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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 DVwork_chunk work_chunks_dv25pal   [1*12*27];
  29. static DVwork_chunk work_chunks_dv25pal411[1*12*27];
  30. static DVwork_chunk work_chunks_dv25ntsc  [1*10*27];
  31. static DVwork_chunk work_chunks_dv50pal   [2*12*27];
  32. static DVwork_chunk work_chunks_dv50ntsc  [2*10*27];
  33. static DVwork_chunk work_chunks_dv100palp [2*12*27];
  34. static DVwork_chunk work_chunks_dv100ntscp[2*10*27];
  35. static DVwork_chunk work_chunks_dv100pali [4*12*27];
  36. static DVwork_chunk work_chunks_dv100ntsci[4*10*27];
  37.  
  38. static uint32_t dv_idct_factor_sd    [2*2*22*64];
  39. static uint32_t dv_idct_factor_hd1080[2*4*16*64];
  40. static uint32_t dv_idct_factor_hd720 [2*4*16*64];
  41.  
  42. static const uint8_t dv_audio_shuffle525[10][9] = {
  43.   {  0, 30, 60, 20, 50, 80, 10, 40, 70 }, /* 1st channel */
  44.   {  6, 36, 66, 26, 56, 86, 16, 46, 76 },
  45.   { 12, 42, 72,  2, 32, 62, 22, 52, 82 },
  46.   { 18, 48, 78,  8, 38, 68, 28, 58, 88 },
  47.   { 24, 54, 84, 14, 44, 74,  4, 34, 64 },
  48.  
  49.   {  1, 31, 61, 21, 51, 81, 11, 41, 71 }, /* 2nd channel */
  50.   {  7, 37, 67, 27, 57, 87, 17, 47, 77 },
  51.   { 13, 43, 73,  3, 33, 63, 23, 53, 83 },
  52.   { 19, 49, 79,  9, 39, 69, 29, 59, 89 },
  53.   { 25, 55, 85, 15, 45, 75,  5, 35, 65 },
  54. };
  55.  
  56. static const uint8_t dv_audio_shuffle625[12][9] = {
  57.   {   0,  36,  72,  26,  62,  98,  16,  52,  88}, /* 1st channel */
  58.   {   6,  42,  78,  32,  68, 104,  22,  58,  94},
  59.   {  12,  48,  84,   2,  38,  74,  28,  64, 100},
  60.   {  18,  54,  90,   8,  44,  80,  34,  70, 106},
  61.   {  24,  60,  96,  14,  50,  86,   4,  40,  76},
  62.   {  30,  66, 102,  20,  56,  92,  10,  46,  82},
  63.  
  64.   {   1,  37,  73,  27,  63,  99,  17,  53,  89}, /* 2nd channel */
  65.   {   7,  43,  79,  33,  69, 105,  23,  59,  95},
  66.   {  13,  49,  85,   3,  39,  75,  29,  65, 101},
  67.   {  19,  55,  91,   9,  45,  81,  35,  71, 107},
  68.   {  25,  61,  97,  15,  51,  87,   5,  41,  77},
  69.   {  31,  67, 103,  21,  57,  93,  11,  47,  83},
  70. };
  71.  
  72. /* macroblock bit budgets */
  73. static const uint8_t block_sizes_dv2550[8] = {
  74.     112, 112, 112, 112, 80, 80, 0, 0,
  75. };
  76.  
  77. static const uint8_t block_sizes_dv100[8] = {
  78.     80, 80, 80, 80, 80, 80, 64, 64,
  79. };
  80.  
  81. static const DVprofile dv_profiles[] = {
  82.     { .dsf = 0,
  83.       .video_stype = 0x0,
  84.       .frame_size = 120000,        /* IEC 61834, SMPTE-314M - 525/60 (NTSC) */
  85.       .difseg_size = 10,
  86.       .n_difchan = 1,
  87.       .time_base = { 1001, 30000 },
  88.       .ltc_divisor = 30,
  89.       .height = 480,
  90.       .width = 720,
  91.       .sar = {{8, 9}, {32, 27}},
  92.       .work_chunks = &work_chunks_dv25ntsc[0],
  93.       .idct_factor = &dv_idct_factor_sd[0],
  94.       .pix_fmt = AV_PIX_FMT_YUV411P,
  95.       .bpm = 6,
  96.       .block_sizes = block_sizes_dv2550,
  97.       .audio_stride = 90,
  98.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
  99.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
  100.       .audio_shuffle = dv_audio_shuffle525,
  101.     },
  102.     { .dsf = 1,
  103.       .video_stype = 0x0,
  104.       .frame_size = 144000,        /* IEC 61834 - 625/50 (PAL) */
  105.       .difseg_size = 12,
  106.       .n_difchan = 1,
  107.       .time_base = { 1, 25 },
  108.       .ltc_divisor = 25,
  109.       .height = 576,
  110.       .width = 720,
  111.       .sar = {{16, 15}, {64, 45}},
  112.       .work_chunks = &work_chunks_dv25pal[0],
  113.       .idct_factor = &dv_idct_factor_sd[0],
  114.       .pix_fmt = AV_PIX_FMT_YUV420P,
  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 = 1,
  123.       .video_stype = 0x0,
  124.       .frame_size = 144000,        /* SMPTE-314M - 625/50 (PAL) */
  125.       .difseg_size = 12,
  126.       .n_difchan = 1,
  127.       .time_base = { 1, 25 },
  128.       .ltc_divisor = 25,
  129.       .height = 576,
  130.       .width = 720,
  131.       .sar = {{16, 15}, {64, 45}},
  132.       .work_chunks = &work_chunks_dv25pal411[0],
  133.       .idct_factor = &dv_idct_factor_sd[0],
  134.       .pix_fmt = AV_PIX_FMT_YUV411P,
  135.       .bpm = 6,
  136.       .block_sizes = block_sizes_dv2550,
  137.       .audio_stride = 108,
  138.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  139.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  140.       .audio_shuffle = dv_audio_shuffle625,
  141.     },
  142.     { .dsf = 0,
  143.       .video_stype = 0x4,
  144.       .frame_size = 240000,        /* SMPTE-314M - 525/60 (NTSC) 50 Mbps */
  145.       .difseg_size = 10,           /* also known as "DVCPRO50" */
  146.       .n_difchan = 2,
  147.       .time_base = { 1001, 30000 },
  148.       .ltc_divisor = 30,
  149.       .height = 480,
  150.       .width = 720,
  151.       .sar = {{8, 9}, {32, 27}},
  152.       .work_chunks = &work_chunks_dv50ntsc[0],
  153.       .idct_factor = &dv_idct_factor_sd[0],
  154.       .pix_fmt = AV_PIX_FMT_YUV422P,
  155.       .bpm = 6,
  156.       .block_sizes = block_sizes_dv2550,
  157.       .audio_stride = 90,
  158.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
  159.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
  160.       .audio_shuffle = dv_audio_shuffle525,
  161.     },
  162.     { .dsf = 1,
  163.       .video_stype = 0x4,
  164.       .frame_size = 288000,        /* SMPTE-314M - 625/50 (PAL) 50 Mbps */
  165.       .difseg_size = 12,           /* also known as "DVCPRO50" */
  166.       .n_difchan = 2,
  167.       .time_base = { 1, 25 },
  168.       .ltc_divisor = 25,
  169.       .height = 576,
  170.       .width = 720,
  171.       .sar = {{16, 15}, {64, 45}},
  172.       .work_chunks = &work_chunks_dv50pal[0],
  173.       .idct_factor = &dv_idct_factor_sd[0],
  174.       .pix_fmt = AV_PIX_FMT_YUV422P,
  175.       .bpm = 6,
  176.       .block_sizes = block_sizes_dv2550,
  177.       .audio_stride = 108,
  178.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  179.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  180.       .audio_shuffle = dv_audio_shuffle625,
  181.     },
  182.     { .dsf = 0,
  183.       .video_stype = 0x14,
  184.       .frame_size = 480000,        /* SMPTE-370M - 1080i60 100 Mbps */
  185.       .difseg_size = 10,           /* also known as "DVCPRO HD" */
  186.       .n_difchan = 4,
  187.       .time_base = { 1001, 30000 },
  188.       .ltc_divisor = 30,
  189.       .height = 1080,
  190.       .width = 1280,
  191.       .sar = {{1, 1}, {3, 2}},
  192.       .work_chunks = &work_chunks_dv100ntsci[0],
  193.       .idct_factor = &dv_idct_factor_hd1080[0],
  194.       .pix_fmt = AV_PIX_FMT_YUV422P,
  195.       .bpm = 8,
  196.       .block_sizes = block_sizes_dv100,
  197.       .audio_stride = 90,
  198.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
  199.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
  200.       .audio_shuffle = dv_audio_shuffle525,
  201.     },
  202.     { .dsf = 1,
  203.       .video_stype = 0x14,
  204.       .frame_size = 576000,        /* SMPTE-370M - 1080i50 100 Mbps */
  205.       .difseg_size = 12,           /* also known as "DVCPRO HD" */
  206.       .n_difchan = 4,
  207.       .time_base = { 1, 25 },
  208.       .ltc_divisor = 25,
  209.       .height = 1080,
  210.       .width = 1440,
  211.       .sar = {{1, 1}, {4, 3}},
  212.       .work_chunks = &work_chunks_dv100pali[0],
  213.       .idct_factor = &dv_idct_factor_hd1080[0],
  214.       .pix_fmt = AV_PIX_FMT_YUV422P,
  215.       .bpm = 8,
  216.       .block_sizes = block_sizes_dv100,
  217.       .audio_stride = 108,
  218.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  219.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  220.       .audio_shuffle = dv_audio_shuffle625,
  221.     },
  222.     { .dsf = 0,
  223.       .video_stype = 0x18,
  224.       .frame_size = 240000,        /* SMPTE-370M - 720p60 100 Mbps */
  225.       .difseg_size = 10,           /* also known as "DVCPRO HD" */
  226.       .n_difchan = 2,
  227.       .time_base = { 1001, 60000 },
  228.       .ltc_divisor = 60,
  229.       .height = 720,
  230.       .width = 960,
  231.       .sar = {{1, 1}, {4, 3}},
  232.       .work_chunks = &work_chunks_dv100ntscp[0],
  233.       .idct_factor = &dv_idct_factor_hd720[0],
  234.       .pix_fmt = AV_PIX_FMT_YUV422P,
  235.       .bpm = 8,
  236.       .block_sizes = block_sizes_dv100,
  237.       .audio_stride = 90,
  238.       .audio_min_samples  = { 1580, 1452, 1053 }, /* for 48, 44.1 and 32kHz */
  239.       .audio_samples_dist = { 1600, 1602, 1602, 1602, 1602 }, /* per SMPTE-314M */
  240.       .audio_shuffle = dv_audio_shuffle525,
  241.     },
  242.     { .dsf = 1,
  243.       .video_stype = 0x18,
  244.       .frame_size = 288000,        /* SMPTE-370M - 720p50 100 Mbps */
  245.       .difseg_size = 12,           /* also known as "DVCPRO HD" */
  246.       .n_difchan = 2,
  247.       .time_base = { 1, 50 },
  248.       .ltc_divisor = 50,
  249.       .height = 720,
  250.       .width = 960,
  251.       .sar = {{1, 1}, {4, 3}},
  252.       .work_chunks = &work_chunks_dv100palp[0],
  253.       .idct_factor = &dv_idct_factor_hd720[0],
  254.       .pix_fmt = AV_PIX_FMT_YUV422P,
  255.       .bpm = 8,
  256.       .block_sizes = block_sizes_dv100,
  257.       .audio_stride = 90,
  258.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  259.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  260.       .audio_shuffle = dv_audio_shuffle625,
  261.     },
  262.     { .dsf = 1,
  263.       .video_stype = 0x1,
  264.       .frame_size = 144000,        /* IEC 61883-5 - 625/50 (PAL) */
  265.       .difseg_size = 12,
  266.       .n_difchan = 1,
  267.       .time_base = { 1, 25 },
  268.       .ltc_divisor = 25,
  269.       .height = 576,
  270.       .width = 720,
  271.       .sar = {{16, 15}, {64, 45}},
  272.       .work_chunks = &work_chunks_dv25pal[0],
  273.       .idct_factor = &dv_idct_factor_sd[0],
  274.       .pix_fmt = AV_PIX_FMT_YUV420P,
  275.       .bpm = 6,
  276.       .block_sizes = block_sizes_dv2550,
  277.       .audio_stride = 108,
  278.       .audio_min_samples  = { 1896, 1742, 1264 }, /* for 48, 44.1 and 32kHz */
  279.       .audio_samples_dist = { 1920, 1920, 1920, 1920, 1920 },
  280.       .audio_shuffle = dv_audio_shuffle625,
  281.     }
  282. };
  283.  
  284. const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
  285.                                   const uint8_t* frame, unsigned buf_size)
  286. {
  287.     int i, dsf, stype;
  288.  
  289.     if(buf_size < DV_PROFILE_BYTES)
  290.         return NULL;
  291.  
  292.     dsf = (frame[3] & 0x80) >> 7;
  293.     stype = frame[80 * 5 + 48 + 3] & 0x1f;
  294.  
  295.     /* 576i50 25Mbps 4:1:1 is a special case */
  296.     if ((dsf == 1 && stype == 0 && frame[4] & 0x07 /* the APT field */) ||
  297.         (stype == 31 && codec && codec->codec_tag==AV_RL32("SL25") && codec->coded_width==720 && codec->coded_height==576)) {
  298.         return &dv_profiles[2];
  299.     }
  300.  
  301.     if(   stype == 0
  302.        && codec
  303.        && (codec->codec_tag==AV_RL32("dvsd") || codec->codec_tag==AV_RL32("CDVC"))
  304.        && codec->coded_width ==720
  305.        && codec->coded_height==576)
  306.         return &dv_profiles[1];
  307.  
  308.     for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++)
  309.         if (dsf == dv_profiles[i].dsf && stype == dv_profiles[i].video_stype)
  310.             return &dv_profiles[i];
  311.  
  312.     /* check if old sys matches and assumes corrupted input */
  313.     if (sys && buf_size == sys->frame_size)
  314.         return sys;
  315.  
  316.     /* hack for trac issue #217, dv files created with QuickTime 3 */
  317.     if ((frame[3] & 0x7f) == 0x3f && frame[80 * 5 + 48 + 3] == 0xff)
  318.         return &dv_profiles[dsf];
  319.  
  320.     return NULL;
  321. }
  322.  
  323. const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
  324.                                   const uint8_t* frame, unsigned buf_size)
  325. {
  326.     return avpriv_dv_frame_profile2(NULL, sys, frame, buf_size);
  327. }
  328.  
  329. const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec)
  330. {
  331.     int i;
  332.     int w, h;
  333.  
  334.     if (codec->coded_width || codec->coded_height) {
  335.         w = codec->coded_width;
  336.         h = codec->coded_height;
  337.     } else {
  338.         w = codec->width;
  339.         h = codec->height;
  340.     }
  341.  
  342.     for (i=0; i<FF_ARRAY_ELEMS(dv_profiles); i++)
  343.        if (h == dv_profiles[i].height  &&
  344.            codec->pix_fmt == dv_profiles[i].pix_fmt &&
  345.            w == dv_profiles[i].width)
  346.                return &dv_profiles[i];
  347.  
  348.     return NULL;
  349. }
  350.  
  351. void ff_dv_print_profiles(void *logctx, int loglevel)
  352. {
  353.     int i;
  354.     for (i = 0; i < FF_ARRAY_ELEMS(dv_profiles); i++) {
  355.         const DVprofile *p = &dv_profiles[i];
  356.         av_log(logctx, loglevel, "Frame size: %dx%d; pixel format: %s, "
  357.                "framerate: %d/%d\n", p->width, p->height, av_get_pix_fmt_name(p->pix_fmt),
  358.                p->time_base.den, p->time_base.num);
  359.     }
  360. }
  361.