如何通过mpg123库解码从mp3到pcm的声音

Question

int minSize =AudioTrack.getMinBufferSize( 45100, AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT );        
			track = new AudioTrack( AudioManager.STREAM_MUSIC,45100 , 
					AudioFormat.CHANNEL_OUT_STEREO, AudioFormat.ENCODING_PCM_16BIT, 
					minSize, AudioTrack.MODE_STREAM);		
			track.setStereoVolume(1f,1f);
			while(true)
			{
				Log.e(""," sizewe are using for track buffer is "+minSize);
				int i = 0;                                                          //  Read the file into the "music" array
				music=new short[4188];

				while (dis.available() > 0)
				{
					music[i] =  dis.readShort();
					i++;
					if(i==4188)
						break;
				}
				Log.e("","music lengh= "+music.length+"  and dis.available="+dis.available());
				track.play();    
				track.write(music,0, music.length);
				track.flush();
				track.stop();
			}

有人告诉我当我们使用bytebuffer在audiotrack中播放大型mp3文件时如何解码声音，我想在播放歌曲时实时解码它...这里我从.aiff文件获取歌曲这是一个pcm格式 第一：我想通过audiotrack课程播放mp3文件 第二：.wav也是一个pcm文件，但它没有播放。

thanks in advance