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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)

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package org.mp4parser.boxes.sampleentry;

import org.mp4parser.BoxParser;
import org.mp4parser.tools.CastUtils;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeWriter;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;

/**
 * 

4cc = "{@value #TYPE}"

*/ public class Ovc1VisualSampleEntryImpl extends AbstractSampleEntry { public static final String TYPE = "ovc1"; private byte[] vc1Content = new byte[0]; public Ovc1VisualSampleEntryImpl() { super(TYPE); } public byte[] getVc1Content() { return vc1Content; } public void setVc1Content(byte[] vc1Content) { this.vc1Content = vc1Content; } @Override public void parse(ReadableByteChannel dataSource, ByteBuffer header, long contentSize, BoxParser boxParser) throws IOException { ByteBuffer byteBuffer = ByteBuffer.allocate(CastUtils.l2i(contentSize)); dataSource.read(byteBuffer); byteBuffer.position(6); dataReferenceIndex = IsoTypeReader.readUInt16(byteBuffer); vc1Content = new byte[byteBuffer.remaining()]; byteBuffer.get(vc1Content); } @Override public void getBox(WritableByteChannel writableByteChannel) throws IOException { writableByteChannel.write(getHeader()); ByteBuffer byteBuffer = ByteBuffer.allocate(8); byteBuffer.position(6); IsoTypeWriter.writeUInt16(byteBuffer, dataReferenceIndex); writableByteChannel.write((ByteBuffer) byteBuffer.rewind()); writableByteChannel.write(ByteBuffer.wrap(vc1Content)); } @Override public long getSize() { long header = (largeBox || (vc1Content.length + 16) >= (1L << 32)) ? 16 : 8; return header + vc1Content.length + 8; } }




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