■ 安卓在线源码
http://androidxref.com/
https://www.androidos.net.cn/sourcecode

■ Android MediaPlayer 8.0 and 9.0

https://www.cnblogs.com/tocy/p/1-android-nuplayer-arch-intro.html

https://blog.csdn.net/qq_27136111/category_9100942.html

AudioOutput

https://www.2cto.com/kf/201405/302671.html

■ Android 10 音频焦点仲裁策略分析

https://blog.csdn.net/u012773843/article/details/115231843

■ 车载音频

https://source.android.google.cn/devices/automotive/audio?hl=zh-cn

■ 安卓多媒体资料

https://toutiao.io/posts/n7flq1/preview

https://blog.csdn.net/hejjunlin/category_6829137.html

https://blog.csdn.net/keen_zuxwang/article/details/73912707

■ 搭建opengrok

https://blog.csdn.net/jinzhuojun/article/details/53456196

■ 资料

Audio

■ Android 音频系统：从 AudioTrack 到 AudioFlinger
https://blog.csdn.net/zyuanyun/article/details/60890534
■ Android AudioTrack详解
https://www.jianshu.com/p/6d4cee174a27
■ Android Audio:AudioTrack构造函数分析
https://blog.csdn.net/qq_43443900/article/details/103933776
■ 深入剖析Android音频之AudioTrack
https://www.cnblogs.com/mfmdaoyou/p/7348969.html

■ AudioPolicy Service

AndroidO audio系统之AudioPolicyService分析（三）

其中openOutput and openInput 参考 Android 音频系统：从 AudioTrack 到 AudioFlinger 的 “3.3. AudioFlinger 服务接口”

openOutput打开输出流设备

配置文件：

https://blog.csdn.net/ly601579033/article/details/103172056

https://www.cnblogs.com/Peter-Chen/p/3911414.html

http://androidxref.com/8.1.0_r33/xref/frameworks/av/services/audiopolicy/managerdefault/AudioPolicyManager.cpp#3582

智能指针

https://blog.csdn.net/luoshengyang/article/details/6786239

智能指针分别就称为轻量级指针（Light Pointer）、强指针（Strong Pointer）和弱指针（Weak Pointer）。无论是轻量级指针，还是强指针和弱指针，它们的实现框架都是一致的，即由对象本身来提供引用计数器，但是它不会去维护这个引用计数器的值，而是由智能指针来维护。

Android 音频系统

深入理解MediaScanner
https://wiki.jikexueyuan.com/project/deep-android-v1/mediascanner.html

android_9.0 MediaScanner 媒体扫描详解
https://blog.csdn.net/qq_19923217/article/details/88033492

Android MediaScanner 总纲
https://blog.csdn.net/matrix_laboratory/article/details/46680219

Android Media
https://blog.csdn.net/hushui/article/details/82585966

Android多媒体之MediaPlayer框架分析
https://www.jianshu.com/p/72f480d95c8b

Android MediaPlayer
https://www.jianshu.com/p/593b14444e79

AwesomePlayer
http://www.mikewootc.com/wiki/android/mid/mediaplayer_awesome.html

NuPlayer
https://www.cnblogs.com/tocy/p/1-android-nuplayer-arch-intro.html
https://blog.csdn.net/miaomiao12345678/article/details/57415505
https://www.jianshu.com/p/489d1f19b0c8

音频框架：
https://www.jianshu.com/p/9481b1482367
https://www.jianshu.com/p/d19c9e8ceb82

Android系统Audio框架介绍
https://blog.csdn.net/yangwen123/article/details/39502689

Camera架构
https://www.jianshu.com/p/bac0e72351e4

android 使用SAF框架操作外置sd卡
https://blog.csdn.net/hyc1988107/article/details/83825237