0.6.x/js/07_audio/00_XAudio.js

   1 \r
   2 /*\r
   3         WebAudio    : 1,\r
   4         HTMLAudio   : 2,\r
   5         Flash       : 3,\r
   6         Silverlight : 4,\r
   7         Unity       : 5,\r
   8         WMP         : 6,\r
   9         RealPlayer  : 7,\r
  10         QuickTime   : 8,\r
  11  */\r
  12 \r
  13 var X_Audio_BACKENDS     = []; // Array.<Hash>\r
  14 \r
  15 X_TEMP.onSystemReady.push(\r
  16         function(){\r
  17                 var canPlay = X[ 'Audio' ][ 'canPlay' ] = {},\r
  18                         i = X_Audio_BACKENDS.length,\r
  19                         be;\r
  20                 for( ; i; ){\r
  21                         be = X_Audio_BACKENDS[ --i ];\r
  22                         X_Object_override( canPlay, be.canPlay );\r
  23                         X[ 'Audio' ][ be.backendName ] = be.backendID;\r
  24                 };\r
  25         });\r
  26 \r
  27 /**\r
  28  * <p>複数のバックエンドから、与えられた音声を再生可能なものを見つけ、音声を再生します。\r
  29  * <p>HTMLAudio の動作・機能がブラウザ毎にバラバラなのに業を煮やし、メソッドやイベントは独自に定義しています。\r
  30  * <h4>バックエンドの種類</h4>\r
  31  * <p>HTMLAudio, WebAudio, Silverlight\r
  32  * <h4>イベント</h4>\r
  33  * <dl>\r
  34  * <dt>X.Event.BACKEND_READY <dd>音声(src リスト)を再生可能なバックエンドが見つかった。\r
  35  * <dt>X.Event.BACKEND_NONE  <dd>音声を再生可能なバックエンドが見つからなかった。\r
  36  * <dt>X.Event.READY         <dd>再生可能、実際の状態は canplay から loadeddata まで様々、、、\r
  37  * <dt>X.Event.ERROR         <dd><ul>\r
  38  *   <li> 1 : ユーザーによってメディアの取得が中断された\r
  39  *   <li> 2 : ネットワークエラー\r
  40  *   <li> 3 : メディアのデコードエラー\r
  41  *   <li> 4 : メディアがサポートされていない\r
  42  * </ul>\r
  43  * <dt>X.Event.MEDIA_PLAYING <dd>再生中に1秒以下のタイミングで発生．currentTime が取れる?\r
  44  * <dt>X.Event.MEDIA_LOOP    <dd>ループ直前に発生、ｷｬﾝｾﾙ可能\r
  45  * <dt>X.Event.MEDIA_LOOPED  <dd>ループ時に発生\r
  46  * <dt>X.Event.MEDIA_ENDED   <dd>再生位置の(音声の)最後についた\r
  47  * <dt>X.Event.MEDIA_PAUSED  <dd>ポーズした\r
  48  * <dt>X.Event.MEDIA_WAITING <dd>再生中に音声が待機状態に。\r
  49  * <dt>X.Event.MEDIA_SEEKING <dd>シーク中に音声が待機状態に。\r
  50  * </dl>\r
  51  * \r
  52  * @alias X.Audio\r
  53  * @class 各種オーディオ機能をラップしインターフェイスを共通化する。\r
  54  * @constructs Audio\r
  55  * @extends {EventDispatcher}\r
  56  * @param {array|string} sourceList\r
  57  * @param {object=} opt_option\r
  58  * @example //\r
  59  * var audio = X.Audio( [ 'etc/special.mp3', 'etc/special.ogg', 'etc/special.wav' ] )\r
  60                                         .listenOnce( X.Event.READY, onReady );\r
  61  */\r
  62 X[ 'Audio' ] = X_EventDispatcher[ 'inherits' ](\r
  63         'X.Audio',\r
  64         X_Class.POOL_OBJECT,\r
  65         {\r
  66                 /**\r
  67                  * 音声の url。X.Event.BACKEND_READY で設定される。\r
  68                  * @alias Audio.prototype.source\r
  69                  * @type {string}\r
  70                  */\r
  71                 'source'      : '',\r
  72                 /**\r
  73                  * 音声再生バックエンドの名前。X.Event.BACKEND_READY で設定される。\r
  74                  * @alias Audio.prototype.backendName\r
  75                  * @type {string}\r
  76                  */\r
  77                 'backendName' : '',\r
  78                 \r
  79                 'Constructor' : function( sourceList, opt_option ){\r
  80                         X_Audio_startDetectionBackend(\r
  81                                 X_Audio_BACKENDS[ 0 ], this,\r
  82                                 X_Type_isArray( sourceList ) ? X_Array_copy( sourceList ) : [ sourceList ],\r
  83                                 opt_option || {} );\r
  84                         this[ 'listenOnce' ]( [ X_EVENT_BACKEND_READY, X_EVENT_BACKEND_NONE, X_EVENT_KILL_INSTANCE ], X_Audio_handleEvent );\r
  85                 },\r
  86                 \r
  87                 /**\r
  88                  * 再生。開始位置・終了位置、ループの有無、ループ以降の開始位置、ループ以降の終了位置\r
  89                  * @alias Audio.prototype.play\r
  90                  */\r
  91                 'play' : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
  92                         var pair = X_Pair_get( this );\r
  93                         pair && pair.play( startTime, endTime, loop, loopStartTime, loopEndTime );\r
  94                         return this;\r
  95                 },\r
  96                 /**\r
  97                  * シーク\r
  98                  * @alias Audio.prototype.seek\r
  99                  */\r
 100                 'seek' : function( seekTime ){\r
 101                         var pair = X_Pair_get( this );\r
 102                         pair && pair.seek( seekTime );\r
 103                         return this;\r
 104                 },\r
 105                 /**\r
 106                  * ポーズ\r
 107                  * @alias Audio.prototype.pause\r
 108                  */\r
 109                 'pause' : function(){\r
 110                         var pair = X_Pair_get( this );\r
 111                         pair && pair.pause();\r
 112                         return this;\r
 113                 },\r
 114                 /**\r
 115                  * 状態の getter と setter\r
 116                  * @alias Audio.prototype.state\r
 117                  */\r
 118                 'state' : function( obj ){\r
 119                         var pair = X_Pair_get( this );\r
 120                         if( obj === undefined ){\r
 121                                 return pair ? pair.getState() :\r
 122                                         {\r
 123                                         'startTime'     : -1,\r
 124                                         'endTime'       : -1,\r
 125                                         'loopStartTime' : -1,\r
 126                                         'loopEndTime'   : -1,\r
 127                                         'currentTime'   : -1,\r
 128                                         'loop'          : false,\r
 129                                         'looded'        : false,\r
 130                                         'error'         : false,\r
 131                                         'playing'       : false,\r
 132                                         'source'        : this[ 'source' ] || '',\r
 133                                         'duration'      : 0\r
 134                                         };\r
 135                         };\r
 136                         pair && pair.setState( obj );\r
 137                         return this;\r
 138                 },              \r
 139                 /**\r
 140                  * ループの getter と setter\r
 141                  * @alias Audio.prototype.loop\r
 142                  */\r
 143                 'loop' : function( v ){\r
 144                         var pair = X_Pair_get( this );\r
 145                         pair && pair.loop( v );\r
 146                         return this;\r
 147                 },\r
 148                 /**\r
 149                  * ボリュームの getter と setter 実装不十分！\r
 150                  * @alias Audio.prototype.volume\r
 151                  */\r
 152                 'volume' : function( v ){\r
 153                         var pair = X_Pair_get( this );\r
 154                         pair && pair.volume( v );\r
 155                         return this;\r
 156                 },\r
 157                 /**\r
 158                  * 再生位置。\r
 159                  * @alias Audio.prototype.currentTime\r
 160                  */\r
 161                 'currentTime' : function( v ){\r
 162                         var pair = X_Pair_get( this );\r
 163                         pair && pair.currentTime( v );\r
 164                         return this;\r
 165                 },\r
 166                 /**\r
 167                  * 再生中か？\r
 168                  * @alias Audio.prototype.isPlaying\r
 169                  */\r
 170                 'isPlaying' : function(){\r
 171                         var pair = X_Pair_get( this );\r
 172                         return pair && pair.playing;\r
 173                 }\r
 174                 \r
 175         }\r
 176 );\r
 177 \r
 178 function X_Audio_handleEvent( e ){\r
 179         var backend;\r
 180         \r
 181         switch( e.type ){\r
 182                 case X_EVENT_BACKEND_READY :\r
 183                         backend = X_Audio_BACKENDS[ e[ 'backendID' ] ];\r
 184                 \r
 185                         this[ 'unlisten' ]( X_EVENT_BACKEND_NONE, X_Audio_handleEvent );\r
 186                         this[ 'source' ]      = e[ 'source' ];\r
 187                         this[ 'backendName' ] = backend.backendName;\r
 188                         X_Pair_create( this, backend.klass( this, e[ 'source' ], e[ 'option' ] ) );\r
 189                         break;\r
 190                 \r
 191                 case X_EVENT_BACKEND_NONE :\r
 192                         this[ 'kill' ]();\r
 193                         break;\r
 194                 \r
 195                 case X_EVENT_KILL_INSTANCE :\r
 196                         backend = X_Pair_get( this );\r
 197                         backend && backend[ 'kill' ]();\r
 198                         X_Pair_release( this, backend );\r
 199                         break;\r
 200         };\r
 201 };\r
 202 \r
 203 \r
 204 /*\r
 205  * TODO preplayerror play してみたら error が出た、backend の変更。\r
 206  */\r
 207 \r
 208 function X_Audio_startDetectionBackend( backend, xaudio, sourceList, option ){\r
 209         var source = sourceList[ 0 ] || '', \r
 210                 ext    = X_URL_getEXT( source ),\r
 211                 sup;\r
 212         \r
 213         if( source && backend ){\r
 214                 sup      = [ xaudio, sourceList, option, source, ext ];\r
 215                 sup[ 5 ] = sup;\r
 216                 \r
 217                 xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, backend, X_Audio_onEndedDetection, sup );\r
 218                 backend.detect( xaudio, source, ext );\r
 219         } else {\r
 220                 xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 221         };\r
 222 };\r
 223 \r
 224 function X_Audio_onEndedDetection( e, xaudio, sourceList, option, source, ext, sup ){\r
 225         var i = X_Audio_BACKENDS.indexOf( this ), backend;\r
 226         \r
 227         if( e.canPlay ){\r
 228                 xaudio[ 'asyncDispatch' ]( {\r
 229                         type          : X_EVENT_BACKEND_READY,\r
 230                         'option'      : option,\r
 231                         'source'      : source,\r
 232                         'backendName' : this[ 'backendName' ],\r
 233                         'backendID'   : i\r
 234                 } );                    \r
 235         } else {\r
 236                 console.log( 'No ' + source + ' ' + this[ 'backendName' ] );\r
 237                 if( sup[ 3 ] = source = sourceList[ sourceList.indexOf( source ) + 1 ] ){\r
 238                         sup[ 4 ] = ext    = X_URL_getEXT( source );\r
 239                         xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, this, X_Audio_onEndedDetection, sup );\r
 240                         this.detect( xaudio, source, ext );\r
 241                 } else\r
 242                 if( backend = X_Audio_BACKENDS[ i + 1 ] ){\r
 243                         X_Audio_startDetectionBackend( backend, xaudio, sourceList, option );\r
 244                 } else {\r
 245                         xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 246                 };                              \r
 247         };\r
 248 };\r
 249 \r
 250 \r
 251 \r
 252 var X_AudioBase = X_EventDispatcher[ 'inherits' ](\r
 253         'X.AudioBase',\r
 254         X_Class.ABSTRACT,\r
 255         {\r
 256                 disatcher     : null,\r
 257                 \r
 258                 startTime     : 0,    //\r
 259                 endTime       : -1,   //\r
 260                 loopStartTime : -1,\r
 261                 loopEndTime   : -1,\r
 262                 seekTime      : -1,\r
 263                 duration      : 0,    //\r
 264 \r
 265                 playing       : false,\r
 266                 error         : 0,    //                \r
 267                 autoLoop      : false,\r
 268                 looped        : false,\r
 269                 autoplay      : false,//\r
 270                 gain          : 0.5,\r
 271                 \r
 272                 play : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
 273                         if( 0 <= startTime ){\r
 274                                 this.setState( {\r
 275                                         'currentTime'   : startTime,\r
 276                                         'startTime'     : startTime,\r
 277                                         'endTime'       : endTime,\r
 278                                         'loop'          : loop,\r
 279                                         'looped'        : false,\r
 280                                         'loopStartTime' : loopStartTime,\r
 281                                         'loopEndTime'   : loopEndTime\r
 282                                 } );\r
 283                         };\r
 284                         // canPlay() : autoplay = true\r
 285                         this.actualPlay();\r
 286                 },\r
 287                 \r
 288                 seek : function( seekTime ){\r
 289                         if( seekTime < X_Audio_getEndTime( this ) ){\r
 290                                 this.setState( { 'currentTime' : seekTime } );\r
 291                         };\r
 292                 },\r
 293                 \r
 294                 pause : function(){\r
 295                         this.playing && this.actualPause();\r
 296                         // delete this.autoplay\r
 297                         // delete this.playing\r
 298                 },              \r
 299                 \r
 300                 loop : function( v ){\r
 301                         if( v === undefined ){\r
 302                                 return this.autoLoop;\r
 303                         };\r
 304                         this.setState( { 'loop' : v } );\r
 305                 },\r
 306 \r
 307                 volume : function( v ){\r
 308                         if( v === undefined ){\r
 309                                 return this.gain;\r
 310                         };\r
 311                         this.setState( { 'volume' : v } );\r
 312                 },\r
 313 \r
 314                 currentTime : function( v ){\r
 315                         if( v === undefined ){\r
 316                                 return this.playing ? this.getActualCurrentTime() : this.seekTime;\r
 317                         };\r
 318                         this.setState( { 'currentTime' : v } );\r
 319                 },\r
 320                 \r
 321                 getState : function(){\r
 322                         \r
 323                     return {\r
 324                         'startTime'     : this.startTime,\r
 325                         'endTime'       : this.endTime < 0 ? this.duration : this.endTime,\r
 326                         'loopStartTime' : this.loopStartTime < 0 ? this.startTime : this.loopStartTime,\r
 327                         'loopEndTime'   : this.loopEndTime < 0 ? ( this.endTime || this.duration ) : this.loopEndTime,\r
 328                         'loop'          : this.autoLoop,\r
 329                         'looped'        : this.looped,\r
 330                         'volume'        : this.gain,\r
 331                         'playing'       : this.playing,                         \r
 332                         'duration'      : this.duration,\r
 333                         \r
 334                         'currentTime'  : this.playing ? this.getActualCurrentTime() : this.seekTime,\r
 335                         'error'        : this.getActualError ? this.getActualError() : this.error\r
 336                     };\r
 337                 },\r
 338                 \r
 339                 setState : function( obj ){\r
 340                         var playing = this.playing,\r
 341                                 k, v,\r
 342                                 end = 0, seek = 0, volume = 0;\r
 343                         \r
 344                         for( k in obj ){\r
 345                                 v = obj[ k ];\r
 346                                 switch( k ){\r
 347                                         case 'currentTime' :\r
 348                                                 v = X_Audio_timeStringToNumber( v );\r
 349                                                 if( X_Type_isNumber( v ) ){\r
 350                                                         if( playing ){\r
 351                                                                 if( this.getActualCurrentTime() !== v ){\r
 352                                                                         seek = 2;\r
 353                                                                         this.seekTime = v;\r
 354                                                                 };                                                              \r
 355                                                         } else {\r
 356                                                                 this.seekTime = v;\r
 357                                                         };\r
 358                                                 } else {\r
 359                                                         continue;\r
 360                                                 };\r
 361                                                 break;\r
 362                                                         \r
 363                                         case 'startTime'     :\r
 364                                                 v = X_Audio_timeStringToNumber( v );\r
 365                                                 if( v || v === 0 ){\r
 366                                                         if( this.startTime !== v ){\r
 367                                                                 this.startTime = v;                                     \r
 368                                                         };\r
 369                                                 } else {\r
 370                                                         delete this.startTime;\r
 371                                                 };\r
 372                                                 break;\r
 373                                         \r
 374                                         case 'endTime'       :\r
 375                                                 v = X_Audio_timeStringToNumber( v );\r
 376                                                 if( v || v === 0 ){\r
 377                                                         if( this.endTime !== v ){\r
 378                                                                 this.endTime = v;\r
 379                                                                 if( playing ) end = 1;                                          \r
 380                                                         };\r
 381                                                 } else {\r
 382                                                         delete this.endTime;\r
 383                                                         if( playing ) end = 1;\r
 384                                                 };\r
 385                                                 break;\r
 386                                                 \r
 387                                         case 'loopStartTime' :\r
 388                                                 v = X_Audio_timeStringToNumber( v );\r
 389                                                 if( v || v === 0 ){\r
 390                                                         if( this.loopStartTime !== v ){\r
 391                                                                 this.loopStartTime = v;                                 \r
 392                                                         };\r
 393                                                 } else {\r
 394                                                         delete this.loopStartTime;\r
 395                                                 };\r
 396                                                 break;\r
 397                                                 \r
 398                                         case 'loopEndTime'   :\r
 399                                                 v = X_Audio_timeStringToNumber( v );\r
 400                                                 if( v || v === 0 ){\r
 401                                                         if( this.loopEndTime !== v ){\r
 402                                                                 this.loopEndTime = v;\r
 403                                                                 if( playing ) end = 1;                                          \r
 404                                                         };\r
 405                                                 } else {\r
 406                                                         delete this.loopEndTime;\r
 407                                                         if( playing ) end = 1;\r
 408                                                 };\r
 409                                                 break;\r
 410                 \r
 411                                         case 'looped' :\r
 412                                                 if( X_Type_isBoolean( v ) && this.looped !== v ){\r
 413                                                         this.looped = v;\r
 414                                                         if( playing ) seek = 2;\r
 415                                                 };\r
 416                                                 break;\r
 417                                                 \r
 418                                         case 'loop' :\r
 419                                                 if( X_Type_isBoolean( v ) && this.autoLoop !== v ){\r
 420                                                         this.autoLoop = v;\r
 421                                                 };\r
 422                                                 break;\r
 423                                                 \r
 424                                         case 'autoplay' :\r
 425                                                 if( X_Type_isBoolean( v ) && this.autoplay !== v ){\r
 426                                                         this.autoplay = v;\r
 427                                                 };\r
 428                                                 break;\r
 429                 \r
 430                                         case 'volume' :\r
 431                                                 if( X_Type_isNumber( v ) ){\r
 432                                                         v = v < 0 ? 0 : 1 < v ? 1 : v;\r
 433                                                         if( this.gain !== v ){\r
 434                                                                 this.gain = v;\r
 435                                                                 // if playing -> update\r
 436                                                                 if( playing ) volume = 4;\r
 437                                                         };\r
 438                                                 };\r
 439                                                 break;\r
 440                                         case 'useVideo' :\r
 441                                                 break;\r
 442                                         default :\r
 443                                                 throw ( 'bad arg! ' + k );\r
 444                                 };\r
 445                         };\r
 446                         \r
 447                         if( this.endTime < this.startTime ||\r
 448                                 ( this.loopEndTime < 0 ? this.endTime : this.loopEndTime ) < ( this.loopStartTime < 0 ? this.startTime : this.loopStartTime ) ||\r
 449                                 X_Audio_getEndTime( this ) < this.seekTime// ||\r
 450                                 //this.duration < this.endTime\r
 451                         ){\r
 452                                 console.log( 'setState 0:' + this.startTime + ' -> ' + this.endTime + ' looped:' + this.looped + ' 1:' + this.loopStartTime + ' -> ' + this.loopEndTime );\r
 453                                 return;\r
 454                         };\r
 455                         \r
 456                         v = end + seek + volume;\r
 457                         return v && this.playing && this.afterUpdateState( v );\r
 458                 }\r
 459                 \r
 460         }\r
 461 );\r
 462 \r
 463 \r
 464 function X_Audio_timeStringToNumber( time ){\r
 465         var ary, ms, s = 0, m = 0, h = 0;\r
 466         if( X_Type_isNumber( time ) ) return time;\r
 467         if( !X_Type_isString( time ) || !time.length ) return;\r
 468 \r
 469         ary = time.split( '.' );\r
 470         ms  = parseFloat( ( ary[ 1 ] + '000' ).substr( 0, 3 ) ) || 0;\r
 471         \r
 472         ary = ary[ 0 ].split( ':' );\r
 473         if( 3 < ary.length ) return;\r
 474         \r
 475         switch( ary.length ){\r
 476                 case 0 :\r
 477                         break;\r
 478                 case 1 :\r
 479                         s = parseFloat( ary[ 0 ] ) || 0;\r
 480                         break;\r
 481                 case 2 :\r
 482                         m = parseFloat( ary[ 0 ] ) || 0;\r
 483                         s = parseFloat( ary[ 1 ] ) || 0;\r
 484                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 485                         break;\r
 486                 case 3 :\r
 487                         h = parseFloat( ary[ 0 ] ) || 0;\r
 488                         m = parseFloat( ary[ 1 ] ) || 0;\r
 489                         s = parseFloat( ary[ 2 ] ) || 0;\r
 490                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 491                         if( 60 <= m ) alert( 'invalid time string ' + time );\r
 492                         break;\r
 493                 default :\r
 494                         alert( 'invalid time string ' + time );\r
 495         };\r
 496         ms = ( h * 3600 + m * 60 + s ) * 1000 + ms;\r
 497         return ms < 0 ? 0 : ms;\r
 498 };\r
 499 \r
 500 function X_Audio_getStartTime( audioWrapper, endTime, delSeekTime ){\r
 501         var seek = audioWrapper.seekTime;\r
 502         \r
 503         if( delSeekTime ) delete audioWrapper.seekTime;\r
 504         \r
 505         if( 0 <= seek ){\r
 506                 if( audioWrapper.duration <= seek || endTime < seek ) return 0;\r
 507                 return seek;\r
 508         };\r
 509         \r
 510         if( audioWrapper.looped && 0 <= audioWrapper.loopStartTime ){\r
 511                 if( audioWrapper.duration <= audioWrapper.loopStartTime || endTime < audioWrapper.loopStartTime ) return 0;\r
 512                 return audioWrapper.loopStartTime;\r
 513         };\r
 514         \r
 515         if( audioWrapper.startTime < 0 || audioWrapper.duration <= audioWrapper.startTime ) return 0;\r
 516         return audioWrapper.startTime;\r
 517 };\r
 518 \r
 519 function X_Audio_getEndTime( audioWrapper ){\r
 520         var duration = audioWrapper.duration;\r
 521         \r
 522         if( audioWrapper.looped && 0 <= audioWrapper.loopEndTime ){\r
 523                 if( duration <= audioWrapper.loopEndTime ) return duration;\r
 524                 return audioWrapper.loopEndTime;\r
 525         };\r
 526         \r
 527         if( audioWrapper.endTime < 0 || duration <= audioWrapper.endTime ) return duration;\r
 528         return audioWrapper.endTime;\r
 529 };\r
 530 \r