/*
* 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 org.mp4parser.boxes.sampleentry;
import org.mp4parser.BoxParser;
import org.mp4parser.Container;
import org.mp4parser.boxes.iso14496.part12.ProtectionSchemeInformationBox;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeWriter;
import org.mp4parser.tools.Utf8;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;
/**
* <h1>4cc = "{@value #TYPE1}" || "{@value #TYPE2}" || "{@value #TYPE3}" || "{@value #TYPE4}" || "{@value #TYPE5}"</h1>
* Contains information common to all visual tracks.
* <pre>
* class VisualSampleEntry(codingname) extends AbstractSampleEntry (codingname){
* unsigned int(16) pre_defined = 0;
* const unsigned int(16) reserved = 0;
* unsigned int(32)[3] pre_defined = 0;
* unsigned int(16) width;
* unsigned int(16) height;
* template unsigned int(32) horizresolution = 0x00480000; // 72 dpi
* template unsigned int(32) vertresolution = 0x00480000; // 72 dpi
* const unsigned int(32) reserved = 0;
* template unsigned int(16) frame_count = 1;
* string[32] compressorname;
* template unsigned int(16) depth = 0x0018;
* int(16) pre_defined = -1;
* }
* </pre>
* <br>
* Format-specific information is appened as boxes after the data described in ISO/IEC 14496-12 chapter 8.16.2.
*/
public final class VisualSampleEntry extends AbstractSampleEntry implements Container {
public static final String TYPE1 = "mp4v";
public static final String TYPE2 = "s263";
public static final String TYPE3 = "avc1";
public static final String TYPE4 = "avc3";
public static final String TYPE5 = "drmi";
public static final String TYPE6 = "hvc1";
public static final String TYPE7 = "hev1";
/**
* Identifier for an encrypted video track.
*
* @see ProtectionSchemeInformationBox
*/
public static final String TYPE_ENCRYPTED = "encv";
private int width;
private int height;
private double horizresolution = 72;
private double vertresolution = 72;
private int frameCount = 1;
private String compressorname = "";
private int depth = 24;
private long[] predefined = new long[3];
public VisualSampleEntry() {
super(TYPE3);
}
public VisualSampleEntry(String type) {
super(type);
}
public void setType(String type) {
this.type = type;
}
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
public double getHorizresolution() {
return horizresolution;
}
public void setHorizresolution(double horizresolution) {
this.horizresolution = horizresolution;
}
public double getVertresolution() {
return vertresolution;
}
public void setVertresolution(double vertresolution) {
this.vertresolution = vertresolution;
}
public int getFrameCount() {
return frameCount;
}
public void setFrameCount(int frameCount) {
this.frameCount = frameCount;
}
public String getCompressorname() {
return compressorname;
}
public void setCompressorname(String compressorname) {
this.compressorname = compressorname;
}
public int getDepth() {
return depth;
}
public void setDepth(int depth) {
this.depth = depth;
}
@Override
public void parse(final ReadableByteChannel dataSource, ByteBuffer header, long contentSize, BoxParser boxParser) throws IOException {
ByteBuffer content = ByteBuffer.allocate(78);
dataSource.read(content);
content.position(6);
dataReferenceIndex = IsoTypeReader.readUInt16(content);
long tmp = IsoTypeReader.readUInt16(content);
assert 0 == tmp : "reserved byte not 0";
tmp = IsoTypeReader.readUInt16(content);
assert 0 == tmp : "reserved byte not 0";
predefined[0] = IsoTypeReader.readUInt32(content); // should be zero
predefined[1] = IsoTypeReader.readUInt32(content); // should be zero
predefined[2] = IsoTypeReader.readUInt32(content); // should be zero
width = IsoTypeReader.readUInt16(content);
height = IsoTypeReader.readUInt16(content);
horizresolution = IsoTypeReader.readFixedPoint1616(content);
vertresolution = IsoTypeReader.readFixedPoint1616(content);
tmp = IsoTypeReader.readUInt32(content);
assert 0 == tmp : "reserved byte not 0";
frameCount = IsoTypeReader.readUInt16(content);
int compressornameDisplayAbleData = IsoTypeReader.readUInt8(content);
if (compressornameDisplayAbleData > 31) {
//System.out.println("invalid compressor name displayable data: " + compressornameDisplayAbleData);
compressornameDisplayAbleData = 31;
}
byte[] bytes = new byte[compressornameDisplayAbleData];
content.get(bytes);
compressorname = Utf8.convert(bytes);
if (compressornameDisplayAbleData < 31) {
byte[] zeros = new byte[31 - compressornameDisplayAbleData];
content.get(zeros);
//assert Mp4Arrays.equals(zeros, new byte[zeros.length]) : "The compressor name length was not filled up with zeros";
}
depth = IsoTypeReader.readUInt16(content);
tmp = IsoTypeReader.readUInt16(content);
assert 0xFFFF == tmp;
initContainer(dataSource, contentSize - 78, boxParser);
}
@Override
public void getBox(WritableByteChannel writableByteChannel) throws IOException {
writableByteChannel.write(getHeader());
ByteBuffer byteBuffer = ByteBuffer.allocate(78);
byteBuffer.position(6);
IsoTypeWriter.writeUInt16(byteBuffer, dataReferenceIndex);
IsoTypeWriter.writeUInt16(byteBuffer, 0);
IsoTypeWriter.writeUInt16(byteBuffer, 0);
IsoTypeWriter.writeUInt32(byteBuffer, predefined[0]);
IsoTypeWriter.writeUInt32(byteBuffer, predefined[1]);
IsoTypeWriter.writeUInt32(byteBuffer, predefined[2]);
IsoTypeWriter.writeUInt16(byteBuffer, getWidth());
IsoTypeWriter.writeUInt16(byteBuffer, getHeight());
IsoTypeWriter.writeFixedPoint1616(byteBuffer, getHorizresolution());
IsoTypeWriter.writeFixedPoint1616(byteBuffer, getVertresolution());
IsoTypeWriter.writeUInt32(byteBuffer, 0);
IsoTypeWriter.writeUInt16(byteBuffer, getFrameCount());
IsoTypeWriter.writeUInt8(byteBuffer, Utf8.utf8StringLengthInBytes(getCompressorname()));
byteBuffer.put(Utf8.convert(getCompressorname()));
int a = Utf8.utf8StringLengthInBytes(getCompressorname());
while (a < 31) {
a++;
byteBuffer.put((byte) 0);
}
IsoTypeWriter.writeUInt16(byteBuffer, getDepth());
IsoTypeWriter.writeUInt16(byteBuffer, 0xFFFF);
writableByteChannel.write((ByteBuffer) byteBuffer.rewind());
writeContainer(writableByteChannel);
}
@Override
public long getSize() {
long s = getContainerSize();
long t = 78;
return s + t + ((largeBox || (s + t + 8) >= (1L << 32)) ? 16 : 8);
}
}