falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
16539 Commits
32 Branches
303MB
Tree: c136ece9b3
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'c136ece9b3'
${ noResults }
FFmpeg/libavcodec/dvdata.h

756 lines
28KB
Raw Blame History 

  1. /*

  2.  * Constants for DV codec

  3.  * Copyright (c) 2002 Fabrice Bellard.

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. /**

  23.  * @file dvdata.h

  24.  * Constants for DV codec.

  25.  */

  26. 

  27. #ifndef AVCODEC_DVDATA_H

  28. #define AVCODEC_DVDATA_H

  29. 

  30. #include "libavutil/rational.h"

  31. #include "avcodec.h"

  32. 

  33. typedef struct DVwork_chunk {

  34.     uint16_t  buf_offset;

  35.     uint16_t  mb_coordinates[5];

  36. } DVwork_chunk;

  37. 

  38. /*

  39.  * DVprofile is used to express the differences between various

  40.  * DV flavors. For now it's primarily used for differentiating

  41.  * 525/60 and 625/50, but the plans are to use it for various

  42.  * DV specs as well (e.g. SMPTE314M vs. IEC 61834).

  43.  */

  44. typedef struct DVprofile {

  45.     int              dsf;                   /* value of the dsf in the DV header */

  46.     int              video_stype;           /* stype for VAUX source pack */

  47.     int              frame_size;            /* total size of one frame in bytes */

  48.     int              difseg_size;           /* number of DIF segments per DIF channel */

  49.     int              n_difchan;             /* number of DIF channels per frame */

  50.     AVRational       time_base;             /* 1/framerate */

  51.     int              ltc_divisor;           /* FPS from the LTS standpoint */

  52.     int              height;                /* picture height in pixels */

  53.     int              width;                 /* picture width in pixels */

  54.     AVRational       sar[2];                /* sample aspect ratios for 4:3 and 16:9 */

  55.     DVwork_chunk    *work_chunks;           /* each thread gets its own chunk of frame to work on */

  56.     enum PixelFormat pix_fmt;               /* picture pixel format */

  57.     int              bpm;                   /* blocks per macroblock */

  58.     const uint8_t   *block_sizes;           /* AC block sizes, in bits */

  59.     int              audio_stride;          /* size of audio_shuffle table */

  60.     int              audio_min_samples[3];  /* min amount of audio samples */

  61.                                             /* for 48kHz, 44.1kHz and 32kHz */

  62.     int              audio_samples_dist[5]; /* how many samples are supposed to be */

  63.                                             /* in each frame in a 5 frames window */

  64.     const uint8_t  (*audio_shuffle)[9];     /* PCM shuffling table */

  65. } DVprofile;

  66. 

  67. #define NB_DV_VLC 409

  68. 

  69. /*

  70.  * There's a catch about the following three tables: the mapping they establish

  71.  * between (run, level) and vlc is not 1-1. So you have to watch out for that

  72.  * when building misc. tables. E.g. (1, 0) can be either 0x7cf or 0x1f82.

  73.  */

  74. static const uint16_t dv_vlc_bits[409] = {

  75.  0x0000, 0x0002, 0x0007, 0x0008, 0x0009, 0x0014, 0x0015, 0x0016,

  76.  0x0017, 0x0030, 0x0031, 0x0032, 0x0033, 0x0068, 0x0069, 0x006a,

  77.  0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x00e0, 0x00e1, 0x00e2,

  78.  0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea,

  79.  0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x01e0, 0x01e1, 0x01e2,

  80.  0x01e3, 0x01e4, 0x01e5, 0x01e6, 0x01e7, 0x01e8, 0x01e9, 0x01ea,

  81.  0x01eb, 0x01ec, 0x01ed, 0x01ee, 0x01ef, 0x03e0, 0x03e1, 0x03e2,

  82.  0x03e3, 0x03e4, 0x03e5, 0x03e6, 0x07ce, 0x07cf, 0x07d0, 0x07d1,

  83.  0x07d2, 0x07d3, 0x07d4, 0x07d5, 0x0fac, 0x0fad, 0x0fae, 0x0faf,

  84.  0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,

  85.  0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,

  86.  0x1f80, 0x1f81, 0x1f82, 0x1f83, 0x1f84, 0x1f85, 0x1f86, 0x1f87,

  87.  0x1f88, 0x1f89, 0x1f8a, 0x1f8b, 0x1f8c, 0x1f8d, 0x1f8e, 0x1f8f,

  88.  0x1f90, 0x1f91, 0x1f92, 0x1f93, 0x1f94, 0x1f95, 0x1f96, 0x1f97,

  89.  0x1f98, 0x1f99, 0x1f9a, 0x1f9b, 0x1f9c, 0x1f9d, 0x1f9e, 0x1f9f,

  90.  0x1fa0, 0x1fa1, 0x1fa2, 0x1fa3, 0x1fa4, 0x1fa5, 0x1fa6, 0x1fa7,

  91.  0x1fa8, 0x1fa9, 0x1faa, 0x1fab, 0x1fac, 0x1fad, 0x1fae, 0x1faf,

  92.  0x1fb0, 0x1fb1, 0x1fb2, 0x1fb3, 0x1fb4, 0x1fb5, 0x1fb6, 0x1fb7,

  93.  0x1fb8, 0x1fb9, 0x1fba, 0x1fbb, 0x1fbc, 0x1fbd, 0x1fbe, 0x1fbf,

  94.  0x7f00, 0x7f01, 0x7f02, 0x7f03, 0x7f04, 0x7f05, 0x7f06, 0x7f07,

  95.  0x7f08, 0x7f09, 0x7f0a, 0x7f0b, 0x7f0c, 0x7f0d, 0x7f0e, 0x7f0f,

  96.  0x7f10, 0x7f11, 0x7f12, 0x7f13, 0x7f14, 0x7f15, 0x7f16, 0x7f17,

  97.  0x7f18, 0x7f19, 0x7f1a, 0x7f1b, 0x7f1c, 0x7f1d, 0x7f1e, 0x7f1f,

  98.  0x7f20, 0x7f21, 0x7f22, 0x7f23, 0x7f24, 0x7f25, 0x7f26, 0x7f27,

  99.  0x7f28, 0x7f29, 0x7f2a, 0x7f2b, 0x7f2c, 0x7f2d, 0x7f2e, 0x7f2f,

  100.  0x7f30, 0x7f31, 0x7f32, 0x7f33, 0x7f34, 0x7f35, 0x7f36, 0x7f37,

  101.  0x7f38, 0x7f39, 0x7f3a, 0x7f3b, 0x7f3c, 0x7f3d, 0x7f3e, 0x7f3f,

  102.  0x7f40, 0x7f41, 0x7f42, 0x7f43, 0x7f44, 0x7f45, 0x7f46, 0x7f47,

  103.  0x7f48, 0x7f49, 0x7f4a, 0x7f4b, 0x7f4c, 0x7f4d, 0x7f4e, 0x7f4f,

  104.  0x7f50, 0x7f51, 0x7f52, 0x7f53, 0x7f54, 0x7f55, 0x7f56, 0x7f57,

  105.  0x7f58, 0x7f59, 0x7f5a, 0x7f5b, 0x7f5c, 0x7f5d, 0x7f5e, 0x7f5f,

  106.  0x7f60, 0x7f61, 0x7f62, 0x7f63, 0x7f64, 0x7f65, 0x7f66, 0x7f67,

  107.  0x7f68, 0x7f69, 0x7f6a, 0x7f6b, 0x7f6c, 0x7f6d, 0x7f6e, 0x7f6f,

  108.  0x7f70, 0x7f71, 0x7f72, 0x7f73, 0x7f74, 0x7f75, 0x7f76, 0x7f77,

  109.  0x7f78, 0x7f79, 0x7f7a, 0x7f7b, 0x7f7c, 0x7f7d, 0x7f7e, 0x7f7f,

  110.  0x7f80, 0x7f81, 0x7f82, 0x7f83, 0x7f84, 0x7f85, 0x7f86, 0x7f87,

  111.  0x7f88, 0x7f89, 0x7f8a, 0x7f8b, 0x7f8c, 0x7f8d, 0x7f8e, 0x7f8f,

  112.  0x7f90, 0x7f91, 0x7f92, 0x7f93, 0x7f94, 0x7f95, 0x7f96, 0x7f97,

  113.  0x7f98, 0x7f99, 0x7f9a, 0x7f9b, 0x7f9c, 0x7f9d, 0x7f9e, 0x7f9f,

  114.  0x7fa0, 0x7fa1, 0x7fa2, 0x7fa3, 0x7fa4, 0x7fa5, 0x7fa6, 0x7fa7,

  115.  0x7fa8, 0x7fa9, 0x7faa, 0x7fab, 0x7fac, 0x7fad, 0x7fae, 0x7faf,

  116.  0x7fb0, 0x7fb1, 0x7fb2, 0x7fb3, 0x7fb4, 0x7fb5, 0x7fb6, 0x7fb7,

  117.  0x7fb8, 0x7fb9, 0x7fba, 0x7fbb, 0x7fbc, 0x7fbd, 0x7fbe, 0x7fbf,

  118.  0x7fc0, 0x7fc1, 0x7fc2, 0x7fc3, 0x7fc4, 0x7fc5, 0x7fc6, 0x7fc7,

  119.  0x7fc8, 0x7fc9, 0x7fca, 0x7fcb, 0x7fcc, 0x7fcd, 0x7fce, 0x7fcf,

  120.  0x7fd0, 0x7fd1, 0x7fd2, 0x7fd3, 0x7fd4, 0x7fd5, 0x7fd6, 0x7fd7,

  121.  0x7fd8, 0x7fd9, 0x7fda, 0x7fdb, 0x7fdc, 0x7fdd, 0x7fde, 0x7fdf,

  122.  0x7fe0, 0x7fe1, 0x7fe2, 0x7fe3, 0x7fe4, 0x7fe5, 0x7fe6, 0x7fe7,

  123.  0x7fe8, 0x7fe9, 0x7fea, 0x7feb, 0x7fec, 0x7fed, 0x7fee, 0x7fef,

  124.  0x7ff0, 0x7ff1, 0x7ff2, 0x7ff3, 0x7ff4, 0x7ff5, 0x7ff6, 0x7ff7,

  125.  0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff,

  126.  0x0006,

  127. };

  128. 

  129. static const uint8_t dv_vlc_len[409] = {

  130.   2,  3,  4,  4,  4,  5,  5,  5,

  131.   5,  6,  6,  6,  6,  7,  7,  7,

  132.   7,  7,  7,  7,  7,  8,  8,  8,

  133.   8,  8,  8,  8,  8,  8,  8,  8,

  134.   8,  8,  8,  8,  8,  9,  9,  9,

  135.   9,  9,  9,  9,  9,  9,  9,  9,

  136.   9,  9,  9,  9,  9, 10, 10, 10,

  137.  10, 10, 10, 10, 11, 11, 11, 11,

  138.  11, 11, 11, 11, 12, 12, 12, 12,

  139.  12, 12, 12, 12, 12, 12, 12, 12,

  140.  12, 12, 12, 12, 12, 12, 12, 12,

  141.  13, 13, 13, 13, 13, 13, 13, 13,

  142.  13, 13, 13, 13, 13, 13, 13, 13,

  143.  13, 13, 13, 13, 13, 13, 13, 13,

  144.  13, 13, 13, 13, 13, 13, 13, 13,

  145.  13, 13, 13, 13, 13, 13, 13, 13,

  146.  13, 13, 13, 13, 13, 13, 13, 13,

  147.  13, 13, 13, 13, 13, 13, 13, 13,

  148.  13, 13, 13, 13, 13, 13, 13, 13,

  149.  15, 15, 15, 15, 15, 15, 15, 15,

  150.  15, 15, 15, 15, 15, 15, 15, 15,

  151.  15, 15, 15, 15, 15, 15, 15, 15,

  152.  15, 15, 15, 15, 15, 15, 15, 15,

  153.  15, 15, 15, 15, 15, 15, 15, 15,

  154.  15, 15, 15, 15, 15, 15, 15, 15,

  155.  15, 15, 15, 15, 15, 15, 15, 15,

  156.  15, 15, 15, 15, 15, 15, 15, 15,

  157.  15, 15, 15, 15, 15, 15, 15, 15,

  158.  15, 15, 15, 15, 15, 15, 15, 15,

  159.  15, 15, 15, 15, 15, 15, 15, 15,

  160.  15, 15, 15, 15, 15, 15, 15, 15,

  161.  15, 15, 15, 15, 15, 15, 15, 15,

  162.  15, 15, 15, 15, 15, 15, 15, 15,

  163.  15, 15, 15, 15, 15, 15, 15, 15,

  164.  15, 15, 15, 15, 15, 15, 15, 15,

  165.  15, 15, 15, 15, 15, 15, 15, 15,

  166.  15, 15, 15, 15, 15, 15, 15, 15,

  167.  15, 15, 15, 15, 15, 15, 15, 15,

  168.  15, 15, 15, 15, 15, 15, 15, 15,

  169.  15, 15, 15, 15, 15, 15, 15, 15,

  170.  15, 15, 15, 15, 15, 15, 15, 15,

  171.  15, 15, 15, 15, 15, 15, 15, 15,

  172.  15, 15, 15, 15, 15, 15, 15, 15,

  173.  15, 15, 15, 15, 15, 15, 15, 15,

  174.  15, 15, 15, 15, 15, 15, 15, 15,

  175.  15, 15, 15, 15, 15, 15, 15, 15,

  176.  15, 15, 15, 15, 15, 15, 15, 15,

  177.  15, 15, 15, 15, 15, 15, 15, 15,

  178.  15, 15, 15, 15, 15, 15, 15, 15,

  179.  15, 15, 15, 15, 15, 15, 15, 15,

  180.  15, 15, 15, 15, 15, 15, 15, 15,

  181.   4,

  182. };

  183. 

  184. static const uint8_t dv_vlc_run[409] = {

  185.   0,  0,  1,  0,  0,  2,  1,  0,

  186.   0,  3,  4,  0,  0,  5,  6,  2,

  187.   1,  1,  0,  0,  0,  7,  8,  9,

  188.  10,  3,  4,  2,  1,  1,  1,  0,

  189.   0,  0,  0,  0,  0, 11, 12, 13,

  190.  14,  5,  6,  3,  4,  2,  2,  1,

  191.   0,  0,  0,  0,  0,  5,  3,  3,

  192.   2,  1,  1,  1,  0,  1,  6,  4,

  193.   3,  1,  1,  1,  2,  3,  4,  5,

  194.   7,  8,  9, 10,  7,  8,  4,  3,

  195.   2,  2,  2,  2,  2,  1,  1,  1,

  196.   0,  1,  2,  3,  4,  5,  6,  7,

  197.   8,  9, 10, 11, 12, 13, 14, 15,

  198.  16, 17, 18, 19, 20, 21, 22, 23,

  199.  24, 25, 26, 27, 28, 29, 30, 31,

  200.  32, 33, 34, 35, 36, 37, 38, 39,

  201.  40, 41, 42, 43, 44, 45, 46, 47,

  202.  48, 49, 50, 51, 52, 53, 54, 55,

  203.  56, 57, 58, 59, 60, 61, 62, 63,

  204.   0,  0,  0,  0,  0,  0,  0,  0,

  205.   0,  0,  0,  0,  0,  0,  0,  0,

  206.   0,  0,  0,  0,  0,  0,  0,  0,

  207.   0,  0,  0,  0,  0,  0,  0,  0,

  208.   0,  0,  0,  0,  0,  0,  0,  0,

  209.   0,  0,  0,  0,  0,  0,  0,  0,

  210.   0,  0,  0,  0,  0,  0,  0,  0,

  211.   0,  0,  0,  0,  0,  0,  0,  0,

  212.   0,  0,  0,  0,  0,  0,  0,  0,

  213.   0,  0,  0,  0,  0,  0,  0,  0,

  214.   0,  0,  0,  0,  0,  0,  0,  0,

  215.   0,  0,  0,  0,  0,  0,  0,  0,

  216.   0,  0,  0,  0,  0,  0,  0,  0,

  217.   0,  0,  0,  0,  0,  0,  0,  0,

  218.   0,  0,  0,  0,  0,  0,  0,  0,

  219.   0,  0,  0,  0,  0,  0,  0,  0,

  220.   0,  0,  0,  0,  0,  0,  0,  0,

  221.   0,  0,  0,  0,  0,  0,  0,  0,

  222.   0,  0,  0,  0,  0,  0,  0,  0,

  223.   0,  0,  0,  0,  0,  0,  0,  0,

  224.   0,  0,  0,  0,  0,  0,  0,  0,

  225.   0,  0,  0,  0,  0,  0,  0,  0,

  226.   0,  0,  0,  0,  0,  0,  0,  0,

  227.   0,  0,  0,  0,  0,  0,  0,  0,

  228.   0,  0,  0,  0,  0,  0,  0,  0,

  229.   0,  0,  0,  0,  0,  0,  0,  0,

  230.   0,  0,  0,  0,  0,  0,  0,  0,

  231.   0,  0,  0,  0,  0,  0,  0,  0,

  232.   0,  0,  0,  0,  0,  0,  0,  0,

  233.   0,  0,  0,  0,  0,  0,  0,  0,

  234.   0,  0,  0,  0,  0,  0,  0,  0,

  235.   0,  0,  0,  0,  0,  0,  0,  0,

  236. 127,

  237. };

  238. 

  239. static const uint8_t dv_vlc_level[409] = {

  240.    1,   2,   1,   3,   4,   1,   2,   5,

  241.    6,   1,   1,   7,   8,   1,   1,   2,

  242.    3,   4,   9,  10,  11,   1,   1,   1,

  243.    1,   2,   2,   3,   5,   6,   7,  12,

  244.   13,  14,  15,  16,  17,   1,   1,   1,

  245.    1,   2,   2,   3,   3,   4,   5,   8,

  246.   18,  19,  20,  21,  22,   3,   4,   5,

  247.    6,   9,  10,  11,   0,   0,   3,   4,

  248.    6,  12,  13,  14,   0,   0,   0,   0,

  249.    2,   2,   2,   2,   3,   3,   5,   7,

  250.    7,   8,   9,  10,  11,  15,  16,  17,

  251.    0,   0,   0,   0,   0,   0,   0,   0,

  252.    0,   0,   0,   0,   0,   0,   0,   0,

  253.    0,   0,   0,   0,   0,   0,   0,   0,

  254.    0,   0,   0,   0,   0,   0,   0,   0,

  255.    0,   0,   0,   0,   0,   0,   0,   0,

  256.    0,   0,   0,   0,   0,   0,   0,   0,

  257.    0,   0,   0,   0,   0,   0,   0,   0,

  258.    0,   0,   0,   0,   0,   0,   0,   0,

  259.    0,   1,   2,   3,   4,   5,   6,   7,

  260.    8,   9,  10,  11,  12,  13,  14,  15,

  261.   16,  17,  18,  19,  20,  21,  22,  23,

  262.   24,  25,  26,  27,  28,  29,  30,  31,

  263.   32,  33,  34,  35,  36,  37,  38,  39,

  264.   40,  41,  42,  43,  44,  45,  46,  47,

  265.   48,  49,  50,  51,  52,  53,  54,  55,

  266.   56,  57,  58,  59,  60,  61,  62,  63,

  267.   64,  65,  66,  67,  68,  69,  70,  71,

  268.   72,  73,  74,  75,  76,  77,  78,  79,

  269.   80,  81,  82,  83,  84,  85,  86,  87,

  270.   88,  89,  90,  91,  92,  93,  94,  95,

  271.   96,  97,  98,  99, 100, 101, 102, 103,

  272.  104, 105, 106, 107, 108, 109, 110, 111,

  273.  112, 113, 114, 115, 116, 117, 118, 119,

  274.  120, 121, 122, 123, 124, 125, 126, 127,

  275.  128, 129, 130, 131, 132, 133, 134, 135,

  276.  136, 137, 138, 139, 140, 141, 142, 143,

  277.  144, 145, 146, 147, 148, 149, 150, 151,

  278.  152, 153, 154, 155, 156, 157, 158, 159,

  279.  160, 161, 162, 163, 164, 165, 166, 167,

  280.  168, 169, 170, 171, 172, 173, 174, 175,

  281.  176, 177, 178, 179, 180, 181, 182, 183,

  282.  184, 185, 186, 187, 188, 189, 190, 191,

  283.  192, 193, 194, 195, 196, 197, 198, 199,

  284.  200, 201, 202, 203, 204, 205, 206, 207,

  285.  208, 209, 210, 211, 212, 213, 214, 215,

  286.  216, 217, 218, 219, 220, 221, 222, 223,

  287.  224, 225, 226, 227, 228, 229, 230, 231,

  288.  232, 233, 234, 235, 236, 237, 238, 239,

  289.  240, 241, 242, 243, 244, 245, 246, 247,

  290.  248, 249, 250, 251, 252, 253, 254, 255,

  291.    0,

  292. };

  293. 

  294. /* unquant tables (not used directly) */

  295. static const uint8_t dv_quant_shifts[22][4] = {

  296.   { 3,3,4,4 },

  297.   { 3,3,4,4 },

  298.   { 2,3,3,4 },

  299.   { 2,3,3,4 },

  300.   { 2,2,3,3 },

  301.   { 2,2,3,3 },

  302.   { 1,2,2,3 },

  303.   { 1,2,2,3 },

  304.   { 1,1,2,2 },

  305.   { 1,1,2,2 },

  306.   { 0,1,1,2 },

  307.   { 0,1,1,2 },

  308.   { 0,0,1,1 },

  309.   { 0,0,1,1 },

  310.   { 0,0,0,1 },

  311.   { 0,0,0,0 },

  312.   { 0,0,0,0 },

  313.   { 0,0,0,0 },

  314.   { 0,0,0,0 },

  315.   { 0,0,0,0 },

  316.   { 0,0,0,0 },

  317.   { 0,0,0,0 },

  318. };

  319. 

  320. static const uint8_t dv_quant_offset[4] = { 6,  3,  0,  1 };

  321. static const uint8_t dv_quant_areas[4]  = { 6, 21, 43, 64 };

  322. 

  323. /* quantization quanta by QNO for DV100 */

  324. static const uint8_t dv100_qstep[16] = {

  325.     1, /* QNO = 0 and 1 both have no quantization */

  326.     1,

  327.     2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52

  328. };

  329. 

  330. /* DV25/50 DCT coefficient weights and inverse weights */

  331. /* created by dvtables.py */

  332. static const int dv_weight_bits = 18;

  333. static const int dv_weight_88[64] = {

  334.  131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,

  335.  237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,

  336.  224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,

  337.  212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,

  338.  206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,

  339.  200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,

  340.  174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,

  341.  170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,

  342. };

  343. static const int dv_weight_248[64] = {

  344.  131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,

  345.  224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,

  346.  211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,

  347.  242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,

  348.  200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,

  349.  229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,

  350.  175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,

  351.  195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,

  352. };

  353. static const int dv_iweight_bits = 14;

  354. static const int dv_iweight_88[64] = {

  355.  32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,

  356.  18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,

  357.  19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,

  358.  20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,

  359.  20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,

  360.  21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,

  361.  24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,

  362.  25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,

  363. };

  364. static const int dv_iweight_248[64] = {

  365.  32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,

  366.  19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,

  367.  20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,

  368.  17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,

  369.  21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,

  370.  18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,

  371.  24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,

  372.  22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,

  373. };

  374. 

  375. /**

  376.  * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).

  377.  */

  378. static const int dv_iweight_1080_y[64] = {

  379.     128,  16,  16,  17,  17,  17,  18,  18,

  380.      18,  18,  18,  18,  19,  18,  18,  19,

  381.      19,  19,  19,  19,  19,  42,  38,  40,

  382.      40,  40,  38,  42,  44,  43,  41,  41,

  383.      41,  41,  43,  44,  45,  45,  42,  42,

  384.      42,  45,  45,  48,  46,  43,  43,  46,

  385.      48,  49,  48,  44,  48,  49, 101,  98,

  386.      98, 101, 104, 109, 104, 116, 116, 123,

  387. };

  388. static const int dv_iweight_1080_c[64] = {

  389.     128,  16,  16,  17,  17,  17,  25,  25,

  390.      25,  25,  26,  25,  26,  25,  26,  26,

  391.      26,  27,  27,  26,  26,  42,  38,  40,

  392.      40,  40,  38,  42,  44,  43,  41,  41,

  393.      41,  41,  43,  44,  91,  91,  84,  84,

  394.      84,  91,  91,  96,  93,  86,  86,  93,

  395.      96, 197, 191, 177, 191, 197, 203, 197,

  396.     197, 203, 209, 219, 209, 232, 232, 246,

  397. };

  398. static const int dv_iweight_720_y[64] = {

  399.     128,  16,  16,  17,  17,  17,  18,  18,

  400.      18,  18,  18,  18,  19,  18,  18,  19,

  401.      19,  19,  19,  19,  19,  42,  38,  40,

  402.      40,  40,  38,  42,  44,  43,  41,  41,

  403.      41,  41,  43,  44,  68,  68,  63,  63,

  404.      63,  68,  68,  96,  92,  86,  86,  92,

  405.      96,  98,  96,  88,  96,  98, 202, 196,

  406.     196, 202, 208, 218, 208, 232, 232, 246,

  407. };

  408. static const int dv_iweight_720_c[64] = {

  409.     128,  24,  24,  26,  26,  26,  36,  36,

  410.      36,  36,  36,  36,  38,  36,  36,  38,

  411.      38,  38,  38,  38,  38,  84,  76,  80,

  412.      80,  80,  76,  84,  88,  86,  82,  82,

  413.      82,  82,  86,  88, 182, 182, 168, 168,

  414.     168, 182, 182, 192, 186, 192, 172, 186,

  415.     192, 394, 382, 354, 382, 394, 406, 394,

  416.     394, 406, 418, 438, 418, 464, 464, 492,

  417. };

  418. 

  419. static const uint8_t dv_audio_shuffle525[10][9] = {

  420.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */

  421.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },

  422.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },

  423.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },

  424.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },

  425. 

  426.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */

  427.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },

  428.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },

  429.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },

  430.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },

  431. };

  432. 

  433. static const uint8_t dv_audio_shuffle625[12][9] = {

  434.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */

  435.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},

  436.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},

  437.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},

  438.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},

  439.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},

  440. 

  441.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */

  442.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},

  443.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},

  444.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},

  445.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},

  446.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},

  447. };

  448. 

  449. static const av_unused int dv_audio_frequency[3] = {

  450.     48000, 44100, 32000,

  451. };

  452. 

  453. /* macroblock bit budgets */

  454. static const uint8_t block_sizes_dv2550[8] = {

  455.     112, 112, 112, 112, 80, 80, 0, 0,

  456. };

  457. 

  458. static const uint8_t block_sizes_dv100[8] = {

  459.     80, 80, 80, 80, 80, 80, 64, 64,

  460. };

  461. 

  462. static DVwork_chunk work_chunks_dv25pal   [1*12*27];

  463. static DVwork_chunk work_chunks_dv25pal411[1*12*27];

  464. static DVwork_chunk work_chunks_dv25ntsc  [1*10*27];

  465. static DVwork_chunk work_chunks_dv50pal   [2*12*27];

  466. static DVwork_chunk work_chunks_dv50ntsc  [2*10*27];

  467. static DVwork_chunk work_chunks_dv100palp [2*12*27];

  468. static DVwork_chunk work_chunks_dv100ntscp[2*10*27];

  469. static DVwork_chunk work_chunks_dv100pali [4*12*27];

  470. static DVwork_chunk work_chunks_dv100ntsci[4*10*27];

  471. 

  472. static const DVprofile dv_profiles[] = {

  473.     { .dsf = 0,

  474.       .video_stype = 0x0,

  475.       .frame_size = 120000,        /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */

  476.       .difseg_size = 10,

  477.       .n_difchan = 1,

  478.       .time_base = { 1001, 30000 },

  479.       .ltc_divisor = 30,

  480.       .height = 480,

  481.       .width = 720,

  482.       .sar = {{10, 11}, {40, 33}},

  483.       .work_chunks = &work_chunks_dv25ntsc[0],

  484.       .pix_fmt = PIX_FMT_YUV411P,

  485.       .bpm = 6,

  486.       .block_sizes = block_sizes_dv2550,

  487.       .audio_stride = 90,

  488.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */

  489.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */

  490.       .audio_shuffle = dv_audio_shuffle525,

  491.     },

  492.     { .dsf = 1,

  493.       .video_stype = 0x0,

  494.       .frame_size = 144000,        /* IEC 61834 - 625/50 (PAL) */

  495.       .difseg_size = 12,

  496.       .n_difchan = 1,

  497.       .time_base = { 1, 25 },

  498.       .ltc_divisor = 25,

  499.       .height = 576,

  500.       .width = 720,

  501.       .sar = {{59, 54}, {118, 81}},

  502.       .work_chunks = &work_chunks_dv25pal[0],

  503.       .pix_fmt = PIX_FMT_YUV420P,

  504.       .bpm = 6,

  505.       .block_sizes = block_sizes_dv2550,

  506.       .audio_stride = 108,

  507.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */

  508.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  509.       .audio_shuffle = dv_audio_shuffle625,

  510.     },

  511.     { .dsf = 1,

  512.       .video_stype = 0x0,

  513.       .frame_size = 144000,        /* SMPTE-314M - 625/50 (PAL) */

  514.       .difseg_size = 12,

  515.       .n_difchan = 1,

  516.       .time_base = { 1, 25 },

  517.       .ltc_divisor = 25,

  518.       .height = 576,

  519.       .width = 720,

  520.       .sar = {{59, 54}, {118, 81}},

  521.       .work_chunks = &work_chunks_dv25pal411[0],

  522.       .pix_fmt = PIX_FMT_YUV411P,

  523.       .bpm = 6,

  524.       .block_sizes = block_sizes_dv2550,

  525.       .audio_stride = 108,

  526.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */

  527.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  528.       .audio_shuffle = dv_audio_shuffle625,

  529.     },

  530.     { .dsf = 0,

  531.       .video_stype = 0x4,

  532.       .frame_size = 240000,        /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */

  533.       .difseg_size = 10,           /* also known as "DVCPRO50" */

  534.       .n_difchan = 2,

  535.       .time_base = { 1001, 30000 },

  536.       .ltc_divisor = 30,

  537.       .height = 480,

  538.       .width = 720,

  539.       .sar = {{10, 11}, {40, 33}},

  540.       .work_chunks = &work_chunks_dv50ntsc[0],

  541.       .pix_fmt = PIX_FMT_YUV422P,

  542.       .bpm = 6,

  543.       .block_sizes = block_sizes_dv2550,

  544.       .audio_stride = 90,

  545.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */

  546.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */

  547.       .audio_shuffle = dv_audio_shuffle525,

  548.     },

  549.     { .dsf = 1,

  550.       .video_stype = 0x4,

  551.       .frame_size = 288000,        /* SMPTE-314M - 625/50 (PAL) 50 Mbps */

  552.       .difseg_size = 12,           /* also known as "DVCPRO50" */

  553.       .n_difchan = 2,

  554.       .time_base = { 1, 25 },

  555.       .ltc_divisor = 25,

  556.       .height = 576,

  557.       .width = 720,

  558.       .sar = {{59, 54}, {118, 81}},

  559.       .work_chunks = &work_chunks_dv50pal[0],

  560.       .pix_fmt = PIX_FMT_YUV422P,

  561.       .bpm = 6,

  562.       .block_sizes = block_sizes_dv2550,

  563.       .audio_stride = 108,

  564.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */

  565.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  566.       .audio_shuffle = dv_audio_shuffle625,

  567.     },

  568.     { .dsf = 0,

  569.       .video_stype = 0x14,

  570.       .frame_size = 480000,        /* SMPTE-370M - 1080i60 100 Mbps */

  571.       .difseg_size = 10,           /* also known as "DVCPRO HD" */

  572.       .n_difchan = 4,

  573.       .time_base = { 1001, 30000 },

  574.       .ltc_divisor = 30,

  575.       .height = 1080,

  576.       .width = 1280,

  577.       .sar = {{1, 1}, {1, 1}},

  578.       .work_chunks = &work_chunks_dv100ntsci[0],

  579.       .pix_fmt = PIX_FMT_YUV422P,

  580.       .bpm = 8,

  581.       .block_sizes = block_sizes_dv100,

  582.       .audio_stride = 90,

  583.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */

  584.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */

  585.       .audio_shuffle = dv_audio_shuffle525,

  586.     },

  587.     { .dsf = 1,

  588.       .video_stype = 0x14,

  589.       .frame_size = 576000,        /* SMPTE-370M - 1080i50 100 Mbps */

  590.       .difseg_size = 12,           /* also known as "DVCPRO HD" */

  591.       .n_difchan = 4,

  592.       .time_base = { 1, 25 },

  593.       .ltc_divisor = 25,

  594.       .height = 1080,

  595.       .width = 1440,

  596.       .sar = {{1, 1}, {1, 1}},

  597.       .work_chunks = &work_chunks_dv100pali[0],

  598.       .pix_fmt = PIX_FMT_YUV422P,

  599.       .bpm = 8,

  600.       .block_sizes = block_sizes_dv100,

  601.       .audio_stride = 108,

  602.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */

  603.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  604.       .audio_shuffle = dv_audio_shuffle625,

  605.     },

  606.     { .dsf = 0,

  607.       .video_stype = 0x18,

  608.       .frame_size = 240000,        /* SMPTE-370M - 720p60 100 Mbps */

  609.       .difseg_size = 10,           /* also known as "DVCPRO HD" */

  610.       .n_difchan = 2,

  611.       .time_base = { 1001, 60000 },

  612.       .ltc_divisor = 60,

  613.       .height = 720,

  614.       .width = 960,

  615.       .sar = {{1, 1}, {1, 1}},

  616.       .work_chunks = &work_chunks_dv100ntscp[0],

  617.       .pix_fmt = PIX_FMT_YUV422P,

  618.       .bpm = 8,

  619.       .block_sizes = block_sizes_dv100,

  620.       .audio_stride = 90,

  621.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */

  622.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */

  623.       .audio_shuffle = dv_audio_shuffle525,

  624.     },

  625.     { .dsf = 1,

  626.       .video_stype = 0x18,

  627.       .frame_size = 288000,        /* SMPTE-370M - 720p50 100 Mbps */

  628.       .difseg_size = 12,           /* also known as "DVCPRO HD" */

  629.       .n_difchan = 2,

  630.       .time_base = { 1, 50 },

  631.       .ltc_divisor = 50,

  632.       .height = 720,

  633.       .width = 960,

  634.       .sar = {{1, 1}, {1, 1}},

  635.       .work_chunks = &work_chunks_dv100palp[0],

  636.       .pix_fmt = PIX_FMT_YUV422P,

  637.       .bpm = 8,

  638.       .block_sizes = block_sizes_dv100,

  639.       .audio_stride = 90,

  640.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */

  641.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */

  642.       .audio_shuffle = dv_audio_shuffle525,

  643.     }

  644. };

  645. 

  646. enum dv_section_type {

  647.      dv_sect_header  = 0x1f,

  648.      dv_sect_subcode = 0x3f,

  649.      dv_sect_vaux    = 0x56,

  650.      dv_sect_audio   = 0x76,

  651.      dv_sect_video   = 0x96,

  652. };

  653. 

  654. enum dv_pack_type {

  655.      dv_header525     = 0x3f, /* see dv_write_pack for important details on */

  656.      dv_header625     = 0xbf, /* these two packs */

  657.      dv_timecode      = 0x13,

  658.      dv_audio_source  = 0x50,

  659.      dv_audio_control = 0x51,

  660.      dv_audio_recdate = 0x52,

  661.      dv_audio_rectime = 0x53,

  662.      dv_video_source  = 0x60,

  663.      dv_video_control = 0x61,

  664.      dv_video_recdate = 0x62,

  665.      dv_video_rectime = 0x63,

  666.      dv_unknown_pack  = 0xff,

  667. };

  668. 

  669. #define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)

  670. #define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))

  671. #define DV_PROFILE_IS_720p50(p)  (((p)->video_stype == 0x18) && ((p)->dsf == 1))

  672. 

  673. /* minimum number of bytes to read from a DV stream in order to

  674.    determine the profile */

  675. #define DV_PROFILE_BYTES (6*80) /* 6 DIF blocks */

  676. 

  677. /**

  678.  * largest possible DV frame, in bytes (1080i50)

  679.  */

  680. #define DV_MAX_FRAME_SIZE 576000

  681. 

  682. /**

  683.  * maximum number of blocks per macroblock in any DV format

  684.  */

  685. #define DV_MAX_BPM 8

  686. 

  687. static inline const DVprofile* dv_frame_profile(const uint8_t* frame)

  688. {

  689.    int i;

  690. 

  691.    int dsf = (frame[3] & 0x80) >> 7;

  692. 

  693.    int stype = frame[80*5 + 48 + 3] & 0x1f;

  694. 

  695.    /* 576i50 25Mbps 4:1:1 is a special case */

  696.    if (dsf == 1 && stype == 0 && frame[5] & 0x07) {

  697.        return &dv_profiles[2];

  698.    }

  699. 

  700.    for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)

  701.        if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)

  702.            return &dv_profiles[i];

  703. 

  704.    return NULL;

  705. }

  706. 

  707. static const DVprofile* dv_codec_profile(AVCodecContext* codec)

  708. {

  709.     int i;

  710. 

  711.     for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)

  712.        if (codec->height  == dv_profiles[i].height  &&

  713.            codec->pix_fmt == dv_profiles[i].pix_fmt &&

  714.            codec->width   == dv_profiles[i].width)

  715.                return &dv_profiles[i];

  716. 

  717.     return NULL;

  718. }

  719. 

  720. static inline int dv_write_dif_id(enum dv_section_type t, uint8_t chan_num,

  721.                                   uint8_t seq_num, uint8_t dif_num,

  722.                                   uint8_t* buf)

  723. {

  724.     buf[0] = (uint8_t)t;       /* Section type */

  725.     buf[1] = (seq_num  << 4) | /* DIF seq number 0-9 for 525/60; 0-11 for 625/50 */

  726.              (chan_num << 3) | /* FSC: for 50Mb/s 0 - first channel; 1 - second */

  727.              7;                /* reserved -- always 1 */

  728.     buf[2] = dif_num;          /* DIF block number Video: 0-134, Audio: 0-8 */

  729.     return 3;

  730. }

  731. 

  732. 

  733. static inline int dv_write_ssyb_id(uint8_t syb_num, uint8_t fr, uint8_t* buf)

  734. {

  735.     if (syb_num == 0 || syb_num == 6) {

  736.         buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */

  737.                  (0  << 4) | /* AP3 (Subcode application ID) */

  738.                  0x0f;       /* reserved -- always 1 */

  739.     }

  740.     else if (syb_num == 11) {

  741.         buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */

  742.                  0x7f;       /* reserved -- always 1 */

  743.     }

  744.     else {

  745.         buf[0] = (fr << 7) | /* FR ID 1 - first half of each channel; 0 - second */

  746.                  (0  << 4) | /* APT (Track application ID) */

  747.                  0x0f;       /* reserved -- always 1 */

  748.     }

  749.     buf[1] = 0xf0 |            /* reserved -- always 1 */

  750.              (syb_num & 0x0f); /* SSYB number 0 - 11   */

  751.     buf[2] = 0xff;             /* reserved -- always 1 */

  752.     return 3;

  753. }

  754. 

  755. #endif /* AVCODEC_DVDATA_H */