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#------------------------------------------------------------------------------
# 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 <phdm@macqel.be>
# 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 PBM image text
0 string P2 PGM image text
0 string P3 PPM image text
0 string P4 PBM "rawbits" image data
0 string P5 PGM "rawbits" image data
0 string P6 PPM "rawbits" image data
# 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
# JPEG images
# SunOS 5.5.1 had
#
# 0 string \377\330\377\340 JPEG file
# 0 string \377\330\377\356 JPG file
#
# both of which turn into "JPEG image data" here.
#
0 beshort 0xffd8 JPEG image data
>6 string JFIF \b, JFIF standard
# HSI is Handmade Software's proprietary JPEG encoding scheme
0 string hsi1 JPEG image data, HSI proprietary
# 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 <juphoff@tarsier.cv.nrao.edu>
# 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
|
