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                         X_ViewPort[ 'listenOnce' ]( X_EVENT_UNLOAD, this, X_AudioSprite_handleEvent );\r
  86                 },\r
  87                 \r
  88                 /**\r
  89                  * 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
  90                  * @alias Audio.prototype.play\r
  91                  */\r
  92                 'play' : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
  93                         var pair = X_Pair_get( this );\r
  94                         pair && pair.play( startTime, endTime, loop, loopStartTime, loopEndTime );\r
  95                         return this;\r
  96                 },\r
  97                 /**\r
  98                  * シーク\r
  99                  * @alias Audio.prototype.seek\r
 100                  */\r
 101                 'seek' : function( seekTime ){\r
 102                         var pair = X_Pair_get( this );\r
 103                         pair && pair.seek( seekTime );\r
 104                         return this;\r
 105                 },\r
 106                 /**\r
 107                  * ポーズ\r
 108                  * @alias Audio.prototype.pause\r
 109                  */\r
 110                 'pause' : function(){\r
 111                         var pair = X_Pair_get( this );\r
 112                         pair && pair.pause();\r
 113                         return this;\r
 114                 },\r
 115                 /**\r
 116                  * 状態の getter と setter\r
 117                  * @alias Audio.prototype.state\r
 118                  */\r
 119                 'state' : function( obj ){\r
 120                         var pair = X_Pair_get( this );\r
 121                         if( obj === undefined ){\r
 122                                 return pair ? pair.getState() :\r
 123                                         {\r
 124                                         'startTime'     : -1,\r
 125                                         'endTime'       : -1,\r
 126                                         'loopStartTime' : -1,\r
 127                                         'loopEndTime'   : -1,\r
 128                                         'currentTime'   : -1,\r
 129                                         'loop'          : false,\r
 130                                         'looded'        : false,\r
 131                                         'error'         : false,\r
 132                                         'playing'       : false,\r
 133                                         'source'        : this[ 'source' ] || '',\r
 134                                         'duration'      : 0\r
 135                                         };\r
 136                         };\r
 137                         pair && pair.setState( obj );\r
 138                         return this;\r
 139                 },              \r
 140                 /**\r
 141                  * ループの getter と setter\r
 142                  * @alias Audio.prototype.loop\r
 143                  */\r
 144                 'loop' : function( v ){\r
 145                         var pair = X_Pair_get( this );\r
 146                         pair && pair.loop( v );\r
 147                         return this;\r
 148                 },\r
 149                 /**\r
 150                  * ボリュームの getter と setter 実装不十分！\r
 151                  * @alias Audio.prototype.volume\r
 152                  */\r
 153                 'volume' : function( v ){\r
 154                         var pair = X_Pair_get( this );\r
 155                         pair && pair.volume( v );\r
 156                         return this;\r
 157                 },\r
 158                 /**\r
 159                  * 再生位置。\r
 160                  * @alias Audio.prototype.currentTime\r
 161                  */\r
 162                 'currentTime' : function( v ){\r
 163                         var pair = X_Pair_get( this );\r
 164                         pair && pair.currentTime( v );\r
 165                         return this;\r
 166                 },\r
 167                 /**\r
 168                  * 再生中か？\r
 169                  * @alias Audio.prototype.isPlaying\r
 170                  */\r
 171                 'isPlaying' : function(){\r
 172                         var pair = X_Pair_get( this );\r
 173                         return pair && pair.playing;\r
 174                 }\r
 175                 \r
 176         }\r
 177 );\r
 178 \r
 179 function X_Audio_handleEvent( e ){\r
 180         var backend, pair;\r
 181         \r
 182         switch( e.type ){\r
 183                 case X_EVENT_BACKEND_READY :\r
 184                         backend = X_Audio_BACKENDS[ e[ 'backendID' ] ];\r
 185                 \r
 186                         this[ 'unlisten' ]( X_EVENT_BACKEND_NONE, X_Audio_handleEvent );\r
 187                         this[ 'source' ]      = e[ 'source' ];\r
 188                         this[ 'backendName' ] = backend.backendName;\r
 189                         \r
 190                         X_Pair_create( this, backend.klass( this, e[ 'source' ], e[ 'option' ] ) );\r
 191                         this[ 'listenOnce' ]( X_EVENT_READY, X_Audio_handleEvent );\r
 192                         break;\r
 193                 \r
 194                 case X_EVENT_READY :\r
 195                         pair = X_Pair_get( this );\r
 196                         ( pair.autoplay || pair._playReserved ) && pair.actualPlay();\r
 197                         delete pair._playReserved;\r
 198                         break;\r
 199                 \r
 200                 case X_EVENT_BACKEND_NONE :\r
 201                 case X_EVENT_UNLOAD :\r
 202                         this[ 'kill' ]();\r
 203                         break;\r
 204                 \r
 205                 case X_EVENT_KILL_INSTANCE :\r
 206                         X_ViewPort[ 'unlisten' ]( X_EVENT_UNLOAD, this, X_AudioSprite_handleEvent );\r
 207                         if( backend = X_Pair_get( this ) ){\r
 208                                 backend[ 'kill' ]();\r
 209                                 X_Pair_release( this, backend );\r
 210                         };\r
 211                         break;\r
 212         };\r
 213 };\r
 214 \r
 215 \r
 216 /*\r
 217  * TODO preplayerror play してみたら error が出た、backend の変更。\r
 218  */\r
 219 \r
 220 function X_Audio_startDetectionBackend( backend, xaudio, sourceList, option ){\r
 221         var source = sourceList[ 0 ] || '', \r
 222                 ext    = X_URL_getEXT( source ),\r
 223                 sup;\r
 224         \r
 225         if( source && backend ){\r
 226                 sup      = [ xaudio, sourceList, option, source, ext ];\r
 227                 sup[ 5 ] = sup;\r
 228                 \r
 229                 xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, backend, X_Audio_onEndedDetection, sup );\r
 230                 backend.detect( xaudio, source, ext );\r
 231         } else {\r
 232                 xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 233         };\r
 234 };\r
 235 \r
 236 function X_Audio_onEndedDetection( e, xaudio, sourceList, option, source, ext, sup ){\r
 237         var i = X_Audio_BACKENDS.indexOf( this ), backend;\r
 238         \r
 239         if( e.canPlay ){\r
 240                 xaudio[ 'asyncDispatch' ]( {\r
 241                         type          : X_EVENT_BACKEND_READY,\r
 242                         'option'      : option,\r
 243                         'source'      : source,\r
 244                         'backendName' : this[ 'backendName' ],\r
 245                         'backendID'   : i\r
 246                 } );                    \r
 247         } else {\r
 248                 console.log( 'No ' + source + ' ' + this[ 'backendName' ] );\r
 249                 if( sup[ 3 ] = source = sourceList[ sourceList.indexOf( source ) + 1 ] ){\r
 250                         sup[ 4 ] = ext    = X_URL_getEXT( source );\r
 251                         xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, this, X_Audio_onEndedDetection, sup );\r
 252                         this.detect( xaudio, source, ext );\r
 253                 } else\r
 254                 if( backend = X_Audio_BACKENDS[ i + 1 ] ){\r
 255                         X_Audio_startDetectionBackend( backend, xaudio, sourceList, option );\r
 256                 } else {\r
 257                         xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 258                 };                              \r
 259         };\r
 260 };\r
 261 \r
 262 \r
 263 \r
 264 var X_AudioBase = X_EventDispatcher[ 'inherits' ](\r
 265         'X.AudioBase',\r
 266         X_Class.ABSTRACT,\r
 267         {\r
 268                 disatcher     : null,\r
 269                 \r
 270                 startTime     : 0,    // state_startTime\r
 271                 endTime       : -1,   // state_startTime\r
 272                 loopStartTime : -1,\r
 273                 loopEndTime   : -1,\r
 274                 seekTime      : -1,\r
 275                 duration      : 0,    //\r
 276 \r
 277                 playing       : false,\r
 278                 error         : 0,    //                \r
 279                 autoLoop      : false,\r
 280                 looped        : false,\r
 281                 autoplay      : false,//\r
 282                 gain          : 0.5,\r
 283                 \r
 284                 _playReserved : false,\r
 285                 \r
 286                 play : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
 287                         if( 0 <= startTime ){\r
 288                                 this.setState( {\r
 289                                         'currentTime'   : startTime,\r
 290                                         'startTime'     : startTime,\r
 291                                         'endTime'       : endTime,\r
 292                                         'loop'          : loop,\r
 293                                         'looped'        : false,\r
 294                                         'loopStartTime' : loopStartTime,\r
 295                                         'loopEndTime'   : loopEndTime\r
 296                                 } );\r
 297                         };\r
 298                         // canPlay() : autoplay = true\r
 299                         this.actualPlay();\r
 300                 },\r
 301                 \r
 302                 seek : function( seekTime ){\r
 303                         if( seekTime < X_Audio_getEndTime( this ) ){\r
 304                                 this.setState( { 'currentTime' : seekTime } );\r
 305                         };\r
 306                 },\r
 307                 \r
 308                 pause : function(){\r
 309                         this.seekTime = this.getActualCurrentTime();\r
 310                         this.playing && this.actualPause();\r
 311                         // delete this.autoplay\r
 312                         // delete this.playing\r
 313                 },              \r
 314                 \r
 315                 loop : function( v ){\r
 316                         if( v === undefined ){\r
 317                                 return this.autoLoop;\r
 318                         };\r
 319                         this.setState( { 'loop' : v } );\r
 320                 },\r
 321 \r
 322                 volume : function( v ){\r
 323                         if( v === undefined ){\r
 324                                 return this.gain;\r
 325                         };\r
 326                         this.setState( { 'volume' : v } );\r
 327                 },\r
 328 \r
 329                 currentTime : function( v ){\r
 330                         if( v === undefined ){\r
 331                                 return this.playing ? this.getActualCurrentTime() : this.seekTime;\r
 332                         };\r
 333                         this.setState( { 'currentTime' : v } );\r
 334                 },\r
 335                 \r
 336                 getState : function(){\r
 337                         \r
 338                     return {\r
 339                         'startTime'     : this.startTime,\r
 340                         'endTime'       : this.endTime < 0 ? this.duration : this.endTime,\r
 341                         'loopStartTime' : this.loopStartTime < 0 ? this.startTime : this.loopStartTime,\r
 342                         'loopEndTime'   : this.loopEndTime < 0 ? ( this.endTime || this.duration ) : this.loopEndTime,\r
 343                         'loop'          : this.autoLoop,\r
 344                         'looped'        : this.looped,\r
 345                         'volume'        : this.gain,\r
 346                         'playing'       : this.playing,                         \r
 347                         'duration'      : this.duration,\r
 348                         \r
 349                         'currentTime'  : this.playing ? this.getActualCurrentTime() : this.seekTime,\r
 350                         'error'        : this.getActualError ? this.getActualError() : this.error\r
 351                     };\r
 352                 },\r
 353                 \r
 354                 setState : function( obj ){\r
 355                         var playing = this.playing,\r
 356                                 k, v,\r
 357                                 end = 0, seek = 0, volume = 0;\r
 358                         \r
 359                         for( k in obj ){\r
 360                                 v = obj[ k ];\r
 361                                 switch( k ){\r
 362                                         case 'currentTime'   :\r
 363                                                 v = X_Audio_timeStringToNumber( v );\r
 364                                                 if( X_Type_isNumber( v ) ){\r
 365                                                         if( playing ){\r
 366                                                                 if( this.getActualCurrentTime() !== v ){\r
 367                                                                         seek = 2;\r
 368                                                                         this.seekTime = v;\r
 369                                                                 };                                                              \r
 370                                                         } else {\r
 371                                                                 this.seekTime = v;\r
 372                                                         };\r
 373                                                 } else {\r
 374                                                         continue;\r
 375                                                 };\r
 376                                                 break;\r
 377                                                         \r
 378                                         case 'startTime'     :\r
 379                                                 v = X_Audio_timeStringToNumber( v );\r
 380                                                 if( v || v === 0 ){\r
 381                                                         if( this.startTime !== v ){\r
 382                                                                 this.startTime = v;                                     \r
 383                                                         };\r
 384                                                 } else {\r
 385                                                         delete this.startTime;\r
 386                                                 };\r
 387                                                 break;\r
 388                                         \r
 389                                         case 'endTime'       :\r
 390                                                 v = X_Audio_timeStringToNumber( v );\r
 391                                                 if( v || v === 0 ){\r
 392                                                         if( this.endTime !== v ){\r
 393                                                                 this.endTime = v;\r
 394                                                                 if( playing ) end = 1;                                          \r
 395                                                         };\r
 396                                                 } else {\r
 397                                                         delete this.endTime;\r
 398                                                         if( playing ) end = 1;\r
 399                                                 };\r
 400                                                 break;\r
 401                                                 \r
 402                                         case 'loopStartTime' :\r
 403                                                 v = X_Audio_timeStringToNumber( v );\r
 404                                                 if( v || v === 0 ){\r
 405                                                         if( this.loopStartTime !== v ){\r
 406                                                                 this.loopStartTime = v;                                 \r
 407                                                         };\r
 408                                                 } else {\r
 409                                                         delete this.loopStartTime;\r
 410                                                 };\r
 411                                                 break;\r
 412                                                 \r
 413                                         case 'loopEndTime'   :\r
 414                                                 v = X_Audio_timeStringToNumber( v );\r
 415                                                 if( v || v === 0 ){\r
 416                                                         if( this.loopEndTime !== v ){\r
 417                                                                 this.loopEndTime = v;\r
 418                                                                 if( playing ) end = 1;                                          \r
 419                                                         };\r
 420                                                 } else {\r
 421                                                         delete this.loopEndTime;\r
 422                                                         if( playing ) end = 1;\r
 423                                                 };\r
 424                                                 break;\r
 425                 \r
 426                                         case 'looped' :\r
 427                                                 if( X_Type_isBoolean( v ) && this.looped !== v ){\r
 428                                                         this.looped = v;\r
 429                                                         if( playing ) seek = 2;\r
 430                                                 };\r
 431                                                 break;\r
 432                                                 \r
 433                                         case 'loop' :\r
 434                                                 if( X_Type_isBoolean( v ) && this.autoLoop !== v ){\r
 435                                                         this.autoLoop = v;\r
 436                                                 };\r
 437                                                 break;\r
 438                                                 \r
 439                                         case 'autoplay' :\r
 440                                                 if( X_Type_isBoolean( v ) && this.autoplay !== v ){\r
 441                                                         this.autoplay = v;\r
 442                                                 };\r
 443                                                 break;\r
 444                 \r
 445                                         case 'volume' :\r
 446                                                 if( X_Type_isNumber( v ) ){\r
 447                                                         v = v < 0 ? 0 : 1 < v ? 1 : v;\r
 448                                                         if( this.gain !== v ){\r
 449                                                                 this.gain = v;\r
 450                                                                 // if playing -> update\r
 451                                                                 if( playing ) volume = 4;\r
 452                                                         };\r
 453                                                 };\r
 454                                                 break;\r
 455                                         case 'useVideo' :\r
 456                                                 break;\r
 457                                         default :\r
 458                                                 alert( 'bad arg! ' + k );\r
 459                                 };\r
 460                         };\r
 461                         \r
 462                         if( this.endTime < this.startTime ||\r
 463                                 ( this.loopEndTime < 0 ? this.endTime : this.loopEndTime ) < ( this.loopStartTime < 0 ? this.startTime : this.loopStartTime ) ||\r
 464                                 X_Audio_getEndTime( this ) < this.seekTime// ||\r
 465                                 //this.duration < this.endTime\r
 466                         ){\r
 467                                 console.log( 'setState 0:' + this.startTime + ' -> ' + this.endTime + ' looped:' + this.looped + ' 1:' + this.loopStartTime + ' -> ' + this.loopEndTime );\r
 468                                 return;\r
 469                         };\r
 470                         \r
 471                         v = end + seek + volume;\r
 472                         return v && this.playing && this.afterUpdateState( v );\r
 473                 }\r
 474                 \r
 475         }\r
 476 );\r
 477 \r
 478 \r
 479 function X_Audio_timeStringToNumber( time ){\r
 480         var ary, ms, s = 0, m = 0, h = 0;\r
 481 \r
 482         if( X_Type_isNumber( time ) ) return time;\r
 483         if( !X_Type_isString( time ) || !time.length ) return;\r
 484 \r
 485         ary = time.split( '.' );\r
 486         ms  = parseFloat( ( ary[ 1 ] + '000' ).substr( 0, 3 ) ) || 0;\r
 487         \r
 488         ary = ary[ 0 ].split( ':' );\r
 489         if( 3 < ary.length ) return;\r
 490         \r
 491         switch( ary.length ){\r
 492                 case 0 :\r
 493                         break;\r
 494                 case 1 :\r
 495                         s = parseFloat( ary[ 0 ] ) || 0;\r
 496                         break;\r
 497                 case 2 :\r
 498                         m = parseFloat( ary[ 0 ] ) || 0;\r
 499                         s = parseFloat( ary[ 1 ] ) || 0;\r
 500                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 501                         break;\r
 502                 case 3 :\r
 503                         h = parseFloat( ary[ 0 ] ) || 0;\r
 504                         m = parseFloat( ary[ 1 ] ) || 0;\r
 505                         s = parseFloat( ary[ 2 ] ) || 0;\r
 506                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 507                         if( 60 <= m ) alert( 'invalid time string ' + time );\r
 508                         break;\r
 509                 default :\r
 510                         alert( 'invalid time string ' + time );\r
 511         };\r
 512         ms = ( h * 3600 + m * 60 + s ) * 1000 + ms;\r
 513         return ms < 0 ? 0 : ms;\r
 514 };\r
 515 \r
 516 function X_Audio_getStartTime( audioBase, endTime, delSeekTime ){\r
 517         var seek = audioBase.seekTime;\r
 518         \r
 519         if( delSeekTime ) delete audioBase.seekTime;\r
 520         \r
 521         if( 0 <= seek ){\r
 522                 if( audioBase.duration <= seek || endTime < seek ) return 0;\r
 523                 return seek;\r
 524         };\r
 525         \r
 526         if( audioBase.looped && 0 <= audioBase.loopStartTime ){\r
 527                 if( audioBase.duration <= audioBase.loopStartTime || endTime < audioBase.loopStartTime ) return 0;\r
 528                 return audioBase.loopStartTime;\r
 529         };\r
 530         \r
 531         if( audioBase.startTime < 0 || audioBase.duration <= audioBase.startTime ) return 0;\r
 532         return audioBase.startTime;\r
 533 };\r
 534 \r
 535 function X_Audio_getEndTime( audioBase ){\r
 536         var duration = audioBase.duration;\r
 537         \r
 538         if( audioBase.looped && 0 <= audioBase.loopEndTime ){\r
 539                 if( duration <= audioBase.loopEndTime ) return duration;\r
 540                 return audioBase.loopEndTime;\r
 541         };\r
 542         \r
 543         if( audioBase.endTime < 0 || duration <= audioBase.endTime ) return duration;\r
 544         return audioBase.endTime;\r
 545 };\r
 546 \r