tools/bmp_logo.c


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#include "compiler.h"

enum {
	MODE_GEN_INFO,
	MODE_GEN_DATA,
	MODE_GEN_BMP
};

typedef struct bitmap_s {		/* bitmap description */
	uint16_t width;
	uint16_t height;
	uint8_t	palette[256*3];
	uint8_t	*data;
} bitmap_t;

#define DEFAULT_CMAP_SIZE	16	/* size of default color map	*/

void usage(const char *prog)
{
	fprintf(stderr, "Usage: %s [--gen-info|--gen-data|--gen-bmp] file\n",
		prog);
}

/*
 * Neutralize little endians.
 */
uint16_t le_short(uint16_t x)
{
    uint16_t val;
    uint8_t *p = (uint8_t *)(&x);

    val =  (*p++ & 0xff) << 0;
    val |= (*p & 0xff) << 8;

    return val;
}

void skip_bytes (FILE *fp, int n)
{
	while (n-- > 0)
		fgetc (fp);
}

__attribute__ ((__noreturn__))
int error (char * msg, FILE *fp)
{
	fprintf (stderr, "ERROR: %s\n", msg);

	fclose (fp);

	exit (EXIT_FAILURE);
}

void gen_info(bitmap_t *b, uint16_t n_colors)
{
	printf("/*\n"
		" * Automatically generated by \"tools/bmp_logo\"\n"
		" *\n"
		" * DO NOT EDIT\n"
		" *\n"
		" */\n\n\n"
		"#ifndef __BMP_LOGO_H__\n"
		"#define __BMP_LOGO_H__\n\n"
		"#define BMP_LOGO_WIDTH\t\t%d\n"
		"#define BMP_LOGO_HEIGHT\t\t%d\n"
		"#define BMP_LOGO_COLORS\t\t%d\n"
		"#define BMP_LOGO_OFFSET\t\t%d\n\n"
		"extern unsigned short bmp_logo_palette[];\n"
		"extern unsigned char bmp_logo_bitmap[];\n\n"