#------------------------------------------------------------------------------ # $File: modem,v 1.8 2017/03/17 21:35:28 christos Exp $ # modem: file(1) magic for modem programs # # From: Florian La Roche <florian@knorke.saar.de> 1 string PC\ Research,\ Inc Digifax-G3-File >29 byte 1 \b, fine resolution >29 byte 0 \b, normal resolution # Summary: CCITT Group 3 Facsimile in "raw" form (i.e. no header). # Modified by: Joerg Jenderek # URL: https://de.wikipedia.org/wiki/Fax # Reference: http://web.archive.org/web/20020628195336/http://www.netnam.vn/unescocourse/computervision/104.htm # GRR: EOL of G3 is too general as it catches also TrueType fonts, Postscript PrinterFontMetric, others 0 short 0x0100 # 16 0-bits near beginning like True Type fonts *.ttf, Postscript PrinterFontMetric *.pfm, FTYPE.HYPERCARD, XFER >2 search/9 \0\0 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 >2 default x # skip IRCAM file (VAX big-endian) ./audio >>0 belong !0x0001a364 # skip GEM Image data ./images >>>2 beshort !0x0008 # look for first keyword of Panorama database *.pan >>>>11 search/262 \x06DESIGN # skip Panorama database >>>>11 default x # old Apple DreamWorld DreamGrafix *.3200 with keyword at end of g3 looking files >>>>>27118 search/1864 DreamWorld >>>>>27118 default x # skip MouseTrap/Mt.Defaults with file size 16 found on Golden Orchard Apple II CD Rom >>>>>>8 ubequad !0x2e01010454010203 # skip PICTUREH.SML found on Golden Orchard Apple II CD Rom >>>>>>>8 ubequad !0x5dee74ad1aa56394 raw G3 (Group 3) FAX, byte-padded # version 5.25 labeled the entry above "raw G3 data, byte-padded" !:mime image/g3fax #!:apple ????TIFF !:ext g3 # unusual image starting with black pixel #0 short 0x1300 raw G3 (Group 3) FAX 0 short 0x1400 # 16 0-bits near beginning like PicturePuzzler found on Golden Orchard Apple CD Rom >2 search/9 \0\0 # maximal 7 0-bits for pixel sequences or 11 0-bits for EOL in G3 >2 default x raw G3 (Group 3) FAX # version 5.25 labeled the above entry as "raw G3 data" !:mime image/g3fax !:ext g3 # unusual image with black pixel near beginning #0 short 0x1900 raw G3 (Group 3) FAX # # Magic data for vgetty voice formats # (Martin Seine & Marc Eberhard) # # raw modem data version 1 # 0 string RMD1 raw modem data >4 string >\0 (%s / >20 short >0 compression type 0x%04x) # # portable voice format 1 # 0 string PVF1\n portable voice format >5 string >\0 (binary %s) # # portable voice format 2 # 0 string PVF2\n portable voice format >5 string >\0 (ascii %s) # From: Bernd Nuernberger <bernd.nuernberger@web.de> # Brooktrout G3 fax data incl. 128 byte header # Common suffixes: 3??, BRK, BRT, BTR 0 leshort 0x01bb >2 leshort 0x0100 Brooktrout 301 fax image, >>9 leshort x %d x >>0x2d leshort x %d >>6 leshort 200 \b, fine resolution >>6 leshort 100 \b, normal resolution >>11 byte 1 \b, G3 compression >>11 byte 2 \b, G32D compression