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FFmpeg/libavcodec/dv_profile.c

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  1. /*

  2.  * This file is part of Libav.

  3.  *

  4.  * Libav is free software; you can redistribute it and/or

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

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

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

  8.  *

  9.  * Libav is distributed in the hope that it will be useful,

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

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

  12.  * Lesser General Public License for more details.

  13.  *

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

  15.  * License along with Libav; if not, write to the Free Software

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

  17.  */

  18. 

  19. #include <stdint.h>

  20. 

  21. #include "libavutil/common.h"

  22. #include "libavutil/log.h"

  23. #include "libavutil/pixdesc.h"

  24. #include "avcodec.h"

  25. #include "dv_profile.h"

  26. 

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

  28.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */

  29.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },

  30.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },

  31.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },

  32.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },

  33. 

  34.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */

  35.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },

  36.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },

  37.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },

  38.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },

  39. };

  40. 

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

  42.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */

  43.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},

  44.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},

  45.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},

  46.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},

  47.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},

  48. 

  49.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */

  50.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},

  51.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},

  52.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},

  53.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},

  54.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},

  55. };

  56. 

  57. /* macroblock bit budgets */

  58. static const uint8_t block_sizes_dv2550[8] = {

  59.     112, 112, 112, 112, 80, 80, 0, 0,

  60. };

  61. 

  62. static const uint8_t block_sizes_dv100[8] = {

  63.     80, 80, 80, 80, 80, 80, 64, 64,

  64. };

  65. 

  66. static const DVprofile dv_profiles[] = {

  67.     { .dsf = 0,

  68.       .video_stype = 0x0,

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

  70.       .difseg_size = 10,

  71.       .n_difchan = 1,

  72.       .time_base = { 1001, 30000 },

  73.       .ltc_divisor = 30,

  74.       .height = 480,

  75.       .width = 720,

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

  77.       .pix_fmt = AV_PIX_FMT_YUV411P,

  78.       .bpm = 6,

  79.       .block_sizes = block_sizes_dv2550,

  80.       .audio_stride = 90,

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

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

  83.       .audio_shuffle = dv_audio_shuffle525,

  84.     },

  85.     { .dsf = 1,

  86.       .video_stype = 0x0,

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

  88.       .difseg_size = 12,

  89.       .n_difchan = 1,

  90.       .time_base = { 1, 25 },

  91.       .ltc_divisor = 25,

  92.       .height = 576,

  93.       .width = 720,

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

  95.       .pix_fmt = AV_PIX_FMT_YUV420P,

  96.       .bpm = 6,

  97.       .block_sizes = block_sizes_dv2550,

  98.       .audio_stride = 108,

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

  100.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  101.       .audio_shuffle = dv_audio_shuffle625,

  102.     },

  103.     { .dsf = 1,

  104.       .video_stype = 0x0,

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

  106.       .difseg_size = 12,

  107.       .n_difchan = 1,

  108.       .time_base = { 1, 25 },

  109.       .ltc_divisor = 25,

  110.       .height = 576,

  111.       .width = 720,

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

  113.       .pix_fmt = AV_PIX_FMT_YUV411P,

  114.       .bpm = 6,

  115.       .block_sizes = block_sizes_dv2550,

  116.       .audio_stride = 108,

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

  118.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  119.       .audio_shuffle = dv_audio_shuffle625,

  120.     },

  121.     { .dsf = 0,

  122.       .video_stype = 0x4,

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

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

  125.       .n_difchan = 2,

  126.       .time_base = { 1001, 30000 },

  127.       .ltc_divisor = 30,

  128.       .height = 480,

  129.       .width = 720,

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

  131.       .pix_fmt = AV_PIX_FMT_YUV422P,

  132.       .bpm = 6,

  133.       .block_sizes = block_sizes_dv2550,

  134.       .audio_stride = 90,

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

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

  137.       .audio_shuffle = dv_audio_shuffle525,

  138.     },

  139.     { .dsf = 1,

  140.       .video_stype = 0x4,

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

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

  143.       .n_difchan = 2,

  144.       .time_base = { 1, 25 },

  145.       .ltc_divisor = 25,

  146.       .height = 576,

  147.       .width = 720,

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

  149.       .pix_fmt = AV_PIX_FMT_YUV422P,

  150.       .bpm = 6,

  151.       .block_sizes = block_sizes_dv2550,

  152.       .audio_stride = 108,

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

  154.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  155.       .audio_shuffle = dv_audio_shuffle625,

  156.     },

  157.     { .dsf = 0,

  158.       .video_stype = 0x14,

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

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

  161.       .n_difchan = 4,

  162.       .time_base = { 1001, 30000 },

  163.       .ltc_divisor = 30,

  164.       .height = 1080,

  165.       .width = 1280,

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

  167.       .pix_fmt = AV_PIX_FMT_YUV422P,

  168.       .bpm = 8,

  169.       .block_sizes = block_sizes_dv100,

  170.       .audio_stride = 90,

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

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

  173.       .audio_shuffle = dv_audio_shuffle525,

  174.     },

  175.     { .dsf = 1,

  176.       .video_stype = 0x14,

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

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

  179.       .n_difchan = 4,

  180.       .time_base = { 1, 25 },

  181.       .ltc_divisor = 25,

  182.       .height = 1080,

  183.       .width = 1440,

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

  185.       .pix_fmt = AV_PIX_FMT_YUV422P,

  186.       .bpm = 8,

  187.       .block_sizes = block_sizes_dv100,

  188.       .audio_stride = 108,

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

  190.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  191.       .audio_shuffle = dv_audio_shuffle625,

  192.     },

  193.     { .dsf = 0,

  194.       .video_stype = 0x18,

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

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

  197.       .n_difchan = 2,

  198.       .time_base = { 1001, 60000 },

  199.       .ltc_divisor = 60,

  200.       .height = 720,

  201.       .width = 960,

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

  203.       .pix_fmt = AV_PIX_FMT_YUV422P,

  204.       .bpm = 8,

  205.       .block_sizes = block_sizes_dv100,

  206.       .audio_stride = 90,

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

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

  209.       .audio_shuffle = dv_audio_shuffle525,

  210.     },

  211.     { .dsf = 1,

  212.       .video_stype = 0x18,

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

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

  215.       .n_difchan = 2,

  216.       .time_base = { 1, 50 },

  217.       .ltc_divisor = 50,

  218.       .height = 720,

  219.       .width = 960,

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

  221.       .pix_fmt = AV_PIX_FMT_YUV422P,

  222.       .bpm = 8,

  223.       .block_sizes = block_sizes_dv100,

  224.       .audio_stride = 90,

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

  226.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  227.       .audio_shuffle = dv_audio_shuffle625,

  228.     },

  229.     { .dsf = 1,

  230.       .video_stype = 0x1,

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

  232.       .difseg_size = 12,

  233.       .n_difchan = 1,

  234.       .time_base = { 1, 25 },

  235.       .ltc_divisor = 25,

  236.       .height = 576,

  237.       .width = 720,

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

  239.       .pix_fmt = AV_PIX_FMT_YUV420P,

  240.       .bpm = 6,

  241.       .block_sizes = block_sizes_dv2550,

  242.       .audio_stride = 108,

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

  244.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  245.       .audio_shuffle = dv_audio_shuffle625,

  246.     }

  247. };

  248. 

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

  250.                                   const uint8_t* frame, unsigned buf_size)

  251. {

  252.     int i, dsf, stype;

  253. 

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

  255.         return NULL;

  256. 

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

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

  259. 

  260.     /* 576i50 25Mbps 4:1:1 is a special case */

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

  262.         return &dv_profiles[2];

  263.     }

  264. 

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

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

  267.             return &dv_profiles[i];

  268. 

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

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

  271.         return sys;

  272. 

  273.     return NULL;

  274. }

  275. 

  276. const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)

  277. {

  278.     int i;

  279. 

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

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

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

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

  284.                return &dv_profiles[i];

  285. 

  286.     return NULL;

  287. }

  288. 

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

  290. {

  291.     int i;

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

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

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

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

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

  297.     }

  298. }