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Diffstat (limited to 'magic/Magdir/jpeg')
| -rw-r--r-- | magic/Magdir/jpeg | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/magic/Magdir/jpeg b/magic/Magdir/jpeg new file mode 100644 index 0000000..9cebada --- /dev/null +++ b/magic/Magdir/jpeg @@ -0,0 +1,252 @@ + +#------------------------------------------------------------------------------ +# $File: jpeg,v 1.38 2022/12/02 17:42:04 christos Exp $ +# 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 belong 0xffd8fff7 JPEG-LS image data +!:mime image/jls +!:ext jls +>0 use jpeg + +0 belong&0xffffff00 0xffd8ff00 JPEG image data +!:mime image/jpeg +!:apple 8BIMJPEG +!:strength *3 +!:ext jpeg/jpg/jpe/jfif +>0 use jpeg + +0 name jpeg +>6 string JFIF \b, JFIF standard +# The following added by Erik Rossen <rossen@freesurf.ch> 1999-09-06 +# in a vain attempt to add image size reporting for JFIF. Note that these +# tests are not fool-proof since some perfectly valid JPEGs are currently +# impossible to specify in magic(4) format. +# First, a little JFIF version info: +>>11 byte x \b %d. +>>12 byte x \b%02d +# Next, the resolution or aspect ratio of the image: +>>13 byte 0 \b, aspect ratio +>>13 byte 1 \b, resolution (DPI) +>>13 byte 2 \b, resolution (DPCM) +>>14 beshort x \b, density %dx +>>16 beshort x \b%d +>>4 beshort x \b, segment length %d +# Next, show thumbnail info, if it exists: +>>18 byte !0 \b, thumbnail %dx +>>>19 byte x \b%d +>6 string Exif \b, Exif standard: [ +>>12 indirect/r x +>>12 string x \b] + +# Jump to the first segment +>(4.S+4) use jpeg_segment + +# This uses recursion... +0 name jpeg_segment +>0 beshort 0xFFFE +# Recursion handled by FFE0 +#>>(2.S+2) use jpeg_segment +>>2 pstring/HJ x \b, comment: "%s" + +>0 beshort 0xFFC0 +>>(2.S+2) use jpeg_segment +>>4 byte x \b, baseline, precision %d +>>7 beshort x \b, %dx +>>5 beshort x \b%d +>>9 byte x \b, components %d + +>0 beshort 0xFFC1 +>>(2.S+2) use jpeg_segment +>>4 byte x \b, extended sequential, precision %d +>>7 beshort x \b, %dx +>>5 beshort x \b%d +>>9 byte x \b, components %d + +>0 beshort 0xFFC2 +>>(2.S+2) use jpeg_segment +>>4 byte x \b, progressive, precision %d +>>7 beshort x \b, %dx +>>5 beshort x \b%d +>>9 byte x \b, components %d + +# Define Huffman Tables +>0 beshort 0xFFC4 +>>(2.S+2) use jpeg_segment + +>0 beshort 0xFFE1 +# Recursion handled by FFE0 +#>>(2.S+2) use jpeg_segment +>>4 string Exif \b, Exif Standard: [ +>>>10 indirect/r x +>>>10 string x \b] + +# Application specific markers +>0 beshort&0xFFE0 =0xFFE0 +>>(2.S+2) use jpeg_segment + +# DB: Define Quantization tables +# DD: Define Restart interval [XXX: wrong here, it is 4 bytes] +# D8: Start of image +# D9: End of image +# Dn: Restart +>0 beshort&0xFFD0 =0xFFD0 +>>0 beshort&0xFFE0 !0xFFE0 +>>>(2.S+2) use jpeg_segment + +#>0 beshort x unknown %#x +#>>(2.S+2) use jpeg_segment + +# HSI is Handmade Software's proprietary JPEG encoding scheme +# Update: Joerg Jenderek +# URL: http://fileformats.archiveteam.org/wiki/HSI_JPEG +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-hsi1.trid.xml +# Note: called by TrID "HSI JPEG bitmap" +0 string hsi1 JPEG image data, HSI proprietary +#!:mime application/octet-stream +!:mime image/x-hsi +!:ext hsi/jpg + +# From: David Santinoli <david@santinoli.com> +0 string \x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A JPEG 2000 +# delete from ./animation (version 1.87) with jP (=6A50h) magic at offset 4 +# From: Johan van der Knijff <johan.vanderknijff@kb.nl> +# Added sub-entries for JP2, JPX, JPM and MJ2 formats; added mimetypes +# https://github.com/bitsgalore/jp2kMagic +# +# Now read value of 'Brand' field, which yields a few possibilities: +# Update: Joerg Jenderek +# URL: http://fileformats.archiveteam.org/wiki/JP2 +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpeg2k.trid.xml +# Note: called by TrID "JPEG 2000 bitmap" +>20 string \x6a\x70\x32\x20 Part 1 (JP2) +# aliases image/jpeg2000, image/jpeg2000-image, image/x-jpeg2000-image +!:mime image/jp2 +!:ext jp2 +# URL: http://fileformats.archiveteam.org/wiki/JPX +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpx.trid.xml +# Note: called by TrID "JPEG 2000 eXtended bitmap" +>20 string \x6a\x70\x78\x20 Part 2 (JPX) +!:mime image/jpx +!:ext jpf/jpx +# URL: http://fileformats.archiveteam.org/wiki/JPM +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpm.trid.xml +# Note: called by TrID "JPEG 2000 eXtended bitmap" +>20 string \x6a\x70\x6d\x20 Part 6 (JPM) +!:mime image/jpm +!:ext jpm +# URL: http://fileformats.archiveteam.org/wiki/MJ2 +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/v/video-mj2.trid.xml +# Note: called by TrID "Motion JPEG 2000 video" +>20 string \x6d\x6a\x70\x32 Part 3 (MJ2) +!:mime video/mj2 +!:ext mj2/mjp2 + +# Type: JPEG 2000 codesream +# From: Mathieu Malaterre <mathieu.malaterre@gmail.com> +# Update: Joerg Jenderek +# URL: http://fileformats.archiveteam.org/wiki/JPEG_2000_codestream +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jpc.trid.xml +# Note: called by TrID "JPEG-2000 Code Stream bitmap" +0 belong 0xff4fff51 JPEG 2000 codestream +# value like: 0701h FF50h +#>45 ubeshort x \b, at 45 %#4.4x +#!:mime application/octet-stream +# https://reposcope.com/mimetype/image/x-jp2-codestream +!:mime image/x-jp2-codestream +!:ext jpc/j2c/j2k +# MAYBE also JHC like in byte_causal.jhc ? +# WHAT IS THAT? DEAD ENTRY? +#45 beshort 0xff52 + +# JPEG extended range +# URL: http://fileformats.archiveteam.org/wiki/JPEG_XR +# Reference: https://www.itu.int/rec/T-REC-T.832 +# http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-wmp.trid.xml +# Note: called by TrID "JPEG XR bitmap" +0 string \x49\x49\xbc +# FILE_VERSION_ID; shall be equal to 1; other values are reserved for future use +>3 byte 1 +# FIRST_IFD_OFFSET; shall be an integer multiple of 2; so skip DROID fmt-590-signature-id-931.wdp +>>4 lelong%2 0 JPEG-XR +#!:mime image/vnd.ms-photo +!:mime image/jxr +# NO example for HDP ! +!:ext jxr/wdp/hdp +# MAYBE also WMP ? +#!:ext jxr/wdp/hdp/wmp +# moved from ./images (version 1.205 ), merged and +# partly verified by XnView `nconvert -info abydos.jxr FLOWER.wdp` +# example: https://web.archive.org/web/20160403012904/ +# http://shikino.co.jp/solution/upfile/FLOWER.wdp.zip +>90 bequad 0x574D50484F544F00 +>>98 byte&0x08 =0x08 \b, hard tiling +>>99 byte&0x80 =0x80 \b, tiling present +>>99 byte&0x40 =0x40 \b, codestream present +>>99 byte&0x38 x \b, spatial xform= +>>99 byte&0x38 0x00 \bTL +>>99 byte&0x38 0x08 \bBL +>>99 byte&0x38 0x10 \bTR +>>99 byte&0x38 0x18 \bBR +>>99 byte&0x38 0x20 \bBT +>>99 byte&0x38 0x28 \bRB +>>99 byte&0x38 0x30 \bLT +>>99 byte&0x38 0x38 \bLB +>>100 byte&0x80 =0x80 \b, short header +>>>102 beshort+1 x \b, %d +>>>104 beshort+1 x \bx%d +>>100 byte&0x80 =0x00 \b, long header +>>>102 belong+1 x \b, %x +>>>106 belong+1 x \bx%x +>>101 beshort&0xf x \b, bitdepth= +>>>101 beshort&0xf 0x0 \b1-WHITE=1 +>>>101 beshort&0xf 0x1 \b8 +>>>101 beshort&0xf 0x2 \b16 +>>>101 beshort&0xf 0x3 \b16-SIGNED +>>>101 beshort&0xf 0x4 \b16-FLOAT +>>>101 beshort&0xf 0x5 \b(reserved 5) +>>>101 beshort&0xf 0x6 \b32-SIGNED +>>>101 beshort&0xf 0x7 \b32-FLOAT +>>>101 beshort&0xf 0x8 \b5 +>>>101 beshort&0xf 0x9 \b10 +>>>101 beshort&0xf 0xa \b5-6-5 +>>>101 beshort&0xf 0xb \b(reserved %d) +>>>101 beshort&0xf 0xc \b(reserved %d) +>>>101 beshort&0xf 0xd \b(reserved %d) +>>>101 beshort&0xf 0xe \b(reserved %d) +>>>101 beshort&0xf 0xf \b1-BLACK=1 +>>101 beshort&0xf0 x \b, colorfmt= +>>>101 beshort&0xf0 0x00 \bYONLY +>>>101 beshort&0xf0 0x10 \bYUV240 +>>>101 beshort&0xf0 0x20 \bYWV422 +>>>101 beshort&0xf0 0x30 \bYWV444 +>>>101 beshort&0xf0 0x40 \bCMYK +>>>101 beshort&0xf0 0x50 \bCMYKDIRECT +>>>101 beshort&0xf0 0x60 \bNCOMPONENT +>>>101 beshort&0xf0 0x70 \bRGB +>>>101 beshort&0xf0 0x80 \bRGBE +>>>101 beshort&0xf0 >0x80 \b(reserved %#x) + +# JPEG XL +# From: Ian Tester +# Update: Joerg Jenderek +# URL: http://fileformats.archiveteam.org/wiki/JPEG_XL +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jxl.trid.xml +# Note: called by TrID "JPEG XL bitmap" +0 string \xff\x0a JPEG XL codestream +!:mime image/jxl +!:ext jxl + +# JPEG XL (transcoded JPEG file) +# Update: Joerg Jenderek +# URL: http://fileformats.archiveteam.org/wiki/JPEG_XL +# Reference: http://mark0.net/download/triddefs_xml.7z/defs/b/bitmap-jxl-iso.trid.xml +# Note: called by TrID "JPEG XL bitmap (ISOBMFF)" +0 string \x00\x00\x00\x0cJXL\x20\x0d\x0a\x87\x0a JPEG XL container +!:mime image/jxl +!:ext jxl |