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     double buffered_pts_delta;
  47     mp_image_t *buffered_mpi;
  48     int stride[3];
  49     uint8_t *ref[4][3];
  50     int do_deinterlace;
  51 };
  52
  53 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);
  54
  55 static void store_ref(struct vf_priv_s *p, uint8_t *src[3], int src_stride[3], int width, int height){
  56     int i;
  57
  58     memcpy (p->ref[3], p->ref[0], sizeof(uint8_t *)*3);
  59     memmove(p->ref[0], p->ref[1], sizeof(uint8_t *)*3*3);
  60
  61     for(i=0; i<3; i++){
  62         int is_chroma= !!i;
  63
  64         memcpy_pic(p->ref[2][i], src[i], width>>is_chroma, height>>is_chroma, p->stride[i], src_stride[i]);
  65     }
  66 }
  67
  68 #if HAVE_MMX
  69
  70 #define LOAD4(mem,dst) \
  71             "movd      "mem", "#dst" \n\t"\
  72             "punpcklbw %%mm7, "#dst" \n\t"
  73
  74 #define PABS(tmp,dst) \
  75             "pxor     "#tmp", "#tmp" \n\t"\
  76             "psubw    "#dst", "#tmp" \n\t"\
  77             "pmaxsw   "#tmp", "#dst" \n\t"
  78
  79 #define CHECK(pj,mj) \
  80             "movq "#pj"(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1+j] */\
  81             "movq "#mj"(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1-j] */\
  82             "movq      %%mm2, %%mm4 \n\t"\
  83             "movq      %%mm2, %%mm5 \n\t"\
  84             "pxor      %%mm3, %%mm4 \n\t"\
  85             "pavgb     %%mm3, %%mm5 \n\t"\
  86             "pand     %[pb1], %%mm4 \n\t"\
  87             "psubusb   %%mm4, %%mm5 \n\t"\
  88             "psrlq     $8,    %%mm5 \n\t"\
  89             "punpcklbw %%mm7, %%mm5 \n\t" /* (cur[x-refs+j] + cur[x+refs-j])>>1 */\
  90             "movq      %%mm2, %%mm4 \n\t"\
  91             "psubusb   %%mm3, %%mm2 \n\t"\
  92             "psubusb   %%mm4, %%mm3 \n\t"\
  93             "pmaxub    %%mm3, %%mm2 \n\t"\
  94             "movq      %%mm2, %%mm3 \n\t"\
  95             "movq      %%mm2, %%mm4 \n\t" /* ABS(cur[x-refs-1+j] - cur[x+refs-1-j]) */\
  96             "psrlq      $8,   %%mm3 \n\t" /* ABS(cur[x-refs  +j] - cur[x+refs  -j]) */\
  97             "psrlq     $16,   %%mm4 \n\t" /* ABS(cur[x-refs+1+j] - cur[x+refs+1-j]) */\
  98             "punpcklbw %%mm7, %%mm2 \n\t"\
  99             "punpcklbw %%mm7, %%mm3 \n\t"\
 100             "punpcklbw %%mm7, %%mm4 \n\t"\
 101             "paddw     %%mm3, %%mm2 \n\t"\
 102             "paddw     %%mm4, %%mm2 \n\t" /* score */
 103
 104 #define CHECK1 \
 105             "movq      %%mm0, %%mm3 \n\t"\
 106             "pcmpgtw   %%mm2, %%mm3 \n\t" /* if(score < spatial_score) */\
 107             "pminsw    %%mm2, %%mm0 \n\t" /* spatial_score= score; */\
 108             "movq      %%mm3, %%mm6 \n\t"\
 109             "pand      %%mm3, %%mm5 \n\t"\
 110             "pandn     %%mm1, %%mm3 \n\t"\
 111             "por       %%mm5, %%mm3 \n\t"\
 112             "movq      %%mm3, %%mm1 \n\t" /* spatial_pred= (cur[x-refs+j] + cur[x+refs-j])>>1; */
 113
 114 #define CHECK2 /* pretend not to have checked dir=2 if dir=1 was bad.\
 115                   hurts both quality and speed, but matches the C version. */\
 116             "paddw    %[pw1], %%mm6 \n\t"\
 117             "psllw     $14,   %%mm6 \n\t"\
 118             "paddsw    %%mm6, %%mm2 \n\t"\
 119             "movq      %%mm0, %%mm3 \n\t"\
 120             "pcmpgtw   %%mm2, %%mm3 \n\t"\
 121             "pminsw    %%mm2, %%mm0 \n\t"\
 122             "pand      %%mm3, %%mm5 \n\t"\
 123             "pandn     %%mm1, %%mm3 \n\t"\
 124             "por       %%mm5, %%mm3 \n\t"\
 125             "movq      %%mm3, %%mm1 \n\t"
 126
 127 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){
 128     static const uint64_t pw_1 = 0x0001000100010001ULL;
 129     static const uint64_t pb_1 = 0x0101010101010101ULL;
 130     const int mode = p->mode;
 131     uint64_t tmp0, tmp1, tmp2, tmp3;
 132     int x;
 133
 134 #define FILTER\
 135     for(x=0; x<w; x+=4){\
 136         __asm__ volatile(\
 137             "pxor      %%mm7, %%mm7 \n\t"\
 138             LOAD4("(%[cur],%[mrefs])", %%mm0) /* c = cur[x-refs] */\
 139             LOAD4("(%[cur],%[prefs])", %%mm1) /* e = cur[x+refs] */\
 140             LOAD4("(%["prev2"])", %%mm2) /* prev2[x] */\
 141             LOAD4("(%["next2"])", %%mm3) /* next2[x] */\
 142             "movq      %%mm3, %%mm4 \n\t"\
 143             "paddw     %%mm2, %%mm3 \n\t"\
 144             "psraw     $1,    %%mm3 \n\t" /* d = (prev2[x] + next2[x])>>1 */\
 145             "movq      %%mm0, %[tmp0] \n\t" /* c */\
 146             "movq      %%mm3, %[tmp1] \n\t" /* d */\
 147             "movq      %%mm1, %[tmp2] \n\t" /* e */\
 148             "psubw     %%mm4, %%mm2 \n\t"\
 149             PABS(      %%mm4, %%mm2) /* temporal_diff0 */\
 150             LOAD4("(%[prev],%[mrefs])", %%mm3) /* prev[x-refs] */\
 151             LOAD4("(%[prev],%[prefs])", %%mm4) /* prev[x+refs] */\
 152             "psubw     %%mm0, %%mm3 \n\t"\
 153             "psubw     %%mm1, %%mm4 \n\t"\
 154             PABS(      %%mm5, %%mm3)\
 155             PABS(      %%mm5, %%mm4)\
 156             "paddw     %%mm4, %%mm3 \n\t" /* temporal_diff1 */\
 157             "psrlw     $1,    %%mm2 \n\t"\
 158             "psrlw     $1,    %%mm3 \n\t"\
 159             "pmaxsw    %%mm3, %%mm2 \n\t"\
 160             LOAD4("(%[next],%[mrefs])", %%mm3) /* next[x-refs] */\
 161             LOAD4("(%[next],%[prefs])", %%mm4) /* next[x+refs] */\
 162             "psubw     %%mm0, %%mm3 \n\t"\
 163             "psubw     %%mm1, %%mm4 \n\t"\
 164             PABS(      %%mm5, %%mm3)\
 165             PABS(      %%mm5, %%mm4)\
 166             "paddw     %%mm4, %%mm3 \n\t" /* temporal_diff2 */\
 167             "psrlw     $1,    %%mm3 \n\t"\
 168             "pmaxsw    %%mm3, %%mm2 \n\t"\
 169             "movq      %%mm2, %[tmp3] \n\t" /* diff */\
 170 \
 171             "paddw     %%mm0, %%mm1 \n\t"\
 172             "paddw     %%mm0, %%mm0 \n\t"\
 173             "psubw     %%mm1, %%mm0 \n\t"\
 174             "psrlw     $1,    %%mm1 \n\t" /* spatial_pred */\
 175             PABS(      %%mm2, %%mm0)      /* ABS(c-e) */\
 176 \
 177             "movq -1(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1] */\
 178             "movq -1(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1] */\
 179             "movq      %%mm2, %%mm4 \n\t"\
 180             "psubusb   %%mm3, %%mm2 \n\t"\
 181             "psubusb   %%mm4, %%mm3 \n\t"\
 182             "pmaxub    %%mm3, %%mm2 \n\t"\
 183             "pshufw $9,%%mm2, %%mm3 \n\t"\
 184             "punpcklbw %%mm7, %%mm2 \n\t" /* ABS(cur[x-refs-1] - cur[x+refs-1]) */\
 185             "punpcklbw %%mm7, %%mm3 \n\t" /* ABS(cur[x-refs+1] - cur[x+refs+1]) */\
 186             "paddw     %%mm2, %%mm0 \n\t"\
 187             "paddw     %%mm3, %%mm0 \n\t"\
 188             "psubw    %[pw1], %%mm0 \n\t" /* spatial_score */\
 189 \
 190             CHECK(-2,0)\
 191             CHECK1\
 192             CHECK(-3,1)\
 193             CHECK2\
 194             CHECK(0,-2)\
 195             CHECK1\
 196             CHECK(1,-3)\
 197             CHECK2\
 198 \
 199             /* if(p->mode<2) ... */\
 200             "movq    %[tmp3], %%mm6 \n\t" /* diff */\
 201             "cmpl      $2, %[mode] \n\t"\
 202             "jge       1f \n\t"\
 203             LOAD4("(%["prev2"],%[mrefs],2)", %%mm2) /* prev2[x-2*refs] */\
 204             LOAD4("(%["next2"],%[mrefs],2)", %%mm4) /* next2[x-2*refs] */\
 205             LOAD4("(%["prev2"],%[prefs],2)", %%mm3) /* prev2[x+2*refs] */\
 206             LOAD4("(%["next2"],%[prefs],2)", %%mm5) /* next2[x+2*refs] */\
 207             "paddw     %%mm4, %%mm2 \n\t"\
 208             "paddw     %%mm5, %%mm3 \n\t"\
 209             "psrlw     $1,    %%mm2 \n\t" /* b */\
 210             "psrlw     $1,    %%mm3 \n\t" /* f */\
 211             "movq    %[tmp0], %%mm4 \n\t" /* c */\
 212             "movq    %[tmp1], %%mm5 \n\t" /* d */\
 213             "movq    %[tmp2], %%mm7 \n\t" /* e */\
 214             "psubw     %%mm4, %%mm2 \n\t" /* b-c */\
 215             "psubw     %%mm7, %%mm3 \n\t" /* f-e */\
 216             "movq      %%mm5, %%mm0 \n\t"\
 217             "psubw     %%mm4, %%mm5 \n\t" /* d-c */\
 218             "psubw     %%mm7, %%mm0 \n\t" /* d-e */\
 219             "movq      %%mm2, %%mm4 \n\t"\
 220             "pminsw    %%mm3, %%mm2 \n\t"\
 221             "pmaxsw    %%mm4, %%mm3 \n\t"\
 222             "pmaxsw    %%mm5, %%mm2 \n\t"\
 223             "pminsw    %%mm5, %%mm3 \n\t"\
 224             "pmaxsw    %%mm0, %%mm2 \n\t" /* max */\
 225             "pminsw    %%mm0, %%mm3 \n\t" /* min */\
 226             "pxor      %%mm4, %%mm4 \n\t"\
 227             "pmaxsw    %%mm3, %%mm6 \n\t"\
 228             "psubw     %%mm2, %%mm4 \n\t" /* -max */\
 229             "pmaxsw    %%mm4, %%mm6 \n\t" /* diff= MAX3(diff, min, -max); */\
 230             "1: \n\t"\
 231 \
 232             "movq    %[tmp1], %%mm2 \n\t" /* d */\
 233             "movq      %%mm2, %%mm3 \n\t"\
 234             "psubw     %%mm6, %%mm2 \n\t" /* d-diff */\
 235             "paddw     %%mm6, %%mm3 \n\t" /* d+diff */\
 236             "pmaxsw    %%mm2, %%mm1 \n\t"\
 237             "pminsw    %%mm3, %%mm1 \n\t" /* d = clip(spatial_pred, d-diff, d+diff); */\
 238             "packuswb  %%mm1, %%mm1 \n\t"\
 239 \
 240             :[tmp0]"=m"(tmp0),\
 241              [tmp1]"=m"(tmp1),\
 242              [tmp2]"=m"(tmp2),\
 243              [tmp3]"=m"(tmp3)\
 244             :[prev] "r"(prev),\
 245              [cur]  "r"(cur),\
 246              [next] "r"(next),\
 247              [prefs]"r"((x86_reg)refs),\
 248              [mrefs]"r"((x86_reg)-refs),\
 249              [pw1]  "m"(pw_1),\
 250              [pb1]  "m"(pb_1),\
 251              [mode] "g"(mode)\
 252         );\
 253         __asm__ volatile("movd %%mm1, %0" :"=m"(*dst));\
 254         dst += 4;\
 255         prev+= 4;\
 256         cur += 4;\
 257         next+= 4;\
 258     }
 259
 260     if(parity){
 261 #define prev2 "prev"
 262 #define next2 "cur"
 263         FILTER
 264 #undef prev2
 265 #undef next2
 266     }else{
 267 #define prev2 "cur"
 268 #define next2 "next"
 269         FILTER
 270 #undef prev2
 271 #undef next2
 272     }
 273 }
 274 #undef LOAD4
 275 #undef PABS
 276 #undef CHECK
 277 #undef CHECK1
 278 #undef CHECK2
 279 #undef FILTER
 280
 281 #endif /* HAVE_MMX */
 282
 283 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){
 284     int x;
 285     uint8_t *prev2= parity ? prev : cur ;
 286     uint8_t *next2= parity ? cur  : next;
 287     for(x=0; x<w; x++){
 288         int c= cur[-refs];
 289         int d= (prev2[0] + next2[0])>>1;
 290         int e= cur[+refs];
 291         int temporal_diff0= FFABS(prev2[0] - next2[0]);
 292         int temporal_diff1=( FFABS(prev[-refs] - c) + FFABS(prev[+refs] - e) )>>1;
 293         int temporal_diff2=( FFABS(next[-refs] - c) + FFABS(next[+refs] - e) )>>1;
 294         int diff= FFMAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2);
 295         int spatial_pred= (c+e)>>1;
 296         int spatial_score= FFABS(cur[-refs-1] - cur[+refs-1]) + FFABS(c-e)
 297                          + FFABS(cur[-refs+1] - cur[+refs+1]) - 1;
 298
 299 #define CHECK(j)\
 300     {   int score= FFABS(cur[-refs-1+j] - cur[+refs-1-j])\
 301                  + FFABS(cur[-refs  +j] - cur[+refs  -j])\
 302                  + FFABS(cur[-refs+1+j] - cur[+refs+1-j]);\
 303         if(score < spatial_score){\
 304             spatial_score= score;\
 305             spatial_pred= (cur[-refs  +j] + cur[+refs  -j])>>1;\
 306
 307         CHECK(-1) CHECK(-2) }} }}
 308         CHECK( 1) CHECK( 2) }} }}
 309
 310         if(p->mode<2){
 311             int b= (prev2[-2*refs] + next2[-2*refs])>>1;
 312             int f= (prev2[+2*refs] + next2[+2*refs])>>1;
 313 #if 0
 314             int a= cur[-3*refs];
 315             int g= cur[+3*refs];
 316             int max= FFMAX3(d-e, d-c, FFMIN3(FFMAX(b-c,f-e),FFMAX(b-c,b-a),FFMAX(f-g,f-e)) );
 317             int min= FFMIN3(d-e, d-c, FFMAX3(FFMIN(b-c,f-e),FFMIN(b-c,b-a),FFMIN(f-g,f-e)) );
 318 #else
 319             int max= FFMAX3(d-e, d-c, FFMIN(b-c, f-e));
 320             int min= FFMIN3(d-e, d-c, FFMAX(b-c, f-e));
 321 #endif
 322
 323             diff= FFMAX3(diff, min, -max);
 324         }
 325
 326         if(spatial_pred > d + diff)
 327            spatial_pred = d + diff;
 328         else if(spatial_pred < d - diff)
 329            spatial_pred = d - diff;
 330
 331         dst[0] = spatial_pred;
 332
 333         dst++;
 334         cur++;
 335         prev++;
 336         next++;
 337         prev2++;
 338         next2++;
 339     }
 340 }
 341
 342 static void filter(struct vf_priv_s *p, uint8_t *dst[3], int dst_stride[3], int width, int height, int parity, int tff){
 343     int y, i;
 344
 345     for(i=0; i<3; i++){
 346         int is_chroma= !!i;
 347         int w= width >>is_chroma;
 348         int h= height>>is_chroma;
 349         int refs= p->stride[i];
 350
 351         for(y=0; y<h; y++){
 352             if((y ^ parity) & 1){
 353                 uint8_t *prev= &p->ref[0][i][y*refs];
 354                 uint8_t *cur = &p->ref[1][i][y*refs];
 355                 uint8_t *next= &p->ref[2][i][y*refs];
 356                 uint8_t *dst2= &dst[i][y*dst_stride[i]];
 357                 filter_line(p, dst2, prev, cur, next, w, refs, parity ^ tff);
 358             }else{
 359                 fast_memcpy(&dst[i][y*dst_stride[i]], &p->ref[1][i][y*refs], w);
 360             }
 361         }
 362     }
 363 #if HAVE_MMX
 364     if(gCpuCaps.hasMMX2) __asm__ volatile("emms \n\t" : : : "memory");
 365 #endif
 366 }
 367
 368 static int config(struct vf_instance *vf,
 369         int width, int height, int d_width, int d_height,
 370         unsigned int flags, unsigned int outfmt){
 371         int i, j;
 372
 373         for(i=0; i<3; i++){
 374             int is_chroma= !!i;
 375             int w= ((width   + 31) & (~31))>>is_chroma;
 376             int h= ((height+6+ 31) & (~31))>>is_chroma;
 377
 378             vf->priv->stride[i]= w;
 379             for(j=0; j<3; j++)
 380                 vf->priv->ref[j][i]= (char *)malloc(w*h*sizeof(uint8_t))+3*w;
 381         }
 382
 383         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 384 }
 385
 386 static int continue_buffered_image(struct vf_instance *vf);
 387
 388 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
 389     int tff;
 390
 391     if(vf->priv->parity < 0) {
 392         if (mpi->fields & MP_IMGFIELD_ORDERED)
 393             tff = !!(mpi->fields & MP_IMGFIELD_TOP_FIRST);
 394         else
 395             tff = 1;
 396     }
 397     else tff = (vf->priv->parity&1)^1;
 398
 399     store_ref(vf->priv, mpi->planes, mpi->stride, mpi->w, mpi->h);
 400
 401     {
 402         double delta;
 403         if (vf->priv->buffered_pts == MP_NOPTS_VALUE)
 404             delta = 1001.0/60000.0; // delta = field time distance
 405         else
 406             delta = (pts - vf->priv->buffered_pts) / 2;
 407         if (delta <= 0.0 || delta >= 0.5)
 408             delta = 0.0;
 409         vf->priv->buffered_pts_delta = delta;
 410     }
 411
 412     vf->priv->buffered_mpi = mpi;
 413     vf->priv->buffered_tff = tff;
 414     vf->priv->buffered_i = 0;
 415     vf->priv->buffered_pts = pts;
 416
 417     if(vf->priv->do_deinterlace == 0)
 418         return vf_next_put_image(vf, mpi, pts);
 419     else if(vf->priv->do_deinterlace == 1){
 420         vf->priv->do_deinterlace= 2;
 421         return 0;
 422     }else
 423         return continue_buffered_image(vf);
 424 }
 425
 426 static int continue_buffered_image(struct vf_instance *vf)
 427 {
 428     mp_image_t *mpi = vf->priv->buffered_mpi;
 429     int tff = vf->priv->buffered_tff;
 430     double pts = vf->priv->buffered_pts;
 431     int i;
 432     int ret=0;
 433     mp_image_t *dmpi;
 434
 435     pts += (vf->priv->buffered_i - 0.5 * (vf->priv->mode&1)) * vf->priv->buffered_pts_delta;
 436
 437     for(i = vf->priv->buffered_i; i<=(vf->priv->mode&1); i++){
 438         dmpi=vf_get_image(vf->next,mpi->imgfmt,
 439             MP_IMGTYPE_TEMP,
 440             MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
 441             mpi->width,mpi->height);
 442         vf_clone_mpi_attributes(dmpi, mpi);
 443         filter(vf->priv, dmpi->planes, dmpi->stride, mpi->w, mpi->h, i ^ tff ^ 1, tff);
 444         if (i < (vf->priv->mode & 1))
 445             vf_queue_frame(vf, continue_buffered_image);
 446         ret |= vf_next_put_image(vf, dmpi, pts);
 447         break;
 448     }
 449     vf->priv->buffered_i = 1;
 450     return ret;
 451 }
 452
 453 static void uninit(struct vf_instance *vf){
 454     int i;
 455     if(!vf->priv) return;
 456
 457     for(i=0; i<3*3; i++){
 458         uint8_t **p= &vf->priv->ref[i%3][i/3];
 459         if(*p) free(*p - 3*vf->priv->stride[i/3]);
 460         *p= NULL;
 461     }
 462     free(vf->priv);
 463     vf->priv=NULL;
 464 }
 465
 466 //===========================================================================//
 467 static int query_format(struct vf_instance *vf, unsigned int fmt){
 468     switch(fmt){
 469         case IMGFMT_YV12:
 470         case IMGFMT_I420:
 471         case IMGFMT_IYUV:
 472         case IMGFMT_Y800:
 473         case IMGFMT_Y8:
 474             return vf_next_query_format(vf,fmt);
 475     }
 476     return 0;
 477 }
 478
 479 static int control(struct vf_instance *vf, int request, void* data){
 480     switch (request){
 481       case VFCTRL_GET_DEINTERLACE:
 482         *(int*)data = vf->priv->do_deinterlace;
 483         return CONTROL_OK;
 484       case VFCTRL_SET_DEINTERLACE:
 485         vf->priv->do_deinterlace = 2*!!*(int*)data;
 486         return CONTROL_OK;
 487     }
 488     return vf_next_control (vf, request, data);
 489 }
 490
 491 static int vf_open(vf_instance_t *vf, char *args){
 492
 493     vf->config=config;
 494     vf->put_image=put_image;
 495     vf->query_format=query_format;
 496     vf->uninit=uninit;
 497     vf->priv=malloc(sizeof(struct vf_priv_s));
 498     vf->control=control;
 499     memset(vf->priv, 0, sizeof(struct vf_priv_s));
 500
 501     vf->priv->mode=0;
 502     vf->priv->parity= -1;
 503     vf->priv->do_deinterlace=1;
 504
 505     if (args) sscanf(args, "%d:%d", &vf->priv->mode, &vf->priv->parity);
 506
 507     filter_line = filter_line_c;
 508 #if HAVE_MMX
 509     if(gCpuCaps.hasMMX2) filter_line = filter_line_mmx2;
 510 #endif
 511
 512     return 1;
 513 }
 514
 515 const vf_info_t vf_info_yadif = {
 516     "Yet Another DeInterlacing Filter",
 517     "yadif",
 518     "Michael Niedermayer",
 519     "",
 520     vf_open,
 521     NULL
 522 };