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https://github.com/vbatts/freezing-octo-hipster.git
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309 lines
10 KiB
Go
309 lines
10 KiB
Go
package exif
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type FieldName string
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// UnknownPrefix is used as the first part of field names for decoded tags for
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// which there is no known/supported EXIF field.
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const UnknownPrefix = "UnknownTag_"
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// Primary EXIF fields
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const (
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ImageWidth FieldName = "ImageWidth"
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ImageLength FieldName = "ImageLength" // Image height called Length by EXIF spec
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BitsPerSample FieldName = "BitsPerSample"
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Compression FieldName = "Compression"
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PhotometricInterpretation FieldName = "PhotometricInterpretation"
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Orientation FieldName = "Orientation"
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SamplesPerPixel FieldName = "SamplesPerPixel"
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PlanarConfiguration FieldName = "PlanarConfiguration"
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YCbCrSubSampling FieldName = "YCbCrSubSampling"
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YCbCrPositioning FieldName = "YCbCrPositioning"
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XResolution FieldName = "XResolution"
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YResolution FieldName = "YResolution"
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ResolutionUnit FieldName = "ResolutionUnit"
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DateTime FieldName = "DateTime"
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ImageDescription FieldName = "ImageDescription"
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Make FieldName = "Make"
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Model FieldName = "Model"
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Software FieldName = "Software"
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Artist FieldName = "Artist"
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Copyright FieldName = "Copyright"
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ExifIFDPointer FieldName = "ExifIFDPointer"
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GPSInfoIFDPointer FieldName = "GPSInfoIFDPointer"
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InteroperabilityIFDPointer FieldName = "InteroperabilityIFDPointer"
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ExifVersion FieldName = "ExifVersion"
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FlashpixVersion FieldName = "FlashpixVersion"
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ColorSpace FieldName = "ColorSpace"
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ComponentsConfiguration FieldName = "ComponentsConfiguration"
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CompressedBitsPerPixel FieldName = "CompressedBitsPerPixel"
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PixelXDimension FieldName = "PixelXDimension"
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PixelYDimension FieldName = "PixelYDimension"
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MakerNote FieldName = "MakerNote"
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UserComment FieldName = "UserComment"
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RelatedSoundFile FieldName = "RelatedSoundFile"
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DateTimeOriginal FieldName = "DateTimeOriginal"
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DateTimeDigitized FieldName = "DateTimeDigitized"
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SubSecTime FieldName = "SubSecTime"
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SubSecTimeOriginal FieldName = "SubSecTimeOriginal"
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SubSecTimeDigitized FieldName = "SubSecTimeDigitized"
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ImageUniqueID FieldName = "ImageUniqueID"
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ExposureTime FieldName = "ExposureTime"
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FNumber FieldName = "FNumber"
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ExposureProgram FieldName = "ExposureProgram"
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SpectralSensitivity FieldName = "SpectralSensitivity"
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ISOSpeedRatings FieldName = "ISOSpeedRatings"
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OECF FieldName = "OECF"
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ShutterSpeedValue FieldName = "ShutterSpeedValue"
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ApertureValue FieldName = "ApertureValue"
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BrightnessValue FieldName = "BrightnessValue"
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ExposureBiasValue FieldName = "ExposureBiasValue"
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MaxApertureValue FieldName = "MaxApertureValue"
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SubjectDistance FieldName = "SubjectDistance"
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MeteringMode FieldName = "MeteringMode"
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LightSource FieldName = "LightSource"
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Flash FieldName = "Flash"
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FocalLength FieldName = "FocalLength"
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SubjectArea FieldName = "SubjectArea"
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FlashEnergy FieldName = "FlashEnergy"
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SpatialFrequencyResponse FieldName = "SpatialFrequencyResponse"
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FocalPlaneXResolution FieldName = "FocalPlaneXResolution"
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FocalPlaneYResolution FieldName = "FocalPlaneYResolution"
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FocalPlaneResolutionUnit FieldName = "FocalPlaneResolutionUnit"
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SubjectLocation FieldName = "SubjectLocation"
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ExposureIndex FieldName = "ExposureIndex"
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SensingMethod FieldName = "SensingMethod"
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FileSource FieldName = "FileSource"
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SceneType FieldName = "SceneType"
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CFAPattern FieldName = "CFAPattern"
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CustomRendered FieldName = "CustomRendered"
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ExposureMode FieldName = "ExposureMode"
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WhiteBalance FieldName = "WhiteBalance"
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DigitalZoomRatio FieldName = "DigitalZoomRatio"
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FocalLengthIn35mmFilm FieldName = "FocalLengthIn35mmFilm"
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SceneCaptureType FieldName = "SceneCaptureType"
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GainControl FieldName = "GainControl"
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Contrast FieldName = "Contrast"
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Saturation FieldName = "Saturation"
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Sharpness FieldName = "Sharpness"
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DeviceSettingDescription FieldName = "DeviceSettingDescription"
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SubjectDistanceRange FieldName = "SubjectDistanceRange"
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LensMake FieldName = "LensMake"
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LensModel FieldName = "LensModel"
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)
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// Windows-specific tags
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const (
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XPTitle FieldName = "XPTitle"
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XPComment FieldName = "XPComment"
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XPAuthor FieldName = "XPAuthor"
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XPKeywords FieldName = "XPKeywords"
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XPSubject FieldName = "XPSubject"
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)
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// thumbnail fields
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const (
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ThumbJPEGInterchangeFormat FieldName = "ThumbJPEGInterchangeFormat" // offset to thumb jpeg SOI
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ThumbJPEGInterchangeFormatLength FieldName = "ThumbJPEGInterchangeFormatLength" // byte length of thumb
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)
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// GPS fields
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const (
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GPSVersionID FieldName = "GPSVersionID"
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GPSLatitudeRef FieldName = "GPSLatitudeRef"
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GPSLatitude FieldName = "GPSLatitude"
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GPSLongitudeRef FieldName = "GPSLongitudeRef"
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GPSLongitude FieldName = "GPSLongitude"
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GPSAltitudeRef FieldName = "GPSAltitudeRef"
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GPSAltitude FieldName = "GPSAltitude"
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GPSTimeStamp FieldName = "GPSTimeStamp"
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GPSSatelites FieldName = "GPSSatelites"
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GPSStatus FieldName = "GPSStatus"
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GPSMeasureMode FieldName = "GPSMeasureMode"
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GPSDOP FieldName = "GPSDOP"
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GPSSpeedRef FieldName = "GPSSpeedRef"
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GPSSpeed FieldName = "GPSSpeed"
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GPSTrackRef FieldName = "GPSTrackRef"
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GPSTrack FieldName = "GPSTrack"
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GPSImgDirectionRef FieldName = "GPSImgDirectionRef"
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GPSImgDirection FieldName = "GPSImgDirection"
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GPSMapDatum FieldName = "GPSMapDatum"
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GPSDestLatitudeRef FieldName = "GPSDestLatitudeRef"
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GPSDestLatitude FieldName = "GPSDestLatitude"
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GPSDestLongitudeRef FieldName = "GPSDestLongitudeRef"
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GPSDestLongitude FieldName = "GPSDestLongitude"
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GPSDestBearingRef FieldName = "GPSDestBearingRef"
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GPSDestBearing FieldName = "GPSDestBearing"
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GPSDestDistanceRef FieldName = "GPSDestDistanceRef"
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GPSDestDistance FieldName = "GPSDestDistance"
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GPSProcessingMethod FieldName = "GPSProcessingMethod"
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GPSAreaInformation FieldName = "GPSAreaInformation"
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GPSDateStamp FieldName = "GPSDateStamp"
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GPSDifferential FieldName = "GPSDifferential"
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)
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// interoperability fields
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const (
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InteroperabilityIndex FieldName = "InteroperabilityIndex"
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)
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var exifFields = map[uint16]FieldName{
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/////////////////////////////////////
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////////// IFD 0 ////////////////////
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/////////////////////////////////////
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// image data structure for the thumbnail
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0x0100: ImageWidth,
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0x0101: ImageLength,
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0x0102: BitsPerSample,
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0x0103: Compression,
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0x0106: PhotometricInterpretation,
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0x0112: Orientation,
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0x0115: SamplesPerPixel,
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0x011C: PlanarConfiguration,
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0x0212: YCbCrSubSampling,
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0x0213: YCbCrPositioning,
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0x011A: XResolution,
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0x011B: YResolution,
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0x0128: ResolutionUnit,
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// Other tags
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0x0132: DateTime,
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0x010E: ImageDescription,
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0x010F: Make,
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0x0110: Model,
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0x0131: Software,
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0x013B: Artist,
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0x8298: Copyright,
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// Windows-specific tags
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0x9c9b: XPTitle,
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0x9c9c: XPComment,
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0x9c9d: XPAuthor,
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0x9c9e: XPKeywords,
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0x9c9f: XPSubject,
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// private tags
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exifPointer: ExifIFDPointer,
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/////////////////////////////////////
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////////// Exif sub IFD /////////////
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/////////////////////////////////////
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gpsPointer: GPSInfoIFDPointer,
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interopPointer: InteroperabilityIFDPointer,
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0x9000: ExifVersion,
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0xA000: FlashpixVersion,
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0xA001: ColorSpace,
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0x9101: ComponentsConfiguration,
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0x9102: CompressedBitsPerPixel,
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0xA002: PixelXDimension,
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0xA003: PixelYDimension,
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0x927C: MakerNote,
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0x9286: UserComment,
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0xA004: RelatedSoundFile,
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0x9003: DateTimeOriginal,
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0x9004: DateTimeDigitized,
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0x9290: SubSecTime,
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0x9291: SubSecTimeOriginal,
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0x9292: SubSecTimeDigitized,
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0xA420: ImageUniqueID,
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// picture conditions
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0x829A: ExposureTime,
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0x829D: FNumber,
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0x8822: ExposureProgram,
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0x8824: SpectralSensitivity,
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0x8827: ISOSpeedRatings,
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0x8828: OECF,
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0x9201: ShutterSpeedValue,
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0x9202: ApertureValue,
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0x9203: BrightnessValue,
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0x9204: ExposureBiasValue,
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0x9205: MaxApertureValue,
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0x9206: SubjectDistance,
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0x9207: MeteringMode,
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0x9208: LightSource,
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0x9209: Flash,
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0x920A: FocalLength,
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0x9214: SubjectArea,
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0xA20B: FlashEnergy,
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0xA20C: SpatialFrequencyResponse,
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0xA20E: FocalPlaneXResolution,
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0xA20F: FocalPlaneYResolution,
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0xA210: FocalPlaneResolutionUnit,
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0xA214: SubjectLocation,
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0xA215: ExposureIndex,
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0xA217: SensingMethod,
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0xA300: FileSource,
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0xA301: SceneType,
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0xA302: CFAPattern,
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0xA401: CustomRendered,
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0xA402: ExposureMode,
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0xA403: WhiteBalance,
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0xA404: DigitalZoomRatio,
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0xA405: FocalLengthIn35mmFilm,
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0xA406: SceneCaptureType,
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0xA407: GainControl,
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0xA408: Contrast,
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0xA409: Saturation,
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0xA40A: Sharpness,
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0xA40B: DeviceSettingDescription,
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0xA40C: SubjectDistanceRange,
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0xA433: LensMake,
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0xA434: LensModel,
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}
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var gpsFields = map[uint16]FieldName{
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/////////////////////////////////////
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//// GPS sub-IFD ////////////////////
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/////////////////////////////////////
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0x0: GPSVersionID,
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0x1: GPSLatitudeRef,
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0x2: GPSLatitude,
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0x3: GPSLongitudeRef,
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0x4: GPSLongitude,
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0x5: GPSAltitudeRef,
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0x6: GPSAltitude,
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0x7: GPSTimeStamp,
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0x8: GPSSatelites,
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0x9: GPSStatus,
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0xA: GPSMeasureMode,
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0xB: GPSDOP,
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0xC: GPSSpeedRef,
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0xD: GPSSpeed,
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0xE: GPSTrackRef,
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0xF: GPSTrack,
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0x10: GPSImgDirectionRef,
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0x11: GPSImgDirection,
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0x12: GPSMapDatum,
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0x13: GPSDestLatitudeRef,
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0x14: GPSDestLatitude,
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0x15: GPSDestLongitudeRef,
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0x16: GPSDestLongitude,
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0x17: GPSDestBearingRef,
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0x18: GPSDestBearing,
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0x19: GPSDestDistanceRef,
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0x1A: GPSDestDistance,
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0x1B: GPSProcessingMethod,
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0x1C: GPSAreaInformation,
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0x1D: GPSDateStamp,
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0x1E: GPSDifferential,
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}
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var interopFields = map[uint16]FieldName{
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/////////////////////////////////////
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//// Interoperability sub-IFD ///////
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/////////////////////////////////////
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0x1: InteroperabilityIndex,
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}
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var thumbnailFields = map[uint16]FieldName{
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0x0201: ThumbJPEGInterchangeFormat,
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0x0202: ThumbJPEGInterchangeFormatLength,
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}
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