myvtm/Module/mod_sipphone/endpoint.cpp

#include "SpBase.h"
#ifdef RVC_OS_WIN
#include "stdafx.h"
#include <ObjBase.h>
#else

#endif

#include "endpoint.h"

#include <sofia-sip/su.h>
#include <sofia-sip/su_tag_class.h>
#include <sofia-sip/nua.h>
#include <sofia-sip/sip_status.h>
#include <sofia-sip/sdp.h>
#include <sofia-sip/sip_header.h>
#include <sofia-sip/su_log.h>
#include <sofia-sip/su_tagarg.h>
#include <sofia-sip/su_tag_io.h>
#include <sofia-sip/soa_tag.h>
#include <sofia-sip/su_wait.h>
#include <sofia-sip/nua_tag.h>

#include "refcnt.h"
#include "list.h"
#include "sockutil.h"
#include "hash.h"



#include "video_session.h"
#include "audio_session.h"

#include "rvc_media_common.h"
#include "Event.h"


bool g_IsExternalTerminalted = false;
// default: ptime = 20ms

#define CONDITION_PARAMS			\
	int status, \
	char const *phrase,		\
	nua_t *nua, \
	struct endpoint_t *ep,				\
	nua_handle_t *nh, \
	struct endpoint_call_t *call,		\
	sip_t const *sip,				\
	tagi_t tags[]


// the same with rtp payload type, the same as huawei open-eye
enum e_audio_rtp_pt 
{
	PCMU = 0, // 64kbps, 4.17
	PCMA = 8, // 64kbps, 4.11
	G729 = 18, // 8kbps, 3.9
};

enum e_video_rtp_pt
{
	H263 = 34, // h263
};

enum e_media_dir
{
	DIR_NONE = 0,
	DIR_TX = 1, 
	DIR_RX = 2,
	DIR_BOTH = 3,
};

typedef struct sdpvideo_desc_t
{
	unsigned long local_rtp_ip;
	int local_rtp_port;
	unsigned long remote_rtp_ip;
	int remote_rtp_port;
	int local_pt;
	int remote_pt;
};

typedef struct media_desc_t 
{
	unsigned long remote_ip;
	int remote_port;
	unsigned long local_ip;
	int local_port;

	int media_dir;

	int local_pt;
	int local_ptime;
	int remote_pt;
	int remote_ptime;

	int local_telephone_event_pt;
	int remote_telephone_event_pt;

	int param[16];
}media_desc_t;

// 1. how to exit

struct endpoint_call_t {
	struct list_head entry;
	endpoint_call_callback_t cb;
	endpoint_t *ep;
	audio_session_t *audio;
	video_session_t *video;
	int id;
	su_home_t *home;
	nua_handle_t *nh;
	char *to_uri;
	char *from_uri;
	char *call_id;
	sdp_session_t *last_sdp;
	int connected;
	int local_media_port;
	int local_video_port;
	unsigned int last_media_desc_hash;
	char local_ip[RVC_MAX_IP_LEN];
	DeviceTypeEnum eDeviceType;
	CallingTypeEnum nCallType;
	sdpvideo_desc_t sdpvieo_desc;
	DECLARE_REF_COUNT_MEMBER(ref_cnt);
};

DECLARE_REF_COUNT_STATIC(endpoint_call, endpoint_call_t)

struct endpoint_t {
	su_home_t home[1];
	su_root_t *root;
	nua_t *nua;
	endpoint_call_t *active_call;
#ifdef RVC_OS_WIN
	HANDLE event_thread;
#else
	pthread_t ievent_threadid;
#endif
	
	int call_seq;
	int media_port_seq;
	CEntityBase *entity;
	struct list_head call_list;
	endpoint_conf_t conf;
	int curr_audio_dev_type; // handfree or pickup
};

static const char *state_desc[] = {
	"STATE::INIT",
	"STATE::CALLING",
	"STATE::PROCEEDING",
	"STATE::COMPLETING",
	"STATE::READY",
	"STATE::TERMINATING",
	"STATE::TERMINATED",
};

static const char* call_type_table[] = {
	"NORMAL_CALLTYPE",
	"PADRINGUP_CALLTYPE",
	"PADTOPAD_CALLTYPE",
	"MOBILETOPAD_CALLTYPE",
	"DOUBLERECORD_CALLTYPE"
};

#ifndef VIDEOPLAYER_FLAG_DOUBLESIZE
#define VIDEOPLAYER_FLAG_DOUBLESIZE	0x01
#endif

#ifndef VIDEOPLAYER_FLAG_NOTIMER
#define VIDEOPLAYER_FLAG_NOTIMER	0x02
#endif

#ifndef VIDEOPLAYER_FLAG_PUSH
#define VIDEOPLAYER_FLAG_PUSH		0x04
#endif

#ifndef VIDEOPLAYER_FLAG_PULL
#define VIDEOPLAYER_FLAG_PULL		0x08
#endif

#ifndef VIDEOPLAYER_FLAG_CHECKTOP
#define VIDEOPLAYER_FLAG_CHECKTOP	0x10
#endif

#ifndef VIDEOPLAYER_FLAG_ZOOMOUTSIZE
#define VIDEOPLAYER_FLAG_ZOOMOUTSIZE	0x100
#endif

static void endpoint_media_change_audio_dev(endpoint_call_t *call, e_dev_type current_dev_type)
{
	if (call->audio) {
		LogWarn(Severity_Low, Error_Debug, EVENT_MOD_SIP_AUDIO_DEVICE_SWITCH, CSimpleStringA::Format("change audio device to %s mode.", DEV_PICKUP == current_dev_type ? "pickup" : "hand free").GetData());
		audio_session_change_dev(call->audio, current_dev_type);
	}
}

static __inline struct in_addr __lton(unsigned long ip)
{
	struct in_addr addr;
	addr.s_addr = ip;
	return addr;
}

#ifdef RVC_OS_WIN
static void endpoint_media_update_video(endpoint_call_t *call, media_desc_t *video_desc, video_session_callback_t* cb)
{
	if (video_desc->media_dir == DIR_NONE) {
		if (call->video) {
			video_session_stop(call->video);
			video_session_destroy(call->video);
			call->video = NULL;
		}
		else{
			if (DOUBLERECORD_CALLTYPE == call->nCallType){
				double_record_broadcast_video_session_stop();
			}
		}
	} 
	else 
	{
		int rc;
		endpoint_conf_t *ep_conf = &call->ep->conf;

		if (!call->audio){
			audio_session_conf_t conf = {0};
			strcpy(&conf.in_dev[DEV_PICKUP][0], ep_conf->audio_pickup_in_dev);
			strcpy(&conf.in_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_in_dev);
			strcpy(&conf.out_dev[DEV_PICKUP][0], ep_conf->audio_pickup_out_dev);
			strcpy(&conf.out_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_out_dev);
			conf.agc_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_agc;
			conf.agc_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_agc;
			conf.agc_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_agc;
			conf.agc_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_agc;
			conf.ns_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_ns;
			conf.ns_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_ns;
			conf.ns_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_ns;
			conf.ns_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_ns;
			conf.aec[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_aec;
			conf.aec[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_aec;
			rc = audio_session_create(&conf, &call->audio);
			if (rc != 0) {
				DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create audio session failed! rc = %d", rc);
				return;
			}
		}

		if (call->video) {
			video_session_destroy(call->video);
			call->video = NULL;
		}

		int i = 0;
		int local_view_x = video_desc->param[i++];
		int local_view_y = video_desc->param[i++];
		int local_view_cx = video_desc->param[i++];
		int local_view_cy = video_desc->param[i++];
		int remote_view_x = video_desc->param[i++];
		int remote_view_y = video_desc->param[i++];
		int remote_view_cx = video_desc->param[i++];
		int remote_view_cy = video_desc->param[i++];
		int remote_width = video_desc->param[i++];
		int remote_height = video_desc->param[i++];

		int local_hwd_move = video_desc->param[i++];
		int remote_hwd_move = video_desc->param[i++];

		video_session_conf_t video_conf = {0};
		video_conf.bit_rate = 256 * 1024;
		
		video_conf.local_rtp_ip = video_desc->local_ip;
		video_conf.local_rtp_port = video_desc->local_port;
		video_conf.local_video_view_x = local_view_x;
		video_conf.local_video_view_y = local_view_y;
		video_conf.local_video_view_cx = local_view_cx;
		video_conf.local_video_view_cy = local_view_cy;
		video_conf.mtu = ep_conf->mtu;
		video_conf.video_quant = ep_conf->quant;
		video_conf.remote_rtp_ip = video_desc->remote_ip;
		video_conf.remote_rtp_port = video_desc->remote_port;
		video_conf.remote_video_view_x = remote_view_x;
		video_conf.remote_video_view_y = remote_view_y;
		video_conf.remote_video_view_cx = remote_view_cx;
		video_conf.remote_video_view_cy = remote_view_cy;
		video_conf.remote_video_width = remote_width;
		video_conf.remote_video_height = remote_height;
		video_conf.ref_active_camera = call->ep->conf.ref_active_camera;
		video_conf.ref_camera_switch = call->ep->conf.ref_camera_switch;
		video_conf.ref_camera_state = call->ep->conf.ref_camera_state;
		video_conf.ref_window_state = call->ep->conf.ref_window_state;
		video_conf.ref_Is_showPersonArea = call->ep->conf.ref_Is_showPersonArea;
		video_conf.ref_active_img = NULL;
		video_conf.ref_Is_ActiveInspect = NULL;
		video_conf.camera_count = call->ep->conf.camera_count;
		video_conf.screen_count = call->ep->conf.screen_count;
		video_conf.ref_Up_Fps = call->ep->conf.ref_Up_Fps;
		video_conf.eDeviceType = call->eDeviceType;
		video_conf.nCallType = call->nCallType;
		video_conf.local_move = local_hwd_move;
		video_conf.remote_move = remote_hwd_move;
		video_conf.video_echo_cb = cb;
		video_conf.ilocal_wind_flags = VIDEOPLAYER_FLAG_PULL|VIDEOPLAYER_FLAG_CHECKTOP;
		video_conf.iremote_wind_flags = VIDEOPLAYER_FLAG_PUSH|VIDEOPLAYER_FLAG_CHECKTOP;
		video_conf.eType = (eVideoRenderType)call->ep->conf.irendertype;

		video_conf.local_pt = REC_COMMON_VIDEO_H264_PT;
		video_conf.remote_pt = REC_COMMON_VIDEO_H264_PT;
		
		rc = video_session_create(&video_conf, &call->video);
		if (rc != 0) {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create video session failed! rc = %d", rc);
			return;
		}

		rc = video_session_start(call->video);
		if (rc != 0) {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("start video session failed! rc = %d", rc);
			video_session_destroy(call->video);
			call->video = NULL;
			return;
		}
	}
}
#else
static void endpoint_media_update_video(endpoint_call_t *call, media_desc_t *video_desc, rvc_video_render_callback_t* cb)
{
	if (video_desc->media_dir == DIR_NONE) {
		if (call->video) {
			video_session_stop(call->video);
			video_session_destroy(call->video);
			call->video = NULL;
		}
	} 
	else 
	{
		int rc;
		endpoint_conf_t *ep_conf = &call->ep->conf;

		if (!call->audio){
			audio_session_conf_t conf = {0};
			strcpy(&conf.in_dev[DEV_PICKUP][0], ep_conf->audio_pickup_in_dev);
			strcpy(&conf.in_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_in_dev);
			strcpy(&conf.out_dev[DEV_PICKUP][0], ep_conf->audio_pickup_out_dev);
			strcpy(&conf.out_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_out_dev);
			conf.agc_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_agc;
			conf.agc_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_agc;
			conf.agc_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_agc;
			conf.agc_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_agc;
			conf.ns_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_ns;
			conf.ns_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_ns;
			conf.ns_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_ns;
			conf.ns_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_ns;
			conf.aec[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_aec;
			conf.aec[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_aec;
			rc = audio_session_create(&conf, &call->audio);
			if (rc != 0) {
				DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create audio session failed! rc = %d", rc);
				return;
			}
		}

		if (call->video) {
			video_session_destroy(call->video);
			call->video = NULL;
		}

		int i = 0;
		int remote_width = video_desc->param[i++];
		int remote_height = video_desc->param[i++];

		video_session_conf_t video_conf = {0};
		video_conf.bit_rate = 256 * 1024;
		video_conf.local_rtp_ip = video_desc->local_ip;
		video_conf.local_rtp_port = video_desc->local_port;
		video_conf.mtu = ep_conf->mtu;
		video_conf.video_quant = ep_conf->quant;
		video_conf.remote_rtp_ip = video_desc->remote_ip;
		video_conf.remote_rtp_port = video_desc->remote_port;
		video_conf.remote_video_width = remote_width;
		video_conf.remote_video_height = remote_height;
		video_conf.ref_active_camera = call->ep->conf.ref_active_camera;
		video_conf.ref_camera_switch = call->ep->conf.ref_camera_switch;
		video_conf.ref_camera_state = call->ep->conf.ref_camera_state;
		video_conf.ref_window_state = call->ep->conf.ref_window_state;
		video_conf.ref_Is_showPersonArea = call->ep->conf.ref_Is_showPersonArea;
		video_conf.ref_active_img = NULL;
		video_conf.ref_Is_ActiveInspect = NULL;
		video_conf.camera_count = call->ep->conf.camera_count;
		video_conf.screen_count = call->ep->conf.screen_count;
		video_conf.ref_Up_Fps = call->ep->conf.ref_Up_Fps;
		video_conf.eDeviceType = call->eDeviceType;
		video_conf.nCallType = call->nCallType;
		memcpy(&video_conf.video_render_cb, cb, sizeof(rvc_video_render_callback_t));
		video_conf.ilocal_wind_flags = VIDEOPLAYER_FLAG_PULL|VIDEOPLAYER_FLAG_CHECKTOP;
		video_conf.iremote_wind_flags = VIDEOPLAYER_FLAG_PUSH|VIDEOPLAYER_FLAG_CHECKTOP;
		video_conf.local_pt = REC_COMMON_VIDEO_H264_PT;
		video_conf.remote_pt = REC_COMMON_VIDEO_H264_PT;
		
		rc = video_session_create(&video_conf, &call->video);
		if (rc != 0) {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create video session failed! rc = %d", rc);
			return;
		}

		rc = video_session_start(call->video);
		if (rc != 0) {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("start video session failed! rc = %d", rc);
			video_session_destroy(call->video);
			call->video = NULL;
			return;
		}
	}
}
#endif

static void endpoint_media_update_audio(endpoint_call_t *call, media_desc_t *audio_desc, int dev_type)
{
	if (audio_desc->media_dir == DIR_NONE) {
		if (call->audio) {
			audio_session_stop(call->audio);
			audio_session_destroy(call->audio);
			call->audio = NULL;
		}
		else{
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("call->audio is null.");
		}
		if (call->video) { // close video also 
			video_session_stop(call->video);
			video_session_destroy(call->video);
			call->video = NULL;
		}
		else{
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("call->video is null.");
		#ifdef RVC_OS_WIN
			if (DOUBLERECORD_CALLTYPE == call->nCallType){
				double_record_broadcast_video_session_stop();
			}
		#endif	
		}
	} else {
		int rc;
		if (call->audio) {
			audio_session_stop(call->audio);
			audio_session_destroy(call->audio);
			call->audio = NULL;
		}
		if (!call->audio) {
			endpoint_conf_t *ep_conf = &call->ep->conf;
			audio_session_conf_t conf = {0};
			strcpy(&conf.in_dev[DEV_PICKUP][0], ep_conf->audio_pickup_in_dev);
			strcpy(&conf.in_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_in_dev);
			strcpy(&conf.out_dev[DEV_PICKUP][0], ep_conf->audio_pickup_out_dev);
			strcpy(&conf.out_dev[DEV_HANDFREE][0], ep_conf->audio_handfree_out_dev);			
			conf.agc_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_agc;
			conf.agc_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_agc;
			conf.agc_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_agc;
			conf.agc_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_agc;
			conf.ns_in[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_in_ns;
			conf.ns_in[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_in_ns;
			conf.ns_out[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_out_ns;
			conf.ns_out[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_out_ns;
			conf.aec[DEV_PICKUP] = !!ep_conf->audio_dsp.audio_pickup_aec;
			conf.aec[DEV_HANDFREE] = !!ep_conf->audio_dsp.audio_handfree_aec;
			rc = audio_session_create(&conf, &call->audio);
			if (rc != 0) {
				DbgWithLink(LOG_LEVEL_ERROR, LOG_TYPE_SYSTEM)("create audio session failed! rc = %d", rc);
				DbgWithLink(LOG_LEVEL_ERROR, LOG_TYPE_SYSTEM).setResultCode("RTA3109")("视频连线创建音频通道失败");
				return;
			}
		}
		audio_session_phonemedia_conf_t phone_conf = {0};
		phone_conf.dir = audio_desc->media_dir;
		phone_conf.dev_type = (e_dev_type)dev_type;
		phone_conf.local_dtmf_pt = audio_desc->local_telephone_event_pt;
		phone_conf.local_pt = audio_desc->local_pt;
		phone_conf.local_ptime = audio_desc->local_ptime;
		phone_conf.local_rtp_ip = audio_desc->local_ip;
		phone_conf.local_rtp_port = audio_desc->local_port;
		phone_conf.remote_dtmf_pt = audio_desc->remote_telephone_event_pt;
		phone_conf.remote_pt = audio_desc->remote_pt;
		phone_conf.remote_ptime = audio_desc->remote_ptime;
		phone_conf.remote_rtp_ip = audio_desc->remote_ip;
		phone_conf.remote_rtp_port = audio_desc->remote_port;
		
		if (NULL != call){
			phone_conf.eCalltype = call->nCallType;
			phone_conf.eDeviceType = call->eDeviceType;
		}
		
		rc = audio_session_start_phonemedia(call->audio, &phone_conf);
		if (rc != 0) 
		{
			LogWarn(Severity_Middle, Error_Debug, ERROR_MOD_SIP_AUDIO_INITFAIL, CSimpleStringA::Format("start audio session failed! rc = %d.", rc).GetData());
			DbgWithLink(LOG_LEVEL_ERROR, LOG_TYPE_SYSTEM).setResultCode("RTA310A")("视频连线启动音频通道失败");
			audio_session_destroy(call->audio);
			call->audio = NULL;
			return;
		}
	}
}

static unsigned int __hash_media_desc(media_desc_t *media_desc, unsigned int hash_code)
{
	if (media_desc) {
		hash_code += (unsigned int)media_desc->local_ip * 33;
		hash_code += (unsigned int)media_desc->remote_ip * 33;
		hash_code += (unsigned int)media_desc->local_port * 33;
		hash_code += (unsigned int)media_desc->remote_port * 33;
		hash_code += (unsigned int)media_desc->media_dir * 33;
		hash_code += (unsigned int)media_desc->local_pt * 33;
		hash_code += (unsigned int)media_desc->local_ptime * 33;
		hash_code += (unsigned int)media_desc->remote_pt * 33;
		hash_code += (unsigned int)media_desc->remote_ptime * 33;
		hash_code += (unsigned int)media_desc->local_telephone_event_pt * 33;
		hash_code += (unsigned int)media_desc->remote_telephone_event_pt * 33;
	}
	return hash_code;
}

static unsigned int hash_media_desc(media_desc_t *audio)
{
	unsigned int hash_code = 0;
	hash_code = __hash_media_desc(audio, hash_code);
	return hash_code;
}

#define USE_ALAW	1

static const char *call_make_offer(endpoint_call_t *call, char *buf, int size)
{
	int local_audio_rtp_port = call->local_media_port;
	int local_video_rtp_port = call->local_video_port;
	int local_video_pt = REC_COMMON_VIDEO_PT;
	int need;
	const char *fmt;

	{
		fmt = 
			"c=IN IP4 %s\r\n"
#ifdef USE_ALAW
			"m=audio %d RTP/AVP 8\r\n"
			"a=rtpmap:8 PCMA/8000\r\n"
			"a=ptime:30\r\n"
#elif defined(USE_G729)
			"m=audio %d RTP/AVP 18\r\n"
			"a=rtpmap:18 G729/8000\r\n"
			"a=fmtp:18 annexb=no\r\n"
			"a=ptime:30\r\n"
#endif
			//"a=rtpmap:97 telephone-event/8000\r\n"
			//"a=fmtp:97 0-15\r\n"
#ifdef USE_H263_VIDEO
			"m=video %d RTP/AVP	34\r\n"
			"a=rtpmap:34 H263/90000\r\n"
			"a=fmtp:34 QCIF=2 MaxBR=5040\r\n"
#endif
			//"a=inactive\r\n" //for debug only
			;
	}
	
	need = _scprintf(fmt, call->local_ip, local_audio_rtp_port);
	if (size < 0 || size > need) {
		sprintf(buf, fmt, call->local_ip, local_audio_rtp_port);
		return buf;
	} else {
		return NULL;
	}
}

static int new_call_id(endpoint_t *ep)
{
	return ++ep->call_seq;
}

int new_media_port(endpoint_t *ep)
{
	ep->media_port_seq += 2;
	if (ep->media_port_seq >= ep->conf.media_stop_port) {
		ep->media_port_seq = ep->conf.media_start_port;
	}
	return ep->media_port_seq;
}

static void handle_invite(CONDITION_PARAMS)
{
	// we are client only, not accept in-comming call
	nua_respond(nh, SIP_403_FORBIDDEN, TAG_END());
}

static void handle_reinvite(CONDITION_PARAMS)
{
	char sdp[512] = {0};
	sip_content_type_t const *ct = NULL;

	tl_gets(tags,
		SIPTAG_CONTENT_TYPE_REF(ct),
		TAG_END());

	if (ct) {
		call_make_offer(call, sdp, sizeof(sdp));		
	}

	nua_respond(nh, 
		SIP_200_OK, 
		TAG_IF(ct, SOATAG_USER_SDP_STR(sdp)), 
		TAG_IF(ct, SOATAG_AUDIO_AUX("telephone-event")), 
		TAG_END());
}

static void handle_r_invite(CONDITION_PARAMS)
{
	// nothing to do
}

static int dir_from_attr(const sdp_media_t *m)
{
	int dir = DIR_NONE;

	if (m) {
		if (m->m_attributes) {
			static const char *ds[] = {
				"inactive", "sendonly", "recvonly", "sendrecv"
			};
			int i;
			int n = array_size(ds);
			for (i = 0; i < n; ++i) {
				sdp_attribute_t *attr = sdp_attribute_find(m->m_attributes, ds[i]);
				if (attr) {
					dir = i;
					break;
				}
			}
			if (i >= n)
				dir = DIR_BOTH;
		} else {
			dir = DIR_BOTH;
		}
	}

	return dir;
}

static int ptime_from_attr(const sdp_media_t *m)
{
	int ptime = 0; // zero for default

	if (m) {
		if (m->m_attributes) {
			sdp_attribute_t *attr = sdp_attribute_find(m->m_attributes, "ptime");
			if (attr && attr->a_value) {
				ptime = atoi(attr->a_value);
				if (ptime < 0)
					ptime = 0;
			}
		}
	}

	return ptime;
}

static const sdp_rtpmap_t *find_codec(const sdp_rtpmap_t *list, const char *codec)
{
	if (!codec)
		return NULL;
	for (;list; list=list->rm_next) {
		if (!_stricmp(list->rm_encoding, codec)) {
			break;
		}
	}
	return list;
}

static int get_telephone_event_pt(const sdp_rtpmap_t *list)
{
	int pt = -1;
	const sdp_rtpmap_t *rm = find_codec(list, "telephone-event");
	if (rm) {
		pt = rm->rm_pt;
	}
	return pt;
}

static int get_media_direction(const sdp_media_t *lm, const sdp_media_t *rm)
{
	int media_dir = DIR_NONE;
	if (rm->m_port == 0 || lm->m_port == 0) {
		media_dir = DIR_NONE;
	} else {
		int ldir = dir_from_attr(lm);
		int rdir = dir_from_attr(rm);
		if (ldir == DIR_NONE || rdir == DIR_NONE) {
			media_dir = DIR_NONE;
		} else if (ldir == DIR_TX || rdir == DIR_RX) {
			media_dir = DIR_TX;
		}  else if (ldir == DIR_RX || rdir == DIR_TX) {
			media_dir = DIR_RX;
		} else {
			media_dir = DIR_BOTH;
		}
	}
	return media_dir;
}

static int negotiate_audio(endpoint_call_t *call, media_desc_t *audio_desc, const sdp_media_t *lm, const sdp_media_t *rm)
{
	memset(audio_desc, 0, sizeof(media_desc_t));
	const char *local_ip;
	const char *remote_ip;

	local_ip = lm->m_connections ? lm->m_connections->c_address : lm->m_session->sdp_connection->c_address;
	remote_ip = rm->m_connections ? rm->m_connections->c_address : rm->m_session->sdp_connection->c_address;

	audio_desc->local_ip = strlen(call->local_ip) ? inet_addr(call->local_ip) : 0;
	audio_desc->local_port = call->local_media_port;

	audio_desc->remote_ip = remote_ip ? inet_addr(remote_ip) : 0;
	audio_desc->remote_port = rm->m_port;
	audio_desc->local_telephone_event_pt = 97;
	audio_desc->remote_telephone_event_pt = get_telephone_event_pt(rm->m_rtpmaps);
	audio_desc->local_ptime = ptime_from_attr(lm);
	audio_desc->remote_ptime = ptime_from_attr(rm);

	int pt = -1;
	for (sdp_rtpmap_t *t = lm->m_rtpmaps; t; t = t->rm_next) {
		sdp_rtpmap_t *tt = sdp_rtpmap_find_matching(rm->m_rtpmaps, t);
		if (tt && tt->rm_pt < 96) {
			pt = tt->rm_pt;
			break;
		}
	}
	audio_desc->local_pt = audio_desc->remote_pt = pt;

	audio_desc->media_dir = get_media_direction(lm, rm);
	return 0;
}

static int negotiate_video(endpoint_call_t *call, media_desc_t *video_desc, const sdp_media_t *lm, const sdp_media_t *rm)
{
	memset(video_desc, 0, sizeof(media_desc_t));

	const char *local_ip;
	const char *remote_ip;

	local_ip = lm->m_connections ? lm->m_connections->c_address : lm->m_session->sdp_connection->c_address;
	remote_ip = rm->m_connections ? rm->m_connections->c_address : rm->m_session->sdp_connection->c_address;


	video_desc->local_ip = strlen(call->local_ip) ? inet_addr(call->local_ip) : 0;
	video_desc->local_port = call->local_video_port;

	video_desc->remote_ip = remote_ip ? inet_addr(remote_ip) : 0;
	video_desc->remote_port = rm->m_port;
	video_desc->local_telephone_event_pt = 97;
	video_desc->remote_telephone_event_pt = get_telephone_event_pt(rm->m_rtpmaps);
	video_desc->local_ptime = ptime_from_attr(lm);
	video_desc->remote_ptime = ptime_from_attr(rm);

	int pt = -1;
	for (sdp_rtpmap_t *t = lm->m_rtpmaps; t; t = t->rm_next) {
		sdp_rtpmap_t *tt = sdp_rtpmap_find_matching(rm->m_rtpmaps, t);
		if (tt) {
			pt = tt->rm_pt;
			break;
		}
	}
	video_desc->local_pt = video_desc->remote_pt = pt;
	video_desc->media_dir = get_media_direction(lm, rm);
	return 0;
}


static void negotiate_sdp(endpoint_call_t *call, const sdp_session_t *local_sdp, const sdp_session_t* remote_sdp)
{
	const sdp_media_t *lm = local_sdp->sdp_media;
	const sdp_media_t *rm = remote_sdp->sdp_media;
	media_desc_t audio_desc = {0}, video_desc = {0};
	int rc = -1, rv = -1;
	for(; lm; lm = lm->m_next)
	{
		if (0 == lm->m_port)
		{
			continue;
		}
		const sdp_media_t *rm = remote_sdp->sdp_media;
		for (; rm; rm = rm->m_next)
		{
			if (rm->m_type == lm->m_type)
			{
				if (sdp_media_audio == rm->m_type)
				{
					rc = negotiate_audio(call, &audio_desc, lm, rm);
				}
				if (call->nCallType != NORMAL_CALLTYPE && call->nCallType != DOUBLERECORD_CALLTYPE)
				{
					if (sdp_media_video == rm->m_type)
					{
						rv = negotiate_video(call, &video_desc, lm, rm);
					}
				}
			}
		}
	}

	if (rc == 0) 
	{
		unsigned int hash_code = hash_media_desc(&audio_desc);
		if (hash_code != call->last_media_desc_hash) 
		{
			endpoint_media_update_audio(call, &audio_desc, call->ep->curr_audio_dev_type);
			call->last_media_desc_hash = hash_code;
			//char strmsg[MAX_PATH] = {0};
			//snprintf(strmsg, MAX_PATH, "negotiate audio success!local audio ip=%s port=%d pt=%d,remote audio ip=%s port=%d,pt=%d",str_local,audio_desc.local_port,audio_desc.local_pt,str_remote,audio_desc.remote_port,audio_desc.remote_pt);
			//LogWarn(Severity_Low, Error_Debug, EVENT_MOD_SIP_CALL_AUDIO_NEGOTIATE, strmsg);
		}
	}

	if (rv == 0) 
	{
		unsigned int hash_code = hash_media_desc(&video_desc);
		if (hash_code != call->last_media_desc_hash) 
		{
			call->sdpvieo_desc.local_pt = video_desc.local_pt;
			call->sdpvieo_desc.local_rtp_ip = video_desc.local_ip;
			call->sdpvieo_desc.local_rtp_port = video_desc.local_port;
			call->sdpvieo_desc.remote_pt = video_desc.remote_pt;
			call->sdpvieo_desc.remote_rtp_ip = video_desc.remote_ip;
			call->sdpvieo_desc.remote_rtp_port = video_desc.remote_port;
			call->last_media_desc_hash = hash_code;
			//char strmsg[MAX_PATH] = {0};
			//_snprintf(strmsg, MAX_PATH, "negotiate video success!local video ip=%s port=%d pt=%d,remote video ip=%s port=%d pt=%d",str_local,video_desc.local_port,video_desc.local_pt,str_remote,video_desc.remote_port,video_desc.remote_pt);
			//LogWarn(Severity_Low, Error_Debug, EVENT_MOD_SIP_CALL_VIDEO_NEGOTIATE, strmsg);
		}
	}
	else
	{
		if (call->nCallType != NORMAL_CALLTYPE && call->nCallType != DOUBLERECORD_CALLTYPE)
		{
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("negotiate video Fail!!!");
		}
	}
}

static void on_state(CONDITION_PARAMS)
{
	int offer_recv = 0, answer_recv = 0, offer_sent = 0, answer_sent = 0;
	int state = nua_callstate_init;
	const char *replaces_str = NULL;
	const sdp_session_t *remote_sdp = NULL;
	const char *remote_sdp_str = NULL;
	const sdp_session_t *local_sdp = NULL;
	const char *local_sdp_str = NULL;
	int st;

	if (!call) {
		nua_handle_destroy(nh);
		return;
	}

	if (g_IsExternalTerminalted)
	{
		return;
	}

	tl_gets(tags,
		NUTAG_CALLSTATE_REF(state),
		NUTAG_OFFER_RECV_REF(offer_recv),
		NUTAG_ANSWER_RECV_REF(answer_recv),
		NUTAG_OFFER_SENT_REF(offer_sent),
		NUTAG_ANSWER_SENT_REF(answer_sent),
		SIPTAG_REPLACES_STR_REF(replaces_str), 
		SOATAG_REMOTE_SDP_STR_REF(remote_sdp_str), 
		SOATAG_LOCAL_SDP_STR_REF(local_sdp_str), 
		TAG_END());

	switch (state) 
	{
		case nua_callstate_calling:
			{
				if (local_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, local_sdp_str, strlen(local_sdp_str), -1);
					assert(call->last_sdp == NULL);
					call->last_sdp = sdp_session_dup(call->home, sdp_session(parser));
					sdp_parser_free(parser);
				}
				st = CALLING;
				call->cb.on_call_state(st, state_desc[st], phrase, call->cb.user_data);
			}
			break;
		
	case nua_callstate_proceeding:
			{
				st = PROCEEDING;
				call->cb.on_call_state(st, state_desc[st], phrase, call->cb.user_data);
				if (remote_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, remote_sdp_str, strlen(remote_sdp_str), -1);
					remote_sdp = sdp_session(parser);
					if (call->last_sdp) {
						negotiate_sdp(call, call->last_sdp, remote_sdp);
						su_free(call->home, call->last_sdp);
						call->last_sdp = NULL;
					}
					sdp_parser_free(parser);
				}
			}
			break;
		
		case nua_callstate_completing:
			{
				st = COMPLETING;
				call->cb.on_call_state(st, state_desc[st], phrase, call->cb.user_data);
				if (remote_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, remote_sdp_str, strlen(remote_sdp_str), -1);
					remote_sdp = sdp_session(parser);
					if (call->last_sdp) {
						negotiate_sdp(call, call->last_sdp, remote_sdp);
						su_free(call->home, call->last_sdp);
						call->last_sdp = NULL;
					}
					sdp_parser_free(parser);
				}
			}
			break;

		case nua_callstate_completed:
			{
				if (remote_sdp_str) {
					if (!call->last_sdp) {
						sdp_parser_t* parser = sdp_parse(call->home, remote_sdp_str, strlen(remote_sdp_str), -1);
						call->last_sdp = sdp_session_dup(call->home, sdp_session(parser));
						sdp_parser_free(parser);
					}
				}
				if (local_sdp_str) {
					if (call->last_sdp) {
						sdp_parser_t* parser = sdp_parse(call->home, local_sdp_str, strlen(local_sdp_str), -1);
						local_sdp = sdp_session(parser);
						negotiate_sdp(call, local_sdp, call->last_sdp);
						su_free(call->home, call->last_sdp);
						call->last_sdp = NULL;
						sdp_parser_free(parser);
					}
				}
			}
			break;

		case nua_callstate_ready:
			{
				call->connected = true;
				st = READY;
				call->cb.on_call_state(st, state_desc[st], phrase, call->cb.user_data);
				if (remote_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, remote_sdp_str, strlen(remote_sdp_str), -1);
					remote_sdp = sdp_session(parser);
					if (call->last_sdp) {
						negotiate_sdp(call, call->last_sdp, remote_sdp);
						su_free(call->home, call->last_sdp);
						call->last_sdp = NULL;
					}
					sdp_parser_free(parser);
				}
#if 0
				if (remote_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, remote_sdp_str, strlen(remote_sdp_str), -1);
					remote_sdp = sdp_session(parser);
					negotiate_sdp(call, call->last_sdp, remote_sdp);
					sdp_parser_free(parser);
				}
				else if (local_sdp_str) {
					sdp_parser_t* parser = sdp_parse(call->home, local_sdp_str, strlen(local_sdp_str), -1);
					local_sdp = sdp_session(parser);
					negotiate_sdp(call, local_sdp, call->last_sdp);
					sdp_parser_free(parser);
				}
#endif
			}
			break;

		case nua_callstate_terminated:
			{
				st = TERMINATED;
				{
					media_desc_t audio_desc = { 0 };
					audio_desc.media_dir = DIR_NONE;
					endpoint_media_update_audio(call, &audio_desc, call->ep->curr_audio_dev_type);
				}
				call->cb.on_call_state(st, state_desc[st], phrase, call->cb.user_data);
				nua_handle_bind(nh, NULL);
				nua_handle_destroy(nh);
				call->nh = NULL;
			}
			break;

		default:
			break;
	}

}

void terminatedcall(endpoint_call_t *call)
{
	int st = TERMINATED;
	g_IsExternalTerminalted = true;
	{
		media_desc_t audio_desc = {0};
		audio_desc.media_dir = DIR_NONE;
		endpoint_media_update_audio(call, &audio_desc, call->ep->curr_audio_dev_type);
	}
}
	

static void endpoint_callback(nua_event_t   event,
						 int           status,
						 char const   *phrase,
						 nua_t        *nua,
						 nua_magic_t  *magic,
						 nua_handle_t *nh,
						 nua_hmagic_t *hmagic,
						 sip_t const  *sip,
						 tagi_t        tags[])
{
	switch (event) 
	{
		if (!g_IsExternalTerminalted)
		{
			case nua_i_invite:
				if (hmagic == NULL) {
					handle_invite(status, phrase, nua, (endpoint_t*)magic, nh, (endpoint_call_t*)hmagic, sip, tags);
				} else {
					handle_reinvite(status, phrase, nua, (endpoint_t*)magic, nh, (endpoint_call_t*)hmagic, sip, tags);
				}
				break;

			case nua_r_invite:
				handle_r_invite(status, phrase, nua, (endpoint_t*)magic, nh, (endpoint_call_t*)hmagic, sip, tags);
				break;

			case nua_i_bye:
				//.....
				break;

			case nua_i_info:
				break;

			case nua_i_state:
				on_state(status, phrase, nua, (endpoint_t*)magic, nh, (endpoint_call_t*)hmagic, sip, tags);
				break;

			case nua_i_active:
				break;

			case nua_i_options:
				//nua_respond(nh, SIP_200_OK, NUTAG_WITH_THIS(nua), SOATAG_USER_SDP_STR(NULL), TAG_END());
				nua_respond(nh, SIP_200_OK, TAG_END());
				break;

			case nua_r_cancel:
				if (status > 300) {
					nua_bye(nh, TAG_END());
				}
				break;
			case nua_i_prack:
			case nua_r_prack:
				break;

			case nua_r_bye:
				//LOG_TRACE("nua_r_bye");
				if (status > 300) {
					nua_bye(nh, TAG_END());
				}
				break;
		/* and so on ... */

	default:
		if (status > 100) { /* unknown event -> print out error message */
		DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("unknown event %d: %03d %s.",
			event,
			status,
			phrase);
		} else {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("unknown event %d.", event);
		}
		break;
	}
		
	}

	if (!hmagic) 
	{
		nua_handle_destroy(nh);
		return;
	}

}

#ifdef RVC_OS_WIN
static unsigned int __stdcall __event_thread(void* arg)
#else
void* __event_thread(void* arg)
#endif
{
	endpoint_t *ep = (endpoint_t *)arg;
	ep->entity->GetFunction()->InitLogCurrentThread();

#ifdef RVC_OS_WIN
	CoInitialize(NULL);
#else

#endif // RVC_OS_WIN

	DbgWithLink(LOG_LEVEL_DEBUG, LOG_TYPE_SYSTEM)("enter event_thread.");

	ep->root = su_root_create(ep);

	ep->nua = nua_create(ep->root,
		&endpoint_callback,
		ep,
		NUTAG_URL(ep->conf.uri),
		TAG_END());

	nua_set_params(ep->nua,
		SIPTAG_ALLOW_STR("INVITE,CANCEL,BYE,ACK,INFO,OPTIONS"),
		NUTAG_AUTOALERT(1),
		NUTAG_ALLOW("PRACK"),
		NUTAG_EARLY_MEDIA(1),
		NUTAG_SESSION_TIMER(1),
		NUTAG_AUTOANSWER(0),
		NUTAG_AUTOACK(1),
		NTATAG_SIP_T1X64(8000),
		TAG_NULL());

	su_root_run(ep->root);
	nua_shutdown(ep->nua);
	ep->nua = NULL;
	su_root_destroy(ep->root);
	ep->root = NULL;

#ifdef RVC_OS_WIN
	CoUninitialize();
#else
	DbgWithLink(LOG_LEVEL_DEBUG, LOG_TYPE_SYSTEM)("leave event_thread.");
#endif // RVC_OS_WIN
	return 0;
}

static int __endpoint_break(void *arg)
{
	endpoint_t *ep = (endpoint_t *)arg;
	//.....nua_shutdown
	su_root_break(ep->root);

	return 0;
}


static endpoint_t *__endpoint_create(CEntityBase *pEntity, const endpoint_conf_t *conf,int nDev)
{
	endpoint_t *ep;

	ep = ZALLOC_T(endpoint_t);

	su_home_init(ep->home);

	memcpy(&ep->conf, conf, sizeof(endpoint_conf_t));

	ep->media_port_seq = (conf->media_start_port + (SP::Module::Comm::RVCGetTickCount() % (conf->media_stop_port - conf->media_start_port))) & 0xfffc;
	
	ep->entity = pEntity;
	ep->call_seq = SP::Module::Comm::RVCGetTickCount();
	ep->curr_audio_dev_type = nDev;
	INIT_LIST_HEAD(&ep->call_list);

	return ep;
}

static void __endpoint_destroy(endpoint_t *ep)
{
	su_root_destroy(ep->root);
	su_home_deinit(ep->home);
	free(ep);
}

static int __endpoint_start(endpoint_t *ep)
{
#ifdef RVC_OS_WIN
	ep->event_thread = (HANDLE)_beginthreadex(NULL, 0, &__event_thread, ep, 0, NULL);
	if (ep->event_thread)
	{
		while (!ep->root)
		{
			DWORD dwRet = WaitForSingleObject(ep->event_thread, 1);
			if (dwRet == WAIT_OBJECT_0)
			{
				CloseHandle(ep->event_thread);
				ep->event_thread = NULL;
				break;
			}
		}
	}
	return ep->event_thread ? 0 : -1;
#else
	//pthread_attr_t attr;
	//pthread_attr_init(&attr);
	//pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
	int err = pthread_create(&ep->ievent_threadid, NULL, __event_thread, ep);
	//pthread_attr_destroy(&attr);
	if (0 == err) {
		while (!ep->root) {
			struct timespec ts; 
			clock_gettime(CLOCK_REALTIME, &ts);
			long unsec = ts.tv_nsec + (1000 * 1000);
			ts.tv_sec += (unsec / 1000000000);
			ts.tv_nsec = (unsec % 1000000000);
			if (0 == pthread_timedjoin_np(ep->ievent_threadid, NULL, &ts)) {
				ep->ievent_threadid = 0;
				break;
			}
		}
	}
	else {
		DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create event thread failed.");
	}

	return ep->ievent_threadid > 0 ? 0 : -1;
#endif
}

static void __endpoint_stop(endpoint_t *ep)
{
#ifdef RVC_OS_WIN
	if (ep->event_thread)
	{
		int rc;
		su_task_execute(su_root_task(ep->root), &__endpoint_break, ep, &rc);
		WaitForSingleObject(ep->event_thread, INFINITE);
		CloseHandle(ep->event_thread);
		ep->event_thread = NULL;
	}
#else
	if (ep->ievent_threadid > 0)
	{
		int rc;
		su_task_execute(su_root_task(ep->root), &__endpoint_break, ep, &rc);
		if (0 == pthread_join(ep->ievent_threadid, NULL)) {
			ep->ievent_threadid = 0;
		}
		else {
			DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("pthread join error for %s", strerror(errno));
		}
	}
#endif
}

static void rvc_sofia_logger(void* stream, char const* fmt, va_list ap) {
	if (!fmt)
		return;
	char line[255];
	vsnprintf(line, sizeof(line), fmt, ap);
	DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("rvc_sofia_logger : %s", line);
}

int endpoint_init_lib()
{
	int result = su_init();
	//su_log_set_level(NULL, 9);
	//su_log_redirect(NULL, rvc_sofia_logger, NULL);
	return result;
}

void endpoint_deinit_lib()
{
	su_deinit();
}

endpoint_t *endpoint_create(CEntityBase *pEntity, const endpoint_conf_t *conf,int nDev)
{
	endpoint_t *endpt;
	
	endpt = __endpoint_create(pEntity, conf,nDev);
	if (endpt) {
		int rc = __endpoint_start(endpt);

		if (rc != 0) 
		{
			__endpoint_destroy(endpt);
			endpt = NULL;
		}
	}

	return endpt;
}

void endpoint_destroy(endpoint_t *ep)
{
	if (ep) 
	{
		__endpoint_stop(ep);
		__endpoint_destroy(ep);
	}
}

int endpoint_invoke(endpoint_t *ep, int (*func)(void*), void *user_data, int *result)
{
	if (ep){
		return su_task_execute(su_root_task(ep->root), func, user_data, result);
	} 
	else
	{
		*result = Error_Param;
		return -1;
	}
}

void endpoint_change_audio_dev(endpoint_t *ep, int dev_type)
{
	if (ep){
		if (ep->curr_audio_dev_type != dev_type) {
			ep->curr_audio_dev_type = dev_type;
			if (ep->active_call) {
				endpoint_media_change_audio_dev(ep->active_call, (e_dev_type)dev_type);
			} else {
				DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("active call is null!");
			}
		}
	}
}


endpoint_call_t *endpoint_call_create(endpoint_t *ep, const endpoint_call_params_t* pcallparam, const endpoint_call_callback_t *cb)
{
	endpoint_call_t *call = NULL;
	su_home_t *home = NULL; 

	if (!pcallparam || !pcallparam->to_uri){
		return NULL;
	}

	home = su_home_create();
	if (!home){
		goto on_error;
	}
	
	call = (endpoint_call_t*)su_home_new(sizeof(endpoint_call_t));
	if (!call){
		goto on_error;
	}
	memset(call, 0, sizeof(endpoint_call_t));
	call->connected = 0;
	call->ep = ep;
	call->home = home;
	call->last_media_desc_hash = 0;
	call->to_uri = su_strdup(home, pcallparam->to_uri);
	if (pcallparam->from_uri != NULL){
		call->from_uri = su_strdup(home, pcallparam->from_uri);
	}

	if (pcallparam->call_id != NULL){
		call->call_id = su_strdup(home, pcallparam->call_id);
	}

	if (NULL != pcallparam->local_ip){
		_snprintf(call->local_ip, RVC_MAX_IP_LEN, "%s", pcallparam->local_ip);
	}
	
	call->eDeviceType = pcallparam->nDeviceType;
	call->nCallType = pcallparam->nCallType;
	memcpy(&call->cb, cb, sizeof(endpoint_call_callback_t));
	call->id = new_call_id(ep);
	call->local_media_port = pcallparam->ilocal_audio_port;
	call->local_video_port = pcallparam->ilocal_video_port;
	REF_COUNT_INIT(&call->ref_cnt);
	list_add_tail(&call->entry, &ep->call_list);
	ep->active_call = call;

	return call;

on_error:
	if (home)
		su_home_unref(home);

	return call;
}

void endpoint_call_destroy(endpoint_call_t *call)
{
	endpoint_call_dec_ref(call);
}

int endpoint_call_start(endpoint_call_t *call)
{
	char sdp[512] = {0};

	if (call->nh)
		return -1;

	if (call->from_uri != NULL && call->call_id != NULL){
		call->nh = nua_handle(call->ep->nua, 
			call,
			SIPTAG_CALL_ID_STR(call->call_id),
			SIPTAG_FROM_STR(call->from_uri),
			SIPTAG_TO_STR(call->to_uri),
			TAG_END());
	} else if (call->from_uri != NULL){
		call->nh = nua_handle(call->ep->nua, 
			call,
			SIPTAG_FROM_STR(call->from_uri),
			SIPTAG_TO_STR(call->to_uri),
			TAG_END());
	}else if (call->call_id != NULL){
		call->nh = nua_handle(call->ep->nua, 
			call,
			SIPTAG_FROM_STR(call->ep->conf.uri),
			SIPTAG_CALL_ID_STR(call->call_id),
			SIPTAG_TO_STR(call->to_uri),
			TAG_END());
	}else{
		call->nh = nua_handle(call->ep->nua, 
			call,
			SIPTAG_FROM_STR(call->ep->conf.uri),
			SIPTAG_TO_STR(call->to_uri),
			TAG_END());
	}

	call_make_offer(call, sdp, -1);
	if (0 == strlen(sdp)){
		LogWarn(Severity_Middle, Error_Debug, EVENT_MOD_SIP_INVALID_SDP, "invalid sdp.");
	}

	nua_invite(call->nh, 
		//NUTAG_URL(call->remote_uri), 
		SOATAG_USER_SDP_STR(sdp), 
		NUTAG_SESSION_TIMER(20000),
		//SOATAG_AUDIO_AUX("telephone-event"), 
		TAG_END());

	return 0;
}

int endpoint_call_hangup(endpoint_call_t *call)
{
	if (call->nh) {
		if (call->connected) {
			nua_bye(call->nh, NUTAG_SESSION_TIMER(8000),TAG_END());
		} else {
			nua_cancel(call->nh, NUTAG_SESSION_TIMER(8000),TAG_END());
		}
	}
	return 0;
}

#ifdef RVC_OS_WIN
int endpoint_call_start_video(endpoint_call_t *call, unsigned long remote_ip, int remote_video_rtp, 
	unsigned long local_ip, int local_video_rtp, 
	int remote_width, int remote_height,
	int local_view_x, int local_view_y, int local_view_cx, int local_view_cy, 
	int remote_view_x, int remote_view_y, int remote_view_cx, int remote_view_cy,
	int local_move, int remote_move, video_session_callback_t* cb)
{	
	if (call) 
	{
		int i = 0;
		media_desc_t video_desc = {0};
		video_desc.media_dir = DIR_BOTH;
		if (call->nCallType == NORMAL_CALLTYPE || call->nCallType == DOUBLERECORD_CALLTYPE)//如果是可视柜台模式，使用协助通道的协商结果
		{
			video_desc.local_ip = local_ip;
			video_desc.local_port = local_video_rtp;
			video_desc.remote_port = remote_video_rtp;
			video_desc.remote_ip = remote_ip;
		}
		else //如果是非可视柜台模式，使用SDP协商的参数
		{
			video_desc.local_ip = call->sdpvieo_desc.local_rtp_ip;
			video_desc.local_port = call->sdpvieo_desc.local_rtp_port;
			video_desc.local_pt = call->sdpvieo_desc.local_pt;
			video_desc.remote_ip = call->sdpvieo_desc.remote_rtp_ip;
			video_desc.remote_port = call->sdpvieo_desc.remote_rtp_port;
			video_desc.remote_pt = call->sdpvieo_desc.remote_pt;
		}
		video_desc.param[i++] = local_view_x;
		video_desc.param[i++] = local_view_y;
		video_desc.param[i++] = local_view_cx;
		video_desc.param[i++] = local_view_cy;
		video_desc.param[i++] = remote_view_x;
		video_desc.param[i++] = remote_view_y;
		video_desc.param[i++] = remote_view_cx;
		video_desc.param[i++] = remote_view_cy;
		video_desc.param[i++] = remote_width;
		video_desc.param[i++] = remote_height;
		video_desc.param[i++] = local_move;
		video_desc.param[i++] = remote_move;
		endpoint_media_update_video(call, &video_desc, cb);

		return 0;
	} 
	else 
	{	
		return Error_Param;
	}
} 
#else
int endpoint_call_start_video(endpoint_call_t* call, endpoint_call_param_t* pcallparam, rvc_video_render_callback_t* render_cb)
{
	if (call) 
	{
		int i = 0;
		media_desc_t video_desc = {0};
		video_desc.media_dir = DIR_BOTH;
		if (call->nCallType == NORMAL_CALLTYPE || call->nCallType == DOUBLERECORD_CALLTYPE)//如果是可视柜台模式，使用协助通道的协商结果
		{
			video_desc.local_ip = pcallparam->local_ip;
			video_desc.local_port = pcallparam->local_port;
			video_desc.remote_port = pcallparam->remote_port;
			video_desc.remote_ip = pcallparam->remote_ip;
		}
		else //如果是非可视柜台模式，使用SDP协商的参数
		{
			video_desc.local_ip = call->sdpvieo_desc.local_rtp_ip;
			video_desc.local_port = call->sdpvieo_desc.local_rtp_port;
			video_desc.local_pt = call->sdpvieo_desc.local_pt;
			video_desc.remote_ip = call->sdpvieo_desc.remote_rtp_ip;
			video_desc.remote_port = call->sdpvieo_desc.remote_rtp_port;
			video_desc.remote_pt = call->sdpvieo_desc.remote_pt;
		}

		video_desc.param[i++] = pcallparam->remote_width;
		video_desc.param[i++] = pcallparam->remote_height;
		endpoint_media_update_video(call, &video_desc, render_cb);

		return 0;
	} 
	else 
	{	
		return Error_Param;
	}
} 
#endif


int endpoint_call_stop_video(endpoint_call_t *call)
{
	if (call) {
		media_desc_t video_desc = {0};
		video_desc.media_dir = DIR_NONE;
		endpoint_media_update_video(call, &video_desc,NULL);
		return 0;
	} else {
		return Error_Param;
	}
}


#ifdef RVC_OS_WIN

int endpoint_call_stop_double_record_broadcast_video()
{
	double_record_broadcast_video_session_stop();

	return Error_Succeed;
}


int local_remote_show_video(endpoint_call_t *call,int local_view_x, int local_view_y, int local_view_cx, int local_view_cy,int remote_view_x, int remote_view_y, int remote_view_cx, int remote_view_cy, int local_move, int remote_move, video_session_callback_t* cb)
{
	int rc;
	endpoint_conf_t *ep_conf = &call->ep->conf;
	if (call->video) 
	{
		video_session_destroy(call->video);
		call->video = NULL;
	}
	int remote_video_width = REC_COMMON_VIDEO_SSM_AGENT_WIDTH;
	int remote_video_height = REC_COMMON_VIDEO_SSM_AGENT_HEIGHT;
	if (eStand2sType == call->eDeviceType){
		remote_video_width = REC_COMMON_VIDEO_DSM_AGENT_WIDTH;
		remote_video_height = REC_COMMON_VIDEO_DSM_AGENT_HEIGHT;
	}

	video_session_conf_t video_conf = {0};
	video_conf.bit_rate = 256 * 1024;
	video_conf.local_rtp_ip = 0;
	video_conf.local_rtp_port = 0;
	video_conf.local_video_view_x = local_view_x;
	video_conf.local_video_view_y = local_view_y;
	video_conf.local_video_view_cx = local_view_cx;
	video_conf.local_video_view_cy = local_view_cy;
	video_conf.local_move = local_move;
	video_conf.mtu = ep_conf->mtu;
	video_conf.video_quant = ep_conf->quant;
	video_conf.remote_rtp_ip = 0;
	video_conf.remote_rtp_port = 0;
	video_conf.remote_video_view_x = remote_view_x;
	video_conf.remote_video_view_y = remote_view_y;
	video_conf.remote_video_view_cx = remote_view_cx;
	video_conf.remote_video_view_cy = remote_view_cy;
	video_conf.remote_move = remote_move;
	video_conf.remote_video_width = remote_video_width;
	video_conf.remote_video_height = remote_video_height;
	video_conf.ref_active_camera = call->ep->conf.ref_active_camera;
	video_conf.ref_camera_switch = call->ep->conf.ref_camera_switch;
	video_conf.ref_camera_state = call->ep->conf.ref_camera_state;
	video_conf.ref_window_state = call->ep->conf.ref_window_state;
	video_conf.ref_active_img = call->ep->conf.ref_active_img;
	video_conf.ref_Is_ActiveInspect = call->ep->conf.ref_Is_ActiveInspect;
	video_conf.ref_Is_showPersonArea = call->ep->conf.ref_Is_showPersonArea;
	video_conf.camera_count = call->ep->conf.camera_count;
	video_conf.screen_count = call->ep->conf.screen_count;
	video_conf.eDeviceType = call->eDeviceType;
	video_conf.video_echo_cb = cb;
	video_conf.ilocal_wind_flags = VIDEOPLAYER_FLAG_PULL|VIDEOPLAYER_FLAG_CHECKTOP;
	video_conf.iremote_wind_flags = VIDEOPLAYER_FLAG_PUSH|VIDEOPLAYER_FLAG_CHECKTOP;
	video_conf.eType = (eVideoRenderType)call->ep->conf.irendertype;
	rc = local_video_session_create(&video_conf, &call->video, true);
	if (rc != 0){
		DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("create video session failed! rc = %d", rc);
		return -1;
	}

	rc = video_session_start(call->video);
	if (rc != 0){
		DbgWithLink(LOG_LEVEL_INFO, LOG_TYPE_SYSTEM)("start video session failed! rc = %d", rc);
		video_session_destroy(call->video);
		call->video = NULL;
		return -1;
	}

	return 0;
}


int local_play_stop_video(endpoint_call_t *call)
{
	if (call) {
		media_desc_t video_desc = {0};
		video_desc.media_dir = DIR_NONE;
		endpoint_media_update_video(call, &video_desc,NULL);
		return 0;
	} else 
	{
		return Error_Param;
	}
}

#endif

static void __endpoint_call_destroy(endpoint_call_t *call)
{
	list_del(&call->entry);
	if (call->ep && call->ep->active_call == call) {
		call->ep->active_call = NULL;
	}
	su_home_unref(call->home);
}


IMPLEMENT_REF_COUNT_MT_STATIC(endpoint_call, endpoint_call_t, ref_cnt, __endpoint_call_destroy)