/*Fills in the mapping from macro blocks to their corresponding fragment
numbers in each plane.
_mbs: The array of macro blocks.
_fplanes: The descriptions of the fragment planes.
_ctype: The chroma decimation type.*/
static void oc_mb_create_mapping(oc_mb _mbs[],
const oc_fragment_plane _fplanes[3],int _ctype){
oc_mb_fill_cmapping_func mb_fill_cmapping;
oc_mb *mb0;
int y;
mb0=_mbs;
mb_fill_cmapping=OC_MB_FILL_CMAPPING_TABLE[_ctype];
/*Loop through the Y plane super blocks.*/
for(y=0;y<_fplanes[0].nvfrags;y+=4){
int x;
for(x=0;x<_fplanes[0].nhfrags;x+=4,mb0+=4){
int ymb;
/*Loop through the macro blocks in each super block in display order.*/
for(ymb=0;ymb<2;ymb++){
int xmb;
for(xmb=0;xmb<2;xmb++){
oc_mb *mb;
int mbx;
int mby;
mb=mb0+OC_MB_MAP[ymb][xmb];
mbx=x|xmb<<1;
mby=y|ymb<<1;
mb->x=mbx<<3;
mb->y=mby<<3;
/*Initialize fragment indexes to -1.*/
memset(mb->map,0xFF,sizeof(mb->map));
/*Make sure this macro block is within the encoded region.*/
if(mbx>=_fplanes[0].nhfrags||mby>=_fplanes[0].nvfrags){
mb->mode=OC_MODE_INVALID;
continue;
}
/*Fill in the fragment indices for the Y plane.*/
oc_mb_fill_ymapping(mb,_fplanes,mbx,mby);
/*Fill in the fragment indices for the chroma planes.*/
(*mb_fill_cmapping)(mb,_fplanes,mbx,mby);
}
}
}
}
}
/*Fills in the mapping from macro blocks to their corresponding fragment
numbers in each plane.
_mb_maps: The list of macro block maps.
_mb_modes: The list of macro block modes; macro blocks completely outside
the coded region are marked invalid.
_fplanes: The descriptions of the fragment planes.
_pixel_fmt: The chroma decimation type.*/
static void oc_mb_create_mapping(oc_mb_map _mb_maps[],
signed char _mb_modes[],const oc_fragment_plane _fplanes[3],int _pixel_fmt){
oc_mb_fill_cmapping_func mb_fill_cmapping;
unsigned sbi;
int y;
mb_fill_cmapping=OC_MB_FILL_CMAPPING_TABLE[_pixel_fmt];
/*Loop through the luma plane super blocks.*/
for(sbi=y=0;y<_fplanes[0].nvfrags;y+=4){
int x;
for(x=0;x<_fplanes[0].nhfrags;x+=4,sbi++){
int ymb;
/*Loop through the macro blocks in each super block in display order.*/
for(ymb=0;ymb<2;ymb++){
int xmb;
for(xmb=0;xmb<2;xmb++){
unsigned mbi;
int mbx;
int mby;
mbi=sbi<<2|OC_MB_MAP[ymb][xmb];
mbx=x|xmb<<1;
mby=y|ymb<<1;
/*Initialize fragment indices to -1.*/
memset(_mb_maps[mbi],0xFF,sizeof(_mb_maps[mbi]));
/*Make sure this macro block is within the encoded region.*/
if(mbx>=_fplanes[0].nhfrags||mby>=_fplanes[0].nvfrags){
_mb_modes[mbi]=OC_MODE_INVALID;
continue;
}
/*Fill in the fragment indices for the luma plane.*/
oc_mb_fill_ymapping(_mb_maps[mbi],_fplanes,mbx,mby);
/*Fill in the fragment indices for the chroma planes.*/
(*mb_fill_cmapping)(_mb_maps[mbi],_fplanes,mbx,mby);
}
}
}
}
}
