Java DataLine类代码示例

import javax.sound.sampled.DataLine; //导入依赖的package包/类
/** Creates a new instance of test. Opens the microphone input as the target line.
     * To start the reporting, {@link #start} the thread.
     * @throws LineUnavailableException if microphone input is not available
     */
    public VirtualDrummerMicrophoneInput () throws LineUnavailableException{
//        getAudioInfo();  // prints lots of useless information
        format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,sampleRate,8,1,1,sampleRate,false);

        DataLine.Info dlinfo = new DataLine.Info(TargetDataLine.class,
                format);
        if ( AudioSystem.isLineSupported(dlinfo) ){
            targetDataLine = (TargetDataLine)AudioSystem.getLine(dlinfo);
        }
        targetDataLine.open(format,bufferSize);
        bufferSize=targetDataLine.getBufferSize();
        gui = new DrumSoundDetectorDemo();
        gui.setVirtualDrummerMicrophoneInput(this);

    }
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private static void init() {
	try {
		// 44,100 samples per second, 16-bit audio, mono, signed PCM, little
		// Endian
		AudioFormat format = new AudioFormat((float) SAMPLE_RATE, BITS_PER_SAMPLE, 1, true, false);
		DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);

		line = (SourceDataLine) AudioSystem.getLine(info);
		line.open(format, SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE);

		// the internal buffer is a fraction of the actual buffer size, this
		// choice is arbitrary
		// it gets divided because we can't expect the buffered data to line
		// up exactly with when
		// the sound card decides to push out its samples.
		buffer = new byte[SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE / 3];
	} catch (LineUnavailableException e) {
		System.out.println(e.getMessage());
	}

	// no sound gets made before this call
	line.start();
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
public static void main(String[] args) throws Exception {
	AbstractRcomArgs a=new AbstractRcomArgs();
	UtilCli.parse(a, args, true);
	File folder=new File("/home/rizsi/tmp/video");
	byte[] data=UtilFile.loadFile(new File(folder, "remote.sw"));
	AudioFormat format=ManualTestEchoCancel.getFormat();
	final Mixer mixer = AudioSystem.getMixer(null);
	DataLine.Info info2= new DataLine.Info(SourceDataLine.class, format);
	SourceDataLine s=(SourceDataLine) mixer.getLine(info2);
	s.open(format, framesamples*2);
	s.start();
	try(LoopInputStream lis=new LoopInputStream(data))
	{
		try(JitterResampler rs=new JitterResampler(a, 8000, framesamples, 2))
		{
			new FeedThread(lis, rs).start();
			final byte[] buffer=new byte[framesamples*2];;
			while(true)
			{
				rs.readOutput(buffer);
				s.write(buffer, 0, buffer.length);
			}
		}
	}
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private boolean createSourceDataLine() {
    if (DEBUG || Printer.debug)Printer.debug("JavaSoundAudioClip.createSourceDataLine()");
    try {
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, loadedAudioFormat);
        if (!(AudioSystem.isLineSupported(info)) ) {
            if (DEBUG || Printer.err)Printer.err("Line not supported: "+loadedAudioFormat);
            // fail silently
            return false;
        }
        SourceDataLine source = (SourceDataLine) AudioSystem.getLine(info);
        datapusher = new DataPusher(source, loadedAudioFormat, loadedAudio, loadedAudioByteLength);
    } catch (Exception e) {
        if (DEBUG || Printer.err)e.printStackTrace();
        // fail silently
        return false;
    }

    if (datapusher==null) {
        // fail silently
        return false;
    }

    if (DEBUG || Printer.debug)Printer.debug("Created SourceDataLine.");
    return true;
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
public ExtendedClip(JuggleMasterPro objPjuggleMasterPro, byte bytPsoundFileIndex) {

		this.bytGsoundFileIndex = bytPsoundFileIndex;
		try {
			final AudioInputStream objLaudioInputStream =
															AudioSystem.getAudioInputStream(new File(Strings.doConcat(	objPjuggleMasterPro.strS_CODE_BASE,
																														Constants.strS_FILE_NAME_A[Constants.intS_FILE_FOLDER_SOUNDS],
																														objPjuggleMasterPro.chrGpathSeparator,
																														Constants.strS_FILE_SOUND_NAME_A[bytPsoundFileIndex])));
			final AudioFormat objLaudioFormat = objLaudioInputStream.getFormat();
			final DataLine.Info objLdataLineInfo =
													new DataLine.Info(Clip.class, objLaudioFormat, (int) objLaudioInputStream.getFrameLength()
																									* objLaudioFormat.getFrameSize());
			this.objGclip = (Clip) AudioSystem.getLine(objLdataLineInfo);
			this.objGclip.open(objLaudioInputStream);
		} catch (final Throwable objPthrowable) {
			Tools.err("Error while initializing sound : ", Constants.strS_FILE_SOUND_NAME_A[bytPsoundFileIndex]);
			this.objGclip = null;
		}
	}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
@Override
public int getMaxLines(Line.Info info) {
    Line.Info fullInfo = getLineInfo(info);

    // if it's not supported at all, return 0.
    if (fullInfo == null) {
        return 0;
    }

    if (fullInfo instanceof DataLine.Info) {
        // DirectAudioDevices should mix !
        return getMaxSimulLines();
    }

    return 0;
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
@Override
public void startPlayback(final ISyncAudioSource resampler) {
	final AudioFormat format = StreamSourceAudio.getFormat();
	new Thread("Audio output") {
		private byte[] buffer;
		public void run() {
			try {
				DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
				try(SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info))
				{
					line.open(format, StreamSourceAudio.requestBufferSize);
					line.start();
					buffer=new byte[line.getBufferSize()];
					while(!resampler.isClosed())
					{
						resampler.readOutput(buffer);
						line.write(buffer, 0, buffer.length);
					}
				}
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		};
	}.start();
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
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();
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private static void doLine2(DataLine line, AudioFormat format) {
    try {
        System.out.println("  - call to open()");
        line.open();
        try {
            System.out.println("  - line has format: "+line.getFormat());
            if (!line.getFormat().matches(format)) {
                System.out.println("## Error: expected this format: "+format);
                failed++;
            } else {
                passed++;
            }
        } finally {
            line.close();
            System.out.println("  - closed");
        }
    } catch (Throwable t) {
        System.out.println("  - Caught exception. Not failed.");
        System.out.println("  - "+t.toString());
    }
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private static void doMixerClip(Mixer mixer, AudioFormat format) {
    if (mixer==null) return;
    try {
        System.out.println("Clip from mixer "+mixer+":");
        System.out.println("   "+mixer.getMixerInfo());
            DataLine.Info info = new DataLine.Info(
                                      Clip.class,
                                      format);

        if (mixer.isLineSupported(info)) {
            Clip clip = (Clip) mixer.getLine(info);
            doLine1(clip, format);
        } else {
            System.out.println("  - Line not supported");
        }
    } catch (Throwable t) {
        System.out.println("  - Caught exception. Not failed.");
        System.out.println("  - "+t.toString());
    }
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private static void doMixerSDL(Mixer mixer, AudioFormat format) {
    if (mixer==null) return;
    try {
        System.out.println("SDL from mixer "+mixer+":");
            DataLine.Info info = new DataLine.Info(
                                      SourceDataLine.class,
                                      format);

        if (mixer.isLineSupported(info)) {
            SourceDataLine sdl = (SourceDataLine) mixer.getLine(info);
            doLine1(sdl, format);
            doLine2(sdl, format);
        } else {
            System.out.println("  - Line not supported");
        }
    } catch (Throwable t) {
        System.out.println("  - Caught exception. Not failed.");
        System.out.println("  - "+t.toString());
    }
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private static void doMixerTDL(Mixer mixer, AudioFormat format) {
    if (mixer==null) return;
    try {
        System.out.println("TDL from mixer "+mixer+":");
            DataLine.Info info = new DataLine.Info(
                                      TargetDataLine.class,
                                      format);
        if (mixer.isLineSupported(info)) {
            TargetDataLine tdl = (TargetDataLine) mixer.getLine(info);
            doLine1(tdl, format);
            doLine2(tdl, format);
        } else {
            System.out.println("  - Line not supported");
        }
    } catch (Throwable t) {
        System.out.println("  - Caught exception. Not failed.");
        System.out.println("  - "+t.toString());
    }
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
public static void checkLines(Mixer mixer, Line.Info[] infos) {
    for (int i = 0; i<infos.length; i++) {
        try {
            if (infos[i] instanceof DataLine.Info) {
                DataLine.Info info = (DataLine.Info) infos[i];
                System.out.println(" Line "+info+" (max. "+mixer.getMaxLines(info)+" simultaneously): ");
                AudioFormat[] formats = info.getFormats();
                for (int f = 0; f < formats.length; f++) {
                    try {
                        AudioFormat otherEndianOrSign = getOtherEndianOrSign(formats[f]);
                        if (otherEndianOrSign != null) {
                            checkFormat(formats, otherEndianOrSign);
                        }
                    } catch (Exception e1) {
                        out("  Unexpected exception when getting a format: "+e1);
                    }
                }
            }
        } catch (Exception e) {
            out(" Unexpected exception when getting a line: "+e);
        }
    }
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
void playRecorded(AudioFormat format, byte[] data) throws Exception {
    //SourceDataLine line = AudioSystem.getSourceDataLine(format);
    DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
    SourceDataLine line = (SourceDataLine)AudioSystem.getLine(info);

    line.open();
    line.start();

    int remaining = data.length;
    while (remaining > 0) {
        int avail = line.available();
        if (avail > 0) {
            if (avail > remaining)
                avail = remaining;
            int written = line.write(data, data.length - remaining, avail);
            remaining -= written;
            log("Playing: " + written + " bytes written");
        } else {
            delay(100);
        }
    }

    line.drain();
    line.stop();
}
 

import javax.sound.sampled.DataLine; //导入依赖的package包/类
private void enableHorn () throws UnsupportedAudioFileException, IOException, LineUnavailableException
{
    if ( ( this.clip == null || !this.clip.isRunning () ) && Activator.getDefault ().getPreferenceStore ().getBoolean ( PreferenceConstants.BELL_ACTIVATED_KEY ) )
    {
        final AudioInputStream sound = AudioSystem.getAudioInputStream ( this.soundFile );
        final DataLine.Info info = new DataLine.Info ( Clip.class, sound.getFormat () );
        this.clip = (Clip)AudioSystem.getLine ( info );
        this.clip.open ( sound );
        this.clip.loop ( Clip.LOOP_CONTINUOUSLY );
    }
    if ( !this.bellIcon.isDisposed () )
    {
        this.bellIcon.setImage ( getBellIcon () );
    }
}