mjr2pcap.c File Reference

Helper tool to convert Janus .mjr recordings to .pcap files. More...

#include <arpa/inet.h>
#include <endian.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/time.h>
#include <glib.h>
#include <jansson.h>
#include "../debug.h"
#include "pp-rtp.h"

Include dependency graph for mjr2pcap.c:

Data Structures
struct	mjr2pcap_global_header
struct	mjr2pcap_packet_header
struct	mjr2pcap_ethernet_header
struct	mjr2pcap_ip_header
struct	mjr2pcap_udp_header

Macros
#define	htonll(x)   ((1==htonl(1)) ? (x) : ((gint64)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
#define	ntohll(x)   ((1==ntohl(1)) ? (x) : ((gint64)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))

Typedefs
typedef struct mjr2pcap_global_header	mjr2pcap_global_header
typedef struct mjr2pcap_packet_header	mjr2pcap_packet_header
typedef struct mjr2pcap_ethernet_header	mjr2pcap_ethernet_header
typedef struct mjr2pcap_ip_header	mjr2pcap_ip_header
typedef struct mjr2pcap_udp_header	mjr2pcap_udp_header

Functions
int	main (int argc, char *argv[])

Variables
int	janus_log_level = 4
gboolean	janus_log_timestamps = FALSE
gboolean	janus_log_colors = TRUE
char *	janus_log_global_prefix = NULL
int	lock_debug = 0
int	working = 0

Detailed Description

Helper tool to convert Janus .mjr recordings to .pcap files.

Author

Lorenzo Miniero loren.nosp@m.zo@m.nosp@m.eetec.nosp@m.ho.c.nosp@m.om

Copyright

GNU General Public License v3

Our Janus WebRTC gateway provides a simple helper (janus_recorder) to allow plugins to record audio, video and text frames sent by users. The mjr2pcap tool is a simple utility that allows you remove extract RTP packets from Janus recordings and save them to a .pcap file instead. Notice that network levels are simulated, and so are timestamps for when the packets have really been received, since that info is not stored in .mjr files. As such, its main purpose is helping analyze RTP packets, rather than investigate network issues.

Using the utility is quite simple. Just pass, as arguments to the tool, the path to the .mjr source file, and the path to the destination file, e.g.:

./mjr2pcap /path/to/source.mjr /path/to/destination.pcap

An attempt to process a non-RTP recording will result in an error.

Recordings post-processing utility

Macro Definition Documentation

htonll

#define htonll

(

x

)

((1==htonl(1)) ? (x) : ((gint64)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))

ntohll

#define ntohll

(

x

)

((1==ntohl(1)) ? (x) : ((gint64)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))

Typedef Documentation

mjr2pcap_ethernet_header

typedef struct mjr2pcap_ethernet_header mjr2pcap_ethernet_header

mjr2pcap_global_header

typedef struct mjr2pcap_global_header mjr2pcap_global_header

mjr2pcap_ip_header

typedef struct mjr2pcap_ip_header mjr2pcap_ip_header

mjr2pcap_packet_header

typedef struct mjr2pcap_packet_header mjr2pcap_packet_header

mjr2pcap_udp_header

typedef struct mjr2pcap_udp_header mjr2pcap_udp_header

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

Variable Documentation

janus_log_colors

gboolean janus_log_colors = TRUE

janus_log_global_prefix

char* janus_log_global_prefix = NULL

janus_log_level

int janus_log_level = 4

janus_log_timestamps

gboolean janus_log_timestamps = FALSE

lock_debug

int lock_debug = 0

working

int working = 0