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                         //  0:\r
  87                         //  1: touch 要求完了\r
  88                         //  2: touch による　play 中\r
  89                         //  4: duration 取得完了 currentTime へのセット\r
  90                         //  8: playing || loadeddata or canplaythrought\r
  91                         // 16: READY 発火済\r
  92                         _readyState       : 0,\r
  93                         \r
  94                         _touchRequested   : false,\r
  95                         _touched          : false,\r
  96                         \r
  97                         _currentFixStart  : 0,\r
  98                         _currentFixBegin  : 0,\r
  99 \r
 100                         _durationFixPhase : X_HTMLAudio_durationFix ? 1 : 0,\r
 101                         _durationFixSkip  : X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch,\r
 102                         _lastCurrentTime  : 0,\r
 103 \r
 104                         _shortPlayFixON   : false,\r
 105                         _shortPlayFixTime : 0,\r
 106                         \r
 107                         _endedFixON               : false,\r
 108                         \r
 109                         'Constructor' : function( disatcher, source, option ){\r
 110                                 var raw;\r
 111                                 \r
 112                                 this.disatcher = disatcher || this;\r
 113                                 this._closed   = false;\r
 114                                 this._src          = source;\r
 115                                 \r
 116                                 if( X_HTMLAudio_shortPlayFix ){\r
 117                                         this._shortPlayFixON = X_URL_getEXT( source ) === 'm4a';\r
 118                                 };\r
 119                                 \r
 120                                 this.setState( option );\r
 121 \r
 122                                 if( option[ 'useVideo' ] ){\r
 123                                         raw = document.createElement( 'video' );\r
 124                                         raw.preload                   = 'none'; // auto, metadata, none\r
 125                                         raw.autoplay              = false, // no-auto\r
 126                                         raw.loop                          = false;\r
 127                                         raw.muted                         = false;\r
 128                                         raw.crossorigin       = option[ 'crossorigin' ] || ''; //crossorigin: "anonymous", X.URL.isSameDomain() で切り替え\r
 129                                         raw.style.cssText         = 'position:absolute;bottom:0;left:-50px;width:100px;height:100px;opacity:0;';\r
 130                                         raw.controls              = false;\r
 131                                         raw.WebKitPlaysInline = true;\r
 132                                         X_elmBody.appendChild( raw );\r
 133                                 } else {\r
 134                                         raw = X_TEMP.rawAudio || new X_Audio_constructor( '' );\r
 135                                         // X_Doc_create( 'audio', { src : source } )[ 'appendTo' ]( X.Doc.body );\r
 136                                         //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
 137                                         \r
 138                                         if( X_TEMP.rawAudio ) delete X_TEMP.rawAudio;\r
 139                                 };\r
 140                                 \r
 141                                 this[ '_rawObject' ] = raw;\r
 142                                 \r
 143                                 this[ 'listen' ]( [\r
 144                                                 X_EVENT_KILL_INSTANCE,\r
 145                                                 X_HTMLAudio_playTrigger,\r
 146                                                 //'loadstart', 'load',\r
 147                                                 'progress', //'error',\r
 148                                                 // 'suspend', 'abort', 'emptied', 'stalled',\r
 149                                                 // 'play', 'pause', 'seeked', 'ratechange', 'volumechange',\r
 150                                                 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough',\r
 151                                                 'playing', 'waiting', 'seeking',\r
 152                                                 'durationchange', 'timeupdate', 'ended' ] );\r
 153 \r
 154                                 this[ 'listen' ]( [\r
 155                                                 'loadstart', 'load',\r
 156                                                 'progress', 'error',\r
 157                                                 'suspend', 'abort', 'emptied', 'stalled',\r
 158                                                 'play', 'pause', 'seeked', 'ratechange', 'volumechange',\r
 159                                                 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough',\r
 160                                                 'playing', 'waiting', 'seeking',\r
 161                                                 'durationchange', 'timeupdate', 'ended' ], this.onDebug );\r
 162 \r
 163                                 if( X_HTMLAudio_need1stTouch ){\r
 164                                         raw.src = source;\r
 165                                 } else {\r
 166                                         raw.preload  = 'auto';\r
 167                                         raw.autoplay = true; // Android 4.0-4.1.x で必要\r
 168                                         //raw.autobuffer = true;\r
 169                                         raw.src = source;\r
 170                                         raw.load(); // Android4.1.1 HTL21 では必要!\r
 171                                 };\r
 172                         },\r
 173                         \r
 174                         onDebug : function( e ){\r
 175                                 this.disatcher[ 'dispatch' ]( {\r
 176                                         type       : X_EVENT_DEBUG,\r
 177                                         'rawEvent' : e.type,\r
 178                                         current    : this.getActualCurrentTime() | 0,\r
 179                                         duration   : this[ '_rawObject' ].duration } );\r
 180                         },\r
 181                         \r
 182                         handleEvent : function( e ){\r
 183                                 var raw    = this[ '_rawObject' ],\r
 184                                         actualEnded = e.type === 'ended',\r
 185                                         ended       = actualEnded,\r
 186                                         ready,\r
 187                                         eventType, duration, end, now;\r
 188                                 \r
 189                                 // global に公開\r
 190                                 //window[ '__rawAudio' ] = this[ '_rawObject' ];\r
 191                                 \r
 192                                 e.type !== 'timeupdate' && console.log( ' > ' + e.type );\r
 193                                         \r
 194                                 switch( e.type ){\r
 195 \r
 196                                         case X_EVENT_KILL_INSTANCE :\r
 197                                                 // 【javascript】モバイル向けブラウザでも音を鳴らしたい【WebAudio】\r
 198                                                 // http://ingaouhou.com/archives/3633\r
 199                                                 // ・使い終わったインスタンスはload()しておくとやや安定\r
 200                                                 this.playing && this.actualPause();\r
 201                                                 delete this._closed;\r
 202                                                 delete this._loaded;\r
 203                                                 \r
 204                                                 raw.src = '';\r
 205                                                 raw.load();\r
 206                                                 \r
 207                                                 // removeChild for video\r
 208                                                 break;\r
 209 \r
 210                                         //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
 211                                                 //break;\r
 212                                         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
 213                                                 // console.log( e.loaded + ' ' + e.total * 100 + '%' );\r
 214                                                 // iem9 で常に0 raw.networkState;\r
 215                                                 // 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
 216                                                 //console.log( 'buffered.end ' + raw.buffered && raw.buffered.end(0) ); \r
 217                                                 break;\r
 218                                         \r
 219                                         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
 220                                         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
 221                                                 if( !this._endedFixON ){\r
 222                                                         ready = true;\r
 223                                                 };\r
 224                                         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
 225                                                 if( X_HTMLAudio_durationFix && !X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 226                                                         this.actualPlay();\r
 227                                                         raw.currentTime = 0; // 必要！\r
 228                                                 };\r
 229                                                 if( this._endedFixON ){\r
 230                                                         console.log( '▽ onEndedFix の終了 @' + e.type  );\r
 231                                                         this._endedFixON = false;\r
 232                                                         this.actualPlay();\r
 233                                                 };\r
 234                                         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
 235                                         case 'durationchange' : //  duration属性が更新された場合に発生\r
 236                                                 if( !this.duration || this.duration !== raw.duration * 1000 ){ // Blink28 duration が変わる\r
 237                                                         duration = raw.duration;\r
 238                                                 };\r
 239                                                 break;\r
 240         \r
 241                                         // 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
 242                                         case 'timeupdate' :      //     通常の再生が行われ現在の再生位置の変化が起こった場合に発生\r
 243                                                 if( this._durationFixPhase & 3 ){ // 1 or 2\r
 244                                                         duration = raw.duration;\r
 245                                                 } else\r
 246                                                 if( ( now = this.getActualCurrentTime() ) === this._lastCurrentTime ){\r
 247                                                         eventType = X_EVENT_MEDIA_WAITING;\r
 248                                                 } else {\r
 249                                                         this._lastCurrentTime = now; // *1 rm\r
 250 \r
 251                                                         if( this.playing ){\r
 252                                                                 end = X_Audio_getEndTime( this ) + this._shortPlayFixTime;\r
 253                                                                 //console.log( now + ' / ' + end );\r
 254                                                                 // || now < this._lastCurrentTime // loop した場合\r
 255                                                                 if( 0 + end <= 0 + now ){ // 0+ なぜか iem9 で必要,,,\r
 256                                                                         if( this.autoLoop ){\r
 257                                                                                 console.log( '☆★☆ 曲の最後に到達 @timeupdate now-end:' + ( now - end ) );\r
 258                                                                                 ended = true;\r
 259                                                                                 if( X_HTMLAudio_endedFixIOS ) actualEnded = true;\r
 260                                                                         } else {\r
 261                                                                                 this.actualPause();\r
 262                                                                                 eventType = X_EVENT_MEDIA_ENDED;\r
 263                                                                         };\r
 264                                                                 } else {\r
 265                                                                         eventType = X_EVENT_MEDIA_PLAYING;\r
 266                                                                         // *1 this._lastCurrentTime = now;\r
 267                                                                 };\r
 268                                                         };\r
 269                                                 };\r
 270                                                 break;\r
 271         \r
 272                                         //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
 273                                                 // Android2 で ready 扱い?\r
 274                                         //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
 275                                                 // iOS で ready 扱い\r
 276                                         //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
 277                                         //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
 278                                         //      break;\r
 279                                                 \r
 280                                         //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
 281                                                 // Opera12 src = '' で error が発生、無視する\r
 282                                                 // eventType = X_EVENT_ERROR;\r
 283                                                 //break;\r
 284                                                 \r
 285                                         case 'playing' :                //      再生が開始された場合に発生\r
 286                                                 if( X_HTMLAudio_volumeFix ){\r
 287                                                         raw.volume = this.gain;\r
 288                                                 };\r
 289                                                 //if( X_HTMLAudio_currentTimeFix && !this._currentFixStart ){\r
 290                                                         //this._currentFixStart = X_Timer_now(); // 正確な再生開始時間に補正\r
 291                                                 //};\r
 292                                                 eventType = !this._durationFixSkip && !this._endedFixON ? X_EVENT_MEDIA_PLAYING : X_EVENT_MEDIA_WAITING;\r
 293                                         //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
 294                                         //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
 295                                         //case 'seeked' : \r
 296                                         //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
 297                                         //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
 298                                                 break;\r
 299                                         \r
 300                                         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
 301                                                 eventType = X_EVENT_MEDIA_WAITING;\r
 302                                                 break;\r
 303                                         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
 304                                                 eventType = X_EVENT_MEDIA_SEEKING;\r
 305                                                 break;\r
 306                                 };\r
 307                                 \r
 308                                 // duration は Infinity, NaN, 0 の場合があるため、これを除外する\r
 309                                 if( 0 < duration && X_Type_isFinite( duration ) ){\r
 310                                         this.duration = duration * 1000;\r
 311 \r
 312                                         if( this._durationFixPhase === 2 ){\r
 313                                                 console.log( '▼ DurationFix の終了 @' + e.type );\r
 314                                                 this._durationFixPhase = 4;\r
 315                                                 \r
 316                                                 ready = true;\r
 317                                                 \r
 318                                                 if( this.autoplay || this._loaded ){\r
 319                                                         console.log( '☆ 再生 <- DurationFix の終了' );\r
 320                                                         this._durationFixSkip = false;\r
 321                                                         this.actualPlay();\r
 322                                                 } else\r
 323                                                 if( X_HTMLAudio_pauseFix ){\r
 324                                                         console.log( '☆ PAUSE <- DurationFix の終了' );\r
 325                                                         //raw.src = '';\r
 326                                                         //raw.load();\r
 327                                                         this.actualPause();                             \r
 328                                                 };\r
 329                                         } else\r
 330                                         if( this._durationFixPhase ){\r
 331                                                 this._durationFixPhase = 4;\r
 332                                         };                                      \r
 333                                 };\r
 334 \r
 335                                 this._loaded  = this._loaded || ready;\r
 336 \r
 337                                 //\r
 338                                 if( X_HTMLAudio_need1stTouch && !this._touchRequested ){ // !this._readyState\r
 339                                         if( e.type === X_HTMLAudio_playTrigger ){\r
 340                                                 this._touchRequested = true;\r
 341                                                 this._readyState     = 1;\r
 342                                                 this.disatcher[ 'asyncDispatch' ]( X_EVENT_MEDIA_CAN_TOUCH_LOAD );                                              \r
 343                                         };\r
 344                                 } else\r
 345                                 if( ended ){\r
 346                                         if( !this._closed && this.autoLoop ){\r
 347                                                 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){\r
 348                                                         this.looped = true;\r
 349                                                         this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );\r
 350                                                         ( 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
 351                                                         this.actualPlay(\r
 352                                                                 ( X_HTMLAudio_endedFixAOSP4 || X_HTMLAudio_endedFixCWV || X_HTMLAudio_endedFixIOS ) && actualEnded,\r
 353                                                                 ( X_HTMLAudio_endedFixAOSP3 || X_HTMLAudio_endedFixAOSP2 ) && actualEnded );\r
 354                                                 };\r
 355                                         } else {\r
 356                                                 this.seekTime = 0;\r
 357                                                 delete this.playing;\r
 358                                                 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );\r
 359                                         };\r
 360                                 } else\r
 361                                 if( this._loaded && this.duration && !this._ready ){\r
 362                                         this._ready = true;\r
 363                                         this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );\r
 364                                         this.autoplay && !X_HTMLAudio_need1stTouch && X_Timer_once( 16, this, this.actualPlay );\r
 365                                         console.log( '> Audio Loaded!! ' + e.type + ' d:' + ( this.duration | 0 ) );\r
 366                                 } else\r
 367                                 if( eventType ){\r
 368                                         this.disatcher[ 'dispatch' ]( eventType );\r
 369                                         // eventType === X_EVENT_ERROR && this[ 'kill' ]();\r
 370                                 };\r
 371                         },\r
 372 \r
 373                         actualPlay : function( forcePlay, forceReload ){\r
 374                                 var raw = this[ '_rawObject' ],\r
 375                                         e, begin, end;\r
 376                                 \r
 377                                 // もし kill 後に autoplayTimer で呼ばれても、_closed==true なので平気\r
 378                                 if( this._closed ) return;\r
 379                                 \r
 380                                 \r
 381                                 if( !raw.src ){ // X_HTMLAudio_pauseFix によって src が空になっている\r
 382                                         console.log( '○ 削除された audio.src の復帰' );\r
 383                                         raw.src = this._src;\r
 384                                         //return;\r
 385                                 };                              \r
 386                                 \r
 387                                 if( this._touchRequested && !this._touched ){ // this._readyState === 1\r
 388                                         e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];\r
 389                                         if( !e || !e[ 'pointerType' ] ){\r
 390                                                 alert( 'タッチイベント以外での play! ' + e.type );\r
 391                                                 return;\r
 392                                         };\r
 393                                         this._touched = true;\r
 394                                         this._readyState = 2;\r
 395                                 } else\r
 396                                 if( !this._ready && ( !X_HTMLAudio_durationFix || !X_HTMLAudio_need1stTouch ) ){ // this._readyState < 2\r
 397                                         this.autoplay = true;\r
 398                                         return;\r
 399                                 };\r
 400 \r
 401                                 if( X_HTMLAudio_durationFix && X_HTMLAudio_need1stTouch && this._durationFixPhase === 1 ){\r
 402                                         console.log( '▲ DurationFix の開始(タッチ用)' );\r
 403                                         this._durationFixPhase = 2;\r
 404                                 };\r
 405 \r
 406                                 end   = X_Audio_getEndTime( this );\r
 407                                 begin = X_Audio_getStartTime( this, end, true );\r
 408 \r
 409                                 this._lastCurrentTime = begin / 1000;\r
 410 \r
 411                                 if( this._shortPlayFixON ){\r
 412                                         this._shortPlayFixTime = ( 1000 < end - begin ) ? 200 : 400;\r
 413                                         if( this.duration < end + this._shortPlayFixTime ){\r
 414                                                 this._shortPlayFixTime = this.duration - end;\r
 415                                         };\r
 416                                 };\r
 417 \r
 418                                 if( this._durationFixSkip || this._endedFixON ){\r
 419                                         console.log( '☆ audio.play をスキップ ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) );\r
 420                                 } else {\r
 421                                         if( !this.playing ){\r
 422                                                 if( X_HTMLAudio_volumeFix ){\r
 423                                                         raw.volume = 0;\r
 424                                                 } else {\r
 425                                                         raw.volume = X_HTMLAudio_volumeEnabled ? this.gain : 1;\r
 426                                                 };\r
 427                                                 raw.play();\r
 428                                                 this.playing = true;\r
 429                                         } else\r
 430                                         if( X_HTMLAudio_needPlayForSeek || forcePlay ){\r
 431                                                 raw.play();\r
 432                                                 console.log( '[HTMLAudio] currentTime より先.' );\r
 433                                         };\r
 434                                         \r
 435                                         //http://himaxoff.blog111.fc2.com/blog-entry-97.html\r
 436                                         //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
 437                                         //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
 438 \r
 439                                         // iOS で duration が 0 の時に触ると error\r
 440                                         if( !X_HTMLAudio_durationFix || this.duration ) raw.currentTime = this._lastCurrentTime; // 2 < this._readyState\r
 441 \r
 442                                         console.log( '[HTMLAudio] play ' + begin + ' -> ' + end + ' crt:' + ( raw.currentTime | 0 ) + ' last:' + this._lastCurrentTime );\r
 443 \r
 444                                         if( forceReload || ( X_HTMLAudio_endedFixAOSP4 && raw.duration && raw.currentTime === raw.duration ) ){\r
 445                                                 raw.src          = '';\r
 446                                                 raw.src          = this._src;\r
 447                                                 this.playing     = false;\r
 448                                                 this._endedFixON = true;\r
 449                                                 console.log( '△ onEndedFix の開始' );\r
 450                                                 raw.currentTime  = this._lastCurrentTime;\r
 451                                                 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_WAITING );\r
 452                                                 X_HTMLAudio_endedFixAOSP2 && raw.load();\r
 453                                         };\r
 454                                 };\r
 455 \r
 456                                 if( X_HTMLAudio_currentTimeFix ){\r
 457                                         this._currentFixBegin = begin;\r
 458                                         this._currentFixStart = X_Timer_now();\r
 459                                 };\r
 460                         },\r
 461                         \r
 462                         actualPause : function(){\r
 463                                 var raw = this[ '_rawObject' ];\r
 464                                 \r
 465                                 console.log( '[HTMLAudio] pause' );\r
 466                                 \r
 467                                 this.seekTime = this.getActualCurrentTime();\r
 468 \r
 469                                 delete this._currentFixStart;\r
 470 \r
 471                                 !raw.error && raw.pause();\r
 472                                 \r
 473                                 if( X_HTMLAudio_pauseFix ){\r
 474                                         raw.src = '';\r
 475                                         if( X_HTMLAudio_durationFix ){\r
 476                                                 delete this._durationFixPhase;\r
 477                                                 delete this._durationFixSkip;\r
 478                                         };\r
 479                                 };\r
 480                                 delete this.playing;\r
 481                         },\r
 482                         \r
 483                         getActualCurrentTime : function(){\r
 484                                 return ( X_HTMLAudio_currentTimeFix ?\r
 485                                                         X_Timer_now() - this._currentFixStart + this._currentFixBegin :\r
 486                                                         this[ '_rawObject' ].currentTime * 1000 | 0 );\r
 487                         },\r
 488                 /*\r
 489                 http://www.w3schools.com/tags/av_prop_error.asp\r
 490                 1 = MEDIA_ERR_ABORTED - fetching process aborted by user\r
 491                 2 = MEDIA_ERR_NETWORK - error occurred when downloading\r
 492                 3 = MEDIA_ERR_DECODE - error occurred when decoding\r
 493                 4 = MEDIA_ERR_SRC_NOT_SUPPORTED - audio/video not supported\r
 494                 */                      \r
 495                         getActualError : function(){\r
 496                                 return this[ '_rawObject' ].error || 0;\r
 497                         },\r
 498                         \r
 499                         afterUpdateState : function( result ){\r
 500                                 if( result & 3 ){ // seek\r
 501                                         this.actualPlay();\r
 502                                 } else\r
 503                                 if( ( result & 4 ) && X_HTMLAudio_volumeEnabled ){\r
 504                                    this[ '_rawObject' ].volume = this.gain;\r
 505                                 };                              \r
 506                         }\r
 507         \r
 508                 }\r
 509         );\r
 510         \r
 511         X_HTMLAudio && X_Audio_BACKENDS.push(\r
 512                 {\r
 513                         backendID   : 2,\r
 514                         \r
 515                         backendName : 'HTMLAudio',\r
 516                         \r
 517                         canPlay : X_Audio_codecs,\r
 518                 /*\r
 519                  * 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
 520                  * https://developer.mozilla.org/ja/docs/Web/HTML/Supported_media_formats\r
 521                  * \r
 522                  * 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
 523                  * http://sothis.blog.so-net.ne.jp/2010-10-27\r
 524                  * 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
 525                  * \r
 526                  * IE9 の HTML5 Audio について\r
 527                  * http://kentablog.cluscore.com/2011/05/ie9-html5-audio.html\r
 528                  * 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
 529                  * 2.クロスドメインアクセスには、「clientaccesspolicy.xml」か「crossdomain.xml」が必要\r
 530                  * 3.wav が不可\r
 531                  * \r
 532                  * IE9でHTML5 autio タグが無効になる\r
 533                  * http://bbs.wankuma.com/index.cgi?mode=al2&namber=64886&KLOG=109\r
 534                  *  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
 535                  *  createElement等で動的生成すると、よろしくない\r
 536                  * \r
 537                  * media-can-play-wav-audio.html\r
 538                  * https://github.com/adobe/webkit/blob/master/LayoutTests/media/media-can-play-wav-audio.html\r
 539                  * testExpected("audio.canPlayType('audio/wav; codecs=1')", "probably");\r
 540                  * \r
 541                  * HTML5 audioタグ ブラウザ間の違い\r
 542                  * 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
 543                  *  - volume, muted iPhone(iOS4-6)、Android(2.3.6)では動作せず。\r
 544                  *  - 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
 545                  */     \r
 546                         detect : function( proxy, source, ext ){\r
 547                                 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );\r
 548                         },\r
 549                         \r
 550                         klass : X_HTMLAudio\r
 551                         \r
 552                 } );\r
 553 \r
 554 /*\r
 555  * \r
 556  * howler.js\r
 557  *       codecs = {\r
 558           mp3: !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, ''),\r
 559           opus: !!audioTest.canPlayType('audio/ogg; codecs="opus"').replace(/^no$/, ''),\r
 560           ogg: !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, ''),\r
 561           wav: !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, ''),\r
 562           aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),\r
 563           m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 564           mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),\r
 565           weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '')\r
 566         };\r
 567  */\r
 568         \r
 569 };\r
 570 \r
 571 \r
 572 \r
 573 \r
 574 \r