settermjd/podcast-site

package htmlelements
{
  import flash.display.Sprite;
  import flash.media.Video;
  import flash.media.SoundTransform;
  import org.mangui.hls.HLS;
  import org.mangui.hls.HLSSettings;
  import org.mangui.hls.event.HLSEvent;
  import org.mangui.hls.constant.HLSPlayStates;
  import org.mangui.hls.utils.Log;

public class HLSMediaElement extends Sprite implements IMediaElement {

    private var _element:FlashMediaElement;
    private var _playqueued:Boolean = false;
    private var _autoplay:Boolean = true;
    private var _preload:String = "";
    private var _hls:HLS;
    private var _url:String;
    private var _video:Video;
    private var _hlsState:String = HLSPlayStates.IDLE;

  // event values
  private var _position:Number = 0;
  private var _duration:Number = 0;
  private var _framerate:Number;
  private var _isManifestLoaded:Boolean = false;
  private var _isPaused:Boolean = true;
  private var _isEnded:Boolean = false;
  private var _volume:Number = 1;
  private var _isMuted:Boolean = false;

  private var _bytesLoaded:Number = 0;
  private var _bytesTotal:Number = 0;
  private var _bufferedTime:Number = 0;
  private var _bufferEmpty:Boolean = false;
  private var _bufferingChanged:Boolean = false;
  private var _seekOffset:Number = 0;


  private var _videoWidth:Number = -1;
  private var _videoHeight:Number = -1;


    public function HLSMediaElement(element:FlashMediaElement, autoplay:Boolean, preload:String, timerRate:Number, startVolume:Number)
    {
      _element = element;
      _autoplay = autoplay;
      _volume = startVolume;
      _preload = preload;
      _video = new Video();
      addChild(_video);
      _hls = new HLS();
      _hls.addEventListener(HLSEvent.PLAYBACK_COMPLETE,_completeHandler);
      _hls.addEventListener(HLSEvent.ERROR,_errorHandler);
      _hls.addEventListener(HLSEvent.MANIFEST_LOADED,_manifestHandler);
      _hls.addEventListener(HLSEvent.MEDIA_TIME,_mediaTimeHandler);
      _hls.addEventListener(HLSEvent.PLAYBACK_STATE,_stateHandler);
      _hls.stream.soundTransform = new SoundTransform(_volume);
      _video.attachNetStream(_hls.stream);
    }

    private function _completeHandler(event:HLSEvent):void {
      _isEnded = true;
      _isPaused = false;
      sendEvent(HtmlMediaEvent.ENDED);
    };

    private function _errorHandler(event:HLSEvent):void {
    };

    private function _manifestHandler(event:HLSEvent):void {
      _duration = event.levels[0].duration;
      _videoWidth = event.levels[0].width;
      _videoHeight = event.levels[0].height;
      _isManifestLoaded = true;
      _hls.stage = _video.stage;
      sendEvent(HtmlMediaEvent.LOADEDMETADATA);
      sendEvent(HtmlMediaEvent.CANPLAY);
      if(_autoplay || _playqueued) {
        _playqueued = false;
        _hls.stream.play();
      }
    };

    private function _mediaTimeHandler(event:HLSEvent):void {
      _position = event.mediatime.position;
      _duration = event.mediatime.duration;
      _bufferedTime = event.mediatime.buffer+event.mediatime.position;
      sendEvent(HtmlMediaEvent.PROGRESS);
      sendEvent(HtmlMediaEvent.TIMEUPDATE);
    };

    private function _stateHandler(event:HLSEvent):void {
      _hlsState = event.state;
      //Log.txt("state:"+ _hlsState);
      switch(event.state) {
          case HLSPlayStates.IDLE:
            break;
          case HLSPlayStates.PAUSED_BUFFERING:
          case HLSPlayStates.PLAYING_BUFFERING:
            break;
          case HLSPlayStates.PLAYING:
            _isPaused = false;
            _isEnded = false;
            _video.visible = true;
            sendEvent(HtmlMediaEvent.LOADEDDATA);
            sendEvent(HtmlMediaEvent.PLAY);
            sendEvent(HtmlMediaEvent.PLAYING);
            break;
          case HLSPlayStates.PAUSED:
            _isPaused = true;
            _isEnded = false;
            sendEvent(HtmlMediaEvent.PAUSE);
            sendEvent(HtmlMediaEvent.CANPLAY);
            break;
      }
    };

  public function get video():Video {
    return _video;
  }

  public function get videoHeight():Number {
    return _videoHeight;
  }

  public function get videoWidth():Number {
    return _videoWidth;
  }

    public function play():void {
      //Log.txt("HLSMediaElement:play");
      if(!_isManifestLoaded) {
        _playqueued = true;
        return;
      }
      if (_hlsState == HLSPlayStates.PAUSED || _hlsState == HLSPlayStates.PAUSED_BUFFERING) {
        _hls.stream.resume();
      } else {
        _hls.stream.play();
      }
    }

    public function pause():void {
      if(!_isManifestLoaded)
        return;
      //Log.txt("HLSMediaElement:pause");
      _hls.stream.pause();
    }

    public function load():void{
      //Log.txt("HLSMediaElement:load");        
      if(_url) {
        sendEvent(HtmlMediaEvent.LOADSTART);
        _hls.load(_url);
      }
    }

    public function stop():void{
      _hls.stream.close();
      _video.clear();
      _isManifestLoaded = false;
      _duration = 0;
      _position = 0;
      _playqueued = false;
      sendEvent(HtmlMediaEvent.STOP);
    }

    public function setSrc(url:String):void{
      //Log.txt("HLSMediaElement:setSrc:"+url);
      stop();
      _url = url;
      _hls.load(_url);
    }

    public function setSize(width:Number, height:Number):void{
    _video.width = width;
    _video.height = height;
    }

    public function setCurrentTime(pos:Number):void{
      if(!_isManifestLoaded)
        return;
      sendEvent(HtmlMediaEvent.SEEKING);
      _hls.stream.seek(pos);
    }

    public function setVolume(vol:Number):void{
      _volume = vol;
      _isMuted = (_volume == 0);
      _hls.stream.soundTransform = new SoundTransform(vol);
      sendEvent(HtmlMediaEvent.VOLUMECHANGE);
    }

    public function getVolume():Number {
      if(_isMuted) {
        return 0;
      } else {
        return _volume;
      }
    }

    public function setMuted(muted:Boolean):void {

      // ignore if already set
      if ( (muted && _isMuted) || (!muted && !_isMuted))
        return;

      if (muted) {
        _hls.stream.soundTransform = new SoundTransform(0);
      } else {
        setVolume(_volume);
      }

      _isMuted = muted;
    }

    public function duration():Number{
      return _duration;
    }

    public function currentTime():Number{
      return _position;
    }

    public function currentProgress():Number{
    }

  private function sendEvent(eventName:String):void {

    // build JSON
    var values:String =
      "duration:" + _duration +
        ",framerate:" + _hls.stream.currentFPS +
        ",currentTime:" + _position +
        ",muted:" + _isMuted +
        ",paused:" + _isPaused +
        ",ended:" + _isEnded +
        ",volume:" + _volume +
        ",src:\"" + _url + "\"" +
        ",bytesTotal:" + Math.round(1000*_duration) +
        ",bufferedBytes:" + Math.round(1000*(_position+_bufferedTime)) +
        ",bufferedTime:" + _bufferedTime +
        ",videoWidth:" + _videoWidth +
        ",videoHeight:" + _videoHeight +
        "";
    _element.sendEvent(eventName, values);
  }

  }
}