FFmpeg  4.4.5
roqvideoenc.c
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1 /*
2  * RoQ Video Encoder.
3  *
4  * Copyright (C) 2007 Vitor Sessak <vitor1001@gmail.com>
5  * Copyright (C) 2004-2007 Eric Lasota
6  * Based on RoQ specs (C) 2001 Tim Ferguson
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 /**
26  * @file
27  * id RoQ encoder by Vitor. Based on the Switchblade3 library and the
28  * Switchblade3 FFmpeg glue by Eric Lasota.
29  */
30 
31 /*
32  * COSTS:
33  * Level 1:
34  * SKIP - 2 bits
35  * MOTION - 2 + 8 bits
36  * CODEBOOK - 2 + 8 bits
37  * SUBDIVIDE - 2 + combined subcel cost
38  *
39  * Level 2:
40  * SKIP - 2 bits
41  * MOTION - 2 + 8 bits
42  * CODEBOOK - 2 + 8 bits
43  * SUBDIVIDE - 2 + 4*8 bits
44  *
45  * Maximum cost: 138 bits per cel
46  *
47  * Proper evaluation requires LCD fraction comparison, which requires
48  * Squared Error (SE) loss * savings increase
49  *
50  * Maximum savings increase: 136 bits
51  * Maximum SE loss without overflow: 31580641
52  * Components in 8x8 supercel: 192
53  * Maximum SE precision per component: 164482
54  * >65025, so no truncation is needed (phew)
55  */
56 
57 #include <string.h>
58 
59 #include "libavutil/attributes.h"
60 #include "libavutil/lfg.h"
61 #include "libavutil/opt.h"
62 #include "roqvideo.h"
63 #include "bytestream.h"
64 #include "elbg.h"
65 #include "internal.h"
66 #include "mathops.h"
67 
68 #define CHROMA_BIAS 1
69 
70 /**
71  * Maximum number of generated 4x4 codebooks. Can't be 256 to workaround a
72  * Quake 3 bug.
73  */
74 #define MAX_CBS_4x4 256
75 
76 #define MAX_CBS_2x2 256 ///< Maximum number of 2x2 codebooks.
77 
78 /* The cast is useful when multiplying it by INT_MAX */
79 #define ROQ_LAMBDA_SCALE ((uint64_t) FF_LAMBDA_SCALE)
80 
81 typedef struct RoqCodebooks {
82  int numCB4;
83  int numCB2;
89 } RoqCodebooks;
90 
91 /**
92  * Temporary vars
93  */
94 typedef struct RoqTempData
95 {
100 
102 
103  int numCB4;
104  int numCB2;
105 
107 
108  int used_option[4];
109 } RoqTempData;
110 
111 typedef struct SubcelEvaluation {
112  int eval_dist[4];
115 
116  int subCels[4];
118  int cbEntry;
120 
121 typedef struct CelEvaluation {
122  int eval_dist[4];
124 
126 
128  int cbEntry;
129 
131 } CelEvaluation;
132 
133 typedef struct RoqEncContext {
136  uint64_t lambda;
137 
140 
143 
144  unsigned int framesSinceKeyframe;
145 
151 
154  int *points; // Allocated together with closest_cb
155 
157  int quake3_compat; // Quake 3 compatibility option
158 } RoqEncContext;
159 
160 /* Macroblock support functions */
161 static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3])
162 {
163  memcpy(u , cell->y, 4);
164  memset(u+4, cell->u, 4);
165  memset(u+8, cell->v, 4);
166 }
167 
168 static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4*4*3])
169 {
170  int i,cp;
171  static const int offsets[4] = {0, 2, 8, 10};
172 
173  for (cp=0; cp<3; cp++)
174  for (i=0; i<4; i++) {
175  u[4*4*cp + offsets[i] ] = cb2[qcell->idx[i]*2*2*3 + 4*cp ];
176  u[4*4*cp + offsets[i]+1] = cb2[qcell->idx[i]*2*2*3 + 4*cp+1];
177  u[4*4*cp + offsets[i]+4] = cb2[qcell->idx[i]*2*2*3 + 4*cp+2];
178  u[4*4*cp + offsets[i]+5] = cb2[qcell->idx[i]*2*2*3 + 4*cp+3];
179  }
180 }
181 
182 
183 static void enlarge_roq_mb4(uint8_t base[3*16], uint8_t u[3*64])
184 {
185  int x,y,cp;
186 
187  for(cp=0; cp<3; cp++)
188  for(y=0; y<8; y++)
189  for(x=0; x<8; x++)
190  *u++ = base[(y/2)*4 + (x/2) + 16*cp];
191 }
192 
193 static inline int square(int x)
194 {
195  return x*x;
196 }
197 
198 static inline int eval_sse(const uint8_t *a, const uint8_t *b, int count)
199 {
200  int diff=0;
201 
202  while(count--)
203  diff += square(*b++ - *a++);
204 
205  return diff;
206 }
207 
208 // FIXME Could use DSPContext.sse, but it is not so speed critical (used
209 // just for motion estimation).
210 static int block_sse(uint8_t * const *buf1, uint8_t * const *buf2, int x1, int y1,
211  int x2, int y2, const int *stride1, const int *stride2, int size)
212 {
213  int i, k;
214  int sse=0;
215 
216  for (k=0; k<3; k++) {
217  int bias = (k ? CHROMA_BIAS : 4);
218  for (i=0; i<size; i++)
219  sse += bias*eval_sse(buf1[k] + (y1+i)*stride1[k] + x1,
220  buf2[k] + (y2+i)*stride2[k] + x2, size);
221  }
222 
223  return sse;
224 }
225 
226 static int eval_motion_dist(RoqEncContext *enc, int x, int y, motion_vect vect,
227  int size)
228 {
229  RoqContext *const roq = &enc->common;
230  int mx=vect.d[0];
231  int my=vect.d[1];
232 
233  if (mx < -7 || mx > 7)
234  return INT_MAX;
235 
236  if (my < -7 || my > 7)
237  return INT_MAX;
238 
239  mx += x;
240  my += y;
241 
242  if ((unsigned) mx > roq->width-size || (unsigned) my > roq->height-size)
243  return INT_MAX;
244 
245  return block_sse(enc->frame_to_enc->data, roq->last_frame->data, x, y,
246  mx, my,
248  size);
249 }
250 
251 /**
252  * @return distortion between two macroblocks
253  */
254 static inline int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size)
255 {
256  int cp, sdiff=0;
257 
258  for(cp=0;cp<3;cp++) {
259  int bias = (cp ? CHROMA_BIAS : 4);
260  sdiff += bias*eval_sse(a, b, size*size);
261  a += size*size;
262  b += size*size;
263  }
264 
265  return sdiff;
266 }
267 
268 /**
269  * Initialize cel evaluators and set their source coordinates
270  */
272 {
273  RoqContext *const roq = &enc->common;
274 
275  enc->cel_evals = av_malloc_array(roq->width * roq->height / 64, sizeof(CelEvaluation));
276  if (!enc->cel_evals)
277  return AVERROR(ENOMEM);
278 
279  /* Map to the ROQ quadtree order */
280  for (int y = 0, n = 0; y < roq->height; y += 16)
281  for (int x = 0; x < roq->width; x += 16)
282  for(int i = 0; i < 4; i++) {
283  enc->cel_evals[n ].sourceX = x + (i&1)*8;
284  enc->cel_evals[n++].sourceY = y + (i&2)*4;
285  }
286 
287  return 0;
288 }
289 
290 /**
291  * Get macroblocks from parts of the image
292  */
293 static void get_frame_mb(const AVFrame *frame, int x, int y, uint8_t mb[], int dim)
294 {
295  int i, j, cp;
296 
297  for (cp=0; cp<3; cp++) {
298  int stride = frame->linesize[cp];
299  for (i=0; i<dim; i++)
300  for (j=0; j<dim; j++)
301  *mb++ = frame->data[cp][(y+i)*stride + x + j];
302  }
303 }
304 
305 /**
306  * Find the codebook with the lowest distortion from an image
307  */
308 static int index_mb(uint8_t cluster[], uint8_t cb[], int numCB,
309  int *outIndex, int dim)
310 {
311  int i, lDiff = INT_MAX, pick=0;
312 
313  /* Diff against the others */
314  for (i=0; i<numCB; i++) {
315  int diff = squared_diff_macroblock(cluster, cb + i*dim*dim*3, dim);
316  if (diff < lDiff) {
317  lDiff = diff;
318  pick = i;
319  }
320  }
321 
322  *outIndex = pick;
323  return lDiff;
324 }
325 
326 #define EVAL_MOTION(MOTION) \
327  do { \
328  diff = eval_motion_dist(enc, j, i, MOTION, blocksize); \
329  \
330  if (diff < lowestdiff) { \
331  lowestdiff = diff; \
332  bestpick = MOTION; \
333  } \
334  } while(0)
335 
336 static void motion_search(RoqEncContext *enc, int blocksize)
337 {
338  static const motion_vect offsets[8] = {
339  {{ 0,-1}},
340  {{ 0, 1}},
341  {{-1, 0}},
342  {{ 1, 0}},
343  {{-1, 1}},
344  {{ 1,-1}},
345  {{-1,-1}},
346  {{ 1, 1}},
347  };
348 
349  RoqContext *const roq = &enc->common;
350  int diff, lowestdiff, oldbest;
351  int off[3];
352  motion_vect bestpick = {{0,0}};
353  int i, j, k, offset;
354 
355  motion_vect *last_motion;
356  motion_vect *this_motion;
357  motion_vect vect, vect2;
358  const int max = (roq->width / blocksize) * roq->height / blocksize;
359 
360  if (blocksize == 4) {
361  last_motion = enc->last_motion4;
362  this_motion = enc->this_motion4;
363  } else {
364  last_motion = enc->last_motion8;
365  this_motion = enc->this_motion8;
366  }
367 
368  for (i = 0; i< roq->height; i += blocksize)
369  for (j = 0; j < roq->width; j += blocksize) {
370  lowestdiff = eval_motion_dist(enc, j, i, (motion_vect) {{0,0}},
371  blocksize);
372  bestpick.d[0] = 0;
373  bestpick.d[1] = 0;
374 
375  if (blocksize == 4)
376  EVAL_MOTION(enc->this_motion8[(i/8) * (roq->width/8) + j/8]);
377 
378  offset = (i/blocksize) * roq->width / blocksize + j / blocksize;
379  if (offset < max && offset >= 0)
380  EVAL_MOTION(last_motion[offset]);
381 
382  offset++;
383  if (offset < max && offset >= 0)
384  EVAL_MOTION(last_motion[offset]);
385 
386  offset = (i/blocksize + 1) * roq->width / blocksize + j / blocksize;
387  if (offset < max && offset >= 0)
388  EVAL_MOTION(last_motion[offset]);
389 
390  off[0]= (i/blocksize) * roq->width / blocksize + j/blocksize - 1;
391  off[1]= off[0] - roq->width / blocksize + 1;
392  off[2]= off[1] + 1;
393 
394  if (i) {
395 
396  for(k=0; k<2; k++)
397  vect.d[k]= mid_pred(this_motion[off[0]].d[k],
398  this_motion[off[1]].d[k],
399  this_motion[off[2]].d[k]);
400 
401  EVAL_MOTION(vect);
402  for(k=0; k<3; k++)
403  EVAL_MOTION(this_motion[off[k]]);
404  } else if(j)
405  EVAL_MOTION(this_motion[off[0]]);
406 
407  vect = bestpick;
408 
409  oldbest = -1;
410  while (oldbest != lowestdiff) {
411  oldbest = lowestdiff;
412  for (k=0; k<8; k++) {
413  vect2 = vect;
414  vect2.d[0] += offsets[k].d[0];
415  vect2.d[1] += offsets[k].d[1];
416  EVAL_MOTION(vect2);
417  }
418  vect = bestpick;
419  }
420  offset = (i/blocksize) * roq->width / blocksize + j/blocksize;
421  this_motion[offset] = bestpick;
422  }
423 }
424 
425 /**
426  * Get distortion for all options available to a subcel
427  */
428 static void gather_data_for_subcel(SubcelEvaluation *subcel, int x,
429  int y, RoqEncContext *enc)
430 {
431  RoqContext *const roq = &enc->common;
432  RoqTempData *const tempData = &enc->tmp_data;
433  uint8_t mb4[4*4*3];
434  uint8_t mb2[2*2*3];
435  int cluster_index;
436  int i, best_dist;
437 
438  static const int bitsUsed[4] = {2, 10, 10, 34};
439 
440  if (enc->framesSinceKeyframe >= 1) {
441  subcel->motion = enc->this_motion4[y * roq->width / 16 + x / 4];
442 
443  subcel->eval_dist[RoQ_ID_FCC] =
444  eval_motion_dist(enc, x, y,
445  enc->this_motion4[y * roq->width / 16 + x / 4], 4);
446  } else
447  subcel->eval_dist[RoQ_ID_FCC] = INT_MAX;
448 
449  if (enc->framesSinceKeyframe >= 2)
451  roq->current_frame->data, x,
452  y, x, y,
453  enc->frame_to_enc->linesize,
454  roq->current_frame->linesize,
455  4);
456  else
457  subcel->eval_dist[RoQ_ID_MOT] = INT_MAX;
458 
459  cluster_index = y * roq->width / 16 + x / 4;
460 
461  get_frame_mb(enc->frame_to_enc, x, y, mb4, 4);
462 
463  subcel->eval_dist[RoQ_ID_SLD] = index_mb(mb4,
464  tempData->codebooks.unpacked_cb4,
465  tempData->codebooks.numCB4,
466  &subcel->cbEntry, 4);
467 
468  subcel->eval_dist[RoQ_ID_CCC] = 0;
469 
470  for(i=0;i<4;i++) {
471  subcel->subCels[i] = enc->closest_cb[cluster_index*4+i];
472 
473  get_frame_mb(enc->frame_to_enc, x+2*(i&1),
474  y+(i&2), mb2, 2);
475 
476  subcel->eval_dist[RoQ_ID_CCC] +=
477  squared_diff_macroblock(tempData->codebooks.unpacked_cb2 + subcel->subCels[i]*2*2*3, mb2, 2);
478  }
479 
480  best_dist = INT_MAX;
481  for (i=0; i<4; i++)
482  if (ROQ_LAMBDA_SCALE*subcel->eval_dist[i] + enc->lambda*bitsUsed[i] <
483  best_dist) {
484  subcel->best_coding = i;
485  subcel->best_bit_use = bitsUsed[i];
486  best_dist = ROQ_LAMBDA_SCALE*subcel->eval_dist[i] +
487  enc->lambda*bitsUsed[i];
488  }
489 }
490 
491 /**
492  * Get distortion for all options available to a cel
493  */
495 {
496  RoqContext *const roq = &enc->common;
497  RoqTempData *const tempData = &enc->tmp_data;
498  uint8_t mb8[8*8*3];
499  int index = cel->sourceY * roq->width / 64 + cel->sourceX/8;
500  int i, j, best_dist, divide_bit_use;
501 
502  int bitsUsed[4] = {2, 10, 10, 0};
503 
504  if (enc->framesSinceKeyframe >= 1) {
505  cel->motion = enc->this_motion8[index];
506 
507  cel->eval_dist[RoQ_ID_FCC] =
508  eval_motion_dist(enc, cel->sourceX, cel->sourceY,
509  enc->this_motion8[index], 8);
510  } else
511  cel->eval_dist[RoQ_ID_FCC] = INT_MAX;
512 
513  if (enc->framesSinceKeyframe >= 2)
515  roq->current_frame->data,
516  cel->sourceX, cel->sourceY,
517  cel->sourceX, cel->sourceY,
518  enc->frame_to_enc->linesize,
519  roq->current_frame->linesize,8);
520  else
521  cel->eval_dist[RoQ_ID_MOT] = INT_MAX;
522 
523  get_frame_mb(enc->frame_to_enc, cel->sourceX, cel->sourceY, mb8, 8);
524 
525  cel->eval_dist[RoQ_ID_SLD] =
527  tempData->codebooks.numCB4, &cel->cbEntry, 8);
528 
529  gather_data_for_subcel(cel->subCels + 0, cel->sourceX+0, cel->sourceY+0, enc);
530  gather_data_for_subcel(cel->subCels + 1, cel->sourceX+4, cel->sourceY+0, enc);
531  gather_data_for_subcel(cel->subCels + 2, cel->sourceX+0, cel->sourceY+4, enc);
532  gather_data_for_subcel(cel->subCels + 3, cel->sourceX+4, cel->sourceY+4, enc);
533 
534  cel->eval_dist[RoQ_ID_CCC] = 0;
535  divide_bit_use = 0;
536  for (i=0; i<4; i++) {
537  cel->eval_dist[RoQ_ID_CCC] +=
538  cel->subCels[i].eval_dist[cel->subCels[i].best_coding];
539  divide_bit_use += cel->subCels[i].best_bit_use;
540  }
541 
542  best_dist = INT_MAX;
543  bitsUsed[3] = 2 + divide_bit_use;
544 
545  for (i=0; i<4; i++)
546  if (ROQ_LAMBDA_SCALE*cel->eval_dist[i] + enc->lambda*bitsUsed[i] <
547  best_dist) {
548  cel->best_coding = i;
549  best_dist = ROQ_LAMBDA_SCALE*cel->eval_dist[i] +
550  enc->lambda*bitsUsed[i];
551  }
552 
553  tempData->used_option[cel->best_coding]++;
554  tempData->mainChunkSize += bitsUsed[cel->best_coding];
555 
556  if (cel->best_coding == RoQ_ID_SLD)
557  tempData->codebooks.usedCB4[cel->cbEntry]++;
558 
559  if (cel->best_coding == RoQ_ID_CCC)
560  for (i=0; i<4; i++) {
561  if (cel->subCels[i].best_coding == RoQ_ID_SLD)
562  tempData->codebooks.usedCB4[cel->subCels[i].cbEntry]++;
563  else if (cel->subCels[i].best_coding == RoQ_ID_CCC)
564  for (j=0; j<4; j++)
565  tempData->codebooks.usedCB2[cel->subCels[i].subCels[j]]++;
566  }
567 }
568 
570 {
571  RoqContext *const roq = &enc->common;
572  RoqTempData *const tempData = &enc->tmp_data;
573  int i, j, idx=0;
574 
575  /* Make remaps for the final codebook usage */
576  for (i=0; i<(enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4); i++) {
577  if (tempData->codebooks.usedCB4[i]) {
578  tempData->i2f4[i] = idx;
579  tempData->f2i4[idx] = i;
580  for (j=0; j<4; j++)
581  tempData->codebooks.usedCB2[roq->cb4x4[i].idx[j]]++;
582  idx++;
583  }
584  }
585 
586  tempData->numCB4 = idx;
587 
588  idx = 0;
589  for (i=0; i<MAX_CBS_2x2; i++) {
590  if (tempData->codebooks.usedCB2[i]) {
591  tempData->i2f2[i] = idx;
592  tempData->f2i2[idx] = i;
593  idx++;
594  }
595  }
596  tempData->numCB2 = idx;
597 
598 }
599 
600 /**
601  * Write codebook chunk
602  */
604 {
605  RoqContext *const roq = &enc->common;
606  RoqTempData *const tempData = &enc->tmp_data;
607  int i, j;
608  uint8_t **outp= &enc->out_buf;
609 
610  if (tempData->numCB2) {
611  bytestream_put_le16(outp, RoQ_QUAD_CODEBOOK);
612  bytestream_put_le32(outp, tempData->numCB2*6 + tempData->numCB4*4);
613  bytestream_put_byte(outp, tempData->numCB4);
614  bytestream_put_byte(outp, tempData->numCB2);
615 
616  for (i=0; i<tempData->numCB2; i++) {
617  bytestream_put_buffer(outp, roq->cb2x2[tempData->f2i2[i]].y, 4);
618  bytestream_put_byte(outp, roq->cb2x2[tempData->f2i2[i]].u);
619  bytestream_put_byte(outp, roq->cb2x2[tempData->f2i2[i]].v);
620  }
621 
622  for (i=0; i<tempData->numCB4; i++)
623  for (j=0; j<4; j++)
624  bytestream_put_byte(outp, tempData->i2f2[roq->cb4x4[tempData->f2i4[i]].idx[j]]);
625 
626  }
627 }
628 
629 static inline uint8_t motion_arg(motion_vect mot)
630 {
631  uint8_t ax = 8 - ((uint8_t) mot.d[0]);
632  uint8_t ay = 8 - ((uint8_t) mot.d[1]);
633  return ((ax&15)<<4) | (ay&15);
634 }
635 
636 typedef struct CodingSpool {
642 } CodingSpool;
643 
644 /* NOTE: Typecodes must be spooled AFTER arguments!! */
646 {
647  s->typeSpool |= (type & 3) << (14 - s->typeSpoolLength);
648  s->typeSpoolLength += 2;
649  if (s->typeSpoolLength == 16) {
650  bytestream_put_le16(s->pout, s->typeSpool);
651  bytestream_put_buffer(s->pout, s->argumentSpool,
652  s->args - s->argumentSpool);
653  s->typeSpoolLength = 0;
654  s->typeSpool = 0;
655  s->args = s->argumentSpool;
656  }
657 }
658 
660  int w, int h, int numBlocks)
661 {
662  RoqContext *const roq = &enc->common;
663  RoqTempData *const tempData = &enc->tmp_data;
664  int i, j, k;
665  int x, y;
666  int subX, subY;
667  int dist=0;
668 
669  roq_qcell *qcell;
670  CelEvaluation *eval;
671 
672  CodingSpool spool;
673 
674  spool.typeSpool=0;
675  spool.typeSpoolLength=0;
676  spool.args = spool.argumentSpool;
677  spool.pout = &enc->out_buf;
678 
679  if (tempData->used_option[RoQ_ID_CCC]%2)
680  tempData->mainChunkSize+=8; //FIXME
681 
682  /* Write the video chunk header */
683  bytestream_put_le16(&enc->out_buf, RoQ_QUAD_VQ);
684  bytestream_put_le32(&enc->out_buf, tempData->mainChunkSize/8);
685  bytestream_put_byte(&enc->out_buf, 0x0);
686  bytestream_put_byte(&enc->out_buf, 0x0);
687 
688  for (i=0; i<numBlocks; i++) {
689  eval = enc->cel_evals + i;
690 
691  x = eval->sourceX;
692  y = eval->sourceY;
693  dist += eval->eval_dist[eval->best_coding];
694 
695  switch (eval->best_coding) {
696  case RoQ_ID_MOT:
697  write_typecode(&spool, RoQ_ID_MOT);
698  break;
699 
700  case RoQ_ID_FCC:
701  bytestream_put_byte(&spool.args, motion_arg(eval->motion));
702 
703  write_typecode(&spool, RoQ_ID_FCC);
704  ff_apply_motion_8x8(roq, x, y,
705  eval->motion.d[0], eval->motion.d[1]);
706  break;
707 
708  case RoQ_ID_SLD:
709  bytestream_put_byte(&spool.args, tempData->i2f4[eval->cbEntry]);
710  write_typecode(&spool, RoQ_ID_SLD);
711 
712  qcell = roq->cb4x4 + eval->cbEntry;
713  ff_apply_vector_4x4(roq, x , y , roq->cb2x2 + qcell->idx[0]);
714  ff_apply_vector_4x4(roq, x+4, y , roq->cb2x2 + qcell->idx[1]);
715  ff_apply_vector_4x4(roq, x , y+4, roq->cb2x2 + qcell->idx[2]);
716  ff_apply_vector_4x4(roq, x+4, y+4, roq->cb2x2 + qcell->idx[3]);
717  break;
718 
719  case RoQ_ID_CCC:
720  write_typecode(&spool, RoQ_ID_CCC);
721 
722  for (j=0; j<4; j++) {
723  subX = x + 4*(j&1);
724  subY = y + 2*(j&2);
725 
726  switch(eval->subCels[j].best_coding) {
727  case RoQ_ID_MOT:
728  break;
729 
730  case RoQ_ID_FCC:
731  bytestream_put_byte(&spool.args,
732  motion_arg(eval->subCels[j].motion));
733 
734  ff_apply_motion_4x4(roq, subX, subY,
735  eval->subCels[j].motion.d[0],
736  eval->subCels[j].motion.d[1]);
737  break;
738 
739  case RoQ_ID_SLD:
740  bytestream_put_byte(&spool.args,
741  tempData->i2f4[eval->subCels[j].cbEntry]);
742 
743  qcell = roq->cb4x4 + eval->subCels[j].cbEntry;
744 
745  ff_apply_vector_2x2(roq, subX , subY ,
746  roq->cb2x2 + qcell->idx[0]);
747  ff_apply_vector_2x2(roq, subX+2, subY ,
748  roq->cb2x2 + qcell->idx[1]);
749  ff_apply_vector_2x2(roq, subX , subY+2,
750  roq->cb2x2 + qcell->idx[2]);
751  ff_apply_vector_2x2(roq, subX+2, subY+2,
752  roq->cb2x2 + qcell->idx[3]);
753  break;
754 
755  case RoQ_ID_CCC:
756  for (k=0; k<4; k++) {
757  int cb_idx = eval->subCels[j].subCels[k];
758  bytestream_put_byte(&spool.args,
759  tempData->i2f2[cb_idx]);
760 
761  ff_apply_vector_2x2(roq, subX + 2*(k&1), subY + (k&2),
762  roq->cb2x2 + cb_idx);
763  }
764  break;
765  }
766  write_typecode(&spool, eval->subCels[j].best_coding);
767  }
768  break;
769  }
770  }
771 
772  /* Flush the remainder of the argument/type spool */
773  while (spool.typeSpoolLength)
774  write_typecode(&spool, 0x0);
775 }
776 
777 
778 /**
779  * Create a single YUV cell from a 2x2 section of the image
780  */
781 static inline void frame_block_to_cell(int *block, uint8_t * const *data,
782  int top, int left, const int *stride)
783 {
784  int i, j, u=0, v=0;
785 
786  for (i=0; i<2; i++)
787  for (j=0; j<2; j++) {
788  int x = (top+i)*stride[0] + left + j;
789  *block++ = data[0][x];
790  x = (top+i)*stride[1] + left + j;
791  u += data[1][x];
792  v += data[2][x];
793  }
794 
795  *block++ = (u + 2) / 4 * CHROMA_BIAS;
796  *block++ = (v + 2) / 4 * CHROMA_BIAS;
797 }
798 
799 /**
800  * Create YUV clusters for the entire image
801  */
802 static void create_clusters(const AVFrame *frame, int w, int h, int *points)
803 {
804  int i, j, k, l;
805 
806  for (i=0; i<h; i+=4)
807  for (j=0; j<w; j+=4) {
808  for (k=0; k < 2; k++)
809  for (l=0; l < 2; l++)
810  frame_block_to_cell(points + (l + 2*k)*6, frame->data,
811  i+2*k, j+2*l, frame->linesize);
812  points += 24;
813  }
814 }
815 
817  int *points, int inputCount, roq_cell *results,
818  int size, int cbsize)
819 {
820  int i, j, k, ret = 0;
821  int c_size = size*size/4;
822  int *buf;
823  int *codebook = enc->tmp_codebook_buf;
824  int *closest_cb = enc->closest_cb;
825 
826  ret = avpriv_init_elbg(points, 6 * c_size, inputCount, codebook,
827  cbsize, 1, closest_cb, &enc->randctx);
828  if (ret < 0)
829  return ret;
830  ret = avpriv_do_elbg(points, 6 * c_size, inputCount, codebook,
831  cbsize, 1, closest_cb, &enc->randctx);
832  if (ret < 0)
833  return ret;
834 
835  buf = codebook;
836  for (i=0; i<cbsize; i++)
837  for (k=0; k<c_size; k++) {
838  for(j=0; j<4; j++)
839  results->y[j] = *buf++;
840 
841  results->u = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
842  results->v = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
843  results++;
844  }
845  return 0;
846 }
847 
849 {
850  int i, j, ret = 0;
851  RoqCodebooks *codebooks = &enc->tmp_data.codebooks;
852  RoqContext *const roq = &enc->common;
853  int max = roq->width * roq->height / 16;
854  uint8_t mb2[3*4];
855  int *points = enc->points;
856 
857  /* Subsample YUV data */
858  create_clusters(enc->frame_to_enc, roq->width, roq->height, points);
859 
860  codebooks->numCB4 = (enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4);
861 
862  /* Create 4x4 codebooks */
863  if ((ret = generate_codebook(enc, points, max, enc->results4,
864  4, codebooks->numCB4)) < 0)
865  return ret;
866 
867  /* Create 2x2 codebooks */
868  if ((ret = generate_codebook(enc, points, max * 4,
869  roq->cb2x2, 2, MAX_CBS_2x2)) < 0)
870  return ret;
871 
872  codebooks->numCB2 = MAX_CBS_2x2;
873 
874  /* Unpack 2x2 codebook clusters */
875  for (i=0; i<codebooks->numCB2; i++)
876  unpack_roq_cell(roq->cb2x2 + i, codebooks->unpacked_cb2 + i*2*2*3);
877 
878  /* Index all 4x4 entries to the 2x2 entries, unpack, and enlarge */
879  for (i=0; i<codebooks->numCB4; i++) {
880  for (j=0; j<4; j++) {
881  unpack_roq_cell(&enc->results4[4*i + j], mb2);
882  index_mb(mb2, codebooks->unpacked_cb2, codebooks->numCB2,
883  &roq->cb4x4[i].idx[j], 2);
884  }
885  unpack_roq_qcell(codebooks->unpacked_cb2, roq->cb4x4 + i,
886  codebooks->unpacked_cb4 + i*4*4*3);
887  enlarge_roq_mb4(codebooks->unpacked_cb4 + i*4*4*3,
888  codebooks->unpacked_cb4_enlarged + i*8*8*3);
889  }
890 
891  return 0;
892 }
893 
895 {
896  RoqTempData *const tempData = &enc->tmp_data;
897  RoqContext *const roq = &enc->common;
898  int ret;
899 
900  memset(tempData, 0, sizeof(*tempData));
901 
902  ret = generate_new_codebooks(enc);
903  if (ret < 0)
904  return ret;
905 
906  if (enc->framesSinceKeyframe >= 1) {
907  motion_search(enc, 8);
908  motion_search(enc, 4);
909  }
910 
911  retry_encode:
912  for (int i = 0; i < roq->width * roq->height / 64; i++)
913  gather_data_for_cel(enc->cel_evals + i, enc);
914 
915  /* Quake 3 can't handle chunks bigger than 65535 bytes */
916  if (tempData->mainChunkSize/8 > 65535 && enc->quake3_compat) {
917  if (enc->lambda > 100000) {
918  av_log(roq->avctx, AV_LOG_ERROR, "Cannot encode video in Quake compatible form\n");
919  return AVERROR(EINVAL);
920  }
921  av_log(roq->avctx, AV_LOG_ERROR,
922  "Warning, generated a frame too big for Quake (%d > 65535), "
923  "now switching to a bigger qscale value.\n",
924  tempData->mainChunkSize/8);
925  enc->lambda *= 1.5;
926  tempData->mainChunkSize = 0;
927  memset(tempData->used_option, 0, sizeof(tempData->used_option));
928  memset(tempData->codebooks.usedCB4, 0,
929  sizeof(tempData->codebooks.usedCB4));
930  memset(tempData->codebooks.usedCB2, 0,
931  sizeof(tempData->codebooks.usedCB2));
932 
933  goto retry_encode;
934  }
935 
936  remap_codebooks(enc);
937 
938  write_codebooks(enc);
939 
940  reconstruct_and_encode_image(enc, roq->width, roq->height,
941  roq->width * roq->height / 64);
942 
943  /* Rotate frame history */
944  FFSWAP(AVFrame *, roq->current_frame, roq->last_frame);
947 
948  enc->framesSinceKeyframe++;
949 
950  return 0;
951 }
952 
954 {
955  RoqEncContext *const enc = avctx->priv_data;
956 
959 
960  av_freep(&enc->cel_evals);
961  av_freep(&enc->closest_cb);
962  av_freep(&enc->this_motion4);
963  av_freep(&enc->last_motion4);
964  av_freep(&enc->this_motion8);
965  av_freep(&enc->last_motion8);
966 
967  return 0;
968 }
969 
971 {
972  RoqEncContext *const enc = avctx->priv_data;
973  RoqContext *const roq = &enc->common;
974 
975  av_lfg_init(&enc->randctx, 1);
976 
977  roq->avctx = avctx;
978 
979  enc->framesSinceKeyframe = 0;
980  if ((avctx->width & 0xf) || (avctx->height & 0xf)) {
981  av_log(avctx, AV_LOG_ERROR, "Dimensions must be divisible by 16\n");
982  return AVERROR(EINVAL);
983  }
984 
985  if (avctx->width > 65535 || avctx->height > 65535) {
986  av_log(avctx, AV_LOG_ERROR, "Dimensions are max %d\n", enc->quake3_compat ? 32768 : 65535);
987  return AVERROR(EINVAL);
988  }
989 
990  if (((avctx->width)&(avctx->width-1))||((avctx->height)&(avctx->height-1)))
991  av_log(avctx, AV_LOG_ERROR, "Warning: dimensions not power of two, this is not supported by quake\n");
992 
993  roq->width = avctx->width;
994  roq->height = avctx->height;
995 
996  enc->framesSinceKeyframe = 0;
997  enc->first_frame = 1;
998 
999  roq->last_frame = av_frame_alloc();
1000  roq->current_frame = av_frame_alloc();
1001  if (!roq->last_frame || !roq->current_frame)
1002  return AVERROR(ENOMEM);
1003 
1004  enc->this_motion4 =
1005  av_mallocz_array(roq->width * roq->height / 16, sizeof(motion_vect));
1006 
1007  enc->last_motion4 =
1008  av_malloc_array (roq->width * roq->height / 16, sizeof(motion_vect));
1009 
1010  enc->this_motion8 =
1011  av_mallocz_array(roq->width * roq->height / 64, sizeof(motion_vect));
1012 
1013  enc->last_motion8 =
1014  av_malloc_array (roq->width * roq->height / 64, sizeof(motion_vect));
1015 
1016  /* 4x4 codebook needs 6 * 4 * 4 / 4 * width * height / 16 * sizeof(int);
1017  * and so does the points buffer. */
1018  enc->closest_cb =
1019  av_malloc_array(roq->width * roq->height, 3 * sizeof(int));
1020 
1021  if (!enc->this_motion4 || !enc->last_motion4 ||
1022  !enc->this_motion8 || !enc->last_motion8 || !enc->closest_cb)
1023  return AVERROR(ENOMEM);
1024 
1025  enc->points = enc->closest_cb + roq->width * roq->height * 3 / 2;
1026 
1027  return create_cel_evals(enc);
1028 }
1029 
1031 {
1032  /* ROQ info chunk */
1033  bytestream_put_le16(&enc->out_buf, RoQ_INFO);
1034 
1035  /* Size: 8 bytes */
1036  bytestream_put_le32(&enc->out_buf, 8);
1037 
1038  /* Unused argument */
1039  bytestream_put_byte(&enc->out_buf, 0x00);
1040  bytestream_put_byte(&enc->out_buf, 0x00);
1041 
1042  /* Width */
1043  bytestream_put_le16(&enc->out_buf, enc->common.width);
1044 
1045  /* Height */
1046  bytestream_put_le16(&enc->out_buf, enc->common.height);
1047 
1048  /* Unused in Quake 3, mimics the output of the real encoder */
1049  bytestream_put_byte(&enc->out_buf, 0x08);
1050  bytestream_put_byte(&enc->out_buf, 0x00);
1051  bytestream_put_byte(&enc->out_buf, 0x04);
1052  bytestream_put_byte(&enc->out_buf, 0x00);
1053 }
1054 
1056  const AVFrame *frame, int *got_packet)
1057 {
1058  RoqEncContext *const enc = avctx->priv_data;
1059  RoqContext *const roq = &enc->common;
1060  int size, ret;
1061 
1062  roq->avctx = avctx;
1063 
1064  enc->frame_to_enc = frame;
1065 
1066  if (frame->quality)
1067  enc->lambda = frame->quality - 1;
1068  else
1069  enc->lambda = 2*ROQ_LAMBDA_SCALE;
1070 
1071  /* 138 bits max per 8x8 block +
1072  * 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
1073  size = ((roq->width * roq->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8;
1074  if ((ret = ff_alloc_packet2(avctx, pkt, size, 0)) < 0)
1075  return ret;
1076  enc->out_buf = pkt->data;
1077 
1078  /* Check for I-frame */
1079  if (enc->framesSinceKeyframe == avctx->gop_size)
1080  enc->framesSinceKeyframe = 0;
1081 
1082  if (enc->first_frame) {
1083  /* Alloc memory for the reconstruction data (we must know the stride
1084  for that) */
1085  if ((ret = ff_get_buffer(avctx, roq->current_frame, 0)) < 0 ||
1086  (ret = ff_get_buffer(avctx, roq->last_frame, 0)) < 0)
1087  return ret;
1088 
1089  /* Before the first video frame, write a "video info" chunk */
1091 
1092  enc->first_frame = 0;
1093  }
1094 
1095  /* Encode the actual frame */
1096  ret = roq_encode_video(enc);
1097  if (ret < 0)
1098  return ret;
1099 
1100  pkt->size = enc->out_buf - pkt->data;
1101  if (enc->framesSinceKeyframe == 1)
1103  *got_packet = 1;
1104 
1105  return 0;
1106 }
1107 
1108 #define OFFSET(x) offsetof(RoqEncContext, x)
1109 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1110 static const AVOption options[] = {
1111  { "quake3_compat", "Whether to respect known limitations in Quake 3 decoder", OFFSET(quake3_compat), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE },
1112  { NULL },
1113 };
1114 
1115 static const AVClass roq_class = {
1116  .class_name = "RoQ",
1117  .item_name = av_default_item_name,
1118  .option = options,
1119  .version = LIBAVUTIL_VERSION_INT,
1120 };
1121 
1123  .name = "roqvideo",
1124  .long_name = NULL_IF_CONFIG_SMALL("id RoQ video"),
1125  .type = AVMEDIA_TYPE_VIDEO,
1126  .id = AV_CODEC_ID_ROQ,
1127  .priv_data_size = sizeof(RoqEncContext),
1128  .init = roq_encode_init,
1129  .encode2 = roq_encode_frame,
1130  .close = roq_encode_end,
1131  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVJ444P,
1132  AV_PIX_FMT_NONE },
1133  .priv_class = &roq_class,
1134  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1135 };
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:88
uint8_t
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:372
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
#define s(width, name)
Definition: cbs_vp9.c:257
static const unsigned codebook[256][2]
Definition: cfhdenc.c:42
#define FFSWAP(type, a, b)
Definition: common.h:108
#define FFMAX(a, b)
Definition: common.h:103
#define NULL
Definition: coverity.c:32
#define max(a, b)
Definition: cuda_runtime.h:33
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1900
static AVFrame * frame
int avpriv_init_elbg(int *points, int dim, int numpoints, int *codebook, int numCB, int max_steps, int *closest_cb, AVLFG *rand_state)
Initialize the **codebook vector for the elbg algorithm.
Definition: elbg.c:337
int avpriv_do_elbg(int *points, int dim, int numpoints, int *codebook, int numCB, int max_steps, int *closest_cb, AVLFG *rand_state)
Implementation of the Enhanced LBG Algorithm Based on the paper "Neural Networks 14:1219-1237" that c...
Definition: elbg.c:371
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:33
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_CODEC_ID_ROQ
Definition: codec_id.h:87
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
#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
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int index
Definition: gxfenc.c:89
static const int offsets[]
Definition: hevc_pel.c:34
cl_device_type type
int i
Definition: input.c:407
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:32
#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:49
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:309
uint8_t w
Definition: llviddspenc.c:39
int stride
Definition: mace.c:144
#define mid_pred
Definition: mathops.h:97
static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
const char data[16]
Definition: mxf.c:142
AVOptions.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:71
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:133
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:41
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:139
#define RoQ_ID_SLD
Definition: roqvideo.h:59
#define RoQ_ID_CCC
Definition: roqvideo.h:60
#define RoQ_ID_FCC
Definition: roqvideo.h:58
#define RoQ_ID_MOT
Definition: roqvideo.h:57
#define RoQ_QUAD_CODEBOOK
Definition: roqvideo.h:52
#define RoQ_INFO
Definition: roqvideo.h:51
#define RoQ_QUAD_VQ
Definition: roqvideo.h:53
static av_cold int roq_encode_init(AVCodecContext *avctx)
Definition: roqvideoenc.c:970
static void get_frame_mb(const AVFrame *frame, int x, int y, uint8_t mb[], int dim)
Get macroblocks from parts of the image.
Definition: roqvideoenc.c:293
AVCodec ff_roq_encoder
Definition: roqvideoenc.c:1122
static void gather_data_for_cel(CelEvaluation *cel, RoqEncContext *enc)
Get distortion for all options available to a cel.
Definition: roqvideoenc.c:494
static const AVOption options[]
Definition: roqvideoenc.c:1110
#define VE
Definition: roqvideoenc.c:1109
static uint8_t motion_arg(motion_vect mot)
Definition: roqvideoenc.c:629
static void gather_data_for_subcel(SubcelEvaluation *subcel, int x, int y, RoqEncContext *enc)
Get distortion for all options available to a subcel.
Definition: roqvideoenc.c:428
static void frame_block_to_cell(int *block, uint8_t *const *data, int top, int left, const int *stride)
Create a single YUV cell from a 2x2 section of the image.
Definition: roqvideoenc.c:781
static void roq_write_video_info_chunk(RoqEncContext *enc)
Definition: roqvideoenc.c:1030
static const AVClass roq_class
Definition: roqvideoenc.c:1115
static void create_clusters(const AVFrame *frame, int w, int h, int *points)
Create YUV clusters for the entire image.
Definition: roqvideoenc.c:802
#define MAX_CBS_2x2
Maximum number of 2x2 codebooks.
Definition: roqvideoenc.c:76
static av_cold int roq_encode_end(AVCodecContext *avctx)
Definition: roqvideoenc.c:953
static int block_sse(uint8_t *const *buf1, uint8_t *const *buf2, int x1, int y1, int x2, int y2, const int *stride1, const int *stride2, int size)
Definition: roqvideoenc.c:210
static int create_cel_evals(RoqEncContext *enc)
Initialize cel evaluators and set their source coordinates.
Definition: roqvideoenc.c:271
static int eval_motion_dist(RoqEncContext *enc, int x, int y, motion_vect vect, int size)
Definition: roqvideoenc.c:226
static int index_mb(uint8_t cluster[], uint8_t cb[], int numCB, int *outIndex, int dim)
Find the codebook with the lowest distortion from an image.
Definition: roqvideoenc.c:308
static void motion_search(RoqEncContext *enc, int blocksize)
Definition: roqvideoenc.c:336
static void reconstruct_and_encode_image(RoqEncContext *enc, int w, int h, int numBlocks)
Definition: roqvideoenc.c:659
#define EVAL_MOTION(MOTION)
Definition: roqvideoenc.c:326
static int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size)
Definition: roqvideoenc.c:254
static int eval_sse(const uint8_t *a, const uint8_t *b, int count)
Definition: roqvideoenc.c:198
#define ROQ_LAMBDA_SCALE
Definition: roqvideoenc.c:79
static int generate_new_codebooks(RoqEncContext *enc)
Definition: roqvideoenc.c:848
static int square(int x)
Definition: roqvideoenc.c:193
static int roq_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: roqvideoenc.c:1055
static void write_typecode(CodingSpool *s, uint8_t type)
Definition: roqvideoenc.c:645
static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4 *4 *3])
Definition: roqvideoenc.c:168
static void remap_codebooks(RoqEncContext *enc)
Definition: roqvideoenc.c:569
#define OFFSET(x)
Definition: roqvideoenc.c:1108
#define CHROMA_BIAS
Definition: roqvideoenc.c:68
#define MAX_CBS_4x4
Maximum number of generated 4x4 codebooks.
Definition: roqvideoenc.c:74
static void unpack_roq_cell(roq_cell *cell, uint8_t u[4 *3])
Definition: roqvideoenc.c:161
static void enlarge_roq_mb4(uint8_t base[3 *16], uint8_t u[3 *64])
Definition: roqvideoenc.c:183
static int roq_encode_video(RoqEncContext *enc)
Definition: roqvideoenc.c:894
static void write_codebooks(RoqEncContext *enc)
Write codebook chunk.
Definition: roqvideoenc.c:603
static int generate_codebook(RoqEncContext *enc, int *points, int inputCount, roq_cell *results, int size, int cbsize)
Definition: roqvideoenc.c:816
Describe the class of an AVClass context structure.
Definition: log.h:67
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
main external API structure.
Definition: avcodec.h:536
int width
picture width / height.
Definition: avcodec.h:709
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:731
void * priv_data
Definition: avcodec.h:563
AVCodec.
Definition: codec.h:197
const char * name
Name of the codec implementation.
Definition: codec.h:204
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:441
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
Context structure for the Lagged Fibonacci PRNG.
Definition: lfg.h:33
AVOption.
Definition: opt.h:248
This structure stores compressed data.
Definition: packet.h:346
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
uint8_t * data
Definition: packet.h:369
motion_vect motion
Definition: roqvideoenc.c:127
int eval_dist[4]
Definition: roqvideoenc.c:122
SubcelEvaluation subCels[4]
Definition: roqvideoenc.c:125
uint8_t ** pout
Definition: roqvideoenc.c:641
uint8_t * args
Definition: roqvideoenc.c:640
int typeSpoolLength
Definition: roqvideoenc.c:638
uint8_t argumentSpool[64]
Definition: roqvideoenc.c:639
int usedCB2[MAX_CBS_2x2]
Definition: roqvideoenc.c:84
uint8_t unpacked_cb4[MAX_CBS_4x4 *4 *4 *3]
Definition: roqvideoenc.c:87
uint8_t unpacked_cb2[MAX_CBS_2x2 *2 *2 *3]
Definition: roqvideoenc.c:86
int usedCB4[MAX_CBS_4x4]
Definition: roqvideoenc.c:85
uint8_t unpacked_cb4_enlarged[MAX_CBS_4x4 *8 *8 *3]
Definition: roqvideoenc.c:88
AVCodecContext * avctx
Definition: roqvideo.h:42
AVFrame * current_frame
Definition: roqvideo.h:44
roq_cell cb2x2[256]
Definition: roqvideo.h:47
int width
Definition: roqvideo.h:45
int height
Definition: roqvideo.h:45
AVFrame * last_frame
Definition: roqvideo.h:43
roq_qcell cb4x4[256]
Definition: roqvideo.h:48
motion_vect * last_motion8
Definition: roqvideoenc.c:142
motion_vect * this_motion8
Definition: roqvideoenc.c:141
CelEvaluation * cel_evals
Definition: roqvideoenc.c:152
int * closest_cb
Definition: roqvideoenc.c:153
const AVFrame * frame_to_enc
Definition: roqvideoenc.c:146
motion_vect * this_motion4
Definition: roqvideoenc.c:138
roq_cell results4[4 *MAX_CBS_4x4]
Definition: roqvideoenc.c:149
RoqContext common
Definition: roqvideoenc.c:134
unsigned int framesSinceKeyframe
Definition: roqvideoenc.c:144
int tmp_codebook_buf[FFMAX(24 *MAX_CBS_4x4, 6 *MAX_CBS_2x2)]
Definition: roqvideoenc.c:150
uint64_t lambda
Definition: roqvideoenc.c:136
uint8_t * out_buf
Definition: roqvideoenc.c:147
motion_vect * last_motion4
Definition: roqvideoenc.c:139
RoqTempData tmp_data
Definition: roqvideoenc.c:148
Temporary vars.
Definition: roqvideoenc.c:95
RoqCodebooks codebooks
Definition: roqvideoenc.c:106
int i2f4[MAX_CBS_4x4]
Definition: roqvideoenc.c:97
int i2f2[MAX_CBS_2x2]
Definition: roqvideoenc.c:99
int f2i2[MAX_CBS_2x2]
Definition: roqvideoenc.c:98
int f2i4[MAX_CBS_4x4]
Definition: roqvideoenc.c:96
int mainChunkSize
Definition: roqvideoenc.c:101
int used_option[4]
Definition: roqvideoenc.c:108
motion_vect motion
Definition: roqvideoenc.c:117
In the ELBG jargon, a cell is the set of points that are closest to a codebook entry.
Definition: elbg.c:39
int d[2]
Definition: roqvideo.h:37
unsigned char u
Definition: roqvideo.h:29
unsigned char y[4]
Definition: roqvideo.h:28
unsigned char v
Definition: roqvideo.h:29
int idx[4]
Definition: roqvideo.h:33
#define av_malloc_array(a, b)
#define av_freep(p)
#define av_log(a,...)
static int16_t block[64]
Definition: dct.c:116
AVPacket * pkt
Definition: movenc.c:59
int size
#define mb
const char * b
Definition: vf_curves.c:118
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:215
if(ret< 0)
Definition: vf_mcdeint.c:282
static av_always_inline int diff(const uint32_t a, const uint32_t b)
static const uint8_t offset[127][2]
Definition: vf_spp.c:107
int dim
uint8_t base
Definition: vp3data.h:141