Image.hpp

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#pragma once
 
#include <string>
#include <memory>
#include <vector>
#include "Logger.hpp"
#include <png.h>
#include "Math.hpp"
 
namespace small3d {
 
  class Image {
  private:
 
    struct memoryDataAndPos_ {
      std::vector<char> data;
      uint64_t pos = 0;
      template <class Archive>
      void serialize(Archive& archive) {
        archive(data, pos);
      }
    };
 
    memoryDataAndPos_ memoryDataAndPos;
 
    unsigned long width = 0, height = 0;
    std::vector<uint8_t> imageData;
    unsigned long imageDataSize = 0;
    void load(const std::string& fileLocation, std::vector<char>& data);
    static void readDataFromMemory(png_structp png_ptr, png_bytep outBytes,
      png_size_t byteCountToRead);
 
  public:
 
    static const std::string NOTRGBA;
 
    explicit Image(const std::string& fileLocation = "");
 
    explicit Image(std::vector<char>& data);
 
    ~Image() = default;
 
    void toColour(Vec4 colour);
 
    unsigned long getWidth() const;
 
    unsigned long getHeight() const;
 
    unsigned long getByteSize() const;
 
    const uint8_t* getData() const;
 
    template <class Archive>
    void serialize(Archive& archive) {
      archive(memoryDataAndPos, width, height, imageData, imageDataSize);
    }
 
  };
 
}