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
86 !X_UA[ 'AOSP' ] && !( X_UA[ 'ChromeWV' ] < 5 ) &&
88 // Firefox40.0.5 + Windows8 で音声が途中から鳴らなくなる
89 // Firefox41.0.1 + Windows8 で音声が途中から鳴らなくなる
90 !( 40 <= X_UA[ 'Gecko' ] && X_UA[ 'Gecko' ] < 42 && X_UA[ 'Windows' ] ) &&
91 ( window[ 'AudioContext' ] || window[ 'webkitAudioContext' ] ),
92 X_WebAudio_BUFFER_LIST = [],
93 X_WebAudio_need1stTouch = X_UA[ 'iOS' ],
94 X_WebAudio_touchState = X_WebAudio_need1stTouch,
96 X_WebAudio_BufferLoader,
100 * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
102 if( X_WebAudio_context ){
104 X_WebAudio_context = new X_WebAudio_context;
106 X_WebAudio_BufferLoader = X_EventDispatcher[ 'inherits' ](
107 'X.WebAudio.BufferLoader',
112 onDecodeSuccess : null,
113 onDecodeError : null,
119 'Constructor' : function( webAudio, url ){
120 this.webAudioList = [ webAudio ];
122 this.xhr = X[ 'Net' ]( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
123 [ 'listen' ]( X_EVENT_PROGRESS, this )
124 [ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
125 X_WebAudio_BUFFER_LIST.push( this );
128 handleEvent : function( e ){
132 case X_EVENT_PROGRESS :
133 for( i = 0, l = this.webAudioList.length; i < l; ++i ){
134 this.webAudioList[ i ][ 'dispatch' ]( { type : X_EVENT_PROGRESS, 'percent' : e[ 'percent' ] } );
138 case X_EVENT_SUCCESS :
140 // https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
142 // http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
143 // 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
144 // 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)。
145 // ただし iOS 8.1.2 では エラーになる
146 if( X_UA[ 'iOS' ] < 8 || !X_WebAudio_context[ 'decodeAudioData' ] ){
147 this._onDecodeSuccess( X_WebAudio_context[ 'createBuffer' ]( e.response, false ) );
149 if( X_WebAudio_context[ 'decodeAudioData' ] ){
150 X_WebAudio_context[ 'decodeAudioData' ]( e.response,
151 this.onDecodeSuccess = X_Closure_create( this, this._onDecodeSuccess ),
152 this.onDecodeError = X_Closure_create( this, this._onDecodeError ) );
156 case X_EVENT_COMPLETE :
158 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
161 this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
165 _onDecodeSuccess : function( buffer ){
166 this.onDecodeSuccess && this._onDecodeComplete();
170 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
174 console.log( 'WebAudio decode success!' );
176 this.audioBuffer = buffer;
178 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
180 console.log( 'WebAudio decoded!' );
183 _onDecodeError : function(){
184 console.log( 'WebAudio decode error!' );
185 this._onDecodeComplete();
187 this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
190 _onDecodeComplete : function(){
191 X_Closure_correct( this.onDecodeSuccess );
192 delete this.onDecodeSuccess;
193 X_Closure_correct( this.onDecodeError );
194 delete this.onDecodeError;
197 unregister : function( webAudio ){
198 var list = this.webAudioList,
199 i = list.indexOf( webAudio );
203 this.xhr && this.xhr[ 'kill' ]();
213 X_WebAudio = X_AudioBase[ 'inherits' ](
230 'Constructor' : function( disatcher, url, option ){
232 l = X_WebAudio_BUFFER_LIST.length,
236 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
237 * 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。
238 * 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。
240 if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] && !X_WebAudio_fpsFix ){
241 X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
242 X_WebAudio_fpsFix = true;
246 loader = X_WebAudio_BUFFER_LIST[ i ];
247 if( loader.audioUrl === url ){
248 this.loader = loader;
249 loader.webAudioList.push( this );
255 this.loader = loader = X_WebAudio_BufferLoader( this, url );
258 this.disatcher = disatcher || this;
259 this.setState( option );
261 this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, this.onKill );
263 if( loader.audioBuffer || loader.errorState ){
264 this._onLoadBufferComplete();
266 loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
271 this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
274 delete this.audioBuffer;
276 this.playing && this.actualPause();
277 this.bufferSource && this._sourceDispose();
279 this._onended && X_Closure_correct( this._onended );
281 this.gainNode && this.gainNode.disconnect();
283 _onLoadBufferComplete : function( e ){
284 var loader = this.loader,
285 buffer = loader.audioBuffer;
287 e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
290 this.error = loader.errorState;
292 this.disatcher[ 'dispatch' ]({
293 type : X_EVENT_ERROR,
294 error : loader.errorState,
295 message : loader.errorState === 1 ?
296 'load buffer network error' :
297 'buffer decode error'
303 this.audioBuffer = buffer;
304 this.duration = buffer.duration * 1000;
306 this.disatcher[ 'asyncDispatch' ]( X_WebAudio_touchState ? X_EVENT_MEDIA_TOUCH_FOR_LOAD : X_EVENT_READY );
309 actualPlay : function(){
312 console.log( '[WebAudio] play abuf:' + !!this.audioBuffer );
314 if( !this.audioBuffer ){
315 this._playReserved = true;
319 if( X_WebAudio_touchState ){
320 e = X_EventDispatcher_CURRENT_EVENTS[ X_EventDispatcher_CURRENT_EVENTS.length - 1 ];
321 if( !e || !e[ 'pointerType' ] ){
322 // alert( 'タッチイベント以外での play! ' + ( e ? e.type : '' ) );
325 this.disatcher[ 'asyncDispatch' ]( X_EVENT_READY );
327 X_WebAudio_touchState = false;
329 end = X_Audio_getEndTime( this );
330 begin = X_Audio_getStartTime( this, end, true );
332 console.log( '[WebAudio] play ' + begin + ' -> ' + end );
334 if( this.bufferSource ) this._sourceDispose();
335 if( !this.gainNode ){
336 this.gainNode = X_WebAudio_context[ 'createGain' ] ? X_WebAudio_context[ 'createGain' ]() : X_WebAudio_context[ 'createGainNode' ]();
337 this.gainNode[ 'connect' ]( X_WebAudio_context[ 'destination' ] );
339 this.bufferSource = X_WebAudio_context[ 'createBufferSource' ]();
340 this.bufferSource.buffer = this.audioBuffer;
341 this.bufferSource[ 'connect' ]( this.gainNode );
343 this.gainNode[ 'gain' ].value = this.gain;
345 // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
346 // 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
347 // 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
348 //if( this.bufferSource.onended !== undefined ){
349 //console.log( '> use onended' );
350 //this.bufferSource.onended = this._onended || ( this._onended = X_Closure_create( this, this._onEnded ) );
352 this._timerID && X_Timer_remove( this._timerID );
353 this._timerID = X_Timer_once( end - begin, this, this._onEnded );
356 if( this.bufferSource.start ){
357 this.bufferSource.start( 0, begin / 1000, end / 1000 );
359 this.bufferSource[ 'noteGrainOn' ]( 0, begin / 1000, end / 1000 );
363 this._startPos = begin;
364 this._endPosition = end;
365 this._startTime = X_WebAudio_context.currentTime * 1000;
366 this._interval = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
369 _sourceDispose : function(){
370 this.bufferSource.disconnect();
371 delete this.bufferSource.onended;
372 delete this.bufferSource;
375 _onInterval : function(){
377 delete this._interval;
378 return X_CALLBACK_UN_LISTEN;
380 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
383 _onEnded : function(){
385 delete this._timerID;
388 time = X_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
389 //console.log( '> onEnd ' + ( this.playing && ( X_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
392 if( time < 0 ) return;
395 //console.log( '> onEnd crt:' + ( X_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
396 // ' from:' + this._startPos + ' to:' + this._endPosition );
397 this._timerID = X_Timer_once( -time, this, this._onEnded );
403 if( !( this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_CALLBACK_PREVENT_DEFAULT ) ){
405 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
410 this.disatcher[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
415 actualPause : function(){
416 console.log( '[WebAudio] pause' );
418 this._timerID && X_Timer_remove( this._timerID );
419 delete this._timerID;
422 if( this.bufferSource ){
423 if( this.bufferSource.onended ) delete this.bufferSource.onended;
425 this.bufferSource.stop ?
426 this.bufferSource.stop( 0 ) : this.bufferSource[ 'noteOff' ]( 0 );
430 getActualCurrentTime : function(){
431 return X_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
434 afterUpdateState : function( result ){
435 if( result & 2 || result & 1 ){ // seek
439 this.gainNode[ 'gain' ].value = this.gain;
446 X_Audio_BACKENDS.push(
450 backendName : 'WebAudio',
452 canPlay : X_Audio_codecs,
454 detect : function( proxy, source, ext ){
455 proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );