X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=0.6.x%2Fjs%2F07_audio%2F01_XWebAudio.js;h=00cf9c3edc27ab914580c8e73803d06ac01fc2aa;hb=0a4e04fb0af6e1b2e452d1a8c0822e723d32a0ee;hp=8939e403f09665c6eb1f507ec56bca3295797c43;hpb=4533342ee7fb302488e76a207a129bb18866c00f;p=pettanr%2FclientJs.git

diff --git a/0.6.x/js/07_audio/01_XWebAudio.js b/0.6.x/js/07_audio/01_XWebAudio.js
index 8939e40..00cf9c3 100644
--- a/0.6.x/js/07_audio/01_XWebAudio.js
+++ b/0.6.x/js/07_audio/01_XWebAudio.js
@@ -1,88 +1,55 @@
 
-var X_Audio_WebAudio_context = window.webkitAudioContext || window.AudioContext,
+var X_Audio_WebAudio_context = !X_UA[ 'iPhone_4s' ]  && !X_UA[ 'iPad_2Mini1' ]  && !X_UA[ 'iPod_4' ]  &&
+								!( X_UA[ 'Gecko' ] && X_UA[ 'Android' ] ) &&
+								( window.AudioContext || window.webkitAudioContext ),
+	X_Audio_BUFFER_LIST      = [],
 	X_Audio_WebAudioWrapper;
 
-if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_context ){
+/*
+ * iPhone 4s 以下、iPad2以下、iPad mini 1以下, iPod touch 4G 以下は不可
+ */
+if( X_Audio_WebAudio_context ){
 	
 	X_Audio_WebAudio_context = new X_Audio_WebAudio_context;
 	
-	function X_Audio_WebAudio_getBuffer( url ){
-		var i = 0, l = X_Audio_WRAPPER_LIST.length;
-		for( i = 0; i < l; ++i ){
-			if( X_Audio_WRAPPER_LIST[ i ].url === url ) return X_Audio_WRAPPER_LIST[ i ];
-		};
-	};
-	
-	X_Audio_WebAudioWrapper = X.EventDispatcher.inherits(
-		'X.AV.WebAudioWrapper',
-		X.Class.POOL_OBJECT,
+	X_Audio_BufferLoader = X_EventDispatcher[ 'inherits' ](
+		'X.AV.WebAudioBufferLoader',
+		X_Class.POOL_OBJECT,
 		{
-			
 			url             : '',
-			proxy           : null,
-			
-			startTime       : 0,
-			endTime         : -1,
-			loopStartTime   : -1,
-			loopEndTime     : -1,
-			seekTime        : -1,
-			duration        : 0,
-			
-			playing         : false,
-			error           : 0,			
-			loop            : false,
-			looped          : false,
-			autoplay        : false,
-			volume          : 0.5,
-						
-			_startTime      : 0,
-			_endTime        : 0,
-			_playTime       : 0,
-            _timerID        : 0,
-            _interval       : 0,
-          	buffer          : null,
-          	source          : null,
-            gainNode        : null,
-            _onended        : null,
-            
             xhr             : null,
             onDecodeSuccess : null,
             onDecodeError   : null,
             
-			Constructor : function( proxy, url, option ){
-				var audio = X_Audio_WebAudio_getBuffer( url );
-				
+            buffer          : null,
+            error           : 0,
+            webAudioList    : null,
+            
+			Constructor : function( webAudio, url ){
+				this.webAudioList = [ webAudio ];
 				this.url = url;
-				this.closed = false;
-				this.proxy  = proxy;
-				
-				X_AudioWrapper_updateStates( this, option );
-				
-				if( audio && audio.buffer ){
-					this._onDecodeSuccess( audio.buffer );
-				} else
-				if( audio ){
-					// TODO 当てにしていたaudioがclose 等した場合
-					audio.proxy.listenOnce( 'canplaythrough', this, this._onBufferReady );
-				} else {
-					this.xhr = X.Net.xhrGet( url, 'arraybuffer' )
-									.listen( X.Event.PROGRESS, this )
-									.listenOnce( [ X.Event.SUCCESS, X.Event.COMPLETE, X.Event.CANCELED ], this );					
-				};
+				this.xhr = X.Net( { 'xhr' : url, 'dataType' : 'arraybuffer' } )
+									[ 'listen' ]( X_EVENT_PROGRESS, this )
+									[ 'listenOnce' ]( [ X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
 			},
 			
 			handleEvent : function( e ){
 				switch( e.type ){
-					case X.Event.PROGRESS :
-						e.percent ?
-							this.proxy.dispatch( { type : 'progress', percent : e.percent } ) :
-							this.proxy.dispatch( 'loadstart' );
+					case X_EVENT_PROGRESS :
+						this[ 'dispatch' ]( { type : 'progress', 'percent' : e[ 'percent' ] } );
 						return;
 					
-					case X.Event.SUCCESS :
-						console.log( 'WebAudio xhr success! ' + !!X_Audio_WebAudio_context.decodeAudioData );
+					case X_EVENT_SUCCESS :
 					// TODO 旧api
 					// https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
+					
+					// http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
+					// 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
+					// 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）。
+					// ただし iOS 8.1.2 では エラーになる
+						if( X_Audio_WebAudio_context.createBuffer && X_UA[ 'iOS' ] < 8 ){
+							this._onDecodeSuccess( X_Audio_WebAudio_context.createBuffer( e.data, false ) );
+						} else
 						if( X_Audio_WebAudio_context.decodeAudioData ){
 							X_Audio_WebAudio_context.decodeAudioData( e.data,
 								this.onDecodeSuccess = X_Callback_create( this, this._onDecodeSuccess ),
@@ -92,17 +59,12 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 						};
 						break;
 
-					case X.Event.CANCELED :
-						this.error = 1;
-						this.proxy.dispatch( 'aborted' );
-						break;
-
-					case X.Event.COMPLETE :
-						this.error = 2;				
-						this.proxy.asyncDispatch( { type : 'error', message : 'xhr error' } );
+					case X_EVENT_COMPLETE :
+						this.error = 1;				
+						this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
 						break;
 				};
-				this.xhr.unlisten( [ X.Event.PROGRESS, X.Event.SUCCESS, X.Event.COMPLETE, X.Event.CANCELED ], this );
+				this.xhr[ 'unlisten' ]( [ X_EVENT_PROGRESS, X_EVENT_SUCCESS, X_EVENT_COMPLETE ], this );
 				delete this.xhr;
 			},
 			
@@ -112,28 +74,23 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 					this.onDecodeSuccess && this._onDecodeComplete();
 					
 	                if ( !buffer ) {
-	                    this.proxy.asyncDispatch( { type : 'error', message : 'buffer is ' + buffer } );
+	                	this.error = 2;
+	                    this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
 	                    return;
 	                };
 	
 	                this.buffer   = buffer;
-	                this.duration = buffer.duration * 1000;
-	                
-	                this.proxy.asyncDispatch( 'loadedmetadata' );
-	                this.proxy.asyncDispatch( 'loadeddata' );
-	                this.proxy.asyncDispatch( 'canplay' );
-	                this.proxy.asyncDispatch( 'canplaythrough' );
-	                
-	                this.autoplay && X.Timer.once( 16, this, this.play );
-	                
+
+					this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
+
 	                console.log( 'WebAudio decoded!' );
 				},
 				
 				_onDecodeError : function(){
 					console.log( 'WebAudio decode error!' );
 					this._onDecodeComplete();
-					this.error = 3;
-					this.proxy.asyncDispatch( { type : 'error', message : 'decode error' } );
+					this.error = 2;
+					this[ 'asyncDispatch' ]( X_EVENT_COMPLETE );
 				},
 				
 				_onDecodeComplete : function(){
@@ -142,36 +99,100 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 					X_Callback_correct( this.onDecodeError );
 					delete this.onDecodeError;
 				},
-				
-				_onBufferReady : function( e ){
-					var audio = X_Audio_WebAudio_getBuffer( this.url );
-					this._onDecodeSuccess( audio.buffer );
-				},
 			
-			close : function(){	
-	            delete this.buffer;
-	
-				if( this.xhr ) this.xhr.close();
-				
-				if( this.onDecodeSuccess ){
-					// 回収はあきらめる、、、
+			unregister : function( webAudio ){
+				var list = this.webAudioList,
+					i    = list.indexOf( webAudio );
+				if( 0 < i ){
+					list.splice( i, 1 );
+					if( list.length ){
+						this.xhr && this.xhr[ 'kill' ]();
+						this[ 'kill' ]();
+					};
 				};
+			}
+			
+		}
+	);
 	
-				this.playing  && this.pause();
-	            this.source   && this._sourceDispose();
-	
-	            this._onended && X_Callback_correct( this._onended );	
 	
-	            this.gainNode && this.gainNode.disconnect();
-			},
+	X_Audio_WebAudioWrapper = X_Audio_AbstractAudioBackend[ 'inherits' ](
+		'X.AV.WebAudioWrapper',
+		X_Class.POOL_OBJECT,
+		{
 			
-				_sourceDispose : function(){
-		            this.source.disconnect();
-		            delete this.source.onended;
-		            delete this.source;
-		        },
+			loader          : null,
+						
+			_startPos       : 0,
+			_endPosition    : 0,
+			_startTime      : 0,
+            _timerID        : 0,
+            _interval       : 0,
+          	buffer          : null,
+          	source          : null,
+            gainNode        : null,
+            _onended        : null,
+            
+			Constructor : function( target, url, option ){				
+				var i = 0,
+					l = X_Audio_BUFFER_LIST.length,
+					loader;
+
+				for( ; i < l; ++i ){
+					loader = X_Audio_BUFFER_LIST[ i ];
+					if( loader.url === url ){
+						this.loader = loader;
+						loader.webAudioList.push( this );
+						break;
+					};
+				};
+				
+				if( !this.loader ){
+					this.loader = loader = new X_Audio_BufferLoader( this, url );
+				};
+				
+				this.target  = target || this;
+				
+				this.setState( option );
+				
+				this[ 'listenOnce' ]( X_EVENT_KILL_INSTANCE, X_WebAudio_handleEvent );
+				
+				if( loader.buffer || loader.error ){
+					this._onLoadBufferComplete();
+				} else {
+					loader[ 'listenOnce' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
+				};
+			},
+				_onLoadBufferComplete : function( e ){
+					var loader = this.loader,
+						buffer = loader.buffer;
+					
+					e && loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete );
+					
+	                if ( !buffer ) {
+	                	this.error = loader.error;
+	                	
+	                    this.target[ 'dispatch' ]({
+								type    : X_EVENT_ERROR,
+								error   : loader.error,
+								message : loader.error === 1 ?
+											'load buffer network error' :
+											'buffer decode error'
+							});
+						this[ 'kill' ]();
+	                    return;
+	                };
+	
+	                this.buffer   = buffer;
+	                this.duration = buffer.duration * 1000;
+
+					this.target[ 'asyncDispatch' ]( X_EVENT_READY );
+	                
+	                this.autoplay && X_Timer_once( 16, this, this.play );
+					
+				},
 			
-			play : function(){
+			actualPlay : function(){
 				var begin, end;
 				
 	            if( !this.buffer ){
@@ -193,17 +214,16 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 	            this.source.buffer = this.buffer;
 	            this.source.connect( this.gainNode );
 	            
-	            this.gainNode.gain.value = this.volume;
-	            
-	            this._timerID && X.Timer.remove( this._timerID );
+	            this.gainNode.gain.value = this.gain;
 	            
 	            // おかしい、stop 前に外していても呼ばれる、、、@Firefox33.1
-	            // 破棄された X.Callback が呼ばれて、obj._() でエラーになる。Firefox では、onended は使わない
+	            // 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
                 if( false && this.source.onended !== undefined ){
                 	//console.log( '> use onended' );
                 	this.source.onended = this._onended || ( this._onended = X_Callback_create( this, this._onEnded ) );
                 } else {
-					this._timerID = X.Timer.once( end - begin, this, this._onEnded );
+                	this._timerID && X_Timer_remove( this._timerID );
+					this._timerID = X_Timer_once( end - begin, this, this._onEnded );
                 };
 	
 	            if( this.source.start ){
@@ -212,19 +232,25 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 	                this.source.noteGrainOn( 0, begin / 1000, end / 1000 );
 	            };
 	            
-	            this.playing    = true;
-	            this._startTime = begin;
-	            this._endTime   = end;
-	            this._playTime  = X_Audio_WebAudio_context.currentTime * 1000;
-	            this._interval  = this._interval || X.Timer.add( 1000, 0, this, this._onInterval );
+	            this.playing      = true;
+	            this._startPos    = begin;
+	            this._endPosition = end;
+	            this._startTime   = X_Audio_WebAudio_context.currentTime * 1000;
+	            this._interval    = this._interval || X_Timer_add( 1000, 0, this, this._onInterval );
 			},
+			
+				_sourceDispose : function(){
+		            this.source.disconnect();
+		            delete this.source.onended;
+		            delete this.source;
+		        },
 
 				_onInterval : function(){
 					if( !this.playing ){
 						delete this._interval;
 						return X_Callback_UN_LISTEN;
 					};
-					this.proxy.dispatch( 'timeupdate' );
+					this.target[ 'dispatch' ]( X_EVENT_MEDIA_PLAYING );
 				},
 						
 				_onEnded : function(){
@@ -232,38 +258,41 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 					delete this._timerID;
 					
 		            if( this.playing ){
-		            	time = X_Audio_WebAudio_context.currentTime * 1000 - this._playTime - this._endTime + this._startTime | 0;
-		            	//console.log( '> onEnd ' + ( this.playing && ( X_Audio_WebAudio_context.currentTime * 1000 - this._playTime ) ) + ' < ' + ( this._endTime - this._startTime ) );
+		            	time = X_Audio_WebAudio_context.currentTime * 1000 - this._startTime - this._endPosition + this._startPos | 0;
+		            	//console.log( '> onEnd ' + ( this.playing && ( X_Audio_WebAudio_context.currentTime * 1000 - this._startTime ) ) + ' < ' + ( this._endPosition - this._startPos ) );
 		            	if( this._onended ){
 			            	// Firefox 用の対策,,,
 			            	if( time < 0 ) return;
 		            	} else {
 		            		if( time < 0 ){
-		            			console.log( '> onEnd ' + time );
-		            			this._timerID = X.Timer.once( -time, this, this._onEnded );
+		            			console.log( '> onEnd crt:' + ( X_Audio_WebAudio_context.currentTime * 1000 ) + ' startTime:' + this._startTime +
+		            				' from:' + this._startPos + ' to:' + this._endPosition );
+		            			this._timerID = X_Timer_once( -time, this, this._onEnded );
 		            			return;
 		            		};
 		            	};
 		            	
-		            	if( this.loop ){
-		            		this.looped = true;
-		            		this.play();
-		            		this.proxy.dispatch( 'looped' );
+		            	if( this.autoLoop ){
+		            		if( !( this.target[ 'dispatch' ]( X_EVENT_MEDIA_BEFORE_LOOP ) & X_Callback_PREVENT_DEFAULT ) ){
+		            			this.looped = true;
+		            			this.target[ 'dispatch' ]( X_EVENT_MEDIA_LOOPED );
+		            			this.actualPlay();
+			            	};
 		            	} else {
-		            		this.pause();
-		            		this.proxy.dispatch( 'ended' );
+		            		this.actualPause();
+		            		this.target[ 'dispatch' ]( X_EVENT_MEDIA_ENDED );
 		            	};
 		            };
 				},
 			
-			pause : function(){
+			actualPause : function(){
 				if( !this.playing ) return this;
 				
 				console.log( '[WebAudio] pause' );
 				
-				this.seekTime = this.state().currentTime;
+				this.seekTime = this.getActualCurrentTime();
 				
-	            this._timerID && X.Timer.remove( this._timerID );
+	            this._timerID && X_Timer_remove( this._timerID );
 				delete this._timerID;
 				delete this.playing;
 
@@ -274,55 +303,61 @@ if( !X_UA.iPhone_4s && !X_UA.iPod_2Mini1 && !X_UA.iPod_4 && X_Audio_WebAudio_con
 	                	this.source.stop( 0 ) : this.source.noteOff( 0 );
 	            };
 			},
-	
-			state : function( obj ){
-				var result;
-				
-				if( obj === undefined ){
-				    return {
-				    	startTime     : this.startTime,
-				    	endTime       : this.endTime < 0 ? this.duration : this.endTime,
-				    	loopStartTime : this.loopStartTime < 0 ? this.startTime : this.loopStartTime,
-				    	loopEndTime   : this.loopEndTime < 0 ? ( this.endTime || this.duration ) : this.loopEndTime,
-				        loop          : this.loop,
-				        looped        : this.looped,
-				        volume        : this.volume,
-				        playing       : this.playing,			        
-				        duration      : this.duration,
-				        
-				        currentTime   : this.playing ? ( X_Audio_WebAudio_context.currentTime * 1000 - this._playTime ) : this.seekTime,
-				        error         : this.error
-				    };
-				};
 			
-				result = X_AudioWrapper_updateStates( this, obj );
-				
-				if( result & 2 ){ // seek
-	            	this.play();
-				} else
-				if( result & 1 ){
-					this.play();
+			getActualCurrentTime : function(){
+				return X_Audio_WebAudio_context.currentTime * 1000 - this._startTime + this._startPos | 0;
+			},
+			
+			afterUpdateState : function( result ){
+				if( result & 2 || result & 1 ){ // seek
+	            	this.actualPlay();
 				} else
 				if( result & 4 ){
-	               this.gainNode.gain.value = this.volume;
+	               this.gainNode.gain.value = this.gain;
 				};
 			}
 
 		}
 	);
+
+	function X_WebAudio_handleEvent( e ){
+		switch( e.type ){
+
+			case X_EVENT_KILL_INSTANCE :
+				this.loader[ 'unlisten' ]( X_EVENT_COMPLETE, this, this._onLoadBufferComplete )
+					.unregister( this );
+
+				delete this.buffer;
+				
+				this.playing  && this.actualPause();
+	            this.source   && this._sourceDispose();
 	
+	            this._onended && X_Callback_correct( this._onended );	
+	
+	            this.gainNode && this.gainNode.disconnect();
+				break;
+		};
+	};
+
+	/*
+	 * http://qiita.com/sou/items/5688d4e7d3a37b4e2ff1
+	 * 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。
+	 * 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。
+	 */
+	if( X_UA[ 'Android' ] && X_UA[ 'Chrome' ] ){
+		X_Node_systemNode.create( 'div', { id : 'fps-slowdown-make-sound-noisy' } );
+	};
+
 	X_Audio_BACKENDS.push(
 		{
 			backendName : 'Web Audio',
 
+			// 
 			detect : function( proxy, source, ext ){
-				var ok = ext === 'mp3' || ext === 'ogg';
-				
-				proxy.asyncDispatch( ok ? 'support' : 'nosupport' );
+				proxy[ 'asyncDispatch' ]( { type : X_EVENT_COMPLETE, canPlay : X_Audio_codecs[ ext ] } );
 			},
 			
 			klass : X_Audio_WebAudioWrapper
 		}
 	);
-
 };