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