sync/www/assets/js/player.js

/*
The MIT License (MIT)
Copyright (c) 2013 Calvin Montgomery

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.
*/

var VIMEO_FLASH = false;

function removeOld(replace) {
    $("#sc_volume").remove();
    replace = replace || $("<div/>");
    var old = $("#ytapiplayer");
    replace.insertBefore(old);
    old.remove();
    replace.attr("id", "ytapiplayer");
}

var YouTubePlayer = function (data) {
    var self = this;
    waitUntilDefined(window, "YT", function () {
        waitUntilDefined(YT, "Player", function () {
            removeOld();
            self.paused = false;
            self.videoId = data.id;
            self.videoLength = data.seconds;
            var wmode = USEROPTS.wmode_transparent ? "transparent" : "opaque";
            self.player = new YT.Player("ytapiplayer", {
                height: VHEIGHT,
                width: VWIDTH,
                videoId: data.id,
                playerVars: {
                    autohide: 1,        // Autohide controls
                    autoplay: 1,        // Autoplay video
                    controls: 1,        // Show controls
                    iv_load_policy: 3,  // No annotations
                    rel: 0,             // No related videos
                    wmode: wmode
                },
                events: {
                    onReady: function () {
                    },
                    onStateChange: function (ev) {
                        if(PLAYER.paused && ev.data != YT.PlayerState.PAUSED ||
                           !PLAYER.paused && ev.data == YT.PlayerState.PAUSED) {
                            self.paused = (ev.data == YT.PlayerState.PAUSED);
                            if(CLIENT.leader)
                                sendVideoUpdate();
                        }
                        else {
                            self.paused = (ev.data == YT.PlayerState.PAUSED);
                        }
                        if(CLIENT.leader && ev.data == YT.PlayerState.ENDED) {
                            socket.emit("playNext");
                        }
                    }
                }
            });
            $("#ytapiplayer").css("border", "none");
        });
    });

    self.load = function (data) {
        if(self.player && self.player.loadVideoById) {
            self.player.loadVideoById(data.id, data.currentTime);
            if(VIDEOQUALITY) {
                self.player.setPlaybackQuality(VIDEOQUALITY);
                // What's that?  Another stupid hack for the HTML5 player?
                self.player.setPlaybackQuality(VIDEOQUALITY);
            }
            self.videoId = data.id;
            self.videoLength = data.seconds;
        }
    };

    self.pause = function () {
        if(self.player && self.player.pauseVideo)
            self.player.pauseVideo();
    };

    self.play = function () {
        if(self.player && self.player.playVideo)
            self.player.playVideo();
    };

    self.isPaused = function (callback) {
        if(self.player && self.player.getPlayerState) {
            var state = self.player.getPlayerState();
            callback(state != YT.PlayerState.PLAYING);
        } else {
            callback(false);
        }
    };

    self.getTime = function (callback) {
        if(self.player && self.player.getCurrentTime)
            callback(self.player.getCurrentTime());
    };

    self.seek = function (time) {
        if(self.player && self.player.seekTo)
            self.player.seekTo(time, true);
    };

    self.getVolume = function () {
        if (!self.player || !self.player.getVolume || !self.player.isMuted) {
            return NaN;
        }

        return self.player.isMuted() ? 0 : self.player.getVolume()/100;
    };

    self.setVolume = function (vol) {
        if (self.player && self.player.setVolume) {
            self.player.setVolume(vol * 100);
        }
    };
};

var VimeoPlayer = function (data) {
    var self = this;
    waitUntilDefined(window, "$f", function () {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init = function () {
            var iframe = $("<iframe/>");
            removeOld(iframe);
            iframe.attr("width", VWIDTH);
            iframe.attr("height", VHEIGHT);
            var prto = location.protocol;
            iframe.attr("src", prto+"//player.vimeo.com/video/"+self.videoId+"?api=1&player_id=ytapiplayer");
            iframe.attr("webkitAllowFullScreen", "");
            iframe.attr("mozallowfullscreen", "");
            iframe.attr("allowFullScreen", "");
            if(USEROPTS.wmode_transparent)
                iframe.attr("wmode", "transparent");
            iframe.css("border", "none");

            $f(iframe[0]).addEvent("ready", function () {
                self.player = $f(iframe[0]);
                self.player.api("play");

                self.player.addEvent("finish", function () {
                    if(CLIENT.leader) {
                        socket.emit("playNext");
                    }
                });

                self.player.addEvent("pause", function () {
                    self.paused = true;
                    if(CLIENT.leader)
                        sendVideoUpdate();
                });

                self.player.addEvent("play", function () {
                    self.paused = false;
                    if(CLIENT.leader)
                        sendVideoUpdate();
                });
            }.bind(self));
        };

        self.init();

        self.load = function (data) {
            self.videoId = data.id;
            self.videoLength = data.seconds;
            self.init();
        };

        self.pause = function () {
            if(self.player && self.player.api)
                self.player.api("pause");
        };

        self.play = function () {
            if(self.player && self.player.api)
                self.player.api("play");
        };

        self.isPaused = function (callback) {
            callback(self.paused);
        };

        self.getTime = function (callback) {
            if(self.player && self.player.api) {
                // Vimeo api returns time as a string because fuck logic
                self.player.api("getCurrentTime", function (time) {
                    callback(parseFloat(time));
                });
            }
        };

        self.seek = function(time) {
            if(self.player && self.player.api)
                self.player.api("seekTo", time);
        };
    });
};

var VimeoFlashPlayer = function (data) {
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        removeOld();
        var prto = location.protocol;
        var url = prto+"//vimeo.com/moogaloop.swf?clip_id="+self.videoId;
        url += "&" + [
            "server=vimeo.com",
            "api=2",
            "show_title=0",
            "show_byline=0",
            "show_portrait=0",
            "fullscreen=1",
            "loop=0"
        ].join("&");
        var flashvars = {
            api: 2,
            player_id: "ytapiplayer"
        };
        var params = {
            allowfullscreen: true,
            allowScriptAccess: "always",
            wmode: USEROPTS.wmode_transparent ? "transparent" : undefined
        };
        swfobject.embedSWF(url,
                           "ytapiplayer",
                           VWIDTH,
                           VHEIGHT,
                           "9.0.0",
                           "expressInstall.swf",
                           flashvars,
                           params);

        self.player = $("#ytapiplayer")[0];
        waitUntilDefined(self.player, "api_addEventListener", function () {
            self.player.api_addEventListener("ready", function () {
                self.player.api_play();

                self.player.api_addEvent("finish", function () {
                    if(CLIENT.leader)
                        socket.emit("playNext");
                });

                self.player.api_addEvent("pause", function () {
                    PLAYER.paused = true;
                    if(CLIENT.leader)
                        sendVideoUpdate();
                });

                self.player.api_addEvent("play", function () {
                    PLAYER.paused = false;
                    if(CLIENT.leader)
                        sendVideoUpdate();
                });
            });
        });
    };

    self.init();

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () {
        if(self.player && self.player.api_pause)
            self.player.api_pause();
    };

    self.play = function () {
        if(self.player && self.player.api_play)
            self.player.api_play();
    };

    self.isPaused = function (callback) {
        callback(self.paused);
    };

    self.getTime = function (callback) {
        if(self.player && self.player.api_getCurrentTime) {
            var t = parseFloat(self.player.api_getCurrentTime());
            callback(t);
        }
    };

    self.seek = function (time) {
        if(self.player.api_seekTo);
            self.player.api_seekTo(time);
    };
};

var DailymotionPlayer = function (data) {
    var self = this;
    waitUntilDefined(window, "DM", function () {
        removeOld();
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.player = DM.player("ytapiplayer", {
            video: data.id,
            width: parseInt(VWIDTH, 10),
            height: parseInt(VHEIGHT, 10),
            params: { autoplay: 1 }
        });

        self.player.addEventListener("apiready", function (e) {
            self.player.addEventListener("ended", function (e) {
                if(CLIENT.leader) {
                    socket.emit("playNext");
                }
            });

            self.player.addEventListener("pause", function (e) {
                PLAYER.paused = true;
                if(CLIENT.leader)
                    sendVideoUpdate();
            });

            self.player.addEventListener("playing", function (e) {
                PLAYER.paused = false;
                if(CLIENT.leader)
                    sendVideoUpdate();
            });
        });
    });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        if(self.player && self.player.api)
            self.player.api("load", data.id);
    };

    self.pause = function () {
        if(self.player && self.player.api)
            self.player.api("pause");
    };

    self.play = function () {
        if(self.player && self.player.api)
            self.player.api("play");
    };

    self.isPaused = function (callback) {
        callback(self.paused);
    };

    self.getTime = function (callback) {
        if(self.player)
            callback(self.player.currentTime);
    };

    self.seek = function (seconds) {
        if(self.player && self.player.api)
            self.player.api("seek", seconds);
    };
};

var SoundcloudPlayer = function (data) {
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    waitUntilDefined(window, "SC", function () {
        unfixSoundcloudShit();
        var iframe = $("<iframe/>");
        removeOld(iframe);

        iframe.attr("id", "ytapiplayer");
        iframe.attr("src", "https://w.soundcloud.com/player/?url="+self.videoId);
        iframe.css("width", "100%").attr("height", "166");
        iframe.css("border", "none");

        var volslider = $("<div/>").attr("id", "sc_volume")
            .insertAfter(iframe);

        volslider.slider({
            range: "min",
            value: 100,
            stop: function (event, ui) {
                self.player.setVolume(ui.value);
            }
        });

        self.player = SC.Widget("ytapiplayer");

        self.player.bind(SC.Widget.Events.READY, function () {
            self.player.load(self.videoId, { auto_play: true });

            self.player.bind(SC.Widget.Events.PAUSE, function () {
                PLAYER.paused = true;
                if(CLIENT.leader)
                    sendVideoUpdate();
            });

            self.player.bind(SC.Widget.Events.PLAY, function () {
                PLAYER.paused = false;
                if(CLIENT.leader)
                    sendVideoUpdate();
            });

            self.player.bind(SC.Widget.Events.FINISH, function () {
                if(CLIENT.leader) {
                    socket.emit("playNext");
                }
            });
        }.bind(self));
    });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        if(self.player && self.player.load)
            self.player.load(data.id, { auto_play: true });
    };

    self.pause = function () {
        if(self.player && self.player.pause)
            self.player.pause();
    };

    self.play = function () {
        if(self.player && self.player.play)
            self.player.play();
    };

    self.isPaused = function (callback) {
        if(self.player && self.player.isPaused)
            self.player.isPaused(callback);
        else
            callback(false);
    };

    self.getTime = function (callback) {
        if(self.player && self.player.getPosition) {
            self.player.getPosition(function (pos) {
                callback(pos / 1000);
            });
        }
    };

    self.seek = function (seconds) {
        if(self.player && self.player.seekTo)
            self.player.seekTo(seconds * 1000);
    };
};

var LivestreamPlayer = function (data) {
    removeOld();
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        var flashvars = { channel: self.videoId };
        var params = { AllowScriptAccess: "always" };
        var prto = location.protocol;
        swfobject.embedSWF(
            prto+"//cdn.livestream.com/chromelessPlayer/v20/playerapi.swf",
            "ytapiplayer",
            VWIDTH, VHEIGHT,
            "9.0.0",
            "expressInstall.swf",
            flashvars,
            params
        );
    };

    self.init();

    self.load = function(data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var TwitchTVPlayer = function (data) {
    removeOld();
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        var url = "http://www.twitch.tv/widgets/live_embed_player.swf?channel="+self.videoId;
        var params = {
            allowFullScreen: "true",
            allowScriptAccess: "always",
            allowNetworking: "all",
            movie: "http://www.twitch.tv/widgets/live_embed_player.swf",
            id: "live_embed_player_flash",
            flashvars: "hostname=www.twitch.tv&channel="+self.videoId+"&auto_play=true&start_volume=100"
        };
        swfobject.embedSWF(url,
            "ytapiplayer",
            VWIDTH, VHEIGHT,
            "8", 
            null, null,
            params,
            {}
        );
    };

    waitUntilDefined(window, "swfobject", function () {
        self.init();
    });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var JustinTVPlayer = function (data) {
    removeOld();
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        var prto = location.protocol;
        var url = "http://www.justin.tv/widgets/live_embed_player.swf?channel="+self.videoId;
        var params = {
            allowFullScreen: "true",
            allowScriptAccess: "always",
            allowNetworking: "all",
            movie: "http://www.justin.tv/widgets/live_embed_player.swf",
            id: "live_embed_player_flash",
            flashvars: "hostname=www.justin.tv&channel="+self.videoId+"&auto_play=true&start_volume=100"
        };
        swfobject.embedSWF(url,
            "ytapiplayer",
            VWIDTH, VHEIGHT,
            "8", 
            null, null,
            params,
            {}
        );
    };

    waitUntilDefined(window, "swfobject", function () {
        self.init();
    });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var RTMPPlayer = function (data) {
    removeOld();
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        var prto = location.protocol;
        var url = prto+"//fpdownload.adobe.com/strobe/FlashMediaPlayback_101.swf";
        var src = encodeURIComponent(self.videoId);
        var params = {
            allowFullScreen: "true",
            allowScriptAccess: "always",
            allowNetworking: "all",
            wMode: "direct",
            movie: prto+"//fpdownload.adobe.com/strobe/FlashMediaPlayback_101.swf",
            flashvars: "src="+src+"&streamType=live&autoPlay=true"
        };
        swfobject.embedSWF(url,
            "ytapiplayer",
            VWIDTH, VHEIGHT,
            "8",
            null, null,
            params,
            {}
        );
    };

    waitUntilDefined(window, "swfobject", function () {
        self.init();
    });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var JWPlayer = function (data) {
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        removeOld();

        jwplayer("ytapiplayer").setup({
            file: self.videoId,
            width: VWIDTH,
            height: VHEIGHT,
            autostart: true
        });

        jwplayer().onPlay(function() {
            self.paused = false;
            if(CLIENT.leader)
                sendVideoUpdate();
        });
        jwplayer().onPause(function() {
            self.paused = true;
            if(CLIENT.leader)
                sendVideoUpdate();
        });
        jwplayer().onComplete(function() {
            socket.emit("playNext");
        });
    };

    waitUntilDefined(window, "jwplayer", function () { self.init(); });

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () {
        if(jwplayer)
            jwplayer().pause(true);
    };

    self.play = function () {
        if(jwplayer)
            jwplayer().play(true);
    };

    self.isPaused = function (callback) {
        if(jwplayer)
            callback(jwplayer().getState() !== "PLAYING");
    };

    self.getTime = function (callback) {
        // Only return time for non-live media
        if(jwplayer && jwplayer().getDuration() != -1) {
            callback(jwplayer().getPosition());
        }
    };

    self.seek = function (time) {
        if(jwplayer)
            jwplayer().seek(time);
    };
};

var UstreamPlayer = function (data) {
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        var iframe = $("<iframe/>");
        removeOld(iframe);
        iframe.attr("width", VWIDTH);
        iframe.attr("height", VHEIGHT);
        var prto = location.protocol;
        iframe.attr("src", prto+"//www.ustream.tv/embed/"+self.videoId+"?v=3&wmode=direct");
        iframe.attr("frameborder", "0");
        iframe.attr("scrolling", "no");
        iframe.css("border", "none");
    };
    
    self.init();

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var ImgurPlayer = function (data) {
    var self = this;
    self.init = function () {
        var iframe = $("<iframe/>");
        removeOld(iframe);
        iframe.attr("width", VWIDTH);
        iframe.attr("height", VHEIGHT);
        var prto = location.protocol;
        iframe.attr("src", prto+"//imgur.com/a/"+self.videoId+"/embed");
        iframe.attr("frameborder", "0");
        iframe.attr("scrolling", "no");
        iframe.css("border", "none");
    };

    self.init();

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var CustomPlayer = function (data) {
    var self = this;
    self.videoId = data.id;
    self.videoLength = data.seconds;
    self.init = function () {
        removeOld();
        var div = $("#ytapiplayer");
        div.attr("id", "");
        div.append(self.videoId);

        self.player = div.find("iframe");
        if(self.player.length === 0) self.player = div.find("object");
        if(self.player.length === 0) self.player = div;
        self.player.attr("id", "ytapiplayer");
        self.player.attr("width", VWIDTH);
        self.player.attr("height", VHEIGHT);
    };

    self.init();

    self.load = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.init();
    };

    self.pause = function () { };

    self.play = function () { };

    self.isPaused = function () { };

    self.getTime = function () { };

    self.seek = function () { };
};

var GoogleDocsPlayer = function (data) {
    var self = this;
    self.init = function (data) {
        self.videoId = data.id;
        self.videoLength = data.seconds;
        self.paused = false;
        var wmode = USEROPTS.wmode_transparent ? "transparent" : "opaque";
        self.player = $("<object/>", data.object)[0];
        $(self.player).attr("data", data.object.data);
        $(self.player).attr("width", VWIDTH)
                      .attr("height", VHEIGHT);
        data.params.forEach(function (p) {
            $("<param/>", p).appendTo(self.player);
        });
        removeOld($(self.player));
    };

    self.init(data);

    self.load = function (data) {
        self.init(data);
    };

    self.pause = function () {
        if(self.player && self.player.pauseVideo)
            self.player.pauseVideo();
    };

    self.play = function () {
        if(self.player && self.player.playVideo)
            self.player.playVideo();
    };

    self.isPaused = function (callback) {
        if(self.player && self.player.getPlayerState) {
            var state = self.player.getPlayerState();
            callback(state != YT.PlayerState.PLAYING);
        } else {
            callback(false);
        }
    };

    self.getTime = function (callback) {
        if(self.player && self.player.getCurrentTime)
            callback(self.player.getCurrentTime());
    };

    self.seek = function (time) {
        if(self.player && self.player.seekTo)
            self.player.seekTo(time, true);
    };
};

function handleMediaUpdate(data) {
    // Don't update if the position is past the video length, but
    // make an exception when the video length is 0 seconds
    if (typeof PLAYER.videoLength === "number") {
        if (PLAYER.videoLength > 0 && 
            data.currentTime > PLAYER.videoLength) {
            return;
        }
    }
    var wait = data.currentTime < 0;
    // Media change
    if(data.id && data.id !== PLAYER.videoId) {
        if(data.currentTime < 0)
            data.currentTime = 0;
        PLAYER.load(data);
        PLAYER.play();
    }

    if (wait) {
        var tm = 1;
        /* Stupid hack -- In this thrilling episode of
           "the YouTube API developers should eat a boat", the
           HTML5 player apparently breaks if I play()-seek(0)-pause()
           quickly (as a "start buffering but don't play yet"
           mechanism)
        */
        if (PLAYER.type === "yt") {
            tm = 500;
        }
        setTimeout(function () {
            PLAYER.seek(0);
            PLAYER.pause();
        }, tm);
        return;
    }
    
    // Don't synch if leader or synch disabled
    if(CLIENT.leader || !USEROPTS.synch)
        return;

    // Handle pause/unpause
    if(data.paused) {
        PLAYER.isPaused(function (paused) {
            if (!paused) {
                PLAYER.seek(data.currentTime);
                PLAYER.pause();
            }
        });
    } else {
        PLAYER.isPaused(function (paused) {
            if(paused)
                PLAYER.play();
        });
    }

    // Handle time change
    PLAYER.getTime(function (seconds) {
        var time = data.currentTime;
        var diff = time - seconds || time;
        var acc = USEROPTS.sync_accuracy;
        // Dailymotion can't seek more accurately than to the nearest
        // 2 seconds.  It gets stuck looping portions of the video
        // at the default synch accuracy of 2.
        // I've found 5 works decently.
        if (PLAYER.type === "dm")
            acc = Math.max(acc, 5.0);

        if(diff > acc) {
            PLAYER.seek(time);
        } else if(diff < -acc) {
            // Don't synch all the way back, causes buffering problems
            // because for some dumb reason YouTube erases the buffer
            // when you seek backwards
            //
            // ADDENDUM 2013-10-24 Except for dailymotion because
            // their player is inaccurate
            if (PLAYER.type !== "dm")
                time += 1;
            PLAYER.seek(time);
        }
    });
}

var constructors = {
    "yt": YouTubePlayer,
    "vi": VIMEO_FLASH ? VimeoFlashPlayer : VimeoPlayer,
    "dm": DailymotionPlayer,
    "sc": SoundcloudPlayer,
    "li": LivestreamPlayer,
    "tw": TwitchTVPlayer,
    "jt": JustinTVPlayer,
    "us": UstreamPlayer,
    "rt": RTMPPlayer,
    "jw": JWPlayer,
    "im": ImgurPlayer,
    "cu": CustomPlayer,
    "gd": GoogleDocsPlayer
};

function loadMediaPlayer(data) {
    if(data.type in constructors) {
        PLAYER = new constructors[data.type](data);
        PLAYER.type = data.type;
    }
}