FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vp8dsp.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2010 David Conrad
3  * Copyright (C) 2010 Ronald S. Bultje
4  * Copyright (C) 2014 Peter Ross
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * VP8 compatible video decoder
26  */
27 
28 #include "libavutil/common.h"
29 #include "libavutil/intreadwrite.h"
30 
31 #include "mathops.h"
32 #include "vp8dsp.h"
33 
34 #define MK_IDCT_DC_ADD4_C(name) \
35 static void name ## _idct_dc_add4uv_c(uint8_t *dst, int16_t block[4][16], \
36  ptrdiff_t stride) \
37 { \
38  name ## _idct_dc_add_c(dst + stride * 0 + 0, block[0], stride); \
39  name ## _idct_dc_add_c(dst + stride * 0 + 4, block[1], stride); \
40  name ## _idct_dc_add_c(dst + stride * 4 + 0, block[2], stride); \
41  name ## _idct_dc_add_c(dst + stride * 4 + 4, block[3], stride); \
42 } \
43  \
44 static void name ## _idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16], \
45  ptrdiff_t stride) \
46 { \
47  name ## _idct_dc_add_c(dst + 0, block[0], stride); \
48  name ## _idct_dc_add_c(dst + 4, block[1], stride); \
49  name ## _idct_dc_add_c(dst + 8, block[2], stride); \
50  name ## _idct_dc_add_c(dst + 12, block[3], stride); \
51 }
52 
53 #if CONFIG_VP7_DECODER
54 static void vp7_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
55 {
56  int i, a1, b1, c1, d1;
57  int16_t tmp[16];
58 
59  for (i = 0; i < 4; i++) {
60  a1 = (dc[i * 4 + 0] + dc[i * 4 + 2]) * 23170;
61  b1 = (dc[i * 4 + 0] - dc[i * 4 + 2]) * 23170;
62  c1 = dc[i * 4 + 1] * 12540 - dc[i * 4 + 3] * 30274;
63  d1 = dc[i * 4 + 1] * 30274 + dc[i * 4 + 3] * 12540;
64  tmp[i * 4 + 0] = (a1 + d1) >> 14;
65  tmp[i * 4 + 3] = (a1 - d1) >> 14;
66  tmp[i * 4 + 1] = (b1 + c1) >> 14;
67  tmp[i * 4 + 2] = (b1 - c1) >> 14;
68  }
69 
70  for (i = 0; i < 4; i++) {
71  a1 = (tmp[i + 0] + tmp[i + 8]) * 23170;
72  b1 = (tmp[i + 0] - tmp[i + 8]) * 23170;
73  c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;
74  d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;
75  AV_ZERO64(dc + i * 4);
76  block[0][i][0] = (a1 + d1 + 0x20000) >> 18;
77  block[3][i][0] = (a1 - d1 + 0x20000) >> 18;
78  block[1][i][0] = (b1 + c1 + 0x20000) >> 18;
79  block[2][i][0] = (b1 - c1 + 0x20000) >> 18;
80  }
81 }
82 
83 static void vp7_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])
84 {
85  int i, val = (23170 * (23170 * dc[0] >> 14) + 0x20000) >> 18;
86  dc[0] = 0;
87 
88  for (i = 0; i < 4; i++) {
89  block[i][0][0] = val;
90  block[i][1][0] = val;
91  block[i][2][0] = val;
92  block[i][3][0] = val;
93  }
94 }
95 
96 static void vp7_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
97 {
98  int i, a1, b1, c1, d1;
99  int16_t tmp[16];
100 
101  for (i = 0; i < 4; i++) {
102  a1 = (block[i * 4 + 0] + block[i * 4 + 2]) * 23170;
103  b1 = (block[i * 4 + 0] - block[i * 4 + 2]) * 23170;
104  c1 = block[i * 4 + 1] * 12540 - block[i * 4 + 3] * 30274;
105  d1 = block[i * 4 + 1] * 30274 + block[i * 4 + 3] * 12540;
106  AV_ZERO64(block + i * 4);
107  tmp[i * 4 + 0] = (a1 + d1) >> 14;
108  tmp[i * 4 + 3] = (a1 - d1) >> 14;
109  tmp[i * 4 + 1] = (b1 + c1) >> 14;
110  tmp[i * 4 + 2] = (b1 - c1) >> 14;
111  }
112 
113  for (i = 0; i < 4; i++) {
114  a1 = (tmp[i + 0] + tmp[i + 8]) * 23170;
115  b1 = (tmp[i + 0] - tmp[i + 8]) * 23170;
116  c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;
117  d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;
118  dst[0 * stride + i] = av_clip_uint8(dst[0 * stride + i] +
119  ((a1 + d1 + 0x20000) >> 18));
120  dst[3 * stride + i] = av_clip_uint8(dst[3 * stride + i] +
121  ((a1 - d1 + 0x20000) >> 18));
122  dst[1 * stride + i] = av_clip_uint8(dst[1 * stride + i] +
123  ((b1 + c1 + 0x20000) >> 18));
124  dst[2 * stride + i] = av_clip_uint8(dst[2 * stride + i] +
125  ((b1 - c1 + 0x20000) >> 18));
126  }
127 }
128 
129 static void vp7_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
130 {
131  int i, dc = (23170 * (23170 * block[0] >> 14) + 0x20000) >> 18;
132  block[0] = 0;
133 
134  for (i = 0; i < 4; i++) {
135  dst[0] = av_clip_uint8(dst[0] + dc);
136  dst[1] = av_clip_uint8(dst[1] + dc);
137  dst[2] = av_clip_uint8(dst[2] + dc);
138  dst[3] = av_clip_uint8(dst[3] + dc);
139  dst += stride;
140  }
141 }
142 
143 MK_IDCT_DC_ADD4_C(vp7)
144 #endif /* CONFIG_VP7_DECODER */
145 
146 // TODO: Maybe add dequant
147 #if CONFIG_VP8_DECODER
148 static void vp8_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
149 {
150  int i, t0, t1, t2, t3;
151 
152  for (i = 0; i < 4; i++) {
153  t0 = dc[0 * 4 + i] + dc[3 * 4 + i];
154  t1 = dc[1 * 4 + i] + dc[2 * 4 + i];
155  t2 = dc[1 * 4 + i] - dc[2 * 4 + i];
156  t3 = dc[0 * 4 + i] - dc[3 * 4 + i];
157 
158  dc[0 * 4 + i] = t0 + t1;
159  dc[1 * 4 + i] = t3 + t2;
160  dc[2 * 4 + i] = t0 - t1;
161  dc[3 * 4 + i] = t3 - t2;
162  }
163 
164  for (i = 0; i < 4; i++) {
165  t0 = dc[i * 4 + 0] + dc[i * 4 + 3] + 3; // rounding
166  t1 = dc[i * 4 + 1] + dc[i * 4 + 2];
167  t2 = dc[i * 4 + 1] - dc[i * 4 + 2];
168  t3 = dc[i * 4 + 0] - dc[i * 4 + 3] + 3; // rounding
169  AV_ZERO64(dc + i * 4);
170 
171  block[i][0][0] = (t0 + t1) >> 3;
172  block[i][1][0] = (t3 + t2) >> 3;
173  block[i][2][0] = (t0 - t1) >> 3;
174  block[i][3][0] = (t3 - t2) >> 3;
175  }
176 }
177 
178 static void vp8_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])
179 {
180  int i, val = (dc[0] + 3) >> 3;
181  dc[0] = 0;
182 
183  for (i = 0; i < 4; i++) {
184  block[i][0][0] = val;
185  block[i][1][0] = val;
186  block[i][2][0] = val;
187  block[i][3][0] = val;
188  }
189 }
190 
191 #define MUL_20091(a) ((((a) * 20091) >> 16) + (a))
192 #define MUL_35468(a) (((a) * 35468) >> 16)
193 
194 static void vp8_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
195 {
196  int i, t0, t1, t2, t3;
197  int16_t tmp[16];
198 
199  for (i = 0; i < 4; i++) {
200  t0 = block[0 * 4 + i] + block[2 * 4 + i];
201  t1 = block[0 * 4 + i] - block[2 * 4 + i];
202  t2 = MUL_35468(block[1 * 4 + i]) - MUL_20091(block[3 * 4 + i]);
203  t3 = MUL_20091(block[1 * 4 + i]) + MUL_35468(block[3 * 4 + i]);
204  block[0 * 4 + i] = 0;
205  block[1 * 4 + i] = 0;
206  block[2 * 4 + i] = 0;
207  block[3 * 4 + i] = 0;
208 
209  tmp[i * 4 + 0] = t0 + t3;
210  tmp[i * 4 + 1] = t1 + t2;
211  tmp[i * 4 + 2] = t1 - t2;
212  tmp[i * 4 + 3] = t0 - t3;
213  }
214 
215  for (i = 0; i < 4; i++) {
216  t0 = tmp[0 * 4 + i] + tmp[2 * 4 + i];
217  t1 = tmp[0 * 4 + i] - tmp[2 * 4 + i];
218  t2 = MUL_35468(tmp[1 * 4 + i]) - MUL_20091(tmp[3 * 4 + i]);
219  t3 = MUL_20091(tmp[1 * 4 + i]) + MUL_35468(tmp[3 * 4 + i]);
220 
221  dst[0] = av_clip_uint8(dst[0] + ((t0 + t3 + 4) >> 3));
222  dst[1] = av_clip_uint8(dst[1] + ((t1 + t2 + 4) >> 3));
223  dst[2] = av_clip_uint8(dst[2] + ((t1 - t2 + 4) >> 3));
224  dst[3] = av_clip_uint8(dst[3] + ((t0 - t3 + 4) >> 3));
225  dst += stride;
226  }
227 }
228 
229 static void vp8_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
230 {
231  int i, dc = (block[0] + 4) >> 3;
232  block[0] = 0;
233 
234  for (i = 0; i < 4; i++) {
235  dst[0] = av_clip_uint8(dst[0] + dc);
236  dst[1] = av_clip_uint8(dst[1] + dc);
237  dst[2] = av_clip_uint8(dst[2] + dc);
238  dst[3] = av_clip_uint8(dst[3] + dc);
239  dst += stride;
240  }
241 }
242 
243 MK_IDCT_DC_ADD4_C(vp8)
244 #endif /* CONFIG_VP8_DECODER */
245 
246 // because I like only having two parameters to pass functions...
247 #define LOAD_PIXELS \
248  int av_unused p3 = p[-4 * stride]; \
249  int av_unused p2 = p[-3 * stride]; \
250  int av_unused p1 = p[-2 * stride]; \
251  int av_unused p0 = p[-1 * stride]; \
252  int av_unused q0 = p[ 0 * stride]; \
253  int av_unused q1 = p[ 1 * stride]; \
254  int av_unused q2 = p[ 2 * stride]; \
255  int av_unused q3 = p[ 3 * stride];
256 
257 #define clip_int8(n) (cm[(n) + 0x80] - 0x80)
258 
259 static av_always_inline void filter_common(uint8_t *p, ptrdiff_t stride,
260  int is4tap, int is_vp7)
261 {
262  LOAD_PIXELS
263  int a, f1, f2;
264  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
265 
266  a = 3 * (q0 - p0);
267 
268  if (is4tap)
269  a += clip_int8(p1 - q1);
270 
271  a = clip_int8(a);
272 
273  // We deviate from the spec here with c(a+3) >> 3
274  // since that's what libvpx does.
275  f1 = FFMIN(a + 4, 127) >> 3;
276 
277  if (is_vp7)
278  f2 = f1 - ((a & 7) == 4);
279  else
280  f2 = FFMIN(a + 3, 127) >> 3;
281 
282  // Despite what the spec says, we do need to clamp here to
283  // be bitexact with libvpx.
284  p[-1 * stride] = cm[p0 + f2];
285  p[ 0 * stride] = cm[q0 - f1];
286 
287  // only used for _inner on blocks without high edge variance
288  if (!is4tap) {
289  a = (f1 + 1) >> 1;
290  p[-2 * stride] = cm[p1 + a];
291  p[ 1 * stride] = cm[q1 - a];
292  }
293 }
294 
295 static av_always_inline void vp7_filter_common(uint8_t *p, ptrdiff_t stride,
296  int is4tap)
297 {
298  filter_common(p, stride, is4tap, IS_VP7);
299 }
300 
301 static av_always_inline void vp8_filter_common(uint8_t *p, ptrdiff_t stride,
302  int is4tap)
303 {
304  filter_common(p, stride, is4tap, IS_VP8);
305 }
306 
307 static av_always_inline int vp7_simple_limit(uint8_t *p, ptrdiff_t stride,
308  int flim)
309 {
310  LOAD_PIXELS
311  return FFABS(p0 - q0) <= flim;
312 }
313 
314 static av_always_inline int vp8_simple_limit(uint8_t *p, ptrdiff_t stride,
315  int flim)
316 {
317  LOAD_PIXELS
318  return 2 * FFABS(p0 - q0) + (FFABS(p1 - q1) >> 1) <= flim;
319 }
320 
321 /**
322  * E - limit at the macroblock edge
323  * I - limit for interior difference
324  */
325 #define NORMAL_LIMIT(vpn) \
326 static av_always_inline int vp ## vpn ## _normal_limit(uint8_t *p, \
327  ptrdiff_t stride, \
328  int E, int I) \
329 { \
330  LOAD_PIXELS \
331  return vp ## vpn ## _simple_limit(p, stride, E) && \
332  FFABS(p3 - p2) <= I && FFABS(p2 - p1) <= I && \
333  FFABS(p1 - p0) <= I && FFABS(q3 - q2) <= I && \
334  FFABS(q2 - q1) <= I && FFABS(q1 - q0) <= I; \
335 }
336 
337 NORMAL_LIMIT(7)
338 NORMAL_LIMIT(8)
339 
340 // high edge variance
341 static av_always_inline int hev(uint8_t *p, ptrdiff_t stride, int thresh)
342 {
343  LOAD_PIXELS
344  return FFABS(p1 - p0) > thresh || FFABS(q1 - q0) > thresh;
345 }
346 
347 static av_always_inline void filter_mbedge(uint8_t *p, ptrdiff_t stride)
348 {
349  int a0, a1, a2, w;
350  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
351 
352  LOAD_PIXELS
353 
354  w = clip_int8(p1 - q1);
355  w = clip_int8(w + 3 * (q0 - p0));
356 
357  a0 = (27 * w + 63) >> 7;
358  a1 = (18 * w + 63) >> 7;
359  a2 = (9 * w + 63) >> 7;
360 
361  p[-3 * stride] = cm[p2 + a2];
362  p[-2 * stride] = cm[p1 + a1];
363  p[-1 * stride] = cm[p0 + a0];
364  p[ 0 * stride] = cm[q0 - a0];
365  p[ 1 * stride] = cm[q1 - a1];
366  p[ 2 * stride] = cm[q2 - a2];
367 }
368 
369 #define LOOP_FILTER(vpn, dir, size, stridea, strideb, maybe_inline) \
370 static maybe_inline \
371 void vpn ## _ ## dir ## _loop_filter ## size ## _c(uint8_t *dst, \
372  ptrdiff_t stride, \
373  int flim_E, int flim_I, \
374  int hev_thresh) \
375 { \
376  int i; \
377  for (i = 0; i < size; i++) \
378  if (vpn ## _normal_limit(dst + i * stridea, strideb, \
379  flim_E, flim_I)) { \
380  if (hev(dst + i * stridea, strideb, hev_thresh)) \
381  vpn ## _filter_common(dst + i * stridea, strideb, 1); \
382  else \
383  filter_mbedge(dst + i * stridea, strideb); \
384  } \
385 } \
386  \
387 static maybe_inline \
388 void vpn ## _ ## dir ## _loop_filter ## size ## _inner_c(uint8_t *dst, \
389  ptrdiff_t stride, \
390  int flim_E, \
391  int flim_I, \
392  int hev_thresh) \
393 { \
394  int i; \
395  for (i = 0; i < size; i++) \
396  if (vpn ## _normal_limit(dst + i * stridea, strideb, \
397  flim_E, flim_I)) { \
398  int hv = hev(dst + i * stridea, strideb, hev_thresh); \
399  if (hv) \
400  vpn ## _filter_common(dst + i * stridea, strideb, 1); \
401  else \
402  vpn ## _filter_common(dst + i * stridea, strideb, 0); \
403  } \
404 }
405 
406 #define UV_LOOP_FILTER(vpn, dir, stridea, strideb) \
407 LOOP_FILTER(vpn, dir, 8, stridea, strideb, av_always_inline) \
408 static void vpn ## _ ## dir ## _loop_filter8uv_c(uint8_t *dstU, \
409  uint8_t *dstV, \
410  ptrdiff_t stride, int fE, \
411  int fI, int hev_thresh) \
412 { \
413  vpn ## _ ## dir ## _loop_filter8_c(dstU, stride, fE, fI, hev_thresh); \
414  vpn ## _ ## dir ## _loop_filter8_c(dstV, stride, fE, fI, hev_thresh); \
415 } \
416  \
417 static void vpn ## _ ## dir ## _loop_filter8uv_inner_c(uint8_t *dstU, \
418  uint8_t *dstV, \
419  ptrdiff_t stride, \
420  int fE, int fI, \
421  int hev_thresh) \
422 { \
423  vpn ## _ ## dir ## _loop_filter8_inner_c(dstU, stride, fE, fI, \
424  hev_thresh); \
425  vpn ## _ ## dir ## _loop_filter8_inner_c(dstV, stride, fE, fI, \
426  hev_thresh); \
427 }
428 
429 #define LOOP_FILTER_SIMPLE(vpn) \
430 static void vpn ## _v_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, \
431  int flim) \
432 { \
433  int i; \
434  for (i = 0; i < 16; i++) \
435  if (vpn ## _simple_limit(dst + i, stride, flim)) \
436  vpn ## _filter_common(dst + i, stride, 1); \
437 } \
438  \
439 static void vpn ## _h_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, \
440  int flim) \
441 { \
442  int i; \
443  for (i = 0; i < 16; i++) \
444  if (vpn ## _simple_limit(dst + i * stride, 1, flim)) \
445  vpn ## _filter_common(dst + i * stride, 1, 1); \
446 }
447 
448 #define LOOP_FILTERS(vpn) \
449  LOOP_FILTER(vpn, v, 16, 1, stride, ) \
450  LOOP_FILTER(vpn, h, 16, stride, 1, ) \
451  UV_LOOP_FILTER(vpn, v, 1, stride) \
452  UV_LOOP_FILTER(vpn, h, stride, 1) \
453  LOOP_FILTER_SIMPLE(vpn) \
454 
455 static const uint8_t subpel_filters[7][6] = {
456  { 0, 6, 123, 12, 1, 0 },
457  { 2, 11, 108, 36, 8, 1 },
458  { 0, 9, 93, 50, 6, 0 },
459  { 3, 16, 77, 77, 16, 3 },
460  { 0, 6, 50, 93, 9, 0 },
461  { 1, 8, 36, 108, 11, 2 },
462  { 0, 1, 12, 123, 6, 0 },
463 };
464 
465 #define PUT_PIXELS(WIDTH) \
466 static void put_vp8_pixels ## WIDTH ## _c(uint8_t *dst, ptrdiff_t dststride, \
467  uint8_t *src, ptrdiff_t srcstride, \
468  int h, int x, int y) \
469 { \
470  int i; \
471  for (i = 0; i < h; i++, dst += dststride, src += srcstride) \
472  memcpy(dst, src, WIDTH); \
473 }
474 
475 PUT_PIXELS(16)
476 PUT_PIXELS(8)
477 PUT_PIXELS(4)
478 
479 #define FILTER_6TAP(src, F, stride) \
480  cm[(F[2] * src[x + 0 * stride] - F[1] * src[x - 1 * stride] + \
481  F[0] * src[x - 2 * stride] + F[3] * src[x + 1 * stride] - \
482  F[4] * src[x + 2 * stride] + F[5] * src[x + 3 * stride] + 64) >> 7]
483 
484 #define FILTER_4TAP(src, F, stride) \
485  cm[(F[2] * src[x + 0 * stride] - F[1] * src[x - 1 * stride] + \
486  F[3] * src[x + 1 * stride] - F[4] * src[x + 2 * stride] + 64) >> 7]
487 
488 #define VP8_EPEL_H(SIZE, TAPS) \
489 static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, \
490  ptrdiff_t dststride, \
491  uint8_t *src, \
492  ptrdiff_t srcstride, \
493  int h, int mx, int my) \
494 { \
495  const uint8_t *filter = subpel_filters[mx - 1]; \
496  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; \
497  int x, y; \
498  for (y = 0; y < h; y++) { \
499  for (x = 0; x < SIZE; x++) \
500  dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1); \
501  dst += dststride; \
502  src += srcstride; \
503  } \
504 }
505 
506 #define VP8_EPEL_V(SIZE, TAPS) \
507 static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, \
508  ptrdiff_t dststride, \
509  uint8_t *src, \
510  ptrdiff_t srcstride, \
511  int h, int mx, int my) \
512 { \
513  const uint8_t *filter = subpel_filters[my - 1]; \
514  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; \
515  int x, y; \
516  for (y = 0; y < h; y++) { \
517  for (x = 0; x < SIZE; x++) \
518  dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride); \
519  dst += dststride; \
520  src += srcstride; \
521  } \
522 }
523 
524 #define VP8_EPEL_HV(SIZE, HTAPS, VTAPS) \
525 static void \
526 put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst, \
527  ptrdiff_t dststride, \
528  uint8_t *src, \
529  ptrdiff_t srcstride, \
530  int h, int mx, \
531  int my) \
532 { \
533  const uint8_t *filter = subpel_filters[mx - 1]; \
534  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; \
535  int x, y; \
536  uint8_t tmp_array[(2 * SIZE + VTAPS - 1) * SIZE]; \
537  uint8_t *tmp = tmp_array; \
538  src -= (2 - (VTAPS == 4)) * srcstride; \
539  \
540  for (y = 0; y < h + VTAPS - 1; y++) { \
541  for (x = 0; x < SIZE; x++) \
542  tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1); \
543  tmp += SIZE; \
544  src += srcstride; \
545  } \
546  tmp = tmp_array + (2 - (VTAPS == 4)) * SIZE; \
547  filter = subpel_filters[my - 1]; \
548  \
549  for (y = 0; y < h; y++) { \
550  for (x = 0; x < SIZE; x++) \
551  dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE); \
552  dst += dststride; \
553  tmp += SIZE; \
554  } \
555 }
556 
557 VP8_EPEL_H(16, 4)
558 VP8_EPEL_H(8, 4)
559 VP8_EPEL_H(4, 4)
560 VP8_EPEL_H(16, 6)
561 VP8_EPEL_H(8, 6)
562 VP8_EPEL_H(4, 6)
563 VP8_EPEL_V(16, 4)
564 VP8_EPEL_V(8, 4)
565 VP8_EPEL_V(4, 4)
566 VP8_EPEL_V(16, 6)
567 VP8_EPEL_V(8, 6)
568 VP8_EPEL_V(4, 6)
569 
570 VP8_EPEL_HV(16, 4, 4)
571 VP8_EPEL_HV(8, 4, 4)
572 VP8_EPEL_HV(4, 4, 4)
573 VP8_EPEL_HV(16, 4, 6)
574 VP8_EPEL_HV(8, 4, 6)
575 VP8_EPEL_HV(4, 4, 6)
576 VP8_EPEL_HV(16, 6, 4)
577 VP8_EPEL_HV(8, 6, 4)
578 VP8_EPEL_HV(4, 6, 4)
579 VP8_EPEL_HV(16, 6, 6)
580 VP8_EPEL_HV(8, 6, 6)
581 VP8_EPEL_HV(4, 6, 6)
582 
583 #define VP8_BILINEAR(SIZE) \
584 static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, ptrdiff_t dstride, \
585  uint8_t *src, ptrdiff_t sstride, \
586  int h, int mx, int my) \
587 { \
588  int a = 8 - mx, b = mx; \
589  int x, y; \
590  for (y = 0; y < h; y++) { \
591  for (x = 0; x < SIZE; x++) \
592  dst[x] = (a * src[x] + b * src[x + 1] + 4) >> 3; \
593  dst += dstride; \
594  src += sstride; \
595  } \
596 } \
597  \
598 static void put_vp8_bilinear ## SIZE ## _v_c(uint8_t *dst, ptrdiff_t dstride, \
599  uint8_t *src, ptrdiff_t sstride, \
600  int h, int mx, int my) \
601 { \
602  int c = 8 - my, d = my; \
603  int x, y; \
604  for (y = 0; y < h; y++) { \
605  for (x = 0; x < SIZE; x++) \
606  dst[x] = (c * src[x] + d * src[x + sstride] + 4) >> 3; \
607  dst += dstride; \
608  src += sstride; \
609  } \
610 } \
611  \
612 static void put_vp8_bilinear ## SIZE ## _hv_c(uint8_t *dst, \
613  ptrdiff_t dstride, \
614  uint8_t *src, \
615  ptrdiff_t sstride, \
616  int h, int mx, int my) \
617 { \
618  int a = 8 - mx, b = mx; \
619  int c = 8 - my, d = my; \
620  int x, y; \
621  uint8_t tmp_array[(2 * SIZE + 1) * SIZE]; \
622  uint8_t *tmp = tmp_array; \
623  for (y = 0; y < h + 1; y++) { \
624  for (x = 0; x < SIZE; x++) \
625  tmp[x] = (a * src[x] + b * src[x + 1] + 4) >> 3; \
626  tmp += SIZE; \
627  src += sstride; \
628  } \
629  tmp = tmp_array; \
630  for (y = 0; y < h; y++) { \
631  for (x = 0; x < SIZE; x++) \
632  dst[x] = (c * tmp[x] + d * tmp[x + SIZE] + 4) >> 3; \
633  dst += dstride; \
634  tmp += SIZE; \
635  } \
636 }
637 
638 VP8_BILINEAR(16)
639 VP8_BILINEAR(8)
640 VP8_BILINEAR(4)
641 
642 #define VP78_MC_FUNC(IDX, SIZE) \
643  dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
644  dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c; \
645  dsp->put_vp8_epel_pixels_tab[IDX][0][2] = put_vp8_epel ## SIZE ## _h6_c; \
646  dsp->put_vp8_epel_pixels_tab[IDX][1][0] = put_vp8_epel ## SIZE ## _v4_c; \
647  dsp->put_vp8_epel_pixels_tab[IDX][1][1] = put_vp8_epel ## SIZE ## _h4v4_c; \
648  dsp->put_vp8_epel_pixels_tab[IDX][1][2] = put_vp8_epel ## SIZE ## _h6v4_c; \
649  dsp->put_vp8_epel_pixels_tab[IDX][2][0] = put_vp8_epel ## SIZE ## _v6_c; \
650  dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \
651  dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c
652 
653 #define VP78_BILINEAR_MC_FUNC(IDX, SIZE) \
654  dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
655  dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \
656  dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \
657  dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \
658  dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
659  dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \
660  dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \
661  dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
662  dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c
663 
664 av_cold void ff_vp78dsp_init(VP8DSPContext *dsp)
665 {
666  VP78_MC_FUNC(0, 16);
667  VP78_MC_FUNC(1, 8);
668  VP78_MC_FUNC(2, 4);
669 
670  VP78_BILINEAR_MC_FUNC(0, 16);
671  VP78_BILINEAR_MC_FUNC(1, 8);
672  VP78_BILINEAR_MC_FUNC(2, 4);
673 
674  if (ARCH_ARM)
675  ff_vp78dsp_init_arm(dsp);
676  if (ARCH_PPC)
677  ff_vp78dsp_init_ppc(dsp);
678  if (ARCH_X86)
679  ff_vp78dsp_init_x86(dsp);
680 }
681 
682 #if CONFIG_VP7_DECODER
683 LOOP_FILTERS(vp7)
684 
685 av_cold void ff_vp7dsp_init(VP8DSPContext *dsp)
686 {
687  dsp->vp8_luma_dc_wht = vp7_luma_dc_wht_c;
688  dsp->vp8_luma_dc_wht_dc = vp7_luma_dc_wht_dc_c;
689  dsp->vp8_idct_add = vp7_idct_add_c;
690  dsp->vp8_idct_dc_add = vp7_idct_dc_add_c;
691  dsp->vp8_idct_dc_add4y = vp7_idct_dc_add4y_c;
692  dsp->vp8_idct_dc_add4uv = vp7_idct_dc_add4uv_c;
693 
694  dsp->vp8_v_loop_filter16y = vp7_v_loop_filter16_c;
695  dsp->vp8_h_loop_filter16y = vp7_h_loop_filter16_c;
696  dsp->vp8_v_loop_filter8uv = vp7_v_loop_filter8uv_c;
697  dsp->vp8_h_loop_filter8uv = vp7_h_loop_filter8uv_c;
698 
699  dsp->vp8_v_loop_filter16y_inner = vp7_v_loop_filter16_inner_c;
700  dsp->vp8_h_loop_filter16y_inner = vp7_h_loop_filter16_inner_c;
701  dsp->vp8_v_loop_filter8uv_inner = vp7_v_loop_filter8uv_inner_c;
702  dsp->vp8_h_loop_filter8uv_inner = vp7_h_loop_filter8uv_inner_c;
703 
704  dsp->vp8_v_loop_filter_simple = vp7_v_loop_filter_simple_c;
705  dsp->vp8_h_loop_filter_simple = vp7_h_loop_filter_simple_c;
706 }
707 #endif /* CONFIG_VP7_DECODER */
708 
709 #if CONFIG_VP8_DECODER
710 LOOP_FILTERS(vp8)
711 
712 av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
713 {
714  dsp->vp8_luma_dc_wht = vp8_luma_dc_wht_c;
715  dsp->vp8_luma_dc_wht_dc = vp8_luma_dc_wht_dc_c;
716  dsp->vp8_idct_add = vp8_idct_add_c;
717  dsp->vp8_idct_dc_add = vp8_idct_dc_add_c;
718  dsp->vp8_idct_dc_add4y = vp8_idct_dc_add4y_c;
719  dsp->vp8_idct_dc_add4uv = vp8_idct_dc_add4uv_c;
720 
721  dsp->vp8_v_loop_filter16y = vp8_v_loop_filter16_c;
722  dsp->vp8_h_loop_filter16y = vp8_h_loop_filter16_c;
723  dsp->vp8_v_loop_filter8uv = vp8_v_loop_filter8uv_c;
724  dsp->vp8_h_loop_filter8uv = vp8_h_loop_filter8uv_c;
725 
726  dsp->vp8_v_loop_filter16y_inner = vp8_v_loop_filter16_inner_c;
727  dsp->vp8_h_loop_filter16y_inner = vp8_h_loop_filter16_inner_c;
728  dsp->vp8_v_loop_filter8uv_inner = vp8_v_loop_filter8uv_inner_c;
729  dsp->vp8_h_loop_filter8uv_inner = vp8_h_loop_filter8uv_inner_c;
730 
731  dsp->vp8_v_loop_filter_simple = vp8_v_loop_filter_simple_c;
732  dsp->vp8_h_loop_filter_simple = vp8_h_loop_filter_simple_c;
733 
734  if (ARCH_ARM)
735  ff_vp8dsp_init_arm(dsp);
736  if (ARCH_X86)
737  ff_vp8dsp_init_x86(dsp);
738 }
739 #endif /* CONFIG_VP8_DECODER */
Generated on Sun Mar 8 2015 02:35:02 for FFmpeg by   doxygen 1.8.2