#------------------------------------------------------------------------------ # images: file(1) magic for image formats (see also "iff") # # originally from jef@helios.ee.lbl.gov (Jef Poskanzer), # additions by janl@ifi.uio.no as well as others. Jan also suggested # merging several one- and two-line files into here. # # little magic: PCX (first byte is 0x0a) # Targa - matches `povray', `ppmtotga' and `xv' outputs # by Philippe De Muyter # at 2, byte ImgType must be 1, 2, 3, 9, 10 or 11 # at 1, byte CoMapType must be 1 if ImgType is 1 or 9, 0 otherwise # at 3, leshort Index is 0 for povray, ppmtotga and xv outputs # `xv' recognizes only a subset of the following (RGB with pixelsize = 24) # `tgatoppm' recognizes a superset (Index may be anything) 1 belong&0xfff7ffff 0x01010000 Targa image data - Map >2 byte&8 8 - RLE 1 belong&0xfff7ffff 0x00020000 Targa image data - RGB >2 byte&8 8 - RLE 1 belong&0xfff7ffff 0x00030000 Targa image data - Mono >2 byte&8 8 - RLE # PBMPLUS images # The next byte following the magic is always whitespace. 0 string P1 Netpbm PBM image text 0 string P2 Netpbm PGM image text 0 string P3 Netpbm PPM image text 0 string P4 Netpbm PBM "rawbits" image data 0 string P5 Netpbm PGM "rawbits" image data 0 string P6 Netpbm PPM "rawbits" image data 0 string P7 Netpbm PAM image file # From: bryanh@giraffe-data.com (Bryan Henderson) 0 string \117\072 Solitaire Image Recorder format >4 string \013 MGI Type 11 >4 string \021 MGI Type 17 0 string .MDA MicroDesign data >21 byte 48 version 2 >21 byte 51 version 3 0 string .MDP MicroDesign page data >21 byte 48 version 2 >21 byte 51 version 3 # NIFF (Navy Interchange File Format, a modification of TIFF) images 0 string IIN1 NIFF image data # Tag Image File Format, from Daniel Quinlan (quinlan@yggdrasil.com) # The second word of TIFF files is the TIFF version number, 42, which has # never changed. The TIFF specification recommends testing for it. 0 string MM\x00\x2a TIFF image data, big-endian 0 string II\x2a\x00 TIFF image data, little-endian # PNG [Portable Network Graphics, or "PNG's Not GIF"] images # (Greg Roelofs, newt@uchicago.edu) # (Albert Cahalan, acahalan@cs.uml.edu) # # 137 P N G \r \n ^Z \n [4-byte length] H E A D [HEAD data] [HEAD crc] ... # 0 string \x89PNG PNG image data, >4 belong !0x0d0a1a0a CORRUPTED, >4 belong 0x0d0a1a0a >>16 belong x %ld x >>20 belong x %ld, >>24 byte x %d-bit >>25 byte 0 grayscale, >>25 byte 2 \b/color RGB, >>25 byte 3 colormap, >>25 byte 4 gray+alpha, >>25 byte 6 \b/color RGBA, #>>26 byte 0 deflate/32K, >>28 byte 0 non-interlaced >>28 byte 1 interlaced 1 string PNG PNG image data, CORRUPTED # GIF 0 string GIF8 GIF image data >4 string 7a \b, version 8%s, >4 string 9a \b, version 8%s, >6 leshort >0 %hd x >8 leshort >0 %hd, #>10 byte &0x80 color mapped, #>10 byte&0x07 =0x00 2 colors #>10 byte&0x07 =0x01 4 colors #>10 byte&0x07 =0x02 8 colors #>10 byte&0x07 =0x03 16 colors #>10 byte&0x07 =0x04 32 colors #>10 byte&0x07 =0x05 64 colors #>10 byte&0x07 =0x06 128 colors #>10 byte&0x07 =0x07 256 colors # ITC (CMU WM) raster files. It is essentially a byte-reversed Sun raster, # 1 plane, no encoding. 0 string \361\0\100\273 CMU window manager raster image data >4 lelong >0 %d x >8 lelong >0 %d, >12 lelong >0 %d-bit # Magick Image File Format 0 string id=ImageMagick MIFF image data # Artisan 0 long 1123028772 Artisan image data >4 long 1 \b, rectangular 24-bit >4 long 2 \b, rectangular 8-bit with colormap >4 long 3 \b, rectangular 32-bit (24-bit with matte) # FIG (Facility for Interactive Generation of figures), an object-based format 0 string #FIG FIG image text >5 string x \b, version %.3s # PHIGS 0 string ARF_BEGARF PHIGS clear text archive 0 string @(#)SunPHIGS SunPHIGS # version number follows, in the form m.n >40 string SunBin binary >32 string archive archive # GKS (Graphics Kernel System) 0 string GKSM GKS Metafile >24 string SunGKS \b, SunGKS # CGM image files 0 string BEGMF clear text Computer Graphics Metafile # XXX - questionable magic 0 beshort&0xffe0 0x0020 binary Computer Graphics Metafile 0 beshort 0x3020 character Computer Graphics Metafile # MGR bitmaps (Michael Haardt, u31b3hs@pool.informatik.rwth-aachen.de) 0 string yz MGR bitmap, modern format, 8-bit aligned 0 string zz MGR bitmap, old format, 1-bit deep, 16-bit aligned 0 string xz MGR bitmap, old format, 1-bit deep, 32-bit aligned 0 string yx MGR bitmap, modern format, squeezed # Fuzzy Bitmap (FBM) images 0 string %bitmap\0 FBM image data >30 long 0x31 \b, mono >30 long 0x33 \b, color # facsimile data 1 string PC\ Research,\ Inc group 3 fax data >29 byte 0 \b, normal resolution (204x98 DPI) >29 byte 1 \b, fine resolution (204x196 DPI) # PC bitmaps (OS/2, Windoze BMP files) (Greg Roelofs, newt@uchicago.edu) 0 string BM PC bitmap data >14 leshort 12 \b, OS/2 1.x format >>18 leshort x \b, %d x >>20 leshort x %d >14 leshort 64 \b, OS/2 2.x format >>18 leshort x \b, %d x >>20 leshort x %d >14 leshort 40 \b, Windows 3.x format >>18 lelong x \b, %d x >>22 lelong x %d x >>28 leshort x %d 0 string IC PC icon data 0 string PI PC pointer image data 0 string CI PC color icon data 0 string CP PC color pointer image data # Conflicts with other entries [BABYL] #0 string BA PC bitmap array data # XPM icons (Greg Roelofs, newt@uchicago.edu) # note possible collision with C/REXX entry in c-lang; currently commented out 0 string /*\ XPM\ */ X pixmap image text # Utah Raster Toolkit RLE images (janl@ifi.uio.no) 0 leshort 0xcc52 RLE image data, >6 leshort x %d x >8 leshort x %d >2 leshort >0 \b, lower left corner: %d >4 leshort >0 \b, lower right corner: %d >10 byte&0x1 =0x1 \b, clear first >10 byte&0x2 =0x2 \b, no background >10 byte&0x4 =0x4 \b, alpha channel >10 byte&0x8 =0x8 \b, comment >11 byte >0 \b, %d color channels >12 byte >0 \b, %d bits per pixel >13 byte >0 \b, %d color map channels # image file format (Robert Potter, potter@cs.rochester.edu) 0 string Imagefile\ version- iff image data # this adds the whole header (inc. version number), informative but longish >10 string >\0 %s # Sun raster images, from Daniel Quinlan (quinlan@yggdrasil.com) 0 belong 0x59a66a95 Sun raster image data >4 belong >0 \b, %d x >8 belong >0 %d, >12 belong >0 %d-bit, #>16 belong >0 %d bytes long, >20 belong 0 old format, #>20 belong 1 standard, >20 belong 2 compressed, >20 belong 3 RGB, >20 belong 4 TIFF, >20 belong 5 IFF, >20 belong 0xffff reserved for testing, >24 belong 0 no colormap >24 belong 1 RGB colormap >24 belong 2 raw colormap #>28 belong >0 colormap is %d bytes long # SGI image file format, from Daniel Quinlan (quinlan@yggdrasil.com) # # See # http://reality.sgi.com/grafica/sgiimage.html # 0 beshort 474 SGI image data #>2 byte 0 \b, verbatim >2 byte 1 \b, RLE #>3 byte 1 \b, normal precision >3 byte 2 \b, high precision >4 beshort x \b, %d-D >6 beshort x \b, %d x >8 beshort x %d >10 beshort x \b, %d channel >10 beshort !1 \bs >80 string >0 \b, "%s" 0 string IT01 FIT image data >4 belong x \b, %d x >8 belong x %d x >12 belong x %d # 0 string IT02 FIT image data >4 belong x \b, %d x >8 belong x %d x >12 belong x %d # 2048 string PCD_IPI Kodak Photo CD image pack file 0 string PCD_OPA Kodak Photo CD overview pack file # FITS format. Jeff Uphoff # FITS is the Flexible Image Transport System, the de facto standard for # data and image transfer, storage, etc., for the astronomical community. # (FITS floating point formats are big-endian.) 0 string SIMPLE\ \ = FITS image data >109 string 8 \b, 8-bit, character or unsigned binary integer >108 string 16 \b, 16-bit, two's complement binary integer >107 string \ 32 \b, 32-bit, two's complement binary integer >107 string -32 \b, 32-bit, floating point, single precision >107 string -64 \b, 64-bit, floating point, double precision # other images 0 string This\ is\ a\ BitMap\ file Lisp Machine bit-array-file 0 string !! Bennet Yee's "face" format # From SunOS 5.5.1 "/etc/magic" - appeared right before Sun raster image # stuff. # 0 beshort 0x1010 PEX Binary Archive # Visio drawings 03000 string Visio\ (TM)\ Drawing %s # Tgif files 0 string \%TGIF\ x Tgif file version %s # DICOM medical imaging data 128 string DICM DICOM medical imaging data # XWD - X-Windows Dump file. # As described in /usr/X11R6/include/X11/XWDFile.h # used by the xwd program. # Bradford Castalia, idaeim, 1/01 4 belong 7 XWD X-Widows Dump image data >100 string >\0 \b, "%s" >16 belong x \b, %dx >20 belong x \b%dx >12 belong x \b%d # PDS - Planetary Data System # These files use Parameter Value Language in the header section. # Unfortunately, there is no certain magic, but the following # strings have been found to be most likely. 0 string NJPL1I00 PDS (JPL) image data 2 string NJPL1I PDS (JPL) image data 0 string CCSD3ZF PDS (CCSD) image data 2 string CCSD3Z PDS (CCSD) image data 0 string PDS_ PDS image data 0 string LBLSIZE= PDS (VICAR) image data 0 string GSTIm GNU SmallTalk image file # pM8x: ATARI STAD compressed bitmap format # # from Oskar Schirmer Feb 2, 2001 # p M 8 5/6 xx yy zz data... # Atari ST STAD bitmap is always 640x400, bytewise runlength compressed. # bytes either run horizontally (pM85) or vertically (pM86). yy is the # most frequent byte, xx and zz are runlength escape codes, where xx is # used for runs of yy. # 0 string pM85 Atari ST STAD bitmap image data (hor) >5 byte 0x00 (white background) >5 byte 0xFF (black background) 0 string pM86 Atari ST STAD bitmap image data (vert) >5 byte 0x00 (white background) >5 byte 0xFF (black background)
