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

   1 \r
   2 /*\r
   3         WebAudio    : 1,\r
   4         HTML5       : 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 /**\r
  16  * <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
  17  * <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
  18  * <h4>バックエンドの種類</h4>\r
  19  * <p>HTMLAudio, WebAudio, Silverlight\r
  20  * <h4>イベント</h4>\r
  21  * <dl>\r
  22  * <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
  23  * <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
  24  * <dt>X.Event.READY         <dd>再生可能、実際の状態は canplay から loadeddata まで様々、、、\r
  25  * <dt>X.Event.ERROR         <dd><ul>\r
  26  *   <li> 1 : ユーザーによってメディアの取得が中断された\r
  27  *   <li> 2 : ネットワークエラー\r
  28  *   <li> 3 : メディアのデコードエラー\r
  29  *   <li> 4 : メディアがサポートされていない\r
  30  * </ul>\r
  31  * <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
  32  * <dt>X.Event.MEDIA_LOOP    <dd>ループ直前に発生、ｷｬﾝｾﾙ可能\r
  33  * <dt>X.Event.MEDIA_LOOPED  <dd>ループ時に発生\r
  34  * <dt>X.Event.MEDIA_ENDED   <dd>再生位置の(音声の)最後についた\r
  35  * <dt>X.Event.MEDIA_PAUSED  <dd>ポーズした\r
  36  * <dt>X.Event.MEDIA_WAITING <dd>再生中に音声が待機状態に。間もなく X.Event.MEDIA_PLAYING に移行。\r
  37  * <dt>X.Event.MEDIA_SEEKING <dd>シーク中に音声が待機状態に。間もなく X.Event.MEDIA_PLAYING に移行。\r
  38  * </dl>\r
  39  * \r
  40  * @alias X.Audio\r
  41  * @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
  42  * @constructs Audio\r
  43  * @extends {EventDispatcher}\r
  44  * @param {array|string} sourceList\r
  45  * @param {object=} opt_option\r
  46  * @example //\r
  47  * var audio = X.Audio( [ 'etc/special.mp3', 'etc/special.ogg', 'etc/special.wav' ] )\r
  48                                         .listenOnce( X.Event.READY, onReady );\r
  49  */\r
  50 X[ 'Audio' ] = X_EventDispatcher[ 'inherits' ](\r
  51         'X.Audio',\r
  52         X_Class.POOL_OBJECT,\r
  53         {\r
  54                 /**\r
  55                  * 音声の url。X.Event.BACKEND_READY で設定される。\r
  56                  * @alias Audio.prototype.source\r
  57                  * @type {string}\r
  58                  */\r
  59                 'source'      : '',\r
  60                 /**\r
  61                  * 音声再生バックエンドの名前。X.Event.BACKEND_READY で設定される。\r
  62                  * @alias Audio.prototype.backendName\r
  63                  * @type {string}\r
  64                  */\r
  65                 'backendName' : '',\r
  66                 \r
  67                 'Constructor' : function( sourceList, opt_option ){\r
  68                         X_Audio_startDetectionBackend(\r
  69                                 X_Audio_BACKENDS[ 0 ], this,\r
  70                                 X_Type_isArray( sourceList ) ? X_Object_cloneArray( sourceList ) : [ sourceList ],\r
  71                                 opt_option || {} );\r
  72                         this[ 'listenOnce' ]( [ X_EVENT_BACKEND_READY, X_EVENT_BACKEND_NONE, X_EVENT_KILL_INSTANCE ], X_Audio_handleEvent );\r
  73                 },\r
  74                 \r
  75                 /**\r
  76                  * 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
  77                  * @alias Audio.prototype.play\r
  78                  */\r
  79                 'play' : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
  80                         var pair = X_Pair_get( this );\r
  81                         pair && pair.play( startTime, endTime, loop, loopStartTime, loopEndTime );\r
  82                         return this;\r
  83                 },\r
  84                 /**\r
  85                  * シーク\r
  86                  * @alias Audio.prototype.seek\r
  87                  */\r
  88                 'seek' : function( seekTime ){\r
  89                         var pair = X_Pair_get( this );\r
  90                         pair && pair.seek( seekTime );\r
  91                         return this;\r
  92                 },\r
  93                 /**\r
  94                  * ポーズ\r
  95                  * @alias Audio.prototype.pause\r
  96                  */\r
  97                 'pause' : function(){\r
  98                         var pair = X_Pair_get( this );\r
  99                         pair && pair.pause();\r
 100                         return this;\r
 101                 },\r
 102                 /**\r
 103                  * 状態の getter と setter\r
 104                  * @alias Audio.prototype.state\r
 105                  */\r
 106                 'state' : function( obj ){\r
 107                         var pair = X_Pair_get( this );\r
 108                         if( obj === undefined ){\r
 109                                 return pair ? pair.getState() :\r
 110                                         {\r
 111                                         'startTime'     : -1,\r
 112                                         'endTime'       : -1,\r
 113                                         'loopStartTime' : -1,\r
 114                                         'loopEndTime'   : -1,\r
 115                                         'currentTime'   : -1,\r
 116                                         'loop'          : false,\r
 117                                         'looded'        : false,\r
 118                                         'error'         : false,\r
 119                                         'playing'       : false,\r
 120                                         'source'        : this[ 'source' ] || '',\r
 121                                         'duration'      : 0\r
 122                                         };\r
 123                         };\r
 124                         pair && pair.setState( obj );\r
 125                         return this;\r
 126                 },              \r
 127                 /**\r
 128                  * ループの getter と setter\r
 129                  * @alias Audio.prototype.loop\r
 130                  */\r
 131                 'loop' : function( v ){\r
 132                         var pair = X_Pair_get( this );\r
 133                         pair && pair.loop( v );\r
 134                         return this;\r
 135                 },\r
 136                 /**\r
 137                  * ボリュームの getter と setter 実装不十分！\r
 138                  * @alias Audio.prototype.volume\r
 139                  */\r
 140                 'volume' : function( v ){\r
 141                         var pair = X_Pair_get( this );\r
 142                         pair && pair.volume( v );\r
 143                         return this;\r
 144                 },\r
 145                 /**\r
 146                  * 再生位置。\r
 147                  * @alias Audio.prototype.currentTime\r
 148                  */\r
 149                 'currentTime' : function( v ){\r
 150                         var pair = X_Pair_get( this );\r
 151                         pair && pair.currentTime( v );\r
 152                         return this;\r
 153                 },\r
 154                 /**\r
 155                  * 再生中か？\r
 156                  * @alias Audio.prototype.isPlaying\r
 157                  */\r
 158                 'isPlaying' : function(){\r
 159                         var pair = X_Pair_get( this );\r
 160                         return pair && pair.playing;\r
 161                 }\r
 162                 \r
 163         }\r
 164 );\r
 165 \r
 166 function X_Audio_handleEvent( e ){\r
 167         var backend;\r
 168         \r
 169         switch( e.type ){\r
 170                 case X_EVENT_BACKEND_READY :\r
 171                         backend = X_Audio_BACKENDS[ e[ 'backendID' ] ];\r
 172                 \r
 173                         this[ 'unlisten' ]( X_EVENT_BACKEND_NONE, X_Audio_handleEvent );\r
 174                         this[ 'source' ]      = e[ 'source' ];\r
 175                         this[ 'backendName' ] = backend.backendName;\r
 176                         X_Pair_create( this, backend.klass( this, e[ 'source' ], e[ 'option' ] ) );\r
 177                         break;\r
 178                 \r
 179                 case X_EVENT_BACKEND_NONE :\r
 180                         this[ 'kill' ]();\r
 181                         break;\r
 182                 \r
 183                 case X_EVENT_KILL_INSTANCE :\r
 184                         backend = X_Pair_get( this );\r
 185                         backend && backend[ 'kill' ]();\r
 186                         X_Pair_release( this, backend );\r
 187                         break;\r
 188         };\r
 189 };\r
 190 \r
 191 \r
 192 /*\r
 193  * TODO preplayerror play してみたら error が出た、backend の変更。\r
 194  */\r
 195 \r
 196 function X_Audio_startDetectionBackend( backend, xaudio, sourceList, option ){\r
 197         var source = sourceList[ 0 ] || '', \r
 198                 ext    = X_URL_getEXT( source ),\r
 199                 sup;\r
 200         \r
 201         if( source && backend ){\r
 202                 sup      = [ xaudio, sourceList, option, source, ext ];\r
 203                 sup[ 5 ] = sup;\r
 204                 \r
 205                 xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, backend, X_Audio_onEndedDetection, sup );\r
 206                 backend.detect( xaudio, source, ext );\r
 207         } else {\r
 208                 xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 209         };\r
 210 };\r
 211 \r
 212 function X_Audio_onEndedDetection( e, xaudio, sourceList, option, source, ext, sup ){\r
 213         var i = X_Audio_BACKENDS.indexOf( this ), backend;\r
 214         \r
 215         if( e.canPlay ){\r
 216                 xaudio[ 'asyncDispatch' ]( {\r
 217                         type          : X_EVENT_BACKEND_READY,\r
 218                         'option'      : option,\r
 219                         'source'      : source,\r
 220                         'backendName' : this[ 'backendName' ],\r
 221                         'backendID'   : i\r
 222                 } );                    \r
 223         } else {\r
 224                 console.log( 'No ' + source + ' ' + this[ 'backendName' ] );\r
 225                 if( sup[ 3 ] = source = sourceList[ sourceList.indexOf( source ) + 1 ] ){\r
 226                         sup[ 4 ] = ext    = X_URL_getEXT( source );\r
 227                         xaudio[ 'listenOnce' ]( X_EVENT_COMPLETE, this, X_Audio_onEndedDetection, sup );\r
 228                         this.detect( xaudio, source, ext );\r
 229                 } else\r
 230                 if( backend = X_Audio_BACKENDS[ i + 1 ] ){\r
 231                         X_Audio_startDetectionBackend( backend, xaudio, sourceList, option );\r
 232                 } else {\r
 233                         xaudio[ 'asyncDispatch' ]( X_EVENT_BACKEND_NONE );\r
 234                 };                              \r
 235         };\r
 236 };\r
 237 \r
 238 \r
 239 \r
 240 var X_Audio_AbstractAudioBackend = X_EventDispatcher[ 'inherits' ](\r
 241         'X.AbstractAudioBackend',\r
 242         X_Class.ABSTRACT,\r
 243         {\r
 244                 \r
 245                 url           : '',\r
 246                 target        : null,\r
 247                 \r
 248                 startTime     : 0,\r
 249                 endTime       : -1,\r
 250                 loopStartTime : -1,\r
 251                 loopEndTime   : -1,\r
 252                 seekTime      : -1,\r
 253                 duration      : 0,\r
 254 \r
 255                 playing       : false,\r
 256                 error         : 0,                      \r
 257                 autoLoop      : false,\r
 258                 looped        : false,\r
 259                 autoplay      : false,\r
 260                 gain          : 0.5,\r
 261                 \r
 262                 play : function( startTime, endTime, loop, loopStartTime, loopEndTime ){\r
 263                         if( 0 <= startTime ){\r
 264                                 this.setState( {\r
 265                                         currentTime   : startTime,\r
 266                                         startTime     : startTime,\r
 267                                         endTime       : endTime,\r
 268                                         loop          : loop,\r
 269                                         loopStartTime : loopStartTime,\r
 270                                         loopEndTime   : loopEndTime\r
 271                                 } );\r
 272                         };\r
 273                         this.actualPlay();\r
 274                 },\r
 275                 \r
 276                 seek : function( seekTime ){\r
 277                         if( seekTime < X_AudioWrapper_getEndTime( this ) ){\r
 278                                 this.setState( { currentTime : seekTime } );\r
 279                         };\r
 280                 },\r
 281                 \r
 282                 pause : function(){\r
 283                         this.playing && this.actualPause();\r
 284                 },              \r
 285                 \r
 286                 loop : function( v ){\r
 287                         if( v === undefined ){\r
 288                                 return this.autoLoop;\r
 289                         };\r
 290                         this.setState( { loop : v } );\r
 291                 },\r
 292 \r
 293                 volume : function( v ){\r
 294                         if( v === undefined ){\r
 295                                 return this.gain;\r
 296                         };\r
 297                         this.setState( { volume : v } );\r
 298                 },\r
 299 \r
 300                 currentTime : function( v ){\r
 301                         if( v === undefined ){\r
 302                                 return this.playing ? this.getActualCurrentTime() : this.seekTime;\r
 303                         };\r
 304                         this.setState( { currentTime : v } );\r
 305                 },\r
 306                 \r
 307                 getState : function(){\r
 308                         \r
 309                     return {\r
 310                         'startTime'     : this.startTime,\r
 311                         'endTime'       : this.endTime < 0 ? this.duration : this.endTime,\r
 312                         'loopStartTime' : this.loopStartTime < 0 ? this.startTime : this.loopStartTime,\r
 313                         'loopEndTime'   : this.loopEndTime < 0 ? ( this.endTime || this.duration ) : this.loopEndTime,\r
 314                         'loop'          : this.autoLoop,\r
 315                         'looped'        : this.looped,\r
 316                         'volume'        : this.gain,\r
 317                         'playing'       : this.playing,                         \r
 318                         'duration'      : this.duration,\r
 319                         \r
 320                         'currentTime'  : this.playing ? this.getActualCurrentTime() : this.seekTime,\r
 321                         'error'        : this.getActualError ? this.getActualError() : this.error\r
 322                     };\r
 323                 },\r
 324                 \r
 325                 setState : function( obj ){\r
 326                         var playing = this.playing,\r
 327                                 k, v,\r
 328                                 end = 0, seek = 0, volume = 0;\r
 329                         \r
 330                         for( k in obj ){\r
 331                                 v = obj[ k ];\r
 332                                 switch( k ){\r
 333                                         case 'currentTime' :\r
 334                                                 v = X_AudioWrapper_timeStringToNumber( v );\r
 335                                                 if( X_Type_isNumber( v ) ){\r
 336                                                         if( playing ){\r
 337                                                                 if( this.getActualCurrentTime() !== v ){\r
 338                                                                         seek = 2;\r
 339                                                                         this.seekTime = v;\r
 340                                                                 };                                                              \r
 341                                                         } else {\r
 342                                                                 this.seekTime = v;\r
 343                                                         };\r
 344                                                 } else {\r
 345                                                         continue;\r
 346                                                 };\r
 347                                                 break;\r
 348                                                         \r
 349                                         case 'startTime'     :\r
 350                                                 v = X_AudioWrapper_timeStringToNumber( v );\r
 351                                                 if( v || v === 0 ){\r
 352                                                         if( this.startTime !== v ){\r
 353                                                                 this.startTime = v;                                     \r
 354                                                         };\r
 355                                                 } else {\r
 356                                                         delete this.startTime;\r
 357                                                 };\r
 358                                                 break;\r
 359                                         \r
 360                                         case 'endTime'       :\r
 361                                                 v = X_AudioWrapper_timeStringToNumber( v );\r
 362                                                 if( v || v === 0 ){\r
 363                                                         if( this.endTime !== v ){\r
 364                                                                 this.endTime = v;\r
 365                                                                 if( playing ) end = 1;                                          \r
 366                                                         };\r
 367                                                 } else {\r
 368                                                         delete this.endTime;\r
 369                                                         if( playing ) end = 1;\r
 370                                                 };\r
 371                                                 break;\r
 372                                                 \r
 373                                         case 'loopStartTime' :\r
 374                                                 v = X_AudioWrapper_timeStringToNumber( v );\r
 375                                                 if( v || v === 0 ){\r
 376                                                         if( this.loopStartTime !== v ){\r
 377                                                                 this.loopStartTime = v;                                 \r
 378                                                         };\r
 379                                                 } else {\r
 380                                                         delete this.loopStartTime;\r
 381                                                 };\r
 382                                                 break;\r
 383                                                 \r
 384                                         case 'loopEndTime'   :\r
 385                                                 v = X_AudioWrapper_timeStringToNumber( v );\r
 386                                                 if( v || v === 0 ){\r
 387                                                         if( this.loopEndTime !== v ){\r
 388                                                                 this.loopEndTime = v;\r
 389                                                                 if( playing ) end = 1;                                          \r
 390                                                         };\r
 391                                                 } else {\r
 392                                                         delete this.loopEndTime;\r
 393                                                         if( playing ) end = 1;\r
 394                                                 };\r
 395                                                 break;\r
 396                 \r
 397                                         case 'looped' :\r
 398                                                 if( X_Type_isBoolean( v ) && this.looped !== v ){\r
 399                                                         this.looped = v;\r
 400                                                         if( playing ) seek = 2;\r
 401                                                 };\r
 402                                                 break;\r
 403                                                 \r
 404                                         case 'loop' :\r
 405                                                 if( X_Type_isBoolean( v ) && this.autoLoop !== v ){\r
 406                                                         this.autoLoop = v;\r
 407                                                 };\r
 408                                                 break;\r
 409                                                 \r
 410                                         case 'autoplay' :\r
 411                                                 if( X_Type_isBoolean( v ) && this.autoplay !== v ){\r
 412                                                         this.autoplay = v;\r
 413                                                 };\r
 414                                                 break;\r
 415                 \r
 416                                         case 'volume' :\r
 417                                                 if( X_Type_isNumber( v ) ){\r
 418                                                         v = v < 0 ? 0 : 1 < v ? 1 : v;\r
 419                                                         if( this.gain !== v ){\r
 420                                                                 this.gain = v;\r
 421                                                                 // if playing -> update\r
 422                                                                 if( playing ) volume = 4;\r
 423                                                         };\r
 424                                                 };\r
 425                                                 break;\r
 426                                 };\r
 427                         };\r
 428                         \r
 429                         if( this.endTime < this.startTime ||\r
 430                                 ( this.loopEndTime < 0 ? this.endTime : this.loopEndTime ) < ( this.loopStartTime < 0 ? this.startTime : this.loopStartTime ) ||\r
 431                                 X_AudioWrapper_getEndTime( this ) < this.seekTime// ||\r
 432                                 //this.duration < this.endTime\r
 433                         ){\r
 434                                 console.log( 'setState 0:' + this.startTime + ' -> ' + this.endTime + ' d:' + this.duration + ' 1:' + this.loopStartTime + ' -> ' + this.loopEndTime );\r
 435                                 return;\r
 436                         };\r
 437                         \r
 438                         v = end + seek + volume;\r
 439                         return v && this.afterUpdateState( v );         \r
 440                 }\r
 441                 \r
 442         }\r
 443 );\r
 444 \r
 445 \r
 446 function X_AudioWrapper_timeStringToNumber( time ){\r
 447         var ary, ms, s = 0, m = 0, h = 0;\r
 448         if( X_Type_isNumber( time ) ) return time;\r
 449         if( !X_Type_isString( time ) || !time.length ) return;\r
 450 \r
 451         ary = time.split( '.' );\r
 452         ms  = parseInt( ( ary[ 1 ] + '000' ).substr( 0, 3 ) ) || 0;\r
 453         \r
 454         ary = ary[ 0 ].split( ':' );\r
 455         if( 3 < ary.length ) return;\r
 456         \r
 457         switch( ary.length ){\r
 458                 case 0 :\r
 459                         break;\r
 460                 case 1 :\r
 461                         s = parseInt( ary[ 0 ] ) || 0;\r
 462                         break;\r
 463                 case 2 :\r
 464                         m = parseInt( ary[ 0 ] ) || 0;\r
 465                         s = parseInt( ary[ 1 ] ) || 0;\r
 466                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 467                         break;\r
 468                 case 3 :\r
 469                         h = parseInt( ary[ 0 ] ) || 0;\r
 470                         m = parseInt( ary[ 1 ] ) || 0;\r
 471                         s = parseInt( ary[ 2 ] ) || 0;\r
 472                         if( 60 <= s ) alert( 'invalid time string ' + time );\r
 473                         if( 60 <= m ) alert( 'invalid time string ' + time );\r
 474                         break;\r
 475                 default :\r
 476                         alert( 'invalid time string ' + time );\r
 477         };\r
 478         ms = ( h * 3600 + m * 60 + s ) * 1000 + ms;\r
 479         return ms < 0 ? 0 : ms;\r
 480 };\r
 481 \r
 482 function X_AudioWrapper_getStartTime( audioWrapper, endTime, delSeekTime ){\r
 483         var seek = audioWrapper.seekTime;\r
 484         if( delSeekTime ) delete audioWrapper.seekTime;\r
 485         \r
 486         if( 0 <= seek ){\r
 487                 if( audioWrapper.duration <= seek || endTime < seek ) return 0;\r
 488                 return seek;\r
 489         };\r
 490         \r
 491         if( audioWrapper.looped && 0 <= audioWrapper.loopStartTime ){\r
 492                 if( audioWrapper.duration <= audioWrapper.loopStartTime || endTime < audioWrapper.loopStartTime ) return 0;\r
 493                 return audioWrapper.loopStartTime;\r
 494         };\r
 495         \r
 496         if( audioWrapper.startTime < 0 || audioWrapper.duration <= audioWrapper.startTime ) return 0;\r
 497         return audioWrapper.startTime;\r
 498 };\r
 499 \r
 500 function X_AudioWrapper_getEndTime( audioWrapper ){\r
 501         var duration = audioWrapper.duration;\r
 502         \r
 503         if( audioWrapper.looped && 0 <= audioWrapper.loopEndTime ){\r
 504                 if( duration <= audioWrapper.loopEndTime ) return duration;\r
 505                 return audioWrapper.loopEndTime;\r
 506         };\r
 507         \r
 508         if( audioWrapper.endTime < 0 || duration <= audioWrapper.endTime ) return duration;\r
 509         return audioWrapper.endTime;\r
 510 };\r
 511 \r