ffmpeg / libavcodec / motion_est_template.c @ 849f1035
History | View | Annotate | Download (42.2 KB)
| 1 |
/*
|
|---|---|
| 2 |
* Motion estimation
|
| 3 |
* Copyright (c) 2002-2004 Michael Niedermayer
|
| 4 |
*
|
| 5 |
* This file is part of FFmpeg.
|
| 6 |
*
|
| 7 |
* FFmpeg is free software; you can redistribute it and/or
|
| 8 |
* modify it under the terms of the GNU Lesser General Public
|
| 9 |
* License as published by the Free Software Foundation; either
|
| 10 |
* version 2.1 of the License, or (at your option) any later version.
|
| 11 |
*
|
| 12 |
* FFmpeg is distributed in the hope that it will be useful,
|
| 13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| 15 |
* Lesser General Public License for more details.
|
| 16 |
*
|
| 17 |
* You should have received a copy of the GNU Lesser General Public
|
| 18 |
* License along with FFmpeg; if not, write to the Free Software
|
| 19 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
| 20 |
*
|
| 21 |
*/
|
| 22 |
|
| 23 |
/**
|
| 24 |
* @file motion_est_template.c
|
| 25 |
* Motion estimation template.
|
| 26 |
*/
|
| 27 |
|
| 28 |
//lets hope gcc will remove the unused vars ...(gcc 3.2.2 seems to do it ...)
|
| 29 |
#define LOAD_COMMON\
|
| 30 |
uint32_t attribute_unused * const score_map= c->score_map;\
|
| 31 |
const int attribute_unused xmin= c->xmin;\ |
| 32 |
const int attribute_unused ymin= c->ymin;\ |
| 33 |
const int attribute_unused xmax= c->xmax;\ |
| 34 |
const int attribute_unused ymax= c->ymax;\ |
| 35 |
uint8_t *mv_penalty= c->current_mv_penalty;\ |
| 36 |
const int pred_x= c->pred_x;\ |
| 37 |
const int pred_y= c->pred_y;\ |
| 38 |
|
| 39 |
#define CHECK_HALF_MV(dx, dy, x, y)\
|
| 40 |
{\
|
| 41 |
const int hx= 2*(x)+(dx);\ |
| 42 |
const int hy= 2*(y)+(dy);\ |
| 43 |
d= cmp(s, x, y, dx, dy, size, h, ref_index, src_index, cmp_sub, chroma_cmp_sub, flags);\ |
| 44 |
d += (mv_penalty[hx - pred_x] + mv_penalty[hy - pred_y])*penalty_factor;\ |
| 45 |
COPY3_IF_LT(dmin, d, bx, hx, by, hy)\ |
| 46 |
} |
| 47 |
|
| 48 |
#if 0
|
| 49 |
static int hpel_motion_search)(MpegEncContext * s,
|
| 50 |
int *mx_ptr, int *my_ptr, int dmin,
|
| 51 |
uint8_t *ref_data[3],
|
| 52 |
int size)
|
| 53 |
{
|
| 54 |
const int xx = 16 * s->mb_x + 8*(n&1);
|
| 55 |
const int yy = 16 * s->mb_y + 8*(n>>1);
|
| 56 |
const int mx = *mx_ptr;
|
| 57 |
const int my = *my_ptr;
|
| 58 |
const int penalty_factor= c->sub_penalty_factor;
|
| 59 |
|
| 60 |
LOAD_COMMON
|
| 61 |
|
| 62 |
// INIT;
|
| 63 |
//FIXME factorize
|
| 64 |
me_cmp_func cmp, chroma_cmp, cmp_sub, chroma_cmp_sub;
|
| 65 |
|
| 66 |
if(s->no_rounding /*FIXME b_type*/){
|
| 67 |
hpel_put= &s->dsp.put_no_rnd_pixels_tab[size];
|
| 68 |
chroma_hpel_put= &s->dsp.put_no_rnd_pixels_tab[size+1];
|
| 69 |
}else{
|
| 70 |
hpel_put=& s->dsp.put_pixels_tab[size];
|
| 71 |
chroma_hpel_put= &s->dsp.put_pixels_tab[size+1];
|
| 72 |
}
|
| 73 |
cmpf= s->dsp.me_cmp[size];
|
| 74 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 75 |
cmp_sub= s->dsp.me_sub_cmp[size];
|
| 76 |
chroma_cmp_sub= s->dsp.me_sub_cmp[size+1];
|
| 77 |
|
| 78 |
if(c->skip){ //FIXME somehow move up (benchmark)
|
| 79 |
*mx_ptr = 0;
|
| 80 |
*my_ptr = 0;
|
| 81 |
return dmin;
|
| 82 |
}
|
| 83 |
|
| 84 |
if(c->avctx->me_cmp != c->avctx->me_sub_cmp){
|
| 85 |
CMP_HPEL(dmin, 0, 0, mx, my, size);
|
| 86 |
if(mx || my)
|
| 87 |
dmin += (mv_penalty[2*mx - pred_x] + mv_penalty[2*my - pred_y])*penalty_factor;
|
| 88 |
}
|
| 89 |
|
| 90 |
if (mx > xmin && mx < xmax &&
|
| 91 |
my > ymin && my < ymax) {
|
| 92 |
int bx=2*mx, by=2*my;
|
| 93 |
int d= dmin;
|
| 94 |
|
| 95 |
CHECK_HALF_MV(1, 1, mx-1, my-1)
|
| 96 |
CHECK_HALF_MV(0, 1, mx , my-1)
|
| 97 |
CHECK_HALF_MV(1, 1, mx , my-1)
|
| 98 |
CHECK_HALF_MV(1, 0, mx-1, my )
|
| 99 |
CHECK_HALF_MV(1, 0, mx , my )
|
| 100 |
CHECK_HALF_MV(1, 1, mx-1, my )
|
| 101 |
CHECK_HALF_MV(0, 1, mx , my )
|
| 102 |
CHECK_HALF_MV(1, 1, mx , my )
|
| 103 |
|
| 104 |
assert(bx >= xmin*2 || bx <= xmax*2 || by >= ymin*2 || by <= ymax*2);
|
| 105 |
|
| 106 |
*mx_ptr = bx;
|
| 107 |
*my_ptr = by;
|
| 108 |
}else{
|
| 109 |
*mx_ptr =2*mx;
|
| 110 |
*my_ptr =2*my;
|
| 111 |
}
|
| 112 |
|
| 113 |
return dmin;
|
| 114 |
}
|
| 115 |
|
| 116 |
#else
|
| 117 |
static int hpel_motion_search(MpegEncContext * s, |
| 118 |
int *mx_ptr, int *my_ptr, int dmin, |
| 119 |
int src_index, int ref_index, |
| 120 |
int size, int h) |
| 121 |
{
|
| 122 |
MotionEstContext * const c= &s->me;
|
| 123 |
const int mx = *mx_ptr; |
| 124 |
const int my = *my_ptr; |
| 125 |
const int penalty_factor= c->sub_penalty_factor; |
| 126 |
me_cmp_func cmp_sub, chroma_cmp_sub; |
| 127 |
int bx=2*mx, by=2*my; |
| 128 |
|
| 129 |
LOAD_COMMON |
| 130 |
int flags= c->sub_flags;
|
| 131 |
|
| 132 |
//FIXME factorize
|
| 133 |
|
| 134 |
cmp_sub= s->dsp.me_sub_cmp[size]; |
| 135 |
chroma_cmp_sub= s->dsp.me_sub_cmp[size+1];
|
| 136 |
|
| 137 |
if(c->skip){ //FIXME move out of hpel? |
| 138 |
*mx_ptr = 0;
|
| 139 |
*my_ptr = 0;
|
| 140 |
return dmin;
|
| 141 |
} |
| 142 |
|
| 143 |
if(c->avctx->me_cmp != c->avctx->me_sub_cmp){
|
| 144 |
dmin= cmp(s, mx, my, 0, 0, size, h, ref_index, src_index, cmp_sub, chroma_cmp_sub, flags); |
| 145 |
if(mx || my || size>0) |
| 146 |
dmin += (mv_penalty[2*mx - pred_x] + mv_penalty[2*my - pred_y])*penalty_factor; |
| 147 |
} |
| 148 |
|
| 149 |
if (mx > xmin && mx < xmax &&
|
| 150 |
my > ymin && my < ymax) {
|
| 151 |
int d= dmin;
|
| 152 |
const int index= (my<<ME_MAP_SHIFT) + mx; |
| 153 |
const int t= score_map[(index-(1<<ME_MAP_SHIFT))&(ME_MAP_SIZE-1)] |
| 154 |
+ (mv_penalty[bx - pred_x] + mv_penalty[by-2 - pred_y])*c->penalty_factor;
|
| 155 |
const int l= score_map[(index- 1 )&(ME_MAP_SIZE-1)] |
| 156 |
+ (mv_penalty[bx-2 - pred_x] + mv_penalty[by - pred_y])*c->penalty_factor;
|
| 157 |
const int r= score_map[(index+ 1 )&(ME_MAP_SIZE-1)] |
| 158 |
+ (mv_penalty[bx+2 - pred_x] + mv_penalty[by - pred_y])*c->penalty_factor;
|
| 159 |
const int b= score_map[(index+(1<<ME_MAP_SHIFT))&(ME_MAP_SIZE-1)] |
| 160 |
+ (mv_penalty[bx - pred_x] + mv_penalty[by+2 - pred_y])*c->penalty_factor;
|
| 161 |
|
| 162 |
#if 1 |
| 163 |
int key;
|
| 164 |
int map_generation= c->map_generation;
|
| 165 |
#ifndef NDEBUG
|
| 166 |
uint32_t *map= c->map; |
| 167 |
#endif
|
| 168 |
key= ((my-1)<<ME_MAP_MV_BITS) + (mx) + map_generation;
|
| 169 |
assert(map[(index-(1<<ME_MAP_SHIFT))&(ME_MAP_SIZE-1)] == key); |
| 170 |
key= ((my+1)<<ME_MAP_MV_BITS) + (mx) + map_generation;
|
| 171 |
assert(map[(index+(1<<ME_MAP_SHIFT))&(ME_MAP_SIZE-1)] == key); |
| 172 |
key= ((my)<<ME_MAP_MV_BITS) + (mx+1) + map_generation;
|
| 173 |
assert(map[(index+1)&(ME_MAP_SIZE-1)] == key); |
| 174 |
key= ((my)<<ME_MAP_MV_BITS) + (mx-1) + map_generation;
|
| 175 |
assert(map[(index-1)&(ME_MAP_SIZE-1)] == key); |
| 176 |
#endif
|
| 177 |
if(t<=b){
|
| 178 |
CHECK_HALF_MV(0, 1, mx ,my-1) |
| 179 |
if(l<=r){
|
| 180 |
CHECK_HALF_MV(1, 1, mx-1, my-1) |
| 181 |
if(t+r<=b+l){
|
| 182 |
CHECK_HALF_MV(1, 1, mx , my-1) |
| 183 |
}else{
|
| 184 |
CHECK_HALF_MV(1, 1, mx-1, my ) |
| 185 |
} |
| 186 |
CHECK_HALF_MV(1, 0, mx-1, my ) |
| 187 |
}else{
|
| 188 |
CHECK_HALF_MV(1, 1, mx , my-1) |
| 189 |
if(t+l<=b+r){
|
| 190 |
CHECK_HALF_MV(1, 1, mx-1, my-1) |
| 191 |
}else{
|
| 192 |
CHECK_HALF_MV(1, 1, mx , my ) |
| 193 |
} |
| 194 |
CHECK_HALF_MV(1, 0, mx , my ) |
| 195 |
} |
| 196 |
}else{
|
| 197 |
if(l<=r){
|
| 198 |
if(t+l<=b+r){
|
| 199 |
CHECK_HALF_MV(1, 1, mx-1, my-1) |
| 200 |
}else{
|
| 201 |
CHECK_HALF_MV(1, 1, mx , my ) |
| 202 |
} |
| 203 |
CHECK_HALF_MV(1, 0, mx-1, my) |
| 204 |
CHECK_HALF_MV(1, 1, mx-1, my) |
| 205 |
}else{
|
| 206 |
if(t+r<=b+l){
|
| 207 |
CHECK_HALF_MV(1, 1, mx , my-1) |
| 208 |
}else{
|
| 209 |
CHECK_HALF_MV(1, 1, mx-1, my) |
| 210 |
} |
| 211 |
CHECK_HALF_MV(1, 0, mx , my) |
| 212 |
CHECK_HALF_MV(1, 1, mx , my) |
| 213 |
} |
| 214 |
CHECK_HALF_MV(0, 1, mx , my) |
| 215 |
} |
| 216 |
assert(bx >= xmin*2 && bx <= xmax*2 && by >= ymin*2 && by <= ymax*2); |
| 217 |
} |
| 218 |
|
| 219 |
*mx_ptr = bx; |
| 220 |
*my_ptr = by; |
| 221 |
|
| 222 |
return dmin;
|
| 223 |
} |
| 224 |
#endif
|
| 225 |
|
| 226 |
static int no_sub_motion_search(MpegEncContext * s, |
| 227 |
int *mx_ptr, int *my_ptr, int dmin, |
| 228 |
int src_index, int ref_index, |
| 229 |
int size, int h) |
| 230 |
{
|
| 231 |
(*mx_ptr)<<=1;
|
| 232 |
(*my_ptr)<<=1;
|
| 233 |
return dmin;
|
| 234 |
} |
| 235 |
|
| 236 |
inline int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, |
| 237 |
int ref_index, int size, int h, int add_rate) |
| 238 |
{
|
| 239 |
// const int check_luma= s->dsp.me_sub_cmp != s->dsp.mb_cmp;
|
| 240 |
MotionEstContext * const c= &s->me;
|
| 241 |
const int penalty_factor= c->mb_penalty_factor; |
| 242 |
const int flags= c->mb_flags; |
| 243 |
const int qpel= flags & FLAG_QPEL; |
| 244 |
const int mask= 1+2*qpel; |
| 245 |
me_cmp_func cmp_sub, chroma_cmp_sub; |
| 246 |
int d;
|
| 247 |
|
| 248 |
LOAD_COMMON |
| 249 |
|
| 250 |
//FIXME factorize
|
| 251 |
|
| 252 |
cmp_sub= s->dsp.mb_cmp[size]; |
| 253 |
chroma_cmp_sub= s->dsp.mb_cmp[size+1];
|
| 254 |
|
| 255 |
// assert(!c->skip);
|
| 256 |
// assert(c->avctx->me_sub_cmp != c->avctx->mb_cmp);
|
| 257 |
|
| 258 |
d= cmp(s, mx>>(qpel+1), my>>(qpel+1), mx&mask, my&mask, size, h, ref_index, src_index, cmp_sub, chroma_cmp_sub, flags); |
| 259 |
//FIXME check cbp before adding penalty for (0,0) vector
|
| 260 |
if(add_rate && (mx || my || size>0)) |
| 261 |
d += (mv_penalty[mx - pred_x] + mv_penalty[my - pred_y])*penalty_factor; |
| 262 |
|
| 263 |
return d;
|
| 264 |
} |
| 265 |
|
| 266 |
#define CHECK_QUARTER_MV(dx, dy, x, y)\
|
| 267 |
{\
|
| 268 |
const int hx= 4*(x)+(dx);\ |
| 269 |
const int hy= 4*(y)+(dy);\ |
| 270 |
d= cmp(s, x, y, dx, dy, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\ |
| 271 |
d += (mv_penalty[hx - pred_x] + mv_penalty[hy - pred_y])*penalty_factor;\ |
| 272 |
COPY3_IF_LT(dmin, d, bx, hx, by, hy)\ |
| 273 |
} |
| 274 |
|
| 275 |
static int qpel_motion_search(MpegEncContext * s, |
| 276 |
int *mx_ptr, int *my_ptr, int dmin, |
| 277 |
int src_index, int ref_index, |
| 278 |
int size, int h) |
| 279 |
{
|
| 280 |
MotionEstContext * const c= &s->me;
|
| 281 |
const int mx = *mx_ptr; |
| 282 |
const int my = *my_ptr; |
| 283 |
const int penalty_factor= c->sub_penalty_factor; |
| 284 |
const int map_generation= c->map_generation; |
| 285 |
const int subpel_quality= c->avctx->me_subpel_quality; |
| 286 |
uint32_t *map= c->map; |
| 287 |
me_cmp_func cmpf, chroma_cmpf; |
| 288 |
me_cmp_func cmp_sub, chroma_cmp_sub; |
| 289 |
|
| 290 |
LOAD_COMMON |
| 291 |
int flags= c->sub_flags;
|
| 292 |
|
| 293 |
cmpf= s->dsp.me_cmp[size]; |
| 294 |
chroma_cmpf= s->dsp.me_cmp[size+1]; //factorize FIXME |
| 295 |
//FIXME factorize
|
| 296 |
|
| 297 |
cmp_sub= s->dsp.me_sub_cmp[size]; |
| 298 |
chroma_cmp_sub= s->dsp.me_sub_cmp[size+1];
|
| 299 |
|
| 300 |
if(c->skip){ //FIXME somehow move up (benchmark) |
| 301 |
*mx_ptr = 0;
|
| 302 |
*my_ptr = 0;
|
| 303 |
return dmin;
|
| 304 |
} |
| 305 |
|
| 306 |
if(c->avctx->me_cmp != c->avctx->me_sub_cmp){
|
| 307 |
dmin= cmp(s, mx, my, 0, 0, size, h, ref_index, src_index, cmp_sub, chroma_cmp_sub, flags); |
| 308 |
if(mx || my || size>0) |
| 309 |
dmin += (mv_penalty[4*mx - pred_x] + mv_penalty[4*my - pred_y])*penalty_factor; |
| 310 |
} |
| 311 |
|
| 312 |
if (mx > xmin && mx < xmax &&
|
| 313 |
my > ymin && my < ymax) {
|
| 314 |
int bx=4*mx, by=4*my; |
| 315 |
int d= dmin;
|
| 316 |
int i, nx, ny;
|
| 317 |
const int index= (my<<ME_MAP_SHIFT) + mx; |
| 318 |
const int t= score_map[(index-(1<<ME_MAP_SHIFT) )&(ME_MAP_SIZE-1)]; |
| 319 |
const int l= score_map[(index- 1 )&(ME_MAP_SIZE-1)]; |
| 320 |
const int r= score_map[(index+ 1 )&(ME_MAP_SIZE-1)]; |
| 321 |
const int b= score_map[(index+(1<<ME_MAP_SHIFT) )&(ME_MAP_SIZE-1)]; |
| 322 |
const int c= score_map[(index )&(ME_MAP_SIZE-1)]; |
| 323 |
int best[8]; |
| 324 |
int best_pos[8][2]; |
| 325 |
|
| 326 |
memset(best, 64, sizeof(int)*8); |
| 327 |
#if 1 |
| 328 |
if(s->me.dia_size>=2){ |
| 329 |
const int tl= score_map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)]; |
| 330 |
const int bl= score_map[(index+(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)]; |
| 331 |
const int tr= score_map[(index-(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)]; |
| 332 |
const int br= score_map[(index+(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)]; |
| 333 |
|
| 334 |
for(ny= -3; ny <= 3; ny++){ |
| 335 |
for(nx= -3; nx <= 3; nx++){ |
| 336 |
//FIXME this could overflow (unlikely though)
|
| 337 |
const int64_t t2= nx*nx*(tr + tl - 2*t) + 4*nx*(tr-tl) + 32*t; |
| 338 |
const int64_t c2= nx*nx*( r + l - 2*c) + 4*nx*( r- l) + 32*c; |
| 339 |
const int64_t b2= nx*nx*(br + bl - 2*b) + 4*nx*(br-bl) + 32*b; |
| 340 |
int score= (ny*ny*(b2 + t2 - 2*c2) + 4*ny*(b2 - t2) + 32*c2 + 512)>>10; |
| 341 |
int i;
|
| 342 |
|
| 343 |
if((nx&3)==0 && (ny&3)==0) continue; |
| 344 |
|
| 345 |
score += (mv_penalty[4*mx + nx - pred_x] + mv_penalty[4*my + ny - pred_y])*penalty_factor; |
| 346 |
|
| 347 |
// if(nx&1) score-=1024*c->penalty_factor;
|
| 348 |
// if(ny&1) score-=1024*c->penalty_factor;
|
| 349 |
|
| 350 |
for(i=0; i<8; i++){ |
| 351 |
if(score < best[i]){
|
| 352 |
memmove(&best[i+1], &best[i], sizeof(int)*(7-i)); |
| 353 |
memmove(&best_pos[i+1][0], &best_pos[i][0], sizeof(int)*2*(7-i)); |
| 354 |
best[i]= score; |
| 355 |
best_pos[i][0]= nx + 4*mx; |
| 356 |
best_pos[i][1]= ny + 4*my; |
| 357 |
break;
|
| 358 |
} |
| 359 |
} |
| 360 |
} |
| 361 |
} |
| 362 |
}else{
|
| 363 |
int tl;
|
| 364 |
//FIXME this could overflow (unlikely though)
|
| 365 |
const int cx = 4*(r - l); |
| 366 |
const int cx2= r + l - 2*c; |
| 367 |
const int cy = 4*(b - t); |
| 368 |
const int cy2= b + t - 2*c; |
| 369 |
int cxy;
|
| 370 |
|
| 371 |
if(map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)] == (my<<ME_MAP_MV_BITS) + mx + map_generation && 0){ //FIXME |
| 372 |
tl= score_map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)]; |
| 373 |
}else{
|
| 374 |
tl= cmp(s, mx-1, my-1, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);//FIXME wrong if chroma me is different |
| 375 |
} |
| 376 |
|
| 377 |
cxy= 2*tl + (cx + cy)/4 - (cx2 + cy2) - 2*c; |
| 378 |
|
| 379 |
assert(16*cx2 + 4*cx + 32*c == 32*r); |
| 380 |
assert(16*cx2 - 4*cx + 32*c == 32*l); |
| 381 |
assert(16*cy2 + 4*cy + 32*c == 32*b); |
| 382 |
assert(16*cy2 - 4*cy + 32*c == 32*t); |
| 383 |
assert(16*cxy + 16*cy2 + 16*cx2 - 4*cy - 4*cx + 32*c == 32*tl); |
| 384 |
|
| 385 |
for(ny= -3; ny <= 3; ny++){ |
| 386 |
for(nx= -3; nx <= 3; nx++){ |
| 387 |
//FIXME this could overflow (unlikely though)
|
| 388 |
int score= ny*nx*cxy + nx*nx*cx2 + ny*ny*cy2 + nx*cx + ny*cy + 32*c; //FIXME factor |
| 389 |
int i;
|
| 390 |
|
| 391 |
if((nx&3)==0 && (ny&3)==0) continue; |
| 392 |
|
| 393 |
score += 32*(mv_penalty[4*mx + nx - pred_x] + mv_penalty[4*my + ny - pred_y])*penalty_factor; |
| 394 |
// if(nx&1) score-=32*c->penalty_factor;
|
| 395 |
// if(ny&1) score-=32*c->penalty_factor;
|
| 396 |
|
| 397 |
for(i=0; i<8; i++){ |
| 398 |
if(score < best[i]){
|
| 399 |
memmove(&best[i+1], &best[i], sizeof(int)*(7-i)); |
| 400 |
memmove(&best_pos[i+1][0], &best_pos[i][0], sizeof(int)*2*(7-i)); |
| 401 |
best[i]= score; |
| 402 |
best_pos[i][0]= nx + 4*mx; |
| 403 |
best_pos[i][1]= ny + 4*my; |
| 404 |
break;
|
| 405 |
} |
| 406 |
} |
| 407 |
} |
| 408 |
} |
| 409 |
} |
| 410 |
for(i=0; i<subpel_quality; i++){ |
| 411 |
nx= best_pos[i][0];
|
| 412 |
ny= best_pos[i][1];
|
| 413 |
CHECK_QUARTER_MV(nx&3, ny&3, nx>>2, ny>>2) |
| 414 |
} |
| 415 |
|
| 416 |
#if 0
|
| 417 |
const int tl= score_map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)];
|
| 418 |
const int bl= score_map[(index+(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)];
|
| 419 |
const int tr= score_map[(index-(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)];
|
| 420 |
const int br= score_map[(index+(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)];
|
| 421 |
// if(l < r && l < t && l < b && l < tl && l < bl && l < tr && l < br && bl < tl){
|
| 422 |
if(tl<br){
|
| 423 |
|
| 424 |
// nx= FFMAX(4*mx - bx, bx - 4*mx);
|
| 425 |
// ny= FFMAX(4*my - by, by - 4*my);
|
| 426 |
|
| 427 |
static int stats[7][7], count;
|
| 428 |
count++;
|
| 429 |
stats[4*mx - bx + 3][4*my - by + 3]++;
|
| 430 |
if(256*256*256*64 % count ==0){
|
| 431 |
for(i=0; i<49; i++){
|
| 432 |
if((i%7)==0) printf("\n");
|
| 433 |
printf("%6d ", stats[0][i]);
|
| 434 |
}
|
| 435 |
printf("\n");
|
| 436 |
}
|
| 437 |
}
|
| 438 |
#endif
|
| 439 |
#else
|
| 440 |
|
| 441 |
CHECK_QUARTER_MV(2, 2, mx-1, my-1) |
| 442 |
CHECK_QUARTER_MV(0, 2, mx , my-1) |
| 443 |
CHECK_QUARTER_MV(2, 2, mx , my-1) |
| 444 |
CHECK_QUARTER_MV(2, 0, mx , my ) |
| 445 |
CHECK_QUARTER_MV(2, 2, mx , my ) |
| 446 |
CHECK_QUARTER_MV(0, 2, mx , my ) |
| 447 |
CHECK_QUARTER_MV(2, 2, mx-1, my ) |
| 448 |
CHECK_QUARTER_MV(2, 0, mx-1, my ) |
| 449 |
|
| 450 |
nx= bx; |
| 451 |
ny= by; |
| 452 |
|
| 453 |
for(i=0; i<8; i++){ |
| 454 |
int ox[8]= {0, 1, 1, 1, 0,-1,-1,-1}; |
| 455 |
int oy[8]= {1, 1, 0,-1,-1,-1, 0, 1}; |
| 456 |
CHECK_QUARTER_MV((nx + ox[i])&3, (ny + oy[i])&3, (nx + ox[i])>>2, (ny + oy[i])>>2) |
| 457 |
} |
| 458 |
#endif
|
| 459 |
#if 0
|
| 460 |
//outer ring
|
| 461 |
CHECK_QUARTER_MV(1, 3, mx-1, my-1)
|
| 462 |
CHECK_QUARTER_MV(1, 2, mx-1, my-1)
|
| 463 |
CHECK_QUARTER_MV(1, 1, mx-1, my-1)
|
| 464 |
CHECK_QUARTER_MV(2, 1, mx-1, my-1)
|
| 465 |
CHECK_QUARTER_MV(3, 1, mx-1, my-1)
|
| 466 |
CHECK_QUARTER_MV(0, 1, mx , my-1)
|
| 467 |
CHECK_QUARTER_MV(1, 1, mx , my-1)
|
| 468 |
CHECK_QUARTER_MV(2, 1, mx , my-1)
|
| 469 |
CHECK_QUARTER_MV(3, 1, mx , my-1)
|
| 470 |
CHECK_QUARTER_MV(3, 2, mx , my-1)
|
| 471 |
CHECK_QUARTER_MV(3, 3, mx , my-1)
|
| 472 |
CHECK_QUARTER_MV(3, 0, mx , my )
|
| 473 |
CHECK_QUARTER_MV(3, 1, mx , my )
|
| 474 |
CHECK_QUARTER_MV(3, 2, mx , my )
|
| 475 |
CHECK_QUARTER_MV(3, 3, mx , my )
|
| 476 |
CHECK_QUARTER_MV(2, 3, mx , my )
|
| 477 |
CHECK_QUARTER_MV(1, 3, mx , my )
|
| 478 |
CHECK_QUARTER_MV(0, 3, mx , my )
|
| 479 |
CHECK_QUARTER_MV(3, 3, mx-1, my )
|
| 480 |
CHECK_QUARTER_MV(2, 3, mx-1, my )
|
| 481 |
CHECK_QUARTER_MV(1, 3, mx-1, my )
|
| 482 |
CHECK_QUARTER_MV(1, 2, mx-1, my )
|
| 483 |
CHECK_QUARTER_MV(1, 1, mx-1, my )
|
| 484 |
CHECK_QUARTER_MV(1, 0, mx-1, my )
|
| 485 |
#endif
|
| 486 |
assert(bx >= xmin*4 && bx <= xmax*4 && by >= ymin*4 && by <= ymax*4); |
| 487 |
|
| 488 |
*mx_ptr = bx; |
| 489 |
*my_ptr = by; |
| 490 |
}else{
|
| 491 |
*mx_ptr =4*mx;
|
| 492 |
*my_ptr =4*my;
|
| 493 |
} |
| 494 |
|
| 495 |
return dmin;
|
| 496 |
} |
| 497 |
|
| 498 |
|
| 499 |
#define CHECK_MV(x,y)\
|
| 500 |
{\
|
| 501 |
const int key= ((y)<<ME_MAP_MV_BITS) + (x) + map_generation;\ |
| 502 |
const int index= (((y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\ |
| 503 |
assert((x) >= xmin);\ |
| 504 |
assert((x) <= xmax);\ |
| 505 |
assert((y) >= ymin);\ |
| 506 |
assert((y) <= ymax);\ |
| 507 |
/*printf("check_mv %d %d\n", x, y);*/\
|
| 508 |
if(map[index]!=key){\
|
| 509 |
d= cmp(s, x, y, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\ |
| 510 |
map[index]= key;\ |
| 511 |
score_map[index]= d;\ |
| 512 |
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*penalty_factor;\ |
| 513 |
/*printf("score:%d\n", d);*/\
|
| 514 |
COPY3_IF_LT(dmin, d, best[0], x, best[1], y)\ |
| 515 |
}\ |
| 516 |
} |
| 517 |
|
| 518 |
#define CHECK_CLIPPED_MV(ax,ay)\
|
| 519 |
{\
|
| 520 |
const int Lx= ax;\ |
| 521 |
const int Ly= ay;\ |
| 522 |
const int Lx2= FFMAX(xmin, FFMIN(Lx, xmax));\ |
| 523 |
const int Ly2= FFMAX(ymin, FFMIN(Ly, ymax));\ |
| 524 |
CHECK_MV(Lx2, Ly2)\ |
| 525 |
} |
| 526 |
|
| 527 |
#define CHECK_MV_DIR(x,y,new_dir)\
|
| 528 |
{\
|
| 529 |
const int key= ((y)<<ME_MAP_MV_BITS) + (x) + map_generation;\ |
| 530 |
const int index= (((y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\ |
| 531 |
/*printf("check_mv_dir %d %d %d\n", x, y, new_dir);*/\
|
| 532 |
if(map[index]!=key){\
|
| 533 |
d= cmp(s, x, y, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\ |
| 534 |
map[index]= key;\ |
| 535 |
score_map[index]= d;\ |
| 536 |
d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*penalty_factor;\ |
| 537 |
/*printf("score:%d\n", d);*/\
|
| 538 |
if(d<dmin){\
|
| 539 |
best[0]=x;\
|
| 540 |
best[1]=y;\
|
| 541 |
dmin=d;\ |
| 542 |
next_dir= new_dir;\ |
| 543 |
}\ |
| 544 |
}\ |
| 545 |
} |
| 546 |
|
| 547 |
#define check(x,y,S,v)\
|
| 548 |
if( (x)<(xmin<<(S)) ) printf("%d %d %d %d %d xmin" #v, xmin, (x), (y), s->mb_x, s->mb_y);\ |
| 549 |
if( (x)>(xmax<<(S)) ) printf("%d %d %d %d %d xmax" #v, xmax, (x), (y), s->mb_x, s->mb_y);\ |
| 550 |
if( (y)<(ymin<<(S)) ) printf("%d %d %d %d %d ymin" #v, ymin, (x), (y), s->mb_x, s->mb_y);\ |
| 551 |
if( (y)>(ymax<<(S)) ) printf("%d %d %d %d %d ymax" #v, ymax, (x), (y), s->mb_x, s->mb_y);\ |
| 552 |
|
| 553 |
#define LOAD_COMMON2\
|
| 554 |
uint32_t *map= c->map;\ |
| 555 |
const int qpel= flags&FLAG_QPEL;\ |
| 556 |
const int shift= 1+qpel;\ |
| 557 |
|
| 558 |
static av_always_inline int small_diamond_search(MpegEncContext * s, int *best, int dmin, |
| 559 |
int src_index, int ref_index, int const penalty_factor, |
| 560 |
int size, int h, int flags) |
| 561 |
{
|
| 562 |
MotionEstContext * const c= &s->me;
|
| 563 |
me_cmp_func cmpf, chroma_cmpf; |
| 564 |
int next_dir=-1; |
| 565 |
LOAD_COMMON |
| 566 |
LOAD_COMMON2 |
| 567 |
int map_generation= c->map_generation;
|
| 568 |
|
| 569 |
cmpf= s->dsp.me_cmp[size]; |
| 570 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 571 |
|
| 572 |
{ /* ensure that the best point is in the MAP as h/qpel refinement needs it */
|
| 573 |
const int key= (best[1]<<ME_MAP_MV_BITS) + best[0] + map_generation; |
| 574 |
const int index= ((best[1]<<ME_MAP_SHIFT) + best[0])&(ME_MAP_SIZE-1); |
| 575 |
if(map[index]!=key){ //this will be executed only very rarey |
| 576 |
score_map[index]= cmp(s, best[0], best[1], 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags); |
| 577 |
map[index]= key; |
| 578 |
} |
| 579 |
} |
| 580 |
|
| 581 |
for(;;){
|
| 582 |
int d;
|
| 583 |
const int dir= next_dir; |
| 584 |
const int x= best[0]; |
| 585 |
const int y= best[1]; |
| 586 |
next_dir=-1;
|
| 587 |
|
| 588 |
//printf("%d", dir);
|
| 589 |
if(dir!=2 && x>xmin) CHECK_MV_DIR(x-1, y , 0) |
| 590 |
if(dir!=3 && y>ymin) CHECK_MV_DIR(x , y-1, 1) |
| 591 |
if(dir!=0 && x<xmax) CHECK_MV_DIR(x+1, y , 2) |
| 592 |
if(dir!=1 && y<ymax) CHECK_MV_DIR(x , y+1, 3) |
| 593 |
|
| 594 |
if(next_dir==-1){ |
| 595 |
return dmin;
|
| 596 |
} |
| 597 |
} |
| 598 |
} |
| 599 |
|
| 600 |
static int funny_diamond_search(MpegEncContext * s, int *best, int dmin, |
| 601 |
int src_index, int ref_index, int const penalty_factor, |
| 602 |
int size, int h, int flags) |
| 603 |
{
|
| 604 |
MotionEstContext * const c= &s->me;
|
| 605 |
me_cmp_func cmpf, chroma_cmpf; |
| 606 |
int dia_size;
|
| 607 |
LOAD_COMMON |
| 608 |
LOAD_COMMON2 |
| 609 |
int map_generation= c->map_generation;
|
| 610 |
|
| 611 |
cmpf= s->dsp.me_cmp[size]; |
| 612 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 613 |
|
| 614 |
for(dia_size=1; dia_size<=4; dia_size++){ |
| 615 |
int dir;
|
| 616 |
const int x= best[0]; |
| 617 |
const int y= best[1]; |
| 618 |
|
| 619 |
if(dia_size&(dia_size-1)) continue; |
| 620 |
|
| 621 |
if( x + dia_size > xmax
|
| 622 |
|| x - dia_size < xmin |
| 623 |
|| y + dia_size > ymax |
| 624 |
|| y - dia_size < ymin) |
| 625 |
continue;
|
| 626 |
|
| 627 |
for(dir= 0; dir<dia_size; dir+=2){ |
| 628 |
int d;
|
| 629 |
|
| 630 |
CHECK_MV(x + dir , y + dia_size - dir); |
| 631 |
CHECK_MV(x + dia_size - dir, y - dir ); |
| 632 |
CHECK_MV(x - dir , y - dia_size + dir); |
| 633 |
CHECK_MV(x - dia_size + dir, y + dir ); |
| 634 |
} |
| 635 |
|
| 636 |
if(x!=best[0] || y!=best[1]) |
| 637 |
dia_size=0;
|
| 638 |
#if 0
|
| 639 |
{
|
| 640 |
int dx, dy, i;
|
| 641 |
static int stats[8*8];
|
| 642 |
dx= FFABS(x-best[0]);
|
| 643 |
dy= FFABS(y-best[1]);
|
| 644 |
if(dy>dx){
|
| 645 |
dx^=dy; dy^=dx; dx^=dy;
|
| 646 |
}
|
| 647 |
stats[dy*8 + dx] ++;
|
| 648 |
if(256*256*256*64 % (stats[0]+1)==0){
|
| 649 |
for(i=0; i<64; i++){
|
| 650 |
if((i&7)==0) printf("\n");
|
| 651 |
printf("%8d ", stats[i]);
|
| 652 |
}
|
| 653 |
printf("\n");
|
| 654 |
}
|
| 655 |
}
|
| 656 |
#endif
|
| 657 |
} |
| 658 |
return dmin;
|
| 659 |
} |
| 660 |
|
| 661 |
static int hex_search(MpegEncContext * s, int *best, int dmin, |
| 662 |
int src_index, int ref_index, int const penalty_factor, |
| 663 |
int size, int h, int flags, int dia_size) |
| 664 |
{
|
| 665 |
MotionEstContext * const c= &s->me;
|
| 666 |
me_cmp_func cmpf, chroma_cmpf; |
| 667 |
LOAD_COMMON |
| 668 |
LOAD_COMMON2 |
| 669 |
int map_generation= c->map_generation;
|
| 670 |
int x,y,d;
|
| 671 |
const int dec= dia_size & (dia_size-1); |
| 672 |
|
| 673 |
cmpf= s->dsp.me_cmp[size]; |
| 674 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 675 |
|
| 676 |
for(;dia_size; dia_size= dec ? dia_size-1 : dia_size>>1){ |
| 677 |
do{
|
| 678 |
x= best[0];
|
| 679 |
y= best[1];
|
| 680 |
|
| 681 |
CHECK_CLIPPED_MV(x -dia_size , y); |
| 682 |
CHECK_CLIPPED_MV(x+ dia_size , y); |
| 683 |
CHECK_CLIPPED_MV(x+( dia_size>>1), y+dia_size);
|
| 684 |
CHECK_CLIPPED_MV(x+( dia_size>>1), y-dia_size);
|
| 685 |
if(dia_size>1){ |
| 686 |
CHECK_CLIPPED_MV(x+(-dia_size>>1), y+dia_size);
|
| 687 |
CHECK_CLIPPED_MV(x+(-dia_size>>1), y-dia_size);
|
| 688 |
} |
| 689 |
}while(best[0] != x || best[1] != y); |
| 690 |
} |
| 691 |
|
| 692 |
return dmin;
|
| 693 |
} |
| 694 |
|
| 695 |
static int l2s_dia_search(MpegEncContext * s, int *best, int dmin, |
| 696 |
int src_index, int ref_index, int const penalty_factor, |
| 697 |
int size, int h, int flags) |
| 698 |
{
|
| 699 |
MotionEstContext * const c= &s->me;
|
| 700 |
me_cmp_func cmpf, chroma_cmpf; |
| 701 |
LOAD_COMMON |
| 702 |
LOAD_COMMON2 |
| 703 |
int map_generation= c->map_generation;
|
| 704 |
int x,y,i,d;
|
| 705 |
int dia_size= c->dia_size&0xFF; |
| 706 |
const int dec= dia_size & (dia_size-1); |
| 707 |
static const int hex[8][2]={{-2, 0}, {-1,-1}, { 0,-2}, { 1,-1}, |
| 708 |
{ 2, 0}, { 1, 1}, { 0, 2}, {-1, 1}};
|
| 709 |
|
| 710 |
cmpf= s->dsp.me_cmp[size]; |
| 711 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 712 |
|
| 713 |
for(; dia_size; dia_size= dec ? dia_size-1 : dia_size>>1){ |
| 714 |
do{
|
| 715 |
x= best[0];
|
| 716 |
y= best[1];
|
| 717 |
for(i=0; i<8; i++){ |
| 718 |
CHECK_CLIPPED_MV(x+hex[i][0]*dia_size, y+hex[i][1]*dia_size); |
| 719 |
} |
| 720 |
}while(best[0] != x || best[1] != y); |
| 721 |
} |
| 722 |
|
| 723 |
x= best[0];
|
| 724 |
y= best[1];
|
| 725 |
CHECK_CLIPPED_MV(x+1, y);
|
| 726 |
CHECK_CLIPPED_MV(x, y+1);
|
| 727 |
CHECK_CLIPPED_MV(x-1, y);
|
| 728 |
CHECK_CLIPPED_MV(x, y-1);
|
| 729 |
|
| 730 |
return dmin;
|
| 731 |
} |
| 732 |
|
| 733 |
static int umh_search(MpegEncContext * s, int *best, int dmin, |
| 734 |
int src_index, int ref_index, int const penalty_factor, |
| 735 |
int size, int h, int flags) |
| 736 |
{
|
| 737 |
MotionEstContext * const c= &s->me;
|
| 738 |
me_cmp_func cmpf, chroma_cmpf; |
| 739 |
LOAD_COMMON |
| 740 |
LOAD_COMMON2 |
| 741 |
int map_generation= c->map_generation;
|
| 742 |
int x,y,x2,y2, i, j, d;
|
| 743 |
const int dia_size= c->dia_size&0xFE; |
| 744 |
static const int hex[16][2]={{-4,-2}, {-4,-1}, {-4, 0}, {-4, 1}, {-4, 2}, |
| 745 |
{ 4,-2}, { 4,-1}, { 4, 0}, { 4, 1}, { 4, 2},
|
| 746 |
{-2, 3}, { 0, 4}, { 2, 3},
|
| 747 |
{-2,-3}, { 0,-4}, { 2,-3},};
|
| 748 |
|
| 749 |
cmpf= s->dsp.me_cmp[size]; |
| 750 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 751 |
|
| 752 |
x= best[0];
|
| 753 |
y= best[1];
|
| 754 |
for(x2=FFMAX(x-dia_size+1, xmin); x2<=FFMIN(x+dia_size-1,xmax); x2+=2){ |
| 755 |
CHECK_MV(x2, y); |
| 756 |
} |
| 757 |
for(y2=FFMAX(y-dia_size/2+1, ymin); y2<=FFMIN(y+dia_size/2-1,ymax); y2+=2){ |
| 758 |
CHECK_MV(x, y2); |
| 759 |
} |
| 760 |
|
| 761 |
x= best[0];
|
| 762 |
y= best[1];
|
| 763 |
for(y2=FFMAX(y-2, ymin); y2<=FFMIN(y+2,ymax); y2++){ |
| 764 |
for(x2=FFMAX(x-2, xmin); x2<=FFMIN(x+2,xmax); x2++){ |
| 765 |
CHECK_MV(x2, y2); |
| 766 |
} |
| 767 |
} |
| 768 |
|
| 769 |
//FIXME prevent the CLIP stuff
|
| 770 |
|
| 771 |
for(j=1; j<=dia_size/4; j++){ |
| 772 |
for(i=0; i<16; i++){ |
| 773 |
CHECK_CLIPPED_MV(x+hex[i][0]*j, y+hex[i][1]*j); |
| 774 |
} |
| 775 |
} |
| 776 |
|
| 777 |
return hex_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags, 2); |
| 778 |
} |
| 779 |
|
| 780 |
#define SAB_CHECK_MV(ax,ay)\
|
| 781 |
{\
|
| 782 |
const int key= ((ay)<<ME_MAP_MV_BITS) + (ax) + map_generation;\ |
| 783 |
const int index= (((ay)<<ME_MAP_SHIFT) + (ax))&(ME_MAP_SIZE-1);\ |
| 784 |
/*printf("sab check %d %d\n", ax, ay);*/\
|
| 785 |
if(map[index]!=key){\
|
| 786 |
d= cmp(s, ax, ay, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags);\ |
| 787 |
map[index]= key;\ |
| 788 |
score_map[index]= d;\ |
| 789 |
d += (mv_penalty[((ax)<<shift)-pred_x] + mv_penalty[((ay)<<shift)-pred_y])*penalty_factor;\ |
| 790 |
/*printf("score: %d\n", d);*/\
|
| 791 |
if(d < minima[minima_count-1].height){\ |
| 792 |
int j=0;\ |
| 793 |
\ |
| 794 |
while(d >= minima[j].height) j++;\
|
| 795 |
\ |
| 796 |
memmove(&minima [j+1], &minima [j], (minima_count - j - 1)*sizeof(Minima));\ |
| 797 |
\ |
| 798 |
minima[j].checked= 0;\
|
| 799 |
minima[j].height= d;\ |
| 800 |
minima[j].x= ax;\ |
| 801 |
minima[j].y= ay;\ |
| 802 |
\ |
| 803 |
i=-1;\
|
| 804 |
continue;\
|
| 805 |
}\ |
| 806 |
}\ |
| 807 |
} |
| 808 |
|
| 809 |
#define MAX_SAB_SIZE ME_MAP_SIZE
|
| 810 |
static int sab_diamond_search(MpegEncContext * s, int *best, int dmin, |
| 811 |
int src_index, int ref_index, int const penalty_factor, |
| 812 |
int size, int h, int flags) |
| 813 |
{
|
| 814 |
MotionEstContext * const c= &s->me;
|
| 815 |
me_cmp_func cmpf, chroma_cmpf; |
| 816 |
Minima minima[MAX_SAB_SIZE]; |
| 817 |
const int minima_count= FFABS(c->dia_size); |
| 818 |
int i, j;
|
| 819 |
LOAD_COMMON |
| 820 |
LOAD_COMMON2 |
| 821 |
int map_generation= c->map_generation;
|
| 822 |
|
| 823 |
cmpf= s->dsp.me_cmp[size]; |
| 824 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 825 |
|
| 826 |
for(j=i=0; i<ME_MAP_SIZE; i++){ |
| 827 |
uint32_t key= map[i]; |
| 828 |
|
| 829 |
key += (1<<(ME_MAP_MV_BITS-1)) + (1<<(2*ME_MAP_MV_BITS-1)); |
| 830 |
|
| 831 |
if((key&((-1)<<(2*ME_MAP_MV_BITS))) != map_generation) continue; |
| 832 |
|
| 833 |
assert(j<MAX_SAB_SIZE); //max j = number of predictors
|
| 834 |
|
| 835 |
minima[j].height= score_map[i]; |
| 836 |
minima[j].x= key & ((1<<ME_MAP_MV_BITS)-1); key>>=ME_MAP_MV_BITS; |
| 837 |
minima[j].y= key & ((1<<ME_MAP_MV_BITS)-1); |
| 838 |
minima[j].x-= (1<<(ME_MAP_MV_BITS-1)); |
| 839 |
minima[j].y-= (1<<(ME_MAP_MV_BITS-1)); |
| 840 |
minima[j].checked=0;
|
| 841 |
if(minima[j].x || minima[j].y)
|
| 842 |
minima[j].height+= (mv_penalty[((minima[j].x)<<shift)-pred_x] + mv_penalty[((minima[j].y)<<shift)-pred_y])*penalty_factor; |
| 843 |
|
| 844 |
j++; |
| 845 |
} |
| 846 |
|
| 847 |
qsort(minima, j, sizeof(Minima), minima_cmp);
|
| 848 |
|
| 849 |
for(; j<minima_count; j++){
|
| 850 |
minima[j].height=256*256*256*64; |
| 851 |
minima[j].checked=0;
|
| 852 |
minima[j].x= minima[j].y=0;
|
| 853 |
} |
| 854 |
|
| 855 |
for(i=0; i<minima_count; i++){ |
| 856 |
const int x= minima[i].x; |
| 857 |
const int y= minima[i].y; |
| 858 |
int d;
|
| 859 |
|
| 860 |
if(minima[i].checked) continue; |
| 861 |
|
| 862 |
if( x >= xmax || x <= xmin
|
| 863 |
|| y >= ymax || y <= ymin) |
| 864 |
continue;
|
| 865 |
|
| 866 |
SAB_CHECK_MV(x-1, y)
|
| 867 |
SAB_CHECK_MV(x+1, y)
|
| 868 |
SAB_CHECK_MV(x , y-1)
|
| 869 |
SAB_CHECK_MV(x , y+1)
|
| 870 |
|
| 871 |
minima[i].checked= 1;
|
| 872 |
} |
| 873 |
|
| 874 |
best[0]= minima[0].x; |
| 875 |
best[1]= minima[0].y; |
| 876 |
dmin= minima[0].height;
|
| 877 |
|
| 878 |
if( best[0] < xmax && best[0] > xmin |
| 879 |
&& best[1] < ymax && best[1] > ymin){ |
| 880 |
int d;
|
| 881 |
//ensure that the refernece samples for hpel refinement are in the map
|
| 882 |
CHECK_MV(best[0]-1, best[1]) |
| 883 |
CHECK_MV(best[0]+1, best[1]) |
| 884 |
CHECK_MV(best[0], best[1]-1) |
| 885 |
CHECK_MV(best[0], best[1]+1) |
| 886 |
} |
| 887 |
return dmin;
|
| 888 |
} |
| 889 |
|
| 890 |
static int var_diamond_search(MpegEncContext * s, int *best, int dmin, |
| 891 |
int src_index, int ref_index, int const penalty_factor, |
| 892 |
int size, int h, int flags) |
| 893 |
{
|
| 894 |
MotionEstContext * const c= &s->me;
|
| 895 |
me_cmp_func cmpf, chroma_cmpf; |
| 896 |
int dia_size;
|
| 897 |
LOAD_COMMON |
| 898 |
LOAD_COMMON2 |
| 899 |
int map_generation= c->map_generation;
|
| 900 |
|
| 901 |
cmpf= s->dsp.me_cmp[size]; |
| 902 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 903 |
|
| 904 |
for(dia_size=1; dia_size<=c->dia_size; dia_size++){ |
| 905 |
int dir, start, end;
|
| 906 |
const int x= best[0]; |
| 907 |
const int y= best[1]; |
| 908 |
|
| 909 |
start= FFMAX(0, y + dia_size - ymax);
|
| 910 |
end = FFMIN(dia_size, xmax - x + 1);
|
| 911 |
for(dir= start; dir<end; dir++){
|
| 912 |
int d;
|
| 913 |
|
| 914 |
//check(x + dir,y + dia_size - dir,0, a0)
|
| 915 |
CHECK_MV(x + dir , y + dia_size - dir); |
| 916 |
} |
| 917 |
|
| 918 |
start= FFMAX(0, x + dia_size - xmax);
|
| 919 |
end = FFMIN(dia_size, y - ymin + 1);
|
| 920 |
for(dir= start; dir<end; dir++){
|
| 921 |
int d;
|
| 922 |
|
| 923 |
//check(x + dia_size - dir, y - dir,0, a1)
|
| 924 |
CHECK_MV(x + dia_size - dir, y - dir ); |
| 925 |
} |
| 926 |
|
| 927 |
start= FFMAX(0, -y + dia_size + ymin );
|
| 928 |
end = FFMIN(dia_size, x - xmin + 1);
|
| 929 |
for(dir= start; dir<end; dir++){
|
| 930 |
int d;
|
| 931 |
|
| 932 |
//check(x - dir,y - dia_size + dir,0, a2)
|
| 933 |
CHECK_MV(x - dir , y - dia_size + dir); |
| 934 |
} |
| 935 |
|
| 936 |
start= FFMAX(0, -x + dia_size + xmin );
|
| 937 |
end = FFMIN(dia_size, ymax - y + 1);
|
| 938 |
for(dir= start; dir<end; dir++){
|
| 939 |
int d;
|
| 940 |
|
| 941 |
//check(x - dia_size + dir, y + dir,0, a3)
|
| 942 |
CHECK_MV(x - dia_size + dir, y + dir ); |
| 943 |
} |
| 944 |
|
| 945 |
if(x!=best[0] || y!=best[1]) |
| 946 |
dia_size=0;
|
| 947 |
#if 0
|
| 948 |
{
|
| 949 |
int dx, dy, i;
|
| 950 |
static int stats[8*8];
|
| 951 |
dx= FFABS(x-best[0]);
|
| 952 |
dy= FFABS(y-best[1]);
|
| 953 |
stats[dy*8 + dx] ++;
|
| 954 |
if(256*256*256*64 % (stats[0]+1)==0){
|
| 955 |
for(i=0; i<64; i++){
|
| 956 |
if((i&7)==0) printf("\n");
|
| 957 |
printf("%6d ", stats[i]);
|
| 958 |
}
|
| 959 |
printf("\n");
|
| 960 |
}
|
| 961 |
}
|
| 962 |
#endif
|
| 963 |
} |
| 964 |
return dmin;
|
| 965 |
} |
| 966 |
|
| 967 |
static av_always_inline int diamond_search(MpegEncContext * s, int *best, int dmin, |
| 968 |
int src_index, int ref_index, int const penalty_factor, |
| 969 |
int size, int h, int flags){ |
| 970 |
MotionEstContext * const c= &s->me;
|
| 971 |
if(c->dia_size==-1) |
| 972 |
return funny_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 973 |
else if(c->dia_size<-1) |
| 974 |
return sab_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 975 |
else if(c->dia_size<2) |
| 976 |
return small_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 977 |
else if(c->dia_size>768) |
| 978 |
return umh_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 979 |
else if(c->dia_size>512) |
| 980 |
return hex_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags, c->dia_size&0xFF); |
| 981 |
else if(c->dia_size>256) |
| 982 |
return l2s_dia_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 983 |
else
|
| 984 |
return var_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
|
| 985 |
} |
| 986 |
|
| 987 |
static av_always_inline int epzs_motion_search_internal(MpegEncContext * s, int *mx_ptr, int *my_ptr, |
| 988 |
int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], |
| 989 |
int ref_mv_scale, int flags, int size, int h) |
| 990 |
{
|
| 991 |
MotionEstContext * const c= &s->me;
|
| 992 |
int best[2]={0, 0}; |
| 993 |
int d, dmin;
|
| 994 |
int map_generation;
|
| 995 |
int penalty_factor;
|
| 996 |
const int ref_mv_stride= s->mb_stride; //pass as arg FIXME |
| 997 |
const int ref_mv_xy= s->mb_x + s->mb_y*ref_mv_stride; //add to last_mv beforepassing FIXME |
| 998 |
me_cmp_func cmpf, chroma_cmpf; |
| 999 |
|
| 1000 |
LOAD_COMMON |
| 1001 |
LOAD_COMMON2 |
| 1002 |
|
| 1003 |
if(c->pre_pass){
|
| 1004 |
penalty_factor= c->pre_penalty_factor; |
| 1005 |
cmpf= s->dsp.me_pre_cmp[size]; |
| 1006 |
chroma_cmpf= s->dsp.me_pre_cmp[size+1];
|
| 1007 |
}else{
|
| 1008 |
penalty_factor= c->penalty_factor; |
| 1009 |
cmpf= s->dsp.me_cmp[size]; |
| 1010 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 1011 |
} |
| 1012 |
|
| 1013 |
map_generation= update_map_generation(c); |
| 1014 |
|
| 1015 |
assert(cmpf); |
| 1016 |
dmin= cmp(s, 0, 0, 0, 0, size, h, ref_index, src_index, cmpf, chroma_cmpf, flags); |
| 1017 |
map[0]= map_generation;
|
| 1018 |
score_map[0]= dmin;
|
| 1019 |
|
| 1020 |
/* first line */
|
| 1021 |
if (s->first_slice_line) {
|
| 1022 |
CHECK_MV(P_LEFT[0]>>shift, P_LEFT[1]>>shift) |
| 1023 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1024 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1025 |
}else{
|
| 1026 |
if(dmin<((h*h*s->avctx->mv0_threshold)>>8) |
| 1027 |
&& ( P_LEFT[0] |P_LEFT[1] |
| 1028 |
|P_TOP[0] |P_TOP[1] |
| 1029 |
|P_TOPRIGHT[0]|P_TOPRIGHT[1])==0){ |
| 1030 |
*mx_ptr= 0;
|
| 1031 |
*my_ptr= 0;
|
| 1032 |
c->skip=1;
|
| 1033 |
return dmin;
|
| 1034 |
} |
| 1035 |
CHECK_MV( P_MEDIAN[0] >>shift , P_MEDIAN[1] >>shift) |
| 1036 |
CHECK_CLIPPED_MV((P_MEDIAN[0]>>shift) , (P_MEDIAN[1]>>shift)-1) |
| 1037 |
CHECK_CLIPPED_MV((P_MEDIAN[0]>>shift) , (P_MEDIAN[1]>>shift)+1) |
| 1038 |
CHECK_CLIPPED_MV((P_MEDIAN[0]>>shift)-1, (P_MEDIAN[1]>>shift) ) |
| 1039 |
CHECK_CLIPPED_MV((P_MEDIAN[0]>>shift)+1, (P_MEDIAN[1]>>shift) ) |
| 1040 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1041 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1042 |
CHECK_MV(P_LEFT[0] >>shift, P_LEFT[1] >>shift) |
| 1043 |
CHECK_MV(P_TOP[0] >>shift, P_TOP[1] >>shift) |
| 1044 |
CHECK_MV(P_TOPRIGHT[0]>>shift, P_TOPRIGHT[1]>>shift) |
| 1045 |
} |
| 1046 |
if(dmin>h*h*4){ |
| 1047 |
if(c->pre_pass){
|
| 1048 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy-1][0]*ref_mv_scale + (1<<15))>>16, |
| 1049 |
(last_mv[ref_mv_xy-1][1]*ref_mv_scale + (1<<15))>>16) |
| 1050 |
if(!s->first_slice_line)
|
| 1051 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy-ref_mv_stride][0]*ref_mv_scale + (1<<15))>>16, |
| 1052 |
(last_mv[ref_mv_xy-ref_mv_stride][1]*ref_mv_scale + (1<<15))>>16) |
| 1053 |
}else{
|
| 1054 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+1][0]*ref_mv_scale + (1<<15))>>16, |
| 1055 |
(last_mv[ref_mv_xy+1][1]*ref_mv_scale + (1<<15))>>16) |
| 1056 |
if(s->mb_y+1<s->end_mb_y) //FIXME replace at least with last_slice_line |
| 1057 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+ref_mv_stride][0]*ref_mv_scale + (1<<15))>>16, |
| 1058 |
(last_mv[ref_mv_xy+ref_mv_stride][1]*ref_mv_scale + (1<<15))>>16) |
| 1059 |
} |
| 1060 |
} |
| 1061 |
|
| 1062 |
if(c->avctx->last_predictor_count){
|
| 1063 |
const int count= c->avctx->last_predictor_count; |
| 1064 |
const int xstart= FFMAX(0, s->mb_x - count); |
| 1065 |
const int ystart= FFMAX(0, s->mb_y - count); |
| 1066 |
const int xend= FFMIN(s->mb_width , s->mb_x + count + 1); |
| 1067 |
const int yend= FFMIN(s->mb_height, s->mb_y + count + 1); |
| 1068 |
int mb_y;
|
| 1069 |
|
| 1070 |
for(mb_y=ystart; mb_y<yend; mb_y++){
|
| 1071 |
int mb_x;
|
| 1072 |
for(mb_x=xstart; mb_x<xend; mb_x++){
|
| 1073 |
const int xy= mb_x + 1 + (mb_y + 1)*ref_mv_stride; |
| 1074 |
int mx= (last_mv[xy][0]*ref_mv_scale + (1<<15))>>16; |
| 1075 |
int my= (last_mv[xy][1]*ref_mv_scale + (1<<15))>>16; |
| 1076 |
|
| 1077 |
if(mx>xmax || mx<xmin || my>ymax || my<ymin) continue; |
| 1078 |
CHECK_MV(mx,my) |
| 1079 |
} |
| 1080 |
} |
| 1081 |
} |
| 1082 |
|
| 1083 |
//check(best[0],best[1],0, b0)
|
| 1084 |
dmin= diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags); |
| 1085 |
|
| 1086 |
//check(best[0],best[1],0, b1)
|
| 1087 |
*mx_ptr= best[0];
|
| 1088 |
*my_ptr= best[1];
|
| 1089 |
|
| 1090 |
// printf("%d %d %d \n", best[0], best[1], dmin);
|
| 1091 |
return dmin;
|
| 1092 |
} |
| 1093 |
|
| 1094 |
//this function is dedicated to the braindamaged gcc
|
| 1095 |
inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, |
| 1096 |
int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], |
| 1097 |
int ref_mv_scale, int size, int h) |
| 1098 |
{
|
| 1099 |
MotionEstContext * const c= &s->me;
|
| 1100 |
//FIXME convert other functions in the same way if faster
|
| 1101 |
if(c->flags==0 && h==16 && size==0){ |
| 1102 |
return epzs_motion_search_internal(s, mx_ptr, my_ptr, P, src_index, ref_index, last_mv, ref_mv_scale, 0, 0, 16); |
| 1103 |
// case FLAG_QPEL:
|
| 1104 |
// return epzs_motion_search_internal(s, mx_ptr, my_ptr, P, src_index, ref_index, last_mv, ref_mv_scale, FLAG_QPEL);
|
| 1105 |
}else{
|
| 1106 |
return epzs_motion_search_internal(s, mx_ptr, my_ptr, P, src_index, ref_index, last_mv, ref_mv_scale, c->flags, size, h);
|
| 1107 |
} |
| 1108 |
} |
| 1109 |
|
| 1110 |
static int epzs_motion_search4(MpegEncContext * s, |
| 1111 |
int *mx_ptr, int *my_ptr, int P[10][2], |
| 1112 |
int src_index, int ref_index, int16_t (*last_mv)[2], |
| 1113 |
int ref_mv_scale)
|
| 1114 |
{
|
| 1115 |
MotionEstContext * const c= &s->me;
|
| 1116 |
int best[2]={0, 0}; |
| 1117 |
int d, dmin;
|
| 1118 |
int map_generation;
|
| 1119 |
const int penalty_factor= c->penalty_factor; |
| 1120 |
const int size=1; |
| 1121 |
const int h=8; |
| 1122 |
const int ref_mv_stride= s->mb_stride; |
| 1123 |
const int ref_mv_xy= s->mb_x + s->mb_y *ref_mv_stride; |
| 1124 |
me_cmp_func cmpf, chroma_cmpf; |
| 1125 |
LOAD_COMMON |
| 1126 |
int flags= c->flags;
|
| 1127 |
LOAD_COMMON2 |
| 1128 |
|
| 1129 |
cmpf= s->dsp.me_cmp[size]; |
| 1130 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 1131 |
|
| 1132 |
map_generation= update_map_generation(c); |
| 1133 |
|
| 1134 |
dmin = 1000000;
|
| 1135 |
//printf("%d %d %d %d //",xmin, ymin, xmax, ymax);
|
| 1136 |
/* first line */
|
| 1137 |
if (s->first_slice_line) {
|
| 1138 |
CHECK_MV(P_LEFT[0]>>shift, P_LEFT[1]>>shift) |
| 1139 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1140 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1141 |
CHECK_MV(P_MV1[0]>>shift, P_MV1[1]>>shift) |
| 1142 |
}else{
|
| 1143 |
CHECK_MV(P_MV1[0]>>shift, P_MV1[1]>>shift) |
| 1144 |
//FIXME try some early stop
|
| 1145 |
CHECK_MV(P_MEDIAN[0]>>shift, P_MEDIAN[1]>>shift) |
| 1146 |
CHECK_MV(P_LEFT[0]>>shift, P_LEFT[1]>>shift) |
| 1147 |
CHECK_MV(P_TOP[0]>>shift, P_TOP[1]>>shift) |
| 1148 |
CHECK_MV(P_TOPRIGHT[0]>>shift, P_TOPRIGHT[1]>>shift) |
| 1149 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1150 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1151 |
} |
| 1152 |
if(dmin>64*4){ |
| 1153 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+1][0]*ref_mv_scale + (1<<15))>>16, |
| 1154 |
(last_mv[ref_mv_xy+1][1]*ref_mv_scale + (1<<15))>>16) |
| 1155 |
if(s->mb_y+1<s->end_mb_y) //FIXME replace at least with last_slice_line |
| 1156 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+ref_mv_stride][0]*ref_mv_scale + (1<<15))>>16, |
| 1157 |
(last_mv[ref_mv_xy+ref_mv_stride][1]*ref_mv_scale + (1<<15))>>16) |
| 1158 |
} |
| 1159 |
|
| 1160 |
dmin= diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags); |
| 1161 |
|
| 1162 |
*mx_ptr= best[0];
|
| 1163 |
*my_ptr= best[1];
|
| 1164 |
|
| 1165 |
// printf("%d %d %d \n", best[0], best[1], dmin);
|
| 1166 |
return dmin;
|
| 1167 |
} |
| 1168 |
|
| 1169 |
//try to merge with above FIXME (needs PSNR test)
|
| 1170 |
static int epzs_motion_search2(MpegEncContext * s, |
| 1171 |
int *mx_ptr, int *my_ptr, int P[10][2], |
| 1172 |
int src_index, int ref_index, int16_t (*last_mv)[2], |
| 1173 |
int ref_mv_scale)
|
| 1174 |
{
|
| 1175 |
MotionEstContext * const c= &s->me;
|
| 1176 |
int best[2]={0, 0}; |
| 1177 |
int d, dmin;
|
| 1178 |
int map_generation;
|
| 1179 |
const int penalty_factor= c->penalty_factor; |
| 1180 |
const int size=0; //FIXME pass as arg |
| 1181 |
const int h=8; |
| 1182 |
const int ref_mv_stride= s->mb_stride; |
| 1183 |
const int ref_mv_xy= s->mb_x + s->mb_y *ref_mv_stride; |
| 1184 |
me_cmp_func cmpf, chroma_cmpf; |
| 1185 |
LOAD_COMMON |
| 1186 |
int flags= c->flags;
|
| 1187 |
LOAD_COMMON2 |
| 1188 |
|
| 1189 |
cmpf= s->dsp.me_cmp[size]; |
| 1190 |
chroma_cmpf= s->dsp.me_cmp[size+1];
|
| 1191 |
|
| 1192 |
map_generation= update_map_generation(c); |
| 1193 |
|
| 1194 |
dmin = 1000000;
|
| 1195 |
//printf("%d %d %d %d //",xmin, ymin, xmax, ymax);
|
| 1196 |
/* first line */
|
| 1197 |
if (s->first_slice_line) {
|
| 1198 |
CHECK_MV(P_LEFT[0]>>shift, P_LEFT[1]>>shift) |
| 1199 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1200 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1201 |
CHECK_MV(P_MV1[0]>>shift, P_MV1[1]>>shift) |
| 1202 |
}else{
|
| 1203 |
CHECK_MV(P_MV1[0]>>shift, P_MV1[1]>>shift) |
| 1204 |
//FIXME try some early stop
|
| 1205 |
CHECK_MV(P_MEDIAN[0]>>shift, P_MEDIAN[1]>>shift) |
| 1206 |
CHECK_MV(P_LEFT[0]>>shift, P_LEFT[1]>>shift) |
| 1207 |
CHECK_MV(P_TOP[0]>>shift, P_TOP[1]>>shift) |
| 1208 |
CHECK_MV(P_TOPRIGHT[0]>>shift, P_TOPRIGHT[1]>>shift) |
| 1209 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy][0]*ref_mv_scale + (1<<15))>>16, |
| 1210 |
(last_mv[ref_mv_xy][1]*ref_mv_scale + (1<<15))>>16) |
| 1211 |
} |
| 1212 |
if(dmin>64*4){ |
| 1213 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+1][0]*ref_mv_scale + (1<<15))>>16, |
| 1214 |
(last_mv[ref_mv_xy+1][1]*ref_mv_scale + (1<<15))>>16) |
| 1215 |
if(s->mb_y+1<s->end_mb_y) //FIXME replace at least with last_slice_line |
| 1216 |
CHECK_CLIPPED_MV((last_mv[ref_mv_xy+ref_mv_stride][0]*ref_mv_scale + (1<<15))>>16, |
| 1217 |
(last_mv[ref_mv_xy+ref_mv_stride][1]*ref_mv_scale + (1<<15))>>16) |
| 1218 |
} |
| 1219 |
|
| 1220 |
dmin= diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags); |
| 1221 |
|
| 1222 |
*mx_ptr= best[0];
|
| 1223 |
*my_ptr= best[1];
|
| 1224 |
|
| 1225 |
// printf("%d %d %d \n", best[0], best[1], dmin);
|
| 1226 |
return dmin;
|
| 1227 |
} |