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FFmpeg/libavcodec/libx264.c

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  1. /*

  2.  * H.264 encoding using the x264 library

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

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

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

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

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

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

  11.  *

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

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

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

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

  20.  */

  21. 

  22. #include "libavutil/opt.h"

  23. #include "libavutil/pixdesc.h"

  24. #include "avcodec.h"

  25. #include "internal.h"

  26. #include <x264.h>

  27. #include <float.h>

  28. #include <math.h>

  29. #include <stdio.h>

  30. #include <stdlib.h>

  31. #include <string.h>

  32. 

  33. typedef struct X264Context {

  34.     AVClass        *class;

  35.     x264_param_t    params;

  36.     x264_t         *enc;

  37.     x264_picture_t  pic;

  38.     uint8_t        *sei;

  39.     int             sei_size;

  40.     AVFrame         out_pic;

  41.     char *preset;

  42.     char *tune;

  43.     char *profile;

  44.     char *level;

  45.     int fastfirstpass;

  46.     char *stats;

  47.     char *wpredp;

  48.     char *x264opts;

  49.     float crf;

  50.     float crf_max;

  51.     int cqp;

  52.     int aq_mode;

  53.     float aq_strength;

  54.     char *psy_rd;

  55.     int psy;

  56.     int rc_lookahead;

  57.     int weightp;

  58.     int weightb;

  59.     int ssim;

  60.     int intra_refresh;

  61.     int b_bias;

  62.     int b_pyramid;

  63.     int mixed_refs;

  64.     int dct8x8;

  65.     int fast_pskip;

  66.     int aud;

  67.     int mbtree;

  68.     char *deblock;

  69.     float cplxblur;

  70.     char *partitions;

  71.     int direct_pred;

  72.     int slice_max_size;

  73. } X264Context;

  74. 

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

  76. {

  77.     static const int level_map[] = {

  78.         [X264_LOG_ERROR]   = AV_LOG_ERROR,

  79.         [X264_LOG_WARNING] = AV_LOG_WARNING,

  80.         [X264_LOG_INFO]    = AV_LOG_INFO,

  81.         [X264_LOG_DEBUG]   = AV_LOG_DEBUG

  82.     };

  83. 

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

  85.         return;

  86. 

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

  88. }

  89. 

  90. 

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

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

  93. {

  94.     X264Context *x4 = ctx->priv_data;

  95.     uint8_t *p = buf;

  96.     int i;

  97. 

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

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

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

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

  102.             return -1;

  103.         }

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

  105.         p += x4->sei_size;

  106.         x4->sei_size = 0;

  107.         av_freep(&x4->sei);

  108.     }

  109. 

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

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

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

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

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

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

  116.             continue;

  117.         }

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

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

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

  121.             break;

  122.         }

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

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

  125.     }

  126. 

  127.     return p - buf;

  128. }

  129. 

  130. static int avfmt2_num_planes(int avfmt)

  131. {

  132.     switch (avfmt) {

  133.     case PIX_FMT_YUV420P:

  134.     case PIX_FMT_YUVJ420P:

  135.     case PIX_FMT_YUV420P9:

  136.     case PIX_FMT_YUV420P10:

  137.     case PIX_FMT_YUV444P:

  138.         return 3;

  139. 

  140.     case PIX_FMT_BGR24:

  141.     case PIX_FMT_RGB24:

  142.         return 1;

  143. 

  144.     default:

  145.         return 3;

  146.     }

  147. }

  148. 

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

  150.                       int orig_bufsize, void *data)

  151. {

  152.     X264Context *x4 = ctx->priv_data;

  153.     AVFrame *frame = data;

  154.     x264_nal_t *nal;

  155.     int nnal, i;

  156.     x264_picture_t pic_out;

  157.     int bufsize;

  158. 

  159.     x264_picture_init( &x4->pic );

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

  161.     if (x264_bit_depth > 8)

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

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

  164. 

  165.     if (frame) {

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

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

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

  169.         }

  170. 

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

  172.         x4->pic.i_type =

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

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

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

  176.                                             X264_TYPE_AUTO;

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

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

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

  180.         }

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

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

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

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

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

  186.         }

  187.     }

  188. 

  189.     do {

  190.         bufsize = orig_bufsize;

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

  192.         return -1;

  193. 

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

  195.     if (bufsize < 0)

  196.         return -1;

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

  198. 

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

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

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

  217.     if (bufsize)

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

  219. 

  220.     return bufsize;

  221. }

  222. 

  223. static av_cold int X264_close(AVCodecContext *avctx)

  224. {

  225.     X264Context *x4 = avctx->priv_data;

  226. 

  227.     av_freep(&avctx->extradata);

  228.     av_free(x4->sei);

  229. 

  230.     if (x4->enc)

  231.         x264_encoder_close(x4->enc);

  232. 

  233.     return 0;

  234. }

  235. 

  236. #define OPT_STR(opt, param)                                                   \

  237.     do {                                                                      \

  238.         int ret;                                                              \

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

  240.             if(ret == X264_PARAM_BAD_NAME)                                    \

  241.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  243.             else                                                              \

  244.                 av_log(avctx, AV_LOG_ERROR,                                   \

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

  246.             return -1;                                                        \

  247.         }                                                                     \

  248.     } while (0)

  249. 

  250. static int convert_pix_fmt(enum PixelFormat pix_fmt)

  251. {

  252.     switch (pix_fmt) {

  253.     case PIX_FMT_YUV420P:

  254.     case PIX_FMT_YUVJ420P:

  255.     case PIX_FMT_YUV420P9:

  256.     case PIX_FMT_YUV420P10: return X264_CSP_I420;

  257.     case PIX_FMT_YUV422P:

  258.     case PIX_FMT_YUV422P10: return X264_CSP_I422;

  259.     case PIX_FMT_YUV444P:

  260.     case PIX_FMT_YUV444P9:

  261.     case PIX_FMT_YUV444P10: return X264_CSP_I444;

  262. #ifdef X264_CSP_BGR

  263.     case PIX_FMT_BGR24:

  264.         return X264_CSP_BGR;

  265. 

  266.     case PIX_FMT_RGB24:

  267.         return X264_CSP_RGB;

  268. #endif

  269.     };

  270.     return 0;

  271. }

  272. 

  273. #define PARSE_X264_OPT(name, var)\

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

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

  276.         return AVERROR(EINVAL);\

  277.     }

  278. 

  279. static av_cold int X264_init(AVCodecContext *avctx)

  280. {

  281.     X264Context *x4 = avctx->priv_data;

  282.     int sw,sh;

  283. 

  284.     x264_param_default(&x4->params);

  285. 

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

  287. 

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

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

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

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

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

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

  294.             return AVERROR(EINVAL);

  295.         }

  296. 

  297.     if (avctx->level > 0)

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

  299. 

  300.     x4->params.pf_log               = X264_log;

  301.     x4->params.p_log_private        = avctx;

  302.     x4->params.i_log_level          = X264_LOG_DEBUG;

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

  304. 

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

  306. 

  307.     if (avctx->bit_rate) {

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

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

  310.     }

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

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

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

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

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

  316.     } else {

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

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

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

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

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

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

  323.         }

  324. 

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

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

  327.     }

  328. 

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

  330. 

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

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

  333.         x4->params.rc.f_vbv_buffer_init =

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

  335.     }

  336. 

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

  338. 

  339.     if(x4->x264opts){

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

  341.         while(p){

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

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

  344.                 OPT_STR(param, "1");

  345.             }else

  346.                 OPT_STR(param, val);

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

  348.             p+=!!p;

  349.         }

  350.     }

  351. 

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

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

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

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

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

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

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

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

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

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

  362. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  397. 

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

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

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

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

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

  403.     PARSE_X264_OPT("deblock", deblock);

  404.     PARSE_X264_OPT("partitions", partitions);

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

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

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

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

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

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

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

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

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

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

  415. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  436. 

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

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

  439. 

  440.     if (x4->fastfirstpass)

  441.         x264_param_apply_fastfirstpass(&x4->params);

  442. 

  443.     if (x4->profile)

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

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

  446.             return AVERROR(EINVAL);

  447.         }

  448. 

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

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

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

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

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

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

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

  456. 

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

  458. 

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

  460. 

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

  462. 

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

  464. 

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

  466. 

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

  468. 

  469.     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)

  470.         x4->params.b_repeat_headers = 0;

  471. 

  472.     // update AVCodecContext with x264 parameters

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

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

  475.     if (avctx->max_b_frames < 0)

  476.         avctx->max_b_frames = 0;

  477. 

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

  479. 

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

  481.     if (!x4->enc)

  482.         return -1;

  483. 

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

  485. 

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

  487.         x264_nal_t *nal;

  488.         int nnal, s, i;

  489. 

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

  491. 

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

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

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

  495. 

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

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

  498.     }

  499. 

  500.     return 0;

  501. }

  502. 

  503. static const enum PixelFormat pix_fmts_8bit[] = {

  504.     PIX_FMT_YUV420P,

  505.     PIX_FMT_YUVJ420P,

  506.     PIX_FMT_YUV422P,

  507.     PIX_FMT_YUV444P,

  508.     PIX_FMT_NONE

  509. };

  510. static const enum PixelFormat pix_fmts_9bit[] = {

  511.     PIX_FMT_YUV420P9,

  512.     PIX_FMT_YUV444P9,

  513.     PIX_FMT_NONE

  514. };

  515. static const enum PixelFormat pix_fmts_10bit[] = {

  516.     PIX_FMT_YUV420P10,

  517.     PIX_FMT_YUV422P10,

  518.     PIX_FMT_YUV444P10,

  519.     PIX_FMT_NONE

  520. };

  521. static const enum PixelFormat pix_fmts_8bit_rgb[] = {

  522. #ifdef X264_CSP_BGR

  523.     PIX_FMT_BGR24,

  524.     PIX_FMT_RGB24,

  525. #endif

  526.     PIX_FMT_NONE

  527. };

  528. 

  529. static av_cold void X264_init_static(AVCodec *codec)

  530. {

  531.     if (x264_bit_depth == 8)

  532.         codec->pix_fmts = pix_fmts_8bit;

  533.     else if (x264_bit_depth == 9)

  534.         codec->pix_fmts = pix_fmts_9bit;

  535.     else if (x264_bit_depth == 10)

  536.         codec->pix_fmts = pix_fmts_10bit;

  537. }

  538. 

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

  540. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  541. static const AVOption options[] = {

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

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

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

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

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

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

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

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

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

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

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

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

  554.     { "none",          NULL,                              0, AV_OPT_TYPE_CONST, {X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },

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

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

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

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

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

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

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

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

  563.     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },

  564.     { "simple",        NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },

  565.     { "smart",         NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },

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

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

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

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

  570.     { "none",          NULL,                                  0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },

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

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

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

  574.     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},

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

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

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

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

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

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

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

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

  583.     { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },

  584.     { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },

  585.     { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },

  586.     { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },

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

  588.     { NULL },

  589. };

  590. 

  591. static const AVClass class = {

  592.     .class_name = "libx264",

  593.     .item_name  = av_default_item_name,

  594.     .option     = options,

  595.     .version    = LIBAVUTIL_VERSION_INT,

  596. };

  597. 

  598. static const AVClass rgbclass = {

  599.     .class_name = "libx264rgb",

  600.     .item_name  = av_default_item_name,

  601.     .option     = options,

  602.     .version    = LIBAVUTIL_VERSION_INT,

  603. };

  604. 

  605. static const AVCodecDefault x264_defaults[] = {

  606.     { "b",                "0" },

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

  608.     { "flags2",           "0" },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  628.     { NULL },

  629. };

  630. 

  631. AVCodec ff_libx264_encoder = {

  632.     .name           = "libx264",

  633.     .type           = AVMEDIA_TYPE_VIDEO,

  634.     .id             = CODEC_ID_H264,

  635.     .priv_data_size = sizeof(X264Context),

  636.     .init           = X264_init,

  637.     .encode         = X264_frame,

  638.     .close          = X264_close,

  639.     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,

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

  641.     .priv_class     = &class,

  642.     .defaults       = x264_defaults,

  643.     .init_static_data = X264_init_static,

  644. };

  645. 

  646. AVCodec ff_libx264rgb_encoder = {

  647.     .name           = "libx264rgb",

  648.     .type           = AVMEDIA_TYPE_VIDEO,

  649.     .id             = CODEC_ID_H264,

  650.     .priv_data_size = sizeof(X264Context),

  651.     .init           = X264_init,

  652.     .encode         = X264_frame,

  653.     .close          = X264_close,

  654.     .capabilities   = CODEC_CAP_DELAY,

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

  656.     .priv_class     = &rgbclass,

  657.     .defaults       = x264_defaults,

  658.     .pix_fmts       = pix_fmts_8bit_rgb,

  659. };