modem revision 1.1.1.6
1 2 #------------------------------------------------------------------------------ 3 # $File: modem,v 1.10 2021/04/26 15:56:00 christos Exp $ 4 # modem: file(1) magic for modem programs 5 # 6 # From: Florian La Roche <florian (a] knorke.saar.de> 7 1 string PC\ Research,\ Inc Digifax-G3-File 8 >29 byte 1 \b, fine resolution 9 >29 byte 0 \b, normal resolution 10 11 # Summary: CCITT Group 3 Facsimile in "raw" form (i.e. no header). 12 # Modified by: Joerg Jenderek 13 # URL: https://de.wikipedia.org/wiki/Fax 14 # Reference: https://web.archive.org/web/20020628195336/http://www.netnam.vn/unescocourse/computervision/104.htm 15 # GRR: EOL of G3 is too general as it catches also TrueType fonts, Postscript PrinterFontMetric, others 16 0 short 0x0100 17 # 16 0-bits near beginning like True Type fonts *.ttf, Postscript PrinterFontMetric *.pfm, FTYPE.HYPERCARD, XFER 18 >2 search/9 \0\0 19 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 20 >2 default x 21 # skip IRCAM file (VAX big-endian) ./audio 22 >>0 belong !0x0001a364 23 # skip GEM Image data ./images 24 >>>2 beshort !0x0008 25 # look for first keyword of Panorama database *.pan 26 >>>>11 search/262 \x06DESIGN 27 # skip Panorama database 28 >>>>11 default x 29 # old Apple DreamWorld DreamGrafix *.3200 with keyword at end of g3 looking files 30 >>>>>27118 search/1864 DreamWorld 31 >>>>>27118 default x 32 # skip MouseTrap/Mt.Defaults with file size 16 found on Golden Orchard Apple II CD Rom 33 >>>>>>8 ubequad !0x2e01010454010203 34 # skip PICTUREH.SML found on Golden Orchard Apple II CD Rom 35 >>>>>>>8 ubequad !0x5dee74ad1aa56394 raw G3 (Group 3) FAX, byte-padded 36 # version 5.25 labeled the entry above "raw G3 data, byte-padded" 37 !:mime image/g3fax 38 #!:apple ????TIFF 39 !:ext g3 40 # unusual image starting with black pixel 41 #0 short 0x1300 raw G3 (Group 3) FAX 42 0 short 0x1400 43 # 16 0-bits near beginning like PicturePuzzler found on Golden Orchard Apple CD Rom 44 >2 search/9 \0\0 45 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 46 >2 default x raw G3 (Group 3) FAX 47 # version 5.25 labeled the above entry as "raw G3 data" 48 !:mime image/g3fax 49 !:ext g3 50 # unusual image with black pixel near beginning 51 #0 short 0x1900 raw G3 (Group 3) FAX 52 53 # 54 # Magic data for vgetty voice formats 55 # (Martin Seine & Marc Eberhard) 56 57 # 58 # raw modem data version 1 59 # 60 0 string RMD1 raw modem data 61 >4 string >\0 (%s / 62 >20 short >0 compression type %#04x) 63 64 # 65 # portable voice format 1 66 # 67 0 string PVF1\n portable voice format 68 >5 string >\0 (binary %s) 69 70 # 71 # portable voice format 2 72 # 73 0 string PVF2\n portable voice format 74 >5 string >\0 (ascii %s) 75 76 # From: Bernd Nuernberger <bernd.nuernberger (a] web.de> 77 # Brooktrout G3 fax data incl. 128 byte header 78 # Common suffixes: 3??, BRK, BRT, BTR 79 0 leshort 0x01bb 80 >2 leshort 0x0100 Brooktrout 301 fax image, 81 >>9 leshort x %d x 82 >>0x2d leshort x %d 83 >>6 leshort 200 \b, fine resolution 84 >>6 leshort 100 \b, normal resolution 85 >>11 byte 1 \b, G3 compression 86 >>11 byte 2 \b, G32D compression 87
Indexes created Fri May 15 00:25:31 UTC 2026