osip_negotiation.h

这是我用vxwork编译成功的osip协议栈

 * the callback 'fcn_accept_audio_codec' is called with the specific payload.
 * @param payload The payload.
 * @param number_of_port The number of port (channel) for this codec.
 * @param proto The protocol.
 * @param c_nettype The network type in the 'c' field.
 * @param c_addrtype The address type in the 'c' field.
 * @param c_addr The address in the 'c' field.
 * @param c_addr_multicast_ttl The ttl for multicast address in the 'c' field.
 * @param c_addr_multicast_int The int for multicast address in the 'c' field.
 * @param a_rtpmap The rtpmap attribute in the 'a' field.
 */
  int osip_negotiation_add_support_for_audio_codec (osip_negotiation_t *,
						    char *payload,
						    char *number_of_port,
						    char *proto,
						    char *c_nettype,
						    char *c_addrtype,
						    char *c_addr,
						    char
						    *c_addr_multicast_ttl,
						    char
						    *c_addr_multicast_int,
						    char *a_rtpmap);
/**
 * Add a supported video codec.
 * Those codecs will be accepted as long as you return 0 when
 * the callback 'fcn_accept_video_codec' is called with the specific payload.
 * @param payload The payload.
 * @param number_of_port The number of port (channel) for this codec.
 * @param proto The protocol.
 * @param c_nettype The network type in the 'c' field.
 * @param c_addrtype The address type in the 'c' field.
 * @param c_addr The address in the 'c' field.
 * @param c_addr_multicast_ttl The ttl for multicast address in the 'c' field.
 * @param c_addr_multicast_int The int for multicast address in the 'c' field.
 * @param a_rtpmap The rtpmap attribute in the 'a' field.
 */
  int osip_negotiation_add_support_for_video_codec (osip_negotiation_t *,
						    char *payload,
						    char *number_of_port,
						    char *proto,
						    char *c_nettype,
						    char *c_addrtype,
						    char *c_addr,
						    char
						    *c_addr_multicast_ttl,
						    char
						    *c_addr_multicast_int,
						    char *a_rtpmap);
/**
 * Add a supported (non-audio and non-video) codec.
 * Those codecs will be accepted as long as you return 0 when
 * the callback 'fcn_accept_other_codec' is called with the specific payload.
 * @param payload The payload.
 * @param number_of_port The number of port (channel) for this codec.
 * @param proto The protocol.
 * @param c_nettype The network type in the 'c' field.
 * @param c_addrtype The address type in the 'c' field.
 * @param c_addr The address in the 'c' field.
 * @param c_addr_multicast_ttl The ttl for multicast address in the 'c' field.
 * @param c_addr_multicast_int The int for multicast address in the 'c' field.
 * @param a_rtpmap The rtpmap attribute in the 'a' field.
 */
  int osip_negotiation_add_support_for_other_codec (osip_negotiation_t *,
						    char *payload,
						    char *number_of_port,
						    char *proto,
						    char *c_nettype,
						    char *c_addrtype,
						    char *c_addr,
						    char
						    *c_addr_multicast_ttl,
						    char
						    *c_addr_multicast_int,
						    char *a_rtpmap);

#ifndef DOXYGEN
/**
 * Free resource in the global sdp_config..
 */
  int osip_negotiation_remove_audio_payloads (osip_negotiation_t * config);
/**
 * Free resource in the global sdp_config..
 */
  int osip_negotiation_remove_video_payloads (osip_negotiation_t * config);
/**
 * Free resource in the global sdp_config..
 */
  int osip_negotiation_remove_other_payloads (osip_negotiation_t * config);
#endif

/**
 * Set the callback for setting info ('i' field) in a local SDP packet.
 * This callback is called once each time we need an 'i' field.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_set_info (osip_negotiation_t *,
					 int (*fcn) (osip_negotiation_ctx_t *,
						     sdp_message_t *));
/**
 * Set the callback for setting a URI ('u' field) in a local SDP packet.
 * This callback is called once each time we need an 'u' field.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_set_uri (osip_negotiation_t *,
					int (*fcn) (osip_negotiation_ctx_t *,
						    sdp_message_t *));
/**
 * Set the callback for setting an email ('e' field) in a local SDP packet.
 * This callback is called once each time we need an 'e' field.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_set_emails (osip_negotiation_t *,
					   int (*fcn) (osip_negotiation_ctx_t
						       *, sdp_message_t *));
/**
 * Set the callback for setting a phone ('p' field) in a local SDP packet.
 * This callback is called once each time we need an 'p' field.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_set_phones (osip_negotiation_t *,
					   int (*fcn) (osip_negotiation_ctx_t
						       *, sdp_message_t *));
/**
 * Set the callback for setting an attribute ('a' field) in a local SDP packet.
 * This callback is called once each time we need an 'a' field.
 * @param fcn The callback.
 */
  int
    osip_negotiation_set_fcn_set_attributes (osip_negotiation_t *,
					     int (*fcn)
					     (osip_negotiation_ctx_t *,
					      sdp_message_t *, int));
/**
 * Set the callback used to accept a codec during a negotiation.
 * This callback is called once each time we need to accept a codec.
 * @param fcn The callback.
 */
  int
    osip_negotiation_set_fcn_accept_audio_codec (osip_negotiation_t *,
						 int (*fcn)
						 (osip_negotiation_ctx_t *,
						  char *, char *, int,
						  char *));
/**
 * Set the callback used to accept a codec during a negotiation.
 * This callback is called once each time we need to accept a codec.
 * @param fcn The callback.
 */
  int
    osip_negotiation_set_fcn_accept_video_codec (osip_negotiation_t *,
						 int (*fcn)
						 (osip_negotiation_ctx_t *,
						  char *, char *, int,
						  char *));
/**
 * Set the callback used to accept a codec during a negotiation.
 * This callback is called once each time we need to accept a codec.
 * @param fcn The callback.
 */
  int
    osip_negotiation_set_fcn_accept_other_codec (osip_negotiation_t *,
						 int (*fcn)
						 (osip_negotiation_ctx_t *,
						  char *, char *, char *,
						  char *));
/**
 * Set the callback for setting the port number ('m' field) in a local SDP packet.
 * This callback is called once each time a 'm' line is accepted.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_get_audio_port (osip_negotiation_t *,
					       char
					       *(*fcn) (osip_negotiation_ctx_t
							*, int));
/**
 * Set the callback for setting the port number ('m' field) in a local SDP packet.
 * This callback is called once each time a 'm' line is accepted.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_get_video_port (osip_negotiation_t *,
					       char
					       *(*fcn) (osip_negotiation_ctx_t
							*, int));
/**
 * Set the callback for setting the port number ('m' field) in a local SDP packet.
 * This callback is called once each time a 'm' line is accepted.
 * @param fcn The callback.
 */
  int osip_negotiation_set_fcn_get_other_port (osip_negotiation_t *,
					       char
					       *(*fcn) (osip_negotiation_ctx_t
							*, int));

/**
 * Start the automatic negotiation for a UA
 * NOTE: You can previously set context->mycontext to point to your
 * personal context. This way you'll get access to your personal context
 * in the callback and you can easily take the correct decisions.
 * After this method is called, the negotiation will happen and
 * callbacks will be called. You can modify, add, remove SDP fields,
 * and accept and refuse the codec from your preferred list by using
 * those callbacks.
 * Of course, after the negotiation happen, you can modify the
 * SDP packet if you wish to improve it or just refine some attributes.
 * @param ctx The context holding the remote SDP offer.
 */
  int osip_negotiation_ctx_execute_negotiation (osip_negotiation_t *,
						osip_negotiation_ctx_t * ctx);

/** Put the SDP message on hold in outgoing invite
 * @param ctx The element to work on.
 * @param sdp The sdp message to build.
 * @param audio_port The port for audio stream.
 * @param video_port The port for video stream.
 */
  int osip_negotiation_sdp_build_offer (osip_negotiation_t *,
					osip_negotiation_ctx_t * ctx,
					sdp_message_t ** sdp,
					char *audio_port, char *video_port);
/**
 *@internal
 */
  int __osip_negotiation_sdp_build_offer (osip_negotiation_t *,
					  osip_negotiation_ctx_t * ctx,
					  sdp_message_t ** sdp,
					  char *audio_port, char *video_port,
					  char *audio_codec,
					  char *video_codec);

/** Put the SDP message on hold in outgoing invite
 * @param sdp The sdp message to modify.
 */
  int osip_negotiation_sdp_message_put_on_hold (sdp_message_t * sdp);

/** Put the SDP message off hold in outgoing invite
 * @param sdp The sdp message to modify.
 */
  int osip_negotiation_sdp_message_put_off_hold (sdp_message_t * sdp);

/**
 * @internal
 * @}
 */


#ifdef __cplusplus
}
#endif

#endif /*_SDP_NEGOC_H_ */