使用Android MediaPlayer进行无间隙播放 [英] Gapless Playback with android MediaPlayer

问题描述

我正在尝试不间断地连续播放音频.我已经尝试过了，

I'm trying to repeatedly play a audio continuously, without any gap. I've tried,

mediaplayer.setLooping(true);

但是它在重复时间之间存在间隔.并尝试了这一点，

But it gives a gap between repeat time. And tried this,

mediaplayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener()  {
    @Override
    public void onCompletion(MediaPlayer mp)
    {
        mediaplayer.start();
    }
});

它也提供了一个空白.我尝试了不同的音频格式.但是，这两种方法都不适合我. android中还有其他方法吗?

It gives a gap also. I've tried with different audio format. But neither way worked for me. Is there any other way in android?

推荐答案

回放完成后，播放器引擎将检查所有轨道是否都已完成，一旦完成，它将检查looping标志.根据looping标志，从seek到0秒.作为搜索的一部分，播放器引擎将从特定位置读取数据并开始播放.

When a playback finishes, the player engine would check if all tracks are completed and once done, it will check for the looping flag. Based on the looping flag, a seek to 0 seconds. As part of the seek, the player engine will read the data from the specific position and start the playback.

延迟可能是由于seek实现以及存储介质(如sdcard)引入的延迟，除了重新初始化所有轨道并重新启动它们之外.因此，在玩家返回到起始位置时存在一定的延迟.

The delay may be due to the seek implementation along with the delay introduced by the storage medium like sdcard apart from re-initializing all tracks and restarting them. Hence, there is definite delay by the time the player reverts back to the starting position.

底层循环实现可在此函数AwesomePlayer::onStreamDone中找到，如下所示:

The underlying looping implementation can be found in this function AwesomePlayer::onStreamDone as shown here: http://androidxref.com/4.2.2_r1/xref/frameworks/av/media/libstagefright/AwesomePlayer.cpp#834

要实现真正的gapless playback，您还可以考虑 setNextMediaPlayer() 功能.

To implement a true gapless playback, you could also consider the setNextMediaPlayer() feature.

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