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wavefile - npm Package Compare versions

Comparing version 10.1.0 to 10.2.0

lib/parsers/base64-arraybuffer.js
lib/parsers/interleave.js
lib/parsers/truncate-samples.js
lib/parsers/write-string.js
lib/resampler/fir-lpf.js
lib/resampler/index.js
lib/resampler/interpolator.js
lib/validators/validate-num-channels.js
lib/validators/validate-sample-rate.js

11

CHANGELOG.md
# CHANGELOG
## version 10.2.0 - 2020-01-16
Change the sample rate.
### New Features:
Change the sample rate with ```wav.toSampleRate();```
### Fixes:
- Bug that prevented creating multi channel files using a array of typed arrays for samples
- Type declaration for sample arrays now use more generic types to ease integration
## version 10.1.0 - 2020-01-08

@@ -4,0 +15,0 @@ Add *getSamples()* to the API. It returns the samples packed in a Float64Array.

162

dist/wavefile.js

@@ -1,78 +0,84 @@

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a);return c?new K(a):new z(a)};F.prototype.b=function(a){return 16===a?new G(5,11):32===a?new G(8,23):new G(11,52)};y.prototype.ha=function(a){this.c=0;this.container=this.o(a,4);if(-1===this.U.indexOf(this.container))throw Error("Not a supported format.");this.a.m="RIFX"===this.container;this.chunkSize=this.b(a);this.format=this.o(a,4);this.T={chunkId:this.container,chunkSize:this.chunkSize,format:this.format,subChunks:this.P(a)}};y.prototype.l=function(a,b){b=void 0===b?!1:b;for(var c=this.T.subChunks,
d=[],e=0;e<c.length;e++)if(c[e].chunkId==a)if(b)d.push(c[e]);else return c[e];return"LIST"==a?d.length?d:null:null};y.prototype.o=function(a,b){var c=I(a,this.c,this.c+b);this.c+=b;return c};y.prototype.b=function(a){a=N(a,this.a,this.c);this.c+=4;return a};y.prototype.P=function(a){for(var b=[],c=this.c;c<=a.length-8;)b.push(this.Fa(a,c)),c+=8+b[b.length-1].chunkSize,c=c%2?c+1:c;return b};y.prototype.Fa=function(a,b){var c={chunkId:this.pa(a,b),chunkSize:this.qa(a,b)};"LIST"==c.chunkId?(c.format=
I(a,b+8,b+12),this.c+=4,c.subChunks=this.P(a)):(this.c=b+8+(c.chunkSize%2?c.chunkSize+1:c.chunkSize),c.chunkData={start:b+8,end:this.c});return c};y.prototype.pa=function(a,b){this.c+=4;return I(a,b,b+4)};y.prototype.qa=function(a,b){this.c+=4;return N(a,this.a,b+4)};Q(u,y);u.prototype.fromBuffer=function(a,b){b=void 0===b?!0:b;this.O();this.ha(a);this.g.m=this.a.m;if("WAVE"!=this.format)throw Error('Could not find the "WAVE" format identifier');this.Ma(a);this.Oa(a);this.Na(a);this.Ja(a);this.da(a);
this.Ka(a);this.ba(a);this.La(a,b);this.Qa(a);this.Ra(a);this.ca(a)};u.prototype.O=function(){var a=new u;Object.assign(this.fmt,a.fmt);Object.assign(this.fact,a.fact);Object.assign(this.cue,a.cue);Object.assign(this.smpl,a.smpl);Object.assign(this.bext,a.bext);Object.assign(this.iXML,a.iXML);Object.assign(this.ds64,a.ds64);Object.assign(this.data,a.data);this.LIST=[];Object.assign(this.junk,a.junk);Object.assign(this._PMX,a._PMX)};u.prototype.Oa=function(a){var b=this.l("fmt ");if(b)this.c=b.chunkData.start,
this.fmt.chunkId=b.chunkId,this.fmt.chunkSize=b.chunkSize,this.fmt.audioFormat=this.i(a),this.fmt.numChannels=this.i(a),this.fmt.sampleRate=this.b(a),this.fmt.byteRate=this.b(a),this.fmt.blockAlign=this.i(a),this.fmt.bitsPerSample=this.i(a),this.Pa(a);else throw Error('Could not find the "fmt " chunk');};u.prototype.Pa=function(a){16<this.fmt.chunkSize&&(this.fmt.cbSize=this.i(a),18<this.fmt.chunkSize&&(this.fmt.validBitsPerSample=this.i(a),20<this.fmt.chunkSize&&(this.fmt.dwChannelMask=this.b(a),
this.fmt.subformat=[this.b(a),this.b(a),this.b(a),this.b(a)])))};u.prototype.Na=function(a){var b=this.l("fact");b&&(this.c=b.chunkData.start,this.fact.chunkId=b.chunkId,this.fact.chunkSize=b.chunkSize,this.fact.dwSampleLength=this.b(a))};u.prototype.Ka=function(a){var b=this.l("cue ");if(b)for(this.c=b.chunkData.start,this.cue.chunkId=b.chunkId,this.cue.chunkSize=b.chunkSize,this.cue.dwCuePoints=this.b(a),b=0;b<this.cue.dwCuePoints;b++)this.cue.points.push({dwName:this.b(a),dwPosition:this.b(a),
fccChunk:this.o(a,4),dwChunkStart:this.b(a),dwBlockStart:this.b(a),dwSampleOffset:this.b(a)})};u.prototype.ba=function(a){var b=this.l("smpl");if(b)for(this.c=b.chunkData.start,this.smpl.chunkId=b.chunkId,this.smpl.chunkSize=b.chunkSize,this.smpl.dwManufacturer=this.b(a),this.smpl.dwProduct=this.b(a),this.smpl.dwSamplePeriod=this.b(a),this.smpl.dwMIDIUnityNote=this.b(a),this.smpl.dwMIDIPitchFraction=this.b(a),this.smpl.dwSMPTEFormat=this.b(a),this.smpl.dwSMPTEOffset=this.b(a),this.smpl.dwNumSampleLoops=
this.b(a),this.smpl.dwSamplerData=this.b(a),b=0;b<this.smpl.dwNumSampleLoops;b++)this.smpl.loops.push({dwName:this.b(a),dwType:this.b(a),dwStart:this.b(a),dwEnd:this.b(a),dwFraction:this.b(a),dwPlayCount:this.b(a)})};u.prototype.La=function(a,b){var c=this.l("data");if(c)this.data.chunkId="data",this.data.chunkSize=c.chunkSize,b&&(this.data.samples=a.slice(c.chunkData.start,c.chunkData.end));else throw Error('Could not find the "data" chunk');};u.prototype.Ja=function(a){var b=this.l("bext");b&&(this.c=
b.chunkData.start,this.bext.chunkId=b.chunkId,this.bext.chunkSize=b.chunkSize,this.bext.description=this.o(a,256),this.bext.originator=this.o(a,32),this.bext.originatorReference=this.o(a,32),this.bext.originationDate=this.o(a,10),this.bext.originationTime=this.o(a,8),this.bext.timeReference=[this.b(a),this.b(a)],this.bext.version=this.i(a),this.bext.UMID=this.o(a,64),this.bext.loudnessValue=this.i(a),this.bext.loudnessRange=this.i(a),this.bext.maxTruePeakLevel=this.i(a),this.bext.maxMomentaryLoudness=
this.i(a),this.bext.maxShortTermLoudness=this.i(a),this.bext.reserved=this.o(a,180),this.bext.codingHistory=this.o(a,this.bext.chunkSize-602))};u.prototype.da=function(a){var b=this.l("iXML");b&&(this.c=b.chunkData.start,this.iXML.chunkId=b.chunkId,this.iXML.chunkSize=b.chunkSize,this.iXML.value=I(a,this.c,this.c+this.iXML.chunkSize))};u.prototype.Ma=function(a){var b=this.l("ds64");if(b)this.c=b.chunkData.start,this.ds64.chunkId=b.chunkId,this.ds64.chunkSize=b.chunkSize,this.ds64.riffSizeHigh=this.b(a),
this.ds64.riffSizeLow=this.b(a),this.ds64.dataSizeHigh=this.b(a),this.ds64.dataSizeLow=this.b(a),this.ds64.originationTime=this.b(a),this.ds64.sampleCountHigh=this.b(a),this.ds64.sampleCountLow=this.b(a);else if("RF64"==this.container)throw Error('Could not find the "ds64" chunk');};u.prototype.Ra=function(a){var b=this.l("LIST",!0);if(null!==b)for(var c=0;c<b.length;c++){var d=b[c];this.LIST.push({chunkId:d.chunkId,chunkSize:d.chunkSize,format:d.format,subChunks:[]});for(var e=0;e<d.subChunks.length;e++)this.Sa(d.subChunks[e],
d.format,a)}};u.prototype.Sa=function(a,b,c){"adtl"==b?-1<["labl","note","ltxt"].indexOf(a.chunkId)&&(this.c=a.chunkData.start,b={chunkId:a.chunkId,chunkSize:a.chunkSize,dwName:this.b(c)},"ltxt"==a.chunkId?(b.dwSampleLength=this.b(c),b.dwPurposeID=this.b(c),b.dwCountry=this.i(c),b.dwLanguage=this.i(c),b.dwDialect=this.i(c),b.dwCodePage=this.i(c),b.value=""):b.value=this.S(c,this.c),this.LIST[this.LIST.length-1].subChunks.push(b)):"INFO"==b&&(this.c=a.chunkData.start,this.LIST[this.LIST.length-1].subChunks.push({chunkId:a.chunkId,
chunkSize:a.chunkSize,value:this.S(c,this.c)}))};u.prototype.Qa=function(a){var b=this.l("junk");b&&(this.junk={chunkId:b.chunkId,chunkSize:b.chunkSize,chunkData:[].slice.call(a.slice(b.chunkData.start,b.chunkData.end))})};u.prototype.ca=function(a){var b=this.l("_PMX");b&&(this.c=b.chunkData.start,this._PMX.chunkId=b.chunkId,this._PMX.chunkSize=b.chunkSize,this._PMX.value=I(a,this.c,this.c+this._PMX.chunkSize))};u.prototype.S=function(a,b){for(var c=b=void 0===b?0:b;c<a.length&&(this.c++,0!==a[c]);c++);
return I(a,b,this.c-1)};u.prototype.i=function(a){a=N(a,this.g,this.c);this.c+=2;return a};Q(q,u);q.prototype.toBuffer=function(){this.g.m="RIFX"===this.container;this.a.m=this.g.m;for(var a=[this.ya(),this.ua(),this.oa(),this.Ha(),this.wa(),this.va(),w(this.data.chunkId),g(this.data.samples.length,this.a),this.data.samples,this.ra(),this.Da(),this.za(),this.Ga()],b=0,c=0;c<a.length;c++)b+=a[c].length;c=new Uint8Array(b+12);var d=V(this.container,c,0);d=M([b+4],this.a,c,void 0===d?0:d);d=V(this.format,
c,void 0===d?0:d);for(b=0;b<a.length;b++)c.set(a[b],d),d+=a[b].length;return c};q.prototype.oa=function(){var a=[];this.na();this.bext.chunkId&&(this.bext.chunkSize=602+this.bext.codingHistory.length,a=a.concat(w(this.bext.chunkId),g(602+this.bext.codingHistory.length,this.a),x(this.bext.description,256),x(this.bext.originator,32),x(this.bext.originatorReference,32),x(this.bext.originationDate,10),x(this.bext.originationTime,8),g(this.bext.timeReference[0],this.a),g(this.bext.timeReference[1],this.a),
g(this.bext.version,this.g),x(this.bext.UMID,64),g(this.bext.loudnessValue,this.g),g(this.bext.loudnessRange,this.g),g(this.bext.maxTruePeakLevel,this.g),g(this.bext.maxMomentaryLoudness,this.g),g(this.bext.maxShortTermLoudness,this.g),x(this.bext.reserved,180),x(this.bext.codingHistory,this.bext.codingHistory.length)));this.j(a);return a};q.prototype.na=function(){for(var a in this.bext)if(this.bext.hasOwnProperty(a)&&this.bext[a]&&"timeReference"!=a){this.bext.chunkId="bext";break}if(this.bext.timeReference[0]||
this.bext.timeReference[1])this.bext.chunkId="bext"};q.prototype.Ha=function(){var a=[];if(this.iXML.chunkId){var b=w(this.iXML.value);this.iXML.chunkSize=b.length;a=a.concat(w(this.iXML.chunkId),g(this.iXML.chunkSize,this.a),b)}this.j(a);return a};q.prototype.ua=function(){var a=[];this.ds64.chunkId&&(a=a.concat(w(this.ds64.chunkId),g(this.ds64.chunkSize,this.a),g(this.ds64.riffSizeHigh,this.a),g(this.ds64.riffSizeLow,this.a),g(this.ds64.dataSizeHigh,this.a),g(this.ds64.dataSizeLow,this.a),g(this.ds64.originationTime,
this.a),g(this.ds64.sampleCountHigh,this.a),g(this.ds64.sampleCountLow,this.a)));this.j(a);return a};q.prototype.ra=function(){var a=[];if(this.cue.chunkId){var b=this.aa();a=a.concat(w(this.cue.chunkId),g(b.length+4,this.a),g(this.cue.dwCuePoints,this.a),b)}this.j(a);return a};q.prototype.aa=function(){for(var a=[],b=0;b<this.cue.dwCuePoints;b++)a=a.concat(g(this.cue.points[b].dwName,this.a),g(this.cue.points[b].dwPosition,this.a),w(this.cue.points[b].fccChunk),g(this.cue.points[b].dwChunkStart,
this.a),g(this.cue.points[b].dwBlockStart,this.a),g(this.cue.points[b].dwSampleOffset,this.a));return a};q.prototype.Da=function(){var a=[];if(this.smpl.chunkId){var b=this.Ea();a=a.concat(w(this.smpl.chunkId),g(b.length+36,this.a),g(this.smpl.dwManufacturer,this.a),g(this.smpl.dwProduct,this.a),g(this.smpl.dwSamplePeriod,this.a),g(this.smpl.dwMIDIUnityNote,this.a),g(this.smpl.dwMIDIPitchFraction,this.a),g(this.smpl.dwSMPTEFormat,this.a),g(this.smpl.dwSMPTEOffset,this.a),g(this.smpl.dwNumSampleLoops,
this.a),g(this.smpl.dwSamplerData,this.a),b)}this.j(a);return a};q.prototype.Ea=function(){for(var a=[],b=0;b<this.smpl.dwNumSampleLoops;b++)a=a.concat(g(this.smpl.loops[b].dwName,this.a),g(this.smpl.loops[b].dwType,this.a),g(this.smpl.loops[b].dwStart,this.a),g(this.smpl.loops[b].dwEnd,this.a),g(this.smpl.loops[b].dwFraction,this.a),g(this.smpl.loops[b].dwPlayCount,this.a));return a};q.prototype.va=function(){var a=[];this.fact.chunkId&&(a=a.concat(w(this.fact.chunkId),g(this.fact.chunkSize,this.a),
g(this.fact.dwSampleLength,this.a)));this.j(a);return a};q.prototype.wa=function(){var a=[];if(this.fmt.chunkId)return a=a.concat(w(this.fmt.chunkId),g(this.fmt.chunkSize,this.a),g(this.fmt.audioFormat,this.g),g(this.fmt.numChannels,this.g),g(this.fmt.sampleRate,this.a),g(this.fmt.byteRate,this.a),g(this.fmt.blockAlign,this.g),g(this.fmt.bitsPerSample,this.g),this.xa()),this.j(a),a;throw Error('Could not find the "fmt " chunk');};q.prototype.xa=function(){var a=[];16<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.cbSize,
this.g)));18<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.validBitsPerSample,this.g)));20<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.dwChannelMask,this.a)));24<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.subformat[0],this.a),g(this.fmt.subformat[1],this.a),g(this.fmt.subformat[2],this.a),g(this.fmt.subformat[3],this.a)));return a};q.prototype.za=function(){for(var a=[],b=0;b<this.LIST.length;b++){var c=this.Ba(this.LIST[b].subChunks,this.LIST[b].format);a=a.concat(w(this.LIST[b].chunkId),g(c.length+
4,this.a),w(this.LIST[b].format),c)}this.j(a);return a};q.prototype.Ba=function(a,b){for(var c=[],d=0;d<a.length;d++){if("INFO"==b){var e=x(a[d].value,a[d].value.length);c=c.concat(w(a[d].chunkId),g(e.length+1,this.a),e);c.push(0)}else"adtl"==b&&(-1<["labl","note"].indexOf(a[d].chunkId)?(e=x(a[d].value,a[d].value.length),c=c.concat(w(a[d].chunkId),g(e.length+5,this.a),g(a[d].dwName,this.a),e),c.push(0)):"ltxt"==a[d].chunkId&&(c=c.concat(this.Ca(a[d]))));this.j(c)}return c};q.prototype.Ga=function(){var a=
[];if(this._PMX.chunkId){var b=w(this._PMX.value);this._PMX.chunkSize=b.length;a=a.concat(w(this._PMX.chunkId),g(this._PMX.chunkSize,this.a),b)}this.j(a);return a};q.prototype.Ca=function(a){return w(a.chunkId).concat(g(a.value.length+20,this.a),g(a.dwName,this.a),g(a.dwSampleLength,this.a),g(a.dwPurposeID,this.a),g(a.dwCountry,this.g),g(a.dwLanguage,this.g),g(a.dwDialect,this.g),g(a.dwCodePage,this.g),x(a.value,a.value.length))};q.prototype.ya=function(){var a=[];if(this.junk.chunkId)return a.concat(w(this.junk.chunkId),
g(this.junk.chunkData.length,this.a),this.junk.chunkData);this.j(a);return a};q.prototype.j=function(a){a.length%2&&a.push(0)};Q(t,q);t.prototype.fromScratch=function(a,b,c,d,e){e=void 0===e?{}:e;this.O();this.R(a,b,c,d,e)};t.prototype.fromBuffer=function(a,b){q.prototype.fromBuffer.call(this,a,void 0===b?!0:b);this.ja();this.V()};t.prototype.toBuffer=function(){this.W();return q.prototype.toBuffer.call(this)};t.prototype.getSamples=function(a){a=void 0===a?!1:a;var b=new Float64Array(this.data.samples.length/
(this.f.h/8));J(this.data.samples,this.f,b);if(!a&&1<this.fmt.numChannels){a=this.fmt.numChannels;for(var c=[],d=0;d<a;d++)c[d]=new Float64Array(b.length/a);for(d=0;d<a;d++)for(var e=0,f=d;f<b.length;f+=a)c[d][e++]=b[f];b=c}return b};t.prototype.getSample=function(a){a*=this.f.h/8;if(a+this.f.h/8>this.data.samples.length)throw Error("Range error");return N(this.data.samples.slice(a,a+this.f.h/8),this.f)};t.prototype.setSample=function(a,b){a*=this.f.h/8;if(a+this.f.h/8>this.data.samples.length)throw Error("Range error");
M([b],this.f,this.data.samples,void 0===a?0:a)};t.prototype.getiXML=function(){return this.iXML.value};t.prototype.setiXML=function(a){if("string"!==typeof a)throw new TypeError("iXML value must be a string.");this.iXML.value=a;this.iXML.chunkId="iXML"};t.prototype.get_PMX=function(){return this._PMX.value};t.prototype.set_PMX=function(a){if("string"!==typeof a)throw new TypeError("_PMX value must be a string.");this._PMX.value=a;this._PMX.chunkId="_PMX"};t.prototype.R=function(a,b,c,d,e){e=void 0===
e?{}:e;e.container||(e.container="RIFF");this.container=e.container;this.bitDepth=c;if(0<d.length&&d[0].constructor===Array){for(var f=[],h=0,l=d[0].length;h<l;h++)for(var p=0,v=d.length;p<v;p++)f.push(d[p][h]);d=f}this.V();f=this.f.h/8;this.data.samples=new Uint8Array(d.length*f);M(d,this.f,this.data.samples);this.Ia(c,a,b,f,this.data.samples.length,e);this.data.chunkId="data";this.data.chunkSize=this.data.samples.length;this.W()};t.prototype.Ia=function(a,b,c,d,e,f){"4"==a?this.ka(a,b,c,d,e,f):
"8a"==a||"8m"==a?this.la(a,b,c,d,e,f):-1==Object.keys(this.M).indexOf(a)||2<b?this.ma(a,b,c,d,e,f):this.F(a,b,c,d,e,f)};t.prototype.F=function(a,b,c,d,e,f){this.container=f.container;this.chunkSize=36+e;this.format="WAVE";this.bitDepth=a;this.fmt={chunkId:"fmt ",chunkSize:16,audioFormat:this.M[a]||65534,numChannels:b,sampleRate:c,byteRate:b*d*c,blockAlign:b*d,bitsPerSample:parseInt(a,10),cbSize:0,validBitsPerSample:0,dwChannelMask:0,subformat:[]}};t.prototype.ka=function(a,b,c,d,e,f){this.F(a,b,c,
d,e,f);this.chunkSize=40+e;this.fmt.chunkSize=20;this.fmt.byteRate=4055;this.fmt.blockAlign=256;this.fmt.bitsPerSample=4;this.fmt.cbSize=2;this.fmt.validBitsPerSample=505;this.fact={chunkId:"fact",chunkSize:4,dwSampleLength:2*e}};t.prototype.ma=function(a,b,c,d,e,f){this.F(a,b,c,d,e,f);this.chunkSize=60+e;this.fmt.chunkSize=40;this.fmt.bitsPerSample=(parseInt(a,10)-1|7)+1;this.fmt.cbSize=22;this.fmt.validBitsPerSample=parseInt(a,10);a=this.fmt;c=0;1===b?c=4:2===b?c=3:4===b?c=51:6===b?c=63:8===b&&
(c=1599);a.dwChannelMask=c;this.fmt.subformat=[1,1048576,2852126848,1905997824]};t.prototype.la=function(a,b,c,d,e,f){this.F(a,b,c,d,e,f);this.chunkSize=40+e;this.fmt.chunkSize=20;this.fmt.cbSize=2;this.fmt.validBitsPerSample=8;this.fact={chunkId:"fact",chunkSize:4,dwSampleLength:e}};t.prototype.ja=function(){3===this.fmt.audioFormat&&32===this.fmt.bitsPerSample?this.bitDepth="32f":6===this.fmt.audioFormat?this.bitDepth="8a":7===this.fmt.audioFormat?this.bitDepth="8m":this.bitDepth=this.fmt.bitsPerSample.toString()};
t.prototype.ia=function(){if(!(this.M[this.bitDepth]||8<parseInt(this.bitDepth,10)&&54>parseInt(this.bitDepth,10)))throw Error("Invalid bit depth.");};t.prototype.V=function(){this.f={h:(parseInt(this.bitDepth,10)-1|7)+1,C:"32f"==this.bitDepth||"64"==this.bitDepth,A:"8"!=this.bitDepth,m:"RIFX"==this.container};-1<["4","8a","8m"].indexOf(this.bitDepth)&&(this.f.h=8,this.f.A=!1)};t.prototype.W=function(){this.ia();var a=this.fmt.numChannels;if(1>a||65535<a*this.fmt.bitsPerSample/8)throw Error("Invalid number of channels.");
a=this.fmt.sampleRate;if(1>a||4294967295<this.fmt.bitsPerSample/8*this.fmt.numChannels*a)throw Error("Invalid sample rate.");};Q(k,t);k.prototype.getTag=function(a){a=this.K(a);return null!==a.u?this.LIST[a.LIST].subChunks[a.u].value:null};k.prototype.setTag=function(a,b){var c=a;if(c.constructor!==String)throw Error("Invalid tag name.");if(4>c.length)for(var d=0,e=4-c.length;d<e;d++)c+=" ";a=c;c=this.K(a);null!==c.u?(this.LIST[c.LIST].subChunks[c.u].chunkSize=b.length+1,this.LIST[c.LIST].subChunks[c.u].value=
b):null!==c.LIST?this.LIST[c.LIST].subChunks.push({chunkId:a,chunkSize:b.length+1,value:b}):(this.LIST.push({chunkId:"LIST",chunkSize:b.length+9,format:"INFO",subChunks:[]}),this.LIST[this.LIST.length-1].subChunks.push({chunkId:a,chunkSize:b.length+1,value:b}))};k.prototype.deleteTag=function(a){a=this.K(a);return null!==a.u?(this.LIST[a.LIST].subChunks.splice(a.u,1),!0):!1};k.prototype.listTags=function(){var a=this.Aa(),b={};if(null!==a)for(var c=0,d=this.LIST[a].subChunks.length;c<d;c++)b[this.LIST[a].subChunks[c].chunkId]=
this.LIST[a].subChunks[c].value;return b};k.prototype.listCuePoints=function(){for(var a=this.J(),b=0,c=a.length;b<c;b++)a[b].position=a[b].dwSampleOffset/this.fmt.sampleRate*1E3,a[b].dwSampleLength?(a[b].end=a[b].dwSampleLength/this.fmt.sampleRate*1E3,a[b].end+=a[b].position):a[b].end=null,delete a[b].value;return a};k.prototype.setCuePoint=function(a){this.cue.chunkId="cue ";a.label||(a.label="");var b=this.J();this.H();var c=this.cue.points.length;this.cue.points=[];a.dwSampleOffset=a.position*
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"RIFX"===this.container;this.a.o=this.g.o;for(var a=[this.Ea(),this.Aa(),this.ta(),this.Na(),this.Ca(),this.Ba(),x(this.data.chunkId),g(this.data.samples.length,this.a),this.data.samples,this.wa(),this.Ja(),this.Fa(),this.Ma()],b=0,c=0;c<a.length;c++)b+=a[c].length;c=new Uint8Array(b+12);var d=X(this.container,c,0);d=O([b+4],this.a,c,void 0===d?0:d);d=X(this.format,c,void 0===d?0:d);for(b=0;b<a.length;b++)c.set(a[b],d),d+=a[b].length;return c};u.prototype.ta=function(){var a=[];this.sa();this.bext.chunkId&&
(this.bext.chunkSize=602+this.bext.codingHistory.length,a=a.concat(x(this.bext.chunkId),g(602+this.bext.codingHistory.length,this.a),z(this.bext.description,256),z(this.bext.originator,32),z(this.bext.originatorReference,32),z(this.bext.originationDate,10),z(this.bext.originationTime,8),g(this.bext.timeReference[0],this.a),g(this.bext.timeReference[1],this.a),g(this.bext.version,this.g),z(this.bext.UMID,64),g(this.bext.loudnessValue,this.g),g(this.bext.loudnessRange,this.g),g(this.bext.maxTruePeakLevel,
this.g),g(this.bext.maxMomentaryLoudness,this.g),g(this.bext.maxShortTermLoudness,this.g),z(this.bext.reserved,180),z(this.bext.codingHistory,this.bext.codingHistory.length)));this.j(a);return a};u.prototype.sa=function(){for(var a in this.bext)if(this.bext.hasOwnProperty(a)&&this.bext[a]&&"timeReference"!=a){this.bext.chunkId="bext";break}if(this.bext.timeReference[0]||this.bext.timeReference[1])this.bext.chunkId="bext"};u.prototype.Na=function(){var a=[];if(this.iXML.chunkId){var b=x(this.iXML.value);
this.iXML.chunkSize=b.length;a=a.concat(x(this.iXML.chunkId),g(this.iXML.chunkSize,this.a),b)}this.j(a);return a};u.prototype.Aa=function(){var a=[];this.ds64.chunkId&&(a=a.concat(x(this.ds64.chunkId),g(this.ds64.chunkSize,this.a),g(this.ds64.riffSizeHigh,this.a),g(this.ds64.riffSizeLow,this.a),g(this.ds64.dataSizeHigh,this.a),g(this.ds64.dataSizeLow,this.a),g(this.ds64.originationTime,this.a),g(this.ds64.sampleCountHigh,this.a),g(this.ds64.sampleCountLow,this.a)));this.j(a);return a};u.prototype.wa=
function(){var a=[];if(this.cue.chunkId){var b=this.ya();a=a.concat(x(this.cue.chunkId),g(b.length+4,this.a),g(this.cue.dwCuePoints,this.a),b)}this.j(a);return a};u.prototype.ya=function(){for(var a=[],b=0;b<this.cue.dwCuePoints;b++)a=a.concat(g(this.cue.points[b].dwName,this.a),g(this.cue.points[b].dwPosition,this.a),x(this.cue.points[b].fccChunk),g(this.cue.points[b].dwChunkStart,this.a),g(this.cue.points[b].dwBlockStart,this.a),g(this.cue.points[b].dwSampleOffset,this.a));return a};u.prototype.Ja=
function(){var a=[];if(this.smpl.chunkId){var b=this.Ka();a=a.concat(x(this.smpl.chunkId),g(b.length+36,this.a),g(this.smpl.dwManufacturer,this.a),g(this.smpl.dwProduct,this.a),g(this.smpl.dwSamplePeriod,this.a),g(this.smpl.dwMIDIUnityNote,this.a),g(this.smpl.dwMIDIPitchFraction,this.a),g(this.smpl.dwSMPTEFormat,this.a),g(this.smpl.dwSMPTEOffset,this.a),g(this.smpl.dwNumSampleLoops,this.a),g(this.smpl.dwSamplerData,this.a),b)}this.j(a);return a};u.prototype.Ka=function(){for(var a=[],b=0;b<this.smpl.dwNumSampleLoops;b++)a=
a.concat(g(this.smpl.loops[b].dwName,this.a),g(this.smpl.loops[b].dwType,this.a),g(this.smpl.loops[b].dwStart,this.a),g(this.smpl.loops[b].dwEnd,this.a),g(this.smpl.loops[b].dwFraction,this.a),g(this.smpl.loops[b].dwPlayCount,this.a));return a};u.prototype.Ba=function(){var a=[];this.fact.chunkId&&(a=a.concat(x(this.fact.chunkId),g(this.fact.chunkSize,this.a),g(this.fact.dwSampleLength,this.a)));this.j(a);return a};u.prototype.Ca=function(){var a=[];if(this.fmt.chunkId)return a=a.concat(x(this.fmt.chunkId),
g(this.fmt.chunkSize,this.a),g(this.fmt.audioFormat,this.g),g(this.fmt.numChannels,this.g),g(this.fmt.sampleRate,this.a),g(this.fmt.byteRate,this.a),g(this.fmt.blockAlign,this.g),g(this.fmt.bitsPerSample,this.g),this.Da()),this.j(a),a;throw Error('Could not find the "fmt " chunk');};u.prototype.Da=function(){var a=[];16<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.cbSize,this.g)));18<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.validBitsPerSample,this.g)));20<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.dwChannelMask,
this.a)));24<this.fmt.chunkSize&&(a=a.concat(g(this.fmt.subformat[0],this.a),g(this.fmt.subformat[1],this.a),g(this.fmt.subformat[2],this.a),g(this.fmt.subformat[3],this.a)));return a};u.prototype.Fa=function(){for(var a=[],b=0;b<this.LIST.length;b++){var c=this.Ha(this.LIST[b].subChunks,this.LIST[b].format);a=a.concat(x(this.LIST[b].chunkId),g(c.length+4,this.a),x(this.LIST[b].format),c)}this.j(a);return a};u.prototype.Ha=function(a,b){for(var c=[],d=0;d<a.length;d++){if("INFO"==b){var e=z(a[d].value,
a[d].value.length);c=c.concat(x(a[d].chunkId),g(e.length+1,this.a),e);c.push(0)}else"adtl"==b&&(-1<["labl","note"].indexOf(a[d].chunkId)?(e=z(a[d].value,a[d].value.length),c=c.concat(x(a[d].chunkId),g(e.length+5,this.a),g(a[d].dwName,this.a),e),c.push(0)):"ltxt"==a[d].chunkId&&(c=c.concat(this.Ia(a[d]))));this.j(c)}return c};u.prototype.Ma=function(){var a=[];if(this._PMX.chunkId){var b=x(this._PMX.value);this._PMX.chunkSize=b.length;a=a.concat(x(this._PMX.chunkId),g(this._PMX.chunkSize,this.a),b)}this.j(a);
return a};u.prototype.Ia=function(a){return x(a.chunkId).concat(g(a.value.length+20,this.a),g(a.dwName,this.a),g(a.dwSampleLength,this.a),g(a.dwPurposeID,this.a),g(a.dwCountry,this.g),g(a.dwLanguage,this.g),g(a.dwDialect,this.g),g(a.dwCodePage,this.g),z(a.value,a.value.length))};u.prototype.Ea=function(){var a=[];if(this.junk.chunkId)return a.concat(x(this.junk.chunkId),g(this.junk.chunkData.length,this.a),this.junk.chunkData);this.j(a);return a};u.prototype.j=function(a){a.length%2&&a.push(0)};Q(t,
u);t.prototype.fromScratch=function(a,b,c,d,e){e=void 0===e?{}:e;this.R();this.T(a,b,c,d,e)};t.prototype.fromBuffer=function(a,b){u.prototype.fromBuffer.call(this,a,void 0===b?!0:b);this.oa();this.X()};t.prototype.toBuffer=function(){this.Y();return u.prototype.toBuffer.call(this)};t.prototype.getSamples=function(a){a=void 0===a?!1:a;var b=new Float64Array(this.data.samples.length/(this.f.h/8));M(this.data.samples,this.f,b);if(!a&&1<this.fmt.numChannels){a=this.fmt.numChannels;for(var c=[],d=0;d<
a;d++)c[d]=new Float64Array(b.length/a);for(d=0;d<a;d++)for(var e=0,f=d;f<b.length;f+=a)c[d][e++]=b[f];b=c}return b};t.prototype.getSample=function(a){a*=this.f.h/8;if(a+this.f.h/8>this.data.samples.length)throw Error("Range error");return P(this.data.samples.slice(a,a+this.f.h/8),this.f)};t.prototype.setSample=function(a,b){a*=this.f.h/8;if(a+this.f.h/8>this.data.samples.length)throw Error("Range error");O([b],this.f,this.data.samples,void 0===a?0:a)};t.prototype.getiXML=function(){return this.iXML.value};
t.prototype.setiXML=function(a){if("string"!==typeof a)throw new TypeError("iXML value must be a string.");this.iXML.value=a;this.iXML.chunkId="iXML"};t.prototype.get_PMX=function(){return this._PMX.value};t.prototype.set_PMX=function(a){if("string"!==typeof a)throw new TypeError("_PMX value must be a string.");this._PMX.value=a;this._PMX.chunkId="_PMX"};t.prototype.T=function(a,b,c,d,e){e=void 0===e?{}:e;e.container||(e.container="RIFF");this.container=e.container;this.bitDepth=c;var f=[];if(0<d.length)if(d[0].constructor!==
Number){f=new Float64Array(d[0].length*d.length);for(var h=0,k=0,q=d[0].length;k<q;k++)for(var y=0,La=d.length;y<La;y++)f[h]=d[y][k],h++}else f=d;d=f;this.X();f=this.f.h/8;this.data.samples=new Uint8Array(d.length*f);O(d,this.f,this.data.samples);this.Oa(c,a,b,f,this.data.samples.length,e);this.data.chunkId="data";this.data.chunkSize=this.data.samples.length;this.Y()};t.prototype.Oa=function(a,b,c,d,e,f){"4"==a?this.pa(a,b,c,d,e,f):"8a"==a||"8m"==a?this.qa(a,b,c,d,e,f):-1==Object.keys(this.F).indexOf(a)||
2<b?this.ra(a,b,c,d,e,f):this.A(a,b,c,d,e,f)};t.prototype.A=function(a,b,c,d,e,f){this.container=f.container;this.chunkSize=36+e;this.format="WAVE";this.bitDepth=a;this.fmt={chunkId:"fmt ",chunkSize:16,audioFormat:this.F[a]||65534,numChannels:b,sampleRate:c,byteRate:b*d*c,blockAlign:b*d,bitsPerSample:parseInt(a,10),cbSize:0,validBitsPerSample:0,dwChannelMask:0,subformat:[]}};t.prototype.pa=function(a,b,c,d,e,f){this.A(a,b,c,d,e,f);this.chunkSize=40+e;this.fmt.chunkSize=20;this.fmt.byteRate=4055;this.fmt.blockAlign=
256;this.fmt.bitsPerSample=4;this.fmt.cbSize=2;this.fmt.validBitsPerSample=505;this.fact={chunkId:"fact",chunkSize:4,dwSampleLength:2*e}};t.prototype.ra=function(a,b,c,d,e,f){this.A(a,b,c,d,e,f);this.chunkSize=60+e;this.fmt.chunkSize=40;this.fmt.bitsPerSample=(parseInt(a,10)-1|7)+1;this.fmt.cbSize=22;this.fmt.validBitsPerSample=parseInt(a,10);a=this.fmt;c=0;1===b?c=4:2===b?c=3:4===b?c=51:6===b?c=63:8===b&&(c=1599);a.dwChannelMask=c;this.fmt.subformat=[1,1048576,2852126848,1905997824]};t.prototype.qa=
function(a,b,c,d,e,f){this.A(a,b,c,d,e,f);this.chunkSize=40+e;this.fmt.chunkSize=20;this.fmt.cbSize=2;this.fmt.validBitsPerSample=8;this.fact={chunkId:"fact",chunkSize:4,dwSampleLength:e}};t.prototype.oa=function(){3===this.fmt.audioFormat&&32===this.fmt.bitsPerSample?this.bitDepth="32f":6===this.fmt.audioFormat?this.bitDepth="8a":7===this.fmt.audioFormat?this.bitDepth="8m":this.bitDepth=this.fmt.bitsPerSample.toString()};t.prototype.ma=function(){if(!(this.F[this.bitDepth]||8<parseInt(this.bitDepth,
10)&&54>parseInt(this.bitDepth,10)))throw Error("Invalid bit depth.");};t.prototype.X=function(){this.f={h:(parseInt(this.bitDepth,10)-1|7)+1,M:"32f"==this.bitDepth||"64"==this.bitDepth,D:"8"!=this.bitDepth,o:"RIFX"==this.container};-1<["4","8a","8m"].indexOf(this.bitDepth)&&(this.f.h=8,this.f.D=!1)};t.prototype.Y=function(){this.ma();var a=this.fmt.numChannels;if(1>a||65535<a*this.fmt.bitsPerSample/8)throw Error("Invalid number of channels.");a=this.fmt.sampleRate;if(1>a||4294967295<this.fmt.bitsPerSample/
8*this.fmt.numChannels*a)throw Error("Invalid sample rate.");};Q(n,t);n.prototype.getTag=function(a){a=this.J(a);return null!==a.w?this.LIST[a.LIST].subChunks[a.w].value:null};n.prototype.setTag=function(a,b){var c=a;if(c.constructor!==String)throw Error("Invalid tag name.");if(4>c.length)for(var d=0,e=4-c.length;d<e;d++)c+=" ";a=c;c=this.J(a);null!==c.w?(this.LIST[c.LIST].subChunks[c.w].chunkSize=b.length+1,this.LIST[c.LIST].subChunks[c.w].value=b):null!==c.LIST?this.LIST[c.LIST].subChunks.push({chunkId:a,
chunkSize:b.length+1,value:b}):(this.LIST.push({chunkId:"LIST",chunkSize:b.length+9,format:"INFO",subChunks:[]}),this.LIST[this.LIST.length-1].subChunks.push({chunkId:a,chunkSize:b.length+1,value:b}))};n.prototype.deleteTag=function(a){a=this.J(a);return null!==a.w?(this.LIST[a.LIST].subChunks.splice(a.w,1),!0):!1};n.prototype.listTags=function(){var a=this.Ga(),b={};if(null!==a)for(var c=0,d=this.LIST[a].subChunks.length;c<d;c++)b[this.LIST[a].subChunks[c].chunkId]=this.LIST[a].subChunks[c].value;
return b};n.prototype.listCuePoints=function(){for(var a=this.I(),b=0,c=a.length;b<c;b++)a[b].position=a[b].dwSampleOffset/this.fmt.sampleRate*1E3,a[b].dwSampleLength?(a[b].end=a[b].dwSampleLength/this.fmt.sampleRate*1E3,a[b].end+=a[b].position):a[b].end=null,delete a[b].value;return a};n.prototype.setCuePoint=function(a){this.cue.chunkId="cue ";a.label||(a.label="");var b=this.I();this.G();this.cue.points=[];a.dwSampleOffset=a.position*this.fmt.sampleRate/1E3;a.dwSampleLength=0;a.end&&(a.dwSampleLength=
a.end*this.fmt.sampleRate/1E3-a.dwSampleOffset);0===b.length?this.v(a,1):this.ha(b,a);this.cue.dwCuePoints=this.cue.points.length};n.prototype.deleteCuePoint=function(a){this.cue.chunkId="cue ";var b=this.I();this.G();var c=this.cue.points.length;this.cue.points=[];for(var d=0;d<c;d++)d+1!==a&&this.v(b[d],d+1);this.cue.dwCuePoints=this.cue.points.length;this.cue.dwCuePoints?this.cue.chunkId="cue ":(this.cue.chunkId="",this.G())};n.prototype.updateLabel=function(a,b){var c=this.H();if(null!==c)for(var d=
0,e=this.LIST[c].subChunks.length;d<e;d++)this.LIST[c].subChunks[d].dwName==a&&(this.LIST[c].subChunks[d].value=b)};n.prototype.I=function(){for(var a=[],b=0;b<this.cue.points.length;b++){var c=this.cue.points[b],d=this.za(c.dwName);d.label=d.value?d.value:"";d.dwPosition=c.dwPosition;d.fccChunk=c.fccChunk;d.dwChunkStart=c.dwChunkStart;d.dwBlockStart=c.dwBlockStart;d.dwSampleOffset=c.dwSampleOffset;a.push(d)}return a};n.prototype.za=function(a){var b=this.H(),c={};null!==b&&this.ca(c,b,a);return c};
n.prototype.ca=function(a,b,c){for(var d=0,e=this.LIST[b].subChunks.length;d<e;d++)if(this.LIST[b].subChunks[d].dwName==c){var f=this.LIST[b].subChunks[d];a.value=f.value||a.value;a.dwName=f.dwName||0;a.dwSampleLength=f.dwSampleLength||0;a.dwPurposeID=f.dwPurposeID||0;a.dwCountry=f.dwCountry||0;a.dwLanguage=f.dwLanguage||0;a.dwDialect=f.dwDialect||0;a.dwCodePage=f.dwCodePage||0}};n.prototype.Ga=function(){for(var a=null,b=0,c=this.LIST.length;b<c;b++)if("INFO"===this.LIST[b].format){a=b;break}return a};
n.prototype.H=function(){for(var a=0,b=this.LIST.length;a<b;a++)if("adtl"==this.LIST[a].format)return a;return null};n.prototype.J=function(a){for(var b={LIST:null,w:null},c=0,d=this.LIST.length;c<d;c++)if("INFO"==this.LIST[c].format){b.LIST=c;d=0;for(var e=this.LIST[c].subChunks.length;d<e;d++)if(this.LIST[c].subChunks[d].chunkId==a){b.w=d;break}break}return b};n.prototype.v=function(a,b){this.cue.points.push({dwName:b,dwPosition:a.dwPosition?a.dwPosition:0,fccChunk:a.fccChunk?a.fccChunk:"data",
dwChunkStart:a.dwChunkStart?a.dwChunkStart:0,dwBlockStart:a.dwBlockStart?a.dwBlockStart:0,dwSampleOffset:a.dwSampleOffset});this.ja(a,b)};n.prototype.ha=function(a,b){for(var c=!1,d=0;d<a.length;d++)a[d].dwSampleOffset>b.dwSampleOffset&&!c?(this.v(b,d+1),this.v(a[d],d+2),c=!0):this.v(a[d],c?d+2:d+1);c||this.v(b,this.cue.points.length+1)};n.prototype.G=function(){for(var a=0,b=this.LIST.length;a<b;a++)"adtl"==this.LIST[a].format&&this.LIST.splice(a)};n.prototype.ja=function(a,b){var c=this.H();null===
c&&(this.LIST.push({chunkId:"LIST",chunkSize:4,format:"adtl",subChunks:[]}),c=this.LIST.length-1);this.ia(c,a,b);a.dwSampleLength&&this.ka(c,a,b)};n.prototype.ia=function(a,b,c){this.LIST[a].subChunks.push({chunkId:"labl",chunkSize:4,dwName:c,value:b.label});this.LIST[a].chunkSize+=12};n.prototype.ka=function(a,b,c){this.LIST[a].subChunks.push({chunkId:"ltxt",chunkSize:20,dwName:c,dwSampleLength:b.dwSampleLength,dwPurposeID:b.dwPurposeID||0,dwCountry:b.dwCountry||0,dwLanguage:b.dwLanguage||0,dwDialect:b.dwDialect||
0,dwCodePage:b.dwCodePage||0,value:b.label});this.LIST[a].chunkSize+=28};v.prototype.I=function(a,b){return this.f(Math.round(this.l*a),b)};v.prototype.H=function(a,b){a*=this.l;var c=Math.floor(a);a-=c;return(1-a)*this.f(c,b)+a*this.f(c+1,b)};v.prototype.G=function(a,b){a*=this.l;var c=Math.floor(a),d=[this.v(c,b),this.v(c+1,b)],e=[this.f(c,b),this.f(c+1,b)];a-=c;c=a*a;var f=a*c;return(2*f-3*c+1)*e[0]+(f-2*c+a)*d[0]+(-2*f+3*c)*e[1]+(f-c)*d[1]};v.prototype.J=function(a,b){a*=this.l;var c=Math.floor(a),
d=c-this.B+1;c+=this.B;for(var e=0,f=d,h=d;d<=c?h<=c:h>=c;f=d<=c?++h:--h)e+=this.A(a-f)*this.f(f,b);return e};v.prototype.v=function(a,b){return this.K*(this.f(a+1,b)-this.f(a-1,b))/2};v.prototype.f=function(a,b){return 0<=a&&a<this.F?b[a]:b[this.s(a,this.F)]};r.prototype.c=function(a){this.b.L[this.b.O]=a;for(var b=a=0;b<this.b.L.length;b++)a+=this.a[b]*this.b.L[(this.b.O+b)%this.b.L.length];this.b.O=(this.b.O+1)%this.b.L.length;return a};Q(l,n);l.prototype.toRIFF=function(){this.l(this.fmt.numChannels,
this.fmt.sampleRate,this.bitDepth,Z(this.data.samples,this.f))};l.prototype.toRIFX=function(){this.l(this.fmt.numChannels,this.fmt.sampleRate,this.bitDepth,Z(this.data.samples,this.f),{container:"RIFX"})};l.prototype.toIMAADPCM=function(){if(8E3!==this.fmt.sampleRate)throw Error("Only 8000 Hz files can be compressed as IMA-ADPCM.");if(1!==this.fmt.numChannels)throw Error("Only mono files can be compressed as IMA-ADPCM.");this.B();var a=new Int16Array(this.K());M(this.data.samples,this.f,a);this.l(this.fmt.numChannels,
this.fmt.sampleRate,"4",Ba(a),{container:this.s()})};l.prototype.fromIMAADPCM=function(a){a=void 0===a?"16":a;this.l(this.fmt.numChannels,this.fmt.sampleRate,"16",Da(this.data.samples,this.fmt.blockAlign),{container:this.s()});"16"!=a&&this.toBitDepth(a)};l.prototype.toALaw=function(){this.B();var a=new Int16Array(this.K());M(this.data.samples,this.f,a);this.l(this.fmt.numChannels,this.fmt.sampleRate,"8a",Ea(a),{container:this.s()})};l.prototype.fromALaw=function(a){a=void 0===a?"16":a;this.l(this.fmt.numChannels,
this.fmt.sampleRate,"16",Ga(this.data.samples),{container:this.s()});"16"!=a&&this.toBitDepth(a)};l.prototype.toMuLaw=function(){this.B();var a=new Int16Array(this.K());M(this.data.samples,this.f,a);this.l(this.fmt.numChannels,this.fmt.sampleRate,"8m",Ha(a),{container:this.s()})};l.prototype.fromMuLaw=function(a){a=void 0===a?"16":a;this.l(this.fmt.numChannels,this.fmt.sampleRate,"16",Ja(this.data.samples),{container:this.s()});"16"!=a&&this.toBitDepth(a)};l.prototype.toBitDepth=function(a,b){var c=
a,d=this.bitDepth;void 0===b||b||("32f"!=a&&(c=this.f.h.toString()),d=""+this.f.h);this.P();var e=this.getSamples(!0),f=new Float64Array(e.length),h=d;if(-1<["32f","64"].indexOf(h)&&-1<["32f","64"].indexOf(c))f.set(e);else{ea(h);ea(c);d=Aa(h,c);var k={ba:Math.pow(2,parseInt(h,10))/2,$:Math.pow(2,parseInt(c,10))/2,aa:Math.pow(2,parseInt(h,10))/2-1,Z:Math.pow(2,parseInt(c,10))/2-1};fa(h,e,!0);if(-1<["32f","64"].indexOf(h)){h=e.length;for(var q=0;q<h;q++)1<e[q]?e[q]=1:-1>e[q]&&(e[q]=-1)}for(h=0;h<e.length;h++)f[h]=
d(e[h],k);fa(c,f,!1)}this.l(this.fmt.numChannels,this.fmt.sampleRate,a,f,{container:this.s()})};l.prototype.toSampleRate=function(a,b){b=void 0===b?{}:b;this.na(a);var c=this.getSamples(),d=[];if(c.constructor===Float64Array)d=ma(c,this.fmt.sampleRate,a,b);else for(var e=0;e<c.length;e++)d.push(ma(c[e],this.fmt.sampleRate,a,b));if("64"!==this.bitDepth&&"32f"!==this.bitDepth)if(d[0].constructor===Number)ka(d,this.f.h);else for(c=0;c<d.length;c++)ka(d[c],this.f.h);this.l(this.fmt.numChannels,a,this.bitDepth,
d,{container:this.s()})};l.prototype.na=function(a){if(1>a||4294967295<this.fmt.bitsPerSample/8*this.fmt.numChannels*a)throw Error("Invalid sample rate.");if(-1<["4","8a","8m"].indexOf(this.bitDepth))throw Error("wavefile can't change the sample rate of compressed files.");};l.prototype.B=function(){this.P();"16"!=this.bitDepth&&this.toBitDepth("16")};l.prototype.P=function(){"8a"==this.bitDepth?this.fromALaw():"8m"==this.bitDepth?this.fromMuLaw():"4"==this.bitDepth&&this.fromIMAADPCM()};l.prototype.s=
function(){return"RF64"==this.container?"RIFF":this.container};l.prototype.l=function(a,b,c,d,e){e=void 0===e?{}:e;var f=new n;Object.assign(this.fmt,f.fmt);Object.assign(this.fact,f.fact);Object.assign(this.ds64,f.ds64);Object.assign(this.data,f.data);this.T(a,b,c,d,e)};l.prototype.K=function(){var a=this.data.samples.length/2;a%2&&a++;return a};Q(m,l);m.prototype.fromBase64=function(a){this.fromBuffer(new Uint8Array(wa(a)))};m.prototype.toBase64=function(){for(var a=this.toBuffer(),b="",c=0;c<a.length;c+=
3)b+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"[a[c]>>2],b+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"[(a[c]&3)<<4|a[c+1]>>4],b+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"[(a[c+1]&15)<<2|a[c+2]>>6],b+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"[a[c+2]&63];2===a.length%3?b=b.substring(0,b.length-1)+"=":1===a.length%3&&(b=b.substring(0,b.length-2)+"==");return b};m.prototype.toDataURI=function(){return"data:audio/wav;base64,"+
this.toBase64()};m.prototype.fromDataURI=function(a){this.fromBase64(a.replace("data:audio/wav;base64,",""))};p.WaveFile=m;Object.defineProperty(p,"__esModule",{value:!0})}"object"===typeof exports&&"undefined"!==typeof module?T(exports):"function"===typeof define&&define.amd?define(["exports"],T):(S=S||self,T(S.wavefile={}));

24

externs/wavefile.js

@@ -26,3 +26,3 @@ /*

/**
* @fileoverview Externs for wavefile 10.1
* @fileoverview Externs for wavefile 10.2
* @see https://github.com/rochars/wavefile

@@ -352,8 +352,3 @@ * @externs

* or any value between 8 and 32 (like 12).
* @param {
* !Array<number> |
* !Array<Array<number>> |
* !TypedArray |
* !Array<TypedArray>
* } samples The samples.
* @param {!Array|!TypedArray} samples The samples.
* @param {?Object} options Optional. Used to force the container

@@ -435,2 +430,17 @@ * as RIFX with {container: RIFX}

/**
* Convert the sample rate of the audio.
* @param {number} sampleRate The target sample rate.
* @param {?Object} details The extra configuration, if needed.
*/
WaveFile.prototype.toSampleRate = function(
sampleRate, details= {
method: 'cubic',
clip: 'mirror',
tension: 0,
sincFilterSize: 32,
lanczosFilterSize: 24,
sincWindow: function(x){},
LPForder: 1}) {};
/**
* Encode a 16-bit wave file as 4-bit IMA ADPCM.

@@ -437,0 +447,0 @@ * @throws {Error} If sample rate is not 8000.

11

index.d.ts

@@ -1,2 +0,2 @@

// Type definitions for wavefile 10.1
// Type definitions for wavefile 10.2
// Project: https://github.com/rochars/wavefile

@@ -137,3 +137,3 @@ // Definitions by: Rafael da Silva Rocha <https://github.com/rochars>

* or any value between '8' and '32' (like '12').
* @param {!Array<number>|!Array<Array<number>>|!TypedArray|!!Array<TypedArray>} samples
* @param {!Array|!TypedArray} samples
* @param {?Object} options Optional. Used to force the container

@@ -218,2 +218,9 @@ * as RIFX with {'container': 'RIFX'}

/**
* Convert the sample rate of the audio.
* @param {number} sampleRate The target sample rate.
* @param {?Object} details The extra configuration, if needed.
*/
toSampleRate(samples: number, details?:object): void;
/**
* Encode a 16-bit wave file as 4-bit IMA ADPCM.

@@ -220,0 +227,0 @@ * @throws {Error} If sample rate is not 8000.

2

index.js

@@ -32,3 +32,3 @@ /*

import { encode, decode } from './lib/base64-arraybuffer.js';
import { encode, decode } from './lib/parsers/base64-arraybuffer.js';
import { WaveFileConverter } from './lib/wavefile-converter';

@@ -35,0 +35,0 @@

92

lib/wavefile-converter.js

@@ -30,3 +30,3 @@ /*

import { changeBitDepth as bitDepthLib } from 'bitdepth';
import { changeBitDepth } from 'bitdepth';
import * as imaadpcm from 'imaadpcm';

@@ -36,3 +36,5 @@ import * as alawmulaw from 'alawmulaw';

import { WaveFileMetaEditor } from './wavefile-meta-editor';
import truncateSamples from './truncate-samples';
import { truncateIntSamples } from './parsers/truncate-samples';
import { validateSampleRate } from './validators/validate-sample-rate';
import { resample } from './resampler';

@@ -200,15 +202,18 @@ /**

}
// If the file is compressed, make it
// PCM before changing the bit depth
this.assureUncompressed_();
/** @type {number} */
let sampleCount = this.data.samples.length / (this.dataType.bits / 8);
/** @type {!Float64Array} */
let typedSamplesInput = new Float64Array(sampleCount);
/** @type {!Float64Array} */
let typedSamplesOutput = new Float64Array(sampleCount);
unpackArrayTo(this.data.samples, this.dataType, typedSamplesInput);
if (thisBitDepth == "32f" || thisBitDepth == "64") {
truncateSamples(typedSamplesInput);
}
bitDepthLib(
typedSamplesInput, thisBitDepth, toBitDepth, typedSamplesOutput);
/**
* The original samples, interleaved.
* @type {!Array|!TypedArray}
*/
let samples = this.getSamples(true);
/**
* The container for the new samples.
* @type {!Float64Array}
*/
let newSamples = new Float64Array(samples.length);
// Change the bit depth
changeBitDepth(samples, thisBitDepth, newSamples, toBitDepth);
// Re-create the file
this.fromExisting_(

@@ -218,3 +223,3 @@ this.fmt.numChannels,

newBitDepth,
typedSamplesOutput,
newSamples,
{container: this.correctContainer_()});

@@ -224,2 +229,57 @@ }

/**
* Convert the sample rate of the file.
* @param {number} sampleRate The target sample rate.
* @param {?Object} details The extra configuration, if needed.
*/
toSampleRate(sampleRate, details={}) {
this.validateResample_(sampleRate);
/** @type {!Array|!TypedArray} */
let samples = this.getSamples();
/** @type {!Array|!Float64Array} */
let newSamples = [];
// Mono files
if (samples.constructor === Float64Array) {
newSamples = resample(samples, this.fmt.sampleRate, sampleRate, details);
// Multi-channel files
} else {
for (let i = 0; i < samples.length; i++) {
newSamples.push(resample(
samples[i], this.fmt.sampleRate, sampleRate, details));
}
}
// Truncate samples
if (this.bitDepth !== '64' && this.bitDepth !== '32f') {
// Truncate samples in mono files
if (newSamples[0].constructor === Number) {
truncateIntSamples(newSamples, this.dataType.bits);
// Truncate samples in multi-channel files
} else {
for (let i = 0; i < newSamples.length; i++) {
truncateIntSamples(newSamples[i], this.dataType.bits);
}
}
}
// Recreate the file
this.fromExisting_(
this.fmt.numChannels, sampleRate, this.bitDepth, newSamples,
{'container': this.correctContainer_()});
}
/**
* Validate the conditions for resampling.
* @param {number} sampleRate The target sample rate.
* @throws {Error} If the file cant be resampled.
* @private
*/
validateResample_(sampleRate) {
if (!validateSampleRate(
this.fmt.numChannels, this.fmt.bitsPerSample, sampleRate)) {
throw new Error('Invalid sample rate.');
} else if (['4','8a','8m'].indexOf(this.bitDepth) > -1) {
throw new Error(
'wavefile can\'t change the sample rate of compressed files.');
}
}
/**
* Make the file 16-bit if it is not.

@@ -269,3 +329,3 @@ * @private

* or any value between '8' and '32' (like '12').
* @param {!Array<number>|!Array<!Array<number>>|!TypedArray} samples
* @param {!Array|!TypedArray} samples
* The samples. Must be in the correct range according to the bit depth.

@@ -272,0 +332,0 @@ * @param {?Object} options Optional. Used to force the container

55

lib/wavefile-creator.js

@@ -31,6 +31,5 @@ /*

import { WaveFileParser } from './wavefile-parser';
import { interleave, deInterleave } from './interleave';
import dwChannelMask from './dw-channel-mask';
import validateNumChannels from './validate-num-channels';
import validateSampleRate from './validate-sample-rate';
import { interleave, deInterleave } from './parsers/interleave';
import { validateNumChannels } from './validators/validate-num-channels';
import { validateSampleRate } from './validators/validate-sample-rate';
import { packArrayTo, unpackArrayTo, packTo, unpack } from 'byte-data';

@@ -86,8 +85,3 @@

* or any value between '8' and '32' (like '12').
* @param {
* !Array<number> |
* !Array<Array<number>> |
* !TypedArray |
* !Array<TypedArray>
* } samples The samples.
* @param {!Array|!TypedArray} samples The samples.
* @param {?Object} options Optional. Used to force the container

@@ -135,3 +129,3 @@ * as RIFX with {'container': 'RIFX'}

* false to return the samples de-interleaved. Defaults to false.
* @return {!Float64Array|Array<Float64Array>} the samples.
* @return {!Array|!TypedArray} the samples.
*/

@@ -142,3 +136,3 @@ getSamples(interleaved=false) {

* the length of the samples.
* @type {!Float64Array}
* @type {!Array|!TypedArray}
*/

@@ -235,8 +229,3 @@ let samples = new Float64Array(

* or any value between '8' and '32' (like '12').
* @param {
* !Array<number> |
* !Array<Array<number>> |
* !TypedArray |
* !Array<TypedArray>
* } samples The samples.
* @param {!Array|!TypedArray} samples The samples.
* @param {?Object} options Optional. Used to force the container

@@ -377,3 +366,3 @@ * as RIFX with {'container': 'RIFX'}

this.fmt.validBitsPerSample = parseInt(bitDepthCode, 10);
this.fmt.dwChannelMask = dwChannelMask(numChannels);
this.fmt.dwChannelMask = dwChannelMask_(numChannels);
// subformat 128-bit GUID as 4 32-bit values

@@ -478,1 +467,29 @@ // only supports uncompressed integer PCM samples

}
/**
* Return the value for dwChannelMask according to the number of channels.
* @param {number} numChannels the number of channels.
* @return {number} the dwChannelMask value.
* @private
*/
function dwChannelMask_(numChannels) {
/** @type {number} */
let mask = 0;
// mono = FC
if (numChannels === 1) {
mask = 0x4;
// stereo = FL, FR
} else if (numChannels === 2) {
mask = 0x3;
// quad = FL, FR, BL, BR
} else if (numChannels === 4) {
mask = 0x33;
// 5.1 = FL, FR, FC, LF, BL, BR
} else if (numChannels === 6) {
mask = 0x3F;
// 7.1 = FL, FR, FC, LF, BL, BR, SL, SR
} else if (numChannels === 8) {
mask = 0x63F;
}
return mask;
}

173

lib/wavefile-meta-editor.js

@@ -31,3 +31,2 @@ /*

import { WaveFileCreator } from './wavefile-creator';
import fixRIFFTag from './fix-riff-tag';

@@ -63,3 +62,3 @@ /**

setTag(tag, value) {
tag = fixRIFFTag(tag);
tag = fixRIFFTag_(tag);
/** @type {!Object} */

@@ -222,9 +221,2 @@ let index = this.getTagIndex_(tag);

/**
* Get the current len of the cue points
* in the file before erasing the cue attr
* @type {number}
*/
let len = this.cue.points.length;
// Erase this.cue so it can be re-written

@@ -257,3 +249,3 @@ // after the point is added

// insert the new cue point as the first
if (len === 0) {
if (existingPoints.length === 0) {
this.setCuePoint_(pointData, 1);

@@ -264,32 +256,3 @@

} else {
/** @type {boolean} */
let hasSet = false;
// Iterate over the cue points that existed
// before this one was added
for (let i = 0; i < len; i++) {
// If the new point is located before this original point
// and the new point have not been created, create the
// new point and then the original point
if (existingPoints[i].dwSampleOffset >
pointData.dwSampleOffset && !hasSet) {
// create the new point
this.setCuePoint_(pointData, i + 1);
// create the original point
this.setCuePoint_(existingPoints[i], i + 2);
hasSet = true;
// Otherwise, re-create the original point
} else {
this.setCuePoint_(existingPoints[i], hasSet ? i + 2 : i + 1);
}
}
// If no point was created in the above loop,
// create the new point as the last one
if (!hasSet) {
this.setCuePoint_(pointData, this.cue.points.length + 1);
}
this.setCuePointInOrder_(existingPoints, pointData);
}

@@ -377,31 +340,9 @@ this.cue.dwCuePoints = this.cue.points.length;

/** @type {?number} */
let cIndex = this.getAdtlChunk_();
let LISTindex = this.getAdtlChunk_();
/** @type {!Object} */
let pointData = {};
if (cIndex !== null) {
// got through all chunks in the adtl LIST checking
// for references to this cue point
for (let i = 0, len = this.LIST[cIndex].subChunks.length; i < len; i++) {
if (this.LIST[cIndex].subChunks[i].dwName ==
pointDwName && this.LIST[cIndex].subChunks[i].chunkId) {
/** @type {!Object} */
let chunk = this.LIST[cIndex].subChunks[i];
// Some chunks may reference the point but
// have a empty text; this is to ensure that if
// one chunk that reference the point has a text,
// this value will be kept as the associated data label
// for the cue point.
// If different values are present, the last value found
// will be considered the label for the cue point.
pointData.value = chunk.value ? chunk.value : pointData.value;
pointData.dwName = chunk.dwName ? chunk.dwName : 0;
pointData.dwSampleLength =
chunk.dwSampleLength ? chunk.dwSampleLength : 0;
pointData.dwPurposeID = chunk.dwPurposeID ? chunk.dwPurposeID : 0;
pointData.dwCountry = chunk.dwCountry ? chunk.dwCountry : 0;
pointData.dwLanguage = chunk.dwLanguage ? chunk.dwLanguage : 0;
pointData.dwDialect = chunk.dwDialect ? chunk.dwDialect : 0;
pointData.dwCodePage = chunk.dwCodePage ? chunk.dwCodePage : 0;
}
}
// If there is a adtl LIST in the file, look for
// LIST subchunks with data referencing this point
if (LISTindex !== null) {
this.getCueDataFromLIST_(pointData, LISTindex, pointDwName);
}

@@ -412,2 +353,35 @@ return pointData;

/**
* Get all data associated to a cue point in a LIST chunk.
* @param {!Object} pointData A object to hold the point data.
* @param {number} index The index of the adtl LIST chunk.
* @param {number} pointDwName The ID of the cue point.
* @private
*/
getCueDataFromLIST_(pointData, index, pointDwName) {
// got through all chunks in the adtl LIST checking
// for references to this cue point
for (let i = 0, len = this.LIST[index].subChunks.length; i < len; i++) {
if (this.LIST[index].subChunks[i].dwName == pointDwName) {
/** @type {!Object} */
let chunk = this.LIST[index].subChunks[i];
// Some chunks may reference the point but
// have a empty text; this is to ensure that if
// one chunk that reference the point has a text,
// this value will be kept as the associated data label
// for the cue point.
// If different values are present, the last value found
// will be considered the label for the cue point.
pointData.value = chunk.value || pointData.value;
pointData.dwName = chunk.dwName || 0;
pointData.dwSampleLength = chunk.dwSampleLength || 0;
pointData.dwPurposeID = chunk.dwPurposeID || 0;
pointData.dwCountry = chunk.dwCountry || 0;
pointData.dwLanguage = chunk.dwLanguage || 0;
pointData.dwDialect = chunk.dwDialect || 0;
pointData.dwCodePage = chunk.dwCodePage || 0;
}
}
}
/**
* Return the index of the INFO chunk in the LIST chunk.

@@ -488,2 +462,40 @@ * @return {?number} the index of the INFO chunk.

/**
* Push a new cue point in this.cue.points according to existing cue points.
* @param {!Array} existingPoints Array with the existing points.
* @param {!Object} pointData A object with data of the cue point.
* @private
*/
setCuePointInOrder_(existingPoints, pointData) {
/** @type {boolean} */
let hasSet = false;
// Iterate over the cue points that existed
// before this one was added
for (let i = 0; i < existingPoints.length; i++) {
// If the new point is located before this original point
// and the new point have not been created, create the
// new point and then the original point
if (existingPoints[i].dwSampleOffset >
pointData.dwSampleOffset && !hasSet) {
// create the new point
this.setCuePoint_(pointData, i + 1);
// create the original point
this.setCuePoint_(existingPoints[i], i + 2);
hasSet = true;
// Otherwise, re-create the original point
} else {
this.setCuePoint_(existingPoints[i], hasSet ? i + 2 : i + 1);
}
}
// If no point was created in the above loop,
// create the new point as the last one
if (!hasSet) {
this.setCuePoint_(pointData, this.cue.points.length + 1);
}
}
/**
* Clear any LIST chunk labeled as 'adtl'.

@@ -561,7 +573,7 @@ * @private

dwSampleLength: pointData.dwSampleLength,
dwPurposeID: pointData.dwPurposeID ? pointData.dwPurposeID : 0,
dwCountry: pointData.dwCountry ? pointData.dwCountry : 0,
dwLanguage: pointData.dwLanguage ? pointData.dwLanguage : 0,
dwDialect: pointData.dwDialect ? pointData.dwDialect : 0,
dwCodePage: pointData.dwCodePage ? pointData.dwCodePage : 0,
dwPurposeID: pointData.dwPurposeID || 0,
dwCountry: pointData.dwCountry || 0,
dwLanguage: pointData.dwLanguage || 0,
dwDialect: pointData.dwDialect || 0,
dwCodePage: pointData.dwCodePage || 0,
value: pointData.label // kept for compatibility

@@ -572,1 +584,18 @@ });

}
/**
* Fix a RIFF tag format if possible, throw an error otherwise.
* @param {string} tag The tag name.
* @return {string} The tag name in proper fourCC format.
* @private
*/
function fixRIFFTag_(tag) {
if (tag.constructor !== String) {
throw new Error('Invalid tag name.');
} else if (tag.length < 4) {
for (let i = 0, len = 4 - tag.length; i < len; i++) {
tag += ' ';
}
}
return tag;
}

2

lib/wavefile-parser.js

@@ -31,3 +31,3 @@ /*

import { WaveFileReader } from './wavefile-reader';
import writeString from './write-string';
import { writeString } from './parsers/write-string';
import { packTo, packStringTo, packString, pack } from 'byte-data';

@@ -34,0 +34,0 @@

17

package.json
{
"name": "wavefile",
"version": "10.1.0",
"version": "10.2.0",
"description": "Create, read and write wav files according to the specs.",

@@ -39,3 +39,4 @@ "homepage": "https://github.com/rochars/wavefile",

"iXML",
"cue"
"cue",
"resampler"
],

@@ -71,10 +72,12 @@ "repository": {

"lint": "jshint index.js bin externs lib test/src",
"test": "nyc ./node_modules/mocha/bin/_mocha test/dist test/src test/wavefile-parser test/lib --recursive -R dot --timeout=1600000",
"test-umd": "node ./node_modules/mocha/bin/_mocha test/dist test/src --umd --recursive -R dot --timeout=240000",
"test": "nyc ./node_modules/mocha/bin/_mocha test/resampler test/dist test/src test/wavefile-parser test/lib --recursive -R dot --timeout=1600000",
"test-sr": "nyc ./node_modules/mocha/bin/_mocha test/resampler-full -R dot --timeout=1600000",
"test-sr-sinc": "nyc ./node_modules/mocha/bin/_mocha test/resampler-full/sinc.js -R dot --timeout=1600000",
"test-umd": "node ./node_modules/mocha/bin/_mocha test/resampler test/dist test/src --umd --recursive -R dot --timeout=240000",
"test-tsc": "tsc ./test/TypeScript/index.ts && node -r esm ./test/TypeScript/index.js",
"test-cli": "wavefile ./test/files/M1F1-int12WE-AFsp.wav --tag=ICMT",
"test-dist": "npm run test-umd && npm run test-tsc && npm run test-cli",
"rollup-bundle": "npm test && rollup -c && npm run test-dist",
"rollup-bundle": "rollup -c && npm run test-dist",
"doc": "./node_modules/.bin/jsdoc -c .jsdocrc -d docs -r README.md -t node_modules/docdash",
"build": "npm run lint && npm run rollup-bundle && npm run doc",
"build": "npm run lint && npm test && npm run rollup-bundle && npm run doc",
"coverage": "nyc report --reporter=lcov > coverage.lcov && codecov"

@@ -99,3 +102,3 @@ },

"alawmulaw": "^5.0.2",
"bitdepth": "^8.0.0",
"bitdepth": "^9.0.0",
"byte-data": "^18.0.4",

@@ -102,0 +105,0 @@ "imaadpcm": "^5.0.0"

76

README.md

@@ -26,2 +26,3 @@ # wavefile

- Change the bit depth of the audio
- Change the sample rate of the audio
- Read and write RIFF tags

@@ -160,2 +161,3 @@ - Set and delete cue points and their labels

* [Change the bit depth](#change-the-bit-depth)
* [Change the sample rate](#change-the-sample-rate)
* [Add BWF metadata](#add-bwf-metadata)

@@ -375,3 +377,3 @@ * [RF64](#rf64)

### Change the bit depth
You can change the bit depth of the audio with the **toBitDepth(bitDepth)** method.
You can change the bit depth of the audio with the **toBitDepth(bitDepth)** method. WaveFile only change the bit depth of the samples; no dithering is done.
```javascript

@@ -388,2 +390,37 @@ // Load a wav file with 32-bit audio

### Change the sample rate
You can change the sample rate of the audio with the **toSampleRate()** method. By default, **cubic interpolation** is used to resample the data. You can use **cubic** and **sinc**.
```javascript
// Load a wav file with 16kHz audio
let wav = new WaveFile(fs.readFileSync("16kHz-file.wav"));
// Change the bit depth to 44.1kHz
// using the default configuration
wav.toSampleRate(44100);
// this is the same as:
// wav.toSampleRate(44100, {method: "cubic"});
// Write the new 44.1kHz file
fs.writeFileSync("44100Hz-file.wav", wav.toBuffer());
```
To use another method:
```javascript
// Change the bit depth to 44.1kHz using sinc
wav.toSampleRate(44100, {method: "sinc"});
```
#### Changing the sample rate of ADPCM, mu-Law or A-Law
You need to convert compressed files to standard PCM before resampling:
To resample a mu-Law file:
```javascript
// convert the file to PCM
wav.fromMuLaw();
// resample
wav.toSampleRate(44100, {method: "sinc"});
// back to mu-Law
wav.toMuLaw();
```
### Add BWF metadata

@@ -494,8 +531,3 @@ To add BWF data to a file you can use the **bext** property:

* or any value between '8' and '32' (like '12').
* @param {
* !Array<number> |
* !Array<Array<number>> |
* !TypedArray |
* !Array<TypedArray>
* } samples The samples.
* @param {!Array|!TypedArray} samples The samples.
* @param {?Object} options Optional. Used to force the container

@@ -574,2 +606,9 @@ * as RIFX with {'container': 'RIFX'}

/**
* Convert the sample rate of the audio.
* @param {number} sampleRate The target sample rate.
* @param {?Object} details The extra configuration, if needed.
*/
WaveFile.toSampleRate(sampleRate, details={}) {};
/**
* Encode a 16-bit wave file as 4-bit IMA ADPCM.

@@ -646,12 +685,3 @@ * @throws {Error} If sample rate is not 8000.

* Create a cue point in the wave file.
* @param {!{
* position: number,
* label: ?string,
* end: ?number,
* dwPurposeID: ?number,
* dwCountry: ?number,
* dwLanguage: ?number,
* dwDialect: ?number,
* dwCodePage: ?number
* }} pointData A object with the data of the cue point.
* @param {!Object} pointData A object with the data of the cue point.
*

@@ -675,2 +705,14 @@ * # Only required attribute to create a cue point:

* pointData.dwCodePage
*
* # This is what a complete pointData object look like:
* {
* position: number,
* label: ?string,
* end: ?number,
* dwPurposeID: ?number,
* dwCountry: ?number,
* dwLanguage: ?number,
* dwDialect: ?number,
* dwCodePage: ?number
* }
*/

@@ -677,0 +719,0 @@ WaveFile.setCuePoint(pointData) {}

lib/base64-arraybuffer.js
lib/dw-channel-mask.js
lib/fix-riff-tag.js
lib/interleave.js
lib/truncate-samples.js
lib/validate-num-channels.js
lib/validate-sample-rate.js
lib/write-string.js
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