74 lines
2.4 KiB
Plaintext
74 lines
2.4 KiB
Plaintext
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#------------------------------------------------------------------------------
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# audio: file(1) magic for sound formats
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#
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# Jan Nicolai Langfeldt (janl@ifi.uio.no), Dan Quinlan (quinlan@yggdrasil.com),
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# and others
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#
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# Sun/NeXT audio data
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0 string .snd Sun/NeXT audio data:
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>12 belong 1 8-bit ISDN u-law,
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>12 belong 2 8-bit linear PCM [REF-PCM],
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>12 belong 3 16-bit linear PCM,
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>12 belong 4 24-bit linear PCM,
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>12 belong 5 32-bit linear PCM,
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>12 belong 6 32-bit IEEE floating point,
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>12 belong 7 64-bit IEEE floating point,
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>12 belong 23 8-bit ISDN u-law compressed (CCITT G.721 ADPCM voice data encoding),
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>20 belong 1 mono,
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>20 belong 2 stereo,
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>20 belong 4 quad,
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>16 belong >0 %d Hz
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# DEC systems (e.g. DECstation 5000) use a variant of the Sun/NeXT format
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# that uses little-endian encoding and has a different magic number
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0 lelong 0x0064732E DEC audio data:
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>12 lelong 1 8-bit ISDN u-law,
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>12 lelong 2 8-bit linear PCM [REF-PCM],
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>12 lelong 3 16-bit linear PCM,
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>12 lelong 4 24-bit linear PCM,
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>12 lelong 5 32-bit linear PCM,
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>12 lelong 6 32-bit IEEE floating point,
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>12 lelong 7 64-bit IEEE floating point,
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>12 lelong 23 8-bit ISDN u-law compressed (CCITT G.721 ADPCM voice data encoding),
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>20 lelong 1 mono,
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>20 lelong 2 stereo,
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>20 lelong 4 quad,
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>16 lelong >0 %d Hz
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# Creative Labs AUDIO stuff
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0 string MThd Standard MIDI data
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>9 byte >0 (format %d)
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>11 byte >1 using %d channels
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0 string CTMF Creative Music (CMF) data
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0 string SBI SoundBlaster instrument data
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0 string Creative\ Voice\ File Creative Labs voice data
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# is this next line right? it came this way...
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>19 byte 0x1A
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>23 byte >0 - version %d
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>22 byte >0 \b.%d
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# first entry is also the string "NTRK"
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0 belong 0x4e54524b MultiTrack sound data
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>4 belong x - version %ld
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# Microsoft WAVE format (*.wav)
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# [GRR 950115: probably all of the shorts and longs should be leshort/lelong]
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0 string RIFF Microsoft RIFF
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>8 string WAVE - WAVE format
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>34 short >0 %d bit
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>22 short =1 Mono
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>22 short =2 Stereo
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>22 short >2 %d Channels
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>24 long >0 %d Hz
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# Extended MOD format (*.emd) (Greg Roelofs, newt@uchicago.edu); NOT TESTED
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# [based on posting 940824 by "Dirk/Elastik", husberg@lehtori.cc.tut.fi]
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0 string EMOD Extended MOD sound data,
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>4 byte&0xf0 x version %d
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>4 byte&0x0f x \b.%d,
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>45 byte x %d instruments
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>83 byte 0 (module)
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>83 byte 1 (song)
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