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Diffstat (limited to 'magic/Magdir/dolby')
| -rw-r--r-- | magic/Magdir/dolby | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/magic/Magdir/dolby b/magic/Magdir/dolby new file mode 100644 index 0000000..8c61d62 --- /dev/null +++ b/magic/Magdir/dolby @@ -0,0 +1,61 @@ + +#------------------------------------------------------------------------------ +# $File: dolby,v 1.6 2012/10/31 13:39:42 christos Exp $ +# ATSC A/53 aka AC-3 aka Dolby Digital <ashitaka@gmx.at> +# from http://www.atsc.org/standards/a_52a.pdf +# corrections, additions, etc. are always welcome! +# +# syncword +0 beshort 0x0b77 ATSC A/52 aka AC-3 aka Dolby Digital stream, +!:mime audio/vnd.dolby.dd-raw +# fscod +>4 byte&0xc0 0x00 48 kHz, +>4 byte&0xc0 0x40 44.1 kHz, +>4 byte&0xc0 0x80 32 kHz, +# is this one used for 96 kHz? +>4 byte&0xc0 0xc0 reserved frequency, +# +>5 byte&7 = 0 \b, complete main (CM) +>5 byte&7 = 1 \b, music and effects (ME) +>5 byte&7 = 2 \b, visually impaired (VI) +>5 byte&7 = 3 \b, hearing impaired (HI) +>5 byte&7 = 4 \b, dialogue (D) +>5 byte&7 = 5 \b, commentary (C) +>5 byte&7 = 6 \b, emergency (E) +# acmod +>6 byte&0xe0 0x00 1+1 front, +>6 byte&0xe0 0x20 1 front/0 rear, +>6 byte&0xe0 0x40 2 front/0 rear, +>6 byte&0xe0 0x60 3 front/0 rear, +>6 byte&0xe0 0x80 2 front/1 rear, +>6 byte&0xe0 0xa0 3 front/1 rear, +>6 byte&0xe0 0xc0 2 front/2 rear, +>6 byte&0xe0 0xe0 3 front/2 rear, +# lfeon (these may be incorrect) +>7 byte&0x40 0x00 LFE off, +>7 byte&0x40 0x40 LFE on, +# +>4 byte&0x3e = 0x00 \b, 32 kbit/s +>4 byte&0x3e = 0x02 \b, 40 kbit/s +>4 byte&0x3e = 0x04 \b, 48 kbit/s +>4 byte&0x3e = 0x06 \b, 56 kbit/s +>4 byte&0x3e = 0x08 \b, 64 kbit/s +>4 byte&0x3e = 0x0a \b, 80 kbit/s +>4 byte&0x3e = 0x0c \b, 96 kbit/s +>4 byte&0x3e = 0x0e \b, 112 kbit/s +>4 byte&0x3e = 0x10 \b, 128 kbit/s +>4 byte&0x3e = 0x12 \b, 160 kbit/s +>4 byte&0x3e = 0x14 \b, 192 kbit/s +>4 byte&0x3e = 0x16 \b, 224 kbit/s +>4 byte&0x3e = 0x18 \b, 256 kbit/s +>4 byte&0x3e = 0x1a \b, 320 kbit/s +>4 byte&0x3e = 0x1c \b, 384 kbit/s +>4 byte&0x3e = 0x1e \b, 448 kbit/s +>4 byte&0x3e = 0x20 \b, 512 kbit/s +>4 byte&0x3e = 0x22 \b, 576 kbit/s +>4 byte&0x3e = 0x24 \b, 640 kbit/s +# dsurmod (these may be incorrect) +>6 beshort&0x0180 0x0000 Dolby Surround not indicated +>6 beshort&0x0180 0x0080 not Dolby Surround encoded +>6 beshort&0x0180 0x0100 Dolby Surround encoded +>6 beshort&0x0180 0x0180 reserved Dolby Surround mode |