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 // Android2 + Gecko で WebAudio が極めて不安定
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 = [],
89 X_WebAudio_need1stTouch = X_UA[ 'iOS' ],
91 X_WebAudio_BufferLoader,
95 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
97 if( X_WebAudio_context ){
99 X_WebAudio_context = new X_WebAudio_context;
101 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
102 'X.WebAudio.BufferLoader',
107 onDecodeSuccess : null,
108 onDecodeError : null,
114 'Constructor' : function( webAudio, url ){
115 this.webAudioList = [ webAudio ];
117 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
118 [ 'listen' ]( X_EVENT_PROGRESS, this )
119 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
120 X_WebAudio_BUFFER_LIST.push( this );
123 handleEvent : function( e ){
125 case X_EVENT_PROGRESS :
126 this[ 'dispatch' ]( { type : 'progress', 'percent' : e[ 'percent' ] } );
129 case X_EVENT_SUCCESS :
131 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
133 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
134 // 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
135 // 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)。
136 // ただし iOS 8.1.2 では エラーになる
137 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
138 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
140 if( X_WebAudio_context[ 'decodeAudioData' ] ){
141 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
142 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
143 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
147 case X_EVENT_COMPLETE :
149 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
152 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
156 _onDecodeSuccess : function( buffer ){
157 this.onDecodeSuccess && this._onDecodeComplete();
161 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
165 console.log( 'WebAudio decode success!' );
167 this.audioBuffer = buffer;
169 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
171 console.log( 'WebAudio decoded!' );
174 _onDecodeError : function(){
175 console.log( 'WebAudio decode error!' );
176 this._onDecodeComplete();
178 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
181 _onDecodeComplete : function(){
182 X_Closure_correct( this.onDecodeSuccess );
183 delete this.onDecodeSuccess;
184 X_Closure_correct( this.onDecodeError );
185 delete this.onDecodeError;
188 unregister : function( webAudio ){
189 var list = this.webAudioList,
190 i = list.indexOf( webAudio );
194 this.xhr && this.xhr[ 'kill' ]();
204 X_WebAudio = X_AudioBase[ 'inherits' ](
221 'Constructor' : function( disatcher, url, option ){
223 l = X_WebAudio_BUFFER_LIST.length,
227 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
228 * 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。
229 * 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。
231 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
232 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
233 X_WebAudio_fpsFix = true;
237 loader = X_WebAudio_BUFFER_LIST[ i ];
238 if( loader.audioUrl === url ){
239 this.loader = loader;
240 loader.webAudioList.push( this );
246 this.loader = loader = X_WebAudio_BufferLoader( this, url );
249 this.disatcher = disatcher || this;
250 this.setState( option );
252 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
254 if( loader.audioBuffer || loader.errorState ){
255 this._onLoadBufferComplete();
257 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
262 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
265 delete this.audioBuffer;
267 this.playing && this.actualPause();
268 this.bufferSource && this._sourceDispose();
270 this._onended && X_Closure_correct( this._onended );
272 this.gainNode && this.gainNode.disconnect();
274 _onLoadBufferComplete : function( e ){
275 var loader = this.loader,
276 buffer = loader.audioBuffer;
278 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
281 this.error = loader.errorState;
283 this.disatcher[ 'dispatch' ]({
284 type : X_EVENT_ERROR,
285 error : loader.errorState,
286 message : loader.errorState === 1 ?
287 'load buffer network error' :
288 'buffer decode error'
294 this.audioBuffer = buffer;
295 this.duration = buffer.duration * 1000;
297 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
299 console.log( 'WebAudio buffer ready' );
301 this.autoplay && X_Timer_once( 16, this, this.play );
305 actualPlay : function(){
308 console.log( '[WebAudio] play abuf:' + !!this.audioBuffe );
310 if( !this.audioBuffer ){
311 this.autoplay = true;
315 end = X_Audio_getEndTime( this );
316 begin = X_Audio_getStartTime( this, end, true );
318 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
320 if( this.bufferSource ) this._sourceDispose();
321 if( !this.gainNode ){
322 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
323 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
325 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
326 this.bufferSource.buffer = this.audioBuffer;
327 this.bufferSource[ 'connect' ]( this.gainNode );
329 this.gainNode[ 'gain' ].value = this.gain;
331 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
332 // 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
333 // 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
334 //if( this.bufferSource.onended !== undefined ){
335 //console.log( '> use onended' );
336 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
338 this._timerID && X_Timer_remove( this._timerID );
339 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
342 if( this.bufferSource.start ){
343 this.bufferSource.start( 0, begin / 1000, end / 1000 );
345 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
349 this._startPos = begin;
350 this._endPosition = end;
351 this._startTime = X_WebAudio_context.currentTime * 1000;
352 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
355 _sourceDispose : function(){
356 this.bufferSource.disconnect();
357 delete this.bufferSource.onended;
358 delete this.bufferSource;
361 _onInterval : function(){
363 delete this._interval;
364 return X_CALLBACK_UN_LISTEN;
366 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
369 _onEnded : function(){
371 delete this._timerID;
374 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
375 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
378 if( time < 0 ) return;
381 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
382 // ' from:' + this._startPos + ' to:' + this._endPosition );
383 this._timerID = X_Timer_once( -time, this, this._onEnded );
389 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
391 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
396 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
401 actualPause : function(){
402 //if( !this.playing ) return this;
404 console.log( '[WebAudio] pause' );
406 this.seekTime = this.getActualCurrentTime();
408 this._timerID && X_Timer_remove( this._timerID );
409 delete this._timerID;
412 if( this.bufferSource ){
413 if( this.bufferSource.onended ) delete this.bufferSource.onended;
415 this.bufferSource.stop ?
416 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
420 getActualCurrentTime : function(){
421 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
424 afterUpdateState : function( result ){
425 if( result & 2 || result & 1 ){ // seek
429 this.gainNode[ 'gain' ].value = this.gain;
436 X_Audio_BACKENDS.push(
440 backendName : 'WebAudio',
442 canPlay : X_Audio_codecs,
444 detect : function( proxy, source, ext ){
445 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );