com.googlecode.mp4parser.authoring.tracks.mjpeg.OneJpegPerIframe Maven / Gradle / Ivy
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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)
package com.googlecode.mp4parser.authoring.tracks.mjpeg;
import com.coremedia.iso.Hex;
import com.coremedia.iso.boxes.CompositionTimeToSample;
import com.coremedia.iso.boxes.SampleDescriptionBox;
import com.coremedia.iso.boxes.sampleentry.VisualSampleEntry;
import com.googlecode.mp4parser.authoring.*;
import com.googlecode.mp4parser.boxes.mp4.ESDescriptorBox;
import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.ESDescriptor;
import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.ObjectDescriptorFactory;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.WritableByteChannel;
import java.util.AbstractList;
import java.util.Arrays;
import java.util.List;
/**
* Created by sannies on 13.02.2015.
*/
public class OneJpegPerIframe extends AbstractTrack {
File[] jpegs;
TrackMetaData trackMetaData = new TrackMetaData();
long[] sampleDurations;
SampleDescriptionBox stsd;
long[] syncSamples;
public OneJpegPerIframe(String name, File[] jpegs, Track alignTo) throws IOException {
super(name);
this.jpegs = jpegs;
if (alignTo.getSyncSamples().length != jpegs.length) {
throw new RuntimeException("Number of sync samples doesn't match the number of stills (" + alignTo.getSyncSamples().length + " vs. " + jpegs.length + ")");
}
BufferedImage a = ImageIO.read(jpegs[0]);
trackMetaData.setWidth(a.getWidth());
trackMetaData.setHeight(a.getHeight());
trackMetaData.setTimescale(alignTo.getTrackMetaData().getTimescale());
long[] sampleDurationsToiAlignTo = alignTo.getSampleDurations();
long[] syncSamples = alignTo.getSyncSamples();
int currentSyncSample = 1;
long duration = 0;
sampleDurations = new long[syncSamples.length];
for (int i = 1; i < sampleDurationsToiAlignTo.length; i++) {
if (currentSyncSample < syncSamples.length && i == syncSamples[currentSyncSample]) {
sampleDurations[currentSyncSample - 1] = duration;
duration = 0;
currentSyncSample++;
}
duration += sampleDurationsToiAlignTo[i];
}
sampleDurations[sampleDurations.length - 1] = duration;
stsd = new SampleDescriptionBox();
VisualSampleEntry mp4v = new VisualSampleEntry("mp4v");
stsd.addBox(mp4v);
ESDescriptorBox esds = new ESDescriptorBox();
esds.setData(ByteBuffer.wrap(Hex.decodeHex("038080801B000100048080800D6C11000000000A1CB4000A1CB4068080800102")));
esds.setEsDescriptor((ESDescriptor) ObjectDescriptorFactory.createFrom(-1, ByteBuffer.wrap(Hex.decodeHex("038080801B000100048080800D6C11000000000A1CB4000A1CB4068080800102"))));
mp4v.addBox(esds);
this.syncSamples = new long[jpegs.length];
for (int i = 0; i < this.syncSamples.length; i++) {
this.syncSamples[i] = i + 1;
}
double earliestTrackPresentationTime = 0;
boolean acceptDwell = true;
boolean acceptEdit = true;
for (Edit edit : alignTo.getEdits()) {
if (edit.getMediaTime() == -1 && !acceptDwell) {
throw new RuntimeException("Cannot accept edit list for processing (1)");
}
if (edit.getMediaTime() >= 0 && !acceptEdit) {
throw new RuntimeException("Cannot accept edit list for processing (2)");
}
if (edit.getMediaTime() == -1) {
earliestTrackPresentationTime += edit.getSegmentDuration();
} else /* if edit.getMediaTime() >= 0 */ {
earliestTrackPresentationTime -= (double) edit.getMediaTime() / edit.getTimeScale();
acceptEdit = false;
acceptDwell = false;
}
}
if (alignTo.getCompositionTimeEntries() != null && alignTo.getCompositionTimeEntries().size() > 0) {
long currentTime = 0;
int[] ptss = CompositionTimeToSample.blowupCompositionTimes(alignTo.getCompositionTimeEntries());
for (int j = 0; j < ptss.length && j < 50; j++) {
ptss[j] += currentTime;
currentTime += alignTo.getSampleDurations()[j];
}
Arrays.sort(ptss);
earliestTrackPresentationTime += (double) ptss[0] / alignTo.getTrackMetaData().getTimescale();
}
if (earliestTrackPresentationTime < 0) {
getEdits().add(new Edit((long) (-earliestTrackPresentationTime * getTrackMetaData().getTimescale()), getTrackMetaData().getTimescale(), 1.0, (double) getDuration() / getTrackMetaData().getTimescale()));
} else if (earliestTrackPresentationTime > 0) {
getEdits().add(new Edit(-1, getTrackMetaData().getTimescale(), 1.0, earliestTrackPresentationTime));
getEdits().add(new Edit(0, getTrackMetaData().getTimescale(), 1.0, (double) getDuration() / getTrackMetaData().getTimescale()));
}
}
public SampleDescriptionBox getSampleDescriptionBox() {
return stsd;
}
public long[] getSampleDurations() {
return sampleDurations;
}
public TrackMetaData getTrackMetaData() {
return trackMetaData;
}
public String getHandler() {
return "vide";
}
@Override
public long[] getSyncSamples() {
return syncSamples;
}
public List getSamples() {
return new AbstractList() {
@Override
public int size() {
return jpegs.length;
}
@Override
public Sample get(final int index) {
return new Sample() {
ByteBuffer sample = null;
public void writeTo(WritableByteChannel channel) throws IOException {
RandomAccessFile raf = new RandomAccessFile(jpegs[index], "r");
raf.getChannel().transferTo(0, raf.length(), channel);
raf.close();
}
public long getSize() {
return jpegs[index].length();
}
public ByteBuffer asByteBuffer() {
if (sample == null) {
try {
RandomAccessFile raf = new RandomAccessFile(jpegs[index], "r");
sample = raf.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, raf.length());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return sample;
}
};
}
};
}
public void close() throws IOException {
}
}