561 lines
16 KiB
Python
561 lines
16 KiB
Python
#
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# The Python Imaging Library.
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# $Id$
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#
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# TIFF tags
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#
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# This module provides clear-text names for various well-known
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# TIFF tags. the TIFF codec works just fine without it.
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#
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# Copyright (c) Secret Labs AB 1999.
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#
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# See the README file for information on usage and redistribution.
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#
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##
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# This module provides constants and clear-text names for various
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# well-known TIFF tags.
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##
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from collections import namedtuple
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class TagInfo(namedtuple("_TagInfo", "value name type length enum")):
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__slots__ = []
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def __new__(cls, value=None, name="unknown", type=None, length=None, enum=None):
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return super().__new__(cls, value, name, type, length, enum or {})
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def cvt_enum(self, value):
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# Using get will call hash(value), which can be expensive
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# for some types (e.g. Fraction). Since self.enum is rarely
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# used, it's usually better to test it first.
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return self.enum.get(value, value) if self.enum else value
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def lookup(tag, group=None):
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"""
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:param tag: Integer tag number
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:param group: Which :py:data:`~PIL.TiffTags.TAGS_V2_GROUPS` to look in
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.. versionadded:: 8.3.0
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:returns: Taginfo namedtuple, From the ``TAGS_V2`` info if possible,
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otherwise just populating the value and name from ``TAGS``.
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If the tag is not recognized, "unknown" is returned for the name
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"""
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if group is not None:
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info = TAGS_V2_GROUPS[group].get(tag) if group in TAGS_V2_GROUPS else None
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else:
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info = TAGS_V2.get(tag)
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return info or TagInfo(tag, TAGS.get(tag, "unknown"))
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##
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# Map tag numbers to tag info.
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#
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# id: (Name, Type, Length, enum_values)
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#
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# The length here differs from the length in the tiff spec. For
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# numbers, the tiff spec is for the number of fields returned. We
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# agree here. For string-like types, the tiff spec uses the length of
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# field in bytes. In Pillow, we are using the number of expected
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# fields, in general 1 for string-like types.
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BYTE = 1
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ASCII = 2
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SHORT = 3
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LONG = 4
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RATIONAL = 5
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SIGNED_BYTE = 6
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UNDEFINED = 7
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SIGNED_SHORT = 8
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SIGNED_LONG = 9
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SIGNED_RATIONAL = 10
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FLOAT = 11
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DOUBLE = 12
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IFD = 13
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LONG8 = 16
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TAGS_V2 = {
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254: ("NewSubfileType", LONG, 1),
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255: ("SubfileType", SHORT, 1),
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256: ("ImageWidth", LONG, 1),
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257: ("ImageLength", LONG, 1),
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258: ("BitsPerSample", SHORT, 0),
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259: (
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"Compression",
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SHORT,
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1,
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{
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"Uncompressed": 1,
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"CCITT 1d": 2,
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"Group 3 Fax": 3,
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"Group 4 Fax": 4,
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"LZW": 5,
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"JPEG": 6,
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"PackBits": 32773,
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},
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),
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262: (
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"PhotometricInterpretation",
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SHORT,
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1,
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{
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"WhiteIsZero": 0,
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"BlackIsZero": 1,
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"RGB": 2,
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"RGB Palette": 3,
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"Transparency Mask": 4,
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"CMYK": 5,
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"YCbCr": 6,
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"CieLAB": 8,
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"CFA": 32803, # TIFF/EP, Adobe DNG
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"LinearRaw": 32892, # Adobe DNG
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},
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),
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263: ("Threshholding", SHORT, 1),
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264: ("CellWidth", SHORT, 1),
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265: ("CellLength", SHORT, 1),
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266: ("FillOrder", SHORT, 1),
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269: ("DocumentName", ASCII, 1),
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270: ("ImageDescription", ASCII, 1),
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271: ("Make", ASCII, 1),
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272: ("Model", ASCII, 1),
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273: ("StripOffsets", LONG, 0),
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274: ("Orientation", SHORT, 1),
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277: ("SamplesPerPixel", SHORT, 1),
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278: ("RowsPerStrip", LONG, 1),
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279: ("StripByteCounts", LONG, 0),
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280: ("MinSampleValue", SHORT, 0),
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281: ("MaxSampleValue", SHORT, 0),
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282: ("XResolution", RATIONAL, 1),
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283: ("YResolution", RATIONAL, 1),
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284: ("PlanarConfiguration", SHORT, 1, {"Contiguous": 1, "Separate": 2}),
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285: ("PageName", ASCII, 1),
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286: ("XPosition", RATIONAL, 1),
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287: ("YPosition", RATIONAL, 1),
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288: ("FreeOffsets", LONG, 1),
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289: ("FreeByteCounts", LONG, 1),
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290: ("GrayResponseUnit", SHORT, 1),
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291: ("GrayResponseCurve", SHORT, 0),
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292: ("T4Options", LONG, 1),
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293: ("T6Options", LONG, 1),
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296: ("ResolutionUnit", SHORT, 1, {"none": 1, "inch": 2, "cm": 3}),
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297: ("PageNumber", SHORT, 2),
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301: ("TransferFunction", SHORT, 0),
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305: ("Software", ASCII, 1),
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306: ("DateTime", ASCII, 1),
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315: ("Artist", ASCII, 1),
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316: ("HostComputer", ASCII, 1),
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317: ("Predictor", SHORT, 1, {"none": 1, "Horizontal Differencing": 2}),
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318: ("WhitePoint", RATIONAL, 2),
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319: ("PrimaryChromaticities", RATIONAL, 6),
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320: ("ColorMap", SHORT, 0),
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321: ("HalftoneHints", SHORT, 2),
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322: ("TileWidth", LONG, 1),
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323: ("TileLength", LONG, 1),
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324: ("TileOffsets", LONG, 0),
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325: ("TileByteCounts", LONG, 0),
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330: ("SubIFDs", LONG, 0),
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332: ("InkSet", SHORT, 1),
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333: ("InkNames", ASCII, 1),
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334: ("NumberOfInks", SHORT, 1),
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336: ("DotRange", SHORT, 0),
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337: ("TargetPrinter", ASCII, 1),
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338: ("ExtraSamples", SHORT, 0),
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339: ("SampleFormat", SHORT, 0),
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340: ("SMinSampleValue", DOUBLE, 0),
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341: ("SMaxSampleValue", DOUBLE, 0),
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342: ("TransferRange", SHORT, 6),
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347: ("JPEGTables", UNDEFINED, 1),
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# obsolete JPEG tags
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512: ("JPEGProc", SHORT, 1),
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513: ("JPEGInterchangeFormat", LONG, 1),
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514: ("JPEGInterchangeFormatLength", LONG, 1),
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515: ("JPEGRestartInterval", SHORT, 1),
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517: ("JPEGLosslessPredictors", SHORT, 0),
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518: ("JPEGPointTransforms", SHORT, 0),
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519: ("JPEGQTables", LONG, 0),
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520: ("JPEGDCTables", LONG, 0),
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521: ("JPEGACTables", LONG, 0),
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529: ("YCbCrCoefficients", RATIONAL, 3),
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530: ("YCbCrSubSampling", SHORT, 2),
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531: ("YCbCrPositioning", SHORT, 1),
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532: ("ReferenceBlackWhite", RATIONAL, 6),
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700: ("XMP", BYTE, 0),
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33432: ("Copyright", ASCII, 1),
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33723: ("IptcNaaInfo", UNDEFINED, 1),
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34377: ("PhotoshopInfo", BYTE, 0),
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# FIXME add more tags here
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34665: ("ExifIFD", LONG, 1),
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34675: ("ICCProfile", UNDEFINED, 1),
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34853: ("GPSInfoIFD", LONG, 1),
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36864: ("ExifVersion", UNDEFINED, 1),
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37724: ("ImageSourceData", UNDEFINED, 1),
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40965: ("InteroperabilityIFD", LONG, 1),
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41730: ("CFAPattern", UNDEFINED, 1),
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# MPInfo
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45056: ("MPFVersion", UNDEFINED, 1),
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45057: ("NumberOfImages", LONG, 1),
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45058: ("MPEntry", UNDEFINED, 1),
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45059: ("ImageUIDList", UNDEFINED, 0), # UNDONE, check
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45060: ("TotalFrames", LONG, 1),
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45313: ("MPIndividualNum", LONG, 1),
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45569: ("PanOrientation", LONG, 1),
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45570: ("PanOverlap_H", RATIONAL, 1),
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45571: ("PanOverlap_V", RATIONAL, 1),
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45572: ("BaseViewpointNum", LONG, 1),
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45573: ("ConvergenceAngle", SIGNED_RATIONAL, 1),
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45574: ("BaselineLength", RATIONAL, 1),
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45575: ("VerticalDivergence", SIGNED_RATIONAL, 1),
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45576: ("AxisDistance_X", SIGNED_RATIONAL, 1),
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45577: ("AxisDistance_Y", SIGNED_RATIONAL, 1),
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45578: ("AxisDistance_Z", SIGNED_RATIONAL, 1),
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45579: ("YawAngle", SIGNED_RATIONAL, 1),
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45580: ("PitchAngle", SIGNED_RATIONAL, 1),
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45581: ("RollAngle", SIGNED_RATIONAL, 1),
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40960: ("FlashPixVersion", UNDEFINED, 1),
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50741: ("MakerNoteSafety", SHORT, 1, {"Unsafe": 0, "Safe": 1}),
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50780: ("BestQualityScale", RATIONAL, 1),
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50838: ("ImageJMetaDataByteCounts", LONG, 0), # Can be more than one
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50839: ("ImageJMetaData", UNDEFINED, 1), # see Issue #2006
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}
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TAGS_V2_GROUPS = {
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# ExifIFD
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34665: {
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36864: ("ExifVersion", UNDEFINED, 1),
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40960: ("FlashPixVersion", UNDEFINED, 1),
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40965: ("InteroperabilityIFD", LONG, 1),
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41730: ("CFAPattern", UNDEFINED, 1),
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},
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# GPSInfoIFD
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34853: {
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0: ("GPSVersionID", BYTE, 4),
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1: ("GPSLatitudeRef", ASCII, 2),
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2: ("GPSLatitude", RATIONAL, 3),
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3: ("GPSLongitudeRef", ASCII, 2),
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4: ("GPSLongitude", RATIONAL, 3),
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5: ("GPSAltitudeRef", BYTE, 1),
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6: ("GPSAltitude", RATIONAL, 1),
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7: ("GPSTimeStamp", RATIONAL, 3),
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8: ("GPSSatellites", ASCII, 0),
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9: ("GPSStatus", ASCII, 2),
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10: ("GPSMeasureMode", ASCII, 2),
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11: ("GPSDOP", RATIONAL, 1),
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12: ("GPSSpeedRef", ASCII, 2),
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13: ("GPSSpeed", RATIONAL, 1),
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14: ("GPSTrackRef", ASCII, 2),
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15: ("GPSTrack", RATIONAL, 1),
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16: ("GPSImgDirectionRef", ASCII, 2),
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17: ("GPSImgDirection", RATIONAL, 1),
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18: ("GPSMapDatum", ASCII, 0),
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19: ("GPSDestLatitudeRef", ASCII, 2),
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20: ("GPSDestLatitude", RATIONAL, 3),
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21: ("GPSDestLongitudeRef", ASCII, 2),
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22: ("GPSDestLongitude", RATIONAL, 3),
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23: ("GPSDestBearingRef", ASCII, 2),
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24: ("GPSDestBearing", RATIONAL, 1),
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25: ("GPSDestDistanceRef", ASCII, 2),
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26: ("GPSDestDistance", RATIONAL, 1),
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27: ("GPSProcessingMethod", UNDEFINED, 0),
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28: ("GPSAreaInformation", UNDEFINED, 0),
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29: ("GPSDateStamp", ASCII, 11),
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30: ("GPSDifferential", SHORT, 1),
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},
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# InteroperabilityIFD
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40965: {1: ("InteropIndex", ASCII, 1), 2: ("InteropVersion", UNDEFINED, 1)},
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}
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# Legacy Tags structure
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# these tags aren't included above, but were in the previous versions
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TAGS = {
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347: "JPEGTables",
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700: "XMP",
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# Additional Exif Info
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32932: "Wang Annotation",
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33434: "ExposureTime",
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33437: "FNumber",
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33445: "MD FileTag",
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33446: "MD ScalePixel",
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33447: "MD ColorTable",
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33448: "MD LabName",
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33449: "MD SampleInfo",
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33450: "MD PrepDate",
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33451: "MD PrepTime",
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33452: "MD FileUnits",
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33550: "ModelPixelScaleTag",
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33723: "IptcNaaInfo",
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33918: "INGR Packet Data Tag",
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33919: "INGR Flag Registers",
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33920: "IrasB Transformation Matrix",
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33922: "ModelTiepointTag",
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34264: "ModelTransformationTag",
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34377: "PhotoshopInfo",
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34735: "GeoKeyDirectoryTag",
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34736: "GeoDoubleParamsTag",
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34737: "GeoAsciiParamsTag",
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34850: "ExposureProgram",
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34852: "SpectralSensitivity",
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34855: "ISOSpeedRatings",
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34856: "OECF",
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34864: "SensitivityType",
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34865: "StandardOutputSensitivity",
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34866: "RecommendedExposureIndex",
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34867: "ISOSpeed",
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34868: "ISOSpeedLatitudeyyy",
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34869: "ISOSpeedLatitudezzz",
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34908: "HylaFAX FaxRecvParams",
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34909: "HylaFAX FaxSubAddress",
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34910: "HylaFAX FaxRecvTime",
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36864: "ExifVersion",
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36867: "DateTimeOriginal",
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36868: "DateTimeDigitized",
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37121: "ComponentsConfiguration",
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37122: "CompressedBitsPerPixel",
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37724: "ImageSourceData",
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37377: "ShutterSpeedValue",
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37378: "ApertureValue",
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37379: "BrightnessValue",
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37380: "ExposureBiasValue",
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37381: "MaxApertureValue",
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37382: "SubjectDistance",
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37383: "MeteringMode",
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37384: "LightSource",
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37385: "Flash",
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37386: "FocalLength",
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37396: "SubjectArea",
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37500: "MakerNote",
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37510: "UserComment",
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37520: "SubSec",
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37521: "SubSecTimeOriginal",
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37522: "SubsecTimeDigitized",
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40960: "FlashPixVersion",
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40961: "ColorSpace",
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40962: "PixelXDimension",
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40963: "PixelYDimension",
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40964: "RelatedSoundFile",
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40965: "InteroperabilityIFD",
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41483: "FlashEnergy",
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41484: "SpatialFrequencyResponse",
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41486: "FocalPlaneXResolution",
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41487: "FocalPlaneYResolution",
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41488: "FocalPlaneResolutionUnit",
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41492: "SubjectLocation",
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41493: "ExposureIndex",
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41495: "SensingMethod",
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41728: "FileSource",
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41729: "SceneType",
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41730: "CFAPattern",
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41985: "CustomRendered",
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41986: "ExposureMode",
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41987: "WhiteBalance",
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41988: "DigitalZoomRatio",
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41989: "FocalLengthIn35mmFilm",
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41990: "SceneCaptureType",
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41991: "GainControl",
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41992: "Contrast",
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41993: "Saturation",
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41994: "Sharpness",
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41995: "DeviceSettingDescription",
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41996: "SubjectDistanceRange",
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42016: "ImageUniqueID",
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42032: "CameraOwnerName",
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42033: "BodySerialNumber",
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42034: "LensSpecification",
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42035: "LensMake",
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42036: "LensModel",
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42037: "LensSerialNumber",
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42112: "GDAL_METADATA",
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42113: "GDAL_NODATA",
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42240: "Gamma",
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50215: "Oce Scanjob Description",
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50216: "Oce Application Selector",
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50217: "Oce Identification Number",
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50218: "Oce ImageLogic Characteristics",
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# Adobe DNG
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50706: "DNGVersion",
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50707: "DNGBackwardVersion",
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50708: "UniqueCameraModel",
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50709: "LocalizedCameraModel",
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50710: "CFAPlaneColor",
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50711: "CFALayout",
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50712: "LinearizationTable",
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50713: "BlackLevelRepeatDim",
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50714: "BlackLevel",
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50715: "BlackLevelDeltaH",
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50716: "BlackLevelDeltaV",
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50717: "WhiteLevel",
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50718: "DefaultScale",
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50719: "DefaultCropOrigin",
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50720: "DefaultCropSize",
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50721: "ColorMatrix1",
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50722: "ColorMatrix2",
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50723: "CameraCalibration1",
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50724: "CameraCalibration2",
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50725: "ReductionMatrix1",
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50726: "ReductionMatrix2",
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50727: "AnalogBalance",
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50728: "AsShotNeutral",
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50729: "AsShotWhiteXY",
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50730: "BaselineExposure",
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50731: "BaselineNoise",
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50732: "BaselineSharpness",
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50733: "BayerGreenSplit",
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50734: "LinearResponseLimit",
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50735: "CameraSerialNumber",
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50736: "LensInfo",
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50737: "ChromaBlurRadius",
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50738: "AntiAliasStrength",
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50740: "DNGPrivateData",
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50778: "CalibrationIlluminant1",
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50779: "CalibrationIlluminant2",
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50784: "Alias Layer Metadata",
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}
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def _populate():
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for k, v in TAGS_V2.items():
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# Populate legacy structure.
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TAGS[k] = v[0]
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if len(v) == 4:
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for sk, sv in v[3].items():
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TAGS[(k, sv)] = sk
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TAGS_V2[k] = TagInfo(k, *v)
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for group, tags in TAGS_V2_GROUPS.items():
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for k, v in tags.items():
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tags[k] = TagInfo(k, *v)
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_populate()
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##
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# Map type numbers to type names -- defined in ImageFileDirectory.
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TYPES = {}
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# was:
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# TYPES = {
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# 1: "byte",
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# 2: "ascii",
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# 3: "short",
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# 4: "long",
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# 5: "rational",
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# 6: "signed byte",
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# 7: "undefined",
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# 8: "signed short",
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# 9: "signed long",
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# 10: "signed rational",
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# 11: "float",
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# 12: "double",
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# }
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#
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# These tags are handled by default in libtiff, without
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# adding to the custom dictionary. From tif_dir.c, searching for
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# case TIFFTAG in the _TIFFVSetField function:
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# Line: item.
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# 148: case TIFFTAG_SUBFILETYPE:
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# 151: case TIFFTAG_IMAGEWIDTH:
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# 154: case TIFFTAG_IMAGELENGTH:
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# 157: case TIFFTAG_BITSPERSAMPLE:
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# 181: case TIFFTAG_COMPRESSION:
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# 202: case TIFFTAG_PHOTOMETRIC:
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# 205: case TIFFTAG_THRESHHOLDING:
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# 208: case TIFFTAG_FILLORDER:
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# 214: case TIFFTAG_ORIENTATION:
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# 221: case TIFFTAG_SAMPLESPERPIXEL:
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# 228: case TIFFTAG_ROWSPERSTRIP:
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# 238: case TIFFTAG_MINSAMPLEVALUE:
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# 241: case TIFFTAG_MAXSAMPLEVALUE:
|
|
# 244: case TIFFTAG_SMINSAMPLEVALUE:
|
|
# 247: case TIFFTAG_SMAXSAMPLEVALUE:
|
|
# 250: case TIFFTAG_XRESOLUTION:
|
|
# 256: case TIFFTAG_YRESOLUTION:
|
|
# 262: case TIFFTAG_PLANARCONFIG:
|
|
# 268: case TIFFTAG_XPOSITION:
|
|
# 271: case TIFFTAG_YPOSITION:
|
|
# 274: case TIFFTAG_RESOLUTIONUNIT:
|
|
# 280: case TIFFTAG_PAGENUMBER:
|
|
# 284: case TIFFTAG_HALFTONEHINTS:
|
|
# 288: case TIFFTAG_COLORMAP:
|
|
# 294: case TIFFTAG_EXTRASAMPLES:
|
|
# 298: case TIFFTAG_MATTEING:
|
|
# 305: case TIFFTAG_TILEWIDTH:
|
|
# 316: case TIFFTAG_TILELENGTH:
|
|
# 327: case TIFFTAG_TILEDEPTH:
|
|
# 333: case TIFFTAG_DATATYPE:
|
|
# 344: case TIFFTAG_SAMPLEFORMAT:
|
|
# 361: case TIFFTAG_IMAGEDEPTH:
|
|
# 364: case TIFFTAG_SUBIFD:
|
|
# 376: case TIFFTAG_YCBCRPOSITIONING:
|
|
# 379: case TIFFTAG_YCBCRSUBSAMPLING:
|
|
# 383: case TIFFTAG_TRANSFERFUNCTION:
|
|
# 389: case TIFFTAG_REFERENCEBLACKWHITE:
|
|
# 393: case TIFFTAG_INKNAMES:
|
|
|
|
# Following pseudo-tags are also handled by default in libtiff:
|
|
# TIFFTAG_JPEGQUALITY 65537
|
|
|
|
# some of these are not in our TAGS_V2 dict and were included from tiff.h
|
|
|
|
# This list also exists in encode.c
|
|
LIBTIFF_CORE = {
|
|
255,
|
|
256,
|
|
257,
|
|
258,
|
|
259,
|
|
262,
|
|
263,
|
|
266,
|
|
274,
|
|
277,
|
|
278,
|
|
280,
|
|
281,
|
|
340,
|
|
341,
|
|
282,
|
|
283,
|
|
284,
|
|
286,
|
|
287,
|
|
296,
|
|
297,
|
|
321,
|
|
320,
|
|
338,
|
|
32995,
|
|
322,
|
|
323,
|
|
32998,
|
|
32996,
|
|
339,
|
|
32997,
|
|
330,
|
|
531,
|
|
530,
|
|
301,
|
|
532,
|
|
333,
|
|
# as above
|
|
269, # this has been in our tests forever, and works
|
|
65537,
|
|
}
|
|
|
|
LIBTIFF_CORE.remove(255) # We don't have support for subfiletypes
|
|
LIBTIFF_CORE.remove(322) # We don't have support for writing tiled images with libtiff
|
|
LIBTIFF_CORE.remove(323) # Tiled images
|
|
LIBTIFF_CORE.remove(333) # Ink Names either
|
|
|
|
# Note to advanced users: There may be combinations of these
|
|
# parameters and values that when added properly, will work and
|
|
# produce valid tiff images that may work in your application.
|
|
# It is safe to add and remove tags from this set from Pillow's point
|
|
# of view so long as you test against libtiff.
|