• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavcodec/libx264.c

Go to the documentation of this 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 *stats;
00047     char *wpredp;
00048     char *x264opts;
00049     float crf;
00050     float crf_max;
00051     int cqp;
00052     int aq_mode;
00053     float aq_strength;
00054     char *psy_rd;
00055     int psy;
00056     int rc_lookahead;
00057     int weightp;
00058     int weightb;
00059     int ssim;
00060     int intra_refresh;
00061     int b_bias;
00062     int b_pyramid;
00063     int mixed_refs;
00064     int dct8x8;
00065     int fast_pskip;
00066     int aud;
00067     int mbtree;
00068     char *deblock;
00069     float cplxblur;
00070     char *partitions;
00071     int direct_pred;
00072     int slice_max_size;
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, uint8_t *buf, int size,
00092                        x264_nal_t *nals, int nnal, int skip_sei)
00093 {
00094     X264Context *x4 = ctx->priv_data;
00095     uint8_t *p = buf;
00096     int i;
00097 
00098     /* Write the SEI as part of the first frame. */
00099     if (x4->sei_size > 0 && nnal > 0) {
00100         if (x4->sei_size > size) {
00101             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
00102             return -1;
00103         }
00104         memcpy(p, x4->sei, x4->sei_size);
00105         p += x4->sei_size;
00106         x4->sei_size = 0;
00107         av_freep(&x4->sei);
00108     }
00109 
00110     for (i = 0; i < nnal; i++){
00111         /* Don't put the SEI in extradata. */
00112         if (skip_sei && nals[i].i_type == NAL_SEI) {
00113             x4->sei_size = nals[i].i_payload;
00114             x4->sei      = av_malloc(x4->sei_size);
00115             memcpy(x4->sei, nals[i].p_payload, nals[i].i_payload);
00116             continue;
00117         }
00118         if (nals[i].i_payload > (size - (p - buf))) {
00119             // return only complete nals which fit in buf
00120             av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
00121             break;
00122         }
00123         memcpy(p, nals[i].p_payload, nals[i].i_payload);
00124         p += nals[i].i_payload;
00125     }
00126 
00127     return p - buf;
00128 }
00129 
00130 static int avfmt2_num_planes(int avfmt)
00131 {
00132     switch (avfmt) {
00133     case PIX_FMT_YUV420P:
00134     case PIX_FMT_YUVJ420P:
00135     case PIX_FMT_YUV420P9:
00136     case PIX_FMT_YUV420P10:
00137     case PIX_FMT_YUV444P:
00138         return 3;
00139 
00140     case PIX_FMT_BGR24:
00141     case PIX_FMT_RGB24:
00142         return 1;
00143 
00144     default:
00145         return 3;
00146     }
00147 }
00148 
00149 static int X264_frame(AVCodecContext *ctx, uint8_t *buf,
00150                       int orig_bufsize, void *data)
00151 {
00152     X264Context *x4 = ctx->priv_data;
00153     AVFrame *frame = data;
00154     x264_nal_t *nal;
00155     int nnal, i;
00156     x264_picture_t pic_out;
00157     int bufsize;
00158 
00159     x264_picture_init( &x4->pic );
00160     x4->pic.img.i_csp   = x4->params.i_csp;
00161     if (x264_bit_depth > 8)
00162         x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
00163     x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
00164 
00165     if (frame) {
00166         for (i = 0; i < x4->pic.img.i_plane; i++) {
00167             x4->pic.img.plane[i]    = frame->data[i];
00168             x4->pic.img.i_stride[i] = frame->linesize[i];
00169         }
00170 
00171         x4->pic.i_pts  = frame->pts;
00172         x4->pic.i_type =
00173             frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
00174             frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
00175             frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
00176                                             X264_TYPE_AUTO;
00177         if (x4->params.b_tff != frame->top_field_first) {
00178             x4->params.b_tff = frame->top_field_first;
00179             x264_encoder_reconfig(x4->enc, &x4->params);
00180         }
00181         if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den
00182          || x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
00183             x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
00184             x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
00185             x264_encoder_reconfig(x4->enc, &x4->params);
00186         }
00187     }
00188 
00189     do {
00190         bufsize = orig_bufsize;
00191     if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
00192         return -1;
00193 
00194     bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0);
00195     if (bufsize < 0)
00196         return -1;
00197     } while (!bufsize && !frame && x264_encoder_delayed_frames(x4->enc));
00198 
00199     /* FIXME: libx264 now provides DTS, but AVFrame doesn't have a field for it. */
00200     x4->out_pic.pts = pic_out.i_pts;
00201 
00202     switch (pic_out.i_type) {
00203     case X264_TYPE_IDR:
00204     case X264_TYPE_I:
00205         x4->out_pic.pict_type = AV_PICTURE_TYPE_I;
00206         break;
00207     case X264_TYPE_P:
00208         x4->out_pic.pict_type = AV_PICTURE_TYPE_P;
00209         break;
00210     case X264_TYPE_B:
00211     case X264_TYPE_BREF:
00212         x4->out_pic.pict_type = AV_PICTURE_TYPE_B;
00213         break;
00214     }
00215 
00216     x4->out_pic.key_frame = pic_out.b_keyframe;
00217     if (bufsize)
00218         x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
00219 
00220     return bufsize;
00221 }
00222 
00223 static av_cold int X264_close(AVCodecContext *avctx)
00224 {
00225     X264Context *x4 = avctx->priv_data;
00226 
00227     av_freep(&avctx->extradata);
00228     av_free(x4->sei);
00229 
00230     if (x4->enc)
00231         x264_encoder_close(x4->enc);
00232 
00233     return 0;
00234 }
00235 
00236 #define OPT_STR(opt, param)                                                   \
00237     do {                                                                      \
00238         int ret;                                                              \
00239         if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
00240             if(ret == X264_PARAM_BAD_NAME)                                    \
00241                 av_log(avctx, AV_LOG_ERROR,                                   \
00242                         "bad option '%s': '%s'\n", opt, param);               \
00243             else                                                              \
00244                 av_log(avctx, AV_LOG_ERROR,                                   \
00245                         "bad value for '%s': '%s'\n", opt, param);            \
00246             return -1;                                                        \
00247         }                                                                     \
00248     } while (0)
00249 
00250 static int convert_pix_fmt(enum PixelFormat pix_fmt)
00251 {
00252     switch (pix_fmt) {
00253     case PIX_FMT_YUV420P:
00254     case PIX_FMT_YUVJ420P:
00255     case PIX_FMT_YUV420P9:
00256     case PIX_FMT_YUV420P10: return X264_CSP_I420;
00257     case PIX_FMT_YUV422P:
00258     case PIX_FMT_YUV422P10: return X264_CSP_I422;
00259     case PIX_FMT_YUV444P:
00260     case PIX_FMT_YUV444P9:
00261     case PIX_FMT_YUV444P10: return X264_CSP_I444;
00262 #ifdef X264_CSP_BGR
00263     case PIX_FMT_BGR24:
00264         return X264_CSP_BGR;
00265 
00266     case PIX_FMT_RGB24:
00267         return X264_CSP_RGB;
00268 #endif
00269     };
00270     return 0;
00271 }
00272 
00273 #define PARSE_X264_OPT(name, var)\
00274     if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
00275         av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
00276         return AVERROR(EINVAL);\
00277     }
00278 
00279 static av_cold int X264_init(AVCodecContext *avctx)
00280 {
00281     X264Context *x4 = avctx->priv_data;
00282     int sw,sh;
00283 
00284     x264_param_default(&x4->params);
00285 
00286     x4->params.b_deblocking_filter         = avctx->flags & CODEC_FLAG_LOOP_FILTER;
00287 
00288     x4->params.rc.f_ip_factor             = 1 / fabs(avctx->i_quant_factor);
00289     x4->params.rc.f_pb_factor             = avctx->b_quant_factor;
00290     x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
00291     if (x4->preset || x4->tune)
00292         if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
00293             av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
00294             return AVERROR(EINVAL);
00295         }
00296 
00297     if (avctx->level > 0)
00298         x4->params.i_level_idc = avctx->level;
00299 
00300     x4->params.pf_log               = X264_log;
00301     x4->params.p_log_private        = avctx;
00302     x4->params.i_log_level          = X264_LOG_DEBUG;
00303     x4->params.i_csp                = convert_pix_fmt(avctx->pix_fmt);
00304 
00305     OPT_STR("weightp", x4->wpredp);
00306 
00307     if (avctx->bit_rate) {
00308         x4->params.rc.i_bitrate   = avctx->bit_rate / 1000;
00309         x4->params.rc.i_rc_method = X264_RC_ABR;
00310     }
00311     x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
00312     x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate    / 1000;
00313     x4->params.rc.b_stat_write      = avctx->flags & CODEC_FLAG_PASS1;
00314     if (avctx->flags & CODEC_FLAG_PASS2) {
00315         x4->params.rc.b_stat_read = 1;
00316     } else {
00317 #if FF_API_X264_GLOBAL_OPTS
00318         if (avctx->crf) {
00319             x4->params.rc.i_rc_method   = X264_RC_CRF;
00320             x4->params.rc.f_rf_constant = avctx->crf;
00321             x4->params.rc.f_rf_constant_max = avctx->crf_max;
00322         } else if (avctx->cqp > -1) {
00323             x4->params.rc.i_rc_method   = X264_RC_CQP;
00324             x4->params.rc.i_qp_constant = avctx->cqp;
00325         }
00326 #endif
00327 
00328         if (x4->crf >= 0) {
00329             x4->params.rc.i_rc_method   = X264_RC_CRF;
00330             x4->params.rc.f_rf_constant = x4->crf;
00331         } else if (x4->cqp >= 0) {
00332             x4->params.rc.i_rc_method   = X264_RC_CQP;
00333             x4->params.rc.i_qp_constant = x4->cqp;
00334         }
00335 
00336         if (x4->crf_max >= 0)
00337             x4->params.rc.f_rf_constant_max = x4->crf_max;
00338     }
00339 
00340     OPT_STR("stats", x4->stats);
00341 
00342     if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy &&
00343         (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
00344         x4->params.rc.f_vbv_buffer_init =
00345             (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
00346     }
00347 
00348     OPT_STR("level", x4->level);
00349 
00350     if(x4->x264opts){
00351         const char *p= x4->x264opts;
00352         while(p){
00353             char param[256]={0}, val[256]={0};
00354             if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
00355                 OPT_STR(param, "1");
00356             }else
00357                 OPT_STR(param, val);
00358             p= strchr(p, ':');
00359             p+=!!p;
00360         }
00361     }
00362 
00363 #if FF_API_X264_GLOBAL_OPTS
00364     if (avctx->aq_mode >= 0)
00365         x4->params.rc.i_aq_mode = avctx->aq_mode;
00366     if (avctx->aq_strength >= 0)
00367         x4->params.rc.f_aq_strength = avctx->aq_strength;
00368     if (avctx->psy_rd >= 0)
00369         x4->params.analyse.f_psy_rd           = avctx->psy_rd;
00370     if (avctx->psy_trellis >= 0)
00371         x4->params.analyse.f_psy_trellis      = avctx->psy_trellis;
00372     if (avctx->rc_lookahead >= 0)
00373         x4->params.rc.i_lookahead             = avctx->rc_lookahead;
00374     if (avctx->weighted_p_pred >= 0)
00375         x4->params.analyse.i_weighted_pred    = avctx->weighted_p_pred;
00376     if (avctx->bframebias)
00377         x4->params.i_bframe_bias              = avctx->bframebias;
00378     if (avctx->deblockalpha)
00379         x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha;
00380     if (avctx->deblockbeta)
00381         x4->params.i_deblocking_filter_beta    = avctx->deblockbeta;
00382     if (avctx->complexityblur >= 0)
00383         x4->params.rc.f_complexity_blur        = avctx->complexityblur;
00384     if (avctx->directpred >= 0)
00385         x4->params.analyse.i_direct_mv_pred    = avctx->directpred;
00386     if (avctx->partitions) {
00387         if (avctx->partitions & X264_PART_I4X4)
00388             x4->params.analyse.inter |= X264_ANALYSE_I4x4;
00389         if (avctx->partitions & X264_PART_I8X8)
00390             x4->params.analyse.inter |= X264_ANALYSE_I8x8;
00391         if (avctx->partitions & X264_PART_P8X8)
00392             x4->params.analyse.inter |= X264_ANALYSE_PSUB16x16;
00393         if (avctx->partitions & X264_PART_P4X4)
00394             x4->params.analyse.inter |= X264_ANALYSE_PSUB8x8;
00395         if (avctx->partitions & X264_PART_B8X8)
00396             x4->params.analyse.inter |= X264_ANALYSE_BSUB16x16;
00397     }
00398     if (avctx->flags2) {
00399         x4->params.analyse.b_ssim = avctx->flags2 & CODEC_FLAG2_SSIM;
00400         x4->params.b_intra_refresh = avctx->flags2 & CODEC_FLAG2_INTRA_REFRESH;
00401         x4->params.i_bframe_pyramid = avctx->flags2 & CODEC_FLAG2_BPYRAMID ? X264_B_PYRAMID_NORMAL : X264_B_PYRAMID_NONE;
00402         x4->params.analyse.b_weighted_bipred  = avctx->flags2 & CODEC_FLAG2_WPRED;
00403         x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS;
00404         x4->params.analyse.b_transform_8x8    = avctx->flags2 & CODEC_FLAG2_8X8DCT;
00405         x4->params.analyse.b_fast_pskip       = avctx->flags2 & CODEC_FLAG2_FASTPSKIP;
00406         x4->params.b_aud                      = avctx->flags2 & CODEC_FLAG2_AUD;
00407         x4->params.analyse.b_psy              = avctx->flags2 & CODEC_FLAG2_PSY;
00408         x4->params.rc.b_mb_tree               = !!(avctx->flags2 & CODEC_FLAG2_MBTREE);
00409     }
00410 #endif
00411 
00412     if (avctx->me_method == ME_EPZS)
00413         x4->params.analyse.i_me_method = X264_ME_DIA;
00414     else if (avctx->me_method == ME_HEX)
00415         x4->params.analyse.i_me_method = X264_ME_HEX;
00416     else if (avctx->me_method == ME_UMH)
00417         x4->params.analyse.i_me_method = X264_ME_UMH;
00418     else if (avctx->me_method == ME_FULL)
00419         x4->params.analyse.i_me_method = X264_ME_ESA;
00420     else if (avctx->me_method == ME_TESA)
00421         x4->params.analyse.i_me_method = X264_ME_TESA;
00422 
00423     if (avctx->gop_size >= 0)
00424         x4->params.i_keyint_max         = avctx->gop_size;
00425     if (avctx->max_b_frames >= 0)
00426         x4->params.i_bframe             = avctx->max_b_frames;
00427     if (avctx->scenechange_threshold >= 0)
00428         x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
00429     if (avctx->qmin >= 0)
00430         x4->params.rc.i_qp_min          = avctx->qmin;
00431     if (avctx->qmax >= 0)
00432         x4->params.rc.i_qp_max          = avctx->qmax;
00433     if (avctx->max_qdiff >= 0)
00434         x4->params.rc.i_qp_step         = avctx->max_qdiff;
00435     if (avctx->qblur >= 0)
00436         x4->params.rc.f_qblur           = avctx->qblur;     /* temporally blur quants */
00437     if (avctx->qcompress >= 0)
00438         x4->params.rc.f_qcompress       = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
00439     if (avctx->refs >= 0)
00440         x4->params.i_frame_reference    = avctx->refs;
00441     if (avctx->trellis >= 0)
00442         x4->params.analyse.i_trellis    = avctx->trellis;
00443     if (avctx->me_range >= 0)
00444         x4->params.analyse.i_me_range   = avctx->me_range;
00445     if (avctx->noise_reduction >= 0)
00446         x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
00447     if (avctx->me_subpel_quality >= 0)
00448         x4->params.analyse.i_subpel_refine   = avctx->me_subpel_quality;
00449     if (avctx->b_frame_strategy >= 0)
00450         x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
00451     if (avctx->keyint_min >= 0)
00452         x4->params.i_keyint_min = avctx->keyint_min;
00453     if (avctx->coder_type >= 0)
00454         x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
00455     if (avctx->me_cmp >= 0)
00456         x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
00457 
00458     if (x4->aq_mode >= 0)
00459         x4->params.rc.i_aq_mode = x4->aq_mode;
00460     if (x4->aq_strength >= 0)
00461         x4->params.rc.f_aq_strength = x4->aq_strength;
00462     PARSE_X264_OPT("psy-rd", psy_rd);
00463     PARSE_X264_OPT("deblock", deblock);
00464     PARSE_X264_OPT("partitions", partitions);
00465     PARSE_X264_OPT("stats", stats);
00466     if (x4->psy >= 0)
00467         x4->params.analyse.b_psy  = x4->psy;
00468     if (x4->rc_lookahead >= 0)
00469         x4->params.rc.i_lookahead = x4->rc_lookahead;
00470     if (x4->weightp >= 0)
00471         x4->params.analyse.i_weighted_pred = x4->weightp;
00472     if (x4->weightb >= 0)
00473         x4->params.analyse.b_weighted_bipred = x4->weightb;
00474     if (x4->cplxblur >= 0)
00475         x4->params.rc.f_complexity_blur = x4->cplxblur;
00476 
00477     if (x4->ssim >= 0)
00478         x4->params.analyse.b_ssim = x4->ssim;
00479     if (x4->intra_refresh >= 0)
00480         x4->params.b_intra_refresh = x4->intra_refresh;
00481     if (x4->b_bias != INT_MIN)
00482         x4->params.i_bframe_bias              = x4->b_bias;
00483     if (x4->b_pyramid >= 0)
00484         x4->params.i_bframe_pyramid = x4->b_pyramid;
00485     if (x4->mixed_refs >= 0)
00486         x4->params.analyse.b_mixed_references = x4->mixed_refs;
00487     if (x4->dct8x8 >= 0)
00488         x4->params.analyse.b_transform_8x8    = x4->dct8x8;
00489     if (x4->fast_pskip >= 0)
00490         x4->params.analyse.b_fast_pskip       = x4->fast_pskip;
00491     if (x4->aud >= 0)
00492         x4->params.b_aud                      = x4->aud;
00493     if (x4->mbtree >= 0)
00494         x4->params.rc.b_mb_tree               = x4->mbtree;
00495     if (x4->direct_pred >= 0)
00496         x4->params.analyse.i_direct_mv_pred   = x4->direct_pred;
00497 
00498     if (x4->slice_max_size >= 0)
00499         x4->params.i_slice_max_size =  x4->slice_max_size;
00500 
00501     if (x4->fastfirstpass)
00502         x264_param_apply_fastfirstpass(&x4->params);
00503 
00504     if (x4->profile)
00505         if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
00506             av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
00507             return AVERROR(EINVAL);
00508         }
00509 
00510     x4->params.i_width          = avctx->width;
00511     x4->params.i_height         = avctx->height;
00512     av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
00513     x4->params.vui.i_sar_width  = sw;
00514     x4->params.vui.i_sar_height = sh;
00515     x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
00516     x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
00517 
00518     x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
00519 
00520     x4->params.i_threads      = avctx->thread_count;
00521 
00522     x4->params.b_interlaced   = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
00523 
00524 //    x4->params.b_open_gop     = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
00525 
00526     x4->params.i_slice_count  = avctx->slices;
00527 
00528     x4->params.vui.b_fullrange = avctx->pix_fmt == PIX_FMT_YUVJ420P;
00529 
00530     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
00531         x4->params.b_repeat_headers = 0;
00532 
00533     // update AVCodecContext with x264 parameters
00534     avctx->has_b_frames = x4->params.i_bframe ?
00535         x4->params.i_bframe_pyramid ? 2 : 1 : 0;
00536     if (avctx->max_b_frames < 0)
00537         avctx->max_b_frames = 0;
00538 
00539     avctx->bit_rate = x4->params.rc.i_bitrate*1000;
00540 #if FF_API_X264_GLOBAL_OPTS
00541     avctx->crf = x4->params.rc.f_rf_constant;
00542 #endif
00543 
00544     x4->enc = x264_encoder_open(&x4->params);
00545     if (!x4->enc)
00546         return -1;
00547 
00548     avctx->coded_frame = &x4->out_pic;
00549 
00550     if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
00551         x264_nal_t *nal;
00552         int nnal, s, i;
00553 
00554         s = x264_encoder_headers(x4->enc, &nal, &nnal);
00555 
00556         for (i = 0; i < nnal; i++)
00557             if (nal[i].i_type == NAL_SEI)
00558                 av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
00559 
00560         avctx->extradata      = av_malloc(s);
00561         avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1);
00562     }
00563 
00564     return 0;
00565 }
00566 
00567 static const enum PixelFormat pix_fmts_8bit[] = {
00568     PIX_FMT_YUV420P,
00569     PIX_FMT_YUVJ420P,
00570     PIX_FMT_YUV422P,
00571     PIX_FMT_YUV444P,
00572     PIX_FMT_NONE
00573 };
00574 static const enum PixelFormat pix_fmts_9bit[] = {
00575     PIX_FMT_YUV420P9,
00576     PIX_FMT_YUV444P9,
00577     PIX_FMT_NONE
00578 };
00579 static const enum PixelFormat pix_fmts_10bit[] = {
00580     PIX_FMT_YUV420P10,
00581     PIX_FMT_YUV422P10,
00582     PIX_FMT_YUV444P10,
00583     PIX_FMT_NONE
00584 };
00585 static const enum PixelFormat pix_fmts_8bit_rgb[] = {
00586 #ifdef X264_CSP_BGR
00587     PIX_FMT_BGR24,
00588     PIX_FMT_RGB24,
00589 #endif
00590     PIX_FMT_NONE
00591 };
00592 
00593 static av_cold void X264_init_static(AVCodec *codec)
00594 {
00595     if (x264_bit_depth == 8)
00596         codec->pix_fmts = pix_fmts_8bit;
00597     else if (x264_bit_depth == 9)
00598         codec->pix_fmts = pix_fmts_9bit;
00599     else if (x264_bit_depth == 10)
00600         codec->pix_fmts = pix_fmts_10bit;
00601 }
00602 
00603 #define OFFSET(x) offsetof(X264Context, x)
00604 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
00605 static const AVOption options[] = {
00606     { "preset",        "Set the encoding preset (cf. x264 --fullhelp)",   OFFSET(preset),        AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
00607     { "tune",          "Tune the encoding params (cf. x264 --fullhelp)",  OFFSET(tune),          AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00608     { "profile",       "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile),       AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00609     { "fastfirstpass", "Use fast settings when encoding first pass",      OFFSET(fastfirstpass), AV_OPT_TYPE_INT,    { 1 }, 0, 1, VE},
00610     {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00611     {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00612     {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00613     {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
00614     { "crf",           "Select the quality for constant quality mode",    OFFSET(crf),           AV_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE },
00615     { "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 },
00616     { "qp",            "Constant quantization parameter rate control method",OFFSET(cqp),        AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },
00617     { "aq-mode",       "AQ method",                                       OFFSET(aq_mode),       AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "aq_mode"},
00618     { "none",          NULL,                              0, AV_OPT_TYPE_CONST, {X264_AQ_NONE},         INT_MIN, INT_MAX, VE, "aq_mode" },
00619     { "variance",      "Variance AQ (complexity mask)",   0, AV_OPT_TYPE_CONST, {X264_AQ_VARIANCE},     INT_MIN, INT_MAX, VE, "aq_mode" },
00620     { "autovariance",  "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
00621     { "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},
00622     { "psy",           "Use psychovisual optimizations.",                 OFFSET(psy),           AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00623     { "psy-rd",        "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING,  {0 }, 0, 0, VE},
00624     { "rc-lookahead",  "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE },
00625     { "weightb",       "Weighted prediction for B-frames.",               OFFSET(weightb),       AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00626     { "weightp",       "Weighted prediction analysis method.",            OFFSET(weightp),       AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "weightp" },
00627     { "none",          NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_NONE},   INT_MIN, INT_MAX, VE, "weightp" },
00628     { "simple",        NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
00629     { "smart",         NULL, 0, AV_OPT_TYPE_CONST, {X264_WEIGHTP_SMART},  INT_MIN, INT_MAX, VE, "weightp" },
00630     { "ssim",          "Calculate and print SSIM stats.",                 OFFSET(ssim),          AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00631     { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE },
00632     { "b-bias",        "Influences how often B-frames are used",          OFFSET(b_bias),        AV_OPT_TYPE_INT,    {INT_MIN}, INT_MIN, INT_MAX, VE },
00633     { "b-pyramid",     "Keep some B-frames as references.",               OFFSET(b_pyramid),     AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "b_pyramid" },
00634     { "none",          NULL,                                  0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NONE},   INT_MIN, INT_MAX, VE, "b_pyramid" },
00635     { "strict",        "Strictly hierarchical pyramid",       0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
00636     { "normal",        "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
00637     { "mixed-refs",    "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE },
00638     { "8x8dct",        "High profile 8x8 transform.",                     OFFSET(dct8x8),        AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00639     { "fast-pskip",    NULL,                                              OFFSET(fast_pskip),    AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00640     { "aud",           "Use access unit delimiters.",                     OFFSET(aud),           AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00641     { "mbtree",        "Use macroblock tree ratecontrol.",                OFFSET(mbtree),        AV_OPT_TYPE_INT,    {-1 }, -1, 1, VE},
00642     { "deblock",       "Loop filter parameters, in <alpha:beta> form.",   OFFSET(deblock),       AV_OPT_TYPE_STRING, { 0 },  0, 0, VE},
00643     { "cplxblur",      "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT,  {-1 }, -1, FLT_MAX, VE},
00644     { "partitions",    "A comma-separated list of partitions to consider. "
00645                        "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
00646     { "direct-pred",   "Direct MV prediction mode",                       OFFSET(direct_pred),   AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE, "direct-pred" },
00647     { "none",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_NONE },     0, 0, VE, "direct-pred" },
00648     { "spatial",       NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_SPATIAL },  0, 0, VE, "direct-pred" },
00649     { "temporal",      NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
00650     { "auto",          NULL,      0,    AV_OPT_TYPE_CONST, { X264_DIRECT_PRED_AUTO },     0, 0, VE, "direct-pred" },
00651     { "slice-max-size","Limit the size of each slice in bytes",           OFFSET(slice_max_size),AV_OPT_TYPE_INT,    {-1 }, -1, INT_MAX, VE },
00652     { "stats",         "Filename for 2 pass stats",                       OFFSET(stats),         AV_OPT_TYPE_STRING, { 0 },  0,       0, VE },
00653     { NULL },
00654 };
00655 
00656 static const AVClass class = {
00657     .class_name = "libx264",
00658     .item_name  = av_default_item_name,
00659     .option     = options,
00660     .version    = LIBAVUTIL_VERSION_INT,
00661 };
00662 
00663 static const AVClass rgbclass = {
00664     .class_name = "libx264rgb",
00665     .item_name  = av_default_item_name,
00666     .option     = options,
00667     .version    = LIBAVUTIL_VERSION_INT,
00668 };
00669 
00670 static const AVCodecDefault x264_defaults[] = {
00671     { "b",                "0" },
00672     { "bf",               "-1" },
00673     { "flags2",           "0" },
00674     { "g",                "-1" },
00675     { "qmin",             "-1" },
00676     { "qmax",             "-1" },
00677     { "qdiff",            "-1" },
00678     { "qblur",            "-1" },
00679     { "qcomp",            "-1" },
00680     { "rc_lookahead",     "-1" },
00681     { "refs",             "-1" },
00682     { "sc_threshold",     "-1" },
00683     { "trellis",          "-1" },
00684     { "nr",               "-1" },
00685     { "me_range",         "-1" },
00686     { "me_method",        "-1" },
00687     { "subq",             "-1" },
00688     { "b_strategy",       "-1" },
00689     { "keyint_min",       "-1" },
00690     { "coder",            "-1" },
00691     { "cmp",              "-1" },
00692     { "threads",          AV_STRINGIFY(X264_THREADS_AUTO) },
00693     { NULL },
00694 };
00695 
00696 AVCodec ff_libx264_encoder = {
00697     .name           = "libx264",
00698     .type           = AVMEDIA_TYPE_VIDEO,
00699     .id             = CODEC_ID_H264,
00700     .priv_data_size = sizeof(X264Context),
00701     .init           = X264_init,
00702     .encode         = X264_frame,
00703     .close          = X264_close,
00704     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
00705     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
00706     .priv_class     = &class,
00707     .defaults       = x264_defaults,
00708     .init_static_data = X264_init_static,
00709 };
00710 
00711 AVCodec ff_libx264rgb_encoder = {
00712     .name           = "libx264rgb",
00713     .type           = AVMEDIA_TYPE_VIDEO,
00714     .id             = CODEC_ID_H264,
00715     .priv_data_size = sizeof(X264Context),
00716     .init           = X264_init,
00717     .encode         = X264_frame,
00718     .close          = X264_close,
00719     .capabilities   = CODEC_CAP_DELAY,
00720     .long_name      = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
00721     .priv_class     = &rgbclass,
00722     .defaults       = x264_defaults,
00723     .pix_fmts       = pix_fmts_8bit_rgb,
00724 };
Generated on Fri Feb 1 2013 14:34:38 for FFmpeg by doxygen 1.7.1