#ifndef _RTP_H_
#define _RTP_H_



#include "str.h"



struct crypto_context;

struct rtp_header {
	unsigned char v_p_x_cc;
	unsigned char m_pt;
	u_int16_t seq_num;
	u_int32_t timestamp;
	u_int32_t ssrc;
	u_int32_t csrc[];
} __attribute__ ((packed));





int rtp_avp2savp(str *, struct crypto_context *);
int rtp_savp2avp(str *, struct crypto_context *);

void rtp_append_mki(str *s, struct crypto_context *c);
int srtp_payloads(str *to_auth, str *to_decrypt, str *auth_tag, str *mki,
		int auth_len, int mki_len,
		const str *packet, const str *payload);




#endif