1 var X_Audio_constructor = 3.1 <= X_UA[ 'Safari' ] && X_UA[ 'Safari' ] < 4 ?
3 a = document.createElement( 'audio' );
8 // Android1.6 + MobileOpera12 HTMLAudio はいるが呼ぶとクラッシュする
9 !( X_UA[ 'Android' ] < 2 ) ?
10 window[ 'Audio' ] || window.HTMLAudioElement : null,
12 // Blink5 Opera32 Win8 は HTMLAudio が壊れている、WebAudio は mp3 がデコードに失敗、ogg が動作
13 X_Audio_blinkOperaFix = X_UA[ 'BlinkOpera' ] && X_UA[ 'Windows' ],
17 if( X_Audio_constructor ){
18 //http://himaxoff.blog111.fc2.com/blog-entry-97.html
19 //引数なしで new Audio() とすると、Operaでエラーになるそうなので注意。
20 X_TEMP.rawAudio = new X_Audio_constructor( '' );
22 // https://html5experts.jp/miyuki-baba/3766/
23 // TODO Chrome for Android31 で HE-AAC が低速再生されるバグ
24 // TODO Android4 標準ブラウザで ogg のシークが正しくない!
25 if( X_TEMP.rawAudio.canPlayType ){
27 'mp3' : X_TEMP.rawAudio.canPlayType('audio/mpeg'),
28 'opus' : X_TEMP.rawAudio.canPlayType('audio/ogg; codecs="opus"'),
29 'ogg' : X_TEMP.rawAudio.canPlayType('audio/ogg; codecs="vorbis"'),
30 'wav' : X_TEMP.rawAudio.canPlayType('audio/wav; codecs="1"'),
31 'aac' : X_TEMP.rawAudio.canPlayType('audio/aac'),
32 'm4a' : X_TEMP.rawAudio.canPlayType('audio/x-m4a') + X_TEMP.rawAudio.canPlayType('audio/m4a') + X_TEMP.rawAudio.canPlayType('audio/aac'),
33 'mp4' : X_TEMP.rawAudio.canPlayType('audio/x-mp4') + X_TEMP.rawAudio.canPlayType('audio/mp4') + X_TEMP.rawAudio.canPlayType('audio/aac'),
34 'weba' : X_TEMP.rawAudio.canPlayType('audio/webm; codecs="vorbis"')
36 (function( X_Audio_codecs, k, v ){
37 for( k in X_Audio_codecs ){
38 //if( X_EMPTY_OBJECT[ k ] ) continue;
39 v = X_Audio_codecs[ k ];
40 v = v && !!( v.split( 'no' ).join( '' ) );
42 console.log( k + ' ' + X_Audio_codecs[ k ] );
43 X_Audio_codecs[ k ] = true;
45 delete X_Audio_codecs[ k ];
48 if( X_Audio_blinkOperaFix ) delete X_Audio_codecs[ 'mp3' ];
53 'mp3' : X_UA[ 'IE' ] || X_UA[ 'Chrome' ] || ( X_UA[ 'Windows' ] && X_UA[ 'Safari' ] ),
54 'ogg' : 5 <= X_UA[ 'Gecko' ] || X_UA[ 'Chrome' ] || X_UA[ 'Opera' ] ,
55 'wav' : X_UA[ 'Gecko' ] || X_UA[ 'Opera' ] || ( X_UA[ 'Windows' ] && X_UA[ 'Safari' ] ),
56 'aac' : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],
57 'm4a' : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],
58 'mp4' : X_UA[ 'IE' ] || X_UA[ 'WebKit' ],
59 'weba' : 2 <= X_UA[ 'Gecko' ] || 10.6 <= X_UA[ 'Opera' ] // firefox4+(Gecko2+)
61 (function( X_Audio_codecs, k ){
62 for( k in X_Audio_codecs ){
63 //if( X_EMPTY_OBJECT[ k ] ) continue;
64 if( X_Audio_codecs[ k ] ){
65 console.log( k + ' ' + X_Audio_codecs[ k ] );
66 X_Audio_codecs[ k ] = true;
68 delete X_Audio_codecs[ k ];
74 if( X_Audio_blinkOperaFix ){
75 X_Audio_constructor = null;
76 delete X_TEMP.rawAudio;
81 var X_WebAudio_context = !X_UA[ 'iPhone_4s' ] && !X_UA[ 'iPad_2Mini1' ] && !X_UA[ 'iPod_4' ] &&
82 // TODO なんで fennec を禁止?
83 !( X_UA[ 'Gecko' ] && X_UA[ 'Android' ] ) &&
84 // Firefox40.0.5 + Windows8 で音声が途中から鳴らなくなる
85 // Firefox41.0.1 + Windows8 で音声が途中から鳴らなくなる
86 !( 40 <= X_UA[ 'Gecko' ] && X_UA[ 'Gecko' ] < 42 && X_UA[ 'Windows' ] ) &&
87 ( window[ 'AudioContext' ] || window[ 'webkitAudioContext' ] ),
88 X_WebAudio_BUFFER_LIST = [],
90 X_WebAudio_BufferLoader,
94 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
96 if( X_WebAudio_context ){
98 X_WebAudio_context = new X_WebAudio_context;
100 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
101 'X.WebAudio.BufferLoader',
106 onDecodeSuccess : null,
107 onDecodeError : null,
113 'Constructor' : function( webAudio, url ){
114 this.webAudioList = [ webAudio ];
116 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
117 [ 'listen' ]( X_EVENT_PROGRESS, this )
118 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
119 X_WebAudio_BUFFER_LIST.push( this );
122 handleEvent : function( e ){
124 case X_EVENT_PROGRESS :
125 this[ 'dispatch' ]( { type : 'progress', 'percent' : e[ 'percent' ] } );
128 case X_EVENT_SUCCESS :
130 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
132 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
133 // iOS 7.1 で decodeAudioData に処理が入った瞬間にスクリーンを長押しする(スクロールを繰り返す)と
134 // decoeAudioData の処理がキャンセルされることがある(エラーやコールバックの発火もなく、ただ処理が消滅する)。
135 // ただし iOS 8.1.2 では エラーになる
136 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
137 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
139 if( X_WebAudio_context[ 'decodeAudioData' ] ){
140 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
141 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
142 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
146 case X_EVENT_COMPLETE :
148 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
151 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
155 _onDecodeSuccess : function( buffer ){
156 this.onDecodeSuccess && this._onDecodeComplete();
160 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
164 console.log( 'WebAudio decode success!' );
166 this.audioBuffer = buffer;
168 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
170 console.log( 'WebAudio decoded!' );
173 _onDecodeError : function(){
174 console.log( 'WebAudio decode error!' );
175 this._onDecodeComplete();
177 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
180 _onDecodeComplete : function(){
181 X_Closure_correct( this.onDecodeSuccess );
182 delete this.onDecodeSuccess;
183 X_Closure_correct( this.onDecodeError );
184 delete this.onDecodeError;
187 unregister : function( webAudio ){
188 var list = this.webAudioList,
189 i = list.indexOf( webAudio );
193 this.xhr && this.xhr[ 'kill' ]();
203 X_WebAudio = X_AudioBase[ 'inherits' ](
220 'Constructor' : function( disatcher, url, option ){
222 l = X_WebAudio_BUFFER_LIST.length,
226 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
227 * L-01F 等の一部端末で Web Audio API の再生結果に特定条件下でノイズが混ざることがある。
228 * 描画レート(描画 FPS)が下がるとノイズが混ざり始め、レートを上げると再生結果が正常になるというもので、オーディオ処理が描画スレッドに巻き込まれているような動作を見せる。
230 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
231 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
232 X_WebAudio_fpsFix = true;
236 loader = X_WebAudio_BUFFER_LIST[ i ];
237 if( loader.audioUrl === url ){
238 this.loader = loader;
239 loader.webAudioList.push( this );
245 this.loader = loader = X_WebAudio_BufferLoader( this, url );
248 this.disatcher = disatcher || this;
249 this.setState( option );
251 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
253 if( loader.audioBuffer || loader.errorState ){
254 this._onLoadBufferComplete();
256 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
261 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
264 delete this.audioBuffer;
266 this.playing && this.actualPause();
267 this.bufferSource && this._sourceDispose();
269 this._onended && X_Closure_correct( this._onended );
271 this.gainNode && this.gainNode.disconnect();
273 _onLoadBufferComplete : function( e ){
274 var loader = this.loader,
275 buffer = loader.audioBuffer;
277 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
280 this.error = loader.errorState;
282 this.disatcher[ 'dispatch' ]({
283 type : X_EVENT_ERROR,
284 error : loader.errorState,
285 message : loader.errorState === 1 ?
286 'load buffer network error' :
287 'buffer decode error'
293 this.audioBuffer = buffer;
294 this.duration = buffer.duration * 1000;
296 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
298 console.log( 'WebAudio buffer ready' );
300 this.autoplay && X_Timer_once( 16, this, this.play );
304 actualPlay : function(){
307 console.log( '[WebAudio] play abuf:' + !!this.audioBuffe );
309 if( !this.audioBuffer ){
310 this.autoplay = true;
314 end = X_Audio_getEndTime( this );
315 begin = X_Audio_getStartTime( this, end, true );
317 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
319 if( this.bufferSource ) this._sourceDispose();
320 if( !this.gainNode ){
321 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
322 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
324 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
325 this.bufferSource.buffer = this.audioBuffer;
326 this.bufferSource[ 'connect' ]( this.gainNode );
328 this.gainNode[ 'gain' ].value = this.gain;
330 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
331 // 破棄された X.Callback が呼ばれて、obj.proxy() でエラーになる。Firefox では、onended は使わない
332 // 多くのブラウザで onended は timer を使ったカウントより遅いので使わない
333 //if( this.bufferSource.onended !== undefined ){
334 //console.log( '> use onended' );
335 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
337 this._timerID && X_Timer_remove( this._timerID );
338 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
341 if( this.bufferSource.start ){
342 this.bufferSource.start( 0, begin / 1000, end / 1000 );
344 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
348 this._startPos = begin;
349 this._endPosition = end;
350 this._startTime = X_WebAudio_context.currentTime * 1000;
351 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
354 _sourceDispose : function(){
355 this.bufferSource.disconnect();
356 delete this.bufferSource.onended;
357 delete this.bufferSource;
360 _onInterval : function(){
362 delete this._interval;
363 return X_CALLBACK_UN_LISTEN;
365 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
368 _onEnded : function(){
370 delete this._timerID;
373 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
374 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
377 if( time < 0 ) return;
380 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
381 // ' from:' + this._startPos + ' to:' + this._endPosition );
382 this._timerID = X_Timer_once( -time, this, this._onEnded );
388 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
390 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
395 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
400 actualPause : function(){
401 //if( !this.playing ) return this;
403 console.log( '[WebAudio] pause' );
405 this.seekTime = this.getActualCurrentTime();
407 this._timerID && X_Timer_remove( this._timerID );
408 delete this._timerID;
411 if( this.bufferSource ){
412 if( this.bufferSource.onended ) delete this.bufferSource.onended;
414 this.bufferSource.stop ?
415 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
419 getActualCurrentTime : function(){
420 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
423 afterUpdateState : function( result ){
424 if( result & 2 || result & 1 ){ // seek
428 this.gainNode[ 'gain' ].value = this.gain;
435 X_Audio_BACKENDS.push(
439 backendName : 'WebAudio',
441 canPlay : X_Audio_codecs,
443 detect : function( proxy, source, ext ){
444 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );