| /* |
| * 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.BoxParser; |
| import com.coremedia.iso.IsoTypeReader; |
| import com.coremedia.iso.IsoTypeWriter; |
| import com.googlecode.mp4parser.AbstractBox; |
| import com.coremedia.iso.boxes.Box; |
| import com.coremedia.iso.boxes.ContainerBox; |
| import com.googlecode.mp4parser.util.ByteBufferByteChannel; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.Channels; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.channels.WritableByteChannel; |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * Abstract base class for all sample entries. |
| * |
| * @see com.coremedia.iso.boxes.sampleentry.AudioSampleEntry |
| * @see com.coremedia.iso.boxes.sampleentry.VisualSampleEntry |
| * @see com.coremedia.iso.boxes.sampleentry.TextSampleEntry |
| */ |
| public abstract class SampleEntry extends AbstractBox implements ContainerBox { |
| |
| |
| private int dataReferenceIndex = 1; |
| protected List<Box> boxes = new LinkedList<Box>(); |
| private BoxParser boxParser; |
| |
| |
| protected SampleEntry(String type) { |
| super(type); |
| } |
| |
| public void setType(String type) { |
| this.type = type; |
| } |
| |
| public int getDataReferenceIndex() { |
| return dataReferenceIndex; |
| } |
| |
| public void setDataReferenceIndex(int dataReferenceIndex) { |
| this.dataReferenceIndex = dataReferenceIndex; |
| } |
| |
| public void setBoxes(List<Box> boxes) { |
| this.boxes = new LinkedList<Box>(boxes); |
| } |
| |
| public void addBox(Box b) { |
| b.setParent(this); |
| boxes.add(b); |
| } |
| |
| public boolean removeBox(Box b) { |
| b.setParent(this); |
| return boxes.remove(b); |
| } |
| |
| public List<Box> getBoxes() { |
| return boxes; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public <T extends Box> List<T> getBoxes(Class<T> clazz, boolean recursive) { |
| List<T> boxesToBeReturned = new ArrayList<T>(2); |
| for (Box boxe : boxes) { //clazz.isInstance(boxe) / clazz == boxe.getClass()? |
| if (clazz == boxe.getClass()) { |
| boxesToBeReturned.add((T) boxe); |
| } |
| |
| if (recursive && boxe instanceof ContainerBox) { |
| boxesToBeReturned.addAll(((ContainerBox) boxe).getBoxes(clazz, recursive)); |
| } |
| } |
| // Optimize here! Spare object creation work on arrays directly! System.arrayCopy |
| return boxesToBeReturned; |
| //return (T[]) boxesToBeReturned.toArray(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public <T extends Box> List<T> getBoxes(Class<T> clazz) { |
| return getBoxes(clazz, false); |
| } |
| |
| @Override |
| public void parse(ReadableByteChannel readableByteChannel, ByteBuffer header, long contentSize, BoxParser boxParser) throws IOException { |
| super.parse(readableByteChannel, header, contentSize, boxParser); |
| this.boxParser = boxParser; |
| } |
| |
| |
| public void _parseReservedAndDataReferenceIndex(ByteBuffer content) { |
| content.get(new byte[6]); // ignore 6 reserved bytes; |
| dataReferenceIndex = IsoTypeReader.readUInt16(content); |
| } |
| |
| public void _parseChildBoxes(ByteBuffer content) { |
| while (content.remaining() > 8) { |
| try { |
| boxes.add(boxParser.parseBox(new ByteBufferByteChannel(content), this)); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| |
| } |
| setDeadBytes(content.slice()); |
| } |
| |
| public void _writeReservedAndDataReferenceIndex(ByteBuffer bb) { |
| bb.put(new byte[6]); |
| IsoTypeWriter.writeUInt16(bb, dataReferenceIndex); |
| } |
| |
| public void _writeChildBoxes(ByteBuffer bb) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| WritableByteChannel wbc = Channels.newChannel(baos); |
| try { |
| for (Box box : boxes) { |
| box.getBox(wbc); |
| } |
| wbc.close(); |
| } catch (IOException e) { |
| throw new RuntimeException("Cannot happen. Everything should be in memory and therefore no exceptions."); |
| } |
| bb.put(baos.toByteArray()); |
| } |
| |
| public long getNumOfBytesToFirstChild() { |
| long sizeOfChildren = 0; |
| for (Box box : boxes) { |
| sizeOfChildren += box.getSize(); |
| } |
| return getSize() - sizeOfChildren; |
| } |
| |
| } |