Add support for ID3 tags in RIFF

git-svn-id: http://php-reader.googlecode.com/svn/trunk@258 51a70ab9-7547-0410-9469-37e369ee0574

src/Zend/Media/Riff/Chunk/Id3.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * @category   Zend
+ * @package    Zend_Media
+ * @subpackage Riff
+ * @copyright  Copyright (c) 2011 Sven Vollbehr
+ * @license    http://framework.zend.com/license/new-bsd New BSD License
+ * @version    $Id$
+ */
+
+/**#@+ @ignore */
+require_once 'Zend/Media/Riff/Chunk.php';
+require_once 'Zend/Media/Id3v2.php';
+/**#@-*/
+
+/**
+ * The <i>ID3 Tag</i> chunk contains an {@link Zend_Media_Id3v2 ID3v2} tag.
+ *
+ * @category   Zend
+ * @package    Zend_Media
+ * @subpackage Riff
+ * @author     Sven Vollbehr <sven@vollbehr.eu>
+ * @copyright  Copyright (c) 2011 Sven Vollbehr
+ * @license    http://framework.zend.com/license/new-bsd New BSD License
+ * @version    $Id$
+ */
+final class Zend_Media_Riff_Chunk_Id3 extends Zend_Media_Riff_Chunk
+{
+    /** @var Zend_Media_Id3v2 */
+    private $_tag;
+
+    /**
+     * Constructs the class with given parameters and options.
+     *
+     * @param Zend_Io_Reader $reader  The reader object.
+     */
+    public function __construct($reader)
+    {
+        parent::__construct($reader);
+        $this->_tag = new Zend_Media_Id3v2($this->_reader, array('readonly' => true));
+    }
+
+    /**
+     * Returns the {@link Zend_Media_Id3v2 Id3v2} tag class instance.
+     *
+     * @return string
+     */
+    public function getTag()
+    {
+        return $this->_tag;
+    }
+
+    /**
+     * Sets the {@link Zend_Media_Id3v2 Id3v2} tag class instance.
+     *
+     * @param Zend_Media_Id3v2 $tag The tag instance.
+     */
+    public function setTag($tag)
+    {
+        $this->_tag = $tag;
+    }
+}