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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 FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 /**
23 * @file
24  * VC-1 and WMV3 decoder
25  *
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/common.h"
30 #include "h264chroma.h"
31 #include "rnd_avg.h"
32 #include "vc1dsp.h"
33 
34 
35 /** Apply overlap transform to horizontal edge
36 */
37 static void vc1_v_overlap_c(uint8_t* src, int stride)
38 {
39  int i;
40  int a, b, c, d;
41  int d1, d2;
42  int rnd = 1;
43  for(i = 0; i < 8; i++) {
44  a = src[-2*stride];
45  b = src[-stride];
46  c = src[0];
47  d = src[stride];
48  d1 = (a - d + 3 + rnd) >> 3;
49  d2 = (a - d + b - c + 4 - rnd) >> 3;
50 
51  src[-2*stride] = a - d1;
52  src[-stride] = av_clip_uint8(b - d2);
53  src[0] = av_clip_uint8(c + d2);
54  src[stride] = d + d1;
55  src++;
56  rnd = !rnd;
57  }
58 }
59 
60 /** Apply overlap transform to vertical edge
61 */
62 static void vc1_h_overlap_c(uint8_t* src, int stride)
63 {
64  int i;
65  int a, b, c, d;
66  int d1, d2;
67  int rnd = 1;
68  for(i = 0; i < 8; i++) {
69  a = src[-2];
70  b = src[-1];
71  c = src[0];
72  d = src[1];
73  d1 = (a - d + 3 + rnd) >> 3;
74  d2 = (a - d + b - c + 4 - rnd) >> 3;
75 
76  src[-2] = a - d1;
77  src[-1] = av_clip_uint8(b - d2);
78  src[0] = av_clip_uint8(c + d2);
79  src[1] = d + d1;
80  src += stride;
81  rnd = !rnd;
82  }
83 }
84 
85 static void vc1_v_s_overlap_c(int16_t *top, int16_t *bottom)
86 {
87  int i;
88  int a, b, c, d;
89  int d1, d2;
90  int rnd1 = 4, rnd2 = 3;
91  for(i = 0; i < 8; i++) {
92  a = top[48];
93  b = top[56];
94  c = bottom[0];
95  d = bottom[8];
96  d1 = a - d;
97  d2 = a - d + b - c;
98 
99  top[48] = ((a << 3) - d1 + rnd1) >> 3;
100  top[56] = ((b << 3) - d2 + rnd2) >> 3;
101  bottom[0] = ((c << 3) + d2 + rnd1) >> 3;
102  bottom[8] = ((d << 3) + d1 + rnd2) >> 3;
103 
104  bottom++;
105  top++;
106  rnd2 = 7 - rnd2;
107  rnd1 = 7 - rnd1;
108  }
109 }
110 
111 static void vc1_h_s_overlap_c(int16_t *left, int16_t *right)
112 {
113  int i;
114  int a, b, c, d;
115  int d1, d2;
116  int rnd1 = 4, rnd2 = 3;
117  for(i = 0; i < 8; i++) {
118  a = left[6];
119  b = left[7];
120  c = right[0];
121  d = right[1];
122  d1 = a - d;
123  d2 = a - d + b - c;
124 
125  left[6] = ((a << 3) - d1 + rnd1) >> 3;
126  left[7] = ((b << 3) - d2 + rnd2) >> 3;
127  right[0] = ((c << 3) + d2 + rnd1) >> 3;
128  right[1] = ((d << 3) + d1 + rnd2) >> 3;
129 
130  right += 8;
131  left += 8;
132  rnd2 = 7 - rnd2;
133  rnd1 = 7 - rnd1;
134  }
135 }
136 
137 /**
138  * VC-1 in-loop deblocking filter for one line
139  * @param src source block type
140  * @param stride block stride
141  * @param pq block quantizer
142  * @return whether other 3 pairs should be filtered or not
143  * @see 8.6
144  */
145 static av_always_inline int vc1_filter_line(uint8_t* src, int stride, int pq){
146  int a0 = (2*(src[-2*stride] - src[ 1*stride]) - 5*(src[-1*stride] - src[ 0*stride]) + 4) >> 3;
147  int a0_sign = a0 >> 31; /* Store sign */
148  a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
149  if(a0 < pq){
150  int a1 = FFABS((2*(src[-4*stride] - src[-1*stride]) - 5*(src[-3*stride] - src[-2*stride]) + 4) >> 3);
151  int a2 = FFABS((2*(src[ 0*stride] - src[ 3*stride]) - 5*(src[ 1*stride] - src[ 2*stride]) + 4) >> 3);
152  if(a1 < a0 || a2 < a0){
153  int clip = src[-1*stride] - src[ 0*stride];
154  int clip_sign = clip >> 31;
155  clip = ((clip ^ clip_sign) - clip_sign)>>1;
156  if(clip){
157  int a3 = FFMIN(a1, a2);
158  int d = 5 * (a3 - a0);
159  int d_sign = (d >> 31);
160  d = ((d ^ d_sign) - d_sign) >> 3;
161  d_sign ^= a0_sign;
162 
163  if( d_sign ^ clip_sign )
164  d = 0;
165  else{
166  d = FFMIN(d, clip);
167  d = (d ^ d_sign) - d_sign; /* Restore sign */
168  src[-1*stride] = av_clip_uint8(src[-1*stride] - d);
169  src[ 0*stride] = av_clip_uint8(src[ 0*stride] + d);
170  }
171  return 1;
172  }
173  }
174  }
175  return 0;
176 }
177 
178 /**
179  * VC-1 in-loop deblocking filter
180  * @param src source block type
181  * @param step distance between horizontally adjacent elements
182  * @param stride distance between vertically adjacent elements
183  * @param len edge length to filter (4 or 8 pixels)
184  * @param pq block quantizer
185  * @see 8.6
186  */
187 static inline void vc1_loop_filter(uint8_t* src, int step, int stride, int len, int pq)
188 {
189  int i;
190  int filt3;
191 
192  for(i = 0; i < len; i += 4){
193  filt3 = vc1_filter_line(src + 2*step, stride, pq);
194  if(filt3){
195  vc1_filter_line(src + 0*step, stride, pq);
196  vc1_filter_line(src + 1*step, stride, pq);
197  vc1_filter_line(src + 3*step, stride, pq);
198  }
199  src += step * 4;
200  }
201 }
202 
203 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
204 {
205  vc1_loop_filter(src, 1, stride, 4, pq);
206 }
207 
208 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
209 {
210  vc1_loop_filter(src, stride, 1, 4, pq);
211 }
212 
213 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
214 {
215  vc1_loop_filter(src, 1, stride, 8, pq);
216 }
217 
218 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
219 {
220  vc1_loop_filter(src, stride, 1, 8, pq);
221 }
222 
223 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
224 {
225  vc1_loop_filter(src, 1, stride, 16, pq);
226 }
227 
228 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
229 {
230  vc1_loop_filter(src, stride, 1, 16, pq);
231 }
232 
233 /** Do inverse transform on 8x8 block
234 */
235 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, int16_t *block)
236 {
237  int i;
238  int dc = block[0];
239  dc = (3 * dc + 1) >> 1;
240  dc = (3 * dc + 16) >> 5;
241  for(i = 0; i < 8; i++){
242  dest[0] = av_clip_uint8(dest[0] + dc);
243  dest[1] = av_clip_uint8(dest[1] + dc);
244  dest[2] = av_clip_uint8(dest[2] + dc);
245  dest[3] = av_clip_uint8(dest[3] + dc);
246  dest[4] = av_clip_uint8(dest[4] + dc);
247  dest[5] = av_clip_uint8(dest[5] + dc);
248  dest[6] = av_clip_uint8(dest[6] + dc);
249  dest[7] = av_clip_uint8(dest[7] + dc);
250  dest += linesize;
251  }
252 }
253 
254 static void vc1_inv_trans_8x8_c(int16_t block[64])
255 {
256  int i;
257  register int t1,t2,t3,t4,t5,t6,t7,t8;
258  int16_t *src, *dst, temp[64];
259 
260  src = block;
261  dst = temp;
262  for(i = 0; i < 8; i++){
263  t1 = 12 * (src[ 0] + src[32]) + 4;
264  t2 = 12 * (src[ 0] - src[32]) + 4;
265  t3 = 16 * src[16] + 6 * src[48];
266  t4 = 6 * src[16] - 16 * src[48];
267 
268  t5 = t1 + t3;
269  t6 = t2 + t4;
270  t7 = t2 - t4;
271  t8 = t1 - t3;
272 
273  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
274  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
275  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
276  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
277 
278  dst[0] = (t5 + t1) >> 3;
279  dst[1] = (t6 + t2) >> 3;
280  dst[2] = (t7 + t3) >> 3;
281  dst[3] = (t8 + t4) >> 3;
282  dst[4] = (t8 - t4) >> 3;
283  dst[5] = (t7 - t3) >> 3;
284  dst[6] = (t6 - t2) >> 3;
285  dst[7] = (t5 - t1) >> 3;
286 
287  src += 1;
288  dst += 8;
289  }
290 
291  src = temp;
292  dst = block;
293  for(i = 0; i < 8; i++){
294  t1 = 12 * (src[ 0] + src[32]) + 64;
295  t2 = 12 * (src[ 0] - src[32]) + 64;
296  t3 = 16 * src[16] + 6 * src[48];
297  t4 = 6 * src[16] - 16 * src[48];
298 
299  t5 = t1 + t3;
300  t6 = t2 + t4;
301  t7 = t2 - t4;
302  t8 = t1 - t3;
303 
304  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
305  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
306  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
307  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
308 
309  dst[ 0] = (t5 + t1) >> 7;
310  dst[ 8] = (t6 + t2) >> 7;
311  dst[16] = (t7 + t3) >> 7;
312  dst[24] = (t8 + t4) >> 7;
313  dst[32] = (t8 - t4 + 1) >> 7;
314  dst[40] = (t7 - t3 + 1) >> 7;
315  dst[48] = (t6 - t2 + 1) >> 7;
316  dst[56] = (t5 - t1 + 1) >> 7;
317 
318  src++;
319  dst++;
320  }
321 }
322 
323 /** Do inverse transform on 8x4 part of block
324 */
325 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, int16_t *block)
326 {
327  int i;
328  int dc = block[0];
329  dc = ( 3 * dc + 1) >> 1;
330  dc = (17 * dc + 64) >> 7;
331  for(i = 0; i < 4; i++){
332  dest[0] = av_clip_uint8(dest[0] + dc);
333  dest[1] = av_clip_uint8(dest[1] + dc);
334  dest[2] = av_clip_uint8(dest[2] + dc);
335  dest[3] = av_clip_uint8(dest[3] + dc);
336  dest[4] = av_clip_uint8(dest[4] + dc);
337  dest[5] = av_clip_uint8(dest[5] + dc);
338  dest[6] = av_clip_uint8(dest[6] + dc);
339  dest[7] = av_clip_uint8(dest[7] + dc);
340  dest += linesize;
341  }
342 }
343 
344 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, int16_t *block)
345 {
346  int i;
347  register int t1,t2,t3,t4,t5,t6,t7,t8;
348  int16_t *src, *dst;
349 
350  src = block;
351  dst = block;
352  for(i = 0; i < 4; i++){
353  t1 = 12 * (src[0] + src[4]) + 4;
354  t2 = 12 * (src[0] - src[4]) + 4;
355  t3 = 16 * src[2] + 6 * src[6];
356  t4 = 6 * src[2] - 16 * src[6];
357 
358  t5 = t1 + t3;
359  t6 = t2 + t4;
360  t7 = t2 - t4;
361  t8 = t1 - t3;
362 
363  t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
364  t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
365  t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
366  t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
367 
368  dst[0] = (t5 + t1) >> 3;
369  dst[1] = (t6 + t2) >> 3;
370  dst[2] = (t7 + t3) >> 3;
371  dst[3] = (t8 + t4) >> 3;
372  dst[4] = (t8 - t4) >> 3;
373  dst[5] = (t7 - t3) >> 3;
374  dst[6] = (t6 - t2) >> 3;
375  dst[7] = (t5 - t1) >> 3;
376 
377  src += 8;
378  dst += 8;
379  }
380 
381  src = block;
382  for(i = 0; i < 8; i++){
383  t1 = 17 * (src[ 0] + src[16]) + 64;
384  t2 = 17 * (src[ 0] - src[16]) + 64;
385  t3 = 22 * src[ 8] + 10 * src[24];
386  t4 = 22 * src[24] - 10 * src[ 8];
387 
388  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
389  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
390  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
391  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
392 
393  src ++;
394  dest++;
395  }
396 }
397 
398 /** Do inverse transform on 4x8 parts of block
399 */
400 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, int16_t *block)
401 {
402  int i;
403  int dc = block[0];
404  dc = (17 * dc + 4) >> 3;
405  dc = (12 * dc + 64) >> 7;
406  for(i = 0; i < 8; i++){
407  dest[0] = av_clip_uint8(dest[0] + dc);
408  dest[1] = av_clip_uint8(dest[1] + dc);
409  dest[2] = av_clip_uint8(dest[2] + dc);
410  dest[3] = av_clip_uint8(dest[3] + dc);
411  dest += linesize;
412  }
413 }
414 
415 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, int16_t *block)
416 {
417  int i;
418  register int t1,t2,t3,t4,t5,t6,t7,t8;
419  int16_t *src, *dst;
420 
421  src = block;
422  dst = block;
423  for(i = 0; i < 8; i++){
424  t1 = 17 * (src[0] + src[2]) + 4;
425  t2 = 17 * (src[0] - src[2]) + 4;
426  t3 = 22 * src[1] + 10 * src[3];
427  t4 = 22 * src[3] - 10 * src[1];
428 
429  dst[0] = (t1 + t3) >> 3;
430  dst[1] = (t2 - t4) >> 3;
431  dst[2] = (t2 + t4) >> 3;
432  dst[3] = (t1 - t3) >> 3;
433 
434  src += 8;
435  dst += 8;
436  }
437 
438  src = block;
439  for(i = 0; i < 4; i++){
440  t1 = 12 * (src[ 0] + src[32]) + 64;
441  t2 = 12 * (src[ 0] - src[32]) + 64;
442  t3 = 16 * src[16] + 6 * src[48];
443  t4 = 6 * src[16] - 16 * src[48];
444 
445  t5 = t1 + t3;
446  t6 = t2 + t4;
447  t7 = t2 - t4;
448  t8 = t1 - t3;
449 
450  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
451  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
452  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
453  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
454 
455  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t5 + t1) >> 7));
456  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t6 + t2) >> 7));
457  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t7 + t3) >> 7));
458  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t8 + t4) >> 7));
459  dest[4*linesize] = av_clip_uint8(dest[4*linesize] + ((t8 - t4 + 1) >> 7));
460  dest[5*linesize] = av_clip_uint8(dest[5*linesize] + ((t7 - t3 + 1) >> 7));
461  dest[6*linesize] = av_clip_uint8(dest[6*linesize] + ((t6 - t2 + 1) >> 7));
462  dest[7*linesize] = av_clip_uint8(dest[7*linesize] + ((t5 - t1 + 1) >> 7));
463 
464  src ++;
465  dest++;
466  }
467 }
468 
469 /** Do inverse transform on 4x4 part of block
470 */
471 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, int16_t *block)
472 {
473  int i;
474  int dc = block[0];
475  dc = (17 * dc + 4) >> 3;
476  dc = (17 * dc + 64) >> 7;
477  for(i = 0; i < 4; i++){
478  dest[0] = av_clip_uint8(dest[0] + dc);
479  dest[1] = av_clip_uint8(dest[1] + dc);
480  dest[2] = av_clip_uint8(dest[2] + dc);
481  dest[3] = av_clip_uint8(dest[3] + dc);
482  dest += linesize;
483  }
484 }
485 
486 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, int16_t *block)
487 {
488  int i;
489  register int t1,t2,t3,t4;
490  int16_t *src, *dst;
491 
492  src = block;
493  dst = block;
494  for(i = 0; i < 4; i++){
495  t1 = 17 * (src[0] + src[2]) + 4;
496  t2 = 17 * (src[0] - src[2]) + 4;
497  t3 = 22 * src[1] + 10 * src[3];
498  t4 = 22 * src[3] - 10 * src[1];
499 
500  dst[0] = (t1 + t3) >> 3;
501  dst[1] = (t2 - t4) >> 3;
502  dst[2] = (t2 + t4) >> 3;
503  dst[3] = (t1 - t3) >> 3;
504 
505  src += 8;
506  dst += 8;
507  }
508 
509  src = block;
510  for(i = 0; i < 4; i++){
511  t1 = 17 * (src[ 0] + src[16]) + 64;
512  t2 = 17 * (src[ 0] - src[16]) + 64;
513  t3 = 22 * src[ 8] + 10 * src[24];
514  t4 = 22 * src[24] - 10 * src[ 8];
515 
516  dest[0*linesize] = av_clip_uint8(dest[0*linesize] + ((t1 + t3) >> 7));
517  dest[1*linesize] = av_clip_uint8(dest[1*linesize] + ((t2 - t4) >> 7));
518  dest[2*linesize] = av_clip_uint8(dest[2*linesize] + ((t2 + t4) >> 7));
519  dest[3*linesize] = av_clip_uint8(dest[3*linesize] + ((t1 - t3) >> 7));
520 
521  src ++;
522  dest++;
523  }
524 }
525 
526 /* motion compensation functions */
527 /** Filter in case of 2 filters */
528 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
529 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
530 { \
531  switch(mode){ \
532  case 0: /* no shift - should not occur */ \
533  return 0; \
534  case 1: /* 1/4 shift */ \
535  return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
536  case 2: /* 1/2 shift */ \
537  return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
538  case 3: /* 3/4 shift */ \
539  return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
540  } \
541  return 0; /* should not occur */ \
542 }
543 
544 VC1_MSPEL_FILTER_16B(ver, uint8_t)
545 VC1_MSPEL_FILTER_16B(hor, int16_t)
546 
547 
548 /** Filter used to interpolate fractional pel values
549  */
550 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
551 {
552  switch(mode){
553  case 0: //no shift
554  return src[0];
555  case 1: // 1/4 shift
556  return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
557  case 2: // 1/2 shift
558  return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
559  case 3: // 3/4 shift
560  return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
561  }
562  return 0; //should not occur
563 }
564 
565 /** Function used to do motion compensation with bicubic interpolation
566  */
567 #define VC1_MSPEL_MC(OP, OP4, OPNAME)\
568 static av_always_inline void OPNAME ## vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)\
569 {\
570  int i, j;\
571 \
572  if (vmode) { /* Horizontal filter to apply */\
573  int r;\
574 \
575  if (hmode) { /* Vertical filter to apply, output to tmp */\
576  static const int shift_value[] = { 0, 5, 1, 5 };\
577  int shift = (shift_value[hmode]+shift_value[vmode])>>1;\
578  int16_t tmp[11*8], *tptr = tmp;\
579 \
580  r = (1<<(shift-1)) + rnd-1;\
581 \
582  src -= 1;\
583  for(j = 0; j < 8; j++) {\
584  for(i = 0; i < 11; i++)\
585  tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;\
586  src += stride;\
587  tptr += 11;\
588  }\
589 \
590  r = 64-rnd;\
591  tptr = tmp+1;\
592  for(j = 0; j < 8; j++) {\
593  for(i = 0; i < 8; i++)\
594  OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);\
595  dst += stride;\
596  tptr += 11;\
597  }\
598 \
599  return;\
600  }\
601  else { /* No horizontal filter, output 8 lines to dst */\
602  r = 1-rnd;\
603 \
604  for(j = 0; j < 8; j++) {\
605  for(i = 0; i < 8; i++)\
606  OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r));\
607  src += stride;\
608  dst += stride;\
609  }\
610  return;\
611  }\
612  }\
613 \
614  /* Horizontal mode with no vertical mode */\
615  for(j = 0; j < 8; j++) {\
616  for(i = 0; i < 8; i++)\
617  OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd));\
618  dst += stride;\
619  src += stride;\
620  }\
621 }\
622 static void OPNAME ## pixels8x8_c(uint8_t *block, const uint8_t *pixels, int line_size, int rnd){\
623  int i;\
624  for(i=0; i<8; i++){\
625  OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\
626  OP4(*(uint32_t*)(block+4), AV_RN32(pixels+4));\
627  pixels+=line_size;\
628  block +=line_size;\
629  }\
630 }
631 
632 #define op_put(a, b) a = av_clip_uint8(b)
633 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
634 #define op4_avg(a, b) a = rnd_avg32(a, b)
635 #define op4_put(a, b) a = b
636 
637 VC1_MSPEL_MC(op_put, op4_put, put_)
638 VC1_MSPEL_MC(op_avg, op4_avg, avg_)
639 
640 /* pixel functions - really are entry points to vc1_mspel_mc */
641 
642 #define PUT_VC1_MSPEL(a, b)\
643 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
644  put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
645 }\
646 static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
647  avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
648 }
649 
650 PUT_VC1_MSPEL(1, 0)
651 PUT_VC1_MSPEL(2, 0)
652 PUT_VC1_MSPEL(3, 0)
653 
654 PUT_VC1_MSPEL(0, 1)
655 PUT_VC1_MSPEL(1, 1)
656 PUT_VC1_MSPEL(2, 1)
657 PUT_VC1_MSPEL(3, 1)
658 
659 PUT_VC1_MSPEL(0, 2)
660 PUT_VC1_MSPEL(1, 2)
661 PUT_VC1_MSPEL(2, 2)
662 PUT_VC1_MSPEL(3, 2)
663 
664 PUT_VC1_MSPEL(0, 3)
665 PUT_VC1_MSPEL(1, 3)
666 PUT_VC1_MSPEL(2, 3)
667 PUT_VC1_MSPEL(3, 3)
668 
669 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){
670  const int A=(8-x)*(8-y);
671  const int B=( x)*(8-y);
672  const int C=(8-x)*( y);
673  const int D=( x)*( y);
674  int i;
675 
676  av_assert2(x<8 && y<8 && x>=0 && y>=0);
677 
678  for(i=0; i<h; i++)
679  {
680  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
681  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
682  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
683  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
684  dst[4] = (A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6;
685  dst[5] = (A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6;
686  dst[6] = (A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6;
687  dst[7] = (A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6;
688  dst+= stride;
689  src+= stride;
690  }
691 }
692 
693 static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y){
694  const int A=(8-x)*(8-y);
695  const int B=( x)*(8-y);
696  const int C=(8-x)*( y);
697  const int D=( x)*( y);
698  int i;
699 
700  av_assert2(x<8 && y<8 && x>=0 && y>=0);
701 
702  for(i=0; i<h; i++)
703  {
704  dst[0] = (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6;
705  dst[1] = (A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6;
706  dst[2] = (A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6;
707  dst[3] = (A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6;
708  dst+= stride;
709  src+= stride;
710  }
711 }
712 
713 #define avg2(a,b) ((a+b+1)>>1)
714 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){
715  const int A=(8-x)*(8-y);
716  const int B=( x)*(8-y);
717  const int C=(8-x)*( y);
718  const int D=( x)*( y);
719  int i;
720 
721  av_assert2(x<8 && y<8 && x>=0 && y>=0);
722 
723  for(i=0; i<h; i++)
724  {
725  dst[0] = avg2(dst[0], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));
726  dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));
727  dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));
728  dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));
729  dst[4] = avg2(dst[4], ((A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6));
730  dst[5] = avg2(dst[5], ((A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6));
731  dst[6] = avg2(dst[6], ((A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6));
732  dst[7] = avg2(dst[7], ((A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6));
733  dst+= stride;
734  src+= stride;
735  }
736 }
737 
738 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
739 
740 static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, int advance, int count)
741 {
742  while (count--) {
743  int a = src[(offset >> 16) ];
744  int b = src[(offset >> 16) + 1];
745  *dst++ = a + ((b - a) * (offset&0xFFFF) >> 16);
746  offset += advance;
747  }
748 }
749 
750 static av_always_inline void sprite_v_template(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
751  int two_sprites, const uint8_t *src2a, const uint8_t *src2b, int offset2,
752  int alpha, int scaled, int width)
753 {
754  int a1, b1, a2, b2;
755  while (width--) {
756  a1 = *src1a++;
757  if (scaled) {
758  b1 = *src1b++;
759  a1 = a1 + ((b1 - a1) * offset1 >> 16);
760  }
761  if (two_sprites) {
762  a2 = *src2a++;
763  if (scaled > 1) {
764  b2 = *src2b++;
765  a2 = a2 + ((b2 - a2) * offset2 >> 16);
766  }
767  a1 = a1 + ((a2 - a1) * alpha >> 16);
768  }
769  *dst++ = a1;
770  }
771 }
772 
773 static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width)
774 {
775  sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);
776 }
777 
778 static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width)
779 {
780  sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);
781 }
782 
783 static void sprite_v_double_onescale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
784  const uint8_t *src2a, int alpha, int width)
785 {
786  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1, width);
787 }
788 
789 static void sprite_v_double_twoscale_c(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
790  const uint8_t *src2a, const uint8_t *src2b, int offset2,
791  int alpha, int width)
792 {
793  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2, alpha, 2, width);
794 }
795 
796 #endif
797 
798 av_cold void ff_vc1dsp_init(VC1DSPContext* dsp) {
799  dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
800  dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
801  dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
802  dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
803  dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;
804  dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;
805  dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;
806  dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;
807  dsp->vc1_h_overlap = vc1_h_overlap_c;
808  dsp->vc1_v_overlap = vc1_v_overlap_c;
809  dsp->vc1_h_s_overlap = vc1_h_s_overlap_c;
810  dsp->vc1_v_s_overlap = vc1_v_s_overlap_c;
811  dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;
812  dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;
813  dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;
814  dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;
815  dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;
816  dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;
817 
818  dsp->put_vc1_mspel_pixels_tab[ 0] = put_pixels8x8_c;
819  dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
820  dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
821  dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
822  dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
823  dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
824  dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
825  dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
826  dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
827  dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
828  dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
829  dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
830  dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
831  dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
832  dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
833  dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
834 
835  dsp->avg_vc1_mspel_pixels_tab[ 0] = avg_pixels8x8_c;
836  dsp->avg_vc1_mspel_pixels_tab[ 1] = avg_vc1_mspel_mc10_c;
837  dsp->avg_vc1_mspel_pixels_tab[ 2] = avg_vc1_mspel_mc20_c;
838  dsp->avg_vc1_mspel_pixels_tab[ 3] = avg_vc1_mspel_mc30_c;
839  dsp->avg_vc1_mspel_pixels_tab[ 4] = avg_vc1_mspel_mc01_c;
840  dsp->avg_vc1_mspel_pixels_tab[ 5] = avg_vc1_mspel_mc11_c;
841  dsp->avg_vc1_mspel_pixels_tab[ 6] = avg_vc1_mspel_mc21_c;
842  dsp->avg_vc1_mspel_pixels_tab[ 7] = avg_vc1_mspel_mc31_c;
843  dsp->avg_vc1_mspel_pixels_tab[ 8] = avg_vc1_mspel_mc02_c;
844  dsp->avg_vc1_mspel_pixels_tab[ 9] = avg_vc1_mspel_mc12_c;
845  dsp->avg_vc1_mspel_pixels_tab[10] = avg_vc1_mspel_mc22_c;
846  dsp->avg_vc1_mspel_pixels_tab[11] = avg_vc1_mspel_mc32_c;
847  dsp->avg_vc1_mspel_pixels_tab[12] = avg_vc1_mspel_mc03_c;
848  dsp->avg_vc1_mspel_pixels_tab[13] = avg_vc1_mspel_mc13_c;
849  dsp->avg_vc1_mspel_pixels_tab[14] = avg_vc1_mspel_mc23_c;
850  dsp->avg_vc1_mspel_pixels_tab[15] = avg_vc1_mspel_mc33_c;
851 
852  dsp->put_no_rnd_vc1_chroma_pixels_tab[0]= put_no_rnd_vc1_chroma_mc8_c;
853  dsp->avg_no_rnd_vc1_chroma_pixels_tab[0]= avg_no_rnd_vc1_chroma_mc8_c;
854  dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = put_no_rnd_vc1_chroma_mc4_c;
855 
856 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
857  dsp->sprite_h = sprite_h_c;
858  dsp->sprite_v_single = sprite_v_single_c;
859  dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;
860  dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;
861  dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
862 #endif
863 
864  if (HAVE_ALTIVEC)
865  ff_vc1dsp_init_altivec(dsp);
866  if (ARCH_X86)
867  ff_vc1dsp_init_x86(dsp);
868 }
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