avb: add aecp stubs

src/modules/module-avbtp/aecp.c

@@ -0,0 +1,118 @@
+/* AVB support
+ *
+ * Copyright © 2022 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <spa/utils/json.h>
+#include <spa/debug/mem.h>
+
+#include <pipewire/pipewire.h>
+
+#include "aecp.h"
+#include "internal.h"
+
+struct aecp {
+	struct server *server;
+	struct spa_hook server_listener;
+
+	uint64_t now;
+};
+
+static void aecp_message_debug(struct aecp *aecp, const struct avbtp_packet_aecp *p)
+{
+}
+
+static int aecp_message(void *data, uint64_t now, const void *message, int len)
+{
+	struct aecp *aecp = data;
+	const struct avbtp_packet_aecp *p = message;
+
+	if (AVBTP_PACKET_GET_SUBTYPE(p) != AVBTP_SUBTYPE_AECP)
+		return 0;
+
+	spa_debug_mem(0, p, len);
+
+	return 0;
+}
+
+static void aecp_destroy(void *data)
+{
+	struct aecp *aecp = data;
+	spa_hook_remove(&aecp->server_listener);
+	free(aecp);
+}
+
+static void aecp_periodic(void *data, uint64_t now)
+{
+}
+
+static int do_help(struct aecp *aecp, const char *args)
+{
+	return 0;
+}
+
+static int aecp_command(void *data, uint64_t now, const char *command, const char *args)
+{
+	struct aecp *aecp = data;
+	int res;
+
+	if (!spa_strstartswith(command, "/aecp/"))
+		return 0;
+
+	command += strlen("/aecp/");
+	aecp->now = now;
+
+	if (spa_streq(command, "help"))
+		res = do_help(aecp, args);
+	else
+		res = -ENOTSUP;
+
+	return res;
+}
+
+static const struct server_events server_events = {
+	AVBTP_VERSION_SERVER_EVENTS,
+	.destroy = aecp_destroy,
+	.message = aecp_message,
+	.periodic = aecp_periodic,
+	.command = aecp_command
+};
+
+struct avbtp_aecp *avbtp_aecp_register(struct server *server)
+{
+	struct aecp *aecp;
+
+	aecp = calloc(1, sizeof(*aecp));
+	if (aecp == NULL)
+		return NULL;
+
+	aecp->server = server;
+
+	avdecc_server_add_listener(server, &aecp->server_listener, &server_events, aecp);
+
+	return (struct avbtp_aecp*)aecp;
+}
+
+void avbtp_aecp_unregister(struct avbtp_aecp *aecp)
+{
+	aecp_destroy(aecp);
+}