libmpcodecs/vf_sab.c

   1 /*
   2     Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17 */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <inttypes.h>
  23 #include <assert.h>
  24
  25 #include "../config.h"
  26 #include "../mp_msg.h"
  27
  28 #ifdef HAVE_MALLOC_H
  29 #include <malloc.h>
  30 #endif
  31
  32 #include "img_format.h"
  33 #include "mp_image.h"
  34 #include "vf.h"
  35 #include "../libvo/fastmemcpy.h"
  36 #include "../postproc/swscale.h"
  37 #include "vf_scale.h"
  38
  39
  40 //===========================================================================//
  41
  42 typedef struct FilterParam{
  43         float radius;
  44         float preFilterRadius;
  45         float strength;
  46         float quality;
  47         struct SwsContext *preFilterContext;
  48         uint8_t *preFilterBuf;
  49         int preFilterStride;
  50         int distWidth;
  51         int distStride;
  52         int *distCoeff;
  53         int colorDiffCoeff[512];
  54 }FilterParam;
  55
  56 struct vf_priv_s {
  57         FilterParam luma;
  58         FilterParam chroma;
  59 };
  60
  61
  62 /***************************************************************************/
  63
  64 //FIXME stupid code duplication
  65 static void getSubSampleFactors(int *h, int *v, int format){
  66         switch(format){
  67         case IMGFMT_YV12:
  68         case IMGFMT_I420:
  69                 *h=1;
  70                 *v=1;
  71                 break;
  72         case IMGFMT_YVU9:
  73                 *h=2;
  74                 *v=2;
  75                 break;
  76         case IMGFMT_444P:
  77                 *h=0;
  78                 *v=0;
  79                 break;
  80         case IMGFMT_422P:
  81                 *h=1;
  82                 *v=0;
  83                 break;
  84         case IMGFMT_411P:
  85                 *h=2;
  86                 *v=0;
  87                 break;
  88         }
  89 }
  90
  91 static int allocStuff(FilterParam *f, int width, int height){
  92         int stride= (width+7)&~7;
  93         SwsVector *vec;
  94         SwsFilter swsF;
  95         int i,x,y;
  96         f->preFilterBuf= (uint8_t*)memalign(8, stride*height);
  97         f->preFilterStride= stride;
  98
  99         vec = sws_getGaussianVec(f->preFilterRadius, f->quality);
 100         swsF.lumH= swsF.lumV= vec;
 101         swsF.chrH= swsF.chrV= NULL;
 102         f->preFilterContext= sws_getContext(
 103                 width, height, IMGFMT_Y8, width, height, IMGFMT_Y8, get_sws_cpuflags(), &swsF, NULL);
 104
 105         sws_freeVec(vec);
 106         vec = sws_getGaussianVec(f->strength, 5.0);
 107         for(i=0; i<512; i++){
 108                 double d;
 109                 int index= i-256 + vec->length/2;
 110
 111                 if(index<0 || index>=vec->length)       d= 0.0;
 112                 else                                    d= vec->coeff[index];
 113
 114                 f->colorDiffCoeff[i]= (int)(d/vec->coeff[vec->length/2]*(1<<12) + 0.5);
 115         }
 116         sws_freeVec(vec);
 117         vec = sws_getGaussianVec(f->radius, f->quality);
 118         f->distWidth= vec->length;
 119         f->distStride= (vec->length+7)&~7;
 120         f->distCoeff= (int32_t*)memalign(8, f->distWidth*f->distStride*sizeof(int32_t));
 121
 122         for(y=0; y<vec->length; y++){
 123                 for(x=0; x<vec->length; x++){
 124                         double d= vec->coeff[x] * vec->coeff[y];
 125
 126                         f->distCoeff[x + y*f->distStride]= (int)(d*(1<<10) + 0.5);
 127 //                      if(y==vec->length/2)
 128 //                              printf("%6d ", f->distCoeff[x + y*f->distStride]);
 129                 }
 130         }
 131         sws_freeVec(vec);
 132
 133         return 0;
 134 }
 135
 136 static int config(struct vf_instance_s* vf,
 137         int width, int height, int d_width, int d_height,
 138         unsigned int flags, unsigned int outfmt){
 139
 140         int sw, sh;
 141 //asm volatile("emms\n\t");
 142         allocStuff(&vf->priv->luma, width, height);
 143
 144         getSubSampleFactors(&sw, &sh, outfmt);
 145         allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
 146
 147         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 148 }
 149
 150 static void freeBuffers(FilterParam *f){
 151         if(f->preFilterContext) sws_freeContext(f->preFilterContext);
 152         f->preFilterContext=NULL;
 153
 154         if(f->preFilterBuf) free(f->preFilterBuf);
 155         f->preFilterBuf=NULL;
 156
 157         if(f->distCoeff) free(f->distCoeff);
 158         f->distCoeff=NULL;
 159 }
 160
 161 static void uninit(struct vf_instance_s* vf){
 162         if(!vf->priv) return;
 163
 164         freeBuffers(&vf->priv->luma);
 165         freeBuffers(&vf->priv->chroma);
 166
 167         free(vf->priv);
 168         vf->priv=NULL;
 169 }
 170
 171 static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
 172         int x, y;
 173         FilterParam f= *fp;
 174         const int radius= f.distWidth/2;
 175         uint8_t *srcArray[3]= {src, NULL, NULL};
 176         uint8_t *dstArray[3]= {f.preFilterBuf, NULL, NULL};
 177         int srcStrideArray[3]= {srcStride, 0, 0};
 178         int dstStrideArray[3]= {f.preFilterStride, 0, 0};
 179
 180 //      f.preFilterContext->swScale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 181         sws_scale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 182
 183         for(y=0; y<h; y++){
 184                 for(x=0; x<w; x++){
 185                         int sum=0;
 186                         int div=0;
 187                         int dy;
 188                         const int preVal= f.preFilterBuf[x + y*f.preFilterStride];
 189 #if 0
 190                         const int srcVal= src[x + y*srcStride];
 191 if((x/32)&1){
 192     dst[x + y*dstStride]= srcVal;
 193     if(y%32==0) dst[x + y*dstStride]= 0;
 194     continue;
 195 }
 196 #endif
 197                         if(x >= radius && x < w - radius){
 198                                 for(dy=0; dy<radius*2+1; dy++){
 199                                         int dx;
 200                                         int iy= y+dy - radius;
 201                                         if     (iy<0)  iy=  -iy;
 202                                         else if(iy>=h) iy= h-iy-1;
 203
 204                                         for(dx=0; dx<radius*2+1; dx++){
 205                                                 const int ix= x+dx - radius;
 206                                                 int factor;
 207
 208                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 209                                                         *f.distCoeff[dx + dy*f.distStride];
 210                                                 sum+= src[ix + iy*srcStride] *factor;
 211                                                 div+= factor;
 212                                         }
 213                                 }
 214                         }else{
 215                                 for(dy=0; dy<radius*2+1; dy++){
 216                                         int dx;
 217                                         int iy= y+dy - radius;
 218                                         if     (iy<0)  iy=  -iy;
 219                                         else if(iy>=h) iy= h-iy-1;
 220
 221                                         for(dx=0; dx<radius*2+1; dx++){
 222                                                 int ix= x+dx - radius;
 223                                                 int factor;
 224                                                 if     (ix<0)  ix=  -ix;
 225                                                 else if(ix>=w) ix= w-ix-1;
 226
 227                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 228                                                         *f.distCoeff[dx + dy*f.distStride];
 229                                                 sum+= src[ix + iy*srcStride] *factor;
 230                                                 div+= factor;
 231                                         }
 232                                 }
 233                         }
 234                         dst[x + y*dstStride]= (sum + div/2)/div;
 235                 }
 236         }
 237 }
 238
 239 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
 240         int cw= mpi->w >> mpi->chroma_x_shift;
 241         int ch= mpi->h >> mpi->chroma_y_shift;
 242
 243         mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
 244                 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 245                 mpi->w,mpi->h);
 246
 247         assert(mpi->flags&MP_IMGFLAG_PLANAR);
 248
 249         blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
 250         blur(dmpi->planes[1], mpi->planes[1], cw    , ch   , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
 251         blur(dmpi->planes[2], mpi->planes[2], cw    , ch   , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
 252
 253         return vf_next_put_image(vf,dmpi);
 254 }
 255
 256 //===========================================================================//
 257
 258 static int query_format(struct vf_instance_s* vf, unsigned int fmt){
 259         switch(fmt)
 260         {
 261         case IMGFMT_YV12:
 262         case IMGFMT_I420:
 263         case IMGFMT_IYUV:
 264         case IMGFMT_YVU9:
 265         case IMGFMT_444P:
 266         case IMGFMT_422P:
 267         case IMGFMT_411P:
 268                 return vf_next_query_format(vf, fmt);
 269         }
 270         return 0;
 271 }
 272
 273 static int open(vf_instance_t *vf, char* args){
 274         int e;
 275
 276         vf->config=config;
 277         vf->put_image=put_image;
 278 //      vf->get_image=get_image;
 279         vf->query_format=query_format;
 280         vf->uninit=uninit;
 281         vf->priv=malloc(sizeof(struct vf_priv_s));
 282         memset(vf->priv, 0, sizeof(struct vf_priv_s));
 283
 284         if(args==NULL) return 0;
 285
 286         e=sscanf(args, "%f:%f:%f:%f:%f:%f",
 287                 &vf->priv->luma.radius,
 288                 &vf->priv->luma.preFilterRadius,
 289                 &vf->priv->luma.strength,
 290                 &vf->priv->chroma.radius,
 291                 &vf->priv->chroma.preFilterRadius,
 292                 &vf->priv->chroma.strength
 293                 );
 294
 295         vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
 296
 297         if(e==3){
 298                 vf->priv->chroma.radius= vf->priv->luma.radius;
 299                 vf->priv->chroma.preFilterRadius = vf->priv->luma.preFilterRadius;
 300                 vf->priv->chroma.strength= vf->priv->luma.strength;
 301         }else if(e!=6)
 302                 return 0;
 303
 304 //      if(vf->priv->luma.radius < 0) return 0;
 305 //      if(vf->priv->chroma.radius < 0) return 0;
 306
 307         return 1;
 308 }
 309
 310 vf_info_t vf_info_sab = {
 311     "shape adaptive blur",
 312     "sab",
 313     "Michael Niedermayer",
 314     "",
 315     open,
 316     NULL
 317 };
 318
 319 //===========================================================================//