1 /*
2  * VP8 DSP functions x86-optimized
3  * Copyright (c) 2010 Ronald S. Bultje <rsbultje@gmail.com>
4  * Copyright (c) 2010 Fiona Glaser <fiona@x264.com>
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 #include "libavutil/attributes.h"
24 #include "libavutil/cpu.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/mem_internal.h"
27 #include "libavutil/x86/cpu.h"
28 #include "libavcodec/vp8dsp.h"
29 
30 #if HAVE_X86ASM
31 
32 /*
33  * MC functions
34  */
35 void ff_put_vp8_epel4_h4_mmxext(uint8_t *dst, ptrdiff_t dststride,
36                                 uint8_t *src, ptrdiff_t srcstride,
37                                 int height, int mx, int my);
38 void ff_put_vp8_epel4_h6_mmxext(uint8_t *dst, ptrdiff_t dststride,
39                                 uint8_t *src, ptrdiff_t srcstride,
40                                 int height, int mx, int my);
41 void ff_put_vp8_epel4_v4_mmxext(uint8_t *dst, ptrdiff_t dststride,
42                                 uint8_t *src, ptrdiff_t srcstride,
43                                 int height, int mx, int my);
44 void ff_put_vp8_epel4_v6_mmxext(uint8_t *dst, ptrdiff_t dststride,
45                                 uint8_t *src, ptrdiff_t srcstride,
46                                 int height, int mx, int my);
47 
48 void ff_put_vp8_epel8_h4_sse2  (uint8_t *dst, ptrdiff_t dststride,
49                                 uint8_t *src, ptrdiff_t srcstride,
50                                 int height, int mx, int my);
51 void ff_put_vp8_epel8_h6_sse2  (uint8_t *dst, ptrdiff_t dststride,
52                                 uint8_t *src, ptrdiff_t srcstride,
53                                 int height, int mx, int my);
54 void ff_put_vp8_epel8_v4_sse2  (uint8_t *dst, ptrdiff_t dststride,
55                                 uint8_t *src, ptrdiff_t srcstride,
56                                 int height, int mx, int my);
57 void ff_put_vp8_epel8_v6_sse2  (uint8_t *dst, ptrdiff_t dststride,
58                                 uint8_t *src, ptrdiff_t srcstride,
59                                 int height, int mx, int my);
60 
61 void ff_put_vp8_epel4_h4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
62                                 uint8_t *src, ptrdiff_t srcstride,
63                                 int height, int mx, int my);
64 void ff_put_vp8_epel4_h6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
65                                 uint8_t *src, ptrdiff_t srcstride,
66                                 int height, int mx, int my);
67 void ff_put_vp8_epel4_v4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
68                                 uint8_t *src, ptrdiff_t srcstride,
69                                 int height, int mx, int my);
70 void ff_put_vp8_epel4_v6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
71                                 uint8_t *src, ptrdiff_t srcstride,
72                                 int height, int mx, int my);
73 void ff_put_vp8_epel8_h4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
74                                 uint8_t *src, ptrdiff_t srcstride,
75                                 int height, int mx, int my);
76 void ff_put_vp8_epel8_h6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
77                                 uint8_t *src, ptrdiff_t srcstride,
78                                 int height, int mx, int my);
79 void ff_put_vp8_epel8_v4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
80                                 uint8_t *src, ptrdiff_t srcstride,
81                                 int height, int mx, int my);
82 void ff_put_vp8_epel8_v6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
83                                 uint8_t *src, ptrdiff_t srcstride,
84                                 int height, int mx, int my);
85 
86 void ff_put_vp8_bilinear4_h_mmxext(uint8_t *dst, ptrdiff_t dststride,
87                                    uint8_t *src, ptrdiff_t srcstride,
88                                    int height, int mx, int my);
89 void ff_put_vp8_bilinear8_h_sse2  (uint8_t *dst, ptrdiff_t dststride,
90                                    uint8_t *src, ptrdiff_t srcstride,
91                                    int height, int mx, int my);
92 void ff_put_vp8_bilinear4_h_ssse3 (uint8_t *dst, ptrdiff_t dststride,
93                                    uint8_t *src, ptrdiff_t srcstride,
94                                    int height, int mx, int my);
95 void ff_put_vp8_bilinear8_h_ssse3 (uint8_t *dst, ptrdiff_t dststride,
96                                    uint8_t *src, ptrdiff_t srcstride,
97                                    int height, int mx, int my);
98 
99 void ff_put_vp8_bilinear4_v_mmxext(uint8_t *dst, ptrdiff_t dststride,
100                                    uint8_t *src, ptrdiff_t srcstride,
101                                    int height, int mx, int my);
102 void ff_put_vp8_bilinear8_v_sse2  (uint8_t *dst, ptrdiff_t dststride,
103                                    uint8_t *src, ptrdiff_t srcstride,
104                                    int height, int mx, int my);
105 void ff_put_vp8_bilinear4_v_ssse3 (uint8_t *dst, ptrdiff_t dststride,
106                                    uint8_t *src, ptrdiff_t srcstride,
107                                    int height, int mx, int my);
108 void ff_put_vp8_bilinear8_v_ssse3 (uint8_t *dst, ptrdiff_t dststride,
109                                    uint8_t *src, ptrdiff_t srcstride,
110                                    int height, int mx, int my);
111 
112 
113 void ff_put_vp8_pixels8_mmx (uint8_t *dst, ptrdiff_t dststride,
114                              uint8_t *src, ptrdiff_t srcstride,
115                              int height, int mx, int my);
116 void ff_put_vp8_pixels16_mmx(uint8_t *dst, ptrdiff_t dststride,
117                              uint8_t *src, ptrdiff_t srcstride,
118                              int height, int mx, int my);
119 void ff_put_vp8_pixels16_sse(uint8_t *dst, ptrdiff_t dststride,
120                              uint8_t *src, ptrdiff_t srcstride,
121                              int height, int mx, int my);
122 
123 #define TAP_W16(OPT, FILTERTYPE, TAPTYPE) \
124 static void ff_put_vp8_ ## FILTERTYPE ## 16_ ## TAPTYPE ## _ ## OPT( \
125     uint8_t *dst,  ptrdiff_t dststride, uint8_t *src, \
126     ptrdiff_t srcstride, int height, int mx, int my) \
127 { \
128     ff_put_vp8_ ## FILTERTYPE ## 8_ ## TAPTYPE ## _ ## OPT( \
129         dst,     dststride, src,     srcstride, height, mx, my); \
130     ff_put_vp8_ ## FILTERTYPE ## 8_ ## TAPTYPE ## _ ## OPT( \
131         dst + 8, dststride, src + 8, srcstride, height, mx, my); \
132 }
133 #define TAP_W8(OPT, FILTERTYPE, TAPTYPE) \
134 static void ff_put_vp8_ ## FILTERTYPE ## 8_ ## TAPTYPE ## _ ## OPT( \
135     uint8_t *dst,  ptrdiff_t dststride, uint8_t *src, \
136     ptrdiff_t srcstride, int height, int mx, int my) \
137 { \
138     ff_put_vp8_ ## FILTERTYPE ## 4_ ## TAPTYPE ## _ ## OPT( \
139         dst,     dststride, src,     srcstride, height, mx, my); \
140     ff_put_vp8_ ## FILTERTYPE ## 4_ ## TAPTYPE ## _ ## OPT( \
141         dst + 4, dststride, src + 4, srcstride, height, mx, my); \
142 }
143 
144 #if ARCH_X86_32
145 TAP_W8 (mmxext, epel, h4)
146 TAP_W8 (mmxext, epel, h6)
147 TAP_W16(mmxext, epel, h6)
148 TAP_W8 (mmxext, epel, v4)
149 TAP_W8 (mmxext, epel, v6)
150 TAP_W16(mmxext, epel, v6)
151 TAP_W8 (mmxext, bilinear, h)
152 TAP_W16(mmxext, bilinear, h)
153 TAP_W8 (mmxext, bilinear, v)
154 TAP_W16(mmxext, bilinear, v)
155 #endif
156 
157 TAP_W16(sse2,  epel, h6)
158 TAP_W16(sse2,  epel, v6)
159 TAP_W16(sse2,  bilinear, h)
160 TAP_W16(sse2,  bilinear, v)
161 
162 TAP_W16(ssse3, epel, h6)
163 TAP_W16(ssse3, epel, v6)
164 TAP_W16(ssse3, bilinear, h)
165 TAP_W16(ssse3, bilinear, v)
166 
167 #define HVTAP(OPT, ALIGN, TAPNUMX, TAPNUMY, SIZE, MAXHEIGHT) \
168 static void ff_put_vp8_epel ## SIZE ## _h ## TAPNUMX ## v ## TAPNUMY ## _ ## OPT( \
169     uint8_t *dst, ptrdiff_t dststride, uint8_t *src, \
170     ptrdiff_t srcstride, int height, int mx, int my) \
171 { \
172     LOCAL_ALIGNED(ALIGN, uint8_t, tmp, [SIZE * (MAXHEIGHT + TAPNUMY - 1)]); \
173     uint8_t *tmpptr = tmp + SIZE * (TAPNUMY / 2 - 1); \
174     src -= srcstride * (TAPNUMY / 2 - 1); \
175     ff_put_vp8_epel ## SIZE ## _h ## TAPNUMX ## _ ## OPT( \
176         tmp, SIZE,      src,    srcstride, height + TAPNUMY - 1, mx, my); \
177     ff_put_vp8_epel ## SIZE ## _v ## TAPNUMY ## _ ## OPT( \
178         dst, dststride, tmpptr, SIZE,      height,               mx, my); \
179 }
180 
181 #if ARCH_X86_32
182 #define HVTAPMMX(x, y) \
183 HVTAP(mmxext, 8, x, y,  4,  8) \
184 HVTAP(mmxext, 8, x, y,  8, 16)
185 
186 HVTAP(mmxext, 8, 6, 6, 16, 16)
187 #else
188 #define HVTAPMMX(x, y) \
189 HVTAP(mmxext, 8, x, y,  4,  8)
190 #endif
191 
192 HVTAPMMX(4, 4)
193 HVTAPMMX(4, 6)
194 HVTAPMMX(6, 4)
195 HVTAPMMX(6, 6)
196 
197 #define HVTAPSSE2(x, y, w) \
198 HVTAP(sse2,  16, x, y, w, 16) \
199 HVTAP(ssse3, 16, x, y, w, 16)
200 
201 HVTAPSSE2(4, 4, 8)
202 HVTAPSSE2(4, 6, 8)
203 HVTAPSSE2(6, 4, 8)
204 HVTAPSSE2(6, 6, 8)
205 HVTAPSSE2(6, 6, 16)
206 
207 HVTAP(ssse3, 16, 4, 4, 4, 8)
208 HVTAP(ssse3, 16, 4, 6, 4, 8)
209 HVTAP(ssse3, 16, 6, 4, 4, 8)
210 HVTAP(ssse3, 16, 6, 6, 4, 8)
211 
212 #define HVBILIN(OPT, ALIGN, SIZE, MAXHEIGHT) \
213 static void ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT( \
214     uint8_t *dst, ptrdiff_t dststride, uint8_t *src, \
215     ptrdiff_t srcstride, int height, int mx, int my) \
216 { \
217     LOCAL_ALIGNED(ALIGN, uint8_t, tmp, [SIZE * (MAXHEIGHT + 2)]); \
218     ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT( \
219         tmp, SIZE,      src, srcstride, height + 1, mx, my); \
220     ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT( \
221         dst, dststride, tmp, SIZE,      height,     mx, my); \
222 }
223 
224 HVBILIN(mmxext,  8,  4,  8)
225 #if ARCH_X86_32
226 HVBILIN(mmxext,  8,  8, 16)
227 HVBILIN(mmxext,  8, 16, 16)
228 #endif
229 HVBILIN(sse2,  8,  8, 16)
230 HVBILIN(sse2,  8, 16, 16)
231 HVBILIN(ssse3, 8,  4,  8)
232 HVBILIN(ssse3, 8,  8, 16)
233 HVBILIN(ssse3, 8, 16, 16)
234 
235 void ff_vp8_idct_dc_add_mmx(uint8_t *dst, int16_t block[16],
236                             ptrdiff_t stride);
237 void ff_vp8_idct_dc_add_sse2(uint8_t *dst, int16_t block[16],
238                              ptrdiff_t stride);
239 void ff_vp8_idct_dc_add_sse4(uint8_t *dst, int16_t block[16],
240                              ptrdiff_t stride);
241 void ff_vp8_idct_dc_add4y_mmx(uint8_t *dst, int16_t block[4][16],
242                                ptrdiff_t stride);
243 void ff_vp8_idct_dc_add4y_sse2(uint8_t *dst, int16_t block[4][16],
244                                ptrdiff_t stride);
245 void ff_vp8_idct_dc_add4uv_mmx(uint8_t *dst, int16_t block[2][16],
246                                ptrdiff_t stride);
247 void ff_vp8_luma_dc_wht_mmx(int16_t block[4][4][16], int16_t dc[16]);
248 void ff_vp8_luma_dc_wht_sse(int16_t block[4][4][16], int16_t dc[16]);
249 void ff_vp8_idct_add_mmx(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
250 void ff_vp8_idct_add_sse(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
251 
252 #define DECLARE_LOOP_FILTER(NAME)                                       \
253 void ff_vp8_v_loop_filter_simple_ ## NAME(uint8_t *dst,                 \
254                                           ptrdiff_t stride,             \
255                                           int flim);                    \
256 void ff_vp8_h_loop_filter_simple_ ## NAME(uint8_t *dst,                 \
257                                           ptrdiff_t stride,             \
258                                           int flim);                    \
259 void ff_vp8_v_loop_filter16y_inner_ ## NAME (uint8_t *dst,              \
260                                              ptrdiff_t stride,          \
261                                              int e, int i, int hvt);    \
262 void ff_vp8_h_loop_filter16y_inner_ ## NAME (uint8_t *dst,              \
263                                              ptrdiff_t stride,          \
264                                              int e, int i, int hvt);    \
265 void ff_vp8_v_loop_filter8uv_inner_ ## NAME (uint8_t *dstU,             \
266                                              uint8_t *dstV,             \
267                                              ptrdiff_t s,               \
268                                              int e, int i, int hvt);    \
269 void ff_vp8_h_loop_filter8uv_inner_ ## NAME (uint8_t *dstU,             \
270                                              uint8_t *dstV,             \
271                                              ptrdiff_t s,               \
272                                              int e, int i, int hvt);    \
273 void ff_vp8_v_loop_filter16y_mbedge_ ## NAME(uint8_t *dst,              \
274                                              ptrdiff_t stride,          \
275                                              int e, int i, int hvt);    \
276 void ff_vp8_h_loop_filter16y_mbedge_ ## NAME(uint8_t *dst,              \
277                                              ptrdiff_t stride,          \
278                                              int e, int i, int hvt);    \
279 void ff_vp8_v_loop_filter8uv_mbedge_ ## NAME(uint8_t *dstU,             \
280                                              uint8_t *dstV,             \
281                                              ptrdiff_t s,               \
282                                              int e, int i, int hvt);    \
283 void ff_vp8_h_loop_filter8uv_mbedge_ ## NAME(uint8_t *dstU,             \
284                                              uint8_t *dstV,             \
285                                              ptrdiff_t s,               \
286                                              int e, int i, int hvt);
287 
288 DECLARE_LOOP_FILTER(mmx)
DECLARE_LOOP_FILTER(mmxext)289 DECLARE_LOOP_FILTER(mmxext)
290 DECLARE_LOOP_FILTER(sse2)
291 DECLARE_LOOP_FILTER(ssse3)
292 DECLARE_LOOP_FILTER(sse4)
293 
294 #endif /* HAVE_X86ASM */
295 
296 #define VP8_LUMA_MC_FUNC(IDX, SIZE, OPT) \
297     c->put_vp8_epel_pixels_tab[IDX][0][2] = ff_put_vp8_epel ## SIZE ## _h6_ ## OPT; \
298     c->put_vp8_epel_pixels_tab[IDX][2][0] = ff_put_vp8_epel ## SIZE ## _v6_ ## OPT; \
299     c->put_vp8_epel_pixels_tab[IDX][2][2] = ff_put_vp8_epel ## SIZE ## _h6v6_ ## OPT
300 
301 #define VP8_MC_FUNC(IDX, SIZE, OPT) \
302     c->put_vp8_epel_pixels_tab[IDX][0][1] = ff_put_vp8_epel ## SIZE ## _h4_ ## OPT; \
303     c->put_vp8_epel_pixels_tab[IDX][1][0] = ff_put_vp8_epel ## SIZE ## _v4_ ## OPT; \
304     c->put_vp8_epel_pixels_tab[IDX][1][1] = ff_put_vp8_epel ## SIZE ## _h4v4_ ## OPT; \
305     c->put_vp8_epel_pixels_tab[IDX][1][2] = ff_put_vp8_epel ## SIZE ## _h6v4_ ## OPT; \
306     c->put_vp8_epel_pixels_tab[IDX][2][1] = ff_put_vp8_epel ## SIZE ## _h4v6_ ## OPT; \
307     VP8_LUMA_MC_FUNC(IDX, SIZE, OPT)
308 
309 #define VP8_BILINEAR_MC_FUNC(IDX, SIZE, OPT) \
310     c->put_vp8_bilinear_pixels_tab[IDX][0][1] = ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT; \
311     c->put_vp8_bilinear_pixels_tab[IDX][0][2] = ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT; \
312     c->put_vp8_bilinear_pixels_tab[IDX][1][0] = ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT; \
313     c->put_vp8_bilinear_pixels_tab[IDX][1][1] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
314     c->put_vp8_bilinear_pixels_tab[IDX][1][2] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
315     c->put_vp8_bilinear_pixels_tab[IDX][2][0] = ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT; \
316     c->put_vp8_bilinear_pixels_tab[IDX][2][1] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
317     c->put_vp8_bilinear_pixels_tab[IDX][2][2] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT
318 
319 
320 av_cold void ff_vp78dsp_init_x86(VP8DSPContext *c)
321 {
322 #if HAVE_X86ASM
323     int cpu_flags = av_get_cpu_flags();
324 
325     if (EXTERNAL_MMX(cpu_flags)) {
326 #if ARCH_X86_32
327         c->put_vp8_epel_pixels_tab[0][0][0]     =
328         c->put_vp8_bilinear_pixels_tab[0][0][0] = ff_put_vp8_pixels16_mmx;
329 #endif
330         c->put_vp8_epel_pixels_tab[1][0][0]     =
331         c->put_vp8_bilinear_pixels_tab[1][0][0] = ff_put_vp8_pixels8_mmx;
332     }
333 
334     /* note that 4-tap width=16 functions are missing because w=16
335      * is only used for luma, and luma is always a copy or sixtap. */
336     if (EXTERNAL_MMXEXT(cpu_flags)) {
337         VP8_MC_FUNC(2, 4, mmxext);
338         VP8_BILINEAR_MC_FUNC(2, 4, mmxext);
339 #if ARCH_X86_32
340         VP8_LUMA_MC_FUNC(0, 16, mmxext);
341         VP8_MC_FUNC(1, 8, mmxext);
342         VP8_BILINEAR_MC_FUNC(0, 16, mmxext);
343         VP8_BILINEAR_MC_FUNC(1,  8, mmxext);
344 #endif
345     }
346 
347     if (EXTERNAL_SSE(cpu_flags)) {
348         c->put_vp8_epel_pixels_tab[0][0][0]     =
349         c->put_vp8_bilinear_pixels_tab[0][0][0] = ff_put_vp8_pixels16_sse;
350     }
351 
352     if (EXTERNAL_SSE2(cpu_flags) || EXTERNAL_SSE2_SLOW(cpu_flags)) {
353         VP8_LUMA_MC_FUNC(0, 16, sse2);
354         VP8_MC_FUNC(1, 8, sse2);
355         VP8_BILINEAR_MC_FUNC(0, 16, sse2);
356         VP8_BILINEAR_MC_FUNC(1, 8, sse2);
357     }
358 
359     if (EXTERNAL_SSSE3(cpu_flags)) {
360         VP8_LUMA_MC_FUNC(0, 16, ssse3);
361         VP8_MC_FUNC(1, 8, ssse3);
362         VP8_MC_FUNC(2, 4, ssse3);
363         VP8_BILINEAR_MC_FUNC(0, 16, ssse3);
364         VP8_BILINEAR_MC_FUNC(1, 8, ssse3);
365         VP8_BILINEAR_MC_FUNC(2, 4, ssse3);
366     }
367 #endif /* HAVE_X86ASM */
368 }
369 
ff_vp8dsp_init_x86(VP8DSPContext * c)370 av_cold void ff_vp8dsp_init_x86(VP8DSPContext *c)
371 {
372 #if HAVE_X86ASM
373     int cpu_flags = av_get_cpu_flags();
374 
375     if (EXTERNAL_MMX(cpu_flags)) {
376         c->vp8_idct_dc_add4uv = ff_vp8_idct_dc_add4uv_mmx;
377 #if ARCH_X86_32
378         c->vp8_idct_dc_add    = ff_vp8_idct_dc_add_mmx;
379         c->vp8_idct_dc_add4y  = ff_vp8_idct_dc_add4y_mmx;
380         c->vp8_idct_add       = ff_vp8_idct_add_mmx;
381         c->vp8_luma_dc_wht    = ff_vp8_luma_dc_wht_mmx;
382 
383         c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_mmx;
384         c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_mmx;
385 
386         c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_mmx;
387         c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_mmx;
388         c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_mmx;
389         c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_mmx;
390 
391         c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_mmx;
392         c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_mmx;
393         c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_mmx;
394         c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_mmx;
395 #endif
396     }
397 
398     /* note that 4-tap width=16 functions are missing because w=16
399      * is only used for luma, and luma is always a copy or sixtap. */
400     if (EXTERNAL_MMXEXT(cpu_flags)) {
401 #if ARCH_X86_32
402         c->vp8_v_loop_filter_simple   = ff_vp8_v_loop_filter_simple_mmxext;
403         c->vp8_h_loop_filter_simple   = ff_vp8_h_loop_filter_simple_mmxext;
404 
405         c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_mmxext;
406         c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_mmxext;
407         c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_mmxext;
408         c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_mmxext;
409 
410         c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_mmxext;
411         c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_mmxext;
412         c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_mmxext;
413         c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_mmxext;
414 #endif
415     }
416 
417     if (EXTERNAL_SSE(cpu_flags)) {
418         c->vp8_idct_add                         = ff_vp8_idct_add_sse;
419         c->vp8_luma_dc_wht                      = ff_vp8_luma_dc_wht_sse;
420     }
421 
422     if (EXTERNAL_SSE2(cpu_flags) || EXTERNAL_SSE2_SLOW(cpu_flags)) {
423         c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_sse2;
424 
425         c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_sse2;
426         c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_sse2;
427 
428         c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_sse2;
429         c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_sse2;
430     }
431 
432     if (EXTERNAL_SSE2(cpu_flags)) {
433         c->vp8_idct_dc_add            = ff_vp8_idct_dc_add_sse2;
434         c->vp8_idct_dc_add4y          = ff_vp8_idct_dc_add4y_sse2;
435 
436         c->vp8_h_loop_filter_simple   = ff_vp8_h_loop_filter_simple_sse2;
437 
438         c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_sse2;
439         c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_sse2;
440 
441         c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_sse2;
442         c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_sse2;
443     }
444 
445     if (EXTERNAL_SSSE3(cpu_flags)) {
446         c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_ssse3;
447         c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_ssse3;
448 
449         c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_ssse3;
450         c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_ssse3;
451         c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_ssse3;
452         c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_ssse3;
453 
454         c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_ssse3;
455         c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_ssse3;
456         c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_ssse3;
457         c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_ssse3;
458     }
459 
460     if (EXTERNAL_SSE4(cpu_flags)) {
461         c->vp8_idct_dc_add            = ff_vp8_idct_dc_add_sse4;
462 
463         c->vp8_h_loop_filter_simple   = ff_vp8_h_loop_filter_simple_sse4;
464         c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_sse4;
465         c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_sse4;
466     }
467 #endif /* HAVE_X86ASM */
468 }
469