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271 lines
6.1 KiB
271 lines
6.1 KiB
/*****************************************************************************/
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// Copyright 2006-2012 Adobe Systems Incorporated
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// All Rights Reserved.
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//
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// NOTICE: Adobe permits you to use, modify, and distribute this file in
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// accordance with the terms of the Adobe license agreement accompanying it.
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/*****************************************************************************/
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/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_area_task.cpp#1 $ */
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/* $DateTime: 2012/05/30 13:28:51 $ */
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/* $Change: 832332 $ */
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/* $Author: tknoll $ */
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/*****************************************************************************/
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#include "dng_area_task.h"
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#include "dng_abort_sniffer.h"
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#include "dng_flags.h"
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#include "dng_sdk_limits.h"
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#include "dng_tile_iterator.h"
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#include "dng_utils.h"
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#if qImagecore
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extern bool gPrintTimings;
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#endif
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/*****************************************************************************/
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dng_area_task::dng_area_task ()
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: fMaxThreads (kMaxMPThreads)
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, fMinTaskArea (256 * 256)
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, fUnitCell (1, 1)
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, fMaxTileSize (256, 256)
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{
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}
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/*****************************************************************************/
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dng_area_task::~dng_area_task ()
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{
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}
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/*****************************************************************************/
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dng_rect dng_area_task::RepeatingTile1 () const
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{
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return dng_rect ();
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}
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/*****************************************************************************/
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dng_rect dng_area_task::RepeatingTile2 () const
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{
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return dng_rect ();
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}
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/*****************************************************************************/
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dng_rect dng_area_task::RepeatingTile3 () const
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{
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return dng_rect ();
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}
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/*****************************************************************************/
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void dng_area_task::Start (uint32 /* threadCount */,
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const dng_point & /* tileSize */,
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dng_memory_allocator * /* allocator */,
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dng_abort_sniffer * /* sniffer */)
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{
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}
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/*****************************************************************************/
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void dng_area_task::Finish (uint32 /* threadCount */)
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{
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}
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/*****************************************************************************/
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dng_point dng_area_task::FindTileSize (const dng_rect &area) const
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{
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dng_rect repeatingTile1 = RepeatingTile1 ();
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dng_rect repeatingTile2 = RepeatingTile2 ();
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dng_rect repeatingTile3 = RepeatingTile3 ();
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if (repeatingTile1.IsEmpty ())
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{
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repeatingTile1 = area;
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}
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if (repeatingTile2.IsEmpty ())
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{
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repeatingTile2 = area;
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}
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if (repeatingTile3.IsEmpty ())
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{
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repeatingTile3 = area;
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}
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uint32 repeatV = Min_uint32 (Min_uint32 (repeatingTile1.H (),
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repeatingTile2.H ()),
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repeatingTile3.H ());
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uint32 repeatH = Min_uint32 (Min_uint32 (repeatingTile1.W (),
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repeatingTile2.W ()),
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repeatingTile3.W ());
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dng_point maxTileSize = MaxTileSize ();
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dng_point tileSize;
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tileSize.v = Min_int32 (repeatV, maxTileSize.v);
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tileSize.h = Min_int32 (repeatH, maxTileSize.h);
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// What this is doing is, if the smallest repeating image tile is larger than the
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// maximum tile size, adjusting the tile size down so that the tiles are as small
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// as possible while still having the same number of tiles covering the
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// repeat area. This makes the areas more equal in size, making MP
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// algorithms work better.
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// The image core team did not understand this code, and disabled it.
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// Really stupid idea to turn off code you don't understand!
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// I'm undoing this removal, because I think the code is correct and useful.
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uint32 countV = (repeatV + tileSize.v - 1) / tileSize.v;
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uint32 countH = (repeatH + tileSize.h - 1) / tileSize.h;
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tileSize.v = (repeatV + countV - 1) / countV;
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tileSize.h = (repeatH + countH - 1) / countH;
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// Round up to unit cell size.
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dng_point unitCell = UnitCell ();
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if (unitCell.h != 1 || unitCell.v != 1)
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{
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tileSize.v = ((tileSize.v + unitCell.v - 1) / unitCell.v) * unitCell.v;
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tileSize.h = ((tileSize.h + unitCell.h - 1) / unitCell.h) * unitCell.h;
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}
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// But if that is larger than maximum tile size, round down to unit cell size.
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if (tileSize.v > maxTileSize.v)
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{
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tileSize.v = (maxTileSize.v / unitCell.v) * unitCell.v;
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}
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if (tileSize.h > maxTileSize.h)
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{
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tileSize.h = (maxTileSize.h / unitCell.h) * unitCell.h;
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}
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#if qImagecore
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if (gPrintTimings)
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{
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fprintf (stdout, "\nRender tile for below: %d x %d\n", (int32) tileSize.h, (int32) tileSize.v);
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}
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#endif
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return tileSize;
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}
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/*****************************************************************************/
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void dng_area_task::ProcessOnThread (uint32 threadIndex,
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const dng_rect &area,
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const dng_point &tileSize,
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dng_abort_sniffer *sniffer)
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{
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dng_rect repeatingTile1 = RepeatingTile1 ();
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dng_rect repeatingTile2 = RepeatingTile2 ();
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dng_rect repeatingTile3 = RepeatingTile3 ();
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if (repeatingTile1.IsEmpty ())
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{
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repeatingTile1 = area;
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}
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if (repeatingTile2.IsEmpty ())
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{
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repeatingTile2 = area;
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}
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if (repeatingTile3.IsEmpty ())
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{
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repeatingTile3 = area;
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}
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dng_rect tile1;
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dng_tile_iterator iter1 (repeatingTile3, area);
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while (iter1.GetOneTile (tile1))
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{
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dng_rect tile2;
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dng_tile_iterator iter2 (repeatingTile2, tile1);
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while (iter2.GetOneTile (tile2))
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{
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dng_rect tile3;
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dng_tile_iterator iter3 (repeatingTile1, tile2);
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while (iter3.GetOneTile (tile3))
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{
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dng_rect tile4;
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dng_tile_iterator iter4 (tileSize, tile3);
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while (iter4.GetOneTile (tile4))
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{
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dng_abort_sniffer::SniffForAbort (sniffer);
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Process (threadIndex, tile4, sniffer);
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}
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}
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}
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}
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}
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/*****************************************************************************/
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void dng_area_task::Perform (dng_area_task &task,
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const dng_rect &area,
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dng_memory_allocator *allocator,
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dng_abort_sniffer *sniffer)
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{
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dng_point tileSize (task.FindTileSize (area));
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task.Start (1, tileSize, allocator, sniffer);
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task.ProcessOnThread (0, area, tileSize, sniffer);
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task.Finish (1);
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}
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/*****************************************************************************/
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