dng_tile_iterator::dng_tile_iterator (const dng_point &tileSize,
const dng_rect &area)
: fArea ()
, fTileWidth (0)
, fTileHeight (0)
, fTileTop (0)
, fTileLeft (0)
, fRowLeft (0)
, fLeftPage (0)
, fRightPage (0)
, fTopPage (0)
, fBottomPage (0)
, fHorizontalPage (0)
, fVerticalPage (0)
{
dng_rect tile (area);
tile.b = Min_int32 (tile.b, tile.t + tileSize.v);
tile.r = Min_int32 (tile.r, tile.l + tileSize.h);
Initialize (tile,
area);
}
void dng_image::Get (dng_pixel_buffer &buffer,
edge_option edgeOption,
uint32 repeatV,
uint32 repeatH) const
{
// Find the overlap with the image bounds.
dng_rect overlap = buffer.fArea & fBounds;
// Move the overlapping pixels.
if (overlap.NotEmpty ())
{
dng_pixel_buffer temp (buffer);
temp.fArea = overlap;
temp.fData = buffer.DirtyPixel (overlap.t,
overlap.l,
buffer.fPlane);
DoGet (temp);
}
// See if we need to pad the edge values.
if ((edgeOption != edge_none) && (overlap != buffer.fArea))
{
dng_rect areaT (buffer.fArea);
dng_rect areaL (buffer.fArea);
dng_rect areaB (buffer.fArea);
dng_rect areaR (buffer.fArea);
areaT.b = Min_int32 (areaT.b, fBounds.t);
areaL.r = Min_int32 (areaL.r, fBounds.l);
areaB.t = Max_int32 (areaB.t, fBounds.b);
areaR.l = Max_int32 (areaR.l, fBounds.r);
dng_rect areaH (buffer.fArea);
dng_rect areaV (buffer.fArea);
areaH.l = Max_int32 (areaH.l, fBounds.l);
areaH.r = Min_int32 (areaH.r, fBounds.r);
areaV.t = Max_int32 (areaV.t, fBounds.t);
areaV.b = Min_int32 (areaV.b, fBounds.b);
// Top left.
dng_rect areaTL = areaT & areaL;
if (areaTL.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.t,
fBounds.l,
fBounds.t + (int32)repeatV,
fBounds.l + (int32)repeatH),
areaTL);
}
// Top middle.
dng_rect areaTM = areaT & areaH;
if (areaTM.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.t,
areaTM.l,
fBounds.t + (int32)repeatV,
areaTM.r),
areaTM);
}
// Top right.
dng_rect areaTR = areaT & areaR;
if (areaTR.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.t,
fBounds.r - (int32)repeatH,
fBounds.t + (int32)repeatV,
fBounds.r),
areaTR);
}
// Left middle.
dng_rect areaLM = areaL & areaV;
if (areaLM.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (areaLM.t,
fBounds.l,
areaLM.b,
fBounds.l + (int32)repeatH),
areaLM);
}
// Right middle.
dng_rect areaRM = areaR & areaV;
if (areaRM.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (areaRM.t,
fBounds.r - (int32)repeatH,
areaRM.b,
fBounds.r),
areaRM);
}
// Bottom left.
dng_rect areaBL = areaB & areaL;
if (areaBL.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.b - (int32)repeatV,
fBounds.l,
fBounds.b,
fBounds.l + (int32)repeatH),
areaBL);
}
// Bottom middle.
dng_rect areaBM = areaB & areaH;
if (areaBM.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.b - (int32)repeatV,
areaBM.l,
fBounds.b,
areaBM.r),
areaBM);
}
// Bottom right.
dng_rect areaBR = areaB & areaR;
if (areaBR.NotEmpty ())
{
GetEdge (buffer,
edgeOption,
dng_rect (fBounds.b - (int32)repeatV,
fBounds.r - (int32)repeatH,
fBounds.b,
fBounds.r),
areaBR);
}
}
}
dng_point dng_area_task::FindTileSize (const dng_rect &area) const
{
dng_rect repeatingTile1 = RepeatingTile1 ();
dng_rect repeatingTile2 = RepeatingTile2 ();
dng_rect repeatingTile3 = RepeatingTile3 ();
if (repeatingTile1.IsEmpty ())
{
repeatingTile1 = area;
}
if (repeatingTile2.IsEmpty ())
{
repeatingTile2 = area;
}
if (repeatingTile3.IsEmpty ())
{
repeatingTile3 = area;
}
uint32 repeatV = Min_uint32 (Min_uint32 (repeatingTile1.H (),
repeatingTile2.H ()),
repeatingTile3.H ());
uint32 repeatH = Min_uint32 (Min_uint32 (repeatingTile1.W (),
repeatingTile2.W ()),
repeatingTile3.W ());
dng_point maxTileSize = MaxTileSize ();
dng_point tileSize (maxTileSize);
tileSize.v = Min_int32 (tileSize.v, repeatV);
tileSize.h = Min_int32 (tileSize.h, repeatH);
uint32 countV = (repeatV + tileSize.v - 1) / tileSize.v;
uint32 countH = (repeatH + tileSize.h - 1) / tileSize.h;
tileSize.v = (repeatV + countV - 1) / countV;
tileSize.h = (repeatH + countH - 1) / countH;
dng_point unitCell = UnitCell ();
tileSize.v = ((tileSize.v + unitCell.v - 1) / unitCell.v) * unitCell.v;
tileSize.h = ((tileSize.h + unitCell.h - 1) / unitCell.h) * unitCell.h;
if (tileSize.v > maxTileSize.v)
{
tileSize.v = (maxTileSize.v / unitCell.v) * unitCell.v;
}
if (tileSize.h > maxTileSize.h)
{
tileSize.h = (maxTileSize.h / unitCell.h) * unitCell.h;
}
return tileSize;
}
