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这一篇我们开始讲： 相机拍照无响应问题分析一：【MEMORY_NOT_ENOUGH导致】持续快拍，一会儿无法拍照了
目录
[2.2 ：分析拍照是否失败](#2.2 ：分析拍照是否失败)
[2.3 ：查看内存状态](#2.3 ：查看内存状态)
[2.4 ：继续查看拍照状态](#2.4 ：继续查看拍照状态)
[2.5 ：解决方案](#2.5 ：解决方案)
一、问题背景
使用快拍模式，持续快拍一段时间后，无法继续拍照，拍照无响应了
二、问题分析过程
2.1：基于原理分析
从现象看，拍照流程出现了问题，我们需要分析整个拍照过程流程，而无法拍照，是相机APP上层的一种表现，我们可以先从相机APP角度分析日志，看流程哪里出现问题。
2.2 ：分析拍照是否失败
1：参考HAL3一级日志关键字：相机Camera日志分析之三十一：高通Camx HAL十种流程基础分析关键字汇总（后续持续更新中）
2：我们搜索CaptureFailed关键字，看看是否拍照失败
cpp行 9988: 08-02 17:00:51.731 7484 7712 E CameraAutoLogHelper: tryCatchCaptureFailedLog, reason: CF_MEMORY_IS_NOT_ENOUGH, reasonIndex: 2 行 9989: 08-02 17:00:51.731 7484 7712 E CameraAutoLogHelper: tryCatchCaptureFailedLog inner, reason: CF_MEMORY_IS_NOT_ENOUGH 行 9998: 08-02 17:00:51.744 7484 7712 E CameraService: onCaptureFailed 行 10001: 08-02 17:00:51.745 7484 7484 E CameraCaptureProcessor: onCaptureFailed, capture: 20从日志看，确实拍照失败，且是内存不足，我们进一步看拍照场景情况。
2.3 ：查看内存状态
从日志看，进入低内存LMK状态，available memory:1038，有效内存为1G左右，而当前机型是12G，因此内存极度匮乏。
cpp10065 08-02 17:00:51.808 961 961 E lowmemorykiller: device memory 258676 free 56992 file 247714 10103 08-02 17:00:51.864 961 961 E lowmemorykiller: device memory 261903 free 58109 file 248987 10133 08-02 17:00:51.927 2645 4214 W : AthenaLocalService: requestId:904, type:force-speed, [available{1037, 1600, 69, 500, 99, 1037, true}] 10136 08-02 17:00:51.928 2645 4654 I : MemoryGuardAction: [START] clear_type=392[4012], available memory:1038, fast=true, [available{1037, 1600, 69, 500, 99, 1037, true}]
2.4 ：继续查看拍照状态
从日志看：
- 拍照前只有不到1G内存：available memory:1008MB,
- 拍照失败这次之前已经拍照12张：Shutter Respond Start, count: 12
- 此次拍照为快拍状态，快拍6张：capture, burstCapture with picture count: 6
- 此次拍照提示拍照内存不足：isAllowedToTakePicture, MEMORY_NOT_ENOUGH。
- 返回拍照失败：onCaptureFailed
- 提示无法继续拍照：takePicture, not allow take picture。
cpp08-02 17:00:51.183 2645 4654 I : MemoryGuardAction: [FINISH] clear_type: 392[4012], available memory:1008MB, reclaimMem:3MB, fast:true, 44ms, [available{1005, 1600, 69, 500, 99, 1005, true}] 08-02 17:00:51.663 7484 7484 E Camera_CameraControlUI: onShutterButtonClick, ShutterButton.id: 2131297623 08-02 17:00:51.663 7484 7484 W Camera_CommonCapMode: onCameraShutterButtonClick 08-02 17:00:51.666 7484 7712 E Camera_y1_BaseMode: CameraTest Shutter Respond Start, count: 12 08-02 17:00:51.666 7484 7712 E Camera_y1_BaseMode: CameraTest Shutter Respond Start 08-02 17:00:51.669 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 1 08-02 17:00:51.669 7484 7712 W Camera_CaptureProcessor: capture, ID: 20, request burst-shot: false, supportEv: false, zslFrameCount: 0 08-02 17:00:51.671 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 2 08-02 17:00:51.707 961 961 E lowmemorykiller: device memory 262445 free 56294 file 246765 08-02 17:00:51.724 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 3 08-02 17:00:51.728 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 4 08-02 17:00:51.729 7484 7712 W Camera_CaptureProcessor: capture, burstCapture with picture count: 6 08-02 17:00:51.729 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 5 08-02 17:00:51.730 7484 7712 E Camera_TRACE: traceBeginSection, msg: CameraPerformance.MEMORY_NOT_ENOUGH 08-02 17:00:51.730 7484 7712 E Camera_TRACE: traceEndSection, msg: CameraPerformance.MEMORY_NOT_ENOUGH 08-02 17:00:51.730 7484 7712 W Camera, BaseMode: isAllowedToTakePicture, MEMORY_NOT_ENOUGH 08-02 17:00:51.731 7484 7712 E Camera, ProducerImpl: onCameraCaptureFailError, error result: CF_MEMORY_IS_NOT_ENOUGH 08-02 17:00:51.731 7484 7712 E Camera_OneCameraImpl: onCameraCaptureFailError, error: CF_MEMORY_IS_NOT_ENOUGH 08-02 17:00:51.731 7484 7712 E Camera_AutoLogHelper: tryCatchCaptureFailedLog, reason: CF_MEMORY_IS_NOT_ENOUGH, reasonIndex: 2 08-02 17:00:51.731 7484 7712 E Camera_AutoLogHelper: tryCatchCaptureFailedLog inner, reason: CF_MEMORY_IS_NOT_ENOUGH 08-02 17:00:51.744 7484 7712 E Camera_Service: onCaptureFailed 08-02 17:00:51.745 7484 7712 E Camera, ProducerImpl: takePicture, not allow take picture, mbFinishAddFrame: true, isCaptureAlgoInitializing: false, checkResult: 2, isCShot: false 08-02 17:00:51.745 7484 7484 E Camera_CaptureProcessor: onCaptureFailed, capture: 20 10001 08-02 17:00:51.745 7484 7484 E Camera_CaptureProcessor: onCaptureFailed, capture: 20 10002 08-02 17:00:51.745 7484 7712 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 6 10005 08-02 17:00:51.748 7484 7712 W Camera_y1_BaseMode: capture, ID: 20 10006 08-02 17:00:51.752 7484 7484 E Camera_y1_BaseMode: resetCaptureDecisionCaptureState, isResetDecision: true 10026 08-02 17:00:51.780 7484 8083 E Camera_LogCatcher: doCatch, request: Request{requestReason='CF_MEMORY_IS_NOT_ENOUGH', mLux=-1, mExceptionID=268505089, mMemoryAvailable=-1.0, mRunningMemoryAvailable=-1.0, mTemperature=-1.0, mCaptureModeName='common', mTimeStamp=1754125251731'} 10029 08-02 17:00:51.783 7484 7484 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: -1 10030 08-02 17:00:51.784 7484 7484 W Camera_CaptureProcessor: completeCapture, capture: 20, success: false, mForegroundCaptureId: 20 10031 08-02 17:00:51.784 7484 7484 E Camera_y1_BaseMode: resetCaptureDecisionCaptureState, isResetDecision: true 10033 08-02 17:00:51.785 7484 7484 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 20 10035 08-02 17:00:51.786 7484 7484 E Camera_LivePhotoPresenter: onCaptureStageChanged, at least one of [mediaCodec audioRecorder audioEncoder] is not prepare, stage: 100
2.5 ：解决方案
解决方案：
- 分析是否存在内存泄漏，并解决内存泄漏。
- 进行内存占用峰值优化。
- 在拍照逻辑上调整策略，如果处于低内存状态下，拍照从多帧切为单帧拍照，当内存充足的情况下，再切为多帧拍照。
- 调整查杀策略，是否内存。
- 调整算法不允许拍照的阀值。
- 低内存状态下切换算法，或减少算法处理。
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