draw.c

video motion detection of linux base

	},
	{
		'p',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,0,0},
			{1,2,1,0,0,0,0},
		}
	},
	{
		'q',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,0,1,1,1,1,0},
			{0,1,2,2,2,2,1},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,2,1},
			{0,0,1,1,1,2,1},
			{0,0,0,0,1,2,1}
		}
	},
	{
		'r',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,1,1,0,0},
			{1,2,1,2,2,1,0},
			{1,2,2,1,1,2,1},
			{1,2,1,0,0,1,0},
			{1,2,1,0,0,0,0},
			{0,1,0,0,0,0,0}
		}
	},
	{
		's',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,0,1,1,1,1,0},
			{0,1,2,2,2,2,1},
			{1,2,2,2,1,1,0},
			{0,1,1,2,2,2,1},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		't',
		{
			{0,0,0,1,0,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,1,2,2,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,0,1,2,1,0},
			{0,0,0,0,1,0,0}
		}
	},
	{
		'u',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,1,2,2,1},
			{0,1,2,2,1,2,1},
			{0,0,1,1,0,1,0}
		}
	},
	{
		'v',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,0,1,0,0,0}
		}
	},
	{
		'w',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,1,2,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,0,1,0,0}
		}
	},
	{
		'x',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,0,1,0,0},
			{1,2,1,1,2,1,0},
			{0,1,2,2,1,0,0},
			{0,1,2,2,1,0,0},
			{1,2,1,1,2,1,0},
			{0,1,0,0,1,0,0}
		}
	},
	{
		'y',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,1,2,1,0,0,0},
			{1,2,1,0,0,0,0}
		}
	},
	{
		'z',
		{
			{0,0,0,0,0,0,0},
			{0,0,0,0,0,0,0},
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{0,1,1,2,1,0,0},
			{0,1,2,1,1,0,0},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		'A',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,2,1},
			{1,2,1,1,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'B',
		{
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		'C',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,0,0,1,0},
			{1,2,1,0,0,1,0},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,0,0}
		}
	},
	{
		'D',
		{
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		'E',
		{
			{0,1,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{1,2,1,1,1,1,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,0,0},
			{1,2,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{0,1,1,1,1,1,0}
		}
	},
	{
		'F',
		{
			{0,1,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{1,2,1,1,1,1,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,0,0,0,0},
			{0,1,0,0,0,0,0}
		}
	},
	{
		'G',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,1,1,1,0},
			{1,2,1,2,2,2,1},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,0,0}
		}
	},
	{
		'H',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,2,1},
			{1,2,1,1,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'I',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,0,0}
		}
	},
	{
		'J',
		{
			{0,0,1,1,1,1,0},
			{0,1,2,2,2,2,1},
			{0,0,1,1,1,2,1},
			{0,0,0,0,1,2,1},
			{0,1,0,0,1,2,1},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,0,0}
		}
	},
	{
		'K',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,1,2,1,0},
			{1,2,1,2,1,0,0},
			{1,2,2,2,1,0,0},
			{1,2,1,1,2,1,0},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'L',
		{
			{0,1,0,0,0,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		'M',
		{
			{0,1,1,0,1,1,0},
			{1,2,2,1,2,2,1},
			{1,2,1,2,1,2,1},
			{1,2,1,1,1,2,},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'N',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,2,1,1,2,1},
			{1,2,1,2,1,2,1},
			{1,2,1,1,2,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'O',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,0,0}
		}
	},
	{
		'P',
		{
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,0,0},
			{1,2,1,0,0,0,0},
			{1,2,1,0,0,0,0},
			{0,1,0,0,0,0,0}
		}
	},
	{
		'Q',
		{
			{0,0,1,1,1,0,0},
			{0,1,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,1,2,1,2,1},
			{1,2,1,1,2,1,0},
			{0,1,2,2,1,2,1},
			{0,0,1,1,0,1,0}
		}
	},
	{
		'R',
		{
			{0,1,1,1,1,0,0},
			{1,2,2,2,2,1,0},
			{1,2,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{1,2,1,2,1,0,0},
			{1,2,1,1,2,1,0},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'S',
		{
			{0,0,1,1,1,1,0},
			{0,1,2,2,2,2,1},
			{1,2,1,1,1,1,0},
			{0,1,2,2,2,1,0},
			{0,0,1,1,1,2,1},
			{0,1,1,1,1,2,1},
			{1,2,2,2,2,1,0},
			{0,1,1,1,1,0,0}
		}
	},
	{
		'T',
		{
			{0,1,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{0,1,1,2,1,1,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,0,1,0,0,0}
		}
	},
	{
		'U',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{0,1,2,2,2,2,1},
			{0,0,1,1,1,1,0}
		}
	},
	{
		'V',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,0,1,0,0,0}
		}
	},
	{
		'W',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{1,2,1,0,1,2,1},
			{1,2,1,1,1,2,1},
			{1,2,1,2,1,2,1},
			{1,2,1,2,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,0,1,0,0}
		}
	},
	{
		'X',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,1,2,1,2,1,0},
			{1,2,1,0,1,2,1},
			{0,1,0,0,0,1,0}
		}
	},
	{
		'Y',
		{
			{0,1,0,0,0,1,0},
			{1,2,1,0,1,2,1},
			{0,1,2,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,1,2,1,0,0},
			{0,0,0,1,0,0,0}
		}
	},
	{
		'Z',
		{
			{0,1,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{0,1,1,1,2,1,0},
			{0,0,1,2,1,0,0},
			{0,1,2,1,0,0,0},
			{1,2,1,1,1,1,0},
			{1,2,2,2,2,2,1},
			{0,1,1,1,1,1,0}
		}
	}
};

struct big_char big_table[sizeof(draw_table) / sizeof(struct draw_char)];

#define NEWLINE "\\n"

static int draw_textn (unsigned char *image, int startx, int starty, int width, char *text, int len, int factor)
{
	int pos, x, y, line_offset, next_char_offs;
	unsigned char *image_ptr, *char_ptr, **char_arr_ptr;

	if (startx>width/2)
		startx -= len*(6*(factor+1));

	if (startx < 0)
		startx = 0;
	
	if (startx+len*6*(factor+1) >= width)
		len = (width-startx-1)/(6*(factor+1));
	
	line_offset = width - 7*(factor+1);
	next_char_offs = width*8*(factor+1) - 6*(factor+1);
	
	image_ptr = image + startx + starty*width;

	char_arr_ptr = factor ? big_char_arr_ptr : small_char_arr_ptr;
	
	for (pos = 0; pos < len; pos++) {
		char_ptr = char_arr_ptr[(int)text[pos]];
		for (y=8*(factor+1); y--;) {
			for (x=7*(factor+1); x--;) {
				switch(*char_ptr) {
					case 1:
						*image_ptr = 0;
						break;
					case 2:
						*image_ptr = 255;
						break;
					default:
						break;
				}
				image_ptr++;
				char_ptr++;
			}
			image_ptr += line_offset;
		}
		image_ptr -= next_char_offs;
	}
	return 0;
}

int draw_text (unsigned char *image, int startx, int starty, int width, char *text, int factor)
{
	int num_nl = 0;
	char *end, *begin;
	const int line_space = (factor + 1) * 9;
	
	/* Count the number of newlines in "text" so we scroll it up the image */
	end = text;
	while ((end = strstr(end, NEWLINE))) {
		num_nl++;
		end += sizeof(NEWLINE)-1;
	}
	starty -= line_space * num_nl;
	
	begin = end = text;
	while ((end = strstr(end, NEWLINE))) {
		int len = end-begin;
		draw_textn(image, startx, starty, width, begin, len, factor);
		end += sizeof(NEWLINE)-1;
		begin = end;
		starty += line_space;
	}
	draw_textn(image, startx, starty, width, begin, strlen(begin), factor);
	return 0;
}

int initialize_chars(void)
{
	unsigned int i=0, x, y;
	
	/* Fill the structure 'big_table' with double sized characters. */
	while(draw_table[i].ascii) {
		big_table[i].ascii = draw_table[i].ascii;
		for(x=0; x < 14; x++) {
			for(y=0; y < 16; y++) {
				big_table[i].pix[y][x] = draw_table[i].pix[y/2][x/2];
			}
		}
		i++;
	}

	/* first init all char ptr's to a space character */
	for (i=0; i < ASCII_MAX; i++) {
		small_char_arr_ptr[i]=&draw_table[0].pix[0][0];
		big_char_arr_ptr[i]=&big_table[0].pix[0][0];
	}
			
	/* build [big_]char_arr_ptr table to point to each available ascii */
	for (i=0; i < sizeof(draw_table) / sizeof(struct draw_char); i++) {
		small_char_arr_ptr[(int)draw_table[i].ascii]=&draw_table[i].pix[0][0];
		big_char_arr_ptr[(int)draw_table[i].ascii]=&big_table[i].pix[0][0];
	}
	return 0;
}