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         // https://html5experts.jp/miyuki-baba/3766/\r
  45         // Chrome for Android31 で HE-AAC が低速再生されるバグ\r
  46         if( X_Audio_rawAudio.canPlayType ){\r
  47                 X_Audio_codecs = {\r
  48               'mp3'  : X_Audio_rawAudio.canPlayType('audio/mpeg'),\r
  49               'opus' : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="opus"'),\r
  50               'ogg'  : X_Audio_rawAudio.canPlayType('audio/ogg; codecs="vorbis"'),\r
  51               'wav'  : X_Audio_rawAudio.canPlayType('audio/wav; codecs="1"'),\r
  52               'aac'  : X_Audio_rawAudio.canPlayType('audio/aac'),\r
  53               'm4a'  : X_Audio_rawAudio.canPlayType('audio/x-m4a') + X_Audio_rawAudio.canPlayType('audio/m4a') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  54               'mp4'  : X_Audio_rawAudio.canPlayType('audio/x-mp4') + X_Audio_rawAudio.canPlayType('audio/mp4') + X_Audio_rawAudio.canPlayType('audio/aac'),\r
  55               'weba' : X_Audio_rawAudio.canPlayType('audio/webm; codecs="vorbis"')\r
  56                 };\r
  57                 (function( k, v ){\r
  58                         for( k in X_Audio_codecs ){\r
  59                                 if( X_EMPTY_OBJECT[ k ] ) continue;\r
  60                                 v = X_Audio_codecs[ k ];\r
  61                                 X_Audio_codecs[ k ] = v && v.split( 'no' ).join( '' );\r
  62                                 console.log( k + ' ' + X_Audio_codecs[ k ] );\r
  63                         };\r
  64                 })();\r
  65         } else {\r
  66                 // iOS3.2.3\r
  67                 X_Audio_codecs = {\r
  68               'mp3'  : X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  69               'ogg'  : 5 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ,\r
  70               'wav'  : X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  ),\r
  71               'aac'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  72               'm4a'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  73               'mp4'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
  74               'weba' : 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] // firefox4+(Gecko2+)\r
  75                 };\r
  76         };\r
  77         \r
  78         X_Audio_HTMLAudioWrapper = X_Audio_AbstractAudioBackend[ 'inherits' ](\r
  79                 'X.AV.HTML5AudioWrapper',\r
  80                 X_Class.POOL_OBJECT,\r
  81                 {\r
  82                         _playTime        : 0,\r
  83                         _closed          : true,\r
  84                         _loaded          : false,\r
  85                         _beginTime       : 0,\r
  86                         _playForDuration : 0,\r
  87                         _lastCurrentTime : 0,\r
  88                         _src             : '',\r
  89                         \r
  90                         'Constructor' : function( target, source, option ){\r
  91                                 var raw;\r
  92                                 \r
  93                                 this.target  = target || this;\r
  94                                 this._closed = false;\r
  95                                 \r
  96                                 this.setState( option );\r
  97 \r
  98                                 if( option[ 'useVideo' ] ){\r
  99                                         this[ '_rawObject' ]  = raw = document.createElement( 'video' );\r
 100                         raw.preload           = 'none'; // auto, metadata, none\r
 101                         //raw.autoplay = false, // no-auto\r
 102                         raw.loop              = false;\r
 103                         raw.muted             = false;\r
 104                         raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 105                         raw.style.cssText     = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 106                                         raw.controls          = false;\r
 107                                         raw.WebKitPlaysInline = true;\r
 108                                         raw.src               = source;\r
 109                                         //raw.onclick  = "alert('play');this.actualPlay();";\r
 110                                         document.body.appendChild( raw );\r
 111                                         //raw.load();\r
 112                                 } else {\r
 113                                         this[ '_rawObject' ] = X_Audio_rawAudio || new X_Audio_constructor( source );\r
 114                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 115                                         this[ '_rawObject' ].autobuffer = false;\r
 116                                         this._src = source;\r
 117                                 };\r
 118                                 \r
 119                                 this[ 'listen' ]( [\r
 120                                                 'loadstart', 'load', 'progress', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'play', 'pause', 'loadedmetadata',\r
 121                                                 'loadeddata', 'waiting', 'playing', 'canplay', 'canplaythrough', 'seeking', 'seeked', 'timeupdate', 'ended',\r
 122                                                 'ratechange', 'durationchange', 'volumechange' ], this.handleEventProxy );                              \r
 123 \r
 124                                 //document.body.appendChild( this[ '_rawObject' ] );\r
 125                                 this[ '_rawObject' ].autoplay = false;\r
 126 \r
 127                                 if( X_Audio_rawAudio === this[ '_rawObject' ] ){\r
 128                                         if( X_Audio_HTMLAudioWrapper_badOperaAndroid ){\r
 129                                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( 12 );\r
 130                                                 X_EventDispatcher_toggleAllEvents( this, false );\r
 131                                                 this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 132                                                 //X_EventDispatcher_toggleAllEvents( this, true );\r
 133                                         } else {\r
 134                                                 X_Audio_rawAudio.src = source;\r
 135                                         };\r
 136 \r
 137                                         //this[ '_rawObject' ] = new X_Audio_constructor( X_URL_toAbsolutePath( source ) );\r
 138                                         /*!X_Audio_Sprite_needTouchFirst && */ X_Audio_rawAudio.load(); // 要る?\r
 139                                         X_Audio_rawAudio = null;\r
 140                                 };\r
 141 \r
 142                                 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE );\r
 143                         },\r
 144                         \r
 145                         handleEvent : function( e ){\r
 146                                 switch( e.type ){\r
 147 \r
 148                                         case X_EVENT_KILL_INSTANCE :\r
 149                                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 150                                                 // http://ingaouhou.com/archives/3633\r
 151                                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 152                                                 this.playing && this.actualPause();\r
 153                                                 delete this._closed;\r
 154                                                 delete this._loaded;\r
 155                                                 \r
 156                                                 this[ '_rawObject' ].src = '';\r
 157                                                 this[ '_rawObject' ].load();\r
 158                                                 \r
 159                                                 // removeChild for video\r
 160                                                 break;\r
 161                                 };\r
 162                         },\r
 163                         /*\r
 164                          * http://uguisu.skr.jp/html/table3.html\r
 165                          */\r
 166                         handleEventProxy : function( e ){\r
 167                                 var type, loaded, end, now;\r
 168                                 \r
 169                                 X_Audio_HTMLAudioWrapper_badOperaAndroid && alert( e.type );\r
 170                                 \r
 171                                 // global に公開\r
 172                                 window[ '__rawAudio' ] = this[ '_rawObject' ];\r
 173                                 \r
 174                                 /* X_Audio_HTMLAudioWrapper_ieMobile9Fix && */ e.type !== 'timeupdate' && console.log( e.type );\r
 175                                 \r
 176                                 switch( e.type ){\r
 177                                         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
 178                                                 break;\r
 179                                         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
 180                                                 console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 181                                                 // iem9 で常に0 this[ '_rawObject' ].networkState;\r
 182                                                 // 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
 183                                                 //console.log( 'buffered.end ' + this[ '_rawObject' ].buffered && this[ '_rawObject' ].buffered.end(0) ); \r
 184                                                 break;\r
 185                                         \r
 186                                         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
 187                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration === 0 ){\r
 188                                                         //console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 189                                                         this._playForDuration = 1;\r
 190                                                         this[ '_rawObject' ].play();\r
 191                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 192                                                         return;\r
 193                                                 };\r
 194                                         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
 195                                         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
 196                                         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
 197                                                 if( X_Audio_HTMLAudioWrapper_durationFix && this._playForDuration !== 2 ) return;\r
 198                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 199                                                 break;\r
 200         \r
 201                                         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
 202                                                 // Android2 で ready 扱い?\r
 203                                         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
 204                                                 // iOS で ready 扱い\r
 205                                         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
 206                                         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
 207                                                 break;\r
 208                                                 \r
 209                                         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
 210                                                 type = X_EVENT_ERROR;\r
 211                                                 break;\r
 212                                         \r
 213                                         case 'playing' :        //      再生が開始された場合に発生\r
 214                                                 if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 215                                                         this._playTime  = X_Timer_now();\r
 216                                                 };\r
 217                                                 type = X_EVENT_MEDIA_PLAYING;\r
 218                                         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
 219                                         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
 220                                         case 'seeked' :         //      シークがfalseに変化した場合に発生\r
 221                                         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
 222                                         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
 223                                                 if( this._playForDuration === 1 ) return;\r
 224                                                 break;\r
 225                                                 \r
 226                                         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
 227                                                 type = X_EVENT_MEDIA_WAITING;\r
 228                                         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
 229                                                 type = type || X_EVENT_MEDIA_SEEKING;\r
 230                                                 if( this._playForDuration === 1 ) return;\r
 231                                                 break;\r
 232                                                 \r
 233                                         case 'ended' :\r
 234                                                 if( !this._closed && this.autoLoop ){\r
 235                                                         if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){\r
 236                                                                 this.looped = true;\r
 237                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 238                                                                 this.actualPlay();\r
 239                                                         };\r
 240                                                         return;\r
 241                                                 };\r
 242                                                 type = X_EVENT_MEDIA_ENDED;\r
 243                                                 this.seekTime = 0;\r
 244                                                 delete this.playing;\r
 245                                                 break;\r
 246         \r
 247                                         // TODO firefox で 短い音声でtimeupdate, ended が発火しない\r
 248                                         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
 249                                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix ){\r
 250                                                         if( this._playForDuration === 1 ){\r
 251                                                                 console.log( 'tu ' + this[ '_rawObject' ].duration );\r
 252                                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 253                                                                         this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 254                                                                         this._playForDuration = 2;\r
 255                                                         loaded = true;\r
 256                                                         //console.log( 'durationFix が完了' + this.duration );\r
 257                                                         break;\r
 258                                                                 } else {\r
 259                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000; // 必要！\r
 260                                                                         return;\r
 261                                                                 };\r
 262                                                         } else\r
 263                                                         if( this[ '_rawObject' ].currentTime === this._lastCurrentTime ){\r
 264                                                                 //this.target[ 'dispatch' ]( 'seeking' );\r
 265                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 266                                                                 return;\r
 267                                                         };\r
 268                                                         this._lastCurrentTime = this[ '_rawObject' ].currentTime;\r
 269                                                 };\r
 270                                                 this.duration = this.duration || this[ '_rawObject' ].duration * 1000;\r
 271 \r
 272                                     if( this.playing ){\r
 273                                         end = X_AudioWrapper_getEndTime( this );\r
 274                                         now = this.getActualCurrentTime();\r
 275                                         console.log( now + ' / ' + end );\r
 276                                         if( 0 + end <= 0 + now ){ // なぜか iem9 で必要,,,\r
 277                                                 if( this.autoLoop ){\r
 278                                                         if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){\r
 279                                                                 this.looped = true;\r
 280                                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 281                                                                 this.actualPlay();\r
 282                                                         };\r
 283                                                 } else {\r
 284                                                         this.actualPause();\r
 285                                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 286                                                 };\r
 287                                                 return;\r
 288                                         };\r
 289                                     } else {\r
 290                                         return;\r
 291                                     };\r
 292                                     type = X_EVENT_MEDIA_PLAYING;\r
 293                                                 break;\r
 294                                                 \r
 295                                         case 'durationchange' : // duration属性が更新された場合に発生\r
 296                                                 \r
 297                                                 if( !X_Audio_HTMLAudioWrapper_durationFix ){\r
 298                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 299                                                 } else\r
 300                                                 // Desktop Opera では Infinity, IEM9 では NaN\r
 301                                                 if( !this.duration && X_Type_isFinite( this[ '_rawObject' ].duration ) ){\r
 302                                                         \r
 303                                                         //console.log( this[ '_rawObject' ].duration );\r
 304                                                         \r
 305                                                         this.duration = this[ '_rawObject' ].duration * 1000;\r
 306                                                         \r
 307                                                         if( this._playForDuration === 0 ) this._playForDuration = 2;\r
 308                                                         \r
 309                                                         if( this._playForDuration === 1 ){\r
 310                                                                 this._playForDuration = 2;\r
 311                                                                 \r
 312                                                                 console.log( 'Loaded ' + this._loaded );\r
 313                                                                 \r
 314                                                                 if( this._loaded ){\r
 315                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;\r
 316                                                                         console.log( '設定 ' + this._beginTime );\r
 317                                                                         return;\r
 318                                                                 };\r
 319 \r
 320                                                 loaded = true;\r
 321                                                 console.log( 'durationFix が完了' + this.duration );\r
 322                                                 \r
 323                                                 if( this.autoplay ){\r
 324                                                                         this[ '_rawObject' ].currentTime = this._beginTime / 1000;      \r
 325                                                 } else {\r
 326                                                         // Opera12.17 WinXP で勝手に再生される不具合\r
 327                                                         // これで一応再生は止まる、、、\r
 328                                                                         this[ '_rawObject' ].src = '';\r
 329                                                                         //this[ '_rawObject' ].load();                                          \r
 330                                                 };\r
 331                                                         };\r
 332                                                         \r
 333                                                 };\r
 334                                                 break;\r
 335                                         \r
 336                                 };\r
 337                                 \r
 338                                 \r
 339                                 if( !this._loaded && ( loaded || e.type === X_Audio_HTMLAudio_playTrigger || e.type === 'loadeddata' ) ){\r
 340                                         this.autoplay && X_Timer_once( 16, this, this.play );\r
 341                                         this._loaded = true;\r
 342                                         this.target[ 'asyncDispatch' ]( X_EVENT_READY );\r
 343                                         console.log( 'Loaded! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 344                                         return;\r
 345                                 };\r
 346                                 \r
 347                                 if( !loaded && type ){\r
 348                                         this.target[ 'dispatch' ]( type );\r
 349                                         type === X_EVENT_ERROR && this[ 'kill' ]();\r
 350                                 };\r
 351                         },\r
 352 \r
 353                         actualPlay : function(){\r
 354                                 var begin, end;\r
 355                                 \r
 356                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 357                                 if( this._closed ) return;\r
 358                                 if( !this._loaded && !X_Audio_HTMLAudioWrapper_ieMobile9Fix /* && !X_Audio_Sprite_inTouchAction */ ){\r
 359                         this.autoplay = true;\r
 360                         return;\r
 361                                 };\r
 362                                 \r
 363                                 if( X_Audio_HTMLAudioWrapper_ieMobile9Fix && this._playForDuration === 0 ){\r
 364                                         console.log( 'DurationFix開始 - ' + this[ '_rawObject' ].duration );\r
 365                                         this._playForDuration = 1;\r
 366                                 };\r
 367 \r
 368                                 end   = X_AudioWrapper_getEndTime( this );\r
 369                                 begin = this._beginTime = X_AudioWrapper_getStartTime( this, end, true );\r
 370 \r
 371                     if( X_Audio_HTMLAudioWrapper_shortPlayFix ){\r
 372                         begin -= ( end - begin > 1000 ) ? 200 : 400;\r
 373                         begin  = begin < 0 ? 0 : begin;\r
 374                     };\r
 375 \r
 376                                 if( !this[ '_rawObject' ].src ){\r
 377                                         this._beginTime = begin;\r
 378                                         this[ '_rawObject' ].src = this._src;\r
 379                                         delete this._playForDuration;\r
 380                                 };\r
 381 \r
 382                             if( !this.playing ){\r
 383                                     if( X_UA[ 'Chrome' ] ){ // [CHROME][FIX] volume TODO どの version で 修正される？\r
 384                                         // [!] delay\r
 385                                         X_Timer_once( 0, this, this._fixForChrome );\r
 386                                         this[ '_rawObject' ].volume = 0;\r
 387                                     } else {\r
 388                                         this[ '_rawObject' ].volume = X_Audio_HTMLAudioWrapper_ieMobile9Fix ? 1 : this.gain;\r
 389                                     };\r
 390                                 this[ '_rawObject' ].play();\r
 391                                 this.playing = true;\r
 392                             } else\r
 393                             if( X_UA[ 'Gecko' ] ){\r
 394                                 // Gecko PC + Android でseek時に再生がしばしば止まる問題の修正\r
 395                                 this[ '_rawObject' ].play();\r
 396                             };\r
 397                             \r
 398                                 //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 399                                 //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
 400                                 //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
 401                                 this[ '_rawObject' ].currentTime = this._lastCurrentTime = begin / 1000 | 0;\r
 402 \r
 403                             console.log( '[HTMLAudio] play ' + begin + ' -> ' + end );\r
 404                     \r
 405                     if( X_Audio_HTMLAudioWrapper_currentTimeFix ){\r
 406                         this._beginTime = begin;\r
 407                         this._playTime  = X_Timer_now();\r
 408                     };\r
 409 \r
 410                         },\r
 411                                 \r
 412                                 // [CHROME][FIX] volume\r
 413                                 _fixForChrome : X_UA[ 'Chrome' ] && function(){\r
 414                                         !this._closed && ( this[ '_rawObject' ].volume = this.gain );\r
 415                                 },\r
 416                         \r
 417                         actualPause : function(){\r
 418                                 if( !this.playing ) return;\r
 419                                 \r
 420                                 this.seekTime = this.getActualCurrentTime();\r
 421 \r
 422                                 delete this._playTime;\r
 423 \r
 424                         !this[ '_rawObject' ].error && this[ '_rawObject' ].pause();\r
 425                         \r
 426                         if( X_Audio_HTMLAudioWrapper_durationFix ){\r
 427                                 this[ '_rawObject' ].src = '';\r
 428                                 // load();\r
 429                         };\r
 430                         delete this.playing;\r
 431                         },\r
 432                         \r
 433                         getActualCurrentTime : function(){\r
 434                                 return ( X_Audio_HTMLAudioWrapper_currentTimeFix ?\r
 435                                                                 X_Timer_now() - this._playTime + this._beginTime :\r
 436                                                                 this[ '_rawObject' ].currentTime * 1000 | 0 );\r
 437                         },\r
 438                 /*\r
 439                 http://www.w3schools.com/tags/av_prop_error.asp\r
 440                 1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 441             2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 442             3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 443             4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 444             */                  \r
 445                         getActualError : function(){\r
 446                                 return this[ '_rawObject' ].error || 0;\r
 447                         },\r
 448                         \r
 449                         afterUpdateState : function( result ){\r
 450                                 if( result & 3 ){ // seek\r
 451                         this.actualPlay();\r
 452                                 } else\r
 453                                 if( result & 4 ){\r
 454                        this[ '_rawObject' ].volume = X_Audio_HTMLAudioWrapper_ieMobile9Fix ? 1 : this.gain;\r
 455                                 };                              \r
 456                         }\r
 457         \r
 458                 }\r
 459         );\r
 460         \r
 461         X_Audio_BACKENDS.push(\r
 462                 {\r
 463                         backendName : 'HTML Audio',\r
 464                         \r
 465                         canPlay : X_Audio_codecs,\r
 466                 /*\r
 467                  * 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
 468                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 469                  * \r
 470                  * 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
 471                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 472                  * 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
 473                  * \r
 474                  * IE9 の HTML5 Audio について\r
 475                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 476                  * 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
 477                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 478                  * 3.wav が不可\r
 479                  * \r
 480                  * IE9でHTML5 autio タグが無効になる\r
 481                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 482                  *  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
 483                  *  createElement等で動的生成すると、よろしくない\r
 484                  * \r
 485                  * media-can-play-wav-audio.html\r
 486                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 487                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 488                  * \r
 489                  * HTML5 audioタグ ブラウザ間の違い\r
 490                  * 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
 491                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 492                  *  - 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
 493                  */     \r
 494                         detect : function( proxy, source, ext ){\r
 495                                 /*\r
 496                                 var ok, mineType = 'audio/' + ext;\r
 497                                 switch( ext ){\r
 498                                         case 'mp3' :\r
 499                                                 ok = X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 500                                                 mineType = 'audio/mpeg';\r
 501                                                 //if( X_UA[ 'Android' ] && X_UA[ 'Gecko' ] ) mineType = '';\r
 502                                                 break;\r
 503                                         case 'ogg' :\r
 504                                                 ok = 15 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ;\r
 505                                                 if( X_UA[ 'AndroidBrowser' ] ) mineType = '';\r
 506                                                 break;\r
 507                                         case 'm4a' :\r
 508                                                 ok = X_UA[ 'IE' ] || X_UA[ 'WebKit' ];\r
 509                                                 mineType = 'audio/mp4';\r
 510                                                 break;\r
 511                                         case 'webm' :\r
 512                                                 ok = 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] ; // firefox4+(Gecko2+)\r
 513                                                 break;\r
 514                                         case 'wav' :\r
 515                                                 ok = X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ]  && X_UA[ 'Safari' ]  );\r
 516                                                 //mineType = 'audio/wav'; // audio/x-wav ?\r
 517                                                 break;\r
 518                                         default :\r
 519                                                 mineType = '';\r
 520                                 };\r
 521                                 \r
 522                                 if( !ok && mineType ){\r
 523                                         if( !X_Audio_rawAudio ) X_Audio_rawAudio = new Audio;\r
 524                                         ok = X_Audio_rawAudio.canPlayType( mineType );\r
 525                                         //console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 526                                 };\r
 527                                 console.log( 'HTML Audio ' + ok + ' ext:' + ext );\r
 528                                 */\r
 529                                 \r
 530                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 531                         },\r
 532                         \r
 533                         klass : X_Audio_HTMLAudioWrapper\r
 534                         \r
 535                 } );\r
 536 \r
 537 /*\r
 538  * \r
 539  * howler.js\r
 540  *     codecs = {\r
 541       mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 542       opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 543       ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 544       wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 545       aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 546       m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 547       mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 548       weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 549     };\r
 550  */\r
 551         \r
 552 };\r
 553 \r
 554 \r
 555 \r
 556 \r
 557 \r