1 files changed, 128 insertions, 0 deletions
diff --git a/src/libosmocc/endpoint.h b/src/libosmocc/endpoint.h
new file mode 100644
index 0000000..7145726
--- /dev/null
+++ b/src/libosmocc/endpoint.h
@@ -0,0 +1,128 @@
+#ifndef OSMO_CC_ENDPOINT_H
+#define OSMO_CC_ENDPOINT_H
+
+#include "message.h"
+#include "socket.h"
+#include "cause.h"
+
+/* special osmo-cc error codes */
+#define OSMO_CC_RC_SEE_ERRNO			-1
+#define OSMO_CC_RC_VERSION_MISMATCH		1
+
+#define OSMO_CC_ATTACH_TIMER			2
+
+/* call control state */
+enum osmo_cc_state {
+	OSMO_CC_STATE_IDLE = 0,
+	/* call states */
+	OSMO_CC_STATE_INIT_OUT,			/* outgoing CC-SETUP-REQ sent */
+	OSMO_CC_STATE_INIT_IN,			/* incoming CC-SETUP-IND received */
+	OSMO_CC_STATE_OVERLAP_OUT,		/* received CC-SETUP-ACK-IND on outgoing call */
+	OSMO_CC_STATE_OVERLAP_IN,		/* sent CC-SETUP-ACK-REQ on incoming call */
+	OSMO_CC_STATE_PROCEEDING_OUT,		/* received CC-PROC-IND on outgoing call */
+	OSMO_CC_STATE_PROCEEDING_IN,		/* sent CC-PROC-REQ on incoming call */
+	OSMO_CC_STATE_ALERTING_OUT,		/* received CC-ALERT-IND on outgoing call */
+	OSMO_CC_STATE_ALERTING_IN,		/* sent CC-ALERT-REQ on incoming call */
+	OSMO_CC_STATE_CONNECTING_OUT,		/* received CC-SETUP-CNF on outgoing call */
+	OSMO_CC_STATE_CONNECTING_IN,		/* sent CC-SETUP-RSP on incoming call */
+	OSMO_CC_STATE_ACTIVE,			/* received or sent CC-SETUP-COMPL-* */
+	OSMO_CC_STATE_DISCONNECTING_OUT,	/* sent CC-DISC-REQ */
+	OSMO_CC_STATE_DISCONNECTING_IN,		/* received CC-DISC-IND */
+	OSMO_CC_STATE_DISC_COLLISION,		/* received CC-DISC-IND after sending CC-DISC_REQ */
+	OSMO_CC_STATE_RELEASING_OUT,		/* sent CC-REL-REQ */
+	/* attachment states */
+	OSMO_CC_STATE_ATTACH_SENT,		/* outgoing CC-ATT-REQ sent to socket */
+	OSMO_CC_STATE_ATTACH_OUT,		/* received CC-ATT-RSP on outgoing socket */
+	OSMO_CC_STATE_ATTACH_WAIT,		/* wait for outgoing attachment after failure */
+	OSMO_CC_STATE_ATTACH_IN,		/* incoming CC-ATT-REQ received from socket*/
+};
+
+/* sample type */
+typedef int16_t osmo_cc_sample_t;
+
+#define OSMO_CC_SAMPLE_MILLIWATT 23170 /* peak sine at -3 dB of full sample range */
+#define OSMO_CC_SAMPLE_SPEECH 3672 /* peak speech at -16 dB of milliwatt */
+#define OSMO_CC_SAMPLE_MIN -32768 /* lowest level */
+#define OSMO_CC_SAMPLE_MAX 32767 /* highest level */
+
+struct osmo_cc_call;
+
+typedef struct osmo_cc_screen_list {
+	struct osmo_cc_screen_list *next;
+	int			has_from_type;
+	uint8_t			from_type;
+	int			has_from_present;
+	uint8_t			from_present;
+	char			from[128];
+	int			has_to_type;
+	uint8_t			to_type;
+	int			has_to_present;
+	uint8_t			to_present;
+	char			to[128];
+} osmo_cc_screen_list_t;
+
+/* endpoint instance */
+typedef struct osmo_cc_endpoint {
+	struct osmo_cc_endpoint	*next;
+	void			*priv;
+	void			(*ll_msg_cb)(struct osmo_cc_endpoint *ep, uint32_t callref, osmo_cc_msg_t *msg);
+	void			(*ul_msg_cb)(struct osmo_cc_call *call, osmo_cc_msg_t *msg);
+	osmo_cc_msg_list_t	*ll_queue;	/* messages towards lower layer */
+	struct osmo_cc_call	*call_list;
+	const char		*local_name; /* name of interface */
+	const char		*local_address; /* host+port */
+	const char		*local_host;
+	uint16_t		local_port;
+	const char		*remote_address; /* host+port */
+	const char		*remote_host;
+	uint16_t		remote_port;
+	uint8_t			serving_location;
+	osmo_cc_socket_t	os;
+	osmo_cc_screen_list_t	*screen_calling_in;
+	osmo_cc_screen_list_t	*screen_called_in;
+	osmo_cc_screen_list_t	*screen_calling_out;
+	osmo_cc_screen_list_t	*screen_called_out;
+	int			remote_auto;	/* automatic remote address */
+	struct timer		attach_timer;	/* timer to retry attachment */
+} osmo_cc_endpoint_t;
+
+extern osmo_cc_endpoint_t *osmo_cc_endpoint_list;
+
+/* call process */
+typedef struct osmo_cc_call {
+	struct osmo_cc_call	*next;
+	osmo_cc_endpoint_t	*ep;
+	enum osmo_cc_state	state;
+	int			lower_layer_released;	/* when lower layer sent release, while upper layer gets a disconnect */
+	int			upper_layer_released;	/* when upper layer sent release, while lower layer gets a disconnect */
+	uint32_t		callref;
+	osmo_cc_msg_list_t	*sock_queue;	/* messages from socket */
+	const char		*attached_host;	/* host and port from remote peer that attached to us */
+	uint16_t		attached_port;
+	const char		*attached_name;	/* interface name from remote peer that attached to us */
+} osmo_cc_call_t;
+
+/* returns 0 if ok
+ * returns <0 for error as indicated
+ * returns >=1 to indicate osmo-cc error code
+ */
+
+void osmo_cc_help(void);
+int osmo_cc_new(osmo_cc_endpoint_t *ep, const char *version, const char *name, uint8_t serving_location, void (*ll_msg_cb)(osmo_cc_endpoint_t *ep, uint32_t callref, osmo_cc_msg_t *msg), void (*ul_msg_cb)(osmo_cc_call_t *call, osmo_cc_msg_t *msg), void *priv, int argc, const char *argv[]);
+void osmo_cc_delete(struct osmo_cc_endpoint *ep);
+int osmo_cc_handle(void);
+osmo_cc_call_t *osmo_cc_call_by_callref(osmo_cc_endpoint_t *ep, uint32_t callref);
+void osmo_cc_ll_msg(osmo_cc_endpoint_t *ep, uint32_t callref, osmo_cc_msg_t *msg);
+void osmo_cc_ul_msg(void *priv, uint32_t callref, osmo_cc_msg_t *msg);
+osmo_cc_call_t *osmo_cc_call_new(osmo_cc_endpoint_t *ep);
+void osmo_cc_call_delete(struct osmo_cc_call *call);
+enum osmo_cc_session_addrtype osmo_cc_address_type(const char *address);
+const char *osmo_cc_host_of_address(const char *address);
+const char *osmo_cc_port_of_address(const char *address);
+
+#include "session.h"
+#include "rtp.h"
+#include "sdp.h"
+#include "screen.h"
+
+#endif /* OSMO_CC_ENDPOINT_H */