#ifndef PCX_H
#define PCX_H

#define	NO_ERROR 0
#define FILE_NOT_OPENED 1
#define INSUFFICIENT_MEMORY 2
#define TOO_MANY_ARGUMENTS 3

struct pcx_header {
	char manufacturer;    // Always set to 0
	char version;         // Always 5 for 256-color files
	char encoding;        // Always set to 1
	char bits_per_pixel;  // Should be 8 for 256-color files
	int  xmin,ymin;       // Coordinates for top left corner
	int  xmax,ymax;       // Width and height of image
	int  hres;            // Horizontal resolution of image
	int  vres;            // Vertical resolution of image
	char palette16[48];   // EGA palette; not used for
												//  256-color files
	char reserved;        // Reserved for future use
	char color_planes;    // Color planes
	int  bytes_per_line;  // Number of bytes in 1 line of
												//  pixels
	int  palette_type;    // Should be 2 for color palette
	char filler[58];      // Nothing but junk
};



// Class for loading 256-color VGA PCX files
class Pcx
{
private:
	// Private functions and variables for class Pcx
	int infile;  // File handle for PCX file to be loaded
	// Bitmap loading function:
	int load_image();
	// Palette loading function:
	void load_palette();

protected:
	pcx_header header;    // Structure for holding the PCX
												//  header
	unsigned char *image; 	// Pointer to a buffer holding
													//  the 64000-byte bitmap
	unsigned char palette[3*256]; // Array holding the 768-
																//  byte palette
	public:
		// Public functions for class Pcx
	Pcx() // set initial pointers to 0
	{
		image = 0;// set initial pointers to 0
	}

	Pcx(char far *filename)
	{
		image = 0; // set initial pointers to 0
		Load(filename);
	}
	~Pcx();
	// Function to load PCX data:
	int Load(char far *filename);
	// External access to image and palette:
	unsigned char *Image()
		{ return image; }
	unsigned char *Palette()
		{ return palette; }
};

#endif