Libav
svq1enc.c
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1 /*
2  * SVQ1 Encoder
3  * Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
29 #include "avcodec.h"
30 #include "hpeldsp.h"
31 #include "me_cmp.h"
32 #include "mpegvideo.h"
33 #include "h263.h"
34 #include "internal.h"
35 #include "mpegutils.h"
36 #include "svq1.h"
37 #include "svq1enc.h"
38 #include "svq1enc_cb.h"
39 
40 #undef NDEBUG
41 #include <assert.h>
42 
43 static void svq1_write_header(SVQ1EncContext *s, int frame_type)
44 {
45  int i;
46 
47  /* frame code */
48  put_bits(&s->pb, 22, 0x20);
49 
50  /* temporal reference (sure hope this is a "don't care") */
51  put_bits(&s->pb, 8, 0x00);
52 
53  /* frame type */
54  put_bits(&s->pb, 2, frame_type - 1);
55 
56  if (frame_type == AV_PICTURE_TYPE_I) {
57  /* no checksum since frame code is 0x20 */
58  /* no embedded string either */
59  /* output 5 unknown bits (2 + 2 + 1) */
60  put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
61 
64  s->frame_width, s->frame_height);
65  put_bits(&s->pb, 3, i);
66 
67  if (i == 7) {
68  put_bits(&s->pb, 12, s->frame_width);
69  put_bits(&s->pb, 12, s->frame_height);
70  }
71  }
72 
73  /* no checksum or extra data (next 2 bits get 0) */
74  put_bits(&s->pb, 2, 0);
75 }
76 
77 #define QUALITY_THRESHOLD 100
78 #define THRESHOLD_MULTIPLIER 0.6
79 
80 static int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2,
81  int size)
82 {
83  int score = 0, i;
84 
85  for (i = 0; i < size; i++)
86  score += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]);
87  return score;
88 }
89 
90 static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref,
91  uint8_t *decoded, int stride, int level,
92  int threshold, int lambda, int intra)
93 {
94  int count, y, x, i, j, split, best_mean, best_score, best_count;
95  int best_vector[6];
96  int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
97  int w = 2 << (level + 2 >> 1);
98  int h = 2 << (level + 1 >> 1);
99  int size = w * h;
100  int16_t block[7][256];
101  const int8_t *codebook_sum, *codebook;
102  const uint16_t(*mean_vlc)[2];
103  const uint8_t(*multistage_vlc)[2];
104 
105  best_score = 0;
106  // FIXME: Optimize, this does not need to be done multiple times.
107  if (intra) {
108  codebook_sum = svq1_intra_codebook_sum[level];
109  codebook = ff_svq1_intra_codebooks[level];
110  mean_vlc = ff_svq1_intra_mean_vlc;
111  multistage_vlc = ff_svq1_intra_multistage_vlc[level];
112  for (y = 0; y < h; y++) {
113  for (x = 0; x < w; x++) {
114  int v = src[x + y * stride];
115  block[0][x + w * y] = v;
116  best_score += v * v;
117  block_sum[0] += v;
118  }
119  }
120  } else {
121  codebook_sum = svq1_inter_codebook_sum[level];
122  codebook = ff_svq1_inter_codebooks[level];
123  mean_vlc = ff_svq1_inter_mean_vlc + 256;
124  multistage_vlc = ff_svq1_inter_multistage_vlc[level];
125  for (y = 0; y < h; y++) {
126  for (x = 0; x < w; x++) {
127  int v = src[x + y * stride] - ref[x + y * stride];
128  block[0][x + w * y] = v;
129  best_score += v * v;
130  block_sum[0] += v;
131  }
132  }
133  }
134 
135  best_count = 0;
136  best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
137  best_mean = block_sum[0] + (size >> 1) >> (level + 3);
138 
139  if (level < 4) {
140  for (count = 1; count < 7; count++) {
141  int best_vector_score = INT_MAX;
142  int best_vector_sum = -999, best_vector_mean = -999;
143  const int stage = count - 1;
144  const int8_t *vector;
145 
146  for (i = 0; i < 16; i++) {
147  int sum = codebook_sum[stage * 16 + i];
148  int sqr, diff, score;
149 
150  vector = codebook + stage * size * 16 + i * size;
151  sqr = s->ssd_int8_vs_int16(vector, block[stage], size);
152  diff = block_sum[stage] - sum;
153  score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64bit slooow
154  if (score < best_vector_score) {
155  int mean = diff + (size >> 1) >> (level + 3);
156  assert(mean > -300 && mean < 300);
157  mean = av_clip(mean, intra ? 0 : -256, 255);
158  best_vector_score = score;
159  best_vector[stage] = i;
160  best_vector_sum = sum;
161  best_vector_mean = mean;
162  }
163  }
164  assert(best_vector_mean != -999);
165  vector = codebook + stage * size * 16 + best_vector[stage] * size;
166  for (j = 0; j < size; j++)
167  block[stage + 1][j] = block[stage][j] - vector[j];
168  block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
169  best_vector_score += lambda *
170  (+1 + 4 * count +
171  multistage_vlc[1 + count][1]
172  + mean_vlc[best_vector_mean][1]);
173 
174  if (best_vector_score < best_score) {
175  best_score = best_vector_score;
176  best_count = count;
177  best_mean = best_vector_mean;
178  }
179  }
180  }
181 
182  split = 0;
183  if (best_score > threshold && level) {
184  int score = 0;
185  int offset = level & 1 ? stride * h / 2 : w / 2;
186  PutBitContext backup[6];
187 
188  for (i = level - 1; i >= 0; i--)
189  backup[i] = s->reorder_pb[i];
190  score += encode_block(s, src, ref, decoded, stride, level - 1,
191  threshold >> 1, lambda, intra);
192  score += encode_block(s, src + offset, ref + offset, decoded + offset,
193  stride, level - 1, threshold >> 1, lambda, intra);
194  score += lambda;
195 
196  if (score < best_score) {
197  best_score = score;
198  split = 1;
199  } else {
200  for (i = level - 1; i >= 0; i--)
201  s->reorder_pb[i] = backup[i];
202  }
203  }
204  if (level > 0)
205  put_bits(&s->reorder_pb[level], 1, split);
206 
207  if (!split) {
208  assert(best_mean >= 0 && best_mean < 256 || !intra);
209  assert(best_mean >= -256 && best_mean < 256);
210  assert(best_count >= 0 && best_count < 7);
211  assert(level < 4 || best_count == 0);
212 
213  /* output the encoding */
214  put_bits(&s->reorder_pb[level],
215  multistage_vlc[1 + best_count][1],
216  multistage_vlc[1 + best_count][0]);
217  put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
218  mean_vlc[best_mean][0]);
219 
220  for (i = 0; i < best_count; i++) {
221  assert(best_vector[i] >= 0 && best_vector[i] < 16);
222  put_bits(&s->reorder_pb[level], 4, best_vector[i]);
223  }
224 
225  for (y = 0; y < h; y++)
226  for (x = 0; x < w; x++)
227  decoded[x + y * stride] = src[x + y * stride] -
228  block[best_count][x + w * y] +
229  best_mean;
230  }
231 
232  return best_score;
233 }
234 
235 static int svq1_encode_plane(SVQ1EncContext *s, int plane,
236  unsigned char *src_plane,
237  unsigned char *ref_plane,
238  unsigned char *decoded_plane,
239  int width, int height, int src_stride, int stride)
240 {
241  const AVFrame *f = s->avctx->coded_frame;
242  int x, y;
243  int i;
244  int block_width, block_height;
245  int level;
246  int threshold[6];
247  uint8_t *src = s->scratchbuf + stride * 16;
248  const int lambda = (f->quality * f->quality) >>
249  (2 * FF_LAMBDA_SHIFT);
250 
251  /* figure out the acceptable level thresholds in advance */
252  threshold[5] = QUALITY_THRESHOLD;
253  for (level = 4; level >= 0; level--)
254  threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
255 
256  block_width = (width + 15) / 16;
257  block_height = (height + 15) / 16;
258 
259  if (f->pict_type == AV_PICTURE_TYPE_P) {
260  s->m.avctx = s->avctx;
262  s->m.last_picture_ptr = &s->m.last_picture;
263  s->m.last_picture.f->data[0] = ref_plane;
264  s->m.linesize =
265  s->m.last_picture.f->linesize[0] =
266  s->m.new_picture.f->linesize[0] =
267  s->m.current_picture.f->linesize[0] = stride;
268  s->m.width = width;
269  s->m.height = height;
270  s->m.mb_width = block_width;
271  s->m.mb_height = block_height;
272  s->m.mb_stride = s->m.mb_width + 1;
273  s->m.b8_stride = 2 * s->m.mb_width + 1;
274  s->m.f_code = 1;
275  s->m.pict_type = f->pict_type;
276  s->m.me_method = s->avctx->me_method;
277  s->m.me.scene_change_score = 0;
278  s->m.flags = s->avctx->flags;
279  // s->m.out_format = FMT_H263;
280  // s->m.unrestricted_mv = 1;
281  s->m.lambda = f->quality;
282  s->m.qscale = s->m.lambda * 139 +
283  FF_LAMBDA_SCALE * 64 >>
284  FF_LAMBDA_SHIFT + 7;
285  s->m.lambda2 = s->m.lambda * s->m.lambda +
286  FF_LAMBDA_SCALE / 2 >>
288 
289  if (!s->motion_val8[plane]) {
290  s->motion_val8[plane] = av_mallocz((s->m.b8_stride *
291  block_height * 2 + 2) *
292  2 * sizeof(int16_t));
293  s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
294  (block_height + 2) + 1) *
295  2 * sizeof(int16_t));
296  }
297 
298  s->m.mb_type = s->mb_type;
299 
300  // dummies, to avoid segfaults
302  s->m.current_picture.mb_var = (uint16_t *)s->dummy;
303  s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
304  s->m.current_picture.mb_type = s->dummy;
305 
306  s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;
307  s->m.p_mv_table = s->motion_val16[plane] +
308  s->m.mb_stride + 1;
309  s->m.mecc = s->mecc; // move
310  ff_init_me(&s->m);
311 
312  s->m.me.dia_size = s->avctx->dia_size;
313  s->m.first_slice_line = 1;
314  for (y = 0; y < block_height; y++) {
315  s->m.new_picture.f->data[0] = src - y * 16 * stride; // ugly
316  s->m.mb_y = y;
317 
318  for (i = 0; i < 16 && i + 16 * y < height; i++) {
319  memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
320  width);
321  for (x = width; x < 16 * block_width; x++)
322  src[i * stride + x] = src[i * stride + x - 1];
323  }
324  for (; i < 16 && i + 16 * y < 16 * block_height; i++)
325  memcpy(&src[i * stride], &src[(i - 1) * stride],
326  16 * block_width);
327 
328  for (x = 0; x < block_width; x++) {
329  s->m.mb_x = x;
330  ff_init_block_index(&s->m);
332 
333  ff_estimate_p_frame_motion(&s->m, x, y);
334  }
335  s->m.first_slice_line = 0;
336  }
337 
338  ff_fix_long_p_mvs(&s->m);
339  ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
341  }
342 
343  s->m.first_slice_line = 1;
344  for (y = 0; y < block_height; y++) {
345  for (i = 0; i < 16 && i + 16 * y < height; i++) {
346  memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
347  width);
348  for (x = width; x < 16 * block_width; x++)
349  src[i * stride + x] = src[i * stride + x - 1];
350  }
351  for (; i < 16 && i + 16 * y < 16 * block_height; i++)
352  memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
353 
354  s->m.mb_y = y;
355  for (x = 0; x < block_width; x++) {
356  uint8_t reorder_buffer[3][6][7 * 32];
357  int count[3][6];
358  int offset = y * 16 * stride + x * 16;
359  uint8_t *decoded = decoded_plane + offset;
360  uint8_t *ref = ref_plane + offset;
361  int score[4] = { 0, 0, 0, 0 }, best;
362  uint8_t *temp = s->scratchbuf;
363 
364  if (s->pb.buf_end - s->pb.buf -
365  (put_bits_count(&s->pb) >> 3) < 3000) { // FIXME: check size
366  av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
367  return -1;
368  }
369 
370  s->m.mb_x = x;
371  ff_init_block_index(&s->m);
373 
374  if (f->pict_type == AV_PICTURE_TYPE_I ||
375  (s->m.mb_type[x + y * s->m.mb_stride] &
377  for (i = 0; i < 6; i++)
378  init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
379  7 * 32);
380  if (f->pict_type == AV_PICTURE_TYPE_P) {
382  put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
383  score[0] = vlc[1] * lambda;
384  }
385  score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
386  5, 64, lambda, 1);
387  for (i = 0; i < 6; i++) {
388  count[0][i] = put_bits_count(&s->reorder_pb[i]);
389  flush_put_bits(&s->reorder_pb[i]);
390  }
391  } else
392  score[0] = INT_MAX;
393 
394  best = 0;
395 
396  if (f->pict_type == AV_PICTURE_TYPE_P) {
398  int mx, my, pred_x, pred_y, dxy;
399  int16_t *motion_ptr;
400 
401  motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
402  if (s->m.mb_type[x + y * s->m.mb_stride] &
404  for (i = 0; i < 6; i++)
405  init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
406  7 * 32);
407 
408  put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
409 
410  s->m.pb = s->reorder_pb[5];
411  mx = motion_ptr[0];
412  my = motion_ptr[1];
413  assert(mx >= -32 && mx <= 31);
414  assert(my >= -32 && my <= 31);
415  assert(pred_x >= -32 && pred_x <= 31);
416  assert(pred_y >= -32 && pred_y <= 31);
417  ff_h263_encode_motion(&s->m, mx - pred_x, 1);
418  ff_h263_encode_motion(&s->m, my - pred_y, 1);
419  s->reorder_pb[5] = s->m.pb;
420  score[1] += lambda * put_bits_count(&s->reorder_pb[5]);
421 
422  dxy = (mx & 1) + 2 * (my & 1);
423 
424  s->hdsp.put_pixels_tab[0][dxy](temp + 16,
425  ref + (mx >> 1) +
426  stride * (my >> 1),
427  stride, 16);
428 
429  score[1] += encode_block(s, src + 16 * x, temp + 16,
430  decoded, stride, 5, 64, lambda, 0);
431  best = score[1] <= score[0];
432 
434  score[2] = s->mecc.sse[0](NULL, src + 16 * x, ref,
435  stride, 16);
436  score[2] += vlc[1] * lambda;
437  if (score[2] < score[best] && mx == 0 && my == 0) {
438  best = 2;
439  s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
440  for (i = 0; i < 6; i++)
441  count[2][i] = 0;
442  put_bits(&s->pb, vlc[1], vlc[0]);
443  }
444  }
445 
446  if (best == 1) {
447  for (i = 0; i < 6; i++) {
448  count[1][i] = put_bits_count(&s->reorder_pb[i]);
449  flush_put_bits(&s->reorder_pb[i]);
450  }
451  } else {
452  motion_ptr[0] =
453  motion_ptr[1] =
454  motion_ptr[2] =
455  motion_ptr[3] =
456  motion_ptr[0 + 2 * s->m.b8_stride] =
457  motion_ptr[1 + 2 * s->m.b8_stride] =
458  motion_ptr[2 + 2 * s->m.b8_stride] =
459  motion_ptr[3 + 2 * s->m.b8_stride] = 0;
460  }
461  }
462 
463  s->rd_total += score[best];
464 
465  for (i = 5; i >= 0; i--)
466  avpriv_copy_bits(&s->pb, reorder_buffer[best][i],
467  count[best][i]);
468  if (best == 0)
469  s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
470  }
471  s->m.first_slice_line = 0;
472  }
473  return 0;
474 }
475 
477 {
478  SVQ1EncContext *const s = avctx->priv_data;
479  int i;
480 
481  av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
482  s->rd_total / (double)(avctx->width * avctx->height *
483  avctx->frame_number));
484 
485  s->m.mb_type = NULL;
486  ff_mpv_common_end(&s->m);
487 
488  av_freep(&s->m.me.scratchpad);
489  av_freep(&s->m.me.map);
490  av_freep(&s->m.me.score_map);
491  av_freep(&s->mb_type);
492  av_freep(&s->dummy);
493  av_freep(&s->scratchbuf);
494 
495  for (i = 0; i < 3; i++) {
496  av_freep(&s->motion_val8[i]);
497  av_freep(&s->motion_val16[i]);
498  }
499 
502  av_frame_free(&avctx->coded_frame);
503 
504  return 0;
505 }
506 
508 {
509  SVQ1EncContext *const s = avctx->priv_data;
510  int ret;
511 
512  ff_hpeldsp_init(&s->hdsp, avctx->flags);
513  ff_me_cmp_init(&s->mecc, avctx);
514  ff_mpegvideoencdsp_init(&s->m.mpvencdsp, avctx);
515 
516  avctx->coded_frame = av_frame_alloc();
519  if (!avctx->coded_frame || !s->current_picture || !s->last_picture) {
520  svq1_encode_end(avctx);
521  return AVERROR(ENOMEM);
522  }
523 
524  s->frame_width = avctx->width;
525  s->frame_height = avctx->height;
526 
527  s->y_block_width = (s->frame_width + 15) / 16;
528  s->y_block_height = (s->frame_height + 15) / 16;
529 
530  s->c_block_width = (s->frame_width / 4 + 15) / 16;
531  s->c_block_height = (s->frame_height / 4 + 15) / 16;
532 
533  s->avctx = avctx;
534  s->m.avctx = avctx;
535 
536  if ((ret = ff_mpv_common_init(&s->m)) < 0) {
537  svq1_encode_end(avctx);
538  return ret;
539  }
540 
542  s->m.me.temp =
543  s->m.me.scratchpad = av_mallocz((avctx->width + 64) *
544  2 * 16 * 2 * sizeof(uint8_t));
545  s->m.me.map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
546  s->m.me.score_map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
547  s->mb_type = av_mallocz((s->y_block_width + 1) *
548  s->y_block_height * sizeof(int16_t));
549  s->dummy = av_mallocz((s->y_block_width + 1) *
550  s->y_block_height * sizeof(int32_t));
552 
553  if (ARCH_PPC)
555  if (ARCH_X86)
557 
558  ff_h263_encode_init(&s->m); // mv_penalty
559 
560  return 0;
561 }
562 
563 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
564  const AVFrame *pict, int *got_packet)
565 {
566  SVQ1EncContext *const s = avctx->priv_data;
567  AVFrame *const p = avctx->coded_frame;
568  int i, ret;
569 
570  if (!pkt->data &&
571  (ret = av_new_packet(pkt, s->y_block_width * s->y_block_height *
572  MAX_MB_BYTES * 3 + FF_MIN_BUFFER_SIZE)) < 0) {
573  av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
574  return ret;
575  }
576 
577  if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
578  av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
579  return -1;
580  }
581 
582  if (!s->current_picture->data[0]) {
583  ret = ff_get_buffer(avctx, s->current_picture, 0);
584  if (ret < 0)
585  return ret;
586  ret = ff_get_buffer(avctx, s->last_picture, 0);
587  if (ret < 0)
588  return ret;
589  s->scratchbuf = av_malloc(s->current_picture->linesize[0] * 16 * 2);
590  }
591 
593 
594  init_put_bits(&s->pb, pkt->data, pkt->size);
595 
596  p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?
599  p->quality = pict->quality;
600 
602  for (i = 0; i < 3; i++)
603  if (svq1_encode_plane(s, i,
604  pict->data[i],
605  s->last_picture->data[i],
606  s->current_picture->data[i],
607  s->frame_width / (i ? 4 : 1),
608  s->frame_height / (i ? 4 : 1),
609  pict->linesize[i],
610  s->current_picture->linesize[i]) < 0)
611  return -1;
612 
613  // avpriv_align_put_bits(&s->pb);
614  while (put_bits_count(&s->pb) & 31)
615  put_bits(&s->pb, 1, 0);
616 
617  flush_put_bits(&s->pb);
618 
619  pkt->size = put_bits_count(&s->pb) / 8;
620  if (p->pict_type == AV_PICTURE_TYPE_I)
621  pkt->flags |= AV_PKT_FLAG_KEY;
622  *got_packet = 1;
623 
624  return 0;
625 }
626 
628  .name = "svq1",
629  .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
630  .type = AVMEDIA_TYPE_VIDEO,
631  .id = AV_CODEC_ID_SVQ1,
632  .priv_data_size = sizeof(SVQ1EncContext),
634  .encode2 = svq1_encode_frame,
636  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
637  AV_PIX_FMT_NONE },
638 };
uint8_t * scratchpad
data area for the ME algo, so that the ME does not need to malloc/free
Definition: mpegvideo.h:153
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp.c:893
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:62
void ff_init_block_index(MpegEncContext *s)
Definition: mpegvideo.c:2368
int size
This structure describes decoded (raw) audio or video data.
Definition: frame.h:135
uint16_t * mb_type
Definition: svq1enc.h:62
int16_t(* p_mv_table)[2]
MV table (1MV per MB) p-frame encoding.
Definition: mpegvideo.h:372
void ff_estimate_p_frame_motion(MpegEncContext *s, int mb_x, int mb_y)
Definition: motion_est.c:859
uint8_t * mb_mean
Table for MB luminance.
Definition: mpegvideo.h:125
#define THRESHOLD_MULTIPLIER
Definition: svq1enc.c:78
int frame_height
Definition: svq1enc.h:52
MpegEncContext m
Definition: svq1enc.h:38
void ff_h263_encode_init(MpegEncContext *s)
Definition: ituh263enc.c:768
AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2548
uint16_t * mb_var
Table for MB variances.
Definition: mpegvideo.h:119
AVFrame * current_picture
Definition: svq1enc.h:42
int size
Definition: avcodec.h:974
void avpriv_copy_bits(PutBitContext *pb, const uint8_t *src, int length)
Copy the content of src to the bitstream.
Definition: bitstream.c:61
#define ARCH_X86
Definition: config.h:33
static int svq1_encode_plane(SVQ1EncContext *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane, int width, int height, int src_stride, int stride)
Definition: svq1enc.c:235
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1270
int c_block_height
Definition: svq1enc.h:60
uint32_t * score_map
map to store the scores
Definition: mpegvideo.h:159
mpegvideo header.
#define FF_ARRAY_ELEMS(a)
int scene_change_score
Definition: mpegvideo.h:187
#define SVQ1_BLOCK_INTRA
Definition: svq1.h:43
#define FF_LAMBDA_SHIFT
Definition: avutil.h:205
int stride
Definition: mace.c:144
AVCodec.
Definition: avcodec.h:2812
int qscale
QP.
Definition: mpegvideo.h:332
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
Definition: h263.c:313
svq1 code books.
static const int8_t svq1_intra_codebook_sum[4][16 *6]
Definition: svq1enc_cb.h:59
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:198
const uint16_t ff_svq1_frame_size_table[7][2]
Definition: svq1.c:40
#define SVQ1_BLOCK_SKIP
Definition: svq1.h:40
#define CANDIDATE_MB_TYPE_INTER
Definition: mpegutils.h:101
static av_cold int svq1_encode_init(AVCodecContext *avctx)
Definition: svq1enc.c:507
int y_block_height
Definition: svq1enc.h:56
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
uint8_t
#define av_cold
Definition: attributes.h:66
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:57
int frame_width
Definition: svq1enc.h:51
const int8_t *const ff_svq1_inter_codebooks[6]
Definition: svq1_cb.h:776
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:306
uint8_t * data
Definition: avcodec.h:973
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:255
int(* ssd_int8_vs_int16)(const int8_t *pix1, const int16_t *pix2, int size)
Definition: svq1enc.h:71
static void ff_update_block_index(MpegEncContext *s)
Definition: mpegvideo.h:756
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1019
int c_block_width
Definition: svq1enc.h:59
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:81
int64_t rd_total
Definition: svq1enc.h:67
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
static int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2, int size)
Definition: svq1enc.c:80
#define AVERROR(e)
Definition: error.h:43
uint8_t * scratchbuf
Definition: svq1enc.h:69
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:69
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:145
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:144
int y_block_width
Definition: svq1enc.h:55
int flags
CODEC_FLAG_*.
Definition: avcodec.h:1144
uint8_t * buf
Definition: put_bits.h:38
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
MpegvideoEncDSPContext mpvencdsp
Definition: mpegvideo.h:357
const char * name
Name of the codec implementation.
Definition: avcodec.h:2819
int16_t(*[3] motion_val16)[2]
Definition: svq1enc.h:65
uint16_t * mb_type
Table for candidate MB types for encoding (defines in mpegutils.h)
Definition: mpegvideo.h:413
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
Definition: put_bits.h:134
#define SVQ1_BLOCK_INTER
Definition: svq1.h:41
void ff_mpv_common_end(MpegEncContext *s)
Definition: mpegvideo.c:1478
static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra)
Definition: svq1enc.c:90
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:979
Sorenson Vector Quantizer #1 (SVQ1) video codec.
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:67
static char * split(char *message, char delim)
Definition: af_channelmap.c:85
av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
Definition: hpeldsp.c:338
void ff_h263_encode_motion(MpegEncContext *s, int val, int f_code)
Definition: ituh263enc.c:653
PutBitContext reorder_pb[6]
Definition: svq1enc.h:49
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:196
#define FF_MIN_BUFFER_SIZE
minimum encoding buffer size Used to avoid some checks during header writing.
Definition: avcodec.h:538
#define MAX_MB_BYTES
Definition: mpegvideo.h:74
int me_method
ME algorithm.
Definition: mpegvideo.h:382
Picture new_picture
copy of the source picture structure for encoding.
Definition: mpegvideo.h:300
const uint8_t ff_svq1_block_type_vlc[4][2]
Definition: svq1_vlc.h:27
int width
picture width / height.
Definition: avcodec.h:1229
int16_t(*[2] motion_val)[2]
Definition: mpegvideo.h:107
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:310
MECmpContext mecc
Definition: svq1enc.h:40
int32_t
AVCodec ff_svq1_encoder
Definition: svq1enc.c:627
int quality
quality (between 1 (good) and FF_LAMBDA_MAX (bad))
Definition: frame.h:235
MotionEstContext me
Definition: mpegvideo.h:404
#define ME_MAP_SIZE
Definition: mpegvideo.h:72
const uint8_t ff_svq1_inter_multistage_vlc[6][8][2]
Definition: svq1_vlc.h:50
static av_cold int svq1_encode_end(AVCodecContext *avctx)
Definition: svq1enc.c:476
PutBitContext pb
Definition: svq1enc.h:44
int first_slice_line
used in mpeg4 too to handle resync markers
Definition: mpegvideo.h:546
NULL
Definition: eval.c:55
uint16_t * mc_mb_var
Table for motion compensated MB variances.
Definition: mpegvideo.h:122
int16_t(*[3] motion_val8)[2]
Definition: svq1enc.h:64
Half-pel DSP functions.
static int width
Definition: utils.c:156
#define FF_LAMBDA_SCALE
Definition: avutil.h:206
unsigned int lambda2
(lambda*lambda) >> FF_LAMBDA_SHIFT
Definition: mpegvideo.h:335
Libavcodec external API header.
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:260
static void svq1_write_header(SVQ1EncContext *s, int frame_type)
Definition: svq1enc.c:43
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:153
av_cold void ff_svq1enc_init_ppc(SVQ1EncContext *c)
main external API structure.
Definition: avcodec.h:1050
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:490
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:223
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:612
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:56
uint8_t * buf_end
Definition: put_bits.h:38
av_cold void ff_svq1enc_init_x86(SVQ1EncContext *c)
Definition: svq1enc.c:64
void ff_fix_long_p_mvs(MpegEncContext *s)
Definition: motion_est.c:1664
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:71
struct AVFrame * f
Definition: mpegvideo.h:100
int f_code
forward MV resolution
Definition: mpegvideo.h:362
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:339
#define ARCH_PPC
Definition: config.h:24
AVFrame * last_picture
Definition: svq1enc.h:43
int ff_init_me(MpegEncContext *s)
Definition: motion_est.c:301
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:141
uint8_t level
Definition: svq3.c:147
int b8_stride
2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
Definition: mpegvideo.h:257
me_cmp_func sse[6]
Definition: me_cmp.h:42
int height
Definition: gxfenc.c:72
struct AVCodecContext * avctx
Definition: mpegvideo.h:221
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
Definition: avcodec.h:1255
PutBitContext pb
bit output
Definition: mpegvideo.h:277
MECmpContext mecc
Definition: mpegvideo.h:355
const int8_t *const ff_svq1_intra_codebooks[6]
Definition: svq1_cb.h:1519
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:256
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:83
AVCodecContext * avctx
Definition: svq1enc.h:39
const uint8_t ff_svq1_intra_multistage_vlc[6][8][2]
Definition: svq1_vlc.h:33
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:288
Picture * last_picture_ptr
pointer to the previous picture.
Definition: mpegvideo.h:308
static const int8_t svq1_inter_codebook_sum[4][16 *6]
Definition: svq1enc_cb.h:32
const uint16_t ff_svq1_inter_mean_vlc[512][2]
Definition: svq1_vlc.h:136
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:48
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:499
uint32_t * map
map to avoid duplicate evaluations
Definition: mpegvideo.h:158
#define CANDIDATE_MB_TYPE_INTRA
Definition: mpegutils.h:100
void * priv_data
Definition: avcodec.h:1092
#define PICT_FRAME
Definition: mpegutils.h:35
av_cold int ff_mpv_common_init(MpegEncContext *s)
init common structure for both encoder and decoder.
Definition: mpegvideo.c:1235
int picture_structure
Definition: mpegvideo.h:570
int dia_size
ME diamond size & shape.
Definition: avcodec.h:1491
uint32_t * dummy
Definition: svq1enc.h:63
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:191
void ff_fix_long_mvs(MpegEncContext *s, uint8_t *field_select_table, int field_select, int16_t(*mv_table)[2], int f_code, int type, int truncate)
Definition: motion_est.c:1714
static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: svq1enc.c:563
HpelDSPContext hdsp
Definition: svq1enc.h:41
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1838
int flags
AVCodecContext.flags (HQ, MV4, ...)
Definition: mpegvideo.h:238
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegvideo.h:110
uint8_t * temp
Definition: mpegvideo.h:156
#define FFSWAP(type, a, b)
Definition: common.h:60
#define QUALITY_THRESHOLD
Definition: svq1enc.c:77
int me_method
Motion estimation algorithm used for video coding.
Definition: avcodec.h:1279
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
This structure stores compressed data.
Definition: avcodec.h:950
const uint16_t ff_svq1_intra_mean_vlc[256][2]
Definition: svq1_vlc.h:67
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:205
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
Definition: utils.c:2230
Predicted.
Definition: avutil.h:254
unsigned int lambda
lagrange multipler used in rate distortion
Definition: mpegvideo.h:334
static int16_t block[64]
Definition: dct-test.c:88