tap-rtp-analysis.h

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#ifndef __TAP_RTP_ANALYSIS_H__
#define __TAP_RTP_ANALYSIS_H__
 
#include <epan/address.h>
#include <epan/packet_info.h>

 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
/****************************************************************************/
typedef struct _bw_history_item {
    double   time;  
    uint32_t bytes; 
} bw_history_item;
 
 
#define BUFF_BW 300 
 

typedef struct _tap_rtp_stat_t {
    bool            first_packet;             
    /* All fields below are valid only after rtppacket_analyse() has been called. */
    uint32_t        flags;                    
    uint16_t        seq_num;                  
    uint64_t        timestamp;                
    uint64_t        seq_timestamp;            
    double          bandwidth;                
    bw_history_item bw_history[BUFF_BW];      
    uint16_t        bw_start_index;           
    uint16_t        bw_index;                 
    uint32_t        total_bytes;              
    uint32_t        clock_rate;               
    double          delta;                    
    double          jitter;                   
    double          diff;                     
    double          skew;                     
    double          sumt;                     
    double          sumTS;                    
    double          sumt2;                    
    double          sumtTS;                   
    double          time;                     
    double          start_time;               
    double          lastnominaltime;          
    double          lastarrivaltime;          
    double          min_delta;                
    double          max_delta;                
    double          mean_delta;               
    double          min_jitter;               
    double          max_jitter;               
    double          max_skew;                 
    double          mean_jitter;              
    uint32_t        max_nr;                   
    uint32_t        start_seq_nr;             
    uint32_t        stop_seq_nr;              
    uint32_t        total_nr;                 
    uint32_t        sequence;                 
    uint16_t        pt;                       
    int             reg_pt;                   
    uint32_t        first_packet_num;         
    unsigned        last_payload_len;         
} tap_rtp_stat_t;

typedef struct _tap_rtp_save_data_t {
    uint32_t     timestamp;    
    unsigned int payload_type; 
    size_t       payload_len;  
} tap_rtp_save_data_t;
 
#define PT_UNDEFINED -1
 
/* status flags for the flags parameter in tap_rtp_stat_t */
#define STAT_FLAG_FIRST             0x001
#define STAT_FLAG_MARKER            0x002
#define STAT_FLAG_WRONG_SEQ         0x004
#define STAT_FLAG_PT_CHANGE         0x008
#define STAT_FLAG_PT_CN             0x010
#define STAT_FLAG_FOLLOW_PT_CN      0x020
#define STAT_FLAG_REG_PT_CHANGE     0x040
#define STAT_FLAG_WRONG_TIMESTAMP   0x080
#define STAT_FLAG_PT_T_EVENT        0x100
#define STAT_FLAG_DUP_PKT           0x200
 
/* forward */
struct _rtp_info;
 
/* function for analysing an RTP packet. Called from rtp_analysis and rtp_streams */

extern void rtppacket_analyse(tap_rtp_stat_t *statinfo,
                              const packet_info *pinfo,
                              const struct _rtp_info *rtpinfo);
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* __TAP_RTP_ANALYSIS_H__ */