Image.cpp

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/*
 * 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 2
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
/*
 * This file is based on a similar file from the NVIDIA texture tools
 * (http://nvidia-texture-tools.googlecode.com/)
 *
 * Original license from NVIDIA follows.
 */
 
/* This code is in the public domain -- <castanyo@yahoo.es>. */
 
#include <Color.h>
#include <Image.h>
 
#include <cstdio> /* printf */
 
Image::Image() : m_width(0), m_height(0), m_format(Format_RGB), m_data(nullptr)
{
}
 
Image::~Image()
{
  free();
}
 
void Image::allocate(uint w, uint h)
{
  free();
  m_width = w;
  m_height = h;
  m_data = new Color32[w * h];
}
 
void Image::free()
{
  delete[] m_data;
  m_data = nullptr;
}
 
uint Image::width() const
{
  return m_width;
}
 
uint Image::height() const
{
  return m_height;
}
 
const Color32 *Image::scanline(uint h) const
{
  if (h >= m_height) {
    printf("DDS: scanline beyond dimensions of image\n");
    return m_data;
  }
  return m_data + h * m_width;
}
 
Color32 *Image::scanline(uint h)
{
  if (h >= m_height) {
    printf("DDS: scanline beyond dimensions of image\n");
    return m_data;
  }
  return m_data + h * m_width;
}
 
const Color32 *Image::pixels() const
{
  return m_data;
}
 
Color32 *Image::pixels()
{
  return m_data;
}
 
const Color32 &Image::pixel(uint idx) const
{
  if (idx >= m_width * m_height) {
    printf("DDS: pixel beyond dimensions of image\n");
    return m_data[0];
  }
  return m_data[idx];
}
 
Color32 &Image::pixel(uint idx)
{
  if (idx >= m_width * m_height) {
    printf("DDS: pixel beyond dimensions of image\n");
    return m_data[0];
  }
  return m_data[idx];
}
 
Image::Format Image::format() const
{
  return m_format;
}
 
void Image::setFormat(Image::Format f)
{
  m_format = f;
}