Generate TIFF structs/enums from a text file

This is to make the tables much easier to maintain.

4 files changed, 531 insertions, 504 deletions

diff --git a/meson.build b/meson.build
index a33cbd7..c511d6a 100644
--- a/meson.build
+++ b/meson.build
@@ -96,6 +96,13 @@ resources = gnome.compile_resources('resources',
 	c_name : 'resources',
 )
 
+tiff_tables = custom_target('tiff-tables.h',
+	output : 'tiff-tables.h',
+	input : 'tiff-tables.db',
+	command : ['tiff-tables.awk', '@INPUT@'],
+	capture : true,
+)
+
 exe = executable('fiv', 'fiv.c', 'fiv-view.c', 'fiv-io.c',
 	'fiv-browser.c', 'fiv-sidebar.c', 'fiv-thumbnail.c', 'xdg.c', resources,
 	install : true,
@@ -122,7 +129,7 @@ if get_option('tools').enabled()
 	tools_c_args = cc.get_supported_arguments(
 		'-Wno-unused-function', '-Wno-unused-parameter')
 	foreach tool : ['pnginfo', 'jpeginfo', 'tiffinfo', 'webpinfo', 'bmffinfo']
-		executable(tool, 'tools/' + tool + '.c',
+		executable(tool, 'tools/' + tool + '.c', tiff_tables,
 			dependencies : tools_dependencies,
 			c_args: tools_c_args)
 	endforeach
diff --git a/tiff-tables.awk b/tiff-tables.awk
new file mode 100755
index 0000000..2d93c36
--- /dev/null
+++ b/tiff-tables.awk
@@ -0,0 +1,94 @@
+#!/usr/bin/awk -f
+BEGIN {
+	FS = ", *"
+	print "// Generated by tiff-tables.awk. DO NOT MODIFY."
+}
+
+{
+	# Remember and strip consecutive comments.
+	if (match($0, /#/))
+		comment[++comments] = substr($0, RSTART + 1)
+	else if (!/[[:space:]]/)
+		comments = 0
+
+	sub(/#.*$/, "")
+	sub(/[[:space:]]*$/, "")
+}
+
+# Converts arbitrary strings to C identifiers (when running in the C locale).
+function identifize(s) {
+	# Regard parenthesised text as comments.
+	while (match(s, /[[:space:]]\([^)]+\)/)) {
+		comment[++comments] = substr(s, RSTART, RLENGTH)
+		s = substr(s, 1, RSTART - 1) substr(s, RSTART + RLENGTH)
+	}
+
+	# Capitalize words (toupper is POSIX), removing spaces and dashes between.
+	while (match(s, /[-[:space:]]./)) {
+		s = substr(s, 1, RSTART - 1) \
+			toupper(substr(s, RSTART + 1, 1)) \
+			substr(s, RSTART + RLENGTH)
+	}
+
+	# Replace any remaining non-identifier characters with underscores.
+	gsub(/[^[:alnum:]]/, "_", s)
+	return s
+}
+
+function flushcomments(prefix,    i, acc) {
+	for (i = 1; i <= comments; i++)
+		acc = acc prefix comment[i] "\n"
+	comments = 0
+	return acc
+}
+
+function flushvalues() {
+	if (values) {
+		allvalues = allvalues "enum " fieldname " {\n" values "};\n\n"
+		values = ""
+		fields = fields "\n\t\t{}\n\t}},"
+	} else if (fields) {
+		fields = fields " NULL},"
+	}
+}
+
+function flushsection() {
+	if (section) {
+		flushvalues()
+		print "};\n\n" allvalues "static struct tiff_entry " \
+			  sectionsnakecase "_entries[] = {" fields "\n\t{}\n};"
+	}
+}
+
+# Section marker
+/^= / {
+	flushsection()
+	section = identifize(substr($0, 3))
+	sectionsnakecase = tolower(substr($0, 3))
+	gsub(/[^[:alnum:]]/, "_", sectionsnakecase)
+	fields = ""
+	allvalues = ""
+	print "\n" flushcomments("//") "enum {"
+}
+
+# Field
+section && /^[^\t=]/ {
+	flushvalues()
+	fieldname = section "_" identifize($2)
+	fields = fields "\n\t{\"" $2 "\", " fieldname ","
+	print flushcomments("\t//") "\t" fieldname " = " $1 ","
+}
+
+# Value
+section && /^\t/ {
+	sub(/^\t*/, "")
+	valuename = fieldname "_" identifize($2)
+	if (!values)
+		fields = fields " (struct tiff_value[]) {"
+	values = values flushcomments("\t//") "\t" valuename " = " $1 ",\n"
+	fields = fields "\n\t\t{\"" $2 "\", " valuename "},"
+}
+
+END {
+	flushsection()
+}
diff --git a/tiff-tables.db b/tiff-tables.db
new file mode 100644
index 0000000..8b0e206
--- /dev/null
+++ b/tiff-tables.db
@@ -0,0 +1,427 @@
+# Use tiff-tables.awk to produce a C source file from this database.
+
+# Use the Internet Archive should any of these links go down.
+#
+# TIFF Revision 6.0 (1992)
+# https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFF6.pdf
+#
+# TIFF Technical Note 1: TIFF Trees (1993)
+# https://download.osgeo.org/libtiff/old/TTN1.ps
+#
+# DRAFT TIFF Technical Note 2 (1995)
+# https://www.awaresystems.be/imaging/tiff/specification/TIFFTechNote2.txt
+#
+# Adobe PageMaker 6.0 TIFF Technical Notes (1995) [includes TTN1]
+# https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFFPM6.pdf
+#
+# Adobe Photoshop TIFF Technical Notes (2002)
+# https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFFphotoshop.pdf
+# https://www.alternatiff.com/resources/TIFFphotoshop.pdf
+#  - Note that ImageSourceData 8BIM frames are specified differently
+#    from how Adobe XMP Specification Part 3 defines them.
+#  - The document places a condition on SubIFDs, without further explanation.
+#
+# Adobe Photoshop TIFF Technical Note 3 (2005)
+# http://chriscox.org/TIFFTN3d1.pdf
+#
+# Exif Version 2.3 (2012)
+# https://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf
+#
+# Exif Version 2.32 (2019)
+# https://www.cipa.jp/e/std/std-sec.html
+#
+# Digital Negative (DNG) Specification 1.5.0.0 (2019)
+# https://www.adobe.com/content/dam/acom/en/products/photoshop/pdfs/dng_spec_1.5.0.0.pdf
+
+# TIFF 6.0
+= TIFF
+254, NewSubfileType
+255, SubfileType
+	1, Full-resolution image data
+	2, Reduced-resolution image data
+	3, Page of a multi-page image
+256, ImageWidth
+257, ImageLength
+258, BitsPerSample
+259, Compression
+	1, Uncompressed
+	2, CCITT 1D
+	3, Group 3 Fax
+	4, Group 4 Fax
+	5, LZW
+	6, JPEG
+	7, JPEG datastream  # DRAFT TIFF Technical Note 2 + TIFFphotoshop.pdf
+	8, Deflate/zlib  # Adobe Photoshop TIFF Technical Notes
+	32773, PackBits
+	32946, Deflate  # Adobe Photoshop TIFF Technical Notes
+262, PhotometricInterpretation
+	0, WhiteIsZero
+	1, BlackIsZero
+	2, RGB
+	3, RGB Palette
+	4, Transparency mask
+	5, CMYK
+	6, YCbCr
+	8, CIELab
+	9, ICCLab  # Adobe PageMaker 6.0 TIFF Technical Notes
+263, Threshholding
+	1, No dithering or halftoning
+	2, Ordered dither or halftoning
+	3, Randomized process
+264, CellWidth
+265, CellLength
+266, FillOrder
+	1, MSB-first
+	2, LSB-first
+269, DocumentName
+270, ImageDescription
+271, Make
+272, Model
+273, StripOffsets
+274, Orientation
+	1, TopLeft
+	2, TopRight
+	3, BottomRight
+	4, BottomLeft
+	5, LeftTop
+	6, RightTop
+	7, RightBottom
+	8, LeftBottom
+277, SamplesPerPixel
+278, RowsPerStrip
+279, StripByteCounts
+280, MinSampleValue
+281, MaxSampleValue
+282, XResolution
+283, YResolution
+284, PlanarConfiguration
+	1, Chunky
+	2, Planar
+285, PageName
+286, XPosition
+287, YPosition
+288, FreeOffsets
+289, FreeByteCounts
+290, GrayResponseUnit
+	1, 1/10
+	2, 1/100
+	3, 1/1000
+	4, 1/10000
+	5, 1/100000
+291, GrayResponseCurve
+292, T4Options
+293, T6Options
+296, ResolutionUnit
+	1, None
+	2, Inch
+	3, Centimeter
+297, PageNumber
+301, TransferFunction
+305, Software
+306, DateTime
+315, Artist
+316, HostComputer
+317, Predictor
+	1, None
+	2, Horizontal
+	3, Floating point  # Adobe Photoshop TIFF Technical Note 3
+318, WhitePoint
+319, PrimaryChromaticities
+320, ColorMap
+321, HalftoneHints
+322, TileWidth
+323, TileLength
+324, TileOffsets
+325, TileByteCounts
+330, SubIFDs  # TIFF Technical Note 1: TIFF Trees
+332, InkSet
+	1, CMYK
+	2, Non-CMYK
+333, InkNames
+334, NumberOfInks
+336, DotRange
+337, TargetPrinter
+338, ExtraSamples
+	0, Unspecified
+	1, Associated alpha
+	2, Unassociated alpha
+339, SampleFormat
+	1, Unsigned integer
+	2, Two's complement signed integer
+	3, IEEE floating-point
+	4, Undefined
+340, SMinSampleValue
+341, SMaxSampleValue
+342, TransferRange
+343, ClipPath  # TIFF Technical Note 2: Clipping Path
+344, XClipPathUnits  # TIFF Technical Note 2: Clipping Path
+345, YClipPathUnits  # TIFF Technical Note 2: Clipping Path
+346, Indexed  # TIFF Technical Note 3: Indexed Images
+347, JPEGTables  # DRAFT TIFF Technical Note 2 + TIFFphotoshop.pdf
+351, OPIProxy  # Adobe PageMaker 6.0 TIFF Technical Notes
+512, JPEGProc
+	1, Baseline sequential
+	14, Lossless Huffman
+513, JPEGInterchangeFormat
+514, JPEGInterchangeFormatLength
+515, JPEGRestartInterval
+517, JPEGLosslessPredictors
+	1, A
+	2, B
+	3, C
+	4, A+B+C
+	5, A+((B-C)/2)
+	6, B+((A-C)/2)
+	7, (A+B)/2
+518, JPEGPointTransforms
+519, JPEGQTables
+520, JPEGDCTables
+521, JPEGACTables
+529, YCbCrCoefficients
+530, YCbCrSubSampling
+531, YCbCrPositioning
+	1, Centered
+	2, Co-sited
+532, ReferenceBlackWhite
+700, XMP  # Adobe XMP Specification Part 3 Table 12/13/39
+32781, ImageID  # Adobe PageMaker 6.0 TIFF Technical Notes
+33432, Copyright
+# TODO(p): Extract IPTC DataSets, like we do directly with PSIRs.
+33723, IPTC  # Adobe XMP Specification Part 3 Table 12/39
+# TODO(p): Extract PSIRs, like we do directly with the JPEG segment.
+34377, Photoshop  # Adobe XMP Specification Part 3 Table 12/39
+34665, Exif IFD Pointer  # Exif 2.3
+34853, GPS Info IFD Pointer  # Exif 2.3
+37398, TIFF/EP StandardID  # ISO 12234 TIFF/EP image data format
+37724, ImageSourceData  # Adobe Photoshop TIFF Technical Notes
+50706, DNGVersion  # DNG 1.5.0.0
+50707, DNGBackwardVersion  # DNG 1.5.0.0
+50708, UniqueCameraModel  # DNG 1.5.0.0
+50709, LocalizedCameraModel  # DNG 1.5.0.0
+# TODO(p): Add more DNG tags that can be only in IFD0.
+
+# Exif 2.3 4.6.5
+= Exif
+33434, ExposureTime
+33437, FNumber
+34850, ExposureProgram
+	0, Not defined
+	1, Manual
+	2, Normal program
+	3, Aperture priority
+	4, Shutter priority
+	5, Creative program
+	6, Action program
+	7, Portrait mode
+	8, Landscape mode
+34852, SpectralSensitivity
+34855, PhotographicSensitivity
+34856, OECF
+34864, SensitivityType
+	0, Unknown
+	1, Standard output sensitivity
+	2, Recommended exposure index
+	3, ISO speed
+	4, SOS and REI
+	5, SOS and ISO speed
+	6, REI and ISO speed
+	7, SOS and REI and ISO speed
+34865, StandardOutputSensitivity
+34866, RecommendedExposureIndex
+34867, ISOSpeed
+34868, ISOSpeedLatitudeyyy
+34869, ISOSpeedLatitudezzz
+36864, ExifVersion
+36867, DateTimeOriginal
+36868, DateTimeDigitized
+36880, OffsetTime  # 2.31
+36881, OffsetTimeOriginal  # 2.31
+36882, OffsetTimeDigitized  # 2.31
+37121, ComponentsConfiguration
+	0, Does not exist
+	1, Y
+	2, Cb
+	3, Cr
+	4, R
+	5, G
+	6, B
+37122, CompressedBitsPerPixel
+37377, ShutterSpeedValue
+37378, ApertureValue
+37379, BrightnessValue
+37380, ExposureBiasValue
+37381, MaxApertureValue
+37382, SubjectDistance
+37383, MeteringMode
+	0, Unknown
+	1, Average
+	2, CenterWeightedAverage
+	3, Spot
+	4, MultiSpot
+	5, Pattern
+	6, Partial
+	255, Other
+37384, 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 - 5500K)
+	14, Cool white fluorescent (W 3800 - 4500K)
+	15, White fluorescent (WW 3250 - 3800K)
+	16, Warm white fluorescent (L 2600 - 3250K)
+	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 light source
+37385, Flash
+37386, FocalLength
+37396, SubjectArea
+37500, MakerNote
+# TODO(p): Decode.
+37510, UserComment
+37520, SubSecTime
+37521, SubSecTimeOriginal
+37522, SubSecTimeDigitized
+37888, Temperature  # 2.31
+37889, Humidity  # 2.31
+37890, Pressure  # 2.31
+37891, WaterDepth  # 2.31
+37892, Acceleration  # 2.31
+37893, CameraElevationAngle  # 2.31
+40960, FlashpixVersion
+40961, ColorSpace
+	1, sRGB
+	65535, Uncalibrated
+40962, PixelXDimension
+40963, PixelYDimension
+40964, RelatedSoundFile
+40965, Interoperability IFD Pointer
+41483, FlashEnergy
+41484, SpatialFrequencyResponse
+41486, FocalPlaneXResolution
+41487, FocalPlaneYResolution
+41488, FocalPlaneResolutionUnit
+41492, SubjectLocation
+41493, ExposureIndex
+41495, SensingMethod
+	1, Not defined
+	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
+41728, FileSource
+	0, Others
+	1, Scanner of transparent type
+	2, Scanner of reflex type
+	3, DSC
+41729, SceneType
+	1, Directly-photographed image
+41730, CFAPattern
+41985, CustomRendered
+	0, Normal process
+	1, Custom process
+41986, ExposureMode
+	0, Auto exposure
+	1, Manual exposure
+	2, Auto bracket
+41987, WhiteBalance
+	0, Auto white balance
+	1, Manual white balance
+41988, DigitalZoomRatio
+41989, FocalLengthIn35mmFilm
+41990, SceneCaptureType
+	0, Standard
+	1, Landscape
+	2, Portrait
+	3, Night scene
+41991, GainControl
+	0, None
+	1, Low gain up
+	2, High gain up
+	3, Low gain down
+	4, High gain down
+41992, Contrast
+	0, Normal
+	1, Soft
+	2, Hard
+41993, Saturation
+	0, Normal
+	1, Low
+	2, High
+41994, Sharpness
+	0, Normal
+	1, Soft
+	2, Hard
+41995, DeviceSettingDescription
+41996, SubjectDistanceRange
+	0, Unknown
+	1, Macro
+	2, Close view
+	3, Distant view
+42016, ImageUniqueID
+42032, CameraOwnerName
+42033, BodySerialNumber
+42034, LensSpecification
+42035, LensMake
+42036, LensModel
+42037, LensSerialNumber
+42080, CompositeImage  # 2.32
+42081, SourceImageNumberOfCompositeImage  # 2.32
+42082, SourceExposureTimesOfCompositeImage  # 2.32
+42240, Gamma
+
+# Exif 2.3 4.6.6 (Notice it starts at 0.)
+= Exif GPS
+0, GPSVersionID
+1, GPSLatitudeRef
+2, GPSLatitude
+3, GPSLongitudeRef
+4, GPSLongitude
+5, GPSAltitudeRef
+	0, Sea level
+	1, Sea level reference (negative value)
+6, GPSAltitude
+7, GPSTimeStamp
+8, GPSSatellites
+9, GPSStatus
+10, GPSMeasureMode
+11, GPSDOP
+12, GPSSpeedRef
+13, GPSSpeed
+14, GPSTrackRef
+15, GPSTrack
+16, GPSImgDirectionRef
+17, GPSImgDirection
+18, GPSMapDatum
+19, GPSDestLatitudeRef
+20, GPSDestLatitude
+21, GPSDestLongitudeRef
+22, GPSDestLongitude
+23, GPSDestBearingRef
+24, GPSDestBearing
+25, GPSDestDistanceRef
+26, GPSDestDistance
+27, GPSProcessingMethod
+28, GPSAreaInformation
+29, GPSDateStamp
+30, GPSDifferential
+	0, Measurement without differential correction
+	1, Differential correction applied
+31, GPSHPositioningError
+
+# Exif 2.3 4.6.7 (Notice it starts at 1, and collides with GPS.)
+= Exif Interoperability
+1, InteroperabilityIndex
diff --git a/tools/info.h b/tools/info.h
index ef58d7b..816c9cf 100644
--- a/tools/info.h
+++ b/tools/info.h
@@ -76,37 +76,6 @@ u16le(const uint8_t *p)
 }
 
 // --- TIFF --------------------------------------------------------------------
-// TIFF Revision 6.0 (1992)
-// https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFF6.pdf
-//
-// TIFF Technical Note 1: TIFF Trees (1993)
-// https://download.osgeo.org/libtiff/old/TTN1.ps
-//
-// DRAFT TIFF Technical Note 2 (1995)
-// https://www.awaresystems.be/imaging/tiff/specification/TIFFTechNote2.txt
-//
-// Adobe PageMaker 6.0 TIFF Technical Notes (1995) [includes TTN1]
-// https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFFPM6.pdf
-//
-// Adobe Photoshop TIFF Technical Notes (2002)
-// https://www.adobe.io/content/dam/udp/en/open/standards/tiff/TIFFphotoshop.pdf
-//  - Note that ImageSourceData 8BIM frames are specified differently
-//    from how Adobe XMP Specification Part 3 defines them.
-//  - The document places a condition on SubIFDs, without further explanation.
-//
-// Adobe Photoshop TIFF Technical Note 3 (2005)
-// http://chriscox.org/TIFFTN3d1.pdf
-//
-// Exif Version 2.3 (2012)
-// https://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf
-//
-// Exif Version 2.32 (2019)
-// https://www.cipa.jp/e/std/std-sec.html
-//
-// Digital Negative (DNG) Specification 1.5.0.0 (2019)
-// https://www.adobe.com/content/dam/acom/en/products/photoshop/pdfs
-// /dng_spec_1.5.0.0.pdf
-//
 // libtiff is a mess, and the format is not particularly complicated.
 // Exiv2 is senselessly copylefted, and cannot do much.
 // libexif is only marginally better.
@@ -391,477 +360,7 @@ struct tiff_entry {
 	struct tiff_value *values;
 };
 
-static struct tiff_entry tiff_entries[] = {
-	{"NewSubfileType", 254, NULL},
-	{"SubfileType", 255, (struct tiff_value[]) {
-		{"Full-resolution image data", 1},
-		{"Reduced-resolution image data", 2},
-		{"Page of a multi-page image", 3},
-		{}
-	}},
-	{"ImageWidth", 256, NULL},
-	{"ImageLength", 257, NULL},
-	{"BitsPerSample", 258, NULL},
-	{"Compression", 259, (struct tiff_value[]) {
-		{"Uncompressed", 1},
-		{"CCITT 1D", 2},
-		{"Group 3 Fax", 3},
-		{"Group 4 Fax", 4},
-		{"LZW", 5},
-		{"JPEG", 6},
-		{"JPEG datastream", 7},  // DRAFT TIFF Technical Note 2 + TIFFphotoshop
-		{"Deflate/zlib", 8},  // Adobe Photoshop TIFF Technical Notes
-		{"PackBits", 32773},
-		{"Deflate/zlib", 32946},  // Adobe Photoshop TIFF Technical Notes
-		{}
-	}},
-	{"PhotometricInterpretation", 262, (struct tiff_value[]) {
-		{"WhiteIsZero", 0},
-		{"BlackIsZero", 1},
-		{"RGB", 2},
-		{"RGB Palette", 3},
-		{"Transparency mask", 4},
-		{"CMYK", 5},
-		{"YCbCr", 6},
-		{"CIELab", 8},
-		{"ICCLab", 9},  // Adobe PageMaker 6.0 TIFF Technical Notes
-		{}
-	}},
-	{"Threshholding", 263, (struct tiff_value[]) {
-		{"No dithering or halftoning", 1},
-		{"Ordered dither or halftoning", 2},
-		{"Randomized process", 3},
-		{}
-	}},
-	{"CellWidth", 264, NULL},
-	{"CellLength", 265, NULL},
-	{"FillOrder", 266, (struct tiff_value[]) {
-		{"MSB-first", 1},
-		{"LSB-first", 2},
-		{}
-	}},
-	{"DocumentName", 269, NULL},
-	{"ImageDescription", 270, NULL},
-	{"Make", 271, NULL},
-	{"Model", 272, NULL},
-	{"StripOffsets", 273, NULL},
-	{"Orientation", 274, (struct tiff_value[]) {
-		{"TopLeft", 1},
-		{"TopRight", 2},
-		{"BottomRight", 3},
-		{"BottomLeft", 4},
-		{"LeftTop", 5},
-		{"RightTop", 6},
-		{"RightBottom", 7},
-		{"LeftBottom", 8},
-		{}
-	}},
-	{"SamplesPerPixel", 277, NULL},
-	{"RowsPerStrip", 278, NULL},
-	{"StripByteCounts", 279, NULL},
-	{"MinSampleValue", 280, NULL},
-	{"MaxSampleValue", 281, NULL},
-	{"XResolution", 282, NULL},
-	{"YResolution", 283, NULL},
-	{"PlanarConfiguration", 284, (struct tiff_value[]) {
-		{"Chunky", 1},
-		{"Planar", 2},
-		{}
-	}},
-	{"PageName", 285, NULL},
-	{"XPosition", 286, NULL},
-	{"YPosition", 287, NULL},
-	{"FreeOffsets", 288, NULL},
-	{"FreeByteCounts", 289, NULL},
-	{"GrayResponseUnit", 290, (struct tiff_value[]) {
-		{"1/10", 1},
-		{"1/100", 2},
-		{"1/1000", 3},
-		{"1/10000", 4},
-		{"1/100000", 5},
-		{}
-	}},
-	{"GrayResponseCurve", 291, NULL},
-	{"T4Options", 292, NULL},
-	{"T6Options", 293, NULL},
-	{"ResolutionUnit", 296, (struct tiff_value[]) {
-		{"None", 1},
-		{"Inch", 2},
-		{"Centimeter", 3},
-		{}
-	}},
-	{"PageNumber", 297, NULL},
-	{"TransferFunction", 301, NULL},
-	{"Software", 305, NULL},
-	{"DateTime", 306, NULL},
-	{"Artist", 315, NULL},
-	{"HostComputer", 316, NULL},
-	{"Predictor", 317, (struct tiff_value[]) {
-		{"None", 1},
-		{"Horizontal", 2},
-		{"Floating point", 3},  // Adobe Photoshop TIFF Technical Note 3
-		{}
-	}},
-	{"WhitePoint", 318, NULL},
-	{"PrimaryChromaticities", 319, NULL},
-	{"ColorMap", 320, NULL},
-	{"HalftoneHints", 321, NULL},
-	{"TileWidth", 322, NULL},
-	{"TileLength", 323, NULL},
-	{"TileOffsets", 324, NULL},
-	{"TileByteCounts", 325, NULL},
-	{"SubIFDs", 330, NULL},  // TIFF Technical Note 1: TIFF Trees
-	{"InkSet", 332, (struct tiff_value[]) {
-		{"CMYK", 1},
-		{"Non-CMYK", 2},
-		{}
-	}},
-	{"InkNames", 333, NULL},
-	{"NumberOfInks", 334, NULL},
-	{"DotRange", 336, NULL},
-	{"TargetPrinter", 337, NULL},
-	{"ExtraSamples", 338, (struct tiff_value[]) {
-		{"Unspecified", 0},
-		{"Associated alpha", 1},
-		{"Unassociated alpha", 2},
-		{}
-	}},
-	{"SampleFormat", 339, (struct tiff_value[]) {
-		{"Unsigned integer", 1},
-		{"Two's complement signed integer", 2},
-		{"IEEE floating-point", 3},
-		{"Undefined", 4},
-		{}
-	}},
-	{"SMinSampleValue", 340, NULL},
-	{"SMaxSampleValue", 341, NULL},
-	{"TransferRange", 342, NULL},
-	{"ClipPath", 343, NULL},  // TIFF Technical Note 2: Clipping Path
-	{"XClipPathUnits", 344, NULL},  // TIFF Technical Note 2: Clipping Path
-	{"YClipPathUnits", 345, NULL},  // TIFF Technical Note 2: Clipping Path
-	{"Indexed", 346, NULL},  // TIFF Technical Note 3: Indexed Images
-	{"JPEGTables", 347, NULL},  // DRAFT TIFF Technical Note 2 + TIFFphotoshop
-	{"OPIProxy", 351, NULL},  // Adobe PageMaker 6.0 TIFF Technical Notes
-	{"JPEGProc", 512, (struct tiff_value[]) {
-		{"Baseline sequential", 1},
-		{"Lossless Huffman", 14},
-		{}
-	}},
-	{"JPEGInterchangeFormat", 513, NULL},
-	{"JPEGInterchangeFormatLength", 514, NULL},
-	{"JPEGRestartInterval", 515, NULL},
-	{"JPEGLosslessPredictors", 517, (struct tiff_value[]) {
-		{"A", 1},
-		{"B", 2},
-		{"C", 3},
-		{"A+B+C", 4},
-		{"A+((B-C)/2)", 5},
-		{"B+((A-C)/2)", 6},
-		{"(A+B)/2", 7},
-		{}
-	}},
-	{"JPEGPointTransforms", 518, NULL},
-	{"JPEGQTables", 519, NULL},
-	{"JPEGDCTables", 520, NULL},
-	{"JPEGACTables", 521, NULL},
-	{"YCbCrCoefficients", 529, NULL},
-	{"YCbCrSubSampling", 530, NULL},
-	{"YCbCrPositioning", 531, (struct tiff_value[]) {
-		{"Centered", 1},
-		{"Co-sited", 2},
-		{}
-	}},
-	{"ReferenceBlackWhite", 532, NULL},
-	{"XMP", 700, NULL},  // Adobe XMP Specification Part 3 Table 12/13/39
-	{"ImageID", 32781, NULL},  // Adobe PageMaker 6.0 TIFF Technical Notes
-	{"Copyright", 33432, NULL},
-	// TODO(p): Extract IPTC DataSets, like we do directly with PSIRs.
-	{"IPTC", 33723, NULL},  // Adobe XMP Specification Part 3 Table 12/39
-	// TODO(p): Extract PSIRs, like we do directly with the JPEG segment.
-	{"Photoshop", 34377, NULL},  // Adobe XMP Specification Part 3 Table 12/39
-	{"Exif IFD Pointer", 34665, NULL},  // Exif 2.3
-	{"GPS Info IFD Pointer", 34853, NULL},  // Exif 2.3
-	{"TIFF/EP StandardID", 37398, NULL},  // ISO 12234 TIFF/EP image data format
-	{"ImageSourceData", 37724, NULL},  // Adobe Photoshop TIFF Technical Notes
-	{"DNGVersion", 50706, NULL},  // DNG 1.5.0.0
-	{"DNGBackwardVersion", 50707, NULL},  // DNG 1.5.0.0
-	{"UniqueCameraModel", 50708, NULL},  // DNG 1.5.0.0
-	{"LocalizedCameraModel", 50709, NULL},  // DNG 1.5.0.0
-	// TODO(p): Add more DNG tags that can be only in IFD0.
-	{}
-};
-
-// Exif 2.3 4.6.5
-static struct tiff_entry exif_entries[] = {
-	{"ExposureTime", 33434, NULL},
-	{"FNumber", 33437, NULL},
-	{"ExposureProgram", 34850, (struct tiff_value[]) {
-		{"Not defined", 0},
-		{"Manual", 1},
-		{"Normal program", 2},
-		{"Aperture priority", 3},
-		{"Shutter priority", 4},
-		{"Creative program", 5},
-		{"Action program", 6},
-		{"Portrait mode", 7},
-		{"Landscape mode", 8},
-		{}
-	}},
-	{"SpectralSensitivity", 34852, NULL},
-	{"PhotographicSensitivity", 34855, NULL},
-	{"OECF", 34856, NULL},
-	{"SensitivityType", 34864, (struct tiff_value[]) {
-		{"Unknown", 0},
-		{"Standard output sensitivity", 1},
-		{"Recommended exposure index", 2},
-		{"ISO speed", 3},
-		{"SOS and REI", 4},
-		{"SOS and ISO speed", 5},
-		{"REI and ISO speed", 6},
-		{"SOS and REI and ISO speed", 7},
-		{}
-	}},
-	{"StandardOutputSensitivity", 34865, NULL},
-	{"RecommendedExposureIndex", 34866, NULL},
-	{"ISOSpeed", 34867, NULL},
-	{"ISOSpeedLatitudeyyy", 34868, NULL},
-	{"ISOSpeedLatitudezzz", 34869, NULL},
-	{"ExifVersion", 36864, NULL},
-	{"DateTimeOriginal", 36867, NULL},
-	{"DateTimeDigitized", 36868, NULL},
-	{"OffsetTime", 36880, NULL},  // 2.31
-	{"OffsetTimeOriginal", 36881, NULL},  // 2.31
-	{"OffsetTimeDigitized", 36882, NULL},  // 2.31
-	{"ComponentsConfiguration", 37121, (struct tiff_value[]) {
-		{"Does not exist", 0},
-		{"Y", 1},
-		{"Cb", 2},
-		{"Cr", 3},
-		{"R", 4},
-		{"G", 5},
-		{"B", 6},
-		{}
-	}},
-	{"CompressedBitsPerPixel", 37122, NULL},
-	{"ShutterSpeedValue", 37377, NULL},
-	{"ApertureValue", 37378, NULL},
-	{"BrightnessValue", 37379, NULL},
-	{"ExposureBiasValue", 37380, NULL},
-	{"MaxApertureValue", 37381, NULL},
-	{"SubjectDistance", 37382, NULL},
-	{"MeteringMode", 37383, (struct tiff_value[]) {
-		{"Unknown", 0},
-		{"Average", 1},
-		{"CenterWeightedAverage", 2},
-		{"Spot", 3},
-		{"MultiSpot", 4},
-		{"Pattern", 5},
-		{"Partial", 6},
-		{"Other", 255},
-		{}
-	}},
-	{"LightSource", 37384, (struct tiff_value[]) {
-		{"Unknown", 0},
-		{"Daylight", 1},
-		{"Fluorescent", 2},
-		{"Tungsten (incandescent light)", 3},
-		{"Flash", 4},
-		{"Fine weather", 9},
-		{"Cloudy weather", 10},
-		{"Shade", 11},
-		{"Daylight fluorescent (D 5700 - 7100K)", 12},
-		{"Day white fluorescent (N 4600 - 5500K)", 13},
-		{"Cool white fluorescent (W 3800 - 4500K)", 14},
-		{"White fluorescent (WW 3250 - 3800K)", 15},
-		{"Warm white fluorescent (L 2600 - 3250K)", 16},
-		{"Standard light A", 17},
-		{"Standard light B", 18},
-		{"Standard light C", 19},
-		{"D55", 20},
-		{"D65", 21},
-		{"D75", 22},
-		{"D50", 23},
-		{"ISO studio tungsten", 24},
-		{"Other light source", 255},
-		{}
-	}},
-	{"Flash", 37385, NULL},
-	{"FocalLength", 37386, NULL},
-	{"SubjectArea", 37396, NULL},
-	{"MakerNote", 37500, NULL},
-	// TODO(p): Decode.
-	{"UserComment", 37510, NULL},
-	{"SubSecTime", 37520, NULL},
-	{"SubSecTimeOriginal", 37521, NULL},
-	{"SubSecTimeDigitized", 37522, NULL},
-	{"Temperature", 37888, NULL},  // 2.31
-	{"Humidity", 37889, NULL},  // 2.31
-	{"Pressure", 37890, NULL},  // 2.31
-	{"WaterDepth", 37891, NULL},  // 2.31
-	{"Acceleration", 37892, NULL},  // 2.31
-	{"CameraElevationAngle", 37893, NULL},  // 2.31
-	{"FlashpixVersion", 40960, NULL},
-	{"ColorSpace", 40961, (struct tiff_value[]) {
-		{"sRGB", 1},
-		{"Uncalibrated", 0xFFFF},
-		{}
-	}},
-	{"PixelXDimension", 40962, NULL},
-	{"PixelYDimension", 40963, NULL},
-	{"RelatedSoundFile", 40964, NULL},
-	{"Interoperability IFD Pointer", 40965, NULL},
-	{"FlashEnergy", 41483, NULL},
-	{"SpatialFrequencyResponse", 41484, NULL},
-	{"FocalPlaneXResolution", 41486, NULL},
-	{"FocalPlaneYResolution", 41487, NULL},
-	{"FocalPlaneResolutionUnit", 41488, NULL},
-	{"SubjectLocation", 41492, NULL},
-	{"ExposureIndex", 41493, NULL},
-	{"SensingMethod", 41495, (struct tiff_value[]) {
-		{"Not defined", 1},
-		{"One-chip color area sensor", 2},
-		{"Two-chip color area sensor", 3},
-		{"Three-chip color area sensor", 4},
-		{"Color sequential area sensor", 5},
-		{"Trilinear sensor", 7},
-		{"Color sequential linear sensor", 8},
-		{}
-	}},
-	{"FileSource", 41728, (struct tiff_value[]) {
-		{"Others", 0},
-		{"Scanner of transparent type", 1},
-		{"Scanner of reflex type", 2},
-		{"DSC", 3},
-		{}
-	}},
-	{"SceneType", 41729, (struct tiff_value[]) {
-		{"Directly-photographed image", 1},
-		{}
-	}},
-	{"CFAPattern", 41730, NULL},
-	{"CustomRendered", 41985, (struct tiff_value[]) {
-		{"Normal process", 0},
-		{"Custom process", 1},
-		{}
-	}},
-	{"ExposureMode", 41986, (struct tiff_value[]) {
-		{"Auto exposure", 0},
-		{"Manual exposure", 1},
-		{"Auto bracket", 2},
-		{}
-	}},
-	{"WhiteBalance", 41987, (struct tiff_value[]) {
-		{"Auto white balance", 0},
-		{"Manual white balance", 1},
-		{}
-	}},
-	{"DigitalZoomRatio", 41988, NULL},
-	{"FocalLengthIn35mmFilm", 41989, NULL},
-	{"SceneCaptureType", 41990, (struct tiff_value[]) {
-		{"Standard", 0},
-		{"Landscape", 1},
-		{"Portrait", 2},
-		{"Night scene", 3},
-		{}
-	}},
-	{"GainControl", 41991, (struct tiff_value[]) {
-		{"None", 0},
-		{"Low gain up", 1},
-		{"High gain up", 2},
-		{"Low gain down", 3},
-		{"High gain down", 4},
-		{}
-	}},
-	{"Contrast", 41992, (struct tiff_value[]) {
-		{"Normal", 0},
-		{"Soft", 1},
-		{"Hard", 2},
-		{}
-	}},
-	{"Saturation", 41993, (struct tiff_value[]) {
-		{"Normal", 0},
-		{"Low", 1},
-		{"High", 2},
-		{}
-	}},
-	{"Sharpness", 41994, (struct tiff_value[]) {
-		{"Normal", 0},
-		{"Soft", 1},
-		{"Hard", 2},
-		{}
-	}},
-	{"DeviceSettingDescription", 41995, NULL},
-	{"SubjectDistanceRange", 41996, (struct tiff_value[]) {
-		{"Unknown", 0},
-		{"Macro", 1},
-		{"Close view", 2},
-		{"Distant view", 3},
-		{}
-	}},
-	{"ImageUniqueID", 42016, NULL},
-	{"CameraOwnerName", 42032, NULL},
-	{"BodySerialNumber", 42033, NULL},
-	{"LensSpecification", 42034, NULL},
-	{"LensMake", 42035, NULL},
-	{"LensModel", 42036, NULL},
-	{"LensSerialNumber", 42037, NULL},
-	{"CompositeImage", 42080, NULL},  // 2.32
-	{"SourceImageNumberOfCompositeImage", 42081, NULL},  // 2.32
-	{"SourceExposureTimesOfCompositeImage", 42082, NULL},  // 2.32
-	{"Gamma", 42240, NULL},
-	{}
-};
-
-// Exif 2.3 4.6.6 (Notice it starts at 0.)
-static struct tiff_entry exif_gps_entries[] = {
-	{"GPSVersionID", 0, NULL},
-	{"GPSLatitudeRef", 1, NULL},
-	{"GPSLatitude", 2, NULL},
-	{"GPSLongitudeRef", 3, NULL},
-	{"GPSLongitude", 4, NULL},
-	{"GPSAltitudeRef", 5, (struct tiff_value[]) {
-		{"Sea level", 0},
-		{"Sea level reference (negative value)", 1},
-		{}
-	}},
-	{"GPSAltitude", 6, NULL},
-	{"GPSTimeStamp", 7, NULL},
-	{"GPSSatellites", 8, NULL},
-	{"GPSStatus", 9, NULL},
-	{"GPSMeasureMode", 10, NULL},
-	{"GPSDOP", 11, NULL},
-	{"GPSSpeedRef", 12, NULL},
-	{"GPSSpeed", 13, NULL},
-	{"GPSTrackRef", 14, NULL},
-	{"GPSTrack", 15, NULL},
-	{"GPSImgDirectionRef", 16, NULL},
-	{"GPSImgDirection", 17, NULL},
-	{"GPSMapDatum", 18, NULL},
-	{"GPSDestLatitudeRef", 19, NULL},
-	{"GPSDestLatitude", 20, NULL},
-	{"GPSDestLongitudeRef", 21, NULL},
-	{"GPSDestLongitude", 22, NULL},
-	{"GPSDestBearingRef", 23, NULL},
-	{"GPSDestBearing", 24, NULL},
-	{"GPSDestDistanceRef", 25, NULL},
-	{"GPSDestDistance", 26, NULL},
-	{"GPSProcessingMethod", 27, NULL},
-	{"GPSAreaInformation", 28, NULL},
-	{"GPSDateStamp", 29, NULL},
-	{"GPSDifferential", 30, (struct tiff_value[]) {
-		{"Measurement without differential correction", 0},
-		{"Differential correction applied", 1},
-		{}
-	}},
-	{"GPSHPositioningError", 31, NULL},
-	{}
-};
-
-// Exif 2.3 4.6.7 (Notice it starts at 1, and collides with GPS.)
-static struct tiff_entry exif_interop_entries[] = {
-	{"InteroperabilityIndex", 1, NULL},
-	{}
-};
+#include "tiff-tables.h"
 
 // TODO(p): Consider if these can't be inlined into `tiff_entries`.
 static struct {
@@ -871,7 +370,7 @@ static struct {
 	{330, tiff_entries},   // SubIFDs
 	{34665, exif_entries},  // Exif IFD Pointer
 	{34853, exif_gps_entries},  // GPS Info IFD Pointer
-	{40965, exif_interop_entries},  // Interoperability IFD Pointer
+	{40965, exif_interoperability_entries},  // Interoperability IFD Pointer
 	{}
 };