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- #------------------------------------------------------------------------------
- # 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),
- >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)
- # [GRR 950115: probably all of the shorts and longs should be leshort/lelong]
- 0 string RIFF Microsoft RIFF
- >8 string WAVE \b, WAVE audio data
- >>34 short >0 \b, %d bit
- >>22 short =1 \b, mono
- >>22 short =2 \b, stereo
- >>22 short >2 \b, %d channels
- >>24 long >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
- # 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
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