libmpcodecs/vf_sab.c

   1 /*
   2  * Copyright (C) 2002 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 <assert.h>
  26
  27 #include "config.h"
  28 #include "mp_msg.h"
  29
  30 #if HAVE_MALLOC_H
  31 #include <malloc.h>
  32 #endif
  33
  34 #include "libavutil/avutil.h"
  35 #include "img_format.h"
  36 #include "mp_image.h"
  37 #include "vf.h"
  38 #include "libswscale/swscale.h"
  39 #include "vf_scale.h"
  40
  41
  42 //===========================================================================//
  43
  44 typedef struct FilterParam{
  45         float radius;
  46         float preFilterRadius;
  47         float strength;
  48         float quality;
  49         struct SwsContext *preFilterContext;
  50         uint8_t *preFilterBuf;
  51         int preFilterStride;
  52         int distWidth;
  53         int distStride;
  54         int *distCoeff;
  55         int colorDiffCoeff[512];
  56 }FilterParam;
  57
  58 struct vf_priv_s {
  59         FilterParam luma;
  60         FilterParam chroma;
  61 };
  62
  63
  64 /***************************************************************************/
  65
  66 static int allocStuff(FilterParam *f, int width, int height){
  67         int stride= (width+7)&~7;
  68         SwsVector *vec;
  69         SwsFilter swsF;
  70         int i,x,y;
  71         f->preFilterBuf= av_malloc(stride*height);
  72         f->preFilterStride= stride;
  73
  74         vec = sws_getGaussianVec(f->preFilterRadius, f->quality);
  75         swsF.lumH= swsF.lumV= vec;
  76         swsF.chrH= swsF.chrV= NULL;
  77         f->preFilterContext= sws_getContext(
  78                 width, height, PIX_FMT_GRAY8, width, height, PIX_FMT_GRAY8, get_sws_cpuflags()|SWS_POINT, &swsF, NULL, NULL);
  79
  80         sws_freeVec(vec);
  81         vec = sws_getGaussianVec(f->strength, 5.0);
  82         for(i=0; i<512; i++){
  83                 double d;
  84                 int index= i-256 + vec->length/2;
  85
  86                 if(index<0 || index>=vec->length)       d= 0.0;
  87                 else                                    d= vec->coeff[index];
  88
  89                 f->colorDiffCoeff[i]= (int)(d/vec->coeff[vec->length/2]*(1<<12) + 0.5);
  90         }
  91         sws_freeVec(vec);
  92         vec = sws_getGaussianVec(f->radius, f->quality);
  93         f->distWidth= vec->length;
  94         f->distStride= (vec->length+7)&~7;
  95         f->distCoeff= av_malloc(f->distWidth*f->distStride*sizeof(int32_t));
  96
  97         for(y=0; y<vec->length; y++){
  98                 for(x=0; x<vec->length; x++){
  99                         double d= vec->coeff[x] * vec->coeff[y];
 100
 101                         f->distCoeff[x + y*f->distStride]= (int)(d*(1<<10) + 0.5);
 102 //                      if(y==vec->length/2)
 103 //                              printf("%6d ", f->distCoeff[x + y*f->distStride]);
 104                 }
 105         }
 106         sws_freeVec(vec);
 107
 108         return 0;
 109 }
 110
 111 static int config(struct vf_instance *vf,
 112         int width, int height, int d_width, int d_height,
 113         unsigned int flags, unsigned int outfmt){
 114
 115         int sw, sh;
 116 //__asm__ volatile("emms\n\t");
 117         allocStuff(&vf->priv->luma, width, height);
 118
 119         mp_get_chroma_shift(outfmt, &sw, &sh, NULL);
 120         allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
 121
 122         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 123 }
 124
 125 static void freeBuffers(FilterParam *f){
 126         if(f->preFilterContext) sws_freeContext(f->preFilterContext);
 127         f->preFilterContext=NULL;
 128
 129         av_free(f->preFilterBuf);
 130         f->preFilterBuf=NULL;
 131
 132         av_free(f->distCoeff);
 133         f->distCoeff=NULL;
 134 }
 135
 136 static void uninit(struct vf_instance *vf){
 137         if(!vf->priv) return;
 138
 139         freeBuffers(&vf->priv->luma);
 140         freeBuffers(&vf->priv->chroma);
 141
 142         free(vf->priv);
 143         vf->priv=NULL;
 144 }
 145
 146 static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
 147         int x, y;
 148         FilterParam f= *fp;
 149         const int radius= f.distWidth/2;
 150         const uint8_t* const srcArray[MP_MAX_PLANES] = {src};
 151         uint8_t *dstArray[MP_MAX_PLANES]= {f.preFilterBuf};
 152         int srcStrideArray[MP_MAX_PLANES]= {srcStride};
 153         int dstStrideArray[MP_MAX_PLANES]= {f.preFilterStride};
 154
 155 //      f.preFilterContext->swScale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 156         sws_scale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 157
 158         for(y=0; y<h; y++){
 159                 for(x=0; x<w; x++){
 160                         int sum=0;
 161                         int div=0;
 162                         int dy;
 163                         const int preVal= f.preFilterBuf[x + y*f.preFilterStride];
 164 #if 0
 165                         const int srcVal= src[x + y*srcStride];
 166 if((x/32)&1){
 167     dst[x + y*dstStride]= srcVal;
 168     if(y%32==0) dst[x + y*dstStride]= 0;
 169     continue;
 170 }
 171 #endif
 172                         if(x >= radius && x < w - radius){
 173                                 for(dy=0; dy<radius*2+1; dy++){
 174                                         int dx;
 175                                         int iy= y+dy - radius;
 176                                         if     (iy<0)  iy=  -iy;
 177                                         else if(iy>=h) iy= h+h-iy-1;
 178
 179                                         for(dx=0; dx<radius*2+1; dx++){
 180                                                 const int ix= x+dx - radius;
 181                                                 int factor;
 182
 183                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 184                                                         *f.distCoeff[dx + dy*f.distStride];
 185                                                 sum+= src[ix + iy*srcStride] *factor;
 186                                                 div+= factor;
 187                                         }
 188                                 }
 189                         }else{
 190                                 for(dy=0; dy<radius*2+1; dy++){
 191                                         int dx;
 192                                         int iy= y+dy - radius;
 193                                         if     (iy<0)  iy=  -iy;
 194                                         else if(iy>=h) iy= h+h-iy-1;
 195
 196                                         for(dx=0; dx<radius*2+1; dx++){
 197                                                 int ix= x+dx - radius;
 198                                                 int factor;
 199                                                 if     (ix<0)  ix=  -ix;
 200                                                 else if(ix>=w) ix= w+w-ix-1;
 201
 202                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 203                                                         *f.distCoeff[dx + dy*f.distStride];
 204                                                 sum+= src[ix + iy*srcStride] *factor;
 205                                                 div+= factor;
 206                                         }
 207                                 }
 208                         }
 209                         dst[x + y*dstStride]= (sum + div/2)/div;
 210                 }
 211         }
 212 }
 213
 214 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
 215         int cw= mpi->w >> mpi->chroma_x_shift;
 216         int ch= mpi->h >> mpi->chroma_y_shift;
 217
 218         mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
 219                 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 220                 mpi->w,mpi->h);
 221
 222         assert(mpi->flags&MP_IMGFLAG_PLANAR);
 223
 224         blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
 225         blur(dmpi->planes[1], mpi->planes[1], cw    , ch   , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
 226         blur(dmpi->planes[2], mpi->planes[2], cw    , ch   , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
 227
 228         return vf_next_put_image(vf,dmpi, pts);
 229 }
 230
 231 //===========================================================================//
 232
 233 static int query_format(struct vf_instance *vf, unsigned int fmt){
 234         switch(fmt)
 235         {
 236         case IMGFMT_YV12:
 237         case IMGFMT_I420:
 238         case IMGFMT_IYUV:
 239         case IMGFMT_YVU9:
 240         case IMGFMT_444P:
 241         case IMGFMT_422P:
 242         case IMGFMT_411P:
 243                 return vf_next_query_format(vf, fmt);
 244         }
 245         return 0;
 246 }
 247
 248 static int vf_open(vf_instance_t *vf, char *args){
 249         int e;
 250
 251         vf->config=config;
 252         vf->put_image=put_image;
 253 //      vf->get_image=get_image;
 254         vf->query_format=query_format;
 255         vf->uninit=uninit;
 256         vf->priv=malloc(sizeof(struct vf_priv_s));
 257         memset(vf->priv, 0, sizeof(struct vf_priv_s));
 258
 259         if(args==NULL) return 0;
 260
 261         e=sscanf(args, "%f:%f:%f:%f:%f:%f",
 262                 &vf->priv->luma.radius,
 263                 &vf->priv->luma.preFilterRadius,
 264                 &vf->priv->luma.strength,
 265                 &vf->priv->chroma.radius,
 266                 &vf->priv->chroma.preFilterRadius,
 267                 &vf->priv->chroma.strength
 268                 );
 269
 270         vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
 271
 272         if(e==3){
 273                 vf->priv->chroma.radius= vf->priv->luma.radius;
 274                 vf->priv->chroma.preFilterRadius = vf->priv->luma.preFilterRadius;
 275                 vf->priv->chroma.strength= vf->priv->luma.strength;
 276         }else if(e!=6)
 277                 return 0;
 278
 279 //      if(vf->priv->luma.radius < 0) return 0;
 280 //      if(vf->priv->chroma.radius < 0) return 0;
 281
 282         return 1;
 283 }
 284
 285 const vf_info_t vf_info_sab = {
 286     "shape adaptive blur",
 287     "sab",
 288     "Michael Niedermayer",
 289     "",
 290     vf_open,
 291     NULL
 292 };
 293
 294 //===========================================================================//