Mercurial > hg > orthanc-webviewer
diff Orthanc/Core/ImageFormats/ImageBuffer.cpp @ 25:15acbf5e7545
refactoring
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 02 Jun 2015 11:16:30 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Orthanc/Core/ImageFormats/ImageBuffer.cpp Tue Jun 02 11:16:30 2015 +0200 @@ -0,0 +1,192 @@ +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2015 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 General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * In addition, as a special exception, the copyright holders of this + * program give permission to link the code of its release with the + * OpenSSL project's "OpenSSL" library (or with modified versions of it + * that use the same license as the "OpenSSL" library), and distribute + * the linked executables. You must obey the GNU General Public License + * in all respects for all of the code used other than "OpenSSL". If you + * modify file(s) with this exception, you may extend this exception to + * your version of the file(s), but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from your + * version. If you delete this exception statement from all source files + * in the program, then also delete it here. + * + * 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "../PrecompiledHeaders.h" +#include "ImageBuffer.h" + +#include "../OrthancException.h" + +#include <stdio.h> +#include <stdlib.h> + +namespace Orthanc +{ + void ImageBuffer::Allocate() + { + if (changed_) + { + Deallocate(); + + /* + if (forceMinimalPitch_) + { + TODO: Align pitch and memory buffer to optimal size for SIMD. + } + */ + + pitch_ = GetBytesPerPixel() * width_; + size_t size = pitch_ * height_; + + if (size == 0) + { + buffer_ = NULL; + } + else + { + buffer_ = malloc(size); + if (buffer_ == NULL) + { + throw OrthancException(ErrorCode_NotEnoughMemory); + } + } + + changed_ = false; + } + } + + + void ImageBuffer::Deallocate() + { + if (buffer_ != NULL) + { + free(buffer_); + buffer_ = NULL; + changed_ = true; + } + } + + + ImageBuffer::ImageBuffer(unsigned int width, + unsigned int height, + PixelFormat format) + { + Initialize(); + SetWidth(width); + SetHeight(height); + SetFormat(format); + } + + + void ImageBuffer::Initialize() + { + changed_ = false; + forceMinimalPitch_ = true; + format_ = PixelFormat_Grayscale8; + width_ = 0; + height_ = 0; + pitch_ = 0; + buffer_ = NULL; + } + + + void ImageBuffer::SetFormat(PixelFormat format) + { + if (format != format_) + { + changed_ = true; + format_ = format; + } + } + + + void ImageBuffer::SetWidth(unsigned int width) + { + if (width != width_) + { + changed_ = true; + width_ = width; + } + } + + + void ImageBuffer::SetHeight(unsigned int height) + { + if (height != height_) + { + changed_ = true; + height_ = height; + } + } + + + ImageAccessor ImageBuffer::GetAccessor() + { + Allocate(); + + ImageAccessor accessor; + accessor.AssignWritable(format_, width_, height_, pitch_, buffer_); + return accessor; + } + + + ImageAccessor ImageBuffer::GetConstAccessor() + { + Allocate(); + + ImageAccessor accessor; + accessor.AssignReadOnly(format_, width_, height_, pitch_, buffer_); + return accessor; + } + + + void ImageBuffer::SetMinimalPitchForced(bool force) + { + if (force != forceMinimalPitch_) + { + changed_ = true; + forceMinimalPitch_ = force; + } + } + + + void ImageBuffer::AcquireOwnership(ImageBuffer& other) + { + // Remove the content of the current image + Deallocate(); + + // Force the allocation of the other image (if not already + // allocated) + other.Allocate(); + + // Transfer the content of the other image + changed_ = false; + forceMinimalPitch_ = other.forceMinimalPitch_; + format_ = other.format_; + width_ = other.width_; + height_ = other.height_; + pitch_ = other.pitch_; + buffer_ = other.buffer_; + + // Force the reinitialization of the other image + other.Initialize(); + } +}