ShImage.hpp

// Sh: A GPU metaprogramming language.
//
// Copyright (c) 2003 University of Waterloo Computer Graphics Laboratory
// Project administrator: Michael D. McCool
// Authors: Zheng Qin, Stefanus Du Toit, Kevin Moule, Tiberiu S. Popa,
//          Michael D. McCool
// 
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// 
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 
// 1. The origin of this software must not be misrepresented; you must
// not claim that you wrote the original software. If you use this
// software in a product, an acknowledgment in the product documentation
// would be appreciated but is not required.
// 
// 2. Altered source versions must be plainly marked as such, and must
// not be misrepresented as being the original software.
// 
// 3. This notice may not be removed or altered from any source
// distribution.
#ifndef SHIMAGE_HPP
#define SHIMAGE_HPP

#include <string>
#include "ShDllExport.hpp"
#include "ShRefCount.hpp"
#include "ShMemory.hpp"

namespace SH {

class
SH_DLLEXPORT ShImage : public ShRefCountable {
public:
  ShImage(); 
  ShImage(int width, int height, int depth); 

  ShImage(const ShImage& other); 

  ~ShImage();

  ShImage& operator=(const ShImage& other); 


  int width() const; 
  int height() const; 
  int elements() const; 


  float operator()(int x, int y, int i) const; 


  float& operator()(int x, int y, int i);  




  void loadPng(const std::string& filename); 


  void savePng(const std::string& filename, int inverse_alpha=0);

  
  void savePng16(const std::string& filename, int inverse_alpha=0);
 
  ShImage getNormalImage();

  const float* data() const;
  float* data();
  
  void dirty();
  ShMemoryPtr memory();
  ShPointer<const ShMemory> memory() const;
  
private:
  int m_width, m_height;
  int m_elements;
  ShHostMemoryPtr m_memory;
};

}

#endif

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