--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/endp.h	Sun Jul 07 02:14:01 2024 +0000
@@ -0,0 +1,60 @@
+/*
+ * twrtp_endp is the big abstraction provided by libtwrtp: a complete
+ * RTP endpoint with RTP & RTCP sockets, sending and receiving both types
+ * of packets, and incorporating twjit.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <osmocom/core/osmo_io.h>
+#include <osmocom/core/socket.h>
+
+#include <themwi/rtp/twjit.h>
+
+struct twrtp_endp_tx {
+	uint32_t ssrc;
+	uint32_t ts;
+	uint16_t seq;
+	bool started;
+	bool restart;
+};
+
+struct twrtp_endp_stats {
+	uint32_t rx_rtp_pkt;
+	uint32_t rx_rtp_badsrc;
+	uint32_t rx_rtcp_pkt;
+	uint32_t rx_rtcp_badsrc;
+	uint32_t tx_rtp_pkt;
+	uint32_t tx_rtp_bytes;
+	uint32_t tx_rtcp_pkt;
+};
+
+struct twrtp_endp {
+	/* the root of the matter: the two sockets */
+	int rtp_fd;
+	int rtcp_fd;
+	struct osmo_io_fd *iofd_rtp;
+	struct osmo_io_fd *iofd_rtcp;
+	struct osmo_sockaddr rtp_remote;
+	struct osmo_sockaddr rtcp_remote;
+	/* Rx and Tx state */
+	struct twrtp_jibuf_inst *twjit;
+	/* RTCP Rx structure to be inserted here */
+	struct twrtp_endp_tx tx;
+	/* always have to have stats */
+	struct twrtp_endp_stats stats;
+	/* bool flags at the end for structure packing optimization */
+	bool register_done;
+	bool remote_set;
+	bool rx_enable;
+};
+
+/* public API functions */
+
+struct twrtp_endp *twrtp_endp_create(void *ctx,
+				     struct twrtp_jibuf_config *config);
+
+void twrtp_endp_destroy(struct twrtp_endp *endp);