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gaia/tv_apps/fling-player/js/video_player.js

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+(function(exports) {
+  'use strict';
+
+  /**
+   * This class is a thin wrapper of HTMLVideoElement
+   * @param {HTMLVideoElement}
+   */
+  function VideoPlayer(video) {
+    this._video = video;
+  }
+
+  var proto = VideoPlayer.prototype;
+
+  proto.init = function vp_init() {
+    this._video.mozAudioChannelType = 'content';
+
+    this._isLoaded = false;
+
+    this._video.addEventListener('loadedmetadata', this);
+    this._video.addEventListener('playing', this);
+  };
+
+  proto.getVideo = function () {
+    return this._video;
+  };
+
+  /**
+   * @return {Number} The rounded video duration in sec.
+   *                  Please read the video's duration property if
+   *                  require accurate to the decimal place.
+   */
+  proto.getRoundedDuration = function () {
+    var s = Math.round(this._video.duration);
+    return isNaN(s) ? 0 : s;
+  };
+
+  /**
+   * @return {Number} The rounded current video time in sec.
+   *                  Please read the video's currentTime property if
+   *                  require accurate to the decimal place.
+   */
+  proto.getRoundedCurrentTime = function () {
+    var s = Math.round(this._video.currentTime);
+    return isNaN(s) ? 0 : s;
+  };
+
+  proto.show = function () {
+    this._video.hidden = false;
+  };
+
+  proto.hide = function () {
+    this._video.hidden = true;
+  };
+
+  proto.load = function (url) {
+    this._video.src = url;
+    this._video.load();
+  };
+
+  proto.release = function () {
+    this._video.pause();
+    this._video.removeAttribute('src');
+    this._video.load();
+  };
+
+  proto.play = function () {
+    this._video.play();
+  };
+
+  proto.pause = function () {
+    this._video.pause();
+  };
+
+  proto.seek = function (t) {
+    if (!this._isLoaded) {
+      return;
+    }
+    this._video.currentTime = t;
+  };
+
+  proto.isPlaying = function () {
+    return !this._video.paused && !this._video.ended;
+  };
+
+  /**
+   * @param {Number} sec The time length in sec
+   * @return {Object} One object carrys the pared time value:
+   *                  - hh : hour
+   *                  - mm : minute
+   *                  - ss : sec
+   */
+  proto.parseTime = function (sec) {
+
+    var t = {},
+        s = Math.round(sec);
+
+    if ((s > 0) === false) {
+      s = 0;
+    }
+
+    t.ss = s % 3600 % 60;
+    s -= t.ss;
+    t.mm = (s % 3600) / 60;
+    s -= t.mm * 60;
+    t.hh = s / 3600;
+
+    return t;
+  };
+
+  proto.handleEvent = function (evt) {
+
+    switch(evt.type) {
+      case 'loadedmetadata':
+        this._isLoaded = true;
+      break;
+
+      case 'playing':
+        this.show();
+      break;
+    }
+  };
+
+  exports.VideoPlayer = VideoPlayer;
+
+})(window);