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_needTouchFirst   = !!X_UA.iOS,\r
   9         X_Audio_Sprite_inTouchAction    = false,\r
  10         X_Audio_Sprite_enableMultiTrack = !( X_UA.iOS < 6 ),\r
  11         X_Audio_Sprite_enableVolume     = window.HTMLAudioElement && ( !X_UA.iOS && !X_UA.AndroidBrowser && !X_UA.OperaMobile && !X_UA.OperaTablet ),\r
  12         X_Audio_Sprite_useVideoForMulti = 4 <= X_UA.AndroidBrowser,\r
  13         X_Audio_Sprite_maxTracks        = X_UA.iOS < 6 ? 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                 volume      : 1,\r
  23                 bgmTrack    : null,\r
  24                 bgmPosition : 0,\r
  25                 bgmName     : '',\r
  26                 bgmLooped   : false,\r
  27                 bgmPlaying  : false\r
  28         },\r
  29         X_Audio_Sprite_instance;\r
  30 \r
  31 X.Audio.Sprite = {\r
  32         \r
  33         shouldUse        : X_Audio_Sprite_shouldUse,\r
  34         \r
  35         needTouchFirst   : X_Audio_Sprite_needTouchFirst,\r
  36         \r
  37         enableMultiTrack : X_Audio_Sprite_enableMultiTrack,\r
  38         \r
  39         create : function( setting ){\r
  40                 // close()\r
  41                 if( X_Audio_Sprite_instance ){\r
  42                         X_Audio_Sprite_instance.close();\r
  43                 } else {\r
  44                         X_Audio_Sprite_instance = X_Class_override( new X.EventDispatcher(), X_Audio_Sprite_members );\r
  45                 };\r
  46                 X_Audio_Sprite_instance.setup( setting );\r
  47                 return X_Audio_Sprite_instance;\r
  48                 \r
  49         }\r
  50 };\r
  51 \r
  52 // 再生が終わっているもの、終わりかけのものを探す\r
  53 function X_Audio_Sprite_getTrackEnded(){\r
  54         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
  55                 l = tracks.length,\r
  56                 i = 0, track, state, last = 1 / 0, _last, index;\r
  57         \r
  58         for( ; i < l; ++i ){\r
  59                 track = tracks[ i ];\r
  60                 state = track.state();\r
  61                 if( !state.playing ) return track;\r
  62                 if( track === X_Audio_Sprite_TEMP.bgmTrack ) continue;\r
  63                 if( state.currentTime <= X_Audio_Sprite_lengthSilence + X_Audio_Sprite_lengthDistance ) return track;\r
  64                 _last = state.endTime - state.currentTime;\r
  65                 if( _last < last ){\r
  66                         last  = _last;\r
  67                         index = i;\r
  68                 };\r
  69         };\r
  70         return tracks[ index ];\r
  71 };\r
  72 \r
  73 /*\r
  74  * {\r
  75  *       urls      : [ 'xx.ogg', 'xx.mp3' ],\r
  76  *       numTracks : 3,\r
  77  *   useVideo  : false,\r
  78  *   volume    : 1,\r
  79  *       BGM_01 : [ '15.00', '45.500', true, '17.666', '50.999' ],\r
  80  *   BGM_02 : [ '56.00', '1:15.230', true ]\r
  81  * }\r
  82  */\r
  83 \r
  84 X_Audio_Sprite_members = {\r
  85                 \r
  86                 setup : function( setting ){\r
  87                         \r
  88                         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
  89                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
  90                                 presets = X_Audio_Sprite_TEMP.presets,\r
  91                                 urls    = setting[ 'urls' ],\r
  92                                 n       = setting[ 'numTracks' ] || 1,\r
  93                                 video   = setting[ 'useVideo' ],\r
  94                                 option  = {\r
  95                                         volume    : setting[ 'volume' ] || 0.5,\r
  96                                         autoplay  : false,\r
  97                                         startTime : 0,\r
  98                                         endTime   : X_Audio_Sprite_lengthSilence,\r
  99                                         loop      : true\r
 100                                 },\r
 101                                 k, i, v, track;\r
 102                         \r
 103                         n = n <= X_Audio_Sprite_maxTracks ? n : X_Audio_Sprite_maxTracks;\r
 104                         \r
 105                         video = video || ( 1 < n && X_Audio_Sprite_useVideoForMulti );\r
 106                         \r
 107                         for( k in setting ){\r
 108                                 v = setting[ k ];\r
 109                                 if( X.Type.isArray( v ) && v !== urls){\r
 110                                         v = X.Object.cloneArray( v );\r
 111                                         for( i = v.length; i; ){\r
 112                                                 --i;\r
 113                                                 if( i !== 2 ) v[ i ] = X_AudioWrapper_timeStringToNumber( v[ i ] );\r
 114                                         };                                      \r
 115                                         if( v[ 2 ] ) bgms[ k ] = v;\r
 116                                         presets[ k ] = v;\r
 117                                 };\r
 118                         };\r
 119                         \r
 120                         for( i = 0; i < n; ++i ){\r
 121                                 if( i === 1 && X_Audio_Sprite_useVideoForMulti ){\r
 122                                         // TODO use <Video>\r
 123                                         tracks.push( X.Audio.create( urls, option ) );\r
 124                                 } else {\r
 125                                         tracks.push( X.Audio.create( urls, option ) );\r
 126                                 };\r
 127                         };\r
 128                         \r
 129                         tracks[ n - 1 ].listenOnce( [ 'backendfound', 'nobackend' ], this, X_Audio_Sprite_handleEvent );\r
 130                         \r
 131                         X_Audio_Sprite_instance.numTracks = n;\r
 132                 },\r
 133                 \r
 134                 close : function(){\r
 135                         var tracks  = X_Audio_Sprite_TEMP.tracks,\r
 136                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
 137                                 presets = X_Audio_Sprite_TEMP.presets,\r
 138                                 k;\r
 139                         \r
 140                         while( tracks.length ){\r
 141                                 tracks.pop().kill();\r
 142                         };\r
 143                         \r
 144                         for( k in bgms ){\r
 145                                 delete bgms[ k ];\r
 146                         };\r
 147                         for( k in presets ){\r
 148                                 delete presets[ k ];\r
 149                         };\r
 150                         \r
 151                         X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 152                         X_Audio_Sprite_TEMP.bgmPosition = 0;\r
 153                         X_Audio_Sprite_TEMP.bgmName     = '';\r
 154                         X_Audio_Sprite_TEMP.bgmLooped   = false;\r
 155                         X_Audio_Sprite_TEMP.bgmPlaying  = false;\r
 156                 },\r
 157                 \r
 158                 load : function(){\r
 159                         var tracks = X_Audio_Sprite_TEMP.tracks,\r
 160                                 i = 0, l = tracks.length;\r
 161                         for( ; i < l; ++i ){\r
 162                                 X_AudioProxy_getAudioWrapper( tracks[ i ] )._rawObject.load();\r
 163                         };\r
 164                 },\r
 165                 \r
 166                 /*\r
 167                  * @return uid Number\r
 168                  */\r
 169                 play : function( name ){\r
 170                         var bgm     = X_Audio_Sprite_TEMP.bgmTrack,\r
 171                                 tracks  = X_Audio_Sprite_TEMP.tracks,\r
 172                                 bgms    = X_Audio_Sprite_TEMP.BGMs,\r
 173                                 presets = X_Audio_Sprite_TEMP.presets,\r
 174                                 preset  = presets[ name ],\r
 175                                 i, k;\r
 176                         \r
 177                         if( preset ){\r
 178                                 if( bgms[ name ] ){\r
 179                                         if( name !== X_Audio_Sprite_TEMP.bgmName ){\r
 180                                                 // bgm変更\r
 181                                                 X_Audio_Sprite_TEMP.bgmName     = name;\r
 182                                                 X_Audio_Sprite_TEMP.bgmPosition = preset[ 0 ];\r
 183                                                 X_Audio_Sprite_TEMP.bgmPlaying  = true;\r
 184                                                 X_Audio_Sprite_TEMP.bgmLooped   = false;\r
 185                                         };\r
 186                                         if( bgm ){\r
 187                                                 track = bgm;\r
 188                                         } else\r
 189                                         if( 1 < tracks.length ){\r
 190                                                 track = X_Audio_Sprite_TEMP.bgmTrack = X_Audio_Sprite_getTrackEnded();\r
 191                                         } else {\r
 192                                                 track = X_Audio_Sprite_TEMP.bgmTrack = tracks[ 0 ];\r
 193                                         };\r
 194                                         track\r
 195                                                 .state( { looped : X_Audio_Sprite_TEMP.bgmLooped } )\r
 196                                                 .play( preset[ 0 ], preset[ 1 ], true, preset[ 3 ], preset[ 4 ] )\r
 197                                                 .seek( X_Audio_Sprite_TEMP.bgmPosition )\r
 198                                                 .listen( 'looped', this, X_Audio_Sprite_handleEvent );\r
 199                                 } else {\r
 200                                         if( 1 < tracks.length ){\r
 201                                                 track = X_Audio_Sprite_getTrackEnded( X_Audio_Sprite_TEMP.bgmPlaying );\r
 202                                                 track\r
 203                                                         .listen( 'looped', this, X_Audio_Sprite_handleEvent )\r
 204                                                         .state( { looped : false } )\r
 205                                                         .play( preset[ 0 ], preset[ 1 ], true, 0, X_Audio_Sprite_lengthSilence );\r
 206                                         } else {\r
 207                                                 // single track, iOS\r
 208                                                 if( bgm ){\r
 209                                                         X_Audio_Sprite_TEMP.bgmPosition = bgm.currentTime();\r
 210                                                         X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 211                                                 };\r
 212                                                 track = tracks[ 0 ];\r
 213                                                 track\r
 214                                                         .listen( 'looped', this, X_Audio_Sprite_handleEvent )\r
 215                                                         .state( { looped : false } )\r
 216                                                         .play( preset[ 0 ], preset[ 1 ], true, 0, X_Audio_Sprite_lengthSilence );\r
 217                                         };\r
 218                                 };\r
 219                                 return tracks.indexOf( track );\r
 220                         };\r
 221                         return -1;\r
 222                 },\r
 223                 \r
 224                 pause : function( uid ){\r
 225                         var track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 226                         if( X_Audio_Sprite_TEMP.bgmTrack === track ){\r
 227                                 X_Audio_Sprite_TEMP.bgmPosition = track.currentTime();\r
 228                                 X_Audio_Sprite_TEMP.bgmPlaying  = false;\r
 229                                 X_Audio_Sprite_TEMP.bgmTrack    = null;\r
 230                         };\r
 231                         console.log( 'pause' );\r
 232                         track && track.play( 0, X_Audio_Sprite_lengthSilence, true, 0, X_Audio_Sprite_lengthSilence ).seek( 0 );\r
 233                         return this;\r
 234                 },\r
 235                 \r
 236                 seek : function( uid, position ){\r
 237                         var track = X_Audio_Sprite_TEMP.tracks[ uid ],\r
 238                                 end;\r
 239                         if( track ){\r
 240                                 delete track.seekTime;\r
 241                                 end = X_AudioWrapper_getEndTime( track );\r
 242                                 position <= end && X_AudioWrapper_getStartTime( track, end ) <= position && track.seek( postion );\r
 243                         };\r
 244                         return this;\r
 245                 },\r
 246                 \r
 247                 volume : function( uid, opt_volume ){\r
 248                         var track, i;\r
 249                         // TODO uid = 0\r
 250                         if( uid === 0 ){\r
 251                                 if( opt_volume === undefined ){\r
 252                                         return X_Audio_Sprite_TEMP.volume;\r
 253                                 };\r
 254                                 for( i = X_Audio_Sprite_TEMP.tracks.length; i; ){\r
 255                                         X_Audio_Sprite_TEMP.tracks[ --i ].volume( opt_volume );\r
 256                                 };\r
 257                                 return this;\r
 258                         };\r
 259                         track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 260                         if( opt_volume === undefined ){\r
 261                                 return track ? track.volume() : -1;\r
 262                         };\r
 263                         track && track.volume( opt_volume );\r
 264                         return this;\r
 265                 },\r
 266                 \r
 267                 state : function( uid, opt_obj ){\r
 268                         var track = X_Audio_Sprite_TEMP.tracks[ uid ];\r
 269                         // TODO uid = 0\r
 270                         if( opt_obj === undefined ){\r
 271                                 return track ? track.state() : { volume : X_Audio_Sprite_TEMP.volume };\r
 272                         };\r
 273                         track && track.state( opt_obj );\r
 274                         return this;\r
 275                 }\r
 276 };\r
 277 \r
 278 function X_Audio_Sprite_handleEvent( e ){\r
 279         switch( e.type ){\r
 280                 case 'backendfound' :\r
 281                         this.asyncDispatch( e );\r
 282                         e.target.unlisten( 'nobackend', this, X_Audio_Sprite_handleEvent );\r
 283                         \r
 284                         if( e.backendName === 'HTML Audio' ){\r
 285                                 e.target.listen( [ X_Audio_HTMLAudio_playTrigger, 'loadeddata' ], this, X_Audio_Sprite_handleEvent );\r
 286                         } else {\r
 287                                 e.target.listen( 'canplaythrough', this, X_Audio_Sprite_handleEvent );\r
 288                         };\r
 289                         break;\r
 290 \r
 291                 case 'nobackend' :\r
 292                         this.asyncDispatch( e );\r
 293                         e.target.unlisten( 'backendfound', this, X_Audio_Sprite_handleEvent );\r
 294                         break;\r
 295                 \r
 296                 case 'canplaythrough' :\r
 297                 case X_Audio_HTMLAudio_playTrigger :\r
 298                 case 'loadeddata' :\r
 299                         this.asyncDispatch( 'audioSpriteCanPlay' );\r
 300                         break;\r
 301                 \r
 302                 case 'looped' :\r
 303                         if( e.target === X_Audio_Sprite_TEMP.bgmTrack ){\r
 304                                 X_Audio_Sprite_TEMP.bgmLooped = true;\r
 305                         } else {\r
 306                                 // single track | iOS\r
 307                                 if( X_Audio_Sprite_TEMP.bgmPlaying && !X_Audio_Sprite_TEMP.bgmTrack ){\r
 308                                         X_Audio_Sprite_TEMP.bgmTrack = e.target;\r
 309                                         this.play( X_Audio_Sprite_TEMP.bgmName );\r
 310                                 };\r
 311                         };\r
 312                         break;\r
 313                 \r
 314                 case X.Event.KILL_INSTANCE :\r
 315                         this.close();\r
 316                         break;\r
 317         };\r
 318 };\r