Wordpress Audio Player plugin modified for HTML5 fallback

<?php
/*
Plugin Name: Audio player
Plugin URI: http://wpaudioplayer.com
Description: Audio Player is a highly configurable but simple mp3 player for all your audio needs. You can customise the player's colour scheme to match your blog theme, have it automatically show track information from the encoded ID3 tags and more. Go to your Settings page to start configuring it.
Version: 2.0.4.6a
Author: Martin Laine mod for html5 player for iDevices http://davidmeharey.com/blog/coding/iphone-html5-audio/
Author URI: http://www.1pixelout.net

License:

Copyright (c) 2010 Martin Laine

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

// Pre-2.6 compatibility
if ( ! defined( 'WP_CONTENT_URL' ) )
      define( 'WP_CONTENT_URL', get_option( 'siteurl' ) . '/wp-content' );
if ( ! defined( 'WP_CONTENT_DIR' ) )
      define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' );
if ( ! defined( 'WP_PLUGIN_URL' ) )
      define( 'WP_PLUGIN_URL', WP_CONTENT_URL. '/plugins' );
if ( ! defined( 'WP_PLUGIN_DIR' ) )
      define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' );

if (!class_exists('AudioPlayer')) {
    class AudioPlayer {
        // Name for serialized options saved in database
        var $optionsName = "AudioPlayer_options";

        var $version = "2.0.4.6";

        var $docURL = "http://wpaudioplayer.com/";

        // Internationalisation
        var $textDomain = "audio-player";
        var $languageFileLoaded = false;

        // Various path variables
        var $pluginURL = "";
        var $pluginPath = "";
        var $playerURL = "";
        var $audioRoot = "";
        var $audioAbsPath = "";
        var $isCustomAudioRoot = false;

        // Options page name
        var $optionsPageName = "audio-player-options";

        // Colour scheme keys
        var $colorKeys = array(
            "bg",
            "leftbg",
            "lefticon",
            "voltrack",
            "volslider",
            "rightbg",
            "rightbghover",
            "righticon",
            "righticonhover",
            "text",
            "track",
            "border",
            "loader",
            "tracker",
            "skip"
        );

        // Default colour scheme
        var $defaultColorScheme = array(
            "bg" => "E5E5E5",
            "text" => "333333",
            "leftbg" => "CCCCCC",
            "lefticon" => "333333",
            "volslider" => "666666",
            "voltrack" => "FFFFFF",
            "rightbg" => "B4B4B4",
            "rightbghover" => "999999",
            "righticon" => "333333",
            "righticonhover" => "FFFFFF",
            "track" => "FFFFFF",
            "loader" => "009900",
            "border" => "CCCCCC",
            "tracker" => "DDDDDD",
            "skip" => "666666",
            "pagebg" => "FFFFFF",
            "transparentpagebg" => true
        );

        // Declare instances global variable
        var $instances = array();

        // Used to track what needs to be inserted in the footer
        var $footerCode = "";

        // Initialise playerID (each instance gets unique ID)
        var $playerID = 0;

        // Flag for dealing with excerpts
        var $inExcerpt = false;

        /**
         * Constructor
         */
        function AudioPlayer() {
            // Get plugin URL and absolute path
            $this->pluginPath = WP_PLUGIN_DIR . "/" . plugin_basename(dirname(__FILE__));
            $this->pluginURL = WP_PLUGIN_URL . "/" . plugin_basename(dirname(__FILE__));

            if ($_SERVER["HTTPS"] == "on" || $_SERVER["SERVER_PORT_SECURE"] == "1") {
                $this->pluginURL = str_replace("http", "https", $this->pluginURL);
            }

            $this->playerURL = $this->pluginURL . "/assets/player.swf";

            // Load options
            $this->options = $this->getOptions();

            // Set audio root from options
            $this->setAudioRoot();

            // Add action and filter hooks to WordPress

            add_action("init", array(&$this, "optionsPanelAction"));

            add_action("admin_menu", array(&$this, "addAdminPages"));
            add_filter("plugin_action_links", array(&$this, "addConfigureLink"), 10, 2);

            add_action("wp_head", array(&$this, "addHeaderCode"));
            add_action("wp_footer", array(&$this, "addFooterCode"));

            add_filter("the_content", array(&$this, "processContent"), 2);
            if (in_array("comments", $this->options["behaviour"])) {
                add_filter("comment_text", array(&$this, "processContent"));
            }
            add_filter("get_the_excerpt", array(&$this, "inExcerpt"), 1);
            add_filter("get_the_excerpt", array(&$this, "outOfExcerpt"), 12);
            add_filter("the_excerpt", array(&$this, "processContent"));
            add_filter("the_excerpt_rss", array(&$this, "processContent"));

            add_filter("attachment_fields_to_edit", array(&$this, "insertAudioPlayerButton"), 10, 2);
            add_filter("media_send_to_editor", array(&$this, "sendToEditor"));

            if ($this->options["disableEnclosures"]) {
                add_filter("rss_enclosure", array(&$this, "removeEnclosures"));
                add_filter("atom_enclosure", array(&$this, "removeEnclosures"));
            }

            add_shortcode("audio", array(&$this, "insertPlayer"));
        }

        /**
         * Removes all enclosures from feeds
         * @return empty string
         */
        function removeEnclosures() {
            return "";
        }

        /**
         * Adds Audio Player options tab to admin menu
         */
        function addAdminPages() {
            global $wp_version;
            $pageName = add_options_page("Audio player options", "Audio Player", 8, $this->optionsPageName, array(&$this, "outputOptionsSubpanel"));
            add_action("admin_head-" . $pageName, array(&$this, "addAdminHeaderCode"), 12);
            // Use the bundled jquery library if we are running WP 2.5 or above
            if (version_compare($wp_version, "2.5", ">=")) {
                wp_enqueue_script("jquery", false, false, "1.2.3");
            }
        }

        /**
         * Adds a settings link next to Audio Player on the plugins page
         */
        function addConfigureLink($links, $file) {
            static $this_plugin;
            if (!$this_plugin) {
                $this_plugin = plugin_basename(__FILE__);
            }
            if ($file == $this_plugin) {
                $settings_link = '<a href="options-general.php?page=' . $this->optionsPageName . '">' . __('Settings') . '</a>';
                array_unshift($links, $settings_link);
            }
            return $links;
        }

        /**
         * Adds subtle plugin credits to WP footer
         */
        function addFooterCredits() {
            $plugin_data = get_plugin_data(__FILE__);
            printf('%1$s plugin | Version %2$s<br />', $plugin_data['Name'], $plugin_data['Version']);
        }

        /**
         * Loads language files according to locale (only does this once per request)
         */
        function loadLanguageFile() {
            if(!$this->languageFileLoaded) {
                load_plugin_textdomain($this->textDomain, "wp-content/plugins/audio-player/languages", dirname( plugin_basename( __FILE__ ) ) . "/languages");
                $this->languageFileLoaded = true;
            }
        }

        /**
         * Retrieves options from DB. Also sets defaults if options not set
         * @return array of options
         */
        function getOptions() {
            // Set default options array to make sure all the necessary options
            // are available when called
            $options = array(
                "audioFolder" => "/audio",
                "playerWidth" => "290",
                "enableAnimation" => true,
                "showRemaining" => false,
                "encodeSource" => true,
                "behaviour" => array("default"),
                "enclosuresAtTop" => false,
                "flashAlternate" => "",
                "rssAlternate" => "nothing",
                "rssCustomAlternate" => __("[Audio clip: view full post to listen]", $this->textDomain),
                "excerptAlternate" => __("[Audio clip: view full post to listen]", $this->textDomain),
                "introClip" => "",
                "outroClip" => "",
                "initialVolume" => "60",
                "bufferTime" => "5",
                "noInfo" => false,
                "checkPolicy" => false,
                "rtl" => false,
                "disableEnclosures" => false,

                "colorScheme" => $this->defaultColorScheme
            );

            $savedOptions = get_option($this->optionsName);
            if (!empty($savedOptions)) {
                foreach ($savedOptions as $key => $option) {
                    $options[$key] = $option;
                }
            }

            // 1.x version upgrade
            if (!array_key_exists("version", $options)) {
                if (get_option("audio_player_web_path")) $options["audioFolder"] = get_option("audio_player_web_path");
                if (get_option("audio_player_behaviour")) $options["behaviour"] = explode(",", get_option("audio_player_behaviour"));
                if (get_option("audio_player_rssalternate")) $options["rssAlternate"] = get_option("audio_player_rssalternate");
                if (get_option("audio_player_rsscustomalternate")) $options["rssCustomAlternate"] = get_option("audio_player_rsscustomalternate");
                if (get_option("audio_player_prefixaudio")) $options["introClip"] = get_option("audio_player_prefixaudio");
                if (get_option("audio_player_postfixaudio")) $options["outroClip"] = get_option("audio_player_postfixaudio");

                if (get_option("audio_player_transparentpagebgcolor")) {
                    $options["colorScheme"]["bg"] = str_replace("0x", "", get_option("audio_player_bgcolor"));
                    $options["colorScheme"]["text"] = str_replace("0x", "", get_option("audio_player_textcolor"));
                    $options["colorScheme"]["skip"] = str_replace("0x", "", get_option("audio_player_textcolor"));
                    $options["colorScheme"]["leftbg"] = str_replace("0x", "", get_option("audio_player_leftbgcolor"));
                    $options["colorScheme"]["lefticon"] = str_replace("0x", "", get_option("audio_player_lefticoncolor"));
                    $options["colorScheme"]["volslider"] = str_replace("0x", "", get_option("audio_player_lefticoncolor"));
                    $options["colorScheme"]["rightbg"] = str_replace("0x", "", get_option("audio_player_rightbgcolor"));
                    $options["colorScheme"]["rightbghover"] = str_replace("0x", "", get_option("audio_player_rightbghovercolor"));
                    $options["colorScheme"]["righticon"] = str_replace("0x", "", get_option("audio_player_righticoncolor"));
                    $options["colorScheme"]["righticonhover"] = str_replace("0x", "", get_option("audio_player_righticonhovercolor"));
                    $options["colorScheme"]["track"] = str_replace("0x", "", get_option("audio_player_trackcolor"));
                    $options["colorScheme"]["loader"] = str_replace("0x", "", get_option("audio_player_loadercolor"));
                    $options["colorScheme"]["border"] = str_replace("0x", "", get_option("audio_player_bordercolor"));
                    $options["colorScheme"]["transparentpagebg"] = (bool) get_option("audio_player_transparentpagebgcolor");
                    $options["colorScheme"]["pagebg"] = str_replace("#", "", get_option("audio_player_pagebgcolor"));
                }
            } else if (version_compare($options["version"], $this->version) == -1) {
                // Upgrade code
                $options["colorScheme"]["transparentpagebg"] = (bool) $options["colorScheme"]["transparentpagebg"];
            }

            // Record current version in DB
            $options["version"] = $this->version;

            // Update DB if necessary
            update_option($this->optionsName, $options);

            return $options;
        }

        /**
         * Writes options to DB
         */
        function saveOptions() {
            update_option($this->optionsName, $this->options);
        }

        /**
         * Sets the real audio root from the audio folder option
         */
        function setAudioRoot() {
            $this->audioRoot = $this->options["audioFolder"];

            $this->audioAbsPath = "";
            $this->isCustomAudioRoot = true;

            if (!$this->isAbsoluteURL($this->audioRoot)) {
                $sysDelimiter = '/';
                if (strpos(ABSPATH, '\\') !== false) $sysDelimiter = '\\';
                $this->audioAbsPath = preg_replace('/[\\\\\/]+/', $sysDelimiter, ABSPATH . $this->audioRoot);

                $this->isCustomAudioRoot = false;
                $this->audioRoot = get_option('siteurl') . $this->audioRoot;
            }
        }

        /**
         * Detects if the user agent is an iPhone or iPod
         * returns true or false
         */
        function detectAppleMobile($query = '') {
            $container = $_SERVER['HTTP_USER_AGENT'];
                $useragents = array(
                "iphone",                // Apple iPhone
                "ipod",                      // Apple iPod touch
                "ipad",                      // Apple iPad
                "aspen",                 // iPhone simulator
                "incognito",             // Other iPhone browser
                "webmate"            // Other iPhone browser
            );
            $applemobile = false;
            foreach ( $useragents as $useragent ) {
                if ( eregi( $useragent, $container ) || file_exists($devfile) ) {
                    $applemobile = true;
                }
            }

            return $applemobile;
        }


        /**
         * Builds and returns array of options to pass to Flash player
         * @return array
         */
        function getPlayerOptions() {
            $playerOptions = array();

            $playerOptions["width"] = $this->options["playerWidth"];

            $playerOptions["animation"] = $this->options["enableAnimation"];
            $playerOptions["encode"] = $this->options["encodeSource"];
            $playerOptions["initialvolume"] = $this->options["initialVolume"];
            $playerOptions["remaining"] = $this->options["showRemaining"];
            $playerOptions["noinfo"] = $this->options["noInfo"];
            $playerOptions["buffer"] = $this->options["bufferTime"];
            $playerOptions["checkpolicy"] = $this->options["checkPolicy"];
            $playerOptions["rtl"] = $this->options["rtl"];

            return array_merge($playerOptions, $this->options["colorScheme"]);
        }

        // ------------------------------------------------------------------------------
        // Excerpt helper functions
        // Sets a flag so we know we are in an automatically created excerpt
        // ------------------------------------------------------------------------------

        /**
         * Sets a flag when getting an excerpt
         * @return excerpt text
         * @param $text String[optional] unchanged excerpt text
         */
        function inExcerpt($text = '') {
            // Only set the flag when the excerpt is empty and WP creates one automatically)
            if('' == $text) $this->inExcerpt = true;

            return $text;
        }

        /**
         * Resets a flag after getting an excerpt
         * @return excerpt text
         * @param $text String[optional] unchanged excerpt text
         */
        function outOfExcerpt($text = '') {
            $this->inExcerpt = false;

            return $text;
        }

        /**
         * Filter function (inserts player instances according to behaviour option)
         * @return the parsed and formatted content
         * @param $content String[optional] the content to parse
         */
        function processContent($content = '') {
            global $comment;

            $this->loadLanguageFile();

            // Reset instance array (this is so we don't insert duplicate players)
            $this->instances = array();

            // Replace mp3 links (don't do this in feeds and excerpts)
            if ( !is_feed() && !$this->inExcerpt && in_array( "links", $this->options["behaviour"] ) ) {
                $pattern = "/<a ([^=]+=['\"][^\"']+['\"] )*href=['\"](([^\"']+\.mp3))['\"]( [^=]+=['\"][^\"']+['\"])*>([^<]+)<\/a>/i";
                $content = preg_replace_callback( $pattern, array(&$this, "parseCallback"), $content );
            }

            // Replace [audio syntax]
            if( in_array( "default", $this->options["behaviour"] ) ) {
                $pattern = "/(<p>)?\[audio:(([^]]+))\](<\/p>)?/i";
                $content = preg_replace_callback( $pattern, array(&$this, "parseCallback"), $content );
            }

            // Enclosure integration (don't do this for feeds, excerpts and comments)
            if( !is_feed() && !$this->inExcerpt && !$comment && in_array( "enclosure", $this->options["behaviour"] ) ) {
                $enclosure = get_enclosed($post_id);

                // Insert intro and outro clips if set
                $introClip = $this->options["introClip"];
                if( $introClip != "" ) $introClip .= ",";
                $outroClip = $this->options["outroClip"];
                if( $outroClip != "" ) $outroClip = "," . $outroClip;

                if( count($enclosure) > 0 ) {
                    for($i = 0;$i < count($enclosure);$i++) {
                        // Make sure the enclosure is an mp3 file and it hasn't been inserted into the post yet
                        if( preg_match( "/.*\.mp3$/", $enclosure[$i] ) == 1 && !in_array( $enclosure[$i], $this->instances ) ) {
                            if ($this->options["enclosuresAtTop"]) {
                                $content = $this->getPlayer( $introClip . $enclosure[$i] . $outroClip, null, $enclosure[$i] ) . "\n\n" . $content;
                            } else {
                                $content .= "\n\n" . $this->getPlayer( $introClip . $enclosure[$i] . $outroClip, null, $enclosure[$i] );
                            }
                        }
                    }
                }
            }

            return $content;
        }

        /**
         * Callback function for preg_replace_callback
         * @return string to replace matches with
         * @param $matches Array
         */
        function parseCallback($matches) {
            $atts = explode("|", $matches[3]);
            $data[0] = $atts[0];
            for ($i = 1; $i < count($atts); $i++) {
                $pair = explode("=", $atts[$i]);
                $data[trim($pair[0])] = trim($pair[1]);
            }
            return $this->insertPlayer($data);
        }

        /**
         * Inserts player
         * @return string to replace matches with
         * @param $data Array
         */
        function insertPlayer($data) {
            $files = array();

            // Alternate content for excerpts (don't do this for feeds)
            if($this->inExcerpt && !is_feed()) {
                return $this->options["excerptAlternate"];
            }

            if (!is_feed()) {
                // Insert intro clip if set
                if ( $this->options["introClip"] != "" ) {
                    $afile = $this->options["introClip"];
                    if (!$this->isAbsoluteURL($afile)) {
                        $afile = $this->audioRoot . "/" . $afile;
                    }
                    array_push( $files, $afile );
                }
            }

            $actualFiles = array();
            $actualFile = "";

            // Create an array of files to load in player
            foreach ( explode( ",", trim($data[0]) ) as $afile ) {
                $afile = trim($afile);

                // Get absolute URLs for relative ones
                if (!$this->isAbsoluteURL($afile)) {
                    $afile = $this->audioRoot . "/" . $afile;
                }

                array_push( $actualFiles, $afile );

                array_push( $files, $afile );

                // Add source file to instances already added to the post
                array_push( $this->instances, $afile );
            }

            if (count($actualFiles) == 1) {
                $actualFile = $actualFiles[0];
            }

            if (!is_feed()) {
                // Insert outro clip if set
                if ( $this->options["outroClip"] != "" ) {
                    $afile = $this->options["outroClip"];
                    if (!$this->isAbsoluteURL($afile)) {
                        $afile = $this->audioRoot . "/" . $afile;
                    }
                    array_push( $files, $afile );
                }
            }

            // Build runtime options array
            array_splice($data, 0, 1);

            // Return player instance code
            return $this->getPlayer( implode( ",", $files ), $data, $actualFile );
        }

        /**
         * Generic player instance function (returns player widget code to insert)
         * @return String the html code to insert
         * @param $source String list of mp3 file urls to load in player
         * @param $playerOptions Object[optional] options to load in player
         * @param $actualFile String[optional] url of main single file (empty if multiple files)
         */
        function getPlayer($source, $playerOptions = array(), $actualFile = "") {
            // Decode HTML entities in file names
            if (function_exists("html_entity_decode")) {
                $source = html_entity_decode($source);
            }

            // Add source to options and encode if necessary

            if ($this->options["encodeSource"]) {
                $playerOptions["soundFile"] = $this->encodeSource($source);
            } else {
                $playerOptions["soundFile"] = $source;
            }

            if (is_feed()) {
                // We are in a feed so use RSS alternate content option
                switch ( $this->options["rssAlternate"] ) {
                    case "download":
                        // Get filenames from path and output a link for each file in the sequence
                        $files = explode(",", $source);
                        $links = "";
                        for ($i = 0; $i < count($files); $i++) {
                            $fileparts = explode("/", $files[$i]);
                            $fileName = $fileparts[count($fileparts)-1];
                            $links .= '<a href="' . $files[$i] . '">' . __('Download audio file', $this->textDomain) . ' (' . $fileName . ')</a><br />';
                        }
                        return $links;
                        break;

                    case "nothing":
                        return "";
                        break;

                    case "custom":
                        return $this->options["rssCustomAlternate"];
                        break;
                }
            } else {
                if($this->detectAppleMobile()){
                    $iphone_player = '';

                    foreach ( explode( ",", $source) as $afilename ) {
                        $afilename = trim($afilename);
                        $iphone_player .= '<audio src="'.$afilename.'" controls="controls">Your browser does not support the html5 audio element.</audio><br />';
                    }
                    return $iphone_player;
                } else {
                    // Not in a feed so return player widget
                    $playerElementID = "audioplayer_" . ++$this->playerID;
                    if (strlen($this->options["flashAlternate"]) > 0) {
                        $playerCode = str_replace(array("%playerID%", "%downloadURL%"), array($playerElementID, $actualFile), $this->options["flashAlternate"]);
                    } else {
                        $playerCode = '<p class="audioplayer_container"><span style="display:block;padding:5px;border:1px solid #dddddd;background:#f8f8f8" id="' . $playerElementID . '">' . sprintf(__('Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version <a href="%s" title="Download Adobe Flash Player">here</a>. You also need to have JavaScript enabled in your browser.', $this->textDomain), 'http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash&amp;promoid=BIOW') . '</span></p>';
                    }

                    $this->footerCode .= 'AudioPlayer.embed("' . $playerElementID . '", ' . $this->php2js($playerOptions) . ');';
                    $this->footerCode .= "\n";

                    return $playerCode;
                }
            }
        }

        /**
         * Outputs the options sub panel
         */
        function outputOptionsSubpanel() {
            $this->loadLanguageFile();

            add_action("in_admin_footer", array(&$this, "addFooterCredits"));

            // Include options panel
            include($this->pluginPath . "/php/options-panel.php");
        }

        /**
         * Handles submitted options (validates and saves modified options)
         */
        function optionsPanelAction() {
            if( isset($_POST['AudioPlayerReset']) && $_POST['AudioPlayerReset'] == "1" ) {
                if( function_exists('current_user_can') && !current_user_can('manage_options') ) {
                    wp_die(__('You do not have sufficient permissions to access this page.'));
                }

                // Reset colour scheme back to default values
                $this->options["colorScheme"] = $this->defaultColorScheme;
                $this->saveOptions();

                $goback = add_query_arg("updated", "true", "options-general.php?page=" . $this->optionsPageName);
                wp_redirect($goback);
                exit();
            } else  if( isset($_POST['AudioPlayerSubmit']) ) {
                if( function_exists('current_user_can') && !current_user_can('manage_options') ) {
                    wp_die(__('You do not have sufficient permissions to access this page.'));
                }

                if ( function_exists('check_admin_referer') ) {
                    check_admin_referer('audio-player-action');
                }

                // Set audio web path
                $_POST['ap_audiowebpath'] = trim($_POST['ap_audiowebpath']);
                if ($_POST["ap_audiowebpath_iscustom"] != "true") {
                    if ( substr( $_POST['ap_audiowebpath'], -1, 1 ) == "/" ) {
                        $_POST['ap_audiowebpath'] = substr( $_POST['ap_audiowebpath'], 0, strlen( $_POST['ap_audiowebpath'] ) - 1 );
                    }
                    if ( substr( $_POST['ap_audiowebpath'], 0, 1 ) != "/" ) {
                        $_POST['ap_audiowebpath'] = "/" . $_POST['ap_audiowebpath'];
                    }
                    $this->options["audioFolder"] = $_POST['ap_audiowebpath'];
                } else if ($this->isAbsoluteURL($_POST['ap_audiowebpath'])) {
                    $this->options["audioFolder"] = $_POST['ap_audiowebpath'];
                }

                // Update behaviour and rss alternate content options
                $this->options["encodeSource"] = isset( $_POST["ap_encodeSource"] );
                $this->options["enableAnimation"] = !isset( $_POST["ap_disableAnimation"] );
                $this->options["showRemaining"] = isset( $_POST["ap_showRemaining"] );
                $this->options["noInfo"] = isset( $_POST["ap_disableTrackInformation"] );
                $this->options["checkPolicy"] = isset( $_POST["ap_checkPolicy"] );
                $this->options["rtl"] = isset( $_POST["ap_rtlMode"] );
                $this->options["enclosuresAtTop"] = isset( $_POST["ap_enclosuresAtTop"] );
                $this->options["disableEnclosures"] = isset( $_POST["ap_disableEnclosures"] );

                if (isset($_POST['ap_behaviour'])) {
                    $this->options["behaviour"] = $_POST['ap_behaviour'];
                } else {
                    $this->options["behaviour"] = array();
                }

                //$this->options["flashAlternate"] = trim(stripslashes($_POST['ap_flashalternate']));
                $this->options["excerptAlternate"] = trim(stripslashes($_POST['ap_excerptalternate']));
                $this->options["rssAlternate"] = $_POST['ap_rssalternate'];
                $this->options["rssCustomAlternate"] = trim(stripslashes($_POST['ap_rsscustomalternate']));
                $this->options["introClip"] = trim($_POST['ap_audioprefixwebpath']);
                $this->options["outroClip"] = trim($_POST['ap_audiopostfixwebpath']);

                $_POST['ap_player_width'] = trim($_POST['ap_player_width']);
                if ( preg_match("/^[0-9]+%?$/", $_POST['ap_player_width']) == 1 ) {
                    $this->options["playerWidth"] = $_POST['ap_player_width'];
                }

                $_POST['ap_initial_volume'] = trim($_POST['ap_initial_volume']);
                if ( preg_match("/^[0-9]+$/", $_POST['ap_initial_volume']) == 1 ) {
                    $_POST['ap_initial_volume'] = intval($_POST['ap_initial_volume']);
                    if ($_POST['ap_initial_volume'] <= 100) {
                        $this->options["initialVolume"] = $_POST['ap_initial_volume'];
                    }
                }

                $_POST['ap_buffertime'] = trim($_POST['ap_buffertime']);
                if ( preg_match("/^[0-9]+$/", $_POST['ap_buffertime']) == 1 ) {
                    $_POST['ap_buffertime'] = intval($_POST['ap_buffertime']);
                    if ($_POST['ap_buffertime'] > 0) {
                        $this->options["bufferTime"] = $_POST['ap_buffertime'];
                    }
                }

                // Update colour options
                foreach ( $this->colorKeys as $colorKey ) {
                    // Ignore missing or invalid color values
                    if ( isset( $_POST["ap_" . $colorKey . "color"] ) && preg_match( "/^#[0-9A-Fa-f]{6}$/", $_POST["ap_" . $colorKey . "color"] ) == 1 ) {
                        $this->options["colorScheme"][$colorKey] = str_replace( "#", "", $_POST["ap_" . $colorKey . "color"] );
                    }
                }

                if ( isset( $_POST["ap_pagebgcolor"] ) && preg_match( "/^#[0-9A-Fa-f]{6}$/", $_POST["ap_pagebgcolor"] ) == 1 ) {
                    $this->options["colorScheme"]["pagebg"] = str_replace( "#", "", $_POST['ap_pagebgcolor']);
                }
                $this->options["colorScheme"]["transparentpagebg"] = isset( $_POST["ap_transparentpagebg"] );

                $this->saveOptions();

                $goback = add_query_arg("updated", "true", "options-general.php?page=" . $this->optionsPageName);
                wp_redirect($goback);
                exit();
            }
        }

        /**
         * Inserts Audio Player button into media library popup
         * @return the amended form_fields structure
         * @param $form_fields Object
         * @param $post Object
         */
        function insertAudioPlayerButton($form_fields, $post) {
            global $wp_version;

            $file = wp_get_attachment_url($post->ID);

            // Only add the extra button if the attachment is an mp3 file
            if ($post->post_mime_type == 'audio/mpeg') {
                $form_fields["url"]["html"] .= "<button type='button' class='button urlaudioplayer audio-player-" . $post->ID . "' value='[audio:" . attribute_escape($file) . "]' title='[audio:" . attribute_escape($file) . "]'>Audio Player</button>";

                if (version_compare($wp_version, "2.7", "<")) {
                    $form_fields["url"]["html"] .= "<script type='text/javascript'>
                    jQuery('button.audio-player-" . $post->ID . "').bind('click', function(){jQuery(this).siblings('input').val(this.value);});
                    </script>\n";
                }
            }

            return $form_fields;
        }

        /**
         * Format the html inserted when the Audio Player button is used
         * @param $html String
         * @return String
         */
        function sendToEditor($html) {
            if (preg_match("/<a ([^=]+=['\"][^\"']+['\"] )*href=['\"](\[audio:([^\"']+\.mp3)])['\"]( [^=]+=['\"][^\"']+['\"])*>([^<]*)<\/a>/i", $html, $matches)) {
                $html = $matches[2];
                if (strlen($matches[5]) > 0) {
                    $html = preg_replace("/]$/i", "|titles=" . $matches[5] . "]", $html);
                }
            }
            return $html;
        }

        /**
         * Output necessary stuff to WP head section
         */
        function addHeaderCode() {
            echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/audio-player.js?ver=' . $this->version . '"></script>';
            echo "\n";
            echo '<script type="text/javascript">';
            $jsFormattedOptions = $this->php2js($this->getPlayerOptions());
            echo 'AudioPlayer.setup("' . $this->playerURL . '?ver=' . $this->version . '", ' . $jsFormattedOptions . ');';
            echo '</script>';
            echo "\n";
        }

        /**
         * Output necessary stuff to WP footer section (JS calls to embed players)
         */
        function addFooterCode() {
            if (strlen($this->footerCode) > 0) {
                echo '<script type="text/javascript">';
                echo "\n";
                echo $this->footerCode;
                echo '</script>';
                echo "\n";

                // Reset it now
                $this->footerCode = "";
            }
        }

        /**
         * Override media-upload script to handle Audio Player inserts from media library
         */
        function overrideMediaUpload() {
            echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/media-upload.js?ver=' . $this->version . '"></script>';
            echo "\n";
        }

        /**
         * Output necessary stuff to WP admin head section
         */
        function addAdminHeaderCode() {
            global $wp_version;
            echo '<link href="' . $this->pluginURL . '/assets/audio-player-admin.css?ver=' . $this->version . '" rel="stylesheet" type="text/css" />';
            echo "\n";
            echo '<link href="' . $this->pluginURL . '/assets/cpicker/colorpicker.css?ver=' . $this->version . '" rel="stylesheet" type="text/css" />';
            echo "\n";

            // Include jquery library if we are not running WP 2.5 or above
            if (version_compare($wp_version, "2.5", "<")) {
                echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/lib/jquery.js?ver=' . $this->version . '"></script>';
                echo "\n";
            }

            echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/cpicker/colorpicker.js?ver=' . $this->version . '"></script>';
            echo "\n";
            echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/audio-player-admin.js?ver=' . $this->version . '"></script>';
            echo "\n";
            echo '<script type="text/javascript" src="' . $this->pluginURL . '/assets/audio-player.js?ver=' . $this->version . '"></script>';
            echo "\n";
            echo '<script type="text/javascript">';
            echo "\n";
            echo 'var ap_ajaxRootURL = "' . $this->pluginURL . '/php/";';
            echo "\n";
            echo 'AudioPlayer.setup("' . $this->playerURL . '?ver=' . $this->version . '", ' . $this->php2js($this->getPlayerOptions()) . ');';
            echo "\n";
            echo '</script>';
            echo "\n";
        }

        /**
         * Verifies that the given audio folder exists on the server (Ajax call)
         */
        function checkAudioFolder() {
            $audioRoot = $_POST["audioFolder"];

            $sysDelimiter = '/';
            if (strpos(ABSPATH, '\\') !== false) $sysDelimiter = '\\';
            $audioAbsPath = preg_replace('/[\\\\\/]+/', $sysDelimiter, ABSPATH . $audioRoot);

            if (!file_exists($audioAbsPath)) {
                echo $audioAbsPath;
            } else {
                echo "ok";
            }
        }

        /**
         * Parses theme style sheet
         * @return array of colors from current theme
         */
        function getThemeColors() {
            $current_theme_data = get_theme(get_current_theme());

            $theme_css = implode('', file( get_theme_root() . "/" . $current_theme_data["Stylesheet"] . "/style.css"));

            preg_match_all('/:[^:,;\{\}].*?#([abcdef1234567890]{3,6})/i', $theme_css, $matches);

            return array_unique($matches[1]);
        }

        /**
         * Formats a php associative array into a javascript object
         * @return formatted string
         * @param $object Object containing the options to format
         */
        function php2js($object) {
            $js_options = '{';
            $separator = "";
            $real_separator = ",";
            foreach($object as $key=>$value) {
                // Format booleans
                if (is_bool($value)) $value = $value?"yes":"no";
                else if (in_array($key, array("soundFile", "titles", "artists"))) {
                    if (in_array($key, array("titles", "artists"))) {
                        // Decode HTML entities in titles and artists
                        if (function_exists("html_entity_decode")) {
                            $value = html_entity_decode($value);
                        }
                    }

                    $value = rawurlencode($value);
                }
                $js_options .= $separator . $key . ':"' . $value .'"';
                $separator = $real_separator;
            }
            $js_options .= "}";

            return $js_options;
        }

        /**
         * @return true if $path is absolute
         * @param $path Object
         */
        function isAbsoluteURL($path) {
            if (strpos($path, "http://") === 0) {
                return true;
            }
            if (strpos($path, "https://") === 0) {
                return true;
            }
            if (strpos($path, "ftp://") === 0) {
                return true;
            }
            return false;
        }

        /**
         * Encodes the given string
         * @return the encoded string
         * @param $string String the string to encode
         */
        function encodeSource($string) {
            $source = utf8_decode($string);
            $ntexto = "";
            $codekey = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-";
            for ($i = 0; $i < strlen($string); $i++) {
                $ntexto .= substr("0000".base_convert(ord($string{$i}), 10, 2), -8);
            }
            $ntexto .= substr("00000", 0, 6-strlen($ntexto)%6);
            $string = "";
            for ($i = 0; $i < strlen($ntexto)-1; $i = $i + 6) {
                $string .= $codekey{intval(substr($ntexto, $i, 6), 2)};
            }

            return $string;
        }
    }
}

// Instantiate the class
if (class_exists('AudioPlayer')) {
    global $AudioPlayer;
    if (!isset($AudioPlayer)) {
        if (version_compare(PHP_VERSION, '5.0.0', '<')) {
            $AudioPlayer = &new AudioPlayer();
        } else {
            $AudioPlayer = new AudioPlayer();
        }
    }
}

/**
 * Experimental "tag" function for inserting players anywhere (yuk)
 * @return
 * @param $source Object
 */
function insert_audio_player($source) {
    global $AudioPlayer;
    echo $AudioPlayer->processContent($source);
}

?>