libavformat/rtp.c File Reference

#include <libavutil/opt.h>
#include "avformat.h"
#include "rtp.h"

Go to the source code of this file.

Functions
int	ff_rtp_get_codec_info (AVCodecContext *codec, int payload_type)
	Initialize a codec context based on the payload type.
int	ff_rtp_get_payload_type (AVFormatContext *fmt, AVCodecContext *codec)
	Return the payload type for a given codec used in the given format context.
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.
enum CodecID	ff_rtp_codec_id (const char *buf, enum AVMediaType codec_type)
	Return the codec id for the given encoding name and codec type.
Variables
struct {
int   pt
const char   enc_name [6]
enum AVMediaType   codec_type
enum CodecID   codec_id
int   clock_rate
int   audio_channels
}	AVRtpPayloadTypes []

---

Function Documentation

enum CodecID 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, CODEC_ID_NONE is returned; otherwise, the codec id is returned

Definition at line 133 of file rtp.c.

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 121 of file rtp.c.

Referenced by ff_rtp_parse_close(), and ff_rtp_parse_open().

int ff_rtp_get_codec_info	(	AVCodecContext *	codec,
		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:

	codec	The context of the codec
	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 74 of file rtp.c.

int ff_rtp_get_payload_type	(	AVFormatContext *	fmt,
		AVCodecContext *	codec
	)

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

Parameters:

	fmt	The context of the format
	codec	The context of the codec

Returns:

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

Definition at line 93 of file rtp.c.

Referenced by rtp_write_header().

---

Variable Documentation

int audio_channels

Definition at line 42 of file rtp.c.

Referenced by ff_rtp_get_codec_info(), and new_audio_stream().

struct { ... } AVRtpPayloadTypes[] [static]

Referenced by ff_rtp_codec_id(), ff_rtp_enc_name(), ff_rtp_get_codec_info(), and ff_rtp_get_payload_type().

int clock_rate

Definition at line 41 of file rtp.c.

Referenced by ff_rtp_get_codec_info().

enum CodecID codec_id

Definition at line 40 of file rtp.c.

enum AVMediaType codec_type

Definition at line 39 of file rtp.c.

Referenced by avcodec_string(), avi_read_header(), and build_feed_streams().

const char enc_name[6]

Definition at line 38 of file rtp.c.

Referenced by ff_rtp_codec_id().

int pt

Definition at line 37 of file rtp.c.

Referenced by ff_rtp_enc_name(), ff_rtp_get_codec_info(), vp5_parse_coeff(), vp5_parse_coeff_models(), vp6_decode_free(), vp6_parse_coeff(), vp6_parse_coeff_huffman(), and vp6_parse_coeff_models().