| 1 | package com.jeroenwijering.models { |
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| 2 | |
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| 3 | |
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| 4 | import com.jeroenwijering.events.*; |
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| 5 | import com.jeroenwijering.models.AbstractModel; |
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| 6 | import com.jeroenwijering.player.Model; |
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| 7 | import com.jeroenwijering.utils.*; |
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| 8 | |
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| 9 | import flash.events.*; |
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| 10 | import flash.media.*; |
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| 11 | import flash.net.*; |
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| 12 | import flash.utils.*; |
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| 13 | |
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| 14 | |
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| 15 | /** |
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| 16 | * Wrapper for playback of video streamed over RTMP. Can playback MP4, FLV, MP3, AAC and live streams. |
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| 17 | * Server-specific features are: |
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| 18 | * - The SecureToken functionality of Wowza (with the 'token' flahvar). |
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| 19 | * - Load balancing with SMIL files (with the 'rtmp.loadbalance=true' flashvar). |
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| 20 | **/ |
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| 21 | public class RTMPModel extends AbstractModel { |
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| 22 | |
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| 23 | |
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| 24 | /** Save if the bandwidth checkin already occurs. **/ |
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| 25 | private var bwcheck:Boolean; |
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| 26 | /** Interval for bw checking - with dynamic streaming. **/ |
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| 27 | private var bwinterval:Number; |
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| 28 | /** NetConnection object for setup of the video stream. **/ |
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| 29 | private var connection:NetConnection; |
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| 30 | /** Is dynamic streaming possible. **/ |
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| 31 | private var dynamics:Boolean; |
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| 32 | /** The currently playing RTMP stream. **/ |
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| 33 | private var file:String; |
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| 34 | /** ID for the position interval. **/ |
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| 35 | private var interval:Number; |
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| 36 | /** Loader instance that loads the XML file. **/ |
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| 37 | private var loader:URLLoader; |
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| 38 | /** NetStream instance that handles the stream IO. **/ |
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| 39 | private var stream:NetStream; |
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| 40 | /** Interval ID for subscription pings. **/ |
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| 41 | private var subscribe:Number; |
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| 42 | /** Offset in seconds of the last seek. **/ |
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| 43 | private var timeoffset:Number = 0; |
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| 44 | /** Sound control object. **/ |
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| 45 | private var transformer:SoundTransform; |
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| 46 | /** Save the location of the XML redirect. **/ |
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| 47 | private var smil:String; |
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| 48 | /** Save that a stream is streaming. **/ |
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| 49 | private var streaming:Boolean; |
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| 50 | /** Save that we're transitioning. **/ |
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| 51 | private var transitioning:Boolean; |
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| 52 | /** Video object to be instantiated. **/ |
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| 53 | private var video:Video; |
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| 54 | |
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| 55 | /** Constructor; sets up the connection and display. **/ |
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| 56 | public function RTMPModel(mod:Model):void { |
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| 57 | super(mod); |
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| 58 | connection = new NetConnection(); |
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| 59 | connection.addEventListener(NetStatusEvent.NET_STATUS,statusHandler); |
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| 60 | connection.addEventListener(SecurityErrorEvent.SECURITY_ERROR,errorHandler); |
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| 61 | connection.addEventListener(IOErrorEvent.IO_ERROR,errorHandler); |
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| 62 | connection.addEventListener(AsyncErrorEvent.ASYNC_ERROR,errorHandler); |
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| 63 | connection.objectEncoding = ObjectEncoding.AMF0; |
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| 64 | connection.client = new NetClient(this); |
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| 65 | loader = new URLLoader(); |
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| 66 | loader.addEventListener(Event.COMPLETE, loaderHandler); |
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| 67 | loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR,errorHandler); |
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| 68 | loader.addEventListener(IOErrorEvent.IO_ERROR,errorHandler); |
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| 69 | transformer = new SoundTransform(); |
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| 70 | video = new Video(320,240); |
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| 71 | video.smoothing = model.config['smoothing']; |
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| 72 | addChild(video); |
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| 73 | }; |
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| 74 | |
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| 75 | |
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| 76 | /** Check if the player can use dynamic streaming (server versions and no load balancing). **/ |
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| 77 | private function checkDynamic(str:String):void { |
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| 78 | var clt:Number = Number(model.config['client'].split(' ')[2].split(',')[0]); |
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| 79 | var mjr:Number = Number(str.split(',')[0]); |
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| 80 | var mnr:Number = Number(str.split(',')[1]); |
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| 81 | if(!model.config['rtmp.loadbalance'] && !item['rtmp.loadbalance'] && |
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| 82 | clt > 9 && (mjr > 3 || (mjr == 3 && mnr > 4))) { |
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| 83 | dynamics = true; |
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| 84 | } else { |
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| 85 | dynamics = false; |
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| 86 | } |
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| 87 | }; |
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| 88 | |
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| 89 | |
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| 90 | /** Try subscribing to livestream **/ |
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| 91 | private function doSubscribe(id:String):void { |
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| 92 | connection.call("FCSubscribe",null,id); |
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| 93 | }; |
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| 94 | |
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| 95 | |
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| 96 | /** Catch security errors. **/ |
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| 97 | private function errorHandler(evt:ErrorEvent):void { |
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| 98 | stop(); |
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| 99 | model.sendEvent(ModelEvent.ERROR,{message:evt.text}); |
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| 100 | }; |
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| 101 | |
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| 102 | |
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| 103 | /** Bandwidth checking for dynamic streaming. **/ |
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| 104 | private function getBandwidth():void { |
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| 105 | try { |
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| 106 | var bdw:Number = Math.round(stream.info.maxBytesPerSecond*8/1024); |
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| 107 | } catch(err:Error) { |
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| 108 | clearInterval(bwinterval); |
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| 109 | return; |
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| 110 | } |
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| 111 | if(bdw < 100 || bdw > 99999) { |
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| 112 | return; |
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| 113 | } else { |
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| 114 | bdw = Math.round(model.config['bandwidth']/2+bdw/2); |
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| 115 | } |
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| 116 | model.config['bandwidth'] = bdw; |
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| 117 | Configger.saveCookie('bandwidth',bdw); |
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| 118 | if(item['levels'] && getLevel() != model.config['level']) { |
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| 119 | swap(); |
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| 120 | } |
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| 121 | }; |
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| 122 | |
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| 123 | |
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| 124 | /** Extract the correct rtmp syntax from the file string. **/ |
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| 125 | private function getID(url:String):String { |
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| 126 | var ext:String = url.substr(-4); |
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| 127 | if(url.indexOf(':') > -1) { |
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| 128 | return url; |
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| 129 | } else if(ext == '.mp3') { |
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| 130 | return 'mp3:'+url.substr(0,url.length-4); |
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| 131 | } else if (ext=='.mp4' || ext=='.mov' || ext=='.m4v' || ext=='.aac' || ext=='.m4a' || ext=='.f4v') { |
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| 132 | return 'mp4:'+url; |
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| 133 | } else if (ext == '.flv') { |
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| 134 | return url.substr(0,url.length-4); |
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| 135 | } else { |
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| 136 | return url; |
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| 137 | } |
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| 138 | }; |
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| 139 | |
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| 140 | |
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| 141 | /** Return which level best fits the display width and connection bandwidth. **/ |
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| 142 | private function getLevel():Number { |
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| 143 | var lvl:Number = item['levels'].length-1; |
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| 144 | for (var i:Number=0; i<item['levels'].length; i++) { |
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| 145 | if(model.config['width'] >= item['levels'][i].width && |
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| 146 | model.config['bandwidth'] >= item['levels'][i].bitrate) { |
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| 147 | lvl = i; |
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| 148 | break; |
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| 149 | } |
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| 150 | } |
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| 151 | return lvl; |
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| 152 | }; |
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| 153 | |
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| 154 | |
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| 155 | /** Load content. **/ |
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| 156 | override public function load(itm:Object):void { |
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| 157 | item = itm; |
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| 158 | position = 0; |
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| 159 | if(item['levels']) { loadLevelSync(); } |
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| 160 | timeoffset = item['start']; |
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| 161 | clearInterval(interval); |
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| 162 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.BUFFERING}); |
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| 163 | if(model.config['rtmp.loadbalance'] || item['rtmp.loadbalance']) { |
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| 164 | smil = item['file']; |
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| 165 | loader.load(new URLRequest(smil)); |
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| 166 | } else { |
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| 167 | connection.connect(item['streamer']); |
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| 168 | } |
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| 169 | }; |
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| 170 | |
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| 171 | |
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| 172 | /** Make sure the selected level is actually the item['file']. **/ |
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| 173 | private function loadLevelSync() { |
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| 174 | for (var i:Number=0; i<item['levels'].length; i++) { |
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| 175 | if(item['file'] == item['levels'][i].url ) { |
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| 176 | model.config['level'] = i; |
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| 177 | break; |
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| 178 | } |
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| 179 | } |
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| 180 | }; |
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| 181 | |
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| 182 | |
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| 183 | |
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| 184 | /** Get the streamer / file from the loadbalancing XML. **/ |
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| 185 | private function loaderHandler(evt:Event):void { |
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| 186 | var xml:XML = XML(evt.currentTarget.data); |
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| 187 | item['streamer'] = xml.children()[0].children()[0].@base.toString(); |
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| 188 | item['file'] = xml.children()[1].children()[0].@src.toString(); |
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| 189 | connection.connect(item['streamer']); |
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| 190 | }; |
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| 191 | |
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| 192 | |
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| 193 | /** Get metadata information from netstream class. **/ |
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| 194 | public function onClientData(dat:Object):void { |
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| 195 | if(dat.type == 'fcsubscribe') { |
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| 196 | if(dat.code == "NetStream.Play.StreamNotFound" ) { |
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| 197 | model.sendEvent(ModelEvent.ERROR,{message:"Subscription failed: "+item['file']}); |
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| 198 | } else if(dat.code == "NetStream.Play.Start") { |
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| 199 | setStream(); |
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| 200 | } |
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| 201 | clearInterval(subscribe); |
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| 202 | } |
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| 203 | if(dat.width) { |
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| 204 | video.width = dat.width; |
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| 205 | video.height = dat.height; |
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| 206 | super.resize(); |
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| 207 | } |
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| 208 | if(dat.duration && !item['duration']) { |
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| 209 | item['duration'] = dat.duration; |
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| 210 | } |
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| 211 | if(dat.type == 'complete') { |
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| 212 | clearInterval(interval); |
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| 213 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.COMPLETED}); |
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| 214 | } |
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| 215 | if(dat.type == 'close') { |
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| 216 | stop(); |
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| 217 | } |
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| 218 | if(dat.type == 'bandwidth') { |
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| 219 | model.config['bandwidth'] = dat.bandwidth; |
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| 220 | Configger.saveCookie('bandwidth',dat.bandwidth); |
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| 221 | setStream(); |
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| 222 | } |
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| 223 | if(dat.code == 'NetStream.Play.TransitionComplete') { |
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| 224 | transitioning = false; |
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| 225 | } |
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| 226 | model.sendEvent(ModelEvent.META,dat); |
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| 227 | }; |
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| 228 | |
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| 229 | |
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| 230 | /** Pause playback. **/ |
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| 231 | override public function pause():void { |
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| 232 | stream.pause(); |
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| 233 | clearInterval(interval); |
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| 234 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.PAUSED}); |
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| 235 | if(stream && item['duration'] == 0 && !dynamics) { stop(); } |
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| 236 | }; |
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| 237 | |
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| 238 | |
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| 239 | /** Resume playing. **/ |
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| 240 | override public function play():void { |
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| 241 | stream.resume(); |
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| 242 | interval = setInterval(positionInterval,100); |
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| 243 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.PLAYING}); |
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| 244 | }; |
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| 245 | |
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| 246 | |
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| 247 | /** Interval for the position progress. **/ |
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| 248 | private function positionInterval():void { |
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| 249 | var pos:Number = Math.round((stream.time)*10)/10; |
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| 250 | var bfr:Number = stream.bufferLength/stream.bufferTime; |
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| 251 | if(bfr < 0.25 && pos < item['duration']-5 && model.config['state'] != ModelStates.BUFFERING) { |
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| 252 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.BUFFERING}); |
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| 253 | stream.bufferTime = model.config['bufferlength']; |
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| 254 | } else if (bfr > 1 && model.config['state'] != ModelStates.PLAYING) { |
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| 255 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.PLAYING}); |
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| 256 | stream.bufferTime = model.config['bufferlength']*4; |
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| 257 | } |
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| 258 | if(model.config['state'] != ModelStates.PLAYING) { |
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| 259 | return; |
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| 260 | } |
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| 261 | if(pos < item['duration']) { |
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| 262 | model.sendEvent(ModelEvent.TIME,{position:pos,duration:item['duration']}); |
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| 263 | position = pos; |
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| 264 | } else if (position > 0 && item['duration'] > 0) { |
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| 265 | stream.pause(); |
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| 266 | clearInterval(interval); |
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| 267 | if(stream && item['duration'] == 0) { stop(); } |
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| 268 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.COMPLETED}); |
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| 269 | } |
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| 270 | }; |
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| 271 | |
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| 272 | |
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| 273 | /** Check if the level must be switched on resize. **/ |
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| 274 | override public function resize():void { |
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| 275 | super.resize(); |
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| 276 | if(item['levels'] && getLevel() != model.config['level'] && |
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| 277 | model.config['state'] == ModelStates.PLAYING) { |
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| 278 | if(dynamics) { |
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| 279 | swap(); |
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| 280 | } else { |
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| 281 | seek(position); |
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| 282 | } |
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| 283 | } |
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| 284 | }; |
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| 285 | |
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| 286 | |
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| 287 | /** Seek to a new position. **/ |
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| 288 | override public function seek(pos:Number):void { |
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| 289 | position = 0; |
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| 290 | timeoffset = pos; |
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| 291 | transitioning = false; |
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| 292 | clearInterval(interval); |
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| 293 | clearInterval(bwinterval); |
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| 294 | if(item['levels'] && getLevel() != model.config['level']) { |
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| 295 | model.config['level'] = getLevel(); |
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| 296 | item['file'] = item['levels'][model.config['level']].url; |
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| 297 | if(model.config['rtmp.loadbalance'] || item['rtmp.loadbalance']) { |
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| 298 | item['start'] = pos; |
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| 299 | load(item); |
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| 300 | return; |
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| 301 | } |
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| 302 | } |
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| 303 | if(model.config['state'] == ModelStates.PAUSED) { |
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| 304 | stream.resume(); |
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| 305 | } |
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| 306 | if(model.config['rtmp.subscribe'] || item['rtmp.subscribe']) { |
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| 307 | stream.play(getID(item['file'])); |
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| 308 | } else if(model.config['rtmp.dvr'] || item['rtmp.dvr']) { |
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| 309 | stream.play(getID(item['file']),0,-1); |
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| 310 | } else { |
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| 311 | if(file != item['file']) { |
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| 312 | file = item['file']; |
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| 313 | stream.play(getID(item['file'])); |
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| 314 | } |
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| 315 | if(timeoffset) { stream.seek(timeoffset); } |
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| 316 | if(dynamics) { |
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| 317 | bwinterval = setInterval(getBandwidth,2000); |
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| 318 | } |
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| 319 | } |
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| 320 | streaming = true; |
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| 321 | interval = setInterval(positionInterval,100); |
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| 322 | }; |
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| 323 | |
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| 324 | |
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| 325 | /** Start the netstream object. **/ |
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| 326 | private function setStream():void { |
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| 327 | stream = new NetStream(connection); |
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| 328 | stream.checkPolicyFile = true; |
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| 329 | stream.addEventListener(NetStatusEvent.NET_STATUS,statusHandler); |
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| 330 | stream.addEventListener(IOErrorEvent.IO_ERROR,errorHandler); |
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| 331 | stream.addEventListener(AsyncErrorEvent.ASYNC_ERROR,errorHandler); |
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| 332 | stream.bufferTime = model.config['bufferlength']; |
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| 333 | stream.client = new NetClient(this); |
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| 334 | video.attachNetStream(stream); |
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| 335 | model.config['mute'] == true ? volume(0): volume(model.config['volume']); |
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| 336 | seek(timeoffset); |
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| 337 | resize(); |
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| 338 | }; |
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| 339 | |
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| 340 | |
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| 341 | /** Receive NetStream status updates. **/ |
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| 342 | private function statusHandler(evt:NetStatusEvent):void { |
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| 343 | switch(evt.info.code) { |
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| 344 | case 'NetConnection.Connect.Success': |
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| 345 | if(evt.info.secureToken != undefined) { |
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| 346 | connection.call("secureTokenResponse",null, |
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| 347 | TEA.decrypt(evt.info.secureToken,model.config['token'])); |
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| 348 | } |
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| 349 | if(evt.info.data) { checkDynamic(evt.info.data.version); } |
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| 350 | if(model.config['rtmp.subscribe'] || item['rtmp.subscribe']) { |
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| 351 | subscribe = setInterval(doSubscribe,1000,getID(item['file'])); |
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| 352 | return; |
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| 353 | } else { |
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| 354 | if(item['levels']) { |
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| 355 | if(dynamics || bwcheck) { |
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| 356 | setStream(); |
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| 357 | } else { |
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| 358 | bwcheck = true; |
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| 359 | connection.call('checkBandwidth',null); |
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| 360 | } |
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| 361 | } else { |
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| 362 | setStream(); |
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| 363 | } |
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| 364 | if(item['file'].substr(-4) == '.mp3' || item['file'].substr(0,4) == 'mp3:') { |
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| 365 | connection.call("getStreamLength",new Responder(streamlengthHandler),getID(item['file'])); |
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| 366 | } |
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| 367 | } |
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| 368 | break; |
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| 369 | case 'NetStream.Seek.Notify': |
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| 370 | clearInterval(interval); |
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| 371 | interval = setInterval(positionInterval,100); |
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| 372 | break; |
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| 373 | case 'NetConnection.Connect.Rejected': |
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| 374 | try { |
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| 375 | if(evt.info.ex.code == 302) { |
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| 376 | item['streamer'] = evt.info.ex.redirect; |
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| 377 | setTimeout(load,100,item); |
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| 378 | return; |
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| 379 | } |
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| 380 | } catch (err:Error) { |
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| 381 | stop(); |
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| 382 | var msg:String = evt.info.code; |
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| 383 | if(evt.info['description']) { msg = evt.info['description']; } |
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| 384 | stop(); |
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| 385 | model.sendEvent(ModelEvent.ERROR,{message:msg}); |
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| 386 | } |
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| 387 | break; |
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| 388 | case 'NetStream.Failed': |
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| 389 | case 'NetStream.Play.StreamNotFound': |
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| 390 | if(!streaming) { |
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| 391 | onClientData({type:'complete'}); |
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| 392 | } else { |
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| 393 | stop(); |
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| 394 | model.sendEvent(ModelEvent.ERROR,{message:"Stream not found: "+item['file']}); |
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| 395 | } |
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| 396 | break; |
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| 397 | case 'NetConnection.Connect.Failed': |
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| 398 | stop(); |
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| 399 | model.sendEvent(ModelEvent.ERROR,{message:"Server not found: "+item['streamer']}); |
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| 400 | break; |
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| 401 | case 'NetStream.Play.Stop': |
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| 402 | if(model.config['rtmp.dvr']) { stop(); } |
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| 403 | break; |
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| 404 | case 'NetStream.Play.UnpublishNotify': |
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| 405 | stop(); |
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| 406 | break; |
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| 407 | } |
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| 408 | model.sendEvent('META',evt.info); |
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| 409 | }; |
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| 410 | |
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| 411 | |
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| 412 | |
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| 413 | /** Destroy the stream. **/ |
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| 414 | override public function stop():void { |
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| 415 | if(stream && stream.time) { stream.close(); } |
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| 416 | streaming = false; |
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| 417 | file = undefined; |
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| 418 | connection.close(); |
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| 419 | clearInterval(interval); |
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| 420 | clearInterval(bwinterval); |
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| 421 | position = 0; |
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| 422 | timeoffset = item['start']; |
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| 423 | model.sendEvent(ModelEvent.STATE,{newstate:ModelStates.IDLE}); |
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| 424 | if(smil) { |
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| 425 | item['file'] = smil; |
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| 426 | } |
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| 427 | }; |
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| 428 | |
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| 429 | |
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| 430 | /** Get the streamlength returned from the connection. **/ |
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| 431 | private function streamlengthHandler(len:Number):void { |
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| 432 | Logger.log({duration:len}); |
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| 433 | if(len && !item['duration']) { item['duration'] = len; } |
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| 434 | }; |
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| 435 | |
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| 436 | |
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| 437 | /** Dynamically switch streams **/ |
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| 438 | private function swap():void { |
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| 439 | if(transitioning == true) { |
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| 440 | Logger.log('transition to level '+getLevel()+' cancelled'); |
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| 441 | } else { |
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| 442 | transitioning = true; |
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| 443 | model.config['level'] = getLevel(); |
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| 444 | Logger.log('transition to level '+getLevel()+' initiated'); |
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| 445 | item['file'] = file = item['levels'][model.config['level']].url; |
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| 446 | var nso:NetStreamPlayOptions = new NetStreamPlayOptions(); |
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| 447 | nso.streamName = getID(item['file']); |
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| 448 | nso.transition = NetStreamPlayTransitions.SWITCH; |
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| 449 | stream.play2(nso); |
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| 450 | } |
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| 451 | }; |
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| 452 | |
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| 453 | |
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| 454 | /** Set the volume level. **/ |
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| 455 | override public function volume(vol:Number):void { |
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| 456 | transformer.volume = vol/100; |
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| 457 | if(stream) { |
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| 458 | stream.soundTransform = transformer; |
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| 459 | } |
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| 460 | }; |
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| 461 | |
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| 462 | |
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| 463 | }; |
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| 464 | |
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| 465 | |
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| 466 | } |
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