void ROIFinder::_updateSubArea( const uint8_t type )
{
LBASSERT( type <= 16 );
if( type == 0 )
return;
PixelViewport pvp;
switch( type )
{
case 1: pvp = PixelViewport( _dim.x1,_dim.y2,_dim.w1,_dim.h2 ); break;
case 2: pvp = PixelViewport( _dim.x2,_dim.y3,_dim.w2,_dim.h3 ); break;
case 3: pvp = PixelViewport( _dim.x3,_dim.y2,_dim.w3,_dim.h2 ); break;
case 4: pvp = PixelViewport( _dim.x2,_dim.y1,_dim.w2,_dim.h1 ); break;
case 5: pvp = PixelViewport( _dim.x1,_dim.y1,_dim.w1,_dim.h4 ); break;
case 6: pvp = PixelViewport( _dim.x1,_dim.y3,_dim.w4,_dim.h3 ); break;
case 7: pvp = PixelViewport( _dim.x3,_dim.y2,_dim.w3,_dim.h5 ); break;
case 8: pvp = PixelViewport( _dim.x2,_dim.y1,_dim.w5,_dim.h1 ); break;
case 9: pvp = PixelViewport( _dim.x1,_dim.y2,_dim.w1,_dim.h5 ); break;
case 10: pvp = PixelViewport( _dim.x2,_dim.y3,_dim.w5,_dim.h3 ); break;
case 11: pvp = PixelViewport( _dim.x3,_dim.y1,_dim.w3,_dim.h4 ); break;
case 12: pvp = PixelViewport( _dim.x1,_dim.y1,_dim.w4,_dim.h1 ); break;
case 13: pvp = PixelViewport( _dim.x1,_dim.y1,_dim.w1,_dim.h6 ); break;
case 14: pvp = PixelViewport( _dim.x3,_dim.y1,_dim.w3,_dim.h6 ); break;
case 15: pvp = PixelViewport( _dim.x1,_dim.y3,_dim.w6,_dim.h3 ); break;
case 16: pvp = PixelViewport( _dim.x1,_dim.y1,_dim.w6,_dim.h1 ); break;
default:
LBUNIMPLEMENTED;
}
LBASSERT( pvp.hasArea( ));
LBASSERT( pvp.x >=0 && pvp.y >=0 && pvp.x+pvp.w <=_w && pvp.y+pvp.h <=_h );
Area& a = _tmpAreas[type];
a.pvp = _getObjectPVP( pvp, &_mask[0] );
a.hole = _emptyFinder.getLargestEmptyArea( a.pvp );
a.emptySize = pvp.getArea() - a.pvp.getArea() + a.hole.getArea();
#ifndef NDEBUG
LBASSERT( !a.valid );
a.valid = true;
#endif
}
bool ROITracker::useROIFinder( const PixelViewport& pvp,
const uint32_t stage,
const uint128_t& frameID,
uint8_t*& ticket )
{
LBASSERT( !_needsUpdate );
ticket = 0;
const uint32_t pvpArea = pvp.getArea();
if( pvpArea < 100 )
return false;
if( _lastFrameID != frameID ) // new frame
{
stde::hash_map< uint32_t, Stage >* tmp = _prvFrame;
_prvFrame = _curFrame;
_curFrame = tmp;
_curFrame->clear();
_lastFrameID = frameID;
}
_lastStage = stage;
Stage& curStage = (*_curFrame)[ stage ];
// check if proper stage is avaliable
if( _prvFrame->find( stage ) == _prvFrame->end( )) // new stage
{
curStage.areas.push_back( Area( pvp ));
return _returnPositive( ticket );
}
//else existing stage, try to find matching area
const Area* match = 0;
uint32_t bestArea = 0;
const Stage& prvStage = (*_prvFrame)[ stage ];
for( uint32_t i = 0; i < prvStage.areas.size(); i++ )
{
PixelViewport tmp = prvStage.areas[i].pvp;
tmp.intersect( pvp );
const uint32_t area = tmp.getArea();
if( area > bestArea )
{
bestArea = area;
match = &prvStage.areas[i];
if( area == pvpArea ) // full match
break;
}
}
if( bestArea < pvpArea*2/3 ) // no proper match found, new area
{
curStage.areas.push_back( Area( pvp ));
return _returnPositive( ticket );
}
// else good match
if( match->skip == 0 ) // don't skip frame
{
curStage.areas.push_back( Area( pvp, match->lastSkip ));
return _returnPositive( ticket );
}
//else skip frame
curStage.areas.push_back( Area( pvp, match->lastSkip, match->skip-1 ));
return false;
}