module Graphics.ExifTags where
import Data.Word
import Text.Printf (printf)
import qualified Data.Map as Map
import Data.Map (Map)
import Graphics.Types
import Graphics.PrettyPrinters
exifSubIfdTag :: String -> Word16 -> (ExifValue -> String)-> ExifTag
exifSubIfdTag d = ExifTag ExifSubIFD (Just d)
exifIfd0Tag :: String -> Word16 -> (ExifValue -> String) -> ExifTag
exifIfd0Tag d = ExifTag IFD0 (Just d)
exifGpsTag :: String -> Word16 -> (ExifValue -> String) -> ExifTag
exifGpsTag d = ExifTag GpsSubIFD (Just d)
withFormat :: String -> ExifValue -> String
withFormat fmt = printf fmt . show
asFpWithFormat :: String -> ExifValue -> String
asFpWithFormat fmt = printf fmt . formatAsFloatingPoint 2
exposureTime = exifSubIfdTag "exposureTime" 0x829a $ withFormat "%s sec."
fnumber = exifSubIfdTag "fnumber" 0x829d $ withFormat "f/%s"
exposureProgram = exifSubIfdTag "exposureProgram" 0x8822 ppExposureProgram
spectralSensitivity = exifSubIfdTag "spectralSensitivity" 0x8824 show
isoSpeedRatings = exifSubIfdTag "isoSpeedRatings" 0x8827 show
oecf = exifSubIfdTag "OECF" 0x8828 show
exifVersion = exifSubIfdTag "exifVersion" 0x9000 ppExifVersion
dateTimeOriginal = exifSubIfdTag "dateTimeOriginal" 0x9003 show
dateTimeDigitized = exifSubIfdTag "dateTimeDigitized" 0x9004 show
componentConfiguration = exifSubIfdTag "componentConfiguration" 0x9101 ppComponentConfiguration
compressedBitsPerPixel = exifSubIfdTag "compressedBitsPerPixel" 0x9102 (formatAsFloatingPoint 2)
shutterSpeedValue = exifSubIfdTag "shutterSpeedValue" 0x9201 $ withFormat "%s sec."
apertureValue = exifSubIfdTag "apertureValue" 0x9202 show
brightnessValue = exifSubIfdTag "brightnessValue" 0x9203 show
exposureBiasValue = exifSubIfdTag "exposureBiasValue" 0x9204 $ asFpWithFormat "%s EV"
maxApertureValue = exifSubIfdTag "maxApertureValue" 0x9205 $ withFormat "f/%s"
subjectDistance = exifSubIfdTag "subjectDistance" 0x9206 show
meteringMode = exifSubIfdTag "meteringMode" 0x9207 ppMeteringMode
lightSource = exifSubIfdTag "lightSource" 0x9208 ppLightSource
flash = exifSubIfdTag "flash" 0x9209 ppFlash
focalLength = exifSubIfdTag "focalLength" 0x920a $ asFpWithFormat "%s mm"
subjectArea = exifSubIfdTag "subjectArea" 0x9214 show
makerNote = exifSubIfdTag "makerNote" 0x927c show
userComment = exifSubIfdTag "userComment" 0x9286 show
subSecTime = exifSubIfdTag "subSecTime" 0x9290 show
subSecTimeOriginal = exifSubIfdTag "subSecTimeOriginal" 0x9291 show
subSecTimeDigitized = exifSubIfdTag "subSecTimeDigitized" 0x9292 show
flashPixVersion = exifSubIfdTag "flashPixVersion" 0xa000 ppFlashPixVersion
colorSpace = exifSubIfdTag "colorSpace" 0xa001 ppColorSpace
exifImageWidth = exifSubIfdTag "exifImageWidth" 0xa002 show
exifImageHeight = exifSubIfdTag "exifImageHeight" 0xa003 show
relatedSoundFile = exifSubIfdTag "relatedSoundFile" 0xa004 show
flashEnergy = exifSubIfdTag "flashEnergy" 0xa20b show
spatialFrequencyResponse= exifSubIfdTag "spatialFrequencyResponse" 0xa20c show
focalPlaneXResolution = exifSubIfdTag "focalPlaneXResolution" 0xa20e show
focalPlaneYResolution = exifSubIfdTag "focalPlaneYResolution" 0xa20f show
focalPlaneResolutionUnit= exifSubIfdTag "focalPlaneResolutionUnit" 0xa210 ppFocalPlaneResolutionUnit
subjectLocation = exifSubIfdTag "subjectLocation" 0xa214 show
exposureIndex = exifSubIfdTag "exposureIndex" 0xa215 show
sensingMethod = exifSubIfdTag "sensingMethod" 0xa217 ppSensingMethod
fileSource = exifSubIfdTag "fileSource" 0xa300 show
sceneType = exifSubIfdTag "sceneType" 0xa301 ppSceneType
cfaPattern = exifSubIfdTag "cfaPattern" 0xa302 show
customRendered = exifSubIfdTag "customRendered" 0xa401 ppCustomRendered
exposureMode = exifSubIfdTag "exposureMode" 0xa402 ppExposureMode
whiteBalance = exifSubIfdTag "whiteBalance" 0xa403 ppWhiteBalance
digitalZoomRatio = exifSubIfdTag "digitalZoomRatio" 0xa404 show
focalLengthIn35mmFilm = exifSubIfdTag "focalLengthIn35mmFilm" 0xa405 $ asFpWithFormat "%s mm"
sceneCaptureType = exifSubIfdTag "sceneCaptureType" 0xa406 ppSceneCaptureType
gainControl = exifSubIfdTag "gainControl" 0xa407 ppGainControl
contrast = exifSubIfdTag "contrast" 0xa408 ppContrastSharpness
saturation = exifSubIfdTag "saturation" 0xa409 ppSaturation
sharpness = exifSubIfdTag "sharpness" 0xa40a ppContrastSharpness
deviceSettingDescription= exifSubIfdTag "deviceSettingDescription" 0xa40b show
subjectDistanceRange = exifSubIfdTag "subjectDistanceRange" 0xa40c ppSubjectDistanceRange
imageUniqueId = exifSubIfdTag "imageUniqueId" 0xa420 show
exifInteroperabilityOffset=exifSubIfdTag "exifInteroperabilityOffset" 0xa005 show
imageDescription = exifIfd0Tag "imageDescription" 0x010e show
make = exifIfd0Tag "make" 0x010f show
model = exifIfd0Tag "model" 0x0110 show
orientation = exifIfd0Tag "orientation" 0x0112 ppOrientation
xResolution = exifIfd0Tag "xResolution" 0x011a show
yResolution = exifIfd0Tag "xResolution" 0x011b show
resolutionUnit = exifIfd0Tag "resolutionUnit" 0x0128 ppResolutionUnit
software = exifIfd0Tag "software" 0x0131 show
dateTime = exifIfd0Tag "dateTime" 0x0132 show
artist = exifIfd0Tag "artist" 0x013b show
whitePoint = exifIfd0Tag "whitePoint" 0x013e show
primaryChromaticities = exifIfd0Tag "primaryChromaticities" 0x013f show
yCbCrCoefficients = exifIfd0Tag "yCbCrCoefficients" 0x0211 show
yCbCrPositioning = exifIfd0Tag "yCbCrPositioning" 0x0213 ppYCbCrPositioning
referenceBlackWhite = exifIfd0Tag "referenceBlackWhite" 0x0214 show
copyright = exifIfd0Tag "copyright" 0x8298 show
exifIfdOffset = exifIfd0Tag "exifIfdOffset" 0x8769 show
gpsTagOffset = exifIfd0Tag "gpsTagOffset" 0x8825 show
printImageMatching = exifIfd0Tag "printImageMatching" 0xc4a5 show
gpsVersionID = exifGpsTag "gpsVersionID" 0x0000 show
gpsLatitudeRef = exifGpsTag "gpsLatitudeRef" 0x0001 show
gpsLatitude = exifGpsTag "gpsLatitude" 0x0002 ppGpsLongLat
gpsLongitudeRef = exifGpsTag "gpsLongitudeRef" 0x0003 show
gpsLongitude = exifGpsTag "gpsLongitude" 0x0004 ppGpsLongLat
gpsAltitudeRef = exifGpsTag "gpsAltitudeRef" 0x0005 ppGpsAltitudeRef
gpsAltitude = exifGpsTag "gpsAltitude" 0x0006 show
gpsTimeStamp = exifGpsTag "gpsTimeStamp" 0x0007 show
gpsSatellites = exifGpsTag "gpsSatellites" 0x0008 show
gpsStatus = exifGpsTag "gpsStatus" 0x0009 show
gpsMeasureMode = exifGpsTag "gpsMeasureMode" 0x000a show
gpsDop = exifGpsTag "gpsDop" 0x000b show
gpsSpeedRef = exifGpsTag "gpsSpeedRef" 0x000c show
gpsSpeed = exifGpsTag "gpsSpeed" 0x000d show
gpsTrackRef = exifGpsTag "gpsTrackRef" 0x000e show
gpsTrack = exifGpsTag "gpsTrack" 0x000f show
gpsImgDirectionRef = exifGpsTag "gpsImgDirectionRef" 0x0010 show
gpsImgDirection = exifGpsTag "gpsImgDirection" 0x0011 show
gpsMapDatum = exifGpsTag "gpsMapDatum" 0x0012 show
gpsDestLatitudeRef = exifGpsTag "gpsDestLatitudeRef" 0x0013 show
gpsDestLatitude = exifGpsTag "gpsDestLatitude" 0x0014 show
gpsDestLongitudeRef = exifGpsTag "gpsDestLongitudeRef" 0x0015 show
gpsDestLongitude = exifGpsTag "gpsDestLongitude" 0x0016 show
gpsDestBearingRef = exifGpsTag "gpsDestBearingRef" 0x0017 show
gpsDestBearing = exifGpsTag "gpsDestBearing" 0x0018 show
gpsDestDistanceRef = exifGpsTag "gpsDestDistanceRef" 0x0019 show
gpsDestDistance = exifGpsTag "gpsDestDistance" 0x001a show
gpsProcessingMethod = exifGpsTag "gpsProcessingMethod" 0x001b show
gpsAreaInformation = exifGpsTag "gpsAreaInformation" 0x001c show
gpsDateStamp = exifGpsTag "gpsDateStamp" 0x001d show
gpsDifferential = exifGpsTag "gpsDifferential" 0x001e show
allExifTags :: [ExifTag]
allExifTags = [exposureTime, fnumber, exposureProgram, isoSpeedRatings,
exifVersion, dateTimeOriginal, dateTimeDigitized, componentConfiguration,
compressedBitsPerPixel, shutterSpeedValue, apertureValue, brightnessValue,
exposureBiasValue, maxApertureValue, subjectDistance, meteringMode,
lightSource, flash, focalLength, makerNote, userComment,
exifImageWidth, exifImageHeight, relatedSoundFile, focalPlaneXResolution,
focalPlaneYResolution, focalPlaneResolutionUnit, sensingMethod, fileSource,
sceneType, orientation, make, model, software, copyright,
spectralSensitivity, oecf, subjectArea, subSecTime, subSecTimeOriginal,
subSecTimeDigitized, flashPixVersion, colorSpace, flashEnergy,
spatialFrequencyResponse, subjectLocation, exposureIndex, cfaPattern,
customRendered, exposureMode, whiteBalance, digitalZoomRatio,
focalLengthIn35mmFilm, sceneCaptureType, gainControl, contrast,
saturation, sharpness, deviceSettingDescription, subjectDistanceRange,
imageUniqueId, exifInteroperabilityOffset, imageDescription,
xResolution, yResolution, resolutionUnit, dateTime, whitePoint,
primaryChromaticities, yCbCrPositioning, yCbCrCoefficients, referenceBlackWhite,
exifIfdOffset, printImageMatching, gpsTagOffset, artist,
gpsVersionID, gpsLatitudeRef, gpsLatitude, gpsLongitudeRef, gpsLongitude,
gpsAltitudeRef, gpsAltitude, gpsTimeStamp, gpsSatellites, gpsStatus,
gpsMeasureMode, gpsDop, gpsSpeedRef, gpsSpeed, gpsTrackRef, gpsTrack,
gpsImgDirectionRef, gpsImgDirection, gpsMapDatum, gpsDestLatitudeRef,
gpsDestLatitude, gpsDestLongitudeRef, gpsDestLongitude, gpsDestBearingRef,
gpsDestBearing, gpsDestDistanceRef, gpsDestDistance, gpsProcessingMethod,
gpsAreaInformation, gpsDateStamp, gpsDifferential]
getGpsLatitudeLongitude :: Map ExifTag ExifValue -> Maybe (Double, Double)
getGpsLatitudeLongitude exifData = do
(ExifText latRef) <- Map.lookup gpsLatitudeRef exifData
latDec <- Map.lookup gpsLatitude exifData >>= gpsDecodeToDecimalDegrees
let signedLatDec = case latRef of
"S" -> latDec
_ -> latDec
(ExifText longRef) <- Map.lookup gpsLongitudeRef exifData
longDec <- Map.lookup gpsLongitude exifData >>= gpsDecodeToDecimalDegrees
let signedLongDec = case longRef of
"W" -> longDec
_ -> longDec
return (signedLatDec, signedLongDec)
gpsDecodeToDecimalDegrees :: ExifValue -> Maybe Double
gpsDecodeToDecimalDegrees (ExifRationalList intPairs) = case fmap intPairToFloating intPairs of
(degrees:minutes:seconds:[]) -> Just $ degrees + minutes / 60 + seconds / 3600
_ -> Nothing
where
intPairToFloating (n, d) = fromIntegral n / fromIntegral d
gpsDecodeToDecimalDegrees _ = Nothing
ppGpsLongLat :: ExifValue -> String
ppGpsLongLat v = maybe "invalid GPS data" fmt $ gpsDecodeToDecimalDegrees v
where fmt = printf "%.6f"