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dolby

dolby 2.3 KB
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  1. 

  2. #------------------------------------------------------------------------------
    3. 

  3. # $File: dolby,v 1.9 2019/04/19 00:42:27 christos Exp $
    4. 

  4. # ATSC A/53 aka AC-3 aka Dolby Digital <ashitaka@gmx.at>
    5. 

  5. # from https://www.atsc.org/standards/a_52a.pdf
    6. 

  6. # corrections, additions, etc. are always welcome!
    7. 

  7. #
    8. 

  8. # syncword
    9. 

  9. 0	beshort		0x0b77	ATSC A/52 aka AC-3 aka Dolby Digital stream,
    10. 

  10. # Proposed audio/ac3 RFC/4184
    11. 

  11. !:mime	audio/vnd.dolby.dd-raw
    12. 

  12. # fscod
    13. 

  13. >4	byte&0xc0 = 0x00	48 kHz,
    14. 

  14. >4	byte&0xc0 = 0x40	44.1 kHz,
    15. 

  15. >4	byte&0xc0 = 0x80	32 kHz,
    16. 

  16. # is this one used for 96 kHz?
    17. 

  17. >4	byte&0xc0 = 0xc0	reserved frequency,
    18. 

  18. #
    19. 

  19. >5	byte&0x07 = 0x00	\b, complete main (CM)
    20. 

  20. >5	byte&0x07 = 0x01	\b, music and effects (ME)
    21. 

  21. >5	byte&0x07 = 0x02	\b, visually impaired (VI)
    22. 

  22. >5	byte&0x07 = 0x03	\b, hearing impaired (HI)
    23. 

  23. >5	byte&0x07 = 0x04	\b, dialogue (D)
    24. 

  24. >5	byte&0x07 = 0x05	\b, commentary (C)
    25. 

  25. >5	byte&0x07 = 0x06	\b, emergency (E)
    26. 

  26. >5	beshort&0x07e0  0x0720	\b, voiceover (VO)
    27. 

  27. >5	beshort&0x07e0 >0x0720	\b, karaoke
    28. 

  28. # acmod
    29. 

  29. >6	byte&0xe0 = 0x00	1+1 front,
    30. 

  30. >>6	byte&0x10 = 0x10	LFE on,
    31. 

  31. >6	byte&0xe0 = 0x20	1 front/0 rear,
    32. 

  32. >>6	byte&0x10 = 0x10	LFE on,
    33. 

  33. >6	byte&0xe0 = 0x40	2 front/0 rear,
    34. 

  34. # dsurmod (for stereo only)
    35. 

  35. >>6	byte&0x18 = 0x00	Dolby Surround not indicated
    36. 

  36. >>6	byte&0x18 = 0x08	not Dolby Surround encoded
    37. 

  37. >>6	byte&0x18 = 0x10	Dolby Surround encoded
    38. 

  38. >>6	byte&0x18 = 0x18	reserved Dolby Surround mode
    39. 

  39. >>6	byte&0x04 = 0x04	LFE on,
    40. 

  40. >6	byte&0xe0 = 0x60	3 front/0 rear,
    41. 

  41. >>6	byte&0x04 = 0x04	LFE on,
    42. 

  42. >6	byte&0xe0 = 0x80	2 front/1 rear,
    43. 

  43. >>6	byte&0x04 = 0x04	LFE on,
    44. 

  44. >6	byte&0xe0 = 0xa0	3 front/1 rear,
    45. 

  45. >>6	byte&0x01 = 0x01	LFE on,
    46. 

  46. >6	byte&0xe0 = 0xc0	2 front/2 rear,
    47. 

  47. >>6	byte&0x04 = 0x04	LFE on,
    48. 

  48. >6	byte&0xe0 = 0xe0	3 front/2 rear,
    49. 

  49. >>6	byte&0x01 = 0x01	LFE on,
    50. 

  50. #
    51. 

  51. >4	byte&0x3e = 0x00	\b, 32 kbit/s
    52. 

  52. >4	byte&0x3e = 0x02	\b, 40 kbit/s
    53. 

  53. >4	byte&0x3e = 0x04	\b, 48 kbit/s
    54. 

  54. >4	byte&0x3e = 0x06	\b, 56 kbit/s
    55. 

  55. >4	byte&0x3e = 0x08	\b, 64 kbit/s
    56. 

  56. >4	byte&0x3e = 0x0a	\b, 80 kbit/s
    57. 

  57. >4	byte&0x3e = 0x0c	\b, 96 kbit/s
    58. 

  58. >4	byte&0x3e = 0x0e	\b, 112 kbit/s
    59. 

  59. >4	byte&0x3e = 0x10	\b, 128 kbit/s
    60. 

  60. >4	byte&0x3e = 0x12	\b, 160 kbit/s
    61. 

  61. >4	byte&0x3e = 0x14	\b, 192 kbit/s
    62. 

  62. >4	byte&0x3e = 0x16	\b, 224 kbit/s
    63. 

  63. >4	byte&0x3e = 0x18	\b, 256 kbit/s
    64. 

  64. >4	byte&0x3e = 0x1a	\b, 320 kbit/s
    65. 

  65. >4	byte&0x3e = 0x1c	\b, 384 kbit/s
    66. 

  66. >4	byte&0x3e = 0x1e	\b, 448 kbit/s
    67. 

  67. >4	byte&0x3e = 0x20	\b, 512 kbit/s
    68. 

  68. >4	byte&0x3e = 0x22	\b, 576 kbit/s
    69. 

  69. >4	byte&0x3e = 0x24	\b, 640 kbit/s
    70.