Java Rational类代码示例

import org.monte.media.math.Rational; //导入依赖的package包/类
public MonteScreenRecorder() {
	GraphicsConfiguration gc = GraphicsEnvironment
			.getLocalGraphicsEnvironment().getDefaultScreenDevice()
			.getDefaultConfiguration();
	this.files = new TreeSet<File>();
	try {
		this.screenRecorder = new ScreenRecorder(gc, new Format(
				MediaTypeKey, MediaType.FILE, MimeTypeKey, FormatKeys.MIME_QUICKTIME),
				new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey,
						VideoFormatKeys.ENCODING_QUICKTIME_ANIMATION,
						CompressorNameKey,
						ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE, DepthKey,
						24, FrameRateKey, Rational.valueOf(15), QualityKey,
						1.0f, KeyFrameIntervalKey, 15 * 60), new Format(
						MediaTypeKey, MediaType.VIDEO, EncodingKey,
						"black", FrameRateKey, Rational.valueOf(30)), null);
	} catch (Exception e) {
		throw new RuntimeException(e);
	}

}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
private void updateImage() {
    final Movie movie = getMovie();
    if (movie == null) {
        return;
    }

    execute(new Worker<BufferedImage>() {

        @Override
        protected BufferedImage construct() throws Exception {
            Rational time=movie.getInsertionPoint(); 
            
            
            return null;
        }

        @Override
        protected void done(BufferedImage value) {
            imagePanel.setImage(value);
        }
        
    });
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
/**
 * Creates a screen recorder.
 *
 * @param cfg Graphics configuration of the capture screen.
 */
public ScreenRecorder(GraphicsConfiguration cfg) throws IOException, AWTException {
    this(cfg, null,
            // the file format
            new Format(MediaTypeKey, MediaType.FILE,
            MimeTypeKey, MIME_QUICKTIME),
            //
            // the output format for screen capture
            new Format(MediaTypeKey, MediaType.VIDEO,
            EncodingKey, ENCODING_QUICKTIME_ANIMATION,
            CompressorNameKey, COMPRESSOR_NAME_QUICKTIME_ANIMATION,
            DepthKey, 24, FrameRateKey, new Rational(15, 1)),
            //
            // the output format for mouse capture 
            new Format(MediaTypeKey, MediaType.VIDEO,
            EncodingKey, ENCODING_BLACK_CURSOR,
            FrameRateKey, new Rational(30, 1)),
            //
            // the output format for audio capture 
            new Format(MediaTypeKey, MediaType.AUDIO,
            EncodingKey, ENCODING_QUICKTIME_TWOS_PCM,
            FrameRateKey, new Rational(48000, 1),
            SampleSizeInBitsKey, 16,
            ChannelsKey, 2, SampleRateKey, new Rational(48000, 1),
            SignedKey, true, ByteOrderKey, ByteOrder.BIG_ENDIAN));
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
@Override
public Rational getDuration() {
    try {
        ensureRealized();
    } catch (IOException ex) {
        ex.printStackTrace();
        return new Rational(0, 1);
    }
    if (movieDuration == null) {
        Rational maxDuration = new Rational(0, 1);
        for (Track tr : tracks) {
            Rational trackDuration = new Rational((tr.length * tr.scale + tr.startTime), tr.rate);
            if (maxDuration.compareTo(trackDuration) < 0) {
                maxDuration = trackDuration;
            }
        }
        movieDuration = maxDuration;
    }
    return movieDuration;
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
@Override
public long timeToSample(int track, Rational time) {
    Track tr = tracks.get(track);
    // This only works, if all samples contain only one sample!
    // FIXME - We foolishly assume that only audio tracks have more than one
    // sample in a frame.
    // FIXME - We foolishly assume that all samples have a sampleDuration != 0.
    long index = time.getNumerator() * tr.rate / time.getDenominator() / tr.scale - tr.startTime;
    if (tr.mediaType == AVIMediaType.AUDIO) {
        int count = 0;
        // FIXME This is very inefficient, perform binary search with sample.timestamp
        // this will work for all media types!
        for (int i = 0, n = tr.samples.size(); i < n; i++) {
            long d = tr.samples.get(i).duration * tr.scale; // foolishly assume that sampleDuration = sample count
            if (count + d > index) {
                index = i;
                break;
            }
            count += d;

        }
    }

    return max(0, min(index, tr.samples.size()));
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
private static String videoToString(Format f) {
    StringBuilder buf = new StringBuilder();
    buf.append(f.get(EncodingKey))//
            .append(", ")//
            .append(f.get(WidthKey))//
            .append("x")//
            .append(f.get(HeightKey))//
            .append(", ")//
            .append(f.get(DepthKey))//
            .append("-bit, ")//
            .append(f.get(FrameRateKey,new Rational(0,0)))//
            .append(" fps")//
            .append(f.get(FixedFrameRateKey,false) ? ", fixed rate" : "")//
            .append(f.get(PixelAspectRatioKey,new Rational(1,1)).equals(new Rational(1, 1)) ? "" : ", " + f.get(PixelAspectRatioKey) + " pixel ratio")//
            .append("")//
            ;
    return buf.toString();
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
@Override
public void mouseDragged(MouseEvent e) {
    if (movie == null) {
        return;
    }
    if (pressedHandle != null) {
        Rational time = posToTime(e.getX());
        switch (pressedHandle) {
            case SelectionStart:
                time = Rational.min(time, movie.getSelectionEnd());
                movie.setSelectionStart(time);
                movie.setInsertionPoint(time);
                break;
            case SelectionEnd:
                time = Rational.max(movie.getSelectionStart(), time);
                movie.setSelectionEnd(time);
                movie.setInsertionPoint(time);
                break;
            case InsertionPoint:
                movie.setInsertionPoint(time);
                break;
        }

    }
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
protected void updateTimeLabel() {
    Movie movie = getMovie();
    Rational time = movie == null ? new Rational(0,1) : movie.getInsertionPoint();
    int hours = (int) time.floor(1).getNumerator()/3600;
    int minutes = (int) (time.floor(1).getNumerator() / 60) % 60;
    int seconds = (int) (time.floor(1).getNumerator() % 60);
    int frame = movie == null ? 0 : (int) (movie.timeToSample(0, time) - movie.timeToSample(0, time.floor(1)));
    switch (labelMode) {
        case TIME:
            timeLabel.setText((hours < 10 ? "0" + hours : hours) + ":" + (minutes < 10 ? "0" + minutes : minutes)
                    + ":" + (seconds < 10 ? "0" + seconds : seconds)
                    + "." + (frame < 10 ? "0" + frame : frame));

            break;
        case FRAME:
            timeLabel.setText(Long.toString(movie.timeToSample(0, movie.getInsertionPoint()) ));
            break;
    }
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
private static void reduceListRational(Rational value, InfGetter<Rational> g, ArrayList<AmigaDisplayInfo> infs) {
    ArrayList<AmigaDisplayInfo> bestInfs = new ArrayList<AmigaDisplayInfo>();
    bestInfs.add(infs.get(0));
    float bestCost = g.get(infs.get(0)).subtract(value).floatValue();
    bestCost *= bestCost;
    for (Iterator<AmigaDisplayInfo> i = infs.iterator(); i.hasNext();) {
        AmigaDisplayInfo inf = i.next();
        Rational iv = g.get(inf);
        if (iv.compareTo(value) != 0) {
            i.remove();
        }
        float icost = iv.subtract(value).floatValue();
        icost *= icost;
        if (icost < bestCost) {
            bestInfs.clear();
            bestCost = icost;
        } else if (icost == bestCost) {
            bestInfs.add(inf);
        }
    }
    if (infs.isEmpty()) {
        infs.addAll(bestInfs);
    }
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
public SpecializedScreenRecorder(GraphicsConfiguration cfg, String name,
		Configuration config) throws IOException, AWTException {
	super(cfg, new Format(MediaTypeKey, MediaType.FILE, MimeTypeKey,
			config.getValue("video.format", MIME_QUICKTIME)), new Format(
			MediaTypeKey, MediaType.VIDEO, EncodingKey,
			config.getValue("video.encoding",
					ENCODING_QUICKTIME_CINEPAK),
			CompressorNameKey, config.getValue("video.compression",
					COMPRESSOR_NAME_QUICKTIME_CINEPAK), DepthKey,
			(int) 24, FrameRateKey, Rational.valueOf(Integer
					.parseInt(config.getValue("video.format.frameRate",
							"15"))), QualityKey, 1.0f, KeyFrameIntervalKey,
			(int) (15 * 60)), new Format(MediaTypeKey, MediaType.VIDEO,
			EncodingKey, "black", FrameRateKey, Rational.valueOf(30)), null);
	this.name = name;
	this.config = config;
	this.setMaxFileSize(Long.parseLong(config.getValue("maxFileSize",MAX_SIZE_DEFAULT_KB)));
	this.setMaxRecordingTime(Long.parseLong(config.getValue("maxRecordingTime",MAX_DURATION_DEFAULT_MS)));
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
private static void writeMovie(File file, BufferedImage[] frames) throws IOException {
    MovieWriter out = Registry.getInstance().getWriter(file);

    Format format = new Format(MediaTypeKey, MediaType.VIDEO, //
            EncodingKey, ENCODING_AVI_MJPG,
            FrameRateKey, new Rational(30, 1),//
            WidthKey, frames[0].getWidth(), //
            HeightKey, frames[0].getHeight(),//
            DepthKey, 24
            );

    int track = out.addTrack(format);

    try {
        Buffer buf = new Buffer();
        buf.format = new Format(DataClassKey, BufferedImage.class);
        buf.sampleDuration = format.get(FrameRateKey).inverse();
        for (int i = 0; i < frames.length; i++) {
            buf.data = frames[i];
            out.write(track, buf);
        }
    } finally {
        out.close();
    }
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
/**
 * initializes a graphic configurations
 */
public static void initScreen() {
	// get the graphics configuration of the current screen
	GraphicsConfiguration gc = GraphicsEnvironment
			.getLocalGraphicsEnvironment()
			.getDefaultScreenDevice()
			.getDefaultConfiguration();

	// set screen recorder configuration
	try {
		screenLogger = new ScreenRecorder(gc, null,
				new Format(MediaTypeKey, MediaType.FILE, MimeTypeKey, MIME_AVI),
				new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey, ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
						CompressorNameKey, ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
						DepthKey, 24, FrameRateKey, Rational.valueOf(15),
						QualityKey, 1.0f,
						KeyFrameIntervalKey, 15 * 60),
				new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey, "black",
						FrameRateKey, Rational.valueOf(30)),
				null, new File(pathToFile));
	} catch (IOException ioe) {
		ioe.printStackTrace();
	} catch (AWTException awte) {
		awte.printStackTrace();
	}
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
private MonteScreenRecorder getScreenRecorder() {
    int frameRate = videoConfiguration.frameRate();

    Format fileFormat = new Format(MediaTypeKey, MediaType.VIDEO, MimeTypeKey, FormatKeys.MIME_AVI);
    Format screenFormat = new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey,
            ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
            CompressorNameKey, ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
            DepthKey, 24, FrameRateKey, Rational.valueOf(frameRate),
            QualityKey, 1.0f,
            KeyFrameIntervalKey, 15 * 60);
    Format mouseFormat = new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey, "black",
            FrameRateKey, Rational.valueOf(frameRate));

    Dimension screenSize = videoConfiguration.screenSize();
    int width = screenSize.width;
    int height = screenSize.height;

    Rectangle captureSize = new Rectangle(0, 0, width, height);

    return MonteScreenRecorderBuilder
            .builder()
            .setGraphicConfig(getGraphicConfig())
            .setRectangle(captureSize)
            .setFileFormat(fileFormat)
            .setScreenFormat(screenFormat)
            .setFolder(new File(videoConfiguration.folder()))
            .setMouseFormat(mouseFormat).build();
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
public ScreenGrabber(ScreenRecorder recorder, long startTime) throws AWTException, IOException {
    this.recorder = recorder;
    this.captureArea = recorder.captureArea;
    this.robot = new Robot(recorder.captureDevice);
    this.mouseFormat = recorder.mouseFormat;
    this.mouseCaptures = recorder.mouseCaptures;
    this.sync = recorder.sync;
    this.cursorImg = recorder.cursorImg;
    this.cursorImgPressed = recorder.cursorImgPressed;
    this.cursorOffset = recorder.cursorOffset;
    this.videoTrack = recorder.videoTrack;
    this.prevScreenCaptureTime = new Rational(startTime, 1000);
    this.startTime = startTime;

    Format screenFormat = recorder.screenFormat;
    if (screenFormat.get(DepthKey, 24) == 24) {
        videoImg = new BufferedImage(this.captureArea.width, this.captureArea.height, BufferedImage.TYPE_INT_RGB);
    } else if (screenFormat.get(DepthKey) == 16) {
        videoImg = new BufferedImage(this.captureArea.width, this.captureArea.height, BufferedImage.TYPE_USHORT_555_RGB);
    } else if (screenFormat.get(DepthKey) == 8) {
        videoImg = new BufferedImage(this.captureArea.width, this.captureArea.height, BufferedImage.TYPE_BYTE_INDEXED, Colors.createMacColors());
    } else {
        throw new IOException("Unsupported color depth " + screenFormat.get(DepthKey));
    }
    videoGraphics = videoImg.createGraphics();
    videoGraphics.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
    videoGraphics.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_SPEED);
    videoGraphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
}
 

import org.monte.media.math.Rational; //导入依赖的package包/类
/**
 * Captures the mouse cursor.
 */
private void grabMouse() throws InterruptedException {
    long now = System.currentTimeMillis();
    if (now > getStopTime()) {
        future.cancel(false);
        return;
    }
    PointerInfo info = MouseInfo.getPointerInfo();
    Point p = info.getLocation();
    if (!info.getDevice().equals(captureDevice)
            || !captureArea.contains(p)) {
        // If the cursor is outside the capture region, we
        // assign Integer.MAX_VALUE to its location.
        // This ensures that all mouse movements outside of the
        // capture region get coallesced. 
        p.setLocation(Integer.MAX_VALUE, Integer.MAX_VALUE);
    }

    // Only create a new capture event if the location has changed
    if (!p.equals(prevCapturedMouseLocation) || mouseWasPressed != mousePressedRecorded) {
        Buffer buf = new Buffer();
        buf.format = format;
        buf.timeStamp = new Rational(now, 1000);
        buf.data = p;
        buf.header = mouseWasPressed;
        mousePressedRecorded = mouseWasPressed;
        mouseCaptures.put(buf);
        prevCapturedMouseLocation.setLocation(p);
    }
    if (!mousePressed) {
        mouseWasPressed = false;
    }
}