binaural-fir.min.js

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i=t("babel-runtime/helpers/create-class")["default"],o=t("babel-runtime/helpers/class-call-check")["default"],r=t("babel-runtime/helpers/interop-require-default")["default"];Object.defineProperty(n,"__esModule",{value:!0});var s=t("kdt"),a=r(s),u=function(){function t(e){o(this,t),this.audioContext=e.audioContext,this.hrtfDataset=[],this.hrtfDatasetLength=0,this.tree=void 0,this.position={},this.crossfadeDuration=.02,this.input=this.audioContext.createGain(),this.state="A",this.target=void 0,this.pendingPosition=void 0,this.convolverA=new l({audioContext:this.audioContext}),this.convolverA.gain.value=1,this.input.connect(this.convolverA.input),this.convolverB=new l({audioContext:this.audioContext}),this.convolverB.gain.value=0,this.input.connect(this.convolverB.input)}return i(t,[{key:"connect",value:function(t){return this.convolverA.connect(t),this.convolverB.connect(t),this}},{key:"disconnect",value:function(t){return this.convolverA.disconnect(t),this.convolverB.disconnect(t),this}},{key:"distance",value:function(t,e){return Math.pow(t.x-e.x,2)+Math.pow(t.y-e.y,2)+Math.pow(t.z-e.z,2)}},{key:"setPosition",value:function(t,e,n){var i=this.getRealCoordinates(t,e,n);if(i.azimuth!==this.position.azimuth||i.elevation!==this.position.elevation||i.distance!==this.position.distance)switch(this.state){case"A":this.state="A2B",this.pendingPosition=void 0,this._crossfadeTo("B",i);break;case"B":this.state="B2A",this.pendingPosition=void 0,this._crossfadeTo("A",i);break;case"A2B":this.pendingPosition=i;break;case"B2A":this.pendingPosition=i}}},{key:"_crossfadeTo",value:function(t,e){function n(t){t.audioContext.currentTime>r&&(window.clearInterval(s),t.state=t.target,t.target=void 0,t.pendingPosition&&t.setPosition(t.pendingPosition.azimuth,t.pendingPosition.elevation,t.pendingPosition.distance))}this.position=e,this.target=t;var i=this.getHRTF(this.position.azimuth,this.position.elevation,this.position.distance),o=this.audioContext.currentTime,r=o+this.crossfadeDuration;switch(this.target){case"A":this.convolverA.buffer=i,this.convolverB.gain.linearRampToValueAtTime(0,r),this.convolverA.gain.linearRampToValueAtTime(1,r);break;case"B":this.convolverB.buffer=i,this.convolverA.gain.linearRampToValueAtTime(0,r),this.convolverB.gain.linearRampToValueAtTime(1,r)}var s=window.setInterval(n,10,this)}},{key:"setCrossfadeDuration",value:function(t){if(t)return this.crossfadeDuration=t/1e3,this;throw new Error("CrossfadeDuration setting error")}},{key:"getCrossfadeDuration",value:function(){return 1e3*this.crossfadeDuration}},{key:"getPosition",value:function(){return this.position}},{key:"getHRTF",value:function(t,e,n){var i=this.getNearestPoint(t,e,n);return i.buffer}},{key:"sphericalToCartesian",value:function(t,e,n){return{x:n*Math.sin(t),y:n*Math.cos(t),z:n*Math.sin(e)}}},{key:"getRealCoordinates",value:function(t,e,n){var i=this.getNearestPoint(t,e,n);return{azimuth:i.azimuth,elevation:i.elevation,distance:i.distance}}},{key:"getNearestPoint",value:function(t,e,n){var i=t*Math.PI/180,o=e*Math.PI/180,r=this.sphericalToCartesian(i,o,n),s=this.tree.nearest(r,1)[0];return s[0]}},{key:"HRTFDataset",set:function(t){this.hrtfDataset=t,this.hrtfDatasetLength=this.hrtfDataset.length;for(var e=0;e<this.hrtfDatasetLength;e++){var n=this.hrtfDataset[e],i=n.azimuth*Math.PI/180,o=n.elevation*Math.PI/180,r=this.sphericalToCartesian(i,o,n.distance);n.x=r.x,n.y=r.y,n.z=r.z}this.tree=a["default"].createKdTree(this.hrtfDataset,this.distance,["x","y","z"])},get:function(){return this.hrtfDataset}}]),t}();n["default"]=u;var l=function(){function t(e){o(this,t),this.audioContext=e.audioContext,this.gainNode=this.audioContext.createGain(),this.convNode=this.audioContext.createConvolver(),this.convNode.normalize=!1,this.gainNode.connect(this.convNode),this.oscillatorNode=this.audioContext.createOscillator(),this.gainOscillatorNode=this.audioContext.createGain(),this.oscillatorNode.connect(this.gainOscillatorNode),this.gainOscillatorNode.connect(this.gainNode),this.gainOscillatorNode.gain.value=0,this.oscillatorNode.start(0)}return i(t,[{key:"connect",value:function(t){return this.convNode.connect(t),this}},{key:"disconnect",value:function(t){return this.convNode.disconnect(t),this}},{key:"input",get:function(){return this.gainNode}},{key:"gain",get:function(){return this.gainNode.gain}},{key:"buffer",set:function(t){this.convNode.buffer=t}}]),t}();e.exports=n["default"]},{"babel-runtime/helpers/class-call-check":4,"babel-runtime/helpers/create-class":5,"babel-runtime/helpers/interop-require-default":6,kdt:9}],3:[function(t,e,n){e.exports={"default":t("core-js/library/fn/object/define-property"),__esModule:!0}},{"core-js/library/fn/object/define-property":7}],4:[function(t,e,n){"use strict";n["default"]=function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")},n.__esModule=!0},{}],5:[function(t,e,n){"use strict";var i=t("babel-runtime/core-js/object/define-property")["default"];n["default"]=function(){function t(t,e){for(var n=0;n<e.length;n++){var o=e[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),i(t,o.key,o)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}(),n.__esModule=!0},{"babel-runtime/core-js/object/define-property":3}],6:[function(t,e,n){"use 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r=n[i.dimension];return t[r]<i.obj[r]?e(i.left,i):e(i.right,i)}var o,r,s=e(this.root,null);return null===s?void(this.root=new i(t,0,null)):(o=new i(t,(s.dimension+1)%n.length,s),r=n[s.dimension],void(t[r]<s.obj[r]?s.left=o:s.right=o))},this.remove=function(t){function e(i){if(null===i)return null;if(i.obj===t)return i;var o=n[i.dimension];return t[o]<i.obj[o]?e(i.left,i):e(i.right,i)}function i(t){function e(t,i){var o,r,s,a,u;return null===t?null:(o=n[i],t.dimension===i?null!==t.right?e(t.right,i):t:(r=t.obj[o],s=e(t.left,i),a=e(t.right,i),u=t,null!==s&&s.obj[o]>r&&(u=s),null!==a&&a.obj[o]>u.obj[o]&&(u=a),u))}function o(t,e){var i,r,s,a,u;return null===t?null:(i=n[e],t.dimension===e?null!==t.left?o(t.left,e):t:(r=t.obj[i],s=o(t.left,e),a=o(t.right,e),u=t,null!==s&&s.obj[i]<r&&(u=s),null!==a&&a.obj[i]<u.obj[i]&&(u=a),u))}var r,a,u;return null===t.left&&null===t.right?null===t.parent?void(s.root=null):(u=n[t.parent.dimension],void(t.obj[u]<t.parent.obj[u]?t.parent.left=null:t.parent.right=null)):(r=null!==t.left?e(t.left,t.dimension):o(t.right,t.dimension),a=r.obj,i(r),void(t.obj=a))}var o;o=e(s.root),null!==o&&i(o)},this.nearest=function(t,i,o){function a(o){function r(t,e){c.push([t,e]),c.size()>i&&c.pop()}var s,u,l,h,f=n[o.dimension],d=e(t,o.obj),v={};for(h=0;h<n.length;h+=1)h===o.dimension?v[n[h]]=t[n[h]]:v[n[h]]=o.obj[n[h]];return u=e(v,o.obj),null===o.right&&null===o.left?void((c.size()<i||d<c.peek()[1])&&r(o,d)):(s=null===o.right?o.left:null===o.left?o.right:t[f]<o.obj[f]?o.left:o.right,a(s),(c.size()<i||d<c.peek()[1])&&r(o,d),void((c.size()<i||Math.abs(u)<c.peek()[1])&&(l=s===o.left?o.right:o.left,null!==l&&a(l))))}var u,l,c;if(c=new r(function(t){return-t[1]}),o)for(u=0;i>u;u+=1)c.push([null,o]);for(a(s.root),l=[],u=0;i>u;u+=1)c.content[u][0]&&l.push([c.content[u][0].obj,c.content[u][1]]);return l},this.balanceFactor=function(){function t(e){return null===e?0:Math.max(t(e.left),t(e.right))+1}function e(t){return null===t?0:e(t.left)+e(t.right)+1}return t(s.root)/(Math.log(e(s.root))/Math.log(2))}}function r(t){this.content=[],this.scoreFunction=t}r.prototype={push:function(t){this.content.push(t),this.bubbleUp(this.content.length-1)},pop:function(){var t=this.content[0],e=this.content.pop();return this.content.length>0&&(this.content[0]=e,this.sinkDown(0)),t},peek:function(){return this.content[0]},remove:function(t){for(var e=this.content.length,n=0;e>n;n++)if(this.content[n]==t){var i=this.content.pop();return void(n!=e-1&&(this.content[n]=i,this.scoreFunction(i)<this.scoreFunction(t)?this.bubbleUp(n):this.sinkDown(n)))}throw new Error("Node not found.")},size:function(){return this.content.length},bubbleUp:function(t){for(var e=this.content[t];t>0;){var n=Math.floor((t+1)/2)-1,i=this.content[n];if(!(this.scoreFunction(e)<this.scoreFunction(i)))break;this.content[n]=e,this.content[t]=i,t=n}},sinkDown:function(t){for(var e=this.content.length,n=this.content[t],i=this.scoreFunction(n);;){var o=2*(t+1),r=o-1,s=null;if(e>r){var a=this.content[r],u=this.scoreFunction(a);i>u&&(s=r)}if(e>o){var l=this.content[o],c=this.scoreFunction(l);(null==s?i:u)>c&&(s=o)}if(null==s)break;this.content[t]=this.content[s],this.content[s]=n,t=s}}},e.exports={createKdTree:function(t,e,n){return new o(t,e,n)}}},{}]},{},[1])(1)});