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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/eval.h"
23 #include "libavutil/internal.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/stereo3d.h"
28 #include "avcodec.h"
29 #include "internal.h"
30 
31 #if defined(_MSC_VER)
32 #define X264_API_IMPORTS 1
33 #endif
34 
35 #include <x264.h>
36 #include <float.h>
37 #include <math.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 
42 typedef struct X264Context {
43  AVClass *class;
44  x264_param_t params;
45  x264_t *enc;
46  x264_picture_t pic;
48  int sei_size;
49  char *preset;
50  char *tune;
51  char *profile;
52  char *level;
54  char *wpredp;
55  char *x264opts;
56  float crf;
57  float crf_max;
58  int cqp;
59  int aq_mode;
60  float aq_strength;
61  char *psy_rd;
62  int psy;
64  int weightp;
65  int weightb;
66  int ssim;
69  int b_bias;
70  int b_pyramid;
72  int dct8x8;
74  int aud;
75  int mbtree;
76  char *deblock;
77  float cplxblur;
78  char *partitions;
81  char *stats;
82  int nal_hrd;
83  char *x264_params;
84 } X264Context;
85 
86 static void X264_log(void *p, int level, const char *fmt, va_list args)
87 {
88  static const int level_map[] = {
89  [X264_LOG_ERROR] = AV_LOG_ERROR,
90  [X264_LOG_WARNING] = AV_LOG_WARNING,
91  [X264_LOG_INFO] = AV_LOG_INFO,
92  [X264_LOG_DEBUG] = AV_LOG_DEBUG
93  };
94 
95  if (level < 0 || level > X264_LOG_DEBUG)
96  return;
97 
98  av_vlog(p, level_map[level], fmt, args);
99 }
100 
101 
103  const x264_nal_t *nals, int nnal)
104 {
105  X264Context *x4 = ctx->priv_data;
106  uint8_t *p;
107  int i, size = x4->sei_size, ret;
108 
109  if (!nnal)
110  return 0;
111 
112  for (i = 0; i < nnal; i++)
113  size += nals[i].i_payload;
114 
115  if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0)
116  return ret;
117 
118  p = pkt->data;
119 
120  /* Write the SEI as part of the first frame. */
121  if (x4->sei_size > 0 && nnal > 0) {
122  if (x4->sei_size > size) {
123  av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
124  return -1;
125  }
126  memcpy(p, x4->sei, x4->sei_size);
127  p += x4->sei_size;
128  x4->sei_size = 0;
129  av_freep(&x4->sei);
130  }
131 
132  for (i = 0; i < nnal; i++){
133  memcpy(p, nals[i].p_payload, nals[i].i_payload);
134  p += nals[i].i_payload;
135  }
136 
137  return 1;
138 }
139 
140 static int avfmt2_num_planes(int avfmt)
141 {
142  switch (avfmt) {
143  case AV_PIX_FMT_YUV420P:
144  case AV_PIX_FMT_YUVJ420P:
145  case AV_PIX_FMT_YUV420P9:
147  case AV_PIX_FMT_YUV444P:
148  return 3;
149 
150  case AV_PIX_FMT_BGR24:
151  case AV_PIX_FMT_RGB24:
152  return 1;
153 
154  default:
155  return 3;
156  }
157 }
158 
159 static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
160  int *got_packet)
161 {
162  X264Context *x4 = ctx->priv_data;
163  x264_nal_t *nal;
164  int nnal, i, ret;
165  x264_picture_t pic_out = {0};
166  AVFrameSideData *side_data;
167 
168  x264_picture_init( &x4->pic );
169  x4->pic.img.i_csp = x4->params.i_csp;
170  if (x264_bit_depth > 8)
171  x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
172  x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
173 
174  if (frame) {
175  for (i = 0; i < x4->pic.img.i_plane; i++) {
176  x4->pic.img.plane[i] = frame->data[i];
177  x4->pic.img.i_stride[i] = frame->linesize[i];
178  }
179 
180  x4->pic.i_pts = frame->pts;
181  x4->pic.i_type =
182  frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
183  frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
184  frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
185  X264_TYPE_AUTO;
186  if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
187  x4->params.b_tff = frame->top_field_first;
188  x264_encoder_reconfig(x4->enc, &x4->params);
189  }
190  if (x4->params.vui.i_sar_height != ctx->sample_aspect_ratio.den ||
191  x4->params.vui.i_sar_width != ctx->sample_aspect_ratio.num) {
192  x4->params.vui.i_sar_height = ctx->sample_aspect_ratio.den;
193  x4->params.vui.i_sar_width = ctx->sample_aspect_ratio.num;
194  x264_encoder_reconfig(x4->enc, &x4->params);
195  }
196 
197  if (x4->params.rc.i_vbv_buffer_size != ctx->rc_buffer_size / 1000 ||
198  x4->params.rc.i_vbv_max_bitrate != ctx->rc_max_rate / 1000) {
199  x4->params.rc.i_vbv_buffer_size = ctx->rc_buffer_size / 1000;
200  x4->params.rc.i_vbv_max_bitrate = ctx->rc_max_rate / 1000;
201  x264_encoder_reconfig(x4->enc, &x4->params);
202  }
203 
204  if (x4->params.rc.i_rc_method == X264_RC_ABR &&
205  x4->params.rc.i_bitrate != ctx->bit_rate / 1000) {
206  x4->params.rc.i_bitrate = ctx->bit_rate / 1000;
207  x264_encoder_reconfig(x4->enc, &x4->params);
208  }
209 
210  if (x4->crf >= 0 &&
211  x4->params.rc.i_rc_method == X264_RC_CRF &&
212  x4->params.rc.f_rf_constant != x4->crf) {
213  x4->params.rc.f_rf_constant = x4->crf;
214  x264_encoder_reconfig(x4->enc, &x4->params);
215  }
216 
217  if (x4->params.rc.i_rc_method == X264_RC_CQP &&
218  x4->cqp >= 0 &&
219  x4->params.rc.i_qp_constant != x4->cqp) {
220  x4->params.rc.i_qp_constant = x4->cqp;
221  x264_encoder_reconfig(x4->enc, &x4->params);
222  }
223 
224  if (x4->crf_max >= 0 &&
225  x4->params.rc.f_rf_constant_max != x4->crf_max) {
226  x4->params.rc.f_rf_constant_max = x4->crf_max;
227  x264_encoder_reconfig(x4->enc, &x4->params);
228  }
229 
231  if (side_data) {
232  AVStereo3D *stereo = (AVStereo3D *)side_data->data;
233  int fpa_type;
234 
235  switch (stereo->type) {
237  fpa_type = 0;
238  break;
239  case AV_STEREO3D_COLUMNS:
240  fpa_type = 1;
241  break;
242  case AV_STEREO3D_LINES:
243  fpa_type = 2;
244  break;
246  fpa_type = 3;
247  break;
249  fpa_type = 4;
250  break;
252  fpa_type = 5;
253  break;
254  default:
255  fpa_type = -1;
256  break;
257  }
258 
259  if (fpa_type != x4->params.i_frame_packing) {
260  x4->params.i_frame_packing = fpa_type;
261  x264_encoder_reconfig(x4->enc, &x4->params);
262  }
263  }
264  }
265  do {
266  if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
267  return -1;
268 
269  ret = encode_nals(ctx, pkt, nal, nnal);
270  if (ret < 0)
271  return -1;
272  } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
273 
274  pkt->pts = pic_out.i_pts;
275  pkt->dts = pic_out.i_dts;
276 
277  switch (pic_out.i_type) {
278  case X264_TYPE_IDR:
279  case X264_TYPE_I:
281  break;
282  case X264_TYPE_P:
284  break;
285  case X264_TYPE_B:
286  case X264_TYPE_BREF:
288  break;
289  }
290 
291  pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
292  if (ret)
293  ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
294 
295  *got_packet = ret;
296  return 0;
297 }
298 
300 {
301  X264Context *x4 = avctx->priv_data;
302 
303  av_freep(&avctx->extradata);
304  av_free(x4->sei);
305 
306  if (x4->enc)
307  x264_encoder_close(x4->enc);
308 
309  av_frame_free(&avctx->coded_frame);
310 
311  return 0;
312 }
313 
314 #define OPT_STR(opt, param) \
315  do { \
316  int ret; \
317  if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
318  if(ret == X264_PARAM_BAD_NAME) \
319  av_log(avctx, AV_LOG_ERROR, \
320  "bad option '%s': '%s'\n", opt, param); \
321  else \
322  av_log(avctx, AV_LOG_ERROR, \
323  "bad value for '%s': '%s'\n", opt, param); \
324  return -1; \
325  } \
326  } while (0)
327 
329 {
330  switch (pix_fmt) {
331  case AV_PIX_FMT_YUV420P:
332  case AV_PIX_FMT_YUVJ420P:
333  case AV_PIX_FMT_YUV420P9:
334  case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
335  case AV_PIX_FMT_YUV422P:
336  case AV_PIX_FMT_YUVJ422P:
337  case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
338  case AV_PIX_FMT_YUV444P:
339  case AV_PIX_FMT_YUVJ444P:
340  case AV_PIX_FMT_YUV444P9:
341  case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
342 #ifdef X264_CSP_BGR
343  case AV_PIX_FMT_BGR24:
344  return X264_CSP_BGR;
345 
346  case AV_PIX_FMT_RGB24:
347  return X264_CSP_RGB;
348 #endif
349  case AV_PIX_FMT_NV12: return X264_CSP_NV12;
350  case AV_PIX_FMT_NV16:
351  case AV_PIX_FMT_NV20: return X264_CSP_NV16;
352  };
353  return 0;
354 }
355 
356 #define PARSE_X264_OPT(name, var)\
357  if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
358  av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
359  return AVERROR(EINVAL);\
360  }
361 
362 static av_cold int X264_init(AVCodecContext *avctx)
363 {
364  X264Context *x4 = avctx->priv_data;
365  int sw,sh;
366 
367  if (avctx->global_quality > 0)
368  av_log(avctx, AV_LOG_WARNING, "-qscale is ignored, -crf is recommended.\n");
369 
370  x264_param_default(&x4->params);
371 
372  x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
373 
374  if (x4->preset || x4->tune)
375  if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
376  int i;
377  av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
378  av_log(avctx, AV_LOG_INFO, "Possible presets:");
379  for (i = 0; x264_preset_names[i]; i++)
380  av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
381  av_log(avctx, AV_LOG_INFO, "\n");
382  av_log(avctx, AV_LOG_INFO, "Possible tunes:");
383  for (i = 0; x264_tune_names[i]; i++)
384  av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
385  av_log(avctx, AV_LOG_INFO, "\n");
386  return AVERROR(EINVAL);
387  }
388 
389  if (avctx->level > 0)
390  x4->params.i_level_idc = avctx->level;
391 
392  x4->params.pf_log = X264_log;
393  x4->params.p_log_private = avctx;
394  x4->params.i_log_level = X264_LOG_DEBUG;
395  x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
396 
397  OPT_STR("weightp", x4->wpredp);
398 
399  if (avctx->bit_rate) {
400  x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
401  x4->params.rc.i_rc_method = X264_RC_ABR;
402  }
403  x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
404  x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
405  x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1;
406  if (avctx->flags & CODEC_FLAG_PASS2) {
407  x4->params.rc.b_stat_read = 1;
408  } else {
409  if (x4->crf >= 0) {
410  x4->params.rc.i_rc_method = X264_RC_CRF;
411  x4->params.rc.f_rf_constant = x4->crf;
412  } else if (x4->cqp >= 0) {
413  x4->params.rc.i_rc_method = X264_RC_CQP;
414  x4->params.rc.i_qp_constant = x4->cqp;
415  }
416 
417  if (x4->crf_max >= 0)
418  x4->params.rc.f_rf_constant_max = x4->crf_max;
419  }
420 
421  if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
422  (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
423  x4->params.rc.f_vbv_buffer_init =
424  (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
425  }
426 
427  OPT_STR("level", x4->level);
428 
429  if (avctx->i_quant_factor > 0)
430  x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
431  if (avctx->b_quant_factor > 0)
432  x4->params.rc.f_pb_factor = avctx->b_quant_factor;
433  if (avctx->chromaoffset)
434  x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset;
435 
436  if (avctx->me_method == ME_EPZS)
437  x4->params.analyse.i_me_method = X264_ME_DIA;
438  else if (avctx->me_method == ME_HEX)
439  x4->params.analyse.i_me_method = X264_ME_HEX;
440  else if (avctx->me_method == ME_UMH)
441  x4->params.analyse.i_me_method = X264_ME_UMH;
442  else if (avctx->me_method == ME_FULL)
443  x4->params.analyse.i_me_method = X264_ME_ESA;
444  else if (avctx->me_method == ME_TESA)
445  x4->params.analyse.i_me_method = X264_ME_TESA;
446 
447  if (avctx->gop_size >= 0)
448  x4->params.i_keyint_max = avctx->gop_size;
449  if (avctx->max_b_frames >= 0)
450  x4->params.i_bframe = avctx->max_b_frames;
451  if (avctx->scenechange_threshold >= 0)
452  x4->params.i_scenecut_threshold = avctx->scenechange_threshold;
453  if (avctx->qmin >= 0)
454  x4->params.rc.i_qp_min = avctx->qmin;
455  if (avctx->qmax >= 0)
456  x4->params.rc.i_qp_max = avctx->qmax;
457  if (avctx->max_qdiff >= 0)
458  x4->params.rc.i_qp_step = avctx->max_qdiff;
459  if (avctx->qblur >= 0)
460  x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
461  if (avctx->qcompress >= 0)
462  x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
463  if (avctx->refs >= 0)
464  x4->params.i_frame_reference = avctx->refs;
465  else if (x4->level) {
466  int i;
467  int mbn = FF_CEIL_RSHIFT(avctx->width, 4) * FF_CEIL_RSHIFT(avctx->height, 4);
468  int level_id = -1;
469  char *tail;
470  int scale = X264_BUILD < 129 ? 384 : 1;
471 
472  if (!strcmp(x4->level, "1b")) {
473  level_id = 9;
474  } else if (strlen(x4->level) <= 3){
475  level_id = av_strtod(x4->level, &tail) * 10 + 0.5;
476  if (*tail)
477  level_id = -1;
478  }
479  if (level_id <= 0)
480  av_log(avctx, AV_LOG_WARNING, "Failed to parse level\n");
481 
482  for (i = 0; i<x264_levels[i].level_idc; i++)
483  if (x264_levels[i].level_idc == level_id)
484  x4->params.i_frame_reference = av_clip(x264_levels[i].dpb / mbn / scale, 1, x4->params.i_frame_reference);
485  }
486 
487  if (avctx->trellis >= 0)
488  x4->params.analyse.i_trellis = avctx->trellis;
489  if (avctx->me_range >= 0)
490  x4->params.analyse.i_me_range = avctx->me_range;
491  if (avctx->noise_reduction >= 0)
492  x4->params.analyse.i_noise_reduction = avctx->noise_reduction;
493  if (avctx->me_subpel_quality >= 0)
494  x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
495  if (avctx->b_frame_strategy >= 0)
496  x4->params.i_bframe_adaptive = avctx->b_frame_strategy;
497  if (avctx->keyint_min >= 0)
498  x4->params.i_keyint_min = avctx->keyint_min;
499  if (avctx->coder_type >= 0)
500  x4->params.b_cabac = avctx->coder_type == FF_CODER_TYPE_AC;
501  if (avctx->me_cmp >= 0)
502  x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
503 
504  if (x4->aq_mode >= 0)
505  x4->params.rc.i_aq_mode = x4->aq_mode;
506  if (x4->aq_strength >= 0)
507  x4->params.rc.f_aq_strength = x4->aq_strength;
508  PARSE_X264_OPT("psy-rd", psy_rd);
509  PARSE_X264_OPT("deblock", deblock);
510  PARSE_X264_OPT("partitions", partitions);
511  PARSE_X264_OPT("stats", stats);
512  if (x4->psy >= 0)
513  x4->params.analyse.b_psy = x4->psy;
514  if (x4->rc_lookahead >= 0)
515  x4->params.rc.i_lookahead = x4->rc_lookahead;
516  if (x4->weightp >= 0)
517  x4->params.analyse.i_weighted_pred = x4->weightp;
518  if (x4->weightb >= 0)
519  x4->params.analyse.b_weighted_bipred = x4->weightb;
520  if (x4->cplxblur >= 0)
521  x4->params.rc.f_complexity_blur = x4->cplxblur;
522 
523  if (x4->ssim >= 0)
524  x4->params.analyse.b_ssim = x4->ssim;
525  if (x4->intra_refresh >= 0)
526  x4->params.b_intra_refresh = x4->intra_refresh;
527  if (x4->bluray_compat >= 0) {
528  x4->params.b_bluray_compat = x4->bluray_compat;
529  x4->params.b_vfr_input = 0;
530  }
531  if (x4->b_bias != INT_MIN)
532  x4->params.i_bframe_bias = x4->b_bias;
533  if (x4->b_pyramid >= 0)
534  x4->params.i_bframe_pyramid = x4->b_pyramid;
535  if (x4->mixed_refs >= 0)
536  x4->params.analyse.b_mixed_references = x4->mixed_refs;
537  if (x4->dct8x8 >= 0)
538  x4->params.analyse.b_transform_8x8 = x4->dct8x8;
539  if (x4->fast_pskip >= 0)
540  x4->params.analyse.b_fast_pskip = x4->fast_pskip;
541  if (x4->aud >= 0)
542  x4->params.b_aud = x4->aud;
543  if (x4->mbtree >= 0)
544  x4->params.rc.b_mb_tree = x4->mbtree;
545  if (x4->direct_pred >= 0)
546  x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
547 
548  if (x4->slice_max_size >= 0)
549  x4->params.i_slice_max_size = x4->slice_max_size;
550  else {
551  /*
552  * Allow x264 to be instructed through AVCodecContext about the maximum
553  * size of the RTP payload. For example, this enables the production of
554  * payload suitable for the H.264 RTP packetization-mode 0 i.e. single
555  * NAL unit per RTP packet.
556  */
557  if (avctx->rtp_payload_size)
558  x4->params.i_slice_max_size = avctx->rtp_payload_size;
559  }
560 
561  if (x4->fastfirstpass)
562  x264_param_apply_fastfirstpass(&x4->params);
563 
564  /* Allow specifying the x264 profile through AVCodecContext. */
565  if (!x4->profile)
566  switch (avctx->profile) {
568  x4->profile = av_strdup("baseline");
569  break;
571  x4->profile = av_strdup("high");
572  break;
574  x4->profile = av_strdup("high10");
575  break;
577  x4->profile = av_strdup("high422");
578  break;
580  x4->profile = av_strdup("high444");
581  break;
583  x4->profile = av_strdup("main");
584  break;
585  default:
586  break;
587  }
588 
589  if (x4->nal_hrd >= 0)
590  x4->params.i_nal_hrd = x4->nal_hrd;
591 
592  if (x4->profile)
593  if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
594  int i;
595  av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
596  av_log(avctx, AV_LOG_INFO, "Possible profiles:");
597  for (i = 0; x264_profile_names[i]; i++)
598  av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
599  av_log(avctx, AV_LOG_INFO, "\n");
600  return AVERROR(EINVAL);
601  }
602 
603  x4->params.i_width = avctx->width;
604  x4->params.i_height = avctx->height;
605  av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
606  x4->params.vui.i_sar_width = sw;
607  x4->params.vui.i_sar_height = sh;
608  x4->params.i_timebase_den = avctx->time_base.den;
609  x4->params.i_timebase_num = avctx->time_base.num;
610  x4->params.i_fps_num = avctx->time_base.den;
611  x4->params.i_fps_den = avctx->time_base.num * avctx->ticks_per_frame;
612 
613  x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR;
614 
615  x4->params.i_threads = avctx->thread_count;
616  if (avctx->thread_type)
617  x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
618 
619  x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT;
620 
621  x4->params.b_open_gop = !(avctx->flags & CODEC_FLAG_CLOSED_GOP);
622 
623  x4->params.i_slice_count = avctx->slices;
624 
625  x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
626  avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
627  avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
628  avctx->color_range == AVCOL_RANGE_JPEG;
629 
630  if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED)
631  x4->params.vui.i_colmatrix = avctx->colorspace;
633  x4->params.vui.i_colorprim = avctx->color_primaries;
634  if (avctx->color_trc != AVCOL_TRC_UNSPECIFIED)
635  x4->params.vui.i_transfer = avctx->color_trc;
636 
637  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER)
638  x4->params.b_repeat_headers = 0;
639 
640  if(x4->x264opts){
641  const char *p= x4->x264opts;
642  while(p){
643  char param[256]={0}, val[256]={0};
644  if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
645  OPT_STR(param, "1");
646  }else
647  OPT_STR(param, val);
648  p= strchr(p, ':');
649  p+=!!p;
650  }
651  }
652 
653  if (x4->x264_params) {
654  AVDictionary *dict = NULL;
655  AVDictionaryEntry *en = NULL;
656 
657  if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
658  while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
659  if (x264_param_parse(&x4->params, en->key, en->value) < 0)
660  av_log(avctx, AV_LOG_WARNING,
661  "Error parsing option '%s = %s'.\n",
662  en->key, en->value);
663  }
664 
665  av_dict_free(&dict);
666  }
667  }
668 
669  // update AVCodecContext with x264 parameters
670  avctx->has_b_frames = x4->params.i_bframe ?
671  x4->params.i_bframe_pyramid ? 2 : 1 : 0;
672  if (avctx->max_b_frames < 0)
673  avctx->max_b_frames = 0;
674 
675  avctx->bit_rate = x4->params.rc.i_bitrate*1000;
676 
677  x4->enc = x264_encoder_open(&x4->params);
678  if (!x4->enc)
679  return -1;
680 
681  avctx->coded_frame = av_frame_alloc();
682  if (!avctx->coded_frame)
683  return AVERROR(ENOMEM);
684 
685  if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
686  x264_nal_t *nal;
687  uint8_t *p;
688  int nnal, s, i;
689 
690  s = x264_encoder_headers(x4->enc, &nal, &nnal);
691  avctx->extradata = p = av_malloc(s);
692 
693  for (i = 0; i < nnal; i++) {
694  /* Don't put the SEI in extradata. */
695  if (nal[i].i_type == NAL_SEI) {
696  av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
697  x4->sei_size = nal[i].i_payload;
698  x4->sei = av_malloc(x4->sei_size);
699  memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
700  continue;
701  }
702  memcpy(p, nal[i].p_payload, nal[i].i_payload);
703  p += nal[i].i_payload;
704  }
705  avctx->extradata_size = p - avctx->extradata;
706  }
707 
708  return 0;
709 }
710 
711 static const enum AVPixelFormat pix_fmts_8bit[] = {
721 };
722 static const enum AVPixelFormat pix_fmts_9bit[] = {
726 };
727 static const enum AVPixelFormat pix_fmts_10bit[] = {
733 };
734 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
735 #ifdef X264_CSP_BGR
738 #endif
740 };
741 
742 static av_cold void X264_init_static(AVCodec *codec)
743 {
744  if (x264_bit_depth == 8)
745  codec->pix_fmts = pix_fmts_8bit;
746  else if (x264_bit_depth == 9)
747  codec->pix_fmts = pix_fmts_9bit;
748  else if (x264_bit_depth == 10)
749  codec->pix_fmts = pix_fmts_10bit;
750 }
751 
752 #define OFFSET(x) offsetof(X264Context, x)
753 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
754 static const AVOption options[] = {
755  { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
756  { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
757  { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
758  { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE},
759  {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
760  {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
761  {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
762  {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
763  { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
764  { "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 },
765  { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
766  { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
767  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
768  { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
769  { "autovariance", "Auto-variance AQ (experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
770  { "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},
771  { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
772  { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
773  { "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 },
774  { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
775  { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
776  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
777  { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
778  { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
779  { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
780  { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
781  { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
782  { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
783  { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
784  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
785  { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
786  { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
787  { "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 },
788  { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
789  { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
790  { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
791  { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE},
792  { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
793  { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
794  { "partitions", "A comma-separated list of partitions to consider. "
795  "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
796  { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
797  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
798  { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
799  { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
800  { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
801  { "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 },
802  { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
803  { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
804  "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
805  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
806  { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
807  { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
808  { "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 },
809  { NULL },
810 };
811 
812 static const AVClass x264_class = {
813  .class_name = "libx264",
814  .item_name = av_default_item_name,
815  .option = options,
816  .version = LIBAVUTIL_VERSION_INT,
817 };
818 
819 static const AVClass rgbclass = {
820  .class_name = "libx264rgb",
821  .item_name = av_default_item_name,
822  .option = options,
823  .version = LIBAVUTIL_VERSION_INT,
824 };
825 
826 static const AVCodecDefault x264_defaults[] = {
827  { "b", "0" },
828  { "bf", "-1" },
829  { "flags2", "0" },
830  { "g", "-1" },
831  { "i_qfactor", "-1" },
832  { "b_qfactor", "-1" },
833  { "qmin", "-1" },
834  { "qmax", "-1" },
835  { "qdiff", "-1" },
836  { "qblur", "-1" },
837  { "qcomp", "-1" },
838 // { "rc_lookahead", "-1" },
839  { "refs", "-1" },
840  { "sc_threshold", "-1" },
841  { "trellis", "-1" },
842  { "nr", "-1" },
843  { "me_range", "-1" },
844  { "me_method", "-1" },
845  { "subq", "-1" },
846  { "b_strategy", "-1" },
847  { "keyint_min", "-1" },
848  { "coder", "-1" },
849  { "cmp", "-1" },
850  { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
851  { "thread_type", "0" },
852  { "flags", "+cgop" },
853  { "rc_init_occupancy","-1" },
854  { NULL },
855 };
856 
858  .name = "libx264",
859  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
860  .type = AVMEDIA_TYPE_VIDEO,
861  .id = AV_CODEC_ID_H264,
862  .priv_data_size = sizeof(X264Context),
863  .init = X264_init,
864  .encode2 = X264_frame,
865  .close = X264_close,
866  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
867  .priv_class = &x264_class,
868  .defaults = x264_defaults,
870 };
871 
873  .name = "libx264rgb",
874  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
875  .type = AVMEDIA_TYPE_VIDEO,
876  .id = AV_CODEC_ID_H264,
877  .priv_data_size = sizeof(X264Context),
878  .init = X264_init,
879  .encode2 = X264_frame,
880  .close = X264_close,
881  .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
882  .priv_class = &rgbclass,
883  .defaults = x264_defaults,
884  .pix_fmts = pix_fmts_8bit_rgb,
885 };