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/**
* Orthanc - A Lightweight, RESTful DICOM Store
* Copyright (C) 2012-2014 Medical Physics Department, CHU 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();
}
}
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