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/*****************************************************************************/
// Copyright 2006-2012 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_area_task.cpp#1 $ */
/* $DateTime: 2012/05/30 13:28:51 $ */
/* $Change: 832332 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#include "dng_area_task.h"
#include "dng_abort_sniffer.h"
#include "dng_flags.h"
#include "dng_sdk_limits.h"
#include "dng_tile_iterator.h"
#include "dng_utils.h"
#if qImagecore
extern bool gPrintTimings;
#endif
/*****************************************************************************/
dng_area_task::dng_area_task ()
: fMaxThreads (kMaxMPThreads)
, fMinTaskArea (256 * 256)
, fUnitCell (1, 1)
, fMaxTileSize (256, 256)
{
}
/*****************************************************************************/
dng_area_task::~dng_area_task ()
{
}
/*****************************************************************************/
dng_rect dng_area_task::RepeatingTile1 () const
{
return dng_rect ();
}
/*****************************************************************************/
dng_rect dng_area_task::RepeatingTile2 () const
{
return dng_rect ();
}
/*****************************************************************************/
dng_rect dng_area_task::RepeatingTile3 () const
{
return dng_rect ();
}
/*****************************************************************************/
void dng_area_task::Start (uint32 /* threadCount */,
const dng_point & /* tileSize */,
dng_memory_allocator * /* allocator */,
dng_abort_sniffer * /* sniffer */)
{
}
/*****************************************************************************/
void dng_area_task::Finish (uint32 /* threadCount */)
{
}
/*****************************************************************************/
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;
tileSize.v = Min_int32 (repeatV, maxTileSize.v);
tileSize.h = Min_int32 (repeatH, maxTileSize.h);
// What this is doing is, if the smallest repeating image tile is larger than the
// maximum tile size, adjusting the tile size down so that the tiles are as small
// as possible while still having the same number of tiles covering the
// repeat area. This makes the areas more equal in size, making MP
// algorithms work better.
// The image core team did not understand this code, and disabled it.
// Really stupid idea to turn off code you don't understand!
// I'm undoing this removal, because I think the code is correct and useful.
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;
// Round up to unit cell size.
dng_point unitCell = UnitCell ();
if (unitCell.h != 1 || unitCell.v != 1)
{
tileSize.v = ((tileSize.v + unitCell.v - 1) / unitCell.v) * unitCell.v;
tileSize.h = ((tileSize.h + unitCell.h - 1) / unitCell.h) * unitCell.h;
}
// But if that is larger than maximum tile size, round down to unit cell size.
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;
}
#if qImagecore
if (gPrintTimings)
{
fprintf (stdout, "\nRender tile for below: %d x %d\n", (int32) tileSize.h, (int32) tileSize.v);
}
#endif
return tileSize;
}
/*****************************************************************************/
void dng_area_task::ProcessOnThread (uint32 threadIndex,
const dng_rect &area,
const dng_point &tileSize,
dng_abort_sniffer *sniffer)
{
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;
}
dng_rect tile1;
dng_tile_iterator iter1 (repeatingTile3, area);
while (iter1.GetOneTile (tile1))
{
dng_rect tile2;
dng_tile_iterator iter2 (repeatingTile2, tile1);
while (iter2.GetOneTile (tile2))
{
dng_rect tile3;
dng_tile_iterator iter3 (repeatingTile1, tile2);
while (iter3.GetOneTile (tile3))
{
dng_rect tile4;
dng_tile_iterator iter4 (tileSize, tile3);
while (iter4.GetOneTile (tile4))
{
dng_abort_sniffer::SniffForAbort (sniffer);
Process (threadIndex, tile4, sniffer);
}
}
}
}
}
/*****************************************************************************/
void dng_area_task::Perform (dng_area_task &task,
const dng_rect &area,
dng_memory_allocator *allocator,
dng_abort_sniffer *sniffer)
{
dng_point tileSize (task.FindTileSize (area));
task.Start (1, tileSize, allocator, sniffer);
task.ProcessOnThread (0, area, tileSize, sniffer);
task.Finish (1);
}
/*****************************************************************************/
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