view miscutil/fc-rgbconv.c @ 505:7bf0d909c87e

fc-loadtool flash ID check: change of reset after the check logic This change only affects those flash configurations that have ID checks enabled. The logic for resetting the flash after the ID check has been changed as follows: 1) If the check fails, we return without attempting to reset the flash. 2) If the check is successful, we reset the flash using the configured method (could be AMD or Intel or Intel W30) instead of always doing an AMD flash reset as the original code did.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 27 May 2019 19:58:01 +0000
parents e7502631a0f9
children
line wrap: on
line source

/*
 * This utility is an aid for phone UI development.  The color LCDs in the
 * phones targeted by FreeCalypso implement 16-bit color in RGB 5:6:5 format,
 * but these 16-bit color words are not particularly intuitive in raw hex form.
 * In contrast, a 24-bit RGB 8:8:8 color given in RRGGBB hex form is quite
 * intuitive, at least to those who understand RGB.
 *
 * This utility performs the conversion.  It takes a single command line
 * argument that must be either 4 or 6 hex digits.  If the argument is 4 hex
 * digits, it is interpreted as RGB 5:6:5 and converted into RGB 8:8:8.
 * If the argument is 6 hex digits, it is interpreted as RGB 8:8:8 and
 * converted into RGB 5:6:5.  The output of the conversion is emitted on
 * stdout as 4 or 6 hex digits.
 */

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

is_arg_all_hex(str)
	char *str;
{
	char *cp;
	int c;

	for (cp = str; c = *cp++; )
		if (!isxdigit(c))
			return(0);
	return(1);
}

convert_565_to_888(in)
	unsigned in;
{
	unsigned r, g, b;

	r = in >> 11;
	g = (in >> 5) & 0x3F;
	b = in & 0x1F;
	printf("%02X%02X%02X\n", r << 3, g << 2, b << 3);
}

convert_888_to_565(in)
	unsigned in;
{
	unsigned r, g, b;

	r = (in >> 16) >> 3;
	g = ((in >> 8) & 0xFF) >> 2;
	b = (in & 0xFF) >> 3;
	printf("%04X\n", (r << 11) | (g << 5) | b);
}

main(argc, argv)
	char **argv;
{
	unsigned in;

	if (argc != 2) {
usage:		fprintf(stderr,
		    "please specify one 4-digit or 6-digit hex RGB value\n");
		exit(1);
	}
	if (!is_arg_all_hex(argv[1]))
		goto usage;
	in = strtoul(argv[1], 0, 16);
	switch (strlen(argv[1])) {
	case 4:
		convert_565_to_888(in);
		exit(0);
	case 6:
		convert_888_to_565(in);
		exit(0);
	}
	goto usage;
}