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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/internal.h"
  23. #include "libavutil/opt.h"
  24. #include "libavutil/mem.h"
  25. #include "libavutil/pixdesc.h"
  26. #include "avcodec.h"
  27. #include "internal.h"
  28.  
  29. #if defined(_MSC_VER)
  30. #define X264_API_IMPORTS 1
  31. #endif
  32.  
  33. #include <x264.h>
  34. #include <float.h>
  35. #include <math.h>
  36. #include <stdio.h>
  37. #include <stdlib.h>
  38. #include <string.h>
  39.  
  40. typedef struct X264Context {
  41.     AVClass        *class;
  42.     x264_param_t    params;
  43.     x264_t         *enc;
  44.     x264_picture_t  pic;
  45.     uint8_t        *sei;
  46.     int             sei_size;
  47.     AVFrame         out_pic;
  48.     char *preset;
  49.     char *tune;
  50.     char *profile;
  51.     char *level;
  52.     int fastfirstpass;
  53.     char *wpredp;
  54.     char *x264opts;
  55.     float crf;
  56.     float crf_max;
  57.     int cqp;
  58.     int aq_mode;
  59.     float aq_strength;
  60.     char *psy_rd;
  61.     int psy;
  62.     int rc_lookahead;
  63.     int weightp;
  64.     int weightb;
  65.     int ssim;
  66.     int intra_refresh;
  67.     int bluray_compat;
  68.     int b_bias;
  69.     int b_pyramid;
  70.     int mixed_refs;
  71.     int dct8x8;
  72.     int fast_pskip;
  73.     int aud;
  74.     int mbtree;
  75.     char *deblock;
  76.     float cplxblur;
  77.     char *partitions;
  78.     int direct_pred;
  79.     int slice_max_size;
  80.     char *stats;
  81.     int nal_hrd;
  82.     char *x264_params;
  83. } X264Context;
  84.  
  85. static void X264_log(void *p, int level, const char *fmt, va_list args)
  86. {
  87.     static const int level_map[] = {
  88.         [X264_LOG_ERROR]   = AV_LOG_ERROR,
  89.         [X264_LOG_WARNING] = AV_LOG_WARNING,
  90.         [X264_LOG_INFO]    = AV_LOG_INFO,
  91.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG
  92.     };
  93.  
  94.     if (level < 0 || level > X264_LOG_DEBUG)
  95.         return;
  96.  
  97.     av_vlog(p, level_map[level], fmt, args);
  98. }
  99.  
  100.  
  101. static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
  102.                        x264_nal_t *nals, int nnal)
  103. {
  104.     X264Context *x4 = ctx->priv_data;
  105.     uint8_t *p;
  106.     int i, size = x4->sei_size, ret;
  107.  
  108.     if (!nnal)
  109.         return 0;
  110.  
  111.     for (i = 0; i < nnal; i++)
  112.         size += nals[i].i_payload;
  113.  
  114.     if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
  115.         return ret;
  116.  
  117.     p = pkt->data;
  118.  
  119.     /* Write the SEI as part of the first frame. */
  120.     if (x4->sei_size > 0 && nnal > 0) {
  121.         if (x4->sei_size > size) {
  122.             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
  123.             return -1;
  124.         }
  125.         memcpy(p, x4->sei, x4->sei_size);
  126.         p += x4->sei_size;
  127.         x4->sei_size = 0;
  128.         av_freep(&x4->sei);
  129.     }
  130.  
  131.     for (i = 0; i < nnal; i++){
  132.         memcpy(p, nals[i].p_payload, nals[i].i_payload);
  133.         p += nals[i].i_payload;
  134.     }
  135.  
  136.     return 1;
  137. }
  138.  
  139. static int avfmt2_num_planes(int avfmt)
  140. {
  141.     switch (avfmt) {
  142.     case AV_PIX_FMT_YUV420P:
  143.     case AV_PIX_FMT_YUVJ420P:
  144.     case AV_PIX_FMT_YUV420P9:
  145.     case AV_PIX_FMT_YUV420P10:
  146.     case AV_PIX_FMT_YUV444P:
  147.         return 3;
  148.  
  149.     case AV_PIX_FMT_BGR24:
  150.     case AV_PIX_FMT_RGB24:
  151.         return 1;
  152.  
  153.     default:
  154.         return 3;
  155.     }
  156. }
  157.  
  158. static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
  159.                       int *got_packet)
  160. {
  161.     X264Context *x4 = ctx->priv_data;
  162.     x264_nal_t *nal;
  163.     int nnal, i, ret;
  164.     x264_picture_t pic_out = {0};
  165.  
  166.     x264_picture_init( &x4->pic );
  167.     x4->pic.img.i_csp   = x4->params.i_csp;
  168.     if (x264_bit_depth > 8)
  169.         x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
  170.     x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
  171.  
  172.     if (frame) {
  173.         for (i = 0; i < x4->pic.img.i_plane; i++) {
  174.             x4->pic.img.plane[i]    = frame->data[i];
  175.             x4->pic.img.i_stride[i] = frame->linesize[i];
  176.         }
  177.  
  178.         x4->pic.i_pts  = frame->pts;
  179.         x4->pic.i_type =
  180.             frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
  181.             frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
  182.             frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
  183.                                             X264_TYPE_AUTO;
  184.         if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
  185.             x4->params.b_tff = frame->top_field_first;
  186.             x264_encoder_reconfig(x4->enc, &x4->params);
  187.         }
  188.         if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
  189.             x4->params.vui.i_sar_width  != ctx->sample_aspect_ratio.num) {
  190.             x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
  191.             x4->params.vui.i_sar_width  = ctx->sample_aspect_ratio.num;
  192.             x264_encoder_reconfig(x4->enc, &x4->params);
  193.         }
  194.     }
  195.  
  196.     do {
  197.         if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
  198.             return -1;
  199.  
  200.         ret = encode_nals(ctx, pkt, nal, nnal);
  201.         if (ret < 0)
  202.             return -1;
  203.     } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
  204.  
  205.     pkt->pts = pic_out.i_pts;
  206.     pkt->dts = pic_out.i_dts;
  207.  
  208.     switch (pic_out.i_type) {
  209.     case X264_TYPE_IDR:
  210.     case X264_TYPE_I:
  211.         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
  212.         break;
  213.     case X264_TYPE_P:
  214.         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
  215.         break;
  216.     case X264_TYPE_B:
  217.     case X264_TYPE_BREF:
  218.         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
  219.         break;
  220.     }
  221.  
  222.     pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
  223.     if (ret)
  224.         x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
  225.  
  226.     *got_packet = ret;
  227.     return 0;
  228. }
  229.  
  230. static av_cold int X264_close(AVCodecContext *avctx)
  231. {
  232.     X264Context *x4 = avctx->priv_data;
  233.  
  234.     av_freep(&avctx->extradata);
  235.     av_free(x4->sei);
  236.  
  237.     if (x4->enc)
  238.         x264_encoder_close(x4->enc);
  239.  
  240.     return 0;
  241. }
  242.  
  243. #define OPT_STR(opt, param)                                                   \
  244.     do {                                                                      \
  245.         int ret;                                                              \
  246.         if (param!=NULL && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
  247.             if(ret == X264_PARAM_BAD_NAME)                                    \
  248.                 av_log(avctx, AV_LOG_ERROR,                                   \
  249.                         "bad option '%s': '%s'\n", opt, param);               \
  250.             else                                                              \
  251.                 av_log(avctx, AV_LOG_ERROR,                                   \
  252.                         "bad value for '%s': '%s'\n", opt, param);            \
  253.             return -1;                                                        \
  254.         }                                                                     \
  255.     } while (0)
  256.  
  257. static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
  258. {
  259.     switch (pix_fmt) {
  260.     case AV_PIX_FMT_YUV420P:
  261.     case AV_PIX_FMT_YUVJ420P:
  262.     case AV_PIX_FMT_YUV420P9:
  263.     case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
  264.     case AV_PIX_FMT_YUV422P:
  265.     case AV_PIX_FMT_YUVJ422P:
  266.     case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
  267.     case AV_PIX_FMT_YUV444P:
  268.     case AV_PIX_FMT_YUVJ444P:
  269.     case AV_PIX_FMT_YUV444P9:
  270.     case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
  271. #ifdef X264_CSP_BGR
  272.     case AV_PIX_FMT_BGR24:
  273.         return X264_CSP_BGR;
  274.  
  275.     case AV_PIX_FMT_RGB24:
  276.         return X264_CSP_RGB;
  277. #endif
  278.     case AV_PIX_FMT_NV12:      return X264_CSP_NV12;
  279.     case AV_PIX_FMT_NV16:
  280.     case AV_PIX_FMT_NV20:      return X264_CSP_NV16;
  281.     };
  282.     return 0;
  283. }
  284.  
  285. #define PARSE_X264_OPT(name, var)\
  286.     if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
  287.         av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
  288.         return AVERROR(EINVAL);\
  289.     }
  290.  
  291. static av_cold int X264_init(AVCodecContext *avctx)
  292. {
  293.     X264Context *x4 = avctx->priv_data;
  294.     int sw,sh;
  295.  
  296.     x264_param_default(&x4->params);
  297.  
  298.     x4->params.b_deblocking_filter         = avctx->flags & CODEC_FLAG_LOOP_FILTER;
  299.  
  300.     x4->params.rc.f_pb_factor             = avctx->b_quant_factor;
  301.     x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
  302.     if (x4->preset || x4->tune)
  303.         if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
  304.             int i;
  305.             av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
  306.             av_log(avctx, AV_LOG_INFO, "Possible presets:");
  307.             for (i = 0; x264_preset_names[i]; i++)
  308.                 av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
  309.             av_log(avctx, AV_LOG_INFO, "\n");
  310.             av_log(avctx, AV_LOG_INFO, "Possible tunes:");
  311.             for (i = 0; x264_tune_names[i]; i++)
  312.                 av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
  313.             av_log(avctx, AV_LOG_INFO, "\n");
  314.             return AVERROR(EINVAL);
  315.         }
  316.  
  317.     if (avctx->level > 0)
  318.         x4->params.i_level_idc = avctx->level;
  319.  
  320.     x4->params.pf_log               = X264_log;
  321.     x4->params.p_log_private        = avctx;
  322.     x4->params.i_log_level          = X264_LOG_DEBUG;
  323.     x4->params.i_csp                = convert_pix_fmt(avctx->pix_fmt);
  324.  
  325.     OPT_STR("weightp", x4->wpredp);
  326.  
  327.     if (avctx->bit_rate) {
  328.         x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;
  329.         x4->params.rc.i_rc_method = X264_RC_ABR;
  330.     }
  331.     x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
  332.     x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;
  333.     x4->params.rc.b_stat_write      = avctx->flags & CODEC_FLAG_PASS1;
  334.     if (avctx->flags & CODEC_FLAG_PASS2) {
  335.         x4->params.rc.b_stat_read = 1;
  336.     } else {
  337.         if (x4->crf >= 0) {
  338.             x4->params.rc.i_rc_method   = X264_RC_CRF;
  339.             x4->params.rc.f_rf_constant = x4->crf;
  340.         } else if (x4->cqp >= 0) {
  341.             x4->params.rc.i_rc_method   = X264_RC_CQP;
  342.             x4->params.rc.i_qp_constant = x4->cqp;
  343.         }
  344.  
  345.         if (x4->crf_max >= 0)
  346.             x4->params.rc.f_rf_constant_max = x4->crf_max;
  347.     }
  348.  
  349.     if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
  350.         (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
  351.         x4->params.rc.f_vbv_buffer_init =
  352.             (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
  353.     }
  354.  
  355.     OPT_STR("level", x4->level);
  356.  
  357.     if(x4->x264opts){
  358.         const char *p= x4->x264opts;
  359.         while(p){
  360.             char param[256]={0}, val[256]={0};
  361.             if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
  362.                 OPT_STR(param, "1");
  363.             }else
  364.                 OPT_STR(param, val);
  365.             p= strchr(p, ':');
  366.             p+=!!p;
  367.         }
  368.     }
  369.  
  370.     if (avctx->i_quant_factor > 0)
  371.         x4->params.rc.f_ip_factor         = 1 / fabs(avctx->i_quant_factor);
  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.     PARSE_X264_OPT("stats", stats);
  427.     if (x4->psy >= 0)
  428.         x4->params.analyse.b_psy  = x4->psy;
  429.     if (x4->rc_lookahead >= 0)
  430.         x4->params.rc.i_lookahead = x4->rc_lookahead;
  431.     if (x4->weightp >= 0)
  432.         x4->params.analyse.i_weighted_pred = x4->weightp;
  433.     if (x4->weightb >= 0)
  434.         x4->params.analyse.b_weighted_bipred = x4->weightb;
  435.     if (x4->cplxblur >= 0)
  436.         x4->params.rc.f_complexity_blur = x4->cplxblur;
  437.  
  438.     if (x4->ssim >= 0)
  439.         x4->params.analyse.b_ssim = x4->ssim;
  440.     if (x4->intra_refresh >= 0)
  441.         x4->params.b_intra_refresh = x4->intra_refresh;
  442.     if (x4->bluray_compat >= 0) {
  443.         x4->params.b_bluray_compat = x4->bluray_compat;
  444.         x4->params.b_vfr_input = 0;
  445.     }
  446.     if (x4->b_bias != INT_MIN)
  447.         x4->params.i_bframe_bias              = x4->b_bias;
  448.     if (x4->b_pyramid >= 0)
  449.         x4->params.i_bframe_pyramid = x4->b_pyramid;
  450.     if (x4->mixed_refs >= 0)
  451.         x4->params.analyse.b_mixed_references = x4->mixed_refs;
  452.     if (x4->dct8x8 >= 0)
  453.         x4->params.analyse.b_transform_8x8    = x4->dct8x8;
  454.     if (x4->fast_pskip >= 0)
  455.         x4->params.analyse.b_fast_pskip       = x4->fast_pskip;
  456.     if (x4->aud >= 0)
  457.         x4->params.b_aud                      = x4->aud;
  458.     if (x4->mbtree >= 0)
  459.         x4->params.rc.b_mb_tree               = x4->mbtree;
  460.     if (x4->direct_pred >= 0)
  461.         x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;
  462.  
  463.     if (x4->slice_max_size >= 0)
  464.         x4->params.i_slice_max_size =  x4->slice_max_size;
  465.     else {
  466.         /*
  467.          * Allow x264 to be instructed through AVCodecContext about the maximum
  468.          * size of the RTP payload. For example, this enables the production of
  469.          * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
  470.          * NAL unit per RTP packet.
  471.          */
  472.         if (avctx->rtp_payload_size)
  473.             x4->params.i_slice_max_size = avctx->rtp_payload_size;
  474.     }
  475.  
  476.     if (x4->fastfirstpass)
  477.         x264_param_apply_fastfirstpass(&x4->params);
  478.  
  479.     /* Allow specifying the x264 profile through AVCodecContext. */
  480.     if (!x4->profile)
  481.         switch (avctx->profile) {
  482.         case FF_PROFILE_H264_BASELINE:
  483.             x4->profile = av_strdup("baseline");
  484.             break;
  485.         case FF_PROFILE_H264_HIGH:
  486.             x4->profile = av_strdup("high");
  487.             break;
  488.         case FF_PROFILE_H264_HIGH_10:
  489.             x4->profile = av_strdup("high10");
  490.             break;
  491.         case FF_PROFILE_H264_HIGH_422:
  492.             x4->profile = av_strdup("high422");
  493.             break;
  494.         case FF_PROFILE_H264_HIGH_444:
  495.             x4->profile = av_strdup("high444");
  496.             break;
  497.         case FF_PROFILE_H264_MAIN:
  498.             x4->profile = av_strdup("main");
  499.             break;
  500.         default:
  501.             break;
  502.         }
  503.  
  504.     if (x4->nal_hrd >= 0)
  505.         x4->params.i_nal_hrd = x4->nal_hrd;
  506.  
  507.     if (x4->profile)
  508.         if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
  509.             int i;
  510.             av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
  511.             av_log(avctx, AV_LOG_INFO, "Possible profiles:");
  512.             for (i = 0; x264_profile_names[i]; i++)
  513.                 av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
  514.             av_log(avctx, AV_LOG_INFO, "\n");
  515.             return AVERROR(EINVAL);
  516.         }
  517.  
  518.     x4->params.i_width          = avctx->width;
  519.     x4->params.i_height         = avctx->height;
  520.     av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
  521.     x4->params.vui.i_sar_width  = sw;
  522.     x4->params.vui.i_sar_height = sh;
  523.     x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
  524.     x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
  525.  
  526.     x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
  527.  
  528.     x4->params.i_threads      = avctx->thread_count;
  529.     if (avctx->thread_type)
  530.         x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
  531.  
  532.     x4->params.b_interlaced   = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
  533.  
  534.     x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
  535.  
  536.     x4->params.i_slice_count  = avctx->slices;
  537.  
  538.     x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
  539.                                  avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
  540.                                  avctx->pix_fmt == AV_PIX_FMT_YUVJ444P;
  541.  
  542.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
  543.         x4->params.b_repeat_headers = 0;
  544.  
  545.     if (x4->x264_params) {
  546.         AVDictionary *dict    = NULL;
  547.         AVDictionaryEntry *en = NULL;
  548.  
  549.         if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
  550.             while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
  551.                 if (x264_param_parse(&x4->params, en->key, en->value) < 0)
  552.                     av_log(avctx, AV_LOG_WARNING,
  553.                            "Error parsing option '%s = %s'.\n",
  554.                             en->key, en->value);
  555.             }
  556.  
  557.             av_dict_free(&dict);
  558.         }
  559.     }
  560.  
  561.     // update AVCodecContext with x264 parameters
  562.     avctx->has_b_frames = x4->params.i_bframe ?
  563.         x4->params.i_bframe_pyramid ? 2 : 1 : 0;
  564.     if (avctx->max_b_frames < 0)
  565.         avctx->max_b_frames = 0;
  566.  
  567.     avctx->bit_rate = x4->params.rc.i_bitrate*1000;
  568.  
  569.     x4->enc = x264_encoder_open(&x4->params);
  570.     if (!x4->enc)
  571.         return -1;
  572.  
  573.     avctx->coded_frame = &x4->out_pic;
  574.  
  575.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
  576.         x264_nal_t *nal;
  577.         uint8_t *p;
  578.         int nnal, s, i;
  579.  
  580.         s = x264_encoder_headers(x4->enc, &nal, &nnal);
  581.         avctx->extradata = p = av_malloc(s);
  582.  
  583.         for (i = 0; i < nnal; i++) {
  584.             /* Don't put the SEI in extradata. */
  585.             if (nal[i].i_type == NAL_SEI) {
  586.                 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
  587.                 x4->sei_size = nal[i].i_payload;
  588.                 x4->sei      = av_malloc(x4->sei_size);
  589.                 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
  590.                 continue;
  591.             }
  592.             memcpy(p, nal[i].p_payload, nal[i].i_payload);
  593.             p += nal[i].i_payload;
  594.         }
  595.         avctx->extradata_size = p - avctx->extradata;
  596.     }
  597.  
  598.     return 0;
  599. }
  600.  
  601. static const enum AVPixelFormat pix_fmts_8bit[] = {
  602.     AV_PIX_FMT_YUV420P,
  603.     AV_PIX_FMT_YUVJ420P,
  604.     AV_PIX_FMT_YUV422P,
  605.     AV_PIX_FMT_YUVJ422P,
  606.     AV_PIX_FMT_YUV444P,
  607.     AV_PIX_FMT_YUVJ444P,
  608.     AV_PIX_FMT_NV12,
  609.     AV_PIX_FMT_NV16,
  610.     AV_PIX_FMT_NONE
  611. };
  612. static const enum AVPixelFormat pix_fmts_9bit[] = {
  613.     AV_PIX_FMT_YUV420P9,
  614.     AV_PIX_FMT_YUV444P9,
  615.     AV_PIX_FMT_NONE
  616. };
  617. static const enum AVPixelFormat pix_fmts_10bit[] = {
  618.     AV_PIX_FMT_YUV420P10,
  619.     AV_PIX_FMT_YUV422P10,
  620.     AV_PIX_FMT_YUV444P10,
  621.     AV_PIX_FMT_NV20,
  622.     AV_PIX_FMT_NONE
  623. };
  624. static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
  625. #ifdef X264_CSP_BGR
  626.     AV_PIX_FMT_BGR24,
  627.     AV_PIX_FMT_RGB24,
  628. #endif
  629.     AV_PIX_FMT_NONE
  630. };
  631.  
  632. static av_cold void X264_init_static(AVCodec *codec)
  633. {
  634.     if (x264_bit_depth == 8)
  635.         codec->pix_fmts = pix_fmts_8bit;
  636.     else if (x264_bit_depth == 9)
  637.         codec->pix_fmts = pix_fmts_9bit;
  638.     else if (x264_bit_depth == 10)
  639.         codec->pix_fmts = pix_fmts_10bit;
  640. }
  641.  
  642. #define OFFSET(x) offsetof(X264Context, x)
  643. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
  644. static const AVOption options[] = {
  645.     { "preset",        "Set the encoding preset (cf. x264 --fullhelp)",   OFFSET(preset),        AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
  646.     { "tune",          "Tune the encoding params (cf. x264 --fullhelp)",  OFFSET(tune),          AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
  647.     { "profile",       "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile),       AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
  648.     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), AV_OPT_TYPE_INT,    { .i64 = 1 }, 0, 1, VE},
  649.     {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
  650.     {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
  651.     {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
  652.     {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
  653.     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE },
  654.     { "crf_max",       "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
  655.     { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE },
  656.     { "aq-mode",       "AQ method",                                       OFFSET(aq_mode),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
  657.     { "none",          NULL,                              0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },
  658.     { "variance",      "Variance AQ (complexity mask)",   0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE},     INT_MIN, INT_MAX, VE, "aq_mode" },
  659.     { "autovariance",  "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
  660.     { "aq-strength",   "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT, {.dbl = -1}, -1, FLT_MAX, VE},
  661.     { "psy",           "Use psychovisual optimizations.",                 OFFSET(psy),           AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },
  662.     { "psy-rd",        "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING,  {0 }, 0, 0, VE},
  663.     { "rc-lookahead",  "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
  664.     { "weightb",       "Weighted prediction for B-frames.",               OFFSET(weightb),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },
  665.     { "weightp",       "Weighted prediction analysis method.",            OFFSET(weightp),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
  666.     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },
  667.     { "simple",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
  668.     { "smart",         NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },
  669.     { "ssim",          "Calculate and print SSIM stats.",                 OFFSET(ssim),          AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },
  670.     { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },
  671.     { "bluray-compat", "Bluray compatibility workarounds.",               OFFSET(bluray_compat) ,AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },
  672.     { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
  673.     { "b-pyramid",     "Keep some B-frames as references.",               OFFSET(b_pyramid),     AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
  674.     { "none",          NULL,                                  0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },
  675.     { "strict",        "Strictly hierarchical pyramid",       0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
  676.     { "normal",        "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
  677.     { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, VE },
  678.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},
  679.     { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},
  680.     { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},
  681.     { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},
  682.     { "deblock",       "Loop filter parameters, in <alpha:beta> form.",   OFFSET(deblock),       AV_OPT_TYPE_STRING, { 0 },  0, 0, VE},
  683.     { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE},
  684.     { "partitions",    "A comma-separated list of partitions to consider. "
  685.                        "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
  686.     { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
  687.     { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },
  688.     { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },
  689.     { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
  690.     { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },
  691.     { "slice-max-size","Limit the size of each slice in bytes",           OFFSET(slice_max_size),AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE },
  692.     { "stats",         "Filename for 2 pass stats",                       OFFSET(stats),         AV_OPT_TYPE_STRING, { 0 },  0,       0, VE },
  693.     { "nal-hrd",       "Signal HRD information (requires vbv-bufsize; "
  694.                        "cbr not allowed in .mp4)",                        OFFSET(nal_hrd),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
  695.     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
  696.     { "vbr",           NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR},  INT_MIN, INT_MAX, VE, "nal-hrd" },
  697.     { "cbr",           NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR},  INT_MIN, INT_MAX, VE, "nal-hrd" },
  698.     { "x264-params",  "Override the x264 configuration using a :-separated list of key=value parameters", OFFSET(x264_params), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
  699.     { NULL },
  700. };
  701.  
  702. static const AVClass x264_class = {
  703.     .class_name = "libx264",
  704.     .item_name  = av_default_item_name,
  705.     .option     = options,
  706.     .version    = LIBAVUTIL_VERSION_INT,
  707. };
  708.  
  709. static const AVClass rgbclass = {
  710.     .class_name = "libx264rgb",
  711.     .item_name  = av_default_item_name,
  712.     .option     = options,
  713.     .version    = LIBAVUTIL_VERSION_INT,
  714. };
  715.  
  716. static const AVCodecDefault x264_defaults[] = {
  717.     { "b",                "0" },
  718.     { "bf",               "-1" },
  719.     { "flags2",           "0" },
  720.     { "g",                "-1" },
  721.     { "i_qfactor",        "-1" },
  722.     { "qmin",             "-1" },
  723.     { "qmax",             "-1" },
  724.     { "qdiff",            "-1" },
  725.     { "qblur",            "-1" },
  726.     { "qcomp",            "-1" },
  727. //     { "rc_lookahead",     "-1" },
  728.     { "refs",             "-1" },
  729.     { "sc_threshold",     "-1" },
  730.     { "trellis",          "-1" },
  731.     { "nr",               "-1" },
  732.     { "me_range",         "-1" },
  733.     { "me_method",        "-1" },
  734.     { "subq",             "-1" },
  735.     { "b_strategy",       "-1" },
  736.     { "keyint_min",       "-1" },
  737.     { "coder",            "-1" },
  738.     { "cmp",              "-1" },
  739.     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },
  740.     { "thread_type",      "0" },
  741.     { "flags",            "+cgop" },
  742.     { "rc_init_occupancy","-1" },
  743.     { NULL },
  744. };
  745.  
  746. AVCodec ff_libx264_encoder = {
  747.     .name             = "libx264",
  748.     .long_name        = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
  749.     .type             = AVMEDIA_TYPE_VIDEO,
  750.     .id               = AV_CODEC_ID_H264,
  751.     .priv_data_size   = sizeof(X264Context),
  752.     .init             = X264_init,
  753.     .encode2          = X264_frame,
  754.     .close            = X264_close,
  755.     .capabilities     = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
  756.     .priv_class       = &x264_class,
  757.     .defaults         = x264_defaults,
  758.     .init_static_data = X264_init_static,
  759. };
  760.  
  761. AVCodec ff_libx264rgb_encoder = {
  762.     .name           = "libx264rgb",
  763.     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
  764.     .type           = AVMEDIA_TYPE_VIDEO,
  765.     .id             = AV_CODEC_ID_H264,
  766.     .priv_data_size = sizeof(X264Context),
  767.     .init           = X264_init,
  768.     .encode2        = X264_frame,
  769.     .close          = X264_close,
  770.     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
  771.     .priv_class     = &rgbclass,
  772.     .defaults       = x264_defaults,
  773.     .pix_fmts       = pix_fmts_8bit_rgb,
  774. };
  775.