diff options
Diffstat (limited to 'magic/Magdir/vorbis')
| -rw-r--r-- | magic/Magdir/vorbis | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/magic/Magdir/vorbis b/magic/Magdir/vorbis new file mode 100644 index 0000000..ed6c040 --- /dev/null +++ b/magic/Magdir/vorbis @@ -0,0 +1,118 @@ + +#------------------------------------------------------------------------------ +# $File: vorbis,v 1.16 2009/09/19 16:28:13 christos Exp $ +# vorbis: file(1) magic for Ogg/Vorbis files +# +# From Felix von Leitner <leitner@fefe.de> +# Extended by Beni Cherniavsky <cben@crosswinds.net> +# Further extended by Greg Wooledge <greg@wooledge.org> +# +# Most (everything but the number of channels and bitrate) is commented +# out with `##' as it's not interesting to the average user. The most +# probable things advanced users would want to uncomment are probably +# the number of comments and the encoder version. +# +# FIXME: The first match has been made a search, so that it can skip +# over prepended ID3 tags. This will work for MIME type detection, but +# won't work for detecting other properties of the file (they all need +# to be made relative to the search). In any case, if the file has ID3 +# tags, the ID3 information will be printed, not the Ogg information, +# so until that's fixed, this doesn't matter. +# FIXME[2]: Disable the above for now, since search assumes text mode. +# +# --- Ogg Framing --- +#0 search/1000 OggS Ogg data +0 string OggS Ogg data +!:mime application/ogg +>4 byte !0 UNKNOWN REVISION %u +##>4 byte 0 revision 0 +>4 byte 0 +##>>14 lelong x (Serial %lX) +# non-Vorbis content: FLAC (Free Lossless Audio Codec, http://flac.sourceforge.net) +>>28 string \x7fFLAC \b, FLAC audio +# non-Vorbis content: Theora +>>28 string \x80theora \b, Theora video +# non-Vorbis content: Kate +>>28 string \x80kate\0\0\0\0 \b, Kate +>>>37 ubyte x v%u +>>>38 ubyte x \b.%u, +>>>40 byte 0 utf8 encoding, +>>>40 byte !0 unknown character encoding, +>>>60 string >\0 language %s, +>>>60 string \0 no language set, +>>>76 string >\0 category %s +>>>76 string \0 no category set +# non-Vorbis content: Skeleton +>>28 string fishead\0 \b, Skeleton +>>>36 short x v%u +>>>40 short x \b.%u +# non-Vorbis content: Speex +>>28 string Speex\ \ \ \b, Speex audio +# non-Vorbis content: OGM +>>28 string \x01video\0\0\0 \b, OGM video +>>>37 string/c div3 (DivX 3) +>>>37 string/c divx (DivX 4) +>>>37 string/c dx50 (DivX 5) +>>>37 string/c xvid (XviD) +# --- First vorbis packet - general header --- +>>28 string \x01vorbis \b, Vorbis audio, +>>>35 lelong !0 UNKNOWN VERSION %lu, +##>>>35 lelong 0 version 0, +>>>35 lelong 0 +>>>>39 ubyte 1 mono, +>>>>39 ubyte 2 stereo, +>>>>39 ubyte >2 %u channels, +>>>>40 lelong x %lu Hz +# Minimal, nominal and maximal bitrates specified when encoding +>>>>48 string <\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff \b, +# The above tests if at least one of these is specified: +>>>>>52 lelong !-1 +# Vorbis RC2 has a bug which puts -1000 in the min/max bitrate fields +# instead of -1. +# Vorbis 1.0 uses 0 instead of -1. +>>>>>>52 lelong !0 +>>>>>>>52 lelong !-1000 +>>>>>>>>52 lelong x <%lu +>>>>>48 lelong !-1 +>>>>>>48 lelong x ~%lu +>>>>>44 lelong !-1 +>>>>>>44 lelong !-1000 +>>>>>>>44 lelong !0 +>>>>>>>>44 lelong x >%lu +>>>>>48 string <\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff bps +# -- Second vorbis header packet - the comments +# A kludge to read the vendor string. It's a counted string, not a +# zero-terminated one, so file(1) can't read it in a generic way. +# libVorbis is the only one existing currently, so I detect specifically +# it. The interesting value is the cvs date (8 digits decimal). +# Post-RC1 Ogg files have the second header packet (and thus the version) +# in a different place, so we must use an indirect offset. +>>>(84.b+85) string \x03vorbis +>>>>(84.b+96) string/c Xiphophorus\ libVorbis\ I \b, created by: Xiphophorus libVorbis I +>>>>>(84.b+120) string >00000000 +# Map to beta version numbers: +>>>>>>(84.b+120) string <20000508 (<beta1, prepublic) +>>>>>>(84.b+120) string 20000508 (1.0 beta 1 or beta 2) +>>>>>>(84.b+120) string >20000508 +>>>>>>>(84.b+120) string <20001031 (beta2-3) +>>>>>>(84.b+120) string 20001031 (1.0 beta 3) +>>>>>>(84.b+120) string >20001031 +>>>>>>>(84.b+120) string <20010225 (beta3-4) +>>>>>>(84.b+120) string 20010225 (1.0 beta 4) +>>>>>>(84.b+120) string >20010225 +>>>>>>>(84.b+120) string <20010615 (beta4-RC1) +>>>>>>(84.b+120) string 20010615 (1.0 RC1) +>>>>>>(84.b+120) string 20010813 (1.0 RC2) +>>>>>>(84.b+120) string 20010816 (RC2 - Garf tuned v1) +>>>>>>(84.b+120) string 20011014 (RC2 - Garf tuned v2) +>>>>>>(84.b+120) string 20011217 (1.0 RC3) +>>>>>>(84.b+120) string 20011231 (1.0 RC3) +# Some pre-1.0 CVS snapshots still had "Xiphphorus"... +>>>>>>(84.b+120) string >20011231 (pre-1.0 CVS) +# For the 1.0 release, Xiphophorus is replaced by Xiph.Org +>>>>(84.b+96) string/c Xiph.Org\ libVorbis\ I \b, created by: Xiph.Org libVorbis I +>>>>>(84.b+117) string >00000000 +>>>>>>(84.b+117) string <20020717 (pre-1.0 CVS) +>>>>>>(84.b+117) string 20020717 (1.0) +>>>>>>(84.b+117) string 20030909 (1.0.1) +>>>>>>(84.b+117) string 20040629 (1.1.0 RC1) |