#include <graphics.h>
#include <alloc.h>
#include <stdlib.h>
#include <stdio.h>
#include <dos.h>


struct BMP_HEADER_TYPE  {
	int  image_format_type;
	long image_file_size;
	int  image_reserved1;
	int  image_reserved2;
	long image_bitmap_offset;
	long image_header_size;
	long image_width;
	long image_height;
	int  image_planes;
	int  image_pixel_per_bit;
	long image_compress;
	long image_bitmap_image_size;
	long image_horizon_resolution;
	long image_vertical_resolution;
	long image_used_color;
	long image_pallette;
} BMP_HEADER;

struct BMP_PALETTE {
	 unsigned char  r, g ,b;
} pal[16];


GRAPH_INITIAL()
{
			int 	graphdriver = DETECT, graphmode;
			graphdriver = DETECT;
			detectgraph(&graphdriver,&graphmode);
			initgraph(&graphdriver, &graphmode,"");
}


LOAD_BMP_FILE(char *file_name)
{
	long          i, j;
	char            ch;
	int              k;
	FILE  *fp;
	struct palettetype  ppal;

	getpalette(&ppal);

	if ((fp = fopen(file_name, "rb"))== NULL)
	{
	    printf("Cannot Open File \"%s\" !!\a",file_name);exit(0);
	}

	fread(&BMP_HEADER,sizeof(BMP_HEADER),1,fp);
	printf("format type : %d  %d\n", BMP_HEADER.image_format_type,0x4d42);
	printf("file size   : %ld\n",BMP_HEADER.image_file_size);
	printf("reserved 1  : %d\n",BMP_HEADER.image_reserved1);
	printf("reserved 2  : %d\n",BMP_HEADER.image_reserved2);
	printf("bitmap_offset : %ld\n",BMP_HEADER.image_bitmap_offset);
	printf("header size : %ld\n",BMP_HEADER.image_header_size);
	printf("image width : %ld\n",BMP_HEADER.image_width);
	printf("image height : %ld\n",BMP_HEADER.image_height);
	printf("image planes : %d\n", BMP_HEADER.image_planes);
	printf("image pixel per but : %d\n",BMP_HEADER.image_pixel_per_bit);
	printf("image compress : %ld\n",BMP_HEADER.image_compress);
	printf("imgage bitmap image size : %ld\n",BMP_HEADER.image_bitmap_image_size);
	printf("horizon resolution : %ld\n",BMP_HEADER.image_horizon_resolution);
	printf("vertical Resolution : %ld\n", BMP_HEADER.image_vertical_resolution);
	printf("use color : %ld\n", BMP_HEADER.image_used_color);
	printf("image pallette : %ld\n",BMP_HEADER.image_pallette);

	printf("\n\n\nPress Anykey !!");
	getch();


	fread(&pal,sizeof(pal),1,fp);

	for(k=0;k<16;k++)
	{
	   pal[k].r = pal[k].r>>2;
	   pal[k].g = pal[k].g>>2;
	   pal[k].b = pal[k].b>>2;
	   setrgbpalette(ppal.colors[k], pal[k].b, pal[k].g, pal[k].r);
	}

	for(j=BMP_HEADER.image_height-1;j>=0;j--)
	   for(i=0;i<BMP_HEADER.image_width;i+=2)
	   {
		ch=fgetc(fp);
		putpixel(i,j,(ch >> 4) & 15);
		putpixel(i+1,j,ch & 15);
	   }
	fclose(fp);
}

main()
{
	GRAPH_INITIAL();
	LOAD_BMP_FILE("d:\\tc20\\source\\tmp1.bmp");
	getch();
	closegraph();
}