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- #------------------------------------------------------------------------------
- # riff: file(1) magic for RIFF format
- # See
- #
- # http://www.seanet.com/users/matts/riffmci/riffmci.htm
- #
- # AVI section extended by Patrik Rådman <patrik+file-magic@iki.fi>
- #
- 0 string RIFF RIFF (little-endian) data
- # RIFF Palette format
- >8 string PAL \b, palette
- >>16 leshort x \b, version %d
- >>18 leshort x \b, %d entries
- # RIFF Device Independent Bitmap format
- >8 string RDIB \b, device-independent bitmap
- >>16 string BM
- >>>30 leshort 12 \b, OS/2 1.x format
- >>>>34 leshort x \b, %d x
- >>>>36 leshort x %d
- >>>30 leshort 64 \b, OS/2 2.x format
- >>>>34 leshort x \b, %d x
- >>>>36 leshort x %d
- >>>30 leshort 40 \b, Windows 3.x format
- >>>>34 lelong x \b, %d x
- >>>>38 lelong x %d x
- >>>>44 leshort x %d
- # RIFF MIDI format
- >8 string RMID \b, MIDI
- # RIFF Multimedia Movie File format
- >8 string RMMP \b, multimedia movie
- # RIFF wrapper for MP3
- >8 string RMP3 \b, MPEG Layer 3 audio
- # Microsoft WAVE format (*.wav)
- >8 string WAVE \b, WAVE audio
- >>20 leshort 1 \b, Microsoft PCM
- >>>34 leshort >0 \b, %d bit
- >>20 leshort 2 \b, Microsoft ADPCM
- >>20 leshort 6 \b, ITU G.711 A-law
- >>20 leshort 7 \b, ITU G.711 mu-law
- >>20 leshort 17 \b, IMA ADPCM
- >>20 leshort 20 \b, ITU G.723 ADPCM (Yamaha)
- >>20 leshort 49 \b, GSM 6.10
- >>20 leshort 64 \b, ITU G.721 ADPCM
- >>20 leshort 80 \b, MPEG
- >>20 leshort 85 \b, MPEG Layer 3
- >>22 leshort =1 \b, mono
- >>22 leshort =2 \b, stereo
- >>22 leshort >2 \b, %d channels
- >>24 lelong >0 %d Hz
- # Corel Draw Picture
- >8 string CDRA \b, Corel Draw Picture
- # AVI == Audio Video Interleave
- >8 string AVI\040 \b, AVI
- >>12 string LIST
- >>>20 string hdrlavih
- >>>>&36 lelong x \b, %lu x
- >>>>&40 lelong x %lu,
- >>>>&4 lelong >1000000 <1 fps,
- >>>>&4 lelong 1000000 1.00 fps,
- >>>>&4 lelong 500000 2.00 fps,
- >>>>&4 lelong 333333 3.00 fps,
- >>>>&4 lelong 250000 4.00 fps,
- >>>>&4 lelong 200000 5.00 fps,
- >>>>&4 lelong 166667 6.00 fps,
- >>>>&4 lelong 142857 7.00 fps,
- >>>>&4 lelong 125000 8.00 fps,
- >>>>&4 lelong 111111 9.00 fps,
- >>>>&4 lelong 100000 10.00 fps,
- # ]9.9,10.1[
- >>>>&4 lelong <101010
- >>>>>&-4 lelong >99010
- >>>>>>&-4 lelong !100000 ~10 fps,
- >>>>&4 lelong 83333 12.00 fps,
- # ]11.9,12.1[
- >>>>&4 lelong <84034
- >>>>>&-4 lelong >82645
- >>>>>>&-4 lelong !83333 ~12 fps,
- >>>>&4 lelong 66667 15.00 fps,
- # ]14.9,15.1[
- >>>>&4 lelong <67114
- >>>>>&-4 lelong >66225
- >>>>>>&-4 lelong !66667 ~15 fps,
- >>>>&4 lelong 50000 20.00 fps,
- >>>>&4 lelong 41708 23.98 fps,
- >>>>&4 lelong 41667 24.00 fps,
- # ]23.9,24.1[
- >>>>&4 lelong <41841
- >>>>>&-4 lelong >41494
- >>>>>>&-4 lelong !41708
- >>>>>>>&-4 lelong !41667 ~24 fps,
- >>>>&4 lelong 40000 25.00 fps,
- # ]24.9,25.1[
- >>>>&4 lelong <40161
- >>>>>&-4 lelong >39841
- >>>>>>&-4 lelong !40000 ~25 fps,
- >>>>&4 lelong 33367 29.97 fps,
- >>>>&4 lelong 33333 30.00 fps,
- # ]29.9,30.1[
- >>>>&4 lelong <33445
- >>>>>&-4 lelong >33223
- >>>>>>&-4 lelong !33367
- >>>>>>>&-4 lelong !33333 ~30 fps,
- >>>>&4 lelong <32224 >30 fps,
- ##>>>>&4 lelong x (%lu)
- ##>>>>&20 lelong x %lu frames,
- # Note: The tests below assume that the AVI has 1 or 2 streams,
- # "vids" optionally followed by "auds".
- # (Should cover 99.9% of all AVIs.)
- # assuming avih length = 56
- >>>88 string LIST
- >>>>96 string strlstrh
- >>>>>108 string vids video:
- >>>>>>&0 lelong 0 uncompressed
- # skip past vids strh
- >>>>>>(104.l+108) string strf
- >>>>>>>(104.l+132) lelong 1 RLE 8bpp
- >>>>>>>(104.l+132) string/c cvid Cinepak
- >>>>>>>(104.l+132) string/c i263 Intel I.263
- >>>>>>>(104.l+132) string/c iv32 Indeo 3.2
- >>>>>>>(104.l+132) string/c iv41 Indeo 4.1
- >>>>>>>(104.l+132) string/c iv50 Indeo 5.0
- >>>>>>>(104.l+132) string/c mp42 Microsoft MPEG-4 v2
- >>>>>>>(104.l+132) string/c mp43 Microsoft MPEG-4 v3
- >>>>>>>(104.l+132) string/c fmp4 FFMpeg MPEG-4
- >>>>>>>(104.l+132) string/c mjpg Motion JPEG
- >>>>>>>(104.l+132) string/c div3 DivX 3
- >>>>>>>>112 string/c div3 Low-Motion
- >>>>>>>>112 string/c div4 Fast-Motion
- >>>>>>>(104.l+132) string/c divx DivX 4
- >>>>>>>(104.l+132) string/c dx50 DivX 5
- >>>>>>>(104.l+132) string/c xvid XviD
- >>>>>>>(104.l+132) string/c wmv3 Windows Media Video 9
- >>>>>>>(104.l+132) string/c h264 X.264
- >>>>>>>(104.l+132) lelong 0
- ##>>>>>>>(104.l+132) string x (%.4s)
- # skip past first (video) LIST
- >>>>(92.l+96) string LIST
- >>>>>(92.l+104) string strlstrh
- >>>>>>(92.l+116) string auds \b, audio:
- # auds strh length = 56:
- >>>>>>>(92.l+172) string strf
- >>>>>>>>(92.l+180) leshort 0x0001 uncompressed PCM
- >>>>>>>>(92.l+180) leshort 0x0002 ADPCM
- >>>>>>>>(92.l+180) leshort 0x0006 aLaw
- >>>>>>>>(92.l+180) leshort 0x0007 uLaw
- >>>>>>>>(92.l+180) leshort 0x0050 MPEG-1 Layer 1 or 2
- >>>>>>>>(92.l+180) leshort 0x0055 MPEG-1 Layer 3
- >>>>>>>>(92.l+180) leshort 0x2000 Dolby AC3
- >>>>>>>>(92.l+180) leshort 0x0161 DivX
- ##>>>>>>>>(92.l+180) leshort x (0x%.4x)
- >>>>>>>>(92.l+182) leshort 1 (mono,
- >>>>>>>>(92.l+182) leshort 2 (stereo,
- >>>>>>>>(92.l+182) leshort >2 (%d channels,
- >>>>>>>>(92.l+184) lelong x %d Hz)
- # auds strh length = 64:
- >>>>>>>(92.l+180) string strf
- >>>>>>>>(92.l+188) leshort 0x0001 uncompressed PCM
- >>>>>>>>(92.l+188) leshort 0x0002 ADPCM
- >>>>>>>>(92.l+188) leshort 0x0055 MPEG-1 Layer 3
- >>>>>>>>(92.l+188) leshort 0x2000 Dolby AC3
- >>>>>>>>(92.l+188) leshort 0x0161 DivX
- ##>>>>>>>>(92.l+188) leshort x (0x%.4x)
- >>>>>>>>(92.l+190) leshort 1 (mono,
- >>>>>>>>(92.l+190) leshort 2 (stereo,
- >>>>>>>>(92.l+190) leshort >2 (%d channels,
- >>>>>>>>(92.l+192) lelong x %d Hz)
- # Animated Cursor format
- >8 string ACON \b, animated cursor
- # SoundFont 2 <mpruett@sgi.com>
- >8 string sfbk SoundFont/Bank
- # MPEG-1 wrapped in a RIFF, apparently
- >8 string CDXA \b, wrapped MPEG-1 (CDXA)
- >8 string 4XMV \b, 4X Movie file
- #
- # XXX - some of the below may only appear in little-endian form.
- #
- # Also "MV93" appears to be for one form of Macromedia Director
- # files, and "GDMF" appears to be another multimedia format.
- #
- 0 string RIFX RIFF (big-endian) data
- # RIFF Palette format
- >8 string PAL \b, palette
- >>16 beshort x \b, version %d
- >>18 beshort x \b, %d entries
- # RIFF Device Independent Bitmap format
- >8 string RDIB \b, device-independent bitmap
- >>16 string BM
- >>>30 beshort 12 \b, OS/2 1.x format
- >>>>34 beshort x \b, %d x
- >>>>36 beshort x %d
- >>>30 beshort 64 \b, OS/2 2.x format
- >>>>34 beshort x \b, %d x
- >>>>36 beshort x %d
- >>>30 beshort 40 \b, Windows 3.x format
- >>>>34 belong x \b, %d x
- >>>>38 belong x %d x
- >>>>44 beshort x %d
- # RIFF MIDI format
- >8 string RMID \b, MIDI
- # RIFF Multimedia Movie File format
- >8 string RMMP \b, multimedia movie
- # Microsoft WAVE format (*.wav)
- >8 string WAVE \b, WAVE audio
- >>20 leshort 1 \b, Microsoft PCM
- >>>34 leshort >0 \b, %d bit
- >>22 beshort =1 \b, mono
- >>22 beshort =2 \b, stereo
- >>22 beshort >2 \b, %d channels
- >>24 belong >0 %d Hz
- # Corel Draw Picture
- >8 string CDRA \b, Corel Draw Picture
- # AVI == Audio Video Interleave
- >8 string AVI\040 \b, AVI
- # Animated Cursor format
- >8 string ACON \b, animated cursor
- # Notation Interchange File Format (big-endian only)
- >8 string NIFF \b, Notation Interchange File Format
- # SoundFont 2 <mpruett@sgi.com>
- >8 string sfbk SoundFont/Bank
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