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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
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 04:20:09 +0000