2 * VC-1 and WMV3 decoder - DSP functions
3 * Copyright (c) 2006 Konstantin Shishkov
5 * This file is part of FFmpeg.
7 * FFmpeg 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.
12 * FFmpeg 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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * VC-1 and WMV3 decoder
31 /** Apply overlap transform to horizontal edge
33 static void vc1_v_overlap_c(uint8_t* src, int stride)
39 for(i = 0; i < 8; i++) {
44 d1 = (a - d + 3 + rnd) >> 3;
45 d2 = (a - d + b - c + 4 - rnd) >> 3;
47 src[-2*stride] = a - d1;
48 src[-stride] = av_clip_uint8(b - d2);
49 src[0] = av_clip_uint8(c + d2);
56 /** Apply overlap transform to vertical edge
58 static void vc1_h_overlap_c(uint8_t* src, int stride)
64 for(i = 0; i < 8; i++) {
69 d1 = (a - d + 3 + rnd) >> 3;
70 d2 = (a - d + b - c + 4 - rnd) >> 3;
73 src[-1] = av_clip_uint8(b - d2);
74 src[0] = av_clip_uint8(c + d2);
82 * VC-1 in-loop deblocking filter for one line
83 * @param src source block type
84 * @param stride block stride
85 * @param pq block quantizer
86 * @return whether other 3 pairs should be filtered or not
89 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){
90 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
92 int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;
93 int a0_sign = a0 >> 31; /* Store sign */
94 a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
96 int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);
97 int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);
98 if(a1 < a0 || a2 < a0){
99 int clip = src[-1*stride] - src[ 0*stride];
100 int clip_sign = clip >> 31;
101 clip = ((clip ^ clip_sign) - clip_sign)>>1;
103 int a3 = FFMIN(a1, a2);
104 int d = 5 * (a3 - a0);
105 int d_sign = (d >> 31);
106 d = ((d ^ d_sign) - d_sign) >> 3;
109 if( d_sign ^ clip_sign )
113 d = (d ^ d_sign) - d_sign; /* Restore sign */
114 src[-1*stride] = cm[src[-1*stride] - d];
115 src[ 0*stride] = cm[src[ 0*stride] + d];
125 * VC-1 in-loop deblocking filter
126 * @param src source block type
127 * @param step distance between horizontally adjacent elements
128 * @param stride distance between vertically adjacent elements
129 * @param len edge length to filter (4 or 8 pixels)
130 * @param pq block quantizer
133 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)
138 for(i = 0; i < len; i += 4){
139 filt3 = vc1_filter_line(src + 2*step, stride, pq);
141 vc1_filter_line(src + 0*step, stride, pq);
142 vc1_filter_line(src + 1*step, stride, pq);
143 vc1_filter_line(src + 3*step, stride, pq);
149 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
151 vc1_loop_filter(src, 1, stride, 4, pq);
154 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
156 vc1_loop_filter(src, stride, 1, 4, pq);
159 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
161 vc1_loop_filter(src, 1, stride, 8, pq);
164 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
166 vc1_loop_filter(src, stride, 1, 8, pq);
169 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
171 vc1_loop_filter(src, 1, stride, 16, pq);
174 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
176 vc1_loop_filter(src, stride, 1, 16, pq);
179 /** Do inverse transform on 8x8 block
181 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
185 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
186 dc = (3 * dc + 1) >> 1;
187 dc = (3 * dc + 16) >> 5;
188 for(i = 0; i < 8; i++){
189 dest[0] = cm[dest[0]+dc];
190 dest[1] = cm[dest[1]+dc];
191 dest[2] = cm[dest[2]+dc];
192 dest[3] = cm[dest[3]+dc];
193 dest[4] = cm[dest[4]+dc];
194 dest[5] = cm[dest[5]+dc];
195 dest[6] = cm[dest[6]+dc];
196 dest[7] = cm[dest[7]+dc];
201 static void vc1_inv_trans_8x8_c(DCTELEM block[64])
204 register int t1,t2,t3,t4,t5,t6,t7,t8;
209 for(i = 0; i < 8; i++){
210 t1 = 12 * (src[0] + src[4]) + 4;
211 t2 = 12 * (src[0] - src[4]) + 4;
212 t3 = 16 * src[2] + 6 * src[6];
213 t4 = 6 * src[2] - 16 * src[6];
220 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
221 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
222 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
223 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
225 dst[0] = (t5 + t1) >> 3;
226 dst[1] = (t6 + t2) >> 3;
227 dst[2] = (t7 + t3) >> 3;
228 dst[3] = (t8 + t4) >> 3;
229 dst[4] = (t8 - t4) >> 3;
230 dst[5] = (t7 - t3) >> 3;
231 dst[6] = (t6 - t2) >> 3;
232 dst[7] = (t5 - t1) >> 3;
240 for(i = 0; i < 8; i++){
241 t1 = 12 * (src[ 0] + src[32]) + 64;
242 t2 = 12 * (src[ 0] - src[32]) + 64;
243 t3 = 16 * src[16] + 6 * src[48];
244 t4 = 6 * src[16] - 16 * src[48];
251 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
252 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
253 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
254 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
256 dst[ 0] = (t5 + t1) >> 7;
257 dst[ 8] = (t6 + t2) >> 7;
258 dst[16] = (t7 + t3) >> 7;
259 dst[24] = (t8 + t4) >> 7;
260 dst[32] = (t8 - t4 + 1) >> 7;
261 dst[40] = (t7 - t3 + 1) >> 7;
262 dst[48] = (t6 - t2 + 1) >> 7;
263 dst[56] = (t5 - t1 + 1) >> 7;
270 /** Do inverse transform on 8x4 part of block
272 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
276 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
277 dc = ( 3 * dc + 1) >> 1;
278 dc = (17 * dc + 64) >> 7;
279 for(i = 0; i < 4; i++){
280 dest[0] = cm[dest[0]+dc];
281 dest[1] = cm[dest[1]+dc];
282 dest[2] = cm[dest[2]+dc];
283 dest[3] = cm[dest[3]+dc];
284 dest[4] = cm[dest[4]+dc];
285 dest[5] = cm[dest[5]+dc];
286 dest[6] = cm[dest[6]+dc];
287 dest[7] = cm[dest[7]+dc];
292 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
295 register int t1,t2,t3,t4,t5,t6,t7,t8;
297 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
301 for(i = 0; i < 4; i++){
302 t1 = 12 * (src[0] + src[4]) + 4;
303 t2 = 12 * (src[0] - src[4]) + 4;
304 t3 = 16 * src[2] + 6 * src[6];
305 t4 = 6 * src[2] - 16 * src[6];
312 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
313 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
314 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
315 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
317 dst[0] = (t5 + t1) >> 3;
318 dst[1] = (t6 + t2) >> 3;
319 dst[2] = (t7 + t3) >> 3;
320 dst[3] = (t8 + t4) >> 3;
321 dst[4] = (t8 - t4) >> 3;
322 dst[5] = (t7 - t3) >> 3;
323 dst[6] = (t6 - t2) >> 3;
324 dst[7] = (t5 - t1) >> 3;
331 for(i = 0; i < 8; i++){
332 t1 = 17 * (src[ 0] + src[16]) + 64;
333 t2 = 17 * (src[ 0] - src[16]) + 64;
334 t3 = 22 * src[ 8] + 10 * src[24];
335 t4 = 22 * src[24] - 10 * src[ 8];
337 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
338 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
339 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
340 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
347 /** Do inverse transform on 4x8 parts of block
349 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
353 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
354 dc = (17 * dc + 4) >> 3;
355 dc = (12 * dc + 64) >> 7;
356 for(i = 0; i < 8; i++){
357 dest[0] = cm[dest[0]+dc];
358 dest[1] = cm[dest[1]+dc];
359 dest[2] = cm[dest[2]+dc];
360 dest[3] = cm[dest[3]+dc];
365 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
368 register int t1,t2,t3,t4,t5,t6,t7,t8;
370 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
374 for(i = 0; i < 8; i++){
375 t1 = 17 * (src[0] + src[2]) + 4;
376 t2 = 17 * (src[0] - src[2]) + 4;
377 t3 = 22 * src[1] + 10 * src[3];
378 t4 = 22 * src[3] - 10 * src[1];
380 dst[0] = (t1 + t3) >> 3;
381 dst[1] = (t2 - t4) >> 3;
382 dst[2] = (t2 + t4) >> 3;
383 dst[3] = (t1 - t3) >> 3;
390 for(i = 0; i < 4; i++){
391 t1 = 12 * (src[ 0] + src[32]) + 64;
392 t2 = 12 * (src[ 0] - src[32]) + 64;
393 t3 = 16 * src[16] + 6 * src[48];
394 t4 = 6 * src[16] - 16 * src[48];
401 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
402 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
403 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
404 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
406 dest[0*linesize] = cm[dest[0*linesize] + ((t5 + t1) >> 7)];
407 dest[1*linesize] = cm[dest[1*linesize] + ((t6 + t2) >> 7)];
408 dest[2*linesize] = cm[dest[2*linesize] + ((t7 + t3) >> 7)];
409 dest[3*linesize] = cm[dest[3*linesize] + ((t8 + t4) >> 7)];
410 dest[4*linesize] = cm[dest[4*linesize] + ((t8 - t4 + 1) >> 7)];
411 dest[5*linesize] = cm[dest[5*linesize] + ((t7 - t3 + 1) >> 7)];
412 dest[6*linesize] = cm[dest[6*linesize] + ((t6 - t2 + 1) >> 7)];
413 dest[7*linesize] = cm[dest[7*linesize] + ((t5 - t1 + 1) >> 7)];
420 /** Do inverse transform on 4x4 part of block
422 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
426 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
427 dc = (17 * dc + 4) >> 3;
428 dc = (17 * dc + 64) >> 7;
429 for(i = 0; i < 4; i++){
430 dest[0] = cm[dest[0]+dc];
431 dest[1] = cm[dest[1]+dc];
432 dest[2] = cm[dest[2]+dc];
433 dest[3] = cm[dest[3]+dc];
438 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
441 register int t1,t2,t3,t4;
443 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
447 for(i = 0; i < 4; i++){
448 t1 = 17 * (src[0] + src[2]) + 4;
449 t2 = 17 * (src[0] - src[2]) + 4;
450 t3 = 22 * src[1] + 10 * src[3];
451 t4 = 22 * src[3] - 10 * src[1];
453 dst[0] = (t1 + t3) >> 3;
454 dst[1] = (t2 - t4) >> 3;
455 dst[2] = (t2 + t4) >> 3;
456 dst[3] = (t1 - t3) >> 3;
463 for(i = 0; i < 4; i++){
464 t1 = 17 * (src[ 0] + src[16]) + 64;
465 t2 = 17 * (src[ 0] - src[16]) + 64;
466 t3 = 22 * src[ 8] + 10 * src[24];
467 t4 = 22 * src[24] - 10 * src[ 8];
469 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
470 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
471 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
472 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
479 /* motion compensation functions */
480 /** Filter in case of 2 filters */
481 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
482 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
485 case 0: /* no shift - should not occur */ \
487 case 1: /* 1/4 shift */ \
488 return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
489 case 2: /* 1/2 shift */ \
490 return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
491 case 3: /* 3/4 shift */ \
492 return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
494 return 0; /* should not occur */ \
497 VC1_MSPEL_FILTER_16B(ver, uint8_t);
498 VC1_MSPEL_FILTER_16B(hor, int16_t);
501 /** Filter used to interpolate fractional pel values
503 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
509 return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
511 return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
513 return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
515 return 0; //should not occur
518 /** Function used to do motion compensation with bicubic interpolation
520 #define VC1_MSPEL_MC(OP, OPNAME)\
521 static void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)\
525 if (vmode) { /* Horizontal filter to apply */\
528 if (hmode) { /* Vertical filter to apply, output to tmp */\
529 static const int shift_value[] = { 0, 5, 1, 5 };\
530 int shift = (shift_value[hmode]+shift_value[vmode])>>1;\
531 int16_t tmp[11*8], *tptr = tmp;\
533 r = (1<<(shift-1)) + rnd-1;\
536 for(j = 0; j < 8; j++) {\
537 for(i = 0; i < 11; i++)\
538 tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\
545 for(j = 0; j < 8; j++) {\
546 for(i = 0; i < 8; i++)\
547 OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\
554 else { /* No horizontal filter, output 8 lines to dst */\
557 for(j = 0; j < 8; j++) {\
558 for(i = 0; i < 8; i++)\
559 OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\
567 /* Horizontal mode with no vertical mode */\
568 for(j = 0; j < 8; j++) {\
569 for(i = 0; i < 8; i++)\
570 OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\
576 #define op_put(a, b) a = av_clip_uint8(b)
577 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
579 VC1_MSPEL_MC(op_put, put_)
580 VC1_MSPEL_MC(op_avg, avg_)
582 /* pixel functions - really are entry points to vc1_mspel_mc */
584 #define PUT_VC1_MSPEL(a, b)\
585 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
586 put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
588 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
589 avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
611 av_cold void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) {
612 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
613 dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
614 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
615 dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
616 dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;
617 dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;
618 dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;
619 dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;
620 dsp->vc1_h_overlap = vc1_h_overlap_c;
621 dsp->vc1_v_overlap = vc1_v_overlap_c;
622 dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;
623 dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;
624 dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;
625 dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;
626 dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;
627 dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;
629 dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_c;
630 dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
631 dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
632 dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
633 dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
634 dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
635 dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
636 dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
637 dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
638 dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
639 dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
640 dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
641 dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
642 dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
643 dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
644 dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
646 dsp->avg_vc1_mspel_pixels_tab[ 0] = ff_avg_vc1_mspel_mc00_c;
647 dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;
648 dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;
649 dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;
650 dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;
651 dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;
652 dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;
653 dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;
654 dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;
655 dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;
656 dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;
657 dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;
658 dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;
659 dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;
660 dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;
661 dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;