vp8dsp.c
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1 /*
2  * Copyright (C) 2010 David Conrad
3  * Copyright (C) 2010 Ronald S. Bultje
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  * VP8 compatible video decoder
25  */
26 
27 #include "dsputil.h"
28 #include "vp8dsp.h"
29 #include "libavutil/common.h"
30 
31 // TODO: Maybe add dequant
32 static void vp8_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
33 {
34  int i, t0, t1, t2, t3;
35 
36  for (i = 0; i < 4; i++) {
37  t0 = dc[0*4+i] + dc[3*4+i];
38  t1 = dc[1*4+i] + dc[2*4+i];
39  t2 = dc[1*4+i] - dc[2*4+i];
40  t3 = dc[0*4+i] - dc[3*4+i];
41 
42  dc[0*4+i] = t0 + t1;
43  dc[1*4+i] = t3 + t2;
44  dc[2*4+i] = t0 - t1;
45  dc[3*4+i] = t3 - t2;
46  }
47 
48  for (i = 0; i < 4; i++) {
49  t0 = dc[i*4+0] + dc[i*4+3] + 3; // rounding
50  t1 = dc[i*4+1] + dc[i*4+2];
51  t2 = dc[i*4+1] - dc[i*4+2];
52  t3 = dc[i*4+0] - dc[i*4+3] + 3; // rounding
53  dc[i*4+0] = 0;
54  dc[i*4+1] = 0;
55  dc[i*4+2] = 0;
56  dc[i*4+3] = 0;
57 
58  block[i][0][0] = (t0 + t1) >> 3;
59  block[i][1][0] = (t3 + t2) >> 3;
60  block[i][2][0] = (t0 - t1) >> 3;
61  block[i][3][0] = (t3 - t2) >> 3;
62  }
63 }
64 
65 static void vp8_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])
66 {
67  int i, val = (dc[0] + 3) >> 3;
68  dc[0] = 0;
69 
70  for (i = 0; i < 4; i++) {
71  block[i][0][0] = val;
72  block[i][1][0] = val;
73  block[i][2][0] = val;
74  block[i][3][0] = val;
75  }
76 }
77 
78 #define MUL_20091(a) ((((a)*20091) >> 16) + (a))
79 #define MUL_35468(a) (((a)*35468) >> 16)
80 
81 static void vp8_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
82 {
83  int i, t0, t1, t2, t3;
84  int16_t tmp[16];
85 
86  for (i = 0; i < 4; i++) {
87  t0 = block[0*4+i] + block[2*4+i];
88  t1 = block[0*4+i] - block[2*4+i];
89  t2 = MUL_35468(block[1*4+i]) - MUL_20091(block[3*4+i]);
90  t3 = MUL_20091(block[1*4+i]) + MUL_35468(block[3*4+i]);
91  block[0*4+i] = 0;
92  block[1*4+i] = 0;
93  block[2*4+i] = 0;
94  block[3*4+i] = 0;
95 
96  tmp[i*4+0] = t0 + t3;
97  tmp[i*4+1] = t1 + t2;
98  tmp[i*4+2] = t1 - t2;
99  tmp[i*4+3] = t0 - t3;
100  }
101 
102  for (i = 0; i < 4; i++) {
103  t0 = tmp[0*4+i] + tmp[2*4+i];
104  t1 = tmp[0*4+i] - tmp[2*4+i];
105  t2 = MUL_35468(tmp[1*4+i]) - MUL_20091(tmp[3*4+i]);
106  t3 = MUL_20091(tmp[1*4+i]) + MUL_35468(tmp[3*4+i]);
107 
108  dst[0] = av_clip_uint8(dst[0] + ((t0 + t3 + 4) >> 3));
109  dst[1] = av_clip_uint8(dst[1] + ((t1 + t2 + 4) >> 3));
110  dst[2] = av_clip_uint8(dst[2] + ((t1 - t2 + 4) >> 3));
111  dst[3] = av_clip_uint8(dst[3] + ((t0 - t3 + 4) >> 3));
112  dst += stride;
113  }
114 }
115 
116 static void vp8_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
117 {
118  int i, dc = (block[0] + 4) >> 3;
119  block[0] = 0;
120 
121  for (i = 0; i < 4; i++) {
122  dst[0] = av_clip_uint8(dst[0] + dc);
123  dst[1] = av_clip_uint8(dst[1] + dc);
124  dst[2] = av_clip_uint8(dst[2] + dc);
125  dst[3] = av_clip_uint8(dst[3] + dc);
126  dst += stride;
127  }
128 }
129 
130 static void vp8_idct_dc_add4uv_c(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
131 {
132  vp8_idct_dc_add_c(dst+stride*0+0, block[0], stride);
133  vp8_idct_dc_add_c(dst+stride*0+4, block[1], stride);
134  vp8_idct_dc_add_c(dst+stride*4+0, block[2], stride);
135  vp8_idct_dc_add_c(dst+stride*4+4, block[3], stride);
136 }
137 
138 static void vp8_idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
139 {
140  vp8_idct_dc_add_c(dst+ 0, block[0], stride);
141  vp8_idct_dc_add_c(dst+ 4, block[1], stride);
142  vp8_idct_dc_add_c(dst+ 8, block[2], stride);
143  vp8_idct_dc_add_c(dst+12, block[3], stride);
144 }
145 
146 // because I like only having two parameters to pass functions...
147 #define LOAD_PIXELS\
148  int av_unused p3 = p[-4*stride];\
149  int av_unused p2 = p[-3*stride];\
150  int av_unused p1 = p[-2*stride];\
151  int av_unused p0 = p[-1*stride];\
152  int av_unused q0 = p[ 0*stride];\
153  int av_unused q1 = p[ 1*stride];\
154  int av_unused q2 = p[ 2*stride];\
155  int av_unused q3 = p[ 3*stride];
156 
157 #define clip_int8(n) (cm[n+0x80]-0x80)
158 
159 static av_always_inline void filter_common(uint8_t *p, ptrdiff_t stride, int is4tap)
160 {
161  LOAD_PIXELS
162  int a, f1, f2;
163  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
164 
165  a = 3*(q0 - p0);
166 
167  if (is4tap)
168  a += clip_int8(p1 - q1);
169 
170  a = clip_int8(a);
171 
172  // We deviate from the spec here with c(a+3) >> 3
173  // since that's what libvpx does.
174  f1 = FFMIN(a+4, 127) >> 3;
175  f2 = FFMIN(a+3, 127) >> 3;
176 
177  // Despite what the spec says, we do need to clamp here to
178  // be bitexact with libvpx.
179  p[-1*stride] = cm[p0 + f2];
180  p[ 0*stride] = cm[q0 - f1];
181 
182  // only used for _inner on blocks without high edge variance
183  if (!is4tap) {
184  a = (f1+1)>>1;
185  p[-2*stride] = cm[p1 + a];
186  p[ 1*stride] = cm[q1 - a];
187  }
188 }
189 
190 static av_always_inline int simple_limit(uint8_t *p, ptrdiff_t stride, int flim)
191 {
192  LOAD_PIXELS
193  return 2*FFABS(p0-q0) + (FFABS(p1-q1) >> 1) <= flim;
194 }
195 
196 /**
197  * E - limit at the macroblock edge
198  * I - limit for interior difference
199  */
200 static av_always_inline int normal_limit(uint8_t *p, ptrdiff_t stride, int E, int I)
201 {
202  LOAD_PIXELS
203  return simple_limit(p, stride, E)
204  && FFABS(p3-p2) <= I && FFABS(p2-p1) <= I && FFABS(p1-p0) <= I
205  && FFABS(q3-q2) <= I && FFABS(q2-q1) <= I && FFABS(q1-q0) <= I;
206 }
207 
208 // high edge variance
209 static av_always_inline int hev(uint8_t *p, ptrdiff_t stride, int thresh)
210 {
211  LOAD_PIXELS
212  return FFABS(p1-p0) > thresh || FFABS(q1-q0) > thresh;
213 }
214 
215 static av_always_inline void filter_mbedge(uint8_t *p, ptrdiff_t stride)
216 {
217  int a0, a1, a2, w;
218  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
219 
220  LOAD_PIXELS
221 
222  w = clip_int8(p1-q1);
223  w = clip_int8(w + 3*(q0-p0));
224 
225  a0 = (27*w + 63) >> 7;
226  a1 = (18*w + 63) >> 7;
227  a2 = ( 9*w + 63) >> 7;
228 
229  p[-3*stride] = cm[p2 + a2];
230  p[-2*stride] = cm[p1 + a1];
231  p[-1*stride] = cm[p0 + a0];
232  p[ 0*stride] = cm[q0 - a0];
233  p[ 1*stride] = cm[q1 - a1];
234  p[ 2*stride] = cm[q2 - a2];
235 }
236 
237 #define LOOP_FILTER(dir, size, stridea, strideb, maybe_inline) \
238 static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _c(uint8_t *dst, ptrdiff_t stride,\
239  int flim_E, int flim_I, int hev_thresh)\
240 {\
241  int i;\
242 \
243  for (i = 0; i < size; i++)\
244  if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
245  if (hev(dst+i*stridea, strideb, hev_thresh))\
246  filter_common(dst+i*stridea, strideb, 1);\
247  else\
248  filter_mbedge(dst+i*stridea, strideb);\
249  }\
250 }\
251 \
252 static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _inner_c(uint8_t *dst, ptrdiff_t stride,\
253  int flim_E, int flim_I, int hev_thresh)\
254 {\
255  int i;\
256 \
257  for (i = 0; i < size; i++)\
258  if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
259  int hv = hev(dst+i*stridea, strideb, hev_thresh);\
260  if (hv) \
261  filter_common(dst+i*stridea, strideb, 1);\
262  else \
263  filter_common(dst+i*stridea, strideb, 0);\
264  }\
265 }
266 
267 LOOP_FILTER(v, 16, 1, stride,)
268 LOOP_FILTER(h, 16, stride, 1,)
269 
270 #define UV_LOOP_FILTER(dir, stridea, strideb) \
271 LOOP_FILTER(dir, 8, stridea, strideb, av_always_inline) \
272 static void vp8_ ## dir ## _loop_filter8uv_c(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,\
273  int fE, int fI, int hev_thresh)\
274 {\
275  vp8_ ## dir ## _loop_filter8_c(dstU, stride, fE, fI, hev_thresh);\
276  vp8_ ## dir ## _loop_filter8_c(dstV, stride, fE, fI, hev_thresh);\
277 }\
278 static void vp8_ ## dir ## _loop_filter8uv_inner_c(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,\
279  int fE, int fI, int hev_thresh)\
280 {\
281  vp8_ ## dir ## _loop_filter8_inner_c(dstU, stride, fE, fI, hev_thresh);\
282  vp8_ ## dir ## _loop_filter8_inner_c(dstV, stride, fE, fI, hev_thresh);\
283 }
284 
285 UV_LOOP_FILTER(v, 1, stride)
286 UV_LOOP_FILTER(h, stride, 1)
287 
288 static void vp8_v_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, int flim)
289 {
290  int i;
291 
292  for (i = 0; i < 16; i++)
293  if (simple_limit(dst+i, stride, flim))
294  filter_common(dst+i, stride, 1);
295 }
296 
297 static void vp8_h_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, int flim)
298 {
299  int i;
300 
301  for (i = 0; i < 16; i++)
302  if (simple_limit(dst+i*stride, 1, flim))
303  filter_common(dst+i*stride, 1, 1);
304 }
305 
306 static const uint8_t subpel_filters[7][6] = {
307  { 0, 6, 123, 12, 1, 0 },
308  { 2, 11, 108, 36, 8, 1 },
309  { 0, 9, 93, 50, 6, 0 },
310  { 3, 16, 77, 77, 16, 3 },
311  { 0, 6, 50, 93, 9, 0 },
312  { 1, 8, 36, 108, 11, 2 },
313  { 0, 1, 12, 123, 6, 0 },
314 };
315 
316 #define PUT_PIXELS(WIDTH) \
317 static void put_vp8_pixels ## WIDTH ##_c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int x, int y) { \
318  int i; \
319  for (i = 0; i < h; i++, dst+= dststride, src+= srcstride) { \
320  memcpy(dst, src, WIDTH); \
321  } \
322 }
323 
324 PUT_PIXELS(16)
325 PUT_PIXELS(8)
326 PUT_PIXELS(4)
327 
328 #define FILTER_6TAP(src, F, stride) \
329  cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + F[0]*src[x-2*stride] + \
330  F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + F[5]*src[x+3*stride] + 64) >> 7]
331 
332 #define FILTER_4TAP(src, F, stride) \
333  cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + \
334  F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + 64) >> 7]
335 
336 #define VP8_EPEL_H(SIZE, TAPS) \
337 static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
338 { \
339  const uint8_t *filter = subpel_filters[mx-1]; \
340  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
341  int x, y; \
342 \
343  for (y = 0; y < h; y++) { \
344  for (x = 0; x < SIZE; x++) \
345  dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1); \
346  dst += dststride; \
347  src += srcstride; \
348  } \
349 }
350 #define VP8_EPEL_V(SIZE, TAPS) \
351 static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
352 { \
353  const uint8_t *filter = subpel_filters[my-1]; \
354  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
355  int x, y; \
356 \
357  for (y = 0; y < h; y++) { \
358  for (x = 0; x < SIZE; x++) \
359  dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride); \
360  dst += dststride; \
361  src += srcstride; \
362  } \
363 }
364 #define VP8_EPEL_HV(SIZE, HTAPS, VTAPS) \
365 static void put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, ptrdiff_t srcstride, int h, int mx, int my) \
366 { \
367  const uint8_t *filter = subpel_filters[mx-1]; \
368  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
369  int x, y; \
370  uint8_t tmp_array[(2*SIZE+VTAPS-1)*SIZE]; \
371  uint8_t *tmp = tmp_array; \
372  src -= (2-(VTAPS==4))*srcstride; \
373 \
374  for (y = 0; y < h+VTAPS-1; y++) { \
375  for (x = 0; x < SIZE; x++) \
376  tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1); \
377  tmp += SIZE; \
378  src += srcstride; \
379  } \
380 \
381  tmp = tmp_array + (2-(VTAPS==4))*SIZE; \
382  filter = subpel_filters[my-1]; \
383 \
384  for (y = 0; y < h; y++) { \
385  for (x = 0; x < SIZE; x++) \
386  dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE); \
387  dst += dststride; \
388  tmp += SIZE; \
389  } \
390 }
391 
392 VP8_EPEL_H(16, 4)
393 VP8_EPEL_H(8, 4)
394 VP8_EPEL_H(4, 4)
395 VP8_EPEL_H(16, 6)
396 VP8_EPEL_H(8, 6)
397 VP8_EPEL_H(4, 6)
398 VP8_EPEL_V(16, 4)
399 VP8_EPEL_V(8, 4)
400 VP8_EPEL_V(4, 4)
401 VP8_EPEL_V(16, 6)
402 VP8_EPEL_V(8, 6)
403 VP8_EPEL_V(4, 6)
404 VP8_EPEL_HV(16, 4, 4)
405 VP8_EPEL_HV(8, 4, 4)
406 VP8_EPEL_HV(4, 4, 4)
407 VP8_EPEL_HV(16, 4, 6)
408 VP8_EPEL_HV(8, 4, 6)
409 VP8_EPEL_HV(4, 4, 6)
410 VP8_EPEL_HV(16, 6, 4)
411 VP8_EPEL_HV(8, 6, 4)
412 VP8_EPEL_HV(4, 6, 4)
413 VP8_EPEL_HV(16, 6, 6)
414 VP8_EPEL_HV(8, 6, 6)
415 VP8_EPEL_HV(4, 6, 6)
416 
417 #define VP8_BILINEAR(SIZE) \
418 static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, ptrdiff_t stride, uint8_t *src, ptrdiff_t s2, int h, int mx, int my) \
419 { \
420  int a = 8-mx, b = mx; \
421  int x, y; \
422 \
423  for (y = 0; y < h; y++) { \
424  for (x = 0; x < SIZE; x++) \
425  dst[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
426  dst += stride; \
427  src += stride; \
428  } \
429 } \
430 static void put_vp8_bilinear ## SIZE ## _v_c(uint8_t *dst, ptrdiff_t stride, uint8_t *src, ptrdiff_t s2, int h, int mx, int my) \
431 { \
432  int c = 8-my, d = my; \
433  int x, y; \
434 \
435  for (y = 0; y < h; y++) { \
436  for (x = 0; x < SIZE; x++) \
437  dst[x] = (c*src[x] + d*src[x+stride] + 4) >> 3; \
438  dst += stride; \
439  src += stride; \
440  } \
441 } \
442 \
443 static void put_vp8_bilinear ## SIZE ## _hv_c(uint8_t *dst, ptrdiff_t stride, uint8_t *src, ptrdiff_t s2, int h, int mx, int my) \
444 { \
445  int a = 8-mx, b = mx; \
446  int c = 8-my, d = my; \
447  int x, y; \
448  uint8_t tmp_array[(2*SIZE+1)*SIZE]; \
449  uint8_t *tmp = tmp_array; \
450 \
451  for (y = 0; y < h+1; y++) { \
452  for (x = 0; x < SIZE; x++) \
453  tmp[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
454  tmp += SIZE; \
455  src += stride; \
456  } \
457 \
458  tmp = tmp_array; \
459 \
460  for (y = 0; y < h; y++) { \
461  for (x = 0; x < SIZE; x++) \
462  dst[x] = (c*tmp[x] + d*tmp[x+SIZE] + 4) >> 3; \
463  dst += stride; \
464  tmp += SIZE; \
465  } \
466 }
467 
468 VP8_BILINEAR(16)
469 VP8_BILINEAR(8)
470 VP8_BILINEAR(4)
471 
472 #define VP8_MC_FUNC(IDX, SIZE) \
473  dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
474  dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c; \
475  dsp->put_vp8_epel_pixels_tab[IDX][0][2] = put_vp8_epel ## SIZE ## _h6_c; \
476  dsp->put_vp8_epel_pixels_tab[IDX][1][0] = put_vp8_epel ## SIZE ## _v4_c; \
477  dsp->put_vp8_epel_pixels_tab[IDX][1][1] = put_vp8_epel ## SIZE ## _h4v4_c; \
478  dsp->put_vp8_epel_pixels_tab[IDX][1][2] = put_vp8_epel ## SIZE ## _h6v4_c; \
479  dsp->put_vp8_epel_pixels_tab[IDX][2][0] = put_vp8_epel ## SIZE ## _v6_c; \
480  dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \
481  dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c
482 
483 #define VP8_BILINEAR_MC_FUNC(IDX, SIZE) \
484  dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
485  dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \
486  dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \
487  dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \
488  dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
489  dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \
490  dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \
491  dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
492  dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c
493 
494 av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
495 {
496  dsp->vp8_luma_dc_wht = vp8_luma_dc_wht_c;
497  dsp->vp8_luma_dc_wht_dc = vp8_luma_dc_wht_dc_c;
498  dsp->vp8_idct_add = vp8_idct_add_c;
499  dsp->vp8_idct_dc_add = vp8_idct_dc_add_c;
500  dsp->vp8_idct_dc_add4y = vp8_idct_dc_add4y_c;
501  dsp->vp8_idct_dc_add4uv = vp8_idct_dc_add4uv_c;
502 
503  dsp->vp8_v_loop_filter16y = vp8_v_loop_filter16_c;
504  dsp->vp8_h_loop_filter16y = vp8_h_loop_filter16_c;
505  dsp->vp8_v_loop_filter8uv = vp8_v_loop_filter8uv_c;
506  dsp->vp8_h_loop_filter8uv = vp8_h_loop_filter8uv_c;
507 
508  dsp->vp8_v_loop_filter16y_inner = vp8_v_loop_filter16_inner_c;
509  dsp->vp8_h_loop_filter16y_inner = vp8_h_loop_filter16_inner_c;
510  dsp->vp8_v_loop_filter8uv_inner = vp8_v_loop_filter8uv_inner_c;
511  dsp->vp8_h_loop_filter8uv_inner = vp8_h_loop_filter8uv_inner_c;
512 
513  dsp->vp8_v_loop_filter_simple = vp8_v_loop_filter_simple_c;
514  dsp->vp8_h_loop_filter_simple = vp8_h_loop_filter_simple_c;
515 
516  VP8_MC_FUNC(0, 16);
517  VP8_MC_FUNC(1, 8);
518  VP8_MC_FUNC(2, 4);
519 
520  VP8_BILINEAR_MC_FUNC(0, 16);
521  VP8_BILINEAR_MC_FUNC(1, 8);
522  VP8_BILINEAR_MC_FUNC(2, 4);
523 
524  if (ARCH_X86)
525  ff_vp8dsp_init_x86(dsp);
526  if (HAVE_ALTIVEC)
527  ff_vp8dsp_init_altivec(dsp);
528  if (ARCH_ARM)
529  ff_vp8dsp_init_arm(dsp);
530 }
vp8_luma_dc_wht_dc_c
static void vp8_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])
Definition: vp8dsp.c:65
vp8_v_loop_filter_simple_c
static void vp8_v_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, int flim)
Definition: vp8dsp.c:288
VP8DSPContext::vp8_idct_dc_add
void(* vp8_idct_dc_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
Definition: vp8dsp.h:41
v
float v
Definition: avf_showspectrum.c:88
ff_cropTbl
#define ff_cropTbl
Definition: motionpixels_tablegen.c:26
VP8_EPEL_V
#define VP8_EPEL_V(SIZE, TAPS)
Definition: vp8dsp.c:350
VP8DSPContext::vp8_idct_dc_add4y
void(* vp8_idct_dc_add4y)(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
Definition: vp8dsp.h:42
a0
#define a0
Definition: regdef.h:46
MAX_NEG_CROP
#define MAX_NEG_CROP
Definition: dsputil.h:47
HAVE_ALTIVEC
#define HAVE_ALTIVEC
Definition: config.h:56
a1
#define a1
Definition: regdef.h:47
VP8DSPContext::vp8_v_loop_filter8uv_inner
void(* vp8_v_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:62
ff_vp8dsp_init_arm
av_cold void ff_vp8dsp_init_arm(VP8DSPContext *dsp)
Definition: vp8dsp_init_arm.c:26
stride
int stride
Definition: mace.c:144
w
output residual component w
Definition: code Kat/hpsmodel.m:23
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_vp8dsp_init_altivec
av_cold void ff_vp8dsp_init_altivec(VP8DSPContext *c)
Definition: vp8dsp_altivec.c:275
av_cold
#define av_cold
Definition: attributes.h:78
VP8DSPContext::vp8_luma_dc_wht_dc
void(* vp8_luma_dc_wht_dc)(int16_t block[4][4][16], int16_t dc[16])
Definition: vp8dsp.h:39
VP8DSPContext::vp8_idct_dc_add4uv
void(* vp8_idct_dc_add4uv)(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
Definition: vp8dsp.h:44
ff_vp8dsp_init
av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
Definition: vp8dsp.c:494
vp8dsp.h
VP8 compatible video decoder.
vp8_idct_dc_add4uv_c
static void vp8_idct_dc_add4uv_c(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
Definition: vp8dsp.c:130
t0
#define t0
Definition: regdef.h:28
VP8_BILINEAR_MC_FUNC
#define VP8_BILINEAR_MC_FUNC(IDX, SIZE)
Definition: vp8dsp.c:483
vp8_luma_dc_wht_c
static void vp8_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
Definition: vp8dsp.c:32
subpel_filters
static const uint8_t subpel_filters[7][6]
Definition: vp8dsp.c:306
vp8_idct_dc_add4y_c
static void vp8_idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16], ptrdiff_t stride)
Definition: vp8dsp.c:138
VP8DSPContext::vp8_v_loop_filter8uv
void(* vp8_v_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:52
cm
#define cm
Definition: dvbsubdec.c:34
f2
f2
Definition: genspecsines3.m:4
VP8_EPEL_H
#define VP8_EPEL_H(SIZE, TAPS)
Definition: vp8dsp.c:336
ARCH_X86
#define ARCH_X86
Definition: config.h:35
vp8_h_loop_filter_simple_c
static void vp8_h_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride, int flim)
Definition: vp8dsp.c:297
VP8DSPContext::vp8_idct_add
void(* vp8_idct_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
Definition: vp8dsp.h:40
t1
#define t1
Definition: regdef.h:29
t3
#define t3
Definition: regdef.h:31
VP8_BILINEAR
#define VP8_BILINEAR(SIZE)
Definition: vp8dsp.c:417
vp8_idct_add_c
static void vp8_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
Definition: vp8dsp.c:81
filter_common
static av_always_inline void filter_common(uint8_t *p, ptrdiff_t stride, int is4tap)
Definition: vp8dsp.c:159
FFMIN
#define FFMIN(a, b)
Definition: common.h:58
ARCH_ARM
#define ARCH_ARM
Definition: config.h:16
VP8DSPContext::vp8_h_loop_filter8uv_inner
void(* vp8_h_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:65
a2
#define a2
Definition: regdef.h:48
FFABS
#define FFABS(a)
Definition: common.h:53
E
#define E
Definition: libavcodec/options_table.h:39
simple_limit
static av_always_inline int simple_limit(uint8_t *p, ptrdiff_t stride, int flim)
Definition: vp8dsp.c:190
MUL_35468
#define MUL_35468(a)
Definition: vp8dsp.c:79
VP8_EPEL_HV
#define VP8_EPEL_HV(SIZE, HTAPS, VTAPS)
Definition: vp8dsp.c:364
VP8DSPContext::vp8_v_loop_filter16y
void(* vp8_v_loop_filter16y)(uint8_t *dst, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:48
dc
FIXME Range Coding of cr are mx and my are Motion Vector top and top right vectors is used as motion vector prediction the used motion vector is the sum of the predictor and(mvx_diff, mvy_diff)*mv_scale Intra DC Predicton block[y][x] dc[1]
Definition: snow.txt:392
VP8_MC_FUNC
#define VP8_MC_FUNC(IDX, SIZE)
Definition: vp8dsp.c:472
i
synthesis window for stochastic i
Definition: code Kat/hpsmodel.m:34
MUL_20091
#define MUL_20091(a)
Definition: vp8dsp.c:78
vp8_idct_dc_add_c
static void vp8_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
Definition: vp8dsp.c:116
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static av_always_inline void filter_mbedge(uint8_t *p, ptrdiff_t stride)
Definition: vp8dsp.c:215
VP8DSPContext::vp8_h_loop_filter8uv
void(* vp8_h_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:54
LOOP_FILTER
#define LOOP_FILTER(dir, size, stridea, strideb, maybe_inline)
Definition: vp8dsp.c:237
ff_vp8dsp_init_x86
void ff_vp8dsp_init_x86(VP8DSPContext *c)
Definition: vp8dsp_init.c:316
UV_LOOP_FILTER
#define UV_LOOP_FILTER(dir, stridea, strideb)
Definition: vp8dsp.c:270
VP8DSPContext::vp8_h_loop_filter16y_inner
void(* vp8_h_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:60
VP8DSPContext::vp8_luma_dc_wht
void(* vp8_luma_dc_wht)(int16_t block[4][4][16], int16_t dc[16])
Definition: vp8dsp.h:38
VP8DSPContext::vp8_v_loop_filter_simple
void(* vp8_v_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim)
Definition: vp8dsp.h:69
VP8DSPContext::vp8_h_loop_filter_simple
void(* vp8_h_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim)
Definition: vp8dsp.h:70
common.h
common internal and external API header
VP8DSPContext::vp8_v_loop_filter16y_inner
void(* vp8_v_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:58
PUT_PIXELS
#define PUT_PIXELS(WIDTH)
Definition: vp8dsp.c:316
normal_limit
static av_always_inline int normal_limit(uint8_t *p, ptrdiff_t stride, int E, int I)
E - limit at the macroblock edge I - limit for interior difference.
Definition: vp8dsp.c:200
dsputil.h
DSP utils.
dst
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
av_always_inline
#define av_always_inline
Definition: attributes.h:41
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#define LOAD_PIXELS
Definition: vp8dsp.c:147
VP8DSPContext::vp8_h_loop_filter16y
void(* vp8_h_loop_filter16y)(uint8_t *dst, ptrdiff_t stride, int flim_E, int flim_I, int hev_thresh)
Definition: vp8dsp.h:50
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#define clip_int8(n)
Definition: vp8dsp.c:157
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static av_always_inline int hev(uint8_t *p, ptrdiff_t stride, int thresh)
Definition: vp8dsp.c:209
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Definition: genspecsines3.m:3
t2
#define t2
Definition: regdef.h:30
a
a
Definition: h264pred_template.c:466
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