Java录音小程序（3）个

import javax.sound.sampled.*; import javax.swing.JFrame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.Toolkit; import javax.swing.JPanel; import java.awt.event.ActionListener; import javax.sound.sampled.AudioInputStream; import javax.swing.JButton; import java.io.File; import java.util.Vector; import java.awt.BorderLayout; import javax.swing.border.EmptyBorder; import javax.swing.border.SoftBevelBorder; import javax.swing.BoxLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import javax.sound.sampled.AudioFileFormat; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.TargetDataLine; import javax.sound.sampled.AudioSystem; import java.io.IOException; import javax.sound.sampled.DataLine; import javax.sound.sampled.LineUnavailableException; import java.io.ByteArrayOutputStream; import java.io.ByteArrayInputStream; /** * @see java录音程序 * * */ public class RecordTest extends JPanel implements ActionListener { final int bufSize = 16384; Capture capture = new Capture(); AudioInputStream audioInputStream; JButton captB; String fileName = "untitled"; String errStr; double duration, seconds; File file; Vector lines = new Vector(); public RecordTest() { setLayout(new BorderLayout()); EmptyBorder eb = new EmptyBorder(5, 5, 5, 5); SoftBevelBorder sbb = new SoftBevelBorder(SoftBevelBorder.LOWERED); setBorder(new EmptyBorder(5, 5, 5, 5)); JPanel p1 = new JPanel(); p1.setBorder(sbb); p1.setLayout(new BoxLayout(p1, BoxLayout.Y_AXIS)); JPanel buttonsPanel = new JPanel(); buttonsPanel.setBorder(new EmptyBorder(10, 0, 5, 0)); captB = addButton("Record", buttonsPanel, true); p1.add(buttonsPanel); add(p1); } public void open() { } public void close() { if (capture.thread != null) captB.doClick(0); } private JButton addButton(String name, JPanel p, boolean state) { JButton b = new JButton(name); b.addActionListener(this); b.setEnabled(state); p.add(b); return b; } public void actionPerformed(ActionEvent e) { Object obj = e.getSource(); if (obj.equals(captB)) { if (captB.getText().startsWith("Record")) { file = null; capture.start(); fileName = "untitled"; captB.setText("Stop"); } else { lines.removeAllElements(); capture.stop(); captB.setText("Record"); } } } public void createAudioInputStream(File file, boolean updateComponents) { if (file != null && file.isFile()) { try { this.file = file; errStr = null; audioInputStream = AudioSystem.getAudioInputStream(file); fileName = file.getName(); long milliseconds = (long) ((audioInputStream.getFrameLength() * 1000) / audioInputStream .getFormat().getFrameRate()); duration = milliseconds / 1000.0; if (updateComponents) { } } catch (Exception ex) { reportStatus(ex.toString()); } } else { reportStatus("Audio file required."); } } public void saveToFile(String name, AudioFileFormat.Type fileType) { if (audioInputStream == null) { reportStatus("No loaded audio to save"); return; } else if (file != null) { createAudioInputStream(file, false); } // reset to the beginnning of the captured data try { audioInputStream.reset(); } catch (Exception e) { reportStatus("Unable to reset stream " + e); return; } File file = new File(fileName = name); try { if (AudioSystem.write(audioInputStream, fileType, file) == -1) { throw new IOException("Problems writing to file"); } } catch (Exception ex) { reportStatus(ex.toString()); } } private void reportStatus(String msg) { if ((errStr = msg) != null) { System.out.println(errStr); } } class Capture implements Runnable { TargetDataLine line; Thread thread; public void start() { errStr = null; thread = new Thread(this); thread.setName("Capture"); thread.start(); } public void stop() { thread = null; } private void shutDown(String message) { if ((errStr = message) != null && thread != null) { thread = null; captB.setText("Record"); System.err.println(errStr); } } public void run() { duration = 0; audioInputStream = null; // get an AudioInputStream of the desired format for playback AudioFormat.Encoding encoding = AudioFormat.Encoding.PCM_SIGNED; // define the required attributes for our line, // and make sure a compatible line is supported. // float rate = 44100f; // int sampleSize = 16; // String signedString = "signed"; // boolean bigEndian = true; // int channels = 2; float rate = 8000f; int sampleSize = 8; String signedString = "signed"; boolean bigEndian = true; int channels = 1; AudioFormat format = new AudioFormat(encoding, rate, sampleSize, channels, (sampleSize / 8) * channels, rate, bigEndian); DataLine.Info info = new DataLine.Info(TargetDataLine.class, format); if (!AudioSystem.isLineSupported(info)) { shutDown("Line matching " + info + " not supported."); return; } // get an AudioInputStream of the desired format for playback try { line = (TargetDataLine) AudioSystem.getLine(info); line.open(format, line.getBufferSize()); } catch (LineUnavailableException ex) { shutDown("Unable to open the line: " + ex); return; } catch (SecurityException ex) { shutDown(ex.toString()); return; } catch (Exception ex) { shutDown(ex.toString()); return; } // play back the captured audio data ByteArrayOutputStream out = new ByteArrayOutputStream(); int frameSizeInBytes = format.getFrameSize(); int bufferLengthInFrames = line.getBufferSize() / 8; int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes; byte[] data = new byte[bufferLengthInBytes]; int numBytesRead; line.start(); while (thread != null) { if ((numBytesRead = line.read(data, 0, bufferLengthInBytes)) == -1) { break; } out.write(data, 0, numBytesRead); } // we reached the end of the stream. stop and close the line. line.stop(); line.close(); line = null; // stop and close the output stream try { out.flush(); out.close(); } catch (IOException ex) { ex.printStackTrace(); } // load bytes into the audio input stream for playback byte audioBytes[] = out.toByteArray(); ByteArrayInputStream bais = new ByteArrayInputStream(audioBytes); audioInputStream = new AudioInputStream(bais, format, audioBytes.length / frameSizeInBytes); long milliseconds = (long) ((audioInputStream.getFrameLength() * 1000) / format .getFrameRate()); duration = milliseconds / 1000.0; try { audioInputStream.reset(); } catch (Exception ex) { ex.printStackTrace(); return; } saveToFile("record.wav", AudioFileFormat.Type.WAVE); } } public static void main(String[] args) { RecordTest test = new RecordTest(); test.open(); JFrame f = new JFrame("Capture"); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); f.getContentPane().add("Center", test); f.pack(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); int w = 500; int h = 340; f.setLocation(screenSize.width / 2 - w / 2, screenSize.height / 2 - h / 2); f.setSize(w, h); f.show(); } }