| /* |
| * 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; |
| |
| import com.googlecode.mp4parser.AbstractContainerBox; |
| import com.coremedia.iso.boxes.Box; |
| import com.coremedia.iso.boxes.MovieBox; |
| import com.googlecode.mp4parser.annotations.DoNotParseDetail; |
| |
| import java.io.*; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.channels.WritableByteChannel; |
| |
| /** |
| * The most upper container for ISO Boxes. It is a container box that is a file. |
| * Uses IsoBufferWrapper to access the underlying file. |
| */ |
| @DoNotParseDetail |
| public class IsoFile extends AbstractContainerBox implements Closeable { |
| protected BoxParser boxParser = new PropertyBoxParserImpl(); |
| ReadableByteChannel byteChannel; |
| |
| public IsoFile() { |
| super(""); |
| } |
| |
| public IsoFile(File f) throws IOException { |
| super(""); |
| this.byteChannel = new FileInputStream(f).getChannel(); |
| boxParser = createBoxParser(); |
| parse(); |
| } |
| |
| public IsoFile(ReadableByteChannel byteChannel) throws IOException { |
| super(""); |
| this.byteChannel = byteChannel; |
| boxParser = createBoxParser(); |
| parse(); |
| } |
| |
| public IsoFile(ReadableByteChannel byteChannel, BoxParser boxParser) throws IOException { |
| super(""); |
| this.byteChannel = byteChannel; |
| this.boxParser = boxParser; |
| parse(); |
| |
| |
| } |
| |
| protected BoxParser createBoxParser() { |
| return new PropertyBoxParserImpl(); |
| } |
| |
| |
| @Override |
| public void _parseDetails(ByteBuffer content) { |
| // there are no details to parse we should be just file |
| } |
| |
| public void parse(ReadableByteChannel inFC, ByteBuffer header, long contentSize, AbstractBoxParser abstractBoxParser) throws IOException { |
| throw new IOException("This method is not meant to be called. Use #parse() directly."); |
| } |
| |
| private void parse() throws IOException { |
| |
| boolean done = false; |
| while (!done) { |
| try { |
| Box box = boxParser.parseBox(byteChannel, this); |
| if (box != null) { |
| // System.err.println(box.getType()); |
| boxes.add(box); |
| } else { |
| done = true; |
| } |
| } catch (EOFException e) { |
| done = true; |
| } |
| } |
| } |
| |
| @DoNotParseDetail |
| public String toString() { |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append("IsoFile["); |
| if (boxes == null) { |
| buffer.append("unparsed"); |
| } else { |
| for (int i = 0; i < boxes.size(); i++) { |
| if (i > 0) { |
| buffer.append(";"); |
| } |
| buffer.append(boxes.get(i).toString()); |
| } |
| } |
| buffer.append("]"); |
| return buffer.toString(); |
| } |
| |
| @DoNotParseDetail |
| public static byte[] fourCCtoBytes(String fourCC) { |
| byte[] result = new byte[4]; |
| if (fourCC != null) { |
| for (int i = 0; i < Math.min(4, fourCC.length()); i++) { |
| result[i] = (byte) fourCC.charAt(i); |
| } |
| } |
| return result; |
| } |
| |
| @DoNotParseDetail |
| public static String bytesToFourCC(byte[] type) { |
| byte[] result = new byte[]{0, 0, 0, 0}; |
| if (type != null) { |
| System.arraycopy(type, 0, result, 0, Math.min(type.length, 4)); |
| } |
| try { |
| return new String(result, "ISO-8859-1"); |
| } catch (UnsupportedEncodingException e) { |
| throw new Error("Required character encoding is missing", e); |
| } |
| } |
| |
| |
| @Override |
| public long getNumOfBytesToFirstChild() { |
| return 0; |
| } |
| |
| @Override |
| public long getSize() { |
| long size = 0; |
| for (Box box : boxes) { |
| size += box.getSize(); |
| } |
| return size; |
| } |
| |
| @Override |
| public IsoFile getIsoFile() { |
| return this; |
| } |
| |
| |
| /** |
| * Shortcut to get the MovieBox since it is often needed and present in |
| * nearly all ISO 14496 files (at least if they are derived from MP4 ). |
| * |
| * @return the MovieBox or <code>null</code> |
| */ |
| @DoNotParseDetail |
| public MovieBox getMovieBox() { |
| for (Box box : boxes) { |
| if (box instanceof MovieBox) { |
| return (MovieBox) box; |
| } |
| } |
| return null; |
| } |
| |
| public void getBox(WritableByteChannel os) throws IOException { |
| for (Box box : boxes) { |
| |
| if (os instanceof FileChannel) { |
| long startPos = ((FileChannel) os).position(); |
| box.getBox(os); |
| long size = ((FileChannel) os).position() - startPos; |
| assert size == box.getSize(); |
| } else { |
| box.getBox(os); |
| } |
| |
| } |
| } |
| |
| public void close() throws IOException { |
| this.byteChannel.close(); |
| } |
| } |