vc1dsp.c
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1 /*
2  * VC-1 and WMV3 decoder - DSP functions
3  * Copyright (c) 2006 Konstantin Shishkov
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 
28 #include "vc1dsp.h"
29 #include "libavutil/common.h"
30 
31 
34 static void vc1_v_overlap_c(uint8_t* src, int stride)
35 {
36  int i;
37  int a, b, c, d;
38  int d1, d2;
39  int rnd = 1;
40  for(i = 0; i < 8; i++) {
41  a = src[-2*stride];
42  b = src[-stride];
43  c = src[0];
44  d = src[stride];
45  d1 = (a - d + 3 + rnd) >> 3;
46  d2 = (a - d + b - c + 4 - rnd) >> 3;
47 
48  src[-2*stride] = a - d1;
49  src[-stride] = av_clip_uint8(b - d2);
50  src[0] = av_clip_uint8(c + d2);
51  src[stride] = d + d1;
52  src++;
53  rnd = !rnd;
54  }
55 }
56 
59 static void vc1_h_overlap_c(uint8_t* src, int stride)
60 {
61  int i;
62  int a, b, c, d;
63  int d1, d2;
64  int rnd = 1;
65  for(i = 0; i < 8; i++) {
66  a = src[-2];
67  b = src[-1];
68  c = src[0];
69  d = src[1];
70  d1 = (a - d + 3 + rnd) >> 3;
71  d2 = (a - d + b - c + 4 - rnd) >> 3;
72 
73  src[-2] = a - d1;
74  src[-1] = av_clip_uint8(b - d2);
75  src[0] = av_clip_uint8(c + d2);
76  src[1] = d + d1;
77  src += stride;
78  rnd = !rnd;
79  }
80 }
81 
82 static void vc1_v_s_overlap_c(DCTELEM *top, DCTELEM *bottom)
83 {
84  int i;
85  int a, b, c, d;
86  int d1, d2;
87  int rnd1 = 4, rnd2 = 3;
88  for(i = 0; i < 8; i++) {
89  a = top[48];
90  b = top[56];
91  c = bottom[0];
92  d = bottom[8];
93  d1 = a - d;
94  d2 = a - d + b - c;
95 
96  top[48] = ((a << 3) - d1 + rnd1) >> 3;
97  top[56] = ((b << 3) - d2 + rnd2) >> 3;
98  bottom[0] = ((c << 3) + d2 + rnd1) >> 3;
99  bottom[8] = ((d << 3) + d1 + rnd2) >> 3;
100 
101  bottom++;
102  top++;
103  rnd2 = 7 - rnd2;
104  rnd1 = 7 - rnd1;
105  }
106 }
107 
108 static void vc1_h_s_overlap_c(DCTELEM *left, DCTELEM *right)
109 {
110  int i;
111  int a, b, c, d;
112  int d1, d2;
113  int rnd1 = 4, rnd2 = 3;
114  for(i = 0; i < 8; i++) {
115  a = left[6];
116  b = left[7];
117  c = right[0];
118  d = right[1];
119  d1 = a - d;
120  d2 = a - d + b - c;
121 
122  left[6] = ((a << 3) - d1 + rnd1) >> 3;
123  left[7] = ((b << 3) - d2 + rnd2) >> 3;
124  right[0] = ((c << 3) + d2 + rnd1) >> 3;
125  right[1] = ((d << 3) + d1 + rnd2) >> 3;
126 
127  right += 8;
128  left += 8;
129  rnd2 = 7 - rnd2;
130  rnd1 = 7 - rnd1;
131  }
132 }
133 
142 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){
143  int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;
144  int a0_sign = a0 >> 31; /* Store sign */
145  a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
146  if(a0 < pq){
147  int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);
148  int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);
149  if(a1 < a0 || a2 < a0){
150  int clip = src[-1*stride] - src[ 0*stride];
151  int clip_sign = clip >> 31;
152  clip = ((clip ^ clip_sign) - clip_sign)>>1;
153  if(clip){
154  int a3 = FFMIN(a1, a2);
155  int d = 5 * (a3 - a0);
156  int d_sign = (d >> 31);
157  d = ((d ^ d_sign) - d_sign) >> 3;
158  d_sign ^= a0_sign;
159 
160  if( d_sign ^ clip_sign )
161  d = 0;
162  else{
163  d = FFMIN(d, clip);
164  d = (d ^ d_sign) - d_sign; /* Restore sign */
165  src[-1*stride] = av_clip_uint8(src[-1*stride] - d);
166  src[ 0*stride] = av_clip_uint8(src[ 0*stride] + d);
167  }
168  return 1;
169  }
170  }
171  }
172  return 0;
173 }
174 
184 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)
185 {
186  int i;
187  int filt3;
188 
189  for(i = 0; i < len; i += 4){
190  filt3 = vc1_filter_line(src + 2*step, stride, pq);
191  if(filt3){
192  vc1_filter_line(src + 0*step, stride, pq);
193  vc1_filter_line(src + 1*step, stride, pq);
194  vc1_filter_line(src + 3*step, stride, pq);
195  }
196  src += step * 4;
197  }
198 }
199 
200 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
201 {
202  vc1_loop_filter(src, 1, stride, 4, pq);
203 }
204 
205 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
206 {
207  vc1_loop_filter(src, stride, 1, 4, pq);
208 }
209 
210 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
211 {
212  vc1_loop_filter(src, 1, stride, 8, pq);
213 }
214 
215 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
216 {
217  vc1_loop_filter(src, stride, 1, 8, pq);
218 }
219 
220 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
221 {
222  vc1_loop_filter(src, 1, stride, 16, pq);
223 }
224 
225 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
226 {
227  vc1_loop_filter(src, stride, 1, 16, pq);
228 }
229 
232 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
233 {
234  int i;
235  int dc = block[0];
236  dc = (3 * dc + 1) >> 1;
237  dc = (3 * dc + 16) >> 5;
238  for(i = 0; i < 8; i++){
239  dest[0] = av_clip_uint8(dest[0] + dc);
240  dest[1] = av_clip_uint8(dest[1] + dc);
241  dest[2] = av_clip_uint8(dest[2] + dc);
242  dest[3] = av_clip_uint8(dest[3] + dc);
243  dest[4] = av_clip_uint8(dest[4] + dc);
244  dest[5] = av_clip_uint8(dest[5] + dc);
245  dest[6] = av_clip_uint8(dest[6] + dc);
246  dest[7] = av_clip_uint8(dest[7] + dc);
247  dest += linesize;
248  }
249 }
250 
252 {
253  int i;
254  register int t1,t2,t3,t4,t5,t6,t7,t8;
255  DCTELEM *src, *dst, temp[64];
256 
257  src = block;
258  dst = temp;
259  for(i = 0; i < 8; i++){
260  t1 = 12 * (src[ 0] + src[32]) + 4;
261  t2 = 12 * (src[ 0] - src[32]) + 4;
262  t3 = 16 * src[16] + 6 * src[48];
263  t4 = 6 * src[16] - 16 * src[48];
264 
265  t5 = t1 + t3;
266  t6 = t2 + t4;
267  t7 = t2 - t4;
268  t8 = t1 - t3;
269 
270  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
271  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
272  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
273  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
274 
275  dst[0] = (t5 + t1) >> 3;
276  dst[1] = (t6 + t2) >> 3;
277  dst[2] = (t7 + t3) >> 3;
278  dst[3] = (t8 + t4) >> 3;
279  dst[4] = (t8 - t4) >> 3;
280  dst[5] = (t7 - t3) >> 3;
281  dst[6] = (t6 - t2) >> 3;
282  dst[7] = (t5 - t1) >> 3;
283 
284  src += 1;
285  dst += 8;
286  }
287 
288  src = temp;
289  dst = block;
290  for(i = 0; i < 8; i++){
291  t1 = 12 * (src[ 0] + src[32]) + 64;
292  t2 = 12 * (src[ 0] - src[32]) + 64;
293  t3 = 16 * src[16] + 6 * src[48];
294  t4 = 6 * src[16] - 16 * src[48];
295 
296  t5 = t1 + t3;
297  t6 = t2 + t4;
298  t7 = t2 - t4;
299  t8 = t1 - t3;
300 
301  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
302  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
303  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
304  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
305 
306  dst[ 0] = (t5 + t1) >> 7;
307  dst[ 8] = (t6 + t2) >> 7;
308  dst[16] = (t7 + t3) >> 7;
309  dst[24] = (t8 + t4) >> 7;
310  dst[32] = (t8 - t4 + 1) >> 7;
311  dst[40] = (t7 - t3 + 1) >> 7;
312  dst[48] = (t6 - t2 + 1) >> 7;
313  dst[56] = (t5 - t1 + 1) >> 7;
314 
315  src++;
316  dst++;
317  }
318 }
319 
322 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
323 {
324  int i;
325  int dc = block[0];
326  dc = ( 3 * dc + 1) >> 1;
327  dc = (17 * dc + 64) >> 7;
328  for(i = 0; i < 4; i++){
329  dest[0] = av_clip_uint8(dest[0] + dc);
330  dest[1] = av_clip_uint8(dest[1] + dc);
331  dest[2] = av_clip_uint8(dest[2] + dc);
332  dest[3] = av_clip_uint8(dest[3] + dc);
333  dest[4] = av_clip_uint8(dest[4] + dc);
334  dest[5] = av_clip_uint8(dest[5] + dc);
335  dest[6] = av_clip_uint8(dest[6] + dc);
336  dest[7] = av_clip_uint8(dest[7] + dc);
337  dest += linesize;
338  }
339 }
340 
341 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
342 {
343  int i;
344  register int t1,t2,t3,t4,t5,t6,t7,t8;
345  DCTELEM *src, *dst;
346 
347  src = block;
348  dst = block;
349  for(i = 0; i < 4; i++){
350  t1 = 12 * (src[0] + src[4]) + 4;
351  t2 = 12 * (src[0] - src[4]) + 4;
352  t3 = 16 * src[2] + 6 * src[6];
353  t4 = 6 * src[2] - 16 * src[6];
354 
355  t5 = t1 + t3;
356  t6 = t2 + t4;
357  t7 = t2 - t4;
358  t8 = t1 - t3;
359 
360  t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
361  t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
362  t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
363  t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
364 
365  dst[0] = (t5 + t1) >> 3;
366  dst[1] = (t6 + t2) >> 3;
367  dst[2] = (t7 + t3) >> 3;
368  dst[3] = (t8 + t4) >> 3;
369  dst[4] = (t8 - t4) >> 3;
370  dst[5] = (t7 - t3) >> 3;
371  dst[6] = (t6 - t2) >> 3;
372  dst[7] = (t5 - t1) >> 3;
373 
374  src += 8;
375  dst += 8;
376  }
377 
378  src = block;
379  for(i = 0; i < 8; i++){
380  t1 = 17 * (src[ 0] + src[16]) + 64;
381  t2 = 17 * (src[ 0] - src[16]) + 64;
382  t3 = 22 * src[ 8] + 10 * src[24];
383  t4 = 22 * src[24] - 10 * src[ 8];
384 
385  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
386  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
387  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
388  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
389 
390  src ++;
391  dest++;
392  }
393 }
394 
397 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
398 {
399  int i;
400  int dc = block[0];
401  dc = (17 * dc + 4) >> 3;
402  dc = (12 * dc + 64) >> 7;
403  for(i = 0; i < 8; i++){
404  dest[0] = av_clip_uint8(dest[0] + dc);
405  dest[1] = av_clip_uint8(dest[1] + dc);
406  dest[2] = av_clip_uint8(dest[2] + dc);
407  dest[3] = av_clip_uint8(dest[3] + dc);
408  dest += linesize;
409  }
410 }
411 
412 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
413 {
414  int i;
415  register int t1,t2,t3,t4,t5,t6,t7,t8;
416  DCTELEM *src, *dst;
417 
418  src = block;
419  dst = block;
420  for(i = 0; i < 8; i++){
421  t1 = 17 * (src[0] + src[2]) + 4;
422  t2 = 17 * (src[0] - src[2]) + 4;
423  t3 = 22 * src[1] + 10 * src[3];
424  t4 = 22 * src[3] - 10 * src[1];
425 
426  dst[0] = (t1 + t3) >> 3;
427  dst[1] = (t2 - t4) >> 3;
428  dst[2] = (t2 + t4) >> 3;
429  dst[3] = (t1 - t3) >> 3;
430 
431  src += 8;
432  dst += 8;
433  }
434 
435  src = block;
436  for(i = 0; i < 4; i++){
437  t1 = 12 * (src[ 0] + src[32]) + 64;
438  t2 = 12 * (src[ 0] - src[32]) + 64;
439  t3 = 16 * src[16] + 6 * src[48];
440  t4 = 6 * src[16] - 16 * src[48];
441 
442  t5 = t1 + t3;
443  t6 = t2 + t4;
444  t7 = t2 - t4;
445  t8 = t1 - t3;
446 
447  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
448  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
449  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
450  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
451 
452  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t5 + t1) >> 7));
453  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t6 + t2) >> 7));
454  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t7 + t3) >> 7));
455  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t8 + t4) >> 7));
456  dest[4*linesize] = av_clip_uint8(dest[4*linesize] + ((t8 - t4 + 1) >> 7));
457  dest[5*linesize] = av_clip_uint8(dest[5*linesize] + ((t7 - t3 + 1) >> 7));
458  dest[6*linesize] = av_clip_uint8(dest[6*linesize] + ((t6 - t2 + 1) >> 7));
459  dest[7*linesize] = av_clip_uint8(dest[7*linesize] + ((t5 - t1 + 1) >> 7));
460 
461  src ++;
462  dest++;
463  }
464 }
465 
468 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
469 {
470  int i;
471  int dc = block[0];
472  dc = (17 * dc + 4) >> 3;
473  dc = (17 * dc + 64) >> 7;
474  for(i = 0; i < 4; i++){
475  dest[0] = av_clip_uint8(dest[0] + dc);
476  dest[1] = av_clip_uint8(dest[1] + dc);
477  dest[2] = av_clip_uint8(dest[2] + dc);
478  dest[3] = av_clip_uint8(dest[3] + dc);
479  dest += linesize;
480  }
481 }
482 
483 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
484 {
485  int i;
486  register int t1,t2,t3,t4;
487  DCTELEM *src, *dst;
488 
489  src = block;
490  dst = block;
491  for(i = 0; i < 4; i++){
492  t1 = 17 * (src[0] + src[2]) + 4;
493  t2 = 17 * (src[0] - src[2]) + 4;
494  t3 = 22 * src[1] + 10 * src[3];
495  t4 = 22 * src[3] - 10 * src[1];
496 
497  dst[0] = (t1 + t3) >> 3;
498  dst[1] = (t2 - t4) >> 3;
499  dst[2] = (t2 + t4) >> 3;
500  dst[3] = (t1 - t3) >> 3;
501 
502  src += 8;
503  dst += 8;
504  }
505 
506  src = block;
507  for(i = 0; i < 4; i++){
508  t1 = 17 * (src[ 0] + src[16]) + 64;
509  t2 = 17 * (src[ 0] - src[16]) + 64;
510  t3 = 22 * src[ 8] + 10 * src[24];
511  t4 = 22 * src[24] - 10 * src[ 8];
512 
513  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
514  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
515  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
516  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
517 
518  src ++;
519  dest++;
520  }
521 }
522 
523 /* motion compensation functions */
525 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
526 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
527 { \
528  switch(mode){ \
529  case 0: /* no shift - should not occur */ \
530  return 0; \
531  case 1: /* 1/4 shift */ \
532  return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
533  case 2: /* 1/2 shift */ \
534  return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
535  case 3: /* 3/4 shift */ \
536  return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
537  } \
538  return 0; /* should not occur */ \
539 }
540 
542 VC1_MSPEL_FILTER_16B(hor, int16_t)
543 
544 
547 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
548 {
549  switch(mode){
550  case 0: //no shift
551  return src[0];
552  case 1: // 1/4 shift
553  return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
554  case 2: // 1/2 shift
555  return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
556  case 3: // 3/4 shift
557  return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
558  }
559  return 0; //should not occur
560 }
561 
564 #define VC1_MSPEL_MC(OP, OPNAME)\
565 static av_always_inline void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)\
566 {\
567  int i, j;\
568 \
569  if (vmode) { /* Horizontal filter to apply */\
570  int r;\
571 \
572  if (hmode) { /* Vertical filter to apply, output to tmp */\
573  static const int shift_value[] = { 0, 5, 1, 5 };\
574  int shift = (shift_value[hmode]+shift_value[vmode])>>1;\
575  int16_t tmp[11*8], *tptr = tmp;\
576 \
577  r = (1<<(shift-1)) + rnd-1;\
578 \
579  src -= 1;\
580  for(j = 0; j < 8; j++) {\
581  for(i = 0; i < 11; i++)\
582  tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\
583  src += stride;\
584  tptr += 11;\
585  }\
586 \
587  r = 64-rnd;\
588  tptr = tmp+1;\
589  for(j = 0; j < 8; j++) {\
590  for(i = 0; i < 8; i++)\
591  OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\
592  dst += stride;\
593  tptr += 11;\
594  }\
595 \
596  return;\
597  }\
598  else { /* No horizontal filter, output 8 lines to dst */\
599  r = 1-rnd;\
600 \
601  for(j = 0; j < 8; j++) {\
602  for(i = 0; i < 8; i++)\
603  OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\
604  src += stride;\
605  dst += stride;\
606  }\
607  return;\
608  }\
609  }\
610 \
611  /* Horizontal mode with no vertical mode */\
612  for(j = 0; j < 8; j++) {\
613  for(i = 0; i < 8; i++)\
614  OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\
615  dst += stride;\
616  src += stride;\
617  }\
618 }
619 
620 #define op_put(a, b) a = av_clip_uint8(b)
621 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
622 
623 VC1_MSPEL_MC(op_put, put_)
624 VC1_MSPEL_MC(op_avg, avg_)
625 
626 /* pixel functions - really are entry points to vc1_mspel_mc */
627 
628 #define PUT_VC1_MSPEL(a, b)\
629 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
630  put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
631 }\
632 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
633  avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
634 }
635 
636 PUT_VC1_MSPEL(1, 0)
637 PUT_VC1_MSPEL(2, 0)
638 PUT_VC1_MSPEL(3, 0)
639 
640 PUT_VC1_MSPEL(0, 1)
641 PUT_VC1_MSPEL(1, 1)
642 PUT_VC1_MSPEL(2, 1)
643 PUT_VC1_MSPEL(3, 1)
644 
645 PUT_VC1_MSPEL(0, 2)
646 PUT_VC1_MSPEL(1, 2)
647 PUT_VC1_MSPEL(2, 2)
648 PUT_VC1_MSPEL(3, 2)
649 
650 PUT_VC1_MSPEL(0, 3)
651 PUT_VC1_MSPEL(1, 3)
652 PUT_VC1_MSPEL(2, 3)
653 PUT_VC1_MSPEL(3, 3)
654 
655 static void put_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){
656  const int A=(8-x)*(8-y);
657  const int B=( x)*(8-y);
658  const int C=(8-x)*( y);
659  const int D=( x)*( y);
660  int i;
661 
662  assert(x<8 && y<8 && x>=0 && y>=0);
663 
664  for(i=0; i<h; i++)
665  {
666  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
667  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
668  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
669  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
670  dst[4] = (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6;
671  dst[5] = (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6;
672  dst[6] = (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6;
673  dst[7] = (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6;
674  dst+= stride;
675  src+= stride;
676  }
677 }
678 
679 static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y){
680  const int A=(8-x)*(8-y);
681  const int B=( x)*(8-y);
682  const int C=(8-x)*( y);
683  const int D=( x)*( y);
684  int i;
685 
686  assert(x<8 && y<8 && x>=0 && y>=0);
687 
688  for(i=0; i<h; i++)
689  {
690  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
691  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
692  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
693  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
694  dst+= stride;
695  src+= stride;
696  }
697 }
698 
699 #define avg2(a,b) ((a+b+1)>>1)
700 static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){
701  const int A=(8-x)*(8-y);
702  const int B=( x)*(8-y);
703  const int C=(8-x)*( y);
704  const int D=( x)*( y);
705  int i;
706 
707  assert(x<8 && y<8 && x>=0 && y>=0);
708 
709  for(i=0; i<h; i++)
710  {
711  dst[0] = avg2(dst[0], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));
712  dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));
713  dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));
714  dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));
715  dst[4] = avg2(dst[4], ((A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6));
716  dst[5] = avg2(dst[5], ((A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6));
717  dst[6] = avg2(dst[6], ((A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6));
718  dst[7] = avg2(dst[7], ((A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6));
719  dst+= stride;
720  src+= stride;
721  }
722 }
723 
724 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
725 
726 static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
727 {
728  while (count--) {
729  int a = src[(offset >> 16) ];
730  int b = src[(offset >> 16) + 1];
731  *dst++ = a + ((b - a) * (offset&0xFFFF) >> 16);
732  offset += advance;
733  }
734 }
735 
736 static av_always_inline void sprite_v_template(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
737  int two_sprites, const uint8_t *src2a, const uint8_t *src2b, int offset2,
738  int alpha, int scaled, int width)
739 {
740  int a1, b1, a2, b2;
741  while (width--) {
742  a1 = *src1a++;
743  if (scaled) {
744  b1 = *src1b++;
745  a1 = a1 + ((b1 - a1) * offset1 >> 16);
746  }
747  if (two_sprites) {
748  a2 = *src2a++;
749  if (scaled > 1) {
750  b2 = *src2b++;
751  a2 = a2 + ((b2 - a2) * offset2 >> 16);
752  }
753  a1 = a1 + ((a2 - a1) * alpha >> 16);
754  }
755  *dst++ = a1;
756  }
757 }
758 
759 static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
760 {
761  sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);
762 }
763 
764 static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
765 {
766  sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);
767 }
768 
769 static void sprite_v_double_onescale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
770  const uint8_t *src2a, int alpha, int width)
771 {
772  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1, width);
773 }
774 
775 static void sprite_v_double_twoscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
776  const uint8_t *src2a, const uint8_t *src2b, int offset2,
777  int alpha, int width)
778 {
779  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2, alpha, 2, width);
780 }
781 
782 #endif
783 
803 
805  dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
806  dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
807  dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
808  dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
809  dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
810  dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
811  dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
812  dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
813  dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
814  dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
815  dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
816  dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
817  dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
818  dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
819  dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
820 
822  dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;
823  dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;
824  dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;
825  dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;
826  dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;
827  dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;
828  dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;
829  dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;
830  dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;
831  dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;
832  dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;
833  dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;
834  dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;
835  dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;
836  dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;
837 
841 
842 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
843  dsp->sprite_h = sprite_h_c;
844  dsp->sprite_v_single = sprite_v_single_c;
845  dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;
846  dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;
847  dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
848 #endif
849 
850  if (HAVE_ALTIVEC)
852  if (ARCH_X86)
853  ff_vc1dsp_init_x86(dsp);
854 }