小蓝相机HDR拍照流程分析

程序员Android2025-02-16 21:18

和你一起终身学 习，这里是程序员Android
经典好文推荐，通过阅读本文，您将收获以下知识点:

  1. HDR 场景下发 3 帧拍照请求
  2. HDR 3帧拍照请求帧（478,479 480）
  3. HDR 3帧 result callback帧
  4. HDR 算法处理
  5. 算法编解码处理
  6. HDR 拍照log关键字

1. HDR 场景下发 3 帧拍照请求

HDR 场景下，点击拍照按钮提交拍照请求，拍照请求帧为3帧（trace 中submitRequestList

下可以看到 3 个 createCaptureRequest

）。

点击拍照按钮提交拍照请求

2. HDR 3帧拍照请求帧（478,479 480）


3帧拍照请求帧

3. HDR 3帧 result callback帧


HDR 3帧 result callback帧

4. HDR 算法处理


HDR 算法处理

5.算法编解码处理


算法编解码处理

6. HDR 拍照log关键字

onShutterButtonFocus|connect call|Creating new stream|AlgoNativeInterface: HDR|AlgoNativeInterface: pAlgoParams|AlgoNativeInterface: algo process|IMG_20240829_195647.jpg|ACTION_UP|CAMAP_MAIN

部分log如下：

go 复制代码 
onShutterButtonFocus|connect call|Creating new stream|AlgoNativeInterface: HDR|AlgoNativeInterface: pAlgoParams|AlgoNativeInterface: algo process|IMG_20240829_195647.jpg|ACTION_UP|CAMAP_MAIN
    
    // 启动 cameraactivity
    行  205615: 08-29 19:56:29.548 10140 30284 30284 D _V_CAM_CameraActivity: CAMAP_MAIN: [Thread:main] CameraActivity---onStart, ActivityCode: 81415032
    行  205620: 08-29 19:56:29.551 10140 30284 30284 D _V_CAM_CameraActivity: CAMAP_MAIN: [Thread:main] CameraActivity---onNewIntent, ActivityCode: 81415032
    行  205755: 08-29 19:56:29.589 10140 30284 30284 V CAMAP_MAIN:: IS_LOG_CTRL_OPEN = true
    行  205756: 08-29 19:56:29.589 10140 30284 30284 D _V_CAM_CameraActivity: CAMAP_MAIN: [Thread:main] CameraActivity---onResumeTask, ActivityCode: 81415032 version: 12.1.78.8
    //  下发open camera
    行  205856: 08-29 19:56:29.632 10140 30284 19959 D _V_CAM_CameraModeProxyIml: CAMAP_MAIN: [Thread:camera_task] task thread---open camera E, CameraParam [ facing : FACING_BACK, modeName : Normal, cameraType : Master, mVModeInfo : 
    行  205863: 08-29 19:56:29.634 10140 30284 19959 D _V_CAM_CameraModeProxyIml: CAMAP_MAIN: [Thread:camera_task] task thread---open camera X
    //  连接cameraservice connect call
    行  205884: 08-29 19:56:29.646  1047  1557  3193 I CameraService: CameraService::connect call (PID 30284 "com.android.camera", camera ID 0) and Camera API version 2
    行  205956: 08-29 19:56:29.660 10140 30284 30284 D _V_CAM_StateMachine: CAMAP_MAIN: [Thread:main] change state --- photo : [ StateDestroy -> StateInit ]
    //  配3路流 Creating new stream
    行  206304: 08-29 19:56:29.769  1047  1557  3193 I Camera3-Device: Camera 0: Creating new stream 0: 1080 x 1080, format 34, dataspace 0 rotation 0 consumer usage 0, isShared 0, physicalCameraId , isMultiResolution 0 dynamicRangeProfile 0x1, streamUseCase 0, timestampBase 0, mirrorMode 0, colorSpace -1, useReadoutTimestamp 0
    行  206330: 08-29 19:56:29.775  1047  1557  3193 I Camera3-Device: Camera 0: Creating new stream 1: 1080 x 1080, format 35, dataspace 146931712 rotation 0 consumer usage 0, isShared 0, physicalCameraId , isMultiResolution 0 dynamicRangeProfile 0x1, streamUseCase 0, timestampBase 0, mirrorMode 0, colorSpace -1, useReadoutTimestamp 0
    行  206349: 08-29 19:56:29.787  1047  1557  3193 I Camera3-Device: Camera 0: Creating new stream 2: 3060 x 3060, format 35, dataspace 146931712 rotation 0 consumer usage 0, isShared 0, physicalCameraId , isMultiResolution 0 dynamicRangeProfile 0x1, streamUseCase 0, timestampBase 0, mirrorMode 0, colorSpace -1, useReadoutTimestamp 0
    行  207156: 08-29 19:56:30.141 10140 30284 19992 D _V_CAM_CameraModeProxyIml: CAMAP_MAIN: [Thread:camera_callback] onConfigured mode = BackNormalMainMode
    行  207163: 08-29 19:56:30.141 10140 30284 30284 D _V_CAM_StateMachine: CAMAP_MAIN: [Thread:main] change state --- photo : [ StateCameraOpened -> StateSessionCreated ]
    //  开始起预览请求 startPreview
    行  207247: 08-29 19:56:30.168 10140 30284 19959 D _V_CAM_CameraModeProxyIml: CAMAP_MAIN: [Thread:camera_task] ---startPreview PreviewParam {    [previewdetect = 140821240225795],    [eyeDetect = -1],    [previewAiDetect = [-1, -1]],    [vivo.control.ois = true],    [relight = 0],    [vivo.control.face.detect = true],    [vcamsdk.repeating.VideoStabilization = true],    [vivo.control.singleBlur_level = 0],    [vivo.control.portrait.effect = 0],    [vivo.record.eis.mode.enable = false],    [vivo.control.motionVersion=17],    [android.control.videoStabilizationMode=1],    [vivo.control.sod.state=0],    [vivo.parameter.temperature=43],    [vivo.control.captureStateForDetect=0],    [android.jpeg.orientation=90],    [vivo.parameter.cameraColdStart=false],    [custom.zoom=1.0],    [custom.flash_mode=0],    [custom.exposure_value=0],    }
    行  207407: 08-29 19:56:30.259 10140 30284 30284 D _V_CAM_ThumbnailAddition: CAMAP_MAIN: [Thread:main] updateThumbnailView
    //  首帧可用callback onFirstFrameAvailableCallback onFirstFrameAvailable
    行  207867: 08-29 19:56:30.431 10140 30284 19501 D _V_CAM_CameraActivity: CAMAP_MAIN: [Thread:VIEngine-Main]  onFirstFrameAvailableCallback
    行  207887: 08-29 19:56:30.437 10140 30284 30284 D _V_CAM_CameraActivity: CAMAP_MAIN: [Thread:main]  onFirstFrameAvailable
    //  HDR 场景下点击拍照 ACTION_UP  onShutterButtonFocus
    行  211606: 08-29 19:56:32.015 10069  3054  3054 D _V_InputEventReceiver: dispatchInputEvent ,vLog[a2c672 StatusBar (client)] ,event=MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=524.0, y[0]=420.0, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=76500757, downTime=76500650, deviceId=5, source=0x1002, displayId=0, eventId=17122441 }
    行  215088: 08-29 19:56:33.250 10069  3054  3054 D _V_InputEventReceiver: dispatchInputEvent ,vLog[375f109 NotificationShade (client)] ,event=MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=313.0, y[0]=651.0, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=76502116, downTime=76502045, deviceId=5, source=0x1002, displayId=0, eventId=980268846 }
    行  222254: 08-29 19:56:37.928 10069  3054  3054 D _V_InputEventReceiver: dispatchInputEvent ,vLog[375f109 NotificationShade (client)] ,event=MotionEvent { action=ACTION_UP, actionButton=0, id[0]=0, x[0]=686.0, y[0]=2186.0, toolType[0]=TOOL_TYPE_FINGER, buttonState=0, classification=NONE, metaState=0, flags=0x0, edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=76506799, downTime=76505392, deviceId=5, source=0x1002, displayId=0, eventId=840324513 }
    行  235965: 08-29 19:56:47.169 10140 30284 30284 D _V_CAM_BaseBottomBar: CAMAP_MAIN: [Thread:main] onShutterButtonFocus  pressed = true
    行  237770: 08-29 19:56:48.077 10122 10844  4581 D AlgoNativeInterface: algo process E
    //  HDR 算法处理
    行  237774: 08-29 19:56:48.077 10122 10844  4581 D AlgoNativeInterface: algo process img[0] fd 109 width 3060 height 3060 stride 3072 scanline 3072 size 14155776 numFds 2 numInts 23 version 12
    行  237775: 08-29 19:56:48.077 10122 10844  4581 D AlgoNativeInterface: algo process img[1] fd 111 width 3060 height 3060 stride 3072 scanline 3072 size 14155776 numFds 2 numInts 23 version 12
    行  237776: 08-29 19:56:48.078 10122 10844  4581 D AlgoNativeInterface: algo process img[2] fd 113 width 3060 height 3060 stride 3072 scanline 3072 size 14155776 numFds 2 numInts 23 version 12
    行  237779: 08-29 19:56:48.078 10122 10844  4581 D AlgoNativeInterface: algo process imageFormat: 0x23 requestId: 8
    行  237814: 08-29 19:56:48.080 10122 10844  4581 D AlgoNativeInterface: HDR 3-frames version
    行  237872: 08-29 19:56:48.090 10122 10844  4581 D AlgoNativeInterface: pAlgoParams->frameFlag: 1724932607175 localtime:20240829195647
    //  HDR 算法选帧 478 479 480 3帧
    行  237889: 08-29 19:56:48.090 10122 10844  4581 D AlgoNativeInterface: pAlgoParams->frameId[0]: 478
    行  237890: 08-29 19:56:48.090 10122 10844  4581 D AlgoNativeInterface: pAlgoParams->frameId[1]: 479
    行  237891: 08-29 19:56:48.090 10122 10844  4581 D AlgoNativeInterface: pAlgoParams->frameId[2]: 480
    行  237985: 08-29 19:56:48.095 10122 10844  4581 D AlgoNativeInterface: hdrGains[0]: 6.733059, hdrShutters[0]: 30.000000, hdrFrameIndex:0
    行  237986: 08-29 19:56:48.095 10122 10844  4581 D AlgoNativeInterface: hdrGains[1]: 10.965449, hdrShutters[1]: 30.000000, hdrFrameIndex:1
    行  237987: 08-29 19:56:48.095 10122 10844  4581 D AlgoNativeInterface: hdrGains[2]: 1.454850, hdrShutters[2]: 10.000000, hdrFrameIndex:2
    行  238000: 08-29 19:56:48.096 10122 10844  4581 D AlgoNativeInterface: pAlgoParams->shotAeRegions left:0 top:0 right:0 bottom:0
    行  238009: 08-29 19:56:48.098 10122 10844  4581 D AlgoNativeInterface: algo process: pAlgoParams->satCropRegions ltwh 0 0 0 0

参考文献：

【腾讯文档】Android Framework 知识库

https://docs.qq.com/doc/DSXBmSG9VbEROUXF5

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