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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/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. #include <x264.h>

  29. #include <float.h>

  30. #include <math.h>

  31. #include <stdio.h>

  32. #include <stdlib.h>

  33. #include <string.h>

  34. 

  35. typedef struct X264Context {

  36.     AVClass        *class;

  37.     x264_param_t    params;

  38.     x264_t         *enc;

  39.     x264_picture_t  pic;

  40.     uint8_t        *sei;

  41.     int             sei_size;

  42.     AVFrame         out_pic;

  43.     char *preset;

  44.     char *tune;

  45.     char *profile;

  46.     char *level;

  47.     int fastfirstpass;

  48.     char *wpredp;

  49.     char *x264opts;

  50.     float crf;

  51.     float crf_max;

  52.     int cqp;

  53.     int aq_mode;

  54.     float aq_strength;

  55.     char *psy_rd;

  56.     int psy;

  57.     int rc_lookahead;

  58.     int weightp;

  59.     int weightb;

  60.     int ssim;

  61.     int intra_refresh;

  62.     int b_bias;

  63.     int b_pyramid;

  64.     int mixed_refs;

  65.     int dct8x8;

  66.     int fast_pskip;

  67.     int aud;

  68.     int mbtree;

  69.     char *deblock;

  70.     float cplxblur;

  71.     char *partitions;

  72.     int direct_pred;

  73.     int slice_max_size;

  74.     char *stats;

  75.     int nal_hrd;

  76.     char *x264_params;

  77. } X264Context;

  78. 

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

  80. {

  81.     static const int level_map[] = {

  82.         [X264_LOG_ERROR]   = AV_LOG_ERROR,

  83.         [X264_LOG_WARNING] = AV_LOG_WARNING,

  84.         [X264_LOG_INFO]    = AV_LOG_INFO,

  85.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG

  86.     };

  87. 

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

  89.         return;

  90. 

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

  92. }

  93. 

  94. 

  95. static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,

  96.                        x264_nal_t *nals, int nnal)

  97. {

  98.     X264Context *x4 = ctx->priv_data;

  99.     uint8_t *p;

  100.     int i, size = x4->sei_size, ret;

  101. 

  102.     if (!nnal)

  103.         return 0;

  104. 

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

  106.         size += nals[i].i_payload;

  107. 

  108.     if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)

  109.         return ret;

  110. 

  111.     p = pkt->data;

  112. 

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

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

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

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

  117.             return -1;

  118.         }

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

  120.         p += x4->sei_size;

  121.         x4->sei_size = 0;

  122.         av_freep(&x4->sei);

  123.     }

  124. 

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

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

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

  128.     }

  129. 

  130.     return 1;

  131. }

  132. 

  133. static int avfmt2_num_planes(int avfmt)

  134. {

  135.     switch (avfmt) {

  136.     case AV_PIX_FMT_YUV420P:

  137.     case AV_PIX_FMT_YUVJ420P:

  138.     case AV_PIX_FMT_YUV420P9:

  139.     case AV_PIX_FMT_YUV420P10:

  140.     case AV_PIX_FMT_YUV444P:

  141.         return 3;

  142. 

  143.     case AV_PIX_FMT_BGR24:

  144.     case AV_PIX_FMT_RGB24:

  145.         return 1;

  146. 

  147.     default:

  148.         return 3;

  149.     }

  150. }

  151. 

  152. static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,

  153.                       int *got_packet)

  154. {

  155.     X264Context *x4 = ctx->priv_data;

  156.     x264_nal_t *nal;

  157.     int nnal, i, ret;

  158.     x264_picture_t pic_out;

  159. 

  160.     x264_picture_init( &x4->pic );

  161.     x4->pic.img.i_csp   = x4->params.i_csp;

  162.     if (x264_bit_depth > 8)

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

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

  165. 

  166.     if (frame) {

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

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

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

  170.         }

  171. 

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

  173.         x4->pic.i_type =

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

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

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

  177.                                             X264_TYPE_AUTO;

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

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

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

  181.         }

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

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

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

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

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

  187.         }

  188.     }

  189. 

  190.     do {

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

  192.             return -1;

  193. 

  194.         ret = encode_nals(ctx, pkt, nal, nnal);

  195.         if (ret < 0)

  196.             return -1;

  197.     } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));

  198. 

  199.     pkt->pts = pic_out.i_pts;

  200.     pkt->dts = pic_out.i_dts;

  201. 

  202.     switch (pic_out.i_type) {

  203.     case X264_TYPE_IDR:

  204.     case X264_TYPE_I:

  205.         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;

  206.         break;

  207.     case X264_TYPE_P:

  208.         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;

  209.         break;

  210.     case X264_TYPE_B:

  211.     case X264_TYPE_BREF:

  212.         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;

  213.         break;

  214.     }

  215. 

  216.     pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;

  217.     if (ret)

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

  219. 

  220.     *got_packet = ret;

  221.     return 0;

  222. }

  223. 

  224. static av_cold int X264_close(AVCodecContext *avctx)

  225. {

  226.     X264Context *x4 = avctx->priv_data;

  227. 

  228.     av_freep(&avctx->extradata);

  229.     av_free(x4->sei);

  230. 

  231.     if (x4->enc)

  232.         x264_encoder_close(x4->enc);

  233. 

  234.     return 0;

  235. }

  236. 

  237. #define OPT_STR(opt, param)                                                   \

  238.     do {                                                                      \

  239.         int ret;                                                              \

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

  241.             if(ret == X264_PARAM_BAD_NAME)                                    \

  242.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  244.             else                                                              \

  245.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  247.             return -1;                                                        \

  248.         }                                                                     \

  249.     } while (0)

  250. 

  251. static int convert_pix_fmt(enum AVPixelFormat pix_fmt)

  252. {

  253.     switch (pix_fmt) {

  254.     case AV_PIX_FMT_YUV420P:

  255.     case AV_PIX_FMT_YUVJ420P:

  256.     case AV_PIX_FMT_YUV420P9:

  257.     case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;

  258.     case AV_PIX_FMT_YUV422P:

  259.     case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;

  260.     case AV_PIX_FMT_YUV444P:

  261.     case AV_PIX_FMT_YUV444P9:

  262.     case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;

  263. #ifdef X264_CSP_BGR

  264.     case AV_PIX_FMT_BGR24:

  265.         return X264_CSP_BGR;

  266. 

  267.     case AV_PIX_FMT_RGB24:

  268.         return X264_CSP_RGB;

  269. #endif

  270.     };

  271.     return 0;

  272. }

  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.     int sw,sh;

  284. 

  285.     x264_param_default(&x4->params);

  286. 

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

  288. 

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

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

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

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

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

  294.             int i;

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

  296.             av_log(avctx, AV_LOG_INFO, "Possible presets:");

  297.             for (i = 0; x264_preset_names[i]; i++)

  298.                 av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);

  299.             av_log(avctx, AV_LOG_INFO, "\n");

  300.             av_log(avctx, AV_LOG_INFO, "Possible tunes:");

  301.             for (i = 0; x264_tune_names[i]; i++)

  302.                 av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);

  303.             av_log(avctx, AV_LOG_INFO, "\n");

  304.             return AVERROR(EINVAL);

  305.         }

  306. 

  307.     if (avctx->level > 0)

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

  309. 

  310.     x4->params.pf_log               = X264_log;

  311.     x4->params.p_log_private        = avctx;

  312.     x4->params.i_log_level          = X264_LOG_DEBUG;

  313.     x4->params.i_csp                = convert_pix_fmt(avctx->pix_fmt);

  314. 

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

  316. 

  317.     if (avctx->bit_rate) {

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

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

  320.     }

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

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

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

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

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

  326.     } else {

  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.     if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&

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

  341.         x4->params.rc.f_vbv_buffer_init =

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

  343.     }

  344. 

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

  346. 

  347.     if(x4->x264opts){

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

  349.         while(p){

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

  351.             if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){

  352.                 OPT_STR(param, "1");

  353.             }else

  354.                 OPT_STR(param, val);

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

  356.             p+=!!p;

  357.         }

  358.     }

  359. 

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

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

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

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

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

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

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

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

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

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

  370. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  405. 

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

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

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

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

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

  411.     PARSE_X264_OPT("deblock", deblock);

  412.     PARSE_X264_OPT("partitions", partitions);

  413.     PARSE_X264_OPT("stats", stats);

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

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

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

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

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

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

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

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

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

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

  424. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  445. 

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

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

  448.     else {

  449.         /*

  450.          * Allow x264 to be instructed through AVCodecContext about the maximum

  451.          * size of the RTP payload. For example, this enables the production of

  452.          * payload suitable for the H.264 RTP packetization-mode 0 i.e. single

  453.          * NAL unit per RTP packet.

  454.          */

  455.         if (avctx->rtp_payload_size)

  456.             x4->params.i_slice_max_size = avctx->rtp_payload_size;

  457.     }

  458. 

  459.     if (x4->fastfirstpass)

  460.         x264_param_apply_fastfirstpass(&x4->params);

  461. 

  462.     /* Allow specifying the x264 profile through AVCodecContext. */

  463.     if (!x4->profile)

  464.         switch (avctx->profile) {

  465.         case FF_PROFILE_H264_BASELINE:

  466.             x4->profile = av_strdup("baseline");

  467.             break;

  468.         case FF_PROFILE_H264_HIGH:

  469.             x4->profile = av_strdup("high");

  470.             break;

  471.         case FF_PROFILE_H264_HIGH_10:

  472.             x4->profile = av_strdup("high10");

  473.             break;

  474.         case FF_PROFILE_H264_HIGH_422:

  475.             x4->profile = av_strdup("high422");

  476.             break;

  477.         case FF_PROFILE_H264_HIGH_444:

  478.             x4->profile = av_strdup("high444");

  479.             break;

  480.         case FF_PROFILE_H264_MAIN:

  481.             x4->profile = av_strdup("main");

  482.             break;

  483.         default:

  484.             break;

  485.         }

  486. 

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

  488.         x4->params.i_nal_hrd = x4->nal_hrd;

  489. 

  490.     if (x4->profile)

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

  492.             int i;

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

  494.             av_log(avctx, AV_LOG_INFO, "Possible profiles:");

  495.             for (i = 0; x264_profile_names[i]; i++)

  496.                 av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);

  497.             av_log(avctx, AV_LOG_INFO, "\n");

  498.             return AVERROR(EINVAL);

  499.         }

  500. 

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

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

  503.     av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);

  504.     x4->params.vui.i_sar_width  = sw;

  505.     x4->params.vui.i_sar_height = sh;

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

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

  508. 

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

  510. 

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

  512.     if (avctx->thread_type)

  513.         x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;

  514. 

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

  516. 

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

  518. 

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

  520. 

  521.     x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P;

  522. 

  523.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)

  524.         x4->params.b_repeat_headers = 0;

  525. 

  526.     if (x4->x264_params) {

  527.         AVDictionary *dict    = NULL;

  528.         AVDictionaryEntry *en = NULL;

  529. 

  530.         if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {

  531.             while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {

  532.                 if (x264_param_parse(&x4->params, en->key, en->value) < 0)

  533.                     av_log(avctx, AV_LOG_WARNING,

  534.                            "Error parsing option '%s = %s'.\n",

  535.                             en->key, en->value);

  536.             }

  537. 

  538.             av_dict_free(&dict);

  539.         }

  540.     }

  541. 

  542.     // update AVCodecContext with x264 parameters

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

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

  545.     if (avctx->max_b_frames < 0)

  546.         avctx->max_b_frames = 0;

  547. 

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

  549. 

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

  551.     if (!x4->enc)

  552.         return -1;

  553. 

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

  555. 

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

  557.         x264_nal_t *nal;

  558.         uint8_t *p;

  559.         int nnal, s, i;

  560. 

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

  562.         avctx->extradata = p = av_malloc(s);

  563. 

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

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

  566.             if (nal[i].i_type == NAL_SEI) {

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

  568.                 x4->sei_size = nal[i].i_payload;

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

  570.                 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);

  571.                 continue;

  572.             }

  573.             memcpy(p, nal[i].p_payload, nal[i].i_payload);

  574.             p += nal[i].i_payload;

  575.         }

  576.         avctx->extradata_size = p - avctx->extradata;

  577.     }

  578. 

  579.     return 0;

  580. }

  581. 

  582. static const enum AVPixelFormat pix_fmts_8bit[] = {

  583.     AV_PIX_FMT_YUV420P,

  584.     AV_PIX_FMT_YUVJ420P,

  585.     AV_PIX_FMT_YUV422P,

  586.     AV_PIX_FMT_YUV444P,

  587.     AV_PIX_FMT_NONE

  588. };

  589. static const enum AVPixelFormat pix_fmts_9bit[] = {

  590.     AV_PIX_FMT_YUV420P9,

  591.     AV_PIX_FMT_YUV444P9,

  592.     AV_PIX_FMT_NONE

  593. };

  594. static const enum AVPixelFormat pix_fmts_10bit[] = {

  595.     AV_PIX_FMT_YUV420P10,

  596.     AV_PIX_FMT_YUV422P10,

  597.     AV_PIX_FMT_YUV444P10,

  598.     AV_PIX_FMT_NONE

  599. };

  600. static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {

  601. #ifdef X264_CSP_BGR

  602.     AV_PIX_FMT_BGR24,

  603.     AV_PIX_FMT_RGB24,

  604. #endif

  605.     AV_PIX_FMT_NONE

  606. };

  607. 

  608. static av_cold void X264_init_static(AVCodec *codec)

  609. {

  610.     if (x264_bit_depth == 8)

  611.         codec->pix_fmts = pix_fmts_8bit;

  612.     else if (x264_bit_depth == 9)

  613.         codec->pix_fmts = pix_fmts_9bit;

  614.     else if (x264_bit_depth == 10)

  615.         codec->pix_fmts = pix_fmts_10bit;

  616. }

  617. 

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

  619. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  620. static const AVOption options[] = {

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

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

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

  624.     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), AV_OPT_TYPE_INT,    { .i64 = 1 }, 0, 1, VE},

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

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

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

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

  629.     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE },

  630.     { "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 },

  631.     { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE },

  632.     { "aq-mode",       "AQ method",                                       OFFSET(aq_mode),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},

  633.     { "none",          NULL,                              0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },

  634.     { "variance",      "Variance AQ (complexity mask)",   0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE},     INT_MIN, INT_MAX, VE, "aq_mode" },

  635.     { "autovariance",  "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },

  636.     { "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},

  637.     { "psy",           "Use psychovisual optimizations.",                 OFFSET(psy),           AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },

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

  639.     { "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 },

  640.     { "weightb",       "Weighted prediction for B-frames.",               OFFSET(weightb),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },

  641.     { "weightp",       "Weighted prediction analysis method.",            OFFSET(weightp),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },

  642.     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },

  643.     { "simple",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },

  644.     { "smart",         NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },

  645.     { "ssim",          "Calculate and print SSIM stats.",                 OFFSET(ssim),          AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },

  646.     { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE },

  647.     { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },

  648.     { "b-pyramid",     "Keep some B-frames as references.",               OFFSET(b_pyramid),     AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },

  649.     { "none",          NULL,                                  0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },

  650.     { "strict",        "Strictly hierarchical pyramid",       0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },

  651.     { "normal",        "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },

  652.     { "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 },

  653.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},

  654.     { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},

  655.     { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},

  656.     { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, 1, VE},

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

  658.     { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {.dbl = -1 }, -1, FLT_MAX, VE},

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

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

  661.     { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },

  662.     { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },

  663.     { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },

  664.     { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },

  665.     { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },

  666.     { "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 },

  667.     { "stats",         "Filename for 2 pass stats",                       OFFSET(stats),         AV_OPT_TYPE_STRING, { 0 },  0,       0, VE },

  668.     { "nal-hrd",       "Signal HRD information (requires vbv-bufsize; "

  669.                        "cbr not allowed in .mp4)",                        OFFSET(nal_hrd),       AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },

  670.     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },

  671.     { "vbr",           NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR},  INT_MIN, INT_MAX, VE, "nal-hrd" },

  672.     { "cbr",           NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR},  INT_MIN, INT_MAX, VE, "nal-hrd" },

  673.     { "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 },

  674.     { NULL },

  675. };

  676. 

  677. static const AVClass class = {

  678.     .class_name = "libx264",

  679.     .item_name  = av_default_item_name,

  680.     .option     = options,

  681.     .version    = LIBAVUTIL_VERSION_INT,

  682. };

  683. 

  684. static const AVClass rgbclass = {

  685.     .class_name = "libx264rgb",

  686.     .item_name  = av_default_item_name,

  687.     .option     = options,

  688.     .version    = LIBAVUTIL_VERSION_INT,

  689. };

  690. 

  691. static const AVCodecDefault x264_defaults[] = {

  692.     { "b",                "0" },

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

  694.     { "flags2",           "0" },

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

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

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

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

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

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

  701. //     { "rc_lookahead",     "-1" },

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

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

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

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

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

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

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

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

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

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

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

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

  714.     { "thread_type",      "0" },

  715.     { "flags",            "+cgop" },

  716.     { "rc_init_occupancy","-1" },

  717.     { NULL },

  718. };

  719. 

  720. AVCodec ff_libx264_encoder = {

  721.     .name             = "libx264",

  722.     .type             = AVMEDIA_TYPE_VIDEO,

  723.     .id               = AV_CODEC_ID_H264,

  724.     .priv_data_size   = sizeof(X264Context),

  725.     .init             = X264_init,

  726.     .encode2          = X264_frame,

  727.     .close            = X264_close,

  728.     .capabilities     = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,

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

  730.     .priv_class       = &class,

  731.     .defaults         = x264_defaults,

  732.     .init_static_data = X264_init_static,

  733. };

  734. 

  735. AVCodec ff_libx264rgb_encoder = {

  736.     .name           = "libx264rgb",

  737.     .type           = AVMEDIA_TYPE_VIDEO,

  738.     .id             = AV_CODEC_ID_H264,

  739.     .priv_data_size = sizeof(X264Context),

  740.     .init           = X264_init,

  741.     .encode2        = X264_frame,

  742.     .close          = X264_close,

  743.     .capabilities   = CODEC_CAP_DELAY,

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

  745.     .priv_class     = &rgbclass,

  746.     .defaults       = x264_defaults,

  747.     .pix_fmts       = pix_fmts_8bit_rgb,

  748. };