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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/opt.h"
61 #include "roqvideo.h"
62 #include "bytestream.h"
63 #include "elbg.h"
64 #include "internal.h"
65 #include "mathops.h"
66 
67 #define CHROMA_BIAS 1
68 
69 /**
70  * Maximum number of generated 4x4 codebooks. Can't be 256 to workaround a
71  * Quake 3 bug.
72  */
73 #define MAX_CBS_4x4 256
74 
75 #define MAX_CBS_2x2 256 ///< Maximum number of 2x2 codebooks.
76 
77 /* The cast is useful when multiplying it by INT_MAX */
78 #define ROQ_LAMBDA_SCALE ((uint64_t) FF_LAMBDA_SCALE)
79 
80 /* Macroblock support functions */
81 static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3])
82 {
83  memcpy(u , cell->y, 4);
84  memset(u+4, cell->u, 4);
85  memset(u+8, cell->v, 4);
86 }
87 
88 static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4*4*3])
89 {
90  int i,cp;
91  static const int offsets[4] = {0, 2, 8, 10};
92 
93  for (cp=0; cp<3; cp++)
94  for (i=0; i<4; i++) {
95  u[4*4*cp + offsets[i] ] = cb2[qcell->idx[i]*2*2*3 + 4*cp ];
96  u[4*4*cp + offsets[i]+1] = cb2[qcell->idx[i]*2*2*3 + 4*cp+1];
97  u[4*4*cp + offsets[i]+4] = cb2[qcell->idx[i]*2*2*3 + 4*cp+2];
98  u[4*4*cp + offsets[i]+5] = cb2[qcell->idx[i]*2*2*3 + 4*cp+3];
99  }
100 }
101 
102 
103 static void enlarge_roq_mb4(uint8_t base[3*16], uint8_t u[3*64])
104 {
105  int x,y,cp;
106 
107  for(cp=0; cp<3; cp++)
108  for(y=0; y<8; y++)
109  for(x=0; x<8; x++)
110  *u++ = base[(y/2)*4 + (x/2) + 16*cp];
111 }
112 
113 static inline int square(int x)
114 {
115  return x*x;
116 }
117 
118 static inline int eval_sse(const uint8_t *a, const uint8_t *b, int count)
119 {
120  int diff=0;
121 
122  while(count--)
123  diff += square(*b++ - *a++);
124 
125  return diff;
126 }
127 
128 // FIXME Could use DSPContext.sse, but it is not so speed critical (used
129 // just for motion estimation).
130 static int block_sse(uint8_t * const *buf1, uint8_t * const *buf2, int x1, int y1,
131  int x2, int y2, const int *stride1, const int *stride2, int size)
132 {
133  int i, k;
134  int sse=0;
135 
136  for (k=0; k<3; k++) {
137  int bias = (k ? CHROMA_BIAS : 4);
138  for (i=0; i<size; i++)
139  sse += bias*eval_sse(buf1[k] + (y1+i)*stride1[k] + x1,
140  buf2[k] + (y2+i)*stride2[k] + x2, size);
141  }
142 
143  return sse;
144 }
145 
146 static int eval_motion_dist(RoqContext *enc, int x, int y, motion_vect vect,
147  int size)
148 {
149  int mx=vect.d[0];
150  int my=vect.d[1];
151 
152  if (mx < -7 || mx > 7)
153  return INT_MAX;
154 
155  if (my < -7 || my > 7)
156  return INT_MAX;
157 
158  mx += x;
159  my += y;
160 
161  if ((unsigned) mx > enc->width-size || (unsigned) my > enc->height-size)
162  return INT_MAX;
163 
164  return block_sse(enc->frame_to_enc->data, enc->last_frame->data, x, y,
165  mx, my,
167  size);
168 }
169 
170 /**
171  * @return distortion between two macroblocks
172  */
173 static inline int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size)
174 {
175  int cp, sdiff=0;
176 
177  for(cp=0;cp<3;cp++) {
178  int bias = (cp ? CHROMA_BIAS : 4);
179  sdiff += bias*eval_sse(a, b, size*size);
180  a += size*size;
181  b += size*size;
182  }
183 
184  return sdiff;
185 }
186 
187 typedef struct SubcelEvaluation {
188  int eval_dist[4];
191 
192  int subCels[4];
194  int cbEntry;
196 
197 typedef struct CelEvaluation {
198  int eval_dist[4];
200 
202 
204  int cbEntry;
205 
207 } CelEvaluation;
208 
209 typedef struct RoqCodebooks {
210  int numCB4;
211  int numCB2;
217 } RoqCodebooks;
218 
219 /**
220  * Temporary vars
221  */
222 typedef struct RoqTempData
223 {
225 
226  int f2i4[MAX_CBS_4x4];
227  int i2f4[MAX_CBS_4x4];
228  int f2i2[MAX_CBS_2x2];
229  int i2f2[MAX_CBS_2x2];
230 
232 
233  int numCB4;
234  int numCB2;
235 
237 
239  int used_option[4];
240 } RoqTempdata;
241 
242 /**
243  * Initialize cel evaluators and set their source coordinates
244  */
245 static int create_cel_evals(RoqContext *enc, RoqTempdata *tempData)
246 {
247  int n=0, x, y, i;
248 
249  tempData->cel_evals = av_malloc_array(enc->width*enc->height/64, sizeof(CelEvaluation));
250  if (!tempData->cel_evals)
251  return AVERROR(ENOMEM);
252 
253  /* Map to the ROQ quadtree order */
254  for (y=0; y<enc->height; y+=16)
255  for (x=0; x<enc->width; x+=16)
256  for(i=0; i<4; i++) {
257  tempData->cel_evals[n ].sourceX = x + (i&1)*8;
258  tempData->cel_evals[n++].sourceY = y + (i&2)*4;
259  }
260 
261  return 0;
262 }
263 
264 /**
265  * Get macroblocks from parts of the image
266  */
267 static void get_frame_mb(const AVFrame *frame, int x, int y, uint8_t mb[], int dim)
268 {
269  int i, j, cp;
270 
271  for (cp=0; cp<3; cp++) {
272  int stride = frame->linesize[cp];
273  for (i=0; i<dim; i++)
274  for (j=0; j<dim; j++)
275  *mb++ = frame->data[cp][(y+i)*stride + x + j];
276  }
277 }
278 
279 /**
280  * Find the codebook with the lowest distortion from an image
281  */
282 static int index_mb(uint8_t cluster[], uint8_t cb[], int numCB,
283  int *outIndex, int dim)
284 {
285  int i, lDiff = INT_MAX, pick=0;
286 
287  /* Diff against the others */
288  for (i=0; i<numCB; i++) {
289  int diff = squared_diff_macroblock(cluster, cb + i*dim*dim*3, dim);
290  if (diff < lDiff) {
291  lDiff = diff;
292  pick = i;
293  }
294  }
295 
296  *outIndex = pick;
297  return lDiff;
298 }
299 
300 #define EVAL_MOTION(MOTION) \
301  do { \
302  diff = eval_motion_dist(enc, j, i, MOTION, blocksize); \
303  \
304  if (diff < lowestdiff) { \
305  lowestdiff = diff; \
306  bestpick = MOTION; \
307  } \
308  } while(0)
309 
310 static void motion_search(RoqContext *enc, int blocksize)
311 {
312  static const motion_vect offsets[8] = {
313  {{ 0,-1}},
314  {{ 0, 1}},
315  {{-1, 0}},
316  {{ 1, 0}},
317  {{-1, 1}},
318  {{ 1,-1}},
319  {{-1,-1}},
320  {{ 1, 1}},
321  };
322 
323  int diff, lowestdiff, oldbest;
324  int off[3];
325  motion_vect bestpick = {{0,0}};
326  int i, j, k, offset;
327 
328  motion_vect *last_motion;
329  motion_vect *this_motion;
330  motion_vect vect, vect2;
331 
332  int max=(enc->width/blocksize)*enc->height/blocksize;
333 
334  if (blocksize == 4) {
335  last_motion = enc->last_motion4;
336  this_motion = enc->this_motion4;
337  } else {
338  last_motion = enc->last_motion8;
339  this_motion = enc->this_motion8;
340  }
341 
342  for (i=0; i<enc->height; i+=blocksize)
343  for (j=0; j<enc->width; j+=blocksize) {
344  lowestdiff = eval_motion_dist(enc, j, i, (motion_vect) {{0,0}},
345  blocksize);
346  bestpick.d[0] = 0;
347  bestpick.d[1] = 0;
348 
349  if (blocksize == 4)
350  EVAL_MOTION(enc->this_motion8[(i/8)*(enc->width/8) + j/8]);
351 
352  offset = (i/blocksize)*enc->width/blocksize + j/blocksize;
353  if (offset < max && offset >= 0)
354  EVAL_MOTION(last_motion[offset]);
355 
356  offset++;
357  if (offset < max && offset >= 0)
358  EVAL_MOTION(last_motion[offset]);
359 
360  offset = (i/blocksize + 1)*enc->width/blocksize + j/blocksize;
361  if (offset < max && offset >= 0)
362  EVAL_MOTION(last_motion[offset]);
363 
364  off[0]= (i/blocksize)*enc->width/blocksize + j/blocksize - 1;
365  off[1]= off[0] - enc->width/blocksize + 1;
366  off[2]= off[1] + 1;
367 
368  if (i) {
369 
370  for(k=0; k<2; k++)
371  vect.d[k]= mid_pred(this_motion[off[0]].d[k],
372  this_motion[off[1]].d[k],
373  this_motion[off[2]].d[k]);
374 
375  EVAL_MOTION(vect);
376  for(k=0; k<3; k++)
377  EVAL_MOTION(this_motion[off[k]]);
378  } else if(j)
379  EVAL_MOTION(this_motion[off[0]]);
380 
381  vect = bestpick;
382 
383  oldbest = -1;
384  while (oldbest != lowestdiff) {
385  oldbest = lowestdiff;
386  for (k=0; k<8; k++) {
387  vect2 = vect;
388  vect2.d[0] += offsets[k].d[0];
389  vect2.d[1] += offsets[k].d[1];
390  EVAL_MOTION(vect2);
391  }
392  vect = bestpick;
393  }
394  offset = (i/blocksize)*enc->width/blocksize + j/blocksize;
395  this_motion[offset] = bestpick;
396  }
397 }
398 
399 /**
400  * Get distortion for all options available to a subcel
401  */
402 static void gather_data_for_subcel(SubcelEvaluation *subcel, int x,
403  int y, RoqContext *enc, RoqTempdata *tempData)
404 {
405  uint8_t mb4[4*4*3];
406  uint8_t mb2[2*2*3];
407  int cluster_index;
408  int i, best_dist;
409 
410  static const int bitsUsed[4] = {2, 10, 10, 34};
411 
412  if (enc->framesSinceKeyframe >= 1) {
413  subcel->motion = enc->this_motion4[y*enc->width/16 + x/4];
414 
415  subcel->eval_dist[RoQ_ID_FCC] =
416  eval_motion_dist(enc, x, y,
417  enc->this_motion4[y*enc->width/16 + x/4], 4);
418  } else
419  subcel->eval_dist[RoQ_ID_FCC] = INT_MAX;
420 
421  if (enc->framesSinceKeyframe >= 2)
423  enc->current_frame->data, x,
424  y, x, y,
425  enc->frame_to_enc->linesize,
426  enc->current_frame->linesize,
427  4);
428  else
429  subcel->eval_dist[RoQ_ID_MOT] = INT_MAX;
430 
431  cluster_index = y*enc->width/16 + x/4;
432 
433  get_frame_mb(enc->frame_to_enc, x, y, mb4, 4);
434 
435  subcel->eval_dist[RoQ_ID_SLD] = index_mb(mb4,
436  tempData->codebooks.unpacked_cb4,
437  tempData->codebooks.numCB4,
438  &subcel->cbEntry, 4);
439 
440  subcel->eval_dist[RoQ_ID_CCC] = 0;
441 
442  for(i=0;i<4;i++) {
443  subcel->subCels[i] = tempData->closest_cb2[cluster_index*4+i];
444 
445  get_frame_mb(enc->frame_to_enc, x+2*(i&1),
446  y+(i&2), mb2, 2);
447 
448  subcel->eval_dist[RoQ_ID_CCC] +=
449  squared_diff_macroblock(tempData->codebooks.unpacked_cb2 + subcel->subCels[i]*2*2*3, mb2, 2);
450  }
451 
452  best_dist = INT_MAX;
453  for (i=0; i<4; i++)
454  if (ROQ_LAMBDA_SCALE*subcel->eval_dist[i] + enc->lambda*bitsUsed[i] <
455  best_dist) {
456  subcel->best_coding = i;
457  subcel->best_bit_use = bitsUsed[i];
458  best_dist = ROQ_LAMBDA_SCALE*subcel->eval_dist[i] +
459  enc->lambda*bitsUsed[i];
460  }
461 }
462 
463 /**
464  * Get distortion for all options available to a cel
465  */
467  RoqTempdata *tempData)
468 {
469  uint8_t mb8[8*8*3];
470  int index = cel->sourceY*enc->width/64 + cel->sourceX/8;
471  int i, j, best_dist, divide_bit_use;
472 
473  int bitsUsed[4] = {2, 10, 10, 0};
474 
475  if (enc->framesSinceKeyframe >= 1) {
476  cel->motion = enc->this_motion8[index];
477 
478  cel->eval_dist[RoQ_ID_FCC] =
479  eval_motion_dist(enc, cel->sourceX, cel->sourceY,
480  enc->this_motion8[index], 8);
481  } else
482  cel->eval_dist[RoQ_ID_FCC] = INT_MAX;
483 
484  if (enc->framesSinceKeyframe >= 2)
486  enc->current_frame->data,
487  cel->sourceX, cel->sourceY,
488  cel->sourceX, cel->sourceY,
489  enc->frame_to_enc->linesize,
490  enc->current_frame->linesize,8);
491  else
492  cel->eval_dist[RoQ_ID_MOT] = INT_MAX;
493 
494  get_frame_mb(enc->frame_to_enc, cel->sourceX, cel->sourceY, mb8, 8);
495 
496  cel->eval_dist[RoQ_ID_SLD] =
498  tempData->codebooks.numCB4, &cel->cbEntry, 8);
499 
500  gather_data_for_subcel(cel->subCels + 0, cel->sourceX+0, cel->sourceY+0, enc, tempData);
501  gather_data_for_subcel(cel->subCels + 1, cel->sourceX+4, cel->sourceY+0, enc, tempData);
502  gather_data_for_subcel(cel->subCels + 2, cel->sourceX+0, cel->sourceY+4, enc, tempData);
503  gather_data_for_subcel(cel->subCels + 3, cel->sourceX+4, cel->sourceY+4, enc, tempData);
504 
505  cel->eval_dist[RoQ_ID_CCC] = 0;
506  divide_bit_use = 0;
507  for (i=0; i<4; i++) {
508  cel->eval_dist[RoQ_ID_CCC] +=
509  cel->subCels[i].eval_dist[cel->subCels[i].best_coding];
510  divide_bit_use += cel->subCels[i].best_bit_use;
511  }
512 
513  best_dist = INT_MAX;
514  bitsUsed[3] = 2 + divide_bit_use;
515 
516  for (i=0; i<4; i++)
517  if (ROQ_LAMBDA_SCALE*cel->eval_dist[i] + enc->lambda*bitsUsed[i] <
518  best_dist) {
519  cel->best_coding = i;
520  best_dist = ROQ_LAMBDA_SCALE*cel->eval_dist[i] +
521  enc->lambda*bitsUsed[i];
522  }
523 
524  tempData->used_option[cel->best_coding]++;
525  tempData->mainChunkSize += bitsUsed[cel->best_coding];
526 
527  if (cel->best_coding == RoQ_ID_SLD)
528  tempData->codebooks.usedCB4[cel->cbEntry]++;
529 
530  if (cel->best_coding == RoQ_ID_CCC)
531  for (i=0; i<4; i++) {
532  if (cel->subCels[i].best_coding == RoQ_ID_SLD)
533  tempData->codebooks.usedCB4[cel->subCels[i].cbEntry]++;
534  else if (cel->subCels[i].best_coding == RoQ_ID_CCC)
535  for (j=0; j<4; j++)
536  tempData->codebooks.usedCB2[cel->subCels[i].subCels[j]]++;
537  }
538 }
539 
540 static void remap_codebooks(RoqContext *enc, RoqTempdata *tempData)
541 {
542  int i, j, idx=0;
543 
544  /* Make remaps for the final codebook usage */
545  for (i=0; i<(enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4); i++) {
546  if (tempData->codebooks.usedCB4[i]) {
547  tempData->i2f4[i] = idx;
548  tempData->f2i4[idx] = i;
549  for (j=0; j<4; j++)
550  tempData->codebooks.usedCB2[enc->cb4x4[i].idx[j]]++;
551  idx++;
552  }
553  }
554 
555  tempData->numCB4 = idx;
556 
557  idx = 0;
558  for (i=0; i<MAX_CBS_2x2; i++) {
559  if (tempData->codebooks.usedCB2[i]) {
560  tempData->i2f2[i] = idx;
561  tempData->f2i2[idx] = i;
562  idx++;
563  }
564  }
565  tempData->numCB2 = idx;
566 
567 }
568 
569 /**
570  * Write codebook chunk
571  */
572 static void write_codebooks(RoqContext *enc, RoqTempdata *tempData)
573 {
574  int i, j;
575  uint8_t **outp= &enc->out_buf;
576 
577  if (tempData->numCB2) {
578  bytestream_put_le16(outp, RoQ_QUAD_CODEBOOK);
579  bytestream_put_le32(outp, tempData->numCB2*6 + tempData->numCB4*4);
580  bytestream_put_byte(outp, tempData->numCB4);
581  bytestream_put_byte(outp, tempData->numCB2);
582 
583  for (i=0; i<tempData->numCB2; i++) {
584  bytestream_put_buffer(outp, enc->cb2x2[tempData->f2i2[i]].y, 4);
585  bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].u);
586  bytestream_put_byte(outp, enc->cb2x2[tempData->f2i2[i]].v);
587  }
588 
589  for (i=0; i<tempData->numCB4; i++)
590  for (j=0; j<4; j++)
591  bytestream_put_byte(outp, tempData->i2f2[enc->cb4x4[tempData->f2i4[i]].idx[j]]);
592 
593  }
594 }
595 
596 static inline uint8_t motion_arg(motion_vect mot)
597 {
598  uint8_t ax = 8 - ((uint8_t) mot.d[0]);
599  uint8_t ay = 8 - ((uint8_t) mot.d[1]);
600  return ((ax&15)<<4) | (ay&15);
601 }
602 
603 typedef struct CodingSpool {
609 } CodingSpool;
610 
611 /* NOTE: Typecodes must be spooled AFTER arguments!! */
613 {
614  s->typeSpool |= (type & 3) << (14 - s->typeSpoolLength);
615  s->typeSpoolLength += 2;
616  if (s->typeSpoolLength == 16) {
617  bytestream_put_le16(s->pout, s->typeSpool);
619  s->args - s->argumentSpool);
620  s->typeSpoolLength = 0;
621  s->typeSpool = 0;
622  s->args = s->argumentSpool;
623  }
624 }
625 
626 static void reconstruct_and_encode_image(RoqContext *enc, RoqTempdata *tempData, int w, int h, int numBlocks)
627 {
628  int i, j, k;
629  int x, y;
630  int subX, subY;
631  int dist=0;
632 
633  roq_qcell *qcell;
634  CelEvaluation *eval;
635 
636  CodingSpool spool;
637 
638  spool.typeSpool=0;
639  spool.typeSpoolLength=0;
640  spool.args = spool.argumentSpool;
641  spool.pout = &enc->out_buf;
642 
643  if (tempData->used_option[RoQ_ID_CCC]%2)
644  tempData->mainChunkSize+=8; //FIXME
645 
646  /* Write the video chunk header */
647  bytestream_put_le16(&enc->out_buf, RoQ_QUAD_VQ);
648  bytestream_put_le32(&enc->out_buf, tempData->mainChunkSize/8);
649  bytestream_put_byte(&enc->out_buf, 0x0);
650  bytestream_put_byte(&enc->out_buf, 0x0);
651 
652  for (i=0; i<numBlocks; i++) {
653  eval = tempData->cel_evals + i;
654 
655  x = eval->sourceX;
656  y = eval->sourceY;
657  dist += eval->eval_dist[eval->best_coding];
658 
659  switch (eval->best_coding) {
660  case RoQ_ID_MOT:
661  write_typecode(&spool, RoQ_ID_MOT);
662  break;
663 
664  case RoQ_ID_FCC:
665  bytestream_put_byte(&spool.args, motion_arg(eval->motion));
666 
667  write_typecode(&spool, RoQ_ID_FCC);
668  ff_apply_motion_8x8(enc, x, y,
669  eval->motion.d[0], eval->motion.d[1]);
670  break;
671 
672  case RoQ_ID_SLD:
673  bytestream_put_byte(&spool.args, tempData->i2f4[eval->cbEntry]);
674  write_typecode(&spool, RoQ_ID_SLD);
675 
676  qcell = enc->cb4x4 + eval->cbEntry;
677  ff_apply_vector_4x4(enc, x , y , enc->cb2x2 + qcell->idx[0]);
678  ff_apply_vector_4x4(enc, x+4, y , enc->cb2x2 + qcell->idx[1]);
679  ff_apply_vector_4x4(enc, x , y+4, enc->cb2x2 + qcell->idx[2]);
680  ff_apply_vector_4x4(enc, x+4, y+4, enc->cb2x2 + qcell->idx[3]);
681  break;
682 
683  case RoQ_ID_CCC:
684  write_typecode(&spool, RoQ_ID_CCC);
685 
686  for (j=0; j<4; j++) {
687  subX = x + 4*(j&1);
688  subY = y + 2*(j&2);
689 
690  switch(eval->subCels[j].best_coding) {
691  case RoQ_ID_MOT:
692  break;
693 
694  case RoQ_ID_FCC:
695  bytestream_put_byte(&spool.args,
696  motion_arg(eval->subCels[j].motion));
697 
698  ff_apply_motion_4x4(enc, subX, subY,
699  eval->subCels[j].motion.d[0],
700  eval->subCels[j].motion.d[1]);
701  break;
702 
703  case RoQ_ID_SLD:
704  bytestream_put_byte(&spool.args,
705  tempData->i2f4[eval->subCels[j].cbEntry]);
706 
707  qcell = enc->cb4x4 + eval->subCels[j].cbEntry;
708 
709  ff_apply_vector_2x2(enc, subX , subY ,
710  enc->cb2x2 + qcell->idx[0]);
711  ff_apply_vector_2x2(enc, subX+2, subY ,
712  enc->cb2x2 + qcell->idx[1]);
713  ff_apply_vector_2x2(enc, subX , subY+2,
714  enc->cb2x2 + qcell->idx[2]);
715  ff_apply_vector_2x2(enc, subX+2, subY+2,
716  enc->cb2x2 + qcell->idx[3]);
717  break;
718 
719  case RoQ_ID_CCC:
720  for (k=0; k<4; k++) {
721  int cb_idx = eval->subCels[j].subCels[k];
722  bytestream_put_byte(&spool.args,
723  tempData->i2f2[cb_idx]);
724 
725  ff_apply_vector_2x2(enc, subX + 2*(k&1), subY + (k&2),
726  enc->cb2x2 + cb_idx);
727  }
728  break;
729  }
730  write_typecode(&spool, eval->subCels[j].best_coding);
731  }
732  break;
733  }
734  }
735 
736  /* Flush the remainder of the argument/type spool */
737  while (spool.typeSpoolLength)
738  write_typecode(&spool, 0x0);
739 
740 #if 0
741  uint8_t *fdata[3] = {enc->frame_to_enc->data[0],
742  enc->frame_to_enc->data[1],
743  enc->frame_to_enc->data[2]};
744  uint8_t *cdata[3] = {enc->current_frame->data[0],
745  enc->current_frame->data[1],
746  enc->current_frame->data[2]};
747  av_log(enc->avctx, AV_LOG_ERROR, "Expected distortion: %i Actual: %i\n",
748  dist,
749  block_sse(fdata, cdata, 0, 0, 0, 0,
750  enc->frame_to_enc->linesize,
751  enc->current_frame->linesize,
752  enc->width)); //WARNING: Square dimensions implied...
753 #endif
754 }
755 
756 
757 /**
758  * Create a single YUV cell from a 2x2 section of the image
759  */
760 static inline void frame_block_to_cell(uint8_t *block, uint8_t * const *data,
761  int top, int left, const int *stride)
762 {
763  int i, j, u=0, v=0;
764 
765  for (i=0; i<2; i++)
766  for (j=0; j<2; j++) {
767  int x = (top+i)*stride[0] + left + j;
768  *block++ = data[0][x];
769  x = (top+i)*stride[1] + left + j;
770  u += data[1][x];
771  v += data[2][x];
772  }
773 
774  *block++ = (u+2)/4;
775  *block++ = (v+2)/4;
776 }
777 
778 /**
779  * Create YUV clusters for the entire image
780  */
781 static void create_clusters(const AVFrame *frame, int w, int h, uint8_t *yuvClusters)
782 {
783  int i, j, k, l;
784 
785  for (i=0; i<h; i+=4)
786  for (j=0; j<w; j+=4) {
787  for (k=0; k < 2; k++)
788  for (l=0; l < 2; l++)
789  frame_block_to_cell(yuvClusters + (l + 2*k)*6, frame->data,
790  i+2*k, j+2*l, frame->linesize);
791  yuvClusters += 24;
792  }
793 }
794 
795 static int generate_codebook(RoqContext *enc, RoqTempdata *tempdata,
796  int *points, int inputCount, roq_cell *results,
797  int size, int cbsize)
798 {
799  int i, j, k, ret = 0;
800  int c_size = size*size/4;
801  int *buf;
802  int *codebook = av_malloc_array(6*c_size, cbsize*sizeof(int));
803  int *closest_cb;
804 
805  if (!codebook)
806  return AVERROR(ENOMEM);
807 
808  if (size == 4) {
809  closest_cb = av_malloc_array(6*c_size, inputCount*sizeof(int));
810  if (!closest_cb) {
811  ret = AVERROR(ENOMEM);
812  goto out;
813  }
814  } else
815  closest_cb = tempdata->closest_cb2;
816 
817  ret = avpriv_init_elbg(points, 6 * c_size, inputCount, codebook,
818  cbsize, 1, closest_cb, &enc->randctx);
819  if (ret < 0)
820  goto out;
821  ret = avpriv_do_elbg(points, 6 * c_size, inputCount, codebook,
822  cbsize, 1, closest_cb, &enc->randctx);
823  if (ret < 0)
824  goto out;
825 
826  buf = codebook;
827  for (i=0; i<cbsize; i++)
828  for (k=0; k<c_size; k++) {
829  for(j=0; j<4; j++)
830  results->y[j] = *buf++;
831 
832  results->u = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
833  results->v = (*buf++ + CHROMA_BIAS/2)/CHROMA_BIAS;
834  results++;
835  }
836 out:
837  if (size == 4)
838  av_free(closest_cb);
839  av_free(codebook);
840  return ret;
841 }
842 
843 static int generate_new_codebooks(RoqContext *enc, RoqTempdata *tempData)
844 {
845  int i, j, ret = 0;
846  RoqCodebooks *codebooks = &tempData->codebooks;
847  int max = enc->width*enc->height/16;
848  uint8_t mb2[3*4];
849  roq_cell *results4 = av_malloc(sizeof(roq_cell)*MAX_CBS_4x4*4);
850  uint8_t *yuvClusters=av_malloc_array(max, sizeof(int)*6*4);
851  int *points = av_malloc_array(max, 6*4*sizeof(int));
852  int bias;
853 
854  if (!results4 || !yuvClusters || !points) {
855  ret = AVERROR(ENOMEM);
856  goto out;
857  }
858 
859  /* Subsample YUV data */
860  create_clusters(enc->frame_to_enc, enc->width, enc->height, yuvClusters);
861 
862  /* Cast to integer and apply chroma bias */
863  for (i=0; i<max*24; i++) {
864  bias = ((i%6)<4) ? 1 : CHROMA_BIAS;
865  points[i] = bias*yuvClusters[i];
866  }
867 
868  /* Create 4x4 codebooks */
869  if ((ret = generate_codebook(enc, tempData, points, max,
870  results4, 4, (enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4))) < 0)
871  goto out;
872 
873  codebooks->numCB4 = (enc->quake3_compat ? MAX_CBS_4x4-1 : MAX_CBS_4x4);
874 
875  tempData->closest_cb2 = av_malloc_array(max, 4*sizeof(int));
876  if (!tempData->closest_cb2) {
877  ret = AVERROR(ENOMEM);
878  goto out;
879  }
880 
881  /* Create 2x2 codebooks */
882  if ((ret = generate_codebook(enc, tempData, points, max * 4,
883  enc->cb2x2, 2, MAX_CBS_2x2)) < 0)
884  goto out;
885 
886  codebooks->numCB2 = MAX_CBS_2x2;
887 
888  /* Unpack 2x2 codebook clusters */
889  for (i=0; i<codebooks->numCB2; i++)
890  unpack_roq_cell(enc->cb2x2 + i, codebooks->unpacked_cb2 + i*2*2*3);
891 
892  /* Index all 4x4 entries to the 2x2 entries, unpack, and enlarge */
893  for (i=0; i<codebooks->numCB4; i++) {
894  for (j=0; j<4; j++) {
895  unpack_roq_cell(&results4[4*i + j], mb2);
896  index_mb(mb2, codebooks->unpacked_cb2, codebooks->numCB2,
897  &enc->cb4x4[i].idx[j], 2);
898  }
899  unpack_roq_qcell(codebooks->unpacked_cb2, enc->cb4x4 + i,
900  codebooks->unpacked_cb4 + i*4*4*3);
901  enlarge_roq_mb4(codebooks->unpacked_cb4 + i*4*4*3,
902  codebooks->unpacked_cb4_enlarged + i*8*8*3);
903  }
904 out:
905  av_free(yuvClusters);
906  av_free(points);
907  av_free(results4);
908  return ret;
909 }
910 
911 static int roq_encode_video(RoqContext *enc)
912 {
913  RoqTempdata *tempData = enc->tmpData;
914  int i, ret;
915 
916  memset(tempData, 0, sizeof(*tempData));
917 
918  ret = create_cel_evals(enc, tempData);
919  if (ret < 0)
920  return ret;
921 
922  ret = generate_new_codebooks(enc, tempData);
923  if (ret < 0)
924  return ret;
925 
926  if (enc->framesSinceKeyframe >= 1) {
927  motion_search(enc, 8);
928  motion_search(enc, 4);
929  }
930 
931  retry_encode:
932  for (i=0; i<enc->width*enc->height/64; i++)
933  gather_data_for_cel(tempData->cel_evals + i, enc, tempData);
934 
935  /* Quake 3 can't handle chunks bigger than 65535 bytes */
936  if (tempData->mainChunkSize/8 > 65535 && enc->quake3_compat) {
937  if (enc->lambda > 100000) {
938  av_log(enc->avctx, AV_LOG_ERROR, "Cannot encode video in Quake compatible form\n");
939  return AVERROR(EINVAL);
940  }
941  av_log(enc->avctx, AV_LOG_ERROR,
942  "Warning, generated a frame too big for Quake (%d > 65535), "
943  "now switching to a bigger qscale value.\n",
944  tempData->mainChunkSize/8);
945  enc->lambda *= 1.5;
946  tempData->mainChunkSize = 0;
947  memset(tempData->used_option, 0, sizeof(tempData->used_option));
948  memset(tempData->codebooks.usedCB4, 0,
949  sizeof(tempData->codebooks.usedCB4));
950  memset(tempData->codebooks.usedCB2, 0,
951  sizeof(tempData->codebooks.usedCB2));
952 
953  goto retry_encode;
954  }
955 
956  remap_codebooks(enc, tempData);
957 
958  write_codebooks(enc, tempData);
959 
960  reconstruct_and_encode_image(enc, tempData, enc->width, enc->height,
961  enc->width*enc->height/64);
962 
963  /* Rotate frame history */
964  FFSWAP(AVFrame *, enc->current_frame, enc->last_frame);
967 
968  av_freep(&tempData->cel_evals);
969  av_freep(&tempData->closest_cb2);
970 
971  enc->framesSinceKeyframe++;
972 
973  return 0;
974 }
975 
977 {
978  RoqContext *enc = avctx->priv_data;
979 
981  av_frame_free(&enc->last_frame);
982 
983  av_freep(&enc->tmpData);
984  av_freep(&enc->this_motion4);
985  av_freep(&enc->last_motion4);
986  av_freep(&enc->this_motion8);
987  av_freep(&enc->last_motion8);
988 
989  return 0;
990 }
991 
993 {
994  RoqContext *enc = avctx->priv_data;
995 
996  av_lfg_init(&enc->randctx, 1);
997 
998  enc->avctx = avctx;
999 
1000  enc->framesSinceKeyframe = 0;
1001  if ((avctx->width & 0xf) || (avctx->height & 0xf)) {
1002  av_log(avctx, AV_LOG_ERROR, "Dimensions must be divisible by 16\n");
1003  return AVERROR(EINVAL);
1004  }
1005 
1006  if (avctx->width > 65535 || avctx->height > 65535) {
1007  av_log(avctx, AV_LOG_ERROR, "Dimensions are max %d\n", enc->quake3_compat ? 32768 : 65535);
1008  return AVERROR(EINVAL);
1009  }
1010 
1011  if (((avctx->width)&(avctx->width-1))||((avctx->height)&(avctx->height-1)))
1012  av_log(avctx, AV_LOG_ERROR, "Warning: dimensions not power of two, this is not supported by quake\n");
1013 
1014  enc->width = avctx->width;
1015  enc->height = avctx->height;
1016 
1017  enc->framesSinceKeyframe = 0;
1018  enc->first_frame = 1;
1019 
1020  enc->last_frame = av_frame_alloc();
1021  enc->current_frame = av_frame_alloc();
1022  if (!enc->last_frame || !enc->current_frame) {
1023  roq_encode_end(avctx);
1024  return AVERROR(ENOMEM);
1025  }
1026 
1027  enc->tmpData = av_malloc(sizeof(RoqTempdata));
1028 
1029  enc->this_motion4 =
1030  av_mallocz_array((enc->width*enc->height/16), sizeof(motion_vect));
1031 
1032  enc->last_motion4 =
1033  av_malloc_array ((enc->width*enc->height/16), sizeof(motion_vect));
1034 
1035  enc->this_motion8 =
1036  av_mallocz_array((enc->width*enc->height/64), sizeof(motion_vect));
1037 
1038  enc->last_motion8 =
1039  av_malloc_array ((enc->width*enc->height/64), sizeof(motion_vect));
1040 
1041  if (!enc->tmpData || !enc->this_motion4 || !enc->last_motion4 ||
1042  !enc->this_motion8 || !enc->last_motion8) {
1043  roq_encode_end(avctx);
1044  return AVERROR(ENOMEM);
1045  }
1046 
1047  return 0;
1048 }
1049 
1051 {
1052  /* ROQ info chunk */
1053  bytestream_put_le16(&enc->out_buf, RoQ_INFO);
1054 
1055  /* Size: 8 bytes */
1056  bytestream_put_le32(&enc->out_buf, 8);
1057 
1058  /* Unused argument */
1059  bytestream_put_byte(&enc->out_buf, 0x00);
1060  bytestream_put_byte(&enc->out_buf, 0x00);
1061 
1062  /* Width */
1063  bytestream_put_le16(&enc->out_buf, enc->width);
1064 
1065  /* Height */
1066  bytestream_put_le16(&enc->out_buf, enc->height);
1067 
1068  /* Unused in Quake 3, mimics the output of the real encoder */
1069  bytestream_put_byte(&enc->out_buf, 0x08);
1070  bytestream_put_byte(&enc->out_buf, 0x00);
1071  bytestream_put_byte(&enc->out_buf, 0x04);
1072  bytestream_put_byte(&enc->out_buf, 0x00);
1073 }
1074 
1076  const AVFrame *frame, int *got_packet)
1077 {
1078  RoqContext *enc = avctx->priv_data;
1079  int size, ret;
1080 
1081  enc->avctx = avctx;
1082 
1083  enc->frame_to_enc = frame;
1084 
1085  if (frame->quality)
1086  enc->lambda = frame->quality - 1;
1087  else
1088  enc->lambda = 2*ROQ_LAMBDA_SCALE;
1089 
1090  /* 138 bits max per 8x8 block +
1091  * 256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
1092  size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8;
1093  if ((ret = ff_alloc_packet2(avctx, pkt, size, 0)) < 0)
1094  return ret;
1095  enc->out_buf = pkt->data;
1096 
1097  /* Check for I-frame */
1098  if (enc->framesSinceKeyframe == avctx->gop_size)
1099  enc->framesSinceKeyframe = 0;
1100 
1101  if (enc->first_frame) {
1102  /* Alloc memory for the reconstruction data (we must know the stride
1103  for that) */
1104  if ((ret = ff_get_buffer(avctx, enc->current_frame, 0)) < 0 ||
1105  (ret = ff_get_buffer(avctx, enc->last_frame, 0)) < 0)
1106  return ret;
1107 
1108  /* Before the first video frame, write a "video info" chunk */
1110 
1111  enc->first_frame = 0;
1112  }
1113 
1114  /* Encode the actual frame */
1115  ret = roq_encode_video(enc);
1116  if (ret < 0)
1117  return ret;
1118 
1119  pkt->size = enc->out_buf - pkt->data;
1120  if (enc->framesSinceKeyframe == 1)
1121  pkt->flags |= AV_PKT_FLAG_KEY;
1122  *got_packet = 1;
1123 
1124  return 0;
1125 }
1126 
1127 #define OFFSET(x) offsetof(RoqContext, x)
1128 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1129 static const AVOption options[] = {
1130  { "quake3_compat", "Whether to respect known limitations in Quake 3 decoder", OFFSET(quake3_compat), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE },
1131  { NULL },
1132 };
1133 
1134 static const AVClass roq_class = {
1135  .class_name = "RoQ",
1136  .item_name = av_default_item_name,
1137  .option = options,
1138  .version = LIBAVUTIL_VERSION_INT,
1139 };
1140 
1142  .name = "roqvideo",
1143  .long_name = NULL_IF_CONFIG_SMALL("id RoQ video"),
1144  .type = AVMEDIA_TYPE_VIDEO,
1145  .id = AV_CODEC_ID_ROQ,
1146  .priv_data_size = sizeof(RoqContext),
1147  .init = roq_encode_init,
1148  .encode2 = roq_encode_frame,
1149  .close = roq_encode_end,
1150  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUVJ444P,
1151  AV_PIX_FMT_NONE },
1152  .priv_class = &roq_class,
1153 };
SubcelEvaluation subCels[4]
Definition: roqvideoenc.c:201
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
int d[2]
Definition: roqvideo.h:39
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
motion_vect * this_motion4
Definition: roqvideo.h:62
const AVFrame * frame_to_enc
Definition: roqvideo.h:70
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define EVAL_MOTION(MOTION)
Definition: roqvideoenc.c:300
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int eval_motion_dist(RoqContext *enc, int x, int y, motion_vect vect, int size)
Definition: roqvideoenc.c:146
motion_vect motion
Definition: roqvideoenc.c:203
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:41
int size
Definition: avcodec.h:1601
const char * b
Definition: vf_curves.c:113
int f2i4[MAX_CBS_4x4]
Definition: roqvideoenc.c:226
static void remap_codebooks(RoqContext *enc, RoqTempdata *tempData)
Definition: roqvideoenc.c:540
#define RoQ_ID_FCC
Definition: roqvideo.h:85
static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
#define RoQ_INFO
Definition: roqvideo.h:78
AVCodec ff_roq_encoder
Definition: roqvideoenc.c:1141
static AVPacket pkt
motion_vect * this_motion8
Definition: roqvideo.h:65
AVFrame * current_frame
Definition: roqvideo.h:49
AVCodec.
Definition: avcodec.h:3599
static const AVOption options[]
Definition: roqvideoenc.c:1129
Macro definitions for various function/variable attributes.
motion_vect * last_motion4
Definition: roqvideo.h:63
#define MAX_CBS_4x4
Maximum number of generated 4x4 codebooks.
Definition: roqvideoenc.c:73
int width
Definition: roqvideo.h:56
#define RoQ_ID_MOT
Definition: roqvideo.h:84
AVLFG randctx
Definition: roqvideo.h:59
static int16_t block[64]
Definition: dct.c:113
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
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
static int create_cel_evals(RoqContext *enc, RoqTempdata *tempData)
Initialize cel evaluators and set their source coordinates.
Definition: roqvideoenc.c:245
static void gather_data_for_subcel(SubcelEvaluation *subcel, int x, int y, RoqContext *enc, RoqTempdata *tempData)
Get distortion for all options available to a subcel.
Definition: roqvideoenc.c:402
static void roq_write_video_info_chunk(RoqContext *enc)
Definition: roqvideoenc.c:1050
uint8_t
#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:141
#define mb
AVOptions.
#define RoQ_QUAD_CODEBOOK
Definition: roqvideo.h:79
RoqCodebooks codebooks
Definition: roqvideoenc.c:236
uint8_t * args
Definition: roqvideoenc.c:607
unsigned int framesSinceKeyframe
Definition: roqvideo.h:68
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 usedCB4[MAX_CBS_4x4]
Definition: roqvideoenc.c:213
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1600
#define VE
Definition: roqvideoenc.c:1128
uint8_t ** pout
Definition: roqvideoenc.c:608
ptrdiff_t size
Definition: opengl_enc.c:101
#define ROQ_LAMBDA_SCALE
Definition: roqvideoenc.c:78
uint8_t unpacked_cb2[MAX_CBS_2x2 *2 *2 *3]
Definition: roqvideoenc.c:214
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:133
#define av_log(a,...)
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:139
#define MAX_CBS_2x2
Maximum number of 2x2 codebooks.
Definition: roqvideoenc.c:75
int mainChunkSize
Definition: roqvideoenc.c:231
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1632
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define CHROMA_BIAS
Definition: roqvideoenc.c:67
static void unpack_roq_cell(roq_cell *cell, uint8_t u[4 *3])
Definition: roqvideoenc.c:81
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:154
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
roq_qcell cb4x4[256]
Definition: roqvideo.h:53
const char * name
Name of the codec implementation.
Definition: avcodec.h:3606
static int square(int x)
Definition: roqvideoenc.c:113
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
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:282
#define RoQ_ID_CCC
Definition: roqvideo.h:87
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
unsigned char u
Definition: roqvideo.h:31
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1606
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:130
static void frame_block_to_cell(uint8_t *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:760
static void write_codebooks(RoqContext *enc, RoqTempdata *tempData)
Write codebook chunk.
Definition: roqvideoenc.c:572
static void write_typecode(CodingSpool *s, uint8_t type)
Definition: roqvideoenc.c:612
static int squared_diff_macroblock(uint8_t a[], uint8_t b[], int size)
Definition: roqvideoenc.c:173
In the ELBG jargon, a cell is the set of points that are closest to a codebook entry.
Definition: elbg.c:39
int width
picture width / height.
Definition: avcodec.h:1862
struct RoqTempData * tmpData
Definition: roqvideo.h:72
int typeSpoolLength
Definition: roqvideoenc.c:605
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:294
int n
Definition: avisynth_c.h:684
static void motion_search(RoqContext *enc, int blocksize)
Definition: roqvideoenc.c:310
static uint8_t motion_arg(motion_vect mot)
Definition: roqvideoenc.c:596
static int roq_encode_video(RoqContext *enc)
Definition: roqvideoenc.c:911
int idx[4]
Definition: roqvideo.h:35
static av_cold int roq_encode_end(AVCodecContext *avctx)
Definition: roqvideoenc.c:976
int first_frame
Definition: roqvideo.h:50
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
Temporary vars.
Definition: roqvideoenc.c:222
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
int i2f2[MAX_CBS_2x2]
Definition: roqvideoenc.c:229
main external API structure.
Definition: avcodec.h:1675
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:937
#define RoQ_ID_SLD
Definition: roqvideo.h:86
#define OFFSET(x)
Definition: roqvideoenc.c:1127
unsigned char y[4]
Definition: roqvideo.h:30
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
static int eval_sse(const uint8_t *a, const uint8_t *b, int count)
Definition: roqvideoenc.c:118
uint64_t lambda
Definition: roqvideo.h:60
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
static int generate_new_codebooks(RoqContext *enc, RoqTempdata *tempData)
Definition: roqvideoenc.c:843
#define mid_pred
Definition: mathops.h:96
int dim
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
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:1710
#define u(width,...)
static void gather_data_for_cel(CelEvaluation *cel, RoqContext *enc, RoqTempdata *tempData)
Get distortion for all options available to a cel.
Definition: roqvideoenc.c:466
int used_option[4]
Definition: roqvideoenc.c:239
uint8_t argumentSpool[64]
Definition: roqvideoenc.c:606
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
static int roq_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
Definition: roqvideoenc.c:1075
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
static av_cold int roq_encode_init(AVCodecContext *avctx)
Definition: roqvideoenc.c:992
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1888
int quake3_compat
Definition: roqvideo.h:74
static int generate_codebook(RoqContext *enc, RoqTempdata *tempdata, int *points, int inputCount, roq_cell *results, int size, int cbsize)
Definition: roqvideoenc.c:795
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
CelEvaluation * cel_evals
Definition: roqvideoenc.c:224
AVCodecContext * avctx
Definition: roqvideo.h:47
uint8_t * out_buf
Definition: roqvideo.h:71
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
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:267
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
motion_vect * last_motion8
Definition: roqvideo.h:66
motion_vect motion
Definition: roqvideoenc.c:193
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:368
int i2f4[MAX_CBS_4x4]
Definition: roqvideoenc.c:227
#define RoQ_QUAD_VQ
Definition: roqvideo.h:80
void * priv_data
Definition: avcodec.h:1717
static av_always_inline int diff(const uint32_t a, const uint32_t b)
static void enlarge_roq_mb4(uint8_t base[3 *16], uint8_t u[3 *64])
Definition: roqvideoenc.c:103
#define av_free(p)
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:71
roq_cell cb2x2[256]
Definition: roqvideo.h:52
AVFrame * last_frame
Definition: roqvideo.h:48
static void create_clusters(const AVFrame *frame, int w, int h, uint8_t *yuvClusters)
Create YUV clusters for the entire image.
Definition: roqvideoenc.c:781
FILE * out
Definition: movenc.c:54
int usedCB2[MAX_CBS_2x2]
Definition: roqvideoenc.c:212
#define av_freep(p)
uint8_t unpacked_cb4[MAX_CBS_4x4 *4 *4 *3]
Definition: roqvideoenc.c:215
#define av_malloc_array(a, b)
static void unpack_roq_qcell(uint8_t cb2[], roq_qcell *qcell, uint8_t u[4 *4 *3])
Definition: roqvideoenc.c:88
#define FFSWAP(type, a, b)
Definition: common.h:99
int f2i2[MAX_CBS_2x2]
Definition: roqvideoenc.c:228
static const AVClass roq_class
Definition: roqvideoenc.c:1134
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1577
uint8_t unpacked_cb4_enlarged[MAX_CBS_4x4 *8 *8 *3]
Definition: roqvideoenc.c:216
unsigned char v
Definition: roqvideo.h:31
int eval_dist[4]
Definition: roqvideoenc.c:198
int * closest_cb2
Definition: roqvideoenc.c:238
int height
Definition: roqvideo.h:56
static void reconstruct_and_encode_image(RoqContext *enc, RoqTempdata *tempData, int w, int h, int numBlocks)
Definition: roqvideoenc.c:626