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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 "libavutil/intreadwrite.h"
29 #include "avcodec.h"
30 #include "internal.h"
31 
32 #if defined(_MSC_VER)
33 #define X264_API_IMPORTS 1
34 #endif
35 
36 #include <x264.h>
37 #include <float.h>
38 #include <math.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 
43 typedef struct X264Context {
44  AVClass *class;
45  x264_param_t params;
46  x264_t *enc;
47  x264_picture_t pic;
49  int sei_size;
50  char *preset;
51  char *tune;
52  char *profile;
53  char *level;
55  char *wpredp;
56  char *x264opts;
57  float crf;
58  float crf_max;
59  int cqp;
60  int aq_mode;
61  float aq_strength;
62  char *psy_rd;
63  int psy;
65  int weightp;
66  int weightb;
67  int ssim;
70  int b_bias;
71  int b_pyramid;
73  int dct8x8;
75  int aud;
76  int mbtree;
77  char *deblock;
78  float cplxblur;
79  char *partitions;
82  char *stats;
83  int nal_hrd;
87  int coder;
88  int a53_cc;
93 
94  char *x264_params;
95 } X264Context;
96 
97 static void X264_log(void *p, int level, const char *fmt, va_list args)
98 {
99  static const int level_map[] = {
100  [X264_LOG_ERROR] = AV_LOG_ERROR,
101  [X264_LOG_WARNING] = AV_LOG_WARNING,
102  [X264_LOG_INFO] = AV_LOG_INFO,
103  [X264_LOG_DEBUG] = AV_LOG_DEBUG
104  };
105 
106  if (level < 0 || level > X264_LOG_DEBUG)
107  return;
108 
109  av_vlog(p, level_map[level], fmt, args);
110 }
111 
112 
114  const x264_nal_t *nals, int nnal)
115 {
116  X264Context *x4 = ctx->priv_data;
117  uint8_t *p;
118  int i, size = x4->sei_size, ret;
119 
120  if (!nnal)
121  return 0;
122 
123  for (i = 0; i < nnal; i++)
124  size += nals[i].i_payload;
125 
126  if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0)
127  return ret;
128 
129  p = pkt->data;
130 
131  /* Write the SEI as part of the first frame. */
132  if (x4->sei_size > 0 && nnal > 0) {
133  if (x4->sei_size > size) {
134  av_log(ctx, AV_LOG_ERROR, "Error: nal buffer is too small\n");
135  return -1;
136  }
137  memcpy(p, x4->sei, x4->sei_size);
138  p += x4->sei_size;
139  x4->sei_size = 0;
140  av_freep(&x4->sei);
141  }
142 
143  for (i = 0; i < nnal; i++){
144  memcpy(p, nals[i].p_payload, nals[i].i_payload);
145  p += nals[i].i_payload;
146  }
147 
148  return 1;
149 }
150 
151 static int avfmt2_num_planes(int avfmt)
152 {
153  switch (avfmt) {
154  case AV_PIX_FMT_YUV420P:
155  case AV_PIX_FMT_YUVJ420P:
156  case AV_PIX_FMT_YUV420P9:
158  case AV_PIX_FMT_YUV444P:
159  return 3;
160 
161  case AV_PIX_FMT_BGR0:
162  case AV_PIX_FMT_BGR24:
163  case AV_PIX_FMT_RGB24:
164  return 1;
165 
166  default:
167  return 3;
168  }
169 }
170 
172 {
173  X264Context *x4 = ctx->priv_data;
174  AVFrameSideData *side_data;
175 
176 
177  if (x4->avcintra_class < 0) {
178  if (x4->params.b_interlaced && x4->params.b_tff != frame->top_field_first) {
179 
180  x4->params.b_tff = frame->top_field_first;
181  x264_encoder_reconfig(x4->enc, &x4->params);
182  }
183  if (x4->params.vui.i_sar_height*ctx->sample_aspect_ratio.num != ctx->sample_aspect_ratio.den * x4->params.vui.i_sar_width) {
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  if (x4->params.rc.i_vbv_buffer_size != ctx->rc_buffer_size / 1000 ||
190  x4->params.rc.i_vbv_max_bitrate != ctx->rc_max_rate / 1000) {
191  x4->params.rc.i_vbv_buffer_size = ctx->rc_buffer_size / 1000;
192  x4->params.rc.i_vbv_max_bitrate = ctx->rc_max_rate / 1000;
193  x264_encoder_reconfig(x4->enc, &x4->params);
194  }
195 
196  if (x4->params.rc.i_rc_method == X264_RC_ABR &&
197  x4->params.rc.i_bitrate != ctx->bit_rate / 1000) {
198  x4->params.rc.i_bitrate = ctx->bit_rate / 1000;
199  x264_encoder_reconfig(x4->enc, &x4->params);
200  }
201 
202  if (x4->crf >= 0 &&
203  x4->params.rc.i_rc_method == X264_RC_CRF &&
204  x4->params.rc.f_rf_constant != x4->crf) {
205  x4->params.rc.f_rf_constant = x4->crf;
206  x264_encoder_reconfig(x4->enc, &x4->params);
207  }
208 
209  if (x4->params.rc.i_rc_method == X264_RC_CQP &&
210  x4->cqp >= 0 &&
211  x4->params.rc.i_qp_constant != x4->cqp) {
212  x4->params.rc.i_qp_constant = x4->cqp;
213  x264_encoder_reconfig(x4->enc, &x4->params);
214  }
215 
216  if (x4->crf_max >= 0 &&
217  x4->params.rc.f_rf_constant_max != x4->crf_max) {
218  x4->params.rc.f_rf_constant_max = x4->crf_max;
219  x264_encoder_reconfig(x4->enc, &x4->params);
220  }
221  }
222 
224  if (side_data) {
225  AVStereo3D *stereo = (AVStereo3D *)side_data->data;
226  int fpa_type;
227 
228  switch (stereo->type) {
230  fpa_type = 0;
231  break;
232  case AV_STEREO3D_COLUMNS:
233  fpa_type = 1;
234  break;
235  case AV_STEREO3D_LINES:
236  fpa_type = 2;
237  break;
239  fpa_type = 3;
240  break;
242  fpa_type = 4;
243  break;
245  fpa_type = 5;
246  break;
247 #if X264_BUILD >= 145
248  case AV_STEREO3D_2D:
249  fpa_type = 6;
250  break;
251 #endif
252  default:
253  fpa_type = -1;
254  break;
255  }
256 
257  /* Inverted mode is not supported by x264 */
258  if (stereo->flags & AV_STEREO3D_FLAG_INVERT) {
259  av_log(ctx, AV_LOG_WARNING,
260  "Ignoring unsupported inverted stereo value %d\n", fpa_type);
261  fpa_type = -1;
262  }
263 
264  if (fpa_type != x4->params.i_frame_packing) {
265  x4->params.i_frame_packing = fpa_type;
266  x264_encoder_reconfig(x4->enc, &x4->params);
267  }
268  }
269 }
270 
272  int *got_packet)
273 {
274  X264Context *x4 = ctx->priv_data;
275  x264_nal_t *nal;
276  int nnal, i, ret;
277  x264_picture_t pic_out = {0};
278  int pict_type;
279  AVFrameSideData *side_data;
280 
281  x264_picture_init( &x4->pic );
282  x4->pic.img.i_csp = x4->params.i_csp;
283  if (x264_bit_depth > 8)
284  x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
285  x4->pic.img.i_plane = avfmt2_num_planes(ctx->pix_fmt);
286 
287  if (frame) {
288  for (i = 0; i < x4->pic.img.i_plane; i++) {
289  x4->pic.img.plane[i] = frame->data[i];
290  x4->pic.img.i_stride[i] = frame->linesize[i];
291  }
292 
293  x4->pic.i_pts = frame->pts;
294 
295  switch (frame->pict_type) {
296  case AV_PICTURE_TYPE_I:
297  x4->pic.i_type = x4->forced_idr >= 0 ? X264_TYPE_IDR
298  : X264_TYPE_KEYFRAME;
299  break;
300  case AV_PICTURE_TYPE_P:
301  x4->pic.i_type = X264_TYPE_P;
302  break;
303  case AV_PICTURE_TYPE_B:
304  x4->pic.i_type = X264_TYPE_B;
305  break;
306  default:
307  x4->pic.i_type = X264_TYPE_AUTO;
308  break;
309  }
310  reconfig_encoder(ctx, frame);
311 
312  if (x4->a53_cc) {
313  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
314  if (side_data) {
315  x4->pic.extra_sei.payloads = av_mallocz(sizeof(x4->pic.extra_sei.payloads[0]));
316  if (x4->pic.extra_sei.payloads == NULL) {
317  av_log(ctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
318  goto skip_a53cc;
319  }
320  x4->pic.extra_sei.sei_free = av_free;
321 
322  x4->pic.extra_sei.payloads[0].payload_size = side_data->size + 11;
323  x4->pic.extra_sei.payloads[0].payload = av_mallocz(x4->pic.extra_sei.payloads[0].payload_size);
324  if (x4->pic.extra_sei.payloads[0].payload == NULL) {
325  av_log(ctx, AV_LOG_ERROR, "Not enough memory for closed captions, skipping\n");
326  av_freep(&x4->pic.extra_sei.payloads);
327  goto skip_a53cc;
328  }
329  x4->pic.extra_sei.num_payloads = 1;
330  x4->pic.extra_sei.payloads[0].payload_type = 4;
331  memcpy(x4->pic.extra_sei.payloads[0].payload + 10, side_data->data, side_data->size);
332  x4->pic.extra_sei.payloads[0].payload[0] = 181;
333  x4->pic.extra_sei.payloads[0].payload[1] = 0;
334  x4->pic.extra_sei.payloads[0].payload[2] = 49;
335 
336  /**
337  * 'GA94' is standard in North America for ATSC, but hard coding
338  * this style may not be the right thing to do -- other formats
339  * do exist. This information is not available in the side_data
340  * so we are going with this right now.
341  */
342  AV_WL32(x4->pic.extra_sei.payloads[0].payload + 3,
343  MKTAG('G', 'A', '9', '4'));
344  x4->pic.extra_sei.payloads[0].payload[7] = 3;
345  x4->pic.extra_sei.payloads[0].payload[8] =
346  ((side_data->size/3) & 0x1f) | 0x40;
347  x4->pic.extra_sei.payloads[0].payload[9] = 0;
348  x4->pic.extra_sei.payloads[0].payload[side_data->size+10] = 255;
349  }
350  }
351  }
352 skip_a53cc:
353  do {
354  if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)
355  return AVERROR_EXTERNAL;
356 
357  ret = encode_nals(ctx, pkt, nal, nnal);
358  if (ret < 0)
359  return ret;
360  } while (!ret && !frame && x264_encoder_delayed_frames(x4->enc));
361 
362  pkt->pts = pic_out.i_pts;
363  pkt->dts = pic_out.i_dts;
364 
365 
366  switch (pic_out.i_type) {
367  case X264_TYPE_IDR:
368  case X264_TYPE_I:
369  pict_type = AV_PICTURE_TYPE_I;
370  break;
371  case X264_TYPE_P:
372  pict_type = AV_PICTURE_TYPE_P;
373  break;
374  case X264_TYPE_B:
375  case X264_TYPE_BREF:
376  pict_type = AV_PICTURE_TYPE_B;
377  break;
378  default:
379  pict_type = AV_PICTURE_TYPE_NONE;
380  }
381 #if FF_API_CODED_FRAME
383  ctx->coded_frame->pict_type = pict_type;
385 #endif
386 
387  pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
388  if (ret) {
389  ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);
390 
391 #if FF_API_CODED_FRAME
393  ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
395 #endif
396  }
397 
398  *got_packet = ret;
399  return 0;
400 }
401 
403 {
404  X264Context *x4 = avctx->priv_data;
405 
406  av_freep(&avctx->extradata);
407  av_freep(&x4->sei);
408 
409  if (x4->enc) {
410  x264_encoder_close(x4->enc);
411  x4->enc = NULL;
412  }
413 
414  return 0;
415 }
416 
417 #define OPT_STR(opt, param) \
418  do { \
419  int ret; \
420  if ((ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
421  if(ret == X264_PARAM_BAD_NAME) \
422  av_log(avctx, AV_LOG_ERROR, \
423  "bad option '%s': '%s'\n", opt, param); \
424  else \
425  av_log(avctx, AV_LOG_ERROR, \
426  "bad value for '%s': '%s'\n", opt, param); \
427  return -1; \
428  } \
429  } while (0)
430 
432 {
433  switch (pix_fmt) {
434  case AV_PIX_FMT_YUV420P:
435  case AV_PIX_FMT_YUVJ420P:
436  case AV_PIX_FMT_YUV420P9:
437  case AV_PIX_FMT_YUV420P10: return X264_CSP_I420;
438  case AV_PIX_FMT_YUV422P:
439  case AV_PIX_FMT_YUVJ422P:
440  case AV_PIX_FMT_YUV422P10: return X264_CSP_I422;
441  case AV_PIX_FMT_YUV444P:
442  case AV_PIX_FMT_YUVJ444P:
443  case AV_PIX_FMT_YUV444P9:
444  case AV_PIX_FMT_YUV444P10: return X264_CSP_I444;
445 #ifdef X264_CSP_BGR
446  case AV_PIX_FMT_BGR0:
447  return X264_CSP_BGRA;
448  case AV_PIX_FMT_BGR24:
449  return X264_CSP_BGR;
450 
451  case AV_PIX_FMT_RGB24:
452  return X264_CSP_RGB;
453 #endif
454  case AV_PIX_FMT_NV12: return X264_CSP_NV12;
455  case AV_PIX_FMT_NV16:
456  case AV_PIX_FMT_NV20: return X264_CSP_NV16;
457 #ifdef X264_CSP_NV21
458  case AV_PIX_FMT_NV21: return X264_CSP_NV21;
459 #endif
460  };
461  return 0;
462 }
463 
464 #define PARSE_X264_OPT(name, var)\
465  if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\
466  av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\
467  return AVERROR(EINVAL);\
468  }
469 
470 static av_cold int X264_init(AVCodecContext *avctx)
471 {
472  X264Context *x4 = avctx->priv_data;
473  AVCPBProperties *cpb_props;
474  int sw,sh;
475 
476  if (avctx->global_quality > 0)
477  av_log(avctx, AV_LOG_WARNING, "-qscale is ignored, -crf is recommended.\n");
478 
479 #if CONFIG_LIBX262_ENCODER
480  if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
481  x4->params.b_mpeg2 = 1;
482  x264_param_default_mpeg2(&x4->params);
483  } else
484 #endif
485  x264_param_default(&x4->params);
486 
487  x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;
488 
489  if (x4->preset || x4->tune)
490  if (x264_param_default_preset(&x4->params, x4->preset, x4->tune) < 0) {
491  int i;
492  av_log(avctx, AV_LOG_ERROR, "Error setting preset/tune %s/%s.\n", x4->preset, x4->tune);
493  av_log(avctx, AV_LOG_INFO, "Possible presets:");
494  for (i = 0; x264_preset_names[i]; i++)
495  av_log(avctx, AV_LOG_INFO, " %s", x264_preset_names[i]);
496  av_log(avctx, AV_LOG_INFO, "\n");
497  av_log(avctx, AV_LOG_INFO, "Possible tunes:");
498  for (i = 0; x264_tune_names[i]; i++)
499  av_log(avctx, AV_LOG_INFO, " %s", x264_tune_names[i]);
500  av_log(avctx, AV_LOG_INFO, "\n");
501  return AVERROR(EINVAL);
502  }
503 
504  if (avctx->level > 0)
505  x4->params.i_level_idc = avctx->level;
506 
507  x4->params.pf_log = X264_log;
508  x4->params.p_log_private = avctx;
509  x4->params.i_log_level = X264_LOG_DEBUG;
510  x4->params.i_csp = convert_pix_fmt(avctx->pix_fmt);
511 
512  PARSE_X264_OPT("weightp", wpredp);
513 
514  if (avctx->bit_rate) {
515  x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
516  x4->params.rc.i_rc_method = X264_RC_ABR;
517  }
518  x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
519  x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
520  x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1;
521  if (avctx->flags & AV_CODEC_FLAG_PASS2) {
522  x4->params.rc.b_stat_read = 1;
523  } else {
524  if (x4->crf >= 0) {
525  x4->params.rc.i_rc_method = X264_RC_CRF;
526  x4->params.rc.f_rf_constant = x4->crf;
527  } else if (x4->cqp >= 0) {
528  x4->params.rc.i_rc_method = X264_RC_CQP;
529  x4->params.rc.i_qp_constant = x4->cqp;
530  }
531 
532  if (x4->crf_max >= 0)
533  x4->params.rc.f_rf_constant_max = x4->crf_max;
534  }
535 
536  if (avctx->rc_buffer_size && avctx->rc_initial_buffer_occupancy > 0 &&
537  (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
538  x4->params.rc.f_vbv_buffer_init =
539  (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
540  }
541 
542  PARSE_X264_OPT("level", level);
543 
544  if (avctx->i_quant_factor > 0)
545  x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
546  if (avctx->b_quant_factor > 0)
547  x4->params.rc.f_pb_factor = avctx->b_quant_factor;
548 
549 #if FF_API_PRIVATE_OPT
551  if (avctx->chromaoffset >= 0)
552  x4->chroma_offset = avctx->chromaoffset;
554 #endif
555  if (x4->chroma_offset >= 0)
556  x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;
557 
558  if (avctx->gop_size >= 0)
559  x4->params.i_keyint_max = avctx->gop_size;
560  if (avctx->max_b_frames >= 0)
561  x4->params.i_bframe = avctx->max_b_frames;
562 
563 #if FF_API_PRIVATE_OPT
565  if (avctx->scenechange_threshold >= 0)
568 #endif
569  if (x4->scenechange_threshold >= 0)
570  x4->params.i_scenecut_threshold = x4->scenechange_threshold;
571 
572  if (avctx->qmin >= 0)
573  x4->params.rc.i_qp_min = avctx->qmin;
574  if (avctx->qmax >= 0)
575  x4->params.rc.i_qp_max = avctx->qmax;
576  if (avctx->max_qdiff >= 0)
577  x4->params.rc.i_qp_step = avctx->max_qdiff;
578  if (avctx->qblur >= 0)
579  x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
580  if (avctx->qcompress >= 0)
581  x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
582  if (avctx->refs >= 0)
583  x4->params.i_frame_reference = avctx->refs;
584  else if (x4->level) {
585  int i;
586  int mbn = AV_CEIL_RSHIFT(avctx->width, 4) * AV_CEIL_RSHIFT(avctx->height, 4);
587  int level_id = -1;
588  char *tail;
589  int scale = X264_BUILD < 129 ? 384 : 1;
590 
591  if (!strcmp(x4->level, "1b")) {
592  level_id = 9;
593  } else if (strlen(x4->level) <= 3){
594  level_id = av_strtod(x4->level, &tail) * 10 + 0.5;
595  if (*tail)
596  level_id = -1;
597  }
598  if (level_id <= 0)
599  av_log(avctx, AV_LOG_WARNING, "Failed to parse level\n");
600 
601  for (i = 0; i<x264_levels[i].level_idc; i++)
602  if (x264_levels[i].level_idc == level_id)
603  x4->params.i_frame_reference = av_clip(x264_levels[i].dpb / mbn / scale, 1, x4->params.i_frame_reference);
604  }
605 
606  if (avctx->trellis >= 0)
607  x4->params.analyse.i_trellis = avctx->trellis;
608  if (avctx->me_range >= 0)
609  x4->params.analyse.i_me_range = avctx->me_range;
610 #if FF_API_PRIVATE_OPT
612  if (avctx->noise_reduction >= 0)
613  x4->noise_reduction = avctx->noise_reduction;
615 #endif
616  if (x4->noise_reduction >= 0)
617  x4->params.analyse.i_noise_reduction = x4->noise_reduction;
618  if (avctx->me_subpel_quality >= 0)
619  x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
620 #if FF_API_PRIVATE_OPT
622  if (avctx->b_frame_strategy >= 0)
623  x4->b_frame_strategy = avctx->b_frame_strategy;
625 #endif
626  if (avctx->keyint_min >= 0)
627  x4->params.i_keyint_min = avctx->keyint_min;
628 #if FF_API_CODER_TYPE
630  if (avctx->coder_type >= 0)
631  x4->coder = avctx->coder_type == FF_CODER_TYPE_AC;
633 #endif
634  if (avctx->me_cmp >= 0)
635  x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
636 
637  if (x4->aq_mode >= 0)
638  x4->params.rc.i_aq_mode = x4->aq_mode;
639  if (x4->aq_strength >= 0)
640  x4->params.rc.f_aq_strength = x4->aq_strength;
641  PARSE_X264_OPT("psy-rd", psy_rd);
642  PARSE_X264_OPT("deblock", deblock);
643  PARSE_X264_OPT("partitions", partitions);
644  PARSE_X264_OPT("stats", stats);
645  if (x4->psy >= 0)
646  x4->params.analyse.b_psy = x4->psy;
647  if (x4->rc_lookahead >= 0)
648  x4->params.rc.i_lookahead = x4->rc_lookahead;
649  if (x4->weightp >= 0)
650  x4->params.analyse.i_weighted_pred = x4->weightp;
651  if (x4->weightb >= 0)
652  x4->params.analyse.b_weighted_bipred = x4->weightb;
653  if (x4->cplxblur >= 0)
654  x4->params.rc.f_complexity_blur = x4->cplxblur;
655 
656  if (x4->ssim >= 0)
657  x4->params.analyse.b_ssim = x4->ssim;
658  if (x4->intra_refresh >= 0)
659  x4->params.b_intra_refresh = x4->intra_refresh;
660  if (x4->bluray_compat >= 0) {
661  x4->params.b_bluray_compat = x4->bluray_compat;
662  x4->params.b_vfr_input = 0;
663  }
664  if (x4->avcintra_class >= 0)
665 #if X264_BUILD >= 142
666  x4->params.i_avcintra_class = x4->avcintra_class;
667 #else
668  av_log(avctx, AV_LOG_ERROR,
669  "x264 too old for AVC Intra, at least version 142 needed\n");
670 #endif
671  if (x4->b_bias != INT_MIN)
672  x4->params.i_bframe_bias = x4->b_bias;
673  if (x4->b_pyramid >= 0)
674  x4->params.i_bframe_pyramid = x4->b_pyramid;
675  if (x4->mixed_refs >= 0)
676  x4->params.analyse.b_mixed_references = x4->mixed_refs;
677  if (x4->dct8x8 >= 0)
678  x4->params.analyse.b_transform_8x8 = x4->dct8x8;
679  if (x4->fast_pskip >= 0)
680  x4->params.analyse.b_fast_pskip = x4->fast_pskip;
681  if (x4->aud >= 0)
682  x4->params.b_aud = x4->aud;
683  if (x4->mbtree >= 0)
684  x4->params.rc.b_mb_tree = x4->mbtree;
685  if (x4->direct_pred >= 0)
686  x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
687 
688  if (x4->slice_max_size >= 0)
689  x4->params.i_slice_max_size = x4->slice_max_size;
690 
691  if (x4->fastfirstpass)
692  x264_param_apply_fastfirstpass(&x4->params);
693 
694  /* Allow specifying the x264 profile through AVCodecContext. */
695  if (!x4->profile)
696  switch (avctx->profile) {
698  x4->profile = av_strdup("baseline");
699  break;
701  x4->profile = av_strdup("high");
702  break;
704  x4->profile = av_strdup("high10");
705  break;
707  x4->profile = av_strdup("high422");
708  break;
710  x4->profile = av_strdup("high444");
711  break;
713  x4->profile = av_strdup("main");
714  break;
715  default:
716  break;
717  }
718 
719  if (x4->nal_hrd >= 0)
720  x4->params.i_nal_hrd = x4->nal_hrd;
721 
722  if (x4->motion_est >= 0) {
723  x4->params.analyse.i_me_method = x4->motion_est;
724 #if FF_API_MOTION_EST
726  } else {
727  if (avctx->me_method == ME_EPZS)
728  x4->params.analyse.i_me_method = X264_ME_DIA;
729  else if (avctx->me_method == ME_HEX)
730  x4->params.analyse.i_me_method = X264_ME_HEX;
731  else if (avctx->me_method == ME_UMH)
732  x4->params.analyse.i_me_method = X264_ME_UMH;
733  else if (avctx->me_method == ME_FULL)
734  x4->params.analyse.i_me_method = X264_ME_ESA;
735  else if (avctx->me_method == ME_TESA)
736  x4->params.analyse.i_me_method = X264_ME_TESA;
738 #endif
739  }
740 
741  if (x4->coder >= 0)
742  x4->params.b_cabac = x4->coder;
743 
744  if (x4->b_frame_strategy >= 0)
745  x4->params.i_bframe_adaptive = x4->b_frame_strategy;
746 
747  if (x4->profile)
748  if (x264_param_apply_profile(&x4->params, x4->profile) < 0) {
749  int i;
750  av_log(avctx, AV_LOG_ERROR, "Error setting profile %s.\n", x4->profile);
751  av_log(avctx, AV_LOG_INFO, "Possible profiles:");
752  for (i = 0; x264_profile_names[i]; i++)
753  av_log(avctx, AV_LOG_INFO, " %s", x264_profile_names[i]);
754  av_log(avctx, AV_LOG_INFO, "\n");
755  return AVERROR(EINVAL);
756  }
757 
758  x4->params.i_width = avctx->width;
759  x4->params.i_height = avctx->height;
760  av_reduce(&sw, &sh, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 4096);
761  x4->params.vui.i_sar_width = sw;
762  x4->params.vui.i_sar_height = sh;
763  x4->params.i_timebase_den = avctx->time_base.den;
764  x4->params.i_timebase_num = avctx->time_base.num;
765  x4->params.i_fps_num = avctx->time_base.den;
766  x4->params.i_fps_den = avctx->time_base.num * avctx->ticks_per_frame;
767 
768  x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
769 
770  x4->params.i_threads = avctx->thread_count;
771  if (avctx->thread_type)
772  x4->params.b_sliced_threads = avctx->thread_type == FF_THREAD_SLICE;
773 
774  x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;
775 
776  x4->params.b_open_gop = !(avctx->flags & AV_CODEC_FLAG_CLOSED_GOP);
777 
778  x4->params.i_slice_count = avctx->slices;
779 
780  x4->params.vui.b_fullrange = avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
781  avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
782  avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
783  avctx->color_range == AVCOL_RANGE_JPEG;
784 
785  if (avctx->colorspace != AVCOL_SPC_UNSPECIFIED)
786  x4->params.vui.i_colmatrix = avctx->colorspace;
788  x4->params.vui.i_colorprim = avctx->color_primaries;
789  if (avctx->color_trc != AVCOL_TRC_UNSPECIFIED)
790  x4->params.vui.i_transfer = avctx->color_trc;
791 
792  if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
793  x4->params.b_repeat_headers = 0;
794 
795  if(x4->x264opts){
796  const char *p= x4->x264opts;
797  while(p){
798  char param[256]={0}, val[256]={0};
799  if(sscanf(p, "%255[^:=]=%255[^:]", param, val) == 1){
800  OPT_STR(param, "1");
801  }else
802  OPT_STR(param, val);
803  p= strchr(p, ':');
804  p+=!!p;
805  }
806  }
807 
808  if (x4->x264_params) {
809  AVDictionary *dict = NULL;
810  AVDictionaryEntry *en = NULL;
811 
812  if (!av_dict_parse_string(&dict, x4->x264_params, "=", ":", 0)) {
813  while ((en = av_dict_get(dict, "", en, AV_DICT_IGNORE_SUFFIX))) {
814  if (x264_param_parse(&x4->params, en->key, en->value) < 0)
815  av_log(avctx, AV_LOG_WARNING,
816  "Error parsing option '%s = %s'.\n",
817  en->key, en->value);
818  }
819 
820  av_dict_free(&dict);
821  }
822  }
823 
824  // update AVCodecContext with x264 parameters
825  avctx->has_b_frames = x4->params.i_bframe ?
826  x4->params.i_bframe_pyramid ? 2 : 1 : 0;
827  if (avctx->max_b_frames < 0)
828  avctx->max_b_frames = 0;
829 
830  avctx->bit_rate = x4->params.rc.i_bitrate*1000;
831 
832  x4->enc = x264_encoder_open(&x4->params);
833  if (!x4->enc)
834  return AVERROR_EXTERNAL;
835 
836  if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
837  x264_nal_t *nal;
838  uint8_t *p;
839  int nnal, s, i;
840 
841  s = x264_encoder_headers(x4->enc, &nal, &nnal);
843  if (!p)
844  return AVERROR(ENOMEM);
845 
846  for (i = 0; i < nnal; i++) {
847  /* Don't put the SEI in extradata. */
848  if (nal[i].i_type == NAL_SEI) {
849  av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25);
850  x4->sei_size = nal[i].i_payload;
851  x4->sei = av_malloc(x4->sei_size);
852  if (!x4->sei)
853  return AVERROR(ENOMEM);
854  memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload);
855  continue;
856  }
857  memcpy(p, nal[i].p_payload, nal[i].i_payload);
858  p += nal[i].i_payload;
859  }
860  avctx->extradata_size = p - avctx->extradata;
861  }
862 
863  cpb_props = ff_add_cpb_side_data(avctx);
864  if (!cpb_props)
865  return AVERROR(ENOMEM);
866  cpb_props->buffer_size = x4->params.rc.i_vbv_buffer_size * 1000;
867  cpb_props->max_bitrate = x4->params.rc.i_vbv_max_bitrate * 1000;
868  cpb_props->avg_bitrate = x4->params.rc.i_bitrate * 1000;
869 
870  return 0;
871 }
872 
873 static const enum AVPixelFormat pix_fmts_8bit[] = {
882 #ifdef X264_CSP_NV21
884 #endif
886 };
887 static const enum AVPixelFormat pix_fmts_9bit[] = {
891 };
892 static const enum AVPixelFormat pix_fmts_10bit[] = {
898 };
899 static const enum AVPixelFormat pix_fmts_8bit_rgb[] = {
900 #ifdef X264_CSP_BGR
904 #endif
906 };
907 
908 static av_cold void X264_init_static(AVCodec *codec)
909 {
910  if (x264_bit_depth == 8)
911  codec->pix_fmts = pix_fmts_8bit;
912  else if (x264_bit_depth == 9)
913  codec->pix_fmts = pix_fmts_9bit;
914  else if (x264_bit_depth == 10)
915  codec->pix_fmts = pix_fmts_10bit;
916 }
917 
918 #define OFFSET(x) offsetof(X264Context, x)
919 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
920 static const AVOption options[] = {
921  { "preset", "Set the encoding preset (cf. x264 --fullhelp)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "medium" }, 0, 0, VE},
922  { "tune", "Tune the encoding params (cf. x264 --fullhelp)", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
923  { "profile", "Set profile restrictions (cf. x264 --fullhelp) ", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
924  { "fastfirstpass", "Use fast settings when encoding first pass", OFFSET(fastfirstpass), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE},
925  {"level", "Specify level (as defined by Annex A)", OFFSET(level), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
926  {"passlogfile", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
927  {"wpredp", "Weighted prediction for P-frames", OFFSET(wpredp), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
928  {"a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VE},
929  {"x264opts", "x264 options", OFFSET(x264opts), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, VE},
930  { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
931  { "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 },
932  { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
933  { "aq-mode", "AQ method", OFFSET(aq_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "aq_mode"},
934  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_NONE}, INT_MIN, INT_MAX, VE, "aq_mode" },
935  { "variance", "Variance AQ (complexity mask)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_VARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
936  { "autovariance", "Auto-variance AQ", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE}, INT_MIN, INT_MAX, VE, "aq_mode" },
937 #if X264_BUILD >= 144
938  { "autovariance-biased", "Auto-variance AQ with bias to dark scenes", 0, AV_OPT_TYPE_CONST, {.i64 = X264_AQ_AUTOVARIANCE_BIASED}, INT_MIN, INT_MAX, VE, "aq_mode" },
939 #endif
940  { "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},
941  { "psy", "Use psychovisual optimizations.", OFFSET(psy), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
942  { "psy-rd", "Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.", OFFSET(psy_rd), AV_OPT_TYPE_STRING, {0 }, 0, 0, VE},
943  { "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 },
944  { "weightb", "Weighted prediction for B-frames.", OFFSET(weightb), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
945  { "weightp", "Weighted prediction analysis method.", OFFSET(weightp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "weightp" },
946  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_NONE}, INT_MIN, INT_MAX, VE, "weightp" },
947  { "simple", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SIMPLE}, INT_MIN, INT_MAX, VE, "weightp" },
948  { "smart", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_WEIGHTP_SMART}, INT_MIN, INT_MAX, VE, "weightp" },
949  { "ssim", "Calculate and print SSIM stats.", OFFSET(ssim), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
950  { "intra-refresh", "Use Periodic Intra Refresh instead of IDR frames.",OFFSET(intra_refresh),AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
951  { "bluray-compat", "Bluray compatibility workarounds.", OFFSET(bluray_compat) ,AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
952  { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, { .i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
953  { "b-pyramid", "Keep some B-frames as references.", OFFSET(b_pyramid), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "b_pyramid" },
954  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NONE}, INT_MIN, INT_MAX, VE, "b_pyramid" },
955  { "strict", "Strictly hierarchical pyramid", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_STRICT}, INT_MIN, INT_MAX, VE, "b_pyramid" },
956  { "normal", "Non-strict (not Blu-ray compatible)", 0, AV_OPT_TYPE_CONST, {.i64 = X264_B_PYRAMID_NORMAL}, INT_MIN, INT_MAX, VE, "b_pyramid" },
957  { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, { .i64 = -1}, -1, 1, VE },
958  { "8x8dct", "High profile 8x8 transform.", OFFSET(dct8x8), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE},
959  { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE},
960  { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE},
961  { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE},
962  { "deblock", "Loop filter parameters, in <alpha:beta> form.", OFFSET(deblock), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
963  { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
964  { "partitions", "A comma-separated list of partitions to consider. "
965  "Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all", OFFSET(partitions), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE},
966  { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
967  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
968  { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
969  { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
970  { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
971  { "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 },
972  { "stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
973  { "nal-hrd", "Signal HRD information (requires vbv-bufsize; "
974  "cbr not allowed in .mp4)", OFFSET(nal_hrd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE, "nal-hrd" },
975  { "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_NONE}, INT_MIN, INT_MAX, VE, "nal-hrd" },
976  { "vbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_VBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
977  { "cbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = X264_NAL_HRD_CBR}, INT_MIN, INT_MAX, VE, "nal-hrd" },
978  { "avcintra-class","AVC-Intra class 50/100/200", OFFSET(avcintra_class),AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 200 , VE},
979  { "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, X264_ME_TESA, VE, "motion-est"},
980  { "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" },
981  { "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" },
982  { "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
983  { "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" },
984  { "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },
985  { "forced-idr", "If forcing keyframes, force them as IDR frames.", OFFSET(forced_idr), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
986  { "coder", "Coder type", OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE, "coder" },
987  { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, VE, "coder" },
988  { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
989  { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
990  { "vlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "coder" },
991  { "ac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
992  { "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, VE },
993  { "chromaoffset", "QP difference between chroma and luma", OFFSET(chroma_offset), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, VE },
994  { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, VE },
995  { "noise_reduction", "Noise reduction", OFFSET(noise_reduction), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, VE },
996 
997  { "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 },
998  { NULL },
999 };
1000 
1001 static const AVCodecDefault x264_defaults[] = {
1002  { "b", "0" },
1003  { "bf", "-1" },
1004  { "flags2", "0" },
1005  { "g", "-1" },
1006  { "i_qfactor", "-1" },
1007  { "b_qfactor", "-1" },
1008  { "qmin", "-1" },
1009  { "qmax", "-1" },
1010  { "qdiff", "-1" },
1011  { "qblur", "-1" },
1012  { "qcomp", "-1" },
1013 // { "rc_lookahead", "-1" },
1014  { "refs", "-1" },
1015 #if FF_API_PRIVATE_OPT
1016  { "sc_threshold", "-1" },
1017 #endif
1018  { "trellis", "-1" },
1019 #if FF_API_PRIVATE_OPT
1020  { "nr", "-1" },
1021 #endif
1022  { "me_range", "-1" },
1023 #if FF_API_MOTION_EST
1024  { "me_method", "-1" },
1025 #endif
1026  { "subq", "-1" },
1027 #if FF_API_PRIVATE_OPT
1028  { "b_strategy", "-1" },
1029 #endif
1030  { "keyint_min", "-1" },
1031 #if FF_API_CODER_TYPE
1032  { "coder", "-1" },
1033 #endif
1034  { "cmp", "-1" },
1035  { "threads", AV_STRINGIFY(X264_THREADS_AUTO) },
1036  { "thread_type", "0" },
1037  { "flags", "+cgop" },
1038  { "rc_init_occupancy","-1" },
1039  { NULL },
1040 };
1041 
1042 #if CONFIG_LIBX264_ENCODER
1043 static const AVClass x264_class = {
1044  .class_name = "libx264",
1045  .item_name = av_default_item_name,
1046  .option = options,
1047  .version = LIBAVUTIL_VERSION_INT,
1048 };
1049 
1050 static const AVClass rgbclass = {
1051  .class_name = "libx264rgb",
1052  .item_name = av_default_item_name,
1053  .option = options,
1054  .version = LIBAVUTIL_VERSION_INT,
1055 };
1056 
1057 AVCodec ff_libx264_encoder = {
1058  .name = "libx264",
1059  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1060  .type = AVMEDIA_TYPE_VIDEO,
1061  .id = AV_CODEC_ID_H264,
1062  .priv_data_size = sizeof(X264Context),
1063  .init = X264_init,
1064  .encode2 = X264_frame,
1065  .close = X264_close,
1067  .priv_class = &x264_class,
1068  .defaults = x264_defaults,
1069  .init_static_data = X264_init_static,
1070  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1072 };
1073 
1074 AVCodec ff_libx264rgb_encoder = {
1075  .name = "libx264rgb",
1076  .long_name = NULL_IF_CONFIG_SMALL("libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB"),
1077  .type = AVMEDIA_TYPE_VIDEO,
1078  .id = AV_CODEC_ID_H264,
1079  .priv_data_size = sizeof(X264Context),
1080  .init = X264_init,
1081  .encode2 = X264_frame,
1082  .close = X264_close,
1084  .priv_class = &rgbclass,
1085  .defaults = x264_defaults,
1087 };
1088 #endif
1089 
1090 #if CONFIG_LIBX262_ENCODER
1091 static const AVClass X262_class = {
1092  .class_name = "libx262",
1093  .item_name = av_default_item_name,
1094  .option = options,
1095  .version = LIBAVUTIL_VERSION_INT,
1096 };
1097 
1098 AVCodec ff_libx262_encoder = {
1099  .name = "libx262",
1100  .long_name = NULL_IF_CONFIG_SMALL("libx262 MPEG2VIDEO"),
1101  .type = AVMEDIA_TYPE_VIDEO,
1102  .id = AV_CODEC_ID_MPEG2VIDEO,
1103  .priv_data_size = sizeof(X264Context),
1104  .init = X264_init,
1105  .encode2 = X264_frame,
1106  .close = X264_close,
1108  .priv_class = &X262_class,
1109  .defaults = x264_defaults,
1111  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
1113 };
1114 #endif
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define FF_PROFILE_H264_MAIN
Definition: avcodec.h:3180
static int convert_pix_fmt(enum AVPixelFormat pix_fmt)
Definition: libx264.c:431
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:634
const char * s
Definition: avisynth_c.h:631
static enum AVPixelFormat pix_fmt
static int avfmt2_num_planes(int avfmt)
Definition: libx264.c:151
char * partitions
Definition: libx264.c:79
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
int dct8x8
Definition: libx264.c:73
AVOption.
Definition: opt.h:245
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:626
#define AV_CODEC_FLAG_INTERLACED_DCT
Use interlaced DCT.
Definition: avcodec.h:868
AVFormatContext * ctx
Definition: movenc-test.c:48
#define AV_CODEC_FLAG_LOOP_FILTER
loop filter.
Definition: avcodec.h:851
const char * fmt
Definition: avisynth_c.h:632
float qblur
amount of qscale smoothing over time (0.0-1.0)
Definition: avcodec.h:2577
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1707
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
memory handling functions
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int max_bitrate
Maximum bitrate of the stream, in bits per second.
Definition: avcodec.h:1300
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:1928
int noise_reduction
Definition: libx264.c:92
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2680
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2378
int num
numerator
Definition: rational.h:44
static enum AVPixelFormat pix_fmts_8bit_rgb[]
Definition: libx264.c:899
enhanced predictive zonal search
Definition: avcodec.h:760
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:2053
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1870
int bluray_compat
Definition: libx264.c:69
char * wpredp
Definition: libx264.c:55
static void X264_log(void *p, int level, const char *fmt, va_list args)
Definition: libx264.c:97
static AVPacket pkt
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1028
int profile
profile
Definition: avcodec.h:3146
Views are next to each other.
Definition: stereo3d.h:45
AVCodec.
Definition: avcodec.h:3535
static av_cold int X264_init(AVCodecContext *avctx)
Definition: libx264.c:470
attribute_deprecated int me_method
This option does nothing.
Definition: avcodec.h:1877
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1779
Undefined.
Definition: avutil.h:265
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:646
x264_param_t params
Definition: libx264.c:45
char * x264opts
Definition: libx264.c:56
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:978
#define FF_PROFILE_H264_BASELINE
Definition: avcodec.h:3178
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AVOptions.
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:123
int me_range
maximum motion estimation search range in subpel units If 0 then no limit.
Definition: avcodec.h:2164
float b_quant_factor
qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q...
Definition: avcodec.h:1937
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:264
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1757
int me_cmp
motion estimation comparison function
Definition: avcodec.h:2060
static AVFrame * frame
Structure to hold side data for an AVFrame.
Definition: frame.h:143
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:39
uint8_t * data
Definition: avcodec.h:1577
int b_pyramid
Definition: libx264.c:71
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
x264_picture_t pic
Definition: libx264.c:47
float cplxblur
Definition: libx264.c:78
int buffer_size
The size of the buffer to which the ratecontrol is applied, in bits.
Definition: avcodec.h:1316
ptrdiff_t size
Definition: opengl_enc.c:101
#define FF_CMP_CHROMA
Definition: avcodec.h:2094
char * stats
Definition: libx264.c:82
int intra_refresh
Definition: libx264.c:68
#define AV_PIX_FMT_NV20
Definition: pixfmt.h:378
Views are alternated temporally.
Definition: stereo3d.h:66
#define av_log(a,...)
int rc_lookahead
Definition: libx264.c:64
hexagon based search
Definition: avcodec.h:762
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1609
static enum AVPixelFormat pix_fmts_10bit[]
Definition: libx264.c:892
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1964
int flags
Additional information about the frame packing.
Definition: stereo3d.h:132
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
int qmax
maximum quantizer
Definition: avcodec.h:2591
char * profile
Definition: libx264.c:52
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
int coder
Definition: libx264.c:87
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int fastfirstpass
Definition: libx264.c:54
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:57
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:202
#define FF_PROFILE_H264_HIGH_422
Definition: avcodec.h:3185
#define FF_PROFILE_H264_HIGH
Definition: avcodec.h:3182
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1737
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:90
int mbtree
Definition: libx264.c:76
const char * name
Name of the codec implementation.
Definition: avcodec.h:3542
float i_quant_factor
qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*...
Definition: avcodec.h:1979
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:341
char * deblock
Definition: libx264.c:77
transformed exhaustive search algorithm
Definition: avcodec.h:764
int b_frame_strategy
Definition: libx264.c:89
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1583
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
int rc_buffer_size
decoder bitstream buffer size
Definition: avcodec.h:2618
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
common internal API header
char * psy_rd
Definition: libx264.c:62
as above, but U and V bytes are swapped
Definition: pixfmt.h:91
int refs
number of reference frames
Definition: avcodec.h:2322
int motion_est
Definition: libx264.c:85
static enum AVPixelFormat pix_fmts_9bit[]
Definition: libx264.c:887
Views are packed per line, as if interlaced.
Definition: stereo3d.h:97
#define PARSE_X264_OPT(name, var)
Definition: libx264.c:464
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3556
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:254
#define OPT_STR(opt, param)
Definition: libx264.c:417
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
int width
picture width / height.
Definition: avcodec.h:1829
int cqp
Definition: libx264.c:59
attribute_deprecated int noise_reduction
Definition: avcodec.h:2230
x264_t * enc
Definition: libx264.c:46
#define AV_CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
Definition: avcodec.h:859
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:843
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2357
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:3084
int level
level
Definition: avcodec.h:3235
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:290
int scenechange_threshold
Definition: libx264.c:91
int slice_max_size
Definition: libx264.c:81
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:1788
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:65
int nal_hrd
Definition: libx264.c:83
int max_qdiff
maximum quantizer difference between frames
Definition: avcodec.h:2598
int weightp
Definition: libx264.c:65
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:337
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:114
attribute_deprecated int coder_type
Definition: avcodec.h:2694
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:194
char * x264_params
Definition: libx264.c:94
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:3072
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:452
Views are packed per column.
Definition: stereo3d.h:107
static enum AVPixelFormat pix_fmts_8bit[]
Definition: libx264.c:873
static const AVCodecDefault x264_defaults[]
Definition: libx264.c:1001
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
Definition: eval.c:98
int av_dict_parse_string(AVDictionary **pm, const char *str, const char *key_val_sep, const char *pairs_sep, int flags)
Parse the key/value pairs list and add the parsed entries to a dictionary.
Definition: dict.c:179
Definition: h264.h:120
This structure describes the bitrate properties of an encoded bitstream.
Definition: avcodec.h:1295
int avcintra_class
Definition: libx264.c:84
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:127
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
char * level
Definition: libx264.c:53
Libavcodec external API header.
static av_cold int X264_close(AVCodecContext *avctx)
Definition: libx264.c:402
attribute_deprecated int scenechange_threshold
Definition: avcodec.h:2226
enum AVCodecID codec_id
Definition: avcodec.h:1659
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
int forced_idr
Definition: libx264.c:86
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:211
attribute_deprecated int b_frame_strategy
Definition: avcodec.h:1948
main external API structure.
Definition: avcodec.h:1642
static const AVOption options[]
Definition: libx264.c:920
int qmin
minimum quantizer
Definition: avcodec.h:2584
uint8_t * data
Definition: frame.h:145
#define FF_CODER_TYPE_AC
Definition: avcodec.h:2684
int extradata_size
Definition: avcodec.h:1758
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:338
float crf
Definition: libx264.c:57
int aq_mode
Definition: libx264.c:60
int aud
Definition: libx264.c:75
#define AV_STRINGIFY(s)
Definition: macros.h:36
Describe the class of an AVClass context structure.
Definition: log.h:67
int a53_cc
Definition: libx264.c:88
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2371
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2364
uint8_t * sei
Definition: libx264.c:48
void av_vlog(void *avcl, int level, const char *fmt, va_list vl)
Send the specified message to the log if the level is less than or equal to the current av_log_level...
Definition: log.c:379
int psy
Definition: libx264.c:63
static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, const x264_nal_t *nals, int nnal)
Definition: libx264.c:113
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:253
#define FF_PROFILE_H264_HIGH_444
Definition: avcodec.h:3187
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:335
attribute_deprecated int chromaoffset
Definition: avcodec.h:2327
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1683
float qcompress
amount of qscale change between easy & hard scenes (0.0-1.0)
Definition: avcodec.h:2576
int sei_size
Definition: libx264.c:49
static void reconfig_encoder(AVCodecContext *ctx, const AVFrame *frame)
Definition: libx264.c:171
char * preset
Definition: libx264.c:50
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
mfxU16 profile
Definition: qsvenc.c:42
int global_quality
Global quality for codecs which cannot change it per frame.
Definition: avcodec.h:1723
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:339
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:194
uint8_t level
Definition: svq3.c:193
int b_bias
Definition: libx264.c:70
#define AV_CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:876
int fast_pskip
Definition: libx264.c:74
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1855
int chroma_offset
Definition: libx264.c:90
static av_cold void X264_init_static(AVCodec *codec)
Definition: libx264.c:908
int mixed_refs
Definition: libx264.c:72
preset
Definition: vf_curves.c:46
char * tune
Definition: libx264.c:51
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
#define VE
Definition: libx264.c:919
int weightb
Definition: libx264.c:66
float aq_strength
Definition: libx264.c:61
common internal api header.
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:35
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:76
Bi-dir predicted.
Definition: avutil.h:268
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3063
char * key
Definition: dict.h:86
int den
denominator
Definition: rational.h:45
interleaved chroma YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:212
int trellis
trellis RD quantization
Definition: avcodec.h:2740
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
Definition: utils.c:3985
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:728
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:847
int slices
Number of slices.
Definition: avcodec.h:2394
void * priv_data
Definition: avcodec.h:1684
#define av_free(p)
char * value
Definition: dict.h:87
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:319
uneven multi-hexagon search
Definition: avcodec.h:763
int avg_bitrate
Average bitrate of the stream, in bits per second.
Definition: avcodec.h:1310
Views are on top of each other.
Definition: stereo3d.h:55
int ssim
Definition: libx264.c:67
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:219
static void stats(const struct CachedBuf *in, int n_in, unsigned *_max, unsigned *_sum)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1576
float crf_max
Definition: libx264.c:58
#define OFFSET(x)
Definition: libx264.c:918
int direct_pred
Definition: libx264.c:80
#define av_freep(p)
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: libx264.c:271
#define AV_CODEC_FLAG_CLOSED_GOP
Definition: avcodec.h:890
static const AVCodecDefault defaults[]
Definition: dcaenc.c:975
#define MKTAG(a, b, c, d)
Definition: common.h:342
#define FF_PROFILE_H264_HIGH_10
Definition: avcodec.h:3183
Stereoscopic 3d metadata.
Definition: frame.h:62
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1554
int me_subpel_quality
subpel ME quality
Definition: avcodec.h:2135
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1570
Predicted.
Definition: avutil.h:267
int thread_type
Which multithreading methods to use.
Definition: avcodec.h:3082
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
int64_t rc_max_rate
maximum bitrate
Definition: avcodec.h:2641
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int keyint_min
minimum GOP size
Definition: avcodec.h:2315