#include "libavutil/mathematics.h"
#include "libavutil/avstring.h"
#include "libavutil/time.h"
#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "network.h"
#include "srtp.h"
#include "url.h"
#include "rtpdec.h"
#include "rtpdec_formats.h"

Macros
#define	MIN_FEEDBACK_INTERVAL 200000 /* 200 ms in us */

#define	RTP_SEQ_MOD (1 << 16)

Functions
void	ff_register_dynamic_payload_handler (RTPDynamicProtocolHandler *handler)

void	ff_register_rtp_dynamic_payload_handlers (void)

RTPDynamicProtocolHandler *	ff_rtp_handler_find_by_name (const char *name, enum AVMediaType codec_type)

RTPDynamicProtocolHandler *	ff_rtp_handler_find_by_id (int id, enum AVMediaType codec_type)

static int	rtcp_parse_packet (RTPDemuxContext s, const unsigned char buf, int len)

static void	rtp_init_statistics (RTPStatistics *s, uint16_t base_sequence)

static void	rtp_init_sequence (RTPStatistics *s, uint16_t seq)

static int	rtp_valid_packet_in_sequence (RTPStatistics *s, uint16_t seq)

static void	rtcp_update_jitter (RTPStatistics *s, uint32_t sent_timestamp, uint32_t arrival_timestamp)

int	ff_rtp_check_and_send_back_rr (RTPDemuxContext s, URLContext fd, AVIOContext *avio, int count)
	some rtp servers assume client is dead if they don't hear from them...

void	ff_rtp_send_punch_packets (URLContext *rtp_handle)
	Send a dummy packet on both port pairs to set up the connection state in potential NAT routers, so that we're able to receive packets.

static int	find_missing_packets (RTPDemuxContext s, uint16_t first_missing, uint16_t *missing_mask)

int	ff_rtp_send_rtcp_feedback (RTPDemuxContext s, URLContext fd, AVIOContext *avio)

RTPDemuxContext *	ff_rtp_parse_open (AVFormatContext s1, AVStream st, int payload_type, int queue_size)
	open a new RTP parse context for stream 'st'.

void	ff_rtp_parse_set_dynamic_protocol (RTPDemuxContext s, PayloadContext ctx, RTPDynamicProtocolHandler *handler)

void	ff_rtp_parse_set_crypto (RTPDemuxContext s, const char suite, const char *params)

static void	finalize_packet (RTPDemuxContext s, AVPacket pkt, uint32_t timestamp)
	This was the second switch in rtp_parse packet.

static int	rtp_parse_packet_internal (RTPDemuxContext s, AVPacket pkt, const uint8_t *buf, int len)

void	ff_rtp_reset_packet_queue (RTPDemuxContext *s)

static void	enqueue_packet (RTPDemuxContext s, uint8_t buf, int len)

static int	has_next_packet (RTPDemuxContext *s)

int64_t	ff_rtp_queued_packet_time (RTPDemuxContext *s)

static int	rtp_parse_queued_packet (RTPDemuxContext s, AVPacket pkt)

static int	rtp_parse_one_packet (RTPDemuxContext s, AVPacket pkt, uint8_t **bufptr, int len)

int	ff_rtp_parse_packet (RTPDemuxContext s, AVPacket pkt, uint8_t **bufptr, int len)
	Parse an RTP or RTCP packet directly sent as a buffer.

void	ff_rtp_parse_close (RTPDemuxContext *s)

int	ff_parse_fmtp (AVStream stream, PayloadContext data, const char p, int(parse_fmtp)(AVStream stream, PayloadContext data, char attr, char value))

int	ff_rtp_finalize_packet (AVPacket pkt, AVIOContext *dyn_buf, int stream_idx)
	Close the dynamic buffer and make a packet from it.

Variables
static RTPDynamicProtocolHandler	gsm_dynamic_handler

static RTPDynamicProtocolHandler	realmedia_mp3_dynamic_handler

static RTPDynamicProtocolHandler	speex_dynamic_handler

static RTPDynamicProtocolHandler	opus_dynamic_handler

static RTPDynamicProtocolHandler *	rtp_first_dynamic_payload_handler = NULL

Macro Definition Documentation

#define MIN_FEEDBACK_INTERVAL 200000 /* 200 ms in us */

Definition at line 33 of file rtpdec.c.

Referenced by ff_rtp_send_rtcp_feedback().

#define RTP_SEQ_MOD (1 << 16)

Definition at line 165 of file rtpdec.c.

Referenced by rtp_init_sequence(), and rtp_valid_packet_in_sequence().

Function Documentation

void ff_register_dynamic_payload_handler ( RTPDynamicProtocolHandler * handler )

Definition at line 61 of file rtpdec.c.

Referenced by ff_register_rdt_dynamic_payload_handlers(), and ff_register_rtp_dynamic_payload_handlers().

void ff_register_rtp_dynamic_payload_handlers ( void )

Definition at line 67 of file rtpdec.c.

Referenced by av_register_all().

RTPDynamicProtocolHandler* ff_rtp_handler_find_by_name	(	const char *	name,
		enum AVMediaType	codec_type
	)

Definition at line 105 of file rtpdec.c.

RTPDynamicProtocolHandler* ff_rtp_handler_find_by_id	(	int	id,
		enum AVMediaType	codec_type
	)

Definition at line 117 of file rtpdec.c.

static int rtcp_parse_packet	(	RTPDemuxContext *	s,
		const unsigned char *	buf,
		int	len
	)

static

Definition at line 129 of file rtpdec.c.

Referenced by rtp_parse_one_packet().

static void rtp_init_statistics	(	RTPStatistics *	s,
		uint16_t	base_sequence
	)

static

Definition at line 167 of file rtpdec.c.

Referenced by ff_rtp_parse_open().

static void rtp_init_sequence	(	RTPStatistics *	s,
		uint16_t	seq
	)

static

Definition at line 178 of file rtpdec.c.

Referenced by rtp_valid_packet_in_sequence().

static int rtp_valid_packet_in_sequence	(	RTPStatistics *	s,
		uint16_t	seq
	)

static

Definition at line 192 of file rtpdec.c.

Referenced by rtp_parse_packet_internal().

static void rtcp_update_jitter	(	RTPStatistics *	s,
		uint32_t	sent_timestamp,
		uint32_t	arrival_timestamp
	)

static

Definition at line 238 of file rtpdec.c.

Referenced by rtp_parse_one_packet().

int ff_rtp_check_and_send_back_rr	(	RTPDemuxContext *	s,
		URLContext *	fd,
		AVIOContext *	avio,
		int	count
	)

some rtp servers assume client is dead if they don't hear from them...

so we send a Receiver Report to the provided URLContext or AVIOContext (we don't have access to the rtcp handle from here)

Definition at line 256 of file rtpdec.c.

void ff_rtp_send_punch_packets ( URLContext * rtp_handle )

Send a dummy packet on both port pairs to set up the connection state in potential NAT routers, so that we're able to receive packets.

Note, this only works if the NAT router doesn't remap ports. This isn't a standardized procedure, but it works in many cases in practice.

The same routine is used with RDT too, even if RDT doesn't use normal RTP packets otherwise.

Definition at line 359 of file rtpdec.c.

static int find_missing_packets	(	RTPDemuxContext *	s,
		uint16_t *	first_missing,
		uint16_t *	missing_mask
	)

static

Definition at line 397 of file rtpdec.c.

Referenced by ff_rtp_send_rtcp_feedback().

int ff_rtp_send_rtcp_feedback	(	RTPDemuxContext *	s,
		URLContext *	fd,
		AVIOContext *	avio
	)

Definition at line 427 of file rtpdec.c.

RTPDemuxContext* ff_rtp_parse_open	(	AVFormatContext *	s1,
		AVStream *	st,
		int	payload_type,
		int	queue_size
	)

open a new RTP parse context for stream 'st'.

'st' can be NULL for MPEG2-TS streams.

Definition at line 495 of file rtpdec.c.

Referenced by ff_rtsp_open_transport_ctx().

void ff_rtp_parse_set_dynamic_protocol	(	RTPDemuxContext *	s,
		PayloadContext *	ctx,
		RTPDynamicProtocolHandler *	handler
	)

Definition at line 527 of file rtpdec.c.

Referenced by ff_rtsp_open_transport_ctx().

void ff_rtp_parse_set_crypto	(	RTPDemuxContext *	s,
		const char *	suite,
		const char *	params
	)

Definition at line 534 of file rtpdec.c.

Referenced by ff_rtsp_open_transport_ctx().

static void finalize_packet	(	RTPDemuxContext *	s,
		AVPacket *	pkt,
		uint32_t	timestamp
	)

static

This was the second switch in rtp_parse packet.

Normalizes time, if required, sets stream_index, etc.

Definition at line 545 of file rtpdec.c.

Referenced by rtp_parse_one_packet(), and rtp_parse_packet_internal().

static int rtp_parse_packet_internal	(	RTPDemuxContext *	s,
		AVPacket *	pkt,
		const uint8_t *	buf,
		int	len
	)

static

Definition at line 580 of file rtpdec.c.

Referenced by rtp_parse_one_packet(), and rtp_parse_queued_packet().

void ff_rtp_reset_packet_queue ( RTPDemuxContext * s )

Definition at line 663 of file rtpdec.c.

Referenced by ff_rtp_parse_close(), and rtsp_read_play().

static void enqueue_packet	(	RTPDemuxContext *	s,
		uint8_t *	buf,
		int	len
	)

static

Definition at line 676 of file rtpdec.c.

Referenced by rtp_parse_one_packet().

static int has_next_packet ( RTPDemuxContext * s )

static

Definition at line 701 of file rtpdec.c.

Referenced by ff_rtp_parse_packet(), and rtp_parse_queued_packet().

int64_t ff_rtp_queued_packet_time ( RTPDemuxContext * s )

Definition at line 706 of file rtpdec.c.

static int rtp_parse_queued_packet	(	RTPDemuxContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 711 of file rtpdec.c.

Referenced by ff_rtp_parse_packet(), and rtp_parse_one_packet().

static int rtp_parse_one_packet	(	RTPDemuxContext *	s,
		AVPacket *	pkt,
		uint8_t **	bufptr,
		int	len
	)

static

Definition at line 733 of file rtpdec.c.

Referenced by ff_rtp_parse_packet().

int ff_rtp_parse_packet	(	RTPDemuxContext *	s,
		AVPacket *	pkt,
		uint8_t **	bufptr,
		int	len
	)

Parse an RTP or RTCP packet directly sent as a buffer.

Parameters

s	RTP parse context.
pkt	returned packet
bufptr	pointer to the input buffer or NULL to read the next packets
len	buffer len

Returns: 0 if a packet is returned, 1 if a packet is returned and more can follow (use buf as NULL to read the next). -1 if no packet (error or no more packet).

Definition at line 816 of file rtpdec.c.

void ff_rtp_parse_close ( RTPDemuxContext * s )

Definition at line 829 of file rtpdec.c.

Referenced by ff_rtsp_undo_setup().

int ff_parse_fmtp	(	AVStream *	stream,
		PayloadContext *	data,
		const char *	p,
		int()(AVStream stream, PayloadContext data, char attr, char *value)	parse_fmtp
	)

Definition at line 836 of file rtpdec.c.

Referenced by amr_parse_sdp_line(), ilbc_parse_sdp_line(), latm_parse_sdp_line(), parse_h264_sdp_line(), parse_sdp_line(), and xiph_parse_sdp_line().

int ff_rtp_finalize_packet	(	AVPacket *	pkt,
		AVIOContext **	dyn_buf,
		int	stream_idx
	)

Close the dynamic buffer and make a packet from it.

Definition at line 872 of file rtpdec.c.

Referenced by h263_handle_packet(), jpeg_parse_packet(), svq3_parse_packet(), vp8_handle_packet(), and xiph_handle_packet().

Variable Documentation

RTPDynamicProtocolHandler gsm_dynamic_handler

static

Initial value:

= {
    .enc_name   = "GSM",
    .codec_type = AVMEDIA_TYPE_AUDIO,
    .codec_id   = AV_CODEC_ID_GSM,
}

Definition at line 35 of file rtpdec.c.

RTPDynamicProtocolHandler realmedia_mp3_dynamic_handler

static

Initial value:

= {
    .enc_name   = "X-MP3-draft-00",
    .codec_type = AVMEDIA_TYPE_AUDIO,
    .codec_id   = AV_CODEC_ID_MP3ADU,
}

Definition at line 41 of file rtpdec.c.

RTPDynamicProtocolHandler speex_dynamic_handler

static

Initial value:

= {
    .enc_name   = "speex",
    .codec_type = AVMEDIA_TYPE_AUDIO,
    .codec_id   = AV_CODEC_ID_SPEEX,
}

Definition at line 47 of file rtpdec.c.

RTPDynamicProtocolHandler opus_dynamic_handler

static

Initial value:

= {
    .enc_name   = "opus",
    .codec_type = AVMEDIA_TYPE_AUDIO,
    .codec_id   = AV_CODEC_ID_OPUS,
}

Definition at line 53 of file rtpdec.c.

RTPDynamicProtocolHandler* rtp_first_dynamic_payload_handler = NULL

static

Definition at line 59 of file rtpdec.c.

Referenced by ff_register_dynamic_payload_handler().

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation