git.sesse.net Git - ffmpeg/blob - libavfilter/libmpcodecs/vf_kerndeint.c

   1 /*
   2  * Original AVISynth Filter Copyright (C) 2003 Donald A. Graft
   3  *  Adapted to MPlayer by Tobias Diedrich
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer 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
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <inttypes.h>
  26 #include <math.h>
  27
  28 #include "mp_msg.h"
  29 #include "img_format.h"
  30 #include "mp_image.h"
  31 #include "vf.h"
  32 #include "libvo/fastmemcpy.h"
  33
  34 //===========================================================================//
  35
  36 struct vf_priv_s {
  37     int    frame;
  38     int    map;
  39     int    order;
  40     int    thresh;
  41     int    sharp;
  42     int    twoway;
  43     int    do_deinterlace;
  44 };
  45
  46
  47 /***************************************************************************/
  48
  49
  50 static int config(struct vf_instance *vf,
  51     int width, int height, int d_width, int d_height,
  52     unsigned int flags, unsigned int outfmt){
  53
  54     return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
  55 }
  56
  57
  58 static void uninit(struct vf_instance *vf)
  59 {
  60     free(vf->priv);
  61 }
  62
  63 static inline int IsRGB(mp_image_t *mpi)
  64 {
  65     return mpi->imgfmt == IMGFMT_RGB;
  66 }
  67
  68 static inline int IsYUY2(mp_image_t *mpi)
  69 {
  70     return mpi->imgfmt == IMGFMT_YUY2;
  71 }
  72
  73 #define PLANAR_Y 0
  74 #define PLANAR_U 1
  75 #define PLANAR_V 2
  76
  77 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  78     int cw= mpi->w >> mpi->chroma_x_shift;
  79     int ch= mpi->h >> mpi->chroma_y_shift;
  80     int W = mpi->w, H = mpi->h;
  81     const unsigned char *prvp, *prvpp, *prvpn, *prvpnn, *prvppp, *prvp4p, *prvp4n;
  82     const unsigned char *srcp_saved;
  83     const unsigned char *srcp, *srcpp, *srcpn, *srcpnn, *srcppp, *srcp3p, *srcp3n, *srcp4p, *srcp4n;
  84     unsigned char *dstp, *dstp_saved;
  85     int src_pitch;
  86     int psrc_pitch;
  87     int dst_pitch;
  88     int x, y, z;
  89     int n = vf->priv->frame++;
  90     int val, hi, lo, w, h;
  91     double valf;
  92     int plane;
  93     int threshold = vf->priv->thresh;
  94     int order = vf->priv->order;
  95     int map = vf->priv->map;
  96     int sharp = vf->priv->sharp;
  97     int twoway = vf->priv->twoway;
  98     mp_image_t *dmpi, *pmpi;
  99
 100     if(!vf->priv->do_deinterlace)
 101         return vf_next_put_image(vf, mpi, pts);
 102
 103     dmpi=vf_get_image(vf->next,mpi->imgfmt,
 104         MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE,
 105         mpi->w,mpi->h);
 106     pmpi=vf_get_image(vf->next,mpi->imgfmt,
 107         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 108         mpi->w,mpi->h);
 109     if(!dmpi) return 0;
 110
 111     for (z=0; z<mpi->num_planes; z++) {
 112         if (z == 0) plane = PLANAR_Y;
 113         else if (z == 1) plane = PLANAR_U;
 114         else plane = PLANAR_V;
 115
 116         h = plane == PLANAR_Y ? H : ch;
 117         w = plane == PLANAR_Y ? W : cw;
 118
 119         srcp = srcp_saved = mpi->planes[z];
 120         src_pitch = mpi->stride[z];
 121         psrc_pitch = pmpi->stride[z];
 122         dstp = dstp_saved = dmpi->planes[z];
 123         dst_pitch = dmpi->stride[z];
 124         srcp = srcp_saved + (1-order) * src_pitch;
 125         dstp = dstp_saved + (1-order) * dst_pitch;
 126
 127         for (y=0; y<h; y+=2) {
 128             fast_memcpy(dstp, srcp, w);
 129             srcp += 2*src_pitch;
 130             dstp += 2*dst_pitch;
 131         }
 132
 133         // Copy through the lines that will be missed below.
 134         fast_memcpy(dstp_saved + order*dst_pitch, srcp_saved + (1-order)*src_pitch, w);
 135         fast_memcpy(dstp_saved + (2+order)*dst_pitch, srcp_saved + (3-order)*src_pitch, w);
 136         fast_memcpy(dstp_saved + (h-2+order)*dst_pitch, srcp_saved + (h-1-order)*src_pitch, w);
 137         fast_memcpy(dstp_saved + (h-4+order)*dst_pitch, srcp_saved + (h-3-order)*src_pitch, w);
 138         /* For the other field choose adaptively between using the previous field
 139            or the interpolant from the current field. */
 140
 141         prvp = pmpi->planes[z] + 5*psrc_pitch - (1-order)*psrc_pitch;
 142         prvpp = prvp - psrc_pitch;
 143         prvppp = prvp - 2*psrc_pitch;
 144         prvp4p = prvp - 4*psrc_pitch;
 145         prvpn = prvp + psrc_pitch;
 146         prvpnn = prvp + 2*psrc_pitch;
 147         prvp4n = prvp + 4*psrc_pitch;
 148         srcp = srcp_saved + 5*src_pitch - (1-order)*src_pitch;
 149         srcpp = srcp - src_pitch;
 150         srcppp = srcp - 2*src_pitch;
 151         srcp3p = srcp - 3*src_pitch;
 152         srcp4p = srcp - 4*src_pitch;
 153         srcpn = srcp + src_pitch;
 154         srcpnn = srcp + 2*src_pitch;
 155         srcp3n = srcp + 3*src_pitch;
 156         srcp4n = srcp + 4*src_pitch;
 157         dstp =  dstp_saved  + 5*dst_pitch - (1-order)*dst_pitch;
 158         for (y = 5 - (1-order); y <= h - 5 - (1-order); y+=2)
 159         {
 160             for (x = 0; x < w; x++)
 161             {
 162                 if ((threshold == 0) || (n == 0) ||
 163                     (abs((int)prvp[x] - (int)srcp[x]) > threshold) ||
 164                     (abs((int)prvpp[x] - (int)srcpp[x]) > threshold) ||
 165                     (abs((int)prvpn[x] - (int)srcpn[x]) > threshold))
 166                 {
 167                     if (map == 1)
 168                     {
 169                         int g = x & ~3;
 170                         if (IsRGB(mpi) == 1)
 171                         {
 172                             dstp[g++] = 255;
 173                             dstp[g++] = 255;
 174                             dstp[g++] = 255;
 175                             dstp[g] = 255;
 176                             x = g;
 177                         }
 178                         else if (IsYUY2(mpi) == 1)
 179                         {
 180                             dstp[g++] = 235;
 181                             dstp[g++] = 128;
 182                             dstp[g++] = 235;
 183                             dstp[g] = 128;
 184                             x = g;
 185                         }
 186                         else
 187                         {
 188                             if (plane == PLANAR_Y) dstp[x] = 235;
 189                             else dstp[x] = 128;
 190                         }
 191                     }
 192                     else
 193                     {
 194                         if (IsRGB(mpi))
 195                         {
 196                             hi = 255;
 197                             lo = 0;
 198                         }
 199                         else if (IsYUY2(mpi))
 200                         {
 201                             hi = (x & 1) ? 240 : 235;
 202                             lo = 16;
 203                         }
 204                         else
 205                         {
 206                             hi = (plane == PLANAR_Y) ? 235 : 240;
 207                             lo = 16;
 208                         }
 209
 210                         if (sharp == 1)
 211                         {
 212                             if (twoway == 1)
 213                                 valf = + 0.526*((int)srcpp[x] + (int)srcpn[x])
 214                                    + 0.170*((int)srcp[x] + (int)prvp[x])
 215                                    - 0.116*((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
 216                                    - 0.026*((int)srcp3p[x] + (int)srcp3n[x])
 217                                    + 0.031*((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
 218                             else
 219                                 valf = + 0.526*((int)srcpp[x] + (int)srcpn[x])
 220                                    + 0.170*((int)prvp[x])
 221                                    - 0.116*((int)prvppp[x] + (int)prvpnn[x])
 222                                    - 0.026*((int)srcp3p[x] + (int)srcp3n[x])
 223                                    + 0.031*((int)prvp4p[x] + (int)prvp4p[x]);
 224                             if (valf > hi) valf = hi;
 225                             else if (valf < lo) valf = lo;
 226                             dstp[x] = (int) valf;
 227                         }
 228                         else
 229                         {
 230                             if (twoway == 1)
 231                                 val = (8*((int)srcpp[x] + (int)srcpn[x]) + 2*((int)srcp[x] + (int)prvp[x]) -
 232                                     (int)(srcppp[x]) - (int)(srcpnn[x]) -
 233                                     (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
 234                             else
 235                                 val = (8*((int)srcpp[x] + (int)srcpn[x]) + 2*((int)prvp[x]) -
 236                                     (int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
 237                             if (val > hi) val = hi;
 238                             else if (val < lo) val = lo;
 239                             dstp[x] = (int) val;
 240                         }
 241                     }
 242                 }
 243                 else
 244                 {
 245                     dstp[x] = srcp[x];
 246                 }
 247             }
 248             prvp  += 2*psrc_pitch;
 249             prvpp  += 2*psrc_pitch;
 250             prvppp  += 2*psrc_pitch;
 251             prvpn  += 2*psrc_pitch;
 252             prvpnn  += 2*psrc_pitch;
 253             prvp4p  += 2*psrc_pitch;
 254             prvp4n  += 2*psrc_pitch;
 255             srcp  += 2*src_pitch;
 256             srcpp += 2*src_pitch;
 257             srcppp += 2*src_pitch;
 258             srcp3p += 2*src_pitch;
 259             srcp4p += 2*src_pitch;
 260             srcpn += 2*src_pitch;
 261             srcpnn += 2*src_pitch;
 262             srcp3n += 2*src_pitch;
 263             srcp4n += 2*src_pitch;
 264             dstp  += 2*dst_pitch;
 265         }
 266
 267         srcp = mpi->planes[z];
 268         dstp = pmpi->planes[z];
 269         for (y=0; y<h; y++) {
 270             fast_memcpy(dstp, srcp, w);
 271             srcp += src_pitch;
 272             dstp += psrc_pitch;
 273         }
 274     }
 275
 276     return vf_next_put_image(vf,dmpi, pts);
 277 }
 278
 279 //===========================================================================//
 280
 281 static int query_format(struct vf_instance *vf, unsigned int fmt){
 282         switch(fmt)
 283     {
 284     case IMGFMT_YV12:
 285     case IMGFMT_RGB:
 286     case IMGFMT_YUY2:
 287         return vf_next_query_format(vf, fmt);
 288     }
 289     return 0;
 290 }
 291
 292 static int control(struct vf_instance *vf, int request, void* data){
 293     switch (request)
 294     {
 295     case VFCTRL_GET_DEINTERLACE:
 296         *(int*)data = vf->priv->do_deinterlace;
 297         return CONTROL_OK;
 298     case VFCTRL_SET_DEINTERLACE:
 299         vf->priv->do_deinterlace = *(int*)data;
 300         return CONTROL_OK;
 301     }
 302     return vf_next_control (vf, request, data);
 303 }
 304
 305 static int vf_open(vf_instance_t *vf, char *args){
 306
 307     vf->control=control;
 308     vf->config=config;
 309     vf->put_image=put_image;
 310         vf->query_format=query_format;
 311         vf->uninit=uninit;
 312     vf->priv=malloc(sizeof(struct vf_priv_s));
 313         memset(vf->priv, 0, sizeof(struct vf_priv_s));
 314
 315     vf->priv->frame = 0;
 316
 317     vf->priv->map = 0;
 318     vf->priv->order = 0;
 319     vf->priv->thresh = 10;
 320     vf->priv->sharp = 0;
 321     vf->priv->twoway = 0;
 322     vf->priv->do_deinterlace=1;
 323
 324         if (args)
 325         {
 326             sscanf(args, "%d:%d:%d:%d:%d",
 327         &vf->priv->thresh, &vf->priv->map,
 328         &vf->priv->order, &vf->priv->sharp,
 329         &vf->priv->twoway);
 330         }
 331     if (vf->priv->order > 1) vf->priv->order = 1;
 332
 333     return 1;
 334 }
 335
 336 const vf_info_t vf_info_kerndeint = {
 337     "Kernel Deinterlacer",
 338     "kerndeint",
 339     "Donald Graft",
 340     "",
 341     vf_open,
 342     NULL
 343 };
 344
 345 //===========================================================================//