RTSPState Struct Reference

Private data for the RTSP demuxer. More...

#include <rtsp.h>


Data Fields

URLContextrtsp_hd
int nb_rtsp_streams
 number of items in the 'rtsp_streams' variable
struct RTSPStream ** rtsp_streams
 streams in this session
enum RTSPClientState state
 indicator of whether we are currently receiving data from the server.
int64_t seek_timestamp
 the seek value requested when calling av_seek_frame().
int seq
 RTSP command sequence number.
char session_id [512]
 copy of RTSPMessageHeader->session_id, i.e.
int timeout
 copy of RTSPMessageHeader->timeout, i.e.
int64_t last_cmd_time
 timestamp of the last RTSP command that we sent to the RTSP server.
enum RTSPTransport transport
 the negotiated data/packet transport protocol; e.g.
enum RTSPLowerTransport lower_transport
 the negotiated network layer transport protocol; e.g.
enum RTSPServerType server_type
 brand of server that we're talking to; e.g.
char auth [128]
 plaintext authorization line (username:password)
HTTPAuthState auth_state
 authentication state
char last_reply [2048]
 The last reply of the server to a RTSP command.
void * cur_transport_priv
 RTSPStream->transport_priv of the last stream that we read a packet from.
char control_uri [1024]
 some MS RTSP streams contain a URL in the SDP that we need to use for all subsequent RTSP requests, rather than the input URI; in other cases, this is a copy of AVFormatContext->filename.
int64_t start_time
 The synchronized start time of the output streams.
int need_subscription
 The following are used for Real stream selection.
enum AVDiscard real_setup_cache [MAX_STREAMS]
 stream setup during the last frame read.
char last_subscription [1024]
 the last value of the "SET_PARAMETER Subscribe:" RTSP command.
AVFormatContextasf_ctx
 The following are used for RTP/ASF streams.
uint64_t asf_pb_pos
 cache for position of the asf demuxer, since we load a new data packet in the bytecontext for each incoming RTSP packet.


Detailed Description

Private data for the RTSP demuxer.

Todo:
Use ByteIOContext instead of URLContext

Definition at line 183 of file rtsp.h.


Field Documentation

The following are used for RTP/ASF streams.

ASF demuxer context for the embedded ASF stream from WMS servers

Definition at line 267 of file rtsp.h.

Referenced by asfrtp_parse_packet(), asfrtp_parse_sdp_line(), ff_rtsp_close_streams(), and ff_wms_parse_sdp_a_line().

cache for position of the asf demuxer, since we load a new data packet in the bytecontext for each incoming RTSP packet.

Definition at line 271 of file rtsp.h.

Referenced by asfrtp_parse_packet(), and ff_wms_parse_sdp_a_line().

char RTSPState::auth[128]

plaintext authorization line (username:password)

Definition at line 237 of file rtsp.h.

authentication state

Definition at line 240 of file rtsp.h.

some MS RTSP streams contain a URL in the SDP that we need to use for all subsequent RTSP requests, rather than the input URI; in other cases, this is a copy of AVFormatContext->filename.

Definition at line 277 of file rtsp.h.

Referenced by rtsp_write_close(), rtsp_write_record(), and sdp_parse_line().

RTSPStream->transport_priv of the last stream that we read a packet from.

Definition at line 247 of file rtsp.h.

timestamp of the last RTSP command that we sent to the RTSP server.

This is used to calculate when to send dummy commands to keep the connection alive, in conjunction with timeout.

Definition at line 222 of file rtsp.h.

The last reply of the server to a RTSP command.

Definition at line 243 of file rtsp.h.

the last value of the "SET_PARAMETER Subscribe:" RTSP command.

this is used to send the same "Unsubscribe:" if stream setup changed, before sending a new "Subscribe:" command.

Definition at line 261 of file rtsp.h.

the negotiated network layer transport protocol; e.g.

TCP or UDP uni-/multicast

Definition at line 229 of file rtsp.h.

Referenced by ff_rtsp_close_streams(), and rtsp_write_packet().

number of items in the 'rtsp_streams' variable

Definition at line 187 of file rtsp.h.

Referenced by ff_rtsp_close_streams(), rtsp_write_packet(), sdp_parse_line(), and sdp_read_header().

The following are used for Real stream selection.

whether we need to send a "SET_PARAMETER Subscribe:" command

Definition at line 252 of file rtsp.h.

stream setup during the last frame read.

This is used to detect if we need to subscribe or unsubscribe to any new streams.

Definition at line 256 of file rtsp.h.

Definition at line 184 of file rtsp.h.

Referenced by rtsp_write_close(), rtsp_write_header(), rtsp_write_packet(), and tcp_write_packet().

streams in this session

Definition at line 189 of file rtsp.h.

Referenced by ff_rtsp_close_streams(), rtsp_write_packet(), sdp_parse_line(), and sdp_read_header().

the seek value requested when calling av_seek_frame().

This value is subsequently used as part of the "Range" parameter when emitting the RTSP PLAY command. If we are currently playing, this command is called instantly. If we are currently paused, this command is called whenever we resume playback. Either way, the value is only used once, see rtsp_read_play() and rtsp_read_seek().

Definition at line 203 of file rtsp.h.

RTSP command sequence number.

Definition at line 208 of file rtsp.h.

brand of server that we're talking to; e.g.

WMS, REAL or other. Detected based on the value of RTSPMessageHeader->server or the presence of RTSPMessageHeader->real_challenge

Definition at line 234 of file rtsp.h.

Referenced by sdp_parse_line().

copy of RTSPMessageHeader->session_id, i.e.

the server-provided session identifier that the client should re-transmit in each RTSP command

Definition at line 212 of file rtsp.h.

The synchronized start time of the output streams.

Definition at line 280 of file rtsp.h.

Referenced by rtsp_rtp_mux_open().

indicator of whether we are currently receiving data from the server.

Basically this isn't more than a simple cache of the last PLAY/PAUSE command sent to the server, to make sure we don't send 2x the same unexpectedly or commands in the wrong state.

Definition at line 195 of file rtsp.h.

Referenced by rtsp_write_packet(), and rtsp_write_record().

copy of RTSPMessageHeader->timeout, i.e.

the time (in seconds) that the server will go without traffic on the RTSP/TCP line before it closes the connection.

Definition at line 217 of file rtsp.h.

the negotiated data/packet transport protocol; e.g.

RTP or RDT

Definition at line 225 of file rtsp.h.

Referenced by ff_rtsp_close_streams(), rtsp_open_transport_ctx(), and sdp_parse_line().


The documentation for this struct was generated from the following file:

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