android流媒体之视频流问题

2012-04-28 12:59:30 698 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

视频流媒体加密方案背景： FFmpeg是一个开源免费跨平台的视频和音频流方案，属于自由软件，采用LGPL或GPL许可证（依据你选择的组件）。它提供了录制、转换以及流化音视频的完整解决方案。概述：方案包括视频加密，视频播放，流媒体服务器三大主要功能，主要解决数字版权保护、在线视频点播流媒体服务器架设的问题。提供windows,Ios,android三个版本插件。单机版客户端简单流程图：流媒体阅读详情

请问有谁碰到过这个问题，怎么解决的？请高人解答一下

04-28 04:45:19.088: D/AndroidRuntime(619): Shutting down VM
04-28 04:45:19.088: W/dalvikvm(619): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-28 04:45:19.094: E/AndroidRuntime(619): FATAL EXCEPTION: main
04-28 04:45:19.094: E/AndroidRuntime(619): java.lang.IllegalStateException: Could not execute method of the activity
04-28 04:45:19.094: E/AndroidRuntime(619): at android.view.View$1.onClick(View.java:2072)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.view.View.performClick(View.java:2408)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.view.View$PerformClick.run(View.java:8816)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.os.Handler.handleCallback(Handler.java:587)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.os.Handler.dispatchMessage(Handler.java:92)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.os.Looper.loop(Looper.java:123)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-28 04:45:19.094: E/AndroidRuntime(619): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 04:45:19.094: E/AndroidRuntime(619): at java.lang.reflect.Method.invoke(Method.java:521)
04-28 04:45:19.094: E/AndroidRuntime(619): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-28 04:45:19.094: E/AndroidRuntime(619): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-28 04:45:19.094: E/AndroidRuntime(619): at dalvik.system.NativeStart.main(Native Method)
04-28 04:45:19.094: E/AndroidRuntime(619): Caused by: java.lang.reflect.InvocationTargetException
04-28 04:45:19.094: E/AndroidRuntime(619): at com.bangda.mp4test.OnLineMp4TestActivity.play(OnLineMp4TestActivity.java:41)
04-28 04:45:19.094: E/AndroidRuntime(619): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 04:45:19.094: E/AndroidRuntime(619): at java.lang.reflect.Method.invoke(Method.java:521)
04-28 04:45:19.094: E/AndroidRuntime(619): at android.view.View$1.onClick(View.java:2067)
04-28 04:45:19.094: E/AndroidRuntime(619): ... 11 more
04-28 04:45:19.094: E/AndroidRuntime(619): Caused by: java.lang.IllegalArgumentException
04-28 04:45:19.094: E/AndroidRuntime(619): at android.media.MediaPlayer.setDataSource(Native Method)
04-28 04:45:19.094: E/AndroidRuntime(619): ... 15 more

04-28 04:52:05.354: E/MediaPlayer(652): error (1, -2147483648)
04-28 04:52:05.354: D/AndroidRuntime(652): Shutting down VM
04-28 04:52:05.354: W/dalvikvm(652): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-28 04:52:05.365: E/AndroidRuntime(652): FATAL EXCEPTION: main
04-28 04:52:05.365: E/AndroidRuntime(652): java.lang.IllegalStateException: Could not execute method of the activity
04-28 04:52:05.365: E/AndroidRuntime(652): at android.view.View$1.onClick(View.java:2072)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.view.View.performClick(View.java:2408)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.view.View$PerformClick.run(View.java:8816)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.os.Handler.handleCallback(Handler.java:587)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.os.Handler.dispatchMessage(Handler.java:92)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.os.Looper.loop(Looper.java:123)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-28 04:52:05.365: E/AndroidRuntime(652): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 04:52:05.365: E/AndroidRuntime(652): at java.lang.reflect.Method.invoke(Method.java:521)
04-28 04:52:05.365: E/AndroidRuntime(652): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-28 04:52:05.365: E/AndroidRuntime(652): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-28 04:52:05.365: E/AndroidRuntime(652): at dalvik.system.NativeStart.main(Native Method)
04-28 04:52:05.365: E/AndroidRuntime(652): Caused by: java.lang.reflect.InvocationTargetException
04-28 04:52:05.365: E/AndroidRuntime(652): at com.bangda.mp4test.OnLineMp4TestActivity.play(OnLineMp4TestActivity.java:48)
04-28 04:52:05.365: E/AndroidRuntime(652): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 04:52:05.365: E/AndroidRuntime(652): at java.lang.reflect.Method.invoke(Method.java:521)
04-28 04:52:05.365: E/AndroidRuntime(652): at android.view.View$1.onClick(View.java:2067)
04-28 04:52:05.365: E/AndroidRuntime(652): ... 11 more
04-28 04:52:05.365: E/AndroidRuntime(652): Caused by: java.io.IOException: Prepare failed.: status=0x1
04-28 04:52:05.365: E/AndroidRuntime(652): at android.media.MediaPlayer.prepare(Native Method)
04-28 04:52:05.365: E/AndroidRuntime(652): ... 15 more

...全文

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lichong951

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lichong951 2012-04-28

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搞了好几天都不能解决,我把源码发出来大家看看，这个异常怎么解决

代码如下：
import java.io.IOException;
import java.net.UnknownHostException;
import android.app.Activity;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Environment;
import android.view.SurfaceHolder;
import android.view.View;
public class OnLineMp4TestActivity extends Activity implements
SurfaceHolder.Callback{
android.media.MediaPlayer player;
android.view.SurfaceView surfaceView;
android.view.SurfaceHolder surfaceholder;
String strFilePath = "";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

surfaceView = (android.view.SurfaceView) findViewById(R.id.surfaceview);
surfaceholder = surfaceView.getHolder();
surfaceholder.addCallback(this);
surfaceholder.setFixedSize(176, 144);
surfaceholder.setType(surfaceholder.SURFACE_TYPE_PUSH_BUFFERS);
getWindow().setFormat(PixelFormat.UNKNOWN);

}
public void play(View view) throws IllegalArgumentException, IllegalStateException, IOException, InterruptedException {
System.out.println("play");

addMovie();

player = new android.media.MediaPlayer();
player.setDataSource(saveFile);
player.setAudioStreamType(android.media.AudioManager.STREAM_MUSIC);
player.setScreenOnWhilePlaying(true);

player.setDisplay(surfaceholder);
player.prepareAsync();
player.start();
}
java.net.Socket socket;
String saveFile;
java.io.DataInputStream din;
java.io.DataOutputStream dout;
java.io.File temp;
private void addMovie() throws InterruptedException {
new Thread() {
public void run() {
try {
socket = new java.net.Socket("10.0.2.2", 8888);
if (socket.isConnected()) {
System.out.println("连接成功！");
din = new java.io.DataInputStream(
new java.io.BufferedInputStream(
socket.getInputStream()));
dout = new java.io.DataOutputStream(
new java.io.BufferedOutputStream(
socket.getOutputStream()));

dout.writeUTF("<#Movie#>");
dout.flush();

String msg=din.readUTF();
if(msg.startsWith("<#New_Movie_File#>")){
System.out.println(msg);
msg=msg.substring(18);
String[] sa=msg.split(",");
saveFile =Environment.getExternalStorageDirectory()+ java.io.File.separator
+ sa[0];
System.out.println(saveFile);

java.io.File file = new java.io.File(saveFile);
java.io.FileOutputStream fout = new java.io.FileOutputStream(
file);
java.io.DataOutputStream fdout = new java.io.DataOutputStream(
new java.io.BufferedOutputStream(fout));
byte[] bys = new byte[16];
int fileSize = Integer.valueOf(sa[1]);
System.out.println("UpLoadFileActivity-接收文件的大小："
+ fileSize);
int currSize = 0;
int count = 0;
while (currSize < fileSize && count != -1) {
count = din.read(bys);
if (count > -1) {
fdout.write(bys, 0, count);
fdout.flush();
currSize += count;
//System.out.println("文件当前传送长度："+count);
//System.out.println("文件当前传送总长度："+currSize);
}
}
System.out.println("文件接收完毕！当前接收文件长度：" + currSize);
fdout.close();
dout.writeUTF("<#Success_Music#>");
dout.flush();

}
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}.start();

Thread.sleep(1000);

}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub

}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub

}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub

}
}

lichong951 2012-04-28

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后来出现这个错误提示，我对流媒体没有什么研究，看不懂这个是什么意思，请问能解释一下吗？或者怎么解决这个异常。

04-28 08:38:14.034: E/MediaPlayer(952): start called in state 4
04-28 08:38:14.034: E/MediaPlayer(952): error (-38, 0)
04-28 08:38:14.034: E/MediaPlayer(952): Error (-38,0)
04-28 08:38:14.555: E/MediaPlayer(952): error (1, -2147483648)
04-28 08:38:14.555: E/MediaPlayer(952): Error (1,-2147483648)

thl789 2012-04-28

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要按状态机描述的来写

thl789 2012-04-28

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报的还是很清楚的：MediaPlayer.setDataSource()参数不对，检查一下参数；
还没正确执行setDataSource()进入Initialized状态之前，当然prepare()也是不对的。

另，播放流媒体用prepareAsync()异步方式。

android流媒体之视频流问题

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