From: notaz <notasas@gmail.com>
Date: Sun, 15 Mar 2009 14:55:22 +0000 (+0000)
Subject: sms conversion tool
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=megadrive.git;a=commitdiff_plain;h=262a16f4f5d8e1aa1bf24a15ffd6e017d8e59622

sms conversion tool
---

diff --git a/mx/linux/sms2mx.c b/mx/linux/sms2mx.c
new file mode 100644
index 0000000..2dd4292
--- /dev/null
+++ b/mx/linux/sms2mx.c
@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <string.h>
+
+#define IN_SIZE 0x8000
+static unsigned char buff[0x400000], buff_in[IN_SIZE];
+
+int main(int argc, char *argv[])
+{
+	FILE *fi, *fo;
+	int size, bsize;
+	int i, o;
+
+	if (argc != 3) {
+		fprintf(stderr, "usage:\n%s <sms ROM> <mx img>\n", argv[0]);
+		return 1;
+	}
+
+	fi = fopen(argv[1], "rb");
+	if (fi == NULL) {
+		fprintf(stderr, "can't open: %s\n", argv[1]);
+		return 1;
+	}
+
+	fo = fopen(argv[2], "wb");
+	if (fo == NULL) {
+		fprintf(stderr, "can't open: %s\n", argv[2]);
+		return 1;
+	}
+
+	fseek(fi, 0, SEEK_END);
+	size = ftell(fi);
+	fseek(fi, 0, SEEK_SET);
+
+	if (size > IN_SIZE) {
+		fprintf(stderr, "ROMs > 32k won't work\n");
+		size = IN_SIZE;
+	}
+
+	if (fread(buff_in, 1, size, fi) != size)
+		fprintf(stderr, "failed to read %s\n", argv[1]);
+
+	memset(buff, 0, sizeof(buff));
+
+	for (bsize = 1; bsize < size; bsize <<= 1)
+		;
+
+	for (i = 0, o = 0; o < sizeof(buff); i = (i + 1) & (bsize - 1), o += 2)
+		buff[o] = buff[o+1] = buff_in[i];
+
+	if (fwrite(buff, 1, 0x400000, fo) != 0x400000)
+		fprintf(stderr, "failed to write to %s\n", argv[2]);
+	fclose(fi);
+	fclose(fo);
+
+	return 0;
+}
+