0.6.x/js/07_audio/03_XSilverlightAudio.js

   1 \r
   2 /*\r
   3  * original : uupaa-js SilverlightAudio.js\r
   4  * https://code.google.com/p/uupaa-js/source/browse/trunk/0.8/src/Audio/SilverlightAudio.js?r=568\r
   5  *\r
   6  * Silverlight 4 → 5における不具合の状況\r
   7  *　http://www.slideshare.net/wakabayashiy/silverlight-4-5 \r
   8  * \r
   9  * IE10以降でSilverlightでF5押したらフリーズする不具合と対処\r
  10  * http://katsuyuzu.hatenablog.jp/entry/2014/01/11/003550\r
  11  * \r
  12  * SilverlLight5 ie6&7(ietester,winxp), ie8(winxp) で動作確認。firefox32 では動作しない。(4以下の方がよい？)\r
  13  */\r
  14 \r
  15 var X_Audio_SLAudioWrapper,\r
  16         X_Audio_SLAudio_uid = 0;\r
  17 \r
  18 if( X[ 'Pulgin' ][ 'SilverlightEnabled' ] ){\r
  19         \r
  20         // X.Node.inherits はできない。_rawObject は <object> でなく silverlight\r
  21         X_Audio_SLAudioWrapper = X_Audio_AbstractAudioBackend[ 'inherits' ](\r
  22                 'X.AV.SilverlightAudioWrapper',\r
  23                 X_Class.POOL_OBJECT,\r
  24                 {\r
  25                         '_rawType'      : X_EventDispatcher_EVENT_TARGET_SILVER_LIGHT,\r
  26 \r
  27                 _onload         : '',\r
  28                 _callback       : null,                 \r
  29                 xnodeObject     : null,\r
  30                         _source         : '',\r
  31                         _ended          : true,\r
  32                         _paused         : false,\r
  33                         _lastUserAction : '',\r
  34                         _lastState      : '',\r
  35                         _interval       : 0, // setInterval timer id\r
  36                         \r
  37                         Constructor : function( target, source, option ){\r
  38                                 var xnodeScript;\r
  39                                 \r
  40                                 if( !X_Audio_SLAudio_uid ){\r
  41                                         // source\r
  42                                         //xnodeScript = X_Node_head[ 'create' ]( 'script', { type : 'text/xaml', id : 'silverlightaudio' } );\r
  43                                         //xnodeScript[ '_rawObject' ].innerHTML = '<Canvas xmlns="http://schemas.microsoft.com/client/2007" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"></Canvas>';\r
  44                                         \r
  45                                         // html に以下を書いた                     \r
  46                                         // <script id="silverlightaudio" type="text/xaml"><Canvas xmlns="http://schemas.microsoft.com/client/2007" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"></Canvas></script>\r
  47                                 };\r
  48                                 /*\r
  49                                  *　［Silverlight 2］JavaScriptコードからSilverlightのオブジェクトを利用するには？［C#、VB］\r
  50                                  * http://www.atmarkit.co.jp/fdotnet/dotnettips/902slobjcallfromjs/slobjcallfromjs.html\r
  51                                  * このページのサンプルは sl5+firefox32 環境で動いている。xaml を js から利用する形ではなく、.xap を sl4 以下で作るのがよさそう.\r
  52                                  */\r
  53                                 \r
  54                                 // TODO embed\r
  55                                 this.target      = target || this;\r
  56                                 this._source     = source;\r
  57                                 // X.Audio._slOnload_ は不可\r
  58                         this._onload     = 'XAudioSilverlightOnLoad' + ( ++X_Audio_SLAudio_uid );\r
  59                                 this._callback   = window[ this._onload ] = X_Callback_create( this, this.onSLReady );\r
  60                         this.xnodeObject = X_Node_body\r
  61                                 [ 'create' ]( 'object', {\r
  62                                                 type   : 'application/x-silverlight-2',\r
  63                                                 data   : 'data:application/x-silverlight-2,',\r
  64                                                 width  : 1,\r
  65                                                 height : 1\r
  66                                         })\r
  67                                         [ 'html' ](\r
  68                                             '<param name="background" value="#00000000">' +      // transparent\r
  69                                             '<param name="windowless" value="true">' +\r
  70                                             '<param name="source" value="#silverlightaudio">' +  // XAML ID\r
  71                                             '<param name="onload" value="' + this._onload + '">' // + // bond to global\r
  72                                             //'<param value="2.0.31005.0" name="minRuntimeVersion">' +\r
  73                                             //'<param value="true" name="autoUpgrade">' +\r
  74                                             //'<param name="onerror" value="slerror">' // bond to global\r
  75                                         );\r
  76                                 this.setState( option );\r
  77         \r
  78                                 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE );\r
  79                         },\r
  80                         \r
  81                                 onSLReady : function( sender ){\r
  82                                         if( !this._onload ) return;\r
  83                                         \r
  84                                         window[ this._onload ] = null;\r
  85                                         delete this._onload;\r
  86                                         X_Callback_correct( this._callback );\r
  87                                         delete this._callback;\r
  88         \r
  89                                         sender[ 'children' ][ 'add' ](\r
  90                                                 sender[ 'GetHost' ]()[ 'content' ][ 'CreateFromXaml' ](\r
  91                                                 '<Canvas xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">' +\r
  92                                                         '<MediaElement x:Name="media" Source="' + this._source + '" Volume="' + this.gain + '" AutoPlay="false" />' +\r
  93                                                 '</Canvas>'));\r
  94                         \r
  95                                         this[ '_rawObject' ] = sender[ 'findName' ]( 'media' ); // x:Name='media'\r
  96         \r
  97                                         this[ 'listen' ]( [ 'MediaFailed', 'MediaOpened', 'MediaEnded', 'CurrentStateChanged' ] );\r
  98                                 },\r
  99                         \r
 100                         handleEvent : function( e ){\r
 101                                 var lastState, currentState;\r
 102                                 \r
 103                                 console.log( e.type );\r
 104                                 switch( e.type ){\r
 105                                         \r
 106                                         case 'MediaFailed' :\r
 107                                                 this.error   = 4;\r
 108                                                 this.playing = false;\r
 109                                                 this._ended  = true;\r
 110                                                 this._paused = false;\r
 111                                                 if( this.playing ){\r
 112                                                         //X_Timer_once( 16, this, this.actualPlay );\r
 113                                                 } else {\r
 114                                                         this.target[ 'dispatch' ]( X_EVENT_ERROR ); // open failed\r
 115                                                         this[ 'kill' ]();                                                       \r
 116                                                 };\r
 117                                                 break;\r
 118 \r
 119                                         case 'MediaOpened' :\r
 120                                                 // http://msdn.microsoft.com/ja-jp/library/bb979710(VS.95).aspx\r
 121                                                 this.duration = this[ '_rawObject' ][ 'NaturalDuration' ][ 'Seconds' ] * 1000;\r
 122                                 this.target[ 'asyncDispatch' ]( X_EVENT_READY );\r
 123                                 \r
 124                                 this.autoplay && X_Timer_once( 16, this, this.actualPlay );\r
 125                                                 break;\r
 126 \r
 127                                         case 'MediaEnded' :\r
 128                                                 //console.log( ' > ' +  this.autoLoop + ' error:' + this.error );\r
 129                                                 //this.autoLoop && /* this.playing && */ this.actualPlay();\r
 130                                                 this._ended   = true;\r
 131                                                 break;\r
 132 \r
 133                                         case 'CurrentStateChanged' :\r
 134                                                 lastState        = this._lastState,\r
 135                                                 currentState = this[ '_rawObject' ][ 'CurrentState' ];\r
 136                                 \r
 137                                                 // ignore consecutive events or 'Closed' == 'Error'\r
 138                                                 if( lastState === currentState\r
 139                                                         || ( (lastState === 'Closed' || lastState === 'Error') && ( currentState === 'Closed' || currentState === 'Error') ) ){\r
 140                                                         return;\r
 141                                                 };\r
 142                                                 this._lastState = currentState; // update last state\r
 143                                 \r
 144                                                 console.log( ' > ' + currentState + ' - ' + this._lastUserAction );\r
 145                                 \r
 146                                                 switch( currentState ){\r
 147                                                         case 'Buffering' :\r
 148                                                         case 'Opening' :\r
 149                                                                 switch( this._lastUserAction ){\r
 150                                                                         case 'play' :\r
 151                                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 152                                                                                 break;\r
 153                                                                         case 'seek' :\r
 154                                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_SEEKING );\r
 155                                                                                 break;\r
 156                                                                         case 'pause' :\r
 157                                                                                 break;\r
 158                                                                 };\r
 159                                                                 break;\r
 160 \r
 161                                                         // media.play(none supported file) -> 'Error'\r
 162                                                         // media.play(file not found)     -> 'Closed'\r
 163                                                         // media.load -> 'Error'\r
 164                                                         case 'Error':\r
 165                                                                 this.error   = 4;\r
 166                                                         case 'Closed':\r
 167                                                                 this.error   = this.error || 2;\r
 168                                                                 this.playing = false;\r
 169                                                                 this._ended  = true;\r
 170                                                                 this._paused = false;\r
 171                                                                 this.target[ 'dispatch' ]( X_EVENT_ERROR );\r
 172                                                                 this[ 'kill' ]();\r
 173                                                                 break;\r
 174 \r
 175                                                         // userAction.pause()              -> MediaState('Paused') -> x\r
 176                                                         // userAction.stop()                    -> MediaState('Paused') -> x\r
 177                                                         // userAction.play() + file end -> MediaState('Paused') -> uueventfire('ended')\r
 178                                                         case 'Paused':\r
 179                                                         \r
 180                                                                 this.playing && X_Timer_once( 16, this, this.actualPlay );\r
 181                                                                 //this.playing = false;\r
 182                                                                 \r
 183                                                                 switch( this._lastUserAction ){\r
 184                                                                         case 'play': // play() -> file end -> event('ended')\r
 185                                                                         case 'seek':\r
 186                                                                                 //this.seekTime = 0;\r
 187                                                                                 this._ended   = true;\r
 188                                                                                 this._paused  = false;\r
 189                                                                                 //this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 190                                                                                 //this.setCurrentTime( this.startTime );\r
 191                                                                                 break;\r
 192                                                                         case 'pause':\r
 193                                                                                 this._ended  = false;\r
 194                                                                                 this._paused = true;\r
 195                                                                                 break;\r
 196                                                                         case 'stop':\r
 197                                                                                 this._ended  = true;\r
 198                                                                                 this._paused = false;\r
 199                                                                 };\r
 200                                                                 break;\r
 201 \r
 202                                                         // media.play -> 'Playing'\r
 203                                                         case 'Playing':\r
 204                                                                 this.error   = 0;\r
 205                                                                 //this.playing = true;\r
 206                                                                 this._ended  = false;\r
 207                                                                 this._paused = false;\r
 208                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );\r
 209                                                                 break;\r
 210 \r
 211                                                         // stop()\r
 212                                                         case 'Stopped':\r
 213                                                                 this.playing && X_Timer_once( 16, this, this.actualPlay );\r
 214                                                                 return;\r
 215                                                                 \r
 216                                                                 //this.playing = false;\r
 217                                                                 this._ended  = true;\r
 218                                                                 this._paused = false;\r
 219                                                                 //this.setCurrentTime( this.startTime );\r
 220                                                                 break;\r
 221                                                 };\r
 222                                                 break;\r
 223 \r
 224                                         case X_EVENT_KILL_INSTANCE :\r
 225                                                 this.playing && this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 226                                                 this.playing && this.actualPause();\r
 227                                         \r
 228                                                 if( this._onload ){\r
 229                                                         // window への delete に ie5 は対応しないが、そもそも ie5 は Silverlight に非対応\r
 230                                                         window[ this._onload ] = null;\r
 231                                                         delete this._onload;\r
 232                                                         X_Callback_correct( this._callback );\r
 233                                                 };\r
 234                                                 this.xnodeObject[ 'kill' ]();\r
 235                                                 break;\r
 236                                 };\r
 237                         },\r
 238                         \r
 239                         // SilverlightAudio.play\r
 240                         actualPlay : function(){\r
 241                                 var begin, offset, end;\r
 242 \r
 243                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 244                                 if( this.error ) return;\r
 245                                 if( !this.duration ){\r
 246                                         this.autoplay = true;\r
 247                                         return;\r
 248                                 };\r
 249                                 \r
 250                                 this._lastUserAction = 0 <= this.seekTime ? 'seek' : 'play';\r
 251                                 \r
 252                                 end   = X_AudioWrapper_getEndTime( this );\r
 253                                 begin = X_AudioWrapper_getStartTime( this, end, true ) | 0;\r
 254 \r
 255                                 // 1 秒以下は指定できないため四捨五入\r
 256                                 begin = ( begin / 1000 | 0 ) * 1000 + ( 500 < begin % 1000 ? 1000 : 0 ); \r
 257 \r
 258                             this[ '_rawObject' ][ 'Volume' ] = this.gain;\r
 259                             \r
 260                             this.setCurrentTime( this._beginTime = begin );\r
 261                             \r
 262                             console.log( '[play] ' + begin + ' -> ' + end );\r
 263                             \r
 264                             /*\r
 265                             if( offset = begin - this.getActualCurrentTime() ){\r
 266                                 this.setCurrentTime( begin + offset );\r
 267                                 console.log( ' [差補正] ' + offset + ' ct:' + this.getActualCurrentTime() + ' begin:' + begin  );\r
 268                                 this._beginTime = begin = this.getActualCurrentTime();\r
 269                             };*/\r
 270                             \r
 271                             if( !this.playing || this._ended ){\r
 272                                 console.log( '[play] play()' + begin + ' -> ' + end );\r
 273                                     this[ '_rawObject' ].play();\r
 274                             this.playing = true;\r
 275                             this._ended  = false;\r
 276                             };\r
 277                     \r
 278                     this._timerID && X_Timer_remove( this._timerID );\r
 279                     \r
 280                 this._timerID = X_Timer_once( end - begin, this, this._onEnded );\r
 281                 \r
 282                                 if( !this._interval ){\r
 283                                         this._interval = X_Timer_add( 1000, 0, this, this._onInterval );\r
 284                                 };\r
 285                         },\r
 286                                 \r
 287                                 _onInterval : function(){\r
 288                                         if( !this.playing ){\r
 289                                                 delete this._interval;\r
 290                                                 return X_Callback_UN_LISTEN;\r
 291                                         };\r
 292                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );\r
 293                                 },\r
 294                                 \r
 295                                 _onEnded : function(){\r
 296                                         var time, end;\r
 297                                         delete this._timerID;\r
 298                                         \r
 299                             if( this.playing ){\r
 300                                 //console.log( '> end ' + X_AudioWrapper_getEndTime( this ) + ' current:' + ( this.getActualCurrentTime() ) );\r
 301                                 time = this.getActualCurrentTime();\r
 302                                 \r
 303                                 if( time < this._beginTime ){\r
 304                                         console.log( '== waiting ' + time + ' < begin:' + this._beginTime );\r
 305                                         this.setCurrentTime( this._beginTime );\r
 306                                         time = this.getActualCurrentTime();\r
 307                                         console.log( '    > ' + time );\r
 308                                         this._ended && this[ '_rawObject' ].play();\r
 309                                         this._ended = false;\r
 310                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 311                                         this._timerID = X_Timer_once( X_AudioWrapper_getEndTime( this ) - time, this, this._onEnded );\r
 312                                         return;\r
 313                                 };\r
 314                                 \r
 315                                 time -= X_AudioWrapper_getEndTime( this );\r
 316                                 if( time < 0 ){\r
 317                                         console.log( ' > まだ終わらない ' + time );\r
 318                                         this._ended && this[ '_rawObject' ].play();\r
 319                                         this._ended = false;\r
 320                                         this._timerID = X_Timer_once( -time, this, this._onEnded );\r
 321                                         return;\r
 322                                 };\r
 323                                 \r
 324                                 if( this.autoLoop ){\r
 325                                         console.log( '========= loop?' );\r
 326                                         if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){\r
 327                                                 console.log( '========== loopした' );\r
 328                                                 this.looped = true;\r
 329                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 330                                                 this.actualPlay();\r
 331                                         };\r
 332                                 } else {\r
 333                                         console.log( '========= pause' );\r
 334                                         this.actualPause();\r
 335                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 336                                 };\r
 337                             };\r
 338                                 },\r
 339                         \r
 340                         // SilverlightAudio.pause\r
 341                         actualPause : function(){\r
 342                                 if( this.error || !this.playing ) return;\r
 343                                 \r
 344                                 this._lastUserAction = 'pause';\r
 345                                 this.seekTime = this.getActualCurrentTime();\r
 346                                 this.playing  = false;\r
 347                                 this._paused  = true;\r
 348                                 this._ended   = false;\r
 349                                 \r
 350                                 this[ '_rawObject' ].pause();\r
 351                                 //this.target[ 'dispatch' ]( 'pause' );\r
 352                         },\r
 353 \r
 354                         getActualCurrentTime : function(){\r
 355                                 return this[ '_rawObject' ][ 'Position' ][ 'Seconds' ] * 1000 | 0;\r
 356                         },\r
 357                         \r
 358                         afterUpdateState : function( result ){\r
 359                                 if( result & 3 ){ // seek\r
 360                         this.actualPlay();\r
 361                                 } else\r
 362                                 if( result & 1 ){\r
 363                                         end     = X_AudioWrapper_getEndTime( this );\r
 364                                         halfway = end < this.duration;\r
 365                                         this._timerID && X_Timer_remove( this._timerID );\r
 366                                         \r
 367                                         if( halfway ){\r
 368                                                 this._timerID = X_Timer_once( end - this.getActualCurrentTime(), this, this._onEnded );\r
 369                                         } else {\r
 370                                                 delete this._timerID;\r
 371                                         };\r
 372                                 } else\r
 373                                 if( result & 4 ){\r
 374                        this[ '_rawObject' ][ 'Volume' ] = this.gain;\r
 375                                 };                      \r
 376                         },\r
 377                         \r
 378                                 // SilverlightAudio.currentTime\r
 379                                 setCurrentTime : function( time ){ // @param Number: time\r
 380                                         var position = this[ '_rawObject' ][ 'Position' ]; // [!] create instance\r
 381         \r
 382                                         position[ 'Seconds' ] = time / 1000 | 0; // set current time\r
 383                                 \r
 384                                         this[ '_rawObject' ][ 'Position' ] = position; // [!] reattach instance\r
 385                                 }\r
 386 \r
 387                 }\r
 388         );\r
 389 \r
 390         function slerror(){\r
 391                 alert( 'slerror' );\r
 392         };\r
 393 \r
 394         X_Audio_BACKENDS.push( {\r
 395                 backendName : 'Silverlight Audio',\r
 396 \r
 397                 detect : function( proxy, source, ext ){\r
 398                         var ok = ext === 'mp3' || ext === 'wma' || ext === 'wav';\r
 399                         proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : ok } );                          \r
 400                 },\r
 401                 \r
 402                 klass : X_Audio_SLAudioWrapper\r
 403                 \r
 404         } );\r
 405 \r
 406 };