lib: add wpipc library

Simple library that uses sockets for inter-process communication. It provides an
API to create server and client objects. Users can add custom handlers in the
server, and clients can send requests for those custom handlers.

Signed-off-by: George Kiagiadakis <george.kiagiadakis@collabora.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/lib/receiver.h b/lib/receiver.h
new file mode 100644
index 0000000..cf13e1b
--- /dev/null
+++ b/lib/receiver.h
@@ -0,0 +1,78 @@
+/* PipeWire AGL Cluster IPC
+ *
+ * Copyright © 2021 Collabora Ltd.
+ *    @author Julian Bouzas <julian.bouzas@collabora.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef __ICIPC_RECEIVER_H__
+#define __ICIPC_RECEIVER_H__
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#include "defs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct icipc_receiver;
+
+enum icipc_receiver_sender_state {
+  ICIPC_RECEIVER_SENDER_STATE_CONNECTED = 0,
+  ICIPC_RECEIVER_SENDER_STATE_DISCONNECTED
+};
+
+struct icipc_receiver_events {
+  /* emitted when a sender state changes */
+  void (*sender_state) (struct icipc_receiver *self,
+                        int sender_fd,
+                        enum icipc_receiver_sender_state state,
+                        void *data);
+
+  /* emitted when message is received and needs to be handled */
+  bool (*handle_message) (struct icipc_receiver *self,
+                          int sender_fd,
+                          const uint8_t *buffer,
+                          size_t size,
+                          void *data);
+};
+
+ICIPC_API
+struct icipc_receiver *
+icipc_receiver_new (const char *path,
+                    size_t buffer_size,
+                    const struct icipc_receiver_events *events,
+                    void *events_data,
+                    size_t user_size);
+
+ICIPC_API
+void
+icipc_receiver_free (struct icipc_receiver *self);
+
+ICIPC_API
+bool
+icipc_receiver_start (struct icipc_receiver *self);
+
+ICIPC_API
+void
+icipc_receiver_stop (struct icipc_receiver *self);
+
+ICIPC_API
+bool
+icipc_receiver_is_running (struct icipc_receiver *self);
+
+/* for subclasses only */
+
+ICIPC_API
+void *
+icipc_receiver_get_user_data (struct icipc_receiver *self);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif