0.6.x/js/07_audio/02_XHTMLAudio.js

   1 \r
   2 /*\r
   3  * original : uupaa-js HTML5Audio.js\r
   4  * https://code.google.com/p/uupaa-js/source/browse/trunk/0.8/src/Audio/HTML5Audio.js?r=568\r
   5  */\r
   6 \r
   7 var X_Audio_HTMLAudio_playTrigger =\r
   8                 6 <= X_UA[ 'iOS' ] ? 'loadeddata' :\r
   9                 X_UA[ 'iOS' ] < 5  ? 'stalled' :\r
  10                 X_UA[ 'iOS' ]      ? 'suspend' :\r
  11                 X_UA[ 'AndroidBrowser2' ] || X_UA[ 'AndroidBrowser3' ] ? 'stalled' : // Android 2.3.5(SBM101SH) では stalled は発生しない,,,\r
  12                 X_UA[ 'AndroidBrowser4' ] ? 'loadeddata' : \r
  13                 X_UA[ 'OperaMobile' ] || X_UA[ 'OperaTablet' ] ? 'loadeddata' :\r
  14                 //X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ? 'canplay' :\r
  15                         'loadeddata', //'canplay',\r
  16         X_Audio_HTMLAudioWrapper,\r
  17         X_Audio_constructor = window[ 'Audio' ] || window.HTMLAudioElement,\r
  18         X_Audio_rawAudio,\r
  19         // Opera Mobile 12 android4.4.4 & 2.3.5 は 2回目以降の currentTime へのセットで currentTime が更新されなくなるため、タイマーを使用する\r
  20         X_Audio_HTMLAudioWrapper_currentTimeFix  = !!X_UA[ 'OperaMobile' ] || !!X_UA[ 'OperaTablet' ], // || ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),\r
  21         // Android1.6+MobileOpera12では無理っぽい、、、\r
  22         X_Audio_HTMLAudioWrapper_badOperaAndroid = X_Audio_HTMLAudioWrapper_currentTimeFix && X_UA[ 'Android' ] < 2,\r
  23 \r
  24         // 一方 Desktop の Opera12 は、loadeddata 等では duration が infinity で、再生後の durationchange 時に duration が判明する。\r
  25         // opera12 volume, mute の変更が2度目以降できない\r
  26         // duration 判明後には currentTime によるシークと、現在時間の取得が可能になる。\r
  27         // canplay で play() durationchange で duration が取れたら loadedmetadata->loadeddata -> canplay する\r
  28         // boombox.js に書いてあった currentTime の効かないブラウザってこいつのことみたい、、、\r
  29         // Opera12.17 Win32(XP) portable apps は勝手に再生が始まる、、、その際には timeupdate が発行されない、、、　iframe+image+audio で使わないときは破棄する、とか。\r
  30         // opera11、10.54 WinXP はまとも、、、\r
  31         // X_Audio_Sprite_handleEvent でも使用\r
  32         X_Audio_HTMLAudioWrapper_ieMobile9Fix    = ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),\r
  33         X_Audio_HTMLAudioWrapper_durationFix     = ( !X_Audio_HTMLAudioWrapper_currentTimeFix && 12 <= X_UA[ 'Opera' ] ),\r
  34         \r
  35         X_Audio_HTMLAudioWrapper_shortPlayFix    = X_UA[ 'AndroidBrowser' ] && X_UA[ 'AndroidWebkit' ] <= 534.3, // Android 4.1.1 でも遭遇\r
  36         \r
  37         X_Audio_codecs;\r
  38 \r
  39 if( X_Audio_constructor && !X_Audio_HTMLAudioWrapper_badOperaAndroid ){\r
  40         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
  41         //引数なしで new Audio() とすると、Operaでエラーになるそうなので注意。\r
  42         X_Audio_rawAudio = new X_Audio_constructor( '' );\r
  43 \r
  44         if( X_Audio_rawAudio.canPlayType ){\r
  45                 X_Audio_codecs = {\r
  46               'mp3'  : X_Audio_rawAudio.canPlayType('audio/mpeg'),\r
  47               'opus' : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="opus"'),\r
  48               'ogg'  : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="vorbis"'),\r
  49               'wav'  : X_Audio_rawAudio.canPlayType('audio/wav; codecs="1"'),\r
  50               'aac'  : X_Audio_rawAudio.canPlayType('audio/aac'),\r
  51               'm4a'  : X_Audio_rawAudio.canPlayType('audio/x-m4a') + X_Audio_rawAudio.canPlayType('audio/m4a') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  52               'mp4'  : X_Audio_rawAudio.canPlayType('audio/x-mp4') + X_Audio_rawAudio.canPlayType('audio/mp4') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  53               'weba' : X_Audio_rawAudio.canPlayType('audio/webm; codecs="vorbis"')\r
  54                 };\r
  55                 (function( k, v ){\r
  56                         for( k in X_Audio_codecs ){\r
  57                                 if( X_EMPTY_OBJECT[ k ] ) continue;\r
  58                                 v = X_Audio_codecs[ k ];\r
  59                                 X_Audio_codecs[ k ] = v && v.split( 'no' ).join( '' );\r
  60                                 console.log( k + ' ' + X_Audio_codecs[ k ] );\r
  61                         };\r
  62                 })();\r
  63         } else {\r
  64                 // iOS3.2.3\r
  65                 X_Audio_codecs = {\r
  66               'mp3'  : X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  67               'ogg'  : 5 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ,\r
  68               'wav'  : X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  69               'aac'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  70               'm4a'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  71               'mp4'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  72               'weba' : 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] // firefox4+(Gecko2+)\r
  73                 };\r
  74         };\r
  75         \r
  76         X_Audio_HTMLAudioWrapper = X_Audio_AbstractAudioBackend[ 'inherits' ](\r
  77                 'X.AV.HTML5AudioWrapper',\r
  78                 X_Class.POOL_OBJECT,\r
  79                 {\r
  80                         _playTime        : 0,\r
  81                         _closed          : true,\r
  82                         _loaded          : false,\r
  83                         _beginTime       : 0,\r
  84                         _playForDuration : 0,\r
  85                         _lastCurrentTime : 0,\r
  86                         _src             : '',\r
  87                         \r
  88                         Constructor : function( target, source, option ){\r
  89                                 var raw;\r
  90                                 \r
  91                                 this.target  = target || this;\r
  92                                 this._closed = false;\r
  93                                 \r
  94                                 this.setState( option );\r
  95 \r
  96                                 if( option[ 'useVideo' ] ){\r
  97                                         this[ '_rawObject' ]  = raw = document.createElement( 'video' );\r
  98                         raw.preload           = 'none'; // auto, metadata, none\r
  99                         //raw.autoplay = false, // no-auto\r
 100                         raw.loop              = false;\r
 101                         raw.muted             = false;\r
 102                         raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 103                         raw.style.cssText     = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 104                                         raw.controls          = false;\r
 105                                         raw.WebKitPlaysInline = true;\r
 106                                         raw.src               = source;\r
 107                                         //raw.onclick  = "alert('play');this.actualPlay();";\r
 108                                         document.body.appendChild( raw );\r
 109                                         //raw.load();\r
 110                                 } else {\r
 111                                         this[ '_rawObject' ] = X_Audio_rawAudio || new X_Audio_constructor( source );\r
 112                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 113                                         this[ '_rawObject' ].autobuffer = false;\r
 114                                         this._src = source;\r
 115                                 };\r
 116                                 \r
 117                                 this[ 'listen' ]( [\r
 118                                                 'loadstart', 'load', 'progress', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'play', 'pause', 'loadedmetadata',\r
 119                                                 'loadeddata', 'waiting', 'playing', 'canplay', 'canplaythrough', 'seeking', 'seeked', 'timeupdate', 'ended',\r
 120                                                 'ratechange', 'durationchange', 'volumechange' ], this.handleEventProxy );                              \r
 121 \r
 122                                 //document.body.appendChild( this[ '_rawObject' ] );\r
 123                                 this[ '_rawObject' ].autoplay = false;\r
 124 \r
 125                                 if( X_Audio_rawAudio === this[ '_rawObject' ] ){\r
 126                                         if( X_Audio_HTMLAudioWrapper_badOperaAndroid ){\r
 127                                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( 12 );\r
 128                                                 X_EventDispatcher_toggleAllEvents( this, false );\r
 129                                                 this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 130                                                 //X_EventDispatcher_toggleAllEvents( this, true );\r
 131                                         } else {\r
 132                                                 X_Audio_rawAudio.src = source;\r
 133                                         };\r
 134 \r
 135                                         //this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 136                                         /*!X_Audio_Sprite_needTouchFirst && */ X_Audio_rawAudio.load(); // 要る?\r
 137                                         X_Audio_rawAudio = null;\r
 138                                 };\r
 139 \r
 140                                 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE );\r
 141                         },\r
 142                         \r
 143                         handleEvent : function( e ){\r
 144                                 switch( e.type ){\r
 145 \r
 146                                         case X_EVENT_KILL_INSTANCE :\r
 147                                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 148                                                 // http://ingaouhou.com/archives/3633\r
 149                                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 150                                                 this.playing && this.actualPause();\r
 151                                                 delete this._closed;\r
 152                                                 delete this._loaded;\r
 153                                                 \r
 154                                                 this[ '_rawObject' ].src = '';\r
 155                                                 this[ '_rawObject' ].load();\r
 156                                                 \r
 157                                                 // removeChild for video\r
 158                                                 break;\r
 159                                 };\r
 160                         },\r
 161                         /*\r
 162                          * http://uguisu.skr.jp/html/table3.html\r
 163                          */\r
 164                         handleEventProxy : function( e ){\r
 165                                 var type, loaded, end, now;\r
 166                                 \r
 167                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( e.type );\r
 168                                 \r
 169                                 X_Audio_HTMLAudioWrapper_ieMobile9Fix && e.type !== 'timeupdate' && console.log( e.type );\r
 170                                 \r
 171                                 switch( e.type ){\r
 172                                         case 'loadstart' :      //      ブラウザがコンテンツの検索を開始した場合に発生\r
 173                                                 break;\r
 174                                         case 'progress' :       //      ブラウザがコンテンツの取得を実行した場合に発生\r
 175                                                 console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 176                                                 // iem9 で常に0 this[ '_rawObject' ].networkState;\r
 177                                                 // opera Android 12 で　buffered.end() へのアクセスはエラー　try catch も無効、iem9 は常に end(0) = 0\r
 178                                                 //console.log( 'buffered.end ' + this[ '_rawObject' ].buffered && this[ '_rawObject' ].buffered.end(0) ); \r
 179                                                 break;\r
 180                                         \r
 181                                         case 'canplay' :        //      今すぐに再生を再開できるが、バッファリングが不十分でコンテンツを最後まで表示できないと予測している場合に発生\r
 182                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration === 0 ){\r
 183                                                         //console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 184                                                         this._playForDuration = 1;\r
 185                                                         this[ '_rawObject' ].play();\r
 186                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 187                                                         return;\r
 188                                                 };\r
 189                                         case 'loadedmetadata' : //      ブラウザがメディアリソースの長さと寸法を判定した場合に発生\r
 190                                         case 'loadeddata' :     //      コンテンツの表示を現在の再生位置で初めて行えるようになった場合に発生\r
 191                                         case 'canplaythrough' : //      今すぐに再生を開始してもバッファリングで停止することなく最後まで表示できると予測している場合に発生\r
 192                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration !== 2 ) return;\r
 193                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 194                                                 break;\r
 195         \r
 196                                         case 'stalled' :        //      ブラウザがコンテンツの取得を試みたが、データがまだ用意されていない場合に発生\r
 197                                                 // Android2 で ready 扱い?\r
 198                                         case 'suspend' :        //      ブラウザが意図的にコンテンツの取得を現在行っていない場合に発生（ダウンロードは未完了）\r
 199                                                 // iOS で ready 扱い\r
 200                                         case 'emptied' :        //      読み込み中に致命的なエラーが発生したか、実行状態ででload()メソッドが実行された場合に発生\r
 201                                         case 'abort' :          //      ダウンロードの完了前にコンテンツの取得を停止した場合に発生（この停止はエラーによるものではない）\r
 202                                                 break;\r
 203                                                 \r
 204                                         case 'error' :          //      コンテンツの取得実行中にエラーが発生した場合に発生\r
 205                                                 type = X_EVENT_ERROR;\r
 206                                                 break;\r
 207                                         \r
 208                                         case 'playing' :        //      再生が開始された場合に発生\r
 209                                                 if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 210                                                         this._playTime  = X_Timer_now();\r
 211                                                 };\r
 212                                                 type = X_EVENT_MEDIA_PLAYING;\r
 213                                         case 'play' :           //      再生が開始された。play()メソッドからの復帰後に発生する場合に発生\r
 214                                         case 'pause' :          //      再生が一時停止された。pauseメソッドからの復帰後に発生する場合に発生\r
 215                                         case 'seeked' :         //      シークがfalseに変化した場合に発生\r
 216                                         case 'ratechange' :     // defaultPlaybackRate属性とplaybackRate属性のどちらかが更新された場合に発生\r
 217                                         case 'volumechange' :   // volume属性とmuted属性のどちらかが変化した場合に発生\r
 218                                                 if( this._playForDuration === 1 ) return;\r
 219                                                 break;\r
 220                                                 \r
 221                                         case 'waiting' :        //      次のフレームが利用不可のため再生を停止したが、そのフレームがやがて利用可能になると想定している場合に発生\r
 222                                                 type = X_EVENT_MEDIA_WAITING;\r
 223                                         case 'seeking' :        //      シークがtrueに変化し、イベントを発生させるのに十分な時間がシーク操作にかかっている場合に発生\r
 224                                                 type = type || X_EVENT_MEDIA_SEEKING;\r
 225                                                 if( this._playForDuration === 1 ) return;\r
 226                                                 break;\r
 227                                                 \r
 228                                         case 'ended' :\r
 229                                                 if( !this._closed && this.autoLoop ){\r
 230                                                         if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){\r
 231                                                                 this.looped = true;\r
 232                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 233                                                                 this.actualPlay();\r
 234                                                         };\r
 235                                                         return;\r
 236                                                 };\r
 237                                                 type = X_EVENT_MEDIA_ENDED;\r
 238                                                 this.seekTime = 0;\r
 239                                                 delete this.playing;\r
 240                                                 break;\r
 241         \r
 242                                         case 'timeupdate' :     //      通常の再生が行われ現在の再生位置の変化が起こった場合に発生\r
 243                                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix ){\r
 244                                                         if( this._playForDuration === 1 ){\r
 245                                                                 console.log( 'tu ' + this[ '_rawObject' ].duration );\r
 246                                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 247                                                                         this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 248                                                                         this._playForDuration = 2;\r
 249                                                         loaded = true;\r
 250                                                         //console.log( 'durationFix が完了' + this.duration );\r
 251                                                         break;\r
 252                                                                 } else {\r
 253                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 254                                                                         return;\r
 255                                                                 };\r
 256                                                         } else\r
 257                                                         if( this[ '_rawObject' ].currentTime === this._lastCurrentTime ){\r
 258                                                                 //this.target[ 'dispatch' ]( 'seeking' );\r
 259                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 260                                                                 return;\r
 261                                                         };\r
 262                                                         this._lastCurrentTime = this[ '_rawObject' ].currentTime;\r
 263                                                 };\r
 264                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 265 \r
 266                                     if( this.playing ){\r
 267                                         end = X_AudioWrapper_getEndTime( this );\r
 268                                         now = this.getActualCurrentTime();\r
 269                                         console.log( end + ' / ' + now );\r
 270                                         if( 0 + end <= 0 + now ){ // なぜか iem9 で必要,,,\r
 271                                                 if( this.autoLoop ){\r
 272                                                         if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){\r
 273                                                                 this.looped = true;\r
 274                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 275                                                                 this.actualPlay();\r
 276                                                         };\r
 277                                                 } else {\r
 278                                                         this.actualPause();\r
 279                                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 280                                                 };\r
 281                                                 return;\r
 282                                         };\r
 283                                     } else {\r
 284                                         return;\r
 285                                     };\r
 286                                     type = X_EVENT_MEDIA_PLAYING;\r
 287                                                 break;\r
 288                                                 \r
 289                                         case 'durationchange' : // duration属性が更新された場合に発生\r
 290                                                 \r
 291                                                 if( !X_Audio_HTMLAudioWrapper_durationFix ){\r
 292                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 293                                                 } else\r
 294                                                 // Desktop Opera では Infinity, IEM9 では NaN\r
 295                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 296                                                         \r
 297                                                         //console.log( this[ '_rawObject' ].duration );\r
 298                                                         \r
 299                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 300                                                         \r
 301                                                         if( this._playForDuration === 0 ) this._playForDuration = 2;\r
 302                                                         \r
 303                                                         if( this._playForDuration === 1 ){\r
 304                                                                 this._playForDuration = 2;\r
 305                                                                 \r
 306                                                                 console.log( 'Loaded ' + this._loaded );\r
 307                                                                 \r
 308                                                                 if( this._loaded ){\r
 309                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;\r
 310                                                                         console.log( '設定 ' + this._beginTime );\r
 311                                                                         return;\r
 312                                                                 };\r
 313 \r
 314                                                 loaded = true;\r
 315                                                 console.log( 'durationFix が完了' + this.duration );\r
 316                                                 \r
 317                                                 if( this.autoplay ){\r
 318                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;      \r
 319                                                 } else {\r
 320                                                         // Opera12.17 WinXP で勝手に再生される不具合\r
 321                                                         // これで一応再生は止まる、、、\r
 322                                                                         this[ '_rawObject' ].src = '';\r
 323                                                                         //this[ '_rawObject' ].load();                                          \r
 324                                                 };\r
 325                                                         };\r
 326                                                         \r
 327                                                 };\r
 328                                                 break;\r
 329                                         \r
 330                                 };\r
 331                                 \r
 332                                 \r
 333                                 if( !this._loaded && ( loaded || e.type === X_Audio_HTMLAudio_playTrigger || e.type === 'loadeddata' ) ){\r
 334                                         this.autoplay && X_Timer_once( 16, this, this.play );\r
 335                                         this._loaded = true;\r
 336                                         this.target[ 'asyncDispatch' ]( X_EVENT_READY );\r
 337                                         console.log( 'Loaded! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 338                                         return;\r
 339                                 };\r
 340                                 \r
 341                                 if( !loaded && type ){\r
 342                                         this.target[ 'dispatch' ]( type );\r
 343                                         type === X_EVENT_ERROR && this[ 'kill' ]();\r
 344                                 };\r
 345                         },\r
 346 \r
 347                         actualPlay : function(){\r
 348                                 var begin, end;\r
 349                                 \r
 350                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 351                                 if( this._closed ) return;\r
 352                                 if( !this._loaded && !X_Audio_HTMLAudioWrapper_ieMobile9Fix /* && !X_Audio_Sprite_inTouchAction */ ){\r
 353                         this.autoplay = true;\r
 354                         return;\r
 355                                 };\r
 356                                 \r
 357                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix && this._playForDuration === 0 ){\r
 358                                         console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 359                                         this._playForDuration = 1;\r
 360                                 };\r
 361 \r
 362                                 end   = X_AudioWrapper_getEndTime( this );\r
 363                                 begin = this._beginTime = X_AudioWrapper_getStartTime( this, end, true );\r
 364 \r
 365                     if( X_Audio_HTMLAudioWrapper_shortPlayFix ){\r
 366                         begin -= end - begin > 1000 ? 200 : 400;\r
 367                         begin  = begin < 0 ? 0 : begin;\r
 368                     };\r
 369 \r
 370                                 if( !this[ '_rawObject' ].src ){\r
 371                                         this._beginTime = begin;\r
 372                                         this[ '_rawObject' ].src = this._src;\r
 373                                         delete this._playForDuration;\r
 374                                 };\r
 375 \r
 376                             if( !this.playing ){\r
 377                                     if( X_UA[ 'Chrome' ] ){ // [CHROME][FIX] volume TODO どの version で 修正される？\r
 378                                         // [!] delay\r
 379                                         X_Timer_once( 0, this, this._fixForChrome );\r
 380                                         this[ '_rawObject' ].volume = 0;\r
 381                                     } else {\r
 382                                         this[ '_rawObject' ].volume = X_Audio_HTMLAudioWrapper_ieMobile9Fix ? 1 : this.gain;\r
 383                                     };\r
 384                                 this[ '_rawObject' ].play();\r
 385                                 this.playing = true;\r
 386                             };\r
 387                                 //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 388                                 //Firefox3.6では一度も play() していない状態で currentTime = 0 を実行するとエラーになる。\r
 389                                 //また、GoogleChrome7 では currentTime = 0 直後に play() すると、pause()した位置前後の音が混ざることがある。(少なくとも自分の環境では)\r
 390                                 this[ '_rawObject' ].currentTime = this._lastCurrentTime = begin / 1000;\r
 391 \r
 392                             console.log( '[HTMLAudio] play ' + begin + ' -> ' + end );\r
 393                     \r
 394                     if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 395                         this._beginTime = begin;\r
 396                         this._playTime  = X_Timer_now();\r
 397                     };\r
 398 \r
 399                         },\r
 400                                 \r
 401                                 // [CHROME][FIX] volume\r
 402                                 _fixForChrome : X_UA[ 'Chrome' ] && function(){\r
 403                                         !this._closed && ( this[ '_rawObject' ].volume = this.gain );\r
 404                                 },\r
 405                         \r
 406                         actualPause : function(){\r
 407                                 if( !this.playing ) return;\r
 408                                 \r
 409                                 this.seekTime = this.getActualCurrentTime();\r
 410 \r
 411                                 delete this._playTime;\r
 412 \r
 413                         !this[ '_rawObject' ].error && this[ '_rawObject' ].pause();\r
 414                         \r
 415                         if( X_Audio_HTMLAudioWrapper_durationFix ){\r
 416                                 this[ '_rawObject' ].src = '';\r
 417                                 // load();\r
 418                         };\r
 419                         delete this.playing;\r
 420                         },\r
 421                         \r
 422                         getActualCurrentTime : function(){\r
 423                                 return ( X_Audio_HTMLAudioWrapper_currentTimeFix ?\r
 424                                                                 X_Timer_now() - this._playTime + this._beginTime :\r
 425                                                                 this[ '_rawObject' ].currentTime * 1000 | 0 );\r
 426                         },\r
 427                 /*\r
 428                 http://www.w3schools.com/tags/av_prop_error.asp\r
 429                 1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 430             2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 431             3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 432             4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 433             */                  \r
 434                         getActualError : function(){\r
 435                                 return this[ '_rawObject' ].error || 0;\r
 436                         },\r
 437                         \r
 438                         afterUpdateState : function( result ){\r
 439                                 if( result & 3 ){ // seek\r
 440                         this.actualPlay();\r
 441                                 } else\r
 442                                 if( result & 4 ){\r
 443                        this[ '_rawObject' ].volume = X_Audio_HTMLAudioWrapper_ieMobile9Fix ? 1 : this.gain;\r
 444                                 };                              \r
 445                         }\r
 446         \r
 447                 }\r
 448         );\r
 449         \r
 450         X_Audio_BACKENDS.push(\r
 451                 {\r
 452                         backendName : 'HTML Audio',\r
 453                 /*\r
 454                  * HTML5 の audio 要素と video 要素でサポートされているメディアフォーマット\r
 455                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 456                  * \r
 457                  * 主要ブラウザのHTML5 audioタグで使えるファイル形式の再生対応状況を調べてみた\r
 458                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 459                  * ダメ元で仕様に含まれていない SHOUTcast もテストしてみました。\r
 460                  * \r
 461                  * IE9 の HTML5 Audio について\r
 462                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 463                  * 1.Audioオブジェクトを作ることができないので、Audioタグを使う\r
 464                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 465                  * 3.wav が不可\r
 466                  * \r
 467                  * IE9でHTML5 autio タグが無効になる\r
 468                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 469                  *  IEのバージョン9.0.8112.16421では、Audioオブジェクトのnewも対応してました。\r
 470                  *  createElement等で動的生成すると、よろしくない\r
 471                  * \r
 472                  * media-can-play-wav-audio.html\r
 473                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 474                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 475                  * \r
 476                  * HTML5 audioタグ ブラウザ間の違い\r
 477                  * http://wiki.bit-hive.com/tomizoo/pg/HTML5%20audio%A5%BF%A5%B0%20%A5%D6%A5%E9%A5%A6%A5%B6%B4%D6%A4%CE%B0%E3%A4%A4\r
 478                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 479                  *  - FireFox3.6, Android 2.3.6については、src変更後、load()を呼び出さないと切り替わらなかった。iPhoneはload()が不要。\r
 480                  */     \r
 481                         detect : function( proxy, source, ext ){\r
 482                                 /*\r
 483                                 var ok, mineType = 'audio/' + ext;\r
 484                                 switch( ext ){\r
 485                                         case 'mp3' :\r
 486                                                 ok = X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 487                                                 mineType = 'audio/mpeg';\r
 488                                                 //if( X_UA[ 'Android' ] && X_UA[ 'Gecko' ] ) mineType = '';\r
 489                                                 break;\r
 490                                         case 'ogg' :\r
 491                                                 ok = 15 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ;\r
 492                                                 if( X_UA[ 'AndroidBrowser' ] ) mineType = '';\r
 493                                                 break;\r
 494                                         case 'm4a' :\r
 495                                                 ok = X_UA[ 'IE' ] || X_UA[ 'WebKit' ];\r
 496                                                 mineType = 'audio/mp4';\r
 497                                                 break;\r
 498                                         case 'webm' :\r
 499                                                 ok = 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] ; // firefox4+(Gecko2+)\r
 500                                                 break;\r
 501                                         case 'wav' :\r
 502                                                 ok = X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 503                                                 //mineType = 'audio/wav'; // audio/x-wav ?\r
 504                                                 break;\r
 505                                         default :\r
 506                                                 mineType = '';\r
 507                                 };\r
 508                                 \r
 509                                 if( !ok && mineType ){\r
 510                                         if( !X_Audio_rawAudio ) X_Audio_rawAudio = new Audio;\r
 511                                         ok = X_Audio_rawAudio.canPlayType( mineType );\r
 512                                         //console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 513                                 };\r
 514                                 console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 515                                 */\r
 516                                 \r
 517                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 518                         },\r
 519                         \r
 520                         klass : X_Audio_HTMLAudioWrapper\r
 521                         \r
 522                 } );\r
 523 \r
 524 /*\r
 525  * \r
 526  * howler.js\r
 527  *     codecs = {\r
 528       mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 529       opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 530       ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 531       wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 532       aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 533       m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 534       mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 535       weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 536     };\r
 537  */\r
 538         \r
 539 };\r
 540 \r
 541 \r
 542 \r
 543 \r
 544 \r