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 
30 
33 static void vc1_v_overlap_c(uint8_t* src, int stride)
34 {
35  int i;
36  int a, b, c, d;
37  int d1, d2;
38  int rnd = 1;
39  for(i = 0; i < 8; i++) {
40  a = src[-2*stride];
41  b = src[-stride];
42  c = src[0];
43  d = src[stride];
44  d1 = (a - d + 3 + rnd) >> 3;
45  d2 = (a - d + b - c + 4 - rnd) >> 3;
46 
47  src[-2*stride] = a - d1;
48  src[-stride] = av_clip_uint8(b - d2);
49  src[0] = av_clip_uint8(c + d2);
50  src[stride] = d + d1;
51  src++;
52  rnd = !rnd;
53  }
54 }
55 
58 static void vc1_h_overlap_c(uint8_t* src, int stride)
59 {
60  int i;
61  int a, b, c, d;
62  int d1, d2;
63  int rnd = 1;
64  for(i = 0; i < 8; i++) {
65  a = src[-2];
66  b = src[-1];
67  c = src[0];
68  d = src[1];
69  d1 = (a - d + 3 + rnd) >> 3;
70  d2 = (a - d + b - c + 4 - rnd) >> 3;
71 
72  src[-2] = a - d1;
73  src[-1] = av_clip_uint8(b - d2);
74  src[0] = av_clip_uint8(c + d2);
75  src[1] = d + d1;
76  src += stride;
77  rnd = !rnd;
78  }
79 }
80 
81 static void vc1_v_s_overlap_c(DCTELEM *top, DCTELEM *bottom)
82 {
83  int i;
84  int a, b, c, d;
85  int d1, d2;
86  int rnd1 = 4, rnd2 = 3;
87  for(i = 0; i < 8; i++) {
88  a = top[48];
89  b = top[56];
90  c = bottom[0];
91  d = bottom[8];
92  d1 = a - d;
93  d2 = a - d + b - c;
94 
95  top[48] = ((a << 3) - d1 + rnd1) >> 3;
96  top[56] = ((b << 3) - d2 + rnd2) >> 3;
97  bottom[0] = ((c << 3) + d2 + rnd1) >> 3;
98  bottom[8] = ((d << 3) + d1 + rnd2) >> 3;
99 
100  bottom++;
101  top++;
102  rnd2 = 7 - rnd2;
103  rnd1 = 7 - rnd1;
104  }
105 }
106 
107 static void vc1_h_s_overlap_c(DCTELEM *left, DCTELEM *right)
108 {
109  int i;
110  int a, b, c, d;
111  int d1, d2;
112  int rnd1 = 4, rnd2 = 3;
113  for(i = 0; i < 8; i++) {
114  a = left[6];
115  b = left[7];
116  c = right[0];
117  d = right[1];
118  d1 = a - d;
119  d2 = a - d + b - c;
120 
121  left[6] = ((a << 3) - d1 + rnd1) >> 3;
122  left[7] = ((b << 3) - d2 + rnd2) >> 3;
123  right[0] = ((c << 3) + d2 + rnd1) >> 3;
124  right[1] = ((d << 3) + d1 + rnd2) >> 3;
125 
126  right += 8;
127  left += 8;
128  rnd2 = 7 - rnd2;
129  rnd1 = 7 - rnd1;
130  }
131 }
132 
141 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){
142  int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;
143  int a0_sign = a0 >> 31; /* Store sign */
144  a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
145  if(a0 < pq){
146  int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);
147  int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);
148  if(a1 < a0 || a2 < a0){
149  int clip = src[-1*stride] - src[ 0*stride];
150  int clip_sign = clip >> 31;
151  clip = ((clip ^ clip_sign) - clip_sign)>>1;
152  if(clip){
153  int a3 = FFMIN(a1, a2);
154  int d = 5 * (a3 - a0);
155  int d_sign = (d >> 31);
156  d = ((d ^ d_sign) - d_sign) >> 3;
157  d_sign ^= a0_sign;
158 
159  if( d_sign ^ clip_sign )
160  d = 0;
161  else{
162  d = FFMIN(d, clip);
163  d = (d ^ d_sign) - d_sign; /* Restore sign */
164  src[-1*stride] = av_clip_uint8(src[-1*stride] - d);
165  src[ 0*stride] = av_clip_uint8(src[ 0*stride] + d);
166  }
167  return 1;
168  }
169  }
170  }
171  return 0;
172 }
173 
183 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)
184 {
185  int i;
186  int filt3;
187 
188  for(i = 0; i < len; i += 4){
189  filt3 = vc1_filter_line(src + 2*step, stride, pq);
190  if(filt3){
191  vc1_filter_line(src + 0*step, stride, pq);
192  vc1_filter_line(src + 1*step, stride, pq);
193  vc1_filter_line(src + 3*step, stride, pq);
194  }
195  src += step * 4;
196  }
197 }
198 
199 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
200 {
201  vc1_loop_filter(src, 1, stride, 4, pq);
202 }
203 
204 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
205 {
206  vc1_loop_filter(src, stride, 1, 4, pq);
207 }
208 
209 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
210 {
211  vc1_loop_filter(src, 1, stride, 8, pq);
212 }
213 
214 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
215 {
216  vc1_loop_filter(src, stride, 1, 8, pq);
217 }
218 
219 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
220 {
221  vc1_loop_filter(src, 1, stride, 16, pq);
222 }
223 
224 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
225 {
226  vc1_loop_filter(src, stride, 1, 16, pq);
227 }
228 
231 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
232 {
233  int i;
234  int dc = block[0];
235  dc = (3 * dc + 1) >> 1;
236  dc = (3 * dc + 16) >> 5;
237  for(i = 0; i < 8; i++){
238  dest[0] = av_clip_uint8(dest[0] + dc);
239  dest[1] = av_clip_uint8(dest[1] + dc);
240  dest[2] = av_clip_uint8(dest[2] + dc);
241  dest[3] = av_clip_uint8(dest[3] + dc);
242  dest[4] = av_clip_uint8(dest[4] + dc);
243  dest[5] = av_clip_uint8(dest[5] + dc);
244  dest[6] = av_clip_uint8(dest[6] + dc);
245  dest[7] = av_clip_uint8(dest[7] + dc);
246  dest += linesize;
247  }
248 }
249 
251 {
252  int i;
253  register int t1,t2,t3,t4,t5,t6,t7,t8;
254  DCTELEM *src, *dst, temp[64];
255 
256  src = block;
257  dst = temp;
258  for(i = 0; i < 8; i++){
259  t1 = 12 * (src[ 0] + src[32]) + 4;
260  t2 = 12 * (src[ 0] - src[32]) + 4;
261  t3 = 16 * src[16] + 6 * src[48];
262  t4 = 6 * src[16] - 16 * src[48];
263 
264  t5 = t1 + t3;
265  t6 = t2 + t4;
266  t7 = t2 - t4;
267  t8 = t1 - t3;
268 
269  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
270  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
271  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
272  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
273 
274  dst[0] = (t5 + t1) >> 3;
275  dst[1] = (t6 + t2) >> 3;
276  dst[2] = (t7 + t3) >> 3;
277  dst[3] = (t8 + t4) >> 3;
278  dst[4] = (t8 - t4) >> 3;
279  dst[5] = (t7 - t3) >> 3;
280  dst[6] = (t6 - t2) >> 3;
281  dst[7] = (t5 - t1) >> 3;
282 
283  src += 1;
284  dst += 8;
285  }
286 
287  src = temp;
288  dst = block;
289  for(i = 0; i < 8; i++){
290  t1 = 12 * (src[ 0] + src[32]) + 64;
291  t2 = 12 * (src[ 0] - src[32]) + 64;
292  t3 = 16 * src[16] + 6 * src[48];
293  t4 = 6 * src[16] - 16 * src[48];
294 
295  t5 = t1 + t3;
296  t6 = t2 + t4;
297  t7 = t2 - t4;
298  t8 = t1 - t3;
299 
300  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
301  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
302  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
303  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
304 
305  dst[ 0] = (t5 + t1) >> 7;
306  dst[ 8] = (t6 + t2) >> 7;
307  dst[16] = (t7 + t3) >> 7;
308  dst[24] = (t8 + t4) >> 7;
309  dst[32] = (t8 - t4 + 1) >> 7;
310  dst[40] = (t7 - t3 + 1) >> 7;
311  dst[48] = (t6 - t2 + 1) >> 7;
312  dst[56] = (t5 - t1 + 1) >> 7;
313 
314  src++;
315  dst++;
316  }
317 }
318 
321 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
322 {
323  int i;
324  int dc = block[0];
325  dc = ( 3 * dc + 1) >> 1;
326  dc = (17 * dc + 64) >> 7;
327  for(i = 0; i < 4; i++){
328  dest[0] = av_clip_uint8(dest[0] + dc);
329  dest[1] = av_clip_uint8(dest[1] + dc);
330  dest[2] = av_clip_uint8(dest[2] + dc);
331  dest[3] = av_clip_uint8(dest[3] + dc);
332  dest[4] = av_clip_uint8(dest[4] + dc);
333  dest[5] = av_clip_uint8(dest[5] + dc);
334  dest[6] = av_clip_uint8(dest[6] + dc);
335  dest[7] = av_clip_uint8(dest[7] + dc);
336  dest += linesize;
337  }
338 }
339 
340 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
341 {
342  int i;
343  register int t1,t2,t3,t4,t5,t6,t7,t8;
344  DCTELEM *src, *dst;
345 
346  src = block;
347  dst = block;
348  for(i = 0; i < 4; i++){
349  t1 = 12 * (src[0] + src[4]) + 4;
350  t2 = 12 * (src[0] - src[4]) + 4;
351  t3 = 16 * src[2] + 6 * src[6];
352  t4 = 6 * src[2] - 16 * src[6];
353 
354  t5 = t1 + t3;
355  t6 = t2 + t4;
356  t7 = t2 - t4;
357  t8 = t1 - t3;
358 
359  t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
360  t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
361  t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
362  t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
363 
364  dst[0] = (t5 + t1) >> 3;
365  dst[1] = (t6 + t2) >> 3;
366  dst[2] = (t7 + t3) >> 3;
367  dst[3] = (t8 + t4) >> 3;
368  dst[4] = (t8 - t4) >> 3;
369  dst[5] = (t7 - t3) >> 3;
370  dst[6] = (t6 - t2) >> 3;
371  dst[7] = (t5 - t1) >> 3;
372 
373  src += 8;
374  dst += 8;
375  }
376 
377  src = block;
378  for(i = 0; i < 8; i++){
379  t1 = 17 * (src[ 0] + src[16]) + 64;
380  t2 = 17 * (src[ 0] - src[16]) + 64;
381  t3 = 22 * src[ 8] + 10 * src[24];
382  t4 = 22 * src[24] - 10 * src[ 8];
383 
384  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
385  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
386  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
387  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
388 
389  src ++;
390  dest++;
391  }
392 }
393 
396 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
397 {
398  int i;
399  int dc = block[0];
400  dc = (17 * dc + 4) >> 3;
401  dc = (12 * dc + 64) >> 7;
402  for(i = 0; i < 8; i++){
403  dest[0] = av_clip_uint8(dest[0] + dc);
404  dest[1] = av_clip_uint8(dest[1] + dc);
405  dest[2] = av_clip_uint8(dest[2] + dc);
406  dest[3] = av_clip_uint8(dest[3] + dc);
407  dest += linesize;
408  }
409 }
410 
411 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
412 {
413  int i;
414  register int t1,t2,t3,t4,t5,t6,t7,t8;
415  DCTELEM *src, *dst;
416 
417  src = block;
418  dst = block;
419  for(i = 0; i < 8; i++){
420  t1 = 17 * (src[0] + src[2]) + 4;
421  t2 = 17 * (src[0] - src[2]) + 4;
422  t3 = 22 * src[1] + 10 * src[3];
423  t4 = 22 * src[3] - 10 * src[1];
424 
425  dst[0] = (t1 + t3) >> 3;
426  dst[1] = (t2 - t4) >> 3;
427  dst[2] = (t2 + t4) >> 3;
428  dst[3] = (t1 - t3) >> 3;
429 
430  src += 8;
431  dst += 8;
432  }
433 
434  src = block;
435  for(i = 0; i < 4; i++){
436  t1 = 12 * (src[ 0] + src[32]) + 64;
437  t2 = 12 * (src[ 0] - src[32]) + 64;
438  t3 = 16 * src[16] + 6 * src[48];
439  t4 = 6 * src[16] - 16 * src[48];
440 
441  t5 = t1 + t3;
442  t6 = t2 + t4;
443  t7 = t2 - t4;
444  t8 = t1 - t3;
445 
446  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
447  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
448  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
449  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
450 
451  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t5 + t1) >> 7));
452  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t6 + t2) >> 7));
453  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t7 + t3) >> 7));
454  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t8 + t4) >> 7));
455  dest[4*linesize] = av_clip_uint8(dest[4*linesize] + ((t8 - t4 + 1) >> 7));
456  dest[5*linesize] = av_clip_uint8(dest[5*linesize] + ((t7 - t3 + 1) >> 7));
457  dest[6*linesize] = av_clip_uint8(dest[6*linesize] + ((t6 - t2 + 1) >> 7));
458  dest[7*linesize] = av_clip_uint8(dest[7*linesize] + ((t5 - t1 + 1) >> 7));
459 
460  src ++;
461  dest++;
462  }
463 }
464 
467 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
468 {
469  int i;
470  int dc = block[0];
471  dc = (17 * dc + 4) >> 3;
472  dc = (17 * dc + 64) >> 7;
473  for(i = 0; i < 4; i++){
474  dest[0] = av_clip_uint8(dest[0] + dc);
475  dest[1] = av_clip_uint8(dest[1] + dc);
476  dest[2] = av_clip_uint8(dest[2] + dc);
477  dest[3] = av_clip_uint8(dest[3] + dc);
478  dest += linesize;
479  }
480 }
481 
482 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
483 {
484  int i;
485  register int t1,t2,t3,t4;
486  DCTELEM *src, *dst;
487 
488  src = block;
489  dst = block;
490  for(i = 0; i < 4; i++){
491  t1 = 17 * (src[0] + src[2]) + 4;
492  t2 = 17 * (src[0] - src[2]) + 4;
493  t3 = 22 * src[1] + 10 * src[3];
494  t4 = 22 * src[3] - 10 * src[1];
495 
496  dst[0] = (t1 + t3) >> 3;
497  dst[1] = (t2 - t4) >> 3;
498  dst[2] = (t2 + t4) >> 3;
499  dst[3] = (t1 - t3) >> 3;
500 
501  src += 8;
502  dst += 8;
503  }
504 
505  src = block;
506  for(i = 0; i < 4; i++){
507  t1 = 17 * (src[ 0] + src[16]) + 64;
508  t2 = 17 * (src[ 0] - src[16]) + 64;
509  t3 = 22 * src[ 8] + 10 * src[24];
510  t4 = 22 * src[24] - 10 * src[ 8];
511 
512  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
513  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
514  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
515  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
516 
517  src ++;
518  dest++;
519  }
520 }
521 
522 /* motion compensation functions */
524 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
525 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
526 { \
527  switch(mode){ \
528  case 0: /* no shift - should not occur */ \
529  return 0; \
530  case 1: /* 1/4 shift */ \
531  return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
532  case 2: /* 1/2 shift */ \
533  return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
534  case 3: /* 3/4 shift */ \
535  return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
536  } \
537  return 0; /* should not occur */ \
538 }
539 
540 VC1_MSPEL_FILTER_16B(ver, uint8_t)
541 VC1_MSPEL_FILTER_16B(hor, int16_t)
542 
543 
546 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
547 {
548  switch(mode){
549  case 0: //no shift
550  return src[0];
551  case 1: // 1/4 shift
552  return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
553  case 2: // 1/2 shift
554  return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
555  case 3: // 3/4 shift
556  return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
557  }
558  return 0; //should not occur
559 }
560 
563 #define VC1_MSPEL_MC(OP, OPNAME)\
564 static void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)\
565 {\
566  int i, j;\
567 \
568  if (vmode) { /* Horizontal filter to apply */\
569  int r;\
570 \
571  if (hmode) { /* Vertical filter to apply, output to tmp */\
572  static const int shift_value[] = { 0, 5, 1, 5 };\
573  int shift = (shift_value[hmode]+shift_value[vmode])>>1;\
574  int16_t tmp[11*8], *tptr = tmp;\
575 \
576  r = (1<<(shift-1)) + rnd-1;\
577 \
578  src -= 1;\
579  for(j = 0; j < 8; j++) {\
580  for(i = 0; i < 11; i++)\
581  tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\
582  src += stride;\
583  tptr += 11;\
584  }\
585 \
586  r = 64-rnd;\
587  tptr = tmp+1;\
588  for(j = 0; j < 8; j++) {\
589  for(i = 0; i < 8; i++)\
590  OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\
591  dst += stride;\
592  tptr += 11;\
593  }\
594 \
595  return;\
596  }\
597  else { /* No horizontal filter, output 8 lines to dst */\
598  r = 1-rnd;\
599 \
600  for(j = 0; j < 8; j++) {\
601  for(i = 0; i < 8; i++)\
602  OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\
603  src += stride;\
604  dst += stride;\
605  }\
606  return;\
607  }\
608  }\
609 \
610  /* Horizontal mode with no vertical mode */\
611  for(j = 0; j < 8; j++) {\
612  for(i = 0; i < 8; i++)\
613  OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\
614  dst += stride;\
615  src += stride;\
616  }\
617 }
618 
619 #define op_put(a, b) a = av_clip_uint8(b)
620 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
621 
622 VC1_MSPEL_MC(op_put, put_)
623 VC1_MSPEL_MC(op_avg, avg_)
624 
625 /* pixel functions - really are entry points to vc1_mspel_mc */
626 
627 #define PUT_VC1_MSPEL(a, b)\
628 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
629  put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
630 }\
631 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
632  avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
633 }
634 
635 PUT_VC1_MSPEL(1, 0)
636 PUT_VC1_MSPEL(2, 0)
637 PUT_VC1_MSPEL(3, 0)
638 
639 PUT_VC1_MSPEL(0, 1)
640 PUT_VC1_MSPEL(1, 1)
641 PUT_VC1_MSPEL(2, 1)
642 PUT_VC1_MSPEL(3, 1)
643 
644 PUT_VC1_MSPEL(0, 2)
645 PUT_VC1_MSPEL(1, 2)
646 PUT_VC1_MSPEL(2, 2)
647 PUT_VC1_MSPEL(3, 2)
648 
649 PUT_VC1_MSPEL(0, 3)
650 PUT_VC1_MSPEL(1, 3)
651 PUT_VC1_MSPEL(2, 3)
652 PUT_VC1_MSPEL(3, 3)
653 
654 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){
655  const int A=(8-x)*(8-y);
656  const int B=( x)*(8-y);
657  const int C=(8-x)*( y);
658  const int D=( x)*( y);
659  int i;
660 
661  assert(x<8 && y<8 && x>=0 && y>=0);
662 
663  for(i=0; i<h; i++)
664  {
665  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
666  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
667  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
668  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
669  dst[4] = (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6;
670  dst[5] = (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6;
671  dst[6] = (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6;
672  dst[7] = (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6;
673  dst+= stride;
674  src+= stride;
675  }
676 }
677 
678 static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y){
679  const int A=(8-x)*(8-y);
680  const int B=( x)*(8-y);
681  const int C=(8-x)*( y);
682  const int D=( x)*( y);
683  int i;
684 
685  assert(x<8 && y<8 && x>=0 && y>=0);
686 
687  for(i=0; i<h; i++)
688  {
689  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
690  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
691  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
692  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
693  dst+= stride;
694  src+= stride;
695  }
696 }
697 
698 #define avg2(a,b) ((a+b+1)>>1)
699 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){
700  const int A=(8-x)*(8-y);
701  const int B=( x)*(8-y);
702  const int C=(8-x)*( y);
703  const int D=( x)*( y);
704  int i;
705 
706  assert(x<8 && y<8 && x>=0 && y>=0);
707 
708  for(i=0; i<h; i++)
709  {
710  dst[0] = avg2(dst[0], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));
711  dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));
712  dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));
713  dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));
714  dst[4] = avg2(dst[4], ((A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6));
715  dst[5] = avg2(dst[5], ((A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6));
716  dst[6] = avg2(dst[6], ((A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6));
717  dst[7] = avg2(dst[7], ((A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6));
718  dst+= stride;
719  src+= stride;
720  }
721 }
722 
723 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
724 
725 static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
726 {
727  while (count--) {
728  int a = src[(offset >> 16) ];
729  int b = src[(offset >> 16) + 1];
730  *dst++ = a + ((b - a) * (offset&0xFFFF) >> 16);
731  offset += advance;
732  }
733 }
734 
735 static av_always_inline void sprite_v_template(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
736  int two_sprites, const uint8_t *src2a, const uint8_t *src2b, int offset2,
737  int alpha, int scaled, int width)
738 {
739  int a1, b1, a2, b2;
740  while (width--) {
741  a1 = *src1a++;
742  if (scaled) {
743  b1 = *src1b++;
744  a1 = a1 + ((b1 - a1) * offset1 >> 16);
745  }
746  if (two_sprites) {
747  a2 = *src2a++;
748  if (scaled > 1) {
749  b2 = *src2b++;
750  a2 = a2 + ((b2 - a2) * offset2 >> 16);
751  }
752  a1 = a1 + ((a2 - a1) * alpha >> 16);
753  }
754  *dst++ = a1;
755  }
756 }
757 
758 static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
759 {
760  sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);
761 }
762 
763 static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
764 {
765  sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);
766 }
767 
768 static void sprite_v_double_onescale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
769  const uint8_t *src2a, int alpha, int width)
770 {
771  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1, width);
772 }
773 
774 static void sprite_v_double_twoscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
775  const uint8_t *src2a, const uint8_t *src2b, int offset2,
776  int alpha, int width)
777 {
778  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2, alpha, 2, width);
779 }
780 
781 #endif
782 
802 
804  dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
805  dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
806  dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
807  dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
808  dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
809  dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
810  dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
811  dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
812  dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
813  dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
814  dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
815  dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
816  dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
817  dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
818  dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
819 
821  dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;
822  dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;
823  dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;
824  dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;
825  dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;
826  dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;
827  dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;
828  dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;
829  dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;
830  dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;
831  dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;
832  dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;
833  dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;
834  dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;
835  dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;
836 
840 
841 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
842  dsp->sprite_h = sprite_h_c;
843  dsp->sprite_v_single = sprite_v_single_c;
844  dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;
845  dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;
846  dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
847 #endif
848 
849  if (HAVE_ALTIVEC)
851  if (HAVE_MMX)
852  ff_vc1dsp_init_mmx(dsp);
853 }