移动端任意动作触发视频播放

视频播放【必须 .ts 格式的视频】（⚠️ 微信微博）安卓苹果都支持任意触发播放

vue用法：

1. 复制文章下面的jsmpegjs引入到页面

2. template代码

<div @touchstart="videoPlay" @touchend="plays">
    <!-- touchend 事件触发 -->
    <canvas ref="canvas" width="750" height="1452"></canvas>
  </div>

3. script标签代码

<script>
export default {
  name:'Video_play',
  data(){
    return {
      player:null
    }
  },
  mounted(){
    let canvas = this.$refs.canvas
    this.player = new JSMpeg.Player('./v.ts',{canvas,loop: false});
  },
  methods:{
    videoPlay(){
      // 视频音乐播放需要触发
      this.player.audioOut.unlock(() => {
        console.log('audio');
      });
    },
    plays(){
      setTimeout(() => {
        this.player.play()
      }, 200)
    }
  }
}
</script>

jsmpegjs  :

var JSMpeg = {
  Player: null,
  VideoElement: null,
  BitBuffer: null,
  Source: {},
  Demuxer: {},
  Decoder: {},
  Renderer: {},
  AudioOutput: {},
  Now: function() {
      return window.performance ? window.performance.now() / 1e3: Date.now() / 1e3
  },
  CreateVideoElements: function() {
      var elements = document.querySelectorAll(".jsmpeg");
      for (var i = 0; i < elements.length; i++) {
          new JSMpeg.VideoElement(elements[i])
      }
  },
  Fill: function(array, value) {
      if (array.fill) {
          array.fill(value)
      } else {
          for (var i = 0; i < array.length; i++) {
              array[i] = value
          }
      }
  }
};
if (document.readyState === "complete") {
  JSMpeg.CreateVideoElements()
} else {
  document.addEventListener("DOMContentLoaded", JSMpeg.CreateVideoElements)
}
JSMpeg.VideoElement = function() {
  "use strict";
  var VideoElement = function(element) {
      var url = element.dataset.url;
      if (!url) {
          throw "VideoElement has no `data-url` attribute"
      }
      var addStyles = function(element, styles) {
          for (var name in styles) {
              element.style[name] = styles[name]
          }
      };
      this.container = element;
      addStyles(this.container, {
          display: "inline-block",
          position: "relative",
          minWidth: "80px",
          minHeight: "80px"
      });
      this.canvas = document.createElement("canvas");
      this.canvas.width = 960;
      this.canvas.height = 540;
      addStyles(this.canvas, {
          display: "block",
           "100%"
      });
      this.container.appendChild(this.canvas);
      this.playButton = document.createElement("div");
      this.playButton.innerHTML = VideoElement.PLAY_BUTTON;
      addStyles(this.playButton, {
          zIndex: 2,
          position: "absolute",
          top: "0",
          bottom: "0",
          left: "0",
          right: "0",
          maxWidth: "75px",
          maxHeight: "75px",
          margin: "auto",
          opacity: "0.7",
          cursor: "pointer"
      });
      this.container.appendChild(this.playButton);
      var options = {
          canvas: this.canvas
      };
      for (var option in element.dataset) {
          try {
              options[option] = JSON.parse(element.dataset[option])
          } catch(err) {
              options[option] = element.dataset[option]
          }
      }
      this.player = new JSMpeg.Player(url, options);
      if (options.poster && !options.autoplay && !this.player.options.streaming) {
          options.decodeFirstFrame = false;
          this.poster = new Image;
          this.poster.src = options.poster;
          this.poster.addEventListener("load", this.posterLoaded);
          addStyles(this.poster, {
              display: "block",
              zIndex: 1,
              position: "absolute",
              top: 0,
              left: 0,
              bottom: 0,
              right: 0
          });
          this.container.appendChild(this.poster)
      }
      if (!this.player.options.streaming) {
          this.container.addEventListener("click", this.onClick.bind(this))
      }
      if (options.autoplay || this.player.options.streaming) {
          this.playButton.style.display = "none"
      }
      if (this.player.audioOut && !this.player.audioOut.unlocked) {
          var unlockAudioElement = this.container;
          if (options.autoplay || this.player.options.streaming) {
              this.unmuteButton = document.createElement("div");
              this.unmuteButton.innerHTML = VideoElement.UNMUTE_BUTTON;
              addStyles(this.unmuteButton, {
                  zIndex: 2,
                  position: "absolute",
                  bottom: "10px",
                  right: "20px",
                   "75px",
                  height: "75px",
                  margin: "auto",
                  opacity: "0.7",
                  cursor: "pointer"
              });
              this.container.appendChild(this.unmuteButton);
              unlockAudioElement = this.unmuteButton
          }
          this.unlockAudioBound = this.onUnlockAudio.bind(this, unlockAudioElement);
          unlockAudioElement.addEventListener("touchstart", this.unlockAudioBound, false);
          unlockAudioElement.addEventListener("click", this.unlockAudioBound, true)
      }
  };
  VideoElement.prototype.onUnlockAudio = function(element, ev) {
      if (this.unmuteButton) {
          ev.preventDefault();
          ev.stopPropagation()
      }
      this.player.audioOut.unlock(function() {
          if (this.unmuteButton) {
              this.unmuteButton.style.display = "none"
          }
          element.removeEventListener("touchstart", this.unlockAudioBound);
          element.removeEventListener("click", this.unlockAudioBound)
      }.bind(this))
  };
  VideoElement.prototype.onClick = function(ev) {
      if (this.player.isPlaying) {
          this.player.pause();
          this.playButton.style.display = "block"
      } else {
          this.player.play();
          this.playButton.style.display = "none";
          if (this.poster) {
              this.poster.style.display = "none"
          }
      }
  };
  VideoElement.PLAY_BUTTON = '<svg style="max- 75px; max-height: 75px;" ' + 'viewBox="0 0 200 200" alt="Play video">' + '<circle cx="100" cy="100" r="90" fill="none" ' + 'stroke-width="15" stroke="#fff"/>' + '<polygon points="70, 55 70, 145 145, 100" fill="#fff"/>' + "</svg>";
  VideoElement.UNMUTE_BUTTON = '<svg style="max- 75px; max-height: 75px;" viewBox="0 0 75 75">' + '<polygon class="audio-speaker" stroke="none" fill="#fff" ' + 'points="39,13 22,28 6,28 6,47 21,47 39,62 39,13"/>' + '<g stroke="#fff" stroke-width="5">' + '<path d="M 49,50 69,26"/>' + '<path d="M 69,50 49,26"/>' + "</g>" + "</svg>";
  return VideoElement
} ();
JSMpeg.Player = function() {
  "use strict";
  var Player = function(url, options) {
      this.options = options || {};
      if (options.source) {
          this.source = new options.source(url, options);
          options.streaming = !!this.source.streaming
      } else if (url.match(/^wss?:///)) {
          this.source = new JSMpeg.Source.WebSocket(url, options);
          options.streaming = true
      } else if (options.progressive !== false) {
          this.source = new JSMpeg.Source.AjaxProgressive(url, options);
          options.streaming = false
      } else {
          this.source = new JSMpeg.Source.Ajax(url, options);
          options.streaming = false
      }
      this.maxAudioLag = options.maxAudioLag || .25;
      this.loop = options.loop !== false;
      this.autoplay = !!options.autoplay || options.streaming;
      this.demuxer = new JSMpeg.Demuxer.TS(options);
      this.source.connect(this.demuxer);
      if (options.video !== false) {
          this.video = new JSMpeg.Decoder.MPEG1Video(options);
          this.renderer = !options.disableGl && JSMpeg.Renderer.WebGL.IsSupported() ? new JSMpeg.Renderer.WebGL(options) : new JSMpeg.Renderer.Canvas2D(options);
          this.demuxer.connect(JSMpeg.Demuxer.TS.STREAM.VIDEO_1, this.video);
          this.video.connect(this.renderer)
      }
      if (options.audio !== false && JSMpeg.AudioOutput.WebAudio.IsSupported()) {
          this.audio = new JSMpeg.Decoder.MP2Audio(options);
          this.audioOut = new JSMpeg.AudioOutput.WebAudio(options);
          this.demuxer.connect(JSMpeg.Demuxer.TS.STREAM.AUDIO_1, this.audio);
          this.audio.connect(this.audioOut)
      }
      Object.defineProperty(this, "currentTime", {
          get: this.getCurrentTime,
          set: this.setCurrentTime
      });
      Object.defineProperty(this, "volume", {
          get: this.getVolume,
          set: this.setVolume
      });
      this.unpauseOnShow = false;
      if (options.pauseWhenHidden !== false) {
          document.addEventListener("visibilitychange", this.showHide.bind(this))
      }
      this.source.start();
      if (this.autoplay) {
          this.play()
      }
  };
  Player.prototype.showHide = function(ev) {
      if (document.visibilityState === "hidden") {
          this.unpauseOnShow = this.wantsToPlay;
          this.pause()
      } else if (this.unpauseOnShow) {
          this.play()
      }
  };
  Player.prototype.play = function(ev) {
      this.animationId = requestAnimationFrame(this.update.bind(this));
      this.wantsToPlay = true
  };
  Player.prototype.pause = function(ev) {
      cancelAnimationFrame(this.animationId);
      this.wantsToPlay = false;
      this.isPlaying = false;
      if (this.audio && this.audio.canPlay) {
          this.audioOut.stop();
          this.seek(this.currentTime)
      }
  };
  Player.prototype.getVolume = function() {
      return this.audioOut ? this.audioOut.volume: 0
  };
  Player.prototype.setVolume = function(volume) {
      if (this.audioOut) {
          this.audioOut.volume = volume
      }
  };
  Player.prototype.stop = function(ev) {
      this.pause();
      this.seek(0);
      if (this.video && this.options.decodeFirstFrame !== false) {
          this.video.decode()
      }
  };
  Player.prototype.destroy = function() {
      this.pause();
      this.source.destroy();
      this.renderer.destroy();
      this.audioOut.destroy()
  };
  Player.prototype.seek = function(time) {
      var startOffset = this.audio && this.audio.canPlay ? this.audio.startTime: this.video.startTime;
      if (this.video) {
          this.video.seek(time + startOffset)
      }
      if (this.audio) {
          this.audio.seek(time + startOffset)
      }
      this.startTime = JSMpeg.Now() - time
  };
  Player.prototype.getCurrentTime = function() {
      return this.audio && this.audio.canPlay ? this.audio.currentTime - this.audio.startTime: this.video.currentTime - this.video.startTime
  };
  Player.prototype.setCurrentTime = function(time) {
      this.seek(time)
  };
  Player.prototype.update = function() {
      this.animationId = requestAnimationFrame(this.update.bind(this));
      if (!this.source.established) {
          if (this.renderer) {
              this.renderer.renderProgress(this.source.progress)
          }
          return
      }
      if (!this.isPlaying) {
          this.isPlaying = true;
          this.startTime = JSMpeg.Now() - this.currentTime
      }
      if (this.options.streaming) {
          this.updateForStreaming()
      } else {
          this.updateForStaticFile()
      }
  };
  Player.prototype.updateForStreaming = function() {
      if (this.video) {
          this.video.decode()
      }
      if (this.audio) {
          var decoded = false;
          do {
              if (this.audioOut.enqueuedTime > this.maxAudioLag) {
                  this.audioOut.resetEnqueuedTime();
                  this.audioOut.enabled = false
              }
              decoded = this.audio.decode()
          } while ( decoded );
          this.audioOut.enabled = true
      }
  };
  Player.prototype.updateForStaticFile = function() {
      var notEnoughData = false,
      headroom = 0;
      if (this.audio && this.audio.canPlay) {
          while (!notEnoughData && this.audio.decodedTime - this.audio.currentTime < .25) {
              notEnoughData = !this.audio.decode()
          }
          if (this.video && this.video.currentTime < this.audio.currentTime) {
              notEnoughData = !this.video.decode()
          }
          headroom = this.demuxer.currentTime - this.audio.currentTime
      } else if (this.video) {
          var targetTime = JSMpeg.Now() - this.startTime + this.video.startTime,
          lateTime = targetTime - this.video.currentTime,
          frameTime = 1 / this.video.frameRate;
          if (this.video && lateTime > 0) {
              if (lateTime > frameTime * 2) {
                  this.startTime += lateTime
              }
              notEnoughData = !this.video.decode()
          }
          headroom = this.demuxer.currentTime - targetTime
      }
      this.source.resume(headroom);
      if (notEnoughData && this.source.completed) {
          if (this.loop) {
              this.seek(0)
          } else {
              this.pause()
          }
      }
  };
  return Player
} ();
JSMpeg.BitBuffer = function() {
  "use strict";
  var BitBuffer = function(bufferOrLength, mode) {
      if (typeof bufferOrLength === "object") {
          this.bytes = bufferOrLength instanceof Uint8Array ? bufferOrLength: new Uint8Array(bufferOrLength);
          this.byteLength = this.bytes.length
      } else {
          this.bytes = new Uint8Array(bufferOrLength || 1024 * 1024);
          this.byteLength = 0
      }
      this.mode = mode || BitBuffer.MODE.EXPAND;
      this.index = 0
  };
  BitBuffer.prototype.resize = function(size) {
      var newBytes = new Uint8Array(size);
      if (this.byteLength !== 0) {
          this.byteLength = Math.min(this.byteLength, size);
          newBytes.set(this.bytes, 0, this.byteLength)
      }
      this.bytes = newBytes;
      this.index = Math.min(this.index, this.byteLength << 3)
  };
  BitBuffer.prototype.evict = function(sizeNeeded) {
      var bytePos = this.index >> 3,
      available = this.bytes.length - this.byteLength;
      if (this.index === this.byteLength << 3 || sizeNeeded > available + bytePos) {
          this.byteLength = 0;
          this.index = 0;
          return
      } else if (bytePos === 0) {
          return
      }
      if (this.bytes.copyWithin) {
          this.bytes.copyWithin(0, bytePos, this.byteLength)
      } else {
          this.bytes.set(this.bytes.subarray(bytePos, this.byteLength))
      }
      this.byteLength = this.byteLength - bytePos;
      this.index -= bytePos << 3;
      return
  };
  BitBuffer.prototype.write = function(buffers) {
      var isArrayOfBuffers = typeof buffers[0] === "object",
      totalLength = 0,
      available = this.bytes.length - this.byteLength;
      if (isArrayOfBuffers) {
          var totalLength = 0;
          for (var i = 0; i < buffers.length; i++) {
              totalLength += buffers[i].byteLength
          }
      } else {
          totalLength = buffers.byteLength
      }
      if (totalLength > available) {
          if (this.mode === BitBuffer.MODE.EXPAND) {
              var newSize = Math.max(this.bytes.length * 2, totalLength - available);
              this.resize(newSize)
          } else {
              this.evict(totalLength)
          }
      }
      if (isArrayOfBuffers) {
          for (var i = 0; i < buffers.length; i++) {
              this.appendSingleBuffer(buffers[i])
          }
      } else {
          this.appendSingleBuffer(buffers)
      }
  };
  BitBuffer.prototype.appendSingleBuffer = function(buffer) {
      buffer = buffer instanceof Uint8Array ? buffer: new Uint8Array(buffer);
      this.bytes.set(buffer, this.byteLength);
      this.byteLength += buffer.length
  };
  BitBuffer.prototype.findNextStartCode = function() {
      for (var i = this.index + 7 >> 3; i < this.byteLength; i++) {
          if (this.bytes[i] == 0 && this.bytes[i + 1] == 0 && this.bytes[i + 2] == 1) {
              this.index = i + 4 << 3;
              return this.bytes[i + 3]
          }
      }
      this.index = this.byteLength << 3;
      return - 1
  };
  BitBuffer.prototype.findStartCode = function(code) {
      var current = 0;
      while (true) {
          current = this.findNextStartCode();
          if (current === code || current === -1) {
              return current
          }
      }
      return - 1
  };
  BitBuffer.prototype.nextBytesAreStartCode = function() {
      var i = this.index + 7 >> 3;
      return i >= this.byteLength || this.bytes[i] == 0 && this.bytes[i + 1] == 0 && this.bytes[i + 2] == 1
  };
  BitBuffer.prototype.peek = function(count) {
      var offset = this.index;
      var value = 0;
      while (count) {
          var currentByte = this.bytes[offset >> 3],
          remaining = 8 - (offset & 7),
          read = remaining < count ? remaining: count,
          shift = remaining - read,
          mask = 255 >> 8 - read;
          value = value << read | (currentByte & mask << shift) >> shift;
          offset += read;
          count -= read
      }
      return value
  };
  BitBuffer.prototype.read = function(count) {
      var value = this.peek(count);
      this.index += count;
      return value
  };
  BitBuffer.prototype.skip = function(count) {
      return this.index += count
  };
  BitBuffer.prototype.rewind = function(count) {
      this.index = Math.max(this.index - count, 0)
  };
  BitBuffer.prototype.has = function(count) {
      return (this.byteLength << 3) - this.index >= count
  };
  BitBuffer.MODE = {
      EVICT: 1,
      EXPAND: 2
  };
  return BitBuffer
} ();
JSMpeg.Source.Ajax = function() {
  "use strict";
  var AjaxSource = function(url, options) {
      this.url = url;
      this.destination = null;
      this.request = null;
      this.completed = false;
      this.established = false;
      this.progress = 0
  };
  AjaxSource.prototype.connect = function(destination) {
      this.destination = destination
  };
  AjaxSource.prototype.start = function() {
      this.request = new XMLHttpRequest;
      this.request.onreadystatechange = function() {
          if (this.request.readyState === this.request.DONE && this.request.status === 200) {
              this.onLoad(this.request.response)
          }
      }.bind(this);
      this.request.onprogress = this.onProgress.bind(this);
      this.request.open("GET", this.url);
      this.request.responseType = "arraybuffer";
      this.request.send()
  };
  AjaxSource.prototype.resume = function(secondsHeadroom) {};
  AjaxSource.prototype.destroy = function() {
      this.request.abort()
  };
  AjaxSource.prototype.onProgress = function(ev) {
      this.progress = ev.loaded / ev.total
  };
  AjaxSource.prototype.onLoad = function(data) {
      this.established = true;
      this.completed = true;
      this.progress = 1;
      if (this.destination) {
          this.destination.write(data)
      }
  };
  return AjaxSource
} ();
JSMpeg.Source.AjaxProgressive = function() {
  "use strict";
  var AjaxProgressiveSource = function(url, options) {
      this.url = url;
      this.destination = null;
      this.request = null;
      this.completed = false;
      this.established = false;
      this.progress = 0;
      this.fileSize = 0;
      this.loadedSize = 0;
      this.chunkSize = options.chunkSize || 1024 * 1024;
      this.isLoading = false;
      this.loadStartTime = 0;
      this.throttled = options.throttled !== false;
      this.aborted = false
  };
  AjaxProgressiveSource.prototype.connect = function(destination) {
      this.destination = destination
  };
  AjaxProgressiveSource.prototype.start = function() {
      this.request = new XMLHttpRequest;
      this.request.onreadystatechange = function() {
          if (this.request.readyState === this.request.DONE) {
              this.fileSize = parseInt(this.request.getResponseHeader("Content-Length"));
              this.loadNextChunk()
          }
      }.bind(this);
      this.request.onprogress = this.onProgress.bind(this);
      this.request.open("HEAD", this.url);
      this.request.send()
  };
  AjaxProgressiveSource.prototype.resume = function(secondsHeadroom) {
      if (this.isLoading || !this.throttled) {
          return
      }
      var worstCaseLoadingTime = this.loadTime * 8 + 2;
      if (worstCaseLoadingTime > secondsHeadroom) {
          this.loadNextChunk()
      }
  };
  AjaxProgressiveSource.prototype.destroy = function() {
      this.request.abort();
      this.aborted = true
  };
  AjaxProgressiveSource.prototype.loadNextChunk = function() {
      var start = this.loadedSize,
      end = Math.min(this.loadedSize + this.chunkSize - 1, this.fileSize - 1);
      if (start >= this.fileSize || this.aborted) {
          this.completed = true;
          return
      }
      this.isLoading = true;
      this.loadStartTime = JSMpeg.Now();
      this.request = new XMLHttpRequest;
      this.request.onreadystatechange = function() {
          if (this.request.readyState === this.request.DONE && this.request.status >= 200 && this.request.status < 300) {
              this.onChunkLoad(this.request.response)
          } else if (this.request.readyState === this.request.DONE) {
              if (this.loadFails++<3) {
                  this.loadNextChunk()
              }
          }
      }.bind(this);
      if (start === 0) {
          this.request.onprogress = this.onProgress.bind(this)
      }
      this.request.open("GET", this.url + "?" + start + "-" + end);
      this.request.setRequestHeader("Range", "bytes=" + start + "-" + end);
      this.request.responseType = "arraybuffer";
      this.request.send()
  };
  AjaxProgressiveSource.prototype.onProgress = function(ev) {
      this.progress = ev.loaded / ev.total
  };
  AjaxProgressiveSource.prototype.onChunkLoad = function(data) {
      this.established = true;
      this.progress = 1;
      this.loadedSize += data.byteLength;
      this.loadFails = 0;
      this.isLoading = false;
      if (this.destination) {
          this.destination.write(data)
      }
      this.loadTime = JSMpeg.Now() - this.loadStartTime;
      if (!this.throttled) {
          this.loadNextChunk()
      }
  };
  return AjaxProgressiveSource
} ();
JSMpeg.Source.WebSocket = function() {
  "use strict";
  var WSSource = function(url, options) {
      this.url = url;
      this.socket = null;
      this.callbacks = {
          connect: [],
          data: []
      };
      this.destination = null;
      this.reconnectInterval = options.reconnectInterval !== undefined ? options.reconnectInterval: 5;
      this.shouldAttemptReconnect = !!this.reconnectInterval;
      this.completed = false;
      this.established = false;
      this.progress = 0;
      this.reconnectTimeoutId = 0
  };
  WSSource.prototype.connect = function(destination) {
      this.destination = destination
  };
  WSSource.prototype.destroy = function() {
      clearTimeout(this.reconnectTimeoutId);
      this.shouldAttemptReconnect = false;
      this.socket.close()
  };
  WSSource.prototype.start = function() {
      this.shouldAttemptReconnect = !!this.reconnectInterval;
      this.progress = 0;
      this.established = false;
      this.socket = new WebSocket(this.url);
      this.socket.binaryType = "arraybuffer";
      this.socket.onmessage = this.onMessage.bind(this);
      this.socket.onopen = this.onOpen.bind(this);
      this.socket.onerror = this.onClose.bind(this);
      this.socket.onclose = this.onClose.bind(this)
  };
  WSSource.prototype.resume = function(secondsHeadroom) {};
  WSSource.prototype.onOpen = function() {
      this.progress = 1;
      this.established = true
  };
  WSSource.prototype.onClose = function() {
      if (this.shouldAttemptReconnect) {
          clearTimeout(this.reconnectTimeoutId);
          this.reconnectTimeoutId = setTimeout(function() {
              this.start()
          }.bind(this), this.reconnectInterval * 1e3)
      }
  };
  WSSource.prototype.onMessage = function(ev) {
      if (this.destination) {
          this.destination.write(ev.data)
      }
  };
  return WSSource
} ();
JSMpeg.Demuxer.TS = function() {
  "use strict";
  var TS = function(options) {
      this.bits = null;
      this.leftoverBytes = null;
      this.guessVideoFrameEnd = true;
      this.pidsToStreamIds = {};
      this.pesPacketInfo = {};
      this.startTime = 0;
      this.currentTime = 0
  };
  TS.prototype.connect = function(streamId, destination) {
      this.pesPacketInfo[streamId] = {
          destination: destination,
          currentLength: 0,
          totalLength: 0,
          pts: 0,
          buffers: []
      }
  };
  TS.prototype.write = function(buffer) {
      if (this.leftoverBytes) {
          var totalLength = buffer.byteLength + this.leftoverBytes.byteLength;
          this.bits = new JSMpeg.BitBuffer(totalLength);
          this.bits.write([this.leftoverBytes, buffer])
      } else {
          this.bits = new JSMpeg.BitBuffer(buffer)
      }
      while (this.bits.has(188 << 3) && this.parsePacket()) {}
      var leftoverCount = this.bits.byteLength - (this.bits.index >> 3);
      this.leftoverBytes = leftoverCount > 0 ? this.bits.bytes.subarray(this.bits.index >> 3) : null
  };
  TS.prototype.parsePacket = function() {
      if (this.bits.read(8) !== 71) {
          if (!this.resync()) {
              return false
          }
      }
      var end = (this.bits.index >> 3) + 187;
      var transportError = this.bits.read(1),
      payloadStart = this.bits.read(1),
      transportPriority = this.bits.read(1),
      pid = this.bits.read(13),
      transportScrambling = this.bits.read(2),
      adaptationField = this.bits.read(2),
      continuityCounter = this.bits.read(4);
      var streamId = this.pidsToStreamIds[pid];
      if (payloadStart && streamId) {
          var pi = this.pesPacketInfo[streamId];
          if (pi && pi.currentLength) {
              this.packetComplete(pi)
          }
      }
      if (adaptationField & 1) {
          if (adaptationField & 2) {
              var adaptationFieldLength = this.bits.read(8);
              this.bits.skip(adaptationFieldLength << 3)
          }
          if (payloadStart && this.bits.nextBytesAreStartCode()) {
              this.bits.skip(24);
              streamId = this.bits.read(8);
              this.pidsToStreamIds[pid] = streamId;
              var packetLength = this.bits.read(16);
              this.bits.skip(8);
              var ptsDtsFlag = this.bits.read(2);
              this.bits.skip(6);
              var headerLength = this.bits.read(8);
              var payloadBeginIndex = this.bits.index + (headerLength << 3);
              var pi = this.pesPacketInfo[streamId];
              if (pi) {
                  var pts = 0;
                  if (ptsDtsFlag & 2) {
                      this.bits.skip(4);
                      var p32_30 = this.bits.read(3);
                      this.bits.skip(1);
                      var p29_15 = this.bits.read(15);
                      this.bits.skip(1);
                      var p14_0 = this.bits.read(15);
                      this.bits.skip(1);
                      pts = (p32_30 * 1073741824 + p29_15 * 32768 + p14_0) / 9e4;
                      this.currentTime = pts;
                      if (this.startTime === -1) {
                          this.startTime = pts
                      }
                  }
                  var payloadLength = packetLength ? packetLength - headerLength - 3 : 0;
                  this.packetStart(pi, pts, payloadLength)
              }
              this.bits.index = payloadBeginIndex
          }
          if (streamId) {
              var pi = this.pesPacketInfo[streamId];
              if (pi) {
                  var start = this.bits.index >> 3;
                  var complete = this.packetAddData(pi, start, end);
                  var hasPadding = !payloadStart && adaptationField & 2;
                  if (complete || this.guessVideoFrameEnd && hasPadding) {
                      this.packetComplete(pi)
                  }
              }
          }
      }
      this.bits.index = end << 3;
      return true
  };
  TS.prototype.resync = function() {
      if (!this.bits.has(188 * 6 << 3)) {
          return false
      }
      var byteIndex = this.bits.index >> 3;
      for (var i = 0; i < 187; i++) {
          if (this.bits.bytes[byteIndex + i] === 71) {
              var foundSync = true;
              for (var j = 1; j < 5; j++) {
                  if (this.bits.bytes[byteIndex + i + 188 * j] !== 71) {
                      foundSync = false;
                      break
                  }
              }
              if (foundSync) {
                  this.bits.index = byteIndex + i + 1 << 3;
                  return true
              }
          }
      }
      console.warn("JSMpeg: Possible garbage data. Skipping.");
      this.bits.skip(187 << 3);
      return false
  };
  TS.prototype.packetStart = function(pi, pts, payloadLength) {
      pi.totalLength = payloadLength;
      pi.currentLength = 0;
      pi.pts = pts
  };
  TS.prototype.packetAddData = function(pi, start, end) {
      pi.buffers.push(this.bits.bytes.subarray(start, end));
      pi.currentLength += end - start;
      var complete = pi.totalLength !== 0 && pi.currentLength >= pi.totalLength;
      return complete
  };
  TS.prototype.packetComplete = function(pi) {
      pi.destination.write(pi.pts, pi.buffers);
      pi.totalLength = 0;
      pi.currentLength = 0;
      pi.buffers = []
  };
  TS.STREAM = {
      PACK_HEADER: 186,
      SYSTEM_HEADER: 187,
      PROGRAM_MAP: 188,
      PRIVATE_1: 189,
      PADDING: 190,
      PRIVATE_2: 191,
      AUDIO_1: 192,
      VIDEO_1: 224,
      DIRECTORY: 255
  };
  return TS
} ();
JSMpeg.Decoder.Base = function() {
  "use strict";
  var BaseDecoder = function(options) {
      this.destination = null;
      this.canPlay = false;
      this.collectTimestamps = !options.streaming;
      this.timestamps = [];
      this.timestampIndex = 0;
      this.startTime = 0;
      this.decodedTime = 0;
      Object.defineProperty(this, "currentTime", {
          get: this.getCurrentTime
      })
  };
  BaseDecoder.prototype.connect = function(destination) {
      this.destination = destination
  };
  BaseDecoder.prototype.write = function(pts, buffers) {
      if (this.collectTimestamps) {
          if (this.timestamps.length === 0) {
              this.startTime = pts;
              this.decodedTime = pts
          }
          this.timestamps.push({
              index: this.bits.byteLength << 3,
              time: pts
          })
      }
      this.bits.write(buffers);
      this.canPlay = true
  };
  BaseDecoder.prototype.seek = function(time) {
      if (!this.collectTimestamps) {
          return
      }
      this.timestampIndex = 0;
      for (var i = 0; i < this.timestamps.length; i++) {
          if (this.timestamps[i].time > time) {
              break
          }
          this.timestampIndex = i
      }
      var ts = this.timestamps[this.timestampIndex];
      if (ts) {
          this.bits.index = ts.index;
          this.decodedTime = ts.time
      } else {
          this.bits.index = 0;
          this.decodedTime = this.startTime
      }
  };
  BaseDecoder.prototype.decode = function() {
      this.advanceDecodedTime(0)
  };
  BaseDecoder.prototype.advanceDecodedTime = function(seconds) {
      if (this.collectTimestamps) {
          var newTimestampIndex = -1;
          for (var i = this.timestampIndex; i < this.timestamps.length; i++) {
              if (this.timestamps[i].index > this.bits.index) {
                  break
              }
              newTimestampIndex = i
          }
          if (newTimestampIndex !== -1 && newTimestampIndex !== this.timestampIndex) {
              this.timestampIndex = newTimestampIndex;
              this.decodedTime = this.timestamps[this.timestampIndex].time;
              return
          }
      }
      this.decodedTime += seconds
  };
  BaseDecoder.prototype.getCurrentTime = function() {
      return this.decodedTime
  };
  return BaseDecoder
} ();
JSMpeg.Decoder.MPEG1Video = function() {
  "use strict";
  var MPEG1 = function(options) {
      JSMpeg.Decoder.Base.call(this, options);
      var bufferSize = options.videoBufferSize || 512 * 1024;
      var bufferMode = options.streaming ? JSMpeg.BitBuffer.MODE.EVICT: JSMpeg.BitBuffer.MODE.EXPAND;
      this.bits = new JSMpeg.BitBuffer(bufferSize, bufferMode);
      this.customIntraQuantMatrix = new Uint8Array(64);
      this.customNonIntraQuantMatrix = new Uint8Array(64);
      this.blockData = new Int32Array(64);
      this.currentFrame = 0;
      this.decodeFirstFrame = options.decodeFirstFrame !== false
  };
  MPEG1.prototype = Object.create(JSMpeg.Decoder.Base.prototype);
  MPEG1.prototype.constructor = MPEG1;
  MPEG1.prototype.write = function(pts, buffers) {
      JSMpeg.Decoder.Base.prototype.write.call(this, pts, buffers);
      if (!this.hasSequenceHeader) {
          if (this.bits.findStartCode(MPEG1.START.SEQUENCE) === -1) {
              return false
          }
          this.decodeSequenceHeader();
          if (this.decodeFirstFrame) {
              this.decode()
          }
      }
  };
  MPEG1.prototype.decode = function() {
      if (!this.hasSequenceHeader) {
          return false
      }
      if (this.bits.findStartCode(MPEG1.START.PICTURE) === -1) {
          var bufferedBytes = this.bits.byteLength - (this.bits.index >> 3);
          return false
      }
      this.decodePicture();
      this.advanceDecodedTime(1 / this.frameRate);
      return true
  };
  MPEG1.prototype.readHuffman = function(codeTable) {
      var state = 0;
      do {
          state = codeTable[state + this.bits.read(1)]
      } while ( state >= 0 && codeTable [ state ] !== 0);
      return codeTable[state + 2]
  };
  MPEG1.prototype.frameRate = 30;
  MPEG1.prototype.decodeSequenceHeader = function() {
      var newWidth = this.bits.read(12),
      newHeight = this.bits.read(12);
      this.bits.skip(4);
      this.frameRate = MPEG1.PICTURE_RATE[this.bits.read(4)];
      this.bits.skip(18 + 1 + 10 + 1);
      if (newWidth !== this.width || newHeight !== this.height) {
          this.width = newWidth;
          this.height = newHeight;
          this.initBuffers();
          if (this.destination) {
              this.destination.resize(newWidth, newHeight)
          }
      }
      if (this.bits.read(1)) {
          for (var i = 0; i < 64; i++) {
              this.customIntraQuantMatrix[MPEG1.ZIG_ZAG[i]] = this.bits.read(8)
          }
          this.intraQuantMatrix = this.customIntraQuantMatrix
      }
      if (this.bits.read(1)) {
          for (var i = 0; i < 64; i++) {
              var idx = MPEG1.ZIG_ZAG[i];
              this.customNonIntraQuantMatrix[idx] = this.bits.read(8)
          }
          this.nonIntraQuantMatrix = this.customNonIntraQuantMatrix
      }
      this.hasSequenceHeader = true
  };
  MPEG1.prototype.initBuffers = function() {
      this.intraQuantMatrix = MPEG1.DEFAULT_INTRA_QUANT_MATRIX;
      this.nonIntraQuantMatrix = MPEG1.DEFAULT_NON_INTRA_QUANT_MATRIX;
      this.mbWidth = this.width + 15 >> 4;
      this.mbHeight = this.height + 15 >> 4;
      this.mbSize = this.mbWidth * this.mbHeight;
      this.codedWidth = this.mbWidth << 4;
      this.codedHeight = this.mbHeight << 4;
      this.codedSize = this.codedWidth * this.codedHeight;
      this.halfWidth = this.mbWidth << 3;
      this.halfHeight = this.mbHeight << 3;
      this.currentY = new Uint8ClampedArray(this.codedSize);
      this.currentY32 = new Uint32Array(this.currentY.buffer);
      this.currentCr = new Uint8ClampedArray(this.codedSize >> 2);
      this.currentCr32 = new Uint32Array(this.currentCr.buffer);
      this.currentCb = new Uint8ClampedArray(this.codedSize >> 2);
      this.currentCb32 = new Uint32Array(this.currentCb.buffer);
      this.forwardY = new Uint8ClampedArray(this.codedSize);
      this.forwardY32 = new Uint32Array(this.forwardY.buffer);
      this.forwardCr = new Uint8ClampedArray(this.codedSize >> 2);
      this.forwardCr32 = new Uint32Array(this.forwardCr.buffer);
      this.forwardCb = new Uint8ClampedArray(this.codedSize >> 2);
      this.forwardCb32 = new Uint32Array(this.forwardCb.buffer)
  };
  MPEG1.prototype.currentY = null;
  MPEG1.prototype.currentCr = null;
  MPEG1.prototype.currentCb = null;
  MPEG1.prototype.pictureType = 0;
  MPEG1.prototype.forwardY = null;
  MPEG1.prototype.forwardCr = null;
  MPEG1.prototype.forwardCb = null;
  MPEG1.prototype.fullPelForward = false;
  MPEG1.prototype.forwardFCode = 0;
  MPEG1.prototype.forwardRSize = 0;
  MPEG1.prototype.forwardF = 0;
  MPEG1.prototype.decodePicture = function(skipOutput) {
      this.currentFrame++;
      this.bits.skip(10);
      this.pictureType = this.bits.read(3);
      this.bits.skip(16);
      if (this.pictureType <= 0 || this.pictureType >= MPEG1.PICTURE_TYPE.B) {
          return
      }
      if (this.pictureType === MPEG1.PICTURE_TYPE.PREDICTIVE) {
          this.fullPelForward = this.bits.read(1);
          this.forwardFCode = this.bits.read(3);
          if (this.forwardFCode === 0) {
              return
          }
          this.forwardRSize = this.forwardFCode - 1;
          this.forwardF = 1 << this.forwardRSize
      }
      var code = 0;
      do {
          code = this.bits.findNextStartCode()
      } while ( code === MPEG1 . START . EXTENSION || code === MPEG1 . START . USER_DATA );
      while (code >= MPEG1.START.SLICE_FIRST && code <= MPEG1.START.SLICE_LAST) {
          this.decodeSlice(code & 255);
          code = this.bits.findNextStartCode()
      }
      if (code !== -1) {
          this.bits.rewind(32)
      }
      if (this.destination) {
          this.destination.render(this.currentY, this.currentCr, this.currentCb)
      }
      if (this.pictureType === MPEG1.PICTURE_TYPE.INTRA || this.pictureType === MPEG1.PICTURE_TYPE.PREDICTIVE) {
          var tmpY = this.forwardY,
          tmpY32 = this.forwardY32,
          tmpCr = this.forwardCr,
          tmpCr32 = this.forwardCr32,
          tmpCb = this.forwardCb,
          tmpCb32 = this.forwardCb32;
          this.forwardY = this.currentY;
          this.forwardY32 = this.currentY32;
          this.forwardCr = this.currentCr;
          this.forwardCr32 = this.currentCr32;
          this.forwardCb = this.currentCb;
          this.forwardCb32 = this.currentCb32;
          this.currentY = tmpY;
          this.currentY32 = tmpY32;
          this.currentCr = tmpCr;
          this.currentCr32 = tmpCr32;
          this.currentCb = tmpCb;
          this.currentCb32 = tmpCb32
      }
  };
  MPEG1.prototype.quantizerScale = 0;
  MPEG1.prototype.sliceBegin = false;
  MPEG1.prototype.decodeSlice = function(slice) {
      this.sliceBegin = true;
      this.macroblockAddress = (slice - 1) * this.mbWidth - 1;
      this.motionFwH = this.motionFwHPrev = 0;
      this.motionFwV = this.motionFwVPrev = 0;
      this.dcPredictorY = 128;
      this.dcPredictorCr = 128;
      this.dcPredictorCb = 128;
      this.quantizerScale = this.bits.read(5);
      while (this.bits.read(1)) {
          this.bits.skip(8)
      }
      do {
          this.decodeMacroblock()
      } while (! this . bits . nextBytesAreStartCode ())
  };
  MPEG1.prototype.macroblockAddress = 0;
  MPEG1.prototype.mbRow = 0;
  MPEG1.prototype.mbCol = 0;
  MPEG1.prototype.macroblockType = 0;
  MPEG1.prototype.macroblockIntra = false;
  MPEG1.prototype.macroblockMotFw = false;
  MPEG1.prototype.motionFwH = 0;
  MPEG1.prototype.motionFwV = 0;
  MPEG1.prototype.motionFwHPrev = 0;
  MPEG1.prototype.motionFwVPrev = 0;
  MPEG1.prototype.decodeMacroblock = function() {
      var increment = 0,
      t = this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT);
      while (t === 34) {
          t = this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT)
      }
      while (t === 35) {
          increment += 33;
          t = this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT)
      }
      increment += t;
      if (this.sliceBegin) {
          this.sliceBegin = false;
          this.macroblockAddress += increment
      } else {
          if (this.macroblockAddress + increment >= this.mbSize) {
              return
          }
          if (increment > 1) {
              this.dcPredictorY = 128;
              this.dcPredictorCr = 128;
              this.dcPredictorCb = 128;
              if (this.pictureType === MPEG1.PICTURE_TYPE.PREDICTIVE) {
                  this.motionFwH = this.motionFwHPrev = 0;
                  this.motionFwV = this.motionFwVPrev = 0
              }
          }
          while (increment > 1) {
              this.macroblockAddress++;
              this.mbRow = this.macroblockAddress / this.mbWidth | 0;
              this.mbCol = this.macroblockAddress % this.mbWidth;
              this.copyMacroblock(this.motionFwH, this.motionFwV, this.forwardY, this.forwardCr, this.forwardCb);
              increment--
          }
          this.macroblockAddress++
      }
      this.mbRow = this.macroblockAddress / this.mbWidth | 0;
      this.mbCol = this.macroblockAddress % this.mbWidth;
      var mbTable = MPEG1.MACROBLOCK_TYPE[this.pictureType];
      this.macroblockType = this.readHuffman(mbTable);
      this.macroblockIntra = this.macroblockType & 1;
      this.macroblockMotFw = this.macroblockType & 8;
      if ((this.macroblockType & 16) !== 0) {
          this.quantizerScale = this.bits.read(5)
      }
      if (this.macroblockIntra) {
          this.motionFwH = this.motionFwHPrev = 0;
          this.motionFwV = this.motionFwVPrev = 0
      } else {
          this.dcPredictorY = 128;
          this.dcPredictorCr = 128;
          this.dcPredictorCb = 128;
          this.decodeMotionVectors();
          this.copyMacroblock(this.motionFwH, this.motionFwV, this.forwardY, this.forwardCr, this.forwardCb)
      }
      var cbp = (this.macroblockType & 2) !== 0 ? this.readHuffman(MPEG1.CODE_BLOCK_PATTERN) : this.macroblockIntra ? 63 : 0;
      for (var block = 0,
      mask = 32; block < 6; block++) {
          if ((cbp & mask) !== 0) {
              this.decodeBlock(block)
          }
          mask >>= 1
      }
  };
  MPEG1.prototype.decodeMotionVectors = function() {
      var code, d, r = 0;
      if (this.macroblockMotFw) {
          code = this.readHuffman(MPEG1.MOTION);
          if (code !== 0 && this.forwardF !== 1) {
              r = this.bits.read(this.forwardRSize);
              d = (Math.abs(code) - 1 << this.forwardRSize) + r + 1;
              if (code < 0) {
                  d = -d
              }
          } else {
              d = code
          }
          this.motionFwHPrev += d;
          if (this.motionFwHPrev > (this.forwardF << 4) - 1) {
              this.motionFwHPrev -= this.forwardF << 5
          } else if (this.motionFwHPrev < -this.forwardF << 4) {
              this.motionFwHPrev += this.forwardF << 5
          }
          this.motionFwH = this.motionFwHPrev;
          if (this.fullPelForward) {
              this.motionFwH <<= 1
          }
          code = this.readHuffman(MPEG1.MOTION);
          if (code !== 0 && this.forwardF !== 1) {
              r = this.bits.read(this.forwardRSize);
              d = (Math.abs(code) - 1 << this.forwardRSize) + r + 1;
              if (code < 0) {
                  d = -d
              }
          } else {
              d = code
          }
          this.motionFwVPrev += d;
          if (this.motionFwVPrev > (this.forwardF << 4) - 1) {
              this.motionFwVPrev -= this.forwardF << 5
          } else if (this.motionFwVPrev < -this.forwardF << 4) {
              this.motionFwVPrev += this.forwardF << 5
          }
          this.motionFwV = this.motionFwVPrev;
          if (this.fullPelForward) {
              this.motionFwV <<= 1
          }
      } else if (this.pictureType === MPEG1.PICTURE_TYPE.PREDICTIVE) {
          this.motionFwH = this.motionFwHPrev = 0;
          this.motionFwV = this.motionFwVPrev = 0
      }
  };
  MPEG1.prototype.copyMacroblock = function(motionH, motionV, sY, sCr, sCb) {
      var width, scan, H, V, oddH, oddV, src, dest, last;
      var dY = this.currentY32,
      dCb = this.currentCb32,
      dCr = this.currentCr32;
      width = this.codedWidth;
      scan = width - 16;
      H = motionH >> 1;
      V = motionV >> 1;
      oddH = (motionH & 1) === 1;
      oddV = (motionV & 1) === 1;
      src = ((this.mbRow << 4) + V) * width + (this.mbCol << 4) + H;
      dest = this.mbRow * width + this.mbCol << 2;
      last = dest + (width << 2);
      var x, y1, y2, y;
      if (oddH) {
          if (oddV) {
              while (dest < last) {
                  y1 = sY[src] + sY[src + width];
                  src++;
                  for (x = 0; x < 4; x++) {
                      y2 = sY[src] + sY[src + width];
                      src++;
                      y = y1 + y2 + 2 >> 2 & 255;
                      y1 = sY[src] + sY[src + width];
                      src++;
                      y |= y1 + y2 + 2 << 6 & 65280;
                      y2 = sY[src] + sY[src + width];
                      src++;
                      y |= y1 + y2 + 2 << 14 & 16711680;
                      y1 = sY[src] + sY[src + width];
                      src++;
                      y |= y1 + y2 + 2 << 22 & 4278190080;
                      dY[dest++] = y
                  }
                  dest += scan >> 2;
                  src += scan - 1
              }
          } else {
              while (dest < last) {
                  y1 = sY[src++];
                  for (x = 0; x < 4; x++) {
                      y2 = sY[src++];
                      y = y1 + y2 + 1 >> 1 & 255;
                      y1 = sY[src++];
                      y |= y1 + y2 + 1 << 7 & 65280;
                      y2 = sY[src++];
                      y |= y1 + y2 + 1 << 15 & 16711680;
                      y1 = sY[src++];
                      y |= y1 + y2 + 1 << 23 & 4278190080;
                      dY[dest++] = y
                  }
                  dest += scan >> 2;
                  src += scan - 1
              }
          }
      } else {
          if (oddV) {
              while (dest < last) {
                  for (x = 0; x < 4; x++) {
                      y = sY[src] + sY[src + width] + 1 >> 1 & 255;
                      src++;
                      y |= sY[src] + sY[src + width] + 1 << 7 & 65280;
                      src++;
                      y |= sY[src] + sY[src + width] + 1 << 15 & 16711680;
                      src++;
                      y |= sY[src] + sY[src + width] + 1 << 23 & 4278190080;
                      src++;
                      dY[dest++] = y
                  }
                  dest += scan >> 2;
                  src += scan
              }
          } else {
              while (dest < last) {
                  for (x = 0; x < 4; x++) {
                      y = sY[src];
                      src++;
                      y |= sY[src] << 8;
                      src++;
                      y |= sY[src] << 16;
                      src++;
                      y |= sY[src] << 24;
                      src++;
                      dY[dest++] = y
                  }
                  dest += scan >> 2;
                  src += scan;
              }
          }
      }
      width = this.halfWidth;
      scan = width - 8;
      H = motionH / 2 >> 1;
      V = motionV / 2 >> 1;
      oddH = (motionH / 2 & 1) === 1;
      oddV = (motionV / 2 & 1) === 1;
      src = ((this.mbRow << 3) + V) * width + (this.mbCol << 3) + H;
      dest = this.mbRow * width + this.mbCol << 1;
      last = dest + (width << 1);
      var cr1, cr2, cr, cb1, cb2, cb;
      if (oddH) {
          if (oddV) {
              while (dest < last) {
                  cr1 = sCr[src] + sCr[src + width];
                  cb1 = sCb[src] + sCb[src + width];
                  src++;
                  for (x = 0; x < 2; x++) {
                      cr2 = sCr[src] + sCr[src + width];
                      cb2 = sCb[src] + sCb[src + width];
                      src++;
                      cr = cr1 + cr2 + 2 >> 2 & 255;
                      cb = cb1 + cb2 + 2 >> 2 & 255;
                      cr1 = sCr[src] + sCr[src + width];
                      cb1 = sCb[src] + sCb[src + width];
                      src++;
                      cr |= cr1 + cr2 + 2 << 6 & 65280;
                      cb |= cb1 + cb2 + 2 << 6 & 65280;
                      cr2 = sCr[src] + sCr[src + width];
                      cb2 = sCb[src] + sCb[src + width];
                      src++;
                      cr |= cr1 + cr2 + 2 << 14 & 16711680;
                      cb |= cb1 + cb2 + 2 << 14 & 16711680;
                      cr1 = sCr[src] + sCr[src + width];
                      cb1 = sCb[src] + sCb[src + width];
                      src++;
                      cr |= cr1 + cr2 + 2 << 22 & 4278190080;
                      cb |= cb1 + cb2 + 2 << 22 & 4278190080;
                      dCr[dest] = cr;
                      dCb[dest] = cb;
                      dest++
                  }
                  dest += scan >> 2;
                  src += scan - 1
              }
          } else {
              while (dest < last) {
                  cr1 = sCr[src];
                  cb1 = sCb[src];
                  src++;
                  for (x = 0; x < 2; x++) {
                      cr2 = sCr[src];
                      cb2 = sCb[src++];
                      cr = cr1 + cr2 + 1 >> 1 & 255;
                      cb = cb1 + cb2 + 1 >> 1 & 255;
                      cr1 = sCr[src];
                      cb1 = sCb[src++];
                      cr |= cr1 + cr2 + 1 << 7 & 65280;
                      cb |= cb1 + cb2 + 1 << 7 & 65280;
                      cr2 = sCr[src];
                      cb2 = sCb[src++];
                      cr |= cr1 + cr2 + 1 << 15 & 16711680;
                      cb |= cb1 + cb2 + 1 << 15 & 16711680;
                      cr1 = sCr[src];
                      cb1 = sCb[src++];
                      cr |= cr1 + cr2 + 1 << 23 & 4278190080;
                      cb |= cb1 + cb2 + 1 << 23 & 4278190080;
                      dCr[dest] = cr;
                      dCb[dest] = cb;
                      dest++
                  }
                  dest += scan >> 2;
                  src += scan - 1
              }
          }
      } else {
          if (oddV) {
              while (dest < last) {
                  for (x = 0; x < 2; x++) {
                      cr = sCr[src] + sCr[src + width] + 1 >> 1 & 255;
                      cb = sCb[src] + sCb[src + width] + 1 >> 1 & 255;
                      src++;
                      cr |= sCr[src] + sCr[src + width] + 1 << 7 & 65280;
                      cb |= sCb[src] + sCb[src + width] + 1 << 7 & 65280;
                      src++;
                      cr |= sCr[src] + sCr[src + width] + 1 << 15 & 16711680;
                      cb |= sCb[src] + sCb[src + width] + 1 << 15 & 16711680;
                      src++;
                      cr |= sCr[src] + sCr[src + width] + 1 << 23 & 4278190080;
                      cb |= sCb[src] + sCb[src + width] + 1 << 23 & 4278190080;
                      src++;
                      dCr[dest] = cr;
                      dCb[dest] = cb;
                      dest++
                  }
                  dest += scan >> 2;
                  src += scan
              }
          } else {
              while (dest < last) {
                  for (x = 0; x < 2; x++) {
                      cr = sCr[src];
                      cb = sCb[src];
                      src++;
                      cr |= sCr[src] << 8;
                      cb |= sCb[src] << 8;
                      src++;
                      cr |= sCr[src] << 16;
                      cb |= sCb[src] << 16;
                      src++;
                      cr |= sCr[src] << 24;
                      cb |= sCb[src] << 24;
                      src++;
                      dCr[dest] = cr;
                      dCb[dest] = cb;
                      dest++
                  }
                  dest += scan >> 2;
                  src += scan
              }
          }
      }
  };
  MPEG1.prototype.dcPredictorY = 0;
  MPEG1.prototype.dcPredictorCr = 0;
  MPEG1.prototype.dcPredictorCb = 0;
  MPEG1.prototype.blockData = null;
  MPEG1.prototype.decodeBlock = function(block) {
      var n = 0,
      quantMatrix;
      if (this.macroblockIntra) {
          var predictor, dctSize;
          if (block < 4) {
              predictor = this.dcPredictorY;
              dctSize = this.readHuffman(MPEG1.DCT_DC_SIZE_LUMINANCE)
          } else {
              predictor = block === 4 ? this.dcPredictorCr: this.dcPredictorCb;
              dctSize = this.readHuffman(MPEG1.DCT_DC_SIZE_CHROMINANCE)
          }
          if (dctSize > 0) {
              var differential = this.bits.read(dctSize);
              if ((differential & 1 << dctSize - 1) !== 0) {
                  this.blockData[0] = predictor + differential
              } else {
                  this.blockData[0] = predictor + ( - 1 << dctSize | differential + 1)
              }
          } else {
              this.blockData[0] = predictor
          }
          if (block < 4) {
              this.dcPredictorY = this.blockData[0]
          } else if (block === 4) {
              this.dcPredictorCr = this.blockData[0]
          } else {
              this.dcPredictorCb = this.blockData[0]
          }
          this.blockData[0] <<= 3 + 5;
          quantMatrix = this.intraQuantMatrix;
          n = 1
      } else {
          quantMatrix = this.nonIntraQuantMatrix
      }
      var level = 0;
      while (true) {
          var run = 0,
          coeff = this.readHuffman(MPEG1.DCT_COEFF);
          if (coeff === 1 && n > 0 && this.bits.read(1) === 0) {
              break
          }
          if (coeff === 65535) {
              run = this.bits.read(6);
              level = this.bits.read(8);
              if (level === 0) {
                  level = this.bits.read(8)
              } else if (level === 128) {
                  level = this.bits.read(8) - 256
              } else if (level > 128) {
                  level = level - 256
              }
          } else {
              run = coeff >> 8;
              level = coeff & 255;
              if (this.bits.read(1)) {
                  level = -level
              }
          }
          n += run;
          var dezigZagged = MPEG1.ZIG_ZAG[n];
          n++;
          level <<= 1;
          if (!this.macroblockIntra) {
              level += level < 0 ? -1 : 1
          }
          level = level * this.quantizerScale * quantMatrix[dezigZagged] >> 4;
          if ((level & 1) === 0) {
              level -= level > 0 ? 1 : -1
          }
          if (level > 2047) {
              level = 2047
          } else if (level < -2048) {
              level = -2048
          }
          this.blockData[dezigZagged] = level * MPEG1.PREMULTIPLIER_MATRIX[dezigZagged]
      }
      var destArray, destIndex, scan;
      if (block < 4) {
          destArray = this.currentY;
          scan = this.codedWidth - 8;
          destIndex = this.mbRow * this.codedWidth + this.mbCol << 4;
          if ((block & 1) !== 0) {
              destIndex += 8
          }
          if ((block & 2) !== 0) {
              destIndex += this.codedWidth << 3
          }
      } else {
          destArray = block === 4 ? this.currentCb: this.currentCr;
          scan = (this.codedWidth >> 1) - 8;
          destIndex = (this.mbRow * this.codedWidth << 2) + (this.mbCol << 3)
      }
      if (this.macroblockIntra) {
          if (n === 1) {
              MPEG1.CopyValueToDestination(this.blockData[0] + 128 >> 8, destArray, destIndex, scan);
              this.blockData[0] = 0
          } else {
              MPEG1.IDCT(this.blockData);
              MPEG1.CopyBlockToDestination(this.blockData, destArray, destIndex, scan);
              JSMpeg.Fill(this.blockData, 0)
          }
      } else {
          if (n === 1) {
              MPEG1.AddValueToDestination(this.blockData[0] + 128 >> 8, destArray, destIndex, scan);
              this.blockData[0] = 0
          } else {
              MPEG1.IDCT(this.blockData);
              MPEG1.AddBlockToDestination(this.blockData, destArray, destIndex, scan);
              JSMpeg.Fill(this.blockData, 0)
          }
      }
      n = 0
  };
  MPEG1.CopyBlockToDestination = function(block, dest, index, scan) {
      for (var n = 0; n < 64; n += 8, index += scan + 8) {
          dest[index + 0] = block[n + 0];
          dest[index + 1] = block[n + 1];
          dest[index + 2] = block[n + 2];
          dest[index + 3] = block[n + 3];
          dest[index + 4] = block[n + 4];
          dest[index + 5] = block[n + 5];
          dest[index + 6] = block[n + 6];
          dest[index + 7] = block[n + 7]
      }
  };
  MPEG1.AddBlockToDestination = function(block, dest, index, scan) {
      for (var n = 0; n < 64; n += 8, index += scan + 8) {
          dest[index + 0] += block[n + 0];
          dest[index + 1] += block[n + 1];
          dest[index + 2] += block[n + 2];
          dest[index + 3] += block[n + 3];
          dest[index + 4] += block[n + 4];
          dest[index + 5] += block[n + 5];
          dest[index + 6] += block[n + 6];
          dest[index + 7] += block[n + 7]
      }
  };
  MPEG1.CopyValueToDestination = function(value, dest, index, scan) {
      for (var n = 0; n < 64; n += 8, index += scan + 8) {
          dest[index + 0] = value;
          dest[index + 1] = value;
          dest[index + 2] = value;
          dest[index + 3] = value;
          dest[index + 4] = value;
          dest[index + 5] = value;
          dest[index + 6] = value;
          dest[index + 7] = value
      }
  };
  MPEG1.AddValueToDestination = function(value, dest, index, scan) {
      for (var n = 0; n < 64; n += 8, index += scan + 8) {
          dest[index + 0] += value;
          dest[index + 1] += value;
          dest[index + 2] += value;
          dest[index + 3] += value;
          dest[index + 4] += value;
          dest[index + 5] += value;
          dest[index + 6] += value;
          dest[index + 7] += value
      }
  };
  MPEG1.IDCT = function(block) {
      var b1, b3, b4, b6, b7, tmp1, tmp2, m0, x0, x1, x2, x3, x4, y3, y4, y5, y6, y7;
      for (var i = 0; i < 8; ++i) {
          b1 = block[4 * 8 + i];
          b3 = block[2 * 8 + i] + block[6 * 8 + i];
          b4 = block[5 * 8 + i] - block[3 * 8 + i];
          tmp1 = block[1 * 8 + i] + block[7 * 8 + i];
          tmp2 = block[3 * 8 + i] + block[5 * 8 + i];
          b6 = block[1 * 8 + i] - block[7 * 8 + i];
          b7 = tmp1 + tmp2;
          m0 = block[0 * 8 + i];
          x4 = (b6 * 473 - b4 * 196 + 128 >> 8) - b7;
          x0 = x4 - ((tmp1 - tmp2) * 362 + 128 >> 8);
          x1 = m0 - b1;
          x2 = ((block[2 * 8 + i] - block[6 * 8 + i]) * 362 + 128 >> 8) - b3;
          x3 = m0 + b1;
          y3 = x1 + x2;
          y4 = x3 + b3;
          y5 = x1 - x2;
          y6 = x3 - b3;
          y7 = -x0 - (b4 * 473 + b6 * 196 + 128 >> 8);
          block[0 * 8 + i] = b7 + y4;
          block[1 * 8 + i] = x4 + y3;
          block[2 * 8 + i] = y5 - x0;
          block[3 * 8 + i] = y6 - y7;
          block[4 * 8 + i] = y6 + y7;
          block[5 * 8 + i] = x0 + y5;
          block[6 * 8 + i] = y3 - x4;
          block[7 * 8 + i] = y4 - b7
      }
      for (var i = 0; i < 64; i += 8) {
          b1 = block[4 + i];
          b3 = block[2 + i] + block[6 + i];
          b4 = block[5 + i] - block[3 + i];
          tmp1 = block[1 + i] + block[7 + i];
          tmp2 = block[3 + i] + block[5 + i];
          b6 = block[1 + i] - block[7 + i];
          b7 = tmp1 + tmp2;
          m0 = block[0 + i];
          x4 = (b6 * 473 - b4 * 196 + 128 >> 8) - b7;
          x0 = x4 - ((tmp1 - tmp2) * 362 + 128 >> 8);
          x1 = m0 - b1;
          x2 = ((block[2 + i] - block[6 + i]) * 362 + 128 >> 8) - b3;
          x3 = m0 + b1;
          y3 = x1 + x2;
          y4 = x3 + b3;
          y5 = x1 - x2;
          y6 = x3 - b3;
          y7 = -x0 - (b4 * 473 + b6 * 196 + 128 >> 8);
          block[0 + i] = b7 + y4 + 128 >> 8;
          block[1 + i] = x4 + y3 + 128 >> 8;
          block[2 + i] = y5 - x0 + 128 >> 8;
          block[3 + i] = y6 - y7 + 128 >> 8;
          block[4 + i] = y6 + y7 + 128 >> 8;
          block[5 + i] = x0 + y5 + 128 >> 8;
          block[6 + i] = y3 - x4 + 128 >> 8;
          block[7 + i] = y4 - b7 + 128 >> 8
      }
  };
  MPEG1.PICTURE_RATE = [0, 23.976, 24, 25, 29.97, 30, 50, 59.94, 60, 0, 0, 0, 0, 0, 0, 0];
  MPEG1.ZIG_ZAG = new Uint8Array([0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63]);
  MPEG1.DEFAULT_INTRA_QUANT_MATRIX = new Uint8Array([8, 16, 19, 22, 26, 27, 29, 34, 16, 16, 22, 24, 27, 29, 34, 37, 19, 22, 26, 27, 29, 34, 34, 38, 22, 22, 26, 27, 29, 34, 37, 40, 22, 26, 27, 29, 32, 35, 40, 48, 26, 27, 29, 32, 35, 40, 48, 58, 26, 27, 29, 34, 38, 46, 56, 69, 27, 29, 35, 38, 46, 56, 69, 83]);
  MPEG1.DEFAULT_NON_INTRA_QUANT_MATRIX = new Uint8Array([16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16]);
  MPEG1.PREMULTIPLIER_MATRIX = new Uint8Array([32, 44, 42, 38, 32, 25, 17, 9, 44, 62, 58, 52, 44, 35, 24, 12, 42, 58, 55, 49, 42, 33, 23, 12, 38, 52, 49, 44, 38, 30, 20, 10, 32, 44, 42, 38, 32, 25, 17, 9, 25, 35, 33, 30, 25, 20, 14, 7, 17, 24, 23, 20, 17, 14, 9, 5, 9, 12, 12, 10, 9, 7, 5, 2]);
  MPEG1.MACROBLOCK_ADDRESS_INCREMENT = new Int16Array([1 * 3, 2 * 3, 0, 3 * 3, 4 * 3, 0, 0, 0, 1, 5 * 3, 6 * 3, 0, 7 * 3, 8 * 3, 0, 9 * 3, 10 * 3, 0, 11 * 3, 12 * 3, 0, 0, 0, 3, 0, 0, 2, 13 * 3, 14 * 3, 0, 15 * 3, 16 * 3, 0, 0, 0, 5, 0, 0, 4, 17 * 3, 18 * 3, 0, 19 * 3, 20 * 3, 0, 0, 0, 7, 0, 0, 6, 21 * 3, 22 * 3, 0, 23 * 3, 24 * 3, 0, 25 * 3, 26 * 3, 0, 27 * 3, 28 * 3, 0, -1, 29 * 3, 0, -1, 30 * 3, 0, 31 * 3, 32 * 3, 0, 33 * 3, 34 * 3, 0, 35 * 3, 36 * 3, 0, 37 * 3, 38 * 3, 0, 0, 0, 9, 0, 0, 8, 39 * 3, 40 * 3, 0, 41 * 3, 42 * 3, 0, 43 * 3, 44 * 3, 0, 45 * 3, 46 * 3, 0, 0, 0, 15, 0, 0, 14, 0, 0, 13, 0, 0, 12, 0, 0, 11, 0, 0, 10, 47 * 3, -1, 0, -1, 48 * 3, 0, 49 * 3, 50 * 3, 0, 51 * 3, 52 * 3, 0, 53 * 3, 54 * 3, 0, 55 * 3, 56 * 3, 0, 57 * 3, 58 * 3, 0, 59 * 3, 60 * 3, 0, 61 * 3, -1, 0, -1, 62 * 3, 0, 63 * 3, 64 * 3, 0, 65 * 3, 66 * 3, 0, 67 * 3, 68 * 3, 0, 69 * 3, 70 * 3, 0, 71 * 3, 72 * 3, 0, 73 * 3, 74 * 3, 0, 0, 0, 21, 0, 0, 20, 0, 0, 19, 0, 0, 18, 0, 0, 17, 0, 0, 16, 0, 0, 35, 0, 0, 34, 0, 0, 33, 0, 0, 32, 0, 0, 31, 0, 0, 30, 0, 0, 29, 0, 0, 28, 0, 0, 27, 0, 0, 26, 0, 0, 25, 0, 0, 24, 0, 0, 23, 0, 0, 22]);
  MPEG1.MACROBLOCK_TYPE_INTRA = new Int8Array([1 * 3, 2 * 3, 0, -1, 3 * 3, 0, 0, 0, 1, 0, 0, 17]);
  MPEG1.MACROBLOCK_TYPE_PREDICTIVE = new Int8Array([1 * 3, 2 * 3, 0, 3 * 3, 4 * 3, 0, 0, 0, 10, 5 * 3, 6 * 3, 0, 0, 0, 2, 7 * 3, 8 * 3, 0, 0, 0, 8, 9 * 3, 10 * 3, 0, 11 * 3, 12 * 3, 0, -1, 13 * 3, 0, 0, 0, 18, 0, 0, 26, 0, 0, 1, 0, 0, 17]);
  MPEG1.MACROBLOCK_TYPE_B = new Int8Array([1 * 3, 2 * 3, 0, 3 * 3, 5 * 3, 0, 4 * 3, 6 * 3, 0, 8 * 3, 7 * 3, 0, 0, 0, 12, 9 * 3, 10 * 3, 0, 0, 0, 14, 13 * 3, 14 * 3, 0, 12 * 3, 11 * 3, 0, 0, 0, 4, 0, 0, 6, 18 * 3, 16 * 3, 0, 15 * 3, 17 * 3, 0, 0, 0, 8, 0, 0, 10, -1, 19 * 3, 0, 0, 0, 1, 20 * 3, 21 * 3, 0, 0, 0, 30, 0, 0, 17, 0, 0, 22, 0, 0, 26]);
  MPEG1.MACROBLOCK_TYPE = [null, MPEG1.MACROBLOCK_TYPE_INTRA, MPEG1.MACROBLOCK_TYPE_PREDICTIVE, MPEG1.MACROBLOCK_TYPE_B];
  MPEG1.CODE_BLOCK_PATTERN = new Int16Array([2 * 3, 1 * 3, 0, 3 * 3, 6 * 3, 0, 4 * 3, 5 * 3, 0, 8 * 3, 11 * 3, 0, 12 * 3, 13 * 3, 0, 9 * 3, 7 * 3, 0, 10 * 3, 14 * 3, 0, 20 * 3, 19 * 3, 0, 18 * 3, 16 * 3, 0, 23 * 3, 17 * 3, 0, 27 * 3, 25 * 3, 0, 21 * 3, 28 * 3, 0, 15 * 3, 22 * 3, 0, 24 * 3, 26 * 3, 0, 0, 0, 60, 35 * 3, 40 * 3, 0, 44 * 3, 48 * 3, 0, 38 * 3, 36 * 3, 0, 42 * 3, 47 * 3, 0, 29 * 3, 31 * 3, 0, 39 * 3, 32 * 3, 0, 0, 0, 32, 45 * 3, 46 * 3, 0, 33 * 3, 41 * 3, 0, 43 * 3, 34 * 3, 0, 0, 0, 4, 30 * 3, 37 * 3, 0, 0, 0, 8, 0, 0, 16, 0, 0, 44, 50 * 3, 56 * 3, 0, 0, 0, 28, 0, 0, 52, 0, 0, 62, 61 * 3, 59 * 3, 0, 52 * 3, 60 * 3, 0, 0, 0, 1, 55 * 3, 54 * 3, 0, 0, 0, 61, 0, 0, 56, 57 * 3, 58 * 3, 0, 0, 0, 2, 0, 0, 40, 51 * 3, 62 * 3, 0, 0, 0, 48, 64 * 3, 63 * 3, 0, 49 * 3, 53 * 3, 0, 0, 0, 20, 0, 0, 12, 80 * 3, 83 * 3, 0, 0, 0, 63, 77 * 3, 75 * 3, 0, 65 * 3, 73 * 3, 0, 84 * 3, 66 * 3, 0, 0, 0, 24, 0, 0, 36, 0, 0, 3, 69 * 3, 87 * 3, 0, 81 * 3, 79 * 3, 0, 68 * 3, 71 * 3, 0, 70 * 3, 78 * 3, 0, 67 * 3, 76 * 3, 0, 72 * 3, 74 * 3, 0, 86 * 3, 85 * 3, 0, 88 * 3, 82 * 3, 0, -1, 94 * 3, 0, 95 * 3, 97 * 3, 0, 0, 0, 33, 0, 0, 9, 106 * 3, 110 * 3, 0, 102 * 3, 116 * 3, 0, 0, 0, 5, 0, 0, 10, 93 * 3, 89 * 3, 0, 0, 0, 6, 0, 0, 18, 0, 0, 17, 0, 0, 34, 113 * 3, 119 * 3, 0, 103 * 3, 104 * 3, 0, 90 * 3, 92 * 3, 0, 109 * 3, 107 * 3, 0, 117 * 3, 118 * 3, 0, 101 * 3, 99 * 3, 0, 98 * 3, 96 * 3, 0, 100 * 3, 91 * 3, 0, 114 * 3, 115 * 3, 0, 105 * 3, 108 * 3, 0, 112 * 3, 111 * 3, 0, 121 * 3, 125 * 3, 0, 0, 0, 41, 0, 0, 14, 0, 0, 21, 124 * 3, 122 * 3, 0, 120 * 3, 123 * 3, 0, 0, 0, 11, 0, 0, 19, 0, 0, 7, 0, 0, 35, 0, 0, 13, 0, 0, 50, 0, 0, 49, 0, 0, 58, 0, 0, 37, 0, 0, 25, 0, 0, 45, 0, 0, 57, 0, 0, 26, 0, 0, 29, 0, 0, 38, 0, 0, 53, 0, 0, 23, 0, 0, 43, 0, 0, 46, 0, 0, 42, 0, 0, 22, 0, 0, 54, 0, 0, 51, 0, 0, 15, 0, 0, 30, 0, 0, 39, 0, 0, 47, 0, 0, 55, 0, 0, 27, 0, 0, 59, 0, 0, 31]);
  MPEG1.MOTION = new Int16Array([1 * 3, 2 * 3, 0, 4 * 3, 3 * 3, 0, 0, 0, 0, 6 * 3, 5 * 3, 0, 8 * 3, 7 * 3, 0, 0, 0, -1, 0, 0, 1, 9 * 3, 10 * 3, 0, 12 * 3, 11 * 3, 0, 0, 0, 2, 0, 0, -2, 14 * 3, 15 * 3, 0, 16 * 3, 13 * 3, 0, 20 * 3, 18 * 3, 0, 0, 0, 3, 0, 0, -3, 17 * 3, 19 * 3, 0, -1, 23 * 3, 0, 27 * 3, 25 * 3, 0, 26 * 3, 21 * 3, 0, 24 * 3, 22 * 3, 0, 32 * 3, 28 * 3, 0, 29 * 3, 31 * 3, 0, -1, 33 * 3, 0, 36 * 3, 35 * 3, 0, 0, 0, -4, 30 * 3, 34 * 3, 0, 0, 0, 4, 0, 0, -7, 0, 0, 5, 37 * 3, 41 * 3, 0, 0, 0, -5, 0, 0, 7, 38 * 3, 40 * 3, 0, 42 * 3, 39 * 3, 0, 0, 0, -6, 0, 0, 6, 51 * 3, 54 * 3, 0, 50 * 3, 49 * 3, 0, 45 * 3, 46 * 3, 0, 52 * 3, 47 * 3, 0, 43 * 3, 53 * 3, 0, 44 * 3, 48 * 3, 0, 0, 0, 10, 0, 0, 9, 0, 0, 8, 0, 0, -8, 57 * 3, 66 * 3, 0, 0, 0, -9, 60 * 3, 64 * 3, 0, 56 * 3, 61 * 3, 0, 55 * 3, 62 * 3, 0, 58 * 3, 63 * 3, 0, 0, 0, -10, 59 * 3, 65 * 3, 0, 0, 0, 12, 0, 0, 16, 0, 0, 13, 0, 0, 14, 0, 0, 11, 0, 0, 15, 0, 0, -16, 0, 0, -12, 0, 0, -14, 0, 0, -15, 0, 0, -11, 0, 0, -13]);
  MPEG1.DCT_DC_SIZE_LUMINANCE = new Int8Array([2 * 3, 1 * 3, 0, 6 * 3, 5 * 3, 0, 3 * 3, 4 * 3, 0, 0, 0, 1, 0, 0, 2, 9 * 3, 8 * 3, 0, 7 * 3, 10 * 3, 0, 0, 0, 0, 12 * 3, 11 * 3, 0, 0, 0, 4, 0, 0, 3, 13 * 3, 14 * 3, 0, 0, 0, 5, 0, 0, 6, 16 * 3, 15 * 3, 0, 17 * 3, -1, 0, 0, 0, 7, 0, 0, 8]);
  MPEG1.DCT_DC_SIZE_CHROMINANCE = new Int8Array([2 * 3, 1 * 3, 0, 4 * 3, 3 * 3, 0, 6 * 3, 5 * 3, 0, 8 * 3, 7 * 3, 0, 0, 0, 2, 0, 0, 1, 0, 0, 0, 10 * 3, 9 * 3, 0, 0, 0, 3, 12 * 3, 11 * 3, 0, 0, 0, 4, 14 * 3, 13 * 3, 0, 0, 0, 5, 16 * 3, 15 * 3, 0, 0, 0, 6, 17 * 3, -1, 0, 0, 0, 7, 0, 0, 8]);
  MPEG1.DCT_COEFF = new Int32Array([1 * 3, 2 * 3, 0, 4 * 3, 3 * 3, 0, 0, 0, 1, 7 * 3, 8 * 3, 0, 6 * 3, 5 * 3, 0, 13 * 3, 9 * 3, 0, 11 * 3, 10 * 3, 0, 14 * 3, 12 * 3, 0, 0, 0, 257, 20 * 3, 22 * 3, 0, 18 * 3, 21 * 3, 0, 16 * 3, 19 * 3, 0, 0, 0, 513, 17 * 3, 15 * 3, 0, 0, 0, 2, 0, 0, 3, 27 * 3, 25 * 3, 0, 29 * 3, 31 * 3, 0, 24 * 3, 26 * 3, 0, 32 * 3, 30 * 3, 0, 0, 0, 1025, 23 * 3, 28 * 3, 0, 0, 0, 769, 0, 0, 258, 0, 0, 1793, 0, 0, 65535, 0, 0, 1537, 37 * 3, 36 * 3, 0, 0, 0, 1281, 35 * 3, 34 * 3, 0, 39 * 3, 38 * 3, 0, 33 * 3, 42 * 3, 0, 40 * 3, 41 * 3, 0, 52 * 3, 50 * 3, 0, 54 * 3, 53 * 3, 0, 48 * 3, 49 * 3, 0, 43 * 3, 45 * 3, 0, 46 * 3, 44 * 3, 0, 0, 0, 2049, 0, 0, 4, 0, 0, 514, 0, 0, 2305, 51 * 3, 47 * 3, 0, 55 * 3, 57 * 3, 0, 60 * 3, 56 * 3, 0, 59 * 3, 58 * 3, 0, 61 * 3, 62 * 3, 0, 0, 0, 2561, 0, 0, 3329, 0, 0, 6, 0, 0, 259, 0, 0, 5, 0, 0, 770, 0, 0, 2817, 0, 0, 3073, 76 * 3, 75 * 3, 0, 67 * 3, 70 * 3, 0, 73 * 3, 71 * 3, 0, 78 * 3, 74 * 3, 0, 72 * 3, 77 * 3, 0, 69 * 3, 64 * 3, 0, 68 * 3, 63 * 3, 0, 66 * 3, 65 * 3, 0, 81 * 3, 87 * 3, 0, 91 * 3, 80 * 3, 0, 82 * 3, 79 * 3, 0, 83 * 3, 86 * 3, 0, 93 * 3, 92 * 3, 0, 84 * 3, 85 * 3, 0, 90 * 3, 94 * 3, 0, 88 * 3, 89 * 3, 0, 0, 0, 515, 0, 0, 260, 0, 0, 7, 0, 0, 1026, 0, 0, 1282, 0, 0, 4097, 0, 0, 3841, 0, 0, 3585, 105 * 3, 107 * 3, 0, 111 * 3, 114 * 3, 0, 104 * 3, 97 * 3, 0, 125 * 3, 119 * 3, 0, 96 * 3, 98 * 3, 0, -1, 123 * 3, 0, 95 * 3, 101 * 3, 0, 106 * 3, 121 * 3, 0, 99 * 3, 102 * 3, 0, 113 * 3, 103 * 3, 0, 112 * 3, 116 * 3, 0, 110 * 3, 100 * 3, 0, 124 * 3, 115 * 3, 0, 117 * 3, 122 * 3, 0, 109 * 3, 118 * 3, 0, 120 * 3, 108 * 3, 0, 127 * 3, 136 * 3, 0, 139 * 3, 140 * 3, 0, 130 * 3, 126 * 3, 0, 145 * 3, 146 * 3, 0, 128 * 3, 129 * 3, 0, 0, 0, 2050, 132 * 3, 134 * 3, 0, 155 * 3, 154 * 3, 0, 0, 0, 8, 137 * 3, 133 * 3, 0, 143 * 3, 144 * 3, 0, 151 * 3, 138 * 3, 0, 142 * 3, 141 * 3, 0, 0, 0, 10, 0, 0, 9, 0, 0, 11, 0, 0, 5377, 0, 0, 1538, 0, 0, 771, 0, 0, 5121, 0, 0, 1794, 0, 0, 4353, 0, 0, 4609, 0, 0, 4865, 148 * 3, 152 * 3, 0, 0, 0, 1027, 153 * 3, 150 * 3, 0, 0, 0, 261, 131 * 3, 135 * 3, 0, 0, 0, 516, 149 * 3, 147 * 3, 0, 172 * 3, 173 * 3, 0, 162 * 3, 158 * 3, 0, 170 * 3, 161 * 3, 0, 168 * 3, 166 * 3, 0, 157 * 3, 179 * 3, 0, 169 * 3, 167 * 3, 0, 174 * 3, 171 * 3, 0, 178 * 3, 177 * 3, 0, 156 * 3, 159 * 3, 0, 164 * 3, 165 * 3, 0, 183 * 3, 182 * 3, 0, 175 * 3, 176 * 3, 0, 0, 0, 263, 0, 0, 2562, 0, 0, 2306, 0, 0, 5633, 0, 0, 5889, 0, 0, 6401, 0, 0, 6145, 0, 0, 1283, 0, 0, 772, 0, 0, 13, 0, 0, 12, 0, 0, 14, 0, 0, 15, 0, 0, 517, 0, 0, 6657, 0, 0, 262, 180 * 3, 181 * 3, 0, 160 * 3, 163 * 3, 0, 196 * 3, 199 * 3, 0, 0, 0, 27, 203 * 3, 185 * 3, 0, 202 * 3, 201 * 3, 0, 0, 0, 19, 0, 0, 22, 197 * 3, 207 * 3, 0, 0, 0, 18, 191 * 3, 192 * 3, 0, 188 * 3, 190 * 3, 0, 0, 0, 20, 184 * 3, 194 * 3, 0, 0, 0, 21, 186 * 3, 193 * 3, 0, 0, 0, 23, 204 * 3, 198 * 3, 0, 0, 0, 25, 0, 0, 24, 200 * 3, 205 * 3, 0, 0, 0, 31, 0, 0, 30, 0, 0, 28, 0, 0, 29, 0, 0, 26, 0, 0, 17, 0, 0, 16, 189 * 3, 206 * 3, 0, 187 * 3, 195 * 3, 0, 218 * 3, 211 * 3, 0, 0, 0, 37, 215 * 3, 216 * 3, 0, 0, 0, 36, 210 * 3, 212 * 3, 0, 0, 0, 34, 213 * 3, 209 * 3, 0, 221 * 3, 222 * 3, 0, 219 * 3, 208 * 3, 0, 217 * 3, 214 * 3, 0, 223 * 3, 220 * 3, 0, 0, 0, 35, 0, 0, 267, 0, 0, 40, 0, 0, 268, 0, 0, 266, 0, 0, 32, 0, 0, 264, 0, 0, 265, 0, 0, 38, 0, 0, 269, 0, 0, 270, 0, 0, 33, 0, 0, 39, 0, 0, 7937, 0, 0, 6913, 0, 0, 7681, 0, 0, 4098, 0, 0, 7425, 0, 0, 7169, 0, 0, 271, 0, 0, 274, 0, 0, 273, 0, 0, 272, 0, 0, 1539, 0, 0, 2818, 0, 0, 3586, 0, 0, 3330, 0, 0, 3074, 0, 0, 3842]);
  MPEG1.PICTURE_TYPE = {
      INTRA: 1,
      PREDICTIVE: 2,
      B: 3
  };
  MPEG1.START = {
      SEQUENCE: 179,
      SLICE_FIRST: 1,
      SLICE_LAST: 175,
      PICTURE: 0,
      EXTENSION: 181,
      USER_DATA: 178
  };
  return MPEG1
} ();
JSMpeg.Decoder.MP2Audio = function() {
  "use strict";
  var MP2 = function(options) {
      JSMpeg.Decoder.Base.call(this, options);
      var bufferSize = options.audioBufferSize || 128 * 1024;
      var bufferMode = options.streaming ? JSMpeg.BitBuffer.MODE.EVICT: JSMpeg.BitBuffer.MODE.EXPAND;
      this.bits = new JSMpeg.BitBuffer(bufferSize, bufferMode);
      this.left = new Float32Array(1152);
      this.right = new Float32Array(1152);
      this.sampleRate = 44100;
      this.D = new Float32Array(1024);
      this.D.set(MP2.SYNTHESIS_WINDOW, 0);
      this.D.set(MP2.SYNTHESIS_WINDOW, 512);
      this.V = new Float32Array(1024);
      this.U = new Int32Array(32);
      this.VPos = 0;
      this.allocation = [new Array(32), new Array(32)];
      this.scaleFactorInfo = [new Uint8Array(32), new Uint8Array(32)];
      this.scaleFactor = [new Array(32), new Array(32)];
      this.sample = [new Array(32), new Array(32)];
      for (var j = 0; j < 2; j++) {
          for (var i = 0; i < 32; i++) {
              this.scaleFactor[j][i] = [0, 0, 0];
              this.sample[j][i] = [0, 0, 0]
          }
      }
  };
  MP2.prototype = Object.create(JSMpeg.Decoder.Base.prototype);
  MP2.prototype.constructor = MP2;
  MP2.prototype.decode = function() {
      var pos = this.bits.index >> 3;
      if (pos >= this.bits.byteLength) {
          return false
      }
      var decoded = this.decodeFrame(this.left, this.right);
      this.bits.index = pos + decoded << 3;
      if (!decoded) {
          return false
      }
      if (this.destination) {
          this.destination.play(this.sampleRate, this.left, this.right)
      }
      this.advanceDecodedTime(this.left.length / this.sampleRate);
      return true
  };
  MP2.prototype.getCurrentTime = function() {
      var enqueuedTime = this.destination ? this.destination.enqueuedTime: 0;
      return this.decodedTime - enqueuedTime
  };
  MP2.prototype.decodeFrame = function(left, right) {
      var sync = this.bits.read(11),
      version = this.bits.read(2),
      layer = this.bits.read(2),
      hasCRC = !this.bits.read(1);
      if (sync !== MP2.FRAME_SYNC || version !== MP2.VERSION.MPEG_1 || layer !== MP2.LAYER.II) {
          return 0
      }
      var bitrateIndex = this.bits.read(4) - 1;
      if (bitrateIndex > 13) {
          return 0
      }
      var sampleRateIndex = this.bits.read(2);
      var sampleRate = MP2.SAMPLE_RATE[sampleRateIndex];
      if (sampleRateIndex === 3) {
          return 0
      }
      if (version === MP2.VERSION.MPEG_2) {
          sampleRateIndex += 4;
          bitrateIndex += 14
      }
      var padding = this.bits.read(1),
      privat = this.bits.read(1),
      mode = this.bits.read(2);
      var bound = 0;
      if (mode === MP2.MODE.JOINT_STEREO) {
          bound = this.bits.read(2) + 1 << 2
      } else {
          this.bits.skip(2);
          bound = mode === MP2.MODE.MONO ? 0 : 32
      }
      this.bits.skip(4);
      if (hasCRC) {
          this.bits.skip(16)
      }
      var bitrate = MP2.BIT_RATE[bitrateIndex],
      sampleRate = MP2.SAMPLE_RATE[sampleRateIndex],
      frameSize = 144e3 * bitrate / sampleRate + padding | 0;
      var tab3 = 0;
      var sblimit = 0;
      if (version === MP2.VERSION.MPEG_2) {
          tab3 = 2;
          sblimit = 30
      } else {
          var tab1 = mode === MP2.MODE.MONO ? 0 : 1;
          var tab2 = MP2.QUANT_LUT_STEP_1[tab1][bitrateIndex];
          tab3 = MP2.QUANT_LUT_STEP_2[tab2][sampleRateIndex];
          sblimit = tab3 & 63;
          tab3 >>= 6
      }
      if (bound > sblimit) {
          bound = sblimit
      }
      for (var sb = 0; sb < bound; sb++) {
          this.allocation[0][sb] = this.readAllocation(sb, tab3);
          this.allocation[1][sb] = this.readAllocation(sb, tab3)
      }
      for (var sb = bound; sb < sblimit; sb++) {
          this.allocation[0][sb] = this.allocation[1][sb] = this.readAllocation(sb, tab3)
      }
      var channels = mode === MP2.MODE.MONO ? 1 : 2;
      for (var sb = 0; sb < sblimit; sb++) {
          for (ch = 0; ch < channels; ch++) {
              if (this.allocation[ch][sb]) {
                  this.scaleFactorInfo[ch][sb] = this.bits.read(2)
              }
          }
          if (mode === MP2.MODE.MONO) {
              this.scaleFactorInfo[1][sb] = this.scaleFactorInfo[0][sb]
          }
      }
      for (var sb = 0; sb < sblimit; sb++) {
          for (var ch = 0; ch < channels; ch++) {
              if (this.allocation[ch][sb]) {
                  var sf = this.scaleFactor[ch][sb];
                  switch (this.scaleFactorInfo[ch][sb]) {
                  case 0:
                      sf[0] = this.bits.read(6);
                      sf[1] = this.bits.read(6);
                      sf[2] = this.bits.read(6);
                      break;
                  case 1:
                      sf[0] = sf[1] = this.bits.read(6);
                      sf[2] = this.bits.read(6);
                      break;
                  case 2:
                      sf[0] = sf[1] = sf[2] = this.bits.read(6);
                      break;
                  case 3:
                      sf[0] = this.bits.read(6);
                      sf[1] = sf[2] = this.bits.read(6);
                      break
                  }
              }
          }
          if (mode === MP2.MODE.MONO) {
              this.scaleFactor[1][sb][0] = this.scaleFactor[0][sb][0];
              this.scaleFactor[1][sb][1] = this.scaleFactor[0][sb][1];
              this.scaleFactor[1][sb][2] = this.scaleFactor[0][sb][2]
          }
      }
      var outPos = 0;
      for (var part = 0; part < 3; part++) {
          for (var granule = 0; granule < 4; granule++) {
              for (var sb = 0; sb < bound; sb++) {
                  this.readSamples(0, sb, part);
                  this.readSamples(1, sb, part)
              }
              for (var sb = bound; sb < sblimit; sb++) {
                  this.readSamples(0, sb, part);
                  this.sample[1][sb][0] = this.sample[0][sb][0];
                  this.sample[1][sb][1] = this.sample[0][sb][1];
                  this.sample[1][sb][2] = this.sample[0][sb][2]
              }
              for (var sb = sblimit; sb < 32; sb++) {
                  this.sample[0][sb][0] = 0;
                  this.sample[0][sb][1] = 0;
                  this.sample[0][sb][2] = 0;
                  this.sample[1][sb][0] = 0;
                  this.sample[1][sb][1] = 0;
                  this.sample[1][sb][2] = 0
              }
              for (var p = 0; p < 3; p++) {
                  this.VPos = this.VPos - 64 & 1023;
                  for (var ch = 0; ch < 2; ch++) {
                      MP2.MatrixTransform(this.sample[ch], p, this.V, this.VPos);
                      JSMpeg.Fill(this.U, 0);
                      var dIndex = 512 - (this.VPos >> 1);
                      var vIndex = this.VPos % 128 >> 1;
                      while (vIndex < 1024) {
                          for (var i = 0; i < 32; ++i) {
                              this.U[i] += this.D[dIndex++] * this.V[vIndex++]
                          }
                          vIndex += 128 - 32;
                          dIndex += 64 - 32
                      }
                      vIndex = 128 - 32 + 1024 - vIndex;
                      dIndex -= 512 - 32;
                      while (vIndex < 1024) {
                          for (var i = 0; i < 32; ++i) {
                              this.U[i] += this.D[dIndex++] * this.V[vIndex++]
                          }
                          vIndex += 128 - 32;
                          dIndex += 64 - 32
                      }
                      var outChannel = ch === 0 ? left: right;
                      for (var j = 0; j < 32; j++) {
                          outChannel[outPos + j] = this.U[j] / 2147418112
                      }
                  }
                  outPos += 32
              }
          }
      }
      this.sampleRate = sampleRate;
      return frameSize
  };
  MP2.prototype.readAllocation = function(sb, tab3) {
      var tab4 = MP2.QUANT_LUT_STEP_3[tab3][sb];
      var qtab = MP2.QUANT_LUT_STEP4[tab4 & 15][this.bits.read(tab4 >> 4)];
      return qtab ? MP2.QUANT_TAB[qtab - 1] : 0
  };
  MP2.prototype.readSamples = function(ch, sb, part) {
      var q = this.allocation[ch][sb],
      sf = this.scaleFactor[ch][sb][part],
      sample = this.sample[ch][sb],
      val = 0;
      if (!q) {
          sample[0] = sample[1] = sample[2] = 0;
          return
      }
      if (sf === 63) {
          sf = 0
      } else {
          var shift = sf / 3 | 0;
          sf = MP2.SCALEFACTOR_BASE[sf % 3] + (1 << shift >> 1) >> shift
      }
      var adj = q.levels;
      if (q.group) {
          val = this.bits.read(q.bits);
          sample[0] = val % adj;
          val = val / adj | 0;
          sample[1] = val % adj;
          sample[2] = val / adj | 0
      } else {
          sample[0] = this.bits.read(q.bits);
          sample[1] = this.bits.read(q.bits);
          sample[2] = this.bits.read(q.bits)
      }
      var scale = 65536 / (adj + 1) | 0;
      adj = (adj + 1 >> 1) - 1;
      val = (adj - sample[0]) * scale;
      sample[0] = val * (sf >> 12) + (val * (sf & 4095) + 2048 >> 12) >> 12;
      val = (adj - sample[1]) * scale;
      sample[1] = val * (sf >> 12) + (val * (sf & 4095) + 2048 >> 12) >> 12;
      val = (adj - sample[2]) * scale;
      sample[2] = val * (sf >> 12) + (val * (sf & 4095) + 2048 >> 12) >> 12
  };
  MP2.MatrixTransform = function(s, ss, d, dp) {
      var t01, t02, t03, t04, t05, t06, t07, t08, t09, t10, t11, t12, t13, t14, t15, t16, t17, t18, t19, t20, t21, t22, t23, t24, t25, t26, t27, t28, t29, t30, t31, t32, t33;
      t01 = s[0][ss] + s[31][ss];
      t02 = (s[0][ss] - s[31][ss]) * .500602998235;
      t03 = s[1][ss] + s[30][ss];
      t04 = (s[1][ss] - s[30][ss]) * .505470959898;
      t05 = s[2][ss] + s[29][ss];
      t06 = (s[2][ss] - s[29][ss]) * .515447309923;
      t07 = s[3][ss] + s[28][ss];
      t08 = (s[3][ss] - s[28][ss]) * .53104259109;
      t09 = s[4][ss] + s[27][ss];
      t10 = (s[4][ss] - s[27][ss]) * .553103896034;
      t11 = s[5][ss] + s[26][ss];
      t12 = (s[5][ss] - s[26][ss]) * .582934968206;
      t13 = s[6][ss] + s[25][ss];
      t14 = (s[6][ss] - s[25][ss]) * .622504123036;
      t15 = s[7][ss] + s[24][ss];
      t16 = (s[7][ss] - s[24][ss]) * .674808341455;
      t17 = s[8][ss] + s[23][ss];
      t18 = (s[8][ss] - s[23][ss]) * .744536271002;
      t19 = s[9][ss] + s[22][ss];
      t20 = (s[9][ss] - s[22][ss]) * .839349645416;
      t21 = s[10][ss] + s[21][ss];
      t22 = (s[10][ss] - s[21][ss]) * .972568237862;
      t23 = s[11][ss] + s[20][ss];
      t24 = (s[11][ss] - s[20][ss]) * 1.16943993343;
      t25 = s[12][ss] + s[19][ss];
      t26 = (s[12][ss] - s[19][ss]) * 1.48416461631;
      t27 = s[13][ss] + s[18][ss];
      t28 = (s[13][ss] - s[18][ss]) * 2.05778100995;
      t29 = s[14][ss] + s[17][ss];
      t30 = (s[14][ss] - s[17][ss]) * 3.40760841847;
      t31 = s[15][ss] + s[16][ss];
      t32 = (s[15][ss] - s[16][ss]) * 10.1900081235;
      t33 = t01 + t31;
      t31 = (t01 - t31) * .502419286188;
      t01 = t03 + t29;
      t29 = (t03 - t29) * .52249861494;
      t03 = t05 + t27;
      t27 = (t05 - t27) * .566944034816;
      t05 = t07 + t25;
      t25 = (t07 - t25) * .64682178336;
      t07 = t09 + t23;
      t23 = (t09 - t23) * .788154623451;
      t09 = t11 + t21;
      t21 = (t11 - t21) * 1.06067768599;
      t11 = t13 + t19;
      t19 = (t13 - t19) * 1.72244709824;
      t13 = t15 + t17;
      t17 = (t15 - t17) * 5.10114861869;
      t15 = t33 + t13;
      t13 = (t33 - t13) * .509795579104;
      t33 = t01 + t11;
      t01 = (t01 - t11) * .601344886935;
      t11 = t03 + t09;
      t09 = (t03 - t09) * .899976223136;
      t03 = t05 + t07;
      t07 = (t05 - t07) * 2.56291544774;
      t05 = t15 + t03;
      t15 = (t15 - t03) * .541196100146;
      t03 = t33 + t11;
      t11 = (t33 - t11) * 1.30656296488;
      t33 = t05 + t03;
      t05 = (t05 - t03) * .707106781187;
      t03 = t15 + t11;
      t15 = (t15 - t11) * .707106781187;
      t03 += t15;
      t11 = t13 + t07;
      t13 = (t13 - t07) * .541196100146;
      t07 = t01 + t09;
      t09 = (t01 - t09) * 1.30656296488;
      t01 = t11 + t07;
      t07 = (t11 - t07) * .707106781187;
      t11 = t13 + t09;
      t13 = (t13 - t09) * .707106781187;
      t11 += t13;
      t01 += t11;
      t11 += t07;
      t07 += t13;
      t09 = t31 + t17;
      t31 = (t31 - t17) * .509795579104;
      t17 = t29 + t19;
      t29 = (t29 - t19) * .601344886935;
      t19 = t27 + t21;
      t21 = (t27 - t21) * .899976223136;
      t27 = t25 + t23;
      t23 = (t25 - t23) * 2.56291544774;
      t25 = t09 + t27;
      t09 = (t09 - t27) * .541196100146;
      t27 = t17 + t19;
      t19 = (t17 - t19) * 1.30656296488;
      t17 = t25 + t27;
      t27 = (t25 - t27) * .707106781187;
      t25 = t09 + t19;
      t19 = (t09 - t19) * .707106781187;
      t25 += t19;
      t09 = t31 + t23;
      t31 = (t31 - t23) * .541196100146;
      t23 = t29 + t21;
      t21 = (t29 - t21) * 1.30656296488;
      t29 = t09 + t23;
      t23 = (t09 - t23) * .707106781187;
      t09 = t31 + t21;
      t31 = (t31 - t21) * .707106781187;
      t09 += t31;
      t29 += t09;
      t09 += t23;
      t23 += t31;
      t17 += t29;
      t29 += t25;
      t25 += t09;
      t09 += t27;
      t27 += t23;
      t23 += t19;
      t19 += t31;
      t21 = t02 + t32;
      t02 = (t02 - t32) * .502419286188;
      t32 = t04 + t30;
      t04 = (t04 - t30) * .52249861494;
      t30 = t06 + t28;
      t28 = (t06 - t28) * .566944034816;
      t06 = t08 + t26;
      t08 = (t08 - t26) * .64682178336;
      t26 = t10 + t24;
      t10 = (t10 - t24) * .788154623451;
      t24 = t12 + t22;
      t22 = (t12 - t22) * 1.06067768599;
      t12 = t14 + t20;
      t20 = (t14 - t20) * 1.72244709824;
      t14 = t16 + t18;
      t16 = (t16 - t18) * 5.10114861869;
      t18 = t21 + t14;
      t14 = (t21 - t14) * .509795579104;
      t21 = t32 + t12;
      t32 = (t32 - t12) * .601344886935;
      t12 = t30 + t24;
      t24 = (t30 - t24) * .899976223136;
      t30 = t06 + t26;
      t26 = (t06 - t26) * 2.56291544774;
      t06 = t18 + t30;
      t18 = (t18 - t30) * .541196100146;
      t30 = t21 + t12;
      t12 = (t21 - t12) * 1.30656296488;
      t21 = t06 + t30;
      t30 = (t06 - t30) * .707106781187;
      t06 = t18 + t12;
      t12 = (t18 - t12) * .707106781187;
      t06 += t12;
      t18 = t14 + t26;
      t26 = (t14 - t26) * .541196100146;
      t14 = t32 + t24;
      t24 = (t32 - t24) * 1.30656296488;
      t32 = t18 + t14;
      t14 = (t18 - t14) * .707106781187;
      t18 = t26 + t24;
      t24 = (t26 - t24) * .707106781187;
      t18 += t24;
      t32 += t18;
      t18 += t14;
      t26 = t14 + t24;
      t14 = t02 + t16;
      t02 = (t02 - t16) * .509795579104;
      t16 = t04 + t20;
      t04 = (t04 - t20) * .601344886935;
      t20 = t28 + t22;
      t22 = (t28 - t22) * .899976223136;
      t28 = t08 + t10;
      t10 = (t08 - t10) * 2.56291544774;
      t08 = t14 + t28;
      t14 = (t14 - t28) * .541196100146;
      t28 = t16 + t20;
      t20 = (t16 - t20) * 1.30656296488;
      t16 = t08 + t28;
      t28 = (t08 - t28) * .707106781187;
      t08 = t14 + t20;
      t20 = (t14 - t20) * .707106781187;
      t08 += t20;
      t14 = t02 + t10;
      t02 = (t02 - t10) * .541196100146;
      t10 = t04 + t22;
      t22 = (t04 - t22) * 1.30656296488;
      t04 = t14 + t10;
      t10 = (t14 - t10) * .707106781187;
      t14 = t02 + t22;
      t02 = (t02 - t22) * .707106781187;
      t14 += t02;
      t04 += t14;
      t14 += t10;
      t10 += t02;
      t16 += t04;
      t04 += t08;
      t08 += t14;
      t14 += t28;
      t28 += t10;
      t10 += t20;
      t20 += t02;
      t21 += t16;
      t16 += t32;
      t32 += t04;
      t04 += t06;
      t06 += t08;
      t08 += t18;
      t18 += t14;
      t14 += t30;
      t30 += t28;
      t28 += t26;
      t26 += t10;
      t10 += t12;
      t12 += t20;
      t20 += t24;
      t24 += t02;
      d[dp + 48] = -t33;
      d[dp + 49] = d[dp + 47] = -t21;
      d[dp + 50] = d[dp + 46] = -t17;
      d[dp + 51] = d[dp + 45] = -t16;
      d[dp + 52] = d[dp + 44] = -t01;
      d[dp + 53] = d[dp + 43] = -t32;
      d[dp + 54] = d[dp + 42] = -t29;
      d[dp + 55] = d[dp + 41] = -t04;
      d[dp + 56] = d[dp + 40] = -t03;
      d[dp + 57] = d[dp + 39] = -t06;
      d[dp + 58] = d[dp + 38] = -t25;
      d[dp + 59] = d[dp + 37] = -t08;
      d[dp + 60] = d[dp + 36] = -t11;
      d[dp + 61] = d[dp + 35] = -t18;
      d[dp + 62] = d[dp + 34] = -t09;
      d[dp + 63] = d[dp + 33] = -t14;
      d[dp + 32] = -t05;
      d[dp + 0] = t05;
      d[dp + 31] = -t30;
      d[dp + 1] = t30;
      d[dp + 30] = -t27;
      d[dp + 2] = t27;
      d[dp + 29] = -t28;
      d[dp + 3] = t28;
      d[dp + 28] = -t07;
      d[dp + 4] = t07;
      d[dp + 27] = -t26;
      d[dp + 5] = t26;
      d[dp + 26] = -t23;
      d[dp + 6] = t23;
      d[dp + 25] = -t10;
      d[dp + 7] = t10;
      d[dp + 24] = -t15;
      d[dp + 8] = t15;
      d[dp + 23] = -t12;
      d[dp + 9] = t12;
      d[dp + 22] = -t19;
      d[dp + 10] = t19;
      d[dp + 21] = -t20;
      d[dp + 11] = t20;
      d[dp + 20] = -t13;
      d[dp + 12] = t13;
      d[dp + 19] = -t24;
      d[dp + 13] = t24;
      d[dp + 18] = -t31;
      d[dp + 14] = t31;
      d[dp + 17] = -t02;
      d[dp + 15] = t02;
      d[dp + 16] = 0
  };
  MP2.FRAME_SYNC = 2047;
  MP2.VERSION = {
      MPEG_2_5: 0,
      MPEG_2: 2,
      MPEG_1: 3
  };
  MP2.LAYER = {
      III: 1,
      II: 2,
      I: 3
  };
  MP2.MODE = {
      STEREO: 0,
      JOINT_STEREO: 1,
      DUAL_CHANNEL: 2,
      MONO: 3
  };
  MP2.SAMPLE_RATE = new Uint16Array([44100, 48e3, 32e3, 0, 22050, 24e3, 16e3, 0]);
  MP2.BIT_RATE = new Uint16Array([32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160]);
  MP2.SCALEFACTOR_BASE = new Uint32Array([33554432, 26632170, 21137968]);
  MP2.SYNTHESIS_WINDOW = new Float32Array([0, -.5, -.5, -.5, -.5, -.5, -.5, -1, -1, -1, -1, -1.5, -1.5, -2, -2, -2.5, -2.5, -3, -3.5, -3.5, -4, -4.5, -5, -5.5, -6.5, -7, -8, -8.5, -9.5, -10.5, -12, -13, -14.5, -15.5, -17.5, -19, -20.5, -22.5, -24.5, -26.5, -29, -31.5, -34, -36.5, -39.5, -42.5, -45.5, -48.5, -52, -55.5, -58.5, -62.5, -66, -69.5, -73.5, -77, -80.5, -84.5, -88, -91.5, -95, -98, -101, -104, 106.5, 109, 111, 112.5, 113.5, 114, 114, 113.5, 112, 110.5, 107.5, 104, 100, 94.5, 88.5, 81.5, 73, 63.5, 53, 41.5, 28.5, 14.5, -1, -18, -36, -55.5, -76.5, -98.5, -122, -147, -173.5, -200.5, -229.5, -259.5, -290.5, -322.5, -355.5, -389.5, -424, -459.5, -495.5, -532, -568.5, -605, -641.5, -678, -714, -749, -783.5, -817, -849, -879.5, -908.5, -935, -959.5, -981, -1000.5, -1016, -1028.5, -1037.5, -1042.5, -1043.5, -1040, -1031.5, 1018.5, 1e3, 976, 946.5, 911, 869.5, 822, 767.5, 707, 640, 565.5, 485, 397, 302.5, 201, 92.5, -22.5, -144, -272.5, -407, -547.5, -694, -846, -1003, -1165, -1331.5, -1502, -1675.5, -1852.5, -2031.5, -2212.5, -2394, -2576.5, -2758.5, -2939.5, -3118.5, -3294.5, -3467.5, -3635.5, -3798.5, -3955, -4104.5, -4245.5, -4377.5, -4499, -4609.5, -4708, -4792.5, -4863.5, -4919, -4958, -4979.5, -4983, -4967.5, -4931.5, -4875, -4796, -4694.5, -4569.5, -4420, -4246, -4046, -3820, -3567, 3287, 2979.5, 2644, 2280.5, 1888, 1467.5, 1018.5, 541, 35, -499, -1061, -1650, -2266.5, -2909, -3577, -4270, -4987.5, -5727.5, -6490, -7274, -8077.5, -8899.5, -9739, -10594.5, -11464.5, -12347, -13241, -14144.5, -15056, -15973.5, -16895.5, -17820, -18744.5, -19668, -20588, -21503, -22410.5, -23308.5, -24195, -25068.5, -25926.5, -26767, -27589, -28389, -29166.5, -29919, -30644.5, -31342, -32009.5, -32645, -33247, -33814.5, -34346, -34839.5, -35295, -35710, -36084.5, -36417.5, -36707.5, -36954, -37156.5, -37315, -37428, -37496, 37519, 37496, 37428, 37315, 37156.5, 36954, 36707.5, 36417.5, 36084.5, 35710, 35295, 34839.5, 34346, 33814.5, 33247, 32645, 32009.5, 31342, 30644.5, 29919, 29166.5, 28389, 27589, 26767, 25926.5, 25068.5, 24195, 23308.5, 22410.5, 21503, 20588, 19668, 18744.5, 17820, 16895.5, 15973.5, 15056, 14144.5, 13241, 12347, 11464.5, 10594.5, 9739, 8899.5, 8077.5, 7274, 6490, 5727.5, 4987.5, 4270, 3577, 2909, 2266.5, 1650, 1061, 499, -35, -541, -1018.5, -1467.5, -1888, -2280.5, -2644, -2979.5, 3287, 3567, 3820, 4046, 4246, 4420, 4569.5, 4694.5, 4796, 4875, 4931.5, 4967.5, 4983, 4979.5, 4958, 4919, 4863.5, 4792.5, 4708, 4609.5, 4499, 4377.5, 4245.5, 4104.5, 3955, 3798.5, 3635.5, 3467.5, 3294.5, 3118.5, 2939.5, 2758.5, 2576.5, 2394, 2212.5, 2031.5, 1852.5, 1675.5, 1502, 1331.5, 1165, 1003, 846, 694, 547.5, 407, 272.5, 144, 22.5, -92.5, -201, -302.5, -397, -485, -565.5, -640, -707, -767.5, -822, -869.5, -911, -946.5, -976, -1e3, 1018.5, 1031.5, 1040, 1043.5, 1042.5, 1037.5, 1028.5, 1016, 1000.5, 981, 959.5, 935, 908.5, 879.5, 849, 817, 783.5, 749, 714, 678, 641.5, 605, 568.5, 532, 495.5, 459.5, 424, 389.5, 355.5, 322.5, 290.5, 259.5, 229.5, 200.5, 173.5, 147, 122, 98.5, 76.5, 55.5, 36, 18, 1, -14.5, -28.5, -41.5, -53, -63.5, -73, -81.5, -88.5, -94.5, -100, -104, -107.5, -110.5, -112, -113.5, -114, -114, -113.5, -112.5, -111, -109, 106.5, 104, 101, 98, 95, 91.5, 88, 84.5, 80.5, 77, 73.5, 69.5, 66, 62.5, 58.5, 55.5, 52, 48.5, 45.5, 42.5, 39.5, 36.5, 34, 31.5, 29, 26.5, 24.5, 22.5, 20.5, 19, 17.5, 15.5, 14.5, 13, 12, 10.5, 9.5, 8.5, 8, 7, 6.5, 5.5, 5, 4.5, 4, 3.5, 3.5, 3, 2.5, 2.5, 2, 2, 1.5, 1.5, 1, 1, 1, 1, .5, .5, .5, .5, .5, .5]);
  MP2.QUANT_LUT_STEP_1 = [[0, 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2], [0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 2]];
  MP2.QUANT_TAB = {
      A: 27 | 64,
      B: 30 | 64,
      C: 8,
      D: 12
  };
  MP2.QUANT_LUT_STEP_2 = [[MP2.QUANT_TAB.C, MP2.QUANT_TAB.C, MP2.QUANT_TAB.D], [MP2.QUANT_TAB.A, MP2.QUANT_TAB.A, MP2.QUANT_TAB.A], [MP2.QUANT_TAB.B, MP2.QUANT_TAB.A, MP2.QUANT_TAB.B]];
  MP2.QUANT_LUT_STEP_3 = [[68, 68, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52], [67, 67, 67, 66, 66, 66, 66, 66, 66, 66, 66, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 32, 32, 32, 32, 32, 32, 32], [69, 69, 69, 69, 52, 52, 52, 52, 52, 52, 52, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36]];
  MP2.QUANT_LUT_STEP4 = [[0, 1, 2, 17], [0, 1, 2, 3, 4, 5, 6, 17], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17], [0, 1, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17], [0, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]];
  MP2.QUANT_TAB = [{
      levels: 3,
      group: 1,
      bits: 5
  },
  {
      levels: 5,
      group: 1,
      bits: 7
  },
  {
      levels: 7,
      group: 0,
      bits: 3
  },
  {
      levels: 9,
      group: 1,
      bits: 10
  },
  {
      levels: 15,
      group: 0,
      bits: 4
  },
  {
      levels: 31,
      group: 0,
      bits: 5
  },
  {
      levels: 63,
      group: 0,
      bits: 6
  },
  {
      levels: 127,
      group: 0,
      bits: 7
  },
  {
      levels: 255,
      group: 0,
      bits: 8
  },
  {
      levels: 511,
      group: 0,
      bits: 9
  },
  {
      levels: 1023,
      group: 0,
      bits: 10
  },
  {
      levels: 2047,
      group: 0,
      bits: 11
  },
  {
      levels: 4095,
      group: 0,
      bits: 12
  },
  {
      levels: 8191,
      group: 0,
      bits: 13
  },
  {
      levels: 16383,
      group: 0,
      bits: 14
  },
  {
      levels: 32767,
      group: 0,
      bits: 15
  },
  {
      levels: 65535,
      group: 0,
      bits: 16
  }];
  return MP2
} ();
JSMpeg.Renderer.WebGL = function() {
  "use strict";
  var WebGLRenderer = function(options) {
      this.canvas = options.canvas || document.createElement("canvas");
      this.width = this.canvas.width;
      this.height = this.canvas.height;
      this.enabled = true;
      var contextCreateOptions = {
          preserveDrawingBuffer: !!options.preserveDrawingBuffer,
          alpha: false,
          depth: false,
          stencil: false,
          antialias: false
      };
      this.gl = this.canvas.getContext("webgl", contextCreateOptions) || this.canvas.getContext("experimental-webgl", contextCreateOptions);
      if (!this.gl) {
          throw new Error("Failed to get WebGL Context")
      }
      var gl = this.gl;
      var vertexAttr = null;
      this.vertexBuffer = gl.createBuffer();
      var vertexCoords = new Float32Array([0, 0, 0, 1, 1, 0, 1, 1]);
      gl.bindBuffer(gl.ARRAY_BUFFER, this.vertexBuffer);
      gl.bufferData(gl.ARRAY_BUFFER, vertexCoords, gl.STATIC_DRAW);
      this.program = this.createProgram(WebGLRenderer.SHADER.VERTEX_IDENTITY, WebGLRenderer.SHADER.FRAGMENT_YCRCB_TO_RGBA);
      vertexAttr = gl.getAttribLocation(this.program, "vertex");
      gl.enableVertexAttribArray(vertexAttr);
      gl.vertexAttribPointer(vertexAttr, 2, gl.FLOAT, false, 0, 0);
      this.textureY = this.createTexture(0, "textureY");
      this.textureCb = this.createTexture(1, "textureCb");
      this.textureCr = this.createTexture(2, "textureCr");
      this.loadingProgram = this.createProgram(WebGLRenderer.SHADER.VERTEX_IDENTITY, WebGLRenderer.SHADER.FRAGMENT_LOADING);
      vertexAttr = gl.getAttribLocation(this.loadingProgram, "vertex");
      gl.enableVertexAttribArray(vertexAttr);
      gl.vertexAttribPointer(vertexAttr, 2, gl.FLOAT, false, 0, 0);
      this.shouldCreateUnclampedViews = !this.allowsClampedTextureData()
  };
  WebGLRenderer.prototype.destroy = function() {
      var gl = this.gl;
      gl.deleteTexture(this.textureY);
      gl.deleteTexture(this.textureCb);
      gl.deleteTexture(this.textureCr);
      gl.deleteProgram(this.program);
      gl.deleteProgram(this.loadingProgram);
      gl.deleteBuffer(this.vertexBuffer)
  };
  WebGLRenderer.prototype.resize = function(width, height) {
      this.width = width | 0;
      this.height = height | 0;
      this.canvas.width = this.width;
      this.canvas.height = this.height;
      this.gl.useProgram(this.program);
      this.gl.viewport(0, 0, this.width, this.height)
  };
  WebGLRenderer.prototype.createTexture = function(index, name) {
      var gl = this.gl;
      var texture = gl.createTexture();
      gl.bindTexture(gl.TEXTURE_2D, texture);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
      gl.uniform1i(gl.getUniformLocation(this.program, name), index);
      return texture
  };
  WebGLRenderer.prototype.createProgram = function(vsh, fsh) {
      var gl = this.gl;
      var program = gl.createProgram();
      gl.attachShader(program, this.compileShader(gl.VERTEX_SHADER, vsh));
      gl.attachShader(program, this.compileShader(gl.FRAGMENT_SHADER, fsh));
      gl.linkProgram(program);
      gl.useProgram(program);
      return program
  };
  WebGLRenderer.prototype.compileShader = function(type, source) {
      var gl = this.gl;
      var shader = gl.createShader(type);
      gl.shaderSource(shader, source);
      gl.compileShader(shader);
      if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
          throw new Error(gl.getShaderInfoLog(shader))
      }
      return shader
  };
  WebGLRenderer.prototype.allowsClampedTextureData = function() {
      var gl = this.gl;
      var texture = gl.createTexture();
      gl.bindTexture(gl.TEXTURE_2D, texture);
      gl.texImage2D(gl.TEXTURE_2D, 0, gl.LUMINANCE, 1, 1, 0, gl.LUMINANCE, gl.UNSIGNED_BYTE, new Uint8ClampedArray([0]));
      return gl.getError() === 0
  };
  WebGLRenderer.prototype.renderProgress = function(progress) {
      var gl = this.gl;
      gl.useProgram(this.loadingProgram);
      var loc = gl.getUniformLocation(this.loadingProgram, "progress");
      gl.uniform1f(loc, progress);
      gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  };
  WebGLRenderer.prototype.render = function(y, cb, cr) {
      if (!this.enabled) {
          return
      }
      var gl = this.gl;
      var w = this.width + 15 >> 4 << 4,
      h = this.height,
      w2 = w >> 1,
      h2 = h >> 1;
      if (this.shouldCreateUnclampedViews) {
          y = new Uint8Array(y.buffer),
          cb = new Uint8Array(cb.buffer),
          cr = new Uint8Array(cr.buffer)
      }
      gl.useProgram(this.program);
      this.updateTexture(gl.TEXTURE0, this.textureY, w, h, y);
      this.updateTexture(gl.TEXTURE1, this.textureCb, w2, h2, cb);
      this.updateTexture(gl.TEXTURE2, this.textureCr, w2, h2, cr);
      gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  };
  WebGLRenderer.prototype.updateTexture = function(unit, texture, w, h, data) {
      var gl = this.gl;
      gl.activeTexture(unit);
      gl.bindTexture(gl.TEXTURE_2D, texture);
      gl.texImage2D(gl.TEXTURE_2D, 0, gl.LUMINANCE, w, h, 0, gl.LUMINANCE, gl.UNSIGNED_BYTE, data)
  };
  WebGLRenderer.IsSupported = function() {
      try {
          if (!window.WebGLRenderingContext) {
              return false
          }
          var canvas = document.createElement("canvas");
          return !! (canvas.getContext("webgl") || canvas.getContext("experimental-webgl"))
      } catch(err) {
          return false
      }
  };
  WebGLRenderer.SHADER = {
      FRAGMENT_YCRCB_TO_RGBA: ["precision mediump float;", "uniform sampler2D textureY;", "uniform sampler2D textureCb;", "uniform sampler2D textureCr;", "varying vec2 texCoord;", "mat4 rec601 = mat4(", "1.16438,  0.00000,  1.59603, -0.87079,", "1.16438, -0.39176, -0.81297,  0.52959,", "1.16438,  2.01723,  0.00000, -1.08139,", "0, 0, 0, 1", ");", "void main() {", "float y = texture2D(textureY, texCoord).r;", "float cb = texture2D(textureCb, texCoord).r;", "float cr = texture2D(textureCr, texCoord).r;", "gl_FragColor = vec4(y, cr, cb, 1.0) * rec601;", "}"].join("
"),
      FRAGMENT_LOADING: ["precision mediump float;", "uniform float progress;", "varying vec2 texCoord;", "void main() {", "float c = ceil(progress-(1.0-texCoord.y));", "gl_FragColor = vec4(c,c,c,1);", "}"].join("
"),
      VERTEX_IDENTITY: ["attribute vec2 vertex;", "varying vec2 texCoord;", "void main() {", "texCoord = vertex;", "gl_Position = vec4((vertex * 2.0 - 1.0) * vec2(1, -1), 0.0, 1.0);", "}"].join("
")
  };
  return WebGLRenderer
} ();
JSMpeg.Renderer.Canvas2D = function() {
  "use strict";
  var CanvasRenderer = function(options) {
      this.canvas = options.canvas || document.createElement("canvas");
      this.width = this.canvas.width;
      this.height = this.canvas.height;
      this.enabled = true;
      this.context = this.canvas.getContext("2d")
  };
  CanvasRenderer.prototype.destroy = function() {};
  CanvasRenderer.prototype.resize = function(width, height) {
      this.width = width | 0;
      this.height = height | 0;
      this.canvas.width = this.width;
      this.canvas.height = this.height;
      this.imageData = this.context.getImageData(0, 0, this.width, this.height);
      JSMpeg.Fill(this.imageData.data, 255)
  };
  CanvasRenderer.prototype.renderProgress = function(progress) {
      var w = this.canvas.width,
      h = this.canvas.height,
      ctx = this.context;
      ctx.fillStyle = "#222";
      ctx.fillRect(0, 0, w, h);
      ctx.fillStyle = "#fff";
      ctx.fillRect(0, h - h * progress, w, h * progress)
  };
  CanvasRenderer.prototype.render = function(y, cb, cr) {
      this.YCbCrToRGBA(y, cb, cr, this.imageData.data);
      this.context.putImageData(this.imageData, 0, 0)
  };
  CanvasRenderer.prototype.YCbCrToRGBA = function(y, cb, cr, rgba) {
      if (!this.enabled) {
          return
      }
      var w = this.width + 15 >> 4 << 4,
      w2 = w >> 1;
      var yIndex1 = 0,
      yIndex2 = w,
      yNext2Lines = w + (w - this.width);
      var cIndex = 0,
      cNextLine = w2 - (this.width >> 1);
      var rgbaIndex1 = 0,
      rgbaIndex2 = this.width * 4,
      rgbaNext2Lines = this.width * 4;
      var cols = this.width >> 1,
      rows = this.height >> 1;
      var ccb, ccr, r, g, b;
      for (var row = 0; row < rows; row++) {
          for (var col = 0; col < cols; col++) {
              ccb = cb[cIndex];
              ccr = cr[cIndex];
              cIndex++;
              r = ccb + (ccb * 103 >> 8) - 179;
              g = (ccr * 88 >> 8) - 44 + (ccb * 183 >> 8) - 91;
              b = ccr + (ccr * 198 >> 8) - 227;
              var y1 = y[yIndex1++];
              var y2 = y[yIndex1++];
              rgba[rgbaIndex1] = y1 + r;
              rgba[rgbaIndex1 + 1] = y1 - g;
              rgba[rgbaIndex1 + 2] = y1 + b;
              rgba[rgbaIndex1 + 4] = y2 + r;
              rgba[rgbaIndex1 + 5] = y2 - g;
              rgba[rgbaIndex1 + 6] = y2 + b;
              rgbaIndex1 += 8;
              var y3 = y[yIndex2++];
              var y4 = y[yIndex2++];
              rgba[rgbaIndex2] = y3 + r;
              rgba[rgbaIndex2 + 1] = y3 - g;
              rgba[rgbaIndex2 + 2] = y3 + b;
              rgba[rgbaIndex2 + 4] = y4 + r;
              rgba[rgbaIndex2 + 5] = y4 - g;
              rgba[rgbaIndex2 + 6] = y4 + b;
              rgbaIndex2 += 8
          }
          yIndex1 += yNext2Lines;
          yIndex2 += yNext2Lines;
          rgbaIndex1 += rgbaNext2Lines;
          rgbaIndex2 += rgbaNext2Lines;
          cIndex += cNextLine
      }
  };
  return CanvasRenderer
} ();
JSMpeg.AudioOutput.WebAudio = function() {
  "use strict";
  var WebAudioOut = function(options) {
      this.context = WebAudioOut.CachedContext = WebAudioOut.CachedContext || new(window.AudioContext || window.webkitAudioContext);
      this.gain = this.context.createGain();
      this.destination = this.gain;
      this.gain.connect(this.context.destination);
      this.context._connections = (this.context._connections || 0) + 1;
      this.startTime = 0;
      this.buffer = null;
      this.wallclockStartTime = 0;
      this.volume = 1;
      this.enabled = true;
      this.unlocked = !WebAudioOut.NeedsUnlocking();
      Object.defineProperty(this, "enqueuedTime", {
          get: this.getEnqueuedTime
      })
  };
  WebAudioOut.prototype.destroy = function() {
      this.gain.disconnect();
      this.context._connections--;
      if (this.context._connections === 0) {
          this.context.close();
          WebAudioOut.CachedContext = null
      }
  };
  WebAudioOut.prototype.play = function(sampleRate, left, right) {
      if (!this.enabled) {
          return
      }
      if (!this.unlocked) {
          var ts = JSMpeg.Now();
          if (this.wallclockStartTime < ts) {
              this.wallclockStartTime = ts
          }
          this.wallclockStartTime += left.length / sampleRate;
          return
      }
      this.gain.gain.value = this.volume;
      var buffer = this.context.createBuffer(2, left.length, sampleRate);
      buffer.getChannelData(0).set(left);
      buffer.getChannelData(1).set(right);
      var source = this.context.createBufferSource();
      source.buffer = buffer;
      source.connect(this.destination);
      var now = this.context.currentTime;
      var duration = buffer.duration;
      if (this.startTime < now) {
          this.startTime = now;
          this.wallclockStartTime = JSMpeg.Now()
      }
      source.start(this.startTime);
      this.startTime += duration;
      this.wallclockStartTime += duration
  };
  WebAudioOut.prototype.stop = function() {
      this.gain.gain.value = 0
  };
  WebAudioOut.prototype.getEnqueuedTime = function() {
      return Math.max(this.wallclockStartTime - JSMpeg.Now(), 0)
  };
  WebAudioOut.prototype.resetEnqueuedTime = function() {
      this.startTime = this.context.currentTime;
      this.wallclockStartTime = JSMpeg.Now()
  };
  WebAudioOut.prototype.unlock = function(callback) {
      if (this.unlocked) {
          if (callback) {
              callback()
          }
          return
      }
      this.unlockCallback = callback;
      var buffer = this.context.createBuffer(1, 1, 22050);
      var source = this.context.createBufferSource();
      source.buffer = buffer;
      source.connect(this.destination);
      source.start(0);
      setTimeout(this.checkIfUnlocked.bind(this, source, 0), 0)
  };
  WebAudioOut.prototype.checkIfUnlocked = function(source, attempt) {
      if (source.playbackState === source.PLAYING_STATE || source.playbackState === source.FINISHED_STATE) {
          this.unlocked = true;
          if (this.unlockCallback) {
              this.unlockCallback();
              this.unlockCallback = null
          }
      } else if (attempt < 10) {
          setTimeout(this.checkIfUnlocked.bind(this, source, attempt + 1), 100)
      }
  };
  WebAudioOut.NeedsUnlocking = function() {
      return /iPhone|iPad|iPod/i.test(navigator.userAgent)
  };
  WebAudioOut.IsSupported = function() {
      return window.AudioContext || window.webkitAudioContext
  };
  WebAudioOut.CachedContext = null;
  return WebAudioOut
} ();