Camera 冷启动阶段分解

一、Camx trace 调试开关设置
二、Camx 调试开关设置懒人脚本
三、Camera 冷启动阶段分解分析

一、Camx trace 调试开关设置

1.设置 camxoverridesettings trace开关

    adb  root
    adb  remount
    adb  shell "echo traceGroupsEnable=0x10080 >> /vendor/etc/camera/camxoverridesettings.txt"
    adb  shell "echo traceErrorEnable=TRUE     >> /vendor/etc/camera/camxoverridesettings.txt"
    adb  shell "echo traceOutputEnable=0x10080 >> /vendor/etc/camera/camxoverridesettings.txt"
    adb reboot

##2. 重启后设置开启camx trace 开关
因为 camxoverridesettings 只有重启之后可以生效，所以重启完成后需要开启trace 开关，既可以开始抓取Camera的 Systrace。

 adb shell "echo 1 > d/tracing/events/camera/enable"

二、Camx 调试开关设置懒人脚本

下面脚本主要用来设置Camx debug trace 开关的，内容如下：

#bin/bash

# setting camxoverridesettings prop
funSetCamxoverridesettings(){

    adb  shell "echo traceGroupsEnable=0x10080 >> /vendor/etc/camera/camxoverridesettings.txt"
    adb  shell "echo traceErrorEnable=TRUE     >> /vendor/etc/camera/camxoverridesettings.txt"
    adb  shell "echo traceOutputEnable=0x10080 >> /vendor/etc/camera/camxoverridesettings.txt"
}

# setti