158 lines
2.8 KiB
C
158 lines
2.8 KiB
C
#pragma once
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#include "mncc_protocol.h"
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/timer.h>
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#include <osmocom/core/utils.h>
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#include <stdbool.h>
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struct sip_agent;
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struct mncc_connection;
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struct nua_handle_s;
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struct call_leg;
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/**
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* One instance of a call with two legs. The initial
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* field will always be used by the entity that has
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* launched the call.
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*/
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struct call {
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struct llist_head entry;
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unsigned int id;
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struct call_leg *initial;
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struct call_leg *remote;
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const char *source;
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const char *dest;
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};
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enum {
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CALL_TYPE_NONE,
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CALL_TYPE_SIP,
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CALL_TYPE_MNCC,
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};
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struct call_leg {
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int type;
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struct call *call;
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bool in_release;
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/* Field to hold GSM 04.08 Cause Value. Section 10.5.4.11 Table 10.86 */
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int cause;
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/**
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* RTP data
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*/
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uint32_t ip;
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uint16_t port;
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uint32_t payload_type;
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uint32_t payload_msg_type;
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/**
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* Remote started to ring/alert
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*/
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void (*ring_call)(struct call_leg *);
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/**
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* Remote picked up
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*/
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void (*connect_call)(struct call_leg *);
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/**
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* Set by the call_leg implementation and will be called
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* by the application to release the call.
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*/
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void (*release_call)(struct call_leg *);
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/**
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* A DTMF key was entered. Forward it.
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*/
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void (*dtmf)(struct call_leg *, int keypad);
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};
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enum sip_cc_state {
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SIP_CC_INITIAL,
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SIP_CC_DLG_CNFD,
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SIP_CC_CONNECTED,
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};
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enum sip_dir {
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SIP_DIR_MO,
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SIP_DIR_MT,
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};
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struct sip_call_leg {
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/* base class */
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struct call_leg base;
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/* back pointer */
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struct sip_agent *agent;
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/* per instance members */
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struct nua_handle_s *nua_handle;
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enum sip_cc_state state;
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enum sip_dir dir;
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/* mo field */
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const char *wanted_codec;
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/* mt field */
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const char *sdp_payload;
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};
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enum mncc_cc_state {
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MNCC_CC_INITIAL,
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MNCC_CC_PROCEEDING, /* skip delivered state */
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MNCC_CC_CONNECTED,
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};
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enum mncc_dir {
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MNCC_DIR_MO,
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MNCC_DIR_MT,
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};
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struct mncc_call_leg {
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struct call_leg base;
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enum mncc_cc_state state;
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enum mncc_dir dir;
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uint32_t callref;
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struct gsm_mncc_number called;
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struct gsm_mncc_number calling;
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char imsi[16];
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struct osmo_timer_list cmd_timeout;
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int rsp_wanted;
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struct mncc_connection *conn;
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/* Field to hold GSM 04.08 Cause Value. Section 10.5.4.11 Table 10.86 */
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int cause;
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};
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extern struct llist_head g_call_list;
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void calls_init(void);
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struct call_leg *call_leg_other(struct call_leg *leg);
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void call_leg_release(struct call_leg *leg);
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struct call *call_mncc_create(void);
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struct call *call_sip_create(void);
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const char *call_leg_type(struct call_leg *leg);
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const char *call_leg_state(struct call_leg *leg);
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extern const struct value_string call_type_vals[];
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extern const struct value_string mncc_state_vals[];
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extern const struct value_string mncc_dir_vals[];
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extern const struct value_string sip_state_vals[];
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extern const struct value_string sip_dir_vals[];
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