usermedia-shim.js
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webshim.register('usermedia-shim', function($, webshim, window, document, undefined, options){
"use strict";
var addMediaAPI;
var id = 0;
var streamCb = {};
var hasSwf = swfmini.hasFlashPlayerVersion('11.3');
var mediaelement = webshim.mediaelement;
var flashEvents = {
NotSupportedError: 1,
PermissionDeniedError: 1,
//not implemented yet
ConstraintNotSatisfiedError: 1,
onUserSuccess: 1
};
var noSource = function(){
return !$.prop(this, 'currentSrc') && !mediaelement.srces(this).length;
};
function wsGetUserMedia(constraints, successCb, failCb){
if(hasSwf){
if(!webshim.mediaelement.createSWF){
webshim.loader.loadList(['swfmini-embed']);
webshim.mediaelement.loadSwf = true;
webshim.reTest(['mediaelement-jaris'], true);
webshim.ready('mediaelement-jaris', function(){
createMediaRequest(constraints, successCb, failCb);
});
} else {
createMediaRequest(constraints, successCb, failCb);
}
} else {
failCb({name: 'NOT_SUPPORTED_ERROR'});
}
}
function createMediaRequest(constraints, successCb, failCb){
var src;
var media = getMediaCandidate();
if(!media){return;}
id++;
src = 'webshimstream:stream'+id;
streamCb[src] = {
src: src,
success: successCb,
fail: failCb
};
addMediaAPI();
/*
{ width: 650 },
{ width: { min: 650 }},
{ frameRate: 60 },
{ width: { max: 800 }},
{ facingMode: "user" }
*/
mediaelement.createSWF(media, {srcProp: src, streamrequest: true, type: 'jarisplayer/stream'});
}
function getMediaCandidate(){
var $media = $('video');
$media = $media.filter('.ws-usermedia');
if(!$media.length){
$media = $media.end();
}
if($media.length != 1){
$media = $media.filter(noSource);
}
if($media.length != 1){
webshim.error('for getUserMedia an empty video element has to be already in the DOM. If you provide multiple empty videos. please mark your suggested video using the "ws-usermedia" class.');
}
return $media[0];
}
function LocalMediaStream(data, api, id){
data._cTNow = Date.now();
data._cTID = false;
webshim.defineProperties(this, {
_swf: {
value: api,
enumerable: false
},
_data: {
value: data,
enumerable: false
},
_wsStreamId: {
value: id,
enumerable: false
}
});
}
LocalMediaStream.prototype = {
stop: function(){
if(this._data._cTID){
clearInterval(this._data._cTID);
}
mediaelement.queueSwfMethod(this._data._elem, 'api_detach', [], this._data);
this._data.ended = true;
$(this._data._elem).trigger('ended');
}
};
webshim.usermedia = {
attach: function(elem, canPlaySrc, data){
var $media;
if(data._usermedia == canPlaySrc.srcProp){
mediaelement.queueSwfMethod(data._elem, 'api_attach', [], data);
$media = $(data._elem).trigger('loadstart');
data._cTID = setInterval(function(){
if(data.ended){
clearInterval(data._cTID);
} else if(!data.paused){
data.currentTime = (Date.now() - data._cTNow) / 1000;
$media.triggerHandler('timeupdate');
}
}, 250);
if(!data.paused){
mediaelement.queueSwfMethod(data._elem, 'api_play', [], data);
}
} else {
webshim.error('something went wrong');
}
},
request: function(elem, canPlaySrc, data){
data._usermedia = canPlaySrc.srcProp;
if(!options.inline && !$(elem).hasClass('ws-inlineusermedia')){
$(data.api).css({position: 'fixed', top: 0, left: 0, width: '100%', height: 150, zIndex: '999999'});
} else {
$(data.api).css({position: 'relative', zIndex: '999999'});
}
}
};
addMediaAPI = function(){
if(!webshim.mediaelement.createSWF){return;}
addMediaAPI = $.noop;
var revert = function(data){
setTimeout(function(){
$(data.api).css({position: '', top: '', left: '', width: '', height: '', zIndex: ''});
if($.prop(data._elem, 'controls')){
$.prop(data._elem, 'controls', true);
}
}, 50);
};
var fail = function(jaris, data){
revert(data);
streamCb[data._usermedia].fail({name: jaris.type});
};
$.extend(mediaelement.onEvent, {
NotSupportedError: fail,
PermissionDeniedError: fail,
//not implemented yet
ConstraintNotSatisfiedError: fail,
onUserSuccess: function(jaris, data){
revert(data);
streamCb[data._usermedia].success(new LocalMediaStream(data, data.api, data._usermedia));
}
});
};
webshim.ready('mediaelement-jaris', addMediaAPI);
webshim.getUserMedia = wsGetUserMedia;
navigator.wsGetUserMedia = wsGetUserMedia;
webshim.isReady('usermedia-api', true);
});