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FFmpeg/libavcodec/dvdata.c

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  1. /*

  2.  * Constants for DV codec

  3.  * Copyright (c) 2002 Fabrice Bellard

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav 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.  * Libav 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 Libav; 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

  24.  * Constants for DV codec.

  25.  */

  26. 

  27. #include "libavutil/rational.h"

  28. #include "libavutil/pixdesc.h"

  29. #include "avcodec.h"

  30. #include "dvdata.h"

  31. 

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

  33. const uint8_t ff_dv_quant_shifts[22][4] = {

  34.   { 3,3,4,4 },

  35.   { 3,3,4,4 },

  36.   { 2,3,3,4 },

  37.   { 2,3,3,4 },

  38.   { 2,2,3,3 },

  39.   { 2,2,3,3 },

  40.   { 1,2,2,3 },

  41.   { 1,2,2,3 },

  42.   { 1,1,2,2 },

  43.   { 1,1,2,2 },

  44.   { 0,1,1,2 },

  45.   { 0,1,1,2 },

  46.   { 0,0,1,1 },

  47.   { 0,0,1,1 },

  48.   { 0,0,0,1 },

  49.   { 0,0,0,0 },

  50.   { 0,0,0,0 },

  51.   { 0,0,0,0 },

  52.   { 0,0,0,0 },

  53.   { 0,0,0,0 },

  54.   { 0,0,0,0 },

  55.   { 0,0,0,0 },

  56. };

  57. 

  58. const uint8_t ff_dv_quant_offset[4] = { 6,  3,  0,  1 };

  59. 

  60. const int ff_dv_iweight_88[64] = {

  61.  32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,

  62.  18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,

  63.  19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,

  64.  20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,

  65.  20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,

  66.  21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,

  67.  24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,

  68.  25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,

  69. };

  70. const int ff_dv_iweight_248[64] = {

  71.  32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,

  72.  19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,

  73.  20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,

  74.  17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,

  75.  21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,

  76.  18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,

  77.  24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,

  78.  22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,

  79. };

  80. 

  81. /**

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

  83.  */

  84. const int ff_dv_iweight_1080_y[64] = {

  85.     128,  16,  16,  17,  17,  17,  18,  18,

  86.      18,  18,  18,  18,  19,  18,  18,  19,

  87.      19,  19,  19,  19,  19,  42,  38,  40,

  88.      40,  40,  38,  42,  44,  43,  41,  41,

  89.      41,  41,  43,  44,  45,  45,  42,  42,

  90.      42,  45,  45,  48,  46,  43,  43,  46,

  91.      48,  49,  48,  44,  48,  49, 101,  98,

  92.      98, 101, 104, 109, 104, 116, 116, 123,

  93. };

  94. const int ff_dv_iweight_1080_c[64] = {

  95.     128,  16,  16,  17,  17,  17,  25,  25,

  96.      25,  25,  26,  25,  26,  25,  26,  26,

  97.      26,  27,  27,  26,  26,  42,  38,  40,

  98.      40,  40,  38,  42,  44,  43,  41,  41,

  99.      41,  41,  43,  44,  91,  91,  84,  84,

  100.      84,  91,  91,  96,  93,  86,  86,  93,

  101.      96, 197, 191, 177, 191, 197, 203, 197,

  102.     197, 203, 209, 219, 209, 232, 232, 246,

  103. };

  104. const int ff_dv_iweight_720_y[64] = {

  105.     128,  16,  16,  17,  17,  17,  18,  18,

  106.      18,  18,  18,  18,  19,  18,  18,  19,

  107.      19,  19,  19,  19,  19,  42,  38,  40,

  108.      40,  40,  38,  42,  44,  43,  41,  41,

  109.      41,  41,  43,  44,  68,  68,  63,  63,

  110.      63,  68,  68,  96,  92,  86,  86,  92,

  111.      96,  98,  96,  88,  96,  98, 202, 196,

  112.     196, 202, 208, 218, 208, 232, 232, 246,

  113. };

  114. const int ff_dv_iweight_720_c[64] = {

  115.     128,  24,  24,  26,  26,  26,  36,  36,

  116.      36,  36,  36,  36,  38,  36,  36,  38,

  117.      38,  38,  38,  38,  38,  84,  76,  80,

  118.      80,  80,  76,  84,  88,  86,  82,  82,

  119.      82,  82,  86,  88, 182, 182, 168, 168,

  120.     168, 182, 182, 192, 186, 192, 172, 186,

  121.     192, 394, 382, 354, 382, 394, 406, 394,

  122.     394, 406, 418, 438, 418, 464, 464, 492,

  123. };

  124. 

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

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

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

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

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

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

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

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

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

  134. 

  135. static uint32_t dv_idct_factor_sd    [2*2*22*64];

  136. static uint32_t dv_idct_factor_hd1080[2*4*16*64];

  137. static uint32_t dv_idct_factor_hd720 [2*4*16*64];

  138. 

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

  140.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */

  141.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },

  142.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },

  143.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },

  144.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },

  145. 

  146.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */

  147.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },

  148.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },

  149.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },

  150.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },

  151. };

  152. 

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

  154.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */

  155.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},

  156.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},

  157.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},

  158.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},

  159.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},

  160. 

  161.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */

  162.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},

  163.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},

  164.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},

  165.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},

  166.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},

  167. };

  168. 

  169. /* macroblock bit budgets */

  170. static const uint8_t block_sizes_dv2550[8] = {

  171.     112, 112, 112, 112, 80, 80, 0, 0,

  172. };

  173. 

  174. static const uint8_t block_sizes_dv100[8] = {

  175.     80, 80, 80, 80, 80, 80, 64, 64,

  176. };

  177. static const DVprofile dv_profiles[] = {

  178.     { .dsf = 0,

  179.       .video_stype = 0x0,

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

  181.       .difseg_size = 10,

  182.       .n_difchan = 1,

  183.       .time_base = { 1001, 30000 },

  184.       .ltc_divisor = 30,

  185.       .height = 480,

  186.       .width = 720,

  187.       .sar = {{8, 9}, {32, 27}},

  188.       .work_chunks = &work_chunks_dv25ntsc[0],

  189.       .idct_factor = &dv_idct_factor_sd[0],

  190.       .pix_fmt = PIX_FMT_YUV411P,

  191.       .bpm = 6,

  192.       .block_sizes = block_sizes_dv2550,

  193.       .audio_stride = 90,

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

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

  196.       .audio_shuffle = dv_audio_shuffle525,

  197.     },

  198.     { .dsf = 1,

  199.       .video_stype = 0x0,

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

  201.       .difseg_size = 12,

  202.       .n_difchan = 1,

  203.       .time_base = { 1, 25 },

  204.       .ltc_divisor = 25,

  205.       .height = 576,

  206.       .width = 720,

  207.       .sar = {{16, 15}, {64, 45}},

  208.       .work_chunks = &work_chunks_dv25pal[0],

  209.       .idct_factor = &dv_idct_factor_sd[0],

  210.       .pix_fmt = PIX_FMT_YUV420P,

  211.       .bpm = 6,

  212.       .block_sizes = block_sizes_dv2550,

  213.       .audio_stride = 108,

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

  215.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  216.       .audio_shuffle = dv_audio_shuffle625,

  217.     },

  218.     { .dsf = 1,

  219.       .video_stype = 0x0,

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

  221.       .difseg_size = 12,

  222.       .n_difchan = 1,

  223.       .time_base = { 1, 25 },

  224.       .ltc_divisor = 25,

  225.       .height = 576,

  226.       .width = 720,

  227.       .sar = {{16, 15}, {64, 45}},

  228.       .work_chunks = &work_chunks_dv25pal411[0],

  229.       .idct_factor = &dv_idct_factor_sd[0],

  230.       .pix_fmt = PIX_FMT_YUV411P,

  231.       .bpm = 6,

  232.       .block_sizes = block_sizes_dv2550,

  233.       .audio_stride = 108,

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

  235.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  236.       .audio_shuffle = dv_audio_shuffle625,

  237.     },

  238.     { .dsf = 0,

  239.       .video_stype = 0x4,

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

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

  242.       .n_difchan = 2,

  243.       .time_base = { 1001, 30000 },

  244.       .ltc_divisor = 30,

  245.       .height = 480,

  246.       .width = 720,

  247.       .sar = {{8, 9}, {32, 27}},

  248.       .work_chunks = &work_chunks_dv50ntsc[0],

  249.       .idct_factor = &dv_idct_factor_sd[0],

  250.       .pix_fmt = PIX_FMT_YUV422P,

  251.       .bpm = 6,

  252.       .block_sizes = block_sizes_dv2550,

  253.       .audio_stride = 90,

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

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

  256.       .audio_shuffle = dv_audio_shuffle525,

  257.     },

  258.     { .dsf = 1,

  259.       .video_stype = 0x4,

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

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

  262.       .n_difchan = 2,

  263.       .time_base = { 1, 25 },

  264.       .ltc_divisor = 25,

  265.       .height = 576,

  266.       .width = 720,

  267.       .sar = {{16, 15}, {64, 45}},

  268.       .work_chunks = &work_chunks_dv50pal[0],

  269.       .idct_factor = &dv_idct_factor_sd[0],

  270.       .pix_fmt = PIX_FMT_YUV422P,

  271.       .bpm = 6,

  272.       .block_sizes = block_sizes_dv2550,

  273.       .audio_stride = 108,

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

  275.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  276.       .audio_shuffle = dv_audio_shuffle625,

  277.     },

  278.     { .dsf = 0,

  279.       .video_stype = 0x14,

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

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

  282.       .n_difchan = 4,

  283.       .time_base = { 1001, 30000 },

  284.       .ltc_divisor = 30,

  285.       .height = 1080,

  286.       .width = 1280,

  287.       .sar = {{1, 1}, {3, 2}},

  288.       .work_chunks = &work_chunks_dv100ntsci[0],

  289.       .idct_factor = &dv_idct_factor_hd1080[0],

  290.       .pix_fmt = PIX_FMT_YUV422P,

  291.       .bpm = 8,

  292.       .block_sizes = block_sizes_dv100,

  293.       .audio_stride = 90,

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

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

  296.       .audio_shuffle = dv_audio_shuffle525,

  297.     },

  298.     { .dsf = 1,

  299.       .video_stype = 0x14,

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

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

  302.       .n_difchan = 4,

  303.       .time_base = { 1, 25 },

  304.       .ltc_divisor = 25,

  305.       .height = 1080,

  306.       .width = 1440,

  307.       .sar = {{1, 1}, {4, 3}},

  308.       .work_chunks = &work_chunks_dv100pali[0],

  309.       .idct_factor = &dv_idct_factor_hd1080[0],

  310.       .pix_fmt = PIX_FMT_YUV422P,

  311.       .bpm = 8,

  312.       .block_sizes = block_sizes_dv100,

  313.       .audio_stride = 108,

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

  315.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  316.       .audio_shuffle = dv_audio_shuffle625,

  317.     },

  318.     { .dsf = 0,

  319.       .video_stype = 0x18,

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

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

  322.       .n_difchan = 2,

  323.       .time_base = { 1001, 60000 },

  324.       .ltc_divisor = 60,

  325.       .height = 720,

  326.       .width = 960,

  327.       .sar = {{1, 1}, {4, 3}},

  328.       .work_chunks = &work_chunks_dv100ntscp[0],

  329.       .idct_factor = &dv_idct_factor_hd720[0],

  330.       .pix_fmt = PIX_FMT_YUV422P,

  331.       .bpm = 8,

  332.       .block_sizes = block_sizes_dv100,

  333.       .audio_stride = 90,

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

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

  336.       .audio_shuffle = dv_audio_shuffle525,

  337.     },

  338.     { .dsf = 1,

  339.       .video_stype = 0x18,

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

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

  342.       .n_difchan = 2,

  343.       .time_base = { 1, 50 },

  344.       .ltc_divisor = 50,

  345.       .height = 720,

  346.       .width = 960,

  347.       .sar = {{1, 1}, {4, 3}},

  348.       .work_chunks = &work_chunks_dv100palp[0],

  349.       .idct_factor = &dv_idct_factor_hd720[0],

  350.       .pix_fmt = PIX_FMT_YUV422P,

  351.       .bpm = 8,

  352.       .block_sizes = block_sizes_dv100,

  353.       .audio_stride = 90,

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

  355.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  356.       .audio_shuffle = dv_audio_shuffle625,

  357.     },

  358.     { .dsf = 1,

  359.       .video_stype = 0x1,

  360.       .frame_size = 144000,        /* IEC 61883-5 - 625/50 (PAL) */

  361.       .difseg_size = 12,

  362.       .n_difchan = 1,

  363.       .time_base = { 1, 25 },

  364.       .ltc_divisor = 25,

  365.       .height = 576,

  366.       .width = 720,

  367.       .sar = {{16, 15}, {64, 45}},

  368.       .work_chunks = &work_chunks_dv25pal[0],

  369.       .idct_factor = &dv_idct_factor_sd[0],

  370.       .pix_fmt = PIX_FMT_YUV420P,

  371.       .bpm = 6,

  372.       .block_sizes = block_sizes_dv2550,

  373.       .audio_stride = 108,

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

  375.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  376.       .audio_shuffle = dv_audio_shuffle625,

  377.     }

  378. };

  379. 

  380. const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,

  381.                                   const uint8_t* frame, unsigned buf_size)

  382. {

  383.     int i, dsf, stype;

  384. 

  385.     if (buf_size < 80 * 5 + 48 + 4)

  386.         return NULL;

  387. 

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

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

  390. 

  391.     /* 576i50 25Mbps 4:1:1 is a special case */

  392.     if (dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) {

  393.         return &dv_profiles[2];

  394.     }

  395. 

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

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

  398.             return &dv_profiles[i];

  399. 

  400.     /* check if old sys matches and assumes corrupted input */

  401.     if (sys && buf_size == sys->frame_size)

  402.         return sys;

  403. 

  404.     return NULL;

  405. }

  406. 

  407. const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)

  408. {

  409.     int i;

  410. 

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

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

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

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

  415.                return &dv_profiles[i];

  416. 

  417.     return NULL;

  418. }

  419. 

  420. void ff_dv_print_profiles(void *logctx, int loglevel)

  421. {

  422.     int i;

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

  424.         const DVprofile *p = &dv_profiles[i];

  425.         av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "

  426.                "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),

  427.                p->time_base.den, p->time_base.num);

  428.     }

  429. }