exif.min.js

!function(){function i(a){return!!a.exifdata}function j(a,b){var c,d,e,f,g;for(b=b||a.match(/^data\:([^\;]+)\;base64,/im)[1]||"",a=a.replace(/^data\:([^\;]+)\;base64,/gim,""),c=atob(a),d=c.length,e=new ArrayBuffer(d),f=new Uint8Array(e),g=0;d>g;g++)f[g]=c.charCodeAt(g);return e}function k(a,b){var c=new XMLHttpRequest;c.open("GET",a,!0),c.responseType="blob",c.onload=function(){(200==this.status||0===this.status)&&b(this.response)},c.send()}function l(b,c){function d(a){var d=m(a),e=o(a);b.exifdata=d||{},b.iptcdata=e||{},c&&c.call(b)}var e,f,g;b.src?/^data\:/i.test(b.src)?(e=j(b.src),d(e)):/^blob\:/i.test(b.src)?(f=new FileReader,f.onload=function(a){d(a.target.result)},k(b.src,function(a){f.readAsArrayBuffer(a)})):(g=new XMLHttpRequest,g.onload=function(){if(200!=this.status&&0!==this.status)throw"Could not load image";d(g.response),g=null},g.open("GET",b.src,!0),g.responseType="arraybuffer",g.send(null)):window.FileReader&&(b instanceof window.Blob||b instanceof window.File)&&(f=new FileReader,f.onload=function(b){a&&console.log("Got file of length "+b.target.result.byteLength),d(b.target.result)},f.readAsArrayBuffer(b))}function m(b){var f,d,e,c=new DataView(b);if(a&&console.log("Got file of length "+b.byteLength),255!=c.getUint8(0)||216!=c.getUint8(1))return a&&console.log("Not a valid JPEG"),!1;for(d=2,e=b.byteLength;e>d;){if(255!=c.getUint8(d))return a&&console.log("Not a valid marker at offset "+d+", found: "+c.getUint8(d)),!1;if(f=c.getUint8(d+1),a&&console.log(f),225==f)return a&&console.log("Found 0xFFE1 marker"),u(c,d+4,c.getUint16(d+2)-2);d+=2+c.getUint16(d+2)}}function o(b){var d,e,f,g,h,i,c=new DataView(b);if(a&&console.log("Got file of length "+b.byteLength),255!=c.getUint8(0)||216!=c.getUint8(1))return a&&console.log("Not a valid JPEG"),!1;for(d=2,e=b.byteLength,f=function(a,b){return 56===a.getUint8(b)&&66===a.getUint8(b+1)&&73===a.getUint8(b+2)&&77===a.getUint8(b+3)&&4===a.getUint8(b+4)&&4===a.getUint8(b+5)};e>d;){if(f(c,d))return g=c.getUint8(d+7),0!==g%2&&(g+=1),0===g&&(g=4),h=d+8+g,i=c.getUint16(d+6+g),q(b,h,i);d++}}function q(a,b,c){for(var f,g,h,i,j,d=new DataView(a),e={},k=b;b+c>k;)28===d.getUint8(k)&&2===d.getUint8(k+1)&&(i=d.getUint8(k+2),i in p&&(h=d.getInt16(k+3),j=h+5,g=p[i],f=t(d,k+5,h),e.hasOwnProperty(g)?e[g]instanceof Array?e[g].push(f):e[g]=[e[g],f]:e[g]=f)),k++;return e}function r(b,c,d,e,f){var i,j,k,g=b.getUint16(d,!f),h={};for(k=0;g>k;k++)i=d+12*k+2,j=e[b.getUint16(i,!f)],!j&&a&&console.log("Unknown tag: "+b.getUint16(i,!f)),h[j]=s(b,i,c,d,f);return h}function s(a,b,c,d,e){var i,j,k,l,m,n,f=a.getUint16(b+2,!e),g=a.getUint32(b+4,!e),h=a.getUint32(b+8,!e)+c;switch(f){case 1:case 7:if(1==g)return a.getUint8(b+8,!e);for(i=g>4?h:b+8,j=[],l=0;g>l;l++)j[l]=a.getUint8(i+l);return j;case 2:return i=g>4?h:b+8,t(a,i,g-1);case 3:if(1==g)return a.getUint16(b+8,!e);for(i=g>2?h:b+8,j=[],l=0;g>l;l++)j[l]=a.getUint16(i+2*l,!e);return j;case 4:if(1==g)return a.getUint32(b+8,!e);for(j=[],l=0;g>l;l++)j[l]=a.getUint32(h+4*l,!e);return j;case 5:if(1==g)return m=a.getUint32(h,!e),n=a.getUint32(h+4,!e),k=new Number(m/n),k.numerator=m,k.denominator=n,k;for(j=[],l=0;g>l;l++)m=a.getUint32(h+8*l,!e),n=a.getUint32(h+4+8*l,!e),j[l]=new Number(m/n),j[l].numerator=m,j[l].denominator=n;return j;case 9:if(1==g)return a.getInt32(b+8,!e);for(j=[],l=0;g>l;l++)j[l]=a.getInt32(h+4*l,!e);return j;case 10:if(1==g)return a.getInt32(h,!e)/a.getInt32(h+4,!e);for(j=[],l=0;g>l;l++)j[l]=a.getInt32(h+8*l,!e)/a.getInt32(h+4+8*l,!e);return j}}function t(a,b,c){var d="";for(var n=b;b+c>n;n++)d+=String.fromCharCode(a.getUint8(n));return d}function u(b,c){var h,i,j,k,l,m,n;if("Exif"!=t(b,c,4))return a&&console.log("Not valid EXIF data! "+t(b,c,4)),!1;if(m=c+6,18761==b.getUint16(m))h=!1;else{if(19789!=b.getUint16(m))return a&&console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)"),!1;h=!0}if(42!=b.getUint16(m+2,!h))return a&&console.log("Not valid TIFF data! (no 0x002A)"),!1;if(n=b.getUint32(m+4,!h),8>n)return a&&console.log("Not valid TIFF data! (First offset less than 8)",b.getUint32(m+4,!h)),!1;if(i=r(b,m,m+n,e,h),i.ExifIFDPointer){k=r(b,m,m+i.ExifIFDPointer,d,h);for(j in k){switch(j){case"LightSource":case"Flash":case"MeteringMode":case"ExposureProgram":case"SensingMethod":case"SceneCaptureType":case"SceneType":case"CustomRendered":case"WhiteBalance":case"GainControl":case"Contrast":case"Saturation":case"Sharpness":case"SubjectDistanceRange":case"FileSource":k[j]=g[j][k[j]];break;case"ExifVersion":case"FlashpixVersion":k[j]=String.fromCharCode(k[j][0],k[j][1],k[j][2],k[j][3]);break;case"ComponentsConfiguration":k[j]=g.Components[k[j][0]]+g.Components[k[j][1]]+g.Components[k[j][2]]+g.Components[k[j][3]]}i[j]=k[j]}}if(i.GPSInfoIFDPointer){l=r(b,m,m+i.GPSInfoIFDPointer,f,h);for(j in l){switch(j){case"GPSVersionID":l[j]=l[j][0]+"."+l[j][1]+"."+l[j][2]+"."+l[j][3]}i[j]=l[j]}}return i}var d,e,f,g,p,a=!1,b=this,c=function(a){return a instanceof c?a:this instanceof c?(this.EXIFwrapped=a,void 0):new c(a)};"undefined"!=typeof exports?("undefined"!=typeof module&&module.exports&&(exports=module.exports=c),exports.EXIF=c):b.EXIF=c,d=c.Tags={36864:"ExifVersion",40960:"FlashpixVersion",40961:"ColorSpace",40962:"PixelXDimension",40963:"PixelYDimension",37121:"ComponentsConfiguration",37122:"CompressedBitsPerPixel",37500:"MakerNote",37510:"UserComment",40964:"RelatedSoundFile",36867:"DateTimeOriginal",36868:"DateTimeDigitized",37520:"SubsecTime",37521:"SubsecTimeOriginal",37522:"SubsecTimeDigitized",33434:"ExposureTime",33437:"FNumber",34850:"ExposureProgram",34852:"SpectralSensitivity",34855:"ISOSpeedRatings",34856:"OECF",37377:"ShutterSpeedValue",37378:"ApertureValue",37379:"BrightnessValue",37380:"ExposureBias",37381:"MaxApertureValue",37382:"SubjectDistance",37383:"MeteringMode",37384:"LightSource",37385:"Flash",37396:"SubjectArea",37386:"FocalLength",41483:"FlashEnergy",41484:"SpatialFrequencyResponse",41486:"FocalPlaneXResolution",41487:"FocalPlaneYResolution",41488:"FocalPlaneResolutionUnit",41492:"SubjectLocation",41493:"ExposureIndex",41495:"SensingMethod",41728:"FileSource",41729:"SceneType",41730:"CFAPattern",41985:"CustomRendered",41986:"ExposureMode",41987:"WhiteBalance",41988:"DigitalZoomRation",41989:"FocalLengthIn35mmFilm",41990:"SceneCaptureType",41991:"GainControl",41992:"Contrast",41993:"Saturation",41994:"Sharpness",41995:"DeviceSettingDescription",41996:"SubjectDistanceRange",40965:"InteroperabilityIFDPointer",42016:"ImageUniqueID"},e=c.TiffTags={256:"ImageWidth",257:"ImageHeight",34665:"ExifIFDPointer",34853:"GPSInfoIFDPointer",40965:"InteroperabilityIFDPointer",258:"BitsPerSample",259:"Compression",262:"PhotometricInterpretation",274:"Orientation",277:"SamplesPerPixel",284:"PlanarConfiguration",530:"YCbCrSubSampling",531:"YCbCrPositioning",282:"XResolution",283:"YResolution",296:"ResolutionUnit",273:"StripOffsets",278:"RowsPerStrip",279:"StripByteCounts",513:"JPEGInterchangeFormat",514:"JPEGInterchangeFormatLength",301:"TransferFunction",318:"WhitePoint",319:"PrimaryChromaticities",529:"YCbCrCoefficients",532:"ReferenceBlackWhite",306:"DateTime",270:"ImageDescription",271:"Make",272:"Model",305:"Software",315:"Artist",33432:"Copyright"},f=c.GPSTags={0:"GPSVersionID",1:"GPSLatitudeRef",2:"GPSLatitude",3:"GPSLongitudeRef",4:"GPSLongitude",5:"GPSAltitudeRef",6:"GPSAltitude",7:"GPSTimeStamp",8:"GPSSatellites",9:"GPSStatus",10:"GPSMeasureMode",11:"GPSDOP",12:"GPSSpeedRef",13:"GPSSpeed",14:"GPSTrackRef",15:"GPSTrack",16:"GPSImgDirectionRef",17:"GPSImgDirection",18:"GPSMapDatum",19:"GPSDestLatitudeRef",20:"GPSDestLatitude",21:"GPSDestLongitudeRef",22:"GPSDestLongitude",23:"GPSDestBearingRef",24:"GPSDestBearing",25:"GPSDestDistanceRef",26:"GPSDestDistance",27:"GPSProcessingMethod",28:"GPSAreaInformation",29:"GPSDateStamp",30:"GPSDifferential"},g=c.StringValues={ExposureProgram:{0:"Not defined",1:"Manual",2:"Normal program",3:"Aperture priority",4:"Shutter priority",5:"Creative program",6:"Action program",7:"Portrait mode",8:"Landscape mode"},MeteringMode:{0:"Unknown",1:"Average",2:"CenterWeightedAverage",3:"Spot",4:"MultiSpot",5:"Pattern",6:"Partial",255:"Other"},LightSource:{0:"Unknown",1:"Daylight",2:"Fluorescent",3:"Tungsten (incandescent light)",4:"Flash",9:"Fine weather",10:"Cloudy weather",11:"Shade",12:"Daylight fluorescent (D 5700 - 7100K)",13:"Day white fluorescent (N 4600 - 5400K)",14:"Cool white fluorescent (W 3900 - 4500K)",15:"White fluorescent (WW 3200 - 3700K)",17:"Standard light A",18:"Standard light B",19:"Standard light C",20:"D55",21:"D65",22:"D75",23:"D50",24:"ISO studio tungsten",255:"Other"},Flash:{0:"Flash did not fire",1:"Flash fired",5:"Strobe return light not detected",7:"Strobe return light detected",9:"Flash fired, compulsory flash mode",13:"Flash fired, compulsory flash mode, return light not detected",15:"Flash fired, compulsory flash mode, return light detected",16:"Flash did not fire, compulsory flash mode",24:"Flash did not fire, auto mode",25:"Flash fired, auto mode",29:"Flash fired, auto mode, return light not detected",31:"Flash fired, auto mode, return light detected",32:"No flash function",65:"Flash fired, red-eye reduction mode",69:"Flash fired, red-eye reduction mode, return light not detected",71:"Flash fired, red-eye reduction mode, return light detected",73:"Flash fired, compulsory flash mode, red-eye reduction mode",77:"Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",79:"Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",89:"Flash fired, auto mode, red-eye reduction mode",93:"Flash fired, auto mode, return light not detected, red-eye reduction mode",95:"Flash fired, auto mode, return light detected, red-eye reduction mode"},SensingMethod:{1:"Not defined",2:"One-chip color area sensor",3:"Two-chip color area sensor",4:"Three-chip color area sensor",5:"Color sequential area sensor",7:"Trilinear sensor",8:"Color sequential linear sensor"},SceneCaptureType:{0:"Standard",1:"Landscape",2:"Portrait",3:"Night scene"},SceneType:{1:"Directly photographed"},CustomRendered:{0:"Normal process",1:"Custom process"},WhiteBalance:{0:"Auto white balance",1:"Manual white balance"},GainControl:{0:"None",1:"Low gain up",2:"High gain up",3:"Low gain down",4:"High gain down"},Contrast:{0:"Normal",1:"Soft",2:"Hard"},Saturation:{0:"Normal",1:"Low saturation",2:"High saturation"},Sharpness:{0:"Normal",1:"Soft",2:"Hard"},SubjectDistanceRange:{0:"Unknown",1:"Macro",2:"Close view",3:"Distant view"},FileSource:{3:"DSC"},Components:{0:"",1:"Y",2:"Cb",3:"Cr",4:"R",5:"G",6:"B"}},p={120:"caption",110:"credit",25:"keywords",55:"dateCreated",80:"byline",85:"bylineTitle",122:"captionWriter",105:"headline",116:"copyright",15:"category"},c.getData=function(a,b){return(a instanceof Image||a instanceof HTMLImageElement)&&!a.complete?!1:(i(a)?b&&b.call(a):l(a,b),!0)},c.getTag=function(a,b){return i(a)?a.exifdata[b]:void 0},c.getAllTags=function(a){if(!i(a))return{};var b,c=a.exifdata,d={};for(b in c)c.hasOwnProperty(b)&&(d[b]=c[b]);return d},c.pretty=function(a){if(!i(a))return"";var b,c=a.exifdata,d="";for(b in c)c.hasOwnProperty(b)&&(d+="object"==typeof c[b]?c[b]instanceof Number?b+" : "+c[b]+" ["+c[b].numerator+"/"+c[b].denominator+"]\r\n":b+" : ["+c[b].length+" values]\r\n":b+" : "+c[b]+"\r\n");return d},c.readFromBinaryFile=function(a){return m(a)},"function"==typeof define&&define.amd&&define("exif-js",[],function(){return c})}.call(this);