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+
+#------------------------------------------------------------------------------
+# $File: icc,v 1.7 2021/04/26 15:56:00 christos Exp $
+# icc: file(1) magic for International Color Consortium file formats
+
+#
+# Color profiles as per the ICC's "Image technology colour management -
+# Architecture, profile format, and data structure" specification.
+# See
+#
+# http://www.color.org/specification/ICC1v43_2010-12.pdf
+#
+# for Specification ICC.1:2010 (Profile version 4.3.0.0).
+# URL: http://fileformats.archiveteam.org/wiki/ICC_profile
+# Reference: http://www.color.org/iccmax/ICC.2-2016-7.pdf
+# Update: Joerg Jenderek
+#
+# Bytes 36 to 39 contain a generic profile file signature of "acsp";
+# bytes 40 to 43 "may be used to identify the primary platform/operating
+# system framework for which the profile was created".
+#
+# check and display ICC/ICM color profile
+0 name color-profile
+>36 string acsp
+# skip ASCII like Cognacspirit.txt by month <= 12
+>>26 ubeshort <13
+# platform/operating system. Only 5 mentioned
+
+#
+# This appears to be what's used for Apple ColorSync profiles.
+# Instead of adding that, Apple just changed the generic "acsp" entry
+# to be for "ColorSync ICC Color Profile" rather than "Kodak Color
+# Management System, ICC Profile".
+# Yes, it's "APPL", not "AAPL"; see the spec.
+>>>40 string APPL ColorSync
+
+# Microsoft ICM color profile
+>>>40 string MSFT Microsoft
+
+# Yes, that's a blank after "SGI".
+>>>40 string SGI\ SGI
+
+# XXX - is this what's used for the Sun KCMS or not? The standard file
+# uses just "acsp" for that, but Apple's file uses it for "ColorSync",
+# and there *is* an identified "primary platform" value of SUNW.
+>>>40 string SUNW Sun KCMS
+
+# 5th platform
+>>>40 string TGNT Taligent
+
+# remaining "l" "e" of "color profile" printed later to avoid error
+>>>40 string x color profi
+#>>>40 string x (%.4s)
+!:mime application/vnd.iccprofile
+# for "ICM" extension only versions 2.x and for Kodak "CC" 2.0 is found
+>>>8 ubyte =2
+# do not use empty message text to avoid error like
+# icc, 82: Warning: Current entry does not yet have a description for adding a EXTENSION type
+# file.exe: could not find any valid magic files!
+>>>>9 ubyte !0 \ble
+!:ext icc/icm
+# minor version
+>>>>9 ubyte =0 \bl
+# Kodak colour management system
+>>>>>4 string =KCMS \be
+!:ext icc/icm/cc
+>>>>>4 string !KCMS \be
+!:ext icc/icm
+>>>8 ubyte !2 \ble
+!:ext icc
+# Profile version major.4bit-minor.sub1.sub2 like 4.3.0.0 (04300000h)
+>>>8 ubyte x %u
+>>>9 ubyte/16 x \b.%u
+# reserved and shall be null but 205.205 in umx1220u.icm
+>>>10 ubyte >0 \b.%u
+>>>>11 ubyte >0 \b.%u
+# preferred colour management module like appl CCMS KCMS Lino UCCM "Win " "FF "
+# skip space like in brmsl08f.icm and null like in brmsl09f.icm, brmsl07f.icm
+>>>4 string >\ \b, type %.2s
+>>>>6 string >\ \b%.1s
+>>>>>7 string >\ \b%.1s
+# colour space "XYZ " "Lab " "RGB " CMYK GRAY ...
+>>>16 string x \b, %.3s
+>>>19 string >\ \b%.1s
+# Profile Connection Space (PCS) field usually "XYZ " or "Lab " but sometimes
+# null or CMYK like in ISOcoated_v2_to_PSOcoated_v3_DeviceLink.icc
+>>>20 string >\0 \b/%.3s
+>>>>23 string >\ \b%.1s
+# eleven device classes
+>>>12 string x \b-%.4s device
+# skip 00001964h in hpf69000.icc or 0h in XRDC50Q.ICM or " ROT" in brmsl05f.icm
+>>>52 string >\040
+# skip "none" model like in "Trinitron Compatible 9300K G2.2.icm"
+>>>>52 ubelong !0x6e6f6e65
+# device manufacturer field like "HP " "IBM " EPSO
+>>>>>48 string x \b, %.2s
+>>>>>50 string >\ \b%.1s
+>>>>>51 string >\ \b%.1s
+# model like "ADI " "A265" and skip 20000404h in IS330.icm for RICOH RUSSIAN-SC
+>>>>>52 string >\ \ \b/%.3s
+>>>>>>55 string >\ \b%.1s
+>>>>>52 string x model
+# creator (often same as manufacture) like HP SONY XROX or null like in A925A.icm
+>>>80 string >\0 by %.2s
+>>>>82 string >\ \b%.1s
+>>>>>83 string >\ \b%.1s
+# profile size
+>>>0 ubelong x \b, %u bytes
+# skip invalid date 0 like in linearSRGB.icc
+>>>24 ubequad !0
+# datetime dd-mm-yyyy hh:mm:ss
+>>>>28 ubeshort x \b, %u
+# month <= 12
+>>>>26 ubeshort x \b-%u
+# year
+>>>>24 ubeshort x \b-%u
+# do not display midnight time like in CNHP8308.ICC
+>>>>30 ubequad&0xFFffFFffFFff0000 !0
+# hour <= 24
+>>>>>30 ubeshort x %u
+# minutes <= 59
+>>>>>32 ubeshort x \b:%.2u
+# seconds <= 59
+>>>>>34 ubeshort x \b:%.2u
+# vendor specific flags like 2 in HPCLJ5.ICM
+>>>44 ubeshort >0 \b, %#x vendor flags
+# profile flags bits 0-2 of least 16 used by ICC
+#>>>44 ubelong >0 \b, %#x flags
+# icEmbeddedProfileTrue
+>>>44 ubelong &1 \b, embedded
+# icEmbeddedProfileFalse
+#>>>44 ubelong ^1 \b, not embedded
+# icUseWithEmbeddedDataOnly
+>>>44 ubelong &2 \b, dependently
+# icUseAnywhere
+#>>>44 ubelong ^2 \b, independently
+>>>44 ubelong &4 \b, MCS
+#>>>44 ubelong ^4 \b, no MCS
+# vendor specific device attributes 1~srgb.icc
+# E000D00h~CNB7QEDA.ICM C000A00h~CNB5FCAA.ICM 01040401h~CNB25PE3.ICM
+>>>56 ubelong >0 \b, %#x vendor attribute
+# ICC device attributes bits 0-7 used
+#>>>60 ubelong x \b, %#x attribute
+# http://www.color.org/icc34.h
+>>>60 ubelong &0x01 \b, transparent
+#>>>60 ubelong ^0x01 \b, reflective
+>>>60 ubelong &0x02 \b, matte
+#>>>60 ubelong ^0x02 \b, glossy
+>>>60 ubelong &0x04 \b, negative
+#>>>60 ubelong ^0x04 \b, positive
+>>>60 ubelong &0x08 \b, black&white
+#>>>60 ubelong ^0x08 \b, colour
+>>>60 ubelong &0x10 \b, non-paper
+#>>>60 ubelong ^0x10 \b, paper
+>>>60 ubelong &0x20 \b, non-textured
+#>>>60 ubelong ^0x20 \b, textured
+>>>60 ubelong &0x40 \b, non-isotropic
+#>>>60 ubelong ^0x40 \b, isotropic
+>>>60 ubelong &0x80 \b, self-luminous
+#>>>60 ubelong ^0x80 \b, non-self-luminous
+# rendering intent 0-3 but 7AEA5027h in EE051__1.ICM 6CB1BCh in EE061__1.ICM
+>>>64 ubelong >3 \b, %#x rendering intent
+#>>>64 ubelong =0 \b, perceptual
+>>>64 ubelong =1 \b, relative colorimetric
+>>>64 ubelong =2 \b, saturation
+>>>64 ubelong =3 \b, absolute colorimetric
+# PCS illuminant (3*s15Fixed16Numbers) often 0000f6d6 00010000 0000d32d
+>>>71 ubequad !0xd6000100000000d3 \b, PCS
+# usually X~0.9642*65536=63189.8112~63190=F6D5h ; but also found
+# often F6D6 in gt5000r.icm, F6B8 in kodakce.icm, F6CA in RSWOP.icm
+>>>>68 ubelong !0x0000f6d5 X=%#x
+# usually Y=1.0~00010000h but Y=0 in brmsl07f.icm
+>>>>72 ubelong !0x00010000 Y=%#x
+# usually Z~0.8249*65536=54060.6464~54061=D32Dh ; but also found
+# D2F7 in hp1200c.icm, often D32C in A925A.icm, D309 in RSWOP.icm , D2F8 in kodak_dc.icm
+>>>>76 ubelong !0x0000d32d Z=%#x
+# Profile ID. MD5 fingerprinting method as defined in Internet RFC 1321.
+>>>84 ubequad >0 \b, %#llx MD5
+# reserved in older versions should be zero but also found CDCDCDCDCDCDCDCD
+#>>100 ubequad x \b %#llx reserved
+# tag table
+# 6 <= tags count <= 43
+#>>>128 ubelong >43 \b, %u tags
+>>>128 ubelong x
+# shall contain the profileDescriptionTag "desc" , copyrightTag "cprt"
+# search range = tags count * 12 -8=< maximal tag count * 12 -8= 43 * 12 -8= 508
+>>>>132 search/508 cprt
+# but no copyright tag in linearSRGB.icc
+# beneath /System/Library/Frameworks/WebKit.framework/
+# Versions/A/Frameworks/WebCore.framework/Versions/A/Resources
+>>>>132 default x \b, no copyright tag
+# 1st tag
+#>>>132 string x \b, 1st tag %.4s
+#>>>136 ubelong x %#x offset
+#>>>140 ubelong x %#x len
+# 2nd tag,...
+# look also for profileDescriptionTag "desc"
+>>>132 search/508 desc
+# look further for TextDescriptionType "desc" signature
+>>>>(&0.L) string =desc
+>>>>>&4 pstring/l x "%s"
+# look alternative for multiLocalizedUnicodeType "mluc" signature like in VideoPAL.icc
+>>>>(&0.L) string =mluc
+>>>>>&(&8.L) ubequad x
+>>>>>>&4 bestring16 x '%s'
+
+# Any other profile.
+# XXX - should we use "acsp\0\0\0\0" for "no primary platform" profiles,
+# and use "acsp" for everything else and dump the "primary platform"
+# string in those cases?
+36 string acsp
+>0 use color-profile
+
+