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FFmpeg/libavcodec/dv_profile.c

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  1. /*

  2.  * This file is part of FFmpeg.

  3.  *

  4.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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/intreadwrite.h"

  23. #include "libavutil/log.h"

  24. #include "libavutil/pixdesc.h"

  25. #include "avcodec.h"

  26. #include "dv_profile.h"

  27. 

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

  29.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */

  30.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },

  31.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },

  32.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },

  33.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },

  34. 

  35.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */

  36.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },

  37.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },

  38.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },

  39.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },

  40. };

  41. 

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

  43.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */

  44.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},

  45.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},

  46.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},

  47.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},

  48.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},

  49. 

  50.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */

  51.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},

  52.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},

  53.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},

  54.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},

  55.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},

  56. };

  57. 

  58. /* macroblock bit budgets */

  59. static const uint8_t block_sizes_dv2550[8] = {

  60.     112, 112, 112, 112, 80, 80, 0, 0,

  61. };

  62. 

  63. static const uint8_t block_sizes_dv100[8] = {

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

  65. };

  66. 

  67. static const DVprofile dv_profiles[] = {

  68.     { .dsf = 0,

  69.       .video_stype = 0x0,

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

  71.       .difseg_size = 10,

  72.       .n_difchan = 1,

  73.       .time_base = { 1001, 30000 },

  74.       .ltc_divisor = 30,

  75.       .height = 480,

  76.       .width = 720,

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

  78.       .pix_fmt = AV_PIX_FMT_YUV411P,

  79.       .bpm = 6,

  80.       .block_sizes = block_sizes_dv2550,

  81.       .audio_stride = 90,

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

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

  84.       .audio_shuffle = dv_audio_shuffle525,

  85.     },

  86.     { .dsf = 1,

  87.       .video_stype = 0x0,

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

  89.       .difseg_size = 12,

  90.       .n_difchan = 1,

  91.       .time_base = { 1, 25 },

  92.       .ltc_divisor = 25,

  93.       .height = 576,

  94.       .width = 720,

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

  96.       .pix_fmt = AV_PIX_FMT_YUV420P,

  97.       .bpm = 6,

  98.       .block_sizes = block_sizes_dv2550,

  99.       .audio_stride = 108,

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

  101.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  102.       .audio_shuffle = dv_audio_shuffle625,

  103.     },

  104.     { .dsf = 1,

  105.       .video_stype = 0x0,

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

  107.       .difseg_size = 12,

  108.       .n_difchan = 1,

  109.       .time_base = { 1, 25 },

  110.       .ltc_divisor = 25,

  111.       .height = 576,

  112.       .width = 720,

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

  114.       .pix_fmt = AV_PIX_FMT_YUV411P,

  115.       .bpm = 6,

  116.       .block_sizes = block_sizes_dv2550,

  117.       .audio_stride = 108,

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

  119.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  120.       .audio_shuffle = dv_audio_shuffle625,

  121.     },

  122.     { .dsf = 0,

  123.       .video_stype = 0x4,

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

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

  126.       .n_difchan = 2,

  127.       .time_base = { 1001, 30000 },

  128.       .ltc_divisor = 30,

  129.       .height = 480,

  130.       .width = 720,

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

  132.       .pix_fmt = AV_PIX_FMT_YUV422P,

  133.       .bpm = 6,

  134.       .block_sizes = block_sizes_dv2550,

  135.       .audio_stride = 90,

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

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

  138.       .audio_shuffle = dv_audio_shuffle525,

  139.     },

  140.     { .dsf = 1,

  141.       .video_stype = 0x4,

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

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

  144.       .n_difchan = 2,

  145.       .time_base = { 1, 25 },

  146.       .ltc_divisor = 25,

  147.       .height = 576,

  148.       .width = 720,

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

  150.       .pix_fmt = AV_PIX_FMT_YUV422P,

  151.       .bpm = 6,

  152.       .block_sizes = block_sizes_dv2550,

  153.       .audio_stride = 108,

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

  155.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  156.       .audio_shuffle = dv_audio_shuffle625,

  157.     },

  158.     { .dsf = 0,

  159.       .video_stype = 0x14,

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

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

  162.       .n_difchan = 4,

  163.       .time_base = { 1001, 30000 },

  164.       .ltc_divisor = 30,

  165.       .height = 1080,

  166.       .width = 1280,

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

  168.       .pix_fmt = AV_PIX_FMT_YUV422P,

  169.       .bpm = 8,

  170.       .block_sizes = block_sizes_dv100,

  171.       .audio_stride = 90,

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

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

  174.       .audio_shuffle = dv_audio_shuffle525,

  175.     },

  176.     { .dsf = 1,

  177.       .video_stype = 0x14,

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

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

  180.       .n_difchan = 4,

  181.       .time_base = { 1, 25 },

  182.       .ltc_divisor = 25,

  183.       .height = 1080,

  184.       .width = 1440,

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

  186.       .pix_fmt = AV_PIX_FMT_YUV422P,

  187.       .bpm = 8,

  188.       .block_sizes = block_sizes_dv100,

  189.       .audio_stride = 108,

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

  191.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  192.       .audio_shuffle = dv_audio_shuffle625,

  193.     },

  194.     { .dsf = 0,

  195.       .video_stype = 0x18,

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

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

  198.       .n_difchan = 2,

  199.       .time_base = { 1001, 60000 },

  200.       .ltc_divisor = 60,

  201.       .height = 720,

  202.       .width = 960,

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

  204.       .pix_fmt = AV_PIX_FMT_YUV422P,

  205.       .bpm = 8,

  206.       .block_sizes = block_sizes_dv100,

  207.       .audio_stride = 90,

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

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

  210.       .audio_shuffle = dv_audio_shuffle525,

  211.     },

  212.     { .dsf = 1,

  213.       .video_stype = 0x18,

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

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

  216.       .n_difchan = 2,

  217.       .time_base = { 1, 50 },

  218.       .ltc_divisor = 50,

  219.       .height = 720,

  220.       .width = 960,

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

  222.       .pix_fmt = AV_PIX_FMT_YUV422P,

  223.       .bpm = 8,

  224.       .block_sizes = block_sizes_dv100,

  225.       .audio_stride = 90,

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

  227.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  228.       .audio_shuffle = dv_audio_shuffle625,

  229.     },

  230.     { .dsf = 1,

  231.       .video_stype = 0x1,

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

  233.       .difseg_size = 12,

  234.       .n_difchan = 1,

  235.       .time_base = { 1, 25 },

  236.       .ltc_divisor = 25,

  237.       .height = 576,

  238.       .width = 720,

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

  240.       .pix_fmt = AV_PIX_FMT_YUV420P,

  241.       .bpm = 6,

  242.       .block_sizes = block_sizes_dv2550,

  243.       .audio_stride = 108,

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

  245.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },

  246.       .audio_shuffle = dv_audio_shuffle625,

  247.     }

  248. };

  249. 

  250. const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,

  251.                                   const uint8_t* frame, unsigned buf_size)

  252. {

  253.     int i, dsf, stype;

  254. 

  255.     if(buf_size < DV_PROFILE_BYTES)

  256.         return NULL;

  257. 

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

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

  260. 

  261.     /* 576i50 25Mbps 4:1:1 is a special case */

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

  263.         (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) {

  264.         return &dv_profiles[2];

  265.     }

  266. 

  267.     if(   stype == 0

  268.        && codec

  269.        && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC"))

  270.        && codec->coded_width ==720

  271.        && codec->coded_height==576)

  272.         return &dv_profiles[1];

  273. 

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

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

  276.             return &dv_profiles[i];

  277. 

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

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

  280.         return sys;

  281. 

  282.     /* hack for trac issue #217, dv files created with QuickTime 3 */

  283.     if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)

  284.         return &dv_profiles[dsf];

  285. 

  286.     return NULL;

  287. }

  288. 

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

  290.                                   const uint8_t* frame, unsigned buf_size)

  291. {

  292.     return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);

  293. }

  294. 

  295. const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)

  296. {

  297.     int i;

  298.     int w, h;

  299. 

  300.     if (codec->coded_width || codec->coded_height) {

  301.         w = codec->coded_width;

  302.         h = codec->coded_height;

  303.     } else {

  304.         w = codec->width;

  305.         h = codec->height;

  306.     }

  307. 

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

  309.        if (h == dv_profiles[i].height  &&

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

  311.            w == dv_profiles[i].width)

  312.                return &dv_profiles[i];

  313. 

  314.     return NULL;

  315. }

  316. 

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

  318. {

  319.     int i;

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

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

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

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

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

  325.     }

  326. }