225 lines
7.1 KiB
Plaintext
225 lines
7.1 KiB
Plaintext
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#------------------------------------------------------------------------------
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# images: file(1) magic for image formats (see also "iff")
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#
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# originally from jef@helios.ee.lbl.gov (Jef Poskanzer),
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# additions by janl@ifi.uio.no as well as others. Jan also suggested
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# merging several one- and two-line files into here.
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#
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# little magic: PCX (first byte is 0x0a)
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# no magic: Targa
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# PBMPLUS images
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# The next byte following the magic is always whitespace.
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0 string P1 PBM image text
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0 string P2 PGM image text
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0 string P3 PPM image text
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0 string P4 PBM "rawbits" image data
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0 string P5 PGM "rawbits" image data
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0 string P6 PPM "rawbits" image data
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# NIFF (Navy Interchange File Format, a modification of TIFF) images
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0 string IIN1 NIFF image data
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# Tag Image File Format, from Daniel Quinlan (quinlan@yggdrasil.com)
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# The second word of TIFF files is the TIFF version number, 42, which has
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# never changed. The TIFF specification recommends testing for it.
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0 string MM\x00\x2a TIFF image data, big-endian
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0 string II\x2a\x00 TIFF image data, little-endian
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# PNG [Portable Network Graphics, or "PNG's Not GIF"] images
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# (Greg Roelofs, newt@uchicago.edu)
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#
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# 137 P N G \r \n ^Z \n [4-byte length] H E A D [HEAD data] [HEAD crc] ...
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#
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0 string \x89PNG PNG image data,
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>4 belong !0x0d0a1a0a CORRUPTED,
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>16 belong x %ld x
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>20 belong x %ld,
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>24 byte x %d-bit
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>25 byte 0 grayscale,
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>25 byte 2 \b/color RGB,
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>25 byte 3 colormap,
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>25 byte 4 gray+alpha,
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>25 byte 6 \b/color RGBA,
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#>26 byte 0 deflate/32K,
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>28 byte 0 non-interlaced
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>28 byte 1 interlaced
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# GIF
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0 string GIF8 GIF image data
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>4 string 7a \b, version 8%s,
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>4 string 9a \b, version 8%s,
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>6 leshort >0 %hd x
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>8 leshort >0 %hd,
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#>10 byte &0x80 color mapped,
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>10 byte&0x07 =0x00 2 colors
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>10 byte&0x07 =0x01 4 colors
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>10 byte&0x07 =0x02 8 colors
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>10 byte&0x07 =0x03 16 colors
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>10 byte&0x07 =0x04 32 colors
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>10 byte&0x07 =0x05 64 colors
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>10 byte&0x07 =0x06 128 colors
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>10 byte&0x07 =0x07 256 colors
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# ITC (CMU WM) raster files. It is essentially a byte-reversed Sun raster,
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# 1 plane, no encoding.
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0 string \361\0\100\273 CMU window manager raster image data
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>4 lelong >0 %d x
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>8 lelong >0 %d,
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>12 lelong >0 %d-bit
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# Magick Image File Format
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0 string id=ImageMagick MIFF image data
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# Artisan
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0 long 1123028772 Artisan image data
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>4 long 1 \b, rectangular 24-bit
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>4 long 2 \b, rectangular 8-bit with colormap
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>4 long 3 \b, rectangular 32-bit (24-bit with matte)
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# FIG (Facility for Interactive Generation of figures), an object-based format
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0 string #FIG FIG image text
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>5 string x \b, version %.3s
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# PHIGS
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0 string ARF_BEGARF PHIGS clear text archive
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0 string @(#)SunPHIGS SunPHIGS
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# version number follows, in the form m.n
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>40 string SunBin binary
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>32 string archive archive
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# GKS (Graphics Kernel System)
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0 string GKSM GKS Metafile
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>24 string SunGKS \b, SunGKS
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# CGM image files
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0 string BEGMF clear text Computer Graphics Metafile
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# XXX - questionable magic
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0 beshort&0xffe0 0x0020 binary Computer Graphics Metafile
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0 beshort 0x3020 character Computer Graphics Metafile
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# MGR bitmaps (Michael Haardt, u31b3hs@pool.informatik.rwth-aachen.de)
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0 string yz MGR bitmap, modern format, 8-bit aligned
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0 string zz MGR bitmap, old format, 1-bit deep, 16-bit aligned
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0 string xz MGR bitmap, old format, 1-bit deep, 32-bit aligned
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0 string yx MGR bitmap, modern format, squeezed
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# Fuzzy Bitmap (FBM) images
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0 string %bitmap\0 FBM image data
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>30 long 0x31 \b, mono
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>30 long 0x33 \b, color
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# facsimile data
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1 string PC\ Research,\ Inc group 3 fax data
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>29 byte 0 \b, normal resolution (204x98 DPI)
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>29 byte 1 \b, fine resolution (204x196 DPI)
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# JPEG images
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0 beshort 0xffd8 JPEG image data
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>6 string JFIF \b, JFIF standard
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# HSI is Handmade Software's proprietary JPEG encoding scheme
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0 string hsi1 JPEG image data, HSI proprietary
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# PC bitmaps (OS/2, Windoze BMP files) (Greg Roelofs, newt@uchicago.edu)
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0 string BM PC bitmap data
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>14 leshort 12 \b, OS/2 1.x format
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>>18 leshort x \b, %d x
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>>20 leshort x %d
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>14 leshort 64 \b, OS/2 2.x format
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>>18 leshort x \b, %d x
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>>20 leshort x %d
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>14 leshort 40 \b, Windows 3.x format
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>>18 lelong x \b, %d x
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>>22 lelong x %d x
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>>28 leshort x %d
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0 string IC PC icon data
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0 string PI PC pointer image data
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0 string CI PC color icon data
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0 string CP PC color pointer image data
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# Conflicts with other entries [BABYL]
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#0 string BA PC bitmap array data
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# XPM icons (Greg Roelofs, newt@uchicago.edu)
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# note possible collision with C/REXX entry in c-lang; currently commented out
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0 string /*\ XPM\ */ X pixmap image text
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# Utah Raster Toolkit RLE images (janl@ifi.uio.no)
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0 leshort 0xcc52 RLE image data,
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>6 leshort x %d x
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>8 leshort x %d
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>2 leshort >0 \b, lower left corner: %d
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>4 leshort >0 \b, lower right corner: %d
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>10 byte&0x1 =0x1 \b, clear first
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>10 byte&0x2 =0x2 \b, no background
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>10 byte&0x4 =0x4 \b, alpha channel
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>10 byte&0x8 =0x8 \b, comment
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>11 byte >0 \b, %d color channels
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>12 byte >0 \b, %d bits per pixel
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>13 byte >0 \b, %d color map channels
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# image file format (Robert Potter, potter@cs.rochester.edu)
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0 string Imagefile\ version- iff image data
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# this adds the whole header (inc. version number), informative but longish
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>10 string >\0 %s
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# Sun raster images, from Daniel Quinlan (quinlan@yggdrasil.com)
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0 belong 0x59a66a95 Sun raster image data
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>4 belong >0 \b, %d x
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>8 belong >0 %d,
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>12 belong >0 %d-bit,
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#>16 belong >0 %d bytes long,
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>20 belong 0 old format,
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#>20 belong 1 standard,
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>20 belong 2 compressed,
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>20 belong 3 RGB,
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>20 belong 4 TIFF,
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>20 belong 5 IFF,
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>20 belong 0xffff reserved for testing,
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>24 belong 0 no colormap
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>24 belong 1 RGB colormap
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>24 belong 2 raw colormap
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#>28 belong >0 colormap is %d bytes long
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# SGI image file format, from Daniel Quinlan (quinlan@yggdrasil.com)
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# file://sgi.com/graphics/SGIIMAGESPEC
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0 beshort 474 SGI image data
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#>2 byte 0 \b, verbatim
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>2 byte 1 \b, RLE
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#>3 byte 1 \b, normal precision
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>3 byte 2 \b, high precision
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>4 beshort x \b, %d-D
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>6 beshort x \b, %d x
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>8 beshort x %d
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>10 beshort x \b, %d channel
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>10 beshort !1 \bs
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>80 string >0 \b, "%s"
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0 string IT01 FIT image data
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>4 belong x \b, %d x
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>8 belong x %d x
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>12 belong x %d
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#
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0 string IT02 FIT image data
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>4 belong x \b, %d x
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>8 belong x %d x
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>12 belong x %d
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#
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2048 string PCD_IPI Kodak Photo CD image pack file
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0 string PCD_OPA Kodak Photo CD overview pack file
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# FITS format. Jeff Uphoff <juphoff@tarsier.cv.nrao.edu>
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# FITS is the Flexible Image Transport System, the de facto standard for
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# data and image transfer, storage, etc., for the astronomical community.
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# (FITS floating point formats are big-endian.)
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0 string SIMPLE\ \ = FITS image data
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>109 string 8 \b, 8-bit, character or unsigned binary integer
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>108 string 16 \b, 16-bit, two's complement binary integer
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>107 string \ 32 \b, 32-bit, two's complement binary integer
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>107 string -32 \b, 32-bit, floating point, single precision
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>107 string -64 \b, 64-bit, floating point, double precision
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# other images
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0 string This\ is\ a\ BitMap\ file Lisp Machine bit-array-file
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0 string !! Bennet Yee's "face" format
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