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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 "avcodec.h"

  24. #include "internal.h"

  25. #include <x264.h>

  26. #include <float.h>

  27. #include <math.h>

  28. #include <stdio.h>

  29. #include <stdlib.h>

  30. #include <string.h>

  31. 

  32. typedef struct X264Context {

  33.     AVClass        *class;

  34.     x264_param_t    params;

  35.     x264_t         *enc;

  36.     x264_picture_t  pic;

  37.     uint8_t        *sei;

  38.     int             sei_size;

  39.     AVFrame         out_pic;

  40.     char *preset;

  41.     char *tune;

  42.     char *profile;

  43.     char *level;

  44.     int fastfirstpass;

  45.     char *stats;

  46.     char *wpredp;

  47.     char *x264opts;

  48.     float crf;

  49.     float crf_max;

  50.     int cqp;

  51.     int aq_mode;

  52.     float aq_strength;

  53.     char *psy_rd;

  54.     int psy;

  55.     int rc_lookahead;

  56.     int weightp;

  57.     int weightb;

  58.     int ssim;

  59.     int intra_refresh;

  60.     int b_bias;

  61.     int b_pyramid;

  62.     int mixed_refs;

  63.     int dct8x8;

  64.     int fast_pskip;

  65.     int aud;

  66.     int mbtree;

  67.     char *deblock;

  68.     float cplxblur;

  69.     char *partitions;

  70.     int direct_pred;

  71. } X264Context;

  72. 

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

  74. {

  75.     static const int level_map[] = {

  76.         [X264_LOG_ERROR]   = AV_LOG_ERROR,

  77.         [X264_LOG_WARNING] = AV_LOG_WARNING,

  78.         [X264_LOG_INFO]    = AV_LOG_INFO,

  79.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG

  80.     };

  81. 

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

  83.         return;

  84. 

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

  86. }

  87. 

  88. 

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

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

  91. {

  92.     X264Context *x4 = ctx->priv_data;

  93.     uint8_t *p = buf;

  94.     int i;

  95. 

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

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

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

  99.         p += x4->sei_size;

  100.         x4->sei_size = 0;

  101.     }

  102. 

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

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

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

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

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

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

  109.             continue;

  110.         }

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

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

  113.     }

  114. 

  115.     return p - buf;

  116. }

  117. 

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

  119.                       int bufsize, void *data)

  120. {

  121.     X264Context *x4 = ctx->priv_data;

  122.     AVFrame *frame = data;

  123.     x264_nal_t *nal;

  124.     int nnal, i;

  125.     x264_picture_t pic_out;

  126. 

  127.     x264_picture_init( &x4->pic );

  128.     x4->pic.img.i_csp   = X264_CSP_I420;

  129.     x4->pic.img.i_plane = 3;

  130. 

  131.     if (frame) {

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

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

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

  135.         }

  136. 

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

  138.         x4->pic.i_type =

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

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

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

  142.                                             X264_TYPE_AUTO;

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

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

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

  146.         }

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

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

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

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

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

  152.         }

  153.     }

  154. 

  155.     do {

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

  157.         return -1;

  158. 

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

  160.     if (bufsize < 0)

  161.         return -1;

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

  163. 

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

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

  166. 

  167.     switch (pic_out.i_type) {

  168.     case X264_TYPE_IDR:

  169.     case X264_TYPE_I:

  170.         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;

  171.         break;

  172.     case X264_TYPE_P:

  173.         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;

  174.         break;

  175.     case X264_TYPE_B:

  176.     case X264_TYPE_BREF:

  177.         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;

  178.         break;

  179.     }

  180. 

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

  182.     if (bufsize)

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

  184. 

  185.     return bufsize;

  186. }

  187. 

  188. static av_cold int X264_close(AVCodecContext *avctx)

  189. {

  190.     X264Context *x4 = avctx->priv_data;

  191. 

  192.     av_freep(&avctx->extradata);

  193.     av_free(x4->sei);

  194. 

  195.     if (x4->enc)

  196.         x264_encoder_close(x4->enc);

  197. 

  198.     return 0;

  199. }

  200. 

  201. /**

  202.  * Detect default settings and use default profile to avoid libx264 failure.

  203.  */

  204. static void check_default_settings(AVCodecContext *avctx)

  205. {

  206.     X264Context *x4 = avctx->priv_data;

  207. 

  208.     int score = 0;

  209.     score += x4->params.analyse.i_me_range == 0;

  210.     score += x4->params.rc.i_qp_step == 3;

  211.     score += x4->params.i_keyint_max == 12;

  212.     score += x4->params.rc.i_qp_min == 2;

  213.     score += x4->params.rc.i_qp_max == 31;

  214.     score += x4->params.rc.f_qcompress == 0.5;

  215.     score += fabs(x4->params.rc.f_ip_factor - 1.25) < 0.01;

  216.     score += fabs(x4->params.rc.f_pb_factor - 1.25) < 0.01;

  217.     score += x4->params.analyse.inter == 0 && x4->params.analyse.i_subpel_refine == 8;

  218.     if (score >= 5) {

  219.         av_log(avctx, AV_LOG_ERROR, "Default settings detected, using medium profile\n");

  220.         x4->preset = av_strdup("medium");

  221.         if (avctx->bit_rate == 200*1000)

  222.             avctx->crf = 23;

  223.     }

  224. }

  225. 

  226. #define OPT_STR(opt, param)                                                   \

  227.     do {                                                                      \

  228.         int ret;                                                              \

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

  230.             if(ret == X264_PARAM_BAD_NAME)                                    \

  231.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  233.             else                                                              \

  234.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  236.             return -1;                                                        \

  237.         }                                                                     \

  238.     } while (0);

  239. 

  240. #define PARSE_X264_OPT(name, var)\

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

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

  243.         return AVERROR(EINVAL);\

  244.     }

  245. 

  246. static av_cold int X264_init(AVCodecContext *avctx)

  247. {

  248.     X264Context *x4 = avctx->priv_data;

  249. 

  250.     x264_param_default(&x4->params);

  251. 

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

  253. 

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

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

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

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

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

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

  260.             return AVERROR(EINVAL);

  261.         }

  262. 

  263.     if (avctx->level > 0)

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

  265. 

  266.     x4->params.pf_log               = X264_log;

  267.     x4->params.p_log_private        = avctx;

  268.     x4->params.i_log_level          = X264_LOG_DEBUG;

  269. 

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

  271. 

  272.     if (avctx->bit_rate) {

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

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

  275.     }

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

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

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

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

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

  281.     } else {

  282. #if FF_API_X264_GLOBAL_OPTS

  283.         if (avctx->crf) {

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

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

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

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

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

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

  290.         }

  291. #endif

  292. 

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

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

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

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

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

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

  299.         }

  300. 

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

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

  303.     }

  304. 

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

  306. 

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

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

  309.         x4->params.rc.f_vbv_buffer_init =

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

  311.     }

  312. 

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

  314. 

  315.     if(x4->x264opts){

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

  317.         while(p){

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

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

  320.             OPT_STR(param, val);

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

  322.             p+=!!p;

  323.         }

  324.     }

  325. 

  326. #if FF_API_X264_GLOBAL_OPTS

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

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

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

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

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

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

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

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

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

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

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

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

  339.     if (avctx->bframebias)

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

  341.     if (avctx->deblockalpha)

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

  343.     if (avctx->deblockbeta)

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

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

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

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

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

  349.     if (avctx->partitions) {

  350.         if (avctx->partitions & X264_PART_I4X4)

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

  352.         if (avctx->partitions & X264_PART_I8X8)

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

  354.         if (avctx->partitions & X264_PART_P8X8)

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

  356.         if (avctx->partitions & X264_PART_P4X4)

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

  358.         if (avctx->partitions & X264_PART_B8X8)

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

  360.     }

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

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

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

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

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

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

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

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

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

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

  371. #endif

  372. 

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

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

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

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

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

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

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

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

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

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

  383. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  418. 

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

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

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

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

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

  424.     PARSE_X264_OPT("deblock", deblock);

  425.     PARSE_X264_OPT("partitions", partitions);

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

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

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

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

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

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

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

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

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

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

  436. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  457. 

  458.     if (x4->fastfirstpass)

  459.         x264_param_apply_fastfirstpass(&x4->params);

  460. 

  461.     if (x4->profile)

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

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

  464.             return AVERROR(EINVAL);

  465.         }

  466. 

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

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

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

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

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

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

  473. 

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

  475. 

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

  477. 

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

  479. 

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

  481. 

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

  483. 

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

  485. 

  486.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)

  487.         x4->params.b_repeat_headers = 0;

  488. 

  489.     // update AVCodecContext with x264 parameters

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

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

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

  493. #if FF_API_X264_GLOBAL_OPTS

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

  495. #endif

  496. 

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

  498.     if (!x4->enc)

  499.         return -1;

  500. 

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

  502. 

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

  504.         x264_nal_t *nal;

  505.         int nnal, s, i;

  506. 

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

  508. 

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

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

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

  512. 

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

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

  515.     }

  516. 

  517.     return 0;

  518. }

  519. 

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

  521. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  522. static const AVOption options[] = {

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

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

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

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

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

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

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

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

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

  532.     { "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 },

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

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

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

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

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

  538.     { "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},

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  555.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        FF_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

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

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

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

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

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

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

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

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

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

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

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

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

  568.     { NULL },

  569. };

  570. 

  571. static const AVClass class = {

  572.     .class_name = "libx264",

  573.     .item_name  = av_default_item_name,

  574.     .option     = options,

  575.     .version    = LIBAVUTIL_VERSION_INT,

  576. };

  577. 

  578. static const AVCodecDefault x264_defaults[] = {

  579.     { "b",                "0" },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  599.     { NULL },

  600. };

  601. 

  602. AVCodec ff_libx264_encoder = {

  603.     .name           = "libx264",

  604.     .type           = AVMEDIA_TYPE_VIDEO,

  605.     .id             = CODEC_ID_H264,

  606.     .priv_data_size = sizeof(X264Context),

  607.     .init           = X264_init,

  608.     .encode         = X264_frame,

  609.     .close          = X264_close,

  610.     .capabilities   = CODEC_CAP_DELAY,

  611.     .pix_fmts       = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_YUVJ420P, PIX_FMT_NONE },

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

  613.     .priv_class     = &class,

  614.     .defaults       = x264_defaults,

  615. };