6 lines
37 KiB
JavaScript
6 lines
37 KiB
JavaScript
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/*! wavesurfer.js 1.4.0 (Mon, 10 Apr 2017 08:55:35 GMT)
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* https://github.com/katspaugh/wavesurfer.js
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* @license BSD-3-Clause */
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!function(a,b){"function"==typeof define&&define.amd?define("wavesurfer",[],function(){return a.WaveSurfer=b()}):"object"==typeof exports?module.exports=b():a.WaveSurfer=b()}(this,function(){"use strict";var a={defaultParams:{audioContext:null,audioRate:1,autoCenter:!0,backend:"WebAudio",barHeight:1,closeAudioContext:!1,container:null,cursorColor:"#333",cursorWidth:1,dragSelection:!0,fillParent:!0,forceDecode:!1,height:128,hideScrollbar:!1,interact:!0,loopSelection:!0,mediaContainer:null,mediaControls:!1,mediaType:"audio",minPxPerSec:20,partialRender:!1,pixelRatio:window.devicePixelRatio||screen.deviceXDPI/screen.logicalXDPI,progressColor:"#555",normalize:!1,renderer:"MultiCanvas",scrollParent:!1,skipLength:2,splitChannels:!1,waveColor:"#999"},init:function(b){if(this.params=a.util.extend({},this.defaultParams,b),this.container="string"==typeof b.container?document.querySelector(this.params.container):this.params.container,!this.container)throw new Error("Container element not found");if(null==this.params.mediaContainer?this.mediaContainer=this.container:"string"==typeof this.params.mediaContainer?this.mediaContainer=document.querySelector(this.params.mediaContainer):this.mediaContainer=this.params.mediaContainer,!this.mediaContainer)throw new Error("Media Container element not found");this.savedVolume=0,this.isMuted=!1,this.tmpEvents=[],this.currentAjax=null,this.createDrawer(),this.createBackend(),this.createPeakCache(),this.isDestroyed=!1},createDrawer:function(){var b=this;this.drawer=Object.create(a.Drawer[this.params.renderer]),this.drawer.init(this.container,this.params),this.drawer.on("redraw",function(){b.drawBuffer(),b.drawer.progress(b.backend.getPlayedPercents())}),this.drawer.on("click",function(a,c){setTimeout(function(){b.seekTo(c)},0)}),this.drawer.on("scroll",function(a){b.params.partialRender&&b.drawBuffer(),b.fireEvent("scroll",a)})},createBackend:function(){var b=this;this.backend&&this.backend.destroy(),"AudioElement"==this.params.backend&&(this.params.backend="MediaElement"),"WebAudio"!=this.params.backend||a.WebAudio.supportsWebAudio()||(this.params.backend="MediaElement"),this.backend=Object.create(a[this.params.backend]),this.backend.init(this.params),this.backend.on("finish",function(){b.fireEvent("finish")}),this.backend.on("play",function(){b.fireEvent("play")}),this.backend.on("pause",function(){b.fireEvent("pause")}),this.backend.on("audioprocess",function(a){b.drawer.progress(b.backend.getPlayedPercents()),b.fireEvent("audioprocess",a)})},createPeakCache:function(){this.params.partialRender&&(this.peakCache=Object.create(a.PeakCache),this.peakCache.init())},getDuration:function(){return this.backend.getDuration()},getCurrentTime:function(){return this.backend.getCurrentTime()},play:function(a,b){this.fireEvent("interaction",this.play.bind(this,a,b)),this.backend.play(a,b)},pause:function(){this.backend.isPaused()||this.backend.pause()},playPause:function(){this.backend.isPaused()?this.play():this.pause()},isPlaying:function(){return!this.backend.isPaused()},skipBackward:function(a){this.skip(-a||-this.params.skipLength)},skipForward:function(a){this.skip(a||this.params.skipLength)},skip:function(a){var b=this.getCurrentTime()||0,c=this.getDuration()||1;b=Math.max(0,Math.min(c,b+(a||0))),this.seekAndCenter(b/c)},seekAndCenter:function(a){this.seekTo(a),this.drawer.recenter(a)},seekTo:function(a){this.fireEvent("interaction",this.seekTo.bind(this,a));var b=this.backend.isPaused();b||this.backend.pause();var c=this.params.scrollParent;this.params.scrollParent=!1,this.backend.seekTo(a*this.getDuration()),this.drawer.progress(this.backend.getPlayedPercents()),b||this.backend.play(),this.params.scrollParent=c,this.fireEvent("seek",a)},stop:function(){this.pause(),this.seekTo(0),this.drawer.progress(0)},setVolume:function(a){this.backend.setVolume(a)},getVolume:function(){return this.backend.getVolume()},setPlaybackRate:function(a){this.backend.setPlaybackRate(a)},getPlaybackRate:function(){return this.backend.getPlaybackRate()},toggleMute:function(){this.setMute(!this.isMuted)},setMute:function(
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plotMax:1,plotColor:"#f63",plotProgressColor:"#F00",plotPointHeight:2,plotPointWidth:2,plotSeparator:!0,plotSeparatorColor:"black",plotRangeDisplay:!1,plotRangeUnits:"",plotRangePrecision:4,plotRangeIgnoreOutliers:!1,plotRangeFontSize:12,plotRangeFontType:"Ariel",waveDrawMedianLine:!0,plotFileDelimiter:"\t"},plotTimeStart:0,plotTimeEnd:-1,plotArrayLoaded:!1,plotArray:[],plotPoints:[],plotMin:0,plotMax:1,initDrawer:function(a){var b=this;for(var c in this.defaultPlotParams)void 0===this.params[c]&&(this.params[c]=this.defaultPlotParams[c]);if(this.plotTimeStart=this.params.plotTimeStart,void 0!==this.params.plotTimeEnd&&(this.plotTimeEnd=this.params.plotTimeEnd),Array.isArray(a.plotArray))this.plotArray=a.plotArray,this.plotArrayLoaded=!0;else{var d=function(a){b.plotArray=a,b.plotArrayLoaded=!0,b.fireEvent("plot_array_loaded")};this.loadPlotArrayFromFile(a.plotFileUrl,d,this.params.plotFileDelimiter)}},drawPeaks:function(a,b,c,d){if(1==this.plotArrayLoaded)this.setWidth(b),this.splitChannels=!0,this.params.height=this.params.height/2,a[0]instanceof Array&&(a=a[0]),this.params.barWidth?this.drawBars(a,1,c,d):this.drawWave(a,1,c,d),this.params.height=2*this.params.height,this.calculatePlots(),this.drawPlots();else{var e=this;e.on("plot-array-loaded",function(){e.drawPeaks(a,b,c,d)})}},drawPlots:function(){var a=this.params.height*this.params.pixelRatio/2,b=.5/this.params.pixelRatio;this.waveCc.fillStyle=this.params.plotColor,this.progressCc&&(this.progressCc.fillStyle=this.params.plotProgressColor);for(var c in this.plotPoints){var d=parseInt(c),e=a-this.params.plotPointHeight-this.plotPoints[c]*(a-this.params.plotPointHeight),f=this.params.plotPointHeight;this.waveCc.fillRect(d,e,this.params.plotPointWidth,f),this.progressCc&&this.progressCc.fillRect(d,e,this.params.plotPointWidth,f)}this.params.plotSeparator&&(this.waveCc.fillStyle=this.params.plotSeparatorColor,this.waveCc.fillRect(0,a,this.width,b)),this.params.plotRangeDisplay&&this.displayPlotRange()},displayPlotRange:function(){var a=this.params.plotRangeFontSize*this.params.pixelRatio,b=this.plotMax.toPrecision(this.params.plotRangePrecision)+" "+this.params.plotRangeUnits,c=this.plotMin.toPrecision(this.params.plotRangePrecision)+" "+this.params.plotRangeUnits;this.waveCc.font=a.toString()+"px "+this.params.plotRangeFontType,this.waveCc.fillText(b,3,a),this.waveCc.fillText(c,3,this.height/2)},calculatePlots:function(){this.plotPoints={},this.calculatePlotTimeEnd();for(var a=[],b=-1,c=0,d=99999999999999,e=0,f=99999999999999,g=this.plotTimeEnd-this.plotTimeStart,h=0;h<this.plotArray.length;h++){var i=this.plotArray[h];if(i.value>c&&(c=i.value),i.value<d&&(d=i.value),i.time>=this.plotTimeStart&&i.time<=this.plotTimeEnd){var j=Math.round(this.width*(i.time-this.plotTimeStart)/g);if(a.push(i.value),j!==b&&a.length>0){var k=this.avg(a);k>e&&(e=k),k<f&&(f=k),this.plotPoints[b]=k,a=[]}b=j}}"whole"==this.params.plotNormalizeTo?(this.plotMin=d,this.plotMax=c):"values"==this.params.plotNormalizeTo?(this.plotMin=this.params.plotMin,this.plotMax=this.params.plotMax):(this.plotMin=f,this.plotMax=e),this.normalizeValues()},normalizeValues:function(){var a={};if("none"!==this.params.plotNormalizeTo){for(var b in this.plotPoints){var c=(this.plotPoints[b]-this.plotMin)/(this.plotMax-this.plotMin);c>1?this.params.plotRangeIgnoreOutliers||(a[b]=1):c<0?this.params.plotRangeIgnoreOutliers||(a[b]=0):a[b]=c}this.plotPoints=a}},loadPlotArrayFromFile:function(b,c,d){void 0===d&&(d="\t");var e=[],f={url:b,responseType:"text"},g=a.util.ajax(f);g.on("load",function(a){if(200==a.currentTarget.status){for(var b=a.currentTarget.responseText.split("\n"),f=0;f<b.length;f++){var g=b[f].split(d);2==g.length&&e.push({time:parseFloat(g[0]),value:parseFloat(g[1])})}c(e)}})},calculatePlotTimeEnd:function(){void 0!==this.params.plotTimeEnd?this.plotTimeEnd=this.params.plotTimeEnd:this.plotTimeEnd=this.plotArray[this.plotArray.length-1].time},avg:function(a){var b=a.reduce(function(a,b){return a+b});return b/a.length}}),a.util.extend(a.Drawer.SplitWavePointPlot,a.Observer),a.PeakCache={init:function(){t
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//# sourceMappingURL=wavesurfer.min.js.map
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