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UMH support (dia_size=-1 activates it) 

Originally committed as revision 7192 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-12-01 09:48:33 +00:00
parent ac003d2461
commit c7675718e4
1 changed files with 65 additions and 1 deletions
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66
libavcodec/motion_est_template.c
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@ -658,6 +658,70 @@ if(256*256*256*64 % (stats[0]+1)==0){
return dmin;
}
static int umh_search(MpegEncContext * s, int *best, int dmin,
int src_index, int ref_index, int const penalty_factor,
int size, int h, int flags)
{
MotionEstContext * const c= &s->me;
me_cmp_func cmpf, chroma_cmpf;
LOAD_COMMON
LOAD_COMMON2
int map_generation= c->map_generation;
int x,y,x2,y2, i, j, d;
static const int hex[16][2]={{-4,-2}, {-4,-1}, {-4, 0}, {-4, 1}, {-4, 2},
{ 4,-2}, { 4,-1}, { 4, 0}, { 4, 1}, { 4, 2},
{-2, 3}, { 0, 4}, { 2, 3},
{-2, 3}, { 0, 4}, { 2, 3},};
static const int hex2[6][2]={{-2, 0}, { 2,0}, {-1,-2}, {1,-2}, {-1,2},{1,2}};
cmpf= s->dsp.me_cmp[size];
chroma_cmpf= s->dsp.me_cmp[size+1];
x= best[0];
y= best[1];
for(x2=FFMAX(x-15, xmin); x2<=FFMIN(x+15,xmax); x2+=2){
CHECK_MV(x2, y);
}
for(y2=FFMAX(y- 7, ymin); y2<=FFMIN(y+ 7,ymax); y2+=2){
CHECK_MV(x, y2);
}
x= best[0];
y= best[1];
for(y2=FFMAX(y-2, ymin); y2<=FFMIN(y+2,ymax); y2++){
for(x2=FFMAX(x-2, xmin); x2<=FFMIN(x+2,xmax); x2++){
CHECK_MV(x2, y2);
}
}
//FIXME prevent the CLIP stuff
for(j=1; j<=4; j++){
for(i=0; i<16; i++){
CHECK_CLIPED_MV(x+hex[i][0]*j, y+hex[i][1]*j);
}
}
do{
x= best[0];
y= best[1];
for(i=0; i<6; i++){
CHECK_CLIPED_MV(x+hex2[i][0], y+hex2[i][1]);
}
}while(best[0] != x || best[1] != y);
do{
x= best[0];
y= best[1];
CHECK_CLIPED_MV(x+1, y);
CHECK_CLIPED_MV(x, y+1);
CHECK_CLIPED_MV(x-1, y);
CHECK_CLIPED_MV(x, y-1);
}while(best[0] != x || best[1] != y);
return dmin;
}
#define SAB_CHECK_MV(ax,ay)\
{\
const int key= ((ay)<<ME_MAP_MV_BITS) + (ax) + map_generation;\
@ -850,7 +914,7 @@ static always_inline int diamond_search(MpegEncContext * s, int *best, int dmin,
int size, int h, int flags){
MotionEstContext * const c= &s->me;
if(c->dia_size==-1)
return funny_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
return umh_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
else if(c->dia_size<-1)
return sab_diamond_search(s, best, dmin, src_index, ref_index, penalty_factor, size, h, flags);
else if(c->dia_size<2)