com.coremedia.iso.boxes.ItemProtectionBox Maven / Gradle / Ivy
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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)
/*
* Copyright 2008 CoreMedia AG, Hamburg
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.coremedia.iso.boxes;
import com.coremedia.iso.BoxParser;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.AbstractContainerBox;
import java.io.IOException;
import java.nio.ByteBuffer;
import com.googlecode.mp4parser.DataSource;
import java.nio.channels.WritableByteChannel;
/**
* 4cc = "{@value #TYPE}"
* The Item Protection Box provides an array of item protection information, for use by the Item Information Box.
*
* @see com.coremedia.iso.boxes.ItemProtectionBox
*/
public class ItemProtectionBox extends AbstractContainerBox implements FullBox {
public static final String TYPE = "ipro";
public ItemProtectionBox() {
super(TYPE);
}
private int version;
private int flags;
public int getVersion() {
return version;
}
public void setVersion(int version) {
this.version = version;
}
public int getFlags() {
return flags;
}
public void setFlags(int flags) {
this.flags = flags;
}
public SchemeInformationBox getItemProtectionScheme() {
if (!getBoxes(SchemeInformationBox.class).isEmpty()) {
return getBoxes(SchemeInformationBox.class).get(0);
} else {
return null;
}
}
@Override
public void parse(DataSource dataSource, ByteBuffer header, long contentSize, BoxParser boxParser) throws IOException {
ByteBuffer versionFlagNumOfChildBoxes = ByteBuffer.allocate(6);
dataSource.read(versionFlagNumOfChildBoxes);
versionFlagNumOfChildBoxes.rewind();
version = IsoTypeReader.readUInt8(versionFlagNumOfChildBoxes);
flags = IsoTypeReader.readUInt24(versionFlagNumOfChildBoxes);
// number of child boxes is not required
initContainer(dataSource, contentSize - 6, boxParser);
}
@Override
public void getBox(WritableByteChannel writableByteChannel) throws IOException {
writableByteChannel.write(getHeader());
ByteBuffer versionFlagNumOfChildBoxes = ByteBuffer.allocate(6);
IsoTypeWriter.writeUInt8(versionFlagNumOfChildBoxes, version);
IsoTypeWriter.writeUInt24(versionFlagNumOfChildBoxes, flags);
IsoTypeWriter.writeUInt16(versionFlagNumOfChildBoxes, getBoxes().size());
writableByteChannel.write((ByteBuffer) versionFlagNumOfChildBoxes.rewind());
writeContainer(writableByteChannel);
}
@Override
public long getSize() {
long s = getContainerSize();
long t = 6; // bytes to container start
return s + t + ((largeBox || (s + t) >= (1L << 32)) ? 16 : 8);
}
}