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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #ifdef USE_LIBAVUTIL_SO
  33 #include <ffmpeg/avutil.h>
  34 #else
  35 #include "avutil.h"
  36 #endif
  37 #include "img_format.h"
  38 #include "mp_image.h"
  39 #include "vf.h"
  40 #include "libswscale/swscale.h"
  41 #include "vf_scale.h"
  42
  43
  44 //===========================================================================//
  45
  46 typedef struct FilterParam{
  47         float radius;
  48         float preFilterRadius;
  49         float strength;
  50         float quality;
  51         struct SwsContext *preFilterContext;
  52         uint8_t *preFilterBuf;
  53         int preFilterStride;
  54         int distWidth;
  55         int distStride;
  56         int *distCoeff;
  57         int colorDiffCoeff[512];
  58 }FilterParam;
  59
  60 struct vf_priv_s {
  61         FilterParam luma;
  62         FilterParam chroma;
  63 };
  64
  65
  66 /***************************************************************************/
  67
  68 //FIXME stupid code duplication
  69 static void getSubSampleFactors(int *h, int *v, int format){
  70         switch(format){
  71         case IMGFMT_YV12:
  72         case IMGFMT_I420:
  73                 *h=1;
  74                 *v=1;
  75                 break;
  76         case IMGFMT_YVU9:
  77                 *h=2;
  78                 *v=2;
  79                 break;
  80         case IMGFMT_444P:
  81                 *h=0;
  82                 *v=0;
  83                 break;
  84         case IMGFMT_422P:
  85                 *h=1;
  86                 *v=0;
  87                 break;
  88         case IMGFMT_411P:
  89                 *h=2;
  90                 *v=0;
  91                 break;
  92         }
  93 }
  94
  95 static int allocStuff(FilterParam *f, int width, int height){
  96         int stride= (width+7)&~7;
  97         SwsVector *vec;
  98         SwsFilter swsF;
  99         int i,x,y;
 100         f->preFilterBuf= (uint8_t*)memalign(8, stride*height);
 101         f->preFilterStride= stride;
 102
 103         vec = sws_getGaussianVec(f->preFilterRadius, f->quality);
 104         swsF.lumH= swsF.lumV= vec;
 105         swsF.chrH= swsF.chrV= NULL;
 106         f->preFilterContext= sws_getContext(
 107                 width, height, PIX_FMT_GRAY8, width, height, PIX_FMT_GRAY8, get_sws_cpuflags(), &swsF, NULL, NULL);
 108
 109         sws_freeVec(vec);
 110         vec = sws_getGaussianVec(f->strength, 5.0);
 111         for(i=0; i<512; i++){
 112                 double d;
 113                 int index= i-256 + vec->length/2;
 114
 115                 if(index<0 || index>=vec->length)       d= 0.0;
 116                 else                                    d= vec->coeff[index];
 117
 118                 f->colorDiffCoeff[i]= (int)(d/vec->coeff[vec->length/2]*(1<<12) + 0.5);
 119         }
 120         sws_freeVec(vec);
 121         vec = sws_getGaussianVec(f->radius, f->quality);
 122         f->distWidth= vec->length;
 123         f->distStride= (vec->length+7)&~7;
 124         f->distCoeff= (int32_t*)memalign(8, f->distWidth*f->distStride*sizeof(int32_t));
 125
 126         for(y=0; y<vec->length; y++){
 127                 for(x=0; x<vec->length; x++){
 128                         double d= vec->coeff[x] * vec->coeff[y];
 129
 130                         f->distCoeff[x + y*f->distStride]= (int)(d*(1<<10) + 0.5);
 131 //                      if(y==vec->length/2)
 132 //                              printf("%6d ", f->distCoeff[x + y*f->distStride]);
 133                 }
 134         }
 135         sws_freeVec(vec);
 136
 137         return 0;
 138 }
 139
 140 static int config(struct vf_instance_s* vf,
 141         int width, int height, int d_width, int d_height,
 142         unsigned int flags, unsigned int outfmt){
 143
 144         int sw, sh;
 145 //asm volatile("emms\n\t");
 146         allocStuff(&vf->priv->luma, width, height);
 147
 148         getSubSampleFactors(&sw, &sh, outfmt);
 149         allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
 150
 151         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 152 }
 153
 154 static void freeBuffers(FilterParam *f){
 155         if(f->preFilterContext) sws_freeContext(f->preFilterContext);
 156         f->preFilterContext=NULL;
 157
 158         if(f->preFilterBuf) free(f->preFilterBuf);
 159         f->preFilterBuf=NULL;
 160
 161         if(f->distCoeff) free(f->distCoeff);
 162         f->distCoeff=NULL;
 163 }
 164
 165 static void uninit(struct vf_instance_s* vf){
 166         if(!vf->priv) return;
 167
 168         freeBuffers(&vf->priv->luma);
 169         freeBuffers(&vf->priv->chroma);
 170
 171         free(vf->priv);
 172         vf->priv=NULL;
 173 }
 174
 175 static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
 176         int x, y;
 177         FilterParam f= *fp;
 178         const int radius= f.distWidth/2;
 179         uint8_t *srcArray[3]= {src, NULL, NULL};
 180         uint8_t *dstArray[3]= {f.preFilterBuf, NULL, NULL};
 181         int srcStrideArray[3]= {srcStride, 0, 0};
 182         int dstStrideArray[3]= {f.preFilterStride, 0, 0};
 183
 184 //      f.preFilterContext->swScale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 185         sws_scale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
 186
 187         for(y=0; y<h; y++){
 188                 for(x=0; x<w; x++){
 189                         int sum=0;
 190                         int div=0;
 191                         int dy;
 192                         const int preVal= f.preFilterBuf[x + y*f.preFilterStride];
 193 #if 0
 194                         const int srcVal= src[x + y*srcStride];
 195 if((x/32)&1){
 196     dst[x + y*dstStride]= srcVal;
 197     if(y%32==0) dst[x + y*dstStride]= 0;
 198     continue;
 199 }
 200 #endif
 201                         if(x >= radius && x < w - radius){
 202                                 for(dy=0; dy<radius*2+1; dy++){
 203                                         int dx;
 204                                         int iy= y+dy - radius;
 205                                         if     (iy<0)  iy=  -iy;
 206                                         else if(iy>=h) iy= h-iy-1;
 207
 208                                         for(dx=0; dx<radius*2+1; dx++){
 209                                                 const int ix= x+dx - radius;
 210                                                 int factor;
 211
 212                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 213                                                         *f.distCoeff[dx + dy*f.distStride];
 214                                                 sum+= src[ix + iy*srcStride] *factor;
 215                                                 div+= factor;
 216                                         }
 217                                 }
 218                         }else{
 219                                 for(dy=0; dy<radius*2+1; dy++){
 220                                         int dx;
 221                                         int iy= y+dy - radius;
 222                                         if     (iy<0)  iy=  -iy;
 223                                         else if(iy>=h) iy= h-iy-1;
 224
 225                                         for(dx=0; dx<radius*2+1; dx++){
 226                                                 int ix= x+dx - radius;
 227                                                 int factor;
 228                                                 if     (ix<0)  ix=  -ix;
 229                                                 else if(ix>=w) ix= w-ix-1;
 230
 231                                                 factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
 232                                                         *f.distCoeff[dx + dy*f.distStride];
 233                                                 sum+= src[ix + iy*srcStride] *factor;
 234                                                 div+= factor;
 235                                         }
 236                                 }
 237                         }
 238                         dst[x + y*dstStride]= (sum + div/2)/div;
 239                 }
 240         }
 241 }
 242
 243 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
 244         int cw= mpi->w >> mpi->chroma_x_shift;
 245         int ch= mpi->h >> mpi->chroma_y_shift;
 246
 247         mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
 248                 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 249                 mpi->w,mpi->h);
 250
 251         assert(mpi->flags&MP_IMGFLAG_PLANAR);
 252
 253         blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
 254         blur(dmpi->planes[1], mpi->planes[1], cw    , ch   , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
 255         blur(dmpi->planes[2], mpi->planes[2], cw    , ch   , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
 256
 257         return vf_next_put_image(vf,dmpi, pts);
 258 }
 259
 260 //===========================================================================//
 261
 262 static int query_format(struct vf_instance_s* vf, unsigned int fmt){
 263         switch(fmt)
 264         {
 265         case IMGFMT_YV12:
 266         case IMGFMT_I420:
 267         case IMGFMT_IYUV:
 268         case IMGFMT_YVU9:
 269         case IMGFMT_444P:
 270         case IMGFMT_422P:
 271         case IMGFMT_411P:
 272                 return vf_next_query_format(vf, fmt);
 273         }
 274         return 0;
 275 }
 276
 277 static int open(vf_instance_t *vf, char* args){
 278         int e;
 279
 280         vf->config=config;
 281         vf->put_image=put_image;
 282 //      vf->get_image=get_image;
 283         vf->query_format=query_format;
 284         vf->uninit=uninit;
 285         vf->priv=malloc(sizeof(struct vf_priv_s));
 286         memset(vf->priv, 0, sizeof(struct vf_priv_s));
 287
 288         if(args==NULL) return 0;
 289
 290         e=sscanf(args, "%f:%f:%f:%f:%f:%f",
 291                 &vf->priv->luma.radius,
 292                 &vf->priv->luma.preFilterRadius,
 293                 &vf->priv->luma.strength,
 294                 &vf->priv->chroma.radius,
 295                 &vf->priv->chroma.preFilterRadius,
 296                 &vf->priv->chroma.strength
 297                 );
 298
 299         vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
 300
 301         if(e==3){
 302                 vf->priv->chroma.radius= vf->priv->luma.radius;
 303                 vf->priv->chroma.preFilterRadius = vf->priv->luma.preFilterRadius;
 304                 vf->priv->chroma.strength= vf->priv->luma.strength;
 305         }else if(e!=6)
 306                 return 0;
 307
 308 //      if(vf->priv->luma.radius < 0) return 0;
 309 //      if(vf->priv->chroma.radius < 0) return 0;
 310
 311         return 1;
 312 }
 313
 314 const vf_info_t vf_info_sab = {
 315     "shape adaptive blur",
 316     "sab",
 317     "Michael Niedermayer",
 318     "",
 319     open,
 320     NULL
 321 };
 322
 323 //===========================================================================//