FFmpeg  4.3.7
libxvid.c
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1 /*
2  * Interface to xvidcore for MPEG-4 encoding
3  * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
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 /**
23  * @file
24  * Interface to xvidcore for MPEG-4 compliant encoding.
25  * @author Adam Thayer (krevnik@comcast.net)
26  */
27 
28 #include <stdio.h>
29 #include <string.h>
30 #include <xvid.h>
31 
32 #include "libavutil/avassert.h"
33 #include "libavutil/cpu.h"
34 #include "libavutil/file.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/intreadwrite.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/mem.h"
39 #include "libavutil/opt.h"
40 
41 #include "avcodec.h"
42 #include "internal.h"
43 #include "libxvid.h"
44 #include "mpegutils.h"
45 #include "packet_internal.h"
46 
47 #if HAVE_UNISTD_H
48 #include <unistd.h>
49 #endif
50 
51 #if HAVE_IO_H
52 #include <io.h>
53 #endif
54 
55 /**
56  * Buffer management macros.
57  */
58 #define BUFFER_SIZE 1024
59 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
60 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
61 
62 /**
63  * Structure for the private Xvid context.
64  * This stores all the private context for the codec.
65  */
66 struct xvid_context {
67  AVClass *class;
68  void *encoder_handle; /**< Handle for Xvid encoder */
69  int xsize; /**< Frame x size */
70  int ysize; /**< Frame y size */
71  int vop_flags; /**< VOP flags for Xvid encoder */
72  int vol_flags; /**< VOL flags for Xvid encoder */
73  int me_flags; /**< Motion Estimation flags */
74  int qscale; /**< Do we use constant scale? */
75  int quicktime_format; /**< Are we in a QT-based format? */
76  char *twopassbuffer; /**< Character buffer for two-pass */
77  char *old_twopassbuffer; /**< Old character buffer (two-pass) */
78  char *twopassfile; /**< second pass temp file name */
79  int twopassfd;
80  unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
81  unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
82  int lumi_aq; /**< Lumi masking as an aq method */
83  int variance_aq; /**< Variance adaptive quantization */
84  int ssim; /**< SSIM information display mode */
85  int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
86  int gmc;
87  int me_quality; /**< Motion estimation quality. 0: fast 6: best. */
88  int mpeg_quant; /**< Quantization type. 0: H.263, 1: MPEG */
89 };
90 
91 /**
92  * Structure for the private first-pass plugin.
93  */
94 struct xvid_ff_pass1 {
95  int version; /**< Xvid version */
96  struct xvid_context *context; /**< Pointer to private context */
97 };
98 
99 static int xvid_encode_close(AVCodecContext *avctx);
100 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
101  const AVFrame *picture, int *got_packet);
102 
103 
104 /*
105  * Xvid 2-Pass Kludge Section
106  *
107  * Xvid's default 2-pass doesn't allow us to create data as we need to, so
108  * this section spends time replacing the first pass plugin so we can write
109  * statistic information as libavcodec requests in. We have another kludge
110  * that allows us to pass data to the second pass in Xvid without a custom
111  * rate-control plugin.
112  */
113 
114 /**
115  * Initialize the two-pass plugin and context.
116  *
117  * @param param Input construction parameter structure
118  * @param handle Private context handle
119  * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
120  */
121 static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
122 {
123  struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param;
124  char *log = x->context->twopassbuffer;
125 
126  /* Do a quick bounds check */
127  if (!log)
128  return XVID_ERR_FAIL;
129 
130  /* We use snprintf() */
131  /* This is because we can safely prevent a buffer overflow */
132  log[0] = 0;
133  snprintf(log, BUFFER_REMAINING(log),
134  "# ffmpeg 2-pass log file, using xvid codec\n");
136  "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
137  XVID_VERSION_MAJOR(XVID_VERSION),
138  XVID_VERSION_MINOR(XVID_VERSION),
139  XVID_VERSION_PATCH(XVID_VERSION));
140 
141  *handle = x->context;
142  return 0;
143 }
144 
145 /**
146  * Destroy the two-pass plugin context.
147  *
148  * @param ref Context pointer for the plugin
149  * @param param Destroy context
150  * @return Returns 0, success guaranteed
151  */
153  xvid_plg_destroy_t *param)
154 {
155  /* Currently cannot think of anything to do on destruction */
156  /* Still, the framework should be here for reference/use */
157  if (ref->twopassbuffer)
158  ref->twopassbuffer[0] = 0;
159  return 0;
160 }
161 
162 /**
163  * Enable fast encode mode during the first pass.
164  *
165  * @param ref Context pointer for the plugin
166  * @param param Frame data
167  * @return Returns 0, success guaranteed
168  */
170  xvid_plg_data_t *param)
171 {
172  int motion_remove;
173  int motion_replacements;
174  int vop_remove;
175 
176  /* Nothing to do here, result is changed too much */
177  if (param->zone && param->zone->mode == XVID_ZONE_QUANT)
178  return 0;
179 
180  /* We can implement a 'turbo' first pass mode here */
181  param->quant = 2;
182 
183  /* Init values */
184  motion_remove = ~XVID_ME_CHROMA_PVOP &
185  ~XVID_ME_CHROMA_BVOP &
186  ~XVID_ME_EXTSEARCH16 &
187  ~XVID_ME_ADVANCEDDIAMOND16;
188  motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
189  XVID_ME_SKIP_DELTASEARCH |
190  XVID_ME_FASTREFINE16 |
191  XVID_ME_BFRAME_EARLYSTOP;
192  vop_remove = ~XVID_VOP_MODEDECISION_RD &
193  ~XVID_VOP_FAST_MODEDECISION_RD &
194  ~XVID_VOP_TRELLISQUANT &
195  ~XVID_VOP_INTER4V &
196  ~XVID_VOP_HQACPRED;
197 
198  param->vol_flags &= ~XVID_VOL_GMC;
199  param->vop_flags &= vop_remove;
200  param->motion_flags &= motion_remove;
201  param->motion_flags |= motion_replacements;
202 
203  return 0;
204 }
205 
206 /**
207  * Capture statistic data and write it during first pass.
208  *
209  * @param ref Context pointer for the plugin
210  * @param param Statistic data
211  * @return Returns XVID_ERR_xxxx on failure, or 0 on success
212  */
214  xvid_plg_data_t *param)
215 {
216  char *log = ref->twopassbuffer;
217  const char *frame_types = " ipbs";
218  char frame_type;
219 
220  /* Quick bounds check */
221  if (!log)
222  return XVID_ERR_FAIL;
223 
224  /* Convert the type given to us into a character */
225  if (param->type < 5 && param->type > 0)
226  frame_type = frame_types[param->type];
227  else
228  return XVID_ERR_FAIL;
229 
231  "%c %d %d %d %d %d %d\n",
232  frame_type, param->stats.quant, param->stats.kblks,
233  param->stats.mblks, param->stats.ublks,
234  param->stats.length, param->stats.hlength);
235 
236  return 0;
237 }
238 
239 /**
240  * Dispatch function for our custom plugin.
241  * This handles the dispatch for the Xvid plugin. It passes data
242  * on to other functions for actual processing.
243  *
244  * @param ref Context pointer for the plugin
245  * @param cmd The task given for us to complete
246  * @param p1 First parameter (varies)
247  * @param p2 Second parameter (varies)
248  * @return Returns XVID_ERR_xxxx on failure, or 0 on success
249  */
250 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
251 {
252  switch (cmd) {
253  case XVID_PLG_INFO:
254  case XVID_PLG_FRAME:
255  return 0;
256  case XVID_PLG_BEFORE:
257  return xvid_ff_2pass_before(ref, p1);
258  case XVID_PLG_CREATE:
259  return xvid_ff_2pass_create(p1, p2);
260  case XVID_PLG_AFTER:
261  return xvid_ff_2pass_after(ref, p1);
262  case XVID_PLG_DESTROY:
263  return xvid_ff_2pass_destroy(ref, p1);
264  default:
265  return XVID_ERR_FAIL;
266  }
267 }
268 
269 /**
270  * Routine to create a global VO/VOL header for MP4 container.
271  * What we do here is extract the header from the Xvid bitstream
272  * as it is encoded. We also strip the repeated headers from the
273  * bitstream when a global header is requested for MPEG-4 ISO
274  * compliance.
275  *
276  * @param avctx AVCodecContext pointer to context
277  * @param frame Pointer to encoded frame data
278  * @param header_len Length of header to search
279  * @param frame_len Length of encoded frame data
280  * @return Returns new length of frame data
281  */
283  unsigned int header_len,
284  unsigned int frame_len)
285 {
286  int vo_len = 0, i;
287 
288  for (i = 0; i < header_len - 3; i++) {
289  if (pkt->data[i] == 0x00 &&
290  pkt->data[i + 1] == 0x00 &&
291  pkt->data[i + 2] == 0x01 &&
292  pkt->data[i + 3] == 0xB6) {
293  vo_len = i;
294  break;
295  }
296  }
297 
298  if (vo_len > 0) {
299  /* We need to store the header, so extract it */
300  if (!avctx->extradata) {
301  avctx->extradata = av_malloc(vo_len);
302  if (!avctx->extradata)
303  return AVERROR(ENOMEM);
304  memcpy(avctx->extradata, pkt->data, vo_len);
305  avctx->extradata_size = vo_len;
306  }
307  /* Less dangerous now, memmove properly copies the two
308  * chunks of overlapping data */
309  memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
310  pkt->size = frame_len - vo_len;
311  }
312  return 0;
313 }
314 
315 /**
316  * Routine to correct a possibly erroneous framerate being fed to us.
317  * Xvid currently chokes on framerates where the ticks per frame is
318  * extremely large. This function works to correct problems in this area
319  * by estimating a new framerate and taking the simpler fraction of
320  * the two presented.
321  *
322  * @param avctx Context that contains the framerate to correct.
323  */
325 {
326  int frate, fbase;
327  int est_frate, est_fbase;
328  int gcd;
329  float est_fps, fps;
330 
331  frate = avctx->time_base.den;
332  fbase = avctx->time_base.num;
333 
334  gcd = av_gcd(frate, fbase);
335  if (gcd > 1) {
336  frate /= gcd;
337  fbase /= gcd;
338  }
339 
340  if (frate <= 65000 && fbase <= 65000) {
341  avctx->time_base.den = frate;
342  avctx->time_base.num = fbase;
343  return;
344  }
345 
346  fps = (float) frate / (float) fbase;
347  est_fps = roundf(fps * 1000.0) / 1000.0;
348 
349  est_frate = (int) est_fps;
350  if (est_fps > (int) est_fps) {
351  est_frate = (est_frate + 1) * 1000;
352  est_fbase = (int) roundf((float) est_frate / est_fps);
353  } else
354  est_fbase = 1;
355 
356  gcd = av_gcd(est_frate, est_fbase);
357  if (gcd > 1) {
358  est_frate /= gcd;
359  est_fbase /= gcd;
360  }
361 
362  if (fbase > est_fbase) {
363  avctx->time_base.den = est_frate;
364  avctx->time_base.num = est_fbase;
365  av_log(avctx, AV_LOG_DEBUG,
366  "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
367  est_fps, (((est_fps - fps) / fps) * 100.0));
368  } else {
369  avctx->time_base.den = frate;
370  avctx->time_base.num = fbase;
371  }
372 }
373 
375 {
376  int xerr, i, ret = -1;
377  int xvid_flags = avctx->flags;
378  struct xvid_context *x = avctx->priv_data;
379  uint16_t *intra, *inter;
380  int fd;
381 
382  xvid_plugin_single_t single = { 0 };
383  struct xvid_ff_pass1 rc2pass1 = { 0 };
384  xvid_plugin_2pass2_t rc2pass2 = { 0 };
385  xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
386  xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
387  xvid_plugin_ssim_t ssim = { 0 };
388  xvid_gbl_init_t xvid_gbl_init = { 0 };
389  xvid_enc_create_t xvid_enc_create = { 0 };
390  xvid_enc_plugin_t plugins[4];
391 
392  x->twopassfd = -1;
393 
394  /* Bring in VOP flags from ffmpeg command-line */
395  x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
396  if (xvid_flags & AV_CODEC_FLAG_4MV)
397  x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
398  if (avctx->trellis)
399  x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
400  if (xvid_flags & AV_CODEC_FLAG_AC_PRED)
401  x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
402  if (xvid_flags & AV_CODEC_FLAG_GRAY)
403  x->vop_flags |= XVID_VOP_GREYSCALE;
404 
405  /* Decide which ME quality setting to use */
406  x->me_flags = 0;
407  switch (x->me_quality) {
408  case 6:
409  case 5:
410  x->me_flags |= XVID_ME_EXTSEARCH16 |
411  XVID_ME_EXTSEARCH8;
412  case 4:
413  case 3:
414  x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
415  XVID_ME_HALFPELREFINE8 |
416  XVID_ME_CHROMA_PVOP |
417  XVID_ME_CHROMA_BVOP;
418  case 2:
419  case 1:
420  x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
421  XVID_ME_HALFPELREFINE16;
422  }
423 
424  /* Decide how we should decide blocks */
425  switch (avctx->mb_decision) {
426  case 2:
427  x->vop_flags |= XVID_VOP_MODEDECISION_RD;
428  x->me_flags |= XVID_ME_HALFPELREFINE8_RD |
429  XVID_ME_QUARTERPELREFINE8_RD |
430  XVID_ME_EXTSEARCH_RD |
431  XVID_ME_CHECKPREDICTION_RD;
432  case 1:
433  if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD))
434  x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
435  x->me_flags |= XVID_ME_HALFPELREFINE16_RD |
436  XVID_ME_QUARTERPELREFINE16_RD;
437  default:
438  break;
439  }
440 
441  /* Bring in VOL flags from ffmpeg command-line */
442  x->vol_flags = 0;
443  if (x->gmc) {
444  x->vol_flags |= XVID_VOL_GMC;
445  x->me_flags |= XVID_ME_GME_REFINE;
446  }
447  if (xvid_flags & AV_CODEC_FLAG_QPEL) {
448  x->vol_flags |= XVID_VOL_QUARTERPEL;
449  x->me_flags |= XVID_ME_QUARTERPELREFINE16;
450  if (x->vop_flags & XVID_VOP_INTER4V)
451  x->me_flags |= XVID_ME_QUARTERPELREFINE8;
452  }
453 
454  xvid_gbl_init.version = XVID_VERSION;
455  xvid_gbl_init.debug = 0;
456  xvid_gbl_init.cpu_flags = 0;
457 
458  /* Initialize */
459  xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
460 
461  /* Create the encoder reference */
462  xvid_enc_create.version = XVID_VERSION;
463 
464  /* Store the desired frame size */
465  xvid_enc_create.width =
466  x->xsize = avctx->width;
467  xvid_enc_create.height =
468  x->ysize = avctx->height;
469 
470  /* Xvid can determine the proper profile to use */
471  /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
472 
473  /* We don't use zones */
474  xvid_enc_create.zones = NULL;
475  xvid_enc_create.num_zones = 0;
476 
477  xvid_enc_create.num_threads = avctx->thread_count;
478 #if (XVID_VERSION <= 0x010303) && (XVID_VERSION >= 0x010300)
479  /* workaround for a bug in libxvidcore */
480  if (avctx->height <= 16) {
481  if (avctx->thread_count < 2) {
482  xvid_enc_create.num_threads = 0;
483  } else {
484  av_log(avctx, AV_LOG_ERROR,
485  "Too small height for threads > 1.");
486  return AVERROR(EINVAL);
487  }
488  }
489 #endif
490 
491  xvid_enc_create.plugins = plugins;
492  xvid_enc_create.num_plugins = 0;
493 
494  /* Initialize Buffers */
495  x->twopassbuffer = NULL;
496  x->old_twopassbuffer = NULL;
497  x->twopassfile = NULL;
498 
499  if (xvid_flags & AV_CODEC_FLAG_PASS1) {
500  rc2pass1.version = XVID_VERSION;
501  rc2pass1.context = x;
504  if (!x->twopassbuffer || !x->old_twopassbuffer) {
505  av_log(avctx, AV_LOG_ERROR,
506  "Xvid: Cannot allocate 2-pass log buffers\n");
507  return AVERROR(ENOMEM);
508  }
509  x->twopassbuffer[0] =
510  x->old_twopassbuffer[0] = 0;
511 
512  plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
513  plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
514  xvid_enc_create.num_plugins++;
515  } else if (xvid_flags & AV_CODEC_FLAG_PASS2) {
516  rc2pass2.version = XVID_VERSION;
517  rc2pass2.bitrate = avctx->bit_rate;
518 
519  fd = avpriv_tempfile("xvidff.", &x->twopassfile, 0, avctx);
520  if (fd < 0) {
521  av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n");
522  return fd;
523  }
524  x->twopassfd = fd;
525 
526  if (!avctx->stats_in) {
527  av_log(avctx, AV_LOG_ERROR,
528  "Xvid: No 2-pass information loaded for second pass\n");
529  return AVERROR(EINVAL);
530  }
531 
532  ret = write(fd, avctx->stats_in, strlen(avctx->stats_in));
533  if (ret == -1)
534  ret = AVERROR(errno);
535  else if (strlen(avctx->stats_in) > ret) {
536  av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n");
537  ret = AVERROR(EIO);
538  }
539  if (ret < 0)
540  return ret;
541 
542  rc2pass2.filename = x->twopassfile;
543  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
544  plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
545  xvid_enc_create.num_plugins++;
546  } else if (!(xvid_flags & AV_CODEC_FLAG_QSCALE)) {
547  /* Single Pass Bitrate Control! */
548  single.version = XVID_VERSION;
549  single.bitrate = avctx->bit_rate;
550 
551  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
552  plugins[xvid_enc_create.num_plugins].param = &single;
553  xvid_enc_create.num_plugins++;
554  }
555 
556  if (avctx->lumi_masking != 0.0)
557  x->lumi_aq = 1;
558 
559  /* Luminance Masking */
560  if (x->lumi_aq) {
561  masking_l.method = 0;
562  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
563 
564  /* The old behavior is that when avctx->lumi_masking is specified,
565  * plugins[...].param = NULL. Trying to keep the old behavior here. */
566  plugins[xvid_enc_create.num_plugins].param =
567  avctx->lumi_masking ? NULL : &masking_l;
568  xvid_enc_create.num_plugins++;
569  }
570 
571  /* Variance AQ */
572  if (x->variance_aq) {
573  masking_v.method = 1;
574  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
575  plugins[xvid_enc_create.num_plugins].param = &masking_v;
576  xvid_enc_create.num_plugins++;
577  }
578 
579  if (x->lumi_aq && x->variance_aq )
580  av_log(avctx, AV_LOG_INFO,
581  "Both lumi_aq and variance_aq are enabled. The resulting quality"
582  "will be the worse one of the two effects made by the AQ.\n");
583 
584  /* SSIM */
585  if (x->ssim) {
586  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
587  ssim.b_printstat = x->ssim == 2;
588  ssim.acc = x->ssim_acc;
589  ssim.cpu_flags = xvid_gbl_init.cpu_flags;
590  ssim.b_visualize = 0;
591  plugins[xvid_enc_create.num_plugins].param = &ssim;
592  xvid_enc_create.num_plugins++;
593  }
594 
595  /* Frame Rate and Key Frames */
596  xvid_correct_framerate(avctx);
597  xvid_enc_create.fincr = avctx->time_base.num;
598  xvid_enc_create.fbase = avctx->time_base.den;
599  if (avctx->gop_size > 0)
600  xvid_enc_create.max_key_interval = avctx->gop_size;
601  else
602  xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
603 
604  /* Quants */
605  if (xvid_flags & AV_CODEC_FLAG_QSCALE)
606  x->qscale = 1;
607  else
608  x->qscale = 0;
609 
610  xvid_enc_create.min_quant[0] = avctx->qmin;
611  xvid_enc_create.min_quant[1] = avctx->qmin;
612  xvid_enc_create.min_quant[2] = avctx->qmin;
613  xvid_enc_create.max_quant[0] = avctx->qmax;
614  xvid_enc_create.max_quant[1] = avctx->qmax;
615  xvid_enc_create.max_quant[2] = avctx->qmax;
616 
617  /* Quant Matrices */
618  x->intra_matrix =
619  x->inter_matrix = NULL;
620 
621 #if FF_API_PRIVATE_OPT
623  if (avctx->mpeg_quant)
624  x->mpeg_quant = avctx->mpeg_quant;
626 #endif
627 
628  if (x->mpeg_quant)
629  x->vol_flags |= XVID_VOL_MPEGQUANT;
630  if ((avctx->intra_matrix || avctx->inter_matrix)) {
631  x->vol_flags |= XVID_VOL_MPEGQUANT;
632 
633  if (avctx->intra_matrix) {
634  intra = avctx->intra_matrix;
635  x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
636  if (!x->intra_matrix)
637  return AVERROR(ENOMEM);
638  } else
639  intra = NULL;
640  if (avctx->inter_matrix) {
641  inter = avctx->inter_matrix;
642  x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
643  if (!x->inter_matrix)
644  return AVERROR(ENOMEM);
645  } else
646  inter = NULL;
647 
648  for (i = 0; i < 64; i++) {
649  if (intra)
650  x->intra_matrix[i] = (unsigned char) intra[i];
651  if (inter)
652  x->inter_matrix[i] = (unsigned char) inter[i];
653  }
654  }
655 
656  /* Misc Settings */
657  xvid_enc_create.frame_drop_ratio = 0;
658  xvid_enc_create.global = 0;
659  if (xvid_flags & AV_CODEC_FLAG_CLOSED_GOP)
660  xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
661 
662  /* Determines which codec mode we are operating in */
663  avctx->extradata = NULL;
664  avctx->extradata_size = 0;
665  if (xvid_flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
666  /* In this case, we are claiming to be MPEG-4 */
667  x->quicktime_format = 1;
668  avctx->codec_id = AV_CODEC_ID_MPEG4;
669  } else {
670  /* We are claiming to be Xvid */
671  x->quicktime_format = 0;
672  if (!avctx->codec_tag)
673  avctx->codec_tag = AV_RL32("xvid");
674  }
675 
676  /* Bframes */
677  xvid_enc_create.max_bframes = avctx->max_b_frames;
678  xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
679  xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
680  if (avctx->max_b_frames > 0 && !x->quicktime_format)
681  xvid_enc_create.global |= XVID_GLOBAL_PACKED;
682 
683  av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
684 
685  /* Encode a dummy frame to get the extradata immediately */
686  if (x->quicktime_format) {
687  AVFrame *picture;
688  AVPacket packet = {0};
689  int size, got_packet, ret;
690 
691  av_init_packet(&packet);
692 
693  picture = av_frame_alloc();
694  if (!picture)
695  return AVERROR(ENOMEM);
696 
697  xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
698  if( xerr ) {
699  av_frame_free(&picture);
700  av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
701  return AVERROR_EXTERNAL;
702  }
703  x->encoder_handle = xvid_enc_create.handle;
704  size = ((avctx->width + 1) & ~1) * ((avctx->height + 1) & ~1);
705  picture->data[0] = av_malloc(size + size / 2);
706  if (!picture->data[0]) {
707  av_frame_free(&picture);
708  return AVERROR(ENOMEM);
709  }
710  picture->data[1] = picture->data[0] + size;
711  picture->data[2] = picture->data[1] + size / 4;
712  memset(picture->data[0], 0, size);
713  memset(picture->data[1], 128, size / 2);
714  ret = xvid_encode_frame(avctx, &packet, picture, &got_packet);
715  if (!ret && got_packet)
716  av_packet_unref(&packet);
717  av_free(picture->data[0]);
718  av_frame_free(&picture);
719  xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
720  }
721 
722  /* Create encoder context */
723  xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
724  if (xerr) {
725  av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
726  return AVERROR_EXTERNAL;
727  }
728 
729  x->encoder_handle = xvid_enc_create.handle;
730 
731  return 0;
732 }
733 
735  const AVFrame *picture, int *got_packet)
736 {
737  int xerr, i, ret, user_packet = !!pkt->data;
738  struct xvid_context *x = avctx->priv_data;
739  int mb_width = (avctx->width + 15) / 16;
740  int mb_height = (avctx->height + 15) / 16;
741  char *tmp;
742 
743  xvid_enc_frame_t xvid_enc_frame = { 0 };
744  xvid_enc_stats_t xvid_enc_stats = { 0 };
745 
746  if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
747  return ret;
748 
749  /* Start setting up the frame */
750  xvid_enc_frame.version = XVID_VERSION;
751  xvid_enc_stats.version = XVID_VERSION;
752 
753  /* Let Xvid know where to put the frame. */
754  xvid_enc_frame.bitstream = pkt->data;
755  xvid_enc_frame.length = pkt->size;
756 
757  /* Initialize input image fields */
758  if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
759  av_log(avctx, AV_LOG_ERROR,
760  "Xvid: Color spaces other than 420P not supported\n");
761  return AVERROR(EINVAL);
762  }
763 
764  xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
765 
766  for (i = 0; i < 4; i++) {
767  xvid_enc_frame.input.plane[i] = picture->data[i];
768  xvid_enc_frame.input.stride[i] = picture->linesize[i];
769  }
770 
771  /* Encoder Flags */
772  xvid_enc_frame.vop_flags = x->vop_flags;
773  xvid_enc_frame.vol_flags = x->vol_flags;
774  xvid_enc_frame.motion = x->me_flags;
775  xvid_enc_frame.type =
776  picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
777  picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
778  picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
779  XVID_TYPE_AUTO;
780 
781  /* Pixel aspect ratio setting */
782  if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
783  avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
784  av_log(avctx, AV_LOG_WARNING,
785  "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
788  avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
789  }
790  xvid_enc_frame.par = XVID_PAR_EXT;
791  xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
792  xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
793 
794  /* Quant Setting */
795  if (x->qscale)
796  xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
797  else
798  xvid_enc_frame.quant = 0;
799 
800  /* Matrices */
801  xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
802  xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
803 
804  /* Encode */
805  xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
806  &xvid_enc_frame, &xvid_enc_stats);
807 
808  /* Two-pass log buffer swapping */
809  avctx->stats_out = NULL;
810  if (x->twopassbuffer) {
811  tmp = x->old_twopassbuffer;
813  x->twopassbuffer = tmp;
814  x->twopassbuffer[0] = 0;
815  if (x->old_twopassbuffer[0] != 0) {
816  avctx->stats_out = x->old_twopassbuffer;
817  }
818  }
819 
820  if (xerr > 0) {
821  int pict_type;
822 
823  *got_packet = 1;
824 
825  if (xvid_enc_stats.type == XVID_TYPE_PVOP)
826  pict_type = AV_PICTURE_TYPE_P;
827  else if (xvid_enc_stats.type == XVID_TYPE_BVOP)
828  pict_type = AV_PICTURE_TYPE_B;
829  else if (xvid_enc_stats.type == XVID_TYPE_SVOP)
830  pict_type = AV_PICTURE_TYPE_S;
831  else
832  pict_type = AV_PICTURE_TYPE_I;
833 
834 #if FF_API_CODED_FRAME
836  avctx->coded_frame->pict_type = pict_type;
837  avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
839 #endif
840 
841  ff_side_data_set_encoder_stats(pkt, xvid_enc_stats.quant * FF_QP2LAMBDA, NULL, 0, pict_type);
842 
843  if (xvid_enc_frame.out_flags & XVID_KEYFRAME) {
844 #if FF_API_CODED_FRAME
846  avctx->coded_frame->key_frame = 1;
848 #endif
849  pkt->flags |= AV_PKT_FLAG_KEY;
850  if (x->quicktime_format)
851  return xvid_strip_vol_header(avctx, pkt,
852  xvid_enc_stats.hlength, xerr);
853  } else {
854 #if FF_API_CODED_FRAME
856  avctx->coded_frame->key_frame = 0;
858 #endif
859  }
860 
861  pkt->size = xerr;
862 
863  return 0;
864  } else {
865  if (!user_packet)
866  av_packet_unref(pkt);
867  if (!xerr)
868  return 0;
869  av_log(avctx, AV_LOG_ERROR,
870  "Xvid: Encoding Error Occurred: %i\n", xerr);
871  return AVERROR_EXTERNAL;
872  }
873 }
874 
876 {
877  struct xvid_context *x = avctx->priv_data;
878 
879  if (x->encoder_handle) {
880  xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
881  x->encoder_handle = NULL;
882  }
883 
884  av_freep(&avctx->extradata);
885  if (x->twopassbuffer) {
886  av_freep(&x->twopassbuffer);
888  avctx->stats_out = NULL;
889  }
890  if (x->twopassfd>=0) {
891  unlink(x->twopassfile);
892  close(x->twopassfd);
893  x->twopassfd = -1;
894  }
895  av_freep(&x->twopassfile);
896  av_freep(&x->intra_matrix);
897  av_freep(&x->inter_matrix);
898 
899  return 0;
900 }
901 
902 #define OFFSET(x) offsetof(struct xvid_context, x)
903 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
904 static const AVOption options[] = {
905  { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
906  { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
907  { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
908  { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
909  { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
910  { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
911  { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
912  { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
913  { "me_quality", "Motion estimation quality", OFFSET(me_quality), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 6, VE },
914  { "mpeg_quant", "Use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
915  { NULL },
916 };
917 
918 static const AVClass xvid_class = {
919  .class_name = "libxvid",
920  .item_name = av_default_item_name,
921  .option = options,
922  .version = LIBAVUTIL_VERSION_INT,
923 };
924 
926  .name = "libxvid",
927  .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
928  .type = AVMEDIA_TYPE_VIDEO,
929  .id = AV_CODEC_ID_MPEG4,
930  .priv_data_size = sizeof(struct xvid_context),
931  .init = xvid_encode_init,
932  .encode2 = xvid_encode_frame,
933  .close = xvid_encode_close,
934  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
935  .priv_class = &xvid_class,
936  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
938  .wrapper_name = "libxvid",
939 };
#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 NULL
Definition: coverity.c:32
S(GMC)-VOP MPEG-4.
Definition: avutil.h:277
int size
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
AVOption.
Definition: opt.h:246
char * old_twopassbuffer
Old character buffer (two-pass)
Definition: libxvid.c:77
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:728
AVCodec ff_libxvid_encoder
Definition: libxvid.c:925
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int64_t bit_rate
the average bitrate
Definition: avcodec.h:576
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
Memory handling functions.
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:786
#define BUFFER_REMAINING(x)
Definition: libxvid.c:59
int num
Numerator.
Definition: rational.h:59
int size
Definition: packet.h:356
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
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:905
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
int avpriv_tempfile(const char *prefix, char **filename, int log_offset, void *log_ctx)
Wrapper to work around the lack of mkstemp() on mingw.
Definition: file_open.c:110
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:1553
unsigned char * intra_matrix
P-Frame Quant Matrix.
Definition: libxvid.c:80
static AVPacket pkt
int ysize
Frame y size.
Definition: libxvid.c:70
AVCodec.
Definition: codec.h:190
int me_flags
Motion Estimation flags.
Definition: libxvid.c:73
frame_type
common functions for use with the Xvid wrappers
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:649
int xsize
Frame x size.
Definition: libxvid.c:69
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_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: encode.c:32
#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
#define av_cold
Definition: attributes.h:88
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
AVOptions.
static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet)
Definition: libxvid.c:734
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:795
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:627
int quicktime_format
Are we in a QT-based format?
Definition: libxvid.c:75
Misc file utilities.
uint8_t * data
Definition: packet.h:355
struct xvid_context * context
Pointer to private context.
Definition: libxvid.c:96
static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt, unsigned int header_len, unsigned int frame_len)
Routine to create a global VO/VOL header for MP4 container.
Definition: libxvid.c:282
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
float lumi_masking
luminance masking (0-> disabled)
Definition: avcodec.h:845
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:1545
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:222
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
Dispatch function for our custom plugin.
Definition: libxvid.c:250
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int twopassfd
Definition: libxvid.c:79
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:279
#define MAX_MB_BYTES
Definition: mpegutils.h:47
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
int qmax
maximum quantizer
Definition: avcodec.h:1375
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:606
simple assert() macros that are a bit more flexible than ISO C assert().
int64_t av_gcd(int64_t a, int64_t b)
Compute the greatest common divisor of two integer operands.
Definition: mathematics.c:37
const char * name
Name of the codec implementation.
Definition: codec.h:197
int me_quality
Motion estimation quality.
Definition: libxvid.c:87
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
#define OFFSET(x)
Definition: libxvid.c:902
static int xvid_encode_close(AVCodecContext *avctx)
Definition: libxvid.c:875
char * twopassfile
second pass temp file name
Definition: libxvid.c:78
common internal API header
static const AVOption options[]
Definition: libxvid.c:904
#define BUFFER_SIZE
Buffer management macros.
Definition: libxvid.c:58
int vop_flags
VOP flags for Xvid encoder.
Definition: libxvid.c:71
Structure for the private first-pass plugin.
Definition: libxvid.c:94
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:383
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:275
int variance_aq
Variance adaptive quantization.
Definition: libxvid.c:83
#define AV_CODEC_FLAG_AC_PRED
H.263 advanced intra coding / MPEG-4 AC prediction.
Definition: avcodec.h:338
Structure for the private Xvid context.
Definition: libxvid.c:66
int width
picture width / height.
Definition: avcodec.h:699
static const AVClass xvid_class
Definition: libxvid.c:918
unsigned char * inter_matrix
I-Frame Quant Matrix.
Definition: libxvid.c:81
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:296
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:423
#define AV_RL32
Definition: intreadwrite.h:146
int mb_decision
macroblock decision mode
Definition: avcodec.h:1014
#define FF_ARRAY_ELEMS(a)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:1785
int ssim_acc
SSIM accuracy.
Definition: libxvid.c:85
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
Libavcodec external API header.
attribute_deprecated int mpeg_quant
Definition: avcodec.h:821
#define BUFFER_CAT(x)
Definition: libxvid.c:60
enum AVCodecID codec_id
Definition: avcodec.h:536
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
main external API structure.
Definition: avcodec.h:526
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:605
int qmin
minimum quantizer
Definition: avcodec.h:1368
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> (&#39;D&#39;<<24) + (&#39;C&#39;<<16) + (&#39;B&#39;<<8) + &#39;A&#39;).
Definition: avcodec.h:551
int extradata_size
Definition: avcodec.h:628
uint16_t * intra_matrix
custom intra quantization matrix Must be allocated with the av_malloc() family of functions...
Definition: avcodec.h:1026
Describe the class of an AVClass context structure.
Definition: log.h:67
char * twopassbuffer
Character buffer for two-pass.
Definition: libxvid.c:76
float b_quant_offset
qscale offset between IP and B-frames
Definition: avcodec.h:808
#define snprintf
Definition: snprintf.h:34
static av_cold int xvid_encode_init(AVCodecContext *avctx)
Definition: libxvid.c:374
int version
Xvid version.
Definition: libxvid.c:95
static av_always_inline av_const float roundf(float x)
Definition: libm.h:451
uint16_t * inter_matrix
custom inter quantization matrix Must be allocated with the av_malloc() family of functions...
Definition: avcodec.h:1035
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:287
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
#define AV_CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:329
int mpeg_quant
Quantization type.
Definition: libxvid.c:88
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:721
int ssim
SSIM information display mode.
Definition: libxvid.c:84
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:279
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int vol_flags
VOL flags for Xvid encoder.
Definition: libxvid.c:72
Bi-dir predicted.
Definition: avutil.h:276
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:1776
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:35
int den
Denominator.
Definition: rational.h:60
static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
Initialize the two-pass plugin and context.
Definition: libxvid.c:121
int trellis
trellis RD quantization
Definition: avcodec.h:1475
static int xvid_ff_2pass_before(struct xvid_context *ref, xvid_plg_data_t *param)
Enable fast encode mode during the first pass.
Definition: libxvid.c:169
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:300
void * encoder_handle
Handle for Xvid encoder.
Definition: libxvid.c:68
void * priv_data
Definition: avcodec.h:553
static int xvid_ff_2pass_after(struct xvid_context *ref, xvid_plg_data_t *param)
Capture statistic data and write it during first pass.
Definition: libxvid.c:213
#define av_free(p)
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:378
#define VE
Definition: libxvid.c:903
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:227
static int xvid_ff_2pass_destroy(struct xvid_context *ref, xvid_plg_destroy_t *param)
Destroy the two-pass plugin context.
Definition: libxvid.c:152
static void xvid_correct_framerate(AVCodecContext *avctx)
Routine to correct a possibly erroneous framerate being fed to us.
Definition: libxvid.c:324
#define av_freep(p)
#define AV_CODEC_FLAG_CLOSED_GOP
Definition: avcodec.h:343
int qscale
Do we use constant scale?
Definition: libxvid.c:74
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: packet.h:332
Predicted.
Definition: avutil.h:275
int lumi_aq
Lumi masking as an aq method.
Definition: libxvid.c:82
static uint8_t tmp[11]
Definition: aes_ctr.c:26