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/*
* gbsplay is a Gameboy sound player
*
* 2003-2025 (C) by Tobias Diedrich <ranma+gbsplay@tdiedrich.de>
* Christian Garbs <mitch@cgarbs.de>
*
* Licensed under GNU GPL v1 or, at your option, any later version.
*/
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "common.h"
#include "gbhw.h"
#include "gbcpu.h"
#include "libgbs.h"
#include "gbs_internal.h"
/* global variables */
uint8_t logo_data[0x30];
void usage(long exitcode)
{
FILE *out = exitcode ? stderr : stdout;
fputs(_("Usage: gbs2gb [OPTION]... [--] GBS-FILE OUT-FILE\n"
"\n"
"Available options are:\n"
" -t rom template\n"
" -h display this help and exit\n"
" -V print version and exit\n"
" -- end options, next argument is GBS-FILE\n"),
out);
exit(exitcode);
}
void version(void)
{
(void)puts("gbs2gb " GBS_VERSION);
exit(EXIT_SUCCESS);
}
void read_rom_template(const char* const name)
{
FILE *f = fopen(name, "rb");
uint8_t hdr[0x200];
if (!f) {
fprintf(stderr, _("Could not open ROM template: %s"), name);
exit(EXIT_FAILURE);
}
if (fread(hdr, 1, sizeof(hdr), f) != sizeof(hdr)) {
fclose(f);
fprintf(stderr, _("Could not open ROM template: %s"), name);
exit(EXIT_FAILURE);
}
memcpy(logo_data, &hdr[0x104], 0x30);
fclose(f);
}
void parseopts(int *argc, char ***argv)
{
long res;
while ((res = getopt(*argc, *argv, "t:hV")) != -1) {
switch (res) {
default:
usage(EXIT_FAILURE);
break;
case 't':
read_rom_template(optarg);
break;
case 'h':
usage(EXIT_SUCCESS);
break;
case 'V':
version();
break;
}
}
*argc -= optind;
*argv += optind;
}
void read_default_template()
{
const uint8_t *bootrom = gbs_internal_api.get_bootrom();
if (!bootrom) {
return;
}
memcpy(logo_data, &bootrom[0xa8], 0x30);
}
int main(int argc, char **argv)
{
struct gbs *gbs;
FILE *out;
assert_internal_api_valid();
i18n_init();
read_default_template();
parseopts(&argc, &argv);
if (argc < 2) {
usage(EXIT_FAILURE);
}
if (logo_data[0] == 0) {
fputs(_("ROM template data not found!\n"), stderr);
usage(EXIT_FAILURE);
}
if ((gbs = gbs_open(argv[0])) == NULL)
exit(EXIT_FAILURE);
out = fopen(argv[1], "wb");
if (!out) {
fprintf(stderr, _("Could not open output file: %s"), argv[1]);
exit(EXIT_FAILURE);
}
gbs_internal_api.write_rom(gbs, out, logo_data);
gbs_close(gbs);
fclose(out);
return 0;
}
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