1 | define(['dojo', 'dijit', 'dijit/_Widget', 'dojox/embed/Flash', 'dojox/av/_Media'], |
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2 | function(dojo, dijit, _Widget, Flash, _Media){ |
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3 | |
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4 | dojo.experimental("dojox.av.FLVideo"); |
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5 | |
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6 | return dojo.declare("dojox.av.FLVideo", [_Widget, _Media], { |
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7 | |
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8 | // summary: |
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9 | // Inserts a Flash FLV video into the HTML page and provides methods |
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10 | // and events for controlling the video. Also plays the H264/M4V codec |
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11 | // with a little trickery: change the '.M4V' extension to '.flv'. |
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12 | // example: |
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13 | // markup: |
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14 | // | <div id="vid" initialVolume=".7", |
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15 | // | mediaUrl="../resources/Grog.flv" |
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16 | // | dojoType="dojox.av.FLVideo"></div> |
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17 | // example: |
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18 | // programmatic: |
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19 | // | new dojox.av.FLVideo({ |
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20 | // | initialVolume:.7, |
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21 | // | mediaUrl:"../resources/Grog.flv" |
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22 | // | }, "vid"); |
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23 | |
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24 | // mediaUrl: String |
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25 | // REQUIRED: The Url of the video file that will be played. |
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26 | // NOTE: Must be either an absolute URL or relative to the HTML file. |
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27 | // Relative paths will be converted to absolute paths |
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28 | |
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29 | // _swfPath: Uri |
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30 | // The path to the video player SWF resource |
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31 | _swfPath: dojo.moduleUrl("dojox.av", "resources/video.swf"), |
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32 | |
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33 | constructor: function(/*Object*/options){ |
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34 | // Provide this function for the SWF to ensure that the it is playing |
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35 | // in HTML. |
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36 | dojo.global.swfIsInHTML = function(){ return true; } |
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37 | }, |
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38 | |
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39 | postCreate: function(){ |
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40 | // summary: |
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41 | // Initialize the media. |
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42 | |
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43 | this._subs = []; |
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44 | this._cons = []; |
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45 | this.mediaUrl = this._normalizeUrl(this.mediaUrl); |
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46 | this.initialVolume = this._normalizeVolume(this.initialVolume); |
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47 | |
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48 | var args = { |
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49 | path:this._swfPath, |
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50 | width:"100%", |
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51 | height:"100%", |
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52 | minimumVersion:9, |
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53 | expressInstall:true, |
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54 | params:{ |
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55 | allowFullScreen: this.allowFullScreen, |
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56 | wmode:this.wmode, |
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57 | allowScriptAccess:this.allowScriptAccess, |
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58 | allowNetworking:this.allowNetworking |
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59 | }, |
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60 | // only pass in simple variables - no deep objects |
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61 | vars:{ |
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62 | videoUrl:this.mediaUrl, |
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63 | id:this.id, |
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64 | autoPlay:this.autoPlay, |
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65 | volume:this.initialVolume, |
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66 | isDebug:this.isDebug |
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67 | } |
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68 | }; |
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69 | |
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70 | // Setting up dojo.subscribes that listens to events |
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71 | // from the player |
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72 | this._sub("stageClick", "onClick"); |
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73 | this._sub("stageSized", "onSwfSized"); |
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74 | this._sub("mediaStatus", "onPlayerStatus"); |
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75 | this._sub("mediaMeta", "onMetaData"); |
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76 | this._sub("mediaError", "onError"); |
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77 | this._sub("mediaStart", "onStart"); |
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78 | this._sub("mediaEnd", "onEnd"); |
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79 | |
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80 | this._flashObject = new dojox.embed.Flash(args, this.domNode); |
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81 | this._flashObject.onError = function(err){ |
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82 | console.error("Flash Error:", err); |
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83 | }; |
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84 | this._flashObject.onLoad = dojo.hitch(this, function(mov){ |
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85 | this.flashMedia = mov; |
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86 | this.isPlaying = this.autoPlay; |
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87 | this.isStopped = !this.autoPlay; |
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88 | this.onLoad(this.flashMedia); |
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89 | this._initStatus(); |
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90 | this._update(); |
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91 | }); |
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92 | this.inherited(arguments); |
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93 | }, |
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94 | |
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95 | // ============================= // |
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96 | // Methods to control the player // |
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97 | // ============================= // |
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98 | |
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99 | play: function(/* String? */newUrl){ |
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100 | // summary: |
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101 | // Plays the video. If an url is passed in, plays the new link. |
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102 | this.isPlaying = true; |
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103 | this.isStopped = false; |
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104 | this.flashMedia.doPlay(this._normalizeUrl(newUrl)); |
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105 | }, |
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106 | |
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107 | pause: function(){ |
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108 | // summary: |
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109 | // Pauses the video |
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110 | this.isPlaying = false; |
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111 | this.isStopped = false; |
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112 | if(this.onPaused){ |
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113 | this.onPaused(); |
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114 | } |
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115 | this.flashMedia.pause(); |
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116 | }, |
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117 | |
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118 | seek: function(/* Float */ time ){ |
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119 | // summary: |
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120 | // Goes to the time passed in the argument |
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121 | this.flashMedia.seek(time); |
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122 | }, |
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123 | |
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124 | |
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125 | // ===================== // |
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126 | // Player Getter/Setters // |
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127 | // ===================== // |
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128 | |
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129 | volume: function(/* Float */ vol){ |
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130 | // summary: |
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131 | // Sets the volume of the video to the time in the |
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132 | // vol: |
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133 | // between 0 - 1. |
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134 | if(vol){ |
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135 | if(!this.flashMedia) { |
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136 | this.initialVolume = vol; |
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137 | } |
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138 | this.flashMedia.setVolume(this._normalizeVolume(vol)); |
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139 | } |
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140 | if(!this.flashMedia || !this.flashMedia.doGetVolume) { |
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141 | return this.initialVolume; |
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142 | } |
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143 | return this.flashMedia.getVolume(); // Float |
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144 | }, |
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145 | |
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146 | // ============= // |
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147 | // Player Events // |
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148 | // ============= // |
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149 | |
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150 | /*===== |
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151 | onLoad: function(mov){ |
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152 | // summary: |
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153 | // Fired when the SWF player has loaded |
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154 | // NOT when the video has loaded |
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155 | }, |
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156 | |
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157 | onDownloaded: function(percent){ |
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158 | // summary: |
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159 | // Fires the amount of that the media has been |
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160 | // downloaded. Number, 0-100 |
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161 | }, |
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162 | |
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163 | onClick: function(evt){ |
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164 | // summary: |
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165 | // Fires when the player is clicked |
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166 | // Could be used to toggle play/pause, or |
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167 | // do an external activity, like opening a new |
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168 | // window. |
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169 | }, |
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170 | |
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171 | onSwfSized: function(data){ |
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172 | // summary: |
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173 | // Fired on SWF resize, or when its |
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174 | // toggled between fullscreen. |
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175 | }, |
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176 | |
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177 | onMetaData: function(data, evt){ |
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178 | // summary: |
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179 | // The video properties. Width, height, duration, etc. |
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180 | // |
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181 | // NOTE: if data is empty, this is an older FLV with no meta data. |
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182 | // Duration cannot be determined. In original FLVs, duration |
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183 | // could only be obtained with Flash Media Server. |
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184 | // |
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185 | // NOTE: Older FLVs can still return width and height |
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186 | // and will do so on a second event call |
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187 | }, |
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188 | |
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189 | onPosition: function( time){ |
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190 | // summary: |
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191 | // The position of the playhead in seconds |
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192 | }, |
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193 | |
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194 | onStart: function( data){ |
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195 | // summary: |
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196 | // Fires when video starts |
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197 | // Good for setting the play button to pause |
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198 | // during an autoPlay for example |
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199 | }, |
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200 | |
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201 | onPlay: function(data){ |
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202 | // summary: |
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203 | // Fires when video starts and resumes |
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204 | }, |
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205 | |
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206 | onPause: function(data){ |
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207 | // summary: |
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208 | // Fires when the pause button is clicked |
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209 | }, |
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210 | |
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211 | onEnd: function(data){ |
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212 | // summary: |
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213 | // Fires when video ends |
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214 | // Could be used to change pause button to play |
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215 | // or show a post video graphic, like YouTube |
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216 | }, |
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217 | |
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218 | onStop: function(){ |
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219 | // summary: |
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220 | // Fire when the Stop button is clicked |
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221 | |
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222 | // TODO: This is not hooked up yet and shouldn't |
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223 | // fire. |
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224 | }, |
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225 | |
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226 | onBuffer: function(isBuffering){ |
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227 | // summary: |
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228 | // Fires a boolean to tell if media |
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229 | // is paused for buffering or if buffering |
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230 | // has finished |
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231 | this.isBuffering = isBuffering; |
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232 | }, |
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233 | |
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234 | onError: function(data, url){ |
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235 | // summary: |
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236 | // Fired when the player encounters an error |
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237 | // example: |
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238 | // | console.warn("ERROR-"+data.type.toUpperCase()+":", |
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239 | // | data.info.code, " - URL:", url); |
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240 | }, |
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241 | |
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242 | onStatus: function(data){ |
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243 | // summary: |
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244 | // Simple status |
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245 | }, |
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246 | |
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247 | onPlayerStatus: function(data){ |
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248 | // summary: |
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249 | // The status of the video from the SWF |
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250 | // playing, stopped, bufering, etc. |
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251 | }, |
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252 | |
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253 | onResize: function(){ |
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254 | // summary: |
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255 | // Fired on page resize |
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256 | }, |
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257 | =====*/ |
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258 | |
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259 | // =============== // |
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260 | // Private Methods // |
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261 | // =============== // |
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262 | |
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263 | _checkBuffer: function(/* Float */time, /* Float */bufferLength){ |
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264 | // summary: |
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265 | // Checks that there is a proper buffer time between |
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266 | // current playhead time and the amount of data loaded. |
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267 | // Works only on FLVs with a duration (not older). Pauses |
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268 | // the video while continuing download. |
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269 | |
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270 | if(this.percentDownloaded == 100){ |
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271 | if(this.isBuffering){ |
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272 | this.onBuffer(false); |
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273 | this.flashMedia.doPlay(); |
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274 | } |
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275 | return; |
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276 | } |
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277 | |
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278 | if(!this.isBuffering && bufferLength<.1){ |
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279 | this.onBuffer(true); |
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280 | this.flashMedia.pause(); |
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281 | return; |
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282 | } |
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283 | |
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284 | var timePercentLoad = this.percentDownloaded*.01*this.duration; |
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285 | |
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286 | // check if start buffer needed |
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287 | if(!this.isBuffering && time+this.minBufferTime*.001>timePercentLoad){ |
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288 | this.onBuffer(true); |
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289 | this.flashMedia.pause(); |
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290 | |
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291 | // check if end buffer needed |
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292 | }else if(this.isBuffering && time+this.bufferTime*.001<=timePercentLoad){ |
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293 | this.onBuffer(false); |
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294 | this.flashMedia.doPlay(); |
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295 | } |
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296 | |
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297 | }, |
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298 | _update: function(){ |
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299 | // summary: |
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300 | // Helper function to fire onPosition, check download progress, |
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301 | // and check buffer. |
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302 | var time = Math.min(this.getTime() || 0, this.duration); |
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303 | |
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304 | var dObj = this.flashMedia.getLoaded(); |
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305 | this.percentDownloaded = Math.ceil(dObj.bytesLoaded/dObj.bytesTotal*100); |
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306 | this.onDownloaded(this.percentDownloaded); |
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307 | this.onPosition(time); |
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308 | if(this.duration){ |
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309 | this._checkBuffer(time, dObj.buffer); |
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310 | } |
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311 | // FIXME: need to remove this on destroy |
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312 | this._updateHandle = setTimeout(dojo.hitch(this, "_update"), this.updateTime); |
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313 | }, |
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314 | |
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315 | destroy: function(){ |
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316 | clearTimeout(this._updateHandle); |
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317 | dojo.disconnect(this._positionHandle); |
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318 | this.inherited(arguments); |
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319 | } |
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320 | }); |
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321 | |
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322 | }); |
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