media/libvpx/vp8/common/reconinter.c@6474c204b198
media/libvpx/vp8/common/reconinter.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
12 #include <limits.h>
13 #include "vpx_config.h"
14 #include "vp8_rtcd.h"
15 #include "vpx/vpx_integer.h"
16 #include "blockd.h"
17 #include "reconinter.h"
18 #if CONFIG_RUNTIME_CPU_DETECT
19 #include "onyxc_int.h"
20 #endif
22 void vp8_copy_mem16x16_c(
23 unsigned char *src,
24 int src_stride,
25 unsigned char *dst,
26 int dst_stride)
27 {
29 int r;
31 for (r = 0; r < 16; r++)
32 {
33 #if !(CONFIG_FAST_UNALIGNED)
34 dst[0] = src[0];
35 dst[1] = src[1];
36 dst[2] = src[2];
37 dst[3] = src[3];
38 dst[4] = src[4];
39 dst[5] = src[5];
40 dst[6] = src[6];
41 dst[7] = src[7];
42 dst[8] = src[8];
43 dst[9] = src[9];
44 dst[10] = src[10];
45 dst[11] = src[11];
46 dst[12] = src[12];
47 dst[13] = src[13];
48 dst[14] = src[14];
49 dst[15] = src[15];
51 #else
52 ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ;
53 ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ;
54 ((uint32_t *)dst)[2] = ((uint32_t *)src)[2] ;
55 ((uint32_t *)dst)[3] = ((uint32_t *)src)[3] ;
57 #endif
58 src += src_stride;
59 dst += dst_stride;
61 }
63 }
65 void vp8_copy_mem8x8_c(
66 unsigned char *src,
67 int src_stride,
68 unsigned char *dst,
69 int dst_stride)
70 {
71 int r;
73 for (r = 0; r < 8; r++)
74 {
75 #if !(CONFIG_FAST_UNALIGNED)
76 dst[0] = src[0];
77 dst[1] = src[1];
78 dst[2] = src[2];
79 dst[3] = src[3];
80 dst[4] = src[4];
81 dst[5] = src[5];
82 dst[6] = src[6];
83 dst[7] = src[7];
84 #else
85 ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ;
86 ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ;
87 #endif
88 src += src_stride;
89 dst += dst_stride;
91 }
93 }
95 void vp8_copy_mem8x4_c(
96 unsigned char *src,
97 int src_stride,
98 unsigned char *dst,
99 int dst_stride)
100 {
101 int r;
103 for (r = 0; r < 4; r++)
104 {
105 #if !(CONFIG_FAST_UNALIGNED)
106 dst[0] = src[0];
107 dst[1] = src[1];
108 dst[2] = src[2];
109 dst[3] = src[3];
110 dst[4] = src[4];
111 dst[5] = src[5];
112 dst[6] = src[6];
113 dst[7] = src[7];
114 #else
115 ((uint32_t *)dst)[0] = ((uint32_t *)src)[0] ;
116 ((uint32_t *)dst)[1] = ((uint32_t *)src)[1] ;
117 #endif
118 src += src_stride;
119 dst += dst_stride;
121 }
123 }
126 void vp8_build_inter_predictors_b(BLOCKD *d, int pitch, unsigned char *base_pre, int pre_stride, vp8_subpix_fn_t sppf)
127 {
128 int r;
129 unsigned char *pred_ptr = d->predictor;
130 unsigned char *ptr;
131 ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3);
133 if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7)
134 {
135 sppf(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, pred_ptr, pitch);
136 }
137 else
138 {
139 for (r = 0; r < 4; r++)
140 {
141 pred_ptr[0] = ptr[0];
142 pred_ptr[1] = ptr[1];
143 pred_ptr[2] = ptr[2];
144 pred_ptr[3] = ptr[3];
145 pred_ptr += pitch;
146 ptr += pre_stride;
147 }
148 }
149 }
151 static void build_inter_predictors4b(MACROBLOCKD *x, BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride)
152 {
153 unsigned char *ptr;
154 ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3);
156 if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7)
157 {
158 x->subpixel_predict8x8(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride);
159 }
160 else
161 {
162 vp8_copy_mem8x8(ptr, pre_stride, dst, dst_stride);
163 }
164 }
166 static void build_inter_predictors2b(MACROBLOCKD *x, BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride)
167 {
168 unsigned char *ptr;
169 ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3);
171 if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7)
172 {
173 x->subpixel_predict8x4(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride);
174 }
175 else
176 {
177 vp8_copy_mem8x4(ptr, pre_stride, dst, dst_stride);
178 }
179 }
181 static void build_inter_predictors_b(BLOCKD *d, unsigned char *dst, int dst_stride, unsigned char *base_pre, int pre_stride, vp8_subpix_fn_t sppf)
182 {
183 int r;
184 unsigned char *ptr;
185 ptr = base_pre + d->offset + (d->bmi.mv.as_mv.row >> 3) * pre_stride + (d->bmi.mv.as_mv.col >> 3);
187 if (d->bmi.mv.as_mv.row & 7 || d->bmi.mv.as_mv.col & 7)
188 {
189 sppf(ptr, pre_stride, d->bmi.mv.as_mv.col & 7, d->bmi.mv.as_mv.row & 7, dst, dst_stride);
190 }
191 else
192 {
193 for (r = 0; r < 4; r++)
194 {
195 dst[0] = ptr[0];
196 dst[1] = ptr[1];
197 dst[2] = ptr[2];
198 dst[3] = ptr[3];
199 dst += dst_stride;
200 ptr += pre_stride;
201 }
202 }
203 }
206 /*encoder only*/
207 void vp8_build_inter16x16_predictors_mbuv(MACROBLOCKD *x)
208 {
209 unsigned char *uptr, *vptr;
210 unsigned char *upred_ptr = &x->predictor[256];
211 unsigned char *vpred_ptr = &x->predictor[320];
213 int mv_row = x->mode_info_context->mbmi.mv.as_mv.row;
214 int mv_col = x->mode_info_context->mbmi.mv.as_mv.col;
215 int offset;
216 int pre_stride = x->pre.uv_stride;
218 /* calc uv motion vectors */
219 mv_row += 1 | (mv_row >> (sizeof(int) * CHAR_BIT - 1));
220 mv_col += 1 | (mv_col >> (sizeof(int) * CHAR_BIT - 1));
221 mv_row /= 2;
222 mv_col /= 2;
223 mv_row &= x->fullpixel_mask;
224 mv_col &= x->fullpixel_mask;
226 offset = (mv_row >> 3) * pre_stride + (mv_col >> 3);
227 uptr = x->pre.u_buffer + offset;
228 vptr = x->pre.v_buffer + offset;
230 if ((mv_row | mv_col) & 7)
231 {
232 x->subpixel_predict8x8(uptr, pre_stride, mv_col & 7, mv_row & 7, upred_ptr, 8);
233 x->subpixel_predict8x8(vptr, pre_stride, mv_col & 7, mv_row & 7, vpred_ptr, 8);
234 }
235 else
236 {
237 vp8_copy_mem8x8(uptr, pre_stride, upred_ptr, 8);
238 vp8_copy_mem8x8(vptr, pre_stride, vpred_ptr, 8);
239 }
240 }
242 /*encoder only*/
243 void vp8_build_inter4x4_predictors_mbuv(MACROBLOCKD *x)
244 {
245 int i, j;
246 int pre_stride = x->pre.uv_stride;
247 unsigned char *base_pre;
249 /* build uv mvs */
250 for (i = 0; i < 2; i++)
251 {
252 for (j = 0; j < 2; j++)
253 {
254 int yoffset = i * 8 + j * 2;
255 int uoffset = 16 + i * 2 + j;
256 int voffset = 20 + i * 2 + j;
258 int temp;
260 temp = x->block[yoffset ].bmi.mv.as_mv.row
261 + x->block[yoffset+1].bmi.mv.as_mv.row
262 + x->block[yoffset+4].bmi.mv.as_mv.row
263 + x->block[yoffset+5].bmi.mv.as_mv.row;
265 temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8);
267 x->block[uoffset].bmi.mv.as_mv.row = (temp / 8) & x->fullpixel_mask;
269 temp = x->block[yoffset ].bmi.mv.as_mv.col
270 + x->block[yoffset+1].bmi.mv.as_mv.col
271 + x->block[yoffset+4].bmi.mv.as_mv.col
272 + x->block[yoffset+5].bmi.mv.as_mv.col;
274 temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8);
276 x->block[uoffset].bmi.mv.as_mv.col = (temp / 8) & x->fullpixel_mask;
278 x->block[voffset].bmi.mv.as_int = x->block[uoffset].bmi.mv.as_int;
279 }
280 }
282 base_pre = x->pre.u_buffer;
283 for (i = 16; i < 20; i += 2)
284 {
285 BLOCKD *d0 = &x->block[i];
286 BLOCKD *d1 = &x->block[i+1];
288 if (d0->bmi.mv.as_int == d1->bmi.mv.as_int)
289 build_inter_predictors2b(x, d0, d0->predictor, 8, base_pre, pre_stride);
290 else
291 {
292 vp8_build_inter_predictors_b(d0, 8, base_pre, pre_stride, x->subpixel_predict);
293 vp8_build_inter_predictors_b(d1, 8, base_pre, pre_stride, x->subpixel_predict);
294 }
295 }
297 base_pre = x->pre.v_buffer;
298 for (i = 20; i < 24; i += 2)
299 {
300 BLOCKD *d0 = &x->block[i];
301 BLOCKD *d1 = &x->block[i+1];
303 if (d0->bmi.mv.as_int == d1->bmi.mv.as_int)
304 build_inter_predictors2b(x, d0, d0->predictor, 8, base_pre, pre_stride);
305 else
306 {
307 vp8_build_inter_predictors_b(d0, 8, base_pre, pre_stride, x->subpixel_predict);
308 vp8_build_inter_predictors_b(d1, 8, base_pre, pre_stride, x->subpixel_predict);
309 }
310 }
311 }
314 /*encoder only*/
315 void vp8_build_inter16x16_predictors_mby(MACROBLOCKD *x,
316 unsigned char *dst_y,
317 int dst_ystride)
318 {
319 unsigned char *ptr_base;
320 unsigned char *ptr;
321 int mv_row = x->mode_info_context->mbmi.mv.as_mv.row;
322 int mv_col = x->mode_info_context->mbmi.mv.as_mv.col;
323 int pre_stride = x->pre.y_stride;
325 ptr_base = x->pre.y_buffer;
326 ptr = ptr_base + (mv_row >> 3) * pre_stride + (mv_col >> 3);
328 if ((mv_row | mv_col) & 7)
329 {
330 x->subpixel_predict16x16(ptr, pre_stride, mv_col & 7, mv_row & 7,
331 dst_y, dst_ystride);
332 }
333 else
334 {
335 vp8_copy_mem16x16(ptr, pre_stride, dst_y,
336 dst_ystride);
337 }
338 }
340 static void clamp_mv_to_umv_border(MV *mv, const MACROBLOCKD *xd)
341 {
342 /* If the MV points so far into the UMV border that no visible pixels
343 * are used for reconstruction, the subpel part of the MV can be
344 * discarded and the MV limited to 16 pixels with equivalent results.
345 *
346 * This limit kicks in at 19 pixels for the top and left edges, for
347 * the 16 pixels plus 3 taps right of the central pixel when subpel
348 * filtering. The bottom and right edges use 16 pixels plus 2 pixels
349 * left of the central pixel when filtering.
350 */
351 if (mv->col < (xd->mb_to_left_edge - (19 << 3)))
352 mv->col = xd->mb_to_left_edge - (16 << 3);
353 else if (mv->col > xd->mb_to_right_edge + (18 << 3))
354 mv->col = xd->mb_to_right_edge + (16 << 3);
356 if (mv->row < (xd->mb_to_top_edge - (19 << 3)))
357 mv->row = xd->mb_to_top_edge - (16 << 3);
358 else if (mv->row > xd->mb_to_bottom_edge + (18 << 3))
359 mv->row = xd->mb_to_bottom_edge + (16 << 3);
360 }
362 /* A version of the above function for chroma block MVs.*/
363 static void clamp_uvmv_to_umv_border(MV *mv, const MACROBLOCKD *xd)
364 {
365 mv->col = (2*mv->col < (xd->mb_to_left_edge - (19 << 3))) ?
366 (xd->mb_to_left_edge - (16 << 3)) >> 1 : mv->col;
367 mv->col = (2*mv->col > xd->mb_to_right_edge + (18 << 3)) ?
368 (xd->mb_to_right_edge + (16 << 3)) >> 1 : mv->col;
370 mv->row = (2*mv->row < (xd->mb_to_top_edge - (19 << 3))) ?
371 (xd->mb_to_top_edge - (16 << 3)) >> 1 : mv->row;
372 mv->row = (2*mv->row > xd->mb_to_bottom_edge + (18 << 3)) ?
373 (xd->mb_to_bottom_edge + (16 << 3)) >> 1 : mv->row;
374 }
376 void vp8_build_inter16x16_predictors_mb(MACROBLOCKD *x,
377 unsigned char *dst_y,
378 unsigned char *dst_u,
379 unsigned char *dst_v,
380 int dst_ystride,
381 int dst_uvstride)
382 {
383 int offset;
384 unsigned char *ptr;
385 unsigned char *uptr, *vptr;
387 int_mv _16x16mv;
389 unsigned char *ptr_base = x->pre.y_buffer;
390 int pre_stride = x->pre.y_stride;
392 _16x16mv.as_int = x->mode_info_context->mbmi.mv.as_int;
394 if (x->mode_info_context->mbmi.need_to_clamp_mvs)
395 {
396 clamp_mv_to_umv_border(&_16x16mv.as_mv, x);
397 }
399 ptr = ptr_base + ( _16x16mv.as_mv.row >> 3) * pre_stride + (_16x16mv.as_mv.col >> 3);
401 if ( _16x16mv.as_int & 0x00070007)
402 {
403 x->subpixel_predict16x16(ptr, pre_stride, _16x16mv.as_mv.col & 7, _16x16mv.as_mv.row & 7, dst_y, dst_ystride);
404 }
405 else
406 {
407 vp8_copy_mem16x16(ptr, pre_stride, dst_y, dst_ystride);
408 }
410 /* calc uv motion vectors */
411 _16x16mv.as_mv.row += 1 | (_16x16mv.as_mv.row >> (sizeof(int) * CHAR_BIT - 1));
412 _16x16mv.as_mv.col += 1 | (_16x16mv.as_mv.col >> (sizeof(int) * CHAR_BIT - 1));
413 _16x16mv.as_mv.row /= 2;
414 _16x16mv.as_mv.col /= 2;
415 _16x16mv.as_mv.row &= x->fullpixel_mask;
416 _16x16mv.as_mv.col &= x->fullpixel_mask;
418 pre_stride >>= 1;
419 offset = ( _16x16mv.as_mv.row >> 3) * pre_stride + (_16x16mv.as_mv.col >> 3);
420 uptr = x->pre.u_buffer + offset;
421 vptr = x->pre.v_buffer + offset;
423 if ( _16x16mv.as_int & 0x00070007)
424 {
425 x->subpixel_predict8x8(uptr, pre_stride, _16x16mv.as_mv.col & 7, _16x16mv.as_mv.row & 7, dst_u, dst_uvstride);
426 x->subpixel_predict8x8(vptr, pre_stride, _16x16mv.as_mv.col & 7, _16x16mv.as_mv.row & 7, dst_v, dst_uvstride);
427 }
428 else
429 {
430 vp8_copy_mem8x8(uptr, pre_stride, dst_u, dst_uvstride);
431 vp8_copy_mem8x8(vptr, pre_stride, dst_v, dst_uvstride);
432 }
433 }
435 static void build_inter4x4_predictors_mb(MACROBLOCKD *x)
436 {
437 int i;
438 unsigned char *base_dst = x->dst.y_buffer;
439 unsigned char *base_pre = x->pre.y_buffer;
441 if (x->mode_info_context->mbmi.partitioning < 3)
442 {
443 BLOCKD *b;
444 int dst_stride = x->dst.y_stride;
446 x->block[ 0].bmi = x->mode_info_context->bmi[ 0];
447 x->block[ 2].bmi = x->mode_info_context->bmi[ 2];
448 x->block[ 8].bmi = x->mode_info_context->bmi[ 8];
449 x->block[10].bmi = x->mode_info_context->bmi[10];
450 if (x->mode_info_context->mbmi.need_to_clamp_mvs)
451 {
452 clamp_mv_to_umv_border(&x->block[ 0].bmi.mv.as_mv, x);
453 clamp_mv_to_umv_border(&x->block[ 2].bmi.mv.as_mv, x);
454 clamp_mv_to_umv_border(&x->block[ 8].bmi.mv.as_mv, x);
455 clamp_mv_to_umv_border(&x->block[10].bmi.mv.as_mv, x);
456 }
458 b = &x->block[ 0];
459 build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride);
460 b = &x->block[ 2];
461 build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride);
462 b = &x->block[ 8];
463 build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride);
464 b = &x->block[10];
465 build_inter_predictors4b(x, b, base_dst + b->offset, dst_stride, base_pre, dst_stride);
466 }
467 else
468 {
469 for (i = 0; i < 16; i += 2)
470 {
471 BLOCKD *d0 = &x->block[i];
472 BLOCKD *d1 = &x->block[i+1];
473 int dst_stride = x->dst.y_stride;
475 x->block[i+0].bmi = x->mode_info_context->bmi[i+0];
476 x->block[i+1].bmi = x->mode_info_context->bmi[i+1];
477 if (x->mode_info_context->mbmi.need_to_clamp_mvs)
478 {
479 clamp_mv_to_umv_border(&x->block[i+0].bmi.mv.as_mv, x);
480 clamp_mv_to_umv_border(&x->block[i+1].bmi.mv.as_mv, x);
481 }
483 if (d0->bmi.mv.as_int == d1->bmi.mv.as_int)
484 build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride);
485 else
486 {
487 build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
488 build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
489 }
491 }
493 }
494 base_dst = x->dst.u_buffer;
495 base_pre = x->pre.u_buffer;
496 for (i = 16; i < 20; i += 2)
497 {
498 BLOCKD *d0 = &x->block[i];
499 BLOCKD *d1 = &x->block[i+1];
500 int dst_stride = x->dst.uv_stride;
502 /* Note: uv mvs already clamped in build_4x4uvmvs() */
504 if (d0->bmi.mv.as_int == d1->bmi.mv.as_int)
505 build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride);
506 else
507 {
508 build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
509 build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
510 }
511 }
513 base_dst = x->dst.v_buffer;
514 base_pre = x->pre.v_buffer;
515 for (i = 20; i < 24; i += 2)
516 {
517 BLOCKD *d0 = &x->block[i];
518 BLOCKD *d1 = &x->block[i+1];
519 int dst_stride = x->dst.uv_stride;
521 /* Note: uv mvs already clamped in build_4x4uvmvs() */
523 if (d0->bmi.mv.as_int == d1->bmi.mv.as_int)
524 build_inter_predictors2b(x, d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride);
525 else
526 {
527 build_inter_predictors_b(d0, base_dst + d0->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
528 build_inter_predictors_b(d1, base_dst + d1->offset, dst_stride, base_pre, dst_stride, x->subpixel_predict);
529 }
530 }
531 }
533 static
534 void build_4x4uvmvs(MACROBLOCKD *x)
535 {
536 int i, j;
538 for (i = 0; i < 2; i++)
539 {
540 for (j = 0; j < 2; j++)
541 {
542 int yoffset = i * 8 + j * 2;
543 int uoffset = 16 + i * 2 + j;
544 int voffset = 20 + i * 2 + j;
546 int temp;
548 temp = x->mode_info_context->bmi[yoffset + 0].mv.as_mv.row
549 + x->mode_info_context->bmi[yoffset + 1].mv.as_mv.row
550 + x->mode_info_context->bmi[yoffset + 4].mv.as_mv.row
551 + x->mode_info_context->bmi[yoffset + 5].mv.as_mv.row;
553 temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8);
555 x->block[uoffset].bmi.mv.as_mv.row = (temp / 8) & x->fullpixel_mask;
557 temp = x->mode_info_context->bmi[yoffset + 0].mv.as_mv.col
558 + x->mode_info_context->bmi[yoffset + 1].mv.as_mv.col
559 + x->mode_info_context->bmi[yoffset + 4].mv.as_mv.col
560 + x->mode_info_context->bmi[yoffset + 5].mv.as_mv.col;
562 temp += 4 + ((temp >> (sizeof(temp) * CHAR_BIT - 1)) * 8);
564 x->block[uoffset].bmi.mv.as_mv.col = (temp / 8) & x->fullpixel_mask;
566 if (x->mode_info_context->mbmi.need_to_clamp_mvs)
567 clamp_uvmv_to_umv_border(&x->block[uoffset].bmi.mv.as_mv, x);
569 x->block[voffset].bmi.mv.as_int = x->block[uoffset].bmi.mv.as_int;
570 }
571 }
572 }
574 void vp8_build_inter_predictors_mb(MACROBLOCKD *xd)
575 {
576 if (xd->mode_info_context->mbmi.mode != SPLITMV)
577 {
578 vp8_build_inter16x16_predictors_mb(xd, xd->dst.y_buffer,
579 xd->dst.u_buffer, xd->dst.v_buffer,
580 xd->dst.y_stride, xd->dst.uv_stride);
581 }
582 else
583 {
584 build_4x4uvmvs(xd);
585 build_inter4x4_predictors_mb(xd);
586 }
587 }
