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exif-js

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exif-js - npm Package Compare versions

Comparing version 1.0.7 to 2.0.0

bower.json

433

exif.js

@@ -1,84 +0,99 @@

BinaryAjax = require('./binaryajax');
(function() {
var EXIF = (function() {
var debug = false;
var ExifTags = {
var root = this;
var EXIF = function(obj) {
if (obj instanceof EXIF) return obj;
if (!(this instanceof EXIF)) return new EXIF(obj);
this.EXIFwrapped = obj;
};
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = EXIF;
}
exports.EXIF = EXIF;
} else {
root.EXIF = EXIF;
}
var ExifTags = EXIF.Tags = {
// version tags
0x9000 : "ExifVersion", // EXIF version
0xA000 : "FlashpixVersion", // Flashpix format version
0x9000 : "ExifVersion", // EXIF version
0xA000 : "FlashpixVersion", // Flashpix format version
// colorspace tags
0xA001 : "ColorSpace", // Color space information tag
0xA001 : "ColorSpace", // Color space information tag
// image configuration
0xA002 : "PixelXDimension", // Valid width of meaningful image
0xA003 : "PixelYDimension", // Valid height of meaningful image
0x9101 : "ComponentsConfiguration", // Information about channels
0x9102 : "CompressedBitsPerPixel", // Compressed bits per pixel
0xA002 : "PixelXDimension", // Valid width of meaningful image
0xA003 : "PixelYDimension", // Valid height of meaningful image
0x9101 : "ComponentsConfiguration", // Information about channels
0x9102 : "CompressedBitsPerPixel", // Compressed bits per pixel
// user information
0x927C : "MakerNote", // Any desired information written by the manufacturer
0x9286 : "UserComment", // Comments by user
0x927C : "MakerNote", // Any desired information written by the manufacturer
0x9286 : "UserComment", // Comments by user
// related file
0xA004 : "RelatedSoundFile", // Name of related sound file
0xA004 : "RelatedSoundFile", // Name of related sound file
// date and time
0x9003 : "DateTimeOriginal", // Date and time when the original image was generated
0x9004 : "DateTimeDigitized", // Date and time when the image was stored digitally
0x9290 : "SubsecTime", // Fractions of seconds for DateTime
0x9291 : "SubsecTimeOriginal", // Fractions of seconds for DateTimeOriginal
0x9292 : "SubsecTimeDigitized", // Fractions of seconds for DateTimeDigitized
0x9003 : "DateTimeOriginal", // Date and time when the original image was generated
0x9004 : "DateTimeDigitized", // Date and time when the image was stored digitally
0x9290 : "SubsecTime", // Fractions of seconds for DateTime
0x9291 : "SubsecTimeOriginal", // Fractions of seconds for DateTimeOriginal
0x9292 : "SubsecTimeDigitized", // Fractions of seconds for DateTimeDigitized
// picture-taking conditions
0x829A : "ExposureTime", // Exposure time (in seconds)
0x829D : "FNumber", // F number
0x8822 : "ExposureProgram", // Exposure program
0x8824 : "SpectralSensitivity", // Spectral sensitivity
0x8827 : "ISOSpeedRatings", // ISO speed rating
0x8828 : "OECF", // Optoelectric conversion factor
0x9201 : "ShutterSpeedValue", // Shutter speed
0x9202 : "ApertureValue", // Lens aperture
0x9203 : "BrightnessValue", // Value of brightness
0x9204 : "ExposureBias", // Exposure bias
0x9205 : "MaxApertureValue", // Smallest F number of lens
0x9206 : "SubjectDistance", // Distance to subject in meters
0x9207 : "MeteringMode", // Metering mode
0x9208 : "LightSource", // Kind of light source
0x9209 : "Flash", // Flash status
0x9214 : "SubjectArea", // Location and area of main subject
0x920A : "FocalLength", // Focal length of the lens in mm
0xA20B : "FlashEnergy", // Strobe energy in BCPS
0xA20C : "SpatialFrequencyResponse", //
0xA20E : "FocalPlaneXResolution", // Number of pixels in width direction per FocalPlaneResolutionUnit
0xA20F : "FocalPlaneYResolution", // Number of pixels in height direction per FocalPlaneResolutionUnit
0xA210 : "FocalPlaneResolutionUnit", // Unit for measuring FocalPlaneXResolution and FocalPlaneYResolution
0xA214 : "SubjectLocation", // Location of subject in image
0xA215 : "ExposureIndex", // Exposure index selected on camera
0xA217 : "SensingMethod", // Image sensor type
0xA300 : "FileSource", // Image source (3 == DSC)
0xA301 : "SceneType", // Scene type (1 == directly photographed)
0xA302 : "CFAPattern", // Color filter array geometric pattern
0xA401 : "CustomRendered", // Special processing
0xA402 : "ExposureMode", // Exposure mode
0xA403 : "WhiteBalance", // 1 = auto white balance, 2 = manual
0xA404 : "DigitalZoomRation", // Digital zoom ratio
0xA405 : "FocalLengthIn35mmFilm", // Equivalent foacl length assuming 35mm film camera (in mm)
0xA406 : "SceneCaptureType", // Type of scene
0xA407 : "GainControl", // Degree of overall image gain adjustment
0xA408 : "Contrast", // Direction of contrast processing applied by camera
0xA409 : "Saturation", // Direction of saturation processing applied by camera
0xA40A : "Sharpness", // Direction of sharpness processing applied by camera
0xA40B : "DeviceSettingDescription", //
0xA40C : "SubjectDistanceRange", // Distance to subject
0x829A : "ExposureTime", // Exposure time (in seconds)
0x829D : "FNumber", // F number
0x8822 : "ExposureProgram", // Exposure program
0x8824 : "SpectralSensitivity", // Spectral sensitivity
0x8827 : "ISOSpeedRatings", // ISO speed rating
0x8828 : "OECF", // Optoelectric conversion factor
0x9201 : "ShutterSpeedValue", // Shutter speed
0x9202 : "ApertureValue", // Lens aperture
0x9203 : "BrightnessValue", // Value of brightness
0x9204 : "ExposureBias", // Exposure bias
0x9205 : "MaxApertureValue", // Smallest F number of lens
0x9206 : "SubjectDistance", // Distance to subject in meters
0x9207 : "MeteringMode", // Metering mode
0x9208 : "LightSource", // Kind of light source
0x9209 : "Flash", // Flash status
0x9214 : "SubjectArea", // Location and area of main subject
0x920A : "FocalLength", // Focal length of the lens in mm
0xA20B : "FlashEnergy", // Strobe energy in BCPS
0xA20C : "SpatialFrequencyResponse", //
0xA20E : "FocalPlaneXResolution", // Number of pixels in width direction per FocalPlaneResolutionUnit
0xA20F : "FocalPlaneYResolution", // Number of pixels in height direction per FocalPlaneResolutionUnit
0xA210 : "FocalPlaneResolutionUnit", // Unit for measuring FocalPlaneXResolution and FocalPlaneYResolution
0xA214 : "SubjectLocation", // Location of subject in image
0xA215 : "ExposureIndex", // Exposure index selected on camera
0xA217 : "SensingMethod", // Image sensor type
0xA300 : "FileSource", // Image source (3 == DSC)
0xA301 : "SceneType", // Scene type (1 == directly photographed)
0xA302 : "CFAPattern", // Color filter array geometric pattern
0xA401 : "CustomRendered", // Special processing
0xA402 : "ExposureMode", // Exposure mode
0xA403 : "WhiteBalance", // 1 = auto white balance, 2 = manual
0xA404 : "DigitalZoomRation", // Digital zoom ratio
0xA405 : "FocalLengthIn35mmFilm", // Equivalent foacl length assuming 35mm film camera (in mm)
0xA406 : "SceneCaptureType", // Type of scene
0xA407 : "GainControl", // Degree of overall image gain adjustment
0xA408 : "Contrast", // Direction of contrast processing applied by camera
0xA409 : "Saturation", // Direction of saturation processing applied by camera
0xA40A : "Sharpness", // Direction of sharpness processing applied by camera
0xA40B : "DeviceSettingDescription", //
0xA40C : "SubjectDistanceRange", // Distance to subject
// other tags
0xA005 : "InteroperabilityIFDPointer",
0xA420 : "ImageUniqueID" // Identifier assigned uniquely to each image
0xA420 : "ImageUniqueID" // Identifier assigned uniquely to each image
};
var TiffTags = {
var TiffTags = EXIF.TiffTags = {
0x0100 : "ImageWidth",

@@ -119,3 +134,3 @@ 0x0101 : "ImageHeight",

var GPSTags = {
var GPSTags = EXIF.GPSTags = {
0x0000 : "GPSVersionID",

@@ -154,3 +169,3 @@ 0x0001 : "GPSLatitudeRef",

var StringValues = {
var StringValues = EXIF.StringValues = {
ExposureProgram : {

@@ -294,6 +309,6 @@ 0 : "Not defined",

function addEvent(element, event, handler) {
if (element.addEventListener) {
element.addEventListener(event, handler, false);
} else if (element.attachEvent) {
element.attachEvent("on" + event, handler);
if (element.addEventListener) {
element.addEventListener(event, handler, false);
} else if (element.attachEvent) {
element.attachEvent("on" + event, handler);
}

@@ -306,8 +321,36 @@ }

function base64ToArrayBuffer(base64, contentType) {
contentType = contentType || base64.match(/^data\:([^\;]+)\;base64,/mi)[1] || ''; // e.g. 'data:image/jpeg;base64,...' => 'image/jpeg'
base64 = base64.replace(/^data\:([^\;]+)\;base64,/gmi, '');
var binary = atob(base64);
var len = binary.length;
var buffer = new ArrayBuffer(len);
var view = new Uint8Array(buffer);
for (var i = 0; i < len; i++) {
view[i] = binary.charCodeAt(i);
}
return buffer;
}
function objectURLToBlob(url, callback) {
var http = new XMLHttpRequest();
http.open("GET", url, true);
http.responseType = "blob";
http.onload = function(e) {
if (this.status == 200 || this.status === 0) {
callback(this.response);
}
};
http.send();
}
function getImageData(img, callback) {
function handleBinaryFile(binFile) {
var data = findEXIFinJPEG(binFile);
var iptcdata = findIPTCinJPEG(binFile);
img.exifdata = data || {};
img.iptcdata = iptcdata || {};
if (callback) {
callback.call(img)
callback.call(img);
}

@@ -317,10 +360,32 @@ }

if (img instanceof Image || img instanceof HTMLImageElement) {
BinaryAjax(img.src, function(http) {
handleBinaryFile(http.binaryResponse);
});
} else if (window.FileReader && img instanceof window.File) {
if (/^data\:/i.test(img.src)) { // Data URI
var arrayBuffer = base64ToArrayBuffer(img.src);
handleBinaryFile(arrayBuffer);
} else if (/^blob\:/i.test(img.src)) { // Object URL
var fileReader = new FileReader();
fileReader.onload = function(e) {
handleBinaryFile(e.target.result);
};
objectURLToBlob(img.src, function (blob) {
fileReader.readAsArrayBuffer(blob);
});
} else {
var http = new XMLHttpRequest();
http.onload = function() {
if (http.status == "200") {
handleBinaryFile(http.response);
} else {
throw "Could not load image";
}
http = null;
};
http.open("GET", img.src, true);
http.responseType = "arraybuffer";
http.send(null);
}
} else if (window.FileReader && (img instanceof window.Blob || img instanceof window.File)) {
var fileReader = new FileReader();
fileReader.onload = function(e) {
if (debug) console.log("Got file of length " + e.target.result.byteLength);
if (debug) console.log("Got file of length " + e.target.result.byteLength);
handleBinaryFile(e.target.result);

@@ -333,6 +398,6 @@ };

function findEXIFinJPEG(file) {
var dataView = new DataView(file);
if (debug) console.log("Got file of length " + file.byteLength);
function findEXIFinJPEG(file) {
var dataView = new DataView(file);
if (debug) console.log("Got file of length " + file.byteLength);
if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {

@@ -349,3 +414,3 @@ if (debug) console.log("Not a valid JPEG");

if (dataView.getUint8(offset) != 0xFF) {
if (debug) console.log("Not a valid marker at offset " + offset + ", found: " + file.getByteAt(offset));
if (debug) console.log("Not a valid marker at offset " + offset + ", found: " + dataView.getUint8(offset));
return false; // not a valid marker, something is wrong

@@ -355,5 +420,5 @@ }

marker = dataView.getUint8(offset + 1);
if (debug) console.log(marker);
if (debug) console.log(marker);
// we could implement handling for other markers here,
// we could implement handling for other markers here,
// but we're only looking for 0xFFE1 for EXIF data

@@ -363,5 +428,5 @@

if (debug) console.log("Found 0xFFE1 marker");
return readEXIFData(dataView, offset + 4, dataView.getUint16(offset + 2) - 2);
// offset += 2 + file.getShortAt(offset+2, true);

@@ -377,9 +442,109 @@

function findIPTCinJPEG(file) {
var dataView = new DataView(file);
if (debug) console.log("Got file of length " + file.byteLength);
if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {
if (debug) console.log("Not a valid JPEG");
return false; // not a valid jpeg
}
var offset = 2,
length = file.byteLength;
var isFieldSegmentStart = function(dataView, offset){
return (
dataView.getUint8(offset) === 0x38 &&
dataView.getUint8(offset+1) === 0x42 &&
dataView.getUint8(offset+2) === 0x49 &&
dataView.getUint8(offset+3) === 0x4D &&
dataView.getUint8(offset+4) === 0x04 &&
dataView.getUint8(offset+5) === 0x04
);
};
while (offset < length) {
if ( isFieldSegmentStart(dataView, offset )){
// Get the length of the name header (which is padded to an even number of bytes)
var nameHeaderLength = dataView.getUint8(offset+7);
if(nameHeaderLength % 2 !== 0) nameHeaderLength += 1;
// Check for pre photoshop 6 format
if(nameHeaderLength === 0) {
// Always 4
nameHeaderLength = 4;
}
var startOffset = offset + 8 + nameHeaderLength;
var sectionLength = dataView.getUint16(offset + 6 + nameHeaderLength);
return readIPTCData(file, startOffset, sectionLength);
break;
}
// Not the marker, continue searching
offset++;
}
}
var IptcFieldMap = {
0x78 : 'caption',
0x6E : 'credit',
0x19 : 'keywords',
0x37 : 'dateCreated',
0x50 : 'byline',
0x55 : 'bylineTitle',
0x7A : 'captionWriter',
0x69 : 'headline',
0x74 : 'copyright',
0x0F : 'category'
};
function readIPTCData(file, startOffset, sectionLength){
var dataView = new DataView(file);
var data = {};
var fieldValue, fieldName, dataSize, segmentType, segmentSize;
var segmentStartPos = startOffset;
while(segmentStartPos < startOffset+sectionLength) {
if(dataView.getUint8(segmentStartPos) === 0x1C && dataView.getUint8(segmentStartPos+1) === 0x02){
segmentType = dataView.getUint8(segmentStartPos+2);
if(segmentType in IptcFieldMap) {
dataSize = dataView.getInt16(segmentStartPos+3);
segmentSize = dataSize + 5;
fieldName = IptcFieldMap[segmentType];
fieldValue = getStringFromDB(dataView, segmentStartPos+5, dataSize);
// Check if we already stored a value with this name
if(data.hasOwnProperty(fieldName)) {
// Value already stored with this name, create multivalue field
if(data[fieldName] instanceof Array) {
data[fieldName].push(fieldValue);
}
else {
data[fieldName] = [data[fieldName], fieldValue];
}
}
else {
data[fieldName] = fieldValue;
}
}
}
segmentStartPos++;
}
return data;
}
function readTags(file, tiffStart, dirStart, strings, bigEnd) {
var entries = file.getUint16(dirStart, !bigEnd),
tags = {},
tags = {},
entryOffset, tag,
i;
for (i=0;i<entries;i++) {

@@ -438,3 +603,3 @@ entryOffset = dirStart + i*12 + 2;

vals = [];
for (var n=0;n<numValues;n++) {
for (n=0;n<numValues;n++) {
vals[n] = file.getUint32(valueOffset + 4*n, !bigEnd);

@@ -445,3 +610,3 @@ }

case 5: // rational = two long values, first is numerator, second is denominator
case 5: // rational = two long values, first is numerator, second is denominator
if (numValues == 1) {

@@ -490,10 +655,10 @@ numerator = file.getUint32(valueOffset, !bigEnd);

function getStringFromDB(buffer, start, length) {
var outstr = "";
for (n = start; n < start+length; n++) {
outstr += String.fromCharCode(buffer.getUint8(n));
}
return outstr;
}
function getStringFromDB(buffer, start, length) {
var outstr = "";
for (n = start; n < start+length; n++) {
outstr += String.fromCharCode(buffer.getUint8(n));
}
return outstr;
}
function readEXIFData(file, start) {

@@ -520,3 +685,3 @@ if (getStringFromDB(file, start, 4) != "Exif") {

if (file.getUint16(tiffOffset+2, !bigEnd) != 0x002A) {
if (file.getUint16(tiffOffset+2, !bigEnd) != 0x002A) {
if (debug) console.log("Not valid TIFF data! (no 0x002A)");

@@ -526,8 +691,10 @@ return false;

if (file.getUint32(tiffOffset+4, !bigEnd) != 0x00000008) {
if (debug) console.log("Not valid TIFF data! (First offset not 8)", file.getUint16(tiffOffset+4, !bigEnd));
var firstIFDOffset = file.getUint32(tiffOffset+4, !bigEnd);
if (firstIFDOffset < 0x00000008) {
if (debug) console.log("Not valid TIFF data! (First offset less than 8)", file.getUint32(tiffOffset+4, !bigEnd));
return false;
}
tags = readTags(file, tiffOffset, tiffOffset+8, TiffTags, bigEnd);
tags = readTags(file, tiffOffset, tiffOffset + firstIFDOffset, TiffTags, bigEnd);

@@ -546,7 +713,7 @@ if (tags.ExifIFDPointer) {

case "CustomRendered" :
case "WhiteBalance" :
case "GainControl" :
case "WhiteBalance" :
case "GainControl" :
case "Contrast" :
case "Saturation" :
case "Sharpness" :
case "Sharpness" :
case "SubjectDistanceRange" :

@@ -556,3 +723,3 @@ case "FileSource" :

break;
case "ExifVersion" :

@@ -562,9 +729,9 @@ case "FlashpixVersion" :

break;
case "ComponentsConfiguration" :
exifData[tag] =
StringValues.Components[exifData[tag][0]]
+ StringValues.Components[exifData[tag][1]]
+ StringValues.Components[exifData[tag][2]]
+ StringValues.Components[exifData[tag][3]];
case "ComponentsConfiguration" :
exifData[tag] =
StringValues.Components[exifData[tag][0]] +
StringValues.Components[exifData[tag][1]] +
StringValues.Components[exifData[tag][2]] +
StringValues.Components[exifData[tag][3]];
break;

@@ -580,7 +747,7 @@ }

switch (tag) {
case "GPSVersionID" :
gpsData[tag] = gpsData[tag][0]
+ "." + gpsData[tag][1]
+ "." + gpsData[tag][2]
+ "." + gpsData[tag][3];
case "GPSVersionID" :
gpsData[tag] = gpsData[tag][0] +
"." + gpsData[tag][1] +
"." + gpsData[tag][2] +
"." + gpsData[tag][3];
break;

@@ -595,5 +762,5 @@ }

EXIF.getData = function(img, callback) {
if ((img instanceof Image || img instanceof HTMLImageElement) && !img.complete) return false;
function getData(img, callback) {
if ((img instanceof Image || img instanceof HTMLImageElement) && !img.complete) return false;
if (!imageHasData(img)) {

@@ -609,3 +776,3 @@ getImageData(img, callback);

function getTag(img, tag) {
EXIF.getTag = function(img, tag) {
if (!imageHasData(img)) return;

@@ -615,5 +782,5 @@ return img.exifdata[tag];

function getAllTags(img) {
EXIF.getAllTags = function(img) {
if (!imageHasData(img)) return {};
var a,
var a,
data = img.exifdata,

@@ -629,3 +796,3 @@ tags = {};

function pretty(img) {
EXIF.pretty = function(img) {
if (!imageHasData(img)) return "";

@@ -651,22 +818,12 @@ var a,

function readFromBinaryFile(file) {
EXIF.readFromBinaryFile = function(file) {
return findEXIFinJPEG(file);
}
return {
readFromBinaryFile : readFromBinaryFile,
pretty : pretty,
getTag : getTag,
getAllTags : getAllTags,
getData : getData,
Tags : ExifTags,
TiffTags : TiffTags,
GPSTags : GPSTags,
StringValues : StringValues
};
if (typeof define === 'function' && define.amd) {
define('exif-js', [], function() {
return EXIF;
});
}
}.call(this));
})();
module.exports = EXIF;
{
"name": "exif-js",
"version": "1.0.7",
"description": "A JavaScript library for reading EXIF meta data from JPEG image files.",
"version": "2.0.0",
"description": "JavaScript library for reading EXIF image metadata",
"main": "exif.js",

@@ -9,25 +9,24 @@ "directories": {

},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "git://github.com/webthusiast/exif-js"
"url": "https://github.com/jseidelin/exif-js"
},
"homepage": "https://github.com/webthusiast/exif-js",
"keywords": [
"exif"
],
"author": "Jacob Seidelin",
"license": "MIT",
"bugs": {
"url": "https://github.com/jseidelin/exif-js/issues"
},
"keywords": [
"exif",
"binaryajax",
"nihilogic",
"browserify",
"commonjs"
],
"author": "Jacob Seidelin <jseidelin@nihilogic.dk> (http://blog.nihilogic.dk/)",
"maintainers": [
"Roald de Vries <roald@webthusiast.nl> (http://webthusiast.nl/)"
],
"license": "MIT"
"homepage": "https://github.com/jseidelin/exif-js",
"ignore": [
"**/.*",
"node_modules",
"bower_components",
"test",
"tests",
"spec",
"example"
]
}

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