image.h

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#ifndef IMAGE_H
#define IMAGE_H


#include <string>


#include "file.h"

/* main image class */
class Image
{
public:
  enum PixelFormat
  {
    RGB8,
    RGBA8,
    ALPHA8
  };

  Image (void) { rc = NULL; }

  Image (const std::string &file);

  Image (File f);

  Image (PixelFormat f, int w, int h, uchar *data)
  {
    rc = new int;
    /* TODO: fix this hack */
    *rc = 2;
    format = f;
    width = w;
    height = h;
    image = data;
  }

  Image (const Image &im)
  {
    rc = im.rc;
    (*rc)++;

    image = im.image;
    width = im.width;
    height = im.height;
    format = im.format;
  }

  Image& operator = (const Image &im)
  {
    if (rc != NULL)
      {
        (*rc)--;
        if (*rc == 0)
          {
            delete [] image;
            delete rc;
          }
      }

    rc = im.rc;
    (*rc)++;

    image = im.image;
    width = im.width;
    height = im.height;
    format = im.format;

    return (*this);
  }

  void Scale (const int nw, const int nh);

  void Convert (const PixelFormat f);

  uchar *Data (void) const { return image; }
  int Width (void) const { return width; }
  int Height (void) const { return height; }
  PixelFormat Format (void) const { return format; }

  ~Image (void)
  {
    if (rc != NULL)
      {
        (*rc)--;
        if (*rc == 0)
          {
            delete [] image;
            delete rc;
          }
      }
  }

private:
  /* Reference count.  */
  int *rc;

  /* Image data.  */
  uchar *image;

  /* Format.  */
  PixelFormat format;

  /* Dimensions.  */
  int width, height;

  /* Loads a Targa file.  */
  void ReadTarga (uchar *data, int len);
};

#endif

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