1 2 #------------------------------------------------------------------------------ 3 # $File: jpeg,v 1.40 2024/11/10 00:26:35 christos Exp $ 4 # JPEG images 5 # SunOS 5.5.1 had 6 # 7 # 0 string \377\330\377\340 JPEG file 8 # 0 string \377\330\377\356 JPG file 9 # 10 # both of which turn into "JPEG image data" here. 11 # 12 0 belong 0xffd8fff7 JPEG-LS image data 13 !:mime image/jls 14 !:ext jls 15 >0 use jpeg 16 17 0 belong&0xffffff00 0xffd8ff00 JPEG image data 18 !:mime image/jpeg 19 !:apple 8BIMJPEG 20 !:strength *3 21 !:ext jpeg/jpg/jpe/jfif 22 >0 use jpeg 23 24 0 name jpeg 25 >6 string JFIF \b, JFIF standard 26 # The following added by Erik Rossen <rossen (a] freesurf.ch> 1999-09-06 27 # in a vain attempt to add image size reporting for JFIF. Note that these 28 # tests are not fool-proof since some perfectly valid JPEGs are currently 29 # impossible to specify in magic(4) format. 30 # First, a little JFIF version info: 31 >>11 byte x \b %d. 32 >>12 byte x \b%02d 33 # Next, the resolution or aspect ratio of the image: 34 >>13 byte 0 \b, aspect ratio 35 >>13 byte 1 \b, resolution (DPI) 36 >>13 byte 2 \b, resolution (DPCM) 37 >>14 ubeshort x \b, density %ux 38 >>16 ubeshort x \b%u 39 >>4 ubeshort x \b, segment length %u 40 # Next, show thumbnail info, if it exists: 41 >>18 byte !0 \b, thumbnail %ux 42 >>>19 byte x \b%u 43 >6 string Exif \b, Exif standard: [ 44 >>12 indirect/r x 45 >>12 string x \b] 46 47 # Jump to the first segment 48 >(4.S+4) use jpeg_segment 49 50 # This uses recursion... 51 0 name jpeg_segment 52 >0 beshort 0xFFFE 53 # Recursion handled by FFE0 54 #>>(2.S+2) use jpeg_segment 55 >>2 pstring/HJ x \b, comment: "%s" 56 57 >0 beshort 0xFFC0 58 >>(2.S+2) use jpeg_segment 59 >>4 byte x \b, baseline, precision %d 60 >>7 ubeshort x \b, %ux 61 >>5 ubeshort x \b%u 62 >>9 byte x \b, components %d 63 64 >0 beshort 0xFFC1 65 >>(2.S+2) use jpeg_segment 66 >>4 byte x \b, extended sequential, precision %d 67 >>7 ubeshort x \b, %ux 68 >>5 ubeshort x \b%u 69 >>9 byte x \b, components %d 70 71 >0 beshort 0xFFC2 72 >>(2.S+2) use jpeg_segment 73 >>4 byte x \b, progressive, precision %d 74 >>7 ubeshort x \b, %ux 75 >>5 ubeshort x \b%u 76 >>9 byte x \b, components %d 77 78 # Define Huffman Tables 79 >0 beshort 0xFFC4 80 >>(2.S+2) use jpeg_segment 81 82 >0 beshort 0xFFE1 83 # Recursion handled by FFE0 84 #>>(2.S+2) use jpeg_segment 85 >>4 string Exif \b, Exif Standard: [ 86 >>>10 indirect/r x 87 >>>10 string x \b] 88 89 # Application specific markers 90 >0 beshort&0xFFE0 =0xFFE0 91 >>(2.S+2) use jpeg_segment 92 93 # DB: Define Quantization tables 94 # DD: Define Restart interval [XXX: wrong here, it is 4 bytes] 95 # D8: Start of image 96 # D9: End of image 97 # Dn: Restart 98 >0 beshort&0xFFD0 =0xFFD0 99 >>0 beshort&0xFFE0 !0xFFE0 100 >>>(2.S+2) use jpeg_segment 101 102 #>0 beshort x unknown %#x 103 #>>(2.S+2) use jpeg_segment 104 105 # HSI is Handmade Software's proprietary JPEG encoding scheme 106 # Update: Joerg Jenderek 107 # URL: http://fileformats.archiveteam.org/wiki/HSI_JPEG 108 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-hsi1.trid.xml 109 # Note: called by TrID "HSI JPEG bitmap" 110 0 string hsi1 JPEG image data, HSI proprietary 111 #!:mime application/octet-stream 112 !:mime image/x-hsi 113 !:ext hsi/jpg 114 115 # From: David Santinoli <david (a] santinoli.com> 116 0 string \x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A JPEG 2000 117 # delete from ./animation (version 1.87) with jP (=6A50h) magic at offset 4 118 # From: Johan van der Knijff <johan.vanderknijff (a] kb.nl> 119 # Added sub-entries for JP2, JPX, JPM and MJ2 formats; added mimetypes 120 # https://github.com/bitsgalore/jp2kMagic 121 # 122 # Now read value of 'Brand' field, which yields a few possibilities: 123 # Update: Joerg Jenderek 124 # URL: http://fileformats.archiveteam.org/wiki/JP2 125 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpeg2k.trid.xml 126 # Note: called by TrID "JPEG 2000 bitmap" 127 >20 string \x6a\x70\x32\x20 Part 1 (JP2) 128 # aliases image/jpeg2000, image/jpeg2000-image, image/x-jpeg2000-image 129 !:mime image/jp2 130 !:ext jp2 131 # URL: http://fileformats.archiveteam.org/wiki/JPX 132 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpx.trid.xml 133 # Note: called by TrID "JPEG 2000 eXtended bitmap" 134 >20 string \x6a\x70\x78\x20 Part 2 (JPX) 135 !:mime image/jpx 136 !:ext jpf/jpx 137 # URL: http://fileformats.archiveteam.org/wiki/JPM 138 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpm.trid.xml 139 # Note: called by TrID "JPEG 2000 eXtended bitmap" 140 >20 string \x6a\x70\x6d\x20 Part 6 (JPM) 141 !:mime image/jpm 142 !:ext jpm 143 # URL: http://fileformats.archiveteam.org/wiki/MJ2 144 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/v/video-mj2.trid.xml 145 # Note: called by TrID "Motion JPEG 2000 video" 146 >20 string \x6d\x6a\x70\x32 Part 3 (MJ2) 147 !:mime video/mj2 148 !:ext mj2/mjp2 149 150 # Type: JPEG 2000 codesream 151 # From: Mathieu Malaterre <mathieu.malaterre (a] gmail.com> 152 # Update: Joerg Jenderek 153 # URL: http://fileformats.archiveteam.org/wiki/JPEG_2000_codestream 154 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpc.trid.xml 155 # Note: called by TrID "JPEG-2000 Code Stream bitmap" 156 0 belong 0xff4fff51 JPEG 2000 codestream 157 # value like: 0701h FF50h 158 #>45 ubeshort x \b, at 45 %#4.4x 159 #!:mime application/octet-stream 160 # https://reposcope.com/mimetype/image/x-jp2-codestream 161 !:mime image/x-jp2-codestream 162 !:ext jpc/j2c/j2k 163 # MAYBE also JHC like in byte_causal.jhc ? 164 # WHAT IS THAT? DEAD ENTRY? 165 #45 beshort 0xff52 166 167 # JPEG extended range 168 # Update: Joerg Jenderek 2023 169 # URL: http://fileformats.archiveteam.org/wiki/JPEG_XR 170 # Reference: https://www.itu.int/rec/T-REC-T.832 171 # http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-wmp.trid.xml 172 # http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jxr.trid.xml 173 # Note: called by TrID "JPEG XR bitmap" and "JPEG XR bitmap (WMPHOTO)" 174 # verified as "JPEG XR" by XnView `nconvert -fullinfo *.jxr *.wdp` 175 # partly by ImageMagick command `identify -verbose *.wdp` 176 # and libjxr-tools `JxrDecApp -v -i example.wdp -o example.tif` 177 0 string \x49\x49\xbc 178 # FILE_VERSION_ID; shall be equal to 1; other values are reserved for future use and are unlike to appear 179 >3 byte 1 180 # FIRST_IFD_OFFSET; shall be an integer multiple of 2; so skip DROID fmt-590-signature-id-931.wdp 181 >>4 lelong%2 0 JPEG-XR Image 182 #!:mime image/vnd.ms-photo 183 !:mime image/jxr 184 # NO example for HDP ! 185 !:ext jxr/wdp/hdp 186 # MAYBE also WMP ? 187 #!:ext jxr/wdp/hdp/wmp 188 # moved from ./images (version 1.243 ) and merged 189 # example: 190 # http://shikino.co.jp/solution/upfile/FLOWER.wdp.zip 191 # often GDI_SIGNATURE "WMPHOTO\0" at offset 90 like: FLOWER.wdp abydos.jxr SMALLTOMATO.wdp 192 >90 bequad 0x574D50484F544F00 193 >>0 use jxr-info 194 # seldom no GDI_SIGNATURE WMPHOTO\0 at offset 90 like: example.wdp MARKET-3361-ipm-bg-DE-treat[1].wdp 195 >90 bequad !0x574D50484F544F00 196 # look for GDI_SIGNATURE WMPHOTO\0 at other offset 197 >>4 search/3267/sb WMPHOTO\0 198 >>>&-90 use jxr-info 199 # 200 0 name jxr-info 201 # check for GDI_SIGNATURE that corresponds to "WMPHOTO\0" 202 >90 bequad 0x574D50484F544F00 203 >>98 byte&0x08 =0x08 \b, hard tiling 204 >>99 byte&0x80 =0x80 \b, tiling present 205 >>99 byte&0x40 =0x40 \b, codestream present 206 >>99 byte&0x38 x \b, spatial xform= 207 >>99 byte&0x38 0x00 \bTL 208 >>99 byte&0x38 0x08 \bBL 209 >>99 byte&0x38 0x10 \bTR 210 >>99 byte&0x38 0x18 \bBR 211 >>99 byte&0x38 0x20 \bBT 212 >>99 byte&0x38 0x28 \bRB 213 >>99 byte&0x38 0x30 \bLT 214 >>99 byte&0x38 0x38 \bLB 215 >>100 byte&0x80 =0x80 \b, short header 216 >>>102 beshort+1 x \b, %u 217 >>>104 beshort+1 x \bx%u 218 >>100 byte&0x80 =0x00 \b, long header 219 >>>102 belong+1 x \b, %x 220 >>>106 belong+1 x \bx%x 221 >>101 beshort&0xf x \b, bitdepth= 222 >>>101 beshort&0xf 0x0 \b1-WHITE=1 223 >>>101 beshort&0xf 0x1 \b8 224 >>>101 beshort&0xf 0x2 \b16 225 >>>101 beshort&0xf 0x3 \b16-SIGNED 226 >>>101 beshort&0xf 0x4 \b16-FLOAT 227 >>>101 beshort&0xf 0x5 \b(reserved 5) 228 >>>101 beshort&0xf 0x6 \b32-SIGNED 229 >>>101 beshort&0xf 0x7 \b32-FLOAT 230 >>>101 beshort&0xf 0x8 \b5 231 >>>101 beshort&0xf 0x9 \b10 232 >>>101 beshort&0xf 0xa \b5-6-5 233 >>>101 beshort&0xf 0xb \b(reserved %d) 234 >>>101 beshort&0xf 0xc \b(reserved %d) 235 >>>101 beshort&0xf 0xd \b(reserved %d) 236 >>>101 beshort&0xf 0xe \b(reserved %d) 237 >>>101 beshort&0xf 0xf \b1-BLACK=1 238 >>101 beshort&0xf0 x \b, colorfmt= 239 >>>101 beshort&0xf0 0x00 \bYONLY 240 >>>101 beshort&0xf0 0x10 \bYUV240 241 >>>101 beshort&0xf0 0x20 \bYWV422 242 >>>101 beshort&0xf0 0x30 \bYWV444 243 >>>101 beshort&0xf0 0x40 \bCMYK 244 >>>101 beshort&0xf0 0x50 \bCMYKDIRECT 245 >>>101 beshort&0xf0 0x60 \bNCOMPONENT 246 >>>101 beshort&0xf0 0x70 \bRGB 247 >>>101 beshort&0xf0 0x80 \bRGBE 248 >>>101 beshort&0xf0 >0x80 \b(reserved %#x) 249 250 # JPEG XL 251 # From: Ian Tester 252 # Update: Joerg Jenderek 253 # URL: http://fileformats.archiveteam.org/wiki/JPEG_XL 254 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jxl.trid.xml 255 # Note: called by TrID "JPEG XL bitmap" 256 0 string \xff\x0a JPEG XL codestream 257 !:mime image/jxl 258 !:ext jxl 259 260 # JPEG XL (transcoded JPEG file) 261 # Update: Joerg Jenderek 262 # URL: http://fileformats.archiveteam.org/wiki/JPEG_XL 263 # Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jxl-iso.trid.xml 264 # Note: called by TrID "JPEG XL bitmap (ISOBMFF)" 265 0 string \x00\x00\x00\x0cJXL\x20\x0d\x0a\x87\x0a JPEG XL container 266 !:mime image/jxl 267 !:ext jxl 268
Indexes created Wed Sep 16 00:24:39 UTC 2026