黑莓上播放sourcestream，使用pcm格式为什么没有声音
想使用sourcestream来播放：在创建player的时候使用了“audio/x-pcm”，“audio/pcm”在运行的时候会出异常，所以才使用了x-。
try
{
player = Manager.createPlayer(new DataSource(null)
{
SourceStream[] mStream = {mInput};
public void connect() throws IOException
{
Log.d("read", "createPlayer: connect data source");
// ssLogger.info("connect data source");
}
public void disconnect()
{
Log.d("read", "createPlayer: disconnect data source");
// sLogger.info("disconnect data source");
}
public String getContentType()
{
Log.d("read", "createPlayer: getContentType");
return contentType;
// return "audio/basic;codec=pcm";
}
public SourceStream[] getStreams()
{
Log.d("read", "createPlayer: getStreams");
return mStream;
}
public void start() throws IOException
{
Log.d("read", "createPlayer: start data source");
// sLogger.info("start data source");
}
public void stop() throws IOException
{
Log.d("read", "createPlayer: stop data source");
// sLogger.info("start data source");
}
public Control getControl(String controlType)
{
Log.d("read", "createPlayer: getControl");
return null;
}
public Control[] getControls()
{
Log.d("read", "createPlayer: getControls");
return null;
}
});
player.addPlayerListener(this);
player.realize();
AudioPathControl lPathCtr = (AudioPathControl) player
.getControl("net.rim.device.api.media.control.AudioPathControl");
lPathCtr.setAudioPath(AudioPathControl.AUDIO_PATH_HANDSET);
player.prefetch();
player.start();
}
catch (MediaException e)
{
Log.d("read", "MediaException" + e.toString());
e.printStackTrace();
}
catch (IOException e)
{
Log.d("read", "IOException" + e.toString());
e.printStackTrace();
}
Log.d("read", "player ready");
}
SourceStream是这么定义 的
private SourceStream mInput = new SourceStream()
{
long mDebugSeq = 0;
private int mAvailableSize = 0;
private int mPacketSize;
private ContentDescriptor mContentDescriptor = new ContentDescriptor(
"audio/pcm");
public int read(byte[] b, int offset, int length) throws IOException
{
//往b中复制数据
}
public ContentDescriptor getContentDescriptor()
{
Log.d("read", "getContentDescriptor");
return mContentDescriptor;
}
public long getContentLength()
{
Log.d("read", "getContentLength");
return playByte.length;
}
public int getSeekType()
{
Log.d("read", "getSeekType");
return SourceStream.NOT_SEEKABLE;
}
public int getTransferSize()
{
Log.d("read", "SourceStream getTransferSize()");
return 58000;
}
public long seek(long where) throws IOException
{
Log.d("read", "seek");
return where;
}
public long tell()
{
Log.d("read", "seek");
return startTime == 0 ? 0
: (System.currentTimeMillis() - startTime);
}
public Control getControl(String controlType)
{
Log.d("read", "getControl");
return null;
}
public Control[] getControls()
{
Log.d("read", "getControls");
return null;
}
};
在运行的时候，没声音。请教如何解决。
这里的playByte是byte[]，是我之前录下来的pcm格式的声音，已经测试过直接将playByte播放出来是可以有声音的。
--------------------编程问答-------------------- 楼猪，研究出来没，俺也在搞这个 --------------------编程问答--------------------
补充：移动开发 , BlackBerry
