/*
 * JavaScript Load Image Exif Map
 * https://github.com/blueimp/JavaScript-Load-Image
 *
 * Copyright 2013, Sebastian Tschan
 * https://blueimp.net
 *
 * Exif tags mapping based on
 * https://github.com/jseidelin/exif-js
 *
 * Licensed under the MIT license:
 * http://www.opensource.org/licenses/MIT
 */

/*global define, module, require, window */

;(function (factory) {
  'use strict'
  if (typeof define === 'function' && define.amd) {
    // Register as an anonymous AMD module:
    define(['./load-image', './load-image-exif'], factory)
  } else if (typeof module === 'object' && module.exports) {
    factory(require('./load-image'), require('./load-image-exif'))
  } else {
    // Browser globals:
    factory(window.loadImage)
  }
}(function (loadImage) {
  'use strict'

  loadImage.ExifMap.prototype.tags = {
    // =================
    // TIFF tags (IFD0):
    // =================
    0x0100: 'ImageWidth',
    0x0101: 'ImageHeight',
    0x8769: 'ExifIFDPointer',
    0x8825: 'GPSInfoIFDPointer',
    0xA005: 'InteroperabilityIFDPointer',
    0x0102: 'BitsPerSample',
    0x0103: 'Compression',
    0x0106: 'PhotometricInterpretation',
    0x0112: 'Orientation',
    0x0115: 'SamplesPerPixel',
    0x011C: 'PlanarConfiguration',
    0x0212: 'YCbCrSubSampling',
    0x0213: 'YCbCrPositioning',
    0x011A: 'XResolution',
    0x011B: 'YResolution',
    0x0128: 'ResolutionUnit',
    0x0111: 'StripOffsets',
    0x0116: 'RowsPerStrip',
    0x0117: 'StripByteCounts',
    0x0201: 'JPEGInterchangeFormat',
    0x0202: 'JPEGInterchangeFormatLength',
    0x012D: 'TransferFunction',
    0x013E: 'WhitePoint',
    0x013F: 'PrimaryChromaticities',
    0x0211: 'YCbCrCoefficients',
    0x0214: 'ReferenceBlackWhite',
    0x0132: 'DateTime',
    0x010E: 'ImageDescription',
    0x010F: 'Make',
    0x0110: 'Model',
    0x0131: 'Software',
    0x013B: 'Artist',
    0x8298: 'Copyright',
    // ==================
    // Exif Sub IFD tags:
    // ==================
    0x9000: 'ExifVersion', // EXIF version
    0xA000: 'FlashpixVersion', // Flashpix format version
    0xA001: 'ColorSpace', // Color space information tag
    0xA002: 'PixelXDimension', // Valid width of meaningful image
    0xA003: 'PixelYDimension', // Valid height of meaningful image
    0xA500: 'Gamma',
    0x9101: 'ComponentsConfiguration', // Information about channels
    0x9102: 'CompressedBitsPerPixel', // Compressed bits per pixel
    0x927C: 'MakerNote', // Any desired information written by the manufacturer
    0x9286: 'UserComment', // Comments by user
    0xA004: 'RelatedSoundFile', // Name of related sound file
    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
    0x829A: 'ExposureTime', // Exposure time (in seconds)
    0x829D: 'FNumber',
    0x8822: 'ExposureProgram', // Exposure program
    0x8824: 'SpectralSensitivity', // Spectral sensitivity
    0x8827: 'PhotographicSensitivity', // EXIF 2.3, ISOSpeedRatings in EXIF 2.2
    0x8828: 'OECF', // Optoelectric conversion factor
    0x8830: 'SensitivityType',
    0x8831: 'StandardOutputSensitivity',
    0x8832: 'RecommendedExposureIndex',
    0x8833: 'ISOSpeed',
    0x8834: 'ISOSpeedLatitudeyyy',
    0x8835: 'ISOSpeedLatitudezzz',
    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 FPRUnit
    0xA20F: 'FocalPlaneYResolution', // Number of pixels in height direction per FPRUnit
    0xA210: 'FocalPlaneResolutionUnit', // Unit for measuring the focal plane resolution
    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: 'DigitalZoomRatio', // Digital zoom ratio
    0xA405: 'FocalLengthIn35mmFilm',
    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
    0xA420: 'ImageUniqueID', // Identifier assigned uniquely to each image
    0xA430: 'CameraOwnerName',
    0xA431: 'BodySerialNumber',
    0xA432: 'LensSpecification',
    0xA433: 'LensMake',
    0xA434: 'LensModel',
    0xA435: 'LensSerialNumber',
    // ==============
    // GPS Info tags:
    // ==============
    0x0000: 'GPSVersionID',
    0x0001: 'GPSLatitudeRef',
    0x0002: 'GPSLatitude',
    0x0003: 'GPSLongitudeRef',
    0x0004: 'GPSLongitude',
    0x0005: 'GPSAltitudeRef',
    0x0006: 'GPSAltitude',
    0x0007: 'GPSTimeStamp',
    0x0008: 'GPSSatellites',
    0x0009: 'GPSStatus',
    0x000A: 'GPSMeasureMode',
    0x000B: 'GPSDOP',
    0x000C: 'GPSSpeedRef',
    0x000D: 'GPSSpeed',
    0x000E: 'GPSTrackRef',
    0x000F: 'GPSTrack',
    0x0010: 'GPSImgDirectionRef',
    0x0011: 'GPSImgDirection',
    0x0012: 'GPSMapDatum',
    0x0013: 'GPSDestLatitudeRef',
    0x0014: 'GPSDestLatitude',
    0x0015: 'GPSDestLongitudeRef',
    0x0016: 'GPSDestLongitude',
    0x0017: 'GPSDestBearingRef',
    0x0018: 'GPSDestBearing',
    0x0019: 'GPSDestDistanceRef',
    0x001A: 'GPSDestDistance',
    0x001B: 'GPSProcessingMethod',
    0x001C: 'GPSAreaInformation',
    0x001D: 'GPSDateStamp',
    0x001E: 'GPSDifferential',
    0x001F: 'GPSHPositioningError'
  }

  loadImage.ExifMap.prototype.stringValues = {
    ExposureProgram: {
      0: 'Undefined',
      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: {
      0x0000: 'Flash did not fire',
      0x0001: 'Flash fired',
      0x0005: 'Strobe return light not detected',
      0x0007: 'Strobe return light detected',
      0x0009: 'Flash fired, compulsory flash mode',
      0x000D: 'Flash fired, compulsory flash mode, return light not detected',
      0x000F: 'Flash fired, compulsory flash mode, return light detected',
      0x0010: 'Flash did not fire, compulsory flash mode',
      0x0018: 'Flash did not fire, auto mode',
      0x0019: 'Flash fired, auto mode',
      0x001D: 'Flash fired, auto mode, return light not detected',
      0x001F: 'Flash fired, auto mode, return light detected',
      0x0020: 'No flash function',
      0x0041: 'Flash fired, red-eye reduction mode',
      0x0045: 'Flash fired, red-eye reduction mode, return light not detected',
      0x0047: 'Flash fired, red-eye reduction mode, return light detected',
      0x0049: 'Flash fired, compulsory flash mode, red-eye reduction mode',
      0x004D: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected',
      0x004F: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light detected',
      0x0059: 'Flash fired, auto mode, red-eye reduction mode',
      0x005D: 'Flash fired, auto mode, return light not detected, red-eye reduction mode',
      0x005F: 'Flash fired, auto mode, return light detected, red-eye reduction mode'
    },
    SensingMethod: {
      1: 'Undefined',
      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'
    },
    ComponentsConfiguration: {
      0: '',
      1: 'Y',
      2: 'Cb',
      3: 'Cr',
      4: 'R',
      5: 'G',
      6: 'B'
    },
    Orientation: {
      1: 'top-left',
      2: 'top-right',
      3: 'bottom-right',
      4: 'bottom-left',
      5: 'left-top',
      6: 'right-top',
      7: 'right-bottom',
      8: 'left-bottom'
    }
  }

  loadImage.ExifMap.prototype.getText = function (id) {
    var value = this.get(id)
    switch (id) {
      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':
      case 'Orientation':
        return this.stringValues[id][value]
      case 'ExifVersion':
      case 'FlashpixVersion':
        return String.fromCharCode(value[0], value[1], value[2], value[3])
      case 'ComponentsConfiguration':
        return this.stringValues[id][value[0]] +
        this.stringValues[id][value[1]] +
        this.stringValues[id][value[2]] +
        this.stringValues[id][value[3]]
      case 'GPSVersionID':
        return value[0] + '.' + value[1] + '.' + value[2] + '.' + value[3]
    }
    return String(value)
  }

  ;(function (exifMapPrototype) {
    var tags = exifMapPrototype.tags
    var map = exifMapPrototype.map
    var prop
    // Map the tag names to tags:
    for (prop in tags) {
      if (tags.hasOwnProperty(prop)) {
        map[tags[prop]] = prop
      }
    }
  }(loadImage.ExifMap.prototype))

  loadImage.ExifMap.prototype.getAll = function () {
    var map = {}
    var prop
    var id
    for (prop in this) {
      if (this.hasOwnProperty(prop)) {
        id = this.tags[prop]
        if (id) {
          map[id] = this.getText(id)
        }
      }
    }
    return map
  }
}))