Mercurial > hg > orthanc
view Core/Images/ImageBuffer.cpp @ 2419:f51e9e852299
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 06 Oct 2017 17:26:15 +0200 |
parents | a3a65de1840f |
children | 878b59270859 |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017 Osimis, 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(PixelFormat format, unsigned int width, unsigned int height, bool forceMinimalPitch) : forceMinimalPitch_(forceMinimalPitch) { 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::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(); } }