| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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.apache.poi.hslf.record; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| |
| import org.apache.poi.util.LittleEndian; |
| |
| import static org.apache.logging.log4j.util.Unbox.box; |
| |
| /** |
| * A container record that specifies information about external video data. |
| * |
| * @author Yegor Kozlov |
| */ |
| public final class ExVideoContainer extends RecordContainer { |
| private byte[] _header; |
| |
| // Links to our more interesting children |
| private ExMediaAtom mediaAtom; |
| //the UNC or local path to a video file. |
| private CString pathAtom; |
| |
| /** |
| * Set things up, and find our more interesting children |
| */ |
| protected ExVideoContainer(byte[] source, int start, int len) { |
| // Grab the header |
| _header = Arrays.copyOfRange(source, start, start+8); |
| |
| // Find our children |
| _children = Record.findChildRecords(source,start+8,len-8); |
| findInterestingChildren(); |
| } |
| |
| /** |
| * Go through our child records, picking out the ones that are |
| * interesting, and saving those for use by the easy helper |
| * methods. |
| */ |
| private void findInterestingChildren() { |
| |
| // First child should be the ExMediaAtom |
| Record child = _children[0]; |
| if(child instanceof ExMediaAtom) { |
| mediaAtom = (ExMediaAtom) child; |
| } else { |
| LOG.atError().log("First child record wasn't a ExMediaAtom, was of type {}", box(child.getRecordType())); |
| } |
| child = _children[1]; |
| if(child instanceof CString) { |
| pathAtom = (CString) child; |
| } else { |
| LOG.atError().log("Second child record wasn't a CString, was of type {}", box(child.getRecordType())); |
| } |
| } |
| |
| /** |
| * Create a new ExVideoContainer, with blank fields |
| */ |
| public ExVideoContainer() { |
| // Setup our header block |
| _header = new byte[8]; |
| _header[0] = 0x0f; // We are a container record |
| LittleEndian.putShort(_header, 2, (short)getRecordType()); |
| |
| _children = new org.apache.poi.hslf.record.Record[2]; |
| _children[0] = mediaAtom = new ExMediaAtom(); |
| _children[1] = pathAtom = new CString(); |
| } |
| |
| /** |
| * We are of type 4103 |
| */ |
| public long getRecordType() { return RecordTypes.ExVideoContainer.typeID; } |
| |
| /** |
| * Write the contents of the record back, so it can be written |
| * to disk |
| */ |
| public void writeOut(OutputStream out) throws IOException { |
| writeOut(_header[0],_header[1],getRecordType(),_children,out); |
| } |
| |
| /** |
| * Returns the ExMediaAtom of this link |
| */ |
| public ExMediaAtom getExMediaAtom() { return mediaAtom; } |
| |
| /** |
| * Returns the Path Atom (CString) of this link |
| */ |
| public CString getPathAtom() { return pathAtom; } |
| |
| } |