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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 "config.h"

  22. 

  23. #include "libavutil/common.h"

  24. #include "libavutil/log.h"

  25. #include "libavutil/pixdesc.h"

  26. #include "avcodec.h"

  27. #include "dv_profile.h"

  28. #include "dv_profile_internal.h"

  29. 

  30. #if CONFIG_DVPROFILE

  31. 

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

  33.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */

  34.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },

  35.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },

  36.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },

  37.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },

  38. 

  39.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */

  40.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },

  41.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },

  42.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },

  43.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },

  44. };

  45. 

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

  47.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */

  48.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},

  49.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},

  50.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},

  51.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},

  52.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},

  53. 

  54.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */

  55.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},

  56.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},

  57.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},

  58.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},

  59.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},

  60. };

  61. 

  62. /* macroblock bit budgets */

  63. static const uint8_t block_sizes_dv2550[8] = {

  64.     112, 112, 112, 112, 80, 80, 0, 0,

  65. };

  66. 

  67. static const uint8_t block_sizes_dv100[8] = {

  68.     80, 80, 80, 80, 80, 80, 64, 64,

  69. };

  70. 

  71. static const AVDVProfile dv_profiles[] = {

  72.     { .dsf = 0,

  73.       .video_stype = 0x0,

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

  75.       .difseg_size = 10,

  76.       .n_difchan = 1,

  77.       .time_base = { 1001, 30000 },

  78.       .ltc_divisor = 30,

  79.       .height = 480,

  80.       .width = 720,

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

  82.       .pix_fmt = AV_PIX_FMT_YUV411P,

  83.       .bpm = 6,

  84.       .block_sizes = block_sizes_dv2550,

  85.       .audio_stride = 90,

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

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

  88.       .audio_shuffle = dv_audio_shuffle525,

  89.     },

  90.     { .dsf = 1,

  91.       .video_stype = 0x0,

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

  93.       .difseg_size = 12,

  94.       .n_difchan = 1,

  95.       .time_base = { 1, 25 },

  96.       .ltc_divisor = 25,

  97.       .height = 576,

  98.       .width = 720,

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

  100.       .pix_fmt = AV_PIX_FMT_YUV420P,

  101.       .bpm = 6,

  102.       .block_sizes = block_sizes_dv2550,

  103.       .audio_stride = 108,

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

  105.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  106.       .audio_shuffle = dv_audio_shuffle625,

  107.     },

  108.     { .dsf = 1,

  109.       .video_stype = 0x0,

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

  111.       .difseg_size = 12,

  112.       .n_difchan = 1,

  113.       .time_base = { 1, 25 },

  114.       .ltc_divisor = 25,

  115.       .height = 576,

  116.       .width = 720,

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

  118.       .pix_fmt = AV_PIX_FMT_YUV411P,

  119.       .bpm = 6,

  120.       .block_sizes = block_sizes_dv2550,

  121.       .audio_stride = 108,

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

  123.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  124.       .audio_shuffle = dv_audio_shuffle625,

  125.     },

  126.     { .dsf = 0,

  127.       .video_stype = 0x4,

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

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

  130.       .n_difchan = 2,

  131.       .time_base = { 1001, 30000 },

  132.       .ltc_divisor = 30,

  133.       .height = 480,

  134.       .width = 720,

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

  136.       .pix_fmt = AV_PIX_FMT_YUV422P,

  137.       .bpm = 6,

  138.       .block_sizes = block_sizes_dv2550,

  139.       .audio_stride = 90,

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

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

  142.       .audio_shuffle = dv_audio_shuffle525,

  143.     },

  144.     { .dsf = 1,

  145.       .video_stype = 0x4,

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

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

  148.       .n_difchan = 2,

  149.       .time_base = { 1, 25 },

  150.       .ltc_divisor = 25,

  151.       .height = 576,

  152.       .width = 720,

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

  154.       .pix_fmt = AV_PIX_FMT_YUV422P,

  155.       .bpm = 6,

  156.       .block_sizes = block_sizes_dv2550,

  157.       .audio_stride = 108,

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

  159.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  160.       .audio_shuffle = dv_audio_shuffle625,

  161.     },

  162.     { .dsf = 0,

  163.       .video_stype = 0x14,

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

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

  166.       .n_difchan = 4,

  167.       .time_base = { 1001, 30000 },

  168.       .ltc_divisor = 30,

  169.       .height = 1080,

  170.       .width = 1280,

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

  172.       .pix_fmt = AV_PIX_FMT_YUV422P,

  173.       .bpm = 8,

  174.       .block_sizes = block_sizes_dv100,

  175.       .audio_stride = 90,

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

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

  178.       .audio_shuffle = dv_audio_shuffle525,

  179.     },

  180.     { .dsf = 1,

  181.       .video_stype = 0x14,

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

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

  184.       .n_difchan = 4,

  185.       .time_base = { 1, 25 },

  186.       .ltc_divisor = 25,

  187.       .height = 1080,

  188.       .width = 1440,

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

  190.       .pix_fmt = AV_PIX_FMT_YUV422P,

  191.       .bpm = 8,

  192.       .block_sizes = block_sizes_dv100,

  193.       .audio_stride = 108,

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

  195.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  196.       .audio_shuffle = dv_audio_shuffle625,

  197.     },

  198.     { .dsf = 0,

  199.       .video_stype = 0x18,

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

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

  202.       .n_difchan = 2,

  203.       .time_base = { 1001, 60000 },

  204.       .ltc_divisor = 60,

  205.       .height = 720,

  206.       .width = 960,

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

  208.       .pix_fmt = AV_PIX_FMT_YUV422P,

  209.       .bpm = 8,

  210.       .block_sizes = block_sizes_dv100,

  211.       .audio_stride = 90,

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

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

  214.       .audio_shuffle = dv_audio_shuffle525,

  215.     },

  216.     { .dsf = 1,

  217.       .video_stype = 0x18,

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

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

  220.       .n_difchan = 2,

  221.       .time_base = { 1, 50 },

  222.       .ltc_divisor = 50,

  223.       .height = 720,

  224.       .width = 960,

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

  226.       .pix_fmt = AV_PIX_FMT_YUV422P,

  227.       .bpm = 8,

  228.       .block_sizes = block_sizes_dv100,

  229.       .audio_stride = 90,

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

  231.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  232.       .audio_shuffle = dv_audio_shuffle625,

  233.     },

  234.     { .dsf = 1,

  235.       .video_stype = 0x1,

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

  237.       .difseg_size = 12,

  238.       .n_difchan = 1,

  239.       .time_base = { 1, 25 },

  240.       .ltc_divisor = 25,

  241.       .height = 576,

  242.       .width = 720,

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

  244.       .pix_fmt = AV_PIX_FMT_YUV420P,

  245.       .bpm = 6,

  246.       .block_sizes = block_sizes_dv2550,

  247.       .audio_stride = 108,

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

  249.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  250.       .audio_shuffle = dv_audio_shuffle625,

  251.     }

  252. };

  253. 

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

  255. {

  256.     int i;

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

  258.         const AVDVProfile *p = &dv_profiles[i];

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

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

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

  262.     }

  263. }

  264. 

  265. #endif /* CONFIG_DVPROFILE */

  266. 

  267. const AVDVProfile *av_dv_frame_profile(const AVDVProfile *sys,

  268.                                        const uint8_t* frame, unsigned buf_size)

  269. {

  270. #if CONFIG_DVPROFILE

  271.     int i, dsf, stype;

  272. 

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

  274.         return NULL;

  275. 

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

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

  278. 

  279.     /* 576i50 25Mbps 4:1:1 is a special case */

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

  281.         return &dv_profiles[2];

  282.     }

  283. 

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

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

  286.             return &dv_profiles[i];

  287. 

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

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

  290.         return sys;

  291. #endif

  292. 

  293.     return NULL;

  294. }

  295. 

  296. const AVDVProfile *av_dv_codec_profile(int width, int height,

  297.                                        enum AVPixelFormat pix_fmt)

  298. {

  299. #if CONFIG_DVPROFILE

  300.     int i;

  301. 

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

  303.        if (height  == dv_profiles[i].height  &&

  304.            pix_fmt == dv_profiles[i].pix_fmt &&

  305.            width   == dv_profiles[i].width)

  306.            return &dv_profiles[i];

  307. #endif

  308. 

  309.     return NULL;

  310. }

  311. 

  312. #if LIBAVCODEC_VERSION_MAJOR < 56

  313. const AVDVProfile *avpriv_dv_frame_profile(const AVDVProfile *sys,

  314.                                          const uint8_t* frame, unsigned buf_size)

  315. {

  316.     return av_dv_frame_profile(sys, frame, buf_size);

  317. }

  318. 

  319. const AVDVProfile *avpriv_dv_codec_profile(AVCodecContext *codec)

  320. {

  321.     return av_dv_codec_profile(codec->width, codec->height, codec->pix_fmt);

  322. }

  323. #endif