libmpcodecs/vf_denoise3d.c

   1 /*
   2  * Copyright (C) 2003 Daniel Moreno <comac@comac.darktech.org>
   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 "mp_msg.h"
  28 #include "img_format.h"
  29 #include "mp_image.h"
  30 #include "vf.h"
  31
  32 #define PARAM1_DEFAULT 4.0
  33 #define PARAM2_DEFAULT 3.0
  34 #define PARAM3_DEFAULT 6.0
  35
  36 //===========================================================================//
  37
  38 struct vf_priv_s {
  39         int Coefs[4][512];
  40         unsigned char *Line;
  41         mp_image_t *pmpi;
  42 };
  43
  44
  45 /***************************************************************************/
  46
  47
  48 static int config(struct vf_instance *vf,
  49         int width, int height, int d_width, int d_height,
  50         unsigned int flags, unsigned int outfmt){
  51
  52         free(vf->priv->Line);
  53         vf->priv->Line = malloc(width);
  54         vf->priv->pmpi=NULL;
  55 //        vf->default_caps &= !VFCAP_ACCEPT_STRIDE;
  56
  57         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
  58 }
  59
  60
  61 static void uninit(struct vf_instance *vf)
  62 {
  63     free(vf->priv->Line);
  64 }
  65
  66 #define LowPass(Prev, Curr, Coef) (Curr + Coef[Prev - Curr])
  67
  68 static void deNoise(unsigned char *Frame,        // mpi->planes[x]
  69                     unsigned char *FramePrev,    // pmpi->planes[x]
  70                     unsigned char *FrameDest,    // dmpi->planes[x]
  71                     unsigned char *LineAnt,      // vf->priv->Line (width bytes)
  72                     int W, int H, int sStride, int pStride, int dStride,
  73                     int *Horizontal, int *Vertical, int *Temporal)
  74 {
  75     int X, Y;
  76     int sLineOffs = 0, pLineOffs = 0, dLineOffs = 0;
  77     unsigned char PixelAnt;
  78
  79     /* First pixel has no left nor top neighbor. Only previous frame */
  80     LineAnt[0] = PixelAnt = Frame[0];
  81     FrameDest[0] = LowPass(FramePrev[0], LineAnt[0], Temporal);
  82
  83     /* Fist line has no top neighbor. Only left one for each pixel and
  84      * last frame */
  85     for (X = 1; X < W; X++)
  86     {
  87         PixelAnt = LowPass(PixelAnt, Frame[X], Horizontal);
  88         LineAnt[X] = PixelAnt;
  89         FrameDest[X] = LowPass(FramePrev[X], LineAnt[X], Temporal);
  90     }
  91
  92     for (Y = 1; Y < H; Y++)
  93     {
  94         sLineOffs += sStride, pLineOffs += pStride, dLineOffs += dStride;
  95         /* First pixel on each line doesn't have previous pixel */
  96         PixelAnt = Frame[sLineOffs];
  97         LineAnt[0] = LowPass(LineAnt[0], PixelAnt, Vertical);
  98         FrameDest[dLineOffs] = LowPass(FramePrev[pLineOffs], LineAnt[0], Temporal);
  99
 100         for (X = 1; X < W; X++)
 101         {
 102             /* The rest are normal */
 103             PixelAnt = LowPass(PixelAnt, Frame[sLineOffs+X], Horizontal);
 104             LineAnt[X] = LowPass(LineAnt[X], PixelAnt, Vertical);
 105             FrameDest[dLineOffs+X] = LowPass(FramePrev[pLineOffs+X], LineAnt[X], Temporal);
 106         }
 107     }
 108 }
 109
 110
 111
 112 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
 113         int cw= mpi->w >> mpi->chroma_x_shift;
 114         int ch= mpi->h >> mpi->chroma_y_shift;
 115         int W = mpi->w, H = mpi->h;
 116
 117         mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
 118                 MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE |
 119                 MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
 120                 mpi->w,mpi->h);
 121
 122         if(!dmpi) return 0;
 123         if (!vf->priv->pmpi) vf->priv->pmpi=mpi;
 124
 125         deNoise(mpi->planes[0], vf->priv->pmpi->planes[0], dmpi->planes[0],
 126                 vf->priv->Line, W, H,
 127                 mpi->stride[0], vf->priv->pmpi->stride[0], dmpi->stride[0],
 128                 vf->priv->Coefs[0] + 256,
 129                 vf->priv->Coefs[0] + 256,
 130                 vf->priv->Coefs[1] + 256);
 131         deNoise(mpi->planes[1], vf->priv->pmpi->planes[1], dmpi->planes[1],
 132                 vf->priv->Line, cw, ch,
 133                 mpi->stride[1], vf->priv->pmpi->stride[1], dmpi->stride[1],
 134                 vf->priv->Coefs[2] + 256,
 135                 vf->priv->Coefs[2] + 256,
 136                 vf->priv->Coefs[3] + 256);
 137         deNoise(mpi->planes[2], vf->priv->pmpi->planes[2], dmpi->planes[2],
 138                 vf->priv->Line, cw, ch,
 139                 mpi->stride[2], vf->priv->pmpi->stride[2], dmpi->stride[2],
 140                 vf->priv->Coefs[2] + 256,
 141                 vf->priv->Coefs[2] + 256,
 142                 vf->priv->Coefs[3] + 256);
 143
 144         vf->priv->pmpi=dmpi; // save reference image
 145         return vf_next_put_image(vf,dmpi, pts);
 146 }
 147
 148 //===========================================================================//
 149
 150 static int query_format(struct vf_instance *vf, unsigned int fmt){
 151         switch(fmt)
 152         {
 153         case IMGFMT_YV12:
 154         case IMGFMT_I420:
 155         case IMGFMT_IYUV:
 156         case IMGFMT_YVU9:
 157         case IMGFMT_444P:
 158         case IMGFMT_422P:
 159         case IMGFMT_411P:
 160                 return vf_next_query_format(vf, fmt);
 161         }
 162         return 0;
 163 }
 164
 165
 166 #define ABS(A) ( (A) > 0 ? (A) : -(A) )
 167
 168 static void PrecalcCoefs(int *Ct, double Dist25)
 169 {
 170     int i;
 171     double Gamma, Simil, C;
 172
 173     Gamma = log(0.25) / log(1.0 - Dist25/255.0);
 174
 175     for (i = -256; i <= 255; i++)
 176     {
 177         Simil = 1.0 - ABS(i) / 255.0;
 178 //        Ct[256+i] = lround(pow(Simil, Gamma) * (double)i);
 179         C = pow(Simil, Gamma) * (double)i;
 180         Ct[256+i] = (C<0) ? (C-0.5) : (C+0.5);
 181     }
 182 }
 183
 184
 185 static int vf_open(vf_instance_t *vf, char *args){
 186         double LumSpac, LumTmp, ChromSpac, ChromTmp;
 187         double Param1, Param2, Param3;
 188
 189         vf->config=config;
 190         vf->put_image=put_image;
 191         vf->query_format=query_format;
 192         vf->uninit=uninit;
 193         vf->priv=malloc(sizeof(struct vf_priv_s));
 194         memset(vf->priv, 0, sizeof(struct vf_priv_s));
 195
 196         if (args)
 197         {
 198             switch(sscanf(args, "%lf:%lf:%lf",
 199                           &Param1, &Param2, &Param3
 200                          ))
 201             {
 202             case 0:
 203                 LumSpac = PARAM1_DEFAULT;
 204                 LumTmp = PARAM3_DEFAULT;
 205
 206                 ChromSpac = PARAM2_DEFAULT;
 207                 ChromTmp = LumTmp * ChromSpac / LumSpac;
 208                 break;
 209
 210             case 1:
 211                 LumSpac = Param1;
 212                 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
 213
 214                 ChromSpac = PARAM2_DEFAULT * Param1 / PARAM1_DEFAULT;
 215                 ChromTmp = LumTmp * ChromSpac / LumSpac;
 216                 break;
 217
 218             case 2:
 219                 LumSpac = Param1;
 220                 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
 221
 222                 ChromSpac = Param2;
 223                 ChromTmp = LumTmp * ChromSpac / LumSpac;
 224                 break;
 225
 226             case 3:
 227                 LumSpac = Param1;
 228                 LumTmp = Param3;
 229
 230                 ChromSpac = Param2;
 231                 ChromTmp = LumTmp * ChromSpac / LumSpac;
 232                 break;
 233
 234             default:
 235                 LumSpac = PARAM1_DEFAULT;
 236                 LumTmp = PARAM3_DEFAULT;
 237
 238                 ChromSpac = PARAM2_DEFAULT;
 239                 ChromTmp = LumTmp * ChromSpac / LumSpac;
 240             }
 241         }
 242         else
 243         {
 244             LumSpac = PARAM1_DEFAULT;
 245             LumTmp = PARAM3_DEFAULT;
 246
 247             ChromSpac = PARAM2_DEFAULT;
 248             ChromTmp = LumTmp * ChromSpac / LumSpac;
 249         }
 250
 251         PrecalcCoefs(vf->priv->Coefs[0], LumSpac);
 252         PrecalcCoefs(vf->priv->Coefs[1], LumTmp);
 253         PrecalcCoefs(vf->priv->Coefs[2], ChromSpac);
 254         PrecalcCoefs(vf->priv->Coefs[3], ChromTmp);
 255
 256         return 1;
 257 }
 258
 259 const vf_info_t vf_info_denoise3d = {
 260     "3D Denoiser (variable lowpass filter)",
 261     "denoise3d",
 262     "Daniel Moreno",
 263     "",
 264     vf_open,
 265     NULL
 266 };
 267
 268 //===========================================================================//