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