ru.sbtqa.monte.media.seq.SEQTrack Maven / Gradle / Ivy

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/* @(#)SEQTrack.java
 * Copyright © 2011 Werner Randelshofer, Switzerland.
 * 
 * You may not use, copy or modify this file, except in compliance onlyWith the
 * license agreement you entered into onlyWith Werner Randelshofer.
 * For details see accompanying license terms.
 */
package ru.sbtqa.monte.media.seq;

import ru.sbtqa.monte.media.Buffer;
import static ru.sbtqa.monte.media.BufferFlag.*;
import ru.sbtqa.monte.media.Format;
import ru.sbtqa.monte.media.FormatKeys.MediaType;
import ru.sbtqa.monte.media.Track;
import static ru.sbtqa.monte.media.VideoFormatKeys.*;
import ru.sbtqa.monte.media.image.BitmapImage;
import ru.sbtqa.monte.media.math.Rational;

/**
 * {@code SEQTrack}.
 *
 * @author Werner Randelshofer
 * @version 1.0 2011-02-20 Created.
 */
public class SEQTrack implements Track {

    private SEQDemultiplexer demux;
    private long position;
    private Format outputFormat = new Format(MediaTypeKey, MediaType.VIDEO, MimeTypeKey, MIME_JAVA, EncodingKey, ENCODING_BUFFERED_IMAGE);

    public SEQTrack(SEQDemultiplexer demux) {
        this.demux = demux;
    }

    @Override
    public long getSampleCount() {
        return demux.getFrameCount();
    }

    @Override
    public void setPosition(long pos) {
        this.position = pos;
    }

    @Override
    public long getPosition() {
        return position;
    }

    @Override
    public void read(Buffer buf) {
        if (position < demux.getFrameCount()) {
            buf.setFlagsTo(KEYFRAME);
            if (!(buf.data instanceof BitmapImage)) {
                buf.data = demux.createCompatibleBitmap();
            }
            demux.readFrame((int) position, (BitmapImage) buf.data);
            buf.sampleDuration = new Rational(demux.getDuration((int) position), demux.getJiffies());
            buf.format = outputFormat;
            position++;
        } else {
            buf.setFlagsTo(DISCARD);
        }
    }
}