amsip sdp interface
[internal API for amsip (DO NOT USE)]

Functions
int	sdp_complete_message (am_call_t *ca, sdp_message_t *remote_sdp, osip_message_t *ack_or_183)
int	sdp_complete_200ok (am_call_t *ca, osip_message_t *answer)
int	_sdp_hold_call (sdp_message_t *local_sdp)
int	_sdp_off_hold_call (sdp_message_t *local_sdp)
int	_sdp_analyse_attribute (sdp_message_t *sdp, sdp_media_t *med)
int	_sdp_analyse_attribute_setup (sdp_message_t *sdp, sdp_media_t *med, char *setup)
int	_sdp_switch_to_codec (sdp_message_t *local_sdp, char *preferred_codec, int compress_more)
int	_sdp_add_video (am_call_t *ca, sdp_message_t *local_sdp)

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Function Documentation

int sdp_complete_message	(	am_call_t *	ca,
		sdp_message_t *	remote_sdp,
		osip_message_t *	ack_or_183
	)

Complete message with SDP.

Parameters:

	ca	call context.
	remote_sdp	sdp offer of negotiation.
	ack_or_183	SIP message where to add sdp answer

int sdp_complete_200ok	(	am_call_t *	ca,
		osip_message_t *	answer
	)

Complete message with SDP.

Parameters:

	ca	call context.
	answer	SIP message where to add sdp answer.

int _sdp_hold_call

(

sdp_message_t *

local_sdp

)

Modify SDP to put audio stream on hold (sendonly).

Parameters:

local_sdp

SDP message to modify.

int _sdp_off_hold_call

(

sdp_message_t *

local_sdp

)

Modify SDP to put audio stream off hold (sendrecv).

Parameters:

local_sdp

SDP message to modify.

int _sdp_analyse_attribute	(	sdp_message_t *	sdp,
		sdp_media_t *	med
	)

Get information on audio stream (sendonly, recvonly, sendrecv)

Parameters:

	sdp	SDP message.
	med	audio media.

int _sdp_analyse_attribute_setup	(	sdp_message_t *	sdp,
		sdp_media_t *	med,
		char *	setup
	)

Get setup attribute on audio stream (active, both, passive)

Parameters:

	sdp	SDP message.
	med	audio media.
	setup	string to receive attribute value.

int _sdp_switch_to_codec	(	sdp_message_t *	local_sdp,
		char *	preferred_codec,
		int	compress_more
	)

Modify SDP prefered media and parameter to increase/decrease compression.

ALPHA method: use with care!

Parameters:

	local_sdp	SDP message.
	preferred_codec	New prefered codec.
	compress_more	0 or 1.

int _sdp_add_video	(	am_call_t *	ca,
		sdp_message_t *	local_sdp
	)

Modify SDP and add video media proposal.

ALPHA method: NOT IMPLEMENTED!

Parameters:

	ca	call context
	local_sdp	SDP message.

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