javax.sound.sampled.Clip#open ( )源码实例Demo

private Clip GetAudioClip(String path)
{
	File audioFile = new File(path);
	if (!audioFile.exists())
	{
		return null;
	}

	try (AudioInputStream audioStream = AudioSystem.getAudioInputStream(audioFile))
	{
		Clip audioClip = AudioSystem.getClip();
		audioClip.open(audioStream);
		FloatControl gainControl = (FloatControl) audioClip.getControl(FloatControl.Type.MASTER_GAIN);
		float gainValue = (((float) config.volume()) * 40f / 100f) - 35f;
		gainControl.setValue(gainValue);

		return audioClip;
	}
	catch (IOException | LineUnavailableException | UnsupportedAudioFileException e)
	{
		log.warn("Error opening audiostream from " + audioFile, e);
		return null;
	}
}
 

public void play(File file, Clip clip) {
    try {
        // get a mixer and play clip like that
        clip.addLineListener(new LineListener() {
            @Override
            public void update(LineEvent event) {
                if (event.getType() == LineEvent.Type.STOP) {
                    clip.close();
                }
            }
        });
        clip.open(AudioSystem.getAudioInputStream(file));
        clip.start();
    } catch (Exception exc) {
        exc.printStackTrace(System.out);
    }
}
 

private void playSirenSound() {
	try {
		File soundFile = new File(sirenFile);
		AudioInputStream soundIn = AudioSystem.getAudioInputStream(soundFile);
		AudioFormat format = soundIn.getFormat();
		DataLine.Info info = new DataLine.Info(Clip.class, format);
		clip = (Clip) AudioSystem.getLine(info);
		clip.addLineListener(new LineListener() {
			@Override
			public void update(LineEvent event) {
				if (event.getType() == LineEvent.Type.STOP) {
					soundOn = false;
				}
			}
		});
		clip.open(soundIn);
		clip.start();
		soundOn = true;
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

private static void test(final AudioFormat format, final byte[] data)
        throws Exception {
    final Line.Info info = new DataLine.Info(Clip.class, format);
    final Clip clip = (Clip) AudioSystem.getLine(info);

    go = new CountDownLatch(1);
    clip.addLineListener(event -> {
        if (event.getType().equals(LineEvent.Type.START)) {
            go.countDown();
        }
    });

    clip.open(format, data, 0, data.length);
    clip.start();
    go.await();
    while (clip.isRunning()) {
        // This loop should not hang
    }
    while (clip.isActive()) {
        // This loop should not hang
    }
    clip.close();
}
 

static public void playSound(String url) {
	if (url.isEmpty()) return;

	try {
		Clip clip = AudioSystem.getClip();
		BufferedInputStream x = new BufferedInputStream(new FileInputStream(url));
		AudioInputStream inputStream = AudioSystem.getAudioInputStream(x);
		clip.open(inputStream);
		clip.start();
	} catch (Exception e) {
		e.printStackTrace();
		System.err.println(e.getMessage());
	}
}
 

public static void play(Mixer mixer) {
    int res = 0;
    try {
        println("Getting clip from mixer...");
        source = (Clip) mixer.getLine(info);
        println("Opening clip...");
        source.open(audioFormat, audioData, 0, audioData.length);
        println("Starting clip...");
        source.loop(Clip.LOOP_CONTINUOUSLY);
        println("Now open your ears:");
        println("- if you hear a sine wave playing,");
        println("  listen carefully if you can hear clicks.");
        println("  If no, the bug is fixed.");
        println("- if you don't hear anything, it's possible");
        println("  that this mixer is not connected to an ");
        println("  amplifier, or that its volume is set to 0");
        key();
    } catch (IllegalArgumentException iae) {
        println("IllegalArgumentException: "+iae.getMessage());
        println("Sound device cannot handle this audio format.");
        println("ERROR: Test environment not correctly set up.");
        if (source!=null) {
            source.close();
            source = null;
        }
        return;
    } catch (LineUnavailableException lue) {
        println("LineUnavailableException: "+lue.getMessage());
        println("This is normal for some mixers.");
    } catch (Exception e) {
        println("Unexpected Exception: "+e.toString());
    }
    if (source != null) {
        println("Stopping...");
        source.stop();
        println("Closing...");
        source.close();
        println("Closed.");
        source = null;
    }
}
 

private static boolean doMixerClip(Mixer mixer, AudioFormat format) {
    if (mixer==null) return false;
    try {
        System.out.println("Trying mixer "+mixer+":");
            DataLine.Info info = new DataLine.Info(
                                      Clip.class,
                                      format,
                                      (int) samplerate);

            Clip clip = (Clip) mixer.getLine(info);
        System.out.println("  - got clip: "+clip);
        System.out.println("  - open with format "+format);
        clip.open(format, buffer, 0, buffer.length);
        System.out.println("  - playing...");
        clip.start();
        System.out.println("  - waiting while it's active...");
        while (clip.isActive())
                Thread.sleep(100);
        System.out.println("  - waiting 100millis");
        Thread.sleep(100);
        System.out.println("  - drain1");
        clip.drain();
        System.out.println("  - drain2");
        clip.drain();
        System.out.println("  - stop");
        clip.stop();
        System.out.println("  - close");
        clip.close();
        System.out.println("  - closed");
    } catch (Throwable t) {
        System.out.println("  - Caught exception. Not failed.");
        System.out.println("  - "+t.toString());
        return false;
    }
    return true;
}
 

/**
 * This method allows to actually play the sound provided from the
 * {@link #audioInputStream}
 * 
 * @throws LineUnavailableException
 *             if the {@link Clip} object can't be created
 * @throws IOException
 *             if the audio file can't be find
 */
protected void play() throws LineUnavailableException, IOException {
	final Clip clip = AudioSystem.getClip();
	clip.addLineListener(listener);
	clip.open(audioInputStream);
	try {
		clip.start();
		listener.waitUntilDone();
	} catch (final InterruptedException e) {
		e.printStackTrace();
	} finally {
		clip.close();
	}
	audioInputStream.close();
}
 

private void loadClip() {
	clipLoaded = true;
	try {
		AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(The5zigMod.getModDirectory(),
				"media/" + The5zigMod.getDataManager().getUniqueId().toString() + "/" + ((ConversationChat) getMessage().getConversation()).getFriendUUID().toString() + "/" +
						getAudioData().getHash()));
		clip = (Clip) AudioSystem.getLine(new Line.Info(Clip.class));
		clip.open(audioInputStream);
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

private static Clip createClip() throws LineUnavailableException {
    AudioFormat format =
            new AudioFormat(PCM_SIGNED, 44100, 8, 1, 1, 44100, false);
    DataLine.Info info = new DataLine.Info(Clip.class, format);
    Clip clip = (Clip) AudioSystem.getLine(info);
    clip.open(format, new byte[2], 0, 2);
    return clip;
}
 

static Clip createClip(final AudioInputStream inputStream) {
    Clip clip = null;
    try {
        clip = AudioSystem.getClip();
        clip.open(inputStream);
    } catch (final LineUnavailableException | IOException e) {
        e.printStackTrace();
    }

    return clip;
}
 

public static synchronized Clip playback(AudioInputStream in, float addVolume) {
    try {
        AudioFormat baseFormat = in.getFormat();
        AudioFormat decodedFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                baseFormat.getSampleRate(),
                16,
                baseFormat.getChannels(),
                baseFormat.getChannels() * 2,
                baseFormat.getSampleRate(),
                false);
        AudioInputStream ain = AudioSystem.getAudioInputStream(decodedFormat, in);
        DataLine.Info info = new DataLine.Info(Clip.class, decodedFormat);

        // https://stackoverflow.com/questions/25564980/java-use-a-clip-and-a-try-with-resources-block-which-results-with-no-sound
        final Clip clip = (Clip) AudioSystem.getLine(info);
        clip.open(ain);
        // Input stream must be closed, or else some thread is still running when application is exited.
        in.close();
        ain.close();
        FloatControl gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
        gainControl.setValue(addVolume); // Add volume by decibels.
        return clip;

    } catch (Exception e) {
        logger.debug(e.toString());
        return null;
    }
}
 

public static void play(InputStream in)
{
	try
	{
		AudioInputStream stream = AudioSystem.getAudioInputStream(in);
		AudioFormat format = stream.getFormat();
		DataLine.Info info = new DataLine.Info(Clip.class, format);
		
		final Clip clip = (Clip)AudioSystem.getLine(info);
		clip.addLineListener(new LineListener()
		{
			public void update(LineEvent ev)
			{
				LineEvent.Type t = ev.getType();
				if(t == LineEvent.Type.STOP)
				{
					clip.close();
				}
			}
		});
		clip.open(stream);
		clip.start();
	}
	catch(Exception e)
	{
		Log.err(e);
	}
}
 

private void playSound(String soundName) {
	try {
		AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(soundName).getAbsoluteFile());
		AudioFormat format = audioInputStream.getFormat();
		DataLine.Info info = new DataLine.Info(Clip.class, format);
		Clip clip = (Clip) AudioSystem.getLine(info);
		clip.open(audioInputStream);
		clip.start();
	} catch (IllegalArgumentException | IOException | LineUnavailableException | UnsupportedAudioFileException e) {
		e.printStackTrace();
	}
}
 

private static Clip createClip() throws LineUnavailableException {
    AudioFormat format =
            new AudioFormat(PCM_SIGNED, 44100, 8, 1, 1, 44100, false);
    DataLine.Info info = new DataLine.Info(Clip.class, format);
    Clip clip = (Clip) AudioSystem.getLine(info);
    clip.open(format, new byte[2], 0, 2);
    return clip;
}
 

private static void doMixerClip(Mixer mixer) throws Exception {
    boolean waitedEnough=false;
    try {
        DataLine.Info info = new DataLine.Info(Clip.class, format);
        Clip clip = (Clip) mixer.getLine(info);
        clip.open(format, soundData, 0, soundData.length);

        // sanity
        if (clip.getMicrosecondLength()/1000 < 9900) {
            throw new Exception("clip's microsecond length should be at least 9900000, but it is "+clip.getMicrosecondLength());
        }
        long start = System.currentTimeMillis();

        System.out.println(" ---------- start --------");
        clip.start();
        // give time to actually start it. ALSA implementation needs that...
        Thread.sleep(300);
        System.out.println("drain ... ");
        clip.drain();
        long elapsedTime = System.currentTimeMillis() - start;
        System.out.println("close ... ");
        clip.close();
        System.out.println("... done");
        System.out.println("Playback duration: "+elapsedTime+" milliseconds.");
        waitedEnough = elapsedTime >= ((clip.getMicrosecondLength() / 1000) - TOLERANCE_MS);
    } catch (Throwable t) {
            System.out.println("  - Caught exception. Not failed.");
            System.out.println("  - "+t.toString());
            return;
    }
    if (!waitedEnough) {
        throw new Exception("Drain did not wait long enough to play entire clip.");
    }
    successfulTests++;
}
 

public long start() throws Exception {
    AudioFormat format = new AudioFormat(44100, 16, 2, true, false);

    if (addLen) {
        staticLen+=(int) (staticLen/5)+1000;
    } else {
        staticLen-=(int) (staticLen/5)+1000;
    }
    if (staticLen>8*44100*4) {
        staticLen = 8*44100*4;
        addLen=!addLen;
    }
    if (staticLen<1000) {
        staticLen = 1000;
        addLen=!addLen;
    }
    int len = staticLen;
    len -= (len % 4);
    out("  Test program: preparing to play back "+len+" bytes == "+bytes2Ms(len, format)+"ms audio...");

    byte[] fakedata=new byte[len];
    InputStream is = new ByteArrayInputStream(fakedata);
    AudioInputStream ais = new AudioInputStream(is, format, fakedata.length/format.getFrameSize());

    DataLine.Info info = new DataLine.Info(Clip.class, ais.getFormat());
    clip = (Clip) AudioSystem.getLine(info);
    clip.addLineListener(this);

    out("  Test program: opening clip="+((clip==null)?"null":clip.toString()));
    clip.open(ais);
    ais.close();
    out("  Test program: starting clip="+((clip==null)?"null":clip.toString()));
    clip.start();
    return bytes2Ms(fakedata.length, format);
}
 

private static Clip createClip() throws LineUnavailableException {
    AudioFormat format =
            new AudioFormat(PCM_SIGNED, 44100, 8, 1, 1, 44100, false);
    DataLine.Info info = new DataLine.Info(Clip.class, format);
    Clip clip = (Clip) AudioSystem.getLine(info);
    clip.open(format, new byte[2], 0, 2);
    return clip;
}
 

static protected void test()
        throws LineUnavailableException, InterruptedException {
    DataLine.Info info = new DataLine.Info(Clip.class, format);
    Clip clip = (Clip)AudioSystem.getLine(info);
    final MutableBoolean clipStoppedEvent = new MutableBoolean(false);
    clip.addLineListener(new LineListener() {
        @Override
        public void update(LineEvent event) {
            if (event.getType() == LineEvent.Type.STOP) {
                synchronized (clipStoppedEvent) {
                    clipStoppedEvent.value = true;
                    clipStoppedEvent.notifyAll();
                }
            }
        }
    });
    clip.open(format, soundData, 0, soundData.length);

    long lengthClip = clip.getMicrosecondLength() / 1000;
    log("Clip length " + lengthClip + " ms");
    log("Playing...");
    for (int i=1; i<=LOOP_COUNT; i++) {
        long startTime = currentTimeMillis();
        log(" Loop " + i);
        clip.start();

        synchronized (clipStoppedEvent) {
            while (!clipStoppedEvent.value) {
                clipStoppedEvent.wait();
            }
            clipStoppedEvent.value = false;
        }

        long endTime = currentTimeMillis();
        long lengthPlayed = endTime - startTime;

        if (lengthClip > lengthPlayed + 20) {
            log(" ERR: Looks like sound didn't play: played " + lengthPlayed + " ms instead " + lengthClip);
            countErrors++;
        } else {
            log(" OK: played " + lengthPlayed + " ms");
        }
        clip.setFramePosition(0);

    }
    log("Played " + LOOP_COUNT + " times, " + countErrors + " errors detected.");
}
 

public static long start() throws Exception {
    AudioFormat fmt = new AudioFormat(44100, 16, 2, true, false);
    if (addLen) {
        staticLen += (int) (staticLen / 5) + 1000;
    } else {
        staticLen -= (int) (staticLen / 5) + 1000;
    }
    if (staticLen > 8 * 44100 * 4) {
        staticLen = 8 * 44100 * 4;
        addLen = !addLen;
    }
    if (staticLen < 1000) {
        staticLen = 1000;
        addLen = !addLen;
    }
    int len = staticLen;
    len -= (len % 4);
    byte[] fakedata = new byte[len];
    InputStream is = new ByteArrayInputStream(fakedata);
    AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                                         44100, 16, 2, 4, 44100, false);
    AudioInputStream ais = new AudioInputStream(is, format, fakedata.length
            / format.getFrameSize());

    out("    preparing to play back " + len + " bytes == " + bytes2Ms(len,
                                                                      format)
                + "ms audio...");

    DataLine.Info info = new DataLine.Info(Clip.class, ais.getFormat());
    clip = (Clip) AudioSystem.getLine(info);
    clip.addLineListener(new LineListener() {
        public void update(LineEvent e) {
            if (e.getType() == LineEvent.Type.STOP) {
                out("    calling close() from event dispatcher thread");
                ((Clip) e.getSource()).close();
            } else if (e.getType() == LineEvent.Type.CLOSE) {
            }
        }
    });

    out("    opening...");
    try {
        clip.open(ais);
    } catch (Throwable t) {
        t.printStackTrace();
        clip.close();
        clip = null;
    }
    ais.close();
    if (clip != null) {
        out("    starting...");
        clip.start();
    }
    return bytes2Ms(fakedata.length, format);
}