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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/eval.h"

  23. #include "libavutil/internal.h"

  24. #include "libavutil/opt.h"

  25. #include "libavutil/mem.h"

  26. #include "libavutil/pixdesc.h"

  27. #include "libavutil/stereo3d.h"

  28. #include "libavutil/intreadwrite.h"

  29. #include "avcodec.h"

  30. #include "internal.h"

  31. 

  32. #if defined(_MSC_VER)

  33. #define X264_API_IMPORTS 1

  34. #endif

  35. 

  36. #include <x264.h>

  37. #include <float.h>

  38. #include <math.h>

  39. #include <stdio.h>

  40. #include <stdlib.h>

  41. #include <string.h>

  42. 

  43. typedef struct X264Context {

  44.     AVClass        *class;

  45.     x264_param_t    params;

  46.     x264_t         *enc;

  47.     x264_picture_t  pic;

  48.     uint8_t        *sei;

  49.     int             sei_size;

  50.     char *preset;

  51.     char *tune;

  52.     char *profile;

  53.     char *level;

  54.     int fastfirstpass;

  55.     char *wpredp;

  56.     char *x264opts;

  57.     float crf;

  58.     float crf_max;

  59.     int cqp;

  60.     int aq_mode;

  61.     float aq_strength;

  62.     char *psy_rd;

  63.     int psy;

  64.     int rc_lookahead;

  65.     int weightp;

  66.     int weightb;

  67.     int ssim;

  68.     int intra_refresh;

  69.     int bluray_compat;

  70.     int b_bias;

  71.     int b_pyramid;

  72.     int mixed_refs;

  73.     int dct8x8;

  74.     int fast_pskip;

  75.     int aud;

  76.     int mbtree;

  77.     char *deblock;

  78.     float cplxblur;

  79.     char *partitions;

  80.     int direct_pred;

  81.     int slice_max_size;

  82.     char *stats;

  83.     int nal_hrd;

  84.     int avcintra_class;

  85.     int motion_est;

  86.     int forced_idr;

  87.     int coder;

  88.     int a53_cc;

  89.     int b_frame_strategy;

  90.     int chroma_offset;

  91.     int scenechange_threshold;

  92.     int noise_reduction;

  93. 

  94.     char *x264_params;

  95. } X264Context;

  96. 

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

  98. {

  99.     static const int level_map[] = {

  100.         [X264_LOG_ERROR]   = AV_LOG_ERROR,

  101.         [X264_LOG_WARNING] = AV_LOG_WARNING,

  102.         [X264_LOG_INFO]    = AV_LOG_INFO,

  103.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG

  104.     };

  105. 

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

  107.         return;

  108. 

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

  110. }

  111. 

  112. 

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

  114.                        const x264_nal_t *nals, int nnal)

  115. {

  116.     X264Context *x4 = ctx->priv_data;

  117.     uint8_t *p;

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

  119. 

  120.     if (!nnal)

  121.         return 0;

  122. 

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

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

  125. 

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

  127.         return ret;

  128. 

  129.     p = pkt->data;

  130. 

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

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

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

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

  135.             return -1;

  136.         }

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

  138.         p += x4->sei_size;

  139.         x4->sei_size = 0;

  140.         av_freep(&x4->sei);

  141.     }

  142. 

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

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

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

  146.     }

  147. 

  148.     return 1;

  149. }

  150. 

  151. static int avfmt2_num_planes(int avfmt)

  152. {

  153.     switch (avfmt) {

  154.     case AV_PIX_FMT_YUV420P:

  155.     case AV_PIX_FMT_YUVJ420P:

  156.     case AV_PIX_FMT_YUV420P9:

  157.     case AV_PIX_FMT_YUV420P10:

  158.     case AV_PIX_FMT_YUV444P:

  159.         return 3;

  160. 

  161.     case AV_PIX_FMT_BGR0:

  162.     case AV_PIX_FMT_BGR24:

  163.     case AV_PIX_FMT_RGB24:

  164.         return 1;

  165. 

  166.     default:

  167.         return 3;

  168.     }

  169. }

  170. 

  171. static void reconfig_encoder(AVCodecContext *ctx, const AVFrame *frame)

  172. {

  173.     X264Context *x4 = ctx->priv_data;

  174.     AVFrameSideData *side_data;

  175. 

  176. 

  177.   if (x4->avcintra_class < 0) {

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

  179. 

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

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

  182.     }

  183.     if (x4->params.vui.i_sar_height*ctx->sample_aspect_ratio.num != ctx->sample_aspect_ratio.den * x4->params.vui.i_sar_width) {

  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.     if (x4->params.rc.i_vbv_buffer_size != ctx->rc_buffer_size / 1000 ||

  190.         x4->params.rc.i_vbv_max_bitrate != ctx->rc_max_rate    / 1000) {

  191.         x4->params.rc.i_vbv_buffer_size = ctx->rc_buffer_size / 1000;

  192.         x4->params.rc.i_vbv_max_bitrate = ctx->rc_max_rate    / 1000;

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

  194.     }

  195. 

  196.     if (x4->params.rc.i_rc_method == X264_RC_ABR &&

  197.         x4->params.rc.i_bitrate != ctx->bit_rate / 1000) {

  198.         x4->params.rc.i_bitrate = ctx->bit_rate / 1000;

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

  200.     }

  201. 

  202.     if (x4->crf >= 0 &&

  203.         x4->params.rc.i_rc_method == X264_RC_CRF &&

  204.         x4->params.rc.f_rf_constant != x4->crf) {

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

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

  207.     }

  208. 

  209.     if (x4->params.rc.i_rc_method == X264_RC_CQP &&

  210.         x4->cqp >= 0 &&

  211.         x4->params.rc.i_qp_constant != x4->cqp) {

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

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

  214.     }

  215. 

  216.     if (x4->crf_max >= 0 &&

  217.         x4->params.rc.f_rf_constant_max != x4->crf_max) {

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

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

  220.     }

  221.   }

  222. 

  223.     side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_STEREO3D);

  224.     if (side_data) {

  225.         AVStereo3D *stereo = (AVStereo3D *)side_data->data;

  226.         int fpa_type;

  227. 

  228.         switch (stereo->type) {

  229.         case AV_STEREO3D_CHECKERBOARD:

  230.             fpa_type = 0;

  231.             break;

  232.         case AV_STEREO3D_COLUMNS:

  233.             fpa_type = 1;

  234.             break;

  235.         case AV_STEREO3D_LINES:

  236.             fpa_type = 2;

  237.             break;

  238.         case AV_STEREO3D_SIDEBYSIDE:

  239.             fpa_type = 3;

  240.             break;

  241.         case AV_STEREO3D_TOPBOTTOM:

  242.             fpa_type = 4;

  243.             break;

  244.         case AV_STEREO3D_FRAMESEQUENCE:

  245.             fpa_type = 5;

  246.             break;

  247.         default:

  248.             fpa_type = -1;

  249.             break;

  250.         }

  251. 

  252.         if (fpa_type != x4->params.i_frame_packing) {

  253.             x4->params.i_frame_packing = fpa_type;

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

  255.         }

  256.     }

  257. }

  258. 

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

  260.                       int *got_packet)

  261. {

  262.     X264Context *x4 = ctx->priv_data;

  263.     x264_nal_t *nal;

  264.     int nnal, i, ret;

  265.     x264_picture_t pic_out = {0};

  266.     int pict_type;

  267.     AVFrameSideData *side_data;

  268. 

  269.     x264_picture_init( &x4->pic );

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

  271.     if (x264_bit_depth > 8)

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

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

  274. 

  275.     if (frame) {

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

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

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

  279.         }

  280. 

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

  282. 

  283.         switch (frame->pict_type) {

  284.         case AV_PICTURE_TYPE_I:

  285.             x4->pic.i_type = x4->forced_idr >= 0 ? X264_TYPE_IDR

  286.                                                  : X264_TYPE_KEYFRAME;

  287.             break;

  288.         case AV_PICTURE_TYPE_P:

  289.             x4->pic.i_type = X264_TYPE_P;

  290.             break;

  291.         case AV_PICTURE_TYPE_B:

  292.             x4->pic.i_type = X264_TYPE_B;

  293.             break;

  294.         default:

  295.             x4->pic.i_type = X264_TYPE_AUTO;

  296.             break;

  297.         }

  298.         reconfig_encoder(ctx, frame);

  299. 

  300.         if (x4->a53_cc) {

  301.             side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);

  302.             if (side_data) {

  303.                 x4->pic.extra_sei.payloads = av_mallocz(sizeof(x4->pic.extra_sei.payloads[0]));

  304.                 if (x4->pic.extra_sei.payloads == NULL) {

  305.                     av_log(ctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");

  306.                     goto skip_a53cc;

  307.                 }

  308.                 x4->pic.extra_sei.sei_free = av_free;

  309. 

  310.                 x4->pic.extra_sei.payloads[0].payload_size = side_data->size + 11;

  311.                 x4->pic.extra_sei.payloads[0].payload = av_mallocz(x4->pic.extra_sei.payloads[0].payload_size);

  312.                 if (x4->pic.extra_sei.payloads[0].payload == NULL) {

  313.                     av_log(ctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");

  314.                     av_freep(&x4->pic.extra_sei.payloads);

  315.                     goto skip_a53cc;

  316.                 }

  317.                 x4->pic.extra_sei.num_payloads = 1;

  318.                 x4->pic.extra_sei.payloads[0].payload_type = 4;

  319.                 memcpy(x4->pic.extra_sei.payloads[0].payload + 10, side_data->data, side_data->size);

  320.                 x4->pic.extra_sei.payloads[0].payload[0] = 181;

  321.                 x4->pic.extra_sei.payloads[0].payload[1] = 0;

  322.                 x4->pic.extra_sei.payloads[0].payload[2] = 49;

  323. 

  324.                 /**

  325.                  * 'GA94' is standard in North America for ATSC, but hard coding

  326.                  * this style may not be the right thing to do -- other formats

  327.                  * do exist. This information is not available in the side_data

  328.                  * so we are going with this right now.

  329.                  */

  330.                 AV_WL32(x4->pic.extra_sei.payloads[0].payload + 3,

  331.                     MKTAG('G', 'A', '9', '4'));

  332.                 x4->pic.extra_sei.payloads[0].payload[7] = 3;

  333.                 x4->pic.extra_sei.payloads[0].payload[8] =

  334.                     ((side_data->size/3) & 0x1f) | 0x40;

  335.                 x4->pic.extra_sei.payloads[0].payload[9] = 0;

  336.                 x4->pic.extra_sei.payloads[0].payload[side_data->size+10] = 255;

  337.             }

  338.         }

  339.     }

  340. skip_a53cc:

  341.     do {

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

  343.             return AVERROR_EXTERNAL;

  344. 

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

  346.         if (ret < 0)

  347.             return ret;

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

  349. 

  350.     pkt->pts = pic_out.i_pts;

  351.     pkt->dts = pic_out.i_dts;

  352. 

  353. 

  354.     switch (pic_out.i_type) {

  355.     case X264_TYPE_IDR:

  356.     case X264_TYPE_I:

  357.         pict_type = AV_PICTURE_TYPE_I;

  358.         break;

  359.     case X264_TYPE_P:

  360.         pict_type = AV_PICTURE_TYPE_P;

  361.         break;

  362.     case X264_TYPE_B:

  363.     case X264_TYPE_BREF:

  364.         pict_type = AV_PICTURE_TYPE_B;

  365.         break;

  366.     default:

  367.         pict_type = AV_PICTURE_TYPE_NONE;

  368.     }

  369. #if FF_API_CODED_FRAME

  370. FF_DISABLE_DEPRECATION_WARNINGS

  371.     ctx->coded_frame->pict_type = pict_type;

  372. FF_ENABLE_DEPRECATION_WARNINGS

  373. #endif

  374. 

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

  376.     if (ret) {

  377.         ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);

  378. 

  379. #if FF_API_CODED_FRAME

  380. FF_DISABLE_DEPRECATION_WARNINGS

  381.         ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;

  382. FF_ENABLE_DEPRECATION_WARNINGS

  383. #endif

  384.     }

  385. 

  386.     *got_packet = ret;

  387.     return 0;

  388. }

  389. 

  390. static av_cold int X264_close(AVCodecContext *avctx)

  391. {

  392.     X264Context *x4 = avctx->priv_data;

  393. 

  394.     av_freep(&avctx->extradata);

  395.     av_freep(&x4->sei);

  396. 

  397.     if (x4->enc) {

  398.         x264_encoder_close(x4->enc);

  399.         x4->enc = NULL;

  400.     }

  401. 

  402.     return 0;

  403. }

  404. 

  405. #define OPT_STR(opt, param)                                                   \

  406.     do {                                                                      \

  407.         int ret;                                                              \

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

  409.             if(ret == X264_PARAM_BAD_NAME)                                    \

  410.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  412.             else                                                              \

  413.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  415.             return -1;                                                        \

  416.         }                                                                     \

  417.     } while (0)

  418. 

  419. static int convert_pix_fmt(enum AVPixelFormat pix_fmt)

  420. {

  421.     switch (pix_fmt) {

  422.     case AV_PIX_FMT_YUV420P:

  423.     case AV_PIX_FMT_YUVJ420P:

  424.     case AV_PIX_FMT_YUV420P9:

  425.     case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;

  426.     case AV_PIX_FMT_YUV422P:

  427.     case AV_PIX_FMT_YUVJ422P:

  428.     case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;

  429.     case AV_PIX_FMT_YUV444P:

  430.     case AV_PIX_FMT_YUVJ444P:

  431.     case AV_PIX_FMT_YUV444P9:

  432.     case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;

  433. #ifdef X264_CSP_BGR

  434.     case AV_PIX_FMT_BGR0:

  435.         return X264_CSP_BGRA;

  436.     case AV_PIX_FMT_BGR24:

  437.         return X264_CSP_BGR;

  438. 

  439.     case AV_PIX_FMT_RGB24:

  440.         return X264_CSP_RGB;

  441. #endif

  442.     case AV_PIX_FMT_NV12:      return X264_CSP_NV12;

  443.     case AV_PIX_FMT_NV16:

  444.     case AV_PIX_FMT_NV20:      return X264_CSP_NV16;

  445. #ifdef X264_CSP_NV21

  446.     case AV_PIX_FMT_NV21:      return X264_CSP_NV21;

  447. #endif

  448.     };

  449.     return 0;

  450. }

  451. 

  452. #define PARSE_X264_OPT(name, var)\

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

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

  455.         return AVERROR(EINVAL);\

  456.     }

  457. 

  458. static av_cold int X264_init(AVCodecContext *avctx)

  459. {

  460.     X264Context *x4 = avctx->priv_data;

  461.     AVCPBProperties *cpb_props;

  462.     int sw,sh;

  463. 

  464.     if (avctx->global_quality > 0)

  465.         av_log(avctx, AV_LOG_WARNING, "-qscale is ignored, -crf is recommended.\n");

  466. 

  467. #if CONFIG_LIBX262_ENCODER

  468.     if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  469.         x4->params.b_mpeg2 = 1;

  470.         x264_param_default_mpeg2(&x4->params);

  471.     } else

  472. #endif

  473.     x264_param_default(&x4->params);

  474. 

  475.     x4->params.b_deblocking_filter         = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;

  476. 

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

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

  479.             int i;

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

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

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

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

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

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

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

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

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

  489.             return AVERROR(EINVAL);

  490.         }

  491. 

  492.     if (avctx->level > 0)

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

  494. 

  495.     x4->params.pf_log               = X264_log;

  496.     x4->params.p_log_private        = avctx;

  497.     x4->params.i_log_level          = X264_LOG_DEBUG;

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

  499. 

  500.     PARSE_X264_OPT("weightp", wpredp);

  501. 

  502.     if (avctx->bit_rate) {

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

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

  505.     }

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

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

  508.     x4->params.rc.b_stat_write      = avctx->flags & AV_CODEC_FLAG_PASS1;

  509.     if (avctx->flags & AV_CODEC_FLAG_PASS2) {

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

  511.     } else {

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

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

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

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

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

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

  518.         }

  519. 

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

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

  522.     }

  523. 

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

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

  526.         x4->params.rc.f_vbv_buffer_init =

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

  528.     }

  529. 

  530.     PARSE_X264_OPT("level", level);

  531. 

  532.     if (avctx->i_quant_factor > 0)

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

  534.     if (avctx->b_quant_factor > 0)

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

  536. 

  537. #if FF_API_PRIVATE_OPT

  538. FF_DISABLE_DEPRECATION_WARNINGS

  539.     if (avctx->chromaoffset)

  540.         x4->chroma_offset = avctx->chromaoffset;

  541. FF_ENABLE_DEPRECATION_WARNINGS

  542. #endif

  543. 

  544.     if (x4->chroma_offset)

  545.         x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;

  546. 

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

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

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

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

  551. 

  552. #if FF_API_PRIVATE_OPT

  553. FF_DISABLE_DEPRECATION_WARNINGS

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

  555.         x4->scenechange_threshold = avctx->scenechange_threshold;

  556. FF_ENABLE_DEPRECATION_WARNINGS

  557. #endif

  558.     if (x4->scenechange_threshold >= 0)

  559.         x4->params.i_scenecut_threshold = x4->scenechange_threshold;

  560. 

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

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

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

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

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

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

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

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

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

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

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

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

  573.     else if (x4->level) {

  574.         int i;

  575.         int mbn = AV_CEIL_RSHIFT(avctx->width, 4) * AV_CEIL_RSHIFT(avctx->height, 4);

  576.         int level_id = -1;

  577.         char *tail;

  578.         int scale = X264_BUILD < 129 ? 384 : 1;

  579. 

  580.         if (!strcmp(x4->level, "1b")) {

  581.             level_id = 9;

  582.         } else if (strlen(x4->level) <= 3){

  583.             level_id = av_strtod(x4->level, &tail) * 10 + 0.5;

  584.             if (*tail)

  585.                 level_id = -1;

  586.         }

  587.         if (level_id <= 0)

  588.             av_log(avctx, AV_LOG_WARNING, "Failed to parse level\n");

  589. 

  590.         for (i = 0; i<x264_levels[i].level_idc; i++)

  591.             if (x264_levels[i].level_idc == level_id)

  592.                 x4->params.i_frame_reference = av_clip(x264_levels[i].dpb / mbn / scale, 1, x4->params.i_frame_reference);

  593.     }

  594. 

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

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

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

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

  599. #if FF_API_PRIVATE_OPT

  600.     FF_DISABLE_DEPRECATION_WARNINGS

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

  602.         x4->noise_reduction = avctx->noise_reduction;

  603.     FF_ENABLE_DEPRECATION_WARNINGS

  604. #endif

  605.     if (x4->noise_reduction >= 0)

  606.         x4->params.analyse.i_noise_reduction = x4->noise_reduction;

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

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

  609. #if FF_API_PRIVATE_OPT

  610. FF_DISABLE_DEPRECATION_WARNINGS

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

  612.         x4->b_frame_strategy = avctx->b_frame_strategy;

  613. FF_ENABLE_DEPRECATION_WARNINGS

  614. #endif

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

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

  617. #if FF_API_CODER_TYPE

  618. FF_DISABLE_DEPRECATION_WARNINGS

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

  620.         x4->coder = avctx->coder_type == FF_CODER_TYPE_AC;

  621. FF_ENABLE_DEPRECATION_WARNINGS

  622. #endif

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

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

  625. 

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

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

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

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

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

  631.     PARSE_X264_OPT("deblock", deblock);

  632.     PARSE_X264_OPT("partitions", partitions);

  633.     PARSE_X264_OPT("stats", stats);

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

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

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

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

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

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

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

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

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

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

  644. 

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

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

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

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

  649.     if (x4->bluray_compat >= 0) {

  650.         x4->params.b_bluray_compat = x4->bluray_compat;

  651.         x4->params.b_vfr_input = 0;

  652.     }

  653.     if (x4->avcintra_class >= 0)

  654. #if X264_BUILD >= 142

  655.         x4->params.i_avcintra_class = x4->avcintra_class;

  656. #else

  657.         av_log(avctx, AV_LOG_ERROR,

  658.                "x264 too old for AVC Intra, at least version 142 needed\n");

  659. #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  676. 

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

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

  679.     else {

  680.         /*

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

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

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

  684.          * NAL unit per RTP packet.

  685.          */

  686.         if (avctx->rtp_payload_size)

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

  688.     }

  689. 

  690.     if (x4->fastfirstpass)

  691.         x264_param_apply_fastfirstpass(&x4->params);

  692. 

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

  694.     if (!x4->profile)

  695.         switch (avctx->profile) {

  696.         case FF_PROFILE_H264_BASELINE:

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

  698.             break;

  699.         case FF_PROFILE_H264_HIGH:

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

  701.             break;

  702.         case FF_PROFILE_H264_HIGH_10:

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

  704.             break;

  705.         case FF_PROFILE_H264_HIGH_422:

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

  707.             break;

  708.         case FF_PROFILE_H264_HIGH_444:

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

  710.             break;

  711.         case FF_PROFILE_H264_MAIN:

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

  713.             break;

  714.         default:

  715.             break;

  716.         }

  717. 

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

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

  720. 

  721.     if (x4->motion_est >= 0) {

  722.         x4->params.analyse.i_me_method = x4->motion_est;

  723. #if FF_API_MOTION_EST

  724. FF_DISABLE_DEPRECATION_WARNINGS

  725.     } else {

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

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

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

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

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

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

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

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

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

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

  736. FF_ENABLE_DEPRECATION_WARNINGS

  737. #endif

  738.     }

  739. 

  740.     if (x4->coder >= 0)

  741.         x4->params.b_cabac = x4->coder;

  742. 

  743.     if (x4->b_frame_strategy >= 0)

  744.         x4->params.i_bframe_adaptive = x4->b_frame_strategy;

  745. 

  746.     if (x4->profile)

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

  748.             int i;

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

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

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

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

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

  754.             return AVERROR(EINVAL);

  755.         }

  756. 

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

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

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

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

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

  762.     x4->params.i_timebase_den = avctx->time_base.den;

  763.     x4->params.i_timebase_num = avctx->time_base.num;

  764.     x4->params.i_fps_num = avctx->time_base.den;

  765.     x4->params.i_fps_den = avctx->time_base.num * avctx->ticks_per_frame;

  766. 

  767.     x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;

  768. 

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

  770.     if (avctx->thread_type)

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

  772. 

  773.     x4->params.b_interlaced   = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;

  774. 

  775.     x4->params.b_open_gop     = !(avctx->flags & AV_CODEC_FLAG_CLOSED_GOP);

  776. 

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

  778. 

  779.     x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||

  780.                                  avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||

  781.                                  avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||

  782.                                  avctx->color_range == AVCOL_RANGE_JPEG;

  783. 

  784.     if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED)

  785.         x4->params.vui.i_colmatrix = avctx->colorspace;

  786.     if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED)

  787.         x4->params.vui.i_colorprim = avctx->color_primaries;

  788.     if (avctx->color_trc != AVCOL_TRC_UNSPECIFIED)

  789.         x4->params.vui.i_transfer  = avctx->color_trc;

  790. 

  791.     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)

  792.         x4->params.b_repeat_headers = 0;

  793. 

  794.     if(x4->x264opts){

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

  796.         while(p){

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

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

  799.                 OPT_STR(param, "1");

  800.             }else

  801.                 OPT_STR(param, val);

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

  803.             p+=!!p;

  804.         }

  805.     }

  806. 

  807.     if (x4->x264_params) {

  808.         AVDictionary *dict    = NULL;

  809.         AVDictionaryEntry *en = NULL;

  810. 

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

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

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

  814.                     av_log(avctx, AV_LOG_WARNING,

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

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

  817.             }

  818. 

  819.             av_dict_free(&dict);

  820.         }

  821.     }

  822. 

  823.     // update AVCodecContext with x264 parameters

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

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

  826.     if (avctx->max_b_frames < 0)

  827.         avctx->max_b_frames = 0;

  828. 

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

  830. 

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

  832.     if (!x4->enc)

  833.         return AVERROR_EXTERNAL;

  834. 

  835.     if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {

  836.         x264_nal_t *nal;

  837.         uint8_t *p;

  838.         int nnal, s, i;

  839. 

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

  841.         avctx->extradata = p = av_mallocz(s + AV_INPUT_BUFFER_PADDING_SIZE);

  842.         if (!p)

  843.             return AVERROR(ENOMEM);

  844. 

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

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

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

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

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

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

  851.                 if (!x4->sei)

  852.                     return AVERROR(ENOMEM);

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

  854.                 continue;

  855.             }

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

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

  858.         }

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

  860.     }

  861. 

  862.     cpb_props = ff_add_cpb_side_data(avctx);

  863.     if (!cpb_props)

  864.         return AVERROR(ENOMEM);

  865.     cpb_props->buffer_size = x4->params.rc.i_vbv_buffer_size * 1000;

  866.     cpb_props->max_bitrate = x4->params.rc.i_vbv_max_bitrate * 1000;

  867.     cpb_props->avg_bitrate = x4->params.rc.i_bitrate         * 1000;

  868. 

  869.     return 0;

  870. }

  871. 

  872. static const enum AVPixelFormat pix_fmts_8bit[] = {

  873.     AV_PIX_FMT_YUV420P,

  874.     AV_PIX_FMT_YUVJ420P,

  875.     AV_PIX_FMT_YUV422P,

  876.     AV_PIX_FMT_YUVJ422P,

  877.     AV_PIX_FMT_YUV444P,

  878.     AV_PIX_FMT_YUVJ444P,

  879.     AV_PIX_FMT_NV12,

  880.     AV_PIX_FMT_NV16,

  881. #ifdef X264_CSP_NV21

  882.     AV_PIX_FMT_NV21,

  883. #endif

  884.     AV_PIX_FMT_NONE

  885. };

  886. static const enum AVPixelFormat pix_fmts_9bit[] = {

  887.     AV_PIX_FMT_YUV420P9,

  888.     AV_PIX_FMT_YUV444P9,

  889.     AV_PIX_FMT_NONE

  890. };

  891. static const enum AVPixelFormat pix_fmts_10bit[] = {

  892.     AV_PIX_FMT_YUV420P10,

  893.     AV_PIX_FMT_YUV422P10,

  894.     AV_PIX_FMT_YUV444P10,

  895.     AV_PIX_FMT_NV20,

  896.     AV_PIX_FMT_NONE

  897. };

  898. static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {

  899. #ifdef X264_CSP_BGR

  900.     AV_PIX_FMT_BGR0,

  901.     AV_PIX_FMT_BGR24,

  902.     AV_PIX_FMT_RGB24,

  903. #endif

  904.     AV_PIX_FMT_NONE

  905. };

  906. 

  907. static av_cold void X264_init_static(AVCodec *codec)

  908. {

  909.     if (x264_bit_depth == 8)

  910.         codec->pix_fmts = pix_fmts_8bit;

  911.     else if (x264_bit_depth == 9)

  912.         codec->pix_fmts = pix_fmts_9bit;

  913.     else if (x264_bit_depth == 10)

  914.         codec->pix_fmts = pix_fmts_10bit;

  915. }

  916. 

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

  918. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  919. static const AVOption options[] = {

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

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

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

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

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

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

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

  927.     {"a53cc",          "Use A53 Closed Captions (if available)",          OFFSET(a53_cc),        AV_OPT_TYPE_BOOL,   {.i64 = 0}, 0, 1, VE},

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

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

  930.     { "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 },

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

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

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

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

  935.     { "autovariance",  "Auto-variance AQ",                0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },

  936. #if X264_BUILD >= 144

  937.     { "autovariance-biased", "Auto-variance AQ with bias to dark scenes", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE_BIASED}, INT_MIN, INT_MAX, VE, "aq_mode" },

  938. #endif

  939.     { "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},

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

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

  942.     { "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 },

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

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

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

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

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

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

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

  950.     { "bluray-compat", "Bluray compatibility workarounds.",               OFFSET(bluray_compat) ,AV_OPT_TYPE_BOOL,   { .i64 = -1 }, -1, 1, VE },

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

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

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

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

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

  956.     { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, { .i64 = -1}, -1, 1, VE },

  957.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_BOOL,   { .i64 = -1 }, -1, 1, VE},

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

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

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

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

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

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

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

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

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

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

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

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

  970.     { "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 },

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

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

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

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

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

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

  977.     { "avcintra-class","AVC-Intra class 50/100/200",                      OFFSET(avcintra_class),AV_OPT_TYPE_INT,     { .i64 = -1 }, -1, 200   , VE},

  978.     { "motion-est",   "Set motion estimation method",                     OFFSET(motion_est),    AV_OPT_TYPE_INT,    { .i64 = -1 }, -1, X264_ME_TESA, VE, "motion-est"},

  979.     { "dia",           NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_DIA },  INT_MIN, INT_MAX, VE, "motion-est" },

  980.     { "hex",           NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_HEX },  INT_MIN, INT_MAX, VE, "motion-est" },

  981.     { "umh",           NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_UMH },  INT_MIN, INT_MAX, VE, "motion-est" },

  982.     { "esa",           NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_ESA },  INT_MIN, INT_MAX, VE, "motion-est" },

  983.     { "tesa",          NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },

  984.     { "forced-idr",   "If forcing keyframes, force them as IDR frames.",                                  OFFSET(forced_idr),  AV_OPT_TYPE_BOOL,   { .i64 = -1 }, -1, 1, VE },

  985.     { "coder",    "Coder type",                                           OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },

  986.     { "default",          NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },

  987.     { "cavlc",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 },  INT_MIN, INT_MAX, VE, "coder" },

  988.     { "cabac",            NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 },  INT_MIN, INT_MAX, VE, "coder" },

  989.     { "vlc",              NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 },  INT_MIN, INT_MAX, VE, "coder" },

  990.     { "ac",               NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 },  INT_MIN, INT_MAX, VE, "coder" },

  991.     { "b_strategy",   "Strategy to choose between I/P/B-frames",          OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, VE },

  992.     { "chromaoffset", "QP difference between chroma and luma",           OFFSET(chroma_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },

  993.     { "sc_threshold", "Scene change threshold",                           OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },

  994.     { "noise_reduction", "Noise reduction",                               OFFSET(noise_reduction), AV_OPT_TYPE_INT, { .i64 = -1 }, 0, INT_MAX, VE },

  995. 

  996.     { "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 },

  997.     { NULL },

  998. };

  999. 

  1000. static const AVCodecDefault x264_defaults[] = {

  1001.     { "b",                "0" },

  1002.     { "bf",               "-1" },

  1003.     { "flags2",           "0" },

  1004.     { "g",                "-1" },

  1005.     { "i_qfactor",        "-1" },

  1006.     { "b_qfactor",        "-1" },

  1007.     { "qmin",             "-1" },

  1008.     { "qmax",             "-1" },

  1009.     { "qdiff",            "-1" },

  1010.     { "qblur",            "-1" },

  1011.     { "qcomp",            "-1" },

  1012. //     { "rc_lookahead",     "-1" },

  1013.     { "refs",             "-1" },

  1014. #if FF_API_PRIVATE_OPT

  1015.     { "sc_threshold",     "-1" },

  1016. #endif

  1017.     { "trellis",          "-1" },

  1018. #if FF_API_PRIVATE_OPT

  1019.     { "nr",               "-1" },

  1020. #endif

  1021.     { "me_range",         "-1" },

  1022. #if FF_API_MOTION_EST

  1023.     { "me_method",        "-1" },

  1024. #endif

  1025.     { "subq",             "-1" },

  1026. #if FF_API_PRIVATE_OPT

  1027.     { "b_strategy",       "-1" },

  1028. #endif

  1029.     { "keyint_min",       "-1" },

  1030. #if FF_API_CODER_TYPE

  1031.     { "coder",            "-1" },

  1032. #endif

  1033.     { "cmp",              "-1" },

  1034.     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },

  1035.     { "thread_type",      "0" },

  1036.     { "flags",            "+cgop" },

  1037.     { "rc_init_occupancy","-1" },

  1038.     { NULL },

  1039. };

  1040. 

  1041. #if CONFIG_LIBX264_ENCODER

  1042. static const AVClass x264_class = {

  1043.     .class_name = "libx264",

  1044.     .item_name  = av_default_item_name,

  1045.     .option     = options,

  1046.     .version    = LIBAVUTIL_VERSION_INT,

  1047. };

  1048. 

  1049. static const AVClass rgbclass = {

  1050.     .class_name = "libx264rgb",

  1051.     .item_name  = av_default_item_name,

  1052.     .option     = options,

  1053.     .version    = LIBAVUTIL_VERSION_INT,

  1054. };

  1055. 

  1056. AVCodec ff_libx264_encoder = {

  1057.     .name             = "libx264",

  1058.     .long_name        = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),

  1059.     .type             = AVMEDIA_TYPE_VIDEO,

  1060.     .id               = AV_CODEC_ID_H264,

  1061.     .priv_data_size   = sizeof(X264Context),

  1062.     .init             = X264_init,

  1063.     .encode2          = X264_frame,

  1064.     .close            = X264_close,

  1065.     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,

  1066.     .priv_class       = &x264_class,

  1067.     .defaults         = x264_defaults,

  1068.     .init_static_data = X264_init_static,

  1069.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |

  1070.                         FF_CODEC_CAP_INIT_CLEANUP,

  1071. };

  1072. 

  1073. AVCodec ff_libx264rgb_encoder = {

  1074.     .name           = "libx264rgb",

  1075.     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),

  1076.     .type           = AVMEDIA_TYPE_VIDEO,

  1077.     .id             = AV_CODEC_ID_H264,

  1078.     .priv_data_size = sizeof(X264Context),

  1079.     .init           = X264_init,

  1080.     .encode2        = X264_frame,

  1081.     .close          = X264_close,

  1082.     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,

  1083.     .priv_class     = &rgbclass,

  1084.     .defaults       = x264_defaults,

  1085.     .pix_fmts       = pix_fmts_8bit_rgb,

  1086. };

  1087. #endif

  1088. 

  1089. #if CONFIG_LIBX262_ENCODER

  1090. static const AVClass X262_class = {

  1091.     .class_name = "libx262",

  1092.     .item_name  = av_default_item_name,

  1093.     .option     = options,

  1094.     .version    = LIBAVUTIL_VERSION_INT,

  1095. };

  1096. 

  1097. AVCodec ff_libx262_encoder = {

  1098.     .name             = "libx262",

  1099.     .long_name        = NULL_IF_CONFIG_SMALL("libx262 MPEG2VIDEO"),

  1100.     .type             = AVMEDIA_TYPE_VIDEO,

  1101.     .id               = AV_CODEC_ID_MPEG2VIDEO,

  1102.     .priv_data_size   = sizeof(X264Context),

  1103.     .init             = X264_init,

  1104.     .encode2          = X264_frame,

  1105.     .close            = X264_close,

  1106.     .capabilities     = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,

  1107.     .priv_class       = &X262_class,

  1108.     .defaults         = x264_defaults,

  1109.     .pix_fmts         = pix_fmts_8bit,

  1110.     .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |

  1111.                         FF_CODEC_CAP_INIT_CLEANUP,

  1112. };

  1113. #endif