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vc1_mc.c
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1 /*
2  * VC-1 and WMV3 decoder
3  * Copyright (c) 2011 Mashiat Sarker Shakkhar
4  * Copyright (c) 2006-2007 Konstantin Shishkov
5  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 block decoding routines
27  */
28 
29 #include "avcodec.h"
30 #include "h264chroma.h"
31 #include "mathops.h"
32 #include "mpegvideo.h"
33 #include "vc1.h"
34 
36  int k, int linesize)
37 {
38  int i, j;
39  for (j = 0; j < k; j++) {
40  for (i = 0; i < k; i++)
41  srcY[i] = ((srcY[i] - 128) >> 1) + 128;
42  srcY += linesize;
43  }
44 }
45 
47  int k, int uvlinesize)
48 {
49  int i, j;
50  for (j = 0; j < k; j++) {
51  for (i = 0; i < k; i++) {
52  srcU[i] = ((srcU[i] - 128) >> 1) + 128;
53  srcV[i] = ((srcV[i] - 128) >> 1) + 128;
54  }
55  srcU += uvlinesize;
56  srcV += uvlinesize;
57  }
58 }
59 
61  uint8_t *lut1, uint8_t *lut2,
62  int k, int linesize)
63 {
64  int i, j;
65 
66  for (j = 0; j < k; j += 2) {
67  for (i = 0; i < k; i++)
68  srcY[i] = lut1[srcY[i]];
69  srcY += linesize;
70 
71  if (j + 1 == k)
72  break;
73 
74  for (i = 0; i < k; i++)
75  srcY[i] = lut2[srcY[i]];
76  srcY += linesize;
77  }
78 }
79 
81  uint8_t *lut1, uint8_t *lut2,
82  int k, int uvlinesize)
83 {
84  int i, j;
85 
86  for (j = 0; j < k; j += 2) {
87  for (i = 0; i < k; i++) {
88  srcU[i] = lut1[srcU[i]];
89  srcV[i] = lut1[srcV[i]];
90  }
91  srcU += uvlinesize;
92  srcV += uvlinesize;
93 
94  if (j + 1 == k)
95  break;
96 
97  for (i = 0; i < k; i++) {
98  srcU[i] = lut2[srcU[i]];
99  srcV[i] = lut2[srcV[i]];
100  }
101  srcU += uvlinesize;
102  srcV += uvlinesize;
103  }
104 }
105 
106 static const uint8_t popcount4[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
107 
108 static av_always_inline int get_luma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
109 {
110  MpegEncContext *s = &v->s;
111  int idx = v->mv_f[dir][s->block_index[0] + v->blocks_off] |
112  (v->mv_f[dir][s->block_index[1] + v->blocks_off] << 1) |
113  (v->mv_f[dir][s->block_index[2] + v->blocks_off] << 2) |
114  (v->mv_f[dir][s->block_index[3] + v->blocks_off] << 3);
115  static const uint8_t index2[16] = { 0, 0, 0, 0x23, 0, 0x13, 0x03, 0, 0, 0x12, 0x02, 0, 0x01, 0, 0, 0 };
116  int opp_count = popcount4[idx];
117 
118  switch (opp_count) {
119  case 0:
120  case 4:
121  *tx = median4(s->mv[dir][0][0], s->mv[dir][1][0], s->mv[dir][2][0], s->mv[dir][3][0]);
122  *ty = median4(s->mv[dir][0][1], s->mv[dir][1][1], s->mv[dir][2][1], s->mv[dir][3][1]);
123  break;
124  case 1:
125  *tx = mid_pred(s->mv[dir][idx < 2][0], s->mv[dir][1 + (idx < 4)][0], s->mv[dir][2 + (idx < 8)][0]);
126  *ty = mid_pred(s->mv[dir][idx < 2][1], s->mv[dir][1 + (idx < 4)][1], s->mv[dir][2 + (idx < 8)][1]);
127  break;
128  case 3:
129  *tx = mid_pred(s->mv[dir][idx > 0xd][0], s->mv[dir][1 + (idx > 0xb)][0], s->mv[dir][2 + (idx > 0x7)][0]);
130  *ty = mid_pred(s->mv[dir][idx > 0xd][1], s->mv[dir][1 + (idx > 0xb)][1], s->mv[dir][2 + (idx > 0x7)][1]);
131  break;
132  case 2:
133  *tx = (s->mv[dir][index2[idx] >> 4][0] + s->mv[dir][index2[idx] & 0xf][0]) / 2;
134  *ty = (s->mv[dir][index2[idx] >> 4][1] + s->mv[dir][index2[idx] & 0xf][1]) / 2;
135  break;
136  }
137  return opp_count;
138 }
139 
140 static av_always_inline int get_chroma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
141 {
142  MpegEncContext *s = &v->s;
143  int idx = !v->mb_type[0][s->block_index[0]] |
144  (!v->mb_type[0][s->block_index[1]] << 1) |
145  (!v->mb_type[0][s->block_index[2]] << 2) |
146  (!v->mb_type[0][s->block_index[3]] << 3);
147  static const uint8_t index2[16] = { 0, 0, 0, 0x01, 0, 0x02, 0x12, 0, 0, 0x03, 0x13, 0, 0x23, 0, 0, 0 };
148  int valid_count = popcount4[idx];
149 
150  switch (valid_count) {
151  case 4:
152  *tx = median4(s->mv[dir][0][0], s->mv[dir][1][0], s->mv[dir][2][0], s->mv[dir][3][0]);
153  *ty = median4(s->mv[dir][0][1], s->mv[dir][1][1], s->mv[dir][2][1], s->mv[dir][3][1]);
154  break;
155  case 3:
156  *tx = mid_pred(s->mv[dir][idx > 0xd][0], s->mv[dir][1 + (idx > 0xb)][0], s->mv[dir][2 + (idx > 0x7)][0]);
157  *ty = mid_pred(s->mv[dir][idx > 0xd][1], s->mv[dir][1 + (idx > 0xb)][1], s->mv[dir][2 + (idx > 0x7)][1]);
158  break;
159  case 2:
160  *tx = (s->mv[dir][index2[idx] >> 4][0] + s->mv[dir][index2[idx] & 0xf][0]) / 2;
161  *ty = (s->mv[dir][index2[idx] >> 4][1] + s->mv[dir][index2[idx] & 0xf][1]) / 2;
162  break;
163  default:
164  return 0;
165  }
166  return valid_count;
167 }
168 
169 /** Do motion compensation over 1 macroblock
170  * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
171  */
172 void ff_vc1_mc_1mv(VC1Context *v, int dir)
173 {
174  MpegEncContext *s = &v->s;
175  H264ChromaContext *h264chroma = &v->h264chroma;
176  uint8_t *srcY, *srcU, *srcV;
177  int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
178  int v_edge_pos = s->v_edge_pos >> v->field_mode;
179  int i;
180  uint8_t (*luty)[256], (*lutuv)[256];
181  int use_ic;
182 
183  if ((!v->field_mode ||
184  (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
185  !v->s.last_picture.f->data[0])
186  return;
187 
188  mx = s->mv[dir][0][0];
189  my = s->mv[dir][0][1];
190 
191  // store motion vectors for further use in B frames
192  if (s->pict_type == AV_PICTURE_TYPE_P) {
193  for (i = 0; i < 4; i++) {
194  s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
195  s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
196  }
197  }
198 
199  uvmx = (mx + ((mx & 3) == 3)) >> 1;
200  uvmy = (my + ((my & 3) == 3)) >> 1;
201  v->luma_mv[s->mb_x][0] = uvmx;
202  v->luma_mv[s->mb_x][1] = uvmy;
203 
204  if (v->field_mode &&
205  v->cur_field_type != v->ref_field_type[dir]) {
206  my = my - 2 + 4 * v->cur_field_type;
207  uvmy = uvmy - 2 + 4 * v->cur_field_type;
208  }
209 
210  // fastuvmc shall be ignored for interlaced frame picture
211  if (v->fastuvmc && (v->fcm != ILACE_FRAME)) {
212  uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
213  uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
214  }
215  if (!dir) {
216  if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
217  srcY = s->current_picture.f->data[0];
218  srcU = s->current_picture.f->data[1];
219  srcV = s->current_picture.f->data[2];
220  luty = v->curr_luty;
221  lutuv = v->curr_lutuv;
222  use_ic = *v->curr_use_ic;
223  } else {
224  srcY = s->last_picture.f->data[0];
225  srcU = s->last_picture.f->data[1];
226  srcV = s->last_picture.f->data[2];
227  luty = v->last_luty;
228  lutuv = v->last_lutuv;
229  use_ic = v->last_use_ic;
230  }
231  } else {
232  srcY = s->next_picture.f->data[0];
233  srcU = s->next_picture.f->data[1];
234  srcV = s->next_picture.f->data[2];
235  luty = v->next_luty;
236  lutuv = v->next_lutuv;
237  use_ic = v->next_use_ic;
238  }
239 
240  if (!srcY || !srcU) {
241  av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
242  return;
243  }
244 
245  src_x = s->mb_x * 16 + (mx >> 2);
246  src_y = s->mb_y * 16 + (my >> 2);
247  uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
248  uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
249 
250  if (v->profile != PROFILE_ADVANCED) {
251  src_x = av_clip( src_x, -16, s->mb_width * 16);
252  src_y = av_clip( src_y, -16, s->mb_height * 16);
253  uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
254  uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
255  } else {
256  src_x = av_clip( src_x, -17, s->avctx->coded_width);
257  src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
258  uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
259  uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
260  }
261 
262  srcY += src_y * s->linesize + src_x;
263  srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
264  srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
265 
266  if (v->field_mode && v->ref_field_type[dir]) {
267  srcY += s->current_picture_ptr->f->linesize[0];
268  srcU += s->current_picture_ptr->f->linesize[1];
269  srcV += s->current_picture_ptr->f->linesize[2];
270  }
271 
272  /* for grayscale we should not try to read from unknown area */
273  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
274  srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
275  srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
276  }
277 
278  if (v->rangeredfrm || use_ic
279  || s->h_edge_pos < 22 || v_edge_pos < 22
280  || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
281  || (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
282  uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
283  uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
284  const int k = 17 + s->mspel * 2;
285 
286  srcY -= s->mspel * (1 + s->linesize);
288  s->linesize, s->linesize,
289  k, k,
290  src_x - s->mspel, src_y - s->mspel,
291  s->h_edge_pos, v_edge_pos);
292  srcY = s->sc.edge_emu_buffer;
293  s->vdsp.emulated_edge_mc(ubuf, srcU,
294  s->uvlinesize, s->uvlinesize,
295  8 + 1, 8 + 1,
296  uvsrc_x, uvsrc_y,
297  s->h_edge_pos >> 1, v_edge_pos >> 1);
298  s->vdsp.emulated_edge_mc(vbuf, srcV,
299  s->uvlinesize, s->uvlinesize,
300  8 + 1, 8 + 1,
301  uvsrc_x, uvsrc_y,
302  s->h_edge_pos >> 1, v_edge_pos >> 1);
303  srcU = ubuf;
304  srcV = vbuf;
305  /* if we deal with range reduction we need to scale source blocks */
306  if (v->rangeredfrm) {
307  vc1_scale_luma(srcY, k, s->linesize);
308  vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
309  }
310  /* if we deal with intensity compensation we need to scale source blocks */
311  if (use_ic) {
312  vc1_lut_scale_luma(srcY,
313  luty[v->field_mode ? v->ref_field_type[dir] : ((0 + src_y - s->mspel) & 1)],
314  luty[v->field_mode ? v->ref_field_type[dir] : ((1 + src_y - s->mspel) & 1)],
315  k, s->linesize);
316  vc1_lut_scale_chroma(srcU, srcV,
317  lutuv[v->field_mode ? v->ref_field_type[dir] : ((0 + uvsrc_y) & 1)],
318  lutuv[v->field_mode ? v->ref_field_type[dir] : ((1 + uvsrc_y) & 1)],
319  9, s->uvlinesize);
320  }
321  srcY += s->mspel * (1 + s->linesize);
322  }
323 
324  if (s->mspel) {
325  dxy = ((my & 3) << 2) | (mx & 3);
326  v->vc1dsp.put_vc1_mspel_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, v->rnd);
327  } else { // hpel mc - always used for luma
328  dxy = (my & 2) | ((mx & 2) >> 1);
329  if (!v->rnd)
330  s->hdsp.put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
331  else
332  s->hdsp.put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
333  }
334 
335  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
336  return;
337  /* Chroma MC always uses qpel bilinear */
338  uvmx = (uvmx & 3) << 1;
339  uvmy = (uvmy & 3) << 1;
340  if (!v->rnd) {
341  h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
342  h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
343  } else {
344  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
345  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
346  }
347 }
348 
349 /** Do motion compensation for 4-MV macroblock - luminance block
350  */
351 void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
352 {
353  MpegEncContext *s = &v->s;
354  uint8_t *srcY;
355  int dxy, mx, my, src_x, src_y;
356  int off;
357  int fieldmv = (v->fcm == ILACE_FRAME) ? v->blk_mv_type[s->block_index[n]] : 0;
358  int v_edge_pos = s->v_edge_pos >> v->field_mode;
359  uint8_t (*luty)[256];
360  int use_ic;
361 
362  if ((!v->field_mode ||
363  (v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
364  !v->s.last_picture.f->data[0])
365  return;
366 
367  mx = s->mv[dir][n][0];
368  my = s->mv[dir][n][1];
369 
370  if (!dir) {
371  if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
372  srcY = s->current_picture.f->data[0];
373  luty = v->curr_luty;
374  use_ic = *v->curr_use_ic;
375  } else {
376  srcY = s->last_picture.f->data[0];
377  luty = v->last_luty;
378  use_ic = v->last_use_ic;
379  }
380  } else {
381  srcY = s->next_picture.f->data[0];
382  luty = v->next_luty;
383  use_ic = v->next_use_ic;
384  }
385 
386  if (!srcY) {
387  av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
388  return;
389  }
390 
391  if (v->field_mode) {
392  if (v->cur_field_type != v->ref_field_type[dir])
393  my = my - 2 + 4 * v->cur_field_type;
394  }
395 
396  if (s->pict_type == AV_PICTURE_TYPE_P && n == 3 && v->field_mode) {
397  int opp_count = get_luma_mv(v, 0,
398  &s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
399  &s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1]);
400  int k, f = opp_count > 2;
401  for (k = 0; k < 4; k++)
402  v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
403  }
404 
405  if (v->fcm == ILACE_FRAME) { // not sure if needed for other types of picture
406  int qx, qy;
407  int width = s->avctx->coded_width;
408  int height = s->avctx->coded_height >> 1;
409  if (s->pict_type == AV_PICTURE_TYPE_P) {
410  s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
411  s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
412  }
413  qx = (s->mb_x * 16) + (mx >> 2);
414  qy = (s->mb_y * 8) + (my >> 3);
415 
416  if (qx < -17)
417  mx -= 4 * (qx + 17);
418  else if (qx > width)
419  mx -= 4 * (qx - width);
420  if (qy < -18)
421  my -= 8 * (qy + 18);
422  else if (qy > height + 1)
423  my -= 8 * (qy - height - 1);
424  }
425 
426  if ((v->fcm == ILACE_FRAME) && fieldmv)
427  off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
428  else
429  off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
430 
431  src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
432  if (!fieldmv)
433  src_y = s->mb_y * 16 + (n & 2) * 4 + (my >> 2);
434  else
435  src_y = s->mb_y * 16 + ((n > 1) ? 1 : 0) + (my >> 2);
436 
437  if (v->profile != PROFILE_ADVANCED) {
438  src_x = av_clip(src_x, -16, s->mb_width * 16);
439  src_y = av_clip(src_y, -16, s->mb_height * 16);
440  } else {
441  src_x = av_clip(src_x, -17, s->avctx->coded_width);
442  if (v->fcm == ILACE_FRAME) {
443  if (src_y & 1)
444  src_y = av_clip(src_y, -17, s->avctx->coded_height + 1);
445  else
446  src_y = av_clip(src_y, -18, s->avctx->coded_height);
447  } else {
448  src_y = av_clip(src_y, -18, s->avctx->coded_height + 1);
449  }
450  }
451 
452  srcY += src_y * s->linesize + src_x;
453  if (v->field_mode && v->ref_field_type[dir])
454  srcY += s->current_picture_ptr->f->linesize[0];
455 
456  if (fieldmv) {
457  if (!(src_y & 1))
458  v_edge_pos--;
459  else
460  src_y -= (src_y < 4);
461  }
462  if (v->rangeredfrm || use_ic
463  || s->h_edge_pos < 13 || v_edge_pos < 23
464  || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx & 3) - 8 - s->mspel * 2
465  || (unsigned)(src_y - (s->mspel << fieldmv)) > v_edge_pos - (my & 3) - ((8 + s->mspel * 2) << fieldmv)) {
466  const int k = 9 + s->mspel * 2;
467 
468  srcY -= s->mspel * (1 + (s->linesize << fieldmv));
469  /* check emulate edge stride and offset */
471  s->linesize, s->linesize,
472  k, k << fieldmv,
473  src_x - s->mspel, src_y - (s->mspel << fieldmv),
474  s->h_edge_pos, v_edge_pos);
475  srcY = s->sc.edge_emu_buffer;
476  /* if we deal with range reduction we need to scale source blocks */
477  if (v->rangeredfrm) {
478  vc1_scale_luma(srcY, k, s->linesize << fieldmv);
479  }
480  /* if we deal with intensity compensation we need to scale source blocks */
481  if (use_ic) {
482  vc1_lut_scale_luma(srcY,
483  luty[v->field_mode ? v->ref_field_type[dir] : (((0<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1)],
484  luty[v->field_mode ? v->ref_field_type[dir] : (((1<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1)],
485  k, s->linesize << fieldmv);
486  }
487  srcY += s->mspel * (1 + (s->linesize << fieldmv));
488  }
489 
490  if (s->mspel) {
491  dxy = ((my & 3) << 2) | (mx & 3);
492  if (avg)
493  v->vc1dsp.avg_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
494  else
495  v->vc1dsp.put_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
496  } else { // hpel mc - always used for luma
497  dxy = (my & 2) | ((mx & 2) >> 1);
498  if (!v->rnd)
499  s->hdsp.put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
500  else
501  s->hdsp.put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
502  }
503 }
504 
505 /** Do motion compensation for 4-MV macroblock - both chroma blocks
506  */
508 {
509  MpegEncContext *s = &v->s;
510  H264ChromaContext *h264chroma = &v->h264chroma;
511  uint8_t *srcU, *srcV;
512  int uvmx, uvmy, uvsrc_x, uvsrc_y;
513  int16_t tx, ty;
514  int chroma_ref_type;
515  int v_edge_pos = s->v_edge_pos >> v->field_mode;
516  uint8_t (*lutuv)[256];
517  int use_ic;
518 
519  if (!v->field_mode && !v->s.last_picture.f->data[0])
520  return;
521  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
522  return;
523 
524  /* calculate chroma MV vector from four luma MVs */
525  if (!v->field_mode || !v->numref) {
526  int valid_count = get_chroma_mv(v, dir, &tx, &ty);
527  if (!valid_count) {
528  s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
529  s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
530  v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
531  return; //no need to do MC for intra blocks
532  }
533  chroma_ref_type = v->ref_field_type[dir];
534  } else {
535  int opp_count = get_luma_mv(v, dir, &tx, &ty);
536  chroma_ref_type = v->cur_field_type ^ (opp_count > 2);
537  }
538  if (v->field_mode && chroma_ref_type == 1 && v->cur_field_type == 1 && !v->s.last_picture.f->data[0])
539  return;
540  s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
541  s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
542  uvmx = (tx + ((tx & 3) == 3)) >> 1;
543  uvmy = (ty + ((ty & 3) == 3)) >> 1;
544 
545  v->luma_mv[s->mb_x][0] = uvmx;
546  v->luma_mv[s->mb_x][1] = uvmy;
547 
548  if (v->fastuvmc) {
549  uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
550  uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
551  }
552  // Field conversion bias
553  if (v->cur_field_type != chroma_ref_type)
554  uvmy += 2 - 4 * chroma_ref_type;
555 
556  uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
557  uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
558 
559  if (v->profile != PROFILE_ADVANCED) {
560  uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
561  uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
562  } else {
563  uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
564  uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
565  }
566 
567  if (!dir) {
568  if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
569  srcU = s->current_picture.f->data[1];
570  srcV = s->current_picture.f->data[2];
571  lutuv = v->curr_lutuv;
572  use_ic = *v->curr_use_ic;
573  } else {
574  srcU = s->last_picture.f->data[1];
575  srcV = s->last_picture.f->data[2];
576  lutuv = v->last_lutuv;
577  use_ic = v->last_use_ic;
578  }
579  } else {
580  srcU = s->next_picture.f->data[1];
581  srcV = s->next_picture.f->data[2];
582  lutuv = v->next_lutuv;
583  use_ic = v->next_use_ic;
584  }
585 
586  if (!srcU) {
587  av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
588  return;
589  }
590 
591  srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
592  srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
593 
594  if (v->field_mode) {
595  if (chroma_ref_type) {
596  srcU += s->current_picture_ptr->f->linesize[1];
597  srcV += s->current_picture_ptr->f->linesize[2];
598  }
599  }
600 
601  if (v->rangeredfrm || use_ic
602  || s->h_edge_pos < 18 || v_edge_pos < 18
603  || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
604  || (unsigned)uvsrc_y > (v_edge_pos >> 1) - 9) {
606  s->uvlinesize, s->uvlinesize,
607  8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
608  s->h_edge_pos >> 1, v_edge_pos >> 1);
609  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
610  s->uvlinesize, s->uvlinesize,
611  8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
612  s->h_edge_pos >> 1, v_edge_pos >> 1);
613  srcU = s->sc.edge_emu_buffer;
614  srcV = s->sc.edge_emu_buffer + 16;
615 
616  /* if we deal with range reduction we need to scale source blocks */
617  if (v->rangeredfrm) {
618  vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
619  }
620  /* if we deal with intensity compensation we need to scale source blocks */
621  if (use_ic) {
622  vc1_lut_scale_chroma(srcU, srcV,
623  lutuv[v->field_mode ? chroma_ref_type : ((0 + uvsrc_y) & 1)],
624  lutuv[v->field_mode ? chroma_ref_type : ((1 + uvsrc_y) & 1)],
625  9, s->uvlinesize);
626  }
627  }
628 
629  /* Chroma MC always uses qpel bilinear */
630  uvmx = (uvmx & 3) << 1;
631  uvmy = (uvmy & 3) << 1;
632  if (!v->rnd) {
633  h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
634  h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
635  } else {
636  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
637  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
638  }
639 }
640 
641 /** Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)
642  */
643 void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
644 {
645  MpegEncContext *s = &v->s;
646  H264ChromaContext *h264chroma = &v->h264chroma;
647  uint8_t *srcU, *srcV;
648  int uvsrc_x, uvsrc_y;
649  int uvmx_field[4], uvmy_field[4];
650  int i, off, tx, ty;
651  int fieldmv = v->blk_mv_type[s->block_index[0]];
652  static const uint8_t s_rndtblfield[16] = { 0, 0, 1, 2, 4, 4, 5, 6, 2, 2, 3, 8, 6, 6, 7, 12 };
653  int v_dist = fieldmv ? 1 : 4; // vertical offset for lower sub-blocks
654  int v_edge_pos = s->v_edge_pos >> 1;
655  int use_ic;
656  uint8_t (*lutuv)[256];
657 
658  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
659  return;
660 
661  for (i = 0; i < 4; i++) {
662  int d = i < 2 ? dir: dir2;
663  tx = s->mv[d][i][0];
664  uvmx_field[i] = (tx + ((tx & 3) == 3)) >> 1;
665  ty = s->mv[d][i][1];
666  if (fieldmv)
667  uvmy_field[i] = (ty >> 4) * 8 + s_rndtblfield[ty & 0xF];
668  else
669  uvmy_field[i] = (ty + ((ty & 3) == 3)) >> 1;
670  }
671 
672  for (i = 0; i < 4; i++) {
673  off = (i & 1) * 4 + ((i & 2) ? v_dist * s->uvlinesize : 0);
674  uvsrc_x = s->mb_x * 8 + (i & 1) * 4 + (uvmx_field[i] >> 2);
675  uvsrc_y = s->mb_y * 8 + ((i & 2) ? v_dist : 0) + (uvmy_field[i] >> 2);
676  // FIXME: implement proper pull-back (see vc1cropmv.c, vc1CROPMV_ChromaPullBack())
677  uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
678  uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
679  if (i < 2 ? dir : dir2) {
680  srcU = s->next_picture.f->data[1];
681  srcV = s->next_picture.f->data[2];
682  lutuv = v->next_lutuv;
683  use_ic = v->next_use_ic;
684  } else {
685  srcU = s->last_picture.f->data[1];
686  srcV = s->last_picture.f->data[2];
687  lutuv = v->last_lutuv;
688  use_ic = v->last_use_ic;
689  }
690  if (!srcU)
691  return;
692  srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
693  srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
694  uvmx_field[i] = (uvmx_field[i] & 3) << 1;
695  uvmy_field[i] = (uvmy_field[i] & 3) << 1;
696 
697  if (fieldmv) {
698  if (!(uvsrc_y & 1))
699  v_edge_pos = (s->v_edge_pos >> 1) - 1;
700  else
701  uvsrc_y -= (uvsrc_y < 2);
702  }
703  if (use_ic
704  || s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
705  || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
706  || (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
708  s->uvlinesize, s->uvlinesize,
709  5, (5 << fieldmv), uvsrc_x, uvsrc_y,
710  s->h_edge_pos >> 1, v_edge_pos);
711  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
712  s->uvlinesize, s->uvlinesize,
713  5, (5 << fieldmv), uvsrc_x, uvsrc_y,
714  s->h_edge_pos >> 1, v_edge_pos);
715  srcU = s->sc.edge_emu_buffer;
716  srcV = s->sc.edge_emu_buffer + 16;
717 
718  /* if we deal with intensity compensation we need to scale source blocks */
719  if (use_ic) {
720  vc1_lut_scale_chroma(srcU, srcV,
721  lutuv[(uvsrc_y + (0 << fieldmv)) & 1],
722  lutuv[(uvsrc_y + (1 << fieldmv)) & 1],
723  5, s->uvlinesize << fieldmv);
724  }
725  }
726  if (avg) {
727  if (!v->rnd) {
728  h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
729  h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
730  } else {
731  v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
732  v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
733  }
734  } else {
735  if (!v->rnd) {
736  h264chroma->put_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
737  h264chroma->put_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
738  } else {
739  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
740  v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
741  }
742  }
743  }
744 }
745 
746 /** Motion compensation for direct or interpolated blocks in B-frames
747  */
749 {
750  MpegEncContext *s = &v->s;
751  H264ChromaContext *h264chroma = &v->h264chroma;
752  uint8_t *srcY, *srcU, *srcV;
753  int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
754  int v_edge_pos = s->v_edge_pos >> v->field_mode;
755  int use_ic = v->next_use_ic;
756 
757  if (!v->field_mode && !v->s.next_picture.f->data[0])
758  return;
759 
760  mx = s->mv[1][0][0];
761  my = s->mv[1][0][1];
762  uvmx = (mx + ((mx & 3) == 3)) >> 1;
763  uvmy = (my + ((my & 3) == 3)) >> 1;
764  if (v->field_mode && v->cur_field_type != v->ref_field_type[1]) {
765  my = my - 2 + 4 * v->cur_field_type;
766  uvmy = uvmy - 2 + 4 * v->cur_field_type;
767  }
768  if (v->fastuvmc) {
769  uvmx = uvmx + ((uvmx < 0) ? -(uvmx & 1) : (uvmx & 1));
770  uvmy = uvmy + ((uvmy < 0) ? -(uvmy & 1) : (uvmy & 1));
771  }
772  srcY = s->next_picture.f->data[0];
773  srcU = s->next_picture.f->data[1];
774  srcV = s->next_picture.f->data[2];
775 
776  src_x = s->mb_x * 16 + (mx >> 2);
777  src_y = s->mb_y * 16 + (my >> 2);
778  uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
779  uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
780 
781  if (v->profile != PROFILE_ADVANCED) {
782  src_x = av_clip( src_x, -16, s->mb_width * 16);
783  src_y = av_clip( src_y, -16, s->mb_height * 16);
784  uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
785  uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
786  } else {
787  src_x = av_clip( src_x, -17, s->avctx->coded_width);
788  src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
789  uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
790  uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
791  }
792 
793  srcY += src_y * s->linesize + src_x;
794  srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
795  srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
796 
797  if (v->field_mode && v->ref_field_type[1]) {
798  srcY += s->current_picture_ptr->f->linesize[0];
799  srcU += s->current_picture_ptr->f->linesize[1];
800  srcV += s->current_picture_ptr->f->linesize[2];
801  }
802 
803  /* for grayscale we should not try to read from unknown area */
804  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
805  srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
806  srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
807  }
808 
809  if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
810  || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
811  || (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
812  uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
813  uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
814  const int k = 17 + s->mspel * 2;
815 
816  srcY -= s->mspel * (1 + s->linesize);
818  s->linesize, s->linesize,
819  k, k,
820  src_x - s->mspel, src_y - s->mspel,
821  s->h_edge_pos, v_edge_pos);
822  srcY = s->sc.edge_emu_buffer;
823  s->vdsp.emulated_edge_mc(ubuf, srcU,
824  s->uvlinesize, s->uvlinesize,
825  8 + 1, 8 + 1,
826  uvsrc_x, uvsrc_y,
827  s->h_edge_pos >> 1, v_edge_pos >> 1);
828  s->vdsp.emulated_edge_mc(vbuf, srcV,
829  s->uvlinesize, s->uvlinesize,
830  8 + 1, 8 + 1,
831  uvsrc_x, uvsrc_y,
832  s->h_edge_pos >> 1, v_edge_pos >> 1);
833  srcU = ubuf;
834  srcV = vbuf;
835  /* if we deal with range reduction we need to scale source blocks */
836  if (v->rangeredfrm) {
837  vc1_scale_luma(srcY, k, s->linesize);
838  vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
839  }
840 
841  if (use_ic) {
842  uint8_t (*luty )[256] = v->next_luty;
843  uint8_t (*lutuv)[256] = v->next_lutuv;
844  vc1_lut_scale_luma(srcY,
845  luty[v->field_mode ? v->ref_field_type[1] : ((0+src_y - s->mspel) & 1)],
846  luty[v->field_mode ? v->ref_field_type[1] : ((1+src_y - s->mspel) & 1)],
847  k, s->linesize);
848  vc1_lut_scale_chroma(srcU, srcV,
849  lutuv[v->field_mode ? v->ref_field_type[1] : ((0+uvsrc_y) & 1)],
850  lutuv[v->field_mode ? v->ref_field_type[1] : ((1+uvsrc_y) & 1)],
851  9, s->uvlinesize);
852  }
853  srcY += s->mspel * (1 + s->linesize);
854  }
855 
856  if (s->mspel) {
857  dxy = ((my & 3) << 2) | (mx & 3);
858  v->vc1dsp.avg_vc1_mspel_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, v->rnd);
859  } else { // hpel mc
860  dxy = (my & 2) | ((mx & 2) >> 1);
861 
862  if (!v->rnd)
863  s->hdsp.avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
864  else
865  s->hdsp.avg_no_rnd_pixels_tab[dxy](s->dest[0], srcY, s->linesize, 16);
866  }
867 
868  if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
869  return;
870  /* Chroma MC always uses qpel blilinear */
871  uvmx = (uvmx & 3) << 1;
872  uvmy = (uvmy & 3) << 1;
873  if (!v->rnd) {
874  h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
875  h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
876  } else {
877  v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
878  v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
879  }
880 }
float v
const char * s
Definition: avisynth_c.h:631
The VC1 Context.
Definition: vc1.h:173
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegvideo.h:141
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1424
op_pixels_func avg_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:68
static av_always_inline void vc1_lut_scale_luma(uint8_t *srcY, uint8_t *lut1, uint8_t *lut2, int k, int linesize)
Definition: vc1_mc.c:60
int v_edge_pos
horizontal / vertical position of the right/bottom edge (pixel replication)
Definition: mpegvideo.h:201
h264_chroma_mc_func put_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:27
int next_use_ic
Definition: vc1.h:297
uint8_t rangeredfrm
Frame decoding info for S/M profiles only.
Definition: vc1.h:302
mpegvideo header.
uint8_t * mv_f[2]
0: MV obtained from same field, 1: opposite field
Definition: vc1.h:350
int last_use_ic
Definition: vc1.h:297
int fastuvmc
Rounding of qpel vector to hpel ? (not in Simple)
Definition: vc1.h:222
vc1op_pixels_func put_vc1_mspel_pixels_tab[2][16]
Definition: vc1dsp.h:60
static const uint8_t popcount4[16]
Definition: vc1_mc.c:106
static av_always_inline void vc1_scale_luma(uint8_t *srcY, int k, int linesize)
Definition: vc1_mc.c:35
void(* emulated_edge_mc)(uint8_t *dst, const uint8_t *src, ptrdiff_t dst_linesize, ptrdiff_t src_linesize, int block_w, int block_h, int src_x, int src_y, int w, int h)
Copy a rectangular area of samples to a temporary buffer and replicate the border samples...
Definition: videodsp.h:63
ScratchpadContext sc
Definition: mpegvideo.h:271
uint8_t
int second_field
Definition: vc1.h:354
void ff_vc1_interp_mc(VC1Context *v)
Motion compensation for direct or interpolated blocks in B-frames.
Definition: vc1_mc.c:748
static av_always_inline int get_luma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
Definition: vc1_mc.c:108
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:249
int16_t((* luma_mv)[2]
Definition: vc1.h:388
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:218
void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
Do motion compensation for 4-MV macroblock - luminance block.
Definition: vc1_mc.c:351
uint8_t last_luty[2][256]
Definition: vc1.h:293
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:198
#define av_log(a,...)
uint8_t last_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:293
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define median4
Definition: mathops.h:125
int flags
CODEC_FLAG_*.
Definition: avcodec.h:1335
Libavcodec external API header.
uint8_t * blk_mv_type
0: frame MV, 1: field MV (interlaced frame)
Definition: vc1.h:349
int cur_field_type
0: top, 1: bottom
Definition: vc1.h:362
int * curr_use_ic
Definition: vc1.h:297
int field_mode
1 for interlaced field pictures
Definition: vc1.h:352
int16_t(*[2] motion_val)[2]
Definition: mpegvideo.h:97
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:253
static av_always_inline int get_chroma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
Definition: vc1_mc.c:140
int n
Definition: avisynth_c.h:547
int block_index[6]
index to current MB in block based arrays with edges
Definition: mpegvideo.h:360
h264_chroma_mc_func avg_no_rnd_vc1_chroma_pixels_tab[3]
Definition: vc1dsp.h:65
ptrdiff_t linesize
line size, in bytes, may be different from width
Definition: mpegvideo.h:203
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
static av_always_inline void vc1_scale_chroma(uint8_t *srcU, uint8_t *srcV, int k, int uvlinesize)
Definition: vc1_mc.c:46
op_pixels_func put_pixels_tab[4][4]
Halfpel motion compensation with rounding (a+b+1)>>1.
Definition: hpeldsp.h:56
vc1op_pixels_func avg_vc1_mspel_pixels_tab[2][16]
Definition: vc1dsp.h:61
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
int coded_height
Definition: avcodec.h:1424
op_pixels_func put_no_rnd_pixels_tab[4][4]
Halfpel motion compensation with no rounding (a+b)>>1.
Definition: hpeldsp.h:80
struct AVFrame * f
Definition: mpegvideo.h:90
void ff_vc1_mc_1mv(VC1Context *v, int dir)
Do motion compensation over 1 macroblock Mostly adapted hpel_motion and qpel_motion from mpegvideo...
Definition: vc1_mc.c:172
void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V) ...
Definition: vc1_mc.c:643
#define mid_pred
Definition: mathops.h:96
ptrdiff_t uvlinesize
line size, for chroma in bytes, may be different from width
Definition: mpegvideo.h:204
uint8_t next_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:295
int ref_field_type[2]
forward and backward reference field type (top or bottom)
Definition: vc1.h:363
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:281
int numref
number of past field pictures used as reference
Definition: vc1.h:356
int blocks_off
Definition: vc1.h:364
h264_chroma_mc_func put_no_rnd_vc1_chroma_pixels_tab[3]
Definition: vc1dsp.h:64
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
int mv[2][4][2]
motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend...
Definition: mpegvideo.h:343
MpegEncContext s
Definition: vc1.h:174
in the bitstream is reported as 10b
Definition: vc1.h:150
MpegEncContext.
Definition: mpegvideo.h:150
struct AVCodecContext * avctx
Definition: mpegvideo.h:167
#define CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:738
uint8_t * dest[3]
Definition: mpegvideo.h:362
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:308
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:231
uint8_t next_luty[2][256]
Definition: vc1.h:295
h264_chroma_mc_func avg_h264_chroma_pixels_tab[4]
Definition: h264chroma.h:28
int rnd
rounding control
Definition: vc1.h:298
VideoDSPContext vdsp
Definition: mpegvideo.h:305
static av_always_inline void vc1_lut_scale_chroma(uint8_t *srcU, uint8_t *srcV, uint8_t *lut1, uint8_t *lut2, int k, int uvlinesize)
Definition: vc1_mc.c:80
op_pixels_func avg_no_rnd_pixels_tab[4]
Halfpel motion compensation with no rounding (a+b)>>1.
Definition: hpeldsp.h:92
uint8_t(* curr_luty)[256]
Definition: vc1.h:296
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:237
H264ChromaContext h264chroma
Definition: vc1.h:176
void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
Do motion compensation for 4-MV macroblock - both chroma blocks.
Definition: vc1_mc.c:507
#define av_always_inline
Definition: attributes.h:37
uint8_t * mb_type[3]
Definition: vc1.h:264
VC1DSPContext vc1dsp
Definition: vc1.h:177
Predicted.
Definition: avutil.h:268
uint8_t((* curr_lutuv)[256]
Definition: vc1.h:296
HpelDSPContext hdsp
Definition: mpegvideo.h:298
static int width