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