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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 FFmpeg.

  10.  *

  11.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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/opt.h"

  30. #include "avcodec.h"

  31. #include "dsputil.h"

  32. #include "internal.h"

  33. #include "mpegvideo.h"

  34. #include "dnxhdenc.h"

  35. #include "internal.h"

  36. 

  37. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

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

  39. 

  40. static const AVOption options[]={

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

  42. {NULL}

  43. };

  44. 

  45. static const AVClass class = {

  46.     .class_name = "dnxhd",

  47.     .item_name  = av_default_item_name,

  48.     .option     = options,

  49.     .version    = LIBAVUTIL_VERSION_INT,

  50. };

  51. 

  52. #define LAMBDA_FRAC_BITS 10

  53. 

  54. static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *av_restrict block, const uint8_t *pixels, int line_size)

  55. {

  56.     int i;

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

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

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

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

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

  62.         pixels += line_size;

  63.         block += 8;

  64.     }

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

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

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

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

  69. }

  70. 

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

  72. {

  73.     int i;

  74.     const uint16_t* pixels16 = (const uint16_t*)pixels;

  75.     line_size >>= 1;

  76. 

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

  78.         block[0] = pixels16[0]; block[1] = pixels16[1];

  79.         block[2] = pixels16[2]; block[3] = pixels16[3];

  80.         block[4] = pixels16[4]; block[5] = pixels16[5];

  81.         block[6] = pixels16[6]; block[7] = pixels16[7];

  82.         pixels16 += line_size;

  83.         block += 8;

  84.     }

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

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

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

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

  89. }

  90. 

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

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

  93. {

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

  95.     const int *qmat = n<4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale];

  96.     int last_non_zero = 0;

  97.     int i;

  98. 

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

  100. 

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

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

  103. 

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

  105.         int j = scantable[i];

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

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

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

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

  110.         if (level)

  111.             last_non_zero = i;

  112.     }

  113. 

  114.     return last_non_zero;

  115. }

  116. 

  117. static int dnxhd_init_vlc(DNXHDEncContext *ctx)

  118. {

  119.     int i, j, level, run;

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

  121. 

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

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

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

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

  126. 

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

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

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

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

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

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

  133. 

  134.             MASK_ABS(sign, alevel);

  135.             if (alevel > 64) {

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

  137.                 alevel -= offset<<6;

  138.             }

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

  140.                 if (ctx->cid_table->ac_level[j] >> 1 == alevel &&

  141.                     (!offset || (ctx->cid_table->ac_flags[j] & 1) && offset) &&

  142.                     (!run    || (ctx->cid_table->ac_flags[j] & 2) && run)) {

  143.                     av_assert1(!ctx->vlc_codes[index]);

  144.                     if (alevel) {

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

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

  147.                     } else {

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

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

  150.                     }

  151.                     break;

  152.                 }

  153.             }

  154.             av_assert0(!alevel || j < 257);

  155.             if (offset) {

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

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

  158.             }

  159.         }

  160.     }

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

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

  163.         av_assert0(run < 63);

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

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

  166.     }

  167.     return 0;

  168.  fail:

  169.     return -1;

  170. }

  171. 

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

  173. {

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

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

  176.     int qscale, i;

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

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

  179. 

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

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

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

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

  184. 

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

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

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

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

  189.         }

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

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

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

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

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

  195.         }

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

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

  198. 

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

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

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

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

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

  204.             }

  205.         }

  206.     } else {

  207.         // 10-bit

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

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

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

  211. 

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

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

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

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

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

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

  218.                 // ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) / (qscale * weight_table[i])

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

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

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

  222.             }

  223.         }

  224.     }

  225. 

  226.     ctx->m.q_chroma_intra_matrix16 = ctx->qmatrix_c16;

  227.     ctx->m.q_chroma_intra_matrix   = ctx->qmatrix_c;

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

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

  230. 

  231.     return 0;

  232.  fail:

  233.     return -1;

  234. }

  235. 

  236. static int dnxhd_init_rc(DNXHDEncContext *ctx)

  237. {

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

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

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

  241. 

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

  243.     ctx->qscale = 1;

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

  245.     return 0;

  246.  fail:

  247.     return -1;

  248. }

  249. 

  250. static int dnxhd_encode_init(AVCodecContext *avctx)

  251. {

  252.     DNXHDEncContext *ctx = avctx->priv_data;

  253.     int i, index, bit_depth;

  254. 

  255.     switch (avctx->pix_fmt) {

  256.     case AV_PIX_FMT_YUV422P:

  257.         bit_depth = 8;

  258.         break;

  259.     case AV_PIX_FMT_YUV422P10:

  260.         bit_depth = 10;

  261.         break;

  262.     default:

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

  264.         return -1;

  265.     }

  266. 

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

  268.     if (!ctx->cid) {

  269.         av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD. Valid DNxHD profiles:\n");

  270.         ff_dnxhd_print_profiles(avctx, AV_LOG_ERROR);

  271.         return -1;

  272.     }

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

  274. 

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

  276.     av_assert0(index >= 0);

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

  278. 

  279.     ctx->m.avctx = avctx;

  280.     ctx->m.mb_intra = 1;

  281.     ctx->m.h263_aic = 1;

  282. 

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

  284. 

  285.     ff_dct_common_init(&ctx->m);

  286.     ff_dct_encode_init(&ctx->m);

  287. 

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

  289.         ctx->m.dct_quantize = ff_dct_quantize_c;

  290. 

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

  292.        ctx->m.dct_quantize = dnxhd_10bit_dct_quantize;

  293.        ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym;

  294.        ctx->block_width_l2 = 4;

  295.     } else {

  296.        ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym;

  297.        ctx->block_width_l2 = 3;

  298.     }

  299. 

  300.     if (ARCH_X86)

  301.         ff_dnxhdenc_init_x86(ctx);

  302. 

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

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

  305. 

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

  307.         ctx->interlaced = 1;

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

  309.     }

  310. 

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

  312. 

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

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

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

  316.         return -1;

  317. 

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

  319.     if (ctx->nitris_compat)

  320.         ctx->min_padding = 1600;

  321. 

  322.     if (dnxhd_init_vlc(ctx) < 0)

  323.         return -1;

  324.     if (dnxhd_init_rc(ctx) < 0)

  325.         return -1;

  326. 

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

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

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

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

  331. 

  332.     ctx->frame.key_frame = 1;

  333.     ctx->frame.pict_type = AV_PICTURE_TYPE_I;

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

  335. 

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

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

  338.         return -1;

  339.     }

  340. 

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

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

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

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

  345.     }

  346. 

  347.     return 0;

  348.  fail: //for FF_ALLOCZ_OR_GOTO

  349.     return -1;

  350. }

  351. 

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

  353. {

  354.     DNXHDEncContext *ctx = avctx->priv_data;

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

  356. 

  357.     memset(buf, 0, 640);

  358. 

  359.     memcpy(buf, header_prefix, 5);

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

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

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

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

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

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

  366. 

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

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

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

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

  371. 

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

  373. 

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

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

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

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

  378. 

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

  380.     return 0;

  381. }

  382. 

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

  384. {

  385.     int nbits;

  386.     if (diff < 0) {

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

  388.         diff--;

  389.     } else {

  390.         nbits = av_log2_16bit(2*diff);

  391.     }

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

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

  394. }

  395. 

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

  397. {

  398.     int last_non_zero = 0;

  399.     int slevel, i, j;

  400. 

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

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

  403. 

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

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

  406.         slevel = block[j];

  407.         if (slevel) {

  408.             int run_level = i - last_non_zero - 1;

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

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

  411.             if (run_level)

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

  413.             last_non_zero = i;

  414.         }

  415.     }

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

  417. }

  418. 

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

  420. {

  421.     const uint8_t *weight_matrix;

  422.     int level;

  423.     int i;

  424. 

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

  426. 

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

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

  429.         level = block[j];

  430.         if (level) {

  431.             if (level < 0) {

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

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

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

  435.                         level += 8;

  436.                     level >>= 4;

  437.                 } else {

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

  439.                         level += 32;

  440.                     level >>= 6;

  441.                 }

  442.                 level = -level;

  443.             } else {

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

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

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

  447.                         level += 8;

  448.                     level >>= 4;

  449.                 } else {

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

  451.                         level += 32;

  452.                     level >>= 6;

  453.                 }

  454.             }

  455.             block[j] = level;

  456.         }

  457.     }

  458. }

  459. 

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

  461. {

  462.     int score = 0;

  463.     int i;

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

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

  466.     return score;

  467. }

  468. 

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

  470. {

  471.     int last_non_zero = 0;

  472.     int bits = 0;

  473.     int i, j, level;

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

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

  476.         level = block[j];

  477.         if (level) {

  478.             int run_level = i - last_non_zero - 1;

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

  480.             last_non_zero = i;

  481.         }

  482.     }

  483.     return bits;

  484. }

  485. 

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

  487. {

  488.     const int bs = ctx->block_width_l2;

  489.     const int bw = 1 << bs;

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

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

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

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

  494. 

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

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

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

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

  499. 

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

  501.         if (ctx->interlaced) {

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

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

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

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

  506.         } else {

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

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

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

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

  511.         }

  512.     } else {

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

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

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

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

  517.     }

  518. }

  519. 

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

  521. {

  522.     const static uint8_t component[8]={0,0,1,2,0,0,1,2};

  523.     return component[i];

  524. }

  525. 

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

  527. {

  528.     DNXHDEncContext *ctx = avctx->priv_data;

  529.     int mb_y = jobnr, mb_x;

  530.     int qscale = ctx->qscale;

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

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

  533. 

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

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

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

  537. 

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

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

  540.         int ssd     = 0;

  541.         int ac_bits = 0;

  542.         int dc_bits = 0;

  543.         int i;

  544. 

  545.         dnxhd_get_blocks(ctx, mb_x, mb_y);

  546. 

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

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

  549.             int overflow, nbits, diff, last_index;

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

  551. 

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

  553.             last_index = ctx->m.dct_quantize(&ctx->m, block, 4&(2*i), qscale, &overflow);

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

  555. 

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

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

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

  559. 

  560.             av_assert1(nbits < ctx->cid_table->bit_depth + 4);

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

  562. 

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

  564. 

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

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

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

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

  569.             }

  570.         }

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

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

  573.     }

  574.     return 0;

  575. }

  576. 

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

  578. {

  579.     DNXHDEncContext *ctx = avctx->priv_data;

  580.     int mb_y = jobnr, mb_x;

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

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

  583. 

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

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

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

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

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

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

  590.         int i;

  591. 

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

  593. 

  594.         dnxhd_get_blocks(ctx, mb_x, mb_y);

  595. 

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

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

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

  599.             int last_index = ctx->m.dct_quantize(&ctx->m, block, 4&(2*i), qscale, &overflow);

  600.             //START_TIMER;

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

  602.             //STOP_TIMER("encode_block");

  603.         }

  604.     }

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

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

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

  608.     return 0;

  609. }

  610. 

  611. static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)

  612. {

  613.     int mb_y, mb_x;

  614.     int offset = 0;

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

  616.         int thread_size;

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

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

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

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

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

  622.         }

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

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

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

  626.         offset += thread_size;

  627.     }

  628. }

  629. 

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

  631. {

  632.     DNXHDEncContext *ctx = avctx->priv_data;

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

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

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

  636. 

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

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

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

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

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

  642.             int sum;

  643.             int varc;

  644. 

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

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

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

  648.             } else {

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

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

  651.                 sum = varc = 0;

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

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

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

  655.                         sum  += val;

  656.                         varc += val * val;

  657.                     }

  658.                 }

  659.             }

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

  661. 

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

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

  664.         }

  665.     } else { // 10-bit

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

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

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

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

  670.             int sum = 0;

  671.             int sqsum = 0;

  672.             int mean, sqmean;

  673.             int i, j;

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

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

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

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

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

  679.                     sum += sample;

  680.                     sqsum += sample * sample;

  681.                     // 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX

  682.                 }

  683.                 pix += linesize;

  684.             }

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

  686.             sqmean = sqsum >> 8;

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

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

  689.         }

  690.     }

  691.     return 0;

  692. }

  693. 

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

  695. {

  696.     int lambda, up_step, down_step;

  697.     int last_lower = INT_MAX, last_higher = 0;

  698.     int x, y, q;

  699. 

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

  701.         ctx->qscale = q;

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

  703.     }

  704.     up_step = down_step = 2<<LAMBDA_FRAC_BITS;

  705.     lambda = ctx->lambda;

  706. 

  707.     for (;;) {

  708.         int bits = 0;

  709.         int end = 0;

  710.         if (lambda == last_higher) {

  711.             lambda++;

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

  713.         }

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

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

  716.                 unsigned min = UINT_MAX;

  717.                 int qscale = 1;

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

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

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

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

  722.                     if (score < min) {

  723.                         min = score;

  724.                         qscale = q;

  725.                     }

  726.                 }

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

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

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

  730.             }

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

  732.             if (bits > ctx->frame_bits)

  733.                 break;

  734.         }

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

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

  737.         if (end) {

  738.             if (bits > ctx->frame_bits)

  739.                 return -1;

  740.             break;

  741.         }

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

  743.             last_lower = FFMIN(lambda, last_lower);

  744.             if (last_higher != 0)

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

  746.             else

  747.                 lambda -= down_step;

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

  749.             up_step = 1<<LAMBDA_FRAC_BITS;

  750.             lambda = FFMAX(1, lambda);

  751.             if (lambda == last_lower)

  752.                 break;

  753.         } else {

  754.             last_higher = FFMAX(lambda, last_higher);

  755.             if (last_lower != INT_MAX)

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

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

  758.                 return -1;

  759.             else

  760.                 lambda += up_step;

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

  762.             down_step = 1<<LAMBDA_FRAC_BITS;

  763.         }

  764.     }

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

  766.     ctx->lambda = lambda;

  767.     return 0;

  768. }

  769. 

  770. static int dnxhd_find_qscale(DNXHDEncContext *ctx)

  771. {

  772.     int bits = 0;

  773.     int up_step = 1;

  774.     int down_step = 1;

  775.     int last_higher = 0;

  776.     int last_lower = INT_MAX;

  777.     int qscale;

  778.     int x, y;

  779. 

  780.     qscale = ctx->qscale;

  781.     for (;;) {

  782.         bits = 0;

  783.         ctx->qscale = qscale;

  784.         // XXX avoid recalculating bits

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

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

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

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

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

  790.             if (bits > ctx->frame_bits)

  791.                 break;

  792.         }

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

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

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

  796.             if (qscale == 1)

  797.                 return 1;

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

  799.                 qscale = last_higher;

  800.                 break;

  801.             }

  802.             last_lower = FFMIN(qscale, last_lower);

  803.             if (last_higher != 0)

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

  805.             else

  806.                 qscale -= down_step++;

  807.             if (qscale < 1)

  808.                 qscale = 1;

  809.             up_step = 1;

  810.         } else {

  811.             if (last_lower == qscale + 1)

  812.                 break;

  813.             last_higher = FFMAX(qscale, last_higher);

  814.             if (last_lower != INT_MAX)

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

  816.             else

  817.                 qscale += up_step++;

  818.             down_step = 1;

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

  820.                 return -1;

  821.         }

  822.     }

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

  824.     ctx->qscale = qscale;

  825.     return 0;

  826. }

  827. 

  828. #define BUCKET_BITS 8

  829. #define RADIX_PASSES 4

  830. #define NBUCKETS (1 << BUCKET_BITS)

  831. 

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

  833. {

  834.     value >>= shift;

  835.     value &= NBUCKETS - 1;

  836.     return NBUCKETS - 1 - value;

  837. }

  838. 

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

  840. {

  841.     int i, j;

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

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

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

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

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

  847.             v >>= BUCKET_BITS;

  848.         }

  849.         av_assert1(!v);

  850.     }

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

  852.         int offset = size;

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

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

  855.         av_assert1(!buckets[j][0]);

  856.     }

  857. }

  858. 

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

  860. {

  861.     int shift = pass * BUCKET_BITS;

  862.     int i;

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

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

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

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

  867.     }

  868. }

  869. 

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

  871. {

  872.     int buckets[RADIX_PASSES][NBUCKETS];

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

  874.     radix_count(data, size, buckets);

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

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

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

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

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

  880.     }

  881.     av_free(tmp);

  882. }

  883. 

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

  885. {

  886.     int max_bits = 0;

  887.     int ret, x, y;

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

  889.         return -1;

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

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

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

  893.             int delta_bits;

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

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

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

  897.             if (!RC_VARIANCE) {

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

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

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

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

  902.                     : INT_MIN; //avoid increasing qscale

  903.             }

  904.         }

  905.         max_bits += 31; //worst padding

  906.     }

  907.     if (!ret) {

  908.         if (RC_VARIANCE)

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

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

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

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

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

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

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

  916.         }

  917.     }

  918.     return 0;

  919. }

  920. 

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

  922. {

  923.     int i;

  924. 

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

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

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

  928.     }

  929. 

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

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

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

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

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

  935.     }

  936. 

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

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

  939. }

  940. 

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

  942.                                 const AVFrame *frame, int *got_packet)

  943. {

  944.     DNXHDEncContext *ctx = avctx->priv_data;

  945.     int first_field = 1;

  946.     int offset, i, ret;

  947.     uint8_t *buf;

  948. 

  949.     if ((ret = ff_alloc_packet2(avctx, pkt, ctx->cid_table->frame_size)) < 0)

  950.         return ret;

  951.     buf = pkt->data;

  952. 

  953.     dnxhd_load_picture(ctx, frame);

  954. 

  955.  encode_coding_unit:

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

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

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

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

  960.     }

  961. 

  962.     dnxhd_write_header(avctx, buf);

  963. 

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

  965.         ret = dnxhd_encode_rdo(avctx, ctx);

  966.     else

  967.         ret = dnxhd_encode_fast(avctx, ctx);

  968.     if (ret < 0) {

  969.         av_log(avctx, AV_LOG_ERROR,

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

  971.         return -1;

  972.     }

  973. 

  974.     dnxhd_setup_threads_slices(ctx);

  975. 

  976.     offset = 0;

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

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

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

  980.         av_assert1(!(ctx->slice_size[i] & 3));

  981.     }

  982. 

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

  984. 

  985.     av_assert1(640 + offset + 4 <= ctx->cid_table->coding_unit_size);

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

  987. 

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

  989. 

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

  991.         first_field     = 0;

  992.         ctx->cur_field ^= 1;

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

  994.         goto encode_coding_unit;

  995.     }

  996. 

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

  998. 

  999.     pkt->flags |= AV_PKT_FLAG_KEY;

  1000.     *got_packet = 1;

  1001.     return 0;

  1002. }

  1003. 

  1004. static int dnxhd_encode_end(AVCodecContext *avctx)

  1005. {

  1006.     DNXHDEncContext *ctx = avctx->priv_data;

  1007.     int max_level = 1<<(ctx->cid_table->bit_depth+2);

  1008.     int i;

  1009. 

  1010.     av_free(ctx->vlc_codes-max_level*2);

  1011.     av_free(ctx->vlc_bits -max_level*2);

  1012.     av_freep(&ctx->run_codes);

  1013.     av_freep(&ctx->run_bits);

  1014. 

  1015.     av_freep(&ctx->mb_bits);

  1016.     av_freep(&ctx->mb_qscale);

  1017.     av_freep(&ctx->mb_rc);

  1018.     av_freep(&ctx->mb_cmp);

  1019.     av_freep(&ctx->slice_size);

  1020.     av_freep(&ctx->slice_offs);

  1021. 

  1022.     av_freep(&ctx->qmatrix_c);

  1023.     av_freep(&ctx->qmatrix_l);

  1024.     av_freep(&ctx->qmatrix_c16);

  1025.     av_freep(&ctx->qmatrix_l16);

  1026. 

  1027.     for (i = 1; i < avctx->thread_count; i++)

  1028.         av_freep(&ctx->thread[i]);

  1029. 

  1030.     return 0;

  1031. }

  1032. 

  1033. static const AVCodecDefault dnxhd_defaults[] = {

  1034.     { "qmax", "1024" }, /* Maximum quantization scale factor allowed for VC-3 */

  1035.     { NULL },

  1036. };

  1037. 

  1038. AVCodec ff_dnxhd_encoder = {

  1039.     .name           = "dnxhd",

  1040.     .type           = AVMEDIA_TYPE_VIDEO,

  1041.     .id             = AV_CODEC_ID_DNXHD,

  1042.     .priv_data_size = sizeof(DNXHDEncContext),

  1043.     .init           = dnxhd_encode_init,

  1044.     .encode2        = dnxhd_encode_picture,

  1045.     .close          = dnxhd_encode_end,

  1046.     .capabilities   = CODEC_CAP_SLICE_THREADS,

  1047.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P,

  1048.                                                   AV_PIX_FMT_YUV422P10,

  1049.                                                   AV_PIX_FMT_NONE },

  1050.     .long_name      = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),

  1051.     .priv_class     = &class,

  1052.     .defaults       = dnxhd_defaults,

  1053. };