rtp.h File Reference

#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
#include "libavutil/mathematics.h"

Go to the source code of this file.

Macros
#define	RTP_PT_PRIVATE   96
#define	RTP_VERSION   2
#define	RTP_MAX_SDES   256
	maximum text length for SDES More...
#define	RTCP_TX_RATIO_NUM   5
#define	RTCP_TX_RATIO_DEN   1000
#define	RTP_XIPH_IDENT   0xfecdba
#define	RTP_PT_IS_RTCP(x)
#define	NTP_TO_RTP_FORMAT(x)   av_rescale((x), INT64_C(1) << 32, 1000000)

Enumerations
enum	RTCPType {   RTCP_FIR = 192, RTCP_NACK, RTCP_SMPTETC, RTCP_IJ,   RTCP_SR = 200, RTCP_RR, RTCP_SDES, RTCP_BYE,   RTCP_APP, RTCP_RTPFB, RTCP_PSFB, RTCP_XR,   RTCP_AVB, RTCP_RSI, RTCP_TOKEN }

Functions
int	ff_rtp_get_payload_type (AVFormatContext *fmt, AVCodecParameters *par, int idx)
	Return the payload type for a given stream used in the given format context. More...
int	ff_rtp_get_codec_info (AVCodecParameters *par, int payload_type)
	Initialize a codec context based on the payload type. More...
const char *	ff_rtp_enc_name (int payload_type)
	Return the encoding name (as defined in http://www.iana.org/assignments/rtp-parameters) for a given payload type. More...
enum AVCodecID	ff_rtp_codec_id (const char *buf, enum AVMediaType codec_type)
	Return the codec id for the given encoding name and codec type. More...

Macro Definition Documentation

RTP_PT_PRIVATE

#define RTP_PT_PRIVATE   96

Definition at line 77 of file rtp.h.

RTP_VERSION

#define RTP_VERSION   2

Definition at line 78 of file rtp.h.

RTP_MAX_SDES

#define RTP_MAX_SDES   256

maximum text length for SDES

Definition at line 79 of file rtp.h.

RTCP_TX_RATIO_NUM

#define RTCP_TX_RATIO_NUM   5

Definition at line 82 of file rtp.h.

RTCP_TX_RATIO_DEN

#define RTCP_TX_RATIO_DEN   1000

Definition at line 83 of file rtp.h.

RTP_XIPH_IDENT

#define RTP_XIPH_IDENT   0xfecdba

Definition at line 89 of file rtp.h.

RTP_PT_IS_RTCP

#define RTP_PT_IS_RTCP

(

x

)

Value:

                           (((x) >= RTCP_FIR && (x) <= RTCP_IJ) || \
                           ((x) >= RTCP_SR  && (x) <= RTCP_TOKEN))

Definition at line 110 of file rtp.h.

NTP_TO_RTP_FORMAT

#define NTP_TO_RTP_FORMAT

(

x

)

av_rescale((x), INT64_C(1) << 32, 1000000)

Definition at line 113 of file rtp.h.

Enumeration Type Documentation

RTCPType

enum RTCPType

Enumerator
RTCP_FIR
RTCP_NACK
RTCP_SMPTETC
RTCP_IJ
RTCP_SR
RTCP_RR
RTCP_SDES
RTCP_BYE
RTCP_APP
RTCP_RTPFB
RTCP_PSFB
RTCP_XR
RTCP_AVB
RTCP_RSI
RTCP_TOKEN

Definition at line 92 of file rtp.h.

Function Documentation

ff_rtp_get_payload_type()

int ff_rtp_get_payload_type	(	AVFormatContext *	fmt,
		AVCodecParameters *	par,
		int	idx
	)

Return the payload type for a given stream used in the given format context.

Static payload types are derived from the codec. Dynamic payload type are derived from the id field in AVStream. The format context private option payload_type overrides both.

Parameters

fmt	The context of the format
par	The codec parameters
idx	The stream index

Returns

The payload type (the 'PT' field in the RTP header).

Definition at line 90 of file rtp.c.

Referenced by ff_rtp_chain_mux_open(), and rtp_write_header().

ff_rtp_get_codec_info()

int ff_rtp_get_codec_info	(	AVCodecParameters *	par,
		int	payload_type
	)

Initialize a codec context based on the payload type.

Fill the codec_type and codec_id fields of a codec context with information depending on the payload type; for audio codecs, the channels and sample_rate fields are also filled.

Parameters

par	The codec parameters
payload_type	The payload type (the 'PT' field in the RTP header)

Returns

In case of unknown payload type or dynamic payload type, a negative value is returned; otherwise, 0 is returned

Definition at line 71 of file rtp.c.

ff_rtp_enc_name()

const char* ff_rtp_enc_name

(

int

payload_type

)

Return the encoding name (as defined in http://www.iana.org/assignments/rtp-parameters) for a given payload type.

Parameters

payload_type

The payload type (the 'PT' field in the RTP header)

Returns

In case of unknown payload type or dynamic payload type, a pointer to an empty string is returned; otherwise, a pointer to a string containing the encoding name is returned

Definition at line 132 of file rtp.c.

ff_rtp_codec_id()

enum AVCodecID ff_rtp_codec_id	(	const char *	buf,
		enum AVMediaType	codec_type
	)

Return the codec id for the given encoding name and codec type.

Parameters

buf	A pointer to the string containing the encoding name
codec_type	The codec type

Returns

In case of unknown encoding name, AV_CODEC_ID_NONE is returned; otherwise, the codec id is returned

Definition at line 143 of file rtp.c.