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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),
>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
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