h263_packetizer.h File Reference

Packetizes/unpacketizes H.263 bitstream into RTP payload. More...

Data Structures
struct	pjmedia_h263_packetizer_cfg

Typedefs
typedef struct pjmedia_h263_packetizer	pjmedia_h263_packetizer

Enumerations
enum	pjmedia_h263_packetizer_mode {   PJMEDIA_H263_PACKETIZER_MODE_RFC4629 ,   PJMEDIA_H263_PACKETIZER_MODE_RFC2190 }

Functions
pj_status_t	pjmedia_h263_packetizer_create (pj_pool_t *pool, const pjmedia_h263_packetizer_cfg *cfg, pjmedia_h263_packetizer **p_pktz)
pj_status_t	pjmedia_h263_packetize (pjmedia_h263_packetizer *pktz, pj_uint8_t *bits, pj_size_t bits_len, unsigned *bits_pos, const pj_uint8_t **payload, pj_size_t *payload_len)
pj_status_t	pjmedia_h263_unpacketize (pjmedia_h263_packetizer *pktz, const pj_uint8_t *payload, pj_size_t payload_len, pj_uint8_t *bits, pj_size_t bits_size, unsigned *bits_pos)

Typedef Documentation

pjmedia_h263_packetizer

typedef struct pjmedia_h263_packetizer pjmedia_h263_packetizer

Opaque declaration for H.263 packetizer.

Enumeration Type Documentation

pjmedia_h263_packetizer_mode

enum pjmedia_h263_packetizer_mode

Enumeration of H.263 packetization modes.

Enumerator
PJMEDIA_H263_PACKETIZER_MODE_RFC4629	H.263 RTP packetization using RFC 4629.
PJMEDIA_H263_PACKETIZER_MODE_RFC2190	H.263 RTP packetization using legacy RFC 2190. This is currently not supported.

Function Documentation

pjmedia_h263_packetizer_create()

pj_status_t pjmedia_h263_packetizer_create	(	pj_pool_t *	pool,
		const pjmedia_h263_packetizer_cfg *	cfg,
		pjmedia_h263_packetizer **	p_pktz
	)

Create H.263 packetizer.

Parameters

pool	The memory pool.
cfg	Packetizer settings, if NULL, default setting will be used.
p_pktz	Pointer to receive the packetizer.

Returns

PJ_SUCCESS on success.

pjmedia_h263_packetize()

pj_status_t pjmedia_h263_packetize	(	pjmedia_h263_packetizer *	pktz,
		pj_uint8_t *	bits,
		pj_size_t	bits_len,
		unsigned *	bits_pos,
		const pj_uint8_t **	payload,
		pj_size_t *	payload_len
	)

Generate an RTP payload from a H.263 picture bitstream. Note that this function will apply in-place processing, so the bitstream may be modified during the packetization.

Parameters

pktz	The packetizer.
bits	The picture bitstream to be packetized.
bits_len	The length of the bitstream.
bits_pos	The bitstream offset to be packetized.
payload	The output payload.
payload_len	The output payload length.

Returns

PJ_SUCCESS on success.

pjmedia_h263_unpacketize()

pj_status_t pjmedia_h263_unpacketize	(	pjmedia_h263_packetizer *	pktz,
		const pj_uint8_t *	payload,
		pj_size_t	payload_len,
		pj_uint8_t *	bits,
		pj_size_t	bits_size,
		unsigned *	bits_pos
	)

Append an RTP payload to an H.263 picture bitstream. Note that in case of noticing packet lost, application should keep calling this function with payload pointer set to NULL, as the packetizer need to update its internal state.

Parameters

pktz	The packetizer.
payload	The payload to be unpacketized.
payload_len	The payload length.
bits	The bitstream buffer.
bits_size	The bitstream buffer size.
bits_pos	The bitstream offset to put the unpacketized payload in the bitstream, upon return, this will be updated to the latest offset as a result of the unpacketized payload.

Returns

PJ_SUCCESS on success.

References PJ_END_DECL.