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