path: root/website/mic.js

var websocket_server = null;
if(window.location.protocol === 'http:')
    websocket_server = "ws://" + window.location.hostname + "/janus-ws/janus";
else
    websocket_server = "wss://" + window.location.hostname + "/janus-ws/janus";

var janus = null;
var streaming = null;
var mixertest = null;
var opaqueId = "streamingwithfeedback-"+Janus.randomString(12);

var bitrateTimer = null;
var spinner = null;

var simulcastStarted = false, svcStarted = false;

var selectedStream = null;

var myroom = null;
var myusername = null;
var myid = null;
var webrtcUp = false;
var audioenabled = false;


$(document).ready(function() {
    // Initialize the library (all console debuggers enabled)
    Janus.init({debug: "all", callback: function() {
        // Use a button to start the demo
        $('#start').one('click', function() {
            $(this).attr('disabled', true).unbind('click');
            // Make sure the browser supports WebRTC
            if(!Janus.isWebrtcSupported()) {
                bootbox.alert("No WebRTC support... ");
                return;
            }
            // Create session
            janus = new Janus(
                {
                    server: [websocket_server, "/janus"],
                    iceServers: [{url: "turn:morla.jones.dk", username: "myturn", credential: "notsecure"},
                        {url: "turn:jawa.homebase.dk", username: "myturn", credential: "notsecure"}],
                    success: function() {
                        // Attach to streaming plugin
                        janus.attach(
                            {
                                plugin: "janus.plugin.streaming",
                                opaqueId: opaqueId,
                                success: function(pluginHandle) {
                                    $('#details').remove();
                                    streaming = pluginHandle;
                                    Janus.log("Plugin attached! (" + streaming.getPlugin() + ", id=" + streaming.getId() + ")");
                                    // Setup streaming session
                                    $('#update-streams').click(updateStreamsList);
                                    updateStreamsList();
                                    $('#start').removeAttr('disabled').html("Stop")
                                        .click(function() {
                                            $(this).attr('disabled', true);
                                            clearInterval(bitrateTimer);
                                            janus.destroy();
                                            $('#streamslist').attr('disabled', true);
                                            $('#watch').attr('disabled', true).unbind('click');
                                            $('#start').attr('disabled', true).html("Bye").unbind('click');
                                        });
                                },
                                error: function(error) {
                                    Janus.error("  -- Error attaching plugin... ", error);
                                    bootbox.alert("Error attaching plugin... " + error);
                                },
                                onmessage: function(msg, jsep) {
                                    Janus.debug(" ::: Got a message :::");
                                    Janus.debug(msg);
                                    var result = msg["result"];
                                    if(result !== null && result !== undefined) {
                                        if(result["status"] !== undefined && result["status"] !== null) {
                                            var status = result["status"];
                                            if(status === 'starting')
                                                $('#status').removeClass('hide').text("Starting, please wait...").show();
                                            else if(status === 'started')
                                                $('#status').removeClass('hide').text("Started").show();
                                            else if(status === 'stopped')
                                                stopStream();
                                        } else if(msg["streaming"] === "event") {
                                            // Is simulcast in place?
                                            var substream = result["substream"];
                                            var temporal = result["temporal"];
                                            if((substream !== null && substream !== undefined) || (temporal !== null && temporal !== undefined)) {
                                                if(!simulcastStarted) {
                                                    simulcastStarted = true;
                                                    addSimulcastButtons(temporal !== null && temporal !== undefined);
                                                }
                                                // We just received notice that there's been a switch, update the buttons
                                                updateSimulcastButtons(substream, temporal);
                                            }
                                            // Is VP9/SVC in place?
                                            var spatial = result["spatial_layer"];
                                            temporal = result["temporal_layer"];
                                            if((spatial !== null && spatial !== undefined) || (temporal !== null && temporal !== undefined)) {
                                                if(!svcStarted) {
                                                    svcStarted = true;
                                                    addSvcButtons();
                                                }
                                                // We just received notice that there's been a switch, update the buttons
                                                updateSvcButtons(spatial, temporal);
                                            }
                                        }
                                    } else if(msg["error"] !== undefined && msg["error"] !== null) {
                                        bootbox.alert(msg["error"]);
                                        stopStream();
                                        return;
                                    }
                                    if(jsep !== undefined && jsep !== null) {
                                        Janus.debug("Handling SDP as well...");
                                        Janus.debug(jsep);
                                        // Offer from the plugin, let's answer
                                        streaming.createAnswer(
                                            {
                                                jsep: jsep,
                                                // We want recvonly audio/video and, if negotiated, datachannels
                                                media: { audioSend: false, videoSend: false, data: true },
                                                success: function(jsep) {
                                                    Janus.debug("Got SDP!");
                                                    Janus.debug(jsep);
                                                    var body = { "request": "start" };
                                                    streaming.send({"message": body, "jsep": jsep});
                                                    $('#watch').html("Stop").removeAttr('disabled').click(stopStream);
                                                },
                                                error: function(error) {
                                                    Janus.error("WebRTC error:", error);
                                                    bootbox.alert("WebRTC error... " + JSON.stringify(error));
                                                }
                                            });
                                    }
                                },
                                onremotestream: function(stream) {
                                    Janus.debug(" ::: Got a remote stream :::");
                                    Janus.debug(stream);
                                    var addButtons = false;
                                    if($('#remotevideo').length === 0) {
                                        addButtons = true;
                                        $('#stream').append('<video class="rounded centered hide" id="remotevideo" width=320 height=240 autoplay playsinline/>');
                                        // Show the stream and hide the spinner when we get a playing event
                                        $("#remotevideo").bind("playing", function () {
                                            $('#waitingvideo').remove();
                                            if(this.videoWidth)
                                                $('#remotevideo').removeClass('hide').show();
                                            if(spinner !== null && spinner !== undefined)
                                                spinner.stop();
                                            spinner = null;
                                            var videoTracks = stream.getVideoTracks();
                                            if(videoTracks === null || videoTracks === undefined || videoTracks.length === 0)
                                                return;
                                            var width = this.videoWidth;
                                            var height = this.videoHeight;
                                            $('#curres').removeClass('hide').text(width+'x'+height).show();
                                            if(Janus.webRTCAdapter.browserDetails.browser === "firefox") {
                                                // Firefox Stable has a bug: width and height are not immediately available after a playing
                                                setTimeout(function() {
                                                    var width = $("#remotevideo").get(0).videoWidth;
                                                    var height = $("#remotevideo").get(0).videoHeight;
                                                    $('#curres').removeClass('hide').text(width+'x'+height).show();
                                                }, 2000);
                                            }
                                        });
                                    }
                                    Janus.attachMediaStream($('#remotevideo').get(0), stream);
                                    var videoTracks = stream.getVideoTracks();
                                    if(videoTracks === null || videoTracks === undefined || videoTracks.length === 0) {
                                        // No remote video
                                        $('#remotevideo').hide();
                                        if($('#stream .no-video-container').length === 0) {
                                            $('#stream').append(
                                                '<div class="no-video-container">' +
                                                    '<i class="fa fa-video-camera fa-5 no-video-icon"></i>' +
                                                    '<span class="no-video-text">No remote video available</span>' +
                                                '</div>');
                                        }
                                    } else {
                                        $('#stream .no-video-container').remove();
                                        $('#remotevideo').removeClass('hide').show();
                                    }
                                    if(!addButtons)
                                        return;
                                    if(videoTracks && videoTracks.length &&
                                            (Janus.webRTCAdapter.browserDetails.browser === "chrome" ||
                                                Janus.webRTCAdapter.browserDetails.browser === "firefox" ||
                                                Janus.webRTCAdapter.browserDetails.browser === "safari")) {
                                        $('#curbitrate').removeClass('hide').show();
                                        bitrateTimer = setInterval(function() {
                                            // Display updated bitrate, if supported
                                            var bitrate = streaming.getBitrate();
                                            //~ Janus.debug("Current bitrate is " + streaming.getBitrate());
                                            $('#curbitrate').text(bitrate);
                                            // Check if the resolution changed too
                                            var width = $("#remotevideo").get(0).videoWidth;
                                            var height = $("#remotevideo").get(0).videoHeight;
                                            if(width > 0 && height > 0)
                                                $('#curres').removeClass('hide').text(width+'x'+height).show();
                                        }, 1000);
                                    }
                                },
                                ondataopen: function(data) {
                                    Janus.log("The DataChannel is available!");
                                    $('#waitingvideo').remove();
                                    $('#stream').append(
                                        '<input class="form-control" type="text" id="datarecv" disabled></input>'
                                    );
                                    if(spinner !== null && spinner !== undefined)
                                        spinner.stop();
                                    spinner = null;
                                },
                                ondata: function(data) {
                                    Janus.debug("We got data from the DataChannel! " + data);
                                    $('#datarecv').val(data);
                                },
                                oncleanup: function() {
                                    Janus.log(" ::: Got a cleanup notification :::");
                                    $('#waitingvideo').remove();
                                    $('#remotevideo').remove();
                                    $('#datarecv').remove();
                                    $('.no-video-container').remove();
                                    $('#bitrate').attr('disabled', true);
                                    $('#bitrateset').html('Bandwidth<span class="caret"></span>');
                                    $('#curbitrate').hide();
                                    if(bitrateTimer !== null && bitrateTimer !== undefined)
                                        clearInterval(bitrateTimer);
                                    bitrateTimer = null;
                                    $('#curres').hide();
                                    $('#simulcast').remove();
                                    simulcastStarted = false;
                                }
                            });
                        // Attach to Audio Bridge test plugin
                        janus.attach(
                            {
                                plugin: "janus.plugin.audiobridge",
                                opaqueId: opaqueId,
                                success: function(pluginHandle) {
                                    $('#details').remove();
                                    mixertest = pluginHandle;
                                    Janus.log("Plugin attached! (" + mixertest.getPlugin() + ", id=" + mixertest.getId() + ")");
                                },
                                error: function(error) {
                                    Janus.error("  -- Error attaching plugin...", error);
                                    bootbox.alert("Error attaching plugin... " + error);
                                },
                                consentDialog: function(on) {
                                    Janus.debug("Consent dialog should be " + (on ? "on" : "off") + " now");
                                    if(on) {
                                        // Darken screen and show hint
                                        $.blockUI({ 
                                            message: '<div><img src="img/up_arrow.png"/></div>',
                                            css: {
                                                border: 'none',
                                                padding: '15px',
                                                backgroundColor: 'transparent',
                                                color: '#aaa',
                                                top: '10px',
                                                left: (navigator.mozGetUserMedia ? '-100px' : '300px')
                                            } });
                                    } else {
                                        // Restore screen
                                        $.unblockUI();
                                    }
                                },
                                onmessage: function(msg, jsep) {
                                    Janus.debug(" ::: Got a message :::");
                                    Janus.debug(msg);
                                    var event = msg["audiobridge"];
                                    Janus.debug("Event: " + event);
                                    if(event != undefined && event != null) {
                                        if(event === "joined") {
                                            // Successfully joined, negotiate WebRTC now
                                            myid = msg["id"];
                                            Janus.log("Successfully joined room " + msg["room"] + " with ID " + myid);
                                            if(!webrtcUp) {
                                                webrtcUp = true;
                                                // Publish our stream
                                                mixertest.createOffer(
                                                    {
                                                        media: { video: false}, // This is an audio only room
                                                        success: function(jsep) {
                                                            Janus.debug("Got SDP!");
                                                            Janus.debug(jsep);
                                                            var publish = { "request": "configure", "muted": false };
                                                            mixertest.send({"message": publish, "jsep": jsep});
                                                        },
                                                        error: function(error) {
                                                            Janus.error("WebRTC error:", error);
                                                            bootbox.alert("WebRTC error... " + JSON.stringify(error));
                                                        }
                                                    });
                                            }
                                            // Any room participant?
                                            if(msg["participants"] !== undefined && msg["participants"] !== null) {
                                                var list = msg["participants"];
                                                Janus.debug("Got a list of participants:");
                                                Janus.debug(list);
                                                for(var f in list) {
                                                    var id = list[f]["id"];
                                                    var display = list[f]["display"];
                                                    var setup = list[f]["setup"];
                                                    var muted = list[f]["muted"];
                                                    Janus.debug("  >> [" + id + "] " + display + " (setup=" + setup + ", muted=" + muted + ")");
                                                    if($('#rp'+id).length === 0) {
                                                        // Add to the participants list
                                                        $('#list').append('<li id="rp'+id+'" class="list-group-item">'+display+
                                                            ' <i class="absetup fa fa-chain-broken"></i>' +
                                                            ' <i class="abmuted fa fa-microphone-slash"></i></li>');
                                                        $('#rp'+id + ' > i').hide();
                                                    }
                                                    if(muted === true || muted === "true")
                                                        $('#rp'+id + ' > i.abmuted').removeClass('hide').show();
                                                    else
                                                        $('#rp'+id + ' > i.abmuted').hide();
                                                    if(setup === true || setup === "true")
                                                        $('#rp'+id + ' > i.absetup').hide();
                                                    else
                                                        $('#rp'+id + ' > i.absetup').removeClass('hide').show();
                                                }
                                            }
                                        } else if(event === "roomchanged") {
                                            // The user switched to a different room
                                            myid = msg["id"];
                                            Janus.log("Moved to room " + msg["room"] + ", new ID: " + myid);
                                            // Any room participant?
                                            $('#list').empty();
                                            if(msg["participants"] !== undefined && msg["participants"] !== null) {
                                                var list = msg["participants"];
                                                Janus.debug("Got a list of participants:");
                                                Janus.debug(list);
                                                for(var f in list) {
                                                    var id = list[f]["id"];
                                                    var display = list[f]["display"];
                                                    var setup = list[f]["setup"];
                                                    var muted = list[f]["muted"];
                                                    Janus.debug("  >> [" + id + "] " + display + " (setup=" + setup + ", muted=" + muted + ")");
                                                    if($('#rp'+id).length === 0) {
                                                        // Add to the participants list
                                                        $('#list').append('<li id="rp'+id+'" class="list-group-item">'+display+
                                                            ' <i class="absetup fa fa-chain-broken"></i>' +
                                                            ' <i class="abmuted fa fa-microphone-slash"></i></li>');
                                                        $('#rp'+id + ' > i').hide();
                                                    }
                                                    if(muted === true || muted === "true")
                                                        $('#rp'+id + ' > i.abmuted').removeClass('hide').show();
                                                    else
                                                        $('#rp'+id + ' > i.abmuted').hide();
                                                    if(setup === true || setup === "true")
                                                        $('#rp'+id + ' > i.absetup').hide();
                                                    else
                                                        $('#rp'+id + ' > i.absetup').removeClass('hide').show();
                                                }
                                            }
                                        } else if(event === "destroyed") {
                                            // The room has been destroyed
                                            Janus.warn("The room has been destroyed!");
                                            bootbox.alert("The room has been destroyed", function() {
                                                window.location.reload();
                                            });
                                        } else if(event === "event") {
                                            if(msg["participants"] !== undefined && msg["participants"] !== null) {
                                                var list = msg["participants"];
                                                Janus.debug("Got a list of participants:");
                                                Janus.debug(list);
                                                for(var f in list) {
                                                    var id = list[f]["id"];
                                                    var display = list[f]["display"];
                                                    var setup = list[f]["setup"];
                                                    var muted = list[f]["muted"];
                                                    Janus.debug("  >> [" + id + "] " + display + " (setup=" + setup + ", muted=" + muted + ")");
                                                    if($('#rp'+id).length === 0) {
                                                        // Add to the participants list
                                                        $('#list').append('<li id="rp'+id+'" class="list-group-item">'+display+
                                                            ' <i class="absetup fa fa-chain-broken"></i>' +
                                                            ' <i class="abmuted fa fa-microphone-slash"></i></li>');
                                                        $('#rp'+id + ' > i').hide();
                                                    }
                                                    if(muted === true || muted === "true")
                                                        $('#rp'+id + ' > i.abmuted').removeClass('hide').show();
                                                    else
                                                        $('#rp'+id + ' > i.abmuted').hide();
                                                    if(setup === true || setup === "true")
                                                        $('#rp'+id + ' > i.absetup').hide();
                                                    else
                                                        $('#rp'+id + ' > i.absetup').removeClass('hide').show();
                                                }
                                            } else if(msg["error"] !== undefined && msg["error"] !== null) {
                                                if(msg["error_code"] === 485) {
                                                    // This is a "no such room" error: give a more meaningful description
                                                    bootbox.alert(
                                                        "<p>Server error: room <code>" + myroom + "</code> does not exist."
                                                    );
                                                } else {
                                                    bootbox.alert(msg["error"]);
                                                }
                                                return;
                                            }
                                            // Any new feed to attach to?
                                            if(msg["leaving"] !== undefined && msg["leaving"] !== null) {
                                                // One of the participants has gone away?
                                                var leaving = msg["leaving"];
                                                Janus.log("Participant left: " + leaving + " (we have " + $('#rp'+leaving).length + " elements with ID #rp" +leaving + ")");
                                                $('#rp'+leaving).remove();
                                            }
                                        }
                                    }
                                    if(jsep !== undefined && jsep !== null) {
                                        Janus.debug("Handling SDP as well...");
                                        Janus.debug(jsep);
                                        mixertest.handleRemoteJsep({jsep: jsep});
                                    }
                                },
                                onlocalstream: function(stream) {
                                    Janus.debug(" ::: Got a local stream :::");
                                    Janus.debug(stream);
                                    // We're not going to attach the local audio stream
                                    $('#audiojoin').hide();
                                    $('#room').removeClass('hide').show();
                                    $('#participant').removeClass('hide').html(myusername).show();
                                },
                                onremotestream: function(stream) {
                                    $('#room').removeClass('hide').show();
                                    var addButtons = false;
                                    if($('#roomaudio').length === 0) {
                                        addButtons = true;
                                        $('#mixedaudio').append('<audio class="rounded centered" id="roomaudio" width="100%" height="100%" autoplay/>');
                                    }
                                    Janus.attachMediaStream($('#roomaudio').get(0), stream);
                                    if(!addButtons)
                                        return;
                                    // Mute button
                                    audioenabled = true;
                                    $('#toggleaudio').click(
                                        function() {
                                            audioenabled = !audioenabled;
                                            if(audioenabled)
                                                $('#toggleaudio').html("Mute").removeClass("btn-success").addClass("btn-danger");
                                            else
                                                $('#toggleaudio').html("Unmute").removeClass("btn-danger").addClass("btn-success");
                                            mixertest.send({message: { "request": "configure", "muted": !audioenabled }});
                                        }).removeClass('hide').show();

                                },
                                oncleanup: function() {
                                    webrtcUp = false;
                                    Janus.log(" ::: Got a cleanup notification :::");
                                    $('#participant').empty().hide();
                                    $('#list').empty();
                                    $('#mixedaudio').empty();
                                    $('#room').hide();
                                }
                            });
                    },
                    error: function(error) {
                        Janus.error(error);
                        bootbox.alert(error, function() {
                            window.location.reload();
                        });
                    },
                    destroyed: function() {
                        window.location.reload();
                    }
                });
        });
    }});
});

function updateStreamsList() {
    $('#audiojoin').hide();
    $('#update-streams').unbind('click').addClass('fa-spin');
    var body = { "request": "list" };
    Janus.debug("Sending message (" + JSON.stringify(body) + ")");
    streaming.send({"message": body, success: function(result) {
        setTimeout(function() {
            $('#update-streams').removeClass('fa-spin').click(updateStreamsList);
        }, 500);
        if(result === null || result === undefined) {
            bootbox.alert("Got no response to our query for available streams");
            return;
        }
        if(result["list"] !== undefined && result["list"] !== null) {
            $('#streams').removeClass('hide').show();
            $('#streamslist').empty();
            $('#watch').attr('disabled', true).unbind('click');
            var list = result["list"];
            Janus.log("Got a list of available streams");
            Janus.debug(list);
            for(var mp in list) {
                Janus.debug("  >> [" + list[mp]["id"] + "] " + list[mp]["description"] + " (" + list[mp]["type"] + ")");
                $('#streamslist').append("<li><a href='#' id='" + list[mp]["id"] + "'>" + list[mp]["description"] + " (" + list[mp]["type"] + ")" + "</a></li>");
            }
            $('#streamslist a').unbind('click').click(function() {
                selectedStream = $(this).attr("id");
                $('#streamset').html($(this).html()).parent().removeClass('open');
                return false;

            });
            $('#watch').removeAttr('disabled').unbind('click').click(startStream);
        }
    }});
}

function startStream() {
    Janus.log("Selected video id #" + selectedStream);
    if(selectedStream === undefined || selectedStream === null) {
        bootbox.alert("Select a stream from the list");
        return;
    }
    $('#streamset').attr('disabled', true);
    $('#streamslist').attr('disabled', true);
    $('#watch').attr('disabled', true).unbind('click');
    var body = { "request": "watch", id: parseInt(selectedStream) };
    streaming.send({"message": body});
    // No remote video yet
    $('#stream').append('<video class="rounded centered" id="waitingvideo" width=320 height=240 />');
    if(spinner == null) {
        var target = document.getElementById('stream');
        spinner = new Spinner({top:100}).spin(target);
    } else {
        spinner.spin();
    }
    // Prepare the username registration
    myroom = parseInt(selectedStream);
    $('#audiojoin').removeClass('hide').show();
    $('#registernow').removeClass('hide').show();
    $('#register').click(registerUsername);
    $('#username').focus();
    $('#start').removeAttr('disabled').html("Stop")
        .click(function() {
            $(this).attr('disabled', true);
            janus.destroy();
        });
}

function stopStream() {
    $('#audiojoin').hide();
    $('#watch').attr('disabled', true).unbind('click');
    var body = { "request": "stop" };
    streaming.send({"message": body});
    streaming.hangup();
    $('#streamset').removeAttr('disabled');
    $('#streamslist').removeAttr('disabled');
    $('#watch').html("Watch or Listen").removeAttr('disabled').unbind('click').click(startStream);
    $('#status').empty().hide();
    $('#bitrate').attr('disabled', true);
    $('#bitrateset').html('Bandwidth<span class="caret"></span>');
    $('#curbitrate').hide();
    if(bitrateTimer !== null && bitrateTimer !== undefined)
        clearInterval(bitrateTimer);
    bitrateTimer = null;
    $('#curres').empty().hide();
    $('#simulcast').remove();
    simulcastStarted = false;
}

// Helpers to create Simulcast-related UI, if enabled
function addSimulcastButtons(temporal) {
    $('#curres').parent().append(
        '<div id="simulcast" class="btn-group-vertical btn-group-vertical-xs pull-right">' +
        '   <div class"row">' +
        '       <div class="btn-group btn-group-xs" style="width: 100%">' +
        '           <button id="sl-2" type="button" class="btn btn-primary" data-toggle="tooltip" title="Switch to higher quality" style="width: 33%">SL 2</button>' +
        '           <button id="sl-1" type="button" class="btn btn-primary" data-toggle="tooltip" title="Switch to normal quality" style="width: 33%">SL 1</button>' +
        '           <button id="sl-0" type="button" class="btn btn-primary" data-toggle="tooltip" title="Switch to lower quality" style="width: 34%">SL 0</button>' +
        '       </div>' +
        '   </div>' +
        '   <div class"row">' +
        '       <div class="btn-group btn-group-xs hide" style="width: 100%">' +
        '           <button id="tl-2" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 2" style="width: 34%">TL 2</button>' +
        '           <button id="tl-1" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 1" style="width: 33%">TL 1</button>' +
        '           <button id="tl-0" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 0" style="width: 33%">TL 0</button>' +
        '       </div>' +
        '   </div>' +
        '</div>');
    // Enable the simulcast selection buttons
    $('#sl-0').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Switching simulcast substream, wait for it... (lower quality)", null, {timeOut: 2000});
            if(!$('#sl-2').hasClass('btn-success'))
                $('#sl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#sl-1').hasClass('btn-success'))
                $('#sl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#sl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            streaming.send({message: { request: "configure", substream: 0 }});
        });
    $('#sl-1').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Switching simulcast substream, wait for it... (normal quality)", null, {timeOut: 2000});
            if(!$('#sl-2').hasClass('btn-success'))
                $('#sl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#sl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            if(!$('#sl-0').hasClass('btn-success'))
                $('#sl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", substream: 1 }});
        });
    $('#sl-2').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Switching simulcast substream, wait for it... (higher quality)", null, {timeOut: 2000});
            $('#sl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            if(!$('#sl-1').hasClass('btn-success'))
                $('#sl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#sl-0').hasClass('btn-success'))
                $('#sl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", substream: 2 }});
        });
    if(!temporal)   // No temporal layer support
        return;
    $('#tl-0').parent().removeClass('hide');
    $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping simulcast temporal layer, wait for it... (lowest FPS)", null, {timeOut: 2000});
            if(!$('#tl-2').hasClass('btn-success'))
                $('#tl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#tl-1').hasClass('btn-success'))
                $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#tl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            streaming.send({message: { request: "configure", temporal: 0 }});
        });
    $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping simulcast temporal layer, wait for it... (medium FPS)", null, {timeOut: 2000});
            if(!$('#tl-2').hasClass('btn-success'))
                $('#tl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-info');
            if(!$('#tl-0').hasClass('btn-success'))
                $('#tl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", temporal: 1 }});
        });
    $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping simulcast temporal layer, wait for it... (highest FPS)", null, {timeOut: 2000});
            $('#tl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            if(!$('#tl-1').hasClass('btn-success'))
                $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#tl-0').hasClass('btn-success'))
                $('#tl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", temporal: 2 }});
        });
}

function updateSimulcastButtons(substream, temporal) {
    // Check the substream
    if(substream === 0) {
        toastr.success("Switched simulcast substream! (lower quality)", null, {timeOut: 2000});
        $('#sl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#sl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#sl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
    } else if(substream === 1) {
        toastr.success("Switched simulcast substream! (normal quality)", null, {timeOut: 2000});
        $('#sl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#sl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#sl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    } else if(substream === 2) {
        toastr.success("Switched simulcast substream! (higher quality)", null, {timeOut: 2000});
        $('#sl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#sl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#sl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    }
    // Check the temporal layer
    if(temporal === 0) {
        toastr.success("Capped simulcast temporal layer! (lowest FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
    } else if(temporal === 1) {
        toastr.success("Capped simulcast temporal layer! (medium FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    } else if(temporal === 2) {
        toastr.success("Capped simulcast temporal layer! (highest FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    }
}

// Helpers to create SVC-related UI for a new viewer
function addSvcButtons() {
    if($('#svc').length > 0)
        return;
    $('#curres').parent().append(
        '<div id="svc" class="btn-group-vertical btn-group-vertical-xs pull-right">' +
        '   <div class"row">' +
        '       <div class="btn-group btn-group-xs" style="width: 100%">' +
        '           <button id="sl-1" type="button" class="btn btn-primary" data-toggle="tooltip" title="Switch to normal resolution" style="width: 50%">SL 1</button>' +
        '           <button id="sl-0" type="button" class="btn btn-primary" data-toggle="tooltip" title="Switch to low resolution" style="width: 50%">SL 0</button>' +
        '       </div>' +
        '   </div>' +
        '   <div class"row">' +
        '       <div class="btn-group btn-group-xs" style="width: 100%">' +
        '           <button id="tl-2" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 2 (high FPS)" style="width: 34%">TL 2</button>' +
        '           <button id="tl-1" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 1 (medium FPS)" style="width: 33%">TL 1</button>' +
        '           <button id="tl-0" type="button" class="btn btn-primary" data-toggle="tooltip" title="Cap to temporal layer 0 (low FPS)" style="width: 33%">TL 0</button>' +
        '       </div>' +
        '   </div>' +
        '</div>'
    );
    // Enable the VP8 simulcast selection buttons
    $('#sl-0').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Switching SVC spatial layer, wait for it... (low resolution)", null, {timeOut: 2000});
            if(!$('#sl-1').hasClass('btn-success'))
                $('#sl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#sl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            streaming.send({message: { request: "configure", spatial_layer: 0 }});
        });
    $('#sl-1').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Switching SVC spatial layer, wait for it... (normal resolution)", null, {timeOut: 2000});
            $('#sl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            if(!$('#sl-0').hasClass('btn-success'))
                $('#sl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", spatial_layer: 1 }});
        });
    $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping SVC temporal layer, wait for it... (lowest FPS)", null, {timeOut: 2000});
            if(!$('#tl-2').hasClass('btn-success'))
                $('#tl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#tl-1').hasClass('btn-success'))
                $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#tl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            streaming.send({message: { request: "configure", temporal_layer: 0 }});
        });
    $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping SVC temporal layer, wait for it... (medium FPS)", null, {timeOut: 2000});
            if(!$('#tl-2').hasClass('btn-success'))
                $('#tl-2').removeClass('btn-primary btn-info').addClass('btn-primary');
            $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-info');
            if(!$('#tl-0').hasClass('btn-success'))
                $('#tl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", temporal_layer: 1 }});
        });
    $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary')
        .unbind('click').click(function() {
            toastr.info("Capping SVC temporal layer, wait for it... (highest FPS)", null, {timeOut: 2000});
            $('#tl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
            if(!$('#tl-1').hasClass('btn-success'))
                $('#tl-1').removeClass('btn-primary btn-info').addClass('btn-primary');
            if(!$('#tl-0').hasClass('btn-success'))
                $('#tl-0').removeClass('btn-primary btn-info').addClass('btn-primary');
            streaming.send({message: { request: "configure", temporal_layer: 2 }});
        });
}

function updateSvcButtons(spatial, temporal) {
    // Check the spatial layer
    if(spatial === 0) {
        toastr.success("Switched SVC spatial layer! (lower resolution)", null, {timeOut: 2000});
        $('#sl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#sl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
    } else if(spatial === 1) {
        toastr.success("Switched SVC spatial layer! (normal resolution)", null, {timeOut: 2000});
        $('#sl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#sl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    }
    // Check the temporal layer
    if(temporal === 0) {
        toastr.success("Capped SVC temporal layer! (lowest FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-0').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
    } else if(temporal === 1) {
        toastr.success("Capped SVC temporal layer! (medium FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-1').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    } else if(temporal === 2) {
        toastr.success("Capped SVC temporal layer! (highest FPS)", null, {timeOut: 2000});
        $('#tl-2').removeClass('btn-primary btn-info btn-success').addClass('btn-success');
        $('#tl-1').removeClass('btn-primary btn-success').addClass('btn-primary');
        $('#tl-0').removeClass('btn-primary btn-success').addClass('btn-primary');
    }
}

function checkEnter(field, event) {
    var theCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
    if(theCode == 13) {
        registerUsername();
        return false;
    } else {
        return true;
    }
}

function registerUsername() {
    if($('#username').length === 0) {
        // Create fields to register
        $('#register').click(registerUsername);
        $('#username').focus();
    } else {
        // Try a registration
        $('#username').attr('disabled', true);
        $('#register').attr('disabled', true).unbind('click');
        var username = $('#username').val();
        if(username === "") {
            $('#you')
                .removeClass().addClass('label label-warning')
                .html("Insert your display name (e.g., pippo)");
            $('#username').removeAttr('disabled');
            $('#register').removeAttr('disabled').click(registerUsername);
            return;
        }
        if(/[^a-zA-Z0-9]/.test(username)) {
            $('#you')
                .removeClass().addClass('label label-warning')
                .html('Input is not alphanumeric');
            $('#username').removeAttr('disabled').val("");
            $('#register').removeAttr('disabled').click(registerUsername);
            return;
        }
        var register = { "request": "join", "room": myroom, "display": username };
        myusername = username;
        mixertest.send({"message": register});
    }
}