Add support for ISO base media file format

git-svn-id: http://php-reader.googlecode.com/svn/trunk@85 51a70ab9-7547-0410-9469-37e369ee0574
2008-04-23 20:21:36 +00:00
parent 3191721e15
commit 42d91f7e33
74 changed files with 7032 additions and 0 deletions
--- a/src/ISO14496/Box/MFRO.php
+++ b/src/ISO14496/Box/MFRO.php
@@ -0,0 +1,85 @@
+<?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/Full.php");
+/**#@-*/
+
+/**
+ * The <i>Movie Fragment Random Access Offset Box</i> provides a copy of the
+ * length field from the enclosing {@link ISO14496_Box_MFRA Movie Fragment
+ * Random Access Box}. It is placed last within that box, so that the size field
+ * is also last in the enclosing Movie Fragment Random Access Box. When the
+ * Movie Fragment Random Access Box is also last in the file this permits its
+ * easy location. The size field here must be correct. However, neither the
+ * presence of the Movie Fragment Random Access Box, nor its placement last in
+ * the file, are assured.
+ *
+ * @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    $Rev$
+ */
+final class ISO14496_Box_MFRO extends ISO14496_Box_Full
+{
+  /** @var integer */
+  private $_size;
+
+  /**
+   * 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->_size = $this->_reader->readUInt32BE();
+  }
+  
+  /**
+   * Returns the number of bytes of the enclosing {@link ISO14496_Box_MFRA} box.
+   * This field is placed at the last of the enclosing box to assist readers
+   * scanning from the end of the file in finding the <i>mfra</i> box.
+   * 
+   * @return integer
+   */
+  public function getSize() { return $this->_size; }
+}