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libavcodec/vp8dsp.c

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00001 /*
00002  * Copyright (C) 2010 David Conrad
00003  * Copyright (C) 2010 Ronald S. Bultje
00004  *
00005  * This file is part of Libav.
00006  *
00007  * Libav is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * Libav is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with Libav; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00027 #include "dsputil.h"
00028 #include "vp8dsp.h"
00029 
00030 // TODO: Maybe add dequant
00031 static void vp8_luma_dc_wht_c(DCTELEM block[4][4][16], DCTELEM dc[16])
00032 {
00033     int i, t0, t1, t2, t3;
00034 
00035     for (i = 0; i < 4; i++) {
00036         t0 = dc[0*4+i] + dc[3*4+i];
00037         t1 = dc[1*4+i] + dc[2*4+i];
00038         t2 = dc[1*4+i] - dc[2*4+i];
00039         t3 = dc[0*4+i] - dc[3*4+i];
00040 
00041         dc[0*4+i] = t0 + t1;
00042         dc[1*4+i] = t3 + t2;
00043         dc[2*4+i] = t0 - t1;
00044         dc[3*4+i] = t3 - t2;
00045     }
00046 
00047     for (i = 0; i < 4; i++) {
00048         t0 = dc[i*4+0] + dc[i*4+3] + 3; // rounding
00049         t1 = dc[i*4+1] + dc[i*4+2];
00050         t2 = dc[i*4+1] - dc[i*4+2];
00051         t3 = dc[i*4+0] - dc[i*4+3] + 3; // rounding
00052         dc[i*4+0] = 0;
00053         dc[i*4+1] = 0;
00054         dc[i*4+2] = 0;
00055         dc[i*4+3] = 0;
00056 
00057         block[i][0][0] = (t0 + t1) >> 3;
00058         block[i][1][0] = (t3 + t2) >> 3;
00059         block[i][2][0] = (t0 - t1) >> 3;
00060         block[i][3][0] = (t3 - t2) >> 3;
00061     }
00062 }
00063 
00064 static void vp8_luma_dc_wht_dc_c(DCTELEM block[4][4][16], DCTELEM dc[16])
00065 {
00066     int i, val = (dc[0] + 3) >> 3;
00067     dc[0] = 0;
00068 
00069     for (i = 0; i < 4; i++) {
00070         block[i][0][0] = val;
00071         block[i][1][0] = val;
00072         block[i][2][0] = val;
00073         block[i][3][0] = val;
00074     }
00075 }
00076 
00077 #define MUL_20091(a) ((((a)*20091) >> 16) + (a))
00078 #define MUL_35468(a)  (((a)*35468) >> 16)
00079 
00080 static void vp8_idct_add_c(uint8_t *dst, DCTELEM block[16], int stride)
00081 {
00082     int i, t0, t1, t2, t3;
00083     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
00084     DCTELEM tmp[16];
00085 
00086     for (i = 0; i < 4; i++) {
00087         t0 = block[0*4+i] + block[2*4+i];
00088         t1 = block[0*4+i] - block[2*4+i];
00089         t2 = MUL_35468(block[1*4+i]) - MUL_20091(block[3*4+i]);
00090         t3 = MUL_20091(block[1*4+i]) + MUL_35468(block[3*4+i]);
00091         block[0*4+i] = 0;
00092         block[1*4+i] = 0;
00093         block[2*4+i] = 0;
00094         block[3*4+i] = 0;
00095 
00096         tmp[i*4+0] = t0 + t3;
00097         tmp[i*4+1] = t1 + t2;
00098         tmp[i*4+2] = t1 - t2;
00099         tmp[i*4+3] = t0 - t3;
00100     }
00101 
00102     for (i = 0; i < 4; i++) {
00103         t0 = tmp[0*4+i] + tmp[2*4+i];
00104         t1 = tmp[0*4+i] - tmp[2*4+i];
00105         t2 = MUL_35468(tmp[1*4+i]) - MUL_20091(tmp[3*4+i]);
00106         t3 = MUL_20091(tmp[1*4+i]) + MUL_35468(tmp[3*4+i]);
00107 
00108         dst[0] = cm[dst[0] + ((t0 + t3 + 4) >> 3)];
00109         dst[1] = cm[dst[1] + ((t1 + t2 + 4) >> 3)];
00110         dst[2] = cm[dst[2] + ((t1 - t2 + 4) >> 3)];
00111         dst[3] = cm[dst[3] + ((t0 - t3 + 4) >> 3)];
00112         dst += stride;
00113     }
00114 }
00115 
00116 static void vp8_idct_dc_add_c(uint8_t *dst, DCTELEM block[16], int stride)
00117 {
00118     int i, dc = (block[0] + 4) >> 3;
00119     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc;
00120     block[0] = 0;
00121 
00122     for (i = 0; i < 4; i++) {
00123         dst[0] = cm[dst[0]];
00124         dst[1] = cm[dst[1]];
00125         dst[2] = cm[dst[2]];
00126         dst[3] = cm[dst[3]];
00127         dst += stride;
00128     }
00129 }
00130 
00131 static void vp8_idct_dc_add4uv_c(uint8_t *dst, DCTELEM block[4][16], int stride)
00132 {
00133     vp8_idct_dc_add_c(dst+stride*0+0, block[0], stride);
00134     vp8_idct_dc_add_c(dst+stride*0+4, block[1], stride);
00135     vp8_idct_dc_add_c(dst+stride*4+0, block[2], stride);
00136     vp8_idct_dc_add_c(dst+stride*4+4, block[3], stride);
00137 }
00138 
00139 static void vp8_idct_dc_add4y_c(uint8_t *dst, DCTELEM block[4][16], int stride)
00140 {
00141     vp8_idct_dc_add_c(dst+ 0, block[0], stride);
00142     vp8_idct_dc_add_c(dst+ 4, block[1], stride);
00143     vp8_idct_dc_add_c(dst+ 8, block[2], stride);
00144     vp8_idct_dc_add_c(dst+12, block[3], stride);
00145 }
00146 
00147 // because I like only having two parameters to pass functions...
00148 #define LOAD_PIXELS\
00149     int av_unused p3 = p[-4*stride];\
00150     int av_unused p2 = p[-3*stride];\
00151     int av_unused p1 = p[-2*stride];\
00152     int av_unused p0 = p[-1*stride];\
00153     int av_unused q0 = p[ 0*stride];\
00154     int av_unused q1 = p[ 1*stride];\
00155     int av_unused q2 = p[ 2*stride];\
00156     int av_unused q3 = p[ 3*stride];
00157 
00158 #define clip_int8(n) (cm[n+0x80]-0x80)
00159 
00160 static av_always_inline void filter_common(uint8_t *p, int stride, int is4tap)
00161 {
00162     LOAD_PIXELS
00163     int a, f1, f2;
00164     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
00165 
00166     a = 3*(q0 - p0);
00167 
00168     if (is4tap)
00169         a += clip_int8(p1 - q1);
00170 
00171     a = clip_int8(a);
00172 
00173     // We deviate from the spec here with c(a+3) >> 3
00174     // since that's what libvpx does.
00175     f1 = FFMIN(a+4, 127) >> 3;
00176     f2 = FFMIN(a+3, 127) >> 3;
00177 
00178     // Despite what the spec says, we do need to clamp here to
00179     // be bitexact with libvpx.
00180     p[-1*stride] = cm[p0 + f2];
00181     p[ 0*stride] = cm[q0 - f1];
00182 
00183     // only used for _inner on blocks without high edge variance
00184     if (!is4tap) {
00185         a = (f1+1)>>1;
00186         p[-2*stride] = cm[p1 + a];
00187         p[ 1*stride] = cm[q1 - a];
00188     }
00189 }
00190 
00191 static av_always_inline int simple_limit(uint8_t *p, int stride, int flim)
00192 {
00193     LOAD_PIXELS
00194     return 2*FFABS(p0-q0) + (FFABS(p1-q1) >> 1) <= flim;
00195 }
00196 
00201 static av_always_inline int normal_limit(uint8_t *p, int stride, int E, int I)
00202 {
00203     LOAD_PIXELS
00204     return simple_limit(p, stride, E)
00205         && FFABS(p3-p2) <= I && FFABS(p2-p1) <= I && FFABS(p1-p0) <= I
00206         && FFABS(q3-q2) <= I && FFABS(q2-q1) <= I && FFABS(q1-q0) <= I;
00207 }
00208 
00209 // high edge variance
00210 static av_always_inline int hev(uint8_t *p, int stride, int thresh)
00211 {
00212     LOAD_PIXELS
00213     return FFABS(p1-p0) > thresh || FFABS(q1-q0) > thresh;
00214 }
00215 
00216 static av_always_inline void filter_mbedge(uint8_t *p, int stride)
00217 {
00218     int a0, a1, a2, w;
00219     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
00220 
00221     LOAD_PIXELS
00222 
00223     w = clip_int8(p1-q1);
00224     w = clip_int8(w + 3*(q0-p0));
00225 
00226     a0 = (27*w + 63) >> 7;
00227     a1 = (18*w + 63) >> 7;
00228     a2 = ( 9*w + 63) >> 7;
00229 
00230     p[-3*stride] = cm[p2 + a2];
00231     p[-2*stride] = cm[p1 + a1];
00232     p[-1*stride] = cm[p0 + a0];
00233     p[ 0*stride] = cm[q0 - a0];
00234     p[ 1*stride] = cm[q1 - a1];
00235     p[ 2*stride] = cm[q2 - a2];
00236 }
00237 
00238 #define LOOP_FILTER(dir, size, stridea, strideb, maybe_inline) \
00239 static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _c(uint8_t *dst, int stride,\
00240                                      int flim_E, int flim_I, int hev_thresh)\
00241 {\
00242     int i;\
00243 \
00244     for (i = 0; i < size; i++)\
00245         if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
00246             if (hev(dst+i*stridea, strideb, hev_thresh))\
00247                 filter_common(dst+i*stridea, strideb, 1);\
00248             else\
00249                 filter_mbedge(dst+i*stridea, strideb);\
00250         }\
00251 }\
00252 \
00253 static maybe_inline void vp8_ ## dir ## _loop_filter ## size ## _inner_c(uint8_t *dst, int stride,\
00254                                       int flim_E, int flim_I, int hev_thresh)\
00255 {\
00256     int i;\
00257 \
00258     for (i = 0; i < size; i++)\
00259         if (normal_limit(dst+i*stridea, strideb, flim_E, flim_I)) {\
00260             int hv = hev(dst+i*stridea, strideb, hev_thresh);\
00261             if (hv) \
00262                 filter_common(dst+i*stridea, strideb, 1);\
00263             else \
00264                 filter_common(dst+i*stridea, strideb, 0);\
00265         }\
00266 }
00267 
00268 LOOP_FILTER(v, 16, 1, stride,)
00269 LOOP_FILTER(h, 16, stride, 1,)
00270 
00271 #define UV_LOOP_FILTER(dir, stridea, strideb) \
00272 LOOP_FILTER(dir, 8, stridea, strideb, av_always_inline) \
00273 static void vp8_ ## dir ## _loop_filter8uv_c(uint8_t *dstU, uint8_t *dstV, int stride,\
00274                                       int fE, int fI, int hev_thresh)\
00275 {\
00276   vp8_ ## dir ## _loop_filter8_c(dstU, stride, fE, fI, hev_thresh);\
00277   vp8_ ## dir ## _loop_filter8_c(dstV, stride, fE, fI, hev_thresh);\
00278 }\
00279 static void vp8_ ## dir ## _loop_filter8uv_inner_c(uint8_t *dstU, uint8_t *dstV, int stride,\
00280                                       int fE, int fI, int hev_thresh)\
00281 {\
00282   vp8_ ## dir ## _loop_filter8_inner_c(dstU, stride, fE, fI, hev_thresh);\
00283   vp8_ ## dir ## _loop_filter8_inner_c(dstV, stride, fE, fI, hev_thresh);\
00284 }
00285 
00286 UV_LOOP_FILTER(v, 1, stride)
00287 UV_LOOP_FILTER(h, stride, 1)
00288 
00289 static void vp8_v_loop_filter_simple_c(uint8_t *dst, int stride, int flim)
00290 {
00291     int i;
00292 
00293     for (i = 0; i < 16; i++)
00294         if (simple_limit(dst+i, stride, flim))
00295             filter_common(dst+i, stride, 1);
00296 }
00297 
00298 static void vp8_h_loop_filter_simple_c(uint8_t *dst, int stride, int flim)
00299 {
00300     int i;
00301 
00302     for (i = 0; i < 16; i++)
00303         if (simple_limit(dst+i*stride, 1, flim))
00304             filter_common(dst+i*stride, 1, 1);
00305 }
00306 
00307 static const uint8_t subpel_filters[7][6] = {
00308     { 0,   6, 123,  12,   1,   0 },
00309     { 2,  11, 108,  36,   8,   1 },
00310     { 0,   9,  93,  50,   6,   0 },
00311     { 3,  16,  77,  77,  16,   3 },
00312     { 0,   6,  50,  93,   9,   0 },
00313     { 1,   8,  36, 108,  11,   2 },
00314     { 0,   1,  12, 123,   6,   0 },
00315 };
00316 
00317 #define PUT_PIXELS(WIDTH) \
00318 static void put_vp8_pixels ## WIDTH ##_c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int x, int y) { \
00319     int i; \
00320     for (i = 0; i < h; i++, dst+= dststride, src+= srcstride) { \
00321         memcpy(dst, src, WIDTH); \
00322     } \
00323 }
00324 
00325 PUT_PIXELS(16)
00326 PUT_PIXELS(8)
00327 PUT_PIXELS(4)
00328 
00329 #define FILTER_6TAP(src, F, stride) \
00330     cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + F[0]*src[x-2*stride] + \
00331         F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + F[5]*src[x+3*stride] + 64) >> 7]
00332 
00333 #define FILTER_4TAP(src, F, stride) \
00334     cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + \
00335         F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + 64) >> 7]
00336 
00337 #define VP8_EPEL_H(SIZE, TAPS) \
00338 static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
00339 { \
00340     const uint8_t *filter = subpel_filters[mx-1]; \
00341     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
00342     int x, y; \
00343 \
00344     for (y = 0; y < h; y++) { \
00345         for (x = 0; x < SIZE; x++) \
00346             dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1); \
00347         dst += dststride; \
00348         src += srcstride; \
00349     } \
00350 }
00351 #define VP8_EPEL_V(SIZE, TAPS) \
00352 static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
00353 { \
00354     const uint8_t *filter = subpel_filters[my-1]; \
00355     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
00356     int x, y; \
00357 \
00358     for (y = 0; y < h; y++) { \
00359         for (x = 0; x < SIZE; x++) \
00360             dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride); \
00361         dst += dststride; \
00362         src += srcstride; \
00363     } \
00364 }
00365 #define VP8_EPEL_HV(SIZE, HTAPS, VTAPS) \
00366 static void put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
00367 { \
00368     const uint8_t *filter = subpel_filters[mx-1]; \
00369     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
00370     int x, y; \
00371     uint8_t tmp_array[(2*SIZE+VTAPS-1)*SIZE]; \
00372     uint8_t *tmp = tmp_array; \
00373     src -= (2-(VTAPS==4))*srcstride; \
00374 \
00375     for (y = 0; y < h+VTAPS-1; y++) { \
00376         for (x = 0; x < SIZE; x++) \
00377             tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1); \
00378         tmp += SIZE; \
00379         src += srcstride; \
00380     } \
00381 \
00382     tmp = tmp_array + (2-(VTAPS==4))*SIZE; \
00383     filter = subpel_filters[my-1]; \
00384 \
00385     for (y = 0; y < h; y++) { \
00386         for (x = 0; x < SIZE; x++) \
00387             dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE); \
00388         dst += dststride; \
00389         tmp += SIZE; \
00390     } \
00391 }
00392 
00393 VP8_EPEL_H(16, 4)
00394 VP8_EPEL_H(8,  4)
00395 VP8_EPEL_H(4,  4)
00396 VP8_EPEL_H(16, 6)
00397 VP8_EPEL_H(8,  6)
00398 VP8_EPEL_H(4,  6)
00399 VP8_EPEL_V(16, 4)
00400 VP8_EPEL_V(8,  4)
00401 VP8_EPEL_V(4,  4)
00402 VP8_EPEL_V(16, 6)
00403 VP8_EPEL_V(8,  6)
00404 VP8_EPEL_V(4,  6)
00405 VP8_EPEL_HV(16, 4, 4)
00406 VP8_EPEL_HV(8,  4, 4)
00407 VP8_EPEL_HV(4,  4, 4)
00408 VP8_EPEL_HV(16, 4, 6)
00409 VP8_EPEL_HV(8,  4, 6)
00410 VP8_EPEL_HV(4,  4, 6)
00411 VP8_EPEL_HV(16, 6, 4)
00412 VP8_EPEL_HV(8,  6, 4)
00413 VP8_EPEL_HV(4,  6, 4)
00414 VP8_EPEL_HV(16, 6, 6)
00415 VP8_EPEL_HV(8,  6, 6)
00416 VP8_EPEL_HV(4,  6, 6)
00417 
00418 #define VP8_BILINEAR(SIZE) \
00419 static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
00420 { \
00421     int a = 8-mx, b = mx; \
00422     int x, y; \
00423 \
00424     for (y = 0; y < h; y++) { \
00425         for (x = 0; x < SIZE; x++) \
00426             dst[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
00427         dst += stride; \
00428         src += stride; \
00429     } \
00430 } \
00431 static void put_vp8_bilinear ## SIZE ## _v_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
00432 { \
00433     int c = 8-my, d = my; \
00434     int x, y; \
00435 \
00436     for (y = 0; y < h; y++) { \
00437         for (x = 0; x < SIZE; x++) \
00438             dst[x] = (c*src[x] + d*src[x+stride] + 4) >> 3; \
00439         dst += stride; \
00440         src += stride; \
00441     } \
00442 } \
00443 \
00444 static void put_vp8_bilinear ## SIZE ## _hv_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
00445 { \
00446     int a = 8-mx, b = mx; \
00447     int c = 8-my, d = my; \
00448     int x, y; \
00449     uint8_t tmp_array[(2*SIZE+1)*SIZE]; \
00450     uint8_t *tmp = tmp_array; \
00451 \
00452     for (y = 0; y < h+1; y++) { \
00453         for (x = 0; x < SIZE; x++) \
00454             tmp[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
00455         tmp += SIZE; \
00456         src += stride; \
00457     } \
00458 \
00459     tmp = tmp_array; \
00460 \
00461     for (y = 0; y < h; y++) { \
00462         for (x = 0; x < SIZE; x++) \
00463             dst[x] = (c*tmp[x] + d*tmp[x+SIZE] + 4) >> 3; \
00464         dst += stride; \
00465         tmp += SIZE; \
00466     } \
00467 }
00468 
00469 VP8_BILINEAR(16)
00470 VP8_BILINEAR(8)
00471 VP8_BILINEAR(4)
00472 
00473 #define VP8_MC_FUNC(IDX, SIZE) \
00474     dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
00475     dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c; \
00476     dsp->put_vp8_epel_pixels_tab[IDX][0][2] = put_vp8_epel ## SIZE ## _h6_c; \
00477     dsp->put_vp8_epel_pixels_tab[IDX][1][0] = put_vp8_epel ## SIZE ## _v4_c; \
00478     dsp->put_vp8_epel_pixels_tab[IDX][1][1] = put_vp8_epel ## SIZE ## _h4v4_c; \
00479     dsp->put_vp8_epel_pixels_tab[IDX][1][2] = put_vp8_epel ## SIZE ## _h6v4_c; \
00480     dsp->put_vp8_epel_pixels_tab[IDX][2][0] = put_vp8_epel ## SIZE ## _v6_c; \
00481     dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \
00482     dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c
00483 
00484 #define VP8_BILINEAR_MC_FUNC(IDX, SIZE) \
00485     dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
00486     dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \
00487     dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \
00488     dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \
00489     dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
00490     dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \
00491     dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \
00492     dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
00493     dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c
00494 
00495 av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
00496 {
00497     dsp->vp8_luma_dc_wht    = vp8_luma_dc_wht_c;
00498     dsp->vp8_luma_dc_wht_dc = vp8_luma_dc_wht_dc_c;
00499     dsp->vp8_idct_add       = vp8_idct_add_c;
00500     dsp->vp8_idct_dc_add    = vp8_idct_dc_add_c;
00501     dsp->vp8_idct_dc_add4y  = vp8_idct_dc_add4y_c;
00502     dsp->vp8_idct_dc_add4uv = vp8_idct_dc_add4uv_c;
00503 
00504     dsp->vp8_v_loop_filter16y = vp8_v_loop_filter16_c;
00505     dsp->vp8_h_loop_filter16y = vp8_h_loop_filter16_c;
00506     dsp->vp8_v_loop_filter8uv = vp8_v_loop_filter8uv_c;
00507     dsp->vp8_h_loop_filter8uv = vp8_h_loop_filter8uv_c;
00508 
00509     dsp->vp8_v_loop_filter16y_inner = vp8_v_loop_filter16_inner_c;
00510     dsp->vp8_h_loop_filter16y_inner = vp8_h_loop_filter16_inner_c;
00511     dsp->vp8_v_loop_filter8uv_inner = vp8_v_loop_filter8uv_inner_c;
00512     dsp->vp8_h_loop_filter8uv_inner = vp8_h_loop_filter8uv_inner_c;
00513 
00514     dsp->vp8_v_loop_filter_simple = vp8_v_loop_filter_simple_c;
00515     dsp->vp8_h_loop_filter_simple = vp8_h_loop_filter_simple_c;
00516 
00517     VP8_MC_FUNC(0, 16);
00518     VP8_MC_FUNC(1, 8);
00519     VP8_MC_FUNC(2, 4);
00520 
00521     VP8_BILINEAR_MC_FUNC(0, 16);
00522     VP8_BILINEAR_MC_FUNC(1, 8);
00523     VP8_BILINEAR_MC_FUNC(2, 4);
00524 
00525     if (HAVE_MMX)
00526         ff_vp8dsp_init_x86(dsp);
00527     if (HAVE_ALTIVEC)
00528         ff_vp8dsp_init_altivec(dsp);
00529     if (ARCH_ARM)
00530         ff_vp8dsp_init_arm(dsp);
00531 }
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