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libavfilter/libmpcodecs/vf_denoise3d.c

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00001 /*
00002  * Copyright (C) 2003 Daniel Moreno <comac@comac.darktech.org>
00003  *
00004  * This file is part of MPlayer.
00005  *
00006  * MPlayer is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * MPlayer is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License along
00017  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
00018  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00019  */
00020 
00021 #include <stdio.h>
00022 #include <stdlib.h>
00023 #include <string.h>
00024 #include <inttypes.h>
00025 #include <math.h>
00026 
00027 #include "mp_msg.h"
00028 #include "img_format.h"
00029 #include "mp_image.h"
00030 #include "vf.h"
00031 
00032 #define PARAM1_DEFAULT 4.0
00033 #define PARAM2_DEFAULT 3.0
00034 #define PARAM3_DEFAULT 6.0
00035 
00036 //===========================================================================//
00037 
00038 struct vf_priv_s {
00039         int Coefs[4][512];
00040         unsigned char *Line;
00041         mp_image_t *pmpi;
00042 };
00043 
00044 
00045 /***************************************************************************/
00046 
00047 
00048 static int config(struct vf_instance *vf,
00049         int width, int height, int d_width, int d_height,
00050         unsigned int flags, unsigned int outfmt){
00051 
00052         free(vf->priv->Line);
00053         vf->priv->Line = malloc(width);
00054         vf->priv->pmpi=NULL;
00055 //        vf->default_caps &= !VFCAP_ACCEPT_STRIDE;
00056 
00057         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
00058 }
00059 
00060 
00061 static void uninit(struct vf_instance *vf)
00062 {
00063     free(vf->priv->Line);
00064 }
00065 
00066 #define LowPass(Prev, Curr, Coef) (Curr + Coef[Prev - Curr])
00067 
00068 static void deNoise(unsigned char *Frame,        // mpi->planes[x]
00069                     unsigned char *FramePrev,    // pmpi->planes[x]
00070                     unsigned char *FrameDest,    // dmpi->planes[x]
00071                     unsigned char *LineAnt,      // vf->priv->Line (width bytes)
00072                     int W, int H, int sStride, int pStride, int dStride,
00073                     int *Horizontal, int *Vertical, int *Temporal)
00074 {
00075     int X, Y;
00076     int sLineOffs = 0, pLineOffs = 0, dLineOffs = 0;
00077     unsigned char PixelAnt;
00078 
00079     /* First pixel has no left nor top neighbor. Only previous frame */
00080     LineAnt[0] = PixelAnt = Frame[0];
00081     FrameDest[0] = LowPass(FramePrev[0], LineAnt[0], Temporal);
00082 
00083     /* Fist line has no top neighbor. Only left one for each pixel and
00084      * last frame */
00085     for (X = 1; X < W; X++)
00086     {
00087         PixelAnt = LowPass(PixelAnt, Frame[X], Horizontal);
00088         LineAnt[X] = PixelAnt;
00089         FrameDest[X] = LowPass(FramePrev[X], LineAnt[X], Temporal);
00090     }
00091 
00092     for (Y = 1; Y < H; Y++)
00093     {
00094         sLineOffs += sStride, pLineOffs += pStride, dLineOffs += dStride;
00095         /* First pixel on each line doesn't have previous pixel */
00096         PixelAnt = Frame[sLineOffs];
00097         LineAnt[0] = LowPass(LineAnt[0], PixelAnt, Vertical);
00098         FrameDest[dLineOffs] = LowPass(FramePrev[pLineOffs], LineAnt[0], Temporal);
00099 
00100         for (X = 1; X < W; X++)
00101         {
00102             /* The rest are normal */
00103             PixelAnt = LowPass(PixelAnt, Frame[sLineOffs+X], Horizontal);
00104             LineAnt[X] = LowPass(LineAnt[X], PixelAnt, Vertical);
00105             FrameDest[dLineOffs+X] = LowPass(FramePrev[pLineOffs+X], LineAnt[X], Temporal);
00106         }
00107     }
00108 }
00109 
00110 
00111 
00112 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
00113         int cw= mpi->w >> mpi->chroma_x_shift;
00114         int ch= mpi->h >> mpi->chroma_y_shift;
00115         int W = mpi->w, H = mpi->h;
00116 
00117         mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
00118                 MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE |
00119                 MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
00120                 mpi->w,mpi->h);
00121 
00122         if(!dmpi) return 0;
00123         if (!vf->priv->pmpi) vf->priv->pmpi=mpi;
00124 
00125         deNoise(mpi->planes[0], vf->priv->pmpi->planes[0], dmpi->planes[0],
00126                 vf->priv->Line, W, H,
00127                 mpi->stride[0], vf->priv->pmpi->stride[0], dmpi->stride[0],
00128                 vf->priv->Coefs[0] + 256,
00129                 vf->priv->Coefs[0] + 256,
00130                 vf->priv->Coefs[1] + 256);
00131         deNoise(mpi->planes[1], vf->priv->pmpi->planes[1], dmpi->planes[1],
00132                 vf->priv->Line, cw, ch,
00133                 mpi->stride[1], vf->priv->pmpi->stride[1], dmpi->stride[1],
00134                 vf->priv->Coefs[2] + 256,
00135                 vf->priv->Coefs[2] + 256,
00136                 vf->priv->Coefs[3] + 256);
00137         deNoise(mpi->planes[2], vf->priv->pmpi->planes[2], dmpi->planes[2],
00138                 vf->priv->Line, cw, ch,
00139                 mpi->stride[2], vf->priv->pmpi->stride[2], dmpi->stride[2],
00140                 vf->priv->Coefs[2] + 256,
00141                 vf->priv->Coefs[2] + 256,
00142                 vf->priv->Coefs[3] + 256);
00143 
00144         vf->priv->pmpi=dmpi; // save reference image
00145         return vf_next_put_image(vf,dmpi, pts);
00146 }
00147 
00148 //===========================================================================//
00149 
00150 static int query_format(struct vf_instance *vf, unsigned int fmt){
00151         switch(fmt)
00152         {
00153         case IMGFMT_YV12:
00154         case IMGFMT_I420:
00155         case IMGFMT_IYUV:
00156         case IMGFMT_YVU9:
00157         case IMGFMT_444P:
00158         case IMGFMT_422P:
00159         case IMGFMT_411P:
00160                 return vf_next_query_format(vf, fmt);
00161         }
00162         return 0;
00163 }
00164 
00165 
00166 #define ABS(A) ( (A) > 0 ? (A) : -(A) )
00167 
00168 static void PrecalcCoefs(int *Ct, double Dist25)
00169 {
00170     int i;
00171     double Gamma, Simil, C;
00172 
00173     Gamma = log(0.25) / log(1.0 - Dist25/255.0);
00174 
00175     for (i = -256; i <= 255; i++)
00176     {
00177         Simil = 1.0 - ABS(i) / 255.0;
00178 //        Ct[256+i] = lround(pow(Simil, Gamma) * (double)i);
00179         C = pow(Simil, Gamma) * (double)i;
00180         Ct[256+i] = (C<0) ? (C-0.5) : (C+0.5);
00181     }
00182 }
00183 
00184 
00185 static int vf_open(vf_instance_t *vf, char *args){
00186         double LumSpac, LumTmp, ChromSpac, ChromTmp;
00187         double Param1, Param2, Param3;
00188 
00189         vf->config=config;
00190         vf->put_image=put_image;
00191         vf->query_format=query_format;
00192         vf->uninit=uninit;
00193         vf->priv=malloc(sizeof(struct vf_priv_s));
00194         memset(vf->priv, 0, sizeof(struct vf_priv_s));
00195 
00196         if (args)
00197         {
00198             switch(sscanf(args, "%lf:%lf:%lf",
00199                           &Param1, &Param2, &Param3
00200                          ))
00201             {
00202             case 0:
00203                 LumSpac = PARAM1_DEFAULT;
00204                 LumTmp = PARAM3_DEFAULT;
00205 
00206                 ChromSpac = PARAM2_DEFAULT;
00207                 ChromTmp = LumTmp * ChromSpac / LumSpac;
00208                 break;
00209 
00210             case 1:
00211                 LumSpac = Param1;
00212                 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
00213 
00214                 ChromSpac = PARAM2_DEFAULT * Param1 / PARAM1_DEFAULT;
00215                 ChromTmp = LumTmp * ChromSpac / LumSpac;
00216                 break;
00217 
00218             case 2:
00219                 LumSpac = Param1;
00220                 LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
00221 
00222                 ChromSpac = Param2;
00223                 ChromTmp = LumTmp * ChromSpac / LumSpac;
00224                 break;
00225 
00226             case 3:
00227                 LumSpac = Param1;
00228                 LumTmp = Param3;
00229 
00230                 ChromSpac = Param2;
00231                 ChromTmp = LumTmp * ChromSpac / LumSpac;
00232                 break;
00233 
00234             default:
00235                 LumSpac = PARAM1_DEFAULT;
00236                 LumTmp = PARAM3_DEFAULT;
00237 
00238                 ChromSpac = PARAM2_DEFAULT;
00239                 ChromTmp = LumTmp * ChromSpac / LumSpac;
00240             }
00241         }
00242         else
00243         {
00244             LumSpac = PARAM1_DEFAULT;
00245             LumTmp = PARAM3_DEFAULT;
00246 
00247             ChromSpac = PARAM2_DEFAULT;
00248             ChromTmp = LumTmp * ChromSpac / LumSpac;
00249         }
00250 
00251         PrecalcCoefs(vf->priv->Coefs[0], LumSpac);
00252         PrecalcCoefs(vf->priv->Coefs[1], LumTmp);
00253         PrecalcCoefs(vf->priv->Coefs[2], ChromSpac);
00254         PrecalcCoefs(vf->priv->Coefs[3], ChromTmp);
00255 
00256         return 1;
00257 }
00258 
00259 const vf_info_t vf_info_denoise3d = {
00260     "3D Denoiser (variable lowpass filter)",
00261     "denoise3d",
00262     "Daniel Moreno",
00263     "",
00264     vf_open,
00265     NULL
00266 };
00267 
00268 //===========================================================================//
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