[CamX] AEC调试技巧

分析AEC问题时需要打开如下Log Group:

  • Sensor
  • Stats
  • AEC

打开Verbose和Info Log中的以上Group:

adb root
adb remount
adb shell "echo logVerboseMask=0x2000202 >> /vendor/etc/camera/
camxoverridesettings.txt" 
adb shell "echo logInfoMask=0x2000202 >> /vendor/etc/camera/
camxoverridesettings.txt" 
adb reboot

AEC算法每帧输出的信息, AEC_DEBUG_OUTPUT

搜索: AEC_DEBUG_OUTPUT

AEC_DEBUG_OUTPUT

对应打印Log的代码:

CAMX_LOG_VERBOSE(CamxLogGroupAEC,
                 "AEC_DEBUG_OUTPUT: %s FrameControl: G ET (0:%f %ld)(1:%f %ld)(2:%f %ld) LuxInd=%f EngAEState=%d "
                 "PreFlashState=%d FlashType=%d LED 1:2=%d:%d",
                 pTriggerName,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexShort].linearGain,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexShort].exposureTime,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexLong].linearGain,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexLong].exposureTime,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexSafe].linearGain,
                 pAlgoOutput->engineFrameControl.exposureData[ExposureIndexSafe].exposureTime,
                 pAlgoOutput->engineFrameControl.frameControl.luxIndex,
                 m_AECState, m_AECPreFlashState,
                 pAlgoOutput->engineFrameControl.frameControl.flashState,
                 pAlgoOutput->engineFrameControl.LEDCurrents[LEDSetting1],
                 pAlgoOutput->engineFrameControl.LEDCurrents[LEDSetting2]);

CAMX_LOG_VERBOSE(CamxLogGroupAEC,
                 "AEC_DEBUG_OUTPUT: %s FrameInfo: Settled=%d snapshotInd=%d LEDAFReq=%d FL:%f",
                 pTriggerName, pAlgoOutput->frameInfo.aecSettled,
                 pAlgoOutput->frameInfo.snapshotIndicator, pAlgoOutput->frameInfo.LEDAFRequired,
                 pAlgoOutput->frameInfo.frameLuma);

对应的Log输出:

11-13 17:16:22.823   881  1446 V CamX    : [ VERB][STATS_AEC] camxaecengine.cpp:3189 DumpAEEngineOutputResults() AEC_DEBUG_OUTPUT: AEFC:Preview FrameControl: G ET (0:4.348665 66277668)(1:4.348665 66277668)(2:4.348665 66277668) LuxInd=329.837830 EngAEState=3 PreFlashState=0 FlashType=0 LED 1:2=0:0
11-13 17:16:22.823   881  1446 V CamX    : [ VERB][STATS_AEC] camxaecengine.cpp:3195 DumpAEEngineOutputResults() AEC_DEBUG_OUTPUT: AEFC:Preview FrameInfo: Settled=1 snapshotInd=1 LEDAFReq=1 FL:78.712822

其中:

  • G ET表示Gain ExposureTime,有三组:
    • 短曝:(0:4.348665 66277668),Gain为4.348665,曝光时间为66277668(66ms)
    • 长曝:(1:4.348665 66277668),Gain为4.348665,曝光时间为66277668(66ms)
    • 正常曝:(2:4.348665 66277668),Gain为4.348665,曝光时间为66277668(66ms)
  • LuxInd表示Lux Index
  • EngAEState表示AEC的状态,状态定义如下:
    • AEC状态
  • PreFlashState表示Flash预闪状态,状态定义如下:
    • Flash预闪状态
  • FlashType表示闪光灯状态,状态定义如下:
    • 闪光灯状态
  • LED 1:2表示两个LED Setting状态

Sensor每帧计算和生效的曝光时间和Gain, CalculateExposure

搜索 CalculateExposure

CalculateExposure

对应打印log的代码:

CAMX_LOG_VERBOSE(CamxLogGroupSensor,
    "Long (TG:%f AG:%f DG:%f ISPG:%f LC:%u) Middle (TG:%f AG:%f DG:%f ISPG:%f LC:%u) "
    "Short (TG:%f AG:%f DG:%f ISPG:%f LC:%u)",
    realGain,
    pExposureInfo->analogRealGain,
    pExposureInfo->digitalRealGain,
    pExposureInfo->ISPDigitalGain,
    pExposureInfo->lineCount,
    middleRealGain,
    pExposureInfo->middleAnalogRealGain,
    pExposureInfo->middleDigitalRealGain,
    pExposureInfo->middleISPDigitalGain,
    pExposureInfo->middleLinecount,
    shortRealGain,
    pExposureInfo->shortAnalogRealGain,
    pExposureInfo->shortDigitalRealGain,
    pExposureInfo->shortISPDigitalGain,
    pExposureInfo->shortLinecount);

会得到下面的Log:

11-13 17:22:35.064   873  1372 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:22:35.605   873  1373 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:22:35.658   873  1375 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:22:35.783   873  1376 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:22:35.914   873  1371 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:22:35.959   873  1372 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:3.863595 AG:3.849624 DG:1.000000 ISPG:1.003629 LC:1220) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:1)
11-13 17:23:27.080   873  1374 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:5.590778 AG:5.562500 DG:1.000000 ISPG:1.005084 LC:3538) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:3)
11-13 17:23:27.133   873  1376 V CamX    : [ VERB][SENSOR ] camximagesensordata.cpp:1032 CalculateExposure() Long (TG:5.590778 AG:5.562500 DG:1.000000 ISPG:1.005084 LC:3538) Middle (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:0) Short (TG:0.000000 AG:0.000000 DG:0.000000 ISPG:0.000000 LC:3)

其中一些缩写的全称如下:

  • TG: Total Gain
  • AG: Analog Gain
  • DG: Digital Gain
  • ISPG: ISP Gain
  • LC: linecount

Sensor每帧输出的Metadata信息, PublishPerFrameSensorMetaData

搜索 PublishPerFrameSensorMetaData

PublishPerFrameSensorMetaData

对应打印Log的代码:

CAMX_LOG_INFO(CamxLogGroupSensor,
              "Sensor[%d]:ReqId[%llu]: contextTypeID: %d, frameDuration: %llu,"
              "exposureTime:[long: %llu, middle: %llu, short: %llu], "
              "sensorGain: [long: %f, middle: %f, short: %f], "
              "sensorSensitivity: [long: %d, middle: %d, short: %d], "
              "Again:[long: %f, middle: %f, short: %f], "
              "Dgain:[long: %f, middle: %f, short: %f], "
              "ISPDGain:[long: %f, middle:%f, short: %f], "
              "ISO100Gain:%f, rollingShutterSkew: %llu, FilterArrangement: %d resID %d",
              m_cameraId,
              requestId,
              contextTypeID,
              metaData.frameDuration,
              metaData.exposureTime,
              metaData.middleExposureTime,
              metaData.shortExposureTime,
              metaData.sensorGain,
              metaData.middleSensorGain,
              metaData.shortSensorGain,
              metaData.sensitivity,
              metaData.middleSensitivity,
              metaData.shortSensitivity,
              sensorAnalogRealGain,
              sensorMiddleAnalogRealGain,
              sensorShortAnalogRealGain,
              sensorDigitalRealGain,
              sensorMiddleDigitalRealGain,
              sensorShortDigitalRealGain,
              ISPDigitalGain,
              middleISPDigitalGain,
              shortISPDigitalGain,
              ISO100Gain,
              metaData.rollingShutterSkew,
              metaData.filterArrangement,
              m_currentResolutionIndex);

对应输出的Log:

11-13 17:39:32.968   880  1501 I CamX    : [ INFO][SENSOR ] camxsensornode.cpp:1622 PublishPerFrameSensorMetaData() Sensor[1]:ReqId[5]: contextTypeID: 0, frameDuration: 66307296,exposureTime:[long: 66277668, middle: 0, short: 56190], sensorGain: [long: 4.406250, middle: 0.000000, short: 0.000000], sensorSensitivity: [long: 441, middle: 0, short: 0], Again:[long: 4.406250, middle: 0.000000, short: 0.000000], Dgain:[long: 1.000000, middle: 0.000000, short: 0.000000], ISPDGain:[long: 1.001626, middle:0.000000, short: 0.000000], ISO100Gain:1.000000, rollingShutterSkew: 28321082, FilterArrangement: 2 resID 1
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