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libx264.c
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1 /*
2  * H.264 encoding using the x264 library
3  * Copyright (C) 2005 Mans Rullgard <mans@mansr.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/internal.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/stereo3d.h"
27 #include "avcodec.h"
28 #include "internal.h"
29 
30 #if defined(_MSC_VER)
31 #define X264_API_IMPORTS 1
32 #endif
33 
34 #include <x264.h>
35 #include <float.h>
36 #include <math.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 
41 typedef struct X264Context {
42  AVClass *class;
43  x264_param_t params;
44  x264_t *enc;
45  x264_picture_t pic;
46  uint8_t *sei;
47  int sei_size;
48  char *preset;
49  char *tune;
50  char *profile;
51  char *level;
52  int fastfirstpass;
53  char *wpredp;
54  char *x264opts;
55  float crf;
56  float crf_max;
57  int cqp;
58  int aq_mode;
59  float aq_strength;
60  char *psy_rd;
61  int psy;
62  int rc_lookahead;
63  int weightp;
64  int weightb;
65  int ssim;
66  int intra_refresh;
67  int bluray_compat;
68  int b_bias;
69  int b_pyramid;
70  int mixed_refs;
71  int dct8x8;
72  int fast_pskip;
73  int aud;
74  int mbtree;
75  char *deblock;
76  float cplxblur;
77  char *partitions;
78  int direct_pred;
79  int slice_max_size;
80  char *stats;
81  int nal_hrd;
82  char *x264_params;
83 } X264Context;
84 
85 static void X264_log(void *p, int level, const char *fmt, va_list args)
86 {
87  static const int level_map[] = {
88  [X264_LOG_ERROR] = AV_LOG_ERROR,
89  [X264_LOG_WARNING] = AV_LOG_WARNING,
90  [X264_LOG_INFO] = AV_LOG_INFO,
91  [X264_LOG_DEBUG] = AV_LOG_DEBUG
92  };
93 
94  if (level < 0 || level > X264_LOG_DEBUG)
95  return;
96 
97  av_vlog(p, level_map[level], fmt, args);
98 }
99 
100 
101 static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
102  x264_nal_t *nals, int nnal)
103 {
104  X264Context *x4 = ctx->priv_data;
105  uint8_t *p;
106  int i, size = x4->sei_size, ret;
107 
108  if (!nnal)
109  return 0;
110 
111  for (i = 0; i < nnal; i++)
112  size += nals[i].i_payload;
113 
114  if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
115  return ret;
116 
117  p = pkt->data;
118 
119  /* Write the SEI as part of the first frame. */
120  if (x4->sei_size > 0 && nnal > 0) {
121  if (x4->sei_size > size) {
122  av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
123  return -1;
124  }
125  memcpy(p, x4->sei, x4->sei_size);
126  p += x4->sei_size;
127  x4->sei_size = 0;
128  av_freep(&x4->sei);
129  }
130 
131  for (i = 0; i < nnal; i++){
132  memcpy(p, nals[i].p_payload, nals[i].i_payload);
133  p += nals[i].i_payload;
134  }
135 
136  return 1;
137 }
138 
139 static int avfmt2_num_planes(int avfmt)
140 {
141  switch (avfmt) {
142  case AV_PIX_FMT_YUV420P:
143  case AV_PIX_FMT_YUVJ420P:
144  case AV_PIX_FMT_YUV420P9:
145  case AV_PIX_FMT_YUV420P10:
146  case AV_PIX_FMT_YUV444P:
147  return 3;
148 
149  case AV_PIX_FMT_BGR24:
150  case AV_PIX_FMT_RGB24:
151  return 1;
152 
153  default:
154  return 3;
155  }
156 }
157 
158 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
159  int *got_packet)
160 {
161  X264Context *x4 = ctx->priv_data;
162  x264_nal_t *nal;
163  int nnal, i, ret;
164  x264_picture_t pic_out = {0};
165  AVFrameSideData *side_data;
166 
167  x264_picture_init( &x4->pic );
168  x4->pic.img.i_csp = x4->params.i_csp;
169  if (x264_bit_depth > 8)
170  x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
171  x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
172 
173  if (frame) {
174  for (i = 0; i < x4->pic.img.i_plane; i++) {
175  x4->pic.img.plane[i] = frame->data[i];
176  x4->pic.img.i_stride[i] = frame->linesize[i];
177  }
178 
179  x4->pic.i_pts = frame->pts;
180  x4->pic.i_type =
181  frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
182  frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
183  frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
184  X264_TYPE_AUTO;
185  if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
186  x4->params.b_tff = frame->top_field_first;
187  x264_encoder_reconfig(x4->enc, &x4->params);
188  }
189  if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
190  x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
191  x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
192  x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
193  x264_encoder_reconfig(x4->enc, &x4->params);
194  }
195 
196  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_STEREO3D);
197  if (side_data) {
198  AVStereo3D *stereo = (AVStereo3D *)side_data->data;
199  int fpa_type;
200 
201  switch (stereo->type) {
202  case AV_STEREO3D_CHECKERBOARD:
203  fpa_type = 0;
204  break;
205  case AV_STEREO3D_LINES:
206  fpa_type = 1;
207  break;
208  case AV_STEREO3D_COLUMNS:
209  fpa_type = 2;
210  break;
211  case AV_STEREO3D_SIDEBYSIDE:
212  fpa_type = 3;
213  break;
214  case AV_STEREO3D_TOPBOTTOM:
215  fpa_type = 4;
216  break;
217  case AV_STEREO3D_FRAMESEQUENCE:
218  fpa_type = 5;
219  break;
220  default:
221  fpa_type = -1;
222  break;
223  }
224 
225  if (fpa_type != x4->params.i_frame_packing) {
226  x4->params.i_frame_packing = fpa_type;
227  x264_encoder_reconfig(x4->enc, &x4->params);
228  }
229  }
230  }
231  do {
232  if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
233  return -1;
234 
235  ret = encode_nals(ctx, pkt, nal, nnal);
236  if (ret < 0)
237  return -1;
238  } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
239 
240  pkt->pts = pic_out.i_pts;
241  pkt->dts = pic_out.i_dts;
242 
243  switch (pic_out.i_type) {
244  case X264_TYPE_IDR:
245  case X264_TYPE_I:
246  ctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
247  break;
248  case X264_TYPE_P:
249  ctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
250  break;
251  case X264_TYPE_B:
252  case X264_TYPE_BREF:
253  ctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
254  break;
255  }
256 
257  pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
258  if (ret)
259  ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
260 
261  *got_packet = ret;
262  return 0;
263 }
264 
265 static av_cold int X264_close(AVCodecContext *avctx)
266 {
267  X264Context *x4 = avctx->priv_data;
268 
269  av_freep(&avctx->extradata);
270  av_free(x4->sei);
271 
272  if (x4->enc)
273  x264_encoder_close(x4->enc);
274 
275  av_frame_free(&avctx->coded_frame);
276 
277  return 0;
278 }
279 
280 #define OPT_STR(opt, param) \
281  do { \
282  int ret; \
283  if (param!=NULL && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
284  if(ret == X264_PARAM_BAD_NAME) \
285  av_log(avctx, AV_LOG_ERROR, \
286  "bad option '%s': '%s'\n", opt, param); \
287  else \
288  av_log(avctx, AV_LOG_ERROR, \
289  "bad value for '%s': '%s'\n", opt, param); \
290  return -1; \
291  } \
292  } while (0)
293 
294 static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
295 {
296  switch (pix_fmt) {
297  case AV_PIX_FMT_YUV420P:
298  case AV_PIX_FMT_YUVJ420P:
299  case AV_PIX_FMT_YUV420P9:
300  case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
301  case AV_PIX_FMT_YUV422P:
302  case AV_PIX_FMT_YUVJ422P:
303  case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
304  case AV_PIX_FMT_YUV444P:
305  case AV_PIX_FMT_YUVJ444P:
306  case AV_PIX_FMT_YUV444P9:
307  case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
308 #ifdef X264_CSP_BGR
309  case AV_PIX_FMT_BGR24:
310  return X264_CSP_BGR;
311 
312  case AV_PIX_FMT_RGB24:
313  return X264_CSP_RGB;
314 #endif
315  case AV_PIX_FMT_NV12: return X264_CSP_NV12;
316  case AV_PIX_FMT_NV16:
317  case AV_PIX_FMT_NV20: return X264_CSP_NV16;
318  };
319  return 0;
320 }
321 
322 #define PARSE_X264_OPT(name, var)\
323  if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
324  av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
325  return AVERROR(EINVAL);\
326  }
327 
328 static av_cold int X264_init(AVCodecContext *avctx)
329 {
330  X264Context *x4 = avctx->priv_data;
331  int sw,sh;
332 
333  x264_param_default(&x4->params);
334 
335  x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
336 
337  x4->params.rc.f_pb_factor = avctx->b_quant_factor;
338  x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
339  if (x4->preset || x4->tune)
340  if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
341  int i;
342  av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
343  av_log(avctx, AV_LOG_INFO, "Possible presets:");
344  for (i = 0; x264_preset_names[i]; i++)
345  av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
346  av_log(avctx, AV_LOG_INFO, "\n");
347  av_log(avctx, AV_LOG_INFO, "Possible tunes:");
348  for (i = 0; x264_tune_names[i]; i++)
349  av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
350  av_log(avctx, AV_LOG_INFO, "\n");
351  return AVERROR(EINVAL);
352  }
353 
354  if (avctx->level > 0)
355  x4->params.i_level_idc = avctx->level;
356 
357  x4->params.pf_log = X264_log;
358  x4->params.p_log_private = avctx;
359  x4->params.i_log_level = X264_LOG_DEBUG;
360  x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
361 
362  OPT_STR("weightp", x4->wpredp);
363 
364  if (avctx->bit_rate) {
365  x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
366  x4->params.rc.i_rc_method = X264_RC_ABR;
367  }
368  x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
369  x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
370  x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
371  if (avctx->flags & CODEC_FLAG_PASS2) {
372  x4->params.rc.b_stat_read = 1;
373  } else {
374  if (x4->crf >= 0) {
375  x4->params.rc.i_rc_method = X264_RC_CRF;
376  x4->params.rc.f_rf_constant = x4->crf;
377  } else if (x4->cqp >= 0) {
378  x4->params.rc.i_rc_method = X264_RC_CQP;
379  x4->params.rc.i_qp_constant = x4->cqp;
380  }
381 
382  if (x4->crf_max >= 0)
383  x4->params.rc.f_rf_constant_max = x4->crf_max;
384  }
385 
386  if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
387  (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
388  x4->params.rc.f_vbv_buffer_init =
389  (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
390  }
391 
392  OPT_STR("level", x4->level);
393 
394  if(x4->x264opts){
395  const char *p= x4->x264opts;
396  while(p){
397  char param[256]={0}, val[256]={0};
398  if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
399  OPT_STR(param, "1");
400  }else
401  OPT_STR(param, val);
402  p= strchr(p, ':');
403  p+=!!p;
404  }
405  }
406 
407  if (avctx->i_quant_factor > 0)
408  x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
409 
410  if (avctx->me_method == ME_EPZS)
411  x4->params.analyse.i_me_method = X264_ME_DIA;
412  else if (avctx->me_method == ME_HEX)
413  x4->params.analyse.i_me_method = X264_ME_HEX;
414  else if (avctx->me_method == ME_UMH)
415  x4->params.analyse.i_me_method = X264_ME_UMH;
416  else if (avctx->me_method == ME_FULL)
417  x4->params.analyse.i_me_method = X264_ME_ESA;
418  else if (avctx->me_method == ME_TESA)
419  x4->params.analyse.i_me_method = X264_ME_TESA;
420 
421  if (avctx->gop_size >= 0)
422  x4->params.i_keyint_max = avctx->gop_size;
423  if (avctx->max_b_frames >= 0)
424  x4->params.i_bframe = avctx->max_b_frames;
425  if (avctx->scenechange_threshold >= 0)
426  x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
427  if (avctx->qmin >= 0)
428  x4->params.rc.i_qp_min = avctx->qmin;
429  if (avctx->qmax >= 0)
430  x4->params.rc.i_qp_max = avctx->qmax;
431  if (avctx->max_qdiff >= 0)
432  x4->params.rc.i_qp_step = avctx->max_qdiff;
433  if (avctx->qblur >= 0)
434  x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
435  if (avctx->qcompress >= 0)
436  x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
437  if (avctx->refs >= 0)
438  x4->params.i_frame_reference = avctx->refs;
439  if (avctx->trellis >= 0)
440  x4->params.analyse.i_trellis = avctx->trellis;
441  if (avctx->me_range >= 0)
442  x4->params.analyse.i_me_range = avctx->me_range;
443  if (avctx->noise_reduction >= 0)
444  x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
445  if (avctx->me_subpel_quality >= 0)
446  x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
447  if (avctx->b_frame_strategy >= 0)
448  x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
449  if (avctx->keyint_min >= 0)
450  x4->params.i_keyint_min = avctx->keyint_min;
451  if (avctx->coder_type >= 0)
452  x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
453  if (avctx->me_cmp >= 0)
454  x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
455 
456  if (x4->aq_mode >= 0)
457  x4->params.rc.i_aq_mode = x4->aq_mode;
458  if (x4->aq_strength >= 0)
459  x4->params.rc.f_aq_strength = x4->aq_strength;
460  PARSE_X264_OPT("psy-rd", psy_rd);
461  PARSE_X264_OPT("deblock", deblock);
462  PARSE_X264_OPT("partitions", partitions);
463  PARSE_X264_OPT("stats", stats);
464  if (x4->psy >= 0)
465  x4->params.analyse.b_psy = x4->psy;
466  if (x4->rc_lookahead >= 0)
467  x4->params.rc.i_lookahead = x4->rc_lookahead;
468  if (x4->weightp >= 0)
469  x4->params.analyse.i_weighted_pred = x4->weightp;
470  if (x4->weightb >= 0)
471  x4->params.analyse.b_weighted_bipred = x4->weightb;
472  if (x4->cplxblur >= 0)
473  x4->params.rc.f_complexity_blur = x4->cplxblur;
474 
475  if (x4->ssim >= 0)
476  x4->params.analyse.b_ssim = x4->ssim;
477  if (x4->intra_refresh >= 0)
478  x4->params.b_intra_refresh = x4->intra_refresh;
479  if (x4->bluray_compat >= 0) {
480  x4->params.b_bluray_compat = x4->bluray_compat;
481  x4->params.b_vfr_input = 0;
482  }
483  if (x4->b_bias != INT_MIN)
484  x4->params.i_bframe_bias = x4->b_bias;
485  if (x4->b_pyramid >= 0)
486  x4->params.i_bframe_pyramid = x4->b_pyramid;
487  if (x4->mixed_refs >= 0)
488  x4->params.analyse.b_mixed_references = x4->mixed_refs;
489  if (x4->dct8x8 >= 0)
490  x4->params.analyse.b_transform_8x8 = x4->dct8x8;
491  if (x4->fast_pskip >= 0)
492  x4->params.analyse.b_fast_pskip = x4->fast_pskip;
493  if (x4->aud >= 0)
494  x4->params.b_aud = x4->aud;
495  if (x4->mbtree >= 0)
496  x4->params.rc.b_mb_tree = x4->mbtree;
497  if (x4->direct_pred >= 0)
498  x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
499 
500  if (x4->slice_max_size >= 0)
501  x4->params.i_slice_max_size = x4->slice_max_size;
502  else {
503  /*
504  * Allow x264 to be instructed through AVCodecContext about the maximum
505  * size of the RTP payload. For example, this enables the production of
506  * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
507  * NAL unit per RTP packet.
508  */
509  if (avctx->rtp_payload_size)
510  x4->params.i_slice_max_size = avctx->rtp_payload_size;
511  }
512 
513  if (x4->fastfirstpass)
514  x264_param_apply_fastfirstpass(&x4->params);
515 
516  /* Allow specifying the x264 profile through AVCodecContext. */
517  if (!x4->profile)
518  switch (avctx->profile) {
519  case FF_PROFILE_H264_BASELINE:
520  x4->profile = av_strdup("baseline");
521  break;
522  case FF_PROFILE_H264_HIGH:
523  x4->profile = av_strdup("high");
524  break;
525  case FF_PROFILE_H264_HIGH_10:
526  x4->profile = av_strdup("high10");
527  break;
528  case FF_PROFILE_H264_HIGH_422:
529  x4->profile = av_strdup("high422");
530  break;
531  case FF_PROFILE_H264_HIGH_444:
532  x4->profile = av_strdup("high444");
533  break;
534  case FF_PROFILE_H264_MAIN:
535  x4->profile = av_strdup("main");
536  break;
537  default:
538  break;
539  }
540 
541  if (x4->nal_hrd >= 0)
542  x4->params.i_nal_hrd = x4->nal_hrd;
543 
544  if (x4->profile)
545  if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
546  int i;
547  av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
548  av_log(avctx, AV_LOG_INFO, "Possible profiles:");
549  for (i = 0; x264_profile_names[i]; i++)
550  av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
551  av_log(avctx, AV_LOG_INFO, "\n");
552  return AVERROR(EINVAL);
553  }
554 
555  x4->params.i_width = avctx->width;
556  x4->params.i_height = avctx->height;
557  av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
558  x4->params.vui.i_sar_width = sw;
559  x4->params.vui.i_sar_height = sh;
560  x4->params.i_fps_num = x4->params.i_timebase_den = avctx->time_base.den;
561  x4->params.i_fps_den = x4->params.i_timebase_num = avctx->time_base.num;
562 
563  x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
564 
565  x4->params.i_threads = avctx->thread_count;
566  if (avctx->thread_type)
567  x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
568 
569  x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
570 
571  x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
572 
573  x4->params.i_slice_count = avctx->slices;
574 
575  x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
576  avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
577  avctx->pix_fmt == AV_PIX_FMT_YUVJ444P;
578 
579  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
580  x4->params.b_repeat_headers = 0;
581 
582  if (x4->x264_params) {
583  AVDictionary *dict = NULL;
584  AVDictionaryEntry *en = NULL;
585 
586  if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
587  while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
588  if (x264_param_parse(&x4->params, en->key, en->value) < 0)
589  av_log(avctx, AV_LOG_WARNING,
590  "Error parsing option '%s = %s'.\n",
591  en->key, en->value);
592  }
593 
594  av_dict_free(&dict);
595  }
596  }
597 
598  // update AVCodecContext with x264 parameters
599  avctx->has_b_frames = x4->params.i_bframe ?
600  x4->params.i_bframe_pyramid ? 2 : 1 : 0;
601  if (avctx->max_b_frames < 0)
602  avctx->max_b_frames = 0;
603 
604  avctx->bit_rate = x4->params.rc.i_bitrate*1000;
605 
606  x4->enc = x264_encoder_open(&x4->params);
607  if (!x4->enc)
608  return -1;
609 
610  avctx->coded_frame = av_frame_alloc();
611  if (!avctx->coded_frame)
612  return AVERROR(ENOMEM);
613 
614  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
615  x264_nal_t *nal;
616  uint8_t *p;
617  int nnal, s, i;
618 
619  s = x264_encoder_headers(x4->enc, &nal, &nnal);
620  avctx->extradata = p = av_malloc(s);
621 
622  for (i = 0; i < nnal; i++) {
623  /* Don't put the SEI in extradata. */
624  if (nal[i].i_type == NAL_SEI) {
625  av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
626  x4->sei_size = nal[i].i_payload;
627  x4->sei = av_malloc(x4->sei_size);
628  memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
629  continue;
630  }
631  memcpy(p, nal[i].p_payload, nal[i].i_payload);
632  p += nal[i].i_payload;
633  }
634  avctx->extradata_size = p - avctx->extradata;
635  }
636 
637  return 0;
638 }
639 
640 static const enum AVPixelFormat pix_fmts_8bit[] = {
641  AV_PIX_FMT_YUV420P,
642  AV_PIX_FMT_YUVJ420P,
643  AV_PIX_FMT_YUV422P,
644  AV_PIX_FMT_YUVJ422P,
645  AV_PIX_FMT_YUV444P,
646  AV_PIX_FMT_YUVJ444P,
647  AV_PIX_FMT_NV12,
648  AV_PIX_FMT_NV16,
649  AV_PIX_FMT_NONE
650 };
651 static const enum AVPixelFormat pix_fmts_9bit[] = {
652  AV_PIX_FMT_YUV420P9,
653  AV_PIX_FMT_YUV444P9,
654  AV_PIX_FMT_NONE
655 };
656 static const enum AVPixelFormat pix_fmts_10bit[] = {
657  AV_PIX_FMT_YUV420P10,
658  AV_PIX_FMT_YUV422P10,
659  AV_PIX_FMT_YUV444P10,
660  AV_PIX_FMT_NV20,
661  AV_PIX_FMT_NONE
662 };
663 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
664 #ifdef X264_CSP_BGR
665  AV_PIX_FMT_BGR24,
666  AV_PIX_FMT_RGB24,
667 #endif
668  AV_PIX_FMT_NONE
669 };
670 
671 static av_cold void X264_init_static(AVCodec *codec)
672 {
673  if (x264_bit_depth == 8)
674  codec->pix_fmts = pix_fmts_8bit;
675  else if (x264_bit_depth == 9)
676  codec->pix_fmts = pix_fmts_9bit;
677  else if (x264_bit_depth == 10)
678  codec->pix_fmts = pix_fmts_10bit;
679 }
680 
681 #define OFFSET(x) offsetof(X264Context, x)
682 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
683 static const AVOption options[] = {
684  { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
685  { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
686  { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
687  { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
688  {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
689  {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
690  {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
691  {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
692  { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
693  { "crf_max", "In CRF mode, prevents VBV from lowering quality beyond this point.",OFFSET(crf_max), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
694  { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
695  { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
696  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
697  { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
698  { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
699  { "aq-strength", "AQ strength. Reduces blocking and blurring in flat and textured areas.", OFFSET(aq_strength), AV_OPT_TYPE_FLOAT, {.dbl = -1}, -1, FLT_MAX, VE},
700  { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
701  { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
702  { "rc-lookahead", "Number of frames to look ahead for frametype and ratecontrol", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
703  { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
704  { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
705  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
706  { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
707  { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
708  { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
709  { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
710  { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
711  { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
712  { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
713  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
714  { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
715  { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
716  { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, VE },
717  { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
718  { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
719  { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
720  { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
721  { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
722  { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
723  { "partitions", "A comma-separated list of partitions to consider. "
724  "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
725  { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
726  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
727  { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
728  { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
729  { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
730  { "slice-max-size","Limit the size of each slice in bytes", OFFSET(slice_max_size),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
731  { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
732  { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
733  "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
734  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
735  { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
736  { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
737  { "x264-params", "Override the x264 configuration using a :-separated list of key=value parameters", OFFSET(x264_params), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
738  { NULL },
739 };
740 
741 static const AVClass x264_class = {
742  .class_name = "libx264",
743  .item_name = av_default_item_name,
744  .option = options,
745  .version = LIBAVUTIL_VERSION_INT,
746 };
747 
748 static const AVClass rgbclass = {
749  .class_name = "libx264rgb",
750  .item_name = av_default_item_name,
751  .option = options,
752  .version = LIBAVUTIL_VERSION_INT,
753 };
754 
755 static const AVCodecDefault x264_defaults[] = {
756  { "b", "0" },
757  { "bf", "-1" },
758  { "flags2", "0" },
759  { "g", "-1" },
760  { "i_qfactor", "-1" },
761  { "qmin", "-1" },
762  { "qmax", "-1" },
763  { "qdiff", "-1" },
764  { "qblur", "-1" },
765  { "qcomp", "-1" },
766 // { "rc_lookahead", "-1" },
767  { "refs", "-1" },
768  { "sc_threshold", "-1" },
769  { "trellis", "-1" },
770  { "nr", "-1" },
771  { "me_range", "-1" },
772  { "me_method", "-1" },
773  { "subq", "-1" },
774  { "b_strategy", "-1" },
775  { "keyint_min", "-1" },
776  { "coder", "-1" },
777  { "cmp", "-1" },
778  { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
779  { "thread_type", "0" },
780  { "flags", "+cgop" },
781  { "rc_init_occupancy","-1" },
782  { NULL },
783 };
784 
785 AVCodec ff_libx264_encoder = {
786  .name = "libx264",
787  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
788  .type = AVMEDIA_TYPE_VIDEO,
789  .id = AV_CODEC_ID_H264,
790  .priv_data_size = sizeof(X264Context),
791  .init = X264_init,
792  .encode2 = X264_frame,
793  .close = X264_close,
794  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
795  .priv_class = &x264_class,
796  .defaults = x264_defaults,
797  .init_static_data = X264_init_static,
798 };
799 
800 AVCodec ff_libx264rgb_encoder = {
801  .name = "libx264rgb",
802  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
803  .type = AVMEDIA_TYPE_VIDEO,
804  .id = AV_CODEC_ID_H264,
805  .priv_data_size = sizeof(X264Context),
806  .init = X264_init,
807  .encode2 = X264_frame,
808  .close = X264_close,
809  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
810  .priv_class = &rgbclass,
811  .defaults = x264_defaults,
812  .pix_fmts = pix_fmts_8bit_rgb,
813 };
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