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 emded イベントは発しないので、timeupdate 時に currentTime で判断する\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. AOSP 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
  12  * 5. AOSP 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、但し 2.x 4.x より遅延が大きく 1 秒弱程度ある\r
  13  * 6. AOSP 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, 4.0, 4.1, 4.2, 4.3 で確認, play() で頻度低下\r
  14  * 7. Android 4.4.4 Chrome WebView は ended に達した際に play() が必要\r
  15  * 8. BlinkOpera32 Win8 は HTMLAudio が壊れている、WebAudio は mp3 がデコードに失敗、ogg が動作\r
  16  * \r
  17  * memo\r
  18  * 1. AOSP4.1 iframe 内の Audio は親に focus が移っても再生を継続する\r
  19  * 2. AOSP oggはシークが乱れる m4a, mp3 は優秀\r
  20  * \r
  21  * http://unolabo.boo.jp/archives/2011/06/13-iphone%E3%81%AEaudio%E5%91%A8%E3%82%8A%E3%81%AE%E3%83%A1%E3%83%A2.html\r
  22  * 【JS】iPhoneのAudio周りのメモ iOS4.0 と 4.2 の違い\r
  23  */\r
  24         /*\r
  25          * durationFix\r
  26          *  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(Android 標準ブラウザ ChromeWebView) が入っている\r
  27          * \r
  28          *   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
  29          *        -> 取得後に pause or 通常再生\r
  30          *   2. touch が必要な場合、タッチイベント内の audio.play() で duration 取得\r
  31          * \r
  32          *  PC Opera12\r
  33          *   1. loadeddata 等では duration が infinity で、再生後の durationchange 時に duration が判明する\r
  34          *   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
  35          *   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
  36          *        -> 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
  37          *        -> opera11、10.54 WinXP はまとも、、、 portable が怪しい??\r
  38          */\r
  39 \r
  40 var\r
  41         X_HTMLAudio,\r
  42         \r
  43         // 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
  44         X_HTMLAudio_endedFixIOS     = X_UA[ 'iOS' ] < 7,\r
  45         // 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
  46         X_HTMLAudio_endedFixAOSP2   = X_UA[ 'AOSP' ] < 3,\r
  47         // Android 3.1 で ended 時に src='';src=src を実施。\r
  48         X_HTMLAudio_endedFixAOSP3   = !X_HTMLAudio_endedFixAOSP2 && X_UA[ 'AOSP' ] < 4,\r
  49         // 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
  50         X_HTMLAudio_endedFixAOSP4   = 4 <= X_UA[ 'AOSP' ],\r
  51         // ended 時に play() を実施\r
  52         X_HTMLAudio_endedFixCWV     = X_UA[ 'ChromeWV' ] || ( X_UA[ 'Blink' ] && X_UA[ 'Android' ] ),\r
  53         \r
  54         // 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
  55         X_HTMLAudio_currentTimeFix  = !!X_UA[ 'OperaMobile' ] || !!X_UA[ 'OperaTablet' ],\r
  56 \r
  57         X_HTMLAudio_volumeFix       = X_UA[ 'Chrome' ],\r
  58         /*\r
  59          * win opera12 volume, mute の変更が2度目以降できない\r
  60          */\r
  61         X_HTMLAudio_volumeEnabled   = !( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ) && !X_UA[ 'Opera' ],\r
  62         // Gecko PC + Android でseek時に再生がしばしば止まる問題の修正\r
  63         X_HTMLAudio_needPlayForSeek = X_UA[ 'Gecko' ],\r
  64         // \r
  65         X_HTMLAudio_pauseFix            = 12 <= X_UA[ 'Opera' ] && 0 < ' XP XPSP2 2003|XP64'.indexOf( X_UA[ 'Windows' ] ), // XP + Opera12 のみ?\r
  66 \r
  67         X_HTMLAudio_need1stTouch        = X_UA[ 'iOS' ] || 4.2 <= X_UA[ 'AOSP' ] || X_UA[ 'ChromeWV' ] || X_UA[ 'WinPhone' ] || ( X_UA[ 'Blink' ] && X_UA[ 'Android' ] ),\r
  68         \r
  69         X_HTMLAudio_playTrigger     = ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ) ? 'canplay' : X_UA[ 'iOS' ] ? 'suspend' : X_UA[ 'Blink' ] ? 'stalled' : 'canplaythrough',\r
  70         \r
  71         X_HTMLAudio_durationFix     = X_UA[ 'iOS' ] || X_UA[ 'ChromeWV' ] || ( X_UA[ 'WinPhone' ] && X_UA[ 'IE9' ] ) || ( X_UA[ 'Windows' ] && 12 <= X_UA[ 'Opera' ] ),\r
  72         \r
  73         X_HTMLAudio_shortPlayFix        = X_UA[ 'AOSP' ]; // Android 4.1.1 でも遭遇\r
  74 \r
  75 if( X_Audio_constructor ){\r
  76         \r
  77         X_HTMLAudio = X_AudioBase[ 'inherits' ](\r
  78                 'X.HTMLAudio',\r
  79                 X_Class.POOL_OBJECT,\r
  80                 {\r
  81                         _closed               : true,\r
  82                         _loaded               : false,\r
  83                         _ready            : false,\r
  84                         _src                      : '',\r
  85                         \r
  86                         _touchRequested   : false,\r
  87                         _touched          : false,\r
  88                         \r
  89                         _currentFixStart  : 0,\r
  90                         _currentFixBegin  : 0,\r
  91 \r
  92                         _durationFixPhase : X_HTMLAudio_durationFix ? 1 : 0,\r
  93                         _durationFixSkip  : X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch,\r
  94                         _lastCurrentTime  : 0,\r
  95 \r
  96                         _shortPlayFixON   : false,\r
  97                         _shortPlayFixTime : 0,\r
  98                         \r
  99                         _endedFixON               : false,\r
 100                         \r
 101                         'Constructor' : function( disatcher, source, option ){\r
 102                                 var raw;\r
 103                                 \r
 104                                 this.disatcher = disatcher || this;\r
 105                                 this._closed   = false;\r
 106                                 this._src          = source;\r
 107                                 \r
 108                                 if( X_HTMLAudio_shortPlayFix ){\r
 109                                         this._shortPlayFixON = X_URL_getEXT( source ) === 'm4a';\r
 110                                 };\r
 111                                 \r
 112                                 this.setState( option );\r
 113 \r
 114                                 if( option[ 'useVideo' ] ){\r
 115                                         raw = document.createElement( 'video' );\r
 116                                         raw.preload                   = 'none'; // auto, metadata, none\r
 117                                         raw.autoplay              = false, // no-auto\r
 118                                         raw.loop                          = false;\r
 119                                         raw.muted                         = false;\r
 120                                         raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 121                                         raw.style.cssText         = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 122                                         raw.controls              = false;\r
 123                                         raw.WebKitPlaysInline = true;\r
 124                                         X_elmBody.appendChild( raw );\r
 125                                 } else {\r
 126                                         raw = X_TEMP.rawAudio || new X_Audio_constructor( '' );\r
 127                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 128                                         \r
 129                                         raw.preload  = 'auto';\r
 130                                         //if( X_UA[ 'AOSP' ] < 4.2 ){\r
 131                                                 raw.autoplay = true; //raw.autobuffer = true; // Android 4.0-4.1.x で必要\r
 132                                         //} else {\r
 133                                         //      raw.autoplay = raw.autobuffer = false;\r
 134                                         //};\r
 135                                         //raw.autoplay = raw.autobuffer = raw.loop = false; // loop を使えば ended で止まること回避できるかも 但し ended イベントが起きなくなる\r
 136                                         \r
 137                                         if( X_TEMP.rawAudio ) delete X_TEMP.rawAudio;\r
 138                                 };\r
 139                                 \r
 140                                 this[ '_rawObject' ] = raw;\r
 141                                 \r
 142                                 this[ 'listen' ]( [\r
 143                                                 X_EVENT_KILL_INSTANCE,\r
 144                                                 X_HTMLAudio_playTrigger,\r
 145                                                 //'loadstart', 'load',\r
 146                                                 'progress', 'error',\r
 147                                                 // 'suspend', 'abort', 'emptied', 'stalled',\r
 148                                                 // 'play', 'pause', 'seeked', 'ratechange', 'volumechange',\r
 149                                                 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough',\r
 150                                                 'playing', 'waiting', 'seeking',\r
 151                                                 'durationchange', 'timeupdate', 'ended' ] );\r
 152 \r
 153                                 this[ 'listen' ]( [\r
 154                                                 'loadstart', 'load',\r
 155                                                 'progress', 'error',\r
 156                                                 'suspend', 'abort', 'emptied', 'stalled',\r
 157                                                 'play', 'pause', 'seeked', 'ratechange', 'volumechange',\r
 158                                                 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough',\r
 159                                                 'playing', 'waiting', 'seeking',\r
 160                                                 'durationchange', 'timeupdate', 'ended' ], this.onDebug );\r
 161 \r
 162                                 raw.src = source;\r
 163                                 raw.load(); // Android4.1.1 HTL21 では必要!\r
 164                         },\r
 165                         \r
 166                         onDebug : function( e ){\r
 167                                 this.disatcher[ 'dispatch' ]( {\r
 168                                         type       : X_EVENT_DEBUG,\r
 169                                         'rawEvent' : e.type,\r
 170                                         current    : this.getActualCurrentTime() | 0,\r
 171                                         duration   : this[ '_rawObject' ].duration } );\r
 172                         },\r
 173                         \r
 174                         handleEvent : function( e ){\r
 175                                 var raw    = this[ '_rawObject' ],\r
 176                                         actualEnded = e.type === 'ended',\r
 177                                         ended       = actualEnded,\r
 178                                         ready,\r
 179                                         eventType, duration, end, now;\r
 180                                 \r
 181                                 // global に公開\r
 182                                 //window[ '__rawAudio' ] = this[ '_rawObject' ];\r
 183                                 \r
 184                                 e.type !== 'timeupdate' && console.log( ' > ' + e.type );\r
 185                                         \r
 186                                 switch( e.type ){\r
 187 \r
 188                                         case X_EVENT_KILL_INSTANCE :\r
 189                                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 190                                                 // http://ingaouhou.com/archives/3633\r
 191                                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 192                                                 this.playing && this.actualPause();\r
 193                                                 delete this._closed;\r
 194                                                 delete this._loaded;\r
 195                                                 \r
 196                                                 raw.src = '';\r
 197                                                 raw.load();\r
 198                                                 \r
 199                                                 // removeChild for video\r
 200                                                 break;\r
 201 \r
 202                                         //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
 203                                                 //break;\r
 204                                         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
 205                                                 // console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 206                                                 // iem9 で常に0 raw.networkState;\r
 207                                                 // 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
 208                                                 //console.log( 'buffered.end ' + raw.buffered && raw.buffered.end(0) ); \r
 209                                                 break;\r
 210                                         \r
 211                                         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
 212                                         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
 213                                                 if( !this._endedFixON ){\r
 214                                                         ready = true;\r
 215                                                 };\r
 216                                         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
 217                                                 if( X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 218                                                         console.log( '▲ DurationFix の開始 @' + e.type );\r
 219                                                         this._durationFixPhase = 2;\r
 220                                                         raw.play();\r
 221                                                         raw.currentTime = 0; // 必要！\r
 222                                                 };\r
 223                                                 if( this._endedFixON ){\r
 224                                                         console.log( '▽ onEndedFix の終了 @' + e.type  );\r
 225                                                         this._endedFixON = false;\r
 226                                                         this.actualPlay();\r
 227                                                 };\r
 228                                         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
 229                                         case 'durationchange' : //  duration属性が更新された場合に発生\r
 230                                                 if( !this.duration || this.duration !== raw.duration * 1000 ){ // Blink28 duration が変わる\r
 231                                                         duration = raw.duration;\r
 232                                                 };\r
 233                                                 break;\r
 234         \r
 235                                         // 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
 236                                         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
 237                                                 if( this._durationFixPhase & 3 ){ // 1 or 2\r
 238                                                         duration = raw.duration;\r
 239                                                 } else\r
 240                                                 if( ( now = this.getActualCurrentTime() ) === this._lastCurrentTime ){\r
 241                                                         eventType = X_EVENT_MEDIA_WAITING;\r
 242                                                 } else {\r
 243                                                         this._lastCurrentTime = now; // *1 rm\r
 244 \r
 245                                                         if( this.playing ){\r
 246                                                                 end = X_Audio_getEndTime( this ) + this._shortPlayFixTime;\r
 247                                                                 //console.log( now + ' / ' + end );\r
 248                                                                 // || now < this._lastCurrentTime // loop した場合\r
 249                                                                 if( 0 + end <= 0 + now ){ // 0+ なぜか iem9 で必要,,,\r
 250                                                                         if( this.autoLoop ){\r
 251                                                                                 console.log( '☆★☆ 曲の最後に到達 @timeupdate now-end:' + ( now - end ) );\r
 252                                                                                 ended = true;\r
 253                                                                                 if( X_HTMLAudio_endedFixIOS ) actualEnded = true;\r
 254                                                                         } else {\r
 255                                                                                 this.actualPause();\r
 256                                                                                 eventType = X_EVENT_MEDIA_ENDED;\r
 257                                                                         };\r
 258                                                                 } else {\r
 259                                                                         eventType = X_EVENT_MEDIA_PLAYING;\r
 260                                                                         // *1 this._lastCurrentTime = now;\r
 261                                                                 };\r
 262                                                         };\r
 263                                                 };\r
 264                                                 break;\r
 265         \r
 266                                         //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
 267                                                 // Android2 で ready 扱い?\r
 268                                         //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
 269                                                 // iOS で ready 扱い\r
 270                                         //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
 271                                         //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
 272                                         //      break;\r
 273                                                 \r
 274                                         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
 275                                                 // Opera12 src = '' で error が発生、無視する\r
 276                                                 // eventType = X_EVENT_ERROR;\r
 277                                                 break;\r
 278                                                 \r
 279                                         case 'playing' :                //      再生が開始された場合に発生\r
 280                                                 if( X_HTMLAudio_volumeFix ){\r
 281                                                         raw.volume = this.gain;\r
 282                                                 };\r
 283                                                 //if( X_HTMLAudio_currentTimeFix && !this._currentFixStart ){\r
 284                                                         //this._currentFixStart = X_Timer_now(); // 正確な再生開始時間に補正\r
 285                                                 //};\r
 286                                                 eventType = !this._durationFixSkip && !this._endedFixON ? X_EVENT_MEDIA_PLAYING : X_EVENT_MEDIA_WAITING;\r
 287                                         //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
 288                                         //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
 289                                         //case 'seeked' : \r
 290                                         //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
 291                                         //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
 292                                                 break;\r
 293                                         \r
 294                                         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
 295                                                 eventType = X_EVENT_MEDIA_WAITING;\r
 296                                                 break;\r
 297                                         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
 298                                                 eventType = X_EVENT_MEDIA_SEEKING;\r
 299                                                 break;\r
 300                                 };\r
 301                                 \r
 302                                 // duration は Infinity, NaN, 0 の場合があるため、これを除外する\r
 303                                 if( 0 < duration && X_Type_isFinite( duration ) ){\r
 304                                         this.duration = duration * 1000;\r
 305 \r
 306                                         if( this._durationFixPhase === 2 ){\r
 307                                                 console.log( '▼ DurationFix の終了 @' + e.type );\r
 308                                                 this._durationFixPhase = 4;\r
 309                                                 \r
 310                                                 ready = true;\r
 311                                                 \r
 312                                                 if( this.autoplay || this._loaded ){\r
 313                                                         console.log( '☆ 再生 <- DurationFix の終了' );\r
 314                                                         this._durationFixSkip = false;\r
 315                                                         this.actualPlay();\r
 316                                                 } else\r
 317                                                 if( X_HTMLAudio_pauseFix ){\r
 318                                                         console.log( '☆ PAUSE <- DurationFix の終了' );\r
 319                                                         //raw.src = '';\r
 320                                                         //raw.load();\r
 321                                                         this.actualPause();                             \r
 322                                                 };\r
 323                                         } else\r
 324                                         if( this._durationFixPhase ){\r
 325                                                 this._durationFixPhase = 4;\r
 326                                         };                                      \r
 327                                 };\r
 328 \r
 329                                 this._loaded  = this._loaded || ready;\r
 330 \r
 331                                 //\r
 332                                 if( X_HTMLAudio_need1stTouch && !this._touchRequested ){\r
 333                                         if( e.type === X_HTMLAudio_playTrigger ){\r
 334                                                 this._touchRequested = true;\r
 335                                                 this.disatcher[ 'asyncDispatch' ]( X_EVENT_MEDIA_CAN_TOUCH_LOAD );                                              \r
 336                                         };\r
 337                                 } else\r
 338                                 if( ended ){\r
 339                                         if( !this._closed && this.autoLoop ){\r
 340                                                 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){\r
 341                                                         this.looped = true;\r
 342                                                         this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 343                                                         ( X_HTMLAudio_endedFixAOSP3 || X_HTMLAudio_endedFixAOSP4 || X_HTMLAudio_endedFixCWV || X_HTMLAudio_endedFixIOS ) && actualEnded && console.log( '☆★☆ 音声の継続用の play() @ended' );\r
 344                                                         this.actualPlay(\r
 345                                                                 ( X_HTMLAudio_endedFixAOSP4 || X_HTMLAudio_endedFixCWV || X_HTMLAudio_endedFixIOS ) && actualEnded,\r
 346                                                                 ( X_HTMLAudio_endedFixAOSP3 || X_HTMLAudio_endedFixAOSP2 ) && actualEnded );\r
 347                                                 };\r
 348                                         } else {\r
 349                                                 this.seekTime = 0;\r
 350                                                 delete this.playing;\r
 351                                                 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 352                                         };\r
 353                                 } else\r
 354                                 if( this._loaded && this.duration && !this._ready ){\r
 355                                         this._ready = true;\r
 356                                         this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );\r
 357                                         this.autoplay && !X_WebAudio_need1stTouch && X_Timer_once( 16, this, this.play );\r
 358                                         console.log( '> Audio Loaded!! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 359                                 } else\r
 360                                 if( eventType ){\r
 361                                         this.disatcher[ 'dispatch' ]( eventType );\r
 362                                         eventType === X_EVENT_ERROR && this[ 'kill' ]();\r
 363                                 };\r
 364                         },\r
 365 \r
 366                         actualPlay : function( forcePlay, forceReload ){\r
 367                                 var raw = this[ '_rawObject' ],\r
 368                                         e, begin, end;\r
 369                                 \r
 370                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 371                                 if( this._closed ) return;\r
 372                                 \r
 373                                 \r
 374                                 if( !raw.src ){ // X_HTMLAudio_pauseFix によって src が空になっている\r
 375                                         console.log( '○ 削除された audio.src の復帰' );\r
 376                                         raw.src = this._src;\r
 377                                         //return;\r
 378                                 };                              \r
 379                                 \r
 380                                 if( this._touchRequested && !this._touched ){\r
 381                                         e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];\r
 382                                         if( !e || !e[ 'pointerType' ] ){\r
 383                                                 alert( 'タッチイベント以外での play! ' + e.type );\r
 384                                                 return;\r
 385                                         };\r
 386                                         this._touched = true;\r
 387                                 } else\r
 388                                 if( !this._ready && ( !X_HTMLAudio_durationFix || !X_HTMLAudio_need1stTouch ) ){\r
 389                                         this.autoplay = true;\r
 390                                         return;\r
 391                                 };\r
 392 \r
 393                                 if( X_HTMLAudio_durationFix && X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 394                                         console.log( '▲ DurationFix の開始(タッチ用)' );\r
 395                                         this._durationFixPhase = 2;\r
 396                                 };\r
 397 \r
 398                                 end   = X_Audio_getEndTime( this );\r
 399                                 begin = X_Audio_getStartTime( this, end, true );\r
 400 \r
 401                                 this._lastCurrentTime = begin / 1000;\r
 402 \r
 403                                 if( this._shortPlayFixON ){\r
 404                                         this._shortPlayFixTime = ( 1000 < end - begin ) ? 200 : 400;\r
 405                                         if( this.duration < end + this._shortPlayFixTime ){\r
 406                                                 this._shortPlayFixTime = this.duration - end;\r
 407                                         };\r
 408                                 };\r
 409 \r
 410                                 if( this._durationFixSkip || this._endedFixON ){\r
 411                                         console.log( '☆ audio.play をスキップ ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) );\r
 412                                 } else {\r
 413                                         if( !this.playing ){\r
 414                                                 if( X_HTMLAudio_volumeFix ){\r
 415                                                         raw.volume = 0;\r
 416                                                 } else {\r
 417                                                         raw.volume = X_HTMLAudio_volumeEnabled ? this.gain : 1;\r
 418                                                 };\r
 419                                                 raw.play();\r
 420                                                 this.playing = true;\r
 421                                         } else\r
 422                                         if( X_HTMLAudio_needPlayForSeek || forcePlay ){\r
 423                                                 raw.play();\r
 424                                                 console.log( '[HTMLAudio] currentTime より先.' );\r
 425                                         };\r
 426                                         \r
 427                                         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 428                                         //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
 429                                         //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
 430 \r
 431                                         // iOS で duration が 0 の時に触ると error\r
 432                                         if( !X_HTMLAudio_durationFix || this.duration ) raw.currentTime = this._lastCurrentTime;\r
 433 \r
 434                                         console.log( '[HTMLAudio] play ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) + ' last:' + this._lastCurrentTime );\r
 435 \r
 436                                         if( forceReload || ( X_HTMLAudio_endedFixAOSP4 && raw.duration && raw.currentTime === raw.duration ) ){\r
 437                                                 raw.src          = '';\r
 438                                                 raw.src          = this._src;\r
 439                                                 this.playing     = false;\r
 440                                                 this._endedFixON = true;\r
 441                                                 console.log( '△ onEndedFix の開始' );\r
 442                                                 raw.currentTime  = this._lastCurrentTime;\r
 443                                                 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 444                                                 X_HTMLAudio_endedFixAOSP2 && raw.load();\r
 445                                         };\r
 446                                 };\r
 447 \r
 448                                 if( X_HTMLAudio_currentTimeFix ){\r
 449                                         this._currentFixBegin = begin;\r
 450                                         this._currentFixStart = X_Timer_now();\r
 451                                 };\r
 452                         },\r
 453                         \r
 454                         actualPause : function(){\r
 455                                 var raw = this[ '_rawObject' ];\r
 456                                 \r
 457                                 console.log( '[HTMLAudio] pause' );\r
 458                                 \r
 459                                 this.seekTime = this.getActualCurrentTime();\r
 460 \r
 461                                 delete this._currentFixStart;\r
 462 \r
 463                                 !raw.error && raw.pause();\r
 464                                 \r
 465                                 if( X_HTMLAudio_pauseFix ){\r
 466                                         raw.src = '';\r
 467                                         if( X_HTMLAudio_durationFix ){\r
 468                                                 delete this._durationFixPhase;\r
 469                                                 delete this._durationFixSkip;\r
 470                                         };\r
 471                                 };\r
 472                                 delete this.playing;\r
 473                         },\r
 474                         \r
 475                         getActualCurrentTime : function(){\r
 476                                 return ( X_HTMLAudio_currentTimeFix ?\r
 477                                                         X_Timer_now() - this._currentFixStart + this._currentFixBegin :\r
 478                                                         this[ '_rawObject' ].currentTime * 1000 | 0 );\r
 479                         },\r
 480                 /*\r
 481                 http://www.w3schools.com/tags/av_prop_error.asp\r
 482                 1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 483                 2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 484                 3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 485                 4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 486                 */                      \r
 487                         getActualError : function(){\r
 488                                 return this[ '_rawObject' ].error || 0;\r
 489                         },\r
 490                         \r
 491                         afterUpdateState : function( result ){\r
 492                                 if( result & 3 ){ // seek\r
 493                                         this.actualPlay();\r
 494                                 } else\r
 495                                 if( ( result & 4 ) && X_HTMLAudio_volumeEnabled ){\r
 496                                    this[ '_rawObject' ].volume = this.gain;\r
 497                                 };                              \r
 498                         }\r
 499         \r
 500                 }\r
 501         );\r
 502         \r
 503         X_HTMLAudio && X_Audio_BACKENDS.push(\r
 504                 {\r
 505                         backendID   : 2,\r
 506                         \r
 507                         backendName : 'HTMLAudio',\r
 508                         \r
 509                         canPlay : X_Audio_codecs,\r
 510                 /*\r
 511                  * 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
 512                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 513                  * \r
 514                  * 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
 515                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 516                  * 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
 517                  * \r
 518                  * IE9 の HTML5 Audio について\r
 519                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 520                  * 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
 521                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 522                  * 3.wav が不可\r
 523                  * \r
 524                  * IE9でHTML5 autio タグが無効になる\r
 525                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 526                  *  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
 527                  *  createElement等で動的生成すると、よろしくない\r
 528                  * \r
 529                  * media-can-play-wav-audio.html\r
 530                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 531                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 532                  * \r
 533                  * HTML5 audioタグ ブラウザ間の違い\r
 534                  * 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
 535                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 536                  *  - 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
 537                  */     \r
 538                         detect : function( proxy, source, ext ){\r
 539                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 540                         },\r
 541                         \r
 542                         klass : X_HTMLAudio\r
 543                         \r
 544                 } );\r
 545 \r
 546 /*\r
 547  * \r
 548  * howler.js\r
 549  *       codecs = {\r
 550           mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 551           opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 552           ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 553           wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 554           aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 555           m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 556           mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 557           weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 558         };\r
 559  */\r
 560         \r
 561 };\r
 562 \r
 563 \r
 564 \r
 565 \r
 566 \r