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' ],
91 X_WebAudio_touchState = X_WebAudio_need1stTouch,
93 X_WebAudio_BufferLoader,
97 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
99 if( X_WebAudio_context ){
101 X_WebAudio_context = new X_WebAudio_context;
103 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
104 'X.WebAudio.BufferLoader',
109 onDecodeSuccess : null,
110 onDecodeError : null,
116 'Constructor' : function( webAudio, url ){
117 this.webAudioList = [ webAudio ];
119 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
120 [ 'listen' ]( X_EVENT_PROGRESS, this )
121 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
122 X_WebAudio_BUFFER_LIST.push( this );
125 handleEvent : function( e ){
129 case X_EVENT_PROGRESS :
130 for( i = 0, l = this.webAudioList.length; i < l; ++i ){
131 this.webAudioList[ i ][ 'dispatch' ]( { type : X_EVENT_PROGRESS, 'percent' : e[ 'percent' ] } );
135 case X_EVENT_SUCCESS :
137 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
139 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
140 // 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
141 // 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)。
142 // ただし iOS 8.1.2 では エラーになる
143 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
144 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
146 if( X_WebAudio_context[ 'decodeAudioData' ] ){
147 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
148 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
149 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
153 case X_EVENT_COMPLETE :
155 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
158 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
162 _onDecodeSuccess : function( buffer ){
163 this.onDecodeSuccess && this._onDecodeComplete();
167 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
171 console.log( 'WebAudio decode success!' );
173 this.audioBuffer = buffer;
175 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
177 console.log( 'WebAudio decoded!' );
180 _onDecodeError : function(){
181 console.log( 'WebAudio decode error!' );
182 this._onDecodeComplete();
184 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
187 _onDecodeComplete : function(){
188 X_Closure_correct( this.onDecodeSuccess );
189 delete this.onDecodeSuccess;
190 X_Closure_correct( this.onDecodeError );
191 delete this.onDecodeError;
194 unregister : function( webAudio ){
195 var list = this.webAudioList,
196 i = list.indexOf( webAudio );
200 this.xhr && this.xhr[ 'kill' ]();
210 X_WebAudio = X_AudioBase[ 'inherits' ](
227 'Constructor' : function( disatcher, url, option ){
229 l = X_WebAudio_BUFFER_LIST.length,
233 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
234 * 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。
235 * 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。
237 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
238 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
239 X_WebAudio_fpsFix = true;
243 loader = X_WebAudio_BUFFER_LIST[ i ];
244 if( loader.audioUrl === url ){
245 this.loader = loader;
246 loader.webAudioList.push( this );
252 this.loader = loader = X_WebAudio_BufferLoader( this, url );
255 this.disatcher = disatcher || this;
256 this.setState( option );
258 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
260 if( loader.audioBuffer || loader.errorState ){
261 this._onLoadBufferComplete();
263 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
268 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
271 delete this.audioBuffer;
273 this.playing && this.actualPause();
274 this.bufferSource && this._sourceDispose();
276 this._onended && X_Closure_correct( this._onended );
278 this.gainNode && this.gainNode.disconnect();
280 _onLoadBufferComplete : function( e ){
281 var loader = this.loader,
282 buffer = loader.audioBuffer;
284 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
287 this.error = loader.errorState;
289 this.disatcher[ 'dispatch' ]({
290 type : X_EVENT_ERROR,
291 error : loader.errorState,
292 message : loader.errorState === 1 ?
293 'load buffer network error' :
294 'buffer decode error'
300 this.audioBuffer = buffer;
301 this.duration = buffer.duration * 1000;
303 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
305 console.log( 'WebAudio buffer ready' );
308 actualPlay : function(){
311 console.log( '[WebAudio] play abuf:' + !!this.audioBuffer );
313 if( !this.audioBuffer ){
314 this._playReserved = true;
318 if( X_WebAudio_touchState ){
319 e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];
320 if( !e || !e[ 'pointerType' ] ){
321 // alert( 'タッチイベント以外での play! ' + ( e ? e.type : '' ) );
325 X_WebAudio_touchState = false;
327 end = X_Audio_getEndTime( this );
328 begin = X_Audio_getStartTime( this, end, true );
330 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
332 if( this.bufferSource ) this._sourceDispose();
333 if( !this.gainNode ){
334 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
335 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
337 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
338 this.bufferSource.buffer = this.audioBuffer;
339 this.bufferSource[ 'connect' ]( this.gainNode );
341 this.gainNode[ 'gain' ].value = this.gain;
343 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
344 // 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
345 // 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
346 //if( this.bufferSource.onended !== undefined ){
347 //console.log( '> use onended' );
348 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
350 this._timerID && X_Timer_remove( this._timerID );
351 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
354 if( this.bufferSource.start ){
355 this.bufferSource.start( 0, begin / 1000, end / 1000 );
357 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
361 this._startPos = begin;
362 this._endPosition = end;
363 this._startTime = X_WebAudio_context.currentTime * 1000;
364 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
367 _sourceDispose : function(){
368 this.bufferSource.disconnect();
369 delete this.bufferSource.onended;
370 delete this.bufferSource;
373 _onInterval : function(){
375 delete this._interval;
376 return X_CALLBACK_UN_LISTEN;
378 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
381 _onEnded : function(){
383 delete this._timerID;
386 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
387 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
390 if( time < 0 ) return;
393 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
394 // ' from:' + this._startPos + ' to:' + this._endPosition );
395 this._timerID = X_Timer_once( -time, this, this._onEnded );
401 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
403 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
408 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
413 actualPause : function(){
414 console.log( '[WebAudio] pause' );
416 this._timerID && X_Timer_remove( this._timerID );
417 delete this._timerID;
420 if( this.bufferSource ){
421 if( this.bufferSource.onended ) delete this.bufferSource.onended;
423 this.bufferSource.stop ?
424 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
428 getActualCurrentTime : function(){
429 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
432 afterUpdateState : function( result ){
433 if( result & 2 || result & 1 ){ // seek
437 this.gainNode[ 'gain' ].value = this.gain;
444 X_Audio_BACKENDS.push(
448 backendName : 'WebAudio',
450 canPlay : X_Audio_codecs,
452 detect : function( proxy, source, ext ){
453 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );