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小白如何建网站,如何自建网站接广告,山东省建设注册执业中心网站,手机网站开发环境#xff08;1#xff09;背景分析 这是项目当中实际遇到的问题#xff0c;如下代码仅用作分析和记录。 现在问题的现象是#xff1a;刚亮屏大概在2s以内对着人脸一般是能解锁的#xff0c;但是超过2s之后在对着人脸#xff0c;是无法解锁成功的。 #xff08;2#…1背景分析 这是项目当中实际遇到的问题如下代码仅用作分析和记录。 现在问题的现象是刚亮屏大概在2s以内对着人脸一般是能解锁的但是超过2s之后在对着人脸是无法解锁成功的。 2Log分析 A从kernel Log分析 从Log来看相机模组是有正常上电的表示相机是有正常启动的。 //cat dev/kmsg | grep ov8856 6,1707232,24357395110,-; (0)[22056:powerOnSensor0]sensor_idx 1, power 1 curr_sensor_name ov8856_mipi_raw, enable list NULL 4,1707233,24357395119,-; (0)[22056:powerOnSensor0]sensor_idx 1, pin7, pin_state_on11, hw_id 2, hctzhb(ov8856_mipi_raw) 4,1707234,24357395135,-; (0)[22056:powerOnSensor0]sensor_idx 1, pin5, pin_state_on7, hw_id 0, hctzhb(ov8856_mipi_raw) 4,1707235,24357395587,-; (0)[22056:powerOnSensor0]sensor_idx 1, pin3, pin_state_on9, hw_id 0, hctzhb(ov8856_mipi_raw) 4,1707236,24357396060,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin4, pin_state_on3, hw_id 0, hctzhb(ov8856_mipi_raw) 4,1707237,24357398161,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin6, pin_state_on9, hw_id 0, hctzhb(ov8856_mipi_raw) 4,1707238,24357400667,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin1, pin_state_on0, hw_id 1, hctzhb(ov8856_mipi_raw) 4,1707239,24357400690,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin1, pin_state_on11, hw_id 1, hctzhb(ov8856_mipi_raw) 4,1707240,24357400698,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin2, pin_state_on0, hw_id 1, hctzhb(ov8856_mipi_raw) 4,1707241,24357400707,-; (1)[22056:powerOnSensor0]sensor_idx 1, pin2, pin_state_on11, hw_id 1, hctzhb(ov8856_mipi_raw)B从main Log分析 D MtkCam/P1NodeImp: [init] D MtkCam/P1NodeImp: [init] -I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-init I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-init —I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-configPipe I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-configPipe —I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mp3A-start I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpISP-start I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-start I MtkCam/P1NodeImp: [hardwareOps_start] [Cam::1] mpCamIO-start —可以看出相机的Hal P1流程是有正常走的而我们看一下P1是否有接收到数据。 I MtkCam/P1NodeImp: [setRequest] [Cam::1 R2 S2 E1 D1 O1 #0] [P1::SET][Num Q:2 M:2 F:0 R:0 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[2] Ctrl[1][ 2 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R3 S3 E2 D1 O1 #1] [P1::SET][Num Q:3 M:3 F:1 R:1 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[3] Ctrl[1][ 3 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R4 S4 E3 D1 O1 #1] [P1::SET][Num Q:4 M:4 F:2 R:2 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[4] Ctrl[1][ 4 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R5 S5 E4 D2 O2 #0] [P1::SET][Num Q:5 M:5 F:3 R:3 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[5] Ctrl[1][ 5 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R6 S6 E5 D3 O3 #1] [P1::SET][Num Q:6 M:6 F:4 R:4 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[6] Ctrl[1][ 6 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R7 S7 E6 D4 O4 #0] [P1::SET][Num Q:7 M:7 F:5 R:5 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[7] Ctrl[1][ 7 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R8 S8 E7 D5 O5 #0] [P1::SET][Num Q:8 M:8 F:6 R:6 0][Type:1 Out:x81 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[8] Ctrl[1][ 8 ] //异常Log I MtkCam/P1NodeImp: [setRequest] [Cam::1 R9 S9 E8 D6 O6 #0] [P1::SET][Num Q:9 M:9 F:-1 R:-1 0][Type:3 Out:x82 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[9] Ctrl[1][ 9 ] I MtkCam/P1NodeImp: [setRequest] [Cam::1 R10 S10 E9 D7 O7 #0] [P1::SET][Num Q:10 M:10 F:-1 R:-1 0][Type:3 Out:x82 Rec:x0 Raw:0 Cap:0 Exe:1 Flush:x0] Num[10] Ctrl[1][ 10 ]从上面的Log可以看到当超过7 frames之后P1并不是真正的在出帧了而是P1在做垫帧我们在来看一下P2是否有接收到数据。 D MtkCam/P2/StreamingNode: [init] P2S cam 1: D MtkCam/P2/StreamingNode: [init-] P2S cam 1:D MtkCam/P2/StreamingNode: [config] P2S cam 1: D MtkCam/P2/StreamingNode: [config-] P2S cam 1:D MtkCam/P2/StreamingProcessor: [onThreadStart] P2S cam 1: D MtkCam/P2/StreamingProcessor: [onThreadStart-] P2S cam 1: 可以看出相机的Hal P2流程也是有正常走的而我们看一下P2是否有接收到数据。 D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#0 MWReq:#0, frame 1 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[0.00] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#1 MWReq:#1, frame 2 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[30.30] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#2 MWReq:#2, frame 3 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[29.41] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#3 MWReq:#3, frame 4 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[28.85] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#4 MWReq:#4, frame 5 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[29.63] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#5 MWReq:#5, frame 6 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[29.76] D MtkCam/P2/MWFrameRequest: [printIOMap] P2S cam 1 MWFrame:#6 MWReq:#6, frame 7 : iomap: [0]img[¹⁄₁], meta[³⁄₂], fps[28.99]从Log来看P2也是只接收到7 frames就再也没收接收到Request请求了。 3根本原因 以上种种分析可以看到实际上Hal只接受到了7frames的request那我们看一下实际是否是这样的呢通过搜索ULog发现 D ULog : R AppRequest:0 M[CameraDevice:187001] :mtkcam-dev3 #1990 D ULog : R AppRequest:1 M[CameraDevice:187001] :mtkcam-dev3 #1993 D ULog : R AppRequest:2 M[CameraDevice:187001] :mtkcam-dev3 #1994 D ULog : R AppRequest:3 M[CameraDevice:187001] :mtkcam-dev3 #1995 D ULog : R AppRequest:4 M[CameraDevice:187001] :mtkcam-dev3 #1996 D ULog : R AppRequest:5 M[CameraDevice:187001] :mtkcam-dev3 #1998 D ULog : R AppRequest:6 M[CameraDevice:187001] :mtkcam-dev3 #2000D ULog : R AppRequest:0 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #1997 D ULog : R AppRequest:1 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #1999 D ULog : R AppRequest:2 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #2001 D ULog : R AppRequest:3 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #2002 D ULog : R AppRequest:4 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #2003 D ULog : R AppRequest:5 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #2004 D ULog : R AppRequest:6 M[CameraDevice:187001] - :mtkcam-AppStreamMgr #2005实际上层只发送了7 frames的request。所以才造成P1和P2都只有7 frames的有效数据。 通过排查Log报错发现有以下Error 06-05 13:59:11.621877 829 15363 E HidlCamera3-Device: processBatchCaptureRequests: Transaction error: Status(EX_TRANSACTION_FAILED): FAILED_TRANSACTION: 06-05 13:59:11.621932 829 15363 E Camera3-Device: Camera 1: sendRequestsBatch: RequestThread: Unable to submit capture request 7 to HAL device: Broken pipe (-32)可以看到是Framework层发送request报错了从而导致request无法下到Hal。那引起发送request失败的原因是什么我们在从Log中发现如下 W C3Dev-1-ReqQueu: type1400 audit(0.0:649): avc: denied { use } for pathanon_inode:sync_file devanon_inodefs ino6816 scontextu:r:mtk_hal_camera:s0 tcontextu:r:hal_face_default:s0 tclassfd permissive0看起来像是avc权限导致的我们使用setenforce 0测试一下发现确实这里就是根本原因了。