2 #------------------------------------------------------------------------------
3 # $File: dolby,v 1.5 2009/09/19 16:28:08 christos Exp $
4 # ATSC A/53 aka AC-3 aka Dolby Digital <ashitaka@gmx.at>
5 # from http://www.atsc.org/standards/a_52a.pdf
6 # corrections, additions, etc. are always welcome!
9 0 beshort 0x0b77 ATSC A/52 aka AC-3 aka Dolby Digital stream,
11 >4 byte&0xc0 0x00 48 kHz,
12 >4 byte&0xc0 0x40 44.1 kHz,
13 >4 byte&0xc0 0x80 32 kHz,
14 # is this one used for 96 kHz?
15 >4 byte&0xc0 0xc0 reserved frequency,
17 >5 byte&7 = 0 \b, complete main (CM)
18 >5 byte&7 = 1 \b, music and effects (ME)
19 >5 byte&7 = 2 \b, visually impaired (VI)
20 >5 byte&7 = 3 \b, hearing impaired (HI)
21 >5 byte&7 = 4 \b, dialogue (D)
22 >5 byte&7 = 5 \b, commentary (C)
23 >5 byte&7 = 6 \b, emergency (E)
25 >6 byte&0xe0 0x00 1+1 front,
26 >6 byte&0xe0 0x20 1 front/0 rear,
27 >6 byte&0xe0 0x40 2 front/0 rear,
28 >6 byte&0xe0 0x60 3 front/0 rear,
29 >6 byte&0xe0 0x80 2 front/1 rear,
30 >6 byte&0xe0 0xa0 3 front/1 rear,
31 >6 byte&0xe0 0xc0 2 front/2 rear,
32 >6 byte&0xe0 0xe0 3 front/2 rear,
33 # lfeon (these may be incorrect)
34 >7 byte&0x40 0x00 LFE off,
35 >7 byte&0x40 0x40 LFE on,
37 >4 byte&0x3e = 0x00 \b, 32 kbit/s
38 >4 byte&0x3e = 0x02 \b, 40 kbit/s
39 >4 byte&0x3e = 0x04 \b, 48 kbit/s
40 >4 byte&0x3e = 0x06 \b, 56 kbit/s
41 >4 byte&0x3e = 0x08 \b, 64 kbit/s
42 >4 byte&0x3e = 0x0a \b, 80 kbit/s
43 >4 byte&0x3e = 0x0c \b, 96 kbit/s
44 >4 byte&0x3e = 0x0e \b, 112 kbit/s
45 >4 byte&0x3e = 0x10 \b, 128 kbit/s
46 >4 byte&0x3e = 0x12 \b, 160 kbit/s
47 >4 byte&0x3e = 0x14 \b, 192 kbit/s
48 >4 byte&0x3e = 0x16 \b, 224 kbit/s
49 >4 byte&0x3e = 0x18 \b, 256 kbit/s
50 >4 byte&0x3e = 0x1a \b, 320 kbit/s
51 >4 byte&0x3e = 0x1c \b, 384 kbit/s
52 >4 byte&0x3e = 0x1e \b, 448 kbit/s
53 >4 byte&0x3e = 0x20 \b, 512 kbit/s
54 >4 byte&0x3e = 0x22 \b, 576 kbit/s
55 >4 byte&0x3e = 0x24 \b, 640 kbit/s
56 # dsurmod (these may be incorrect)
57 >6 beshort&0x0180 0x0000 Dolby Surround not indicated
58 >6 beshort&0x0180 0x0080 not Dolby Surround encoded
59 >6 beshort&0x0180 0x0100 Dolby Surround encoded
60 >6 beshort&0x0180 0x0180 reserved Dolby Surround mode