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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 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. }