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Android-Audio

1.CarAudioTrack Demo,用来演示AudioTrack的使用方法,主要实现了用AudioTrack播放pcm或者wav格式的音频文件。

Android P默认音量值修改:

1.修改frameworks\base\media\java\android\media\AudioSystem.java中的DEFAULT_STREAM_VOLUME;

2.参照frameworks\base\services\core\java\com\android\server\audio\AudioService.java中的MAX_STREAM_VOLUME;

3.修改build\tools\buildinfo.sh,增加: echo "ro.config.media_vol_default=15" echo "ro.config.alarm_vol_default=7" echo "ro.config.system_vol_default=15"

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