/*

 * jQuery Media Plugin for converting elements into rich media content.

 *

 * Examples and documentation at: http://malsup.com/jquery/media/

 * Copyright (c) 2007 M. Alsup

 * Dual licensed under the MIT and GPL licenses:

 * http://www.opensource.org/licenses/mit-license.php

 * http://www.gnu.org/licenses/gpl.html

 *

 * @author: M. Alsup

 * @version: 0.70 (7/05/2007)

 * @requires jQuery v1.1.2 or later

 *

 * Supported Media Players:

 *    - Flash

 *    - Quicktime

 *    - Real Player

 *    - Silverlight

 *    - Windows Media Player

 *    - iframe

 *

 * Supported Media Formats:

 *   Any types supported by the above players, such as:

 *     Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp

 *     Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma

 *     Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml

 *

 * Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac!

 */

(function($) {



/**

 * Chainable method for converting elements into rich media.

 *

 * @name media

 * @param Object options Options object

 * @param Function callback fn invoked for each matched element before conversion

 * @param Function callback fn invoked for each matched element after conversion

 * @cat Plugins/media

 */

$.fn.media = function(options, f1, f2) {

    return this.each(function() {

        if (typeof options == 'function') {

            f2 = f1;

            f1 = options;

            options = {};

        }

        var o = getSettings(this, options);

        // pre-conversion callback, passes original element and fully populated options

        if (typeof f1 == 'function') f1(this, o);

        

        var r = getTypesRegExp();

        var m = r.exec(o.src) || ['.null','null'];

        o.type ? m[0] = o.type : m.shift();

        for (var i=0; i < m.length; i++) {

            fn = m[i].toLowerCase();

            if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers

            if (!$.fn.media[fn]) 

                continue;  // unrecognized media type

            // normalize autoplay settings

            var player = $.fn.media[fn+'_player'];

            if (!o.params) o.params = {};

            if (player) {

                var num = player.autoplayAttr == 'autostart';

                o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false;

            }

            var $div = $.fn.media[fn](this, o);



            if (o.bgColor)

				$div.css('backgroundColor', o.bgColor).width(o.width);

			else

				$div.width(o.width);

            // post-conversion callback, passes original element, new div element and fully populated options

            if (typeof f2 == 'function') f2(this, $div[0], o, player.name);

            break;

        }

    });

};





/**

 * Non-chainable method for adding or changing file format / player mapping

 * @name mapFormat

 * @param String format File format extension (ie: mov, wav, mp3)

 * @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe

 */

$.fn.media.mapFormat = function(format, player) {

    if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid

    format = format.toLowerCase();

    if (isDigit(format[0])) format = 'fn' + format;

    $.fn.media[format] = $.fn.media[player];

};





// global defautls; override as needed

$.fn.media.defaults = {

    width:         400,

    height:        400,

    preferMeta:    1,         // true if markup metadata takes precedence over options object

    autoplay:      0,         // normalized cross-player setting

    //bgColor:       '#ffffff', // background color

    params:        {},        // added to object element as param elements; added to embed element as attrs

    attrs:         {},        // added to object and embed elements as attrs

    flashvars:     {},        // added to flash content as flashvars param/attr

    flashVersion:  '7',       // required flash version

	caption:       false,

    

    // MediaBox options

    boxTitle:      null,      // MediaBox titlebar

    loadingImage:  null,      // MediaBox loading indicator

    

    // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player)

    flvPlayer:     'mediaplayer.swf',

    mp3Player:     'mediaplayer.swf',

    

    // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx

    silverlight: {

        inplaceInstallPrompt: 'true', // display in-place install prompt?

        isWindowless:         'true', // windowless mode (false for wrapping markup)

        framerate:            '24',   // maximum framerate

        version:              '0.9',  // Silverlight version

        onError:              null,   // onError callback

        onLoad:               null,   // onLoad callback

        initParams:           null,   // object init params

        userContext:          null    // callback arg passed to the load callback

    }

};



// Media Players; think twice before overriding

$.fn.media.defaults.players = {

    flash: {

        name:         'flash',

        types:        'flv,mp3,swf',

        oAttrs:   {

            classid:  'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',

            type:     'application/x-oleobject',

            codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion

        },

        eAttrs: {

            type:         'application/x-shockwave-flash',

            pluginspage:  'http://www.adobe.com/go/getflashplayer'

        }        

    },

    quicktime: {

        name:         'quicktime',

        types:        'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp',

        oAttrs:   {

            classid:  'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',

            codebase: 'http://www.apple.com/qtactivex/qtplugin.cab'

        },

        eAttrs: {

            pluginspage:  'http://www.apple.com/quicktime/download/'

        }

    },

    realplayer: {

        name:         'real',

        types:        'ra,ram,rm,rpm,rv,smi,smil',

        autoplayAttr: 'autostart',

        oAttrs:   {

            classid:  'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA'

        },

        eAttrs: {

            type:         'audio/x-pn-realaudio-plugin',

            pluginspage:  'http://www.real.com/player/'

        }

    },

    winmedia: {

        name:         'winmedia',

        types:        'asf,avi,wma,wmv',

        autoplayAttr: 'autostart',

        oIESrc:         'url',

        oAttrs:   {

            classid:  'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6',

            type:     'application/x-oleobject'

        },

        eAttrs: {

            type:         'application/x-mplayer2',

            pluginspage:  'http://www.microsoft.com/Windows/MediaPlayer/'

        }        

    },

    shockwave: {

        name:         'shockwave',

        types:        'dcr',

        oAttrs:   {

            classid:  'clsid:166B1BCA-3F9C-11CF-8075-444553540000',

            codebase: 'http://download.macromedia.com/pub/shockwave/cabs/director/sw.cab#version=' + $.fn.media.defaults.flashVersion

        },

        eAttrs: {

            type:         'application/x-director',

            pluginspage:  'http://www.macromedia.com/shockwave/download/'

        }        

    },

    applet: {

        name:         'applet',

        types:        'class,null',

		oFFSrc:         'code',

		oIESrc:       'code',

        oAttrs:   {

            classid:  'clsid:8AD9C840-044E-11D1-B3E9-00805F499D93',

            codebase: 'http://java.sun.com/products/plugin/autodl/jinstall-1_5_0-windows-i586.cab#Version=1,5,0,0'

        },

        eAttrs: {

            type:         'application/x-java-applet',

            pluginspage:  'http://java.sun.com/j2se/1.5.0/download.html'

        }        

    }

};



//

//  everything below here is private

//



var counter = 1;



for (var player in $.fn.media.defaults.players) {

    var types = $.fn.media.defaults.players[player].types;

    $.each(types.split(','), function(i,o) {

        if (isDigit(o[0])) o = 'fn' + o;

        $.fn.media[o] = $.fn.media[player] = getGenerator(player);

        $.fn.media[o+'_player'] = $.fn.media.defaults.players[player];

    });

};



function getTypesRegExp() {

    var types = '';

    for (var player in $.fn.media.defaults.players) {

        if (types.length) types += ',';

        types += $.fn.media.defaults.players[player].types;

    };

    return new RegExp('\\.(' + types.replace(/,/g,'|') + ')\\b');

};



function getGenerator(player) {

    return function(el, options) {

        return generate(el, options, player);

    };

};



function isDigit(c) {

    return '0123456789'.indexOf(c) > -1;

};



// flatten all possible options: global defaults, meta, option obj

function getSettings(el, options) {

    options = options || {};

    var $el = $(el);

    

    var cls = el.className || '';

    var meta = $.meta ? $el.data() : {};

    var w = meta.width  || parseInt(((cls.match(/w:(\d+)/)||[])[1]||0));

    var h = meta.height || parseInt(((cls.match(/h:(\d+)/)||[])[1]||0));

    if (w) meta.width  = w;

    if (h) meta.height = h;

    if (cls) meta.cls = cls;



    var a = $.fn.media.defaults;

    var b = $.meta && $.fn.media.defaults.preferMeta ? options : meta;

    var c = b == options ? meta : options;



    var p = { params: { } }; //bgColor: options.bgColor || $.fn.media.defaults.bgColor } };

    var opts = $.extend({}, a, b, c);

    $.each(['attrs','params','flashvars'], function(i,o) {

        opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {});

    });



    if (typeof opts.caption == 'undefined') opts.caption = $el.text();



    // make sure we have a source!

    opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown';

    return opts;

};



//

//  Flash Player

//



// generate flash using SWFObject if possible

$.fn.media.swf = function(el, opts) {

    if (typeof SWFObject == 'undefined') {

        // roll our own

        if (opts.flashvars) {

            var a = [];

            for (var f in opts.flashvars)

                a.push(f + '=' + opts.flashvars[f]);

            if (!opts.params) opts.params = {};

            opts.params.flashvars = a.join('&');

        }

        return generate(el, opts, 'flash');

    }



    var id = el.id ? (' id="'+el.id+'"') : '';

    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';

    var $div = $('<div' + id + cls + '>');

    $(el).after($div).remove();



    var so = new SWFObject(opts.src, 'movie_player_' + counter++, opts.width, opts.height, opts.flashVersion, opts.bgColor);

    for (var p in opts.params)

        if (p != 'bgColor') so.addParam(p, opts.params[p]);

    for (var f in opts.flashvars)

        so.addVariable(f, opts.flashvars[f]);

    so.write($div[0]);



    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);

    return $div;

};



// map flv and mp3 files to the swf player by default

$.fn.media.flv = $.fn.media.mp3 = function(el, opts) {

    var src = opts.src;

    var player = /\.mp3\b/i.test(src) ? $.fn.media.defaults.mp3Player : $.fn.media.defaults.flvPlayer;

    opts.src = player;

    opts.src = opts.src + '?file=' + src;

    opts.flashvars = $.extend({}, { file: src }, opts.flashvars );

    return $.fn.media.swf(el, opts);

};





//

// generate object/embed markup

//

function generate(el, opts, player) {

    var $el = $(el);

    var o = $.fn.media.defaults.players[player];

    

    if ($.browser.msie) {

        var a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];

        for (var key in opts.attrs)

            a.push(key + '="'+opts.attrs[key]+'" ');

        for (var key in o.oAttrs || {})

            a.push(key + '="'+o.oAttrs[key]+'" ');

        a.push('></ob'+'ject'+'>');

        var p = ['<param name="' + (o.oIESrc || 'src') +'" value="' + opts.src + '">'];

        for (var key in opts.params)

            p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');

        var o = document.createElement(a.join(''));

        for (var i=0; i < p.length; i++)

            o.appendChild(document.createElement(p[i]));

    }

    else {

		// treat applet different

		if (player == "applet") {

	        var a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];

	        for (var key in opts.attrs)

	            a.push(key + '="'+opts.attrs[key]+'" ');

	        for (var key in o.eAttrs || {})

	            a.push(key + '="'+o.eAttrs[key]+'" ');

		a.push(">");

		var p = ['<param name="' + (o.oFFSrc || 'src') +'" value="' + opts.src + '">'];

	        for (var key in opts.params)

	            p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');

		a.push(p.join(''));

	        a.push('</ob'+'ject'+'>');

		}

		else {

                    var a = ['<embed width="' + opts.width + '" height="' + opts.height + '" style="display:block"'];

                    if (opts.src)

			            a.push(' ' + (o.oFFSrc || 'src') + '="' + opts.src + '" ');

                    for (var key in opts.attrs)

                        a.push(key + '="' + opts.attrs[key] + '" ');

                    for (var key in o.eAttrs || {})

                        a.push(key + '="' + o.eAttrs[key] + '" ');

                    for (var key in opts.params)

                        a.push(key + '="' + opts.params[key] + '" ');

                    a.push('></em'+'bed'+'>');

                }

    }

    // convert element to div

    var id = el.id ? (' id="'+el.id+'"') : '';

    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';

    var $div = $('<div' + id + cls + '>');

    $el.after($div).remove();

    ($.browser.msie || player == 'iframe') ? $div.append(o) : $div.html(a.join(''));

    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);

    return $div;

};





})(jQuery);