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FFmpeg/libavcodec/imm4.c

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  1. /*

  2.  * Infinity IMM4 decoder

  3.  *

  4.  * Copyright (c) 2018 Paul B Mahol

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

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

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

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

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

  19.  * License along with FFmpeg; if not, write to the Free Software

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

  21.  */

  22. 

  23. #include <stdio.h>

  24. #include <stdlib.h>

  25. #include <string.h>

  26. 

  27. #include "libavutil/thread.h"

  28. 

  29. #include "avcodec.h"

  30. #include "bswapdsp.h"

  31. #include "copy_block.h"

  32. #include "get_bits.h"

  33. #include "idctdsp.h"

  34. #include "internal.h"

  35. 

  36. typedef struct IMM4Context {

  37.     BswapDSPContext bdsp;

  38.     GetBitContext  gb;

  39. 

  40.     AVFrame *prev_frame;

  41.     uint8_t *bitstream;

  42.     int bitstream_size;

  43. 

  44.     int changed_size;

  45.     int factor;

  46.     unsigned lo;

  47.     unsigned hi;

  48. 

  49.     ScanTable intra_scantable;

  50.     DECLARE_ALIGNED(32, int16_t, block)[6][64];

  51.     IDCTDSPContext idsp;

  52. } IMM4Context;

  53. 

  54. static const uint8_t intra_cb[] = {

  55.     24, 18, 12

  56. };

  57. 

  58. static const uint8_t inter_cb[] = {

  59.     30, 20, 15

  60. };

  61. 

  62. static const uint8_t cbplo_symbols[] = {

  63.     3, 4, 19, 20, 35, 36, 51, 52

  64. };

  65. 

  66. static const uint8_t cbplo_bits[] = {

  67.     1, 4, 3, 6, 3, 6, 3, 6

  68. };

  69. 

  70. static const uint8_t cbplo_codes[] = {

  71.     1, 1, 1, 1, 2, 2, 3, 3

  72. };

  73. 

  74. static const uint8_t cbphi_bits[] = {

  75.     4, 5, 5, 4, 5, 4, 6, 4, 5, 6, 4, 4, 4, 4, 4, 2

  76. };

  77. 

  78. static const uint8_t cbphi_codes[] = {

  79.     3, 5, 4, 9, 3, 7, 2, 11, 2, 3, 5, 10, 4, 8, 6, 3

  80. };

  81. 

  82. static const uint8_t blktype_symbols[] = {

  83.     0, 1, 2, 3, 4, 16, 17, 18, 19, 20, 32, 33, 34, 35, 48, 50, 51, 52

  84. };

  85. 

  86. static const uint8_t blktype_bits[] = {

  87.     1, 3, 3, 5, 6, 4, 7, 7, 8, 9, 4, 7, 7, 8, 6, 8, 7, 9

  88. };

  89. 

  90. static const uint8_t blktype_codes[] = {

  91.     1, 3, 2, 3, 4, 3, 7, 5, 4, 4, 2, 6, 4, 3, 5, 5, 3, 2

  92. };

  93. 

  94. static const uint16_t block_symbols[] = {

  95.     0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0x81, 0x82, 0x83,

  96.     0x84, 0x85, 0x86, 0x101, 0x102, 0x103, 0x104, 0x181, 0x182, 0x183, 0x201, 0x202,

  97.     0x203, 0x281, 0x282, 0x283, 0x301, 0x302, 0x303, 0x381, 0x382, 0x401, 0x402,

  98.     0x481, 0x482, 0x501, 0x502, 0x581, 0x601, 0x681, 0x701, 0x781, 0x801, 0x881,

  99.     0x901, 0x981, 0xA01, 0xA81, 0xB01, 0xB81, 0xC01, 0xC81, 0xD01, 0x4001, 0x4002,

  100.     0x4003, 0x4081, 0x4082, 0x4101, 0x4181, 0x4201, 0x4281, 0x4301, 0x4381, 0x4401,

  101.     0x4481, 0x4501, 0x4581, 0x4601, 0x4681, 0x4701, 0x4781, 0x4801, 0x4881, 0x4901,

  102.     0x4981, 0x4A01, 0x4A81, 0x4B01, 0x4B81, 0x4C01, 0x4C81, 0x4D01, 0x4D81, 0x4E01,

  103.     0x4E81, 0x4F01, 0x4F81, 0x5001, 0x5081, 0x5101, 0x5181, 0x5201, 0x5281, 0x5301,

  104.     0x5381, 0x5401

  105. };

  106. 

  107. static const uint8_t block_bits[] = {

  108.     7, 2, 4, 6, 7, 8, 9, 9, 10, 10, 11, 11, 11, 3, 6, 8, 10, 11, 12, 4, 8,

  109.     10, 12, 5, 9, 10, 5, 9, 12, 5, 10, 12, 6, 10, 12, 6, 10, 6, 10, 6,

  110.     10, 7, 12, 7, 7, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 11, 11, 12, 12, 4, 9,

  111.     11, 6, 11, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9,

  112.     9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12,

  113.     12, 12

  114. };

  115. 

  116. static const uint8_t block_codes[] = {

  117.     3, 2, 15, 21, 23, 31, 37, 36, 33, 32, 7, 6, 32, 6, 20, 30, 15, 33, 80,

  118.     14, 29, 14, 81, 13, 35, 13, 12, 34, 82, 11, 12, 83, 19, 11, 84, 18,

  119.     10, 17, 9, 16, 8, 22, 85, 21, 20, 28, 27, 33, 32, 31, 30, 29, 28,

  120.     27, 26, 34, 35, 86, 87, 7, 25, 5, 15, 4, 14, 13, 12, 19, 18, 17, 16,

  121.     26, 25, 24, 23, 22, 21, 20, 19, 24, 23, 22, 21, 20, 19, 18, 17, 7,

  122.     6, 5, 4, 36, 37, 38, 39, 88, 89, 90, 91, 92, 93, 94, 95

  123. };

  124. 

  125. static VLC cbplo_tab;

  126. static VLC cbphi_tab;

  127. static VLC blktype_tab;

  128. static VLC block_tab;

  129. 

  130. static int get_cbphi(GetBitContext *gb, int x)

  131. {

  132.     int value;

  133. 

  134.     value = get_vlc2(gb, cbphi_tab.table, cbphi_tab.bits, 1);

  135.     if (value < 0)

  136.         return AVERROR_INVALIDDATA;

  137. 

  138.     return x ? value : 15 - value;

  139. }

  140. 

  141. static int decode_block(AVCodecContext *avctx, GetBitContext *gb,

  142.                         int block, int factor, int flag, int offset)

  143. {

  144.     IMM4Context *s = avctx->priv_data;

  145.     const uint8_t *scantable = s->intra_scantable.permutated;

  146.     int i, last, len, factor2;

  147. 

  148.     for (i = !flag; i < 64; i++) {

  149.         int value;

  150. 

  151.         value = get_vlc2(gb, block_tab.table, block_tab.bits, 1);

  152.         if (value < 0)

  153.             return AVERROR_INVALIDDATA;

  154.         if (value == 0) {

  155.             last = get_bits1(gb);

  156.             len = get_bits(gb, 6);

  157.             factor2 = get_sbits(gb, 8);

  158.         } else {

  159.             factor2 = value & 0x7F;

  160.             last = (value >> 14) & 1;

  161.             len = (value >> 7) & 0x3F;

  162.             if (get_bits1(gb))

  163.                 factor2 = -factor2;

  164.         }

  165.         i += len;

  166.         if (i >= 64)

  167.             break;

  168.         s->block[block][scantable[i]] = offset * (factor2 < 0 ? -1 : 1) + factor * factor2;

  169.         if (last)

  170.             break;

  171.     }

  172. 

  173.     return 0;

  174. }

  175. 

  176. static int decode_blocks(AVCodecContext *avctx, GetBitContext *gb,

  177.                          unsigned cbp, int flag, int offset)

  178. {

  179.     IMM4Context *s = avctx->priv_data;

  180.     const uint8_t *scantable = s->intra_scantable.permutated;

  181.     int ret, i;

  182. 

  183.     memset(s->block, 0, sizeof(s->block));

  184. 

  185.     for (i = 0; i < 6; i++) {

  186.         if (!flag) {

  187.             int x = get_bits(gb, 8);

  188. 

  189.             if (x == 255)

  190.                 x = 128;

  191.             x *= 8;

  192. 

  193.             s->block[i][scantable[0]] = x;

  194.         }

  195. 

  196.         if (cbp & (1 << (5 - i))) {

  197.             ret = decode_block(avctx, gb, i, s->factor, flag, offset);

  198.             if (ret < 0)

  199.                 return ret;

  200.         }

  201.     }

  202. 

  203.     return 0;

  204. }

  205. 

  206. static int decode_intra(AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame)

  207. {

  208.     IMM4Context *s = avctx->priv_data;

  209.     int ret, x, y, offset = 0;

  210. 

  211.     if (s->hi == 0) {

  212.         if (s->lo > 2)

  213.             return AVERROR_INVALIDDATA;

  214.         s->factor = intra_cb[s->lo];

  215.     } else {

  216.         if (s->hi == 1) {

  217.             s->factor = s->lo * 2;

  218.         } else {

  219.             s->factor = s->lo * 2;

  220.         }

  221.     }

  222. 

  223.     if (s->hi) {

  224.         offset = s->factor;

  225.         offset >>= 1;

  226.         if (!(offset & 1))

  227.             offset--;

  228.     }

  229. 

  230.     for (y = 0; y < avctx->height; y += 16) {

  231.         for (x = 0; x < avctx->width; x += 16) {

  232.             unsigned cbphi, cbplo;

  233. 

  234.             cbplo = get_vlc2(gb, cbplo_tab.table, cbplo_tab.bits, 1) >> 4;

  235.             skip_bits1(gb);

  236. 

  237.             cbphi = get_cbphi(gb, 1);

  238. 

  239.             ret = decode_blocks(avctx, gb, cbplo | (cbphi << 2), 0, offset);

  240.             if (ret < 0)

  241.                 return ret;

  242. 

  243.             s->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x,

  244.                              frame->linesize[0], s->block[0]);

  245.             s->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x + 8,

  246.                              frame->linesize[0], s->block[1]);

  247.             s->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x,

  248.                              frame->linesize[0], s->block[2]);

  249.             s->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x + 8,

  250.                              frame->linesize[0], s->block[3]);

  251.             s->idsp.idct_put(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),

  252.                              frame->linesize[1], s->block[4]);

  253.             s->idsp.idct_put(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),

  254.                              frame->linesize[2], s->block[5]);

  255.         }

  256.     }

  257. 

  258.     return 0;

  259. }

  260. 

  261. static int decode_inter(AVCodecContext *avctx, GetBitContext *gb,

  262.                         AVFrame *frame, AVFrame *prev)

  263. {

  264.     IMM4Context *s = avctx->priv_data;

  265.     int ret, x, y, offset = 0;

  266. 

  267.     if (s->hi == 0) {

  268.         if (s->lo > 2)

  269.             return AVERROR_INVALIDDATA;

  270.         s->factor = inter_cb[s->lo];

  271.     } else {

  272.         if (s->hi == 1) {

  273.             s->factor = s->lo * 2;

  274.         } else {

  275.             s->factor = s->lo * 2;

  276.         }

  277.     }

  278. 

  279.     if (s->hi) {

  280.         offset = s->factor;

  281.         offset >>= 1;

  282.         if (!(offset & 1))

  283.             offset--;

  284.     }

  285. 

  286.     for (y = 0; y < avctx->height; y += 16) {

  287.         for (x = 0; x < avctx->width; x += 16) {

  288.             int reverse, intra_block, value;

  289.             unsigned cbphi, cbplo;

  290. 

  291.             if (get_bits1(gb)) {

  292.                 copy_block16(frame->data[0] + y * frame->linesize[0] + x,

  293.                              prev->data[0] + y * prev->linesize[0] + x,

  294.                              frame->linesize[0], prev->linesize[0], 16);

  295.                 copy_block8(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),

  296.                             prev->data[1] + (y >> 1) * prev->linesize[1] + (x >> 1),

  297.                             frame->linesize[1], prev->linesize[1], 8);

  298.                 copy_block8(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),

  299.                             prev->data[2] + (y >> 1) * prev->linesize[2] + (x >> 1),

  300.                             frame->linesize[2], prev->linesize[2], 8);

  301.                 continue;

  302.             }

  303. 

  304.             value = get_vlc2(gb, blktype_tab.table, blktype_tab.bits, 1);

  305.             if (value < 0)

  306.                 return AVERROR_INVALIDDATA;

  307. 

  308.             intra_block = value & 0x07;

  309.             reverse = intra_block == 3;

  310.             if (reverse)

  311.                 skip_bits1(gb);

  312. 

  313.             cbplo = value >> 4;

  314.             cbphi = get_cbphi(gb, reverse);

  315.             if (intra_block) {

  316.                 ret = decode_blocks(avctx, gb, cbplo | (cbphi << 2), 0, offset);

  317.                 if (ret < 0)

  318.                     return ret;

  319. 

  320.                 s->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x,

  321.                                  frame->linesize[0], s->block[0]);

  322.                 s->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x + 8,

  323.                                  frame->linesize[0], s->block[1]);

  324.                 s->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x,

  325.                                  frame->linesize[0], s->block[2]);

  326.                 s->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x + 8,

  327.                                  frame->linesize[0], s->block[3]);

  328.                 s->idsp.idct_put(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),

  329.                                  frame->linesize[1], s->block[4]);

  330.                 s->idsp.idct_put(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),

  331.                                  frame->linesize[2], s->block[5]);

  332.             } else {

  333.                 skip_bits(gb, 2);

  334.                 ret = decode_blocks(avctx, gb, cbplo | (cbphi << 2), 1, offset);

  335.                 if (ret < 0)

  336.                     return ret;

  337. 

  338.                 copy_block16(frame->data[0] + y * frame->linesize[0] + x,

  339.                              prev->data[0] + y * prev->linesize[0] + x,

  340.                              frame->linesize[0], prev->linesize[0], 16);

  341.                 copy_block8(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),

  342.                             prev->data[1] + (y >> 1) * prev->linesize[1] + (x >> 1),

  343.                             frame->linesize[1], prev->linesize[1], 8);

  344.                 copy_block8(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),

  345.                             prev->data[2] + (y >> 1) * prev->linesize[2] + (x >> 1),

  346.                             frame->linesize[2], prev->linesize[2], 8);

  347. 

  348.                 s->idsp.idct_add(frame->data[0] + y * frame->linesize[0] + x,

  349.                                  frame->linesize[0], s->block[0]);

  350.                 s->idsp.idct_add(frame->data[0] + y * frame->linesize[0] + x + 8,

  351.                                  frame->linesize[0], s->block[1]);

  352.                 s->idsp.idct_add(frame->data[0] + (y + 8) * frame->linesize[0] + x,

  353.                                  frame->linesize[0], s->block[2]);

  354.                 s->idsp.idct_add(frame->data[0] + (y + 8) * frame->linesize[0] + x + 8,

  355.                                  frame->linesize[0], s->block[3]);

  356.                 s->idsp.idct_add(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1),

  357.                                  frame->linesize[1], s->block[4]);

  358.                 s->idsp.idct_add(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1),

  359.                                  frame->linesize[2], s->block[5]);

  360.             }

  361.         }

  362.     }

  363. 

  364.     return 0;

  365. }

  366. 

  367. static int decode_frame(AVCodecContext *avctx, void *data,

  368.                         int *got_frame, AVPacket *avpkt)

  369. {

  370.     IMM4Context *s = avctx->priv_data;

  371.     GetBitContext *gb = &s->gb;

  372.     AVFrame *frame = data;

  373.     unsigned type;

  374.     int ret, scaled;

  375. 

  376.     if (avpkt->size <= 32)

  377.         return AVERROR_INVALIDDATA;

  378. 

  379.     av_fast_padded_malloc(&s->bitstream, &s->bitstream_size,

  380.                           FFALIGN(avpkt->size, 4));

  381.     if (!s->bitstream)

  382.         return AVERROR(ENOMEM);

  383. 

  384.     s->bdsp.bswap_buf((uint32_t *)s->bitstream,

  385.                       (uint32_t *)avpkt->data,

  386.                       (avpkt->size + 3) >> 2);

  387. 

  388.     if ((ret = init_get_bits8(gb, s->bitstream, FFALIGN(avpkt->size, 4))) < 0)

  389.         return ret;

  390. 

  391.     avctx->pix_fmt = AV_PIX_FMT_YUV420P;

  392.     avctx->color_range = AVCOL_RANGE_JPEG;

  393. 

  394.     scaled = avpkt->data[8];

  395.     if (scaled < 2) {

  396.         int width, height;

  397.         int mode = avpkt->data[10];

  398. 

  399.         switch (mode) {

  400.         case 1:

  401.             width = 352;

  402.             height = 240;

  403.             break;

  404.         case 2:

  405.             width = 704;

  406.             height = 240;

  407.             break;

  408.         case 4:

  409.             width = 480;

  410.             height = 704;

  411.             break;

  412.         case 17:

  413.             width = 352;

  414.             height = 288;

  415.             break;

  416.         case 18:

  417.             width = 704;

  418.             height = 288;

  419.             break;

  420.         default:

  421.             width = 704;

  422.             height = 576;

  423.             break;

  424.         }

  425. 

  426.         if (s->changed_size == 1 &&

  427.             (avctx->width != width || avctx->height != height)) {

  428.             av_log(avctx, AV_LOG_ERROR, "Frame size change is unsupported.\n");

  429.             return AVERROR_INVALIDDATA;

  430.         }

  431.         avctx->width = width;

  432.         avctx->height = height;

  433.     }

  434. 

  435.     s->changed_size = 1;

  436.     skip_bits_long(gb, 24 * 8);

  437.     type = get_bits_long(gb, 32);

  438.     s->hi = get_bits(gb, 16);

  439.     s->lo = get_bits(gb, 16);

  440. 

  441.     switch (type) {

  442.     case 0x19781977:

  443.         frame->key_frame = 1;

  444.         frame->pict_type = AV_PICTURE_TYPE_I;

  445.         break;

  446.     case 0x12250926:

  447.         frame->key_frame = 0;

  448.         frame->pict_type = AV_PICTURE_TYPE_P;

  449.         break;

  450.     default:

  451.         avpriv_request_sample(avctx, "type %X", type);

  452.         return AVERROR_PATCHWELCOME;

  453.     }

  454. 

  455.     if ((ret = ff_get_buffer(avctx, frame, frame->key_frame ? AV_GET_BUFFER_FLAG_REF : 0)) < 0)

  456.         return ret;

  457. 

  458.     if (frame->key_frame) {

  459.         ret = decode_intra(avctx, gb, frame);

  460.         if (ret < 0)

  461.             return ret;

  462. 

  463.         av_frame_unref(s->prev_frame);

  464.         if ((ret = av_frame_ref(s->prev_frame, frame)) < 0)

  465.             return ret;

  466.     } else {

  467.         if (!s->prev_frame->data[0]) {

  468.             av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n");

  469.             return AVERROR_INVALIDDATA;

  470.         }

  471. 

  472.         ret = decode_inter(avctx, gb, frame, s->prev_frame);

  473.         if (ret < 0)

  474.             return ret;

  475.     }

  476. 

  477.     *got_frame = 1;

  478. 

  479.     return avpkt->size;

  480. }

  481. 

  482. static av_cold void imm4_init_static_data(void)

  483. {

  484.     INIT_VLC_SPARSE_STATIC(&cbplo_tab, 9, FF_ARRAY_ELEMS(cbplo_bits),

  485.                            cbplo_bits, 1, 1, cbplo_codes, 1, 1, cbplo_symbols, 1, 1, 512);

  486. 

  487.     INIT_VLC_SPARSE_STATIC(&cbphi_tab, 6, FF_ARRAY_ELEMS(cbphi_bits),

  488.                            cbphi_bits, 1, 1, cbphi_codes, 1, 1, NULL, 0, 0, 64);

  489. 

  490.     INIT_VLC_SPARSE_STATIC(&blktype_tab, 9, FF_ARRAY_ELEMS(blktype_bits),

  491.                            blktype_bits, 1, 1, blktype_codes, 1, 1, blktype_symbols, 1, 1, 512);

  492. 

  493.     INIT_VLC_SPARSE_STATIC(&block_tab, 12, FF_ARRAY_ELEMS(block_bits),

  494.                            block_bits, 1, 1, block_codes, 1, 1, block_symbols, 2, 2, 4096);

  495. }

  496. 

  497. static av_cold int decode_init(AVCodecContext *avctx)

  498. {

  499.     static AVOnce init_static_once = AV_ONCE_INIT;

  500.     IMM4Context *s = avctx->priv_data;

  501.     uint8_t table[64];

  502. 

  503.     for (int i = 0; i < 64; i++)

  504.         table[i] = i;

  505. 

  506.     ff_bswapdsp_init(&s->bdsp);

  507.     ff_idctdsp_init(&s->idsp, avctx);

  508.     ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, table);

  509. 

  510.     s->prev_frame = av_frame_alloc();

  511.     if (!s->prev_frame)

  512.         return AVERROR(ENOMEM);

  513. 

  514.     ff_thread_once(&init_static_once, imm4_init_static_data);

  515. 

  516.     return 0;

  517. }

  518. 

  519. static av_cold int decode_close(AVCodecContext *avctx)

  520. {

  521.     IMM4Context *s = avctx->priv_data;

  522. 

  523.     av_frame_free(&s->prev_frame);

  524.     av_freep(&s->bitstream);

  525.     s->bitstream_size = 0;

  526. 

  527.     return 0;

  528. }

  529. 

  530. AVCodec ff_imm4_decoder = {

  531.     .name             = "imm4",

  532.     .long_name        = NULL_IF_CONFIG_SMALL("Infinity IMM4"),

  533.     .type             = AVMEDIA_TYPE_VIDEO,

  534.     .id               = AV_CODEC_ID_IMM4,

  535.     .priv_data_size   = sizeof(IMM4Context),

  536.     .init             = decode_init,

  537.     .close            = decode_close,

  538.     .decode           = decode_frame,

  539.     .capabilities     = AV_CODEC_CAP_DR1,

  540.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |

  541.                         FF_CODEC_CAP_INIT_CLEANUP,

  542. };