Я пытаюсь создать аудиоплеер со встроенным JSlider, который обновляет интерфейс каждые микросекунды.JSlider issue audio player
Для того, чтобы сделать это, я использую следующее:
sliderTime.setMinimum(0);
sliderTime.setMaximum((int) audioClip.getMicrosecondPosition(););
У меня есть ощущение, что это не лучшая реализация там (любые предложения по улучшению его высоко ценится)
По Кстати, проблема, с которой я сталкиваюсь, заключается в том, что в течение первой секунды JSlider не обновляется.
Вы можете найти MCVE ниже: Он играет только WAV несжатых файлов
Главных
public class Main
{
public static void main(final String[] args)
{
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
JFrame f = new JFrame();
PlayerView pw = new PlayerView();
Border border = new EmptyBorder(15,15,15,15);
pw.setBorder(border);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().setLayout(new BorderLayout());
f.getContentPane().add(pw, BorderLayout.CENTER);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
});
}
}
AudioPlayer
public class AudioPlayer implements LineListener
{
private SimpleDateFormat dateFormater = new SimpleDateFormat("HH:mm:ss.SSS");
private TimeZone timeZone = Calendar.getInstance().getTimeZone();
public static final int REWIND_IN_MICROSECONDS = 3000000;
public static final int FORWARD_IN_MICROSECONDS = 3000000;
private boolean playCompleted;
private boolean isStopped;
private boolean isPaused;
private boolean isRewinded;
private boolean isForwarded;
private Clip audioClip;
public Clip getAudioClip()
{
return audioClip;
}
public void load(String audioFilePath) throws UnsupportedAudioFileException, IOException, LineUnavailableException
{
File encodedFile = new File(audioFilePath);
AudioInputStream pcmStream = AudioSystem.getAudioInputStream(encodedFile);
AudioFormat format =pcmStream.getFormat();
DataLine.Info info = new DataLine.Info(Clip.class, format);
audioClip = (Clip) AudioSystem.getLine(info);
audioClip.addLineListener(this);
audioClip.open(pcmStream);
}
public long getClipMicroSecondLength()
{
return audioClip.getMicrosecondLength();
}
public long getClipMicroSecondPosition()
{
return audioClip.getMicrosecondPosition();
}
public String getClipLengthString()
{
long yourmilliseconds = audioClip.getMicrosecondLength()/1_000;
Date resultdate = new Date(yourmilliseconds);
dateFormater.setTimeZone(TimeZone.getTimeZone(timeZone.getDisplayName(false, TimeZone.SHORT)));
return dateFormater.format(resultdate);
}
public void play() throws IOException
{
audioClip.start();
playCompleted = false;
isStopped = false;
while (!playCompleted)
{
try
{
Thread.sleep(30);
}
catch (InterruptedException ex)
{
if (isStopped)
{
audioClip.stop();
break;
}
else if (isPaused)
{
audioClip.stop();
}
else if (isRewinded)
{
if(audioClip.getMicrosecondPosition() <= REWIND_IN_MICROSECONDS)
{
audioClip.setMicrosecondPosition(0);
isRewinded =false;
}
else
{
audioClip.setMicrosecondPosition(audioClip.getMicrosecondPosition() - REWIND_IN_MICROSECONDS);
isRewinded =false;
}
}
else if (isForwarded)
{
if((audioClip.getMicrosecondLength() - audioClip.getMicrosecondPosition()) >= FORWARD_IN_MICROSECONDS)
{
audioClip.setMicrosecondPosition(audioClip.getMicrosecondPosition() + FORWARD_IN_MICROSECONDS);
isForwarded =false;
}
else
{
audioClip.stop();
isForwarded =false;
}
}
else
{
audioClip.start();
}
}
}
audioClip.close();
}
public void stop()
{
isStopped = true;
}
public void pause()
{
isPaused = true;
}
public void resume()
{
isPaused = false;
}
public void rewind()
{
isRewinded = true;
}
public void forward()
{
isForwarded = true;
}
@Override
public void update(LineEvent event)
{
Type type = event.getType();
if (type == Type.STOP)
{
if (isStopped || !isPaused)
{
playCompleted = true;
}
}
}
}
PlayingTimer
public class PlayingTimer extends Thread
{
private SimpleDateFormat dateFormater = new SimpleDateFormat("HH:mm:ss.SSS");
private TimeZone timeZone = Calendar.getInstance().getTimeZone();
private boolean isRunning = false;
private boolean isPause = false;
private boolean isReset = false;
private boolean isRewinded = false;
private boolean isForwarded = false;
private long startTime;
private long pauseTime;
private long rewindTime;
private long forwardTime;
private JLabel labelRecordTime;
private JSlider slider;
private Clip audioClip;
public void setAudioClip(Clip audioClip)
{
this.audioClip = audioClip;
}
public PlayingTimer(JLabel labelRecordTime, JSlider slider)
{
this.labelRecordTime = labelRecordTime;
this.slider = slider;
dateFormater.setTimeZone(TimeZone.getTimeZone(timeZone.getDisplayName(false, TimeZone.SHORT)));
}
public void run()
{
isRunning = true;
startTime = System.currentTimeMillis();
while (isRunning)
{
try
{
Thread.sleep(30);
if (!isPause)
{
if (audioClip != null && audioClip.isRunning())
{
long currentMicros = audioClip.getMicrosecondPosition();
// Compute the progress as a value between 0.0 and 1.0
double progress =
(double)currentMicros/audioClip.getMicrosecondLength();
// Compute the slider value to indicate the progress
final int sliderValue = (int)(progress * slider.getMaximum());
// Update the slider with the new value, on the Event Dispatch Thread
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
labelRecordTime.setText(toTimeString());
slider.setValue(sliderValue);
}
});
}
}
else
{
pauseTime += 30;
}
}
catch (InterruptedException ex)
{
if (isReset)
{
slider.setValue(0);
labelRecordTime.setText("00:00:00.000");
isRunning = false;
break;
}
if (isRewinded)
{
if(audioClip.getMicrosecondPosition() <= AudioPlayer.REWIND_IN_MICROSECONDS)
{
//go back to start
rewindTime += audioClip.getMicrosecondPosition()/1_000;
}
else
{
rewindTime += 3000;
}
isRewinded =false;
}
if (isForwarded)
{
if((audioClip.getMicrosecondLength()- audioClip.getMicrosecondPosition()) <= AudioPlayer.FORWARD_IN_MICROSECONDS)
{
forwardTime -= (audioClip.getMicrosecondLength()- audioClip.getMicrosecondPosition())/1_000;
}
else
{
forwardTime -= 3000;
}
isForwarded=false;
}
}
}
}
public void reset()
{
isReset = true;
isRunning = false;
}
public void rewind()
{
isRewinded = true;
}
public void forward()
{
isForwarded = true;
}
public void pauseTimer()
{
isPause = true;
}
public void resumeTimer()
{
isPause = false;
}
private String toTimeString()
{
long now = System.currentTimeMillis();
Date resultdate = new Date(now - startTime - pauseTime - rewindTime - forwardTime);
return dateFormater.format(resultdate);
}
}
PlayerView
public class PlayerView extends JPanel implements ActionListener
{
private static final int BUTTON_HEIGTH =60;
private static final int BUTTON_WIDTH =120;
private AudioPlayer player = new AudioPlayer();
private Thread playbackThread;
private PlayingTimer timer;
private boolean isPlaying = false;
private boolean isPause = false;
private String audioFilePath;
private String lastOpenPath;
private JLabel labelFileName;
private JLabel labelTimeCounter;
private JLabel labelDuration;
private JButton buttonOpen;
private JButton buttonPlay;
private JButton buttonPause;
private JButton buttonRewind;
private JButton buttonForward;
private JSlider sliderTime;
private Dimension buttonDimension = new Dimension(BUTTON_WIDTH,BUTTON_HEIGTH);
public PlayerView()
{
setLayout(new BorderLayout());
labelFileName = new JLabel("File Loaded:");
labelTimeCounter = new JLabel("00:00:00.000");
labelDuration = new JLabel("00:00:00.000");
sliderTime = new JSlider(0, 1000, 0);;
sliderTime.setValue(0);
sliderTime.setEnabled(false);
buttonOpen = new JButton("Open");
buttonOpen.setPreferredSize(buttonDimension);
buttonOpen.addActionListener(this);
buttonPlay = new JButton("Play");
buttonPlay.setEnabled(false);
buttonPlay.setPreferredSize(buttonDimension);
buttonPlay.addActionListener(this);
buttonPause = new JButton("Pause");
buttonPause.setEnabled(false);
buttonPause.setPreferredSize(buttonDimension);
buttonPause.addActionListener(this);
buttonRewind = new JButton("Rewind");
buttonRewind.setEnabled(false);
buttonRewind.setPreferredSize(buttonDimension);
buttonRewind.addActionListener(this);
buttonForward= new JButton("Forward");
buttonForward.setEnabled(false);
buttonForward.setPreferredSize(buttonDimension);
buttonForward.addActionListener(this);
init();
}
public void enableButtonPlay()
{
buttonPlay.setEnabled(true);
}
@Override
public void actionPerformed(ActionEvent event)
{
Object source = event.getSource();
if (source instanceof JButton)
{
JButton button = (JButton) source;
if (button == buttonOpen)
{
openFile();
}
else if (button == buttonPlay)
{
if (!isPlaying)
{
playBack();
}
else
{
stopPlaying();
}
}
else if (button == buttonPause)
{
if (!isPause)
{
pausePlaying();
}
else
{
resumePlaying();
}
}
else if (button == buttonRewind)
{
if (!isPause)
{
rewind();
}
}
else if (button == buttonForward)
{
if (!isPause)
{
forward();
}
}
}
}
public void openFile(String path)
{
audioFilePath = path ;
if (isPlaying || isPause)
{
stopPlaying();
while (player.getAudioClip().isRunning())
{
try
{
Thread.sleep(100);
}
catch (InterruptedException ex)
{
ex.printStackTrace();
}
}
}
playBack();
}
private void openFile()
{
JFileChooser fileChooser = null;
if (lastOpenPath != null && !lastOpenPath.equals(""))
{
fileChooser = new JFileChooser(lastOpenPath);
}
else
{
fileChooser = new JFileChooser();
}
FileFilter wavFilter = new FileFilter()
{
@Override
public String getDescription()
{
return "Sound file (*.WAV)";
}
@Override
public boolean accept(File file)
{
if (file.isDirectory())
{
return true;
}
else
{
return file.getName().toLowerCase().endsWith(".wav");
}
}
};
fileChooser.setFileFilter(wavFilter);
fileChooser.setDialogTitle("Open Audio File");
fileChooser.setAcceptAllFileFilterUsed(false);
int userChoice = fileChooser.showOpenDialog(this);
if (userChoice == JFileChooser.APPROVE_OPTION)
{
audioFilePath = fileChooser.getSelectedFile().getAbsolutePath();
lastOpenPath = fileChooser.getSelectedFile().getParent();
if (isPlaying || isPause)
{
stopPlaying();
while (player.getAudioClip().isRunning())
{
try
{
Thread.sleep(100);
}
catch (InterruptedException ex)
{
ex.printStackTrace();
}
}
}
playBack();
}
}
private void playBack()
{
timer = new PlayingTimer(labelTimeCounter, sliderTime);
timer.start();
isPlaying = true;
playbackThread = new Thread(new Runnable()
{
@Override
public void run()
{
try
{
buttonPlay.setText("Stop");
buttonPlay.setEnabled(true);
buttonRewind.setEnabled(true);
buttonForward.setEnabled(true);
buttonPause.setText("Pause");
buttonPause.setEnabled(true);
player.load(audioFilePath);
timer.setAudioClip(player.getAudioClip());
labelFileName.setText("Playing File: " + ((File)new File(audioFilePath)).getName());
sliderTime.setMinimum(0);
sliderTime.setMaximum((int)player.getClipMicroSecondLength());
labelDuration.setText(player.getClipLengthString());
player.play();
labelFileName.setText("File Loaded: " + ((File)new File(audioFilePath)).getName());
resetControls();
}
catch (UnsupportedAudioFileException ex)
{
JOptionPane.showMessageDialog(
PlayerView.this,
"The audio format is unsupported!",
"Error",
JOptionPane.ERROR_MESSAGE);
resetControls();
}
catch (LineUnavailableException ex)
{
JOptionPane.showMessageDialog(
PlayerView.this,
"Could not play the audio file because line is unavailable!",
"Error",
JOptionPane.ERROR_MESSAGE);
resetControls();
}
catch (IOException ex)
{
JOptionPane.showMessageDialog(
PlayerView.this,
"I/O error while playing the audio file!",
"Error",
JOptionPane.ERROR_MESSAGE);
resetControls();
}
}
});
playbackThread.start();
}
private void stopPlaying()
{
isPause = false;
buttonPause.setText(" Pause ");
buttonPause.setEnabled(false);
buttonRewind.setEnabled(false);
buttonForward.setEnabled(false);
timer.reset();
timer.interrupt();
player.stop();
playbackThread.interrupt();
}
private void pausePlaying()
{
labelFileName.setText("File Loaded: " + ((File)new File(audioFilePath)).getName());
buttonRewind.setEnabled(false);
buttonForward.setEnabled(false);
buttonPause.setText("Resume");
isPause = true;
player.pause();
timer.pauseTimer();
playbackThread.interrupt();
}
private void resumePlaying()
{
labelFileName.setText("Playing File: " + ((File)new File(audioFilePath)).getName());
buttonPause.setText(" Pause ");
buttonRewind.setEnabled(true);
buttonForward.setEnabled(true);
isPause = false;
player.resume();
timer.resumeTimer();
playbackThread.interrupt();
}
private void rewind()
{
player.rewind();
timer.rewind();
timer.interrupt();
playbackThread.interrupt();
}
private void forward()
{
player.forward();
timer.forward();
timer.interrupt();
playbackThread.interrupt();
}
private void resetControls()
{
timer.reset();
timer.interrupt();
isPlaying = false;
buttonPlay.setText("Play");
buttonPause.setEnabled(false);
buttonRewind.setEnabled(false);
buttonForward.setEnabled(false);
}
private void init()
{
add(labelFileName, BorderLayout.NORTH);
add(labelTimeCounter, BorderLayout.WEST);
add(labelDuration, BorderLayout.EAST);
add(sliderTime, BorderLayout.CENTER);
JPanel buttonContainer =new JPanel();
add(buttonContainer, BorderLayout.SOUTH);
buttonContainer.add(buttonOpen);
buttonContainer.add(buttonPlay);
buttonContainer.add(buttonPause);
buttonContainer.add(buttonRewind);
buttonContainer.add(buttonForward);
}
}
На самом деле, 'slider.setValue' вызов должен быть сделан на тему событий диспетчерской (обернуть его в' SwingUtilities.invokeLater' вызова). Однако это не должно вызывать ЭТОЙ проблемы. Http://stackoverflow.com/help/mcve было бы неплохо. Но одна общая стратегия в таких случаях аналогична тому, что предложил Зоран: Определите ползунок, чтобы иметь «разумный» интервал, и пропорционально сопоставляйте фактический интервал с интервалом ползунка. – Marco13
Спасибо, Jslider всегда перекрашивается с помощью вызова SwingUtilities.invokeLater :) – QGA
Чтобы быть ясным: вызов 'setValue' изменяет модель, то есть состояние компонента Swing. Таким образом, вызов 'setValue' должен быть ** также ** выполнен в Thread Dispatch Thread. – Marco13