GLPlayer是一个在Android平台上工作的音频/视频播放器。"GL"两个字母取自"OpenGL"，表明这是利用OpenGL的相应API进行视频渲染的媒体播放器。它的主要功能实现依赖于Android平台内的基础Media组件：解封装媒体文件基于MediaExtractor，音频帧/视频帧基于MediaCodec进行硬解码，视频渲染基于OpenGL ES，音频渲染基于AudioTrack。
GLPlayer的API设计相当程度上参考了ExoPlayer，对于有音视频播放需求的开发者，强烈建议使用ExoPlayer而不是GLPlayer。GLPlayer目前不能保证实际应用环境中的稳定性，也缺少ExoPlayer所提供的许多高级功能。
在settings.gradle添加：
dependencyResolutionManagement {
...
repositories {
maven { url 'https://jitpack.io' }
...
}
}然后，在对应模块内的的build.gradle添加：
dependencies {
implementation 'com.github.usagisang:GLPlayer:0.1.0'
}在settings.gradle.kts添加：
dependencyResolutionManagement {
...
repositories {
...
maven(url = "https://jitpack.io")
}
}然后，在对应模块内的的build.gradle.kts添加：
dependencies {
implementation("com.github.usagisang:GLPlayer:0.1.0")
}快速使用指南（Kotlin）：
// 构造Player实例
val player: Player = GLPlayerBuilder(context).setPlayAfterLoading(true).build()
// PlayerView是GLPlayer提供的视频渲染顶层View
val playerView = findViewById<PlayerView>(R.id.player_view)
// 绑定Lifecycle
playerView.bindLifecycle(lifecycle)
// 将Player绑定到PlayerView以进行视频渲染
playerView.setPlayer(player)
// 设置需要加载的媒体，这里采用网络url
player.setMediaItem(MediaItem.fromUrl(videoUrl))
// 开始准备媒体资源
player.prepare()快速使用指南（Java）：
private Player player;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
// ....
String mediaUrl = "...";
// 构造Player实例
player = new GLPlayerBuilder(this).setPlayAfterLoading(true).build();
// PlayerView是GLPlayer提供的视频渲染顶层View
PlayerView playerView = findViewById(R.id.player_view);
// 绑定Lifecycle
playerView.bindLifecycle(getLifecycle());
// 将Player绑定到PlayerView以进行视频渲染
playerView.setPlayer(player);
// 设置需要加载的媒体
player.setMediaItem(MediaItem.Companion.fromUrl(mediaUrl));
// 开始准备媒体资源
player.prepare();
}GLPlayer使用OpenGL ES进行视频渲染，当PlayerView离开屏幕（例如，回到桌面或者锁屏），OpenGL所依赖的EGL Display等资源会被自动释放，这时如果仍试图更新纹理就会抛出异常，会导致后续PlayerView无法再次渲染视频。PlayerView自动处理了锁屏事件，但不绑定Lifecycle则无法监听与生命周期相关的事件。因此，如果希望播放器进入后台时也继续播放音频，并能够在应用回到前台后恢复视频渲染，建议为PlayerView绑定Lifecycle。
如果确认播放器不需要在后台播放视频的音频轨道，那么，只要在相应事件（onPause等）发生后调用player.pause()来停止播放，也可以避免EGL Display被释放的异常，这种情况下不需要为PlayerView绑定Lifecycle。
如果只打算播放纯音频，那么不需要使用PlayerView，安全忽略绑定Lifecycle的要求即可。
MIT License
Copyright (c) 2022 usagisang
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