FFmpeg: libavcodec/libx264.c Source File

00001 /*
00002  * H.264 encoding using the x264 library
00003  * Copyright (C) 2005  Mans Rullgard <mans@mansr.com>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #include "libavutil/opt.h"
00023 #include "libavutil/pixdesc.h"
00024 #include "avcodec.h"
00025 #include "internal.h"
00026 #include <x264.h>
00027 #include <float.h>
00028 #include <math.h>
00029 #include <stdio.h>
00030 #include <stdlib.h>
00031 #include <string.h>
00032 
00033 typedef struct X264Context {
00034     AVClass        *class;
00035     x264_param_t    params;
00036     x264_t         *enc;
00037     x264_picture_t  pic;
00038     uint8_t        *sei;
00039     int             sei_size;
00040     AVFrame         out_pic;
00041     char *preset;
00042     char *tune;
00043     char *profile;
00044     char *level;
00045     int fastfirstpass;
00046     char *wpredp;
00047     char *x264opts;
00048     float crf;
00049     float crf_max;
00050     int cqp;
00051     int aq_mode;
00052     float aq_strength;
00053     char *psy_rd;
00054     int psy;
00055     int rc_lookahead;
00056     int weightp;
00057     int weightb;
00058     int ssim;
00059     int intra_refresh;
00060     int b_bias;
00061     int b_pyramid;
00062     int mixed_refs;
00063     int dct8x8;
00064     int fast_pskip;
00065     int aud;
00066     int mbtree;
00067     char *deblock;
00068     float cplxblur;
00069     char *partitions;
00070     int direct_pred;
00071     int slice_max_size;
00072     char *stats;
00073 } X264Context;
00074 
00075 static void X264_log(void *p, int level, const char *fmt, va_list args)
00076 {
00077     static const int level_map[] = {
00078         [X264_LOG_ERROR]   = AV_LOG_ERROR,
00079         [X264_LOG_WARNING] = AV_LOG_WARNING,
00080         [X264_LOG_INFO]    = AV_LOG_INFO,
00081         [X264_LOG_DEBUG]   = AV_LOG_DEBUG
00082     };
00083 
00084     if (level < 0 || level > X264_LOG_DEBUG)
00085         return;
00086 
00087     av_vlog(p, level_map[level], fmt, args);
00088 }
00089 
00090 
00091 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
00092                        x264_nal_t *nals, int nnal)
00093 {
00094     X264Context *x4 = ctx->priv_data;
00095     uint8_t *p;
00096     int i, size = x4->sei_size, ret;
00097 
00098     if (!nnal)
00099         return 0;
00100 
00101     for (i = 0; i < nnal; i++)
00102         size += nals[i].i_payload;
00103 
00104     if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
00105         return ret;
00106 
00107     p = pkt->data;
00108 
00109     /* Write the SEI as part of the first frame. */
00110     if (x4->sei_size > 0 && nnal > 0) {
00111         if (x4->sei_size > size) {
00112             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
00113             return -1;
00114         }
00115         memcpy(p, x4->sei, x4->sei_size);
00116         p += x4->sei_size;
00117         x4->sei_size = 0;
00118         av_freep(&x4->sei);
00119     }
00120 
00121     for (i = 0; i < nnal; i++){
00122         memcpy(p, nals[i].p_payload, nals[i].i_payload);
00123         p += nals[i].i_payload;
00124     }
00125 
00126     return 1;
00127 }
00128 
00129 static int avfmt2_num_planes(int avfmt)
00130 {
00131     switch (avfmt) {
00132     case PIX_FMT_YUV420P:
00133     case PIX_FMT_YUVJ420P:
00134     case PIX_FMT_YUV420P9:
00135     case PIX_FMT_YUV420P10:
00136     case PIX_FMT_YUV444P:
00137         return 3;
00138 
00139     case PIX_FMT_BGR24:
00140     case PIX_FMT_RGB24:
00141         return 1;
00142 
00143     default:
00144         return 3;
00145     }
00146 }
00147 
00148 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
00149                       int *got_packet)
00150 {
00151     X264Context *x4 = ctx->priv_data;
00152     x264_nal_t *nal;
00153     int nnal, i, ret;
00154     x264_picture_t pic_out;
00155 
00156     x264_picture_init( &x4->pic );
00157     x4->pic.img.i_csp   = x4->params.i_csp;
00158     if (x264_bit_depth > 8)
00159         x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
00160     x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
00161 
00162     if (frame) {
00163         for (i = 0; i < x4->pic.img.i_plane; i++) {
00164             x4->pic.img.plane[i]    = frame->data[i];
00165             x4->pic.img.i_stride[i] = frame->linesize[i];
00166         }
00167 
00168         x4->pic.i_pts  = frame->pts;
00169         x4->pic.i_type =
00170             frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
00171             frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
00172             frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
00173                                             X264_TYPE_AUTO;
00174         if (x4->params.b_tff != frame->top_field_first) {
00175             x4->params.b_tff = frame->top_field_first;
00176             x264_encoder_reconfig(x4->enc, &x4->params);
00177         }
00178         if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den
00179          || x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
00180             x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
00181             x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
00182             x264_encoder_reconfig(x4->enc, &x4->params);
00183         }
00184     }
00185 
00186     do {
00187         if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
00188             return -1;
00189 
00190         ret = encode_nals(ctx, pkt, nal, nnal);
00191         if (ret < 0)
00192             return -1;
00193     } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
00194 
00195     pkt->pts = pic_out.i_pts;
00196     pkt->dts = pic_out.i_dts;
00197 
00198     switch (pic_out.i_type) {
00199     case X264_TYPE_IDR:
00200     case X264_TYPE_I:
00201         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
00202         break;
00203     case X264_TYPE_P:
00204         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
00205         break;
00206     case X264_TYPE_B:
00207     case X264_TYPE_BREF:
00208         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
00209         break;
00210     }
00211 
00212     pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
00213     if (ret)
00214         x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00215 
00216     *got_packet = ret;
00217     return 0;
00218 }
00219 
00220 static av_cold int X264_close(AVCodecContext *avctx)
00221 {
00222     X264Context *x4 = avctx->priv_data;
00223 
00224     av_freep(&avctx->extradata);
00225     av_free(x4->sei);
00226 
00227     if (x4->enc)
00228         x264_encoder_close(x4->enc);
00229 
00230     return 0;
00231 }
00232 
00233 #define OPT_STR(opt, param)                                                   \
00234     do {                                                                      \
00235         int ret;                                                              \
00236         if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
00237             if(ret == X264_PARAM_BAD_NAME)                                    \
00238                 av_log(avctx, AV_LOG_ERROR,                                   \
00239                         "bad option '%s': '%s'\n", opt, param);               \
00240             else                                                              \
00241                 av_log(avctx, AV_LOG_ERROR,                                   \
00242                         "bad value for '%s': '%s'\n", opt, param);            \
00243             return -1;                                                        \
00244         }                                                                     \
00245     } while (0)
00246 
00247 static int convert_pix_fmt(enum PixelFormat pix_fmt)
00248 {
00249     switch (pix_fmt) {
00250     case PIX_FMT_YUV420P:
00251     case PIX_FMT_YUVJ420P:
00252     case PIX_FMT_YUV420P9:
00253     case PIX_FMT_YUV420P10: return X264_CSP_I420;
00254     case PIX_FMT_YUV422P:
00255     case PIX_FMT_YUV422P10: return X264_CSP_I422;
00256     case PIX_FMT_YUV444P:
00257     case PIX_FMT_YUV444P9:
00258     case PIX_FMT_YUV444P10: return X264_CSP_I444;
00259 #ifdef X264_CSP_BGR
00260     case PIX_FMT_BGR24:
00261         return X264_CSP_BGR;
00262 
00263     case PIX_FMT_RGB24:
00264         return X264_CSP_RGB;
00265 #endif
00266     };
00267     return 0;
00268 }
00269 
00270 #define PARSE_X264_OPT(name, var)\
00271     if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
00272         av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
00273         return AVERROR(EINVAL);\
00274     }
00275 
00276 static av_cold int X264_init(AVCodecContext *avctx)
00277 {
00278     X264Context *x4 = avctx->priv_data;
00279     int sw,sh;
00280 
00281     x264_param_default(&x4->params);
00282 
00283     x4->params.b_deblocking_filter         = avctx->flags & CODEC_FLAG_LOOP_FILTER;
00284 
00285     x4->params.rc.f_ip_factor             = 1 / fabs(avctx->i_quant_factor);
00286     x4->params.rc.f_pb_factor             = avctx->b_quant_factor;
00287     x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00288     if (x4->preset || x4->tune)
00289         if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
00290             av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
00291             return AVERROR(EINVAL);
00292         }
00293 
00294     if (avctx->level > 0)
00295         x4->params.i_level_idc = avctx->level;
00296 
00297     x4->params.pf_log               = X264_log;
00298     x4->params.p_log_private        = avctx;
00299     x4->params.i_log_level          = X264_LOG_DEBUG;
00300     x4->params.i_csp                = convert_pix_fmt(avctx->pix_fmt);
00301 
00302     OPT_STR("weightp", x4->wpredp);
00303 
00304     if (avctx->bit_rate) {
00305         x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;
00306         x4->params.rc.i_rc_method = X264_RC_ABR;
00307     }
00308     x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00309     x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;
00310     x4->params.rc.b_stat_write      = avctx->flags & CODEC_FLAG_PASS1;
00311     if (avctx->flags & CODEC_FLAG_PASS2) {
00312         x4->params.rc.b_stat_read = 1;
00313     } else {
00314         if (x4->crf >= 0) {
00315             x4->params.rc.i_rc_method   = X264_RC_CRF;
00316             x4->params.rc.f_rf_constant = x4->crf;
00317         } else if (x4->cqp >= 0) {
00318             x4->params.rc.i_rc_method   = X264_RC_CQP;
00319             x4->params.rc.i_qp_constant = x4->cqp;
00320         }
00321 
00322         if (x4->crf_max >= 0)
00323             x4->params.rc.f_rf_constant_max = x4->crf_max;
00324     }
00325 
00326     if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
00327         (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00328         x4->params.rc.f_vbv_buffer_init =
00329             (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00330     }
00331 
00332     OPT_STR("level", x4->level);
00333 
00334     if(x4->x264opts){
00335         const char *p= x4->x264opts;
00336         while(p){
00337             char param[256]={0}, val[256]={0};
00338             if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
00339                 OPT_STR(param, "1");
00340             }else
00341                 OPT_STR(param, val);
00342             p= strchr(p, ':');
00343             p+=!!p;
00344         }
00345     }
00346 
00347     if (avctx->me_method == ME_EPZS)
00348         x4->params.analyse.i_me_method = X264_ME_DIA;
00349     else if (avctx->me_method == ME_HEX)
00350         x4->params.analyse.i_me_method = X264_ME_HEX;
00351     else if (avctx->me_method == ME_UMH)
00352         x4->params.analyse.i_me_method = X264_ME_UMH;
00353     else if (avctx->me_method == ME_FULL)
00354         x4->params.analyse.i_me_method = X264_ME_ESA;
00355     else if (avctx->me_method == ME_TESA)
00356         x4->params.analyse.i_me_method = X264_ME_TESA;
00357 
00358     if (avctx->gop_size >= 0)
00359         x4->params.i_keyint_max         = avctx->gop_size;
00360     if (avctx->max_b_frames >= 0)
00361         x4->params.i_bframe             = avctx->max_b_frames;
00362     if (avctx->scenechange_threshold >= 0)
00363         x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00364     if (avctx->qmin >= 0)
00365         x4->params.rc.i_qp_min          = avctx->qmin;
00366     if (avctx->qmax >= 0)
00367         x4->params.rc.i_qp_max          = avctx->qmax;
00368     if (avctx->max_qdiff >= 0)
00369         x4->params.rc.i_qp_step         = avctx->max_qdiff;
00370     if (avctx->qblur >= 0)
00371         x4->params.rc.f_qblur           = avctx->qblur;     /* temporally blur quants */
00372     if (avctx->qcompress >= 0)
00373         x4->params.rc.f_qcompress       = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
00374     if (avctx->refs >= 0)
00375         x4->params.i_frame_reference    = avctx->refs;
00376     if (avctx->trellis >= 0)
00377         x4->params.analyse.i_trellis    = avctx->trellis;
00378     if (avctx->me_range >= 0)
00379         x4->params.analyse.i_me_range   = avctx->me_range;
00380     if (avctx->noise_reduction >= 0)
00381         x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00382     if (avctx->me_subpel_quality >= 0)
00383         x4->params.analyse.i_subpel_refine   = avctx->me_subpel_quality;
00384     if (avctx->b_frame_strategy >= 0)
00385         x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00386     if (avctx->keyint_min >= 0)
00387         x4->params.i_keyint_min = avctx->keyint_min;
00388     if (avctx->coder_type >= 0)
00389         x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
00390     if (avctx->me_cmp >= 0)
00391         x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00392 
00393     if (x4->aq_mode >= 0)
00394         x4->params.rc.i_aq_mode = x4->aq_mode;
00395     if (x4->aq_strength >= 0)
00396         x4->params.rc.f_aq_strength = x4->aq_strength;
00397     PARSE_X264_OPT("psy-rd", psy_rd);
00398     PARSE_X264_OPT("deblock", deblock);
00399     PARSE_X264_OPT("partitions", partitions);
00400     PARSE_X264_OPT("stats", stats);
00401     if (x4->psy >= 0)
00402         x4->params.analyse.b_psy  = x4->psy;
00403     if (x4->rc_lookahead >= 0)
00404         x4->params.rc.i_lookahead = x4->rc_lookahead;
00405     if (x4->weightp >= 0)
00406         x4->params.analyse.i_weighted_pred = x4->weightp;
00407     if (x4->weightb >= 0)
00408         x4->params.analyse.b_weighted_bipred = x4->weightb;
00409     if (x4->cplxblur >= 0)
00410         x4->params.rc.f_complexity_blur = x4->cplxblur;
00411 
00412     if (x4->ssim >= 0)
00413         x4->params.analyse.b_ssim = x4->ssim;
00414     if (x4->intra_refresh >= 0)
00415         x4->params.b_intra_refresh = x4->intra_refresh;
00416     if (x4->b_bias != INT_MIN)
00417         x4->params.i_bframe_bias              = x4->b_bias;
00418     if (x4->b_pyramid >= 0)
00419         x4->params.i_bframe_pyramid = x4->b_pyramid;
00420     if (x4->mixed_refs >= 0)
00421         x4->params.analyse.b_mixed_references = x4->mixed_refs;
00422     if (x4->dct8x8 >= 0)
00423         x4->params.analyse.b_transform_8x8    = x4->dct8x8;
00424     if (x4->fast_pskip >= 0)
00425         x4->params.analyse.b_fast_pskip       = x4->fast_pskip;
00426     if (x4->aud >= 0)
00427         x4->params.b_aud                      = x4->aud;
00428     if (x4->mbtree >= 0)
00429         x4->params.rc.b_mb_tree               = x4->mbtree;
00430     if (x4->direct_pred >= 0)
00431         x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;
00432 
00433     if (x4->slice_max_size >= 0)
00434         x4->params.i_slice_max_size =  x4->slice_max_size;
00435 
00436     if (x4->fastfirstpass)
00437         x264_param_apply_fastfirstpass(&x4->params);
00438 
00439     if (x4->profile)
00440         if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
00441             av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
00442             return AVERROR(EINVAL);
00443         }
00444 
00445     x4->params.i_width          = avctx->width;
00446     x4->params.i_height         = avctx->height;
00447     av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
00448     x4->params.vui.i_sar_width  = sw;
00449     x4->params.vui.i_sar_height = sh;
00450     x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
00451     x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
00452 
00453     x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00454 
00455     x4->params.i_threads      = avctx->thread_count;
00456     if (avctx->thread_type)
00457         x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
00458 
00459     x4->params.b_interlaced   = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00460 
00461 //    x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
00462 
00463     x4->params.i_slice_count  = avctx->slices;
00464 
00465     x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;
00466 
00467     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00468         x4->params.b_repeat_headers = 0;
00469 
00470     // update AVCodecContext with x264 parameters
00471     avctx->has_b_frames = x4->params.i_bframe ?
00472         x4->params.i_bframe_pyramid ? 2 : 1 : 0;
00473     if (avctx->max_b_frames < 0)
00474         avctx->max_b_frames = 0;
00475 
00476     avctx->bit_rate = x4->params.rc.i_bitrate*1000;
00477 
00478     x4->enc = x264_encoder_open(&x4->params);
00479     if (!x4->enc)
00480         return -1;
00481 
00482     avctx->coded_frame = &x4->out_pic;
00483 
00484     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00485         x264_nal_t *nal;
00486         uint8_t *p;
00487         int nnal, s, i;
00488 
00489         s = x264_encoder_headers(x4->enc, &nal, &nnal);
00490         avctx->extradata = p = av_malloc(s);
00491 
00492         for (i = 0; i < nnal; i++) {
00493             /* Don't put the SEI in extradata. */
00494             if (nal[i].i_type == NAL_SEI) {
00495                 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
00496                 x4->sei_size = nal[i].i_payload;
00497                 x4->sei      = av_malloc(x4->sei_size);
00498                 memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
00499                 continue;
00500             }
00501             memcpy(p, nal[i].p_payload, nal[i].i_payload);
00502             p += nal[i].i_payload;
00503         }
00504         avctx->extradata_size = p - avctx->extradata;
00505     }
00506 
00507     return 0;
00508 }
00509 
00510 static const enum PixelFormat pix_fmts_8bit[] = {
00511     PIX_FMT_YUV420P,
00512     PIX_FMT_YUVJ420P,
00513     PIX_FMT_YUV422P,
00514     PIX_FMT_YUV444P,
00515     PIX_FMT_NONE
00516 };
00517 static const enum PixelFormat pix_fmts_9bit[] = {
00518     PIX_FMT_YUV420P9,
00519     PIX_FMT_YUV444P9,
00520     PIX_FMT_NONE
00521 };
00522 static const enum PixelFormat pix_fmts_10bit[] = {
00523     PIX_FMT_YUV420P10,
00524     PIX_FMT_YUV422P10,
00525     PIX_FMT_YUV444P10,
00526     PIX_FMT_NONE
00527 };
00528 static const enum PixelFormat pix_fmts_8bit_rgb[] = {
00529 #ifdef X264_CSP_BGR
00530     PIX_FMT_BGR24,
00531     PIX_FMT_RGB24,
00532 #endif
00533     PIX_FMT_NONE
00534 };
00535 
00536 static av_cold void X264_init_static(AVCodec *codec)
00537 {
00538     if (x264_bit_depth == 8)
00539         codec->pix_fmts = pix_fmts_8bit;
00540     else if (x264_bit_depth == 9)
00541         codec->pix_fmts = pix_fmts_9bit;
00542     else if (x264_bit_depth == 10)
00543         codec->pix_fmts = pix_fmts_10bit;
00544 }
00545 
00546 #define OFFSET(x) offsetof(X264Context, x)
00547 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
00548 static const AVOption options[] = {
00549     { "preset",        "Set the encoding preset (cf. x264 --fullhelp)",   OFFSET(preset),        AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
00550     { "tune",          "Tune the encoding params (cf. x264 --fullhelp)",  OFFSET(tune),          AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00551     { "profile",       "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile),       AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00552     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), AV_OPT_TYPE_INT,    { 1 }, 0, 1, VE},
00553     {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00554     {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00555     {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00556     {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00557     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE },
00558     { "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 },
00559     { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },
00560     { "aq-mode",       "AQ method",                                       OFFSET(aq_mode),       AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "aq_mode"},
00561     { "none",          NULL,                              0, AV_OPT_TYPE_CONST, {X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },
00562     { "variance",      "Variance AQ (complexity mask)",   0, AV_OPT_TYPE_CONST, {X264_AQ_VARIANCE},     INT_MIN, INT_MAX, VE, "aq_mode" },
00563     { "autovariance",  "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
00564     { "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},
00565     { "psy",           "Use psychovisual optimizations.",                 OFFSET(psy),           AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00566     { "psy-rd",        "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING,  {0 }, 0, 0, VE},
00567     { "rc-lookahead",  "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
00568     { "weightb",       "Weighted prediction for B-frames.",               OFFSET(weightb),       AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00569     { "weightp",       "Weighted prediction analysis method.",            OFFSET(weightp),       AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "weightp" },
00570     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },
00571     { "simple",        NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
00572     { "smart",         NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },
00573     { "ssim",          "Calculate and print SSIM stats.",                 OFFSET(ssim),          AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00574     { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00575     { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    {INT_MIN}, INT_MIN, INT_MAX, VE },
00576     { "b-pyramid",     "Keep some B-frames as references.",               OFFSET(b_pyramid),     AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "b_pyramid" },
00577     { "none",          NULL,                                  0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },
00578     { "strict",        "Strictly hierarchical pyramid",       0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
00579     { "normal",        "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
00580     { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE },
00581     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00582     { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00583     { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00584     { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00585     { "deblock",       "Loop filter parameters, in <alpha:beta> form.",   OFFSET(deblock),       AV_OPT_TYPE_STRING, { 0 },  0, 0, VE},
00586     { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE},
00587     { "partitions",    "A comma-separated list of partitions to consider. "
00588                        "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00589     { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "direct-pred" },
00590     { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },
00591     { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },
00592     { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
00593     { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },
00594     { "slice-max-size","Limit the size of each slice in bytes",           OFFSET(slice_max_size),AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },
00595     { "stats",         "Filename for 2 pass stats",                       OFFSET(stats),         AV_OPT_TYPE_STRING, { 0 },  0,       0, VE },
00596     { NULL },
00597 };
00598 
00599 static const AVClass class = {
00600     .class_name = "libx264",
00601     .item_name  = av_default_item_name,
00602     .option     = options,
00603     .version    = LIBAVUTIL_VERSION_INT,
00604 };
00605 
00606 static const AVClass rgbclass = {
00607     .class_name = "libx264rgb",
00608     .item_name  = av_default_item_name,
00609     .option     = options,
00610     .version    = LIBAVUTIL_VERSION_INT,
00611 };
00612 
00613 static const AVCodecDefault x264_defaults[] = {
00614     { "b",                "0" },
00615     { "bf",               "-1" },
00616     { "flags2",           "0" },
00617     { "g",                "-1" },
00618     { "qmin",             "-1" },
00619     { "qmax",             "-1" },
00620     { "qdiff",            "-1" },
00621     { "qblur",            "-1" },
00622     { "qcomp",            "-1" },
00623 //     { "rc_lookahead",     "-1" },
00624     { "refs",             "-1" },
00625     { "sc_threshold",     "-1" },
00626     { "trellis",          "-1" },
00627     { "nr",               "-1" },
00628     { "me_range",         "-1" },
00629     { "me_method",        "-1" },
00630     { "subq",             "-1" },
00631     { "b_strategy",       "-1" },
00632     { "keyint_min",       "-1" },
00633     { "coder",            "-1" },
00634     { "cmp",              "-1" },
00635     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },
00636     { "thread_type",      "0" },
00637     { NULL },
00638 };
00639 
00640 AVCodec ff_libx264_encoder = {
00641     .name             = "libx264",
00642     .type             = AVMEDIA_TYPE_VIDEO,
00643     .id               = CODEC_ID_H264,
00644     .priv_data_size   = sizeof(X264Context),
00645     .init             = X264_init,
00646     .encode2          = X264_frame,
00647     .close            = X264_close,
00648     .capabilities     = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
00649     .long_name        = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
00650     .priv_class       = &class,
00651     .defaults         = x264_defaults,
00652     .init_static_data = X264_init_static,
00653 };
00654 
00655 AVCodec ff_libx264rgb_encoder = {
00656     .name           = "libx264rgb",
00657     .type           = AVMEDIA_TYPE_VIDEO,
00658     .id             = CODEC_ID_H264,
00659     .priv_data_size = sizeof(X264Context),
00660     .init           = X264_init,
00661     .encode2        = X264_frame,
00662     .close          = X264_close,
00663     .capabilities   = CODEC_CAP_DELAY,
00664     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
00665     .priv_class     = &rgbclass,
00666     .defaults       = x264_defaults,
00667     .pix_fmts       = pix_fmts_8bit_rgb,
00668 };