Android 2.2 MediaPlayer 与一个 SHOUTcast URL 一起工作正常，但与另一个不兼容 [英] Android 2.2 MediaPlayer is working fine with one SHOUTcast URL but not with the other one

问题描述

请查看我用于流式传输 Shoutcast 流的代码，它适用于一个 URL，但不适用于另一个.

Please see the code i am using for streaming shoutcast stream, it works with one URL but NOT with the other one.

这个有效:

Uri myUri = Uri.parse("http://fr3.ah.fm:9000/");

但不是这个:

Uri myUri =  Uri.parse("http://someOtherURL");

SimpleMusicStream.java

SimpleMusicStream.java

import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class SimpleMusicStream extends Activity implements
  MediaPlayer.OnCompletionListener, MediaPlayer.OnPreparedListener,
  MediaPlayer.OnErrorListener, MediaPlayer.OnBufferingUpdateListener {

 private String TAG = getClass().getSimpleName();
 private MediaPlayer mp = null;

 private Button play;
 private Button pause;
 private Button stop;

 @Override
 public void onCreate(Bundle icicle) {
  super.onCreate(icicle);
  setContentView(R.layout.main);

  play = (Button) findViewById(R.id.play);
  pause = (Button) findViewById(R.id.pause);
  stop = (Button) findViewById(R.id.stop);

  play.setOnClickListener(new View.OnClickListener() {
   public void onClick(View view) {
    play();
   }
  });

  pause.setOnClickListener(new View.OnClickListener() {
   public void onClick(View view) {
    pause();
   }
  });

  stop.setOnClickListener(new View.OnClickListener() {
   public void onClick(View view) {
    stop();
   }
  });
 }

 private void play() {
  Uri myUri = Uri.parse("http://fr3.ah.fm:9000/");
  try {
   if (mp == null) {
    this.mp = new MediaPlayer();
   } else {
    mp.stop();
    mp.reset();
   }
   mp.setDataSource(this, myUri); // Go to Initialized state
   mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
   mp.setOnPreparedListener(this);
   mp.setOnBufferingUpdateListener(this);

   mp.setOnErrorListener(this);
   mp.prepareAsync();

   Log.d(TAG, "LoadClip Done");
  } catch (Throwable t) {
   Log.d(TAG, t.toString());
  }
 }

 @Override
 public void onPrepared(MediaPlayer mp) {
  Log.d(TAG, "Stream is prepared");
  mp.start();
 }

 private void pause() {
  mp.pause();
 }

 private void stop() {
  mp.stop();

 }

 @Override
 public void onDestroy() {
  super.onDestroy();
  stop();

 }

 public void onCompletion(MediaPlayer mp) {
  stop();
 }

 public boolean onError(MediaPlayer mp, int what, int extra) {
  StringBuilder sb = new StringBuilder();
  sb.append("Media Player Error: ");
  switch (what) {
  case MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK:
   sb.append("Not Valid for Progressive Playback");
   break;
  case MediaPlayer.MEDIA_ERROR_SERVER_DIED:
   sb.append("Server Died");
   break;
  case MediaPlayer.MEDIA_ERROR_UNKNOWN:
   sb.append("Unknown");
   break;
  default:
   sb.append(" Non standard (");
   sb.append(what);
   sb.append(")");
  }
  sb.append(" (" + what + ") ");
  sb.append(extra);
  Log.e(TAG, sb.toString());
  return true;
 }

 public void onBufferingUpdate(MediaPlayer mp, int percent) {
  Log.d(TAG, "PlayerService onBufferingUpdate : " + percent + "%");
 }

    }

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
 <Button
  android:text="Play"
  android:id="@+id/play"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"></Button>
 <Button
  android:text="Pause"
  android:id="@+id/pause"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"></Button>
 <Button
  android:text="Stop"
  android:id="@+id/stop"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"></Button>
</LinearLayout>

Log-cat 显示错误:

NuHTTPDataSource(33): Server did not give us the content length!

Media Player Error: Unknown (1) -2147483648
Media Player Error: Unknown (1) -1002

有人可以帮我解决吗?

只是想与大家分享，我们的当前代码适用于 Android 2.1 &次要版本，但不适用于 Android 2.2 或更高版本.

Just to share with you people, that our current code works with Android 2.1 & minor versions, but not works with Android 2.2 or higher.

谢谢

推荐答案

原生支持从 Android 2.2 开始的 Shoutcast mp3 流.

Shoutcast mp3 streaming from Android 2.2 onwards is supported natively .

在 2.2 以下 Android 操作系统无法在不使用流端代理或设备上的流代理类来捕获流并将其传递给音频播放器的情况下原生播放喊叫流，就像 NPR 确实如此.

Below 2.2 the Android OS cannot play shoutcast streams natively without using a proxy on the stream end or a stream proxy class on the device to capture the stream and pass it to the audioplayer just like NPR does.

不直接支持音频/AACP 流.为此，您可以使用 ffmpeg、opencore 或 faad2 库将其解码为 PCM 并使用 audiotrack 播放.参考

audio/aacp streaming is not supported directly . For this you can use ffmpeg, opencore or faad2 library to decode it into PCM and play using audiotrack .Reference

这篇关于Android 2.2 MediaPlayer 与一个 SHOUTcast URL 一起工作正常，但与另一个不兼容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！