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