modem revision 1.1.1.7
1 2 #------------------------------------------------------------------------------ 3 # $File: modem,v 1.11 2022/10/19 20:15:16 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 # http://fileformats.archiveteam.org/wiki/CCITT_Group_3 15 # Reference: https://web.archive.org/web/20020628195336/http://www.netnam.vn/unescocourse/computervision/104.htm 16 # GRR: EOL of G3 is too general as it catches also TrueType fonts, Postscript PrinterFontMetric, others 17 0 short 0x0100 18 # 16 0-bits near beginning like True Type fonts *.ttf, Postscript PrinterFontMetric *.pfm, FTYPE.HYPERCARD, XFER 19 >2 search/9 \0\0 20 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 21 >2 default x 22 # skip IRCAM file (VAX big-endian) ./audio 23 >>0 belong !0x0001a364 24 # skip GEM Image data ./images 25 >>>2 beshort !0x0008 26 # look for first keyword of Panorama database *.pan 27 >>>>11 search/262 \x06DESIGN 28 # skip Panorama database 29 >>>>11 default x 30 # old Apple DreamWorld DreamGrafix *.3200 with keyword at end of g3 looking files 31 >>>>>27118 search/1864 DreamWorld 32 >>>>>27118 default x 33 # skip MouseTrap/Mt.Defaults with file size 16 found on Golden Orchard Apple II CD Rom 34 >>>>>>8 ubequad !0x2e01010454010203 35 # skip PICTUREH.SML found on Golden Orchard Apple II CD Rom 36 >>>>>>>8 ubequad !0x5dee74ad1aa56394 37 # skip few (5/41) DEGAS mid-res bitmap (GEMINI01.PI2 GEMINI02.PI2 GEMINI03.PI2 CODE_RAM.PI2 TBX_DEMO.PI2) 38 # with file size 32034 39 >>>>>>>>-0 offset !32034 raw G3 (Group 3) FAX, byte-padded 40 # version 5.25 labeled the entry above "raw G3 data, byte-padded" 41 !:mime image/g3fax 42 #!:apple ????TIFF 43 !:ext g3 44 # unusual image starting with black pixel 45 #0 short 0x1300 raw G3 (Group 3) FAX 46 0 short 0x1400 47 # 16 0-bits near beginning like PicturePuzzler found on Golden Orchard Apple CD Rom 48 >2 search/9 \0\0 49 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 50 >2 default x 51 # skip some (84/1246) MacBinary II/III (Cyberdog2.068k.smi.bin FileMakerPro4.img.bin Hypercard1.25.image.bin UsbStorage1.3.5.smi.bin) with "non random" numbers by versions values 81h/82h + 81h 52 >>122 ubeshort&0xFcFf !0x8081 raw G3 (Group 3) FAX 53 # version 5.25 labeled the above entry as "raw G3 data" 54 !:mime image/g3fax 55 !:ext g3 56 # unusual image with black pixel near beginning 57 #0 short 0x1900 raw G3 (Group 3) FAX 58 59 # 60 # Magic data for vgetty voice formats 61 # (Martin Seine & Marc Eberhard) 62 63 # 64 # raw modem data version 1 65 # 66 0 string RMD1 raw modem data 67 >4 string >\0 (%s / 68 >20 short >0 compression type %#04x) 69 70 # 71 # portable voice format 1 72 # 73 0 string PVF1\n portable voice format 74 >5 string >\0 (binary %s) 75 76 # 77 # portable voice format 2 78 # 79 0 string PVF2\n portable voice format 80 >5 string >\0 (ascii %s) 81 82 # From: Bernd Nuernberger <bernd.nuernberger (a] web.de> 83 # Brooktrout G3 fax data incl. 128 byte header 84 # Common suffixes: 3??, BRK, BRT, BTR 85 0 leshort 0x01bb 86 >2 leshort 0x0100 Brooktrout 301 fax image, 87 >>9 leshort x %d x 88 >>0x2d leshort x %d 89 >>6 leshort 200 \b, fine resolution 90 >>6 leshort 100 \b, normal resolution 91 >>11 byte 1 \b, G3 compression 92 >>11 byte 2 \b, G32D compression 93
Indexes created Fri May 15 00:25:31 UTC 2026