#include <stdint.h>
#include "avformat.h"
#include "rtspcodes.h"
#include "rtpdec.h"
#include "network.h"
#include "httpauth.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"

Data Structures
struct	RTSPTransportField
	This describes a single item in the "Transport:" line of one stream as negotiated by the SETUP RTSP command. More...

struct	RTSPMessageHeader
	This describes the server response to each RTSP command. More...

struct	RTSPState
	Private data for the RTSP demuxer. More...

struct	RTSPSource

struct	RTSPStream
	Describe a single stream, as identified by a single m= line block in the SDP content. More...

Macros
#define	RTSP_DEFAULT_PORT 554

#define	RTSPS_DEFAULT_PORT 322

#define	RTSP_MAX_TRANSPORTS 8

#define	RTSP_TCP_MAX_PACKET_SIZE 1472

#define	RTSP_DEFAULT_NB_AUDIO_CHANNELS 1

#define	RTSP_DEFAULT_AUDIO_SAMPLERATE 44100

#define	RTSP_RTP_PORT_MIN 5000

#define	RTSP_RTP_PORT_MAX 65000

#define	RTSP_FLAG_FILTER_SRC 0x1
	Filter incoming UDP packets - receive packets only from the right source address and port.

#define	RTSP_FLAG_LISTEN 0x2
	Wait for incoming connections.

#define	RTSP_FLAG_CUSTOM_IO 0x4
	Do all IO via the AVIOContext.

#define	RTSP_FLAG_RTCP_TO_SOURCE 0x8
	Send RTCP packets to the source address of received packets.

#define	RTSP_FLAG_PREFER_TCP 0x10
	Try RTP via TCP first if possible.

Enumerations
enum	RTSPLowerTransport { RTSP_LOWER_TRANSPORT_UDP = 0, RTSP_LOWER_TRANSPORT_TCP = 1, RTSP_LOWER_TRANSPORT_UDP_MULTICAST = 2, RTSP_LOWER_TRANSPORT_NB, RTSP_LOWER_TRANSPORT_HTTP = 8, RTSP_LOWER_TRANSPORT_CUSTOM = 16 }
	Network layer over which RTP/etc packet data will be transported. More...

enum	RTSPTransport { RTSP_TRANSPORT_RTP, RTSP_TRANSPORT_RDT, RTSP_TRANSPORT_RAW, RTSP_TRANSPORT_NB }
	Packet profile of the data that we will be receiving. More...

enum	RTSPControlTransport { RTSP_MODE_PLAIN, RTSP_MODE_TUNNEL }
	Transport mode for the RTSP data. More...

enum	RTSPClientState { RTSP_STATE_IDLE, RTSP_STATE_STREAMING, RTSP_STATE_PAUSED, RTSP_STATE_SEEKING }
	Client state, i.e. More...

enum	RTSPServerType { RTSP_SERVER_RTP, RTSP_SERVER_REAL, RTSP_SERVER_WMS, RTSP_SERVER_NB }
	Identify particular servers that require special handling, such as standards-incompliant "Transport:" lines in the SETUP request. More...

Functions
void	ff_rtsp_parse_line (RTSPMessageHeader reply, const char buf, RTSPState rt, const char method)

int	ff_rtsp_send_cmd_async (AVFormatContext s, const char method, const char url, const char headers)
	Send a command to the RTSP server without waiting for the reply.

int	ff_rtsp_send_cmd_with_content (AVFormatContext s, const char method, const char url, const char headers, RTSPMessageHeader reply, unsigned char content_ptr, const unsigned char send_content, int send_content_length)
	Send a command to the RTSP server and wait for the reply.

int	ff_rtsp_send_cmd (AVFormatContext s, const char method, const char url, const char headers, RTSPMessageHeader reply, unsigned char *content_ptr)
	Send a command to the RTSP server and wait for the reply.

int	ff_rtsp_read_reply (AVFormatContext s, RTSPMessageHeader reply, unsigned char *content_ptr, int return_on_interleaved_data, const char method)
	Read a RTSP message from the server, or prepare to read data packets if we're reading data interleaved over the TCP/RTSP connection as well.

void	ff_rtsp_skip_packet (AVFormatContext *s)
	Skip a RTP/TCP interleaved packet.

int	ff_rtsp_connect (AVFormatContext *s)
	Connect to the RTSP server and set up the individual media streams.

void	ff_rtsp_close_streams (AVFormatContext *s)
	Close and free all streams within the RTSP (de)muxer.

void	ff_rtsp_close_connections (AVFormatContext *s)
	Close all connection handles within the RTSP (de)muxer.

int	ff_rtsp_setup_input_streams (AVFormatContext s, RTSPMessageHeader reply)
	Get the description of the stream and set up the RTSPStream child objects.

int	ff_rtsp_setup_output_streams (AVFormatContext s, const char addr)
	Announce the stream to the server and set up the RTSPStream child objects for each media stream.

int	ff_rtsp_parse_streaming_commands (AVFormatContext *s)
	Parse RTSP commands (OPTIONS, PAUSE and TEARDOWN) during streaming in listen mode.

int	ff_sdp_parse (AVFormatContext s, const char content)
	Parse an SDP description of streams by populating an RTSPState struct within the AVFormatContext; also allocate the RTP streams and the pollfd array used for UDP streams.

int	ff_rtsp_tcp_read_packet (AVFormatContext s, RTSPStream prtsp_st, uint8_t buf, int buf_size)
	Receive one RTP packet from an TCP interleaved RTSP stream.

int	ff_rtsp_tcp_write_packet (AVFormatContext s, RTSPStream rtsp_st)
	Send buffered packets over TCP.

int	ff_rtsp_fetch_packet (AVFormatContext s, AVPacket pkt)
	Receive one packet from the RTSPStreams set up in the AVFormatContext (which should contain a RTSPState struct as priv_data).

int	ff_rtsp_make_setup_request (AVFormatContext s, const char host, int port, int lower_transport, const char *real_challenge)
	Do the SETUP requests for each stream for the chosen lower transport mode.

void	ff_rtsp_undo_setup (AVFormatContext *s, int send_packets)
	Undo the effect of ff_rtsp_make_setup_request, close the transport_priv and rtp_handle fields.

int	ff_rtsp_open_transport_ctx (AVFormatContext s, RTSPStream rtsp_st)
	Open RTSP transport context.

Variables
const AVOption	ff_rtsp_options []

Macro Definition Documentation

#define RTSP_DEFAULT_PORT 554

Definition at line 72 of file rtsp.h.

Referenced by rtsp_listen().

#define RTSPS_DEFAULT_PORT 322

Definition at line 73 of file rtsp.h.

Referenced by rtsp_listen().

#define RTSP_MAX_TRANSPORTS 8

Definition at line 74 of file rtsp.h.

#define RTSP_TCP_MAX_PACKET_SIZE 1472

Definition at line 75 of file rtsp.h.

Referenced by ff_rtsp_open_transport_ctx(), ff_rtsp_tcp_write_packet(), http_prepare_data(), and rtp_new_av_stream().

#define RTSP_DEFAULT_NB_AUDIO_CHANNELS 1

Definition at line 76 of file rtsp.h.

#define RTSP_DEFAULT_AUDIO_SAMPLERATE 44100

Definition at line 77 of file rtsp.h.

#define RTSP_RTP_PORT_MIN 5000

Definition at line 78 of file rtsp.h.

#define RTSP_RTP_PORT_MAX 65000

Definition at line 79 of file rtsp.h.

#define RTSP_FLAG_FILTER_SRC 0x1

Filter incoming UDP packets - receive packets only from the right source address and port.

Definition at line 412 of file rtsp.h.

#define RTSP_FLAG_LISTEN 0x2

Wait for incoming connections.

Definition at line 415 of file rtsp.h.

Referenced by rtsp_read_close(), rtsp_read_header(), and rtsp_read_packet().

#define RTSP_FLAG_CUSTOM_IO 0x4

Do all IO via the AVIOContext.

Definition at line 416 of file rtsp.h.

#define RTSP_FLAG_RTCP_TO_SOURCE 0x8

Send RTCP packets to the source address of received packets.

Definition at line 417 of file rtsp.h.

#define RTSP_FLAG_PREFER_TCP 0x10

Try RTP via TCP first if possible.

Definition at line 419 of file rtsp.h.

Enumeration Type Documentation

enum RTSPLowerTransport

Network layer over which RTP/etc packet data will be transported.

Enumerator:

RTSP_LOWER_TRANSPORT_UDP	UDP/unicast.
RTSP_LOWER_TRANSPORT_TCP	TCP; interleaved in RTSP.
RTSP_LOWER_TRANSPORT_UDP_MULTICAST	UDP/multicast.
RTSP_LOWER_TRANSPORT_NB
RTSP_LOWER_TRANSPORT_HTTP	HTTP tunneled - not a proper transport mode as such, only for use via AVOptions.
RTSP_LOWER_TRANSPORT_CUSTOM	Custom IO - not a public option for lower_transport_mask, but set in the SDP demuxer based on a flag.

Definition at line 37 of file rtsp.h.

enum RTSPTransport

Packet profile of the data that we will be receiving.

Real servers commonly send RDT (although they can sometimes send RTP as well), whereas most others will send RTP.

Enumerator:

RTSP_TRANSPORT_RTP	Standards-compliant RTP.
RTSP_TRANSPORT_RDT	Realmedia Data Transport.
RTSP_TRANSPORT_RAW	Raw data (over UDP)
RTSP_TRANSPORT_NB

Definition at line 56 of file rtsp.h.

enum RTSPControlTransport

Transport mode for the RTSP data.

This may be plain, or tunneled, which is done over HTTP.

Enumerator:

RTSP_MODE_PLAIN	Normal RTSP.
RTSP_MODE_TUNNEL	RTSP over HTTP (tunneling)

Definition at line 67 of file rtsp.h.

enum RTSPClientState

Client state, i.e.

whether we are currently receiving data (PLAYING) or setup-but-not-receiving (PAUSED). State can be changed in applications by calling av_read_play/pause().

Enumerator:

RTSP_STATE_IDLE	not initialized
RTSP_STATE_STREAMING	initialized and sending/receiving data
RTSP_STATE_PAUSED	initialized, but not receiving data
RTSP_STATE_SEEKING	initialized, requesting a seek

Definition at line 195 of file rtsp.h.

enum RTSPServerType

Identify particular servers that require special handling, such as standards-incompliant "Transport:" lines in the SETUP request.

Enumerator:

RTSP_SERVER_RTP	Standards-compliant RTP-server.
RTSP_SERVER_REAL	Realmedia-style server.
RTSP_SERVER_WMS	Windows Media server.
RTSP_SERVER_NB

Definition at line 206 of file rtsp.h.

Function Documentation

void ff_rtsp_parse_line	(	RTSPMessageHeader *	reply,
		const char *	buf,
		RTSPState *	rt,
		const char *	method
	)

Referenced by rtsp_parse_request(), and rtsp_read_request().

int ff_rtsp_send_cmd_async	(	AVFormatContext *	s,
		const char *	method,
		const char *	url,
		const char *	headers
	)

Send a command to the RTSP server without waiting for the reply.

See Also: rtsp_send_cmd_with_content_async

Referenced by rtsp_read_close(), rtsp_read_packet(), and rtsp_write_close().

int ff_rtsp_send_cmd_with_content	(	AVFormatContext *	s,
		const char *	method,
		const char *	url,
		const char *	headers,
		RTSPMessageHeader *	reply,
		unsigned char **	content_ptr,
		const unsigned char *	send_content,
		int	send_content_length
	)

Send a command to the RTSP server and wait for the reply.

Parameters

s	RTSP (de)muxer context
method	the method for the request
url	the target url for the request
headers	extra header lines to include in the request
reply	pointer where the RTSP message header will be stored
content_ptr	pointer where the RTSP message body, if any, will be stored (length is in reply)
send_content	if non-null, the data to send as request body content
send_content_length	the length of the send_content data, or 0 if send_content is null

Returns: zero if success, nonzero otherwise

Referenced by ff_rtsp_setup_output_streams().

int ff_rtsp_send_cmd	(	AVFormatContext *	s,
		const char *	method,
		const char *	url,
		const char *	headers,
		RTSPMessageHeader *	reply,
		unsigned char **	content_ptr
	)

Send a command to the RTSP server and wait for the reply.

See Also: rtsp_send_cmd_with_content

Referenced by ff_rtsp_setup_input_streams(), rtsp_read_packet(), rtsp_read_pause(), rtsp_read_play(), and rtsp_write_record().

int ff_rtsp_read_reply	(	AVFormatContext *	s,
		RTSPMessageHeader *	reply,
		unsigned char **	content_ptr,
		int	return_on_interleaved_data,
		const char *	method
	)

Read a RTSP message from the server, or prepare to read data packets if we're reading data interleaved over the TCP/RTSP connection as well.

Parameters

s	RTSP (de)muxer context
reply	pointer where the RTSP message header will be stored
content_ptr	pointer where the RTSP message body, if any, will be stored (length is in reply)
return_on_interleaved_data	whether the function may return if we encounter a data marker ('$'), which precedes data packets over interleaved TCP/RTSP connections. If this is set, this function will return 1 after encountering a '$'. If it is not set, the function will skip any data packets (if they are encountered), until a reply has been fully parsed. If no more data is available without parsing a reply, it will return an error.
method	the RTSP method this is a reply to. This affects how some response headers are acted upon. May be NULL.

Returns: 1 if a data packets is ready to be received, -1 on error, and 0 on success.

Referenced by ff_rtsp_tcp_read_packet(), and rtsp_write_packet().

void ff_rtsp_skip_packet ( AVFormatContext * s )

Skip a RTP/TCP interleaved packet.

Referenced by rtsp_write_packet().

int ff_rtsp_connect ( AVFormatContext * s )

Connect to the RTSP server and set up the individual media streams.

This can be used for both muxers and demuxers.

Parameters

s	RTSP (de)muxer context

Returns: 0 on success, < 0 on error. Cleans up all allocations done within the function on error.

Referenced by rtsp_read_header(), and rtsp_write_header().

void ff_rtsp_close_streams ( AVFormatContext * s )

Close and free all streams within the RTSP (de)muxer.

Parameters

s	RTSP (de)muxer context

Definition at line 733 of file rtsp.c.

Referenced by rtsp_read_close(), rtsp_read_header(), rtsp_write_close(), and rtsp_write_header().

void ff_rtsp_close_connections ( AVFormatContext * s )

Close all connection handles within the RTSP (de)muxer.

Parameters

s	RTSP (de)muxer context

Referenced by rtsp_read_close(), rtsp_read_header(), rtsp_write_close(), and rtsp_write_header().

int ff_rtsp_setup_input_streams	(	AVFormatContext *	s,
		RTSPMessageHeader *	reply
	)

Get the description of the stream and set up the RTSPStream child objects.

The Require: attribute is needed for proper streaming from Realmedia servers.

Definition at line 587 of file rtspdec.c.

int ff_rtsp_setup_output_streams	(	AVFormatContext *	s,
		const char *	addr
	)

Announce the stream to the server and set up the RTSPStream child objects for each media stream.

Definition at line 46 of file rtspenc.c.

int ff_rtsp_parse_streaming_commands ( AVFormatContext * s )

Parse RTSP commands (OPTIONS, PAUSE and TEARDOWN) during streaming in listen mode.

Definition at line 458 of file rtspdec.c.

int ff_sdp_parse	(	AVFormatContext *	s,
		const char *	content
	)

Parse an SDP description of streams by populating an RTSPState struct within the AVFormatContext; also allocate the RTP streams and the pollfd array used for UDP streams.

Referenced by ff_rtsp_setup_input_streams(), and rtsp_read_announce().

int ff_rtsp_tcp_read_packet	(	AVFormatContext *	s,
		RTSPStream **	prtsp_st,
		uint8_t *	buf,
		int	buf_size
	)

Receive one RTP packet from an TCP interleaved RTSP stream.

Definition at line 744 of file rtspdec.c.

int ff_rtsp_tcp_write_packet	(	AVFormatContext *	s,
		RTSPStream *	rtsp_st
	)

Send buffered packets over TCP.

Definition at line 140 of file rtspenc.c.

Referenced by ff_rtsp_undo_setup(), and rtsp_write_packet().

int ff_rtsp_fetch_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

Receive one packet from the RTSPStreams set up in the AVFormatContext (which should contain a RTSPState struct as priv_data).

Referenced by rtsp_read_packet().

int ff_rtsp_make_setup_request	(	AVFormatContext *	s,
		const char *	host,
		int	port,
		int	lower_transport,
		const char *	real_challenge
	)

Do the SETUP requests for each stream for the chosen lower transport mode.

Returns: 0 on success, <0 on error, 1 if protocol is unavailable

Referenced by resetup_tcp().

void ff_rtsp_undo_setup	(	AVFormatContext *	s,
		int	send_packets
	)

Undo the effect of ff_rtsp_make_setup_request, close the transport_priv and rtp_handle fields.

Definition at line 699 of file rtsp.c.

Referenced by ff_rtsp_close_streams(), resetup_tcp(), and rtsp_write_close().

int ff_rtsp_open_transport_ctx	(	AVFormatContext *	s,
		RTSPStream *	rtsp_st
	)

Open RTSP transport context.

Definition at line 769 of file rtsp.c.

Referenced by rtsp_read_setup().

Variable Documentation

const AVOption ff_rtsp_options[]

Definition at line 80 of file rtsp.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation