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 // AOSP でも WebAudio を不完全に実装するものがある, touch の有無も不明のため一律に切ってしまう
86 !X_UA[ 'AOSP' ] && !( X_UA[ 'ChromeWV' ] < 5 ) &&
87 // Blink HTMLAudio 調査用
89 // Firefox40.0.5 + Windows8 で音声が途中から鳴らなくなる
90 // Firefox41.0.1 + Windows8 で音声が途中から鳴らなくなる
91 !( 40 <= X_UA[ 'Gecko' ] && X_UA[ 'Gecko' ] < 44 && X_UA[ 'Windows' ] ) &&
92 ( window[ 'AudioContext' ] || window[ 'webkitAudioContext' ] ),
93 X_WebAudio_BUFFER_LIST = [],
94 X_WebAudio_need1stTouch = X_UA[ 'iOS' ],
95 X_WebAudio_touchState = X_WebAudio_need1stTouch,
97 X_WebAudio_BufferLoader,
101 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
103 if( X_WebAudio_context ){
105 X_WebAudio_context = new X_WebAudio_context;
107 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
108 'X.WebAudio.BufferLoader',
113 onDecodeSuccess : null,
114 onDecodeError : null,
120 'Constructor' : function( webAudio, url ){
121 this.webAudioList = [ webAudio ];
123 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
124 [ 'listen' ]( X_EVENT_PROGRESS, this )
125 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
126 X_WebAudio_BUFFER_LIST.push( this );
129 handleEvent : function( e ){
133 case X_EVENT_PROGRESS :
134 for( i = 0, l = this.webAudioList.length; i < l; ++i ){
135 this.webAudioList[ i ][ 'dispatch' ]( { type : X_EVENT_PROGRESS, 'percent' : e[ 'percent' ] } );
139 case X_EVENT_SUCCESS :
141 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
143 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
144 // 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
145 // 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)。
146 // ただし iOS 8.1.2 では エラーになる
147 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
148 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
150 if( X_WebAudio_context[ 'decodeAudioData' ] ){
151 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
152 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
153 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
157 case X_EVENT_COMPLETE :
159 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
162 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
166 _onDecodeSuccess : function( buffer ){
167 this.onDecodeSuccess && this._onDecodeComplete();
171 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
175 console.log( 'WebAudio decode success!' );
177 this.audioBuffer = buffer;
179 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
181 console.log( 'WebAudio decoded!' );
184 _onDecodeError : function(){
185 console.log( 'WebAudio decode error!' );
186 this._onDecodeComplete();
188 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
191 _onDecodeComplete : function(){
192 X_Closure_correct( this.onDecodeSuccess );
193 delete this.onDecodeSuccess;
194 X_Closure_correct( this.onDecodeError );
195 delete this.onDecodeError;
198 unregister : function( webAudio ){
199 var list = this.webAudioList,
200 i = list.indexOf( webAudio );
204 this.xhr && this.xhr[ 'kill' ]();
214 X_WebAudio = X_AudioBase[ 'inherits' ](
231 'Constructor' : function( disatcher, url, option ){
233 l = X_WebAudio_BUFFER_LIST.length,
237 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
238 * 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。
239 * 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。
241 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
242 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
243 X_WebAudio_fpsFix = true;
247 loader = X_WebAudio_BUFFER_LIST[ i ];
248 if( loader.audioUrl === url ){
249 this.loader = loader;
250 loader.webAudioList.push( this );
256 this.loader = loader = X_WebAudio_BufferLoader( this, url );
259 this.disatcher = disatcher || this;
260 this.setState( option );
262 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
264 if( loader.audioBuffer || loader.errorState ){
265 this._onLoadBufferComplete();
267 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
272 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
275 delete this.audioBuffer;
277 this.playing && this.actualPause();
278 this.bufferSource && this._sourceDispose();
280 this._onended && X_Closure_correct( this._onended );
282 this.gainNode && this.gainNode.disconnect();
284 _onLoadBufferComplete : function( e ){
285 var loader = this.loader,
286 buffer = loader.audioBuffer;
288 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
291 this.error = loader.errorState;
293 this.disatcher[ 'dispatch' ]({
294 type : X_EVENT_ERROR,
295 error : loader.errorState,
296 message : loader.errorState === 1 ?
297 'load buffer network error' :
298 'buffer decode error'
304 this.audioBuffer = buffer;
305 this.duration = buffer.duration * 1000;
307 this.disatcher[ 'asyncDispatch' ]( X_WebAudio_touchState ? X_EVENT_MEDIA_TOUCH_FOR_LOAD : X_EVENT_READY );
310 actualPlay : function(){
313 console.log( '[WebAudio] play abuf:' + !!this.audioBuffer );
315 if( !this.audioBuffer ){
316 this._playReserved = true;
320 if( X_WebAudio_touchState ){
321 e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];
322 if( !e || !e[ 'pointerType' ] ){
323 // alert( 'タッチイベント以外での play! ' + ( e ? e.type : '' ) );
326 // http://qiita.com/uupaa/items/e5856e3cb2a9fc8c5507
327 // iOS9 + touchstart で呼んでいた場合、 X_ViewPort['listenOnce']('pointerup',this,this.actualPlay())
328 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
330 X_WebAudio_touchState = false;
332 end = X_Audio_getEndTime( this );
333 begin = X_Audio_getStartTime( this, end, true );
335 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
337 if( this.bufferSource ) this._sourceDispose();
338 if( !this.gainNode ){
339 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
340 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
342 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
343 this.bufferSource.buffer = this.audioBuffer;
344 this.bufferSource[ 'connect' ]( this.gainNode );
346 this.gainNode[ 'gain' ].value = this.gain;
348 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
349 // 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
350 // 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
351 //if( this.bufferSource.onended !== undefined ){
352 //console.log( '> use onended' );
353 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
355 this._timerID && X_Timer_remove( this._timerID );
356 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
359 if( this.bufferSource.start ){
360 this.bufferSource.start( 0, begin / 1000, end / 1000 );
362 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
366 this._startPos = begin;
367 this._endPosition = end;
368 this._startTime = X_WebAudio_context.currentTime * 1000;
369 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
372 _sourceDispose : function(){
373 this.bufferSource.disconnect();
374 //delete this.bufferSource.onended;
375 delete this.bufferSource;
378 _onInterval : function(){
380 delete this._interval;
381 return X_CALLBACK_UN_LISTEN;
383 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
386 _onEnded : function(){
388 delete this._timerID;
391 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
392 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
395 if( time < 0 ) return;
398 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
399 // ' from:' + this._startPos + ' to:' + this._endPosition );
400 this._timerID = X_Timer_once( -time, this, this._onEnded );
406 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
408 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
413 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
418 actualPause : function(){
419 console.log( '[WebAudio] pause' );
421 this._timerID && X_Timer_remove( this._timerID );
422 delete this._timerID;
425 if( this.bufferSource ){
426 //if( this.bufferSource.onended ) delete this.bufferSource.onended;
428 this.bufferSource.stop ?
429 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
433 getActualCurrentTime : function(){
434 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
437 afterUpdateState : function( result ){
438 if( result & 2 || result & 1 ){ // seek
442 this.gainNode[ 'gain' ].value = this.gain;
449 X_Audio_BACKENDS.push(
453 backendName : 'WebAudio',
455 canPlay : X_Audio_codecs,
457 detect : function( proxy, source, ext ){
458 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );