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  * Windows 版 Safari は QuickTime のインストールが必要\r
   7  * \r
   8  * 1. iOS4(iPod 2G) で ended に達すると音が鳴らなくなる fix で解決\r
   9  * 2. iOS6(iPod 4G) で ended に達すると音が鳴らなくなる fix で頻度が改善\r
  10  * 3. WP7(IS12T) で最後の方にある音が鳴らない? mp3 cbr を使えばいい? 裏に回っても音が鳴り続ける\r
  11  * 4. Android 3.x で ended に達すると音が鳴らなくなる -> リロード(audio.src='';audio.sr=src)で解決\r
  12  * 5. Android 2.x で ended に達すると音が鳴らなくなる -> リロード(audio.src='';audio.src=src;audio.load())でで解決\r
  13  * 6. Android 4.4.2- は ended に達した際に currentTime が変更できなくなり、リロードが必要になる\r
  14  */\r
  15 \r
  16 var X_HTMLAudio_playTrigger =\r
  17                 6 <= X_UA[ 'iOS' ] ? 'loadeddata' :\r
  18                 X_UA[ 'iOS' ] < 5  ? 'stalled' :\r
  19                 X_UA[ 'iOS' ]     ? 'suspend' :\r
  20                 X_UA[ 'Safari' ] < 4 ? 'canplaythrough' :\r
  21                 X_UA[ 'AndroidChromeBrowser' ] ? 'canplaythrough' :\r
  22                 // Android 2.3.5(SBM101SH) では stalled は発生しない,,,　ので必ず loadeddata もチェックする\r
  23                 X_UA[ 'AndroidBrowser' ] ? 'stalled' :\r
  24                 X_UA[ 'OperaMobile' ] || X_UA[ 'OperaTablet' ] ? 'loadeddata' :\r
  25                         'loadeddata', //'canplay',\r
  26         X_HTMLAudio,\r
  27         X_Audio_constructor         = X_UA[ 'Safari' ] < 4 ? function(a){ a = document.createElement( 'audio' ); return a; } : window[ 'Audio' ] || window.HTMLAudioElement,\r
  28         \r
  29         // ended が発生しない timeupdate 内で play() を呼ぶ (未検証) 不具合確認は iOS4,6\r
  30         X_HTMLAudio_endedFixIOS     = X_UA[ 'iOS' ] < 7,\r
  31         // Android 2.3.5 で ended 時に audio.src='';audio.src=src;audio.load() を実施。 2.3.4 でも問題なし。\r
  32         X_HTMLAudio_endedFixAOSP2   = X_UA[ 'AndroidBrowser' ] < 3,\r
  33         // Android 3.1 で ended 時に src='';src=src を実施。\r
  34         X_HTMLAudio_endedFixAOSP3   = !X_HTMLAudio_endedFixAOSP2 && X_UA[ 'AndroidBrowser' ] < 4,\r
  35         // ended 時に play() を実施, currentTime が duration に張り付き更新されなければ  src='';src=src を実施。\r
  36         X_HTMLAudio_endedFixAOSP4   = !X_UA[ 'AndroidChromeBrowser' ] && 4 <= X_UA[ 'AndroidBrowser' ],\r
  37         \r
  38         // Opera Mobile 12 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
  39         X_HTMLAudio_currentTimeFix  = !!X_UA[ 'OperaMobile' ] || !!X_UA[ 'OperaTablet' ],\r
  40         // Android1.6+MobileOpera12では無理っぽい、、、\r
  41         X_HTMLAudio_badOperaAndroid = X_HTMLAudio_currentTimeFix && X_UA[ 'Android' ] < 2,\r
  42 \r
  43         X_HTMLAudio_volumeFix       = X_UA[ 'Chrome' ],\r
  44         /*\r
  45          * win opera12 volume, mute の変更が2度目以降できない\r
  46          */\r
  47         X_HTMLAudio_volumeEnabled   = !( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ) && !X_UA[ 'Opera' ],\r
  48         // Gecko PC + Android でseek時に再生がしばしば止まる問題の修正\r
  49         X_HTMLAudio_needPlayForSeek = X_UA[ 'Gecko' ],\r
  50         // \r
  51         X_HTMLAudio_pauseFix            = ( X_UA[ 'Windows' ] && 12 <= X_UA[ 'Opera' ] && 0 < ' XP XPSP2 2003|XP64'.indexOf( X_UA[ 'Windows' ] ) ), // XP + Opera12 のみ?\r
  52         /*\r
  53          * durationFix\r
  54          *  duration が取得できるタイミングが遅くそれまでは infinity(PC Opera12), NaN(WP9), 0(AndroidBrowser Chrome 系) が入っている\r
  55          * \r
  56          *   1. touch が不要の場合、自動で再生を開始して duration を取得するまで再生する\r
  57          *        -> 取得後に pause or 通常再生\r
  58          *   2. touch が必要な場合、タッチイベント内の audio.play() で duration 取得\r
  59          * \r
  60          *  PC Opera12\r
  61          *   1. loadeddata 等では duration が infinity で、再生後の durationchange 時に duration が判明する\r
  62          *   2. 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
  63          *   3. Opera12.17 Win32(XP) portable apps は勝手に再生が始まる、、、Win8+Opera では発生しない\r
  64          *        -> 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
  65          *        -> opera11、10.54 WinXP はまとも、、、 portable が怪しい??\r
  66          */\r
  67         X_HTMLAudio_need1stTouch        = X_UA[ 'iOS' ] || X_UA[ 'AndroidChromeBrowser' ] || ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),   \r
  68         X_HTMLAudio_durationFix     = ( X_UA[ 'Windows' ] && 12 <= X_UA[ 'Opera' ] ) || X_UA[ 'AndroidChromeBrowser' ] || ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ),\r
  69         \r
  70         X_HTMLAudio_shortPlayFix        = !X_UA[ 'AndroidChromeBrowser' ] && X_UA[ 'AndroidBrowser' ], // Android 4.1.1 でも遭遇(ただしm4a, mp3は優秀, oggはシークが乱れる)\r
  71         \r
  72         X_Audio_codecs;\r
  73 \r
  74 if( X_Audio_constructor && !X_HTMLAudio_badOperaAndroid ){\r
  75         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
  76         //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
  77         X_TEMP.rawAudio = new X_Audio_constructor( '' );\r
  78         \r
  79         // https://html5experts.jp/miyuki-baba/3766/\r
  80         // TODO Chrome for Android31 で HE-AAC が低速再生されるバグ\r
  81         // TODO Android4 標準ブラウザで ogg のシークが正しくない！\r
  82         if( X_TEMP.rawAudio.canPlayType ){\r
  83                 X_Audio_codecs = {\r
  84                   'mp3'  : X_TEMP.rawAudio.canPlayType('audio/mpeg'),\r
  85                   'opus' : X_TEMP.rawAudio.canPlayType('audio/ogg; codecs="opus"'),\r
  86                   'ogg'  : X_TEMP.rawAudio.canPlayType('audio/ogg; codecs="vorbis"'),\r
  87                   'wav'  : X_TEMP.rawAudio.canPlayType('audio/wav; codecs="1"'),\r
  88                   'aac'  : X_TEMP.rawAudio.canPlayType('audio/aac'),\r
  89                   'm4a'  : X_TEMP.rawAudio.canPlayType('audio/x-m4a') + X_TEMP.rawAudio.canPlayType('audio/m4a') + X_TEMP.rawAudio.canPlayType('audio/aac'),\r
  90                   'mp4'  : X_TEMP.rawAudio.canPlayType('audio/x-mp4') + X_TEMP.rawAudio.canPlayType('audio/mp4') + X_TEMP.rawAudio.canPlayType('audio/aac'),\r
  91                   'weba' : X_TEMP.rawAudio.canPlayType('audio/webm; codecs="vorbis"')\r
  92                 };\r
  93                 (function( X_Audio_codecs, k, v ){\r
  94                         for( k in X_Audio_codecs ){\r
  95                                 //if( X_EMPTY_OBJECT[ k ] ) continue;\r
  96                                 v = X_Audio_codecs[ k ];\r
  97                                 v = v && !!( v.split( 'no' ).join( '' ) );\r
  98                                 if( v ){\r
  99                                         console.log( k + ' ' + X_Audio_codecs[ k ] );\r
 100                                         X_Audio_codecs[ k ] = true;\r
 101                                 } else {\r
 102                                         delete X_Audio_codecs[ k ];\r
 103                                 };\r
 104                         };\r
 105                 })( X_Audio_codecs );\r
 106         } else {\r
 107                 // iOS3.2.3\r
 108                 X_Audio_codecs = {\r
 109                   'mp3'  : X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ] && X_UA[ 'Safari' ]  ),\r
 110                   'ogg'  : 5 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ,\r
 111                   'wav'  : X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ] && X_UA[ 'Safari' ]  ),\r
 112                   'aac'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
 113                   'm4a'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
 114                   'mp4'  : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],\r
 115                   'weba' : 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] // firefox4+(Gecko2+)\r
 116                 };\r
 117                 (function( X_Audio_codecs, k ){\r
 118                         for( k in X_Audio_codecs ){\r
 119                                 //if( X_EMPTY_OBJECT[ k ] ) continue;\r
 120                                 if( X_Audio_codecs[ k ] ){\r
 121                                         console.log( k + ' ' + X_Audio_codecs[ k ] );\r
 122                                         X_Audio_codecs[ k ] = true;\r
 123                                 } else {\r
 124                                         delete X_Audio_codecs[ k ];\r
 125                                 };\r
 126                         };\r
 127                 })( X_Audio_codecs );\r
 128         };\r
 129         \r
 130         X_HTMLAudio = X_Audio_AbstractAudioBackend[ 'inherits' ](\r
 131                 'X.AV.HTML5AudioWrapper',\r
 132                 X_Class.POOL_OBJECT,\r
 133                 {\r
 134                         _closed               : true,\r
 135                         _loaded               : false,\r
 136                         _ready            : false,              \r
 137                         _src                      : '',\r
 138                         \r
 139                         _currentFixStart  : 0,\r
 140                         _currentFixBegin  : 0,\r
 141 \r
 142                         _durationFixPhase : X_HTMLAudio_durationFix ? 1 : 0,\r
 143                         _durationFixSkip  : X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch,                       \r
 144                         _lastCurrentTime  : 0,\r
 145 \r
 146 \r
 147                         _shortPlayFixON   : false,\r
 148                         _shortPlayFixTime : 0,\r
 149                         \r
 150                         _endedFixON               : false,\r
 151                         \r
 152                         'Constructor' : function( target, source, option ){\r
 153                                 var raw;\r
 154                                 \r
 155                                 this.target  = target || this;\r
 156                                 this._closed = false;\r
 157                                 this._src       = source;\r
 158                                 \r
 159                                 if( X_HTMLAudio_shortPlayFix ){\r
 160                                         this._shortPlayFixON = X_URL_getEXT( source ) === 'm4a';\r
 161                                 };\r
 162                                 \r
 163                                 this.setState( option );\r
 164 \r
 165                                 if( option[ 'useVideo' ] ){\r
 166                                         raw = document.createElement( 'video' );\r
 167                                         raw.preload                   = 'none'; // auto, metadata, none\r
 168                                         raw.autoplay              = false, // no-auto\r
 169                                         raw.loop                          = false;\r
 170                                         raw.muted                         = false;\r
 171                                         raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 172                                         raw.style.cssText         = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 173                                         raw.controls              = false;\r
 174                                         raw.WebKitPlaysInline = true;\r
 175                                         raw.src                       = source;\r
 176                                         document.body.appendChild( raw );\r
 177                                 } else {\r
 178                                         raw = X_TEMP.rawAudio || new X_Audio_constructor( source );\r
 179                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 180                                         raw.autobuffer = raw.autoplay = false;\r
 181                                 };\r
 182                                 \r
 183                                 this[ '_rawObject' ] = raw;\r
 184                                 \r
 185                                 this[ 'listen' ]( [\r
 186                                                 X_EVENT_KILL_INSTANCE,\r
 187                                                 X_HTMLAudio_playTrigger,\r
 188                                                 //'loadstart', 'load',\r
 189                                                 'progress', 'error',\r
 190                                                 // 'suspend', 'abort', 'emptied', 'stalled',\r
 191                                                 // 'play', 'pause', 'seeked', 'ratechange', 'volumechange',\r
 192                                                 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough',\r
 193                                                 'playing', 'waiting', 'seeking',\r
 194                                                 'durationchange', 'timeupdate', 'ended' ] );\r
 195 \r
 196                                 if( X_TEMP.rawAudio ){\r
 197                                         raw.src = source;\r
 198                                         raw.load(); // 要る?\r
 199                                         X_TEMP.rawAudio = null;\r
 200                                 };\r
 201                         },\r
 202                         \r
 203                         handleEvent : function( e ){\r
 204                                 var raw    = this[ '_rawObject' ],\r
 205                                         _ended = e.type === 'ended',\r
 206                                         ended  = _ended,\r
 207                                         ready  = e.type === X_HTMLAudio_playTrigger,\r
 208                                         eventType, duration, end, now;\r
 209                                 \r
 210                                 // global に公開\r
 211                                 //window[ '__rawAudio' ] = this[ '_rawObject' ];\r
 212                                 \r
 213                                 e.type !== 'timeupdate' && console.log( ' > ' + e.type );\r
 214                                         \r
 215                                 switch( e.type ){\r
 216 \r
 217                                         case X_EVENT_KILL_INSTANCE :\r
 218                                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 219                                                 // http://ingaouhou.com/archives/3633\r
 220                                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 221                                                 this.playing && this.actualPause();\r
 222                                                 delete this._closed;\r
 223                                                 delete this._loaded;\r
 224                                                 \r
 225                                                 raw.src = '';\r
 226                                                 raw.load();\r
 227                                                 \r
 228                                                 // removeChild for video\r
 229                                                 break;\r
 230 \r
 231                                         //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
 232                                                 //break;\r
 233                                         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
 234                                                 console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 235                                                 // iem9 で常に0 raw.networkState;\r
 236                                                 // 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
 237                                                 //console.log( 'buffered.end ' + raw.buffered && raw.buffered.end(0) ); \r
 238                                                 break;\r
 239                                         \r
 240                                         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
 241                                                 if( !this._endedFixON ){\r
 242                                                         ready = true;\r
 243                                                 };\r
 244                                         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
 245                                                 if( X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 246                                                         console.log( '▲ DurationFix の開始 @' + e.type );\r
 247                                                         this._durationFixPhase = 2;\r
 248                                                         raw.play();\r
 249                                                         raw.currentTime = 0; // 必要！\r
 250                                                 };\r
 251                                         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
 252                                                 if( this._endedFixON ){\r
 253                                                         this._endedFixON = false;\r
 254                                                         this.actualPlay();\r
 255                                                         console.log( '▽ onEndedFix @' + e.type  );\r
 256                                                 };\r
 257                                         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
 258                                         case 'durationchange' : //  duration属性が更新された場合に発生\r
 259                                                 if( !this.duration ){\r
 260                                                         duration = raw.duration;\r
 261                                                 };\r
 262                                                 break;\r
 263         \r
 264                                         // TODO firefox で 短い音声でtimeupdate, ended が発火しない <- 最後の音に無音部分を追加する\r
 265                                         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
 266                                                 if( this._durationFixPhase & 3 ){ // 1 or 2\r
 267                                                         duration = raw.duration;\r
 268                                                 } else\r
 269                                                 if( raw.currentTime === this._lastCurrentTime ){\r
 270                                                         eventType = X_EVENT_MEDIA_WAITING;\r
 271                                                 } else {\r
 272                                                         this._lastCurrentTime = raw.currentTime;\r
 273 \r
 274                                                         if( this.playing ){\r
 275                                                                 end = X_AudioWrapper_getEndTime( this ) + this._shortPlayFixTime;\r
 276                                                                 now = this.getActualCurrentTime();\r
 277                                                                 //console.log( now + ' / ' + end );\r
 278                                                                 if( 0 + end <= 0 + now ){ // 0+ なぜか iem9 で必要,,,\r
 279                                                                         if( this.autoLoop ){\r
 280                                                                                 console.log( '☆★☆ 曲の最後に到達 @timeupdate' );\r
 281                                                                                 ended = true;\r
 282                                                                                 if( X_HTMLAudio_endedFixIOS ) _ended = true;\r
 283                                                                         } else {\r
 284                                                                                 this.actualPause();\r
 285                                                                                 eventType = X_EVENT_MEDIA_ENDED;\r
 286                                                                         };\r
 287                                                                 } else {\r
 288                                                                         eventType = X_EVENT_MEDIA_PLAYING;\r
 289                                                                 };\r
 290                                                         };\r
 291                                                 };\r
 292                                                 break;\r
 293         \r
 294                                         //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
 295                                                 // Android2 で ready 扱い?\r
 296                                         //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
 297                                                 // iOS で ready 扱い\r
 298                                         //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
 299                                         //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
 300                                         //      break;\r
 301                                                 \r
 302                                         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
 303                                                 // Opera12 src = '' で error が発生、無視する\r
 304                                                 // eventType = X_EVENT_ERROR;\r
 305                                                 break;\r
 306                                                 \r
 307                                         case 'playing' :                //      再生が開始された場合に発生\r
 308                                                 if( X_HTMLAudio_volumeFix ){\r
 309                                                         raw.volume = this.gain;\r
 310                                                 };\r
 311                                                 if( X_HTMLAudio_currentTimeFix ){\r
 312                                                         this._currentFixStart = X_Timer_now(); // 正確な再生開始時間に補正\r
 313                                                 };\r
 314                                                 eventType = !this._durationFixSkip && !this._endedFixON ? X_EVENT_MEDIA_PLAYING : X_EVENT_MEDIA_WAITING;\r
 315                                         //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
 316                                         //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
 317                                         //case 'seeked' : \r
 318                                         //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
 319                                         //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
 320                                                 break;\r
 321                                         \r
 322                                         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
 323                                                 eventType = X_EVENT_MEDIA_WAITING;\r
 324                                                 break;\r
 325                                         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
 326                                                 eventType = X_EVENT_MEDIA_SEEKING;\r
 327                                                 break;\r
 328                                 };\r
 329                                 \r
 330                                 // duration は Infinity, NaN, 0 の場合があるため、これを除外する\r
 331                                 if( 0 < duration && X_Type_isFinite( duration ) ){\r
 332                                         this.duration = duration * 1000;\r
 333 \r
 334                                         if( this._durationFixPhase === 2 ){\r
 335                                                 console.log( '▼ DurationFix の終了 @' + e.type );\r
 336                                                 this._durationFixPhase = 4;\r
 337                                                 \r
 338                                                 ready = true;\r
 339                                                 \r
 340                                                 if( this.autoplay || this._loaded ){\r
 341                                                         console.log( '☆ 再生 <- DurationFix の終了' );\r
 342                                                         this._durationFixSkip = false;\r
 343                                                         this.actualPlay();\r
 344                                                 } else\r
 345                                                 if( X_HTMLAudio_pauseFix ){\r
 346                                                         console.log( '☆ PAUSE <- DurationFix の終了' );\r
 347                                                         //raw.src = '';\r
 348                                                         //raw.load();\r
 349                                                         this.actualPause();                             \r
 350                                                 };\r
 351                                         } else\r
 352                                         if( this._durationFixPhase ){\r
 353                                                 this._durationFixPhase = 4;\r
 354                                         };                                      \r
 355                                 };\r
 356 \r
 357                                 this._loaded  = this._loaded || ready;\r
 358 \r
 359                                 // \r
 360                                 if( ended ){\r
 361                                         if( !this._closed && this.autoLoop ){\r
 362                                                 if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){\r
 363                                                         this.looped = true;\r
 364                                                         this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 365                                                         ( X_HTMLAudio_endedFixAOSP3 || X_HTMLAudio_endedFixAOSP4 || X_HTMLAudio_endedFixIOS ) && _ended && console.log( '☆★☆ 音声の継続用の play() @ended' );\r
 366                                                         this.actualPlay( ( X_HTMLAudio_endedFixAOSP4 || X_HTMLAudio_endedFixIOS ) && _ended, ( X_HTMLAudio_endedFixAOSP3 || X_HTMLAudio_endedFixAOSP2 ) && _ended );\r
 367                                                 };\r
 368                                                 // Android4.1.1 ended 後に曲の再生が継続できない\r
 369                                         } else {\r
 370                                                 this.seekTime = 0;\r
 371                                                 delete this.playing;\r
 372                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );                                                       \r
 373                                         };\r
 374                                 } else\r
 375                                 if( this._loaded && this.duration && !this._ready ){\r
 376                                         this._ready = true;\r
 377                                         this.autoplay && X_Timer_once( 16, this, this.play );\r
 378                                         this.target[ 'asyncDispatch' ]( X_EVENT_READY );\r
 379                                         console.log( '> Audio Loaded!! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 380                                 } else\r
 381                                 if( eventType ){\r
 382                                         this.target[ 'dispatch' ]( eventType );\r
 383                                         eventType === X_EVENT_ERROR && this[ 'kill' ]();\r
 384                                 };\r
 385                         },\r
 386 \r
 387                         actualPlay : function( forcePlay, forceReload ){\r
 388                                 var raw = this[ '_rawObject' ],\r
 389                                         begin, end;\r
 390                                 \r
 391                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 392                                 if( this._closed ) return;\r
 393                                 \r
 394                                 \r
 395                                 if( !raw.src ){ // X_HTMLAudio_pauseFix によって src が空になっている\r
 396                                         console.log( '○ 削除された audio.src の復帰' );\r
 397                                         raw.src = this._src;\r
 398                                         //return;\r
 399                                 };                              \r
 400                                 \r
 401                                 if( !this._ready && ( !X_HTMLAudio_durationFix || !X_HTMLAudio_need1stTouch ) ){\r
 402                                         this.autoplay = true;\r
 403                                         return;\r
 404                                 };\r
 405 \r
 406                                 if( X_HTMLAudio_durationFix && X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 407                                         console.log( '▲ DurationFix の開始(タッチ用)' );\r
 408                                         this._durationFixPhase = 2;\r
 409                                 };\r
 410 \r
 411                                 end   = X_AudioWrapper_getEndTime( this );\r
 412                                 begin = X_AudioWrapper_getStartTime( this, end, true );\r
 413 \r
 414                                 this._lastCurrentTime = begin / 1000;\r
 415 \r
 416                                 if( this._shortPlayFixON ){\r
 417                                         this._shortPlayFixTime = ( 1000 < end - begin ) ? 200 : 400;\r
 418                                         if( this.duration < end + this._shortPlayFixTime ){\r
 419                                                 this._shortPlayFixTime = this.duration - end;\r
 420                                         };\r
 421                                 };\r
 422 \r
 423                                 if( this._durationFixSkip || this._endedFixON ){\r
 424                                         console.log( '☆ audio.play をスキップ ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) );\r
 425                                 } else {\r
 426                                         if( !this.playing ){\r
 427                                                 if( X_HTMLAudio_volumeFix ){\r
 428                                                         raw.volume = 0;\r
 429                                                 } else {\r
 430                                                         raw.volume = X_HTMLAudio_volumeEnabled ? this.gain : 1;\r
 431                                                 };\r
 432                                                 raw.play();\r
 433                                                 this.playing = true;\r
 434                                         } else\r
 435                                         if( X_HTMLAudio_needPlayForSeek || forcePlay ){\r
 436                                                 raw.play();\r
 437                                                 console.log( '[HTMLAudio] currentTime より先.' );\r
 438                                         };\r
 439                                         \r
 440                                         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 441                                         //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
 442                                         //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
 443                                         raw.currentTime = this._lastCurrentTime;\r
 444                                         console.log( '[HTMLAudio] play ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) + ' last:' + this._lastCurrentTime );\r
 445                                         \r
 446                                         // Android4.0.5 で ended イベント時に currentTime が duration に張り付いたまま変更できない\r
 447                                         if( forceReload || ( raw.duration && raw.currentTime === raw.duration ) ){\r
 448                                                 console.log( '△ onEndedFix の開始' );\r
 449                                                 raw.src          = '';\r
 450                                                 raw.src          = this._src;\r
 451                                                 raw.currentTime  = this._lastCurrentTime;\r
 452                                                 this.playing     = false;\r
 453                                                 this._endedFixON = true;\r
 454                                                 this.target[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );                                                                                             \r
 455                                                 X_HTMLAudio_endedFixAOSP2 && raw.load();\r
 456                                         };                                                      \r
 457                                 };\r
 458 \r
 459                                 /* if( X_HTMLAudio_durationFix ){\r
 460                                         this._currentFixBegin = begin;\r
 461                                 } else */\r
 462                                 if( X_HTMLAudio_currentTimeFix ){\r
 463                                         this._currentFixBegin = begin;\r
 464                                         this._currentFixStart = X_Timer_now();\r
 465                                 };\r
 466                         },\r
 467                         \r
 468                         actualPause : function(){\r
 469                                 console.log( '[HTMLAudio] pause' );\r
 470                                 \r
 471                                 this.seekTime = this.getActualCurrentTime();\r
 472 \r
 473                                 delete this._currentFixStart;\r
 474 \r
 475                                 !this[ '_rawObject' ].error && this[ '_rawObject' ].pause();\r
 476                                 \r
 477                                 if( X_HTMLAudio_pauseFix ){\r
 478                                         this[ '_rawObject' ].src = '';\r
 479                                         if( X_HTMLAudio_durationFix ){\r
 480                                                 delete this._durationFixPhase;\r
 481                                                 delete this._durationFixSkip;\r
 482                                         };\r
 483                                 };\r
 484                                 delete this.playing;\r
 485                         },\r
 486                         \r
 487                         getActualCurrentTime : function(){\r
 488                                 return ( X_HTMLAudio_currentTimeFix ?\r
 489                                                         X_Timer_now() - this._currentFixStart + this._currentFixBegin :\r
 490                                                         this[ '_rawObject' ].currentTime * 1000 | 0 );\r
 491                         },\r
 492                 /*\r
 493                 http://www.w3schools.com/tags/av_prop_error.asp\r
 494                 1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 495                 2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 496                 3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 497                 4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 498                 */                      \r
 499                         getActualError : function(){\r
 500                                 return this[ '_rawObject' ].error || 0;\r
 501                         },\r
 502                         \r
 503                         afterUpdateState : function( result ){\r
 504                                 if( result & 3 ){ // seek\r
 505                                         this.actualPlay();\r
 506                                 } else\r
 507                                 if( ( result & 4 ) && X_HTMLAudio_volumeEnabled ){\r
 508                                    this[ '_rawObject' ].volume = this.gain;\r
 509                                 };                              \r
 510                         }\r
 511         \r
 512                 }\r
 513         );\r
 514         \r
 515         X_Audio_BACKENDS.push(\r
 516                 {\r
 517                         backendName : 'HTML Audio',\r
 518                         \r
 519                         canPlay : X_Audio_codecs,\r
 520                 /*\r
 521                  * 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
 522                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 523                  * \r
 524                  * 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
 525                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 526                  * 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
 527                  * \r
 528                  * IE9 の HTML5 Audio について\r
 529                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 530                  * 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
 531                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 532                  * 3.wav が不可\r
 533                  * \r
 534                  * IE9でHTML5 autio タグが無効になる\r
 535                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 536                  *  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
 537                  *  createElement等で動的生成すると、よろしくない\r
 538                  * \r
 539                  * media-can-play-wav-audio.html\r
 540                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 541                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 542                  * \r
 543                  * HTML5 audioタグ ブラウザ間の違い\r
 544                  * 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
 545                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 546                  *  - 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
 547                  */     \r
 548                         detect : function( proxy, source, ext ){\r
 549                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 550                         },\r
 551                         \r
 552                         klass : X_HTMLAudio\r
 553                         \r
 554                 } );\r
 555 \r
 556 /*\r
 557  * \r
 558  * howler.js\r
 559  *       codecs = {\r
 560           mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 561           opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 562           ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 563           wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 564           aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 565           m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 566           mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 567           weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 568         };\r
 569  */\r
 570         \r
 571 };\r
 572 \r
 573 \r
 574 \r
 575 \r
 576 \r