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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 "libavutil/intreadwrite.h"
31 #include "h264chroma.h"
32 #include "qpeldsp.h"
33 #include "rnd_avg.h"
34 #include "vc1dsp.h"
35 #include "startcode.h"
36 
37 /* Apply overlap transform to horizontal edge */
38 static void vc1_v_overlap_c(uint8_t *src, int stride)
39 {
40  int i;
41  int a, b, c, d;
42  int d1, d2;
43  int rnd = 1;
44  for (i = 0; i < 8; i++) {
45  a = src[-2 * stride];
46  b = src[-stride];
47  c = src[0];
48  d = src[stride];
49  d1 = (a - d + 3 + rnd) >> 3;
50  d2 = (a - d + b - c + 4 - rnd) >> 3;
51 
52  src[-2 * stride] = a - d1;
53  src[-stride] = av_clip_uint8(b - d2);
54  src[0] = av_clip_uint8(c + d2);
55  src[stride] = d + d1;
56  src++;
57  rnd = !rnd;
58  }
59 }
60 
61 /* Apply overlap transform to vertical edge */
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 {
147  int a0 = (2 * (src[-2 * stride] - src[1 * stride]) -
148  5 * (src[-1 * stride] - src[0 * stride]) + 4) >> 3;
149  int a0_sign = a0 >> 31; /* Store sign */
150 
151  a0 = (a0 ^ a0_sign) - a0_sign; /* a0 = FFABS(a0); */
152  if (a0 < pq) {
153  int a1 = FFABS((2 * (src[-4 * stride] - src[-1 * stride]) -
154  5 * (src[-3 * stride] - src[-2 * stride]) + 4) >> 3);
155  int a2 = FFABS((2 * (src[ 0 * stride] - src[ 3 * stride]) -
156  5 * (src[ 1 * stride] - src[ 2 * stride]) + 4) >> 3);
157  if (a1 < a0 || a2 < a0) {
158  int clip = src[-1 * stride] - src[0 * stride];
159  int clip_sign = clip >> 31;
160 
161  clip = ((clip ^ clip_sign) - clip_sign) >> 1;
162  if (clip) {
163  int a3 = FFMIN(a1, a2);
164  int d = 5 * (a3 - a0);
165  int d_sign = (d >> 31);
166 
167  d = ((d ^ d_sign) - d_sign) >> 3;
168  d_sign ^= a0_sign;
169 
170  if (d_sign ^ clip_sign)
171  d = 0;
172  else {
173  d = FFMIN(d, clip);
174  d = (d ^ d_sign) - d_sign; /* Restore sign */
175  src[-1 * stride] = av_clip_uint8(src[-1 * stride] - d);
176  src[ 0 * stride] = av_clip_uint8(src[ 0 * stride] + d);
177  }
178  return 1;
179  }
180  }
181  }
182  return 0;
183 }
184 
185 /**
186  * VC-1 in-loop deblocking filter
187  * @param src source block type
188  * @param step distance between horizontally adjacent elements
189  * @param stride distance between vertically adjacent elements
190  * @param len edge length to filter (4 or 8 pixels)
191  * @param pq block quantizer
192  * @see 8.6
193  */
194 static inline void vc1_loop_filter(uint8_t *src, int step, int stride,
195  int len, int pq)
196 {
197  int i;
198  int filt3;
199 
200  for (i = 0; i < len; i += 4) {
201  filt3 = vc1_filter_line(src + 2 * step, stride, pq);
202  if (filt3) {
203  vc1_filter_line(src + 0 * step, stride, pq);
204  vc1_filter_line(src + 1 * step, stride, pq);
205  vc1_filter_line(src + 3 * step, stride, pq);
206  }
207  src += step * 4;
208  }
209 }
210 
211 static void vc1_v_loop_filter4_c(uint8_t *src, int stride, int pq)
212 {
213  vc1_loop_filter(src, 1, stride, 4, pq);
214 }
215 
216 static void vc1_h_loop_filter4_c(uint8_t *src, int stride, int pq)
217 {
218  vc1_loop_filter(src, stride, 1, 4, pq);
219 }
220 
221 static void vc1_v_loop_filter8_c(uint8_t *src, int stride, int pq)
222 {
223  vc1_loop_filter(src, 1, stride, 8, pq);
224 }
225 
226 static void vc1_h_loop_filter8_c(uint8_t *src, int stride, int pq)
227 {
228  vc1_loop_filter(src, stride, 1, 8, pq);
229 }
230 
231 static void vc1_v_loop_filter16_c(uint8_t *src, int stride, int pq)
232 {
233  vc1_loop_filter(src, 1, stride, 16, pq);
234 }
235 
236 static void vc1_h_loop_filter16_c(uint8_t *src, int stride, int pq)
237 {
238  vc1_loop_filter(src, stride, 1, 16, pq);
239 }
240 
241 /* Do inverse transform on 8x8 block */
242 static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, int16_t *block)
243 {
244  int i;
245  int dc = block[0];
246 
247  dc = (3 * dc + 1) >> 1;
248  dc = (3 * dc + 16) >> 5;
249 
250  for (i = 0; i < 8; i++) {
251  dest[0] = av_clip_uint8(dest[0] + dc);
252  dest[1] = av_clip_uint8(dest[1] + dc);
253  dest[2] = av_clip_uint8(dest[2] + dc);
254  dest[3] = av_clip_uint8(dest[3] + dc);
255  dest[4] = av_clip_uint8(dest[4] + dc);
256  dest[5] = av_clip_uint8(dest[5] + dc);
257  dest[6] = av_clip_uint8(dest[6] + dc);
258  dest[7] = av_clip_uint8(dest[7] + dc);
259  dest += linesize;
260  }
261 }
262 
263 static void vc1_inv_trans_8x8_c(int16_t block[64])
264 {
265  int i;
266  register int t1, t2, t3, t4, t5, t6, t7, t8;
267  int16_t *src, *dst, temp[64];
268 
269  src = block;
270  dst = temp;
271  for (i = 0; i < 8; i++) {
272  t1 = 12 * (src[ 0] + src[32]) + 4;
273  t2 = 12 * (src[ 0] - src[32]) + 4;
274  t3 = 16 * src[16] + 6 * src[48];
275  t4 = 6 * src[16] - 16 * src[48];
276 
277  t5 = t1 + t3;
278  t6 = t2 + t4;
279  t7 = t2 - t4;
280  t8 = t1 - t3;
281 
282  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
283  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
284  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
285  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
286 
287  dst[0] = (t5 + t1) >> 3;
288  dst[1] = (t6 + t2) >> 3;
289  dst[2] = (t7 + t3) >> 3;
290  dst[3] = (t8 + t4) >> 3;
291  dst[4] = (t8 - t4) >> 3;
292  dst[5] = (t7 - t3) >> 3;
293  dst[6] = (t6 - t2) >> 3;
294  dst[7] = (t5 - t1) >> 3;
295 
296  src += 1;
297  dst += 8;
298  }
299 
300  src = temp;
301  dst = block;
302  for (i = 0; i < 8; i++) {
303  t1 = 12 * (src[ 0] + src[32]) + 64;
304  t2 = 12 * (src[ 0] - src[32]) + 64;
305  t3 = 16 * src[16] + 6 * src[48];
306  t4 = 6 * src[16] - 16 * src[48];
307 
308  t5 = t1 + t3;
309  t6 = t2 + t4;
310  t7 = t2 - t4;
311  t8 = t1 - t3;
312 
313  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
314  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
315  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
316  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
317 
318  dst[ 0] = (t5 + t1) >> 7;
319  dst[ 8] = (t6 + t2) >> 7;
320  dst[16] = (t7 + t3) >> 7;
321  dst[24] = (t8 + t4) >> 7;
322  dst[32] = (t8 - t4 + 1) >> 7;
323  dst[40] = (t7 - t3 + 1) >> 7;
324  dst[48] = (t6 - t2 + 1) >> 7;
325  dst[56] = (t5 - t1 + 1) >> 7;
326 
327  src++;
328  dst++;
329  }
330 }
331 
332 /* Do inverse transform on 8x4 part of block */
333 static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, int16_t *block)
334 {
335  int i;
336  int dc = block[0];
337 
338  dc = (3 * dc + 1) >> 1;
339  dc = (17 * dc + 64) >> 7;
340 
341  for (i = 0; i < 4; i++) {
342  dest[0] = av_clip_uint8(dest[0] + dc);
343  dest[1] = av_clip_uint8(dest[1] + dc);
344  dest[2] = av_clip_uint8(dest[2] + dc);
345  dest[3] = av_clip_uint8(dest[3] + dc);
346  dest[4] = av_clip_uint8(dest[4] + dc);
347  dest[5] = av_clip_uint8(dest[5] + dc);
348  dest[6] = av_clip_uint8(dest[6] + dc);
349  dest[7] = av_clip_uint8(dest[7] + dc);
350  dest += linesize;
351  }
352 }
353 
354 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, int16_t *block)
355 {
356  int i;
357  register int t1, t2, t3, t4, t5, t6, t7, t8;
358  int16_t *src, *dst;
359 
360  src = block;
361  dst = block;
362 
363  for (i = 0; i < 4; i++) {
364  t1 = 12 * (src[0] + src[4]) + 4;
365  t2 = 12 * (src[0] - src[4]) + 4;
366  t3 = 16 * src[2] + 6 * src[6];
367  t4 = 6 * src[2] - 16 * src[6];
368 
369  t5 = t1 + t3;
370  t6 = t2 + t4;
371  t7 = t2 - t4;
372  t8 = t1 - t3;
373 
374  t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
375  t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
376  t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
377  t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
378 
379  dst[0] = (t5 + t1) >> 3;
380  dst[1] = (t6 + t2) >> 3;
381  dst[2] = (t7 + t3) >> 3;
382  dst[3] = (t8 + t4) >> 3;
383  dst[4] = (t8 - t4) >> 3;
384  dst[5] = (t7 - t3) >> 3;
385  dst[6] = (t6 - t2) >> 3;
386  dst[7] = (t5 - t1) >> 3;
387 
388  src += 8;
389  dst += 8;
390  }
391 
392  src = block;
393  for (i = 0; i < 8; i++) {
394  t1 = 17 * (src[ 0] + src[16]) + 64;
395  t2 = 17 * (src[ 0] - src[16]) + 64;
396  t3 = 22 * src[ 8] + 10 * src[24];
397  t4 = 22 * src[24] - 10 * src[ 8];
398 
399  dest[0 * linesize] = av_clip_uint8(dest[0 * linesize] + ((t1 + t3) >> 7));
400  dest[1 * linesize] = av_clip_uint8(dest[1 * linesize] + ((t2 - t4) >> 7));
401  dest[2 * linesize] = av_clip_uint8(dest[2 * linesize] + ((t2 + t4) >> 7));
402  dest[3 * linesize] = av_clip_uint8(dest[3 * linesize] + ((t1 - t3) >> 7));
403 
404  src++;
405  dest++;
406  }
407 }
408 
409 /* Do inverse transform on 4x8 parts of block */
410 static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, int16_t *block)
411 {
412  int i;
413  int dc = block[0];
414 
415  dc = (17 * dc + 4) >> 3;
416  dc = (12 * dc + 64) >> 7;
417 
418  for (i = 0; i < 8; i++) {
419  dest[0] = av_clip_uint8(dest[0] + dc);
420  dest[1] = av_clip_uint8(dest[1] + dc);
421  dest[2] = av_clip_uint8(dest[2] + dc);
422  dest[3] = av_clip_uint8(dest[3] + dc);
423  dest += linesize;
424  }
425 }
426 
427 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, int16_t *block)
428 {
429  int i;
430  register int t1, t2, t3, t4, t5, t6, t7, t8;
431  int16_t *src, *dst;
432 
433  src = block;
434  dst = block;
435 
436  for (i = 0; i < 8; i++) {
437  t1 = 17 * (src[0] + src[2]) + 4;
438  t2 = 17 * (src[0] - src[2]) + 4;
439  t3 = 22 * src[1] + 10 * src[3];
440  t4 = 22 * src[3] - 10 * src[1];
441 
442  dst[0] = (t1 + t3) >> 3;
443  dst[1] = (t2 - t4) >> 3;
444  dst[2] = (t2 + t4) >> 3;
445  dst[3] = (t1 - t3) >> 3;
446 
447  src += 8;
448  dst += 8;
449  }
450 
451  src = block;
452  for (i = 0; i < 4; i++) {
453  t1 = 12 * (src[ 0] + src[32]) + 64;
454  t2 = 12 * (src[ 0] - src[32]) + 64;
455  t3 = 16 * src[16] + 6 * src[48];
456  t4 = 6 * src[16] - 16 * src[48];
457 
458  t5 = t1 + t3;
459  t6 = t2 + t4;
460  t7 = t2 - t4;
461  t8 = t1 - t3;
462 
463  t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
464  t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
465  t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
466  t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
467 
468  dest[0 * linesize] = av_clip_uint8(dest[0 * linesize] + ((t5 + t1) >> 7));
469  dest[1 * linesize] = av_clip_uint8(dest[1 * linesize] + ((t6 + t2) >> 7));
470  dest[2 * linesize] = av_clip_uint8(dest[2 * linesize] + ((t7 + t3) >> 7));
471  dest[3 * linesize] = av_clip_uint8(dest[3 * linesize] + ((t8 + t4) >> 7));
472  dest[4 * linesize] = av_clip_uint8(dest[4 * linesize] + ((t8 - t4 + 1) >> 7));
473  dest[5 * linesize] = av_clip_uint8(dest[5 * linesize] + ((t7 - t3 + 1) >> 7));
474  dest[6 * linesize] = av_clip_uint8(dest[6 * linesize] + ((t6 - t2 + 1) >> 7));
475  dest[7 * linesize] = av_clip_uint8(dest[7 * linesize] + ((t5 - t1 + 1) >> 7));
476 
477  src++;
478  dest++;
479  }
480 }
481 
482 /* Do inverse transform on 4x4 part of block */
483 static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, int16_t *block)
484 {
485  int i;
486  int dc = block[0];
487 
488  dc = (17 * dc + 4) >> 3;
489  dc = (17 * dc + 64) >> 7;
490 
491  for (i = 0; i < 4; i++) {
492  dest[0] = av_clip_uint8(dest[0] + dc);
493  dest[1] = av_clip_uint8(dest[1] + dc);
494  dest[2] = av_clip_uint8(dest[2] + dc);
495  dest[3] = av_clip_uint8(dest[3] + dc);
496  dest += linesize;
497  }
498 }
499 
500 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, int16_t *block)
501 {
502  int i;
503  register int t1, t2, t3, t4;
504  int16_t *src, *dst;
505 
506  src = block;
507  dst = block;
508  for (i = 0; i < 4; i++) {
509  t1 = 17 * (src[0] + src[2]) + 4;
510  t2 = 17 * (src[0] - src[2]) + 4;
511  t3 = 22 * src[1] + 10 * src[3];
512  t4 = 22 * src[3] - 10 * src[1];
513 
514  dst[0] = (t1 + t3) >> 3;
515  dst[1] = (t2 - t4) >> 3;
516  dst[2] = (t2 + t4) >> 3;
517  dst[3] = (t1 - t3) >> 3;
518 
519  src += 8;
520  dst += 8;
521  }
522 
523  src = block;
524  for (i = 0; i < 4; i++) {
525  t1 = 17 * (src[0] + src[16]) + 64;
526  t2 = 17 * (src[0] - src[16]) + 64;
527  t3 = 22 * src[8] + 10 * src[24];
528  t4 = 22 * src[24] - 10 * src[8];
529 
530  dest[0 * linesize] = av_clip_uint8(dest[0 * linesize] + ((t1 + t3) >> 7));
531  dest[1 * linesize] = av_clip_uint8(dest[1 * linesize] + ((t2 - t4) >> 7));
532  dest[2 * linesize] = av_clip_uint8(dest[2 * linesize] + ((t2 + t4) >> 7));
533  dest[3 * linesize] = av_clip_uint8(dest[3 * linesize] + ((t1 - t3) >> 7));
534 
535  src++;
536  dest++;
537  }
538 }
539 
540 /* motion compensation functions */
541 
542 /* Filter in case of 2 filters */
543 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
544 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, \
545  int stride, \
546  int mode) \
547 { \
548  switch(mode) { \
549  case 0: /* no shift - should not occur */ \
550  return 0; \
551  case 1: /* 1/4 shift */ \
552  return -4 * src[-stride] + 53 * src[0] + \
553  18 * src[stride] - 3 * src[stride * 2]; \
554  case 2: /* 1/2 shift */ \
555  return -1 * src[-stride] + 9 * src[0] + \
556  9 * src[stride] - 1 * src[stride * 2]; \
557  case 3: /* 3/4 shift */ \
558  return -3 * src[-stride] + 18 * src[0] + \
559  53 * src[stride] - 4 * src[stride * 2]; \
560  } \
561  return 0; /* should not occur */ \
562 }
563 
564 VC1_MSPEL_FILTER_16B(ver, uint8_t)
565 VC1_MSPEL_FILTER_16B(hor, int16_t)
566 
567 /* Filter used to interpolate fractional pel values */
568 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride,
569  int mode, int r)
570 {
571  switch (mode) {
572  case 0: // no shift
573  return src[0];
574  case 1: // 1/4 shift
575  return (-4 * src[-stride] + 53 * src[0] +
576  18 * src[stride] - 3 * src[stride * 2] + 32 - r) >> 6;
577  case 2: // 1/2 shift
578  return (-1 * src[-stride] + 9 * src[0] +
579  9 * src[stride] - 1 * src[stride * 2] + 8 - r) >> 4;
580  case 3: // 3/4 shift
581  return (-3 * src[-stride] + 18 * src[0] +
582  53 * src[stride] - 4 * src[stride * 2] + 32 - r) >> 6;
583  }
584  return 0; // should not occur
585 }
586 
587 /* Function used to do motion compensation with bicubic interpolation */
588 #define VC1_MSPEL_MC(OP, OP4, OPNAME) \
589 static av_always_inline void OPNAME ## vc1_mspel_mc(uint8_t *dst, \
590  const uint8_t *src, \
591  ptrdiff_t stride, \
592  int hmode, \
593  int vmode, \
594  int rnd) \
595 { \
596  int i, j; \
597  \
598  if (vmode) { /* Horizontal filter to apply */ \
599  int r; \
600  \
601  if (hmode) { /* Vertical filter to apply, output to tmp */ \
602  static const int shift_value[] = { 0, 5, 1, 5 }; \
603  int shift = (shift_value[hmode] + shift_value[vmode]) >> 1; \
604  int16_t tmp[11 * 8], *tptr = tmp; \
605  \
606  r = (1 << (shift - 1)) + rnd - 1; \
607  \
608  src -= 1; \
609  for (j = 0; j < 8; j++) { \
610  for (i = 0; i < 11; i++) \
611  tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode) + r) >> shift; \
612  src += stride; \
613  tptr += 11; \
614  } \
615  \
616  r = 64 - rnd; \
617  tptr = tmp + 1; \
618  for (j = 0; j < 8; j++) { \
619  for (i = 0; i < 8; i++) \
620  OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode) + r) >> 7); \
621  dst += stride; \
622  tptr += 11; \
623  } \
624  \
625  return; \
626  } else { /* No horizontal filter, output 8 lines to dst */ \
627  r = 1 - rnd; \
628  \
629  for (j = 0; j < 8; j++) { \
630  for (i = 0; i < 8; i++) \
631  OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r)); \
632  src += stride; \
633  dst += stride; \
634  } \
635  return; \
636  } \
637  } \
638  \
639  /* Horizontal mode with no vertical mode */ \
640  for (j = 0; j < 8; j++) { \
641  for (i = 0; i < 8; i++) \
642  OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd)); \
643  dst += stride; \
644  src += stride; \
645  } \
646 }\
647 static av_always_inline void OPNAME ## vc1_mspel_mc_16(uint8_t *dst, \
648  const uint8_t *src, \
649  ptrdiff_t stride, \
650  int hmode, \
651  int vmode, \
652  int rnd) \
653 { \
654  int i, j; \
655  \
656  if (vmode) { /* Horizontal filter to apply */ \
657  int r; \
658  \
659  if (hmode) { /* Vertical filter to apply, output to tmp */ \
660  static const int shift_value[] = { 0, 5, 1, 5 }; \
661  int shift = (shift_value[hmode] + shift_value[vmode]) >> 1; \
662  int16_t tmp[19 * 16], *tptr = tmp; \
663  \
664  r = (1 << (shift - 1)) + rnd - 1; \
665  \
666  src -= 1; \
667  for (j = 0; j < 16; j++) { \
668  for (i = 0; i < 19; i++) \
669  tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode) + r) >> shift; \
670  src += stride; \
671  tptr += 19; \
672  } \
673  \
674  r = 64 - rnd; \
675  tptr = tmp + 1; \
676  for (j = 0; j < 16; j++) { \
677  for (i = 0; i < 16; i++) \
678  OP(dst[i], (vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode) + r) >> 7); \
679  dst += stride; \
680  tptr += 19; \
681  } \
682  \
683  return; \
684  } else { /* No horizontal filter, output 8 lines to dst */ \
685  r = 1 - rnd; \
686  \
687  for (j = 0; j < 16; j++) { \
688  for (i = 0; i < 16; i++) \
689  OP(dst[i], vc1_mspel_filter(src + i, stride, vmode, r)); \
690  src += stride; \
691  dst += stride; \
692  } \
693  return; \
694  } \
695  } \
696  \
697  /* Horizontal mode with no vertical mode */ \
698  for (j = 0; j < 16; j++) { \
699  for (i = 0; i < 16; i++) \
700  OP(dst[i], vc1_mspel_filter(src + i, 1, hmode, rnd)); \
701  dst += stride; \
702  src += stride; \
703  } \
704 }\
705 static void OPNAME ## pixels8x8_c(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int rnd){\
706  int i;\
707  for(i=0; i<8; i++){\
708  OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\
709  OP4(*(uint32_t*)(block+4), AV_RN32(pixels+4));\
710  pixels+=line_size;\
711  block +=line_size;\
712  }\
713 }\
714 static void OPNAME ## pixels16x16_c(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int rnd){\
715  int i;\
716  for(i=0; i<16; i++){\
717  OP4(*(uint32_t*)(block ), AV_RN32(pixels ));\
718  OP4(*(uint32_t*)(block+ 4), AV_RN32(pixels+ 4));\
719  OP4(*(uint32_t*)(block+ 8), AV_RN32(pixels+ 8));\
720  OP4(*(uint32_t*)(block+12), AV_RN32(pixels+12));\
721  pixels+=line_size;\
722  block +=line_size;\
723  }\
724 }
725 
726 #define op_put(a, b) a = av_clip_uint8(b)
727 #define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
728 #define op4_avg(a, b) a = rnd_avg32(a, b)
729 #define op4_put(a, b) a = b
730 
731 VC1_MSPEL_MC(op_put, op4_put, put_)
732 VC1_MSPEL_MC(op_avg, op4_avg, avg_)
733 
734 /* pixel functions - really are entry points to vc1_mspel_mc */
735 
736 #define PUT_VC1_MSPEL(a, b) \
737 static void put_vc1_mspel_mc ## a ## b ## _c(uint8_t *dst, \
738  const uint8_t *src, \
739  ptrdiff_t stride, int rnd) \
740 { \
741  put_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
742 } \
743 static void avg_vc1_mspel_mc ## a ## b ## _c(uint8_t *dst, \
744  const uint8_t *src, \
745  ptrdiff_t stride, int rnd) \
746 { \
747  avg_vc1_mspel_mc(dst, src, stride, a, b, rnd); \
748 } \
749 static void put_vc1_mspel_mc ## a ## b ## _16_c(uint8_t *dst, \
750  const uint8_t *src, \
751  ptrdiff_t stride, int rnd) \
752 { \
753  put_vc1_mspel_mc_16(dst, src, stride, a, b, rnd); \
754 } \
755 static void avg_vc1_mspel_mc ## a ## b ## _16_c(uint8_t *dst, \
756  const uint8_t *src, \
757  ptrdiff_t stride, int rnd) \
758 { \
759  avg_vc1_mspel_mc_16(dst, src, stride, a, b, rnd); \
760 }
761 
762 PUT_VC1_MSPEL(1, 0)
763 PUT_VC1_MSPEL(2, 0)
764 PUT_VC1_MSPEL(3, 0)
765 
766 PUT_VC1_MSPEL(0, 1)
767 PUT_VC1_MSPEL(1, 1)
768 PUT_VC1_MSPEL(2, 1)
769 PUT_VC1_MSPEL(3, 1)
770 
771 PUT_VC1_MSPEL(0, 2)
772 PUT_VC1_MSPEL(1, 2)
773 PUT_VC1_MSPEL(2, 2)
774 PUT_VC1_MSPEL(3, 2)
775 
776 PUT_VC1_MSPEL(0, 3)
777 PUT_VC1_MSPEL(1, 3)
778 PUT_VC1_MSPEL(2, 3)
779 PUT_VC1_MSPEL(3, 3)
780 
781 #define chroma_mc(a) \
782  ((A * src[a] + B * src[a + 1] + \
783  C * src[stride + a] + D * src[stride + a + 1] + 32 - 4) >> 6)
784 static void put_no_rnd_vc1_chroma_mc8_c(uint8_t *dst /* align 8 */,
785  uint8_t *src /* align 1 */,
786  int stride, int h, int x, int y)
787 {
788  const int A = (8 - x) * (8 - y);
789  const int B = (x) * (8 - y);
790  const int C = (8 - x) * (y);
791  const int D = (x) * (y);
792  int i;
793 
794  av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
795 
796  for (i = 0; i < h; i++) {
797  dst[0] = chroma_mc(0);
798  dst[1] = chroma_mc(1);
799  dst[2] = chroma_mc(2);
800  dst[3] = chroma_mc(3);
801  dst[4] = chroma_mc(4);
802  dst[5] = chroma_mc(5);
803  dst[6] = chroma_mc(6);
804  dst[7] = chroma_mc(7);
805  dst += stride;
806  src += stride;
807  }
808 }
809 
810 static void put_no_rnd_vc1_chroma_mc4_c(uint8_t *dst, uint8_t *src,
811  int stride, int h, int x, int y)
812 {
813  const int A = (8 - x) * (8 - y);
814  const int B = (x) * (8 - y);
815  const int C = (8 - x) * (y);
816  const int D = (x) * (y);
817  int i;
818 
819  av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
820 
821  for (i = 0; i < h; i++) {
822  dst[0] = chroma_mc(0);
823  dst[1] = chroma_mc(1);
824  dst[2] = chroma_mc(2);
825  dst[3] = chroma_mc(3);
826  dst += stride;
827  src += stride;
828  }
829 }
830 
831 #define avg2(a, b) (((a) + (b) + 1) >> 1)
832 static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst /* align 8 */,
833  uint8_t *src /* align 1 */,
834  int stride, int h, int x, int y)
835 {
836  const int A = (8 - x) * (8 - y);
837  const int B = (x) * (8 - y);
838  const int C = (8 - x) * (y);
839  const int D = (x) * (y);
840  int i;
841 
842  av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
843 
844  for (i = 0; i < h; i++) {
845  dst[0] = avg2(dst[0], chroma_mc(0));
846  dst[1] = avg2(dst[1], chroma_mc(1));
847  dst[2] = avg2(dst[2], chroma_mc(2));
848  dst[3] = avg2(dst[3], chroma_mc(3));
849  dst[4] = avg2(dst[4], chroma_mc(4));
850  dst[5] = avg2(dst[5], chroma_mc(5));
851  dst[6] = avg2(dst[6], chroma_mc(6));
852  dst[7] = avg2(dst[7], chroma_mc(7));
853  dst += stride;
854  src += stride;
855  }
856 }
857 
858 static void avg_no_rnd_vc1_chroma_mc4_c(uint8_t *dst /* align 8 */,
859  uint8_t *src /* align 1 */,
860  int stride, int h, int x, int y)
861 {
862  const int A = (8 - x) * (8 - y);
863  const int B = ( x) * (8 - y);
864  const int C = (8 - x) * ( y);
865  const int D = ( x) * ( y);
866  int i;
867 
868  av_assert2(x < 8 && y < 8 && x >= 0 && y >= 0);
869 
870  for (i = 0; i < h; i++) {
871  dst[0] = avg2(dst[0], chroma_mc(0));
872  dst[1] = avg2(dst[1], chroma_mc(1));
873  dst[2] = avg2(dst[2], chroma_mc(2));
874  dst[3] = avg2(dst[3], chroma_mc(3));
875  dst += stride;
876  src += stride;
877  }
878 }
879 
880 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
881 
882 static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset,
883  int advance, int count)
884 {
885  while (count--) {
886  int a = src[(offset >> 16)];
887  int b = src[(offset >> 16) + 1];
888  *dst++ = a + ((b - a) * (offset & 0xFFFF) >> 16);
889  offset += advance;
890  }
891 }
892 
893 static av_always_inline void sprite_v_template(uint8_t *dst,
894  const uint8_t *src1a,
895  const uint8_t *src1b,
896  int offset1,
897  int two_sprites,
898  const uint8_t *src2a,
899  const uint8_t *src2b,
900  int offset2,
901  int alpha, int scaled,
902  int width)
903 {
904  int a1, b1, a2, b2;
905  while (width--) {
906  a1 = *src1a++;
907  if (scaled) {
908  b1 = *src1b++;
909  a1 = a1 + ((b1 - a1) * offset1 >> 16);
910  }
911  if (two_sprites) {
912  a2 = *src2a++;
913  if (scaled > 1) {
914  b2 = *src2b++;
915  a2 = a2 + ((b2 - a2) * offset2 >> 16);
916  }
917  a1 = a1 + ((a2 - a1) * alpha >> 16);
918  }
919  *dst++ = a1;
920  }
921 }
922 
923 static void sprite_v_single_c(uint8_t *dst, const uint8_t *src1a,
924  const uint8_t *src1b,
925  int offset, int width)
926 {
927  sprite_v_template(dst, src1a, src1b, offset, 0, NULL, NULL, 0, 0, 1, width);
928 }
929 
930 static void sprite_v_double_noscale_c(uint8_t *dst, const uint8_t *src1a,
931  const uint8_t *src2a,
932  int alpha, int width)
933 {
934  sprite_v_template(dst, src1a, NULL, 0, 1, src2a, NULL, 0, alpha, 0, width);
935 }
936 
937 static void sprite_v_double_onescale_c(uint8_t *dst,
938  const uint8_t *src1a,
939  const uint8_t *src1b,
940  int offset1,
941  const uint8_t *src2a,
942  int alpha, int width)
943 {
944  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, NULL, 0, alpha, 1,
945  width);
946 }
947 
948 static void sprite_v_double_twoscale_c(uint8_t *dst,
949  const uint8_t *src1a,
950  const uint8_t *src1b,
951  int offset1,
952  const uint8_t *src2a,
953  const uint8_t *src2b,
954  int offset2,
955  int alpha,
956  int width)
957 {
958  sprite_v_template(dst, src1a, src1b, offset1, 1, src2a, src2b, offset2,
959  alpha, 2, width);
960 }
961 
962 #endif /* CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER */
963 #define FN_ASSIGN(X, Y) \
964  dsp->put_vc1_mspel_pixels_tab[1][X+4*Y] = put_vc1_mspel_mc##X##Y##_c; \
965  dsp->put_vc1_mspel_pixels_tab[0][X+4*Y] = put_vc1_mspel_mc##X##Y##_16_c; \
966  dsp->avg_vc1_mspel_pixels_tab[1][X+4*Y] = avg_vc1_mspel_mc##X##Y##_c; \
967  dsp->avg_vc1_mspel_pixels_tab[0][X+4*Y] = avg_vc1_mspel_mc##X##Y##_16_c
968 
969 av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
970 {
971  dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
972  dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
973  dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
974  dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
975  dsp->vc1_inv_trans_8x8_dc = vc1_inv_trans_8x8_dc_c;
976  dsp->vc1_inv_trans_4x8_dc = vc1_inv_trans_4x8_dc_c;
977  dsp->vc1_inv_trans_8x4_dc = vc1_inv_trans_8x4_dc_c;
978  dsp->vc1_inv_trans_4x4_dc = vc1_inv_trans_4x4_dc_c;
979 
980  dsp->vc1_h_overlap = vc1_h_overlap_c;
981  dsp->vc1_v_overlap = vc1_v_overlap_c;
982  dsp->vc1_h_s_overlap = vc1_h_s_overlap_c;
983  dsp->vc1_v_s_overlap = vc1_v_s_overlap_c;
984 
985  dsp->vc1_v_loop_filter4 = vc1_v_loop_filter4_c;
986  dsp->vc1_h_loop_filter4 = vc1_h_loop_filter4_c;
987  dsp->vc1_v_loop_filter8 = vc1_v_loop_filter8_c;
988  dsp->vc1_h_loop_filter8 = vc1_h_loop_filter8_c;
989  dsp->vc1_v_loop_filter16 = vc1_v_loop_filter16_c;
990  dsp->vc1_h_loop_filter16 = vc1_h_loop_filter16_c;
991 
992  dsp->put_vc1_mspel_pixels_tab[0][0] = put_pixels16x16_c;
993  dsp->avg_vc1_mspel_pixels_tab[0][0] = avg_pixels16x16_c;
994  dsp->put_vc1_mspel_pixels_tab[1][0] = put_pixels8x8_c;
995  dsp->avg_vc1_mspel_pixels_tab[1][0] = avg_pixels8x8_c;
996  FN_ASSIGN(0, 1);
997  FN_ASSIGN(0, 2);
998  FN_ASSIGN(0, 3);
999 
1000  FN_ASSIGN(1, 0);
1001  FN_ASSIGN(1, 1);
1002  FN_ASSIGN(1, 2);
1003  FN_ASSIGN(1, 3);
1004 
1005  FN_ASSIGN(2, 0);
1006  FN_ASSIGN(2, 1);
1007  FN_ASSIGN(2, 2);
1008  FN_ASSIGN(2, 3);
1009 
1010  FN_ASSIGN(3, 0);
1011  FN_ASSIGN(3, 1);
1012  FN_ASSIGN(3, 2);
1013  FN_ASSIGN(3, 3);
1014 
1015  dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_c;
1016  dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_c;
1017  dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = put_no_rnd_vc1_chroma_mc4_c;
1018  dsp->avg_no_rnd_vc1_chroma_pixels_tab[1] = avg_no_rnd_vc1_chroma_mc4_c;
1019 
1020 #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER
1021  dsp->sprite_h = sprite_h_c;
1022  dsp->sprite_v_single = sprite_v_single_c;
1023  dsp->sprite_v_double_noscale = sprite_v_double_noscale_c;
1024  dsp->sprite_v_double_onescale = sprite_v_double_onescale_c;
1025  dsp->sprite_v_double_twoscale = sprite_v_double_twoscale_c;
1026 #endif /* CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER */
1027 
1028  dsp->startcode_find_candidate = ff_startcode_find_candidate_c;
1029 
1030  if (ARCH_AARCH64)
1031  ff_vc1dsp_init_aarch64(dsp);
1032  if (ARCH_ARM)
1033  ff_vc1dsp_init_arm(dsp);
1034  if (ARCH_PPC)
1035  ff_vc1dsp_init_ppc(dsp);
1036  if (ARCH_X86)
1037  ff_vc1dsp_init_x86(dsp);
1038 }
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