1 2#------------------------------------------------------------------------------ 3# $File: riff,v 1.34 2019/04/19 00:42:27 christos Exp $ 4# riff: file(1) magic for RIFF format 5# See 6# 7# https://www.seanet.com/users/matts/riffmci/riffmci.htm 8# http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Docs/riffmci.pdf 9# 10 11# audio format tag. Assume limits: max 1024 bit, 128 channels, 1 MHz 120 name riff-wave 13>0 leshort 1 \b, Microsoft PCM 14>>14 leshort >0 15>>>14 leshort <1024 \b, %d bit 16>0 leshort 2 \b, Microsoft ADPCM 17>0 leshort 6 \b, ITU G.711 A-law 18>0 leshort 7 \b, ITU G.711 mu-law 19>0 leshort 8 \b, Microsoft DTS 20>0 leshort 17 \b, IMA ADPCM 21>0 leshort 20 \b, ITU G.723 ADPCM (Yamaha) 22>0 leshort 49 \b, GSM 6.10 23>0 leshort 64 \b, ITU G.721 ADPCM 24>0 leshort 80 \b, MPEG 25>0 leshort 85 \b, MPEG Layer 3 26>0 leshort 0x2001 \b, DTS 27>2 leshort =1 \b, mono 28>2 leshort =2 \b, stereo 29>2 leshort >2 30>>2 leshort <128 \b, %d channels 31>4 lelong >0 32>>4 lelong <1000000 %d Hz 33 34# try to find "fmt " 350 name riff-walk 36>0 string fmt\x20 37>>4 lelong <0x80 38>>>8 use riff-wave 39>0 string LIST 40>>&(4.l+4) use riff-walk 41>0 string DISP 42>>&(4.l+4) use riff-walk 43>0 string bext 44>>&(4.l+4) use riff-walk 45>0 string Fake 46>>&(4.l+4) use riff-walk 47>0 string fact 48>>&(4.l+4) use riff-walk 49>0 string VP8 50>>11 byte 0x9d 51>>>12 byte 0x01 52>>>>13 byte 0x2a \b, VP8 encoding 53>>>>>14 leshort&0x3fff x \b, %d 54>>>>>16 leshort&0x3fff x \bx%d, Scaling: 55>>>>>14 leshort&0xc000 0x0000 \b [none] 56>>>>>14 leshort&0xc000 0x1000 \b [5/4] 57>>>>>14 leshort&0xc000 0x2000 \b [5/3] 58>>>>>14 leshort&0xc000 0x3000 \b [2] 59>>>>>14 leshort&0xc000 0x0000 \bx[none] 60>>>>>14 leshort&0xc000 0x1000 \bx[5/4] 61>>>>>14 leshort&0xc000 0x2000 \bx[5/3] 62>>>>>14 leshort&0xc000 0x3000 \bx[2] 63>>>>>15 byte&0x80 =0x00 \b, YUV color 64>>>>>15 byte&0x80 =0x80 \b, bad color specification 65>>>>>15 byte&0x40 =0x40 \b, no clamping required 66>>>>>15 byte&0x40 =0x00 \b, decoders should clamp 67#>0 string x we got %s 68#>>&(4.l+4) use riff-walk 69 70# AVI section extended by Patrik Radman <patrik+file-magic@iki.fi> 71# 720 string RIFF RIFF (little-endian) data 73# RIFF Palette format 74# Update: Joerg Jenderek 75# URL: https://en.wikipedia.org/wiki/Resource_Interchange_File_Format 76# Reference: https://worms2d.info/Palette_file 77>8 string PAL\ \b, palette 78!:mime application/x-riff 79# color palette by Microsoft Corporation 80!:ext pal 81# file size = chunk size + 8 in most cases 82>>4 ulelong+8 x \b, %u bytes 83# Extended PAL Format 84>>12 string plth \b, extended 85# Simple PAL Format 86>>12 string data 87# data chunk size = color entries * 4 + 4 + sometimes extra (4) appended bytes 88>>>16 ulelong x \b, data size %u 89# palVersion is always 0x0300 90#>>>20 leshort x \b, version 0x%4.4x 91# palNumEntries specifies the number of palette color entries 92>>>22 uleshort x \b, %u entries 93# after palPalEntry sized (number of color entries * 4 ) vector 94>>>(22.s*4) ubequad x 95# jump relative 22 ( 8 + 16) bytes forward points after end of file or to 96# appended extra bytes like in http://safecolours.rigdenage.com/set(ms).zip/Protan(MS).pal 97>>>>&16 ubelong x \b, extra bytes 98>>>>>&-4 ubelong >0 0x%8.8x 99# RIFF Device Independent Bitmap format 100>8 string RDIB \b, device-independent bitmap 101>>16 string BM 102>>>30 leshort 12 \b, OS/2 1.x format 103>>>>34 leshort x \b, %d x 104>>>>36 leshort x %d 105>>>30 leshort 64 \b, OS/2 2.x format 106>>>>34 leshort x \b, %d x 107>>>>36 leshort x %d 108>>>30 leshort 40 \b, Windows 3.x format 109>>>>34 lelong x \b, %d x 110>>>>38 lelong x %d x 111>>>>44 leshort x %d 112# RIFF MIDI format 113>8 string RMID \b, MIDI 114# RIFF Multimedia Movie File format 115>8 string RMMP \b, multimedia movie 116# RIFF wrapper for MP3 117>8 string RMP3 \b, MPEG Layer 3 audio 118# Microsoft WAVE format (*.wav) 119>8 string WAVE \b, WAVE audio 120!:mime audio/x-wav 121>>12 string >\0 122>>>12 use riff-walk 123# Corel Draw Picture 124>8 string CDRA \b, Corel Draw Picture 125!:mime image/x-coreldraw 126>8 string CDR6 \b, Corel Draw Picture, version 6 127!:mime image/x-coreldraw 128>8 string NUNDROOT \b, Steinberg CuBase 129# AVI == Audio Video Interleave 130>8 string AVI\040 \b, AVI 131!:mime video/x-msvideo 132>>12 string LIST 133>>>20 string hdrlavih 134>>>>&36 lelong x \b, %u x 135>>>>&40 lelong x %u, 136>>>>&4 lelong >1000000 <1 fps, 137>>>>&4 lelong 1000000 1.00 fps, 138>>>>&4 lelong 500000 2.00 fps, 139>>>>&4 lelong 333333 3.00 fps, 140>>>>&4 lelong 250000 4.00 fps, 141>>>>&4 lelong 200000 5.00 fps, 142>>>>&4 lelong 166667 6.00 fps, 143>>>>&4 lelong 142857 7.00 fps, 144>>>>&4 lelong 125000 8.00 fps, 145>>>>&4 lelong 111111 9.00 fps, 146>>>>&4 lelong 100000 10.00 fps, 147# ]9.9,10.1[ 148>>>>&4 lelong <101010 149>>>>>&-4 lelong >99010 150>>>>>>&-4 lelong !100000 ~10 fps, 151>>>>&4 lelong 83333 12.00 fps, 152# ]11.9,12.1[ 153>>>>&4 lelong <84034 154>>>>>&-4 lelong >82645 155>>>>>>&-4 lelong !83333 ~12 fps, 156>>>>&4 lelong 66667 15.00 fps, 157# ]14.9,15.1[ 158>>>>&4 lelong <67114 159>>>>>&-4 lelong >66225 160>>>>>>&-4 lelong !66667 ~15 fps, 161>>>>&4 lelong 50000 20.00 fps, 162>>>>&4 lelong 41708 23.98 fps, 163>>>>&4 lelong 41667 24.00 fps, 164# ]23.9,24.1[ 165>>>>&4 lelong <41841 166>>>>>&-4 lelong >41494 167>>>>>>&-4 lelong !41708 168>>>>>>>&-4 lelong !41667 ~24 fps, 169>>>>&4 lelong 40000 25.00 fps, 170# ]24.9,25.1[ 171>>>>&4 lelong <40161 172>>>>>&-4 lelong >39841 173>>>>>>&-4 lelong !40000 ~25 fps, 174>>>>&4 lelong 33367 29.97 fps, 175>>>>&4 lelong 33333 30.00 fps, 176# ]29.9,30.1[ 177>>>>&4 lelong <33445 178>>>>>&-4 lelong >33223 179>>>>>>&-4 lelong !33367 180>>>>>>>&-4 lelong !33333 ~30 fps, 181>>>>&4 lelong <32224 >30 fps, 182##>>>>&4 lelong x (%lu) 183##>>>>&20 lelong x %lu frames, 184# Note: The tests below assume that the AVI has 1 or 2 streams, 185# "vids" optionally followed by "auds". 186# (Should cover 99.9% of all AVIs.) 187# assuming avih length = 56 188>>>88 string LIST 189>>>>96 string strlstrh 190>>>>>108 string vids video: 191>>>>>>&0 lelong 0 uncompressed 192# skip past vids strh 193>>>>>>(104.l+108) string strf 194>>>>>>>(104.l+132) lelong 1 RLE 8bpp 195>>>>>>>(104.l+132) string/c cvid Cinepak 196>>>>>>>(104.l+132) string/c i263 Intel I.263 197>>>>>>>(104.l+132) string/c iv32 Indeo 3.2 198>>>>>>>(104.l+132) string/c iv41 Indeo 4.1 199>>>>>>>(104.l+132) string/c iv50 Indeo 5.0 200>>>>>>>(104.l+132) string/c mp42 Microsoft MPEG-4 v2 201>>>>>>>(104.l+132) string/c mp43 Microsoft MPEG-4 v3 202>>>>>>>(104.l+132) string/c fmp4 FFMpeg MPEG-4 203>>>>>>>(104.l+132) string/c mjpg Motion JPEG 204>>>>>>>(104.l+132) string/c div3 DivX 3 205>>>>>>>>112 string/c div3 Low-Motion 206>>>>>>>>112 string/c div4 Fast-Motion 207>>>>>>>(104.l+132) string/c divx DivX 4 208>>>>>>>(104.l+132) string/c dx50 DivX 5 209>>>>>>>(104.l+132) string/c xvid XviD 210>>>>>>>(104.l+132) string/c h264 H.264 211>>>>>>>(104.l+132) string/c wmv3 Windows Media Video 9 212>>>>>>>(104.l+132) string/c h264 X.264 or H.264 213>>>>>>>(104.l+132) lelong 0 214##>>>>>>>(104.l+132) string x (%.4s) 215# skip past first (video) LIST 216>>>>(92.l+96) string LIST 217>>>>>(92.l+104) string strlstrh 218>>>>>>(92.l+116) string auds \b, audio: 219# auds strh length = 56: 220>>>>>>>(92.l+172) string strf 221>>>>>>>>(92.l+180) leshort 0x0001 uncompressed PCM 222>>>>>>>>(92.l+180) leshort 0x0002 ADPCM 223>>>>>>>>(92.l+180) leshort 0x0006 aLaw 224>>>>>>>>(92.l+180) leshort 0x0007 uLaw 225>>>>>>>>(92.l+180) leshort 0x0050 MPEG-1 Layer 1 or 2 226>>>>>>>>(92.l+180) leshort 0x0055 MPEG-1 Layer 3 227>>>>>>>>(92.l+180) leshort 0x2000 Dolby AC3 228>>>>>>>>(92.l+180) leshort 0x0161 DivX 229##>>>>>>>>(92.l+180) leshort x (0x%.4x) 230>>>>>>>>(92.l+182) leshort 1 (mono, 231>>>>>>>>(92.l+182) leshort 2 (stereo, 232>>>>>>>>(92.l+182) leshort >2 (%d channels, 233>>>>>>>>(92.l+184) lelong x %d Hz) 234# auds strh length = 64: 235>>>>>>>(92.l+180) string strf 236>>>>>>>>(92.l+188) leshort 0x0001 uncompressed PCM 237>>>>>>>>(92.l+188) leshort 0x0002 ADPCM 238>>>>>>>>(92.l+188) leshort 0x0055 MPEG-1 Layer 3 239>>>>>>>>(92.l+188) leshort 0x2000 Dolby AC3 240>>>>>>>>(92.l+188) leshort 0x0161 DivX 241##>>>>>>>>(92.l+188) leshort x (0x%.4x) 242>>>>>>>>(92.l+190) leshort 1 (mono, 243>>>>>>>>(92.l+190) leshort 2 (stereo, 244>>>>>>>>(92.l+190) leshort >2 (%d channels, 245>>>>>>>>(92.l+192) lelong x %d Hz) 246# Animated Cursor format 247>8 string ACON \b, animated cursor 248# SoundFont 2 <mpruett@sgi.com> 249>8 string sfbk SoundFont/Bank 250# MPEG-1 wrapped in a RIFF, apparently 251>8 string CDXA \b, wrapped MPEG-1 (CDXA) 252>8 string 4XMV \b, 4X Movie file 253# AMV-type AVI file: https://wiki.multimedia.cx/index.php?title=AMV 254>8 string AMV\040 \b, AMV 255>8 string WEBP \b, Web/P image 256!:mime image/webp 257>>12 use riff-walk 258 259# 260# XXX - some of the below may only appear in little-endian form. 261# 262# Also "MV93" appears to be for one form of Macromedia Director 263# files, and "GDMF" appears to be another multimedia format. 264# 2650 string RIFX RIFF (big-endian) data 266# RIFF Palette format 267>8 string PAL \b, palette 268>>16 beshort x \b, version %d 269>>18 beshort x \b, %d entries 270# RIFF Device Independent Bitmap format 271>8 string RDIB \b, device-independent bitmap 272>>16 string BM 273>>>30 beshort 12 \b, OS/2 1.x format 274>>>>34 beshort x \b, %d x 275>>>>36 beshort x %d 276>>>30 beshort 64 \b, OS/2 2.x format 277>>>>34 beshort x \b, %d x 278>>>>36 beshort x %d 279>>>30 beshort 40 \b, Windows 3.x format 280>>>>34 belong x \b, %d x 281>>>>38 belong x %d x 282>>>>44 beshort x %d 283# RIFF MIDI format 284>8 string RMID \b, MIDI 285# RIFF Multimedia Movie File format 286>8 string RMMP \b, multimedia movie 287# Microsoft WAVE format (*.wav) 288>8 string WAVE \b, WAVE audio 289>>20 leshort 1 \b, Microsoft PCM 290>>>34 leshort >0 \b, %d bit 291>>22 beshort =1 \b, mono 292>>22 beshort =2 \b, stereo 293>>22 beshort >2 \b, %d channels 294>>24 belong >0 %d Hz 295# Corel Draw Picture 296>8 string CDRA \b, Corel Draw Picture 297>8 string CDR6 \b, Corel Draw Picture, version 6 298# AVI == Audio Video Interleave 299>8 string AVI\040 \b, AVI 300# Animated Cursor format 301>8 string ACON \b, animated cursor 302# Notation Interchange File Format (big-endian only) 303>8 string NIFF \b, Notation Interchange File Format 304# SoundFont 2 <mpruett@sgi.com> 305>8 string sfbk SoundFont/Bank 306 307#------------------------------------------------------------------------------ 308# Sony Wave64 309# see http://www.vcs.de/fileadmin/user_upload/MBS/PDF/Whitepaper/Informations_about_Sony_Wave64.pdf 310# 128 bit RIFF-GUID { 66666972-912E-11CF-A5D6-28DB04C10000 } in little-endian 3110 string riff\x2E\x91\xCF\x11\xA5\xD6\x28\xDB\x04\xC1\x00\x00 Sony Wave64 RIFF data 312# 128 bit + total file size (64 bits) so 24 bytes 313# then WAVE-GUID { 65766177-ACF3-11D3-8CD1-00C04F8EDB8A } 314>24 string wave\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A \b, WAVE 64 audio 315!:mime audio/x-w64 316# FMT-GUID { 20746D66-ACF3-11D3-8CD1-00C04F8EDB8A } 317>>40 search/256 fmt\x20\xF3\xAC\xD3\x11\x8C\xD1\x00\xC0\x4F\x8E\xDB\x8A \b 318>>>&10 leshort =1 \b, mono 319>>>&10 leshort =2 \b, stereo 320>>>&10 leshort >2 \b, %d channels 321>>>&12 lelong >0 %d Hz 322 323#------------------------------------------------------------------------------ 324# MBWF/RF64 325# see EBU TECH 3306 https://tech.ebu.ch/docs/tech/tech3306-2009.pdf 3260 string RF64\xff\xff\xff\xffWAVEds64 MBWF/RF64 audio 327!:mime audio/x-wav 328>40 search/256 fmt\x20 \b 329>>&6 leshort =1 \b, mono 330>>&6 leshort =2 \b, stereo 331>>&6 leshort >2 \b, %d channels 332>>&8 lelong >0 %d Hz 333