush)
         */
        if (request.requestStatus == OK && timestamp == 0 && !partialResultQuirk) {
            SET_ERR("Called before shutter notify for frame %d",
                    frameNumber);
            return;
        }

        // Did we get the (final) result metadata for this capture?
        if (result->result != NULL && !partialResultQuirk) {
            if (request.haveResultMetadata) {
                SET_ERR("Called multiple times with metadata for frame %d",
                        frameNumber);
                return;
            }
            if (mUsePartialResultQuirk &&
                    !request.partialResultQuirk.collectedResult.isEmpty()) {
                collectedQuirkResult.acquire(
                    request.partialResultQuirk.collectedResult);
            }
            request.haveResultMetadata = true;
        }

        request.numBuffersLeft -= result->num_output_buffers;

        if (request.numBuffersLeft < 0) {
            SET_ERR("Too many buffers returned for frame %d",
                    frameNumber);
            return;
        }

        // Check if everything has arrived for this result (buffers and metadata), remove it from
        // InFlightMap if both arrived or HAL reports error for this request (i.e. during flush).
        if ((request.requestStatus != OK) ||
                (request.haveResultMetadata && request.numBuffersLeft == 0)) {
            ATRACE_ASYNC_END("frame capture", frameNumber);
            mInFlightMap.removeItemsAt(idx, 1);
        }

        // Sanity check - if we have too many in-flight frames, something has
        // likely gone wrong
        if (mInFlightMap.size() > kInFlightWarnLimit) {
            CLOGE("In-flight list too large: %zu", mInFlightMap.size());
        }

    }

    // Process the result metadata, if provided
    bool gotResult = false;
    if (result->result != NULL && !partialResultQuirk) {
        Mutex::Autolock l(mOutputLock);

        gotResult = true;

        // TODO: need to track errors for tighter bounds on expected frame number
        if (frameNumber < mNextResultFrameNumber) {
            SET_ERR("Out-of-order capture result metadata submitted! "
                    "(got frame number %d, expecting %d)",
                    frameNumber, mNextResultFrameNumber);
            return;
        }
        mNextResultFrameNumber = frameNumber + 1;

        CaptureResult captureResult;
        captureResult.mResultExtras = resultExtras;
        captureResult.mMetadata = result->result;

        if (captureResult.mMetadata.update(ANDROID_REQUEST_FRAME_COUNT,
                (int32_t*)&frameNumber, 1) != OK) {
            SET_ERR("Failed to set frame# in metadata (%d)",
                    frameNumber);
            gotResult = false;
        } else {
            ALOGVV("%s: Camera %d: Set frame# in metadata (%d)",
                    __FUNCTION__, mId, frameNumber);
        }

        // Append any previous partials to form a complete result
        if (mUsePartialResultQuirk && !collectedQuirkResult.isEmpty()) {
            captureResult.mMetadata.append(collectedQuirkResult);
        }

        captureResult.mMetadata.sort();

        // Check that there's a timestamp in the result metadata

        camera_metadata_entry entry =
                captureResult.mMetadata.find(ANDROID_SENSOR_TIMESTAMP);
        if (entry.count == 0) {
            SET_ERR("No timestamp provided by HAL for frame %d!",
                    frameNumber);
            gotResult = false;
        } else if (timestamp != entry.data.i64[0]) {
            SET_ERR("Timestamp mismatch between shutter notify and result"
                    " metadata for frame %d (%" PRId64 " vs %" PRId64 " respectively)",
                    frameNumber, timestamp, entry.data.i64[0]);
            gotResult = false;
        }

        if (gotResult) {
            // Valid result, insert into queue
            List<CaptureResult>::iterator queuedResult =
                    mResultQueue.insert(mResultQueue.end(), CaptureResult(captureResult));
            ALOGVV("%s: result requestId = %" PRId32 ", frameNumber = %" PRId64
                   ", burstId = %" PRId32, __FUNCTION__,
                   queuedResult->mResultExtras.requestId,
                   queuedResult->mResultExtras.frameNumber,
                   queuedResult->mResultExtras.burstId);
        }
    } // scope for mOutputLock

    // Return completed buffers to their streams with the timestamp

    for (size_t i = 0; i < result->num_output_buffers; i++) {
        Camera3Stream *stream =
                Camera3Stream::cast(result->output_buffers[i].stream);
        res = stream->returnBuffer(result->output_buffers[i], timestamp);
        // Note: stream may be deallocated at this point, if this buffer was the
        // last reference to it.
        if (res != OK) {
            ALOGE("Can't return buffer %zu for frame %d to its stream: "
                    " %s (%d)", i, frameNumber, strerror(-res), res);
        }
    }

    // Finally, signal any waiters for new frames

    if (gotResult) {
        mResultSignal.signal();
    }

}

void Camera3Device::notify(const camera3_notify_msg *msg) {
    ATRACE_CALL();
    NotificationListener *listener;
    {
        Mutex::Autolock l(mOutputLock);
        listener = mListener;
    }

    if (msg == NULL) {
        SET_ERR("HAL sent NULL notify message!");
        return;
    }

    switch (msg->type) {
        case CAMERA3_MSG_ERROR: {
            int streamId = 0;
            if (msg->message.error.error_stream != NULL) {
                Camera3Stream *stream =
                        Camera3Stream::cast(
                                  msg->message.error.error_stream);
                streamId = stream->getId();
            }
            ALOGV("Camera %d: %s: HAL error, frame %d, stream %d: %d",
                    mId, __FUNCTION__, msg->message.error.frame_number,
                    streamId, msg->message.error.error_code);

            CaptureResultExtras resultExtras;
            // Set request error status for the request in the in-flight tracking
            {
                Mutex::Autolock l(mInFlightLock);
                ssize_t idx = mInFlightMap.indexOfKey(msg->message.error.frame_number);
                if (idx >= 0) {
                    InFlightRequest &r = mInFlightMap.editValueAt(idx);
                    r.requestStatus = msg->message.error.error_code;
                    resultExtras = r.resultExtras;
                } else {
                    resultExtras.frameNumber = msg->message.error.frame_number;
                    ALOGE("Camera %d: %s: cannot find in-flight request on frame %" PRId64
                          " error", mId, __FUNCTION__, resultExtras.frameNumber);
                }
            }

            if (listener != NULL) {
                if (msg->message.error.error_code == CAMERA3_MSG_ERROR_DEVICE) {
                    listener->notifyError(ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE,
                                          resultExtras);
                }
            } else {
                ALOGE("Camera %d: %s: no listener available", mId, __FUNCTION__);
            }
            break;
        }
        case CAMERA3_MSG_SHUTTER: {
            ssize_t idx;
            uint32_t frameNumber = msg->message.shutter.frame_number;
            nsecs_t timestamp = msg->message.shutter.timestamp;
            // Verify ordering of shutter notifications
            {
                Mutex::Autolock l(mOutputLock);
                // TODO: need to track errors for tighter bounds on expected frame number.
                if (frameNumber < mNextShutterFrameNumber) {
                    SET_ERR("Shutter notification out-of-order. Expected "
                            "notification for frame %d, got frame %d",
                            mNextShutterFrameNumber, frameNumber);
                    break;
                }
                mNextShutterFrameNumber = frameNumber + 1;
            }

            CaptureResultExtras resultExtras;

            // Set timestamp for the request in the in-flight tracking
            // and get the request ID to send upstream
            {
                Mutex::Autolock l(mInFlightLock);
                idx = mInFlightMap.indexOfKey(frameNumber);
                if (idx >= 0) {
                    InFlightRequest &r = mInFlightMap.editValueAt(idx);
                    r.captureTimestamp = timestamp;
                    resultExtras = r.resultExtras;
                }
            }
            if (idx < 0) {
                SET_ERR("Shutter notification for non-existent frame number %d",
                        frameNumber);
                break;
            }
            ALOGVV("Camera %d: %s: Shutter fired for frame %d (id %d) at %" PRId64,
                    mId, __FUNCTION__, frameNumber, resultExtras.requestId, timestamp);
            // Call listener, if any
            if (listener != NULL) {
                listener->notifyShutter(resultExtras, timestamp);
            }
            break;
        }
        default:
            SET_ERR("Unknown notify message from HAL: %d",
                    msg->type);
    }
}

CameraMetadata Camera3Device::getLatestRequestLocked() {
    ALOGV("%s", __FUNCTION__);

    CameraMetadata retVal;

    if (mRequestThread != NULL) {
        retVal = mRequestThread->getLatestRequest();
    }

    return retVal;
}


/**
 * RequestThread inner class methods
 */

Camera3Device::RequestThread::RequestThread(wp<Camera3Device> parent,
        sp<StatusTracker> statusTracker,
        camera3_device_t *hal3Device) :
        Thread(false),
        mParent(parent),
        mStatusTracker(statusTracker),
        mHal3Device(hal3Device),
        mId(getId(parent)),
        mReconfigured(false),
        mDoPause(false),
        mPaused(true),
        mFrameNumber(0),
        mLatestRequestId(NAME_NOT_FOUND),
        mRepeatingLastFrameNumber(NO_IN_FLIGHT_REPEATING_FRAMES) {
    mStatusId = statusTracker->addComponent();
}

void Camera3Device::RequestThread::configurationComplete() {
    Mutex::Autolock l(mRequestLock);
    mReconfigured = true;
}

status_t Camera3Device::RequestThread::queueRequestList(
        List<sp<CaptureRequest> > &requests,
        /*out*/
        int64_t *lastFrameNumber) {
    Mutex::Autolock l(mRequestLock);
    for (List<sp<CaptureRequest> >::iterator it = requests.begin(); it != requests.end();
            ++it) {
        mRequestQueue.push_back(*it);
    }

    if (lastFrameNumber != NULL) {
        *lastFrameNumber = mFrameNumber + mRequestQueue.size() - 1;
        ALOGV("%s: requestId %d, mFrameNumber %" PRId32 ", lastFrameNumber %" PRId64 ".",
              __FUNCTION__, (*(requests.begin()))->mResultExtras.requestId, mFrameNumber,
              *lastFrameNumber);
    }

    unpauseForNewRequests();

    return OK;
}


status_t Camera3Device::RequestThread::queueTrigger(
        RequestTrigger trigger[],
        size_t count) {

    Mutex::Autolock l(mTriggerMutex);
    status_t ret;

    for (size_t i = 0; i < count; ++i) {
        ret = queueTriggerLocked(trigger[i]);

        if (ret != OK) {
            return ret;
        }
    }

    return OK;
}

int Camera3Device::RequestThread::getId(const wp<Camera3Device> &device) {
    sp<Camera3Device> d = device.promote();
    if (d != NULL) return d->mId;
    return 0;
}

status_t Camera3Device::RequestThread::queueTriggerLocked(
        RequestTrigger trigger) {

    uint32_t tag = trigger.metadataTag;
    ssize_t index = mTriggerMap.indexOfKey(tag);

    switch (trigger.getTagType()) {
        case TYPE_BYTE:
        // fall-through
        case TYPE_INT32:
            break;
        default:
            ALOGE("%s: Type not supported: 0x%x", __FUNCTION__,
                    trigger.getTagType());
            return INVALID_OPERATION;
    }

    /**
     * Collect only the latest trigger, since we only have 1 field
     * in the request settings per trigger tag, and can't send more than 1
     * trigger per request.
     */
    if (index != NAME_NOT_FOUND) {
        mTriggerMap.editValueAt(index) = trigger;
    } else {
        mTriggerMap.add(tag, trigger);
    }

    return OK;
}

status_t Camera3Device::RequestThread::setRepeatingRequests(
        const RequestList &requests,
        /*out*/
        int64_t *lastFrameNumber) {
    Mutex::Autolock l(mRequestLock);
    if (lastFrameNumber != NULL) {
        *lastFrameNumber = mRepeatingLastFrameNumber;
    }
    mRepeatingRequests.clear();
    mRepeatingRequests.insert(mRepeatingRequests.begin(),
            requests.begin(), requests.end());

    unpauseForNewRequests();

    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
    return OK;
}

bool Camera3Device::RequestThread::isRepeatingRequestLocked(const sp<CaptureRequest> requestIn) {
    if (mRepeatingRequests.empty()) {
        return false;
    }
    int32_t requestId = requestIn->mResultExtras.requestId;
    const RequestList &repeatRequests = mRepeatingRequests;
    // All repeating requests are guaranteed to have same id so only check first quest
    const sp<CaptureRequest> firstRequest = *repeatRequests.begin();
    return (firstRequest->mResultExtras.requestId == requestId);
}

status_t Camera3Device::RequestThread::clearRepeatingRequests(/*out*/int64_t *lastFrameNumber) {
    Mutex::Autolock l(mRequestLock);
    mRepeatingRequests.clear();
    if (lastFrameNumber != NULL) {
        *lastFrameNumber = mRepeatingLastFrameNumber;
    }
    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
    return OK;
}

status_t Camera3Device::RequestThread::clear(/*out*/int64_t *lastFrameNumber) {
    Mutex::Autolock l(mRequestLock);
    ALOGV("RequestThread::%s:", __FUNCTION__);
    mRepeatingRequests.clear();

    // Decrement repeating frame count for those requests never sent to device
    // TODO: Remove this after we have proper error handling so these requests
    // will generate an error callback. This might be the only place calling
    // isRepeatingRequestLocked. If so, isRepeatingRequestLocked should also be removed.
    const RequestList &requests = mRequestQueue;
    for (RequestList::const_iterator it = requests.begin();
            it != requests.end(); ++it) {
        if (isRepeatingRequestLocked(*it)) {
            mRepeatingLastFrameNumber--;
        }
    }
    mRequestQueue.clear();
    mTriggerMap.clear();
    if (lastFrameNumber != NULL) {
        *lastFrameNumber = mRepeatingLastFrameNumber;
    }
    mRepeatingLastFrameNumber = NO_IN_FLIGHT_REPEATING_FRAMES;
    return OK;
}

void Camera3Device::RequestThread::setPaused(bool paused) {
    Mutex::Autolock l(mPauseLock);
    mDoPause = paused;
    mDoPauseSignal.signal();
}

status_t Camera3Device::RequestThread::waitUntilRequestProcessed(
        int32_t requestId, nsecs_t timeout) {
    Mutex::Autolock l(mLatestRequestMutex);
    status_t res;
    while (mLatestRequestId != requestId) {
        nsecs_t startTime = systemTime();

        res = mLatestRequestSignal.waitRelative(mLatestRequestMutex, timeout);
        if (res != OK) return res;

        timeout -= (systemTime() - startTime);
    }

    return OK;
}

void Camera3Device::RequestThread::requestExit() {
    // Call parent to set up shutdown
    Thread::requestExit();
    // The exit from any possible waits
    mDoPauseSignal.signal();
    mRequestSignal.signal();
}

bool Camera3Device::RequestThread::threadLoop() {

    status_t res;

    // Handle paused state.
    if (waitIfPaused()) {
        return true;
    }

    // Get work to do

    sp<CaptureRequest> nextRequest = waitForNextRequest();
    if (nextRequest == NULL) {
        return true;
    }

    // Create request to HAL
    camera3_capture_request_t request = camera3_capture_request_t();
    request.frame_number = nextRequest->mResultExtras.frameNumber;
    Vector<camera3_stream_buffer_t> outputBuffers;

    // Get the request ID, if any
    int requestId;
    camera_metadata_entry_t requestIdEntry =
            nextRequest->mSettings.find(ANDROID_REQUEST_ID);
    if (requestIdEntry.count > 0) {
        requestId = requestIdEntry.data.i32[0];
    } else {
        ALOGW("%s: Did not have android.request.id set in the request",
                __FUNCTION__);
        requestId = NAME_NOT_FOUND;
    }

    // Insert any queued triggers (before metadata is locked)
    int32_t triggerCount;
    res = insertTriggers(nextRequest);
    if (res < 0) {
        SET_ERR("RequestThread: Unable to insert triggers "
                "(capture request %d, HAL device: %s (%d)",
                request.frame_number, strerror(-res), res);
        cleanUpFailedRequest(request, nextRequest, outputBuffers);
        return false;
    }
    triggerCount = res;

    bool triggersMixedIn = (triggerCount > 0 || mPrevTriggers > 0);

    // If the request is the same as last, or we had triggers last time
    if (mPrevRequest != nextRequest || triggersMixedIn) {
        /**
         * HAL workaround:
         * Insert a dummy trigger ID if a trigger is set but no trigger ID is
         */
        res = addDummyTriggerIds(nextRequest);
        if (res != OK) {
            SET_ERR("RequestThread: Unable to insert dummy trigger IDs "
                    "(capture request %d, HAL device: %s (%d)",
                    request.frame_number, strerror(-res), res);
            cleanUpFailedRequest(request, nextRequest, outputBuffers);
            return false;
        }

        /**
         * The request should be presorted so accesses in HAL
         *   are O(logn). Sidenote, sorting a sorted metadata is nop.
         */
        nextRequest->mSettings.sort();
        request.settings = nextRequest->mSettings.getAndLock();
        mPrevRequest = nextRequest;
        ALOGVV("%s: Request settings are NEW", __FUNCTION__);

        IF_ALOGV() {
            camera_metadata_ro_entry_t e = camera_metadata_ro_entry_t();
            find_camera_metadata_ro_entry(
                    request.settings,
                    ANDROID_CONTROL_AF_TRIGGER,
                    &e
            );
            if (e.count > 0) {
                ALOGV("%s: Request (frame num %d) had AF trigger 0x%x",
                      __FUNCTION__,
                      request.frame_number,
                      e.data.u8[0]);
            }
        }
    } else {
        // leave request.settings NULL to indicate 'reuse latest given'
        ALOGVV("%s: Request settings are REUSED",
               __FUNCTION__);
    }

    camera3_stream_buffer_t inputBuffer;

    // Fill in buffers

    if (nextRequest->mInputStream != NULL) {
        request.input_buffer = &inputBuffer;
        res = nextRequest->mInputStream->getInputBuffer(&inputBuffer);
        if (res != OK) {
            ALOGE("RequestThread: Can't get input buffer, skipping request:"
                    " %s (%d)", strerror(-res), res);
            cleanUpFailedRequest(request, nextRequest, outputBuffers);
            return true;
        }
    } else {
        request.input_buffer = NULL;
    }

    outputBuffers.insertAt(camera3_stream_buffer_t(), 0,
            nextRequest->mOutputStreams.size());
    request.output_buffers = outputBuffers.array();
    for (size_t i = 0; i < nextRequest->mOutputStreams.size(); i++) {
        res = nextRequest->mOutputStreams.editItemAt(i)->
                getBuffer(&outputBuffers.editItemAt(i));
        if (res != OK) {
            ALOGE("RequestThread: Can't get output buffer, skipping request:"
                    " %s (%d)", strerror(-res), res);
            cleanUpFailedRequest(request, nextRequest, outputBuffers);
            return true;
        }
        request.num_output_buffers++;
    }

    // Log request in the in-flight queue
    sp<Camera3Device> parent = mParent.promote();
    if (parent == NULL) {
        CLOGE("RequestThread: Parent is gone");
        cleanUpFailedRequest(request, nextRequest, outputBuffers);
        return false;
    }

    res = parent->registerInFlight(request.frame_number,
            request.num_output_buffers, nextRequest->mResultExtras);
    ALOGVV("%s: registered in flight requestId = %" PRId32 ", frameNumber = %" PRId64
           ", burstId = %" PRId32 ".",
            __FUNCTION__,
            nextRequest->mResultExtras.requestId, nextRequest->mResultExtras.frameNumber,
            nextRequest->mResultExtras.burstId);
    if (res != OK) {
        SET_ERR("RequestThread: Unable to register new in-flight request:"
                " %s (%d)", strerror(-res), res);
        cleanUpFailedRequest(request, nextRequest, outputBuffers);
        return false;
    }

    // Inform waitUntilRequestProcessed thread of a new request ID
    {
        Mutex::Autolock al(mLatestRequestMutex);

        mLatestRequestId = requestId;
        mLatestRequestSignal.signal();
    }

    // Submit request and block until ready for next one
    ATRACE_ASYNC_BEGIN("frame capture", request.frame_number);
    ATRACE_BEGIN("camera3->process_capture_request");
    res = mHal3Device->ops->process_capture_request(mHal3Device, &request);
    ATRACE_END();

    if (res != OK) {
        SET_ERR("RequestThread: Unable to submit capture request %d to HAL"
                " device: %s (%d)", request.frame_number, strerror(-res), res);
        cleanUpFailedRequest(request, nextRequest, outputBuffers);
        return false;
    }

    // Update the latest request sent to HAL
    if (request.settings != NULL) { // Don't update them if they were unchanged
        Mutex::Autolock al(mLatestRequestMutex);

        camera_metadata_t* cloned = clone_camera_metadata(request.settings);
        mLatestRequest.acquire(cloned);
    }

    if (request.settings != NULL) {
        nextRequest->mSettings.unlock(request.settings);
    }

    // Remove any previously queued triggers (after unlock)
    res = removeTriggers(mPrevRequest);
    if (res != OK) {
        SET_ERR("RequestThread: Unable to remove triggers "
              "(capture request %d, HAL device: %s (%d)",
              request.frame_number, strerror(-res), res);
        return false;
    }
    mPrevTriggers = triggerCount;

    // Return input buffer back to framework
    if (request.input_buffer != NULL) {
        Camera3Stream *stream =
            Camera3Stream::cast(request.input_buffer->stream);
        res = stream->returnInputBuffer(*(request.input_buffer));
        // Note: stream may be deallocated at this point, if this buffer was the
        // last reference to it.
        if (res != OK) {
            ALOGE("%s: RequestThread: Can't return input buffer for frame %d to"
                    "  its stream:%s (%d)",  __FUNCTION__,
                    request.frame_number, strerror(-res), res);
            // TODO: Report error upstream
        }
    }

    return true;
}

CameraMetadata Camera3Device::RequestThread::getLatestRequest() const {
    Mutex::Autolock al(mLatestRequestMutex);

    ALOGV("RequestThread::%s", __FUNCTION__);

    return mLatestRequest;
}


void Camera3Device::RequestThread::cleanUpFailedRequest(
        camera3_capture_request_t &request,
        sp<CaptureRequest> &nextRequest,
        Vector<camera3_stream_buffer_t> &outputBuffers) {

    if (request.settings != NULL) {
        nextRequest->mSettings.unlock(request.settings);
    }
    if (request.input_buffer != NULL) {
        request.input_buffer->status = CAMERA3_BUFFER_STATUS_ERROR;
        nextRequest->mInputStream->returnInputBuffer(*(request.input_buffer));
    }
    for (size_t i = 0; i < request.num_output_buffers; i++) {
        outputBuffers.editItemAt(i).status = CAMERA3_BUFFER_STATUS_ERROR;
        nextRequest->mOutputStreams.editItemAt(i)->returnBuffer(
            outputBuffers[i], 0);
    }
}

sp<Camera3Device::CaptureRequest>
        Camera3Device::RequestThread::waitForNextRequest() {
    status_t res;
    sp<CaptureRequest> nextRequest;

    // Optimized a bit for the simple steady-state case (single repeating
    // request), to avoid putting that request in the queue temporarily.
    Mutex::Autolock l(mRequestLock);

    while (mRequestQueue.empty()) {
        if (!mRepeatingRequests.empty()) {
            // Always atomically enqueue all requests in a repeating request
            // list. Guarantees a complete in-sequence set of captures to
            // application.
            const RequestList &requests = mRepeatingRequests;
            RequestList::const_iterator firstRequest =
                    requests.begin();
            nextRequest = *firstRequest;
            mRequestQueue.insert(mRequestQueue.end(),
                    ++firstRequest,
                    requests.end());
            // No need to wait any longer

            mRepeatingLastFrameNumber = mFrameNumber + requests.size() - 1;

            break;
        }

        res = mRequestSignal.waitRelative(mRequestLock, kRequestTimeout);

        if ((mRequestQueue.empty() && mRepeatingRequests.empty()) ||
                exitPending()) {
            Mutex::Autolock pl(mPauseLock);
            if (mPaused == false) {
                ALOGV("%s: RequestThread: Going idle", __FUNCTION__);
                mPaused = true;
                // Let the tracker know
                sp<StatusTracker> statusTracker = mStatusTracker.promote();
                if (statusTracker != 0) {
                    statusTracker->markComponentIdle(mStatusId, Fence::NO_FENCE);
                }
            }
            // Stop waiting for now and let thread management happen
            return NULL;
        }
    }

    if (nextRequest == NULL) {
        // Don't have a repeating request already in hand, so queue
        // must have an entry now.
        RequestList::iterator firstRequest =
                mRequestQueue.begin();
        nextRequest = *firstRequest;
        mRequestQueue.erase(firstRequest);
    }

    // In case we've been unpaused by setPaused clearing mDoPause, need to
    // update internal pause state (capture/setRepeatingRequest unpause
    // directly).
    Mutex::Autolock pl(mPauseLock);
    if (mPaused) {
        ALOGV("%s: RequestThread: Unpaused", __FUNCTION__);
        sp<StatusTracker> statusTracker = mStatusTracker.promote();
        if (statusTracker != 0) {
            statusTracker->markComponentActive(mStatusId);
        }
    }
    mPaused = false;

    // Check if we've reconfigured since last time, and reset the preview
    // request if so. Can't use 'NULL request == repeat' across configure calls.
    if (mReconfigured) {
        mPrevRequest.clear();
        mReconfigured = false;
    }

    if (nextRequest != NULL) {
        nextRequest->mResultExtras.frameNumber = mFrameNumber++;
    }
    return nextRequest;
}

bool Camera3Device::RequestThread::waitIfPaused() {
    status_t res;
    Mutex::Autolock l(mPauseLock);
    while (mDoPause) {
        if (mPaused == false) {
            mPaused = true;
            ALOGV("%s: RequestThread: Paused", __FUNCTION__);
            // Let the tracker know
            sp<StatusTracker> statusTracker = mStatusTracker.promote();
            if (statusTracker != 0) {
                statusTracker->markComponentIdle(mStatusId, Fence::NO_FENCE);
            }
        }

        res = mDoPauseSignal.waitRelative(mPauseLock, kRequestTimeout);
        if (res == TIMED_OUT || exitPending()) {
            return true;
        }
    }
    // We don't set mPaused to false here, because waitForNextRequest needs
    // to further manage the paused state in case of starvation.
    return false;
}

void Camera3Device::RequestThread::unpauseForNewRequests() {
    // With work to do, mark thread as unpaused.
    // If paused by request (setPaused), don't resume, to avoid
    // extra signaling/waiting overhead to waitUntilPaused
    mRequestSignal.signal();
    Mutex::Autolock p(mPauseLock);
    if (!mDoPause) {
        ALOGV("%s: RequestThread: Going active", __FUNCTION__);
        if (mPaused) {
            sp<StatusTracker> statusTracker = mStatusTracker.promote();
            if (statusTracker != 0) {
                statusTracker->markComponentActive(mStatusId);
            }
        }
        mPaused = false;
    }
}

void Camera3Device::RequestThread::setErrorState(const char *fmt, ...) {
    sp<Camera3Device> parent = mParent.promote();
    if (parent != NULL) {
        va_list args;
        va_start(args, fmt);

        parent->setErrorStateV(fmt, args);

        va_end(args);
    }
}

status_t Camera3Device::RequestThread::insertTriggers(
        const sp<CaptureRequest> &request) {

    Mutex::Autolock al(mTriggerMutex);

    CameraMetadata &metadata = request->mSettings;
    size_t count = mTriggerMap.size();

    for (size_t i = 0; i < count; ++i) {
        RequestTrigger trigger = mTriggerMap.valueAt(i);

        uint32_t tag = trigger.metadataTag;
        camera_metadata_entry entry = metadata.find(tag);

        if (entry.count > 0) {
            /**
             * Already has an entry for this trigger in the request.
             * Rewrite it with our requested trigger value.
             */
            RequestTrigger oldTrigger = trigger;

            oldTrigger.entryValue = entry.data.u8[0];

            mTriggerReplacedMap.add(tag, oldTrigger);
        } else {
            /**
             * More typical, no trigger entry, so we just add it
             */
            mTriggerRemovedMap.add(tag, trigger);
        }

        status_t res;

        switch (trigger.getTagType()) {
            case TYPE_BYTE: {
                uint8_t entryValue = static_cast<uint8_t>(trigger.entryValue);
                res = metadata.update(tag,
                                      &entryValue,
                                      /*count*/1);
                break;
            }
            case TYPE_INT32:
                res = metadata.update(tag,
                                      &trigger.entryValue,
                                      /*count*/1);
                break;
            default:
                ALOGE("%s: Type not supported: 0x%x",
                      __FUNCTION__,
                      trigger.getTagType());
                return INVALID_OPERATION;
        }

        if (res != OK) {
            ALOGE("%s: Failed to update request metadata with trigger tag %s"
                  ", value %d", __FUNCTION__, trigger.getTagName(),
                  trigger.entryValue);
            return res;
        }

        ALOGV("%s: Mixed in trigger %s, value %d", __FUNCTION__,
              trigger.getTagName(),
              trigger.entryValue);
    }

    mTriggerMap.clear();

    return count;
}

status_t Camera3Device::RequestThread::removeTriggers(
        const sp<CaptureRequest> &request) {
    Mutex::Autolock al(mTriggerMutex);

    CameraMetadata &metadata = request->mSettings;

    /**
     * Replace all old entries with their old values.
     */
    for (size_t i = 0; i < mTriggerReplacedMap.size(); ++i) {
        RequestTrigger trigger = mTriggerReplacedMap.valueAt(i);

        status_t res;

        uint32_t tag = trigger.metadataTag;
        switch (trigger.getTagType()) {
            case TYPE_BYTE: {
                uint8_t entryValue = static_cast<uint8_t>(trigger.entryValue);
                res = metadata.update(tag,
                                      &entryValue,
                                      /*count*/1);
                break;
            }
            case TYPE_INT32:
                res = metadata.update(tag,
                                      &trigger.entryValue,
                                      /*count*/1);
                break;
            default:
                ALOGE("%s: Type not supported: 0x%x",
                      __FUNCTION__,
                      trigger.getTagType());
                return INVALID_OPERATION;
        }

        if (res != OK) {
            ALOGE("%s: Failed to restore request metadata with trigger tag %s"
                  ", trigger value %d", __FUNCTION__,
                  trigger.getTagName(), trigger.entryValue);
            return res;
        }
    }
    mTriggerReplacedMap.clear();

    /**
     * Remove all new entries.
     */
    for (size_t i = 0; i < mTriggerRemovedMap.size(); ++i) {
        RequestTrigger trigger = mTriggerRemovedMap.valueAt(i);
        status_t res = metadata.erase(trigger.metadataTag);

        if (res != OK) {
            ALOGE("%s: Failed to erase metadata with trigger tag %s"
                  ", trigger value %d", __FUNCTION__,
                  trigger.getTagName(), trigger.entryValue);
            return res;
        }
    }
    mTriggerRemovedMap.clear();

    return OK;
}

status_t Camera3Device::RequestThread::addDummyTriggerIds(
        const sp<CaptureRequest> &request) {
    // Trigger ID 0 has special meaning in the HAL2 spec, so avoid it here
    static const int32_t dummyTriggerId = 1;
    status_t res;

    CameraMetadata &metadata = request->mSettings;

    // If AF trigger is active, insert a dummy AF trigger ID if none already
    // exists
    camera_metadata_entry afTrigger = metadata.find(ANDROID_CONTROL_AF_TRIGGER);
    camera_metadata_entry afId = metadata.find(ANDROID_CONTROL_AF_TRIGGER_ID);
    if (afTrigger.count > 0 &&
            afTrigger.data.u8[0] != ANDROID_CONTROL_AF_TRIGGER_IDLE &&
            afId.count == 0) {
        res = metadata.update(ANDROID_CONTROL_AF_TRIGGER_ID, &dummyTriggerId, 1);
        if (res != OK) return res;
    }

    // If AE precapture trigger is active, insert a dummy precapture trigger ID
    // if none already exists
    camera_metadata_entry pcTrigger =
            metadata.find(ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER);
    camera_metadata_entry pcId = metadata.find(ANDROID_CONTROL_AE_PRECAPTURE_ID);
    if (pcTrigger.count > 0 &&
            pcTrigger.data.u8[0] != ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE &&
            pcId.count == 0) {
        res = metadata.update(ANDROID_CONTROL_AE_PRECAPTURE_ID,
                &dummyTriggerId, 1);
        if (res != OK) return res;
    }

    return OK;
}


/**
 * Static callback forwarding methods from HAL to instance
 */

void Camera3Device::sProcessCaptureResult(const camera3_callback_ops *cb,
        const camera3_capture_result *result) {
    Camera3Device *d =
            const_cast<Camera3Device*>(static_cast<const Camera3Device*>(cb));
    d->processCaptureResult(result);
}

void Camera3Device::sNotify(const camera3_callback_ops *cb,
        const camera3_notify_msg *msg) {
    Camera3Device *d =
            const_cast<Camera3Device*>(static_cast<const Camera3Device*>(cb));
    d->notify(msg);
}

}; // namespace android