Add support for iTunes/iPod extension to ISO14496

git-svn-id: http://php-reader.googlecode.com/svn/trunk@87 51a70ab9-7547-0410-9469-37e369ee0574

src/ISO14496.php

@@ -67,6 +67,12 @@ require_once("ISO14496/Box.php");
  */
 class ISO14496 extends ISO14496_Box
 {
+  /**
+   * Constructs the ISO14496 class with given file.
+   *
+   * @param string $filename The path to the file or file descriptor of an
+   *                         opened file.
+   */
   public function __construct($filename)
   {
     $this->_reader = new Reader($filename);

src/ISO14496/Box/ILST.php

@@ -0,0 +1,162 @@
+<?php
+/**
+ * PHP Reader Library
+ *
+ * Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  - Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  - Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  - Neither the name of the project workgroup nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package    php-reader
+ * @subpackage ISO 14496
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Id$
+ */
+
+/**#@+ @ignore */
+require_once("ISO14496/Box.php");
+/**#@-*/
+
+/**
+ * A container box for all the iTunes/iPod specific boxes.
+ *
+ * @package    php-reader
+ * @subpackage ISO 14496
+ * @author     Sven Vollbehr <svollbehr@gmail.com>
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Rev$
+ * @since      iTunes/iPod specific
+ */
+final class ISO14496_Box_ILST extends ISO14496_Box
+{
+  private $_data = array();
+  
+  /**
+   * Constructs the class with given parameters and reads box related data from
+   * the ISO Base Media file.
+   *
+   * @param Reader $reader The reader object.
+   */
+  public function __construct($reader)
+  {
+    parent::__construct($reader);
+    $this->setContainer(true);
+    $this->constructBoxes("ISO14496_Box_ILST_Container");
+  }
+}
+
+/**
+ * Generic iTunes/iPod DATA Box container.
+ *
+ * @package    php-reader
+ * @subpackage ISO 14496
+ * @author     Sven Vollbehr <svollbehr@gmail.com>
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Rev$
+ * @since      iTunes/iPod specific
+ * @ignore
+ */
+final class ISO14496_Box_ILST_Container extends ISO14496_Box
+{
+  public function __construct($reader)
+  {
+    parent::__construct($reader);
+    $this->setContainer(true);
+    $this->constructBoxes();
+  }
+}
+
+/**#@+ @ignore */
+require_once("ISO14496/Box/Full.php");
+/**#@-*/
+
+/**
+ * A box that contains data for iTunes/iPod specific boxes.
+ *
+ * @package    php-reader
+ * @subpackage ISO 14496
+ * @author     Sven Vollbehr <svollbehr@gmail.com>
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Rev$
+ * @since      iTunes/iPod specific
+ */
+final class ISO14496_Box_DATA extends ISO14496_Box_Full
+{
+  /** @var mixed */
+  private $_value;
+  
+  /** A flag to indicate that the data is an unsigned 8-bit integer. */
+  const INTEGER = 0x0;
+  
+  /**
+   * A flag to indicate that the data is an unsigned 8-bit integer. Different
+   * value used in old versions of iTunes.
+   */
+  const INTEGER_OLD_STYLE = 0x15;
+  
+  /** A flag to indicate that the data is a string. */
+  const STRING = 0x1;
+  
+  /** A flag to indicate that the data is the contents of an JPEG image. */
+  const JPEG = 0xd;
+  
+  /** A flag to indicate that the data is the contents of a PNG image. */
+  const PNG = 0xe;
+  
+  /**
+   * Constructs the class with given parameters and reads box related data from
+   * the ISO Base Media file.
+   *
+   * @param Reader $reader The reader object.
+   */
+  public function __construct($reader)
+  {
+    parent::__construct($reader);
+    
+    $this->_reader->skip(4);
+    $data = $this->_reader->read
+      ($this->_offset + $this->_size - $this->_reader->getOffset());
+    switch ($this->getFlags()) {
+    case self::INTEGER:
+    case self::INTEGER_OLD_STYLE:
+      for ($i = 0;  $i < strlen($data); $i++)
+        $this->_value .= ord($data[$i]);
+      break;
+    case self::STRING:
+    default:
+      $this->_value = $data;
+    }
+  }
+  
+  /**
+   * Returns the value this box contains.
+   * 
+   * @return mixed
+   */
+  public function getValue() { return $this->_value; }
+}