mqascan: allow multiple input files

mqascan.c

@@ -319,15 +319,60 @@ static void write_metadata(const char *file)
 	}
 
 	fclose(md);
+
+	free(metadata);
+	metadata = NULL;
+	metadata_frags = 0;
 }
 
-int main(int argc, char **argv)
+static int scan_file(const char *name, int start)
 {
 	SNDFILE *file;
 	SF_INFO fmt;
+
+	bitnum = 0;
+	abspos = 0;
+
+	memset(&fmt, 0, sizeof(fmt));
+	file = sf_open(name, SFM_READ, &fmt);
+	if (!file) {
+		fprintf(stderr, "%s: %s\n", name, sf_strerror(NULL));
+		return -1;
+	}
+
+	if (fmt.channels != 2) {
+		fprintf(stderr, "%s: %d channels not allowed\n",
+			name, fmt.channels);
+		return -1;
+	}
+
+	if (start)
+		sf_seek(file, start, SEEK_SET);
+
+	print_verbosity(verbosity);
+
+	if (!setjmp(eofjmp)) {
+		init_bits_sf(&br, file, 8);
+		br.msb = 0;
+		br.get_bits_cb = get_bits_cb;
+		br.eof_cb = eof_cb;
+		find_mqa_sync(&br);
+		scan_mqa(&br);
+	}
+
+	print_end();
+
+	sf_close(file);
+
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
 	const char *mdfile = NULL;
 	int start = 0;
 	int opt;
+	int i;
 
 	while ((opt = getopt(argc, argv, "1m:M:p:s:v")) != -1) {
 		switch (opt) {
@@ -361,38 +406,15 @@ int main(int argc, char **argv)
 	if (argc < 1)
 		return 1;
 
-	memset(&fmt, 0, sizeof(fmt));
-	file = sf_open(argv[0], SFM_READ, &fmt);
-	if (!file) {
-		fprintf(stderr, "%s: %s\n", argv[0], sf_strerror(NULL));
-		return 1;
-	}
+	for (i = 0; i < argc; i++) {
+		if (argc > 1)
+			printf("%s\n", argv[i]);
 
-	if (fmt.channels != 2) {
-		fprintf(stderr, "Only 2 channels supported\n");
-		return 1;
-	}
-
-	if (start)
-		sf_seek(file, start, SEEK_SET);
+		scan_file(argv[i], start);
 
-	print_verbosity(verbosity);
-
-	if (!setjmp(eofjmp)) {
-		init_bits_sf(&br, file, 8);
-		br.msb = 0;
-		br.get_bits_cb = get_bits_cb;
-		br.eof_cb = eof_cb;
-		find_mqa_sync(&br);
-		scan_mqa(&br);
+		if (metadata && mdfile)
+			write_metadata(mdfile);
 	}
 
-	print_end();
-
-	if (metadata && mdfile)
-		write_metadata(mdfile);
-
-	sf_close(file);
-
 	return 0;
 }