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 = // 4s 以下ではない iPad 2G または iPad mini 1G 以下ではない, iPod touch 4G 以下ではない
82 !X_UA[ 'iPhone_4s' ] && !X_UA[ 'iPad_2Mini1' ] && !X_UA[ 'iPod_4' ] &&
83 // Android2 + Gecko で WebAudio が極めて不安定
84 !( X_UA[ 'Fennec' ] && X_UA[ 'Android' ] < 3 ) &&
85 // Firefox40.0.5 + Windows8 で音声が途中から鳴らなくなる
86 // Firefox41.0.1 + Windows8 で音声が途中から鳴らなくなる
87 !( 40 <= X_UA[ 'Gecko' ] && X_UA[ 'Gecko' ] < 42 && X_UA[ 'Windows' ] ) &&
88 ( window[ 'AudioContext' ] || window[ 'webkitAudioContext' ] ),
89 X_WebAudio_BUFFER_LIST = [],
90 X_WebAudio_need1stTouch = X_UA[ 'iOS' ],
92 X_WebAudio_BufferLoader,
96 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
98 if( X_WebAudio_context ){
100 X_WebAudio_context = new X_WebAudio_context;
102 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
103 'X.WebAudio.BufferLoader',
108 onDecodeSuccess : null,
109 onDecodeError : null,
115 'Constructor' : function( webAudio, url ){
116 this.webAudioList = [ webAudio ];
118 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
119 [ 'listen' ]( X_EVENT_PROGRESS, this )
120 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
121 X_WebAudio_BUFFER_LIST.push( this );
124 handleEvent : function( e ){
126 case X_EVENT_PROGRESS :
127 this[ 'dispatch' ]( { type : 'progress', 'percent' : e[ 'percent' ] } );
130 case X_EVENT_SUCCESS :
132 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
134 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
135 // 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
136 // 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)。
137 // ただし iOS 8.1.2 では エラーになる
138 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
139 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
141 if( X_WebAudio_context[ 'decodeAudioData' ] ){
142 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
143 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
144 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
148 case X_EVENT_COMPLETE :
150 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
153 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
157 _onDecodeSuccess : function( buffer ){
158 this.onDecodeSuccess && this._onDecodeComplete();
162 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
166 console.log( 'WebAudio decode success!' );
168 this.audioBuffer = buffer;
170 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
172 console.log( 'WebAudio decoded!' );
175 _onDecodeError : function(){
176 console.log( 'WebAudio decode error!' );
177 this._onDecodeComplete();
179 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
182 _onDecodeComplete : function(){
183 X_Closure_correct( this.onDecodeSuccess );
184 delete this.onDecodeSuccess;
185 X_Closure_correct( this.onDecodeError );
186 delete this.onDecodeError;
189 unregister : function( webAudio ){
190 var list = this.webAudioList,
191 i = list.indexOf( webAudio );
195 this.xhr && this.xhr[ 'kill' ]();
205 X_WebAudio = X_AudioBase[ 'inherits' ](
222 'Constructor' : function( disatcher, url, option ){
224 l = X_WebAudio_BUFFER_LIST.length,
228 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
229 * 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。
230 * 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。
232 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
233 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
234 X_WebAudio_fpsFix = true;
238 loader = X_WebAudio_BUFFER_LIST[ i ];
239 if( loader.audioUrl === url ){
240 this.loader = loader;
241 loader.webAudioList.push( this );
247 this.loader = loader = X_WebAudio_BufferLoader( this, url );
250 this.disatcher = disatcher || this;
251 this.setState( option );
253 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
255 if( loader.audioBuffer || loader.errorState ){
256 this._onLoadBufferComplete();
258 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
263 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
266 delete this.audioBuffer;
268 this.playing && this.actualPause();
269 this.bufferSource && this._sourceDispose();
271 this._onended && X_Closure_correct( this._onended );
273 this.gainNode && this.gainNode.disconnect();
275 _onLoadBufferComplete : function( e ){
276 var loader = this.loader,
277 buffer = loader.audioBuffer;
279 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
282 this.error = loader.errorState;
284 this.disatcher[ 'dispatch' ]({
285 type : X_EVENT_ERROR,
286 error : loader.errorState,
287 message : loader.errorState === 1 ?
288 'load buffer network error' :
289 'buffer decode error'
295 this.audioBuffer = buffer;
296 this.duration = buffer.duration * 1000;
298 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
300 console.log( 'WebAudio buffer ready' );
302 this.autoplay && !X_WebAudio_need1stTouch && X_Timer_once( 16, this, this.actualPlay );
306 actualPlay : function(){
309 console.log( '[WebAudio] play abuf:' + !!this.audioBuffer );
311 if( !this.audioBuffer ){
312 this.autoplay = true;
316 if( X_WebAudio_need1stTouch ){
317 e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];
318 if( !e || !e[ 'pointerType' ] ){
319 alert( 'タッチイベント以外での play! ' + ( e ? e.type : '' ) );
324 end = X_Audio_getEndTime( this );
325 begin = X_Audio_getStartTime( this, end, true );
327 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
329 if( this.bufferSource ) this._sourceDispose();
330 if( !this.gainNode ){
331 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
332 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
334 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
335 this.bufferSource.buffer = this.audioBuffer;
336 this.bufferSource[ 'connect' ]( this.gainNode );
338 this.gainNode[ 'gain' ].value = this.gain;
340 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
341 // 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
342 // 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
343 //if( this.bufferSource.onended !== undefined ){
344 //console.log( '> use onended' );
345 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
347 this._timerID && X_Timer_remove( this._timerID );
348 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
351 if( this.bufferSource.start ){
352 this.bufferSource.start( 0, begin / 1000, end / 1000 );
354 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
358 this._startPos = begin;
359 this._endPosition = end;
360 this._startTime = X_WebAudio_context.currentTime * 1000;
361 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
364 _sourceDispose : function(){
365 this.bufferSource.disconnect();
366 delete this.bufferSource.onended;
367 delete this.bufferSource;
370 _onInterval : function(){
372 delete this._interval;
373 return X_CALLBACK_UN_LISTEN;
375 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
378 _onEnded : function(){
380 delete this._timerID;
383 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
384 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
387 if( time < 0 ) return;
390 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
391 // ' from:' + this._startPos + ' to:' + this._endPosition );
392 this._timerID = X_Timer_once( -time, this, this._onEnded );
398 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
400 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
405 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
410 actualPause : function(){
411 //if( !this.playing ) return this;
413 console.log( '[WebAudio] pause' );
415 this.seekTime = this.getActualCurrentTime();
417 this._timerID && X_Timer_remove( this._timerID );
418 delete this._timerID;
421 if( this.bufferSource ){
422 if( this.bufferSource.onended ) delete this.bufferSource.onended;
424 this.bufferSource.stop ?
425 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
429 getActualCurrentTime : function(){
430 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
433 afterUpdateState : function( result ){
434 if( result & 2 || result & 1 ){ // seek
438 this.gainNode[ 'gain' ].value = this.gain;
445 X_Audio_BACKENDS.push(
449 backendName : 'WebAudio',
451 canPlay : X_Audio_codecs,
453 detect : function( proxy, source, ext ){
454 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );