AF 对焦分析

开启调试开关：

adb shell setprop debug.af.enable 1
adb shell setprop debug.af_mgr.enable 1
adb shell setprop debug.pd.enable 1
adb shell setprop debug.af.log.enable 1

从目前的log来看，对焦成功时，AE达到stable：
31792 01-01 19:16:09.218180 214 8202 D AfAlgo : [AppVAFC][INIT][fv]220291445 [g]17 [AEStbl]1 [ISO]250==========================
31793 01-01 19:16:09.218241 214 8202 D AfAlgo : [AfAlgo][cnt]28 [6]66098 [5]65994 [4]57094 [3]26114 [2]22521 [1]25519 [0]220291445 [TH]26434973 [StableCnt]0
31796 01-01 19:16:09.218359 214 8202 D af_mgr : [AFStatH]218596445 [AFStatV]565000 [moveMCUTG] 420
31829 01-01 19:16:09.245530 214 8202 D AfAlgo : [AppVAFC][INIT][fv]199159 [g]17 [AEStbl]1 [ISO]250==========================
31830 01-01 19:16:09.245591 214 8202 D AfAlgo : [AfAlgo][cnt]29 [6]65994 [5]57094 [4]26114 [3]22521 [2]25519 [1]220291445 [0]199159 [TH]23899 [StableCnt]0
31833 01-01 19:16:09.245704 214 8202 D af_mgr : [AFStatH]188917 [AFStatV]3414 [moveMCUTG] 420
31879 01-01 19:16:09.285641 214 8202 D AfAlgo : [AppVAFC][INIT][fv]32610 [g]17 [AEStbl]1 [ISO]250==========================
31880 01-01 19:16:09.285704 214 8202 D AfAlgo : [AfAlgo][cnt]30 [6]57094 [5]26114 [4]22521 [3]25519 [2]220291445 [1]199159 [0]32610 [TH]10000 [StableCnt]1
31883 01-01 19:16:09.285819 214 8202 D af_mgr : [AFStatH]29307 [AFStatV]1101 [moveMCUTG] 420
32043 01-01 19:16:09.325923 214 8202 D AfAlgo : [AppVAFC][INIT][fv]2532 [g]17 [AEStbl]1 [ISO]250==========================
32044 01-01 19:16:09.325986 214 8202 D AfAlgo : [AfAlgo][cnt]31 [6]26114 [5]22521 [4]25519 [3]220291445 [2]199159 [1]32610 [0]2532 [TH]10000 [StableCnt]0
32047 01-01 19:16:09.327435 214 8202 D af_mgr : [AFStatH]2400 [AFStatV]44 [moveMCUTG] 420
32167 01-01 19:16:09.376802 214 8202 D AfAlgo : [AppVAFC][INIT][fv]1553 [g]17 [AEStbl]1 [ISO]250==========================
32168 01-01 19:16:09.376870 214 8202 D AfAlgo : [AfAlgo][cnt]32 [6]22521 [5]25519 [4]220291445 [3]199159 [2]32610 [1]2532 [0]1553 [TH]10000 [StableCnt]1
32173 01-01 19:16:09.377002 214 8202 D af_mgr : [AFStatH]1463 [AFStatV]30 [moveMCUTG] 420
32315 01-01 19:16:09.427836 214 8202 D AfAlgo : [AppVAFC][INIT][fv]2980 [g]17 [AEStbl]1 [ISO]250==========================
32316 01-01 19:16:09.427900 214 8202 D AfAlgo : [AfAlgo][cnt]33 [6]25519 [5]220291445 [4]199159 [3]32610 [2]2532 [1]1553 [0]2980 [TH]10000 [StableCnt]2
32319 01-01 19:16:09.428034 214 8202 D af_mgr : [AFStatH]2881 [AFStatV]33 [moveMCUTG] 420
32606 01-01 19:16:09.485943 214 8202 D AfAlgo : [AppVAFC][INIT][fv]5034 [g]17 [AEStbl]1 [ISO]250==========================
32607 01-01 19:16:09.486014 214 8202 D AfAlgo : [AfAlgo][cnt]34 [6]220291445 [5]199159 [4]32610 [3]2532 [2]1553 [1]2980 [0]5034 [TH]10000 [StableCnt]3
32608 01-01 19:16:09.486057 214 8202 D AfAlgo : [AfAlgo]Vlu is Stable

而对焦失败时，AE一直未能stable：
55341 01-01 19:16:19.697523 214 8202 D AfAlgo : [AppVAFC][INIT][fv]12349447 [g]22 [AEStbl]0 [ISO]215==========================
55342 01-01 19:16:19.697585 214 8202 D AfAlgo : [AfAlgo][cnt]26 [6]207898 [5]225428 [4]226395 [3]206595 [2]195496 [1]161509 [0]12349447 [TH]1481933 [StableCnt]0
55345 01-01 19:16:19.697715 214 8202 D af_mgr : [AFStatH]12097012 [AFStatV]84145 [moveMCUTG] 424
55380 01-01 19:16:19.736650 214 8202 D AfAlgo : [AppVAFC][INIT][fv]4736640 [g]22 [AEStbl]0 [ISO]215==========================
55381 01-01 19:16:19.736778 214 8202 D AfAlgo : [AfAlgo][cnt]27 [6]225428 [5]226395 [4]206595 [3]195496 [2]161509 [1]12349447 [0]4736640 [TH]568396 [StableCnt]0
55384 01-01 19:16:19.737036 214 8202 D af_mgr : [AFStatH]4024314 [AFStatV]237442 [moveMCUTG] 424
55430 01-01 19:16:19.786623 214 8202 D AfAlgo : [AppVAFC][INIT][fv]462356 [g]22 [AEStbl]0 [ISO]215==========================
55431 01-01 19:16:19.786750 214 8202 D AfAlgo : [AfAlgo][cnt]28 [6]226395 [5]206595 [4]195496 [3]161509 [2]12349447 [1]4736640 [0]462356 [TH]55482 [StableCnt]0
55434 01-01 19:16:19.786997 214 8202 D af_mgr : [AFStatH]402137 [AFStatV]20073 [moveMCUTG] 424
55559 01-01 19:16:19.837463 214 8202 D AfAlgo : [AppVAFC][INIT][fv]99976 [g]22 [AEStbl]0 [ISO]215==========================
55560 01-01 19:16:19.837594 214 8202 D AfAlgo : [AfAlgo][cnt]29 [6]206595 [5]195496 [4]161509 [3]12349447 [2]4736640 [1]462356 [0]99976 [TH]11997 [StableCnt]0
55565 01-01 19:16:19.837839 214 8202 D af_mgr : [AFStatH]88153 [AFStatV]3941 [moveMCUTG] 424
55770 01-01 19:16:19.939312 214 8202 D AfAlgo : [AppVAFC][INIT][fv]102548 [g]22 [AEStbl]0 [ISO]215==========================
55771 01-01 19:16:19.939375 214 8202 D AfAlgo : [AfAlgo][cnt]30 [6]195496 [5]161509 [4]12349447 [3]4736640 [2]462356 [1]99976 [0]102548 [TH]12305 [StableCnt]0

C、AF相关log如下：
1、类似如下log表示发送AFUpdate消息：
aaa_hal : [Hal3A::AFThreadFunc] AF waitIrq done
aaa_hal : [Hal3A::AFThreadFunc] StateMgr::sendCmd(ECmd_AFUpdate) done

2、在Preview界面，在aaa_state_camera_preview.cpp的StateCameraPreview::sendIntent(intent2type<eIntent_AFUpdate>)中，会执行setAE2AFInfo将AE信息更新给AFAlgo，然后调用doAF进行对焦：
IAfMgr::getInstance().setAE2AFInfo(m_pHal3A->getSensorDev(), rAEInfo);
IAfMgr::getInstance().doAF(m_pHal3A->getSensorDev(), reinterpret_cast<MVOID *>(rBufInfo.virtAddr));

3、在Video界面，在aaa_state_camcorder_preview.cpp的StateCamcorderPreview::sendIntent(intent2type<eIntent_AFUpdate>)中，仅执行doAF的操作：
IAfMgr::getInstance().doAF(m_pHal3A->getSensorDev(), reinterpret_cast<MVOID *>(rBufInfo.virtAddr));

4、由于StateCamcorderPreview::sendIntent(intent2type<eIntent_AFUpdate>)不会更新AE info给AFAlgo，导致AFAlgo得不到AE stable为1的结果，因此不能实现FV stable。

5、目前的修改是在StateCamcorderPreview::sendIntent(intent2type<eIntent_AFUpdate>)中更新AE info给AFAlgo，实现FV stable，最终对焦成功。