Vhs HTML5 Audioplayer Viewhelper

gistfile1.php

<?php
/***************************************************************
 *  Copyright notice
 *
 *  (c) 2013 Björn Fromme <fromme@dreipunktnull.com>, dreipunktnull
 *
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
 *  free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *
 *  This script is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 * ************************************************************* */

/**
 * Renders HTML code to embed a HTML5 audio player. NOTICE: This is
 * all HTML5 and won't work on browsers like IE8 and below. Include
 * some helper library like http://kolber.github.io/audiojs/ if you need to support those.
 *
 * @author Björn Fromme <fromme@dreipunktnull.com>, dreipunktnull
 * @package Vhs
 * @subpackage ViewHelpers\Media
 */
class Tx_Vhs_ViewHelpers_Media_AudioViewHelper extends Tx_Vhs_ViewHelpers_Media_AbstractMediaTagViewHelper {

  /**
	 * @var string
	 */
	protected $tagName = 'audio';

	/**
	 * @var array
	 */
	protected $validTypes = array('mp3', 'wav', 'ogg');

	/**
	 * Initialize arguments.
	 *
	 * @return void
	 * @api
	 */
	public function initializeArguments() {
		parent::initializeArguments();
		$this->registerUniversalTagAttributes();
		$this->registerArgument('autoplay', 'boolean', 'Specifies that the audio will start playing as soon as it is ready.', FALSE, FALSE);
		$this->registerArgument('controls', 'boolean', 'Specifies that audio controls should be displayed (such as a play/pause button etc).', FALSE, FALSE);
		$this->registerArgument('loop', 'boolean', 'Specifies that the playback will start over again, every time it is finished.', FALSE, FALSE);
		$this->registerArgument('autobuffer', 'boolean', 'Specifies if and how the author thinks the audio should be loaded when the page loads.', FALSE, FALSE);
	}

	/**
	 * Render method
	 *
	 * @throws Tx_Fluid_Core_ViewHelper_Exception
	 * @return string
	 */
	public function render() {
		$sources = $this->getSourcesFromArgument();
		if (0 == count($sources)) {
			throw new Tx_Fluid_Core_ViewHelper_Exception('No audio sources provided.', 1359382189);
		}
		foreach ($sources as $source) {
			if (FALSE === isset($source['src'])) {
				throw new Tx_Fluid_Core_ViewHelper_Exception('Missing value for "src" in sources array.', 1359381250);
			}
			$src = $source['src'];

			if (FALSE === isset($source['type'])) {
				throw new Tx_Fluid_Core_ViewHelper_Exception('Missing value for "type" in sources array.', 1359381255);
			}
			if (FALSE === in_array(strtolower($source['type']), $this->validTypes)) {
				throw new Tx_Fluid_Core_ViewHelper_Exception('Invalid audio type "' . $source['type'] . '".', 1359381260);
			}
			$type = 'audio/' . strtolower($source['type']);
			$src = $this->preprocessSourceUri($src);
			$this->renderChildTag('source', array('src' => $src, 'type' => $type), 'append');
		}
		
		if (TRUE === (boolean) $this->arguments['autoplay']) {
			$tagAttributes['autoplay'] = 'autoplay';
		}
		if (TRUE === (boolean) $this->arguments['controls']) {
			$tagAttributes['controls'] = 'controls';
		}
		if (TRUE === (boolean) $this->arguments['loop']) {
			$tagAttributes['loop'] = 'loop';
		}
		if (TRUE === (boolean) $this->arguments['autobuffer']) {
			$tagAttributes['autobuffer'] = 'autobuffer';
		}
		
		$this->tag->addAttributes($tagAttributes);
		return $this->tag->render();
	}
}