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/*
* 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.sampleentry;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.coremedia.iso.Utf8;
import com.coremedia.iso.boxes.Box;
import com.coremedia.iso.boxes.ContainerBox;
import java.nio.ByteBuffer;
/**
* Contains information common to all visual tracks.
* <code>
* <pre>
* class VisualSampleEntry(codingname) extends SampleEntry (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;
* }<br>
* </pre>
* </code>
* <p/>
* Format-specific informationis appened as boxes after the data described in ISO/IEC 14496-12 chapter 8.16.2.
*/
public class VisualSampleEntry extends SampleEntry implements ContainerBox {
public static final String TYPE1 = "mp4v";
public static final String TYPE2 = "s263";
public static final String TYPE3 = "avc1";
/**
* Identifier for an encrypted video track.
*
* @see com.coremedia.iso.boxes.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(String type) {
super(type);
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
public double getHorizresolution() {
return horizresolution;
}
public double getVertresolution() {
return vertresolution;
}
public int getFrameCount() {
return frameCount;
}
public String getCompressorname() {
return compressorname;
}
public int getDepth() {
return depth;
}
public void setCompressorname(String compressorname) {
this.compressorname = compressorname;
}
public void setWidth(int width) {
this.width = width;
}
public void setHeight(int height) {
this.height = height;
}
public void setHorizresolution(double horizresolution) {
this.horizresolution = horizresolution;
}
public void setVertresolution(double vertresolution) {
this.vertresolution = vertresolution;
}
public void setFrameCount(int frameCount) {
this.frameCount = frameCount;
}
public void setDepth(int depth) {
this.depth = depth;
}
@Override
public void _parseDetails(ByteBuffer content) {
_parseReservedAndDataReferenceIndex(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 Arrays.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;
_parseChildBoxes(content);
}
protected long getContentSize() {
long contentSize = 78;
for (Box boxe : boxes) {
contentSize += boxe.getSize();
}
return contentSize;
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
_writeReservedAndDataReferenceIndex(byteBuffer);
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.writeFixedPont1616(byteBuffer, getHorizresolution());
IsoTypeWriter.writeFixedPont1616(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);
_writeChildBoxes(byteBuffer);
}
}
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