来自 AudioTrack 流的通知消息
我已经实现了一个写入 AudioTrack 对象的 PCM 解码器。
一切看起来都很棒，但是，当最后写入的块停止播放时，我需要从 AudioTrack 对象获得某种通知。
我注意到有一些回调方法，例如 setNotificationMarkerPosition， 但是，我找不到任何有关如何使用它们的详细文档。
提前致谢！
I've implemented a PCM decoder that writes to an AudioTrack object.
Everything seems great, however, I need to get some sort of notification from the AudioTrack object when the last written chunk has stopped playing.
I've noticed that there are callback methods such as setNotificationMarkerPosition, however, I couldn't find any extensive documentation as how to use them.
Thanks in advance!
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要获取
AudioTrack回调，您可以设置标记回调或使用定期回调。我看过有关标记问题的报告，因此您可能想同时尝试这两种方法。对于标记回调，首先使用您想要调用的任何帧号调用
setNotificationMarkerPosition。对于定期回调，请改为调用
setPositionNotificationPeriod，它将每 x 帧调用一次。无论哪种方式，您都需要调用
setPlaybackPositionUpdateListener来注册回调。这将调用两个方法，如果到达标记，则调用onMarkerReached，或者每隔设定数量的帧调用onPeriodicNotification。您可以选择使用其中之一，或两者都使用。两个回调都引用您用来设置它的AudioTrack实例。默认情况下，它将在创建
AudioTrack实例的同一线程中回调。或者，您可以在注册回调时传递处理程序以将其发送到另一个线程。To get an
AudioTrackcallback, you could set a marker callback or use the periodic callback. I've seen reports of problems with the marker, so you may want to try both.For the marker callback, first call
setNotificationMarkerPositionwith whatever frame number you want a call for.For a periodic callback, instead call
setPositionNotificationPeriodand it will call every x frames.Either way, you'll need to call
setPlaybackPositionUpdateListenerto register the callback. This will call two methods,onMarkerReachedif it reaches a marker, oronPeriodicNotificationevery set number of frames. You can choose to use one or the other, or both. Both callbacks refer the instance ofAudioTrackyou used to set it.By default, it will call back in the same thread the
AudioTrackinstance was created. Alternatively, you can pass a handler when you register the callbacks to send it to another thread.