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Data Structures | Macros | Typedefs | Functions
rtpdec.h File Reference
#include "libavcodec/avcodec.h"
#include "avformat.h"
#include "rtp.h"
#include "url.h"
#include "srtp.h"

Go to the source code of this file.

Data Structures

struct  RTPStatistics
 
struct  RTPDynamicProtocolHandler
 
struct  RTPPacket
 
struct  RTPDemuxContext
 

Macros

#define RTP_MIN_PACKET_LENGTH   12
 
#define RTP_MAX_PACKET_LENGTH   8192
 
#define RTP_REORDER_QUEUE_DEFAULT_SIZE   10
 
#define RTP_NOTS_VALUE   ((uint32_t)-1)
 
#define RTP_FLAG_KEY   0x1
 RTP packet contains a keyframe.
 
#define RTP_FLAG_MARKER   0x2
 RTP marker bit was set for this packet.
 

Typedefs

typedef int(* DynamicPayloadPacketHandlerProc )(AVFormatContext *ctx, PayloadContext *s, AVStream *st, AVPacket *pkt, uint32_t *timestamp, const uint8_t *buf, int len, uint16_t seq, int flags)
 Packet parsing for "private" payloads in the RTP specs.
 

Functions

RTPDemuxContextff_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)
 
int ff_rtp_parse_packet (RTPDemuxContext *s, AVPacket *pkt, uint8_t **buf, int len)
 Parse an RTP or RTCP packet directly sent as a buffer.
 
void ff_rtp_parse_close (RTPDemuxContext *s)
 
int64_t ff_rtp_queued_packet_time (RTPDemuxContext *s)
 
void ff_rtp_reset_packet_queue (RTPDemuxContext *s)
 
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.
 
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...
 
int ff_rtp_send_rtcp_feedback (RTPDemuxContext *s, URLContext *fd, AVIOContext *avio)
 
void ff_register_dynamic_payload_handler (RTPDynamicProtocolHandler *handler)
 
RTPDynamicProtocolHandlerff_rtp_handler_find_by_name (const char *name, enum AVMediaType codec_type)
 
RTPDynamicProtocolHandlerff_rtp_handler_find_by_id (int id, enum AVMediaType codec_type)
 
int ff_rtsp_next_attr_and_value (const char **p, char *attr, int attr_size, char *value, int value_size)
 
int ff_parse_fmtp (AVFormatContext *s, AVStream *stream, PayloadContext *data, const char *p, int(*parse_fmtp)(AVFormatContext *s, AVStream *stream, PayloadContext *data, char *attr, char *value))
 
void ff_register_rtp_dynamic_payload_handlers (void)
 
int ff_rtp_finalize_packet (AVPacket *pkt, AVIOContext **dyn_buf, int stream_idx)
 Close the dynamic buffer and make a packet from it.
 

Macro Definition Documentation

#define RTP_MIN_PACKET_LENGTH   12

Definition at line 35 of file rtpdec.h.

#define RTP_MAX_PACKET_LENGTH   8192

Definition at line 36 of file rtpdec.h.

Referenced by rtp_parse_mp4_au(), sap_fetch_packet(), and sap_read_header().

#define RTP_REORDER_QUEUE_DEFAULT_SIZE   10

Definition at line 38 of file rtpdec.h.

Referenced by ff_rtsp_open_transport_ctx().

#define RTP_NOTS_VALUE   ((uint32_t)-1)
#define RTP_FLAG_KEY   0x1

RTP packet contains a keyframe.

Definition at line 92 of file rtpdec.h.

Referenced by asfrtp_parse_packet(), ff_rdt_parse_packet(), qt_rtp_parse_packet(), and rdt_parse_packet().

#define RTP_FLAG_MARKER   0x2

Typedef Documentation

typedef int(* DynamicPayloadPacketHandlerProc)(AVFormatContext *ctx, PayloadContext *s, AVStream *st, AVPacket *pkt, uint32_t *timestamp, const uint8_t *buf, int len, uint16_t seq, int flags)

Packet parsing for "private" payloads in the RTP specs.

Parameters
ctxRTSP demuxer context
sstream context
ststream that this packet belongs to
pktpacket in which to write the parsed data
timestamppointer to the RTP timestamp of the input data, can be updated by the function if returning older, buffered data
bufpointer to raw RTP packet data
lenlength of buf
seqRTP sequence number of the packet
flagsflags from the RTP packet header (RTP_FLAG_*)

Definition at line 108 of file rtpdec.h.

Function Documentation

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 497 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 529 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 536 of file rtpdec.c.

Referenced by ff_rtsp_open_transport_ctx().

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
sRTP parse context.
pktreturned packet
bufptrpointer to the input buffer or NULL to read the next packets
lenbuffer 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 818 of file rtpdec.c.

void ff_rtp_parse_close ( RTPDemuxContext s)

Definition at line 831 of file rtpdec.c.

Referenced by ff_rtsp_undo_setup().

int64_t ff_rtp_queued_packet_time ( RTPDemuxContext s)

Definition at line 708 of file rtpdec.c.

void ff_rtp_reset_packet_queue ( RTPDemuxContext s)

Definition at line 665 of file rtpdec.c.

Referenced by ff_rtp_parse_close(), and rtsp_read_play().

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 361 of file rtpdec.c.

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 258 of file rtpdec.c.

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

Definition at line 429 of file rtpdec.c.

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

Definition at line 107 of file rtpdec.c.

RTPDynamicProtocolHandler* ff_rtp_handler_find_by_id ( int  id,
enum AVMediaType  codec_type 
)

Definition at line 119 of file rtpdec.c.

int ff_rtsp_next_attr_and_value ( const char **  p,
char *  attr,
int  attr_size,
char *  value,
int  value_size 
)

Referenced by ff_parse_fmtp().

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

Definition at line 67 of file rtpdec.c.

Referenced by av_register_all().

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 876 of file rtpdec.c.

Referenced by h261_handle_packet(), h263_handle_packet(), jpeg_parse_packet(), svq3_parse_packet(), vp8_handle_packet(), and xiph_handle_packet().