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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;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.AbstractFullBox;
import java.nio.ByteBuffer;
import static com.googlecode.mp4parser.util.CastUtils.l2i;
/**
* This box containes the sample count and a table giving the size in bytes of each sample.
* Defined in ISO/IEC 14496-12.
*/
public class SampleSizeBox extends AbstractFullBox {
private long sampleSize;
private long[] sampleSizes = new long[0];
public static final String TYPE = "stsz";
int sampleCount;
public SampleSizeBox() {
super(TYPE);
}
/**
* Returns the field sample size.
* If sampleSize > 0 every sample has the same size.
* If sampleSize == 0 the samples have different size as stated in the sampleSizes field.
*
* @return the sampleSize field
*/
public long getSampleSize() {
return sampleSize;
}
public void setSampleSize(long sampleSize) {
this.sampleSize = sampleSize;
}
public long getSampleSizeAtIndex(int index) {
if (sampleSize > 0) {
return sampleSize;
} else {
return sampleSizes[index];
}
}
public long getSampleCount() {
if (sampleSize > 0) {
return sampleCount;
} else {
return sampleSizes.length;
}
}
public long[] getSampleSizes() {
return sampleSizes;
}
public void setSampleSizes(long[] sampleSizes) {
this.sampleSizes = sampleSizes;
}
protected long getContentSize() {
return 12 + (sampleSize == 0 ? sampleSizes.length * 4 : 0);
}
@Override
public void _parseDetails(ByteBuffer content) {
parseVersionAndFlags(content);
sampleSize = IsoTypeReader.readUInt32(content);
sampleCount = l2i(IsoTypeReader.readUInt32(content));
if (sampleSize == 0) {
sampleSizes = new long[(int) sampleCount];
for (int i = 0; i < sampleCount; i++) {
sampleSizes[i] = IsoTypeReader.readUInt32(content);
}
}
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
writeVersionAndFlags(byteBuffer);
IsoTypeWriter.writeUInt32(byteBuffer, sampleSize);
if (sampleSize == 0) {
IsoTypeWriter.writeUInt32(byteBuffer, sampleSizes.length);
for (long sampleSize1 : sampleSizes) {
IsoTypeWriter.writeUInt32(byteBuffer, sampleSize1);
}
} else {
IsoTypeWriter.writeUInt32(byteBuffer, sampleCount);
}
}
public String toString() {
return "SampleSizeBox[sampleSize=" + getSampleSize() + ";sampleCount=" + getSampleCount() + "]";
}
}
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