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- #------------------------------------------------------------------------------
- # $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
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