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libxvid.c
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1 /*
2  * Interface to xvidcore for mpeg4 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 
46 #if HAVE_UNISTD_H
47 #include <unistd.h>
48 #endif
49 
50 #if HAVE_IO_H
51 #include <io.h>
52 #endif
53 
54 /**
55  * Buffer management macros.
56  */
57 #define BUFFER_SIZE 1024
58 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
59 #define BUFFER_CAT(x) (&((x)[strlen(x)]))
60 
61 /**
62  * Structure for the private Xvid context.
63  * This stores all the private context for the codec.
64  */
65 struct xvid_context {
66  AVClass *class;
67  void *encoder_handle; /**< Handle for Xvid encoder */
68  int xsize; /**< Frame x size */
69  int ysize; /**< Frame y size */
70  int vop_flags; /**< VOP flags for Xvid encoder */
71  int vol_flags; /**< VOL flags for Xvid encoder */
72  int me_flags; /**< Motion Estimation flags */
73  int qscale; /**< Do we use constant scale? */
74  int quicktime_format; /**< Are we in a QT-based format? */
75  char *twopassbuffer; /**< Character buffer for two-pass */
76  char *old_twopassbuffer; /**< Old character buffer (two-pass) */
77  char *twopassfile; /**< second pass temp file name */
78  int twopassfd;
79  unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
80  unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
81  int lumi_aq; /**< Lumi masking as an aq method */
82  int variance_aq; /**< Variance adaptive quantization */
83  int ssim; /**< SSIM information display mode */
84  int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */
85  int gmc;
86  int me_quality; /**< Motion estimation quality. 0: fast 6: best. */
87  int mpeg_quant; /**< Quantization type. 0: H263, 1: MPEG */
88 };
89 
90 /**
91  * Structure for the private first-pass plugin.
92  */
93 struct xvid_ff_pass1 {
94  int version; /**< Xvid version */
95  struct xvid_context *context; /**< Pointer to private context */
96 };
97 
98 static int xvid_encode_close(AVCodecContext *avctx);
99 static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
100  const AVFrame *picture, int *got_packet);
101 
102 
103 /*
104  * Xvid 2-Pass Kludge Section
105  *
106  * Xvid's default 2-pass doesn't allow us to create data as we need to, so
107  * this section spends time replacing the first pass plugin so we can write
108  * statistic information as libavcodec requests in. We have another kludge
109  * that allows us to pass data to the second pass in Xvid without a custom
110  * rate-control plugin.
111  */
112 
113 /**
114  * Initialize the two-pass plugin and context.
115  *
116  * @param param Input construction parameter structure
117  * @param handle Private context handle
118  * @return Returns XVID_ERR_xxxx on failure, or 0 on success.
119  */
120 static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
121 {
122  struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param;
123  char *log = x->context->twopassbuffer;
124 
125  /* Do a quick bounds check */
126  if (!log)
127  return XVID_ERR_FAIL;
128 
129  /* We use snprintf() */
130  /* This is because we can safely prevent a buffer overflow */
131  log[0] = 0;
132  snprintf(log, BUFFER_REMAINING(log),
133  "# ffmpeg 2-pass log file, using xvid codec\n");
135  "# Do not modify. libxvidcore version: %d.%d.%d\n\n",
136  XVID_VERSION_MAJOR(XVID_VERSION),
137  XVID_VERSION_MINOR(XVID_VERSION),
138  XVID_VERSION_PATCH(XVID_VERSION));
139 
140  *handle = x->context;
141  return 0;
142 }
143 
144 /**
145  * Destroy the two-pass plugin context.
146  *
147  * @param ref Context pointer for the plugin
148  * @param param Destrooy context
149  * @return Returns 0, success guaranteed
150  */
152  xvid_plg_destroy_t *param)
153 {
154  /* Currently cannot think of anything to do on destruction */
155  /* Still, the framework should be here for reference/use */
156  if (ref->twopassbuffer)
157  ref->twopassbuffer[0] = 0;
158  return 0;
159 }
160 
161 /**
162  * Enable fast encode mode during the first pass.
163  *
164  * @param ref Context pointer for the plugin
165  * @param param Frame data
166  * @return Returns 0, success guaranteed
167  */
169  xvid_plg_data_t *param)
170 {
171  int motion_remove;
172  int motion_replacements;
173  int vop_remove;
174 
175  /* Nothing to do here, result is changed too much */
176  if (param->zone && param->zone->mode == XVID_ZONE_QUANT)
177  return 0;
178 
179  /* We can implement a 'turbo' first pass mode here */
180  param->quant = 2;
181 
182  /* Init values */
183  motion_remove = ~XVID_ME_CHROMA_PVOP &
184  ~XVID_ME_CHROMA_BVOP &
185  ~XVID_ME_EXTSEARCH16 &
186  ~XVID_ME_ADVANCEDDIAMOND16;
187  motion_replacements = XVID_ME_FAST_MODEINTERPOLATE |
188  XVID_ME_SKIP_DELTASEARCH |
189  XVID_ME_FASTREFINE16 |
190  XVID_ME_BFRAME_EARLYSTOP;
191  vop_remove = ~XVID_VOP_MODEDECISION_RD &
192  ~XVID_VOP_FAST_MODEDECISION_RD &
193  ~XVID_VOP_TRELLISQUANT &
194  ~XVID_VOP_INTER4V &
195  ~XVID_VOP_HQACPRED;
196 
197  param->vol_flags &= ~XVID_VOL_GMC;
198  param->vop_flags &= vop_remove;
199  param->motion_flags &= motion_remove;
200  param->motion_flags |= motion_replacements;
201 
202  return 0;
203 }
204 
205 /**
206  * Capture statistic data and write it during first pass.
207  *
208  * @param ref Context pointer for the plugin
209  * @param param Statistic data
210  * @return Returns XVID_ERR_xxxx on failure, or 0 on success
211  */
213  xvid_plg_data_t *param)
214 {
215  char *log = ref->twopassbuffer;
216  const char *frame_types = " ipbs";
217  char frame_type;
218 
219  /* Quick bounds check */
220  if (!log)
221  return XVID_ERR_FAIL;
222 
223  /* Convert the type given to us into a character */
224  if (param->type < 5 && param->type > 0)
225  frame_type = frame_types[param->type];
226  else
227  return XVID_ERR_FAIL;
228 
230  "%c %d %d %d %d %d %d\n",
231  frame_type, param->stats.quant, param->stats.kblks,
232  param->stats.mblks, param->stats.ublks,
233  param->stats.length, param->stats.hlength);
234 
235  return 0;
236 }
237 
238 /**
239  * Dispatch function for our custom plugin.
240  * This handles the dispatch for the Xvid plugin. It passes data
241  * on to other functions for actual processing.
242  *
243  * @param ref Context pointer for the plugin
244  * @param cmd The task given for us to complete
245  * @param p1 First parameter (varies)
246  * @param p2 Second parameter (varies)
247  * @return Returns XVID_ERR_xxxx on failure, or 0 on success
248  */
249 static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
250 {
251  switch (cmd) {
252  case XVID_PLG_INFO:
253  case XVID_PLG_FRAME:
254  return 0;
255  case XVID_PLG_BEFORE:
256  return xvid_ff_2pass_before(ref, p1);
257  case XVID_PLG_CREATE:
258  return xvid_ff_2pass_create(p1, p2);
259  case XVID_PLG_AFTER:
260  return xvid_ff_2pass_after(ref, p1);
261  case XVID_PLG_DESTROY:
262  return xvid_ff_2pass_destroy(ref, p1);
263  default:
264  return XVID_ERR_FAIL;
265  }
266 }
267 
268 /**
269  * Routine to create a global VO/VOL header for MP4 container.
270  * What we do here is extract the header from the Xvid bitstream
271  * as it is encoded. We also strip the repeated headers from the
272  * bitstream when a global header is requested for MPEG-4 ISO
273  * compliance.
274  *
275  * @param avctx AVCodecContext pointer to context
276  * @param frame Pointer to encoded frame data
277  * @param header_len Length of header to search
278  * @param frame_len Length of encoded frame data
279  * @return Returns new length of frame data
280  */
282  unsigned int header_len,
283  unsigned int frame_len)
284 {
285  int vo_len = 0, i;
286 
287  for (i = 0; i < header_len - 3; i++) {
288  if (pkt->data[i] == 0x00 &&
289  pkt->data[i + 1] == 0x00 &&
290  pkt->data[i + 2] == 0x01 &&
291  pkt->data[i + 3] == 0xB6) {
292  vo_len = i;
293  break;
294  }
295  }
296 
297  if (vo_len > 0) {
298  /* We need to store the header, so extract it */
299  if (!avctx->extradata) {
300  avctx->extradata = av_malloc(vo_len);
301  if (!avctx->extradata)
302  return AVERROR(ENOMEM);
303  memcpy(avctx->extradata, pkt->data, vo_len);
304  avctx->extradata_size = vo_len;
305  }
306  /* Less dangerous now, memmove properly copies the two
307  * chunks of overlapping data */
308  memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len);
309  pkt->size = frame_len - vo_len;
310  }
311  return 0;
312 }
313 
314 /**
315  * Routine to correct a possibly erroneous framerate being fed to us.
316  * Xvid currently chokes on framerates where the ticks per frame is
317  * extremely large. This function works to correct problems in this area
318  * by estimating a new framerate and taking the simpler fraction of
319  * the two presented.
320  *
321  * @param avctx Context that contains the framerate to correct.
322  */
324 {
325  int frate, fbase;
326  int est_frate, est_fbase;
327  int gcd;
328  float est_fps, fps;
329 
330  frate = avctx->time_base.den;
331  fbase = avctx->time_base.num;
332 
333  gcd = av_gcd(frate, fbase);
334  if (gcd > 1) {
335  frate /= gcd;
336  fbase /= gcd;
337  }
338 
339  if (frate <= 65000 && fbase <= 65000) {
340  avctx->time_base.den = frate;
341  avctx->time_base.num = fbase;
342  return;
343  }
344 
345  fps = (float) frate / (float) fbase;
346  est_fps = roundf(fps * 1000.0) / 1000.0;
347 
348  est_frate = (int) est_fps;
349  if (est_fps > (int) est_fps) {
350  est_frate = (est_frate + 1) * 1000;
351  est_fbase = (int) roundf((float) est_frate / est_fps);
352  } else
353  est_fbase = 1;
354 
355  gcd = av_gcd(est_frate, est_fbase);
356  if (gcd > 1) {
357  est_frate /= gcd;
358  est_fbase /= gcd;
359  }
360 
361  if (fbase > est_fbase) {
362  avctx->time_base.den = est_frate;
363  avctx->time_base.num = est_fbase;
364  av_log(avctx, AV_LOG_DEBUG,
365  "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
366  est_fps, (((est_fps - fps) / fps) * 100.0));
367  } else {
368  avctx->time_base.den = frate;
369  avctx->time_base.num = fbase;
370  }
371 }
372 
374 {
375  int xerr, i, ret = -1;
376  int xvid_flags = avctx->flags;
377  struct xvid_context *x = avctx->priv_data;
378  uint16_t *intra, *inter;
379  int fd;
380 
381  xvid_plugin_single_t single = { 0 };
382  struct xvid_ff_pass1 rc2pass1 = { 0 };
383  xvid_plugin_2pass2_t rc2pass2 = { 0 };
384  xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */
385  xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */
386  xvid_plugin_ssim_t ssim = { 0 };
387  xvid_gbl_init_t xvid_gbl_init = { 0 };
388  xvid_enc_create_t xvid_enc_create = { 0 };
389  xvid_enc_plugin_t plugins[4];
390 
391  x->twopassfd = -1;
392 
393  /* Bring in VOP flags from ffmpeg command-line */
394  x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
395  if (xvid_flags & AV_CODEC_FLAG_4MV)
396  x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
397  if (avctx->trellis)
398  x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
399  if (xvid_flags & AV_CODEC_FLAG_AC_PRED)
400  x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
401  if (xvid_flags & AV_CODEC_FLAG_GRAY)
402  x->vop_flags |= XVID_VOP_GREYSCALE;
403 
404  /* Decide which ME quality setting to use */
405  x->me_flags = 0;
406  switch (x->me_quality) {
407  case 6:
408  case 5:
409  x->me_flags |= XVID_ME_EXTSEARCH16 |
410  XVID_ME_EXTSEARCH8;
411  case 4:
412  case 3:
413  x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
414  XVID_ME_HALFPELREFINE8 |
415  XVID_ME_CHROMA_PVOP |
416  XVID_ME_CHROMA_BVOP;
417  case 2:
418  case 1:
419  x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
420  XVID_ME_HALFPELREFINE16;
421 #if FF_API_MOTION_EST
423  break;
424  default:
425  switch (avctx->me_method) {
426  case ME_FULL: /* Quality 6 */
427  x->me_flags |= XVID_ME_EXTSEARCH16 |
428  XVID_ME_EXTSEARCH8;
429  case ME_EPZS: /* Quality 4 */
430  x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 |
431  XVID_ME_HALFPELREFINE8 |
432  XVID_ME_CHROMA_PVOP |
433  XVID_ME_CHROMA_BVOP;
434  case ME_LOG: /* Quality 2 */
435  case ME_PHODS:
436  case ME_X1:
437  x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 |
438  XVID_ME_HALFPELREFINE16;
439  case ME_ZERO: /* Quality 0 */
440  default:
441  break;
442  }
444 #endif
445  }
446 
447  /* Decide how we should decide blocks */
448  switch (avctx->mb_decision) {
449  case 2:
450  x->vop_flags |= XVID_VOP_MODEDECISION_RD;
451  x->me_flags |= XVID_ME_HALFPELREFINE8_RD |
452  XVID_ME_QUARTERPELREFINE8_RD |
453  XVID_ME_EXTSEARCH_RD |
454  XVID_ME_CHECKPREDICTION_RD;
455  case 1:
456  if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD))
457  x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD;
458  x->me_flags |= XVID_ME_HALFPELREFINE16_RD |
459  XVID_ME_QUARTERPELREFINE16_RD;
460  default:
461  break;
462  }
463 
464  /* Bring in VOL flags from ffmpeg command-line */
465 #if FF_API_GMC
466  if (avctx->flags & CODEC_FLAG_GMC)
467  x->gmc = 1;
468 #endif
469 
470  x->vol_flags = 0;
471  if (x->gmc) {
472  x->vol_flags |= XVID_VOL_GMC;
473  x->me_flags |= XVID_ME_GME_REFINE;
474  }
475  if (xvid_flags & AV_CODEC_FLAG_QPEL) {
476  x->vol_flags |= XVID_VOL_QUARTERPEL;
477  x->me_flags |= XVID_ME_QUARTERPELREFINE16;
478  if (x->vop_flags & XVID_VOP_INTER4V)
479  x->me_flags |= XVID_ME_QUARTERPELREFINE8;
480  }
481 
482  xvid_gbl_init.version = XVID_VERSION;
483  xvid_gbl_init.debug = 0;
484  xvid_gbl_init.cpu_flags = 0;
485 
486  /* Initialize */
487  xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);
488 
489  /* Create the encoder reference */
490  xvid_enc_create.version = XVID_VERSION;
491 
492  /* Store the desired frame size */
493  xvid_enc_create.width =
494  x->xsize = avctx->width;
495  xvid_enc_create.height =
496  x->ysize = avctx->height;
497 
498  /* Xvid can determine the proper profile to use */
499  /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
500 
501  /* We don't use zones */
502  xvid_enc_create.zones = NULL;
503  xvid_enc_create.num_zones = 0;
504 
505  xvid_enc_create.num_threads = avctx->thread_count;
506 #if (XVID_VERSION <= 0x010303) && (XVID_VERSION >= 0x010300)
507  /* workaround for a bug in libxvidcore */
508  if (avctx->height <= 16) {
509  if (avctx->thread_count < 2) {
510  xvid_enc_create.num_threads = 0;
511  } else {
512  av_log(avctx, AV_LOG_ERROR,
513  "Too small height for threads > 1.");
514  return AVERROR(EINVAL);
515  }
516  }
517 #endif
518 
519  xvid_enc_create.plugins = plugins;
520  xvid_enc_create.num_plugins = 0;
521 
522  /* Initialize Buffers */
523  x->twopassbuffer = NULL;
524  x->old_twopassbuffer = NULL;
525  x->twopassfile = NULL;
526 
527  if (xvid_flags & AV_CODEC_FLAG_PASS1) {
528  rc2pass1.version = XVID_VERSION;
529  rc2pass1.context = x;
532  if (!x->twopassbuffer || !x->old_twopassbuffer) {
533  av_log(avctx, AV_LOG_ERROR,
534  "Xvid: Cannot allocate 2-pass log buffers\n");
535  return AVERROR(ENOMEM);
536  }
537  x->twopassbuffer[0] =
538  x->old_twopassbuffer[0] = 0;
539 
540  plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass;
541  plugins[xvid_enc_create.num_plugins].param = &rc2pass1;
542  xvid_enc_create.num_plugins++;
543  } else if (xvid_flags & AV_CODEC_FLAG_PASS2) {
544  rc2pass2.version = XVID_VERSION;
545  rc2pass2.bitrate = avctx->bit_rate;
546 
547  fd = avpriv_tempfile("xvidff.", &x->twopassfile, 0, avctx);
548  if (fd < 0) {
549  av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n");
550  return fd;
551  }
552  x->twopassfd = fd;
553 
554  if (!avctx->stats_in) {
555  av_log(avctx, AV_LOG_ERROR,
556  "Xvid: No 2-pass information loaded for second pass\n");
557  return AVERROR(EINVAL);
558  }
559 
560  ret = write(fd, avctx->stats_in, strlen(avctx->stats_in));
561  if (ret == -1)
562  ret = AVERROR(errno);
563  else if (strlen(avctx->stats_in) > ret) {
564  av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n");
565  ret = AVERROR(EIO);
566  }
567  if (ret < 0)
568  return ret;
569 
570  rc2pass2.filename = x->twopassfile;
571  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2;
572  plugins[xvid_enc_create.num_plugins].param = &rc2pass2;
573  xvid_enc_create.num_plugins++;
574  } else if (!(xvid_flags & AV_CODEC_FLAG_QSCALE)) {
575  /* Single Pass Bitrate Control! */
576  single.version = XVID_VERSION;
577  single.bitrate = avctx->bit_rate;
578 
579  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single;
580  plugins[xvid_enc_create.num_plugins].param = &single;
581  xvid_enc_create.num_plugins++;
582  }
583 
584  if (avctx->lumi_masking != 0.0)
585  x->lumi_aq = 1;
586 
587  /* Luminance Masking */
588  if (x->lumi_aq) {
589  masking_l.method = 0;
590  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
591 
592  /* The old behavior is that when avctx->lumi_masking is specified,
593  * plugins[...].param = NULL. Trying to keep the old behavior here. */
594  plugins[xvid_enc_create.num_plugins].param =
595  avctx->lumi_masking ? NULL : &masking_l;
596  xvid_enc_create.num_plugins++;
597  }
598 
599  /* Variance AQ */
600  if (x->variance_aq) {
601  masking_v.method = 1;
602  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking;
603  plugins[xvid_enc_create.num_plugins].param = &masking_v;
604  xvid_enc_create.num_plugins++;
605  }
606 
607  if (x->lumi_aq && x->variance_aq )
608  av_log(avctx, AV_LOG_INFO,
609  "Both lumi_aq and variance_aq are enabled. The resulting quality"
610  "will be the worse one of the two effects made by the AQ.\n");
611 
612  /* SSIM */
613  if (x->ssim) {
614  plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim;
615  ssim.b_printstat = x->ssim == 2;
616  ssim.acc = x->ssim_acc;
617  ssim.cpu_flags = xvid_gbl_init.cpu_flags;
618  ssim.b_visualize = 0;
619  plugins[xvid_enc_create.num_plugins].param = &ssim;
620  xvid_enc_create.num_plugins++;
621  }
622 
623  /* Frame Rate and Key Frames */
624  xvid_correct_framerate(avctx);
625  xvid_enc_create.fincr = avctx->time_base.num;
626  xvid_enc_create.fbase = avctx->time_base.den;
627  if (avctx->gop_size > 0)
628  xvid_enc_create.max_key_interval = avctx->gop_size;
629  else
630  xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
631 
632  /* Quants */
633  if (xvid_flags & AV_CODEC_FLAG_QSCALE)
634  x->qscale = 1;
635  else
636  x->qscale = 0;
637 
638  xvid_enc_create.min_quant[0] = avctx->qmin;
639  xvid_enc_create.min_quant[1] = avctx->qmin;
640  xvid_enc_create.min_quant[2] = avctx->qmin;
641  xvid_enc_create.max_quant[0] = avctx->qmax;
642  xvid_enc_create.max_quant[1] = avctx->qmax;
643  xvid_enc_create.max_quant[2] = avctx->qmax;
644 
645  /* Quant Matrices */
646  x->intra_matrix =
647  x->inter_matrix = NULL;
648 
649 #if FF_API_PRIVATE_OPT
651  if (avctx->mpeg_quant)
652  x->mpeg_quant = avctx->mpeg_quant;
654 #endif
655 
656  if (x->mpeg_quant)
657  x->vol_flags |= XVID_VOL_MPEGQUANT;
658  if ((avctx->intra_matrix || avctx->inter_matrix)) {
659  x->vol_flags |= XVID_VOL_MPEGQUANT;
660 
661  if (avctx->intra_matrix) {
662  intra = avctx->intra_matrix;
663  x->intra_matrix = av_malloc(sizeof(unsigned char) * 64);
664  if (!x->intra_matrix)
665  return AVERROR(ENOMEM);
666  } else
667  intra = NULL;
668  if (avctx->inter_matrix) {
669  inter = avctx->inter_matrix;
670  x->inter_matrix = av_malloc(sizeof(unsigned char) * 64);
671  if (!x->inter_matrix)
672  return AVERROR(ENOMEM);
673  } else
674  inter = NULL;
675 
676  for (i = 0; i < 64; i++) {
677  if (intra)
678  x->intra_matrix[i] = (unsigned char) intra[i];
679  if (inter)
680  x->inter_matrix[i] = (unsigned char) inter[i];
681  }
682  }
683 
684  /* Misc Settings */
685  xvid_enc_create.frame_drop_ratio = 0;
686  xvid_enc_create.global = 0;
687  if (xvid_flags & AV_CODEC_FLAG_CLOSED_GOP)
688  xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP;
689 
690  /* Determines which codec mode we are operating in */
691  avctx->extradata = NULL;
692  avctx->extradata_size = 0;
693  if (xvid_flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
694  /* In this case, we are claiming to be MPEG4 */
695  x->quicktime_format = 1;
696  avctx->codec_id = AV_CODEC_ID_MPEG4;
697  } else {
698  /* We are claiming to be Xvid */
699  x->quicktime_format = 0;
700  if (!avctx->codec_tag)
701  avctx->codec_tag = AV_RL32("xvid");
702  }
703 
704  /* Bframes */
705  xvid_enc_create.max_bframes = avctx->max_b_frames;
706  xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset;
707  xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor;
708  if (avctx->max_b_frames > 0 && !x->quicktime_format)
709  xvid_enc_create.global |= XVID_GLOBAL_PACKED;
710 
711  av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins));
712 
713  /* Encode a dummy frame to get the extradata immediately */
714  if (x->quicktime_format) {
715  AVFrame *picture;
716  AVPacket packet;
717  int size, got_packet, ret;
718 
719  av_init_packet(&packet);
720 
721  picture = av_frame_alloc();
722  if (!picture)
723  return AVERROR(ENOMEM);
724 
725  xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
726  if( xerr ) {
727  av_frame_free(&picture);
728  av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
729  return AVERROR_EXTERNAL;
730  }
731  x->encoder_handle = xvid_enc_create.handle;
732  size = ((avctx->width + 1) & ~1) * ((avctx->height + 1) & ~1);
733  picture->data[0] = av_malloc(size + size / 2);
734  if (!picture->data[0]) {
735  av_frame_free(&picture);
736  return AVERROR(ENOMEM);
737  }
738  picture->data[1] = picture->data[0] + size;
739  picture->data[2] = picture->data[1] + size / 4;
740  memset(picture->data[0], 0, size);
741  memset(picture->data[1], 128, size / 2);
742  ret = xvid_encode_frame(avctx, &packet, picture, &got_packet);
743  if (!ret && got_packet)
744  av_packet_unref(&packet);
745  av_free(picture->data[0]);
746  av_frame_free(&picture);
747  xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
748  }
749 
750  /* Create encoder context */
751  xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
752  if (xerr) {
753  av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
754  return AVERROR_EXTERNAL;
755  }
756 
757  x->encoder_handle = xvid_enc_create.handle;
758 
759  return 0;
760 }
761 
763  const AVFrame *picture, int *got_packet)
764 {
765  int xerr, i, ret, user_packet = !!pkt->data;
766  struct xvid_context *x = avctx->priv_data;
767  int mb_width = (avctx->width + 15) / 16;
768  int mb_height = (avctx->height + 15) / 16;
769  char *tmp;
770 
771  xvid_enc_frame_t xvid_enc_frame = { 0 };
772  xvid_enc_stats_t xvid_enc_stats = { 0 };
773 
774  if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
775  return ret;
776 
777  /* Start setting up the frame */
778  xvid_enc_frame.version = XVID_VERSION;
779  xvid_enc_stats.version = XVID_VERSION;
780 
781  /* Let Xvid know where to put the frame. */
782  xvid_enc_frame.bitstream = pkt->data;
783  xvid_enc_frame.length = pkt->size;
784 
785  /* Initialize input image fields */
786  if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
787  av_log(avctx, AV_LOG_ERROR,
788  "Xvid: Color spaces other than 420P not supported\n");
789  return AVERROR(EINVAL);
790  }
791 
792  xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */
793 
794  for (i = 0; i < 4; i++) {
795  xvid_enc_frame.input.plane[i] = picture->data[i];
796  xvid_enc_frame.input.stride[i] = picture->linesize[i];
797  }
798 
799  /* Encoder Flags */
800  xvid_enc_frame.vop_flags = x->vop_flags;
801  xvid_enc_frame.vol_flags = x->vol_flags;
802  xvid_enc_frame.motion = x->me_flags;
803  xvid_enc_frame.type =
804  picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
805  picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
806  picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
807  XVID_TYPE_AUTO;
808 
809  /* Pixel aspect ratio setting */
810  if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 ||
811  avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) {
812  av_log(avctx, AV_LOG_WARNING,
813  "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
816  avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255);
817  }
818  xvid_enc_frame.par = XVID_PAR_EXT;
819  xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num;
820  xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den;
821 
822  /* Quant Setting */
823  if (x->qscale)
824  xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA;
825  else
826  xvid_enc_frame.quant = 0;
827 
828  /* Matrices */
829  xvid_enc_frame.quant_intra_matrix = x->intra_matrix;
830  xvid_enc_frame.quant_inter_matrix = x->inter_matrix;
831 
832  /* Encode */
833  xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE,
834  &xvid_enc_frame, &xvid_enc_stats);
835 
836  /* Two-pass log buffer swapping */
837  avctx->stats_out = NULL;
838  if (x->twopassbuffer) {
839  tmp = x->old_twopassbuffer;
841  x->twopassbuffer = tmp;
842  x->twopassbuffer[0] = 0;
843  if (x->old_twopassbuffer[0] != 0) {
844  avctx->stats_out = x->old_twopassbuffer;
845  }
846  }
847 
848  if (xerr > 0) {
849  int pict_type;
850 
851  *got_packet = 1;
852 
853  if (xvid_enc_stats.type == XVID_TYPE_PVOP)
854  pict_type = AV_PICTURE_TYPE_P;
855  else if (xvid_enc_stats.type == XVID_TYPE_BVOP)
856  pict_type = AV_PICTURE_TYPE_B;
857  else if (xvid_enc_stats.type == XVID_TYPE_SVOP)
858  pict_type = AV_PICTURE_TYPE_S;
859  else
860  pict_type = AV_PICTURE_TYPE_I;
861 
862 #if FF_API_CODED_FRAME
864  avctx->coded_frame->pict_type = pict_type;
865  avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
867 #endif
868 
869  ff_side_data_set_encoder_stats(pkt, xvid_enc_stats.quant * FF_QP2LAMBDA, NULL, 0, pict_type);
870 
871  if (xvid_enc_frame.out_flags & XVID_KEYFRAME) {
872 #if FF_API_CODED_FRAME
874  avctx->coded_frame->key_frame = 1;
876 #endif
877  pkt->flags |= AV_PKT_FLAG_KEY;
878  if (x->quicktime_format)
879  return xvid_strip_vol_header(avctx, pkt,
880  xvid_enc_stats.hlength, xerr);
881  } else {
882 #if FF_API_CODED_FRAME
884  avctx->coded_frame->key_frame = 0;
886 #endif
887  }
888 
889  pkt->size = xerr;
890 
891  return 0;
892  } else {
893  if (!user_packet)
894  av_packet_unref(pkt);
895  if (!xerr)
896  return 0;
897  av_log(avctx, AV_LOG_ERROR,
898  "Xvid: Encoding Error Occurred: %i\n", xerr);
899  return AVERROR_EXTERNAL;
900  }
901 }
902 
904 {
905  struct xvid_context *x = avctx->priv_data;
906 
907  if (x->encoder_handle) {
908  xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
909  x->encoder_handle = NULL;
910  }
911 
912  av_freep(&avctx->extradata);
913  if (x->twopassbuffer) {
914  av_freep(&x->twopassbuffer);
916  avctx->stats_out = NULL;
917  }
918  if (x->twopassfd>=0) {
919  unlink(x->twopassfile);
920  close(x->twopassfd);
921  x->twopassfd = -1;
922  }
923  av_freep(&x->twopassfile);
924  av_freep(&x->intra_matrix);
925  av_freep(&x->inter_matrix);
926 
927  return 0;
928 }
929 
930 #define OFFSET(x) offsetof(struct xvid_context, x)
931 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
932 static const AVOption options[] = {
933  { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
934  { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
935  { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" },
936  { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" },
937  { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" },
938  { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" },
939  { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE },
940  { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
941  { "me_quality", "Motion estimation quality", OFFSET(me_quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 6, VE },
942  { "mpeg_quant", "Use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
943  { NULL },
944 };
945 
946 static const AVClass xvid_class = {
947  .class_name = "libxvid",
948  .item_name = av_default_item_name,
949  .option = options,
950  .version = LIBAVUTIL_VERSION_INT,
951 };
952 
954  .name = "libxvid",
955  .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
956  .type = AVMEDIA_TYPE_VIDEO,
957  .id = AV_CODEC_ID_MPEG4,
958  .priv_data_size = sizeof(struct xvid_context),
959  .init = xvid_encode_init,
960  .encode2 = xvid_encode_frame,
961  .close = xvid_encode_close,
962  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
963  .priv_class = &xvid_class,
964  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
966 };
#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 MPEG4.
Definition: avutil.h:269
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
AVOption.
Definition: opt.h:245
char * old_twopassbuffer
Old character buffer (two-pass)
Definition: libxvid.c:76
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:626
AVCodec ff_libxvid_encoder
Definition: libxvid.c:953
#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
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:1928
#define BUFFER_REMAINING(x)
Definition: libxvid.c:58
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:1578
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 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:106
char * stats_in
pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed he...
Definition: avcodec.h:2818
unsigned char * intra_matrix
P-Frame Quant Matrix.
Definition: libxvid.c:79
static AVPacket pkt
int ysize
Frame y size.
Definition: libxvid.c:69
AVCodec.
Definition: avcodec.h:3535
int me_flags
Motion Estimation flags.
Definition: libxvid.c:72
attribute_deprecated int me_method
This option does nothing.
Definition: avcodec.h:1877
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:1779
int xsize
Frame x size.
Definition: libxvid.c:68
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
#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:82
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:140
AVOptions.
static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet)
Definition: libxvid.c:762
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
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1757
int quicktime_format
Are we in a QT-based format?
Definition: libxvid.c:74
Misc file utilities.
uint8_t * data
Definition: avcodec.h:1577
struct xvid_context * context
Pointer to private context.
Definition: libxvid.c:95
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:281
ptrdiff_t size
Definition: opengl_enc.c:101
float lumi_masking
luminance masking (0-> disabled)
Definition: avcodec.h:1993
char * stats_out
pass1 encoding statistics output buffer
Definition: avcodec.h:2810
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:855
#define AV_INPUT_BUFFER_MIN_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:735
#define av_log(a,...)
static int ref[MAX_W *MAX_W]
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1609
static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2)
Dispatch function for our custom plugin.
Definition: libxvid.c:249
no search, that is use 0,0 vector whenever one is needed
Definition: avcodec.h:756
reserved for experiments
Definition: avcodec.h:761
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int twopassfd
Definition: libxvid.c:78
#define AV_CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
Definition: avcodec.h:831
#define MAX_MB_BYTES
Definition: mpegutils.h:47
av_default_item_name
#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:153
int qmax
maximum quantizer
Definition: avcodec.h:2591
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1737
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 a and b.
Definition: mathematics.c:37
const char * name
Name of the codec implementation.
Definition: avcodec.h:3542
int me_quality
Motion estimation quality.
Definition: libxvid.c:86
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1583
#define OFFSET(x)
Definition: libxvid.c:930
static int xvid_encode_close(AVCodecContext *avctx)
Definition: libxvid.c:903
char * twopassfile
second pass temp file name
Definition: libxvid.c:77
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
static const AVOption options[]
Definition: libxvid.c:932
#define BUFFER_SIZE
Buffer management macros.
Definition: libxvid.c:57
int vop_flags
VOP flags for Xvid encoder.
Definition: libxvid.c:70
Structure for the private first-pass plugin.
Definition: libxvid.c:93
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:254
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:827
int variance_aq
Variance adaptive quantization.
Definition: libxvid.c:82
#define AV_CODEC_FLAG_AC_PRED
H.263 advanced intra coding / MPEG-4 AC prediction.
Definition: avcodec.h:885
Structure for the private Xvid context.
Definition: libxvid.c:65
int width
picture width / height.
Definition: avcodec.h:1829
static const AVClass xvid_class
Definition: libxvid.c:946
static uint8_t tmp[8]
Definition: des-test.c:38
unsigned char * inter_matrix
I-Frame Quant Matrix.
Definition: libxvid.c:80
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:843
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:290
int mb_decision
macroblock decision mode
Definition: avcodec.h:2204
#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:3072
int ssim_acc
SSIM accuracy.
Definition: libxvid.c:84
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
Libavcodec external API header.
attribute_deprecated int mpeg_quant
Definition: avcodec.h:1969
#define BUFFER_CAT(x)
Definition: libxvid.c:59
enum AVCodecID codec_id
Definition: avcodec.h:1659
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:211
main external API structure.
Definition: avcodec.h:1642
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:549
int qmin
minimum quantizer
Definition: avcodec.h:2584
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1674
int extradata_size
Definition: avcodec.h:1758
uint16_t * intra_matrix
custom intra quantization matrix
Definition: avcodec.h:2214
Describe the class of an AVClass context structure.
Definition: log.h:67
char * twopassbuffer
Character buffer for two-pass.
Definition: libxvid.c:75
float b_quant_offset
qscale offset between IP and B-frames
Definition: avcodec.h:1956
#define snprintf
Definition: snprintf.h:34
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
static av_cold int xvid_encode_init(AVCodecContext *avctx)
Definition: libxvid.c:373
int version
Xvid version.
Definition: libxvid.c:94
static av_always_inline av_const float roundf(float x)
Definition: libm.h:451
uint16_t * inter_matrix
custom inter quantization matrix
Definition: avcodec.h:2221
#define AV_CODEC_FLAG_QPEL
Use qpel MC.
Definition: avcodec.h:839
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:194
#define AV_CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
Definition: avcodec.h:876
int mpeg_quant
Quantization type.
Definition: libxvid.c:87
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1855
int ssim
SSIM information display mode.
Definition: libxvid.c:83
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
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
int vol_flags
VOL flags for Xvid encoder.
Definition: libxvid.c:71
Bi-dir predicted.
Definition: avutil.h:268
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3063
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
int den
denominator
Definition: rational.h:45
static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle)
Initialize the two-pass plugin and context.
Definition: libxvid.c:120
int trellis
trellis RD quantization
Definition: avcodec.h:2740
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:168
#define AV_CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:847
void * encoder_handle
Handle for Xvid encoder.
Definition: libxvid.c:67
void * priv_data
Definition: avcodec.h:1684
#define CODEC_FLAG_GMC
Definition: avcodec.h:1057
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:212
#define av_free(p)
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:249
#define VE
Definition: libxvid.c:931
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
Definition: avutil.h:219
static int xvid_ff_2pass_destroy(struct xvid_context *ref, xvid_plg_destroy_t *param)
Destroy the two-pass plugin context.
Definition: libxvid.c:151
static void xvid_correct_framerate(AVCodecContext *avctx)
Routine to correct a possibly erroneous framerate being fed to us.
Definition: libxvid.c:323
#define av_freep(p)
#define AV_CODEC_FLAG_CLOSED_GOP
Definition: avcodec.h:890
int qscale
Do we use constant scale?
Definition: libxvid.c:73
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1554
Predicted.
Definition: avutil.h:267
int lumi_aq
Lumi masking as an aq method.
Definition: libxvid.c:81