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-rw-r--r--lib/protocol.h87
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diff --git a/lib/protocol.h b/lib/protocol.h
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+++ b/lib/protocol.h
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+/* PipeWire AGL Cluster IPC
+ *
+ * Copyright © 2021 Collabora Ltd.
+ * @author Julian Bouzas <julian.bouzas@collabora.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef __ICIPC_PROTOCOL_H__
+#define __ICIPC_PROTOCOL_H__
+
+#include <spa/pod/pod.h>
+
+#include "defs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* request */
+
+ICIPC_API
+size_t
+icipc_protocol_calculate_request_size (const char *name,
+ const struct spa_pod *args);
+
+ICIPC_API
+void
+icipc_protocol_build_request (uint8_t *buffer,
+ size_t size,
+ const char *name,
+ const struct spa_pod *args);
+
+ICIPC_API
+bool
+icipc_protocol_parse_request (const uint8_t *buffer,
+ size_t size,
+ const char **name,
+ const struct spa_pod **args);
+
+/* reply */
+
+ICIPC_API
+size_t
+icipc_protocol_calculate_reply_ok_size (const struct spa_pod *value);
+
+ICIPC_API
+size_t
+icipc_protocol_calculate_reply_error_size (const char *msg);
+
+ICIPC_API
+void
+icipc_protocol_build_reply_ok (uint8_t *buffer,
+ size_t size,
+ const struct spa_pod *value);
+
+ICIPC_API
+void
+icipc_protocol_build_reply_error (uint8_t *buffer,
+ size_t size,
+ const char *msg);
+
+ICIPC_API
+bool
+icipc_protocol_is_reply_ok (const uint8_t *buffer, size_t size);
+
+ICIPC_API
+bool
+icipc_protocol_is_reply_error (const uint8_t *buffer, size_t size);
+
+ICIPC_API
+bool
+icipc_protocol_parse_reply_ok (const uint8_t *buffer,
+ size_t size,
+ const struct spa_pod **value);
+
+ICIPC_API
+bool
+icipc_protocol_parse_reply_error (const uint8_t *buffer,
+ size_t size,
+ const char **msg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif