rdt.h File Reference

#include <stdint.h>
#include "avformat.h"
#include "rtpdec.h"

Go to the source code of this file.

Functions
RDTDemuxContext *	ff_rdt_parse_open (AVFormatContext *ic, int first_stream_of_set_idx, void *priv_data, const RTPDynamicProtocolHandler *handler)
	Allocate and init the RDT parsing context. More...
void	ff_rdt_parse_close (RDTDemuxContext *s)
void	ff_rdt_calc_response_and_checksum (char response[41], char chksum[9], const char *challenge)
	Calculate the response (RealChallenge2 in the RTSP header) to the challenge (RealChallenge1 in the RTSP header from the Real/Helix server), which is used as some sort of client validation. More...
void	ff_rdt_subscribe_rule (char *cmd, int size, int stream_nr, int rule_nr)
	Add subscription information to Subscribe parameter string. More...
int	ff_rdt_parse_header (const uint8_t *buf, int len, int *pset_id, int *pseq_no, int *pstream_id, int *pis_keyframe, uint32_t *ptimestamp)
	Parse RDT-style packet header. More...
int	ff_rdt_parse_packet (RDTDemuxContext *s, AVPacket *pkt, uint8_t **buf, int len)
	Parse RDT-style packet data (header + media data). More...
void	ff_real_parse_sdp_a_line (AVFormatContext *s, int stream_index, const char *buf)
	Parse a server-related SDP line. More...

Function Documentation

ff_rdt_parse_open()

RDTDemuxContext* ff_rdt_parse_open	(	AVFormatContext *	ic,
		int	first_stream_of_set_idx,
		void *	priv_data,
		const RTPDynamicProtocolHandler *	handler
	)

Allocate and init the RDT parsing context.

Parameters

ic	the containing RTSP demuxer context
first_stream_of_set_idx	index to the first AVStream in the RTSP demuxer context's ic->streams array that is part of this particular stream's set of streams (with identical content)
priv_data	private data of the payload data handler context
handler	pointer to the parse_packet() payload parsing function

Returns

a newly allocated RDTDemuxContext. Free with ff_rdt_parse_close().

Definition at line 55 of file rdt.c.

Referenced by ff_rtsp_open_transport_ctx().

ff_rdt_parse_close()

void ff_rdt_parse_close

(

RDTDemuxContext *

s

)

Definition at line 78 of file rdt.c.

Referenced by ff_rtsp_undo_setup(), and rtsp_read_setup().

ff_rdt_calc_response_and_checksum()

void ff_rdt_calc_response_and_checksum	(	char	response[41],
		char	chksum[9],
		const char *	challenge
	)

Calculate the response (RealChallenge2 in the RTSP header) to the challenge (RealChallenge1 in the RTSP header from the Real/Helix server), which is used as some sort of client validation.

Parameters

response	pointer to response buffer, it should be at least 41 bytes (40 data + 1 zero) bytes long.
chksum	pointer to buffer containing a checksum of the response, it should be at least 9 (8 data + 1 zero) bytes long.
challenge	pointer to the RealChallenge1 value provided by the server.

Definition at line 94 of file rdt.c.

ff_rdt_subscribe_rule()

void ff_rdt_subscribe_rule	(	char *	cmd,
		int	size,
		int	stream_nr,
		int	rule_nr
	)

Add subscription information to Subscribe parameter string.

Parameters

cmd	string to write the subscription information into.
size	size of cmd.
stream_nr	stream number.
rule_nr	rule number to conform to.

Definition at line 384 of file rdt.c.

Referenced by rtsp_read_packet().

ff_rdt_parse_header()

int ff_rdt_parse_header	(	const uint8_t *	buf,
		int	len,
		int *	pset_id,
		int *	pseq_no,
		int *	pstream_id,
		int *	pis_keyframe,
		uint32_t *	ptimestamp
	)

Parse RDT-style packet header.

Parameters

buf	input buffer
len	length of input buffer
pset_id	will be set to the set ID this packet belongs to
pseq_no	will be set to the sequence number of the packet
pstream_id	will be set to the stream ID this packet belongs to
pis_keyframe	will be whether this packet belongs to a keyframe
ptimestamp	will be set to the timestamp of the packet

Returns

the amount of bytes consumed, or negative on error

Referenced by ff_rdt_parse_packet(), and ff_rtsp_tcp_read_packet().

ff_rdt_parse_packet()

int ff_rdt_parse_packet	(	RDTDemuxContext *	s,
		AVPacket *	pkt,
		uint8_t **	buf,
		int	len
	)

Parse RDT-style packet data (header + media data).

Usage similar to rtp_parse_packet().

< Should not be used if buf is NULL, but should be set to the timestamp of the packet returned....

Definition at line 335 of file rdt.c.

ff_real_parse_sdp_a_line()

void ff_real_parse_sdp_a_line	(	AVFormatContext *	s,
		int	stream_index,
		const char *	buf
	)

Parse a server-related SDP line.

Parameters

s	the RTSP AVFormatContext
stream_index	the index of the first stream in the set represented by the SDP m= line (in s->streams)
buf	the SDP line

Definition at line 515 of file rdt.c.