projects / apple / file_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 440bd198 A |
1 | |
| 2 | #------------------------------------------------------------------------------ | |
| 3 | # images: file(1) magic for image formats (see also "iff") | |
| 4 | # | |
| 5 | # originally from jef@helios.ee.lbl.gov (Jef Poskanzer), | |
| 6 | # additions by janl@ifi.uio.no as well as others. Jan also suggested | |
| 7 | # merging several one- and two-line files into here. | |
| 8 | # | |
| 9 | # little magic: PCX (first byte is 0x0a) | |
| 10 | # no magic: Targa | |
| 11 | ||
| 12 | # PBMPLUS images | |
| 13 | # The next byte following the magic is always whitespace. | |
| 14 | 0 string P1 PBM image text | |
| 15 | 0 string P2 PGM image text | |
| 16 | 0 string P3 PPM image text | |
| 17 | 0 string P4 PBM "rawbits" image data | |
| 18 | 0 string P5 PGM "rawbits" image data | |
| 19 | 0 string P6 PPM "rawbits" image data | |
| 20 | ||
| 21 | # NIFF (Navy Interchange File Format, a modification of TIFF) images | |
| 22 | 0 string IIN1 NIFF image data | |
| 23 | ||
| 24 | # Tag Image File Format, from Daniel Quinlan (quinlan@yggdrasil.com) | |
| 25 | # The second word of TIFF files is the TIFF version number, 42, which has | |
| 26 | # never changed. The TIFF specification recommends testing for it. | |
| 27 | 0 string MM\x00\x2a TIFF image data, big-endian | |
| 28 | 0 string II\x2a\x00 TIFF image data, little-endian | |
| 29 | ||
| 30 | # PNG [Portable Network Graphics, or "PNG's Not GIF"] images | |
| 31 | # (Greg Roelofs, newt@uchicago.edu) | |
| 32 | # | |
| 33 | # 137 P N G \r \n ^Z \n [4-byte length] H E A D [HEAD data] [HEAD crc] ... | |
| 34 | # | |
| 35 | 0 string \x89PNG PNG image data, | |
| 36 | >4 belong !0x0d0a1a0a CORRUPTED, | |
| 37 | >16 belong x %ld x | |
| 38 | >20 belong x %ld, | |
| 39 | >24 byte x %d-bit | |
| 40 | >25 byte 0 grayscale, | |
| 41 | >25 byte 2 \b/color RGB, | |
| 42 | >25 byte 3 colormap, | |
| 43 | >25 byte 4 gray+alpha, | |
| 44 | >25 byte 6 \b/color RGBA, | |
| 45 | #>26 byte 0 deflate/32K, | |
| 46 | >28 byte 0 non-interlaced | |
| 47 | >28 byte 1 interlaced | |
| 48 | ||
| 49 | # GIF | |
| 50 | 0 string GIF8 GIF image data | |
| 51 | >4 string 7a \b, version 8%s, | |
| 52 | >4 string 9a \b, version 8%s, | |
| 53 | >6 leshort >0 %hd x | |
| 54 | >8 leshort >0 %hd, | |
| 55 | #>10 byte &0x80 color mapped, | |
| 56 | #>10 byte&0x07 =0x00 2 colors | |
| 57 | #>10 byte&0x07 =0x01 4 colors | |
| 58 | #>10 byte&0x07 =0x02 8 colors | |
| 59 | #>10 byte&0x07 =0x03 16 colors | |
| 60 | #>10 byte&0x07 =0x04 32 colors | |
| 61 | #>10 byte&0x07 =0x05 64 colors | |
| 62 | #>10 byte&0x07 =0x06 128 colors | |
| 63 | #>10 byte&0x07 =0x07 256 colors | |
| 64 | ||
| 65 | # ITC (CMU WM) raster files. It is essentially a byte-reversed Sun raster, | |
| 66 | # 1 plane, no encoding. | |
| 67 | 0 string \361\0\100\273 CMU window manager raster image data | |
| 68 | >4 lelong >0 %d x | |
| 69 | >8 lelong >0 %d, | |
| 70 | >12 lelong >0 %d-bit | |
| 71 | ||
| 72 | # Magick Image File Format | |
| 73 | 0 string id=ImageMagick MIFF image data | |
| 74 | ||
| 75 | # Artisan | |
| 76 | 0 long 1123028772 Artisan image data | |
| 77 | >4 long 1 \b, rectangular 24-bit | |
| 78 | >4 long 2 \b, rectangular 8-bit with colormap | |
| 79 | >4 long 3 \b, rectangular 32-bit (24-bit with matte) | |
| 80 | ||
| 81 | # FIG (Facility for Interactive Generation of figures), an object-based format | |
| 82 | 0 string #FIG FIG image text | |
| 83 | >5 string x \b, version %.3s | |
| 84 | ||
| 85 | # PHIGS | |
| 86 | 0 string ARF_BEGARF PHIGS clear text archive | |
| 87 | 0 string @(#)SunPHIGS SunPHIGS | |
| 88 | # version number follows, in the form m.n | |
| 89 | >40 string SunBin binary | |
| 90 | >32 string archive archive | |
| 91 | ||
| 92 | # GKS (Graphics Kernel System) | |
| 93 | 0 string GKSM GKS Metafile | |
| 94 | >24 string SunGKS \b, SunGKS | |
| 95 | ||
| 96 | # CGM image files | |
| 97 | 0 string BEGMF clear text Computer Graphics Metafile | |
| 98 | # XXX - questionable magic | |
| 99 | 0 beshort&0xffe0 0x0020 binary Computer Graphics Metafile | |
| 100 | 0 beshort 0x3020 character Computer Graphics Metafile | |
| 101 | ||
| 102 | # MGR bitmaps (Michael Haardt, u31b3hs@pool.informatik.rwth-aachen.de) | |
| 103 | 0 string yz MGR bitmap, modern format, 8-bit aligned | |
| 104 | 0 string zz MGR bitmap, old format, 1-bit deep, 16-bit aligned | |
| 105 | 0 string xz MGR bitmap, old format, 1-bit deep, 32-bit aligned | |
| 106 | 0 string yx MGR bitmap, modern format, squeezed | |
| 107 | ||
| 108 | # Fuzzy Bitmap (FBM) images | |
| 109 | 0 string %bitmap\0 FBM image data | |
| 110 | >30 long 0x31 \b, mono | |
| 111 | >30 long 0x33 \b, color | |
| 112 | ||
| 113 | # facsimile data | |
| 114 | 1 string PC\ Research,\ Inc group 3 fax data | |
| 115 | >29 byte 0 \b, normal resolution (204x98 DPI) | |
| 116 | >29 byte 1 \b, fine resolution (204x196 DPI) | |
| 117 | ||
| 118 | # JPEG images | |
| 119 | # SunOS 5.5.1 had | |
| 120 | # | |
| 121 | # 0 string \377\330\377\340 JPEG file | |
| 122 | # 0 string \377\330\377\356 JPG file | |
| 123 | # | |
| 124 | # both of which turn into "JPEG image data" here. | |
| 125 | # | |
| 126 | 0 beshort 0xffd8 JPEG image data | |
| 127 | >6 string JFIF \b, JFIF standard | |
| 128 | # HSI is Handmade Software's proprietary JPEG encoding scheme | |
| 129 | 0 string hsi1 JPEG image data, HSI proprietary | |
| 130 | ||
| 131 | # PC bitmaps (OS/2, Windoze BMP files) (Greg Roelofs, newt@uchicago.edu) | |
| 132 | 0 string BM PC bitmap data | |
| 133 | >14 leshort 12 \b, OS/2 1.x format | |
| 134 | >>18 leshort x \b, %d x | |
| 135 | >>20 leshort x %d | |
| 136 | >14 leshort 64 \b, OS/2 2.x format | |
| 137 | >>18 leshort x \b, %d x | |
| 138 | >>20 leshort x %d | |
| 139 | >14 leshort 40 \b, Windows 3.x format | |
| 140 | >>18 lelong x \b, %d x | |
| 141 | >>22 lelong x %d x | |
| 142 | >>28 leshort x %d | |
| 143 | 0 string IC PC icon data | |
| 144 | 0 string PI PC pointer image data | |
| 145 | 0 string CI PC color icon data | |
| 146 | 0 string CP PC color pointer image data | |
| 147 | # Conflicts with other entries [BABYL] | |
| 148 | #0 string BA PC bitmap array data | |
| 149 | ||
| 150 | # XPM icons (Greg Roelofs, newt@uchicago.edu) | |
| 151 | # note possible collision with C/REXX entry in c-lang; currently commented out | |
| 152 | 0 string /*\ XPM\ */ X pixmap image text | |
| 153 | ||
| 154 | # Utah Raster Toolkit RLE images (janl@ifi.uio.no) | |
| 155 | 0 leshort 0xcc52 RLE image data, | |
| 156 | >6 leshort x %d x | |
| 157 | >8 leshort x %d | |
| 158 | >2 leshort >0 \b, lower left corner: %d | |
| 159 | >4 leshort >0 \b, lower right corner: %d | |
| 160 | >10 byte&0x1 =0x1 \b, clear first | |
| 161 | >10 byte&0x2 =0x2 \b, no background | |
| 162 | >10 byte&0x4 =0x4 \b, alpha channel | |
| 163 | >10 byte&0x8 =0x8 \b, comment | |
| 164 | >11 byte >0 \b, %d color channels | |
| 165 | >12 byte >0 \b, %d bits per pixel | |
| 166 | >13 byte >0 \b, %d color map channels | |
| 167 | ||
| 168 | # image file format (Robert Potter, potter@cs.rochester.edu) | |
| 169 | 0 string Imagefile\ version- iff image data | |
| 170 | # this adds the whole header (inc. version number), informative but longish | |
| 171 | >10 string >\0 %s | |
| 172 | ||
| 173 | # Sun raster images, from Daniel Quinlan (quinlan@yggdrasil.com) | |
| 174 | 0 belong 0x59a66a95 Sun raster image data | |
| 175 | >4 belong >0 \b, %d x | |
| 176 | >8 belong >0 %d, | |
| 177 | >12 belong >0 %d-bit, | |
| 178 | #>16 belong >0 %d bytes long, | |
| 179 | >20 belong 0 old format, | |
| 180 | #>20 belong 1 standard, | |
| 181 | >20 belong 2 compressed, | |
| 182 | >20 belong 3 RGB, | |
| 183 | >20 belong 4 TIFF, | |
| 184 | >20 belong 5 IFF, | |
| 185 | >20 belong 0xffff reserved for testing, | |
| 186 | >24 belong 0 no colormap | |
| 187 | >24 belong 1 RGB colormap | |
| 188 | >24 belong 2 raw colormap | |
| 189 | #>28 belong >0 colormap is %d bytes long | |
| 190 | ||
| 191 | # SGI image file format, from Daniel Quinlan (quinlan@yggdrasil.com) | |
| 192 | # file://sgi.com/graphics/SGIIMAGESPEC | |
| 193 | 0 beshort 474 SGI image data | |
| 194 | #>2 byte 0 \b, verbatim | |
| 195 | >2 byte 1 \b, RLE | |
| 196 | #>3 byte 1 \b, normal precision | |
| 197 | >3 byte 2 \b, high precision | |
| 198 | >4 beshort x \b, %d-D | |
| 199 | >6 beshort x \b, %d x | |
| 200 | >8 beshort x %d | |
| 201 | >10 beshort x \b, %d channel | |
| 202 | >10 beshort !1 \bs | |
| 203 | >80 string >0 \b, "%s" | |
| 204 | ||
| 205 | 0 string IT01 FIT image data | |
| 206 | >4 belong x \b, %d x | |
| 207 | >8 belong x %d x | |
| 208 | >12 belong x %d | |
| 209 | # | |
| 210 | 0 string IT02 FIT image data | |
| 211 | >4 belong x \b, %d x | |
| 212 | >8 belong x %d x | |
| 213 | >12 belong x %d | |
| 214 | # | |
| 215 | 2048 string PCD_IPI Kodak Photo CD image pack file | |
| 216 | 0 string PCD_OPA Kodak Photo CD overview pack file | |
| 217 | ||
| 218 | # FITS format. Jeff Uphoff <juphoff@tarsier.cv.nrao.edu> | |
| 219 | # FITS is the Flexible Image Transport System, the de facto standard for | |
| 220 | # data and image transfer, storage, etc., for the astronomical community. | |
| 221 | # (FITS floating point formats are big-endian.) | |
| 222 | 0 string SIMPLE\ \ = FITS image data | |
| 223 | >109 string 8 \b, 8-bit, character or unsigned binary integer | |
| 224 | >108 string 16 \b, 16-bit, two's complement binary integer | |
| 225 | >107 string \ 32 \b, 32-bit, two's complement binary integer | |
| 226 | >107 string -32 \b, 32-bit, floating point, single precision | |
| 227 | >107 string -64 \b, 64-bit, floating point, double precision | |
| 228 | ||
| 229 | # other images | |
| 230 | 0 string This\ is\ a\ BitMap\ file Lisp Machine bit-array-file | |
| 231 | 0 string !! Bennet Yee's "face" format | |
| 232 | ||
| 233 | # From SunOS 5.5.1 "/etc/magic" - appeared right before Sun raster image | |
| 234 | # stuff. | |
| 235 | # | |
| 236 | 0 beshort 0x1010 PEX Binary Archive |