#------------------------------------------------------------------------------ # $File: icc,v 1.5 2017/08/13 00:21:47 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 a 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, 0x%x vendor flags # profile flags bits 0-2 of least 16 used by ICC #>>>44 ubelong >0 \b, 0x%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, 0x%x vendor attribute # ICC device attributes bits 0-7 used #>>>60 ubelong x \b, 0x%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, 0x%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=0x%x # usually Y=1.0~00010000h but Y=0 in brmsl07f.icm >>>>72 ubelong !0x00010000 Y=0x%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=0x%x # Profile ID. MD5 fingerprinting method as defined in Internet RFC 1321. >>>84 ubequad >0 \b, 0x%llx MD5 # reserved in older versions should be zero but also found CDCDCDCDCDCDCDCD #>>100 ubequad x \b 0x%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 0x%x offset #>>>140 ubelong x 0x%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