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FFmpeg/libavcodec/libx264.c

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  1. /*

  2.  * H.264 encoding using the x264 library

  3.  * Copyright (C) 2005  Mans Rullgard <mans@mansr.com>

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

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

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

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

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

  11.  *

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

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

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

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

  20.  */

  21. 

  22. #include "libavutil/opt.h"

  23. #include "libavutil/pixdesc.h"

  24. #include "avcodec.h"

  25. #include "internal.h"

  26. #include <x264.h>

  27. #include <float.h>

  28. #include <math.h>

  29. #include <stdio.h>

  30. #include <stdlib.h>

  31. #include <string.h>

  32. 

  33. typedef struct X264Context {

  34.     AVClass        *class;

  35.     x264_param_t    params;

  36.     x264_t         *enc;

  37.     x264_picture_t  pic;

  38.     uint8_t        *sei;

  39.     int             sei_size;

  40.     AVFrame         out_pic;

  41.     char *preset;

  42.     char *tune;

  43.     char *profile;

  44.     char *level;

  45.     int fastfirstpass;

  46.     char *stats;

  47.     char *wpredp;

  48.     char *x264opts;

  49.     float crf;

  50.     float crf_max;

  51.     int cqp;

  52.     int aq_mode;

  53.     float aq_strength;

  54.     char *psy_rd;

  55.     int psy;

  56.     int rc_lookahead;

  57.     int weightp;

  58.     int weightb;

  59.     int ssim;

  60.     int intra_refresh;

  61.     int b_bias;

  62.     int b_pyramid;

  63.     int mixed_refs;

  64.     int dct8x8;

  65.     int fast_pskip;

  66.     int aud;

  67.     int mbtree;

  68.     char *deblock;

  69.     float cplxblur;

  70.     char *partitions;

  71.     int direct_pred;

  72.     int slice_max_size;

  73. } X264Context;

  74. 

  75. static void X264_log(void *p, int level, const char *fmt, va_list args)

  76. {

  77.     static const int level_map[] = {

  78.         [X264_LOG_ERROR]   = AV_LOG_ERROR,

  79.         [X264_LOG_WARNING] = AV_LOG_WARNING,

  80.         [X264_LOG_INFO]    = AV_LOG_INFO,

  81.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG

  82.     };

  83. 

  84.     if (level < 0 || level > X264_LOG_DEBUG)

  85.         return;

  86. 

  87.     av_vlog(p, level_map[level], fmt, args);

  88. }

  89. 

  90. 

  91. static int encode_nals(AVCodecContext *ctx, uint8_t *buf, int size,

  92.                        x264_nal_t *nals, int nnal, int skip_sei)

  93. {

  94.     X264Context *x4 = ctx->priv_data;

  95.     uint8_t *p = buf;

  96.     int i;

  97. 

  98.     /* Write the SEI as part of the first frame. */

  99.     if (x4->sei_size > 0 && nnal > 0) {

  100.         if (x4->sei_size > size) {

  101.             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");

  102.             return -1;

  103.         }

  104.         memcpy(p, x4->sei, x4->sei_size);

  105.         p += x4->sei_size;

  106.         x4->sei_size = 0;

  107.         av_freep(&x4->sei);

  108.     }

  109. 

  110.     for (i = 0; i < nnal; i++){

  111.         /* Don't put the SEI in extradata. */

  112.         if (skip_sei && nals[i].i_type == NAL_SEI) {

  113.             x4->sei_size = nals[i].i_payload;

  114.             x4->sei      = av_malloc(x4->sei_size);

  115.             memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);

  116.             continue;

  117.         }

  118.         if (nals[i].i_payload > (size - (p - buf))) {

  119.             // return only complete nals which fit in buf

  120.             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");

  121.             break;

  122.         }

  123.         memcpy(p, nals[i].p_payload, nals[i].i_payload);

  124.         p += nals[i].i_payload;

  125.     }

  126. 

  127.     return p - buf;

  128. }

  129. 

  130. static int avfmt2_csp(int avfmt)

  131. {

  132.     switch (avfmt) {

  133.     case PIX_FMT_YUV420P:

  134.     case PIX_FMT_YUVJ420P:

  135.     case PIX_FMT_YUV420P9:

  136.     case PIX_FMT_YUV420P10:

  137.         return X264_CSP_I420;

  138. #ifdef X264_CSP_I444

  139.     case PIX_FMT_YUV444P:

  140.         return X264_CSP_I444;

  141. #endif

  142. #ifdef X264_CSP_BGR

  143.     case PIX_FMT_BGR24:

  144.         return X264_CSP_BGR;

  145. 

  146.     case PIX_FMT_RGB24:

  147.         return X264_CSP_RGB;

  148. #endif

  149.     default:

  150.         return X264_CSP_NONE;

  151.     }

  152. }

  153. 

  154. static int avfmt2_num_planes(int avfmt)

  155. {

  156.     switch (avfmt) {

  157.     case PIX_FMT_YUV420P:

  158.     case PIX_FMT_YUVJ420P:

  159.     case PIX_FMT_YUV420P9:

  160.     case PIX_FMT_YUV420P10:

  161.     case PIX_FMT_YUV444P:

  162.         return 3;

  163. 

  164.     case PIX_FMT_BGR24:

  165.     case PIX_FMT_RGB24:

  166.         return 1;

  167. 

  168.     default:

  169.         return 3;

  170.     }

  171. }

  172. 

  173. static int X264_frame(AVCodecContext *ctx, uint8_t *buf,

  174.                       int orig_bufsize, void *data)

  175. {

  176.     X264Context *x4 = ctx->priv_data;

  177.     AVFrame *frame = data;

  178.     x264_nal_t *nal;

  179.     int nnal, i;

  180.     x264_picture_t pic_out;

  181.     int bufsize;

  182. 

  183.     x264_picture_init( &x4->pic );

  184.     x4->pic.img.i_csp   = avfmt2_csp(ctx->pix_fmt);

  185.     if (x264_bit_depth > 8)

  186.         x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;

  187.     x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);

  188. 

  189.     if (frame) {

  190.         for (i = 0; i < x4->pic.img.i_plane; i++) {

  191.             x4->pic.img.plane[i]    = frame->data[i];

  192.             x4->pic.img.i_stride[i] = frame->linesize[i];

  193.         }

  194. 

  195.         x4->pic.i_pts  = frame->pts;

  196.         x4->pic.i_type =

  197.             frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :

  198.             frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :

  199.             frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :

  200.                                             X264_TYPE_AUTO;

  201.         if (x4->params.b_tff != frame->top_field_first) {

  202.             x4->params.b_tff = frame->top_field_first;

  203.             x264_encoder_reconfig(x4->enc, &x4->params);

  204.         }

  205.         if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den

  206.          || x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {

  207.             x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;

  208.             x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;

  209.             x264_encoder_reconfig(x4->enc, &x4->params);

  210.         }

  211.     }

  212. 

  213.     do {

  214.         bufsize = orig_bufsize;

  215.     if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)

  216.         return -1;

  217. 

  218.     bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);

  219.     if (bufsize < 0)

  220.         return -1;

  221.     } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc));

  222. 

  223.     /* FIXME: libx264 now provides DTS, but AVFrame doesn't have a field for it. */

  224.     x4->out_pic.pts = pic_out.i_pts;

  225. 

  226.     switch (pic_out.i_type) {

  227.     case X264_TYPE_IDR:

  228.     case X264_TYPE_I:

  229.         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;

  230.         break;

  231.     case X264_TYPE_P:

  232.         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;

  233.         break;

  234.     case X264_TYPE_B:

  235.     case X264_TYPE_BREF:

  236.         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;

  237.         break;

  238.     }

  239. 

  240.     x4->out_pic.key_frame = pic_out.b_keyframe;

  241.     if (bufsize)

  242.         x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;

  243. 

  244.     return bufsize;

  245. }

  246. 

  247. static av_cold int X264_close(AVCodecContext *avctx)

  248. {

  249.     X264Context *x4 = avctx->priv_data;

  250. 

  251.     av_freep(&avctx->extradata);

  252.     av_free(x4->sei);

  253. 

  254.     if (x4->enc)

  255.         x264_encoder_close(x4->enc);

  256. 

  257.     return 0;

  258. }

  259. 

  260. #define OPT_STR(opt, param)                                                   \

  261.     do {                                                                      \

  262.         int ret;                                                              \

  263.         if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \

  264.             if(ret == X264_PARAM_BAD_NAME)                                    \

  265.                 av_log(avctx, AV_LOG_ERROR,                                   \

  266.                         "bad option '%s': '%s'\n", opt, param);               \

  267.             else                                                              \

  268.                 av_log(avctx, AV_LOG_ERROR,                                   \

  269.                         "bad value for '%s': '%s'\n", opt, param);            \

  270.             return -1;                                                        \

  271.         }                                                                     \

  272.     } while (0);

  273. 

  274. #define PARSE_X264_OPT(name, var)\

  275.     if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\

  276.         av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\

  277.         return AVERROR(EINVAL);\

  278.     }

  279. 

  280. static av_cold int X264_init(AVCodecContext *avctx)

  281. {

  282.     X264Context *x4 = avctx->priv_data;

  283. 

  284.     x264_param_default(&x4->params);

  285. 

  286.     x4->params.b_deblocking_filter         = avctx->flags & CODEC_FLAG_LOOP_FILTER;

  287. 

  288.     x4->params.rc.f_ip_factor             = 1 / fabs(avctx->i_quant_factor);

  289.     x4->params.rc.f_pb_factor             = avctx->b_quant_factor;

  290.     x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;

  291.     if (x4->preset || x4->tune)

  292.         if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {

  293.             av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);

  294.             return AVERROR(EINVAL);

  295.         }

  296. 

  297.     if (avctx->level > 0)

  298.         x4->params.i_level_idc = avctx->level;

  299. 

  300.     x4->params.pf_log               = X264_log;

  301.     x4->params.p_log_private        = avctx;

  302.     x4->params.i_log_level          = X264_LOG_DEBUG;

  303. 

  304.     OPT_STR("weightp", x4->wpredp);

  305. 

  306.     if (avctx->bit_rate) {

  307.         x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;

  308.         x4->params.rc.i_rc_method = X264_RC_ABR;

  309.     }

  310.     x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;

  311.     x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;

  312.     x4->params.rc.b_stat_write      = avctx->flags & CODEC_FLAG_PASS1;

  313.     if (avctx->flags & CODEC_FLAG_PASS2) {

  314.         x4->params.rc.b_stat_read = 1;

  315.     } else {

  316. #if FF_API_X264_GLOBAL_OPTS

  317.         if (avctx->crf) {

  318.             x4->params.rc.i_rc_method   = X264_RC_CRF;

  319.             x4->params.rc.f_rf_constant = avctx->crf;

  320.             x4->params.rc.f_rf_constant_max = avctx->crf_max;

  321.         } else if (avctx->cqp > -1) {

  322.             x4->params.rc.i_rc_method   = X264_RC_CQP;

  323.             x4->params.rc.i_qp_constant = avctx->cqp;

  324.         }

  325. #endif

  326. 

  327.         if (x4->crf >= 0) {

  328.             x4->params.rc.i_rc_method   = X264_RC_CRF;

  329.             x4->params.rc.f_rf_constant = x4->crf;

  330.         } else if (x4->cqp >= 0) {

  331.             x4->params.rc.i_rc_method   = X264_RC_CQP;

  332.             x4->params.rc.i_qp_constant = x4->cqp;

  333.         }

  334. 

  335.         if (x4->crf_max >= 0)

  336.             x4->params.rc.f_rf_constant_max = x4->crf_max;

  337.     }

  338. 

  339.     OPT_STR("stats", x4->stats);

  340. 

  341.     if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&

  342.         (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {

  343.         x4->params.rc.f_vbv_buffer_init =

  344.             (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;

  345.     }

  346. 

  347.     OPT_STR("level", x4->level);

  348. 

  349.     if(x4->x264opts){

  350.         const char *p= x4->x264opts;

  351.         while(p){

  352.             char param[256]={0}, val[256]={0};

  353.             sscanf(p, "%255[^:=]=%255[^:]", param, val);

  354.             OPT_STR(param, val);

  355.             p= strchr(p, ':');

  356.             p+=!!p;

  357.         }

  358.     }

  359. 

  360. #if FF_API_X264_GLOBAL_OPTS

  361.     if (avctx->aq_mode >= 0)

  362.         x4->params.rc.i_aq_mode = avctx->aq_mode;

  363.     if (avctx->aq_strength >= 0)

  364.         x4->params.rc.f_aq_strength = avctx->aq_strength;

  365.     if (avctx->psy_rd >= 0)

  366.         x4->params.analyse.f_psy_rd           = avctx->psy_rd;

  367.     if (avctx->psy_trellis >= 0)

  368.         x4->params.analyse.f_psy_trellis      = avctx->psy_trellis;

  369.     if (avctx->rc_lookahead >= 0)

  370.         x4->params.rc.i_lookahead             = avctx->rc_lookahead;

  371.     if (avctx->weighted_p_pred >= 0)

  372.         x4->params.analyse.i_weighted_pred    = avctx->weighted_p_pred;

  373.     if (avctx->bframebias)

  374.         x4->params.i_bframe_bias              = avctx->bframebias;

  375.     if (avctx->deblockalpha)

  376.         x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;

  377.     if (avctx->deblockbeta)

  378.         x4->params.i_deblocking_filter_beta    = avctx->deblockbeta;

  379.     if (avctx->complexityblur >= 0)

  380.         x4->params.rc.f_complexity_blur        = avctx->complexityblur;

  381.     if (avctx->directpred >= 0)

  382.         x4->params.analyse.i_direct_mv_pred    = avctx->directpred;

  383.     if (avctx->partitions) {

  384.         if (avctx->partitions & X264_PART_I4X4)

  385.             x4->params.analyse.inter |= X264_ANALYSE_I4x4;

  386.         if (avctx->partitions & X264_PART_I8X8)

  387.             x4->params.analyse.inter |= X264_ANALYSE_I8x8;

  388.         if (avctx->partitions & X264_PART_P8X8)

  389.             x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;

  390.         if (avctx->partitions & X264_PART_P4X4)

  391.             x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;

  392.         if (avctx->partitions & X264_PART_B8X8)

  393.             x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;

  394.     }

  395.     if (avctx->flags2) {

  396.         x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;

  397.         x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;

  398.         x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;

  399.         x4->params.analyse.b_weighted_bipred  = avctx->flags2 & CODEC_FLAG2_WPRED;

  400.         x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;

  401.         x4->params.analyse.b_transform_8x8    = avctx->flags2 & CODEC_FLAG2_8X8DCT;

  402.         x4->params.analyse.b_fast_pskip       = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;

  403.         x4->params.b_aud                      = avctx->flags2 & CODEC_FLAG2_AUD;

  404.         x4->params.analyse.b_psy              = avctx->flags2 & CODEC_FLAG2_PSY;

  405.         x4->params.rc.b_mb_tree               = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);

  406.     }

  407. #endif

  408. 

  409.     if (avctx->me_method == ME_EPZS)

  410.         x4->params.analyse.i_me_method = X264_ME_DIA;

  411.     else if (avctx->me_method == ME_HEX)

  412.         x4->params.analyse.i_me_method = X264_ME_HEX;

  413.     else if (avctx->me_method == ME_UMH)

  414.         x4->params.analyse.i_me_method = X264_ME_UMH;

  415.     else if (avctx->me_method == ME_FULL)

  416.         x4->params.analyse.i_me_method = X264_ME_ESA;

  417.     else if (avctx->me_method == ME_TESA)

  418.         x4->params.analyse.i_me_method = X264_ME_TESA;

  419. 

  420.     if (avctx->gop_size >= 0)

  421.         x4->params.i_keyint_max         = avctx->gop_size;

  422.     if (avctx->max_b_frames >= 0)

  423.         x4->params.i_bframe             = avctx->max_b_frames;

  424.     if (avctx->scenechange_threshold >= 0)

  425.         x4->params.i_scenecut_threshold = avctx->scenechange_threshold;

  426.     if (avctx->qmin >= 0)

  427.         x4->params.rc.i_qp_min          = avctx->qmin;

  428.     if (avctx->qmax >= 0)

  429.         x4->params.rc.i_qp_max          = avctx->qmax;

  430.     if (avctx->max_qdiff >= 0)

  431.         x4->params.rc.i_qp_step         = avctx->max_qdiff;

  432.     if (avctx->qblur >= 0)

  433.         x4->params.rc.f_qblur           = avctx->qblur;     /* temporally blur quants */

  434.     if (avctx->qcompress >= 0)

  435.         x4->params.rc.f_qcompress       = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */

  436.     if (avctx->refs >= 0)

  437.         x4->params.i_frame_reference    = avctx->refs;

  438.     if (avctx->trellis >= 0)

  439.         x4->params.analyse.i_trellis    = avctx->trellis;

  440.     if (avctx->me_range >= 0)

  441.         x4->params.analyse.i_me_range   = avctx->me_range;

  442.     if (avctx->noise_reduction >= 0)

  443.         x4->params.analyse.i_noise_reduction = avctx->noise_reduction;

  444.     if (avctx->me_subpel_quality >= 0)

  445.         x4->params.analyse.i_subpel_refine   = avctx->me_subpel_quality;

  446.     if (avctx->b_frame_strategy >= 0)

  447.         x4->params.i_bframe_adaptive = avctx->b_frame_strategy;

  448.     if (avctx->keyint_min >= 0)

  449.         x4->params.i_keyint_min = avctx->keyint_min;

  450.     if (avctx->coder_type >= 0)

  451.         x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;

  452.     if (avctx->me_cmp >= 0)

  453.         x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;

  454. 

  455.     if (x4->aq_mode >= 0)

  456.         x4->params.rc.i_aq_mode = x4->aq_mode;

  457.     if (x4->aq_strength >= 0)

  458.         x4->params.rc.f_aq_strength = x4->aq_strength;

  459.     PARSE_X264_OPT("psy-rd", psy_rd);

  460.     PARSE_X264_OPT("deblock", deblock);

  461.     PARSE_X264_OPT("partitions", partitions);

  462.     if (x4->psy >= 0)

  463.         x4->params.analyse.b_psy  = x4->psy;

  464.     if (x4->rc_lookahead >= 0)

  465.         x4->params.rc.i_lookahead = x4->rc_lookahead;

  466.     if (x4->weightp >= 0)

  467.         x4->params.analyse.i_weighted_pred = x4->weightp;

  468.     if (x4->weightb >= 0)

  469.         x4->params.analyse.b_weighted_bipred = x4->weightb;

  470.     if (x4->cplxblur >= 0)

  471.         x4->params.rc.f_complexity_blur = x4->cplxblur;

  472. 

  473.     if (x4->ssim >= 0)

  474.         x4->params.analyse.b_ssim = x4->ssim;

  475.     if (x4->intra_refresh >= 0)

  476.         x4->params.b_intra_refresh = x4->intra_refresh;

  477.     if (x4->b_bias != INT_MIN)

  478.         x4->params.i_bframe_bias              = x4->b_bias;

  479.     if (x4->b_pyramid >= 0)

  480.         x4->params.i_bframe_pyramid = x4->b_pyramid;

  481.     if (x4->mixed_refs >= 0)

  482.         x4->params.analyse.b_mixed_references = x4->mixed_refs;

  483.     if (x4->dct8x8 >= 0)

  484.         x4->params.analyse.b_transform_8x8    = x4->dct8x8;

  485.     if (x4->fast_pskip >= 0)

  486.         x4->params.analyse.b_fast_pskip       = x4->fast_pskip;

  487.     if (x4->aud >= 0)

  488.         x4->params.b_aud                      = x4->aud;

  489.     if (x4->mbtree >= 0)

  490.         x4->params.rc.b_mb_tree               = x4->mbtree;

  491.     if (x4->direct_pred >= 0)

  492.         x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;

  493. 

  494.     if (x4->slice_max_size >= 0)

  495.         x4->params.i_slice_max_size =  x4->slice_max_size;

  496. 

  497.     if (x4->fastfirstpass)

  498.         x264_param_apply_fastfirstpass(&x4->params);

  499. 

  500.     if (x4->profile)

  501.         if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {

  502.             av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);

  503.             return AVERROR(EINVAL);

  504.         }

  505. 

  506.     x4->params.i_width          = avctx->width;

  507.     x4->params.i_height         = avctx->height;

  508.     x4->params.vui.i_sar_width  = avctx->sample_aspect_ratio.num;

  509.     x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;

  510.     x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;

  511.     x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;

  512. 

  513.     x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;

  514. 

  515.     x4->params.i_threads      = avctx->thread_count;

  516. 

  517.     x4->params.b_interlaced   = avctx->flags & CODEC_FLAG_INTERLACED_DCT;

  518. 

  519. //    x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);

  520. 

  521.     x4->params.i_slice_count  = avctx->slices;

  522. 

  523.     x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;

  524. 

  525.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)

  526.         x4->params.b_repeat_headers = 0;

  527. 

  528.     // update AVCodecContext with x264 parameters

  529.     avctx->has_b_frames = x4->params.i_bframe ?

  530.         x4->params.i_bframe_pyramid ? 2 : 1 : 0;

  531.     avctx->bit_rate = x4->params.rc.i_bitrate*1000;

  532. #if FF_API_X264_GLOBAL_OPTS

  533.     avctx->crf = x4->params.rc.f_rf_constant;

  534. #endif

  535. 

  536.     x4->params.i_csp = avfmt2_csp(avctx->pix_fmt);

  537. 

  538.     x4->enc = x264_encoder_open(&x4->params);

  539.     if (!x4->enc)

  540.         return -1;

  541. 

  542.     avctx->coded_frame = &x4->out_pic;

  543. 

  544.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {

  545.         x264_nal_t *nal;

  546.         int nnal, s, i;

  547. 

  548.         s = x264_encoder_headers(x4->enc, &nal, &nnal);

  549. 

  550.         for (i = 0; i < nnal; i++)

  551.             if (nal[i].i_type == NAL_SEI)

  552.                 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);

  553. 

  554.         avctx->extradata      = av_malloc(s);

  555.         avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);

  556.     }

  557. 

  558.     return 0;

  559. }

  560. 

  561. static const enum PixelFormat pix_fmts_8bit[] = {

  562.     PIX_FMT_YUV420P,

  563.     PIX_FMT_YUVJ420P,

  564. #ifdef X264_CSP_I444

  565.     PIX_FMT_YUV444P,

  566. #endif

  567. #ifdef X264_CSP_BGR

  568.     PIX_FMT_BGR24,

  569.     PIX_FMT_RGB24,

  570. #endif

  571.     PIX_FMT_NONE

  572. };

  573. static const enum PixelFormat pix_fmts_9bit[] = {

  574.     PIX_FMT_YUV420P9,

  575.     PIX_FMT_NONE

  576. };

  577. static const enum PixelFormat pix_fmts_10bit[] = {

  578.     PIX_FMT_YUV420P10,

  579.     PIX_FMT_NONE

  580. };

  581. 

  582. static av_cold void X264_init_static(AVCodec *codec)

  583. {

  584.     if (x264_bit_depth == 8)

  585.         codec->pix_fmts = pix_fmts_8bit;

  586.     else if (x264_bit_depth == 9)

  587.         codec->pix_fmts = pix_fmts_9bit;

  588.     else if (x264_bit_depth == 10)

  589.         codec->pix_fmts = pix_fmts_10bit;

  590. }

  591. 

  592. #define OFFSET(x) offsetof(X264Context, x)

  593. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  594. static const AVOption options[] = {

  595.     { "preset",        "Set the encoding preset (cf. x264 --fullhelp)",   OFFSET(preset),        FF_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},

  596.     { "tune",          "Tune the encoding params (cf. x264 --fullhelp)",  OFFSET(tune),          FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},

  597.     { "profile",       "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile),       FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},

  598.     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), FF_OPT_TYPE_INT,    { 1 }, 0, 1, VE},

  599.     {"level", "Specify level (as defined by Annex A)", OFFSET(level), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},

  600.     {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},

  601.     {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},

  602.     {"x264opts", "x264 options", OFFSET(x264opts), FF_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},

  603.     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           FF_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE },

  604.     { "crf_max",       "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), FF_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE },

  605.     { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },

  606.     { "aq-mode",       "AQ method",                                       OFFSET(aq_mode),       FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "aq_mode"},

  607.     { "none",          NULL,                              0, FF_OPT_TYPE_CONST, {X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },

  608.     { "variance",      "Variance AQ (complexity mask)",   0, FF_OPT_TYPE_CONST, {X264_AQ_VARIANCE},     INT_MIN, INT_MAX, VE, "aq_mode" },

  609.     { "autovariance",  "Auto-variance AQ (experimental)", 0, FF_OPT_TYPE_CONST, {X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },

  610.     { "aq-strength",   "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), FF_OPT_TYPE_FLOAT, {-1}, -1, FLT_MAX, VE},

  611.     { "psy",           "Use psychovisual optimizations.",                 OFFSET(psy),           FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE },

  612.     { "psy-rd",        "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), FF_OPT_TYPE_STRING,  {0 }, 0, 0, VE},

  613.     { "rc-lookahead",  "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), FF_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },

  614.     { "weightb",       "Weighted prediction for B-frames.",               OFFSET(weightb),       FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE },

  615.     { "weightp",       "Weighted prediction analysis method.",            OFFSET(weightp),       FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "weightp" },

  616.     { "none",          NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },

  617.     { "simple",        NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },

  618.     { "smart",         NULL, 0, FF_OPT_TYPE_CONST, {X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },

  619.     { "ssim",          "Calculate and print SSIM stats.",                 OFFSET(ssim),          FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE },

  620.     { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE },

  621.     { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        FF_OPT_TYPE_INT,    {INT_MIN}, INT_MIN, INT_MAX, VE },

  622.     { "b-pyramid",     "Keep some B-frames as references.",               OFFSET(b_pyramid),     FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "b_pyramid" },

  623.     { "none",          NULL,                                  0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },

  624.     { "strict",        "Strictly hierarchical pyramid",       0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },

  625.     { "normal",        "Non-strict (not Blu-ray compatible)", 0, FF_OPT_TYPE_CONST, {X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },

  626.     { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), FF_OPT_TYPE_INT, {-1}, -1, 1, VE },

  627.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

  628.     { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

  629.     { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

  630.     { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

  631.     { "deblock",       "Loop filter parameters, in <alpha:beta> form.",   OFFSET(deblock),       FF_OPT_TYPE_STRING, { 0 },  0, 0, VE},

  632.     { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), FF_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE},

  633.     { "partitions",    "A comma-separated list of partitions to consider. "

  634.                        "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), FF_OPT_TYPE_STRING, { 0 }, 0, 0, VE},

  635.     { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "direct-pred" },

  636.     { "none",          NULL,      0,    FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },

  637.     { "spatial",       NULL,      0,    FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },

  638.     { "temporal",      NULL,      0,    FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },

  639.     { "auto",          NULL,      0,    FF_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },

  640.     { "slice-max-size","Constant quantization parameter rate control method",OFFSET(slice_max_size),        FF_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },

  641.     { NULL },

  642. };

  643. 

  644. static const AVClass class = {

  645.     .class_name = "libx264",

  646.     .item_name  = av_default_item_name,

  647.     .option     = options,

  648.     .version    = LIBAVUTIL_VERSION_INT,

  649. };

  650. 

  651. static const AVCodecDefault x264_defaults[] = {

  652.     { "b",                "0" },

  653.     { "bf",               "-1" },

  654.     { "flags2",           "0" },

  655.     { "g",                "-1" },

  656.     { "qmin",             "-1" },

  657.     { "qmax",             "-1" },

  658.     { "qdiff",            "-1" },

  659.     { "qblur",            "-1" },

  660.     { "qcomp",            "-1" },

  661.     { "rc_lookahead",     "-1" },

  662.     { "refs",             "-1" },

  663.     { "sc_threshold",     "-1" },

  664.     { "trellis",          "-1" },

  665.     { "nr",               "-1" },

  666.     { "me_range",         "-1" },

  667.     { "me_method",        "-1" },

  668.     { "subq",             "-1" },

  669.     { "b_strategy",       "-1" },

  670.     { "keyint_min",       "-1" },

  671.     { "coder",            "-1" },

  672.     { "cmp",              "-1" },

  673.     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },

  674.     { NULL },

  675. };

  676. 

  677. AVCodec ff_libx264_encoder = {

  678.     .name           = "libx264",

  679.     .type           = AVMEDIA_TYPE_VIDEO,

  680.     .id             = CODEC_ID_H264,

  681.     .priv_data_size = sizeof(X264Context),

  682.     .init           = X264_init,

  683.     .encode         = X264_frame,

  684.     .close          = X264_close,

  685.     .capabilities   = CODEC_CAP_DELAY,

  686.     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),

  687.     .priv_class     = &class,

  688.     .defaults       = x264_defaults,

  689.     .init_static_data = X264_init_static,

  690. };