#------------------------------------------------------------------------------ # audio: file(1) magic for sound formats (see also "iff") # # Jan Nicolai Langfeldt (janl@ifi.uio.no), Dan Quinlan (quinlan@yggdrasil.com), # and others # # Sun/NeXT audio data 0 string .snd Sun/NeXT audio data: >12 belong 1 8-bit ISDN u-law, >12 belong 2 8-bit linear PCM [REF-PCM], >12 belong 3 16-bit linear PCM, >12 belong 4 24-bit linear PCM, >12 belong 5 32-bit linear PCM, >12 belong 6 32-bit IEEE floating point, >12 belong 7 64-bit IEEE floating point, >12 belong 23 8-bit ISDN u-law compressed (CCITT G.721 ADPCM voice data encoding), >12 belong 24 compressed (8-bit G.722 ADPCM) >12 belong 25 compressed (3-bit G.723 ADPCM), >12 belong 26 compressed (5-bit G.723 ADPCM), >12 belong 27 8-bit A-law, >20 belong 1 mono, >20 belong 2 stereo, >20 belong 4 quad, >16 belong >0 %d Hz # DEC systems (e.g. DECstation 5000) use a variant of the Sun/NeXT format # that uses little-endian encoding and has a different magic number 0 lelong 0x0064732E DEC audio data: >12 lelong 1 8-bit ISDN u-law, >12 lelong 2 8-bit linear PCM [REF-PCM], >12 lelong 3 16-bit linear PCM, >12 lelong 4 24-bit linear PCM, >12 lelong 5 32-bit linear PCM, >12 lelong 6 32-bit IEEE floating point, >12 lelong 7 64-bit IEEE floating point, >12 lelong 23 8-bit ISDN u-law compressed (CCITT G.721 ADPCM voice data encoding), >20 lelong 1 mono, >20 lelong 2 stereo, >20 lelong 4 quad, >16 lelong >0 %d Hz # Creative Labs AUDIO stuff 0 string MThd Standard MIDI data >9 byte >0 (format %d) >11 byte >1 using %d channels 0 string CTMF Creative Music (CMF) data 0 string SBI SoundBlaster instrument data 0 string Creative\ Voice\ File Creative Labs voice data # is this next line right? it came this way... >19 byte 0x1A >23 byte >0 - version %d >22 byte >0 \b.%d # first entry is also the string "NTRK" 0 belong 0x4e54524b MultiTrack sound data >4 belong x - version %ld # Microsoft WAVE format (*.wav) 0 string RIFF Microsoft RIFF >8 string WAVE \b, WAVE audio data >>34 leshort >0 \b, %d bit >>22 leshort =1 \b, mono >>22 leshort =2 \b, stereo >>22 leshort >2 \b, %d channels >>24 lelong >0 %d Hz # AVI == Audio Video Interleave >8 string AVI\ \b, AVI data # Extended MOD format (*.emd) (Greg Roelofs, newt@uchicago.edu); NOT TESTED # [based on posting 940824 by "Dirk/Elastik", husberg@lehtori.cc.tut.fi] 0 string EMOD Extended MOD sound data, >4 byte&0xf0 x version %d >4 byte&0x0f x \b.%d, >45 byte x %d instruments >83 byte 0 (module) >83 byte 1 (song) # Real Audio (Magic .ra\0375) 0 belong 0x2e7261fd realaudio sound file # MTM/669/FAR/S3M/ULT/XM format checking [Aaron Eppert, aeppert@dialin.ind.net] # Oct 31, 1995 0 string MTM MultiTracker Module sound file 0 string if Composer 669 Module sound data 0 string FAR Module sound data 0 string MAS_U ULT(imate) Module sound data 0x2c string SCRM ScreamTracker III Module sound data 0 string Extended Module Extended Module sound data