我正在使用 AudioTrack 播放 .wav 文件。我有个问题。我将 setLoopPoints 设置为循环我的 .wav 文件，但它不起作用。
这是我的示例代码。
public class PleaseActivity extends Activity implements Runnable{
AudioTrack audioTrack;
public static final String MEDIA_PATH = Environment.getExternalStorageDirectory().getAbsolutePath()+"/TEST";
/** Called when the activity is first created. */
Button play_button, stop_button;
File file = null;
byte[] byteData = null;
Boolean playing = false;
int bufSize;
AudioTrack myAT = null;
Thread play_thread = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play_button = (Button) findViewById(R.id.btn1);
stop_button = (Button) findViewById(R.id.btn2);
file = new File(MEDIA_PATH+"/untitled1.wav");
byteData = new byte[(int) file.length()];
FileInputStream in = null;
try {
in = new FileInputStream(file);
in.read(byteData);
in.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
initialize();
play_button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
play_thread.start();
}
});
//
stop_button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//
if (myAT.getPlayState() == AudioTrack.PLAYSTATE_PLAYING) {
myAT.stop();
play_thread = null;
initialize();
}
}
});
}
void initialize() {
bufSize = android.media.AudioTrack.getMinBufferSize(44100,
AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT);
myAT = new AudioTrack(AudioManager.STREAM_MUSIC,
44100, AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT, bufSize,
AudioTrack.MODE_STREAM);
play_thread = new Thread(this);
}
public void run() {
if (myAT != null) {
myAT.play();
myAT.setLoopPoints(0, byteData.length, 2);
myAT.write(byteData, 0, byteData.length);
}
}
}
我可以很好地播放我的波形文件，但是 setLoopPoints 不起作用！任何人都可以帮助我..
我解决了这样的循环问题。我还有一个问题。每当我将数据写入音轨时，我的意思是每当重复音轨时，都会在第一部分添加一些诸如“滴答声”之类的噪音。我不知道如何消除这种噪音..有人知道如何解决吗？
class DLThread extends Thread
{
public void run()
{
while(!DLThread.interrupted())
{
if (myAT != null) {
//
myAT.play();
myAT.flush();
myAT.write(byteData, 0, byteData.length);
}
}
}
}