0.6.x/js/07_audio/10_XAudioSprite.js

   1 \r
   2 /*\r
   3  * http://uupaa.hatenablog.com/entry/2011/12/12/213233\r
   4  * Mobile Opera11 は Audio をサポートするがイベントが取れない\r
   5  * iframe 内で生成して、Audio Sprite の preset で再生できないか？\r
   6  */\r
   7 var X_Audio_Sprite_shouldUse        = window.HTMLAudioElement && ( X_UA.iOS || X_UA.AndroidBrowser || X_UA.OperaMobile || X_UA.OperaTablet ),\r
   8         X_Audio_Sprite_useVideoForMulti = 4 <= X_UA.AndroidBrowser && 534.3 < X_UA.AndroidBrowserWebkit, // ドスパラパッドはビデオのインライン再生が不可 \r
   9         X_Audio_Sprite_needTouchFirst   = !!X_UA.iOS || X_Audio_Sprite_useVideoForMulti,\r
  10         X_Audio_Sprite_inTouchAction    = false,\r
  11         X_Audio_Sprite_enableMultiTrack = !( X_UA.iOS && !X_Audio_WebAudio_context ) && !( X_UA.AndroidBrowser4 && X_UA.AndroidBrowserWebkit <= 534.3 ),\r
  12         X_Audio_Sprite_enableVolume     = window.HTMLAudioElement && ( !X_UA.iOS && !X_UA.AndroidBrowser && !X_UA.OperaMobile && !X_UA.OperaTablet ),\r
  13         X_Audio_Sprite_maxTracks        = !X_Audio_Sprite_enableMultiTrack ? 1 : X_Audio_Sprite_useVideoForMulti ? 2 : 9,\r
  14         X_Audio_Sprite_lengthSilence    = 10000, // 一番最初の無音部分の長さ\r
  15         X_Audio_Sprite_lengthDistance   = 5000,  // 音間の無音の長さ\r
  16         X_Audio_Sprite_uid              = 0,\r
  17         X_Audio_Sprite_members          = {},\r
  18         X_Audio_Sprite_TEMP             = {\r
  19                 presets     : {},\r
  20                 BGMs        : {},\r
  21                 tracks      : [],\r
  22                 pauseTracks : [], // X.Event.DEACTIVATE によって pause した再生中のトラックたち。\r
  23                 volume      : 1,\r
  24                 bgmTrack    : null,\r
  25                 bgmPosition : 0,\r
  26                 bgmName     : '',\r
  27                 bgmLooped   : false,\r
  28                 bgmPlaying  : false\r
  29         },\r
  30         X_Audio_Sprite_instance;\r
  31 \r
  32 X.Audio.Sprite = {\r
  33         \r
  34         shouldUse        : X_Audio_Sprite_shouldUse,\r
  35         \r
  36         needTouchFirst   : X_Audio_Sprite_needTouchFirst,\r
  37         \r
  38         enableMultiTrack : X_Audio_Sprite_enableMultiTrack,\r
  39         \r
  40         create : function( setting ){\r
  41                 // close()\r
  42                 if( X_Audio_Sprite_instance ){\r
  43                         X_Audio_Sprite_instance.close();\r
  44                 } else {\r
  45                         X_Audio_Sprite_instance = X_Class_override( new X.EventDispatcher(), X_Audio_Sprite_members );\r
  46                         X_ViewPort.listen( [ X.Event.VIEW_ACTIVATE, X.Event.VIEW_DEACTIVATE ], X_Audio_Sprite_instance, X_Audio_Sprite_handleEvent );\r
  47                 };\r
  48                 X_Audio_Sprite_instance.setup( setting );\r
  49                 return X_Audio_Sprite_instance;\r
  50                 \r
  51         }\r
  52 };\r
  53 \r
  54 // 再生が終わっているもの、終わりかけのものを探す\r
  55 // TODO 終わりかけのもの、と一番古いもの、どちらを再利用するか？これ以上に細かい実装を望む場合は X.Audio.Sprite は使わず自力で実装\r
  56 function X_Audio_Sprite_getTrackEnded(){\r
  57         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
  58                 l = tracks.length,\r
  59                 i = 0, track, state, last = 1 / 0, _last, index;\r
  60         \r
  61         for( ; i < l; ++i ){\r
  62                 track = tracks[ i ];\r
  63                 state = track.state();\r
  64                 if( !state.playing ) return track;\r
  65                 if( track === X_Audio_Sprite_TEMP.bgmTrack ) continue;\r
  66                 if( state.currentTime <= X_Audio_Sprite_lengthSilence + X_Audio_Sprite_lengthDistance ) return track;\r
  67                 _last = state.endTime - state.currentTime;\r
  68                 if( _last < last ){\r
  69                         last  = _last;\r
  70                         index = i;\r
  71                 };\r
  72         };\r
  73         return tracks[ index ];\r
  74 };\r
  75 \r
  76 /*\r
  77  * {\r
  78  *       urls      : [ 'xx.ogg', 'xx.mp3' ],\r
  79  *       numTracks : 3,\r
  80  *   useVideo  : false,\r
  81  *   volume    : 1,\r
  82  *       BGM_01 : [ '15.00', '45.500', true, '17.666', '50.999' ],\r
  83  *   BGM_02 : [ '56.00', '1:15.230', true ]\r
  84  * }\r
  85  */\r
  86 \r
  87 X_Audio_Sprite_members = {\r
  88                 \r
  89                 setup : function( setting ){\r
  90                         \r
  91                         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
  92                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
  93                                 presets = X_Audio_Sprite_TEMP.presets,\r
  94                                 urls    = setting[ 'urls' ],\r
  95                                 video   = setting[ 'useVideo' ],\r
  96                                 n       = video ? 1 : setting[ 'numTracks' ] || 1,\r
  97                                 option  = {\r
  98                                         volume    : setting[ 'volume' ] || 0.5,\r
  99                                         autoplay  : false,\r
 100                                         startTime : 0,\r
 101                                         endTime   : X_Audio_Sprite_lengthSilence,\r
 102                                         loop      : true\r
 103                                 },\r
 104                                 k, i, v, track;\r
 105                         \r
 106                         n = n <= X_Audio_Sprite_maxTracks ? n : X_Audio_Sprite_maxTracks;\r
 107                         \r
 108                         for( k in setting ){\r
 109                                 v = setting[ k ];\r
 110                                 if( X.Type.isArray( v ) && v !== urls){\r
 111                                         v = X.Object.cloneArray( v );\r
 112                                         for( i = v.length; i; ){\r
 113                                                 --i;\r
 114                                                 if( i !== 2 ) v[ i ] = X_AudioWrapper_timeStringToNumber( v[ i ] );\r
 115                                         };                                      \r
 116                                         if( v[ 2 ] ) bgms[ k ] = v;\r
 117                                         presets[ k ] = v;\r
 118                                 };\r
 119                         };\r
 120                         \r
 121                         for( i = 0; i < n; ++i ){\r
 122                                 if( video || ( i === 1 && X_Audio_Sprite_useVideoForMulti ) ){\r
 123                                         option[ 'useVideo' ] = true;\r
 124                                 };\r
 125                                 tracks.push( X.Audio.create( urls, X.Object.clone( option ) ) );\r
 126                         };\r
 127                         \r
 128                         tracks[ n - 1 ].listenOnce( [ 'backendfound', 'nobackend' ], this, X_Audio_Sprite_handleEvent );\r
 129                         \r
 130                         X_Audio_Sprite_instance.numTracks = n;\r
 131                 },\r
 132                 \r
 133                 close : function(){\r
 134                         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
 135                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
 136                                 presets = X_Audio_Sprite_TEMP.presets,\r
 137                                 k;\r
 138                         \r
 139                         while( tracks.length ){\r
 140                                 tracks.pop().kill();\r
 141                         };\r
 142                         \r
 143                         for( k in bgms ){\r
 144                                 delete bgms[ k ];\r
 145                         };\r
 146                         for( k in presets ){\r
 147                                 delete presets[ k ];\r
 148                         };\r
 149                         \r
 150                         X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 151                         X_Audio_Sprite_TEMP.bgmPosition = 0;\r
 152                         X_Audio_Sprite_TEMP.bgmName     = '';\r
 153                         X_Audio_Sprite_TEMP.bgmLooped   = false;\r
 154                         X_Audio_Sprite_TEMP.bgmPlaying  = false;\r
 155                 },\r
 156                 \r
 157                 load : function(){\r
 158                         var tracks = X_Audio_Sprite_TEMP.tracks,\r
 159                                 i = 0, l = tracks.length;\r
 160                         for( ; i < l; ++i ){\r
 161                                 X_AudioProxy_getAudioWrapper( tracks[ i ] )._rawObject.load();\r
 162                         };\r
 163                 },\r
 164                 \r
 165                 /*\r
 166                  * @return uid Number\r
 167                  */\r
 168                 play : function( name ){\r
 169                         var bgm     = X_Audio_Sprite_TEMP.bgmTrack,\r
 170                                 tracks  = X_Audio_Sprite_TEMP.tracks,\r
 171                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
 172                                 presets = X_Audio_Sprite_TEMP.presets,\r
 173                                 preset  = presets[ name ],\r
 174                                 i, k;\r
 175                         \r
 176                         if( preset ){\r
 177                                 if( bgms[ name ] ){\r
 178                                         if( name !== X_Audio_Sprite_TEMP.bgmName ){\r
 179                                                 // bgm変更\r
 180                                                 X_Audio_Sprite_TEMP.bgmName     = name;\r
 181                                                 X_Audio_Sprite_TEMP.bgmPosition = preset[ 0 ];\r
 182                                                 X_Audio_Sprite_TEMP.bgmPlaying  = true;\r
 183                                                 X_Audio_Sprite_TEMP.bgmLooped   = false;\r
 184                                         };\r
 185                                         if( bgm ){\r
 186                                                 track = bgm;\r
 187                                         } else\r
 188                                         if( 1 < tracks.length ){\r
 189                                                 track = X_Audio_Sprite_TEMP.bgmTrack = X_Audio_Sprite_getTrackEnded();\r
 190                                         } else {\r
 191                                                 track = X_Audio_Sprite_TEMP.bgmTrack = tracks[ 0 ];\r
 192                                         };\r
 193                                         \r
 194                                         if( track.listen( 'looped', this, X_Audio_Sprite_handleEvent ).isPlaying() ){\r
 195                                                 track\r
 196                                                         .state( {\r
 197                                                                 loop          : true,\r
 198                                                                 looped        : X_Audio_Sprite_TEMP.bgmLooped,\r
 199                                                                 currentTime   : X_Audio_Sprite_TEMP.bgmPosition,\r
 200                                                                 startTime     : preset[ 0 ],\r
 201                                                                 endTime       : preset[ 1 ],\r
 202                                                                 loopStartTime : preset[ 3 ],\r
 203                                                                 loopEndTime   : preset[ 4 ]\r
 204                                                         } );\r
 205                                         } else {\r
 206                                                 track\r
 207                                                         .state( { looped : X_Audio_Sprite_TEMP.bgmLooped } )\r
 208                                                         .play( preset[ 0 ], preset[ 1 ], true, preset[ 3 ], preset[ 4 ] )\r
 209                                                         .seek( X_Audio_Sprite_TEMP.bgmPosition );\r
 210                                         };\r
 211                                         \r
 212                                 } else {\r
 213                                         if( 1 < tracks.length ){\r
 214                                                 track = X_Audio_Sprite_getTrackEnded( X_Audio_Sprite_TEMP.bgmPlaying );\r
 215                                                 track\r
 216                                                         .listen( 'looped', this, X_Audio_Sprite_handleEvent )\r
 217                                                         .state( { looped : false } )\r
 218                                                         .play( preset[ 0 ], preset[ 1 ], true, 0, X_Audio_Sprite_lengthSilence );\r
 219                                         } else {\r
 220                                                 // single track, iOS\r
 221                                                 if( bgm ){\r
 222                                                         X_Audio_Sprite_TEMP.bgmPosition = bgm.currentTime();\r
 223                                                         console.log( 'bgm position : ' + X_Audio_Sprite_TEMP.bgmPosition + ' isPlay:' +  bgm.isPlaying() );\r
 224                                                         X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 225                                                 };\r
 226                                                 track = tracks[ 0 ];\r
 227                                         \r
 228                                                 if( track.listen( 'looped', this, X_Audio_Sprite_handleEvent ).isPlaying() ){\r
 229                                                         track\r
 230                                                                 .state( {\r
 231                                                                         loop          : true,\r
 232                                                                         looped        : false,\r
 233                                                                         startTime     : preset[ 0 ],\r
 234                                                                         endTime       : preset[ 1 ],\r
 235                                                                         loopStartTime : 0,\r
 236                                                                         loopEndTime   : X_Audio_Sprite_lengthSilence\r
 237                                                                 } );\r
 238                                                 } else {\r
 239                                                         track\r
 240                                                                 .play( preset[ 0 ], preset[ 1 ], true, 0, X_Audio_Sprite_lengthSilence );       \r
 241                                                 };\r
 242                                         };\r
 243                                 };\r
 244                                 return tracks.indexOf( track );\r
 245                         };\r
 246                         return -1;\r
 247                 },\r
 248                 \r
 249                 pause : function( uid ){\r
 250                         var track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 251                         if( X_Audio_Sprite_TEMP.bgmTrack === track ){\r
 252                                 X_Audio_Sprite_TEMP.bgmPosition = track.currentTime();\r
 253                                 X_Audio_Sprite_TEMP.bgmPlaying  = false;\r
 254                                 X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 255                         };\r
 256                         console.log( 'pause' );\r
 257                         track && track.play( 0, X_Audio_Sprite_lengthSilence, true, 0, X_Audio_Sprite_lengthSilence ).seek( 0 );\r
 258                         return this;\r
 259                 },\r
 260                 \r
 261                 seek : function( uid, position ){\r
 262                         var track = X_Audio_Sprite_TEMP.tracks[ uid ],\r
 263                                 end;\r
 264                         if( track ){\r
 265                                 delete track.seekTime;\r
 266                                 end = X_AudioWrapper_getEndTime( track );\r
 267                                 position <= end && X_AudioWrapper_getStartTime( track, end ) <= position && track.seek( postion );\r
 268                         };\r
 269                         return this;\r
 270                 },\r
 271                 \r
 272                 volume : function( uid, opt_volume ){\r
 273                         var track, i;\r
 274                         // TODO uid = 0\r
 275                         if( uid === 0 ){\r
 276                                 if( opt_volume === undefined ){\r
 277                                         return X_Audio_Sprite_TEMP.volume;\r
 278                                 };\r
 279                                 for( i = X_Audio_Sprite_TEMP.tracks.length; i; ){\r
 280                                         X_Audio_Sprite_TEMP.tracks[ --i ].volume( opt_volume );\r
 281                                 };\r
 282                                 return this;\r
 283                         };\r
 284                         track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 285                         if( opt_volume === undefined ){\r
 286                                 return track ? track.volume() : -1;\r
 287                         };\r
 288                         track && track.volume( opt_volume );\r
 289                         return this;\r
 290                 },\r
 291                 \r
 292                 state : function( uid, opt_obj ){\r
 293                         var track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 294                         // TODO uid = 0\r
 295                         if( opt_obj === undefined ){\r
 296                                 return track ? track.state() : { volume : X_Audio_Sprite_TEMP.volume };\r
 297                         };\r
 298                         track && track.state( opt_obj );\r
 299                         return this;\r
 300                 }\r
 301 };\r
 302 \r
 303 function X_Audio_Sprite_handleEvent( e ){\r
 304         var i, tracks, track;\r
 305         switch( e.type ){\r
 306                 case 'backendfound' :\r
 307                         this.asyncDispatch( e );\r
 308                         e.target.unlisten( 'nobackend', this, X_Audio_Sprite_handleEvent );\r
 309                         \r
 310                         if( e.backendName === 'HTML Audio' ){\r
 311                                 e.target.listenOnce( [ X_Audio_HTMLAudio_playTrigger, 'loadeddata' ], this, X_Audio_Sprite_handleEvent );\r
 312                         } else {\r
 313                                 e.target.listenOnce( 'canplaythrough', this, X_Audio_Sprite_handleEvent );\r
 314                         };\r
 315                         break;\r
 316 \r
 317                 case 'nobackend' :\r
 318                         this.asyncDispatch( e );\r
 319                         e.target.unlisten( 'backendfound', this, X_Audio_Sprite_handleEvent );\r
 320                         break;\r
 321                 \r
 322                 case 'canplaythrough' :\r
 323                 case X_Audio_HTMLAudio_playTrigger :\r
 324                 case 'loadeddata' :\r
 325                         e.target.unlisten( [ X_Audio_HTMLAudio_playTrigger, 'loadeddata', 'canplaythrough' ], this, X_Audio_Sprite_handleEvent );\r
 326                         \r
 327                         if( X_Audio_Sprite_useVideoForMulti ){\r
 328                                 for( i = 0; i < X_Audio_Sprite_TEMP.tracks.length; ++i ){\r
 329                                         X_Audio_Sprite_instance.pause( i );\r
 330                                 };\r
 331                                 e.target.listenOnce( 'timeupdate', this, X_Audio_Sprite_handleEvent ); // Android 標準ブラウザ\r
 332                                 return;\r
 333                         };\r
 334                 case 'timeupdate' :\r
 335                         this.asyncDispatch( 'audioSpriteCanPlay' );\r
 336                         break;\r
 337                 \r
 338                 case 'looped' :\r
 339                         if( e.target === X_Audio_Sprite_TEMP.bgmTrack ){\r
 340                                 X_Audio_Sprite_TEMP.bgmLooped = true;\r
 341                         } else {\r
 342                                 // single track | iOS\r
 343                                 if( X_Audio_Sprite_TEMP.bgmPlaying && !X_Audio_Sprite_TEMP.bgmTrack ){\r
 344                                         X_Audio_Sprite_TEMP.bgmTrack = e.target;\r
 345                                         this.play( X_Audio_Sprite_TEMP.bgmName );\r
 346                                         return X.Callback.PREVENT_DEFAULT;\r
 347                                 };\r
 348                         };\r
 349                         break;\r
 350                 \r
 351                 case X.Event.VIEW_ACTIVATE :\r
 352                         // track.play(); or iOS need touch??\r
 353                         tracks = X_Audio_Sprite_TEMP.pauseTracks;\r
 354                         while( tracks.length ) tracks.pop().play();\r
 355                         break;\r
 356 \r
 357                 case X.Event.VIEW_DEACTIVATE :\r
 358                         // track.pause();\r
 359                         tracks = X_Audio_Sprite_TEMP.tracks;\r
 360                         i      = tracks.length;\r
 361                         for( ; i; ){\r
 362                                 track = tracks[ --i ];\r
 363                                 track.isPlaying() && X_Audio_Sprite_TEMP.pauseTracks.push( track.pause() );\r
 364                         };\r
 365                         break;\r
 366                 \r
 367                 case X.Event.KILL_INSTANCE :\r
 368                         X_ViewPort.unlisten( [ X.Event.VIEW_ACTIVATE, X.Event.VIEW_DEACTIVATE ], this, X_Audio_Sprite_handleEvent );\r
 369                         this.close();\r
 370                         break;\r
 371         };\r
 372 };\r