diff options
Diffstat (limited to 'gpr/source/lib/dng_sdk/dng_tile_iterator.cpp')
| -rw-r--r-- | gpr/source/lib/dng_sdk/dng_tile_iterator.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/gpr/source/lib/dng_sdk/dng_tile_iterator.cpp b/gpr/source/lib/dng_sdk/dng_tile_iterator.cpp new file mode 100644 index 0000000..b91a9dc --- /dev/null +++ b/gpr/source/lib/dng_sdk/dng_tile_iterator.cpp @@ -0,0 +1,199 @@ +/*****************************************************************************/
+// Copyright 2006 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_tile_iterator.cpp#1 $ */
+/* $DateTime: 2012/05/30 13:28:51 $ */
+/* $Change: 832332 $ */
+/* $Author: tknoll $ */
+
+/*****************************************************************************/
+
+#include "dng_tile_iterator.h"
+
+#include "dng_exceptions.h"
+#include "dng_image.h"
+#include "dng_pixel_buffer.h"
+#include "dng_tag_types.h"
+#include "dng_utils.h"
+
+/*****************************************************************************/
+
+dng_tile_iterator::dng_tile_iterator (const dng_image &image,
+ 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)
+
+ {
+
+ Initialize (image.RepeatingTile (),
+ area & image.Bounds ());
+
+ }
+
+/*****************************************************************************/
+
+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);
+
+ }
+
+/*****************************************************************************/
+
+dng_tile_iterator::dng_tile_iterator (const dng_rect &tile,
+ 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)
+
+ {
+
+ Initialize (tile,
+ area);
+
+ }
+
+/*****************************************************************************/
+
+void dng_tile_iterator::Initialize (const dng_rect &tile,
+ const dng_rect &area)
+ {
+
+ fArea = area;
+
+ if (area.IsEmpty ())
+ {
+
+ fVerticalPage = 0;
+ fBottomPage = -1;
+
+ return;
+
+ }
+
+ int32 vOffset = tile.t;
+ int32 hOffset = tile.l;
+
+ int32 tileHeight = tile.b - vOffset;
+ int32 tileWidth = tile.r - hOffset;
+
+ fTileHeight = tileHeight;
+ fTileWidth = tileWidth;
+
+ fLeftPage = (fArea.l - hOffset ) / tileWidth;
+ fRightPage = (fArea.r - hOffset - 1) / tileWidth;
+
+ fHorizontalPage = fLeftPage;
+
+ fTopPage = (fArea.t - vOffset ) / tileHeight;
+ fBottomPage = (fArea.b - vOffset - 1) / tileHeight;
+
+ fVerticalPage = fTopPage;
+
+ fTileLeft = fHorizontalPage * tileWidth + hOffset;
+ fTileTop = fVerticalPage * tileHeight + vOffset;
+
+ fRowLeft = fTileLeft;
+
+ }
+
+/*****************************************************************************/
+
+bool dng_tile_iterator::GetOneTile (dng_rect &tile)
+ {
+
+ if (fVerticalPage > fBottomPage)
+ {
+ return false;
+ }
+
+ if (fVerticalPage > fTopPage)
+ tile.t = fTileTop;
+ else
+ tile.t = fArea.t;
+
+ if (fVerticalPage < fBottomPage)
+ tile.b = fTileTop + fTileHeight;
+ else
+ tile.b = fArea.b;
+
+ if (fHorizontalPage > fLeftPage)
+ tile.l = fTileLeft;
+ else
+ tile.l = fArea.l;
+
+ if (fHorizontalPage < fRightPage)
+ tile.r = fTileLeft + fTileWidth;
+ else
+ tile.r = fArea.r;
+
+ if (fHorizontalPage < fRightPage)
+ {
+ fHorizontalPage++;
+ fTileLeft += fTileWidth;
+ }
+
+ else
+ {
+
+ fVerticalPage++;
+ fTileTop += fTileHeight;
+
+ fHorizontalPage = fLeftPage;
+ fTileLeft = fRowLeft;
+
+ }
+
+ return true;
+
+ }
+
+/*****************************************************************************/
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