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Official website http://xmlsoft.org/ Source download http://xmlsoft.org/sources/ Version I use libxml2-2.9.8.tar.gz Download address: https://download.csdn.net/download/andylauren/10669589 Compile source code 1. Decompress the source package rt@ubuntu:~/xml2$ tar xvf libxml2-2.9.8.tar.gz rt@ubuntu:~/xml2$ cd libxml2-2. ...

Preface Before analyzing audio_policy_configuration.xml, familiarize yourself with the start-up process of audiopolicy. When booting, audioservice will start through init.rc, audioservice will start AudioPolicy Service, and AudioPolicy Service will create AudioPolicy Manager, so AudioPolicy Manager will be initialized. Interested can see this b ...