libmpcodecs/vf_yadif.c

   1 /*
   2  * Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <inttypes.h>
  25 #include <math.h>
  26
  27 #include "config.h"
  28 #include "cpudetect.h"
  29 #include "options.h"
  30
  31 #include "mp_msg.h"
  32 #include "img_format.h"
  33 #include "mp_image.h"
  34 #include "vf.h"
  35 #include "libvo/fastmemcpy.h"
  36 #include "libavutil/common.h"
  37
  38 //===========================================================================//
  39
  40 struct vf_priv_s {
  41     int mode;
  42     int parity;
  43     int buffered_i;
  44     int buffered_tff;
  45     double buffered_pts;
  46     mp_image_t *buffered_mpi;
  47     int stride[3];
  48     uint8_t *ref[4][3];
  49     int do_deinterlace;
  50 };
  51
  52 static void (*filter_line)(struct vf_priv_s *p, uint8_t *dst, uint8_t *prev, uint8_t *cur, uint8_t *next, int w, int refs, int parity);
  53
  54 static void store_ref(struct vf_priv_s *p, uint8_t *src[3], int src_stride[3], int width, int height){
  55     int i;
  56
  57     memcpy (p->ref[3], p->ref[0], sizeof(uint8_t *)*3);
  58     memmove(p->ref[0], p->ref[1], sizeof(uint8_t *)*3*3);
  59
  60     for(i=0; i<3; i++){
  61         int is_chroma= !!i;
  62
  63         memcpy_pic(p->ref[2][i], src[i], width>>is_chroma, height>>is_chroma, p->stride[i], src_stride[i]);
  64     }
  65 }
  66
  67 #if HAVE_MMX && defined(NAMED_ASM_ARGS)
  68
  69 #define LOAD4(mem,dst) \
  70             "movd      "mem", "#dst" \n\t"\
  71             "punpcklbw %%mm7, "#dst" \n\t"
  72
  73 #define PABS(tmp,dst) \
  74             "pxor     "#tmp", "#tmp" \n\t"\
  75             "psubw    "#dst", "#tmp" \n\t"\
  76             "pmaxsw   "#tmp", "#dst" \n\t"
  77
  78 #define CHECK(pj,mj) \
  79             "movq "#pj"(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1+j] */\
  80             "movq "#mj"(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1-j] */\
  81             "movq      %%mm2, %%mm4 \n\t"\
  82             "movq      %%mm2, %%mm5 \n\t"\
  83             "pxor      %%mm3, %%mm4 \n\t"\
  84             "pavgb     %%mm3, %%mm5 \n\t"\
  85             "pand     %[pb1], %%mm4 \n\t"\
  86             "psubusb   %%mm4, %%mm5 \n\t"\
  87             "psrlq     $8,    %%mm5 \n\t"\
  88             "punpcklbw %%mm7, %%mm5 \n\t" /* (cur[x-refs+j] + cur[x+refs-j])>>1 */\
  89             "movq      %%mm2, %%mm4 \n\t"\
  90             "psubusb   %%mm3, %%mm2 \n\t"\
  91             "psubusb   %%mm4, %%mm3 \n\t"\
  92             "pmaxub    %%mm3, %%mm2 \n\t"\
  93             "movq      %%mm2, %%mm3 \n\t"\
  94             "movq      %%mm2, %%mm4 \n\t" /* ABS(cur[x-refs-1+j] - cur[x+refs-1-j]) */\
  95             "psrlq      $8,   %%mm3 \n\t" /* ABS(cur[x-refs  +j] - cur[x+refs  -j]) */\
  96             "psrlq     $16,   %%mm4 \n\t" /* ABS(cur[x-refs+1+j] - cur[x+refs+1-j]) */\
  97             "punpcklbw %%mm7, %%mm2 \n\t"\
  98             "punpcklbw %%mm7, %%mm3 \n\t"\
  99             "punpcklbw %%mm7, %%mm4 \n\t"\
 100             "paddw     %%mm3, %%mm2 \n\t"\
 101             "paddw     %%mm4, %%mm2 \n\t" /* score */
 102
 103 #define CHECK1 \
 104             "movq      %%mm0, %%mm3 \n\t"\
 105             "pcmpgtw   %%mm2, %%mm3 \n\t" /* if(score < spatial_score) */\
 106             "pminsw    %%mm2, %%mm0 \n\t" /* spatial_score= score; */\
 107             "movq      %%mm3, %%mm6 \n\t"\
 108             "pand      %%mm3, %%mm5 \n\t"\
 109             "pandn     %%mm1, %%mm3 \n\t"\
 110             "por       %%mm5, %%mm3 \n\t"\
 111             "movq      %%mm3, %%mm1 \n\t" /* spatial_pred= (cur[x-refs+j] + cur[x+refs-j])>>1; */
 112
 113 #define CHECK2 /* pretend not to have checked dir=2 if dir=1 was bad.\
 114                   hurts both quality and speed, but matches the C version. */\
 115             "paddw    %[pw1], %%mm6 \n\t"\
 116             "psllw     $14,   %%mm6 \n\t"\
 117             "paddsw    %%mm6, %%mm2 \n\t"\
 118             "movq      %%mm0, %%mm3 \n\t"\
 119             "pcmpgtw   %%mm2, %%mm3 \n\t"\
 120             "pminsw    %%mm2, %%mm0 \n\t"\
 121             "pand      %%mm3, %%mm5 \n\t"\
 122             "pandn     %%mm1, %%mm3 \n\t"\
 123             "por       %%mm5, %%mm3 \n\t"\
 124             "movq      %%mm3, %%mm1 \n\t"
 125
 126 static void filter_line_mmx2(struct vf_priv_s *p, uint8_t *dst, uint8_t *prev, uint8_t *cur, uint8_t *next, int w, int refs, int parity){
 127     static const uint64_t pw_1 = 0x0001000100010001ULL;
 128     static const uint64_t pb_1 = 0x0101010101010101ULL;
 129     const int mode = p->mode;
 130     uint64_t tmp0, tmp1, tmp2, tmp3;
 131     int x;
 132
 133 #define FILTER\
 134     for(x=0; x<w; x+=4){\
 135         __asm__ volatile(\
 136             "pxor      %%mm7, %%mm7 \n\t"\
 137             LOAD4("(%[cur],%[mrefs])", %%mm0) /* c = cur[x-refs] */\
 138             LOAD4("(%[cur],%[prefs])", %%mm1) /* e = cur[x+refs] */\
 139             LOAD4("(%["prev2"])", %%mm2) /* prev2[x] */\
 140             LOAD4("(%["next2"])", %%mm3) /* next2[x] */\
 141             "movq      %%mm3, %%mm4 \n\t"\
 142             "paddw     %%mm2, %%mm3 \n\t"\
 143             "psraw     $1,    %%mm3 \n\t" /* d = (prev2[x] + next2[x])>>1 */\
 144             "movq      %%mm0, %[tmp0] \n\t" /* c */\
 145             "movq      %%mm3, %[tmp1] \n\t" /* d */\
 146             "movq      %%mm1, %[tmp2] \n\t" /* e */\
 147             "psubw     %%mm4, %%mm2 \n\t"\
 148             PABS(      %%mm4, %%mm2) /* temporal_diff0 */\
 149             LOAD4("(%[prev],%[mrefs])", %%mm3) /* prev[x-refs] */\
 150             LOAD4("(%[prev],%[prefs])", %%mm4) /* prev[x+refs] */\
 151             "psubw     %%mm0, %%mm3 \n\t"\
 152             "psubw     %%mm1, %%mm4 \n\t"\
 153             PABS(      %%mm5, %%mm3)\
 154             PABS(      %%mm5, %%mm4)\
 155             "paddw     %%mm4, %%mm3 \n\t" /* temporal_diff1 */\
 156             "psrlw     $1,    %%mm2 \n\t"\
 157             "psrlw     $1,    %%mm3 \n\t"\
 158             "pmaxsw    %%mm3, %%mm2 \n\t"\
 159             LOAD4("(%[next],%[mrefs])", %%mm3) /* next[x-refs] */\
 160             LOAD4("(%[next],%[prefs])", %%mm4) /* next[x+refs] */\
 161             "psubw     %%mm0, %%mm3 \n\t"\
 162             "psubw     %%mm1, %%mm4 \n\t"\
 163             PABS(      %%mm5, %%mm3)\
 164             PABS(      %%mm5, %%mm4)\
 165             "paddw     %%mm4, %%mm3 \n\t" /* temporal_diff2 */\
 166             "psrlw     $1,    %%mm3 \n\t"\
 167             "pmaxsw    %%mm3, %%mm2 \n\t"\
 168             "movq      %%mm2, %[tmp3] \n\t" /* diff */\
 169 \
 170             "paddw     %%mm0, %%mm1 \n\t"\
 171             "paddw     %%mm0, %%mm0 \n\t"\
 172             "psubw     %%mm1, %%mm0 \n\t"\
 173             "psrlw     $1,    %%mm1 \n\t" /* spatial_pred */\
 174             PABS(      %%mm2, %%mm0)      /* ABS(c-e) */\
 175 \
 176             "movq -1(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1] */\
 177             "movq -1(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1] */\
 178             "movq      %%mm2, %%mm4 \n\t"\
 179             "psubusb   %%mm3, %%mm2 \n\t"\
 180             "psubusb   %%mm4, %%mm3 \n\t"\
 181             "pmaxub    %%mm3, %%mm2 \n\t"\
 182             "pshufw $9,%%mm2, %%mm3 \n\t"\
 183             "punpcklbw %%mm7, %%mm2 \n\t" /* ABS(cur[x-refs-1] - cur[x+refs-1]) */\
 184             "punpcklbw %%mm7, %%mm3 \n\t" /* ABS(cur[x-refs+1] - cur[x+refs+1]) */\
 185             "paddw     %%mm2, %%mm0 \n\t"\
 186             "paddw     %%mm3, %%mm0 \n\t"\
 187             "psubw    %[pw1], %%mm0 \n\t" /* spatial_score */\
 188 \
 189             CHECK(-2,0)\
 190             CHECK1\
 191             CHECK(-3,1)\
 192             CHECK2\
 193             CHECK(0,-2)\
 194             CHECK1\
 195             CHECK(1,-3)\
 196             CHECK2\
 197 \
 198             /* if(p->mode<2) ... */\
 199             "movq    %[tmp3], %%mm6 \n\t" /* diff */\
 200             "cmpl      $2, %[mode] \n\t"\
 201             "jge       1f \n\t"\
 202             LOAD4("(%["prev2"],%[mrefs],2)", %%mm2) /* prev2[x-2*refs] */\
 203             LOAD4("(%["next2"],%[mrefs],2)", %%mm4) /* next2[x-2*refs] */\
 204             LOAD4("(%["prev2"],%[prefs],2)", %%mm3) /* prev2[x+2*refs] */\
 205             LOAD4("(%["next2"],%[prefs],2)", %%mm5) /* next2[x+2*refs] */\
 206             "paddw     %%mm4, %%mm2 \n\t"\
 207             "paddw     %%mm5, %%mm3 \n\t"\
 208             "psrlw     $1,    %%mm2 \n\t" /* b */\
 209             "psrlw     $1,    %%mm3 \n\t" /* f */\
 210             "movq    %[tmp0], %%mm4 \n\t" /* c */\
 211             "movq    %[tmp1], %%mm5 \n\t" /* d */\
 212             "movq    %[tmp2], %%mm7 \n\t" /* e */\
 213             "psubw     %%mm4, %%mm2 \n\t" /* b-c */\
 214             "psubw     %%mm7, %%mm3 \n\t" /* f-e */\
 215             "movq      %%mm5, %%mm0 \n\t"\
 216             "psubw     %%mm4, %%mm5 \n\t" /* d-c */\
 217             "psubw     %%mm7, %%mm0 \n\t" /* d-e */\
 218             "movq      %%mm2, %%mm4 \n\t"\
 219             "pminsw    %%mm3, %%mm2 \n\t"\
 220             "pmaxsw    %%mm4, %%mm3 \n\t"\
 221             "pmaxsw    %%mm5, %%mm2 \n\t"\
 222             "pminsw    %%mm5, %%mm3 \n\t"\
 223             "pmaxsw    %%mm0, %%mm2 \n\t" /* max */\
 224             "pminsw    %%mm0, %%mm3 \n\t" /* min */\
 225             "pxor      %%mm4, %%mm4 \n\t"\
 226             "pmaxsw    %%mm3, %%mm6 \n\t"\
 227             "psubw     %%mm2, %%mm4 \n\t" /* -max */\
 228             "pmaxsw    %%mm4, %%mm6 \n\t" /* diff= MAX3(diff, min, -max); */\
 229             "1: \n\t"\
 230 \
 231             "movq    %[tmp1], %%mm2 \n\t" /* d */\
 232             "movq      %%mm2, %%mm3 \n\t"\
 233             "psubw     %%mm6, %%mm2 \n\t" /* d-diff */\
 234             "paddw     %%mm6, %%mm3 \n\t" /* d+diff */\
 235             "pmaxsw    %%mm2, %%mm1 \n\t"\
 236             "pminsw    %%mm3, %%mm1 \n\t" /* d = clip(spatial_pred, d-diff, d+diff); */\
 237             "packuswb  %%mm1, %%mm1 \n\t"\
 238 \
 239             :[tmp0]"=m"(tmp0),\
 240              [tmp1]"=m"(tmp1),\
 241              [tmp2]"=m"(tmp2),\
 242              [tmp3]"=m"(tmp3)\
 243             :[prev] "r"(prev),\
 244              [cur]  "r"(cur),\
 245              [next] "r"(next),\
 246              [prefs]"r"((x86_reg)refs),\
 247              [mrefs]"r"((x86_reg)-refs),\
 248              [pw1]  "m"(pw_1),\
 249              [pb1]  "m"(pb_1),\
 250              [mode] "g"(mode)\
 251         );\
 252         __asm__ volatile("movd %%mm1, %0" :"=m"(*dst));\
 253         dst += 4;\
 254         prev+= 4;\
 255         cur += 4;\
 256         next+= 4;\
 257     }
 258
 259     if(parity){
 260 #define prev2 "prev"
 261 #define next2 "cur"
 262         FILTER
 263 #undef prev2
 264 #undef next2
 265     }else{
 266 #define prev2 "cur"
 267 #define next2 "next"
 268         FILTER
 269 #undef prev2
 270 #undef next2
 271     }
 272 }
 273 #undef LOAD4
 274 #undef PABS
 275 #undef CHECK
 276 #undef CHECK1
 277 #undef CHECK2
 278 #undef FILTER
 279
 280 #endif /* HAVE_MMX && defined(NAMED_ASM_ARGS) */
 281
 282 static void filter_line_c(struct vf_priv_s *p, uint8_t *dst, uint8_t *prev, uint8_t *cur, uint8_t *next, int w, int refs, int parity){
 283     int x;
 284     uint8_t *prev2= parity ? prev : cur ;
 285     uint8_t *next2= parity ? cur  : next;
 286     for(x=0; x<w; x++){
 287         int c= cur[-refs];
 288         int d= (prev2[0] + next2[0])>>1;
 289         int e= cur[+refs];
 290         int temporal_diff0= FFABS(prev2[0] - next2[0]);
 291         int temporal_diff1=( FFABS(prev[-refs] - c) + FFABS(prev[+refs] - e) )>>1;
 292         int temporal_diff2=( FFABS(next[-refs] - c) + FFABS(next[+refs] - e) )>>1;
 293         int diff= FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2);
 294         int spatial_pred= (c+e)>>1;
 295         int spatial_score= FFABS(cur[-refs-1] - cur[+refs-1]) + FFABS(c-e)
 296                          + FFABS(cur[-refs+1] - cur[+refs+1]) - 1;
 297
 298 #define CHECK(j)\
 299     {   int score= FFABS(cur[-refs-1+j] - cur[+refs-1-j])\
 300                  + FFABS(cur[-refs  +j] - cur[+refs  -j])\
 301                  + FFABS(cur[-refs+1+j] - cur[+refs+1-j]);\
 302         if(score < spatial_score){\
 303             spatial_score= score;\
 304             spatial_pred= (cur[-refs  +j] + cur[+refs  -j])>>1;\
 305
 306         CHECK(-1) CHECK(-2) }} }}
 307         CHECK( 1) CHECK( 2) }} }}
 308
 309         if(p->mode<2){
 310             int b= (prev2[-2*refs] + next2[-2*refs])>>1;
 311             int f= (prev2[+2*refs] + next2[+2*refs])>>1;
 312 #if 0
 313             int a= cur[-3*refs];
 314             int g= cur[+3*refs];
 315             int max= FFMAX3(d-e, d-c, FFMIN3(FFMAX(b-c,f-e),FFMAX(b-c,b-a),FFMAX(f-g,f-e)) );
 316             int min= FFMIN3(d-e, d-c, FFMAX3(FFMIN(b-c,f-e),FFMIN(b-c,b-a),FFMIN(f-g,f-e)) );
 317 #else
 318             int max= FFMAX3(d-e, d-c, FFMIN(b-c, f-e));
 319             int min= FFMIN3(d-e, d-c, FFMAX(b-c, f-e));
 320 #endif
 321
 322             diff= FFMAX3(diff, min, -max);
 323         }
 324
 325         if(spatial_pred > d + diff)
 326            spatial_pred = d + diff;
 327         else if(spatial_pred < d - diff)
 328            spatial_pred = d - diff;
 329
 330         dst[0] = spatial_pred;
 331
 332         dst++;
 333         cur++;
 334         prev++;
 335         next++;
 336         prev2++;
 337         next2++;
 338     }
 339 }
 340
 341 static void filter(struct vf_priv_s *p, uint8_t *dst[3], int dst_stride[3], int width, int height, int parity, int tff){
 342     int y, i;
 343
 344     for(i=0; i<3; i++){
 345         int is_chroma= !!i;
 346         int w= width >>is_chroma;
 347         int h= height>>is_chroma;
 348         int refs= p->stride[i];
 349
 350         for(y=0; y<h; y++){
 351             if((y ^ parity) & 1){
 352                 uint8_t *prev= &p->ref[0][i][y*refs];
 353                 uint8_t *cur = &p->ref[1][i][y*refs];
 354                 uint8_t *next= &p->ref[2][i][y*refs];
 355                 uint8_t *dst2= &dst[i][y*dst_stride[i]];
 356                 filter_line(p, dst2, prev, cur, next, w, refs, parity ^ tff);
 357             }else{
 358                 fast_memcpy(&dst[i][y*dst_stride[i]], &p->ref[1][i][y*refs], w);
 359             }
 360         }
 361     }
 362 #if HAVE_MMX && defined(NAMED_ASM_ARGS)
 363     if(gCpuCaps.hasMMX2) __asm__ volatile("emms \n\t" : : : "memory");
 364 #endif
 365 }
 366
 367 static int config(struct vf_instance *vf,
 368         int width, int height, int d_width, int d_height,
 369         unsigned int flags, unsigned int outfmt){
 370         int i, j;
 371
 372         for(i=0; i<3; i++){
 373             int is_chroma= !!i;
 374             int w= ((width   + 31) & (~31))>>is_chroma;
 375             int h= ((height+6+ 31) & (~31))>>is_chroma;
 376
 377             vf->priv->stride[i]= w;
 378             for(j=0; j<3; j++)
 379                 vf->priv->ref[j][i]= malloc(w*h*sizeof(uint8_t))+3*w;
 380         }
 381
 382         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 383 }
 384
 385 static int continue_buffered_image(struct vf_instance *vf);
 386
 387 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
 388     int tff;
 389
 390     if(vf->priv->parity < 0) {
 391         if (mpi->fields & MP_IMGFIELD_ORDERED)
 392             tff = !!(mpi->fields & MP_IMGFIELD_TOP_FIRST);
 393         else
 394             tff = 1;
 395     }
 396     else tff = (vf->priv->parity&1)^1;
 397
 398     store_ref(vf->priv, mpi->planes, mpi->stride, mpi->w, mpi->h);
 399
 400     vf->priv->buffered_mpi = mpi;
 401     vf->priv->buffered_tff = tff;
 402     vf->priv->buffered_i = 0;
 403     vf->priv->buffered_pts = pts;
 404
 405     if(vf->priv->do_deinterlace == 0)
 406         return vf_next_put_image(vf, mpi, pts);
 407     else if(vf->priv->do_deinterlace == 1){
 408         vf->priv->do_deinterlace= 2;
 409         return 0;
 410     }else
 411         return continue_buffered_image(vf);
 412 }
 413
 414 extern const int under_mencoder;
 415
 416 static int continue_buffered_image(struct vf_instance *vf)
 417 {
 418     mp_image_t *mpi = vf->priv->buffered_mpi;
 419     int tff = vf->priv->buffered_tff;
 420     double pts = vf->priv->buffered_pts;
 421     int i;
 422     int ret=0;
 423     mp_image_t *dmpi;
 424
 425     pts += vf->priv->buffered_i * .02; // XXX not right
 426
 427     for(i = vf->priv->buffered_i; i<=(vf->priv->mode&1); i++){
 428         dmpi=vf_get_image(vf->next,mpi->imgfmt,
 429             MP_IMGTYPE_TEMP,
 430             MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 431             mpi->width,mpi->height);
 432         vf_clone_mpi_attributes(dmpi, mpi);
 433         filter(vf->priv, dmpi->planes, dmpi->stride, mpi->w, mpi->h, i ^ tff ^ 1, tff);
 434         if (i < (vf->priv->mode & 1) && !under_mencoder)
 435             vf_queue_frame(vf, continue_buffered_image);
 436         ret |= vf_next_put_image(vf, dmpi, pts /*FIXME*/);
 437         if (!under_mencoder)
 438             break;
 439     }
 440     vf->priv->buffered_i = 1;
 441     return ret;
 442 }
 443
 444 static void uninit(struct vf_instance *vf){
 445     int i;
 446     if(!vf->priv) return;
 447
 448     for(i=0; i<3*3; i++){
 449         uint8_t **p= &vf->priv->ref[i%3][i/3];
 450         if(*p) free(*p - 3*vf->priv->stride[i/3]);
 451         *p= NULL;
 452     }
 453     free(vf->priv);
 454     vf->priv=NULL;
 455 }
 456
 457 //===========================================================================//
 458 static int query_format(struct vf_instance *vf, unsigned int fmt){
 459     switch(fmt){
 460         case IMGFMT_YV12:
 461         case IMGFMT_I420:
 462         case IMGFMT_IYUV:
 463         case IMGFMT_Y800:
 464         case IMGFMT_Y8:
 465             return vf_next_query_format(vf,fmt);
 466     }
 467     return 0;
 468 }
 469
 470 static int control(struct vf_instance *vf, int request, void* data){
 471     switch (request){
 472       case VFCTRL_GET_DEINTERLACE:
 473         *(int*)data = vf->priv->do_deinterlace;
 474         return CONTROL_OK;
 475       case VFCTRL_SET_DEINTERLACE:
 476         vf->priv->do_deinterlace = 2*!!*(int*)data;
 477         return CONTROL_OK;
 478     }
 479     return vf_next_control (vf, request, data);
 480 }
 481
 482 static int vf_open(vf_instance_t *vf, char *args){
 483
 484     vf->config=config;
 485     vf->put_image=put_image;
 486     vf->query_format=query_format;
 487     vf->uninit=uninit;
 488     vf->priv=malloc(sizeof(struct vf_priv_s));
 489     vf->control=control;
 490     memset(vf->priv, 0, sizeof(struct vf_priv_s));
 491
 492     vf->priv->mode=0;
 493     vf->priv->parity= -1;
 494     vf->priv->do_deinterlace=1;
 495
 496     if (args) sscanf(args, "%d:%d", &vf->priv->mode, &vf->priv->parity);
 497
 498     filter_line = filter_line_c;
 499 #if HAVE_MMX && defined(NAMED_ASM_ARGS)
 500     if(gCpuCaps.hasMMX2) filter_line = filter_line_mmx2;
 501 #endif
 502
 503     return 1;
 504 }
 505
 506 const vf_info_t vf_info_yadif = {
 507     "Yet Another DeInterlacing Filter",
 508     "yadif",
 509     "Michael Niedermayer",
 510     "",
 511     vf_open,
 512     NULL
 513 };