#ifndef BIZCHAN_H
#define BIZCHAN_H

#pragma once

#include <stdarg.h>

#ifdef __cplusplus
extern "C" {
#endif


#ifdef _WIN32
#ifdef LIBBIZCHAN_EXPORTS
#define BIZCHAN_API(type)	_declspec(dllexport) type __stdcall
#else
#define BIZCHAN_API(type)	_declspec(dllimport) type __stdcall
#endif
#else
#define BIZCHAN_API(type)	type
#endif

typedef struct bizchan_t bizchan_t;

typedef struct bizchan_config_t {
	char *proxy_server;
	int proxy_server_port;
	char *bak_proxy_server;
	int bak_proxy_server_port;
	union {
		char *agent_id;
		char *call_no;
	};
	char *client_id;
	char *session_id;
	struct {
		int rtp_port;
		int desc;
	}video;
}bizchan_config_t;


typedef struct bizchan_callback_t  {
	void (*on_recv_photo)(bizchan_t *chan, int id, int error, int width, int height, const char *rgb24, int size, void *user_data);
	void (*on_recv_screen)(bizchan_t *chan, int id, int error, int width, int height, const char *rgb24, int size, void *user_data);
	void (*on_recv_pkt)(bizchan_t *chan, int type, int sub_type, int id, const char *pkt, int pkt_size, void *user_data);
	void (*on_connect)(bizchan_t *chan, int error, const char *remote_ip, int remote_video_rtp, int remote_video_desc, const char *remote_client_id, void *user_data);
	void (*on_close)(bizchan_t *chan, void *user_data);
	void (*on_destroy)(bizchan_t *chan, void *user_data);
	void (*dbg)(void *user_data, const char* fmt, va_list arg);
	void *user_data;
}bizchan_callback_t;

BIZCHAN_API(int) bizchan_lib_init();
BIZCHAN_API(int) bizchan_lib_term();

BIZCHAN_API(int) bizchan_create(const bizchan_config_t *config, const bizchan_callback_t *cb, bizchan_t **p_chan);
BIZCHAN_API(void) bizchan_destroy(bizchan_t *chan);
BIZCHAN_API(void) bizchan_set_tag(bizchan_t *chan, void *tag);
BIZCHAN_API(void*) bizchan_get_tag(bizchan_t *chan);
BIZCHAN_API(int) bizchan_start_connect(bizchan_t *chan);
BIZCHAN_API(int) bizchan_start_close(bizchan_t *chan);
BIZCHAN_API(int) bizchan_close(bizchan_t *chan);
BIZCHAN_API(int) bizchan_post_pkt(bizchan_t *chan, int type, int compress, int encrypt, int sub_type, int id, const char *pkt, int pkt_size);

typedef void (*OnRecvPacket)(int sub_type, const void *buf, int size, void *user_data);
typedef void (*OnMode)(int writeable, void *user_data);
BIZCHAN_API(int) bizchan_winsync_send(bizchan_t *chan, int sub_type, const void *buf, int size);
BIZCHAN_API(int) bizchan_winsync_set_cb(bizchan_t *chan, OnRecvPacket pkt_cb, OnMode mode_cb, void *user_data);

#ifdef __cplusplus
} // extern "C" {
#endif

#endif // BIZCHAN_H