Android audio-阿里云

Android平台RTMP推送或GB28181设备接入端如何实现采集audio音量放大？

我们在做Android平台RTMP推送和GB28181设备对接的时候，遇到这样的问题，有的设备，麦克风采集出来的audio，音量过高或过低，特别是有些设备，采集到的麦克风声音过低，导致播放端听不清前端采集的audio，这时候，就需要针对采集到的audio，做...

Android Audio系统笔记

一、Audio框架APP层：音乐播放器，视频播放器。播放器一般使用MediaPlayer，MediaRecorder来进行播放和录音，MediaPlayer可以将音频文件进行解码，得到pcm流，然后使用AudioTrack进行播放。MediaRecorder是类似相反的过程。framework Ja...

开源Android容器化框架Atlas开发者指南

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Android开发之Audio播放：竞争Audio之Audio Focus的应用

Android是多任务系统，Audio系统是竞争资源。Android2.2之前，没有内建的机制来解决多个程序竞争Audio的问题，2.2引入了称作AudioFocus的机制来管理对Audio资源的竞争的管理与协调。本文主要讲解AudioFocus的使用。按照AudioFocus的机制，在使用Aud...

Android2.2、Android2.3 、Android4.0 audio hardware模块分析

Android2.2、Android2.3 、Android4.0 audio hardware模块分析从事Linux开发的工程技术人员都知道，ALSA是Advanced Linux Sound Archite...

android系统中ALSA架构audio -EPIPE错误分析及对策

使用ALSA架构的驱动程序,在实际开发使用过程中,比较常见的错误有-EPIPE，也就是-32？为什么会出现呢？肯定是系统内部不和谐了！EPIPE的错误在播放时出现就是因为驱动buffer没有数据可以丢给codec所致，通俗一点就是上层给下面喂数据的速度慢了，下面...

Android audio codec power consumption

Android audio codec power consumption 一、 Codec状态 1、Off Mode； 2、Normal Operation； 3、Standby。状态...

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