Mercurial > hg > orthanc-wsi
diff Framework/Inputs/DecodedTiledPyramid.cpp @ 0:4a7a53257c7d
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 22 Oct 2016 21:48:33 +0200 |
parents | |
children | 7a88c614be04 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Inputs/DecodedTiledPyramid.cpp Sat Oct 22 21:48:33 2016 +0200 @@ -0,0 +1,117 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "DecodedTiledPyramid.h" + +#include "../ImageToolbox.h" + +#include <memory> +#include <cassert> + +namespace OrthancWSI +{ + DecodedTiledPyramid::DecodedTiledPyramid() + { + SetBackgroundColor(255, 255, 255); + } + + + void DecodedTiledPyramid::SetBackgroundColor(uint8_t red, + uint8_t green, + uint8_t blue) + { + backgroundColor_[0] = red; + backgroundColor_[1] = green; + backgroundColor_[2] = blue; + } + + + void DecodedTiledPyramid::GetBackgroundColor(uint8_t& red, + uint8_t& green, + uint8_t& blue) const + { + red = backgroundColor_[0]; + green = backgroundColor_[1]; + blue = backgroundColor_[2]; + } + + + Orthanc::ImageAccessor* DecodedTiledPyramid::DecodeTile(unsigned int level, + unsigned int tileX, + unsigned int tileY) + { + unsigned int x = tileX * GetTileWidth(); + unsigned int y = tileY * GetTileHeight(); + + std::auto_ptr<Orthanc::ImageAccessor> tile + (ImageToolbox::Allocate(GetPixelFormat(), GetTileWidth(), GetTileHeight())); + + if (x >= GetLevelWidth(level) || + y >= GetLevelHeight(level)) // (*) + { + ImageToolbox::Set(*tile, backgroundColor_[0], backgroundColor_[1], backgroundColor_[2]); + return tile.release(); + } + + bool fit = true; + unsigned int regionWidth; + if (x + GetTileWidth() <= GetLevelWidth(level)) + { + regionWidth = GetTileWidth(); + } + else + { + assert(GetLevelWidth(level) >= x); // This results from (*) + regionWidth = GetLevelWidth(level) - x; + fit = false; + } + + unsigned int regionHeight; + if (y + GetTileHeight() <= GetLevelHeight(level)) + { + regionHeight = GetTileHeight(); + } + else + { + assert(GetLevelHeight(level) >= y); // This results from (*) + regionHeight = GetLevelHeight(level) - y; + fit = false; + } + + if (fit) + { + // The tile entirely lies inside the image + ReadRegion(*tile, level, x, y); + } + else + { + // The tile exceeds the size of image, decode it to a temporary buffer + std::auto_ptr<Orthanc::ImageAccessor> cropped + (ImageToolbox::Allocate(GetPixelFormat(), regionWidth, regionHeight)); + ReadRegion(*cropped, level, x, y); + + // Create a white tile, and fill it with the cropped content + ImageToolbox::Set(*tile, backgroundColor_[0], backgroundColor_[1], backgroundColor_[2]); + ImageToolbox::Embed(*tile, *cropped, 0, 0); + } + + return tile.release(); + } +}