jack_connectd

commit 0ec8963a62d95322a0848ce75965b7481d05bda2
parent d59bcc1c67be40e9176e08f05d64ce71dabe4c4a
Author: vin <git@vineetk.net>
Date:   Fri, 30 May 2025 23:24:50 -0400

write the callback

Diffstat:
A
config.h
 | 
8
++++++++
M
main.c
 | 
40
+++++++++++++++++++++++++++++++++++++---

2 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/config.h b/config.h
@@ -0,0 +1,8 @@
+struct jack_connection_t {
+	const char *in;
+	const char *out;
+};
+
+struct jack_connection_t auto_connects[] = {
+	{"system:capture_1", "system:playback_1"},
+};
diff --git a/main.c b/main.c
@@ -1,15 +1,49 @@
+#include <arpa/tftp.h>
 #include <jack/jack.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+
+#define LEN(arr)	(sizeof(arr) / sizeof(arr[0]))
 
 static void
 registration_cb(jack_port_id_t port_id, int is_registered, void *arg)
 {
-	jack_client_t *client = (jack_client_t *)arg;
-	jack_port_t *port = jack_port_by_id(client, port_id);
-	const char *port_name = jack_port_name(port);
+	struct jack_connection_t conn;
+	jack_client_t *client;
+	jack_port_t *port;
+	const char *port_name;
+	int ret;
+
+	client = (jack_client_t *)arg;
+	port = jack_port_by_id(client, port_id);
+	port_name = jack_port_name(port);
 
 	if (is_registered) {
+		for (unsigned long i = 0; i < LEN(auto_connects); i++) {
+			conn = auto_connects[i];
+
+			if (strcmp(port_name, conn.in)) {
+				if (jack_port_flags(port) & JackPortIsInput) {
+					ret = jack_connect(client, port_name, conn.out);
+					if (ret != 0 && ret != EEXISTS) {
+						fprintf(stderr, "Failed to connect %s to %s.\n",
+						    port_name, conn.out);
+					}
+				}
+			} else if (strcmp(port_name, conn.out)) {
+				if (jack_port_flags(port) & JackPortIsOutput) {
+					ret = jack_connect(client, conn.in, port_name);
+					if (ret != 0 && ret != EEXISTS) {
+						fprintf(stderr, "Failed to connect %s to %s.\n",
+						    conn.in, port_name);
+					}
+				}
+			}
+		}
+
 		printf("%s registered\n", port_name);
 	} else {
 		printf("%s unregistered\n", port_name);