2 #------------------------------------------------------------------------------
3 # $File: riff,v 1.33 2017/10/06 01:11:24 christos Exp $
4 # riff: file(1) magic for RIFF format
7 # http://www.seanet.com/users/matts/riffmci/riffmci.htm
8 # http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Docs/riffmci.pdf
11 # audio format tag. Assume limits: max 1024 bit, 128 channels, 1 MHz
13 >0 leshort 1 \b, Microsoft PCM
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
30 >>2 leshort <128 \b, %d channels
32 >>4 lelong <1000000 %d Hz
40 >>&(4.l+4) use riff-walk
42 >>&(4.l+4) use riff-walk
44 >>&(4.l+4) use riff-walk
46 >>&(4.l+4) use riff-walk
48 >>&(4.l+4) use riff-walk
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
70 # AVI section extended by Patrik Radman <patrik+file-magic@iki.fi>
72 0 string RIFF RIFF (little-endian) data
74 # Update: Joerg Jenderek
75 # URL: https://en.wikipedia.org/wiki/Resource_Interchange_File_Format
76 # Reference: http://worms2d.info/Palette_file
77 >8 string PAL\ \b, palette
78 !:mime application/x-riff
79 # color palette by Microsoft Corporation
81 # file size = chunk size + 8 in most cases
82 >>4 ulelong+8 x \b, %u bytes
84 >>12 string plth \b, extended
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
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
102 >>>30 leshort 12 \b, OS/2 1.x format
103 >>>>34 leshort x \b, %d x
105 >>>30 leshort 64 \b, OS/2 2.x format
106 >>>>34 leshort x \b, %d x
108 >>>30 leshort 40 \b, Windows 3.x format
109 >>>>34 lelong x \b, %d x
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
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
133 >>>20 string hdrlavih
134 >>>>&36 lelong x \b, %u x
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,
148 >>>>&4 lelong <101010
149 >>>>>&-4 lelong >99010
150 >>>>>>&-4 lelong !100000 ~10 fps,
151 >>>>&4 lelong 83333 12.00 fps,
154 >>>>>&-4 lelong >82645
155 >>>>>>&-4 lelong !83333 ~12 fps,
156 >>>>&4 lelong 66667 15.00 fps,
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,
166 >>>>>&-4 lelong >41494
167 >>>>>>&-4 lelong !41708
168 >>>>>>>&-4 lelong !41667 ~24 fps,
169 >>>>&4 lelong 40000 25.00 fps,
172 >>>>>&-4 lelong >39841
173 >>>>>>&-4 lelong !40000 ~25 fps,
174 >>>>&4 lelong 33367 29.97 fps,
175 >>>>&4 lelong 33333 30.00 fps,
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
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: http://wiki.multimedia.cx/index.php?title=AMV
254 >8 string AMV\040 \b, AMV
255 >8 string WEBP \b, Web/P image
260 # XXX - some of the below may only appear in little-endian form.
262 # Also "MV93" appears to be for one form of Macromedia Director
263 # files, and "GDMF" appears to be another multimedia format.
265 0 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
273 >>>30 beshort 12 \b, OS/2 1.x format
274 >>>>34 beshort x \b, %d x
276 >>>30 beshort 64 \b, OS/2 2.x format
277 >>>>34 beshort x \b, %d x
279 >>>30 beshort 40 \b, Windows 3.x format
280 >>>>34 belong x \b, %d x
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
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
307 #------------------------------------------------------------------------------
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
311 0 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
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
323 #------------------------------------------------------------------------------
325 # see EBU TECH 3306 http://tech.ebu.ch/docs/tech/tech3306-2009.pdf
326 0 string RF64\xff\xff\xff\xffWAVEds64 MBWF/RF64 audio
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