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FFmpeg/libavcodec/dnxhdenc.c

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  1. /*

  2.  * VC3/DNxHD encoder

  3.  * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>

  4.  * Copyright (c) 2011 MirriAd Ltd

  5.  *

  6.  * VC-3 encoder funded by the British Broadcasting Corporation

  7.  * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>

  8.  *

  9.  * This file is part of Libav.

  10.  *

  11.  * Libav is free software; you can redistribute it and/or

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

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

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

  15.  *

  16.  * Libav is distributed in the hope that it will be useful,

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

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

  19.  * Lesser General Public License for more details.

  20.  *

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

  22.  * License along with Libav; if not, write to the Free Software

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

  24.  */

  25. 

  26. //#define DEBUG

  27. #define RC_VARIANCE 1 // use variance or ssd for fast rc

  28. 

  29. #include "libavutil/attributes.h"

  30. #include "libavutil/internal.h"

  31. #include "libavutil/opt.h"

  32. #include "avcodec.h"

  33. #include "dsputil.h"

  34. #include "internal.h"

  35. #include "mpegvideo.h"

  36. #include "dnxhdenc.h"

  37. 

  38. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  39. #define DNX10BIT_QMAT_SHIFT 18 // The largest value that will not lead to overflow for 10bit samples.

  40. 

  41. static const AVOption options[]={

  42.     {"nitris_compat", "encode with Avid Nitris compatibility", offsetof(DNXHDEncContext, nitris_compat), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, VE},

  43. {NULL}

  44. };

  45. static const AVClass class = { "dnxhd", av_default_item_name, options, LIBAVUTIL_VERSION_INT };

  46. 

  47. #define LAMBDA_FRAC_BITS 10

  48. 

  49. static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *restrict block, const uint8_t *pixels, int line_size)

  50. {

  51.     int i;

  52.     for (i = 0; i < 4; i++) {

  53.         block[0] = pixels[0]; block[1] = pixels[1];

  54.         block[2] = pixels[2]; block[3] = pixels[3];

  55.         block[4] = pixels[4]; block[5] = pixels[5];

  56.         block[6] = pixels[6]; block[7] = pixels[7];

  57.         pixels += line_size;

  58.         block += 8;

  59.     }

  60.     memcpy(block,      block -  8, sizeof(*block) * 8);

  61.     memcpy(block +  8, block - 16, sizeof(*block) * 8);

  62.     memcpy(block + 16, block - 24, sizeof(*block) * 8);

  63.     memcpy(block + 24, block - 32, sizeof(*block) * 8);

  64. }

  65. 

  66. static av_always_inline void dnxhd_10bit_get_pixels_8x4_sym(int16_t *restrict block, const uint8_t *pixels, int line_size)

  67. {

  68.     int i;

  69. 

  70.     block += 32;

  71. 

  72.     for (i = 0; i < 4; i++) {

  73.         memcpy(block + i     * 8, pixels + i * line_size, 8 * sizeof(*block));

  74.         memcpy(block - (i+1) * 8, pixels + i * line_size, 8 * sizeof(*block));

  75.     }

  76. }

  77. 

  78. static int dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int16_t *block,

  79.                                     int n, int qscale, int *overflow)

  80. {

  81.     const uint8_t *scantable= ctx->intra_scantable.scantable;

  82.     const int *qmat = ctx->q_intra_matrix[qscale];

  83.     int last_non_zero = 0;

  84.     int i;

  85. 

  86.     ctx->dsp.fdct(block);

  87. 

  88.     // Divide by 4 with rounding, to compensate scaling of DCT coefficients

  89.     block[0] = (block[0] + 2) >> 2;

  90. 

  91.     for (i = 1; i < 64; ++i) {

  92.         int j = scantable[i];

  93.         int sign = block[j] >> 31;

  94.         int level = (block[j] ^ sign) - sign;

  95.         level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT;

  96.         block[j] = (level ^ sign) - sign;

  97.         if (level)

  98.             last_non_zero = i;

  99.     }

  100. 

  101.     return last_non_zero;

  102. }

  103. 

  104. static av_cold int dnxhd_init_vlc(DNXHDEncContext *ctx)

  105. {

  106.     int i, j, level, run;

  107.     int max_level = 1<<(ctx->cid_table->bit_depth+2);

  108. 

  109.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_codes, max_level*4*sizeof(*ctx->vlc_codes), fail);

  110.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_bits,  max_level*4*sizeof(*ctx->vlc_bits) , fail);

  111.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_codes, 63*2,                                fail);

  112.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_bits,  63,                                  fail);

  113. 

  114.     ctx->vlc_codes += max_level*2;

  115.     ctx->vlc_bits  += max_level*2;

  116.     for (level = -max_level; level < max_level; level++) {

  117.         for (run = 0; run < 2; run++) {

  118.             int index = (level<<1)|run;

  119.             int sign, offset = 0, alevel = level;

  120. 

  121.             MASK_ABS(sign, alevel);

  122.             if (alevel > 64) {

  123.                 offset = (alevel-1)>>6;

  124.                 alevel -= offset<<6;

  125.             }

  126.             for (j = 0; j < 257; j++) {

  127.                 if (ctx->cid_table->ac_level[j] == alevel &&

  128.                     (!offset || (ctx->cid_table->ac_index_flag[j] && offset)) &&

  129.                     (!run    || (ctx->cid_table->ac_run_flag  [j] && run))) {

  130.                     assert(!ctx->vlc_codes[index]);

  131.                     if (alevel) {

  132.                         ctx->vlc_codes[index] = (ctx->cid_table->ac_codes[j]<<1)|(sign&1);

  133.                         ctx->vlc_bits [index] = ctx->cid_table->ac_bits[j]+1;

  134.                     } else {

  135.                         ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j];

  136.                         ctx->vlc_bits [index] = ctx->cid_table->ac_bits [j];

  137.                     }

  138.                     break;

  139.                 }

  140.             }

  141.             assert(!alevel || j < 257);

  142.             if (offset) {

  143.                 ctx->vlc_codes[index] = (ctx->vlc_codes[index]<<ctx->cid_table->index_bits)|offset;

  144.                 ctx->vlc_bits [index]+= ctx->cid_table->index_bits;

  145.             }

  146.         }

  147.     }

  148.     for (i = 0; i < 62; i++) {

  149.         int run = ctx->cid_table->run[i];

  150.         assert(run < 63);

  151.         ctx->run_codes[run] = ctx->cid_table->run_codes[i];

  152.         ctx->run_bits [run] = ctx->cid_table->run_bits[i];

  153.     }

  154.     return 0;

  155.  fail:

  156.     return -1;

  157. }

  158. 

  159. static av_cold int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias)

  160. {

  161.     // init first elem to 1 to avoid div by 0 in convert_matrix

  162.     uint16_t weight_matrix[64] = {1,}; // convert_matrix needs uint16_t*

  163.     int qscale, i;

  164.     const uint8_t *luma_weight_table   = ctx->cid_table->luma_weight;

  165.     const uint8_t *chroma_weight_table = ctx->cid_table->chroma_weight;

  166. 

  167.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l,   (ctx->m.avctx->qmax+1) * 64 *     sizeof(int),      fail);

  168.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c,   (ctx->m.avctx->qmax+1) * 64 *     sizeof(int),      fail);

  169.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);

  170.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);

  171. 

  172.     if (ctx->cid_table->bit_depth == 8) {

  173.         for (i = 1; i < 64; i++) {

  174.             int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];

  175.             weight_matrix[j] = ctx->cid_table->luma_weight[i];

  176.         }

  177.         ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_l, ctx->qmatrix_l16, weight_matrix,

  178.                           ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);

  179.         for (i = 1; i < 64; i++) {

  180.             int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];

  181.             weight_matrix[j] = ctx->cid_table->chroma_weight[i];

  182.         }

  183.         ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_c, ctx->qmatrix_c16, weight_matrix,

  184.                           ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);

  185. 

  186.         for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {

  187.             for (i = 0; i < 64; i++) {

  188.                 ctx->qmatrix_l  [qscale]   [i] <<= 2; ctx->qmatrix_c  [qscale]   [i] <<= 2;

  189.                 ctx->qmatrix_l16[qscale][0][i] <<= 2; ctx->qmatrix_l16[qscale][1][i] <<= 2;

  190.                 ctx->qmatrix_c16[qscale][0][i] <<= 2; ctx->qmatrix_c16[qscale][1][i] <<= 2;

  191.             }

  192.         }

  193.     } else {

  194.         // 10-bit

  195.         for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {

  196.             for (i = 1; i < 64; i++) {

  197.                 int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];

  198. 

  199.                 // The quantization formula from the VC-3 standard is:

  200.                 // quantized = sign(block[i]) * floor(abs(block[i]/s) * p / (qscale * weight_table[i]))

  201.                 // Where p is 32 for 8-bit samples and 8 for 10-bit ones.

  202.                 // The s factor compensates scaling of DCT coefficients done by the DCT routines,

  203.                 // and therefore is not present in standard.  It's 8 for 8-bit samples and 4 for 10-bit ones.

  204.                 // We want values of ctx->qtmatrix_l and ctx->qtmatrix_r to be:

  205.                 // ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) / (qscale * weight_table[i])

  206.                 // For 10-bit samples, p / s == 2

  207.                 ctx->qmatrix_l[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * luma_weight_table[i]);

  208.                 ctx->qmatrix_c[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) / (qscale * chroma_weight_table[i]);

  209.             }

  210.         }

  211.     }

  212. 

  213.     return 0;

  214.  fail:

  215.     return -1;

  216. }

  217. 

  218. static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx)

  219. {

  220.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_rc, 8160*ctx->m.avctx->qmax*sizeof(RCEntry), fail);

  221.     if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)

  222.         FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_cmp, ctx->m.mb_num*sizeof(RCCMPEntry), fail);

  223. 

  224.     ctx->frame_bits = (ctx->cid_table->coding_unit_size - 640 - 4 - ctx->min_padding) * 8;

  225.     ctx->qscale = 1;

  226.     ctx->lambda = 2<<LAMBDA_FRAC_BITS; // qscale 2

  227.     return 0;

  228.  fail:

  229.     return -1;

  230. }

  231. 

  232. static av_cold int dnxhd_encode_init(AVCodecContext *avctx)

  233. {

  234.     DNXHDEncContext *ctx = avctx->priv_data;

  235.     int i, index, bit_depth;

  236. 

  237.     switch (avctx->pix_fmt) {

  238.     case AV_PIX_FMT_YUV422P:

  239.         bit_depth = 8;

  240.         break;

  241.     case AV_PIX_FMT_YUV422P10:

  242.         bit_depth = 10;

  243.         break;

  244.     default:

  245.         av_log(avctx, AV_LOG_ERROR, "pixel format is incompatible with DNxHD\n");

  246.         return -1;

  247.     }

  248. 

  249.     ctx->cid = ff_dnxhd_find_cid(avctx, bit_depth);

  250.     if (!ctx->cid) {

  251.         av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD\n");

  252.         return -1;

  253.     }

  254.     av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid);

  255. 

  256.     index = ff_dnxhd_get_cid_table(ctx->cid);

  257.     ctx->cid_table = &ff_dnxhd_cid_table[index];

  258. 

  259.     ctx->m.avctx = avctx;

  260.     ctx->m.mb_intra = 1;

  261.     ctx->m.h263_aic = 1;

  262. 

  263.     avctx->bits_per_raw_sample = ctx->cid_table->bit_depth;

  264. 

  265.     ff_dsputil_init(&ctx->m.dsp, avctx);

  266.     ff_dct_common_init(&ctx->m);

  267.     if (!ctx->m.dct_quantize)

  268.         ctx->m.dct_quantize = ff_dct_quantize_c;

  269. 

  270.     if (ctx->cid_table->bit_depth == 10) {

  271.        ctx->m.dct_quantize = dnxhd_10bit_dct_quantize;

  272.        ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym;

  273.        ctx->block_width_l2 = 4;

  274.     } else {

  275.        ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym;

  276.        ctx->block_width_l2 = 3;

  277.     }

  278. 

  279.     if (ARCH_X86)

  280.         ff_dnxhdenc_init_x86(ctx);

  281. 

  282.     ctx->m.mb_height = (avctx->height + 15) / 16;

  283.     ctx->m.mb_width  = (avctx->width  + 15) / 16;

  284. 

  285.     if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {

  286.         ctx->interlaced = 1;

  287.         ctx->m.mb_height /= 2;

  288.     }

  289. 

  290.     ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width;

  291. 

  292.     if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)

  293.         ctx->m.intra_quant_bias = avctx->intra_quant_bias;

  294.     if (dnxhd_init_qmat(ctx, ctx->m.intra_quant_bias, 0) < 0) // XXX tune lbias/cbias

  295.         return -1;

  296. 

  297.     // Avid Nitris hardware decoder requires a minimum amount of padding in the coding unit payload

  298.     if (ctx->nitris_compat)

  299.         ctx->min_padding = 1600;

  300. 

  301.     if (dnxhd_init_vlc(ctx) < 0)

  302.         return -1;

  303.     if (dnxhd_init_rc(ctx) < 0)

  304.         return -1;

  305. 

  306.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size, ctx->m.mb_height*sizeof(uint32_t), fail);

  307.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs, ctx->m.mb_height*sizeof(uint32_t), fail);

  308.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits,    ctx->m.mb_num   *sizeof(uint16_t), fail);

  309.     FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale,  ctx->m.mb_num   *sizeof(uint8_t),  fail);

  310. 

  311.     ctx->frame.key_frame = 1;

  312.     ctx->frame.pict_type = AV_PICTURE_TYPE_I;

  313.     ctx->m.avctx->coded_frame = &ctx->frame;

  314. 

  315.     if (avctx->thread_count > MAX_THREADS) {

  316.         av_log(avctx, AV_LOG_ERROR, "too many threads\n");

  317.         return -1;

  318.     }

  319. 

  320.     ctx->thread[0] = ctx;

  321.     for (i = 1; i < avctx->thread_count; i++) {

  322.         ctx->thread[i] =  av_malloc(sizeof(DNXHDEncContext));

  323.         memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));

  324.     }

  325. 

  326.     return 0;

  327.  fail: //for FF_ALLOCZ_OR_GOTO

  328.     return -1;

  329. }

  330. 

  331. static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)

  332. {

  333.     DNXHDEncContext *ctx = avctx->priv_data;

  334.     const uint8_t header_prefix[5] = { 0x00,0x00,0x02,0x80,0x01 };

  335. 

  336.     memset(buf, 0, 640);

  337. 

  338.     memcpy(buf, header_prefix, 5);

  339.     buf[5] = ctx->interlaced ? ctx->cur_field+2 : 0x01;

  340.     buf[6] = 0x80; // crc flag off

  341.     buf[7] = 0xa0; // reserved

  342.     AV_WB16(buf + 0x18, avctx->height>>ctx->interlaced); // ALPF

  343.     AV_WB16(buf + 0x1a, avctx->width);  // SPL

  344.     AV_WB16(buf + 0x1d, avctx->height>>ctx->interlaced); // NAL

  345. 

  346.     buf[0x21] = ctx->cid_table->bit_depth == 10 ? 0x58 : 0x38;

  347.     buf[0x22] = 0x88 + (ctx->interlaced<<2);

  348.     AV_WB32(buf + 0x28, ctx->cid); // CID

  349.     buf[0x2c] = ctx->interlaced ? 0 : 0x80;

  350. 

  351.     buf[0x5f] = 0x01; // UDL

  352. 

  353.     buf[0x167] = 0x02; // reserved

  354.     AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS

  355.     buf[0x16d] = ctx->m.mb_height; // Ns

  356.     buf[0x16f] = 0x10; // reserved

  357. 

  358.     ctx->msip = buf + 0x170;

  359.     return 0;

  360. }

  361. 

  362. static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff)

  363. {

  364.     int nbits;

  365.     if (diff < 0) {

  366.         nbits = av_log2_16bit(-2*diff);

  367.         diff--;

  368.     } else {

  369.         nbits = av_log2_16bit(2*diff);

  370.     }

  371.     put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits,

  372.              (ctx->cid_table->dc_codes[nbits]<<nbits) + (diff & ((1 << nbits) - 1)));

  373. }

  374. 

  375. static av_always_inline void dnxhd_encode_block(DNXHDEncContext *ctx, int16_t *block, int last_index, int n)

  376. {

  377.     int last_non_zero = 0;

  378.     int slevel, i, j;

  379. 

  380.     dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]);

  381.     ctx->m.last_dc[n] = block[0];

  382. 

  383.     for (i = 1; i <= last_index; i++) {

  384.         j = ctx->m.intra_scantable.permutated[i];

  385.         slevel = block[j];

  386.         if (slevel) {

  387.             int run_level = i - last_non_zero - 1;

  388.             int rlevel = (slevel<<1)|!!run_level;

  389.             put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);

  390.             if (run_level)

  391.                 put_bits(&ctx->m.pb, ctx->run_bits[run_level], ctx->run_codes[run_level]);

  392.             last_non_zero = i;

  393.         }

  394.     }

  395.     put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB

  396. }

  397. 

  398. static av_always_inline void dnxhd_unquantize_c(DNXHDEncContext *ctx, int16_t *block, int n, int qscale, int last_index)

  399. {

  400.     const uint8_t *weight_matrix;

  401.     int level;

  402.     int i;

  403. 

  404.     weight_matrix = (n&2) ? ctx->cid_table->chroma_weight : ctx->cid_table->luma_weight;

  405. 

  406.     for (i = 1; i <= last_index; i++) {

  407.         int j = ctx->m.intra_scantable.permutated[i];

  408.         level = block[j];

  409.         if (level) {

  410.             if (level < 0) {

  411.                 level = (1-2*level) * qscale * weight_matrix[i];

  412.                 if (ctx->cid_table->bit_depth == 10) {

  413.                     if (weight_matrix[i] != 8)

  414.                         level += 8;

  415.                     level >>= 4;

  416.                 } else {

  417.                     if (weight_matrix[i] != 32)

  418.                         level += 32;

  419.                     level >>= 6;

  420.                 }

  421.                 level = -level;

  422.             } else {

  423.                 level = (2*level+1) * qscale * weight_matrix[i];

  424.                 if (ctx->cid_table->bit_depth == 10) {

  425.                     if (weight_matrix[i] != 8)

  426.                         level += 8;

  427.                     level >>= 4;

  428.                 } else {

  429.                     if (weight_matrix[i] != 32)

  430.                         level += 32;

  431.                     level >>= 6;

  432.                 }

  433.             }

  434.             block[j] = level;

  435.         }

  436.     }

  437. }

  438. 

  439. static av_always_inline int dnxhd_ssd_block(int16_t *qblock, int16_t *block)

  440. {

  441.     int score = 0;

  442.     int i;

  443.     for (i = 0; i < 64; i++)

  444.         score += (block[i] - qblock[i]) * (block[i] - qblock[i]);

  445.     return score;

  446. }

  447. 

  448. static av_always_inline int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, int16_t *block, int last_index)

  449. {

  450.     int last_non_zero = 0;

  451.     int bits = 0;

  452.     int i, j, level;

  453.     for (i = 1; i <= last_index; i++) {

  454.         j = ctx->m.intra_scantable.permutated[i];

  455.         level = block[j];

  456.         if (level) {

  457.             int run_level = i - last_non_zero - 1;

  458.             bits += ctx->vlc_bits[(level<<1)|!!run_level]+ctx->run_bits[run_level];

  459.             last_non_zero = i;

  460.         }

  461.     }

  462.     return bits;

  463. }

  464. 

  465. static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)

  466. {

  467.     const int bs = ctx->block_width_l2;

  468.     const int bw = 1 << bs;

  469.     const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize)   + (mb_x << bs+1);

  470.     const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);

  471.     const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);

  472.     DSPContext *dsp = &ctx->m.dsp;

  473. 

  474.     dsp->get_pixels(ctx->blocks[0], ptr_y,      ctx->m.linesize);

  475.     dsp->get_pixels(ctx->blocks[1], ptr_y + bw, ctx->m.linesize);

  476.     dsp->get_pixels(ctx->blocks[2], ptr_u,      ctx->m.uvlinesize);

  477.     dsp->get_pixels(ctx->blocks[3], ptr_v,      ctx->m.uvlinesize);

  478. 

  479.     if (mb_y+1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) {

  480.         if (ctx->interlaced) {

  481.             ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset,      ctx->m.linesize);

  482.             ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize);

  483.             ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset,     ctx->m.uvlinesize);

  484.             ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset,     ctx->m.uvlinesize);

  485.         } else {

  486.             dsp->clear_block(ctx->blocks[4]);

  487.             dsp->clear_block(ctx->blocks[5]);

  488.             dsp->clear_block(ctx->blocks[6]);

  489.             dsp->clear_block(ctx->blocks[7]);

  490.         }

  491.     } else {

  492.         dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset,      ctx->m.linesize);

  493.         dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize);

  494.         dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset,     ctx->m.uvlinesize);

  495.         dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset,     ctx->m.uvlinesize);

  496.     }

  497. }

  498. 

  499. static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)

  500. {

  501.     if (i&2) {

  502.         ctx->m.q_intra_matrix16 = ctx->qmatrix_c16;

  503.         ctx->m.q_intra_matrix   = ctx->qmatrix_c;

  504.         return 1 + (i&1);

  505.     } else {

  506.         ctx->m.q_intra_matrix16 = ctx->qmatrix_l16;

  507.         ctx->m.q_intra_matrix   = ctx->qmatrix_l;

  508.         return 0;

  509.     }

  510. }

  511. 

  512. static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)

  513. {

  514.     DNXHDEncContext *ctx = avctx->priv_data;

  515.     int mb_y = jobnr, mb_x;

  516.     int qscale = ctx->qscale;

  517.     LOCAL_ALIGNED_16(int16_t, block, [64]);

  518.     ctx = ctx->thread[threadnr];

  519. 

  520.     ctx->m.last_dc[0] =

  521.     ctx->m.last_dc[1] =

  522.     ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2);

  523. 

  524.     for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

  525.         unsigned mb = mb_y * ctx->m.mb_width + mb_x;

  526.         int ssd     = 0;

  527.         int ac_bits = 0;

  528.         int dc_bits = 0;

  529.         int i;

  530. 

  531.         dnxhd_get_blocks(ctx, mb_x, mb_y);

  532. 

  533.         for (i = 0; i < 8; i++) {

  534.             int16_t *src_block = ctx->blocks[i];

  535.             int overflow, nbits, diff, last_index;

  536.             int n = dnxhd_switch_matrix(ctx, i);

  537. 

  538.             memcpy(block, src_block, 64*sizeof(*block));

  539.             last_index = ctx->m.dct_quantize(&ctx->m, block, i, qscale, &overflow);

  540.             ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index);

  541. 

  542.             diff = block[0] - ctx->m.last_dc[n];

  543.             if (diff < 0) nbits = av_log2_16bit(-2*diff);

  544.             else          nbits = av_log2_16bit( 2*diff);

  545. 

  546.             assert(nbits < ctx->cid_table->bit_depth + 4);

  547.             dc_bits += ctx->cid_table->dc_bits[nbits] + nbits;

  548. 

  549.             ctx->m.last_dc[n] = block[0];

  550. 

  551.             if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) {

  552.                 dnxhd_unquantize_c(ctx, block, i, qscale, last_index);

  553.                 ctx->m.dsp.idct(block);

  554.                 ssd += dnxhd_ssd_block(block, src_block);

  555.             }

  556.         }

  557.         ctx->mb_rc[qscale][mb].ssd = ssd;

  558.         ctx->mb_rc[qscale][mb].bits = ac_bits+dc_bits+12+8*ctx->vlc_bits[0];

  559.     }

  560.     return 0;

  561. }

  562. 

  563. static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)

  564. {

  565.     DNXHDEncContext *ctx = avctx->priv_data;

  566.     int mb_y = jobnr, mb_x;

  567.     ctx = ctx->thread[threadnr];

  568.     init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr], ctx->slice_size[jobnr]);

  569. 

  570.     ctx->m.last_dc[0] =

  571.     ctx->m.last_dc[1] =

  572.     ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2);

  573.     for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

  574.         unsigned mb = mb_y * ctx->m.mb_width + mb_x;

  575.         int qscale = ctx->mb_qscale[mb];

  576.         int i;

  577. 

  578.         put_bits(&ctx->m.pb, 12, qscale<<1);

  579. 

  580.         dnxhd_get_blocks(ctx, mb_x, mb_y);

  581. 

  582.         for (i = 0; i < 8; i++) {

  583.             int16_t *block = ctx->blocks[i];

  584.             int overflow, n = dnxhd_switch_matrix(ctx, i);

  585.             int last_index = ctx->m.dct_quantize(&ctx->m, block, i,

  586.                                                  qscale, &overflow);

  587.             //START_TIMER;

  588.             dnxhd_encode_block(ctx, block, last_index, n);

  589.             //STOP_TIMER("encode_block");

  590.         }

  591.     }

  592.     if (put_bits_count(&ctx->m.pb)&31)

  593.         put_bits(&ctx->m.pb, 32-(put_bits_count(&ctx->m.pb)&31), 0);

  594.     flush_put_bits(&ctx->m.pb);

  595.     return 0;

  596. }

  597. 

  598. static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)

  599. {

  600.     int mb_y, mb_x;

  601.     int offset = 0;

  602.     for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {

  603.         int thread_size;

  604.         ctx->slice_offs[mb_y] = offset;

  605.         ctx->slice_size[mb_y] = 0;

  606.         for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

  607.             unsigned mb = mb_y * ctx->m.mb_width + mb_x;

  608.             ctx->slice_size[mb_y] += ctx->mb_bits[mb];

  609.         }

  610.         ctx->slice_size[mb_y] = (ctx->slice_size[mb_y]+31)&~31;

  611.         ctx->slice_size[mb_y] >>= 3;

  612.         thread_size = ctx->slice_size[mb_y];

  613.         offset += thread_size;

  614.     }

  615. }

  616. 

  617. static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)

  618. {

  619.     DNXHDEncContext *ctx = avctx->priv_data;

  620.     int mb_y = jobnr, mb_x, x, y;

  621.     int partial_last_row = (mb_y == ctx->m.mb_height - 1) &&

  622.                            ((avctx->height >> ctx->interlaced) & 0xF);

  623. 

  624.     ctx = ctx->thread[threadnr];

  625.     if (ctx->cid_table->bit_depth == 8) {

  626.         uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize);

  627.         for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) {

  628.             unsigned mb  = mb_y * ctx->m.mb_width + mb_x;

  629.             int sum;

  630.             int varc;

  631. 

  632.             if (!partial_last_row && mb_x * 16 <= avctx->width - 16) {

  633.                 sum  = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);

  634.                 varc = ctx->m.dsp.pix_norm1(pix, ctx->m.linesize);

  635.             } else {

  636.                 int bw = FFMIN(avctx->width - 16 * mb_x, 16);

  637.                 int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);

  638.                 sum = varc = 0;

  639.                 for (y = 0; y < bh; y++) {

  640.                     for (x = 0; x < bw; x++) {

  641.                         uint8_t val = pix[x + y * ctx->m.linesize];

  642.                         sum  += val;

  643.                         varc += val * val;

  644.                     }

  645.                 }

  646.             }

  647.             varc = (varc - (((unsigned)sum * sum) >> 8) + 128) >> 8;

  648. 

  649.             ctx->mb_cmp[mb].value = varc;

  650.             ctx->mb_cmp[mb].mb = mb;

  651.         }

  652.     } else { // 10-bit

  653.         int const linesize = ctx->m.linesize >> 1;

  654.         for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x) {

  655.             uint16_t *pix = (uint16_t*)ctx->thread[0]->src[0] + ((mb_y << 4) * linesize) + (mb_x << 4);

  656.             unsigned mb  = mb_y * ctx->m.mb_width + mb_x;

  657.             int sum = 0;

  658.             int sqsum = 0;

  659.             int mean, sqmean;

  660.             int i, j;

  661.             // Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8.

  662.             for (i = 0; i < 16; ++i) {

  663.                 for (j = 0; j < 16; ++j) {

  664.                     // Turn 16-bit pixels into 10-bit ones.

  665.                     int const sample = (unsigned)pix[j] >> 6;

  666.                     sum += sample;

  667.                     sqsum += sample * sample;

  668.                     // 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX

  669.                 }

  670.                 pix += linesize;

  671.             }

  672.             mean = sum >> 8; // 16*16 == 2^8

  673.             sqmean = sqsum >> 8;

  674.             ctx->mb_cmp[mb].value = sqmean - mean * mean;

  675.             ctx->mb_cmp[mb].mb = mb;

  676.         }

  677.     }

  678.     return 0;

  679. }

  680. 

  681. static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)

  682. {

  683.     int lambda, up_step, down_step;

  684.     int last_lower = INT_MAX, last_higher = 0;

  685.     int x, y, q;

  686. 

  687.     for (q = 1; q < avctx->qmax; q++) {

  688.         ctx->qscale = q;

  689.         avctx->execute2(avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);

  690.     }

  691.     up_step = down_step = 2<<LAMBDA_FRAC_BITS;

  692.     lambda = ctx->lambda;

  693. 

  694.     for (;;) {

  695.         int bits = 0;

  696.         int end = 0;

  697.         if (lambda == last_higher) {

  698.             lambda++;

  699.             end = 1; // need to set final qscales/bits

  700.         }

  701.         for (y = 0; y < ctx->m.mb_height; y++) {

  702.             for (x = 0; x < ctx->m.mb_width; x++) {

  703.                 unsigned min = UINT_MAX;

  704.                 int qscale = 1;

  705.                 int mb = y*ctx->m.mb_width+x;

  706.                 for (q = 1; q < avctx->qmax; q++) {

  707.                     unsigned score = ctx->mb_rc[q][mb].bits*lambda+

  708.                         ((unsigned)ctx->mb_rc[q][mb].ssd<<LAMBDA_FRAC_BITS);

  709.                     if (score < min) {

  710.                         min = score;

  711.                         qscale = q;

  712.                     }

  713.                 }

  714.                 bits += ctx->mb_rc[qscale][mb].bits;

  715.                 ctx->mb_qscale[mb] = qscale;

  716.                 ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits;

  717.             }

  718.             bits = (bits+31)&~31; // padding

  719.             if (bits > ctx->frame_bits)

  720.                 break;

  721.         }

  722.         //av_dlog(ctx->m.avctx, "lambda %d, up %u, down %u, bits %d, frame %d\n",

  723.         //        lambda, last_higher, last_lower, bits, ctx->frame_bits);

  724.         if (end) {

  725.             if (bits > ctx->frame_bits)

  726.                 return -1;

  727.             break;

  728.         }

  729.         if (bits < ctx->frame_bits) {

  730.             last_lower = FFMIN(lambda, last_lower);

  731.             if (last_higher != 0)

  732.                 lambda = (lambda+last_higher)>>1;

  733.             else

  734.                 lambda -= down_step;

  735.             down_step = FFMIN((int64_t)down_step*5, INT_MAX);

  736.             up_step = 1<<LAMBDA_FRAC_BITS;

  737.             lambda = FFMAX(1, lambda);

  738.             if (lambda == last_lower)

  739.                 break;

  740.         } else {

  741.             last_higher = FFMAX(lambda, last_higher);

  742.             if (last_lower != INT_MAX)

  743.                 lambda = (lambda+last_lower)>>1;

  744.             else if ((int64_t)lambda + up_step > INT_MAX)

  745.                 return -1;

  746.             else

  747.                 lambda += up_step;

  748.             up_step = FFMIN((int64_t)up_step*5, INT_MAX);

  749.             down_step = 1<<LAMBDA_FRAC_BITS;

  750.         }

  751.     }

  752.     //av_dlog(ctx->m.avctx, "out lambda %d\n", lambda);

  753.     ctx->lambda = lambda;

  754.     return 0;

  755. }

  756. 

  757. static int dnxhd_find_qscale(DNXHDEncContext *ctx)

  758. {

  759.     int bits = 0;

  760.     int up_step = 1;

  761.     int down_step = 1;

  762.     int last_higher = 0;

  763.     int last_lower = INT_MAX;

  764.     int qscale;

  765.     int x, y;

  766. 

  767.     qscale = ctx->qscale;

  768.     for (;;) {

  769.         bits = 0;

  770.         ctx->qscale = qscale;

  771.         // XXX avoid recalculating bits

  772.         ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);

  773.         for (y = 0; y < ctx->m.mb_height; y++) {

  774.             for (x = 0; x < ctx->m.mb_width; x++)

  775.                 bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;

  776.             bits = (bits+31)&~31; // padding

  777.             if (bits > ctx->frame_bits)

  778.                 break;

  779.         }

  780.         //av_dlog(ctx->m.avctx, "%d, qscale %d, bits %d, frame %d, higher %d, lower %d\n",

  781.         //        ctx->m.avctx->frame_number, qscale, bits, ctx->frame_bits, last_higher, last_lower);

  782.         if (bits < ctx->frame_bits) {

  783.             if (qscale == 1)

  784.                 return 1;

  785.             if (last_higher == qscale - 1) {

  786.                 qscale = last_higher;

  787.                 break;

  788.             }

  789.             last_lower = FFMIN(qscale, last_lower);

  790.             if (last_higher != 0)

  791.                 qscale = (qscale+last_higher)>>1;

  792.             else

  793.                 qscale -= down_step++;

  794.             if (qscale < 1)

  795.                 qscale = 1;

  796.             up_step = 1;

  797.         } else {

  798.             if (last_lower == qscale + 1)

  799.                 break;

  800.             last_higher = FFMAX(qscale, last_higher);

  801.             if (last_lower != INT_MAX)

  802.                 qscale = (qscale+last_lower)>>1;

  803.             else

  804.                 qscale += up_step++;

  805.             down_step = 1;

  806.             if (qscale >= ctx->m.avctx->qmax)

  807.                 return -1;

  808.         }

  809.     }

  810.     //av_dlog(ctx->m.avctx, "out qscale %d\n", qscale);

  811.     ctx->qscale = qscale;

  812.     return 0;

  813. }

  814. 

  815. #define BUCKET_BITS 8

  816. #define RADIX_PASSES 4

  817. #define NBUCKETS (1 << BUCKET_BITS)

  818. 

  819. static inline int get_bucket(int value, int shift)

  820. {

  821.     value >>= shift;

  822.     value &= NBUCKETS - 1;

  823.     return NBUCKETS - 1 - value;

  824. }

  825. 

  826. static void radix_count(const RCCMPEntry *data, int size, int buckets[RADIX_PASSES][NBUCKETS])

  827. {

  828.     int i, j;

  829.     memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);

  830.     for (i = 0; i < size; i++) {

  831.         int v = data[i].value;

  832.         for (j = 0; j < RADIX_PASSES; j++) {

  833.             buckets[j][get_bucket(v, 0)]++;

  834.             v >>= BUCKET_BITS;

  835.         }

  836.         assert(!v);

  837.     }

  838.     for (j = 0; j < RADIX_PASSES; j++) {

  839.         int offset = size;

  840.         for (i = NBUCKETS - 1; i >= 0; i--)

  841.             buckets[j][i] = offset -= buckets[j][i];

  842.         assert(!buckets[j][0]);

  843.     }

  844. }

  845. 

  846. static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data, int size, int buckets[NBUCKETS], int pass)

  847. {

  848.     int shift = pass * BUCKET_BITS;

  849.     int i;

  850.     for (i = 0; i < size; i++) {

  851.         int v = get_bucket(data[i].value, shift);

  852.         int pos = buckets[v]++;

  853.         dst[pos] = data[i];

  854.     }

  855. }

  856. 

  857. static void radix_sort(RCCMPEntry *data, int size)

  858. {

  859.     int buckets[RADIX_PASSES][NBUCKETS];

  860.     RCCMPEntry *tmp = av_malloc(sizeof(*tmp) * size);

  861.     radix_count(data, size, buckets);

  862.     radix_sort_pass(tmp, data, size, buckets[0], 0);

  863.     radix_sort_pass(data, tmp, size, buckets[1], 1);

  864.     if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {

  865.         radix_sort_pass(tmp, data, size, buckets[2], 2);

  866.         radix_sort_pass(data, tmp, size, buckets[3], 3);

  867.     }

  868.     av_free(tmp);

  869. }

  870. 

  871. static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)

  872. {

  873.     int max_bits = 0;

  874.     int ret, x, y;

  875.     if ((ret = dnxhd_find_qscale(ctx)) < 0)

  876.         return -1;

  877.     for (y = 0; y < ctx->m.mb_height; y++) {

  878.         for (x = 0; x < ctx->m.mb_width; x++) {

  879.             int mb = y*ctx->m.mb_width+x;

  880.             int delta_bits;

  881.             ctx->mb_qscale[mb] = ctx->qscale;

  882.             ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;

  883.             max_bits += ctx->mb_rc[ctx->qscale][mb].bits;

  884.             if (!RC_VARIANCE) {

  885.                 delta_bits = ctx->mb_rc[ctx->qscale][mb].bits-ctx->mb_rc[ctx->qscale+1][mb].bits;

  886.                 ctx->mb_cmp[mb].mb = mb;

  887.                 ctx->mb_cmp[mb].value = delta_bits ?

  888.                     ((ctx->mb_rc[ctx->qscale][mb].ssd-ctx->mb_rc[ctx->qscale+1][mb].ssd)*100)/delta_bits

  889.                     : INT_MIN; //avoid increasing qscale

  890.             }

  891.         }

  892.         max_bits += 31; //worst padding

  893.     }

  894.     if (!ret) {

  895.         if (RC_VARIANCE)

  896.             avctx->execute2(avctx, dnxhd_mb_var_thread, NULL, NULL, ctx->m.mb_height);

  897.         radix_sort(ctx->mb_cmp, ctx->m.mb_num);

  898.         for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {

  899.             int mb = ctx->mb_cmp[x].mb;

  900.             max_bits -= ctx->mb_rc[ctx->qscale][mb].bits - ctx->mb_rc[ctx->qscale+1][mb].bits;

  901.             ctx->mb_qscale[mb] = ctx->qscale+1;

  902.             ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale+1][mb].bits;

  903.         }

  904.     }

  905.     return 0;

  906. }

  907. 

  908. static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)

  909. {

  910.     int i;

  911. 

  912.     for (i = 0; i < 3; i++) {

  913.         ctx->frame.data[i]     = frame->data[i];

  914.         ctx->frame.linesize[i] = frame->linesize[i];

  915.     }

  916. 

  917.     for (i = 0; i < ctx->m.avctx->thread_count; i++) {

  918.         ctx->thread[i]->m.linesize    = ctx->frame.linesize[0]<<ctx->interlaced;

  919.         ctx->thread[i]->m.uvlinesize  = ctx->frame.linesize[1]<<ctx->interlaced;

  920.         ctx->thread[i]->dct_y_offset  = ctx->m.linesize  *8;

  921.         ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;

  922.     }

  923. 

  924.     ctx->frame.interlaced_frame = frame->interlaced_frame;

  925.     ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;

  926. }

  927. 

  928. static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,

  929.                                 const AVFrame *frame, int *got_packet)

  930. {

  931.     DNXHDEncContext *ctx = avctx->priv_data;

  932.     int first_field = 1;

  933.     int offset, i, ret;

  934.     uint8_t *buf;

  935. 

  936.     if ((ret = ff_alloc_packet(pkt, ctx->cid_table->frame_size)) < 0) {

  937.         av_log(avctx, AV_LOG_ERROR, "output buffer is too small to compress picture\n");

  938.         return ret;

  939.     }

  940.     buf = pkt->data;

  941. 

  942.     dnxhd_load_picture(ctx, frame);

  943. 

  944.  encode_coding_unit:

  945.     for (i = 0; i < 3; i++) {

  946.         ctx->src[i] = ctx->frame.data[i];

  947.         if (ctx->interlaced && ctx->cur_field)

  948.             ctx->src[i] += ctx->frame.linesize[i];

  949.     }

  950. 

  951.     dnxhd_write_header(avctx, buf);

  952. 

  953.     if (avctx->mb_decision == FF_MB_DECISION_RD)

  954.         ret = dnxhd_encode_rdo(avctx, ctx);

  955.     else

  956.         ret = dnxhd_encode_fast(avctx, ctx);

  957.     if (ret < 0) {

  958.         av_log(avctx, AV_LOG_ERROR,

  959.                "picture could not fit ratecontrol constraints, increase qmax\n");

  960.         return -1;

  961.     }

  962. 

  963.     dnxhd_setup_threads_slices(ctx);

  964. 

  965.     offset = 0;

  966.     for (i = 0; i < ctx->m.mb_height; i++) {

  967.         AV_WB32(ctx->msip + i * 4, offset);

  968.         offset += ctx->slice_size[i];

  969.         assert(!(ctx->slice_size[i] & 3));

  970.     }

  971. 

  972.     avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);

  973. 

  974.     assert(640 + offset + 4 <= ctx->cid_table->coding_unit_size);

  975.     memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);

  976. 

  977.     AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF

  978. 

  979.     if (ctx->interlaced && first_field) {

  980.         first_field     = 0;

  981.         ctx->cur_field ^= 1;

  982.         buf      += ctx->cid_table->coding_unit_size;

  983.         goto encode_coding_unit;

  984.     }

  985. 

  986.     ctx->frame.quality = ctx->qscale*FF_QP2LAMBDA;

  987. 

  988.     pkt->flags |= AV_PKT_FLAG_KEY;

  989.     *got_packet = 1;

  990.     return 0;

  991. }

  992. 

  993. static av_cold int dnxhd_encode_end(AVCodecContext *avctx)

  994. {

  995.     DNXHDEncContext *ctx = avctx->priv_data;

  996.     int max_level = 1<<(ctx->cid_table->bit_depth+2);

  997.     int i;

  998. 

  999.     av_free(ctx->vlc_codes-max_level*2);

  1000.     av_free(ctx->vlc_bits -max_level*2);

  1001.     av_freep(&ctx->run_codes);

  1002.     av_freep(&ctx->run_bits);

  1003. 

  1004.     av_freep(&ctx->mb_bits);

  1005.     av_freep(&ctx->mb_qscale);

  1006.     av_freep(&ctx->mb_rc);

  1007.     av_freep(&ctx->mb_cmp);

  1008.     av_freep(&ctx->slice_size);

  1009.     av_freep(&ctx->slice_offs);

  1010. 

  1011.     av_freep(&ctx->qmatrix_c);

  1012.     av_freep(&ctx->qmatrix_l);

  1013.     av_freep(&ctx->qmatrix_c16);

  1014.     av_freep(&ctx->qmatrix_l16);

  1015. 

  1016.     for (i = 1; i < avctx->thread_count; i++)

  1017.         av_freep(&ctx->thread[i]);

  1018. 

  1019.     return 0;

  1020. }

  1021. 

  1022. AVCodec ff_dnxhd_encoder = {

  1023.     .name           = "dnxhd",

  1024.     .type           = AVMEDIA_TYPE_VIDEO,

  1025.     .id             = AV_CODEC_ID_DNXHD,

  1026.     .priv_data_size = sizeof(DNXHDEncContext),

  1027.     .init           = dnxhd_encode_init,

  1028.     .encode2        = dnxhd_encode_picture,

  1029.     .close          = dnxhd_encode_end,

  1030.     .capabilities   = CODEC_CAP_SLICE_THREADS,

  1031.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P,

  1032.                                                   AV_PIX_FMT_YUV422P10,

  1033.                                                   AV_PIX_FMT_NONE },

  1034.     .long_name      = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),

  1035.     .priv_class     = &class,

  1036. };