示例#1
0
/** Generate MRCP descriptor by SDP session */
MRCP_DECLARE(mrcp_session_descriptor_t*) mrcp_descriptor_generate_by_sdp_session(const sdp_session_t *sdp, const char *force_destination_ip, apr_pool_t *pool)
{
	sdp_media_t *sdp_media;
	mrcp_session_descriptor_t *descriptor;

	if(!sdp) {
		apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Invalid SDP Message");
		return NULL;
	}
	
	descriptor = mrcp_session_descriptor_create(pool);

	if(force_destination_ip) {
		apt_string_assign(&descriptor->ip,force_destination_ip,pool);
	}
	else if(sdp->sdp_connection) {
		apt_string_assign(&descriptor->ip,sdp->sdp_connection->c_address,pool);
	}

	for(sdp_media=sdp->sdp_media; sdp_media; sdp_media=sdp_media->m_next) {
		switch(sdp_media->m_type) {
			case sdp_media_audio:
			{
				mpf_rtp_media_descriptor_t *media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
				mpf_rtp_media_descriptor_init(media);
				media->id = mrcp_session_audio_media_add(descriptor,media);
				mpf_rtp_media_generate(media,sdp_media,&descriptor->ip,pool);
				break;
			}
			case sdp_media_video:
			{
				mpf_rtp_media_descriptor_t *media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
				mpf_rtp_media_descriptor_init(media);
				media->id = mrcp_session_video_media_add(descriptor,media);
				mpf_rtp_media_generate(media,sdp_media,&descriptor->ip,pool);
				break;
			}
			case sdp_media_application:
			{
				mrcp_control_descriptor_t *control_media = mrcp_control_descriptor_create(pool);
				control_media->id = mrcp_session_control_media_add(descriptor,control_media);
				mrcp_control_media_generate(control_media,sdp_media,&descriptor->ip,pool);
				break;
			}
			default:
				apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Not Supported SDP Media [%s]", sdp_media->m_type_name);
				break;
		}
	}
	return descriptor;
}
apt_bool_t mrcp_client_session_discover_response_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
	apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Resources Discovered %s", session->base.name);
	if(!session->active_request) {
		return FALSE;
	}

	if(!descriptor) {
		/* raise app response */
		session->status = MRCP_SIG_STATUS_CODE_FAILURE;
		return mrcp_app_sig_response_raise(session,TRUE);
	}

	if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
		if(descriptor->resource_state == TRUE) {
			mrcp_control_descriptor_t *control_media;
			if(!session->answer) {
				session->answer = descriptor;
			}
			control_media = mrcp_control_descriptor_create(session->base.pool);
			control_media->id = mrcp_session_control_media_add(session->answer,control_media);
			control_media->resource_name = descriptor->resource_name;
		}
	}
	else {
		session->answer = descriptor;
	}

	if(mrcp_client_session_subrequest_remove(session) == TRUE) {
		mrcp_app_message_t *response;
		response = mrcp_client_app_response_create(session->active_request,MRCP_SIG_STATUS_CODE_SUCCESS,session->base.pool);
		response->descriptor = session->answer;
		session->answer = NULL;
		apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Raise App Resource Discovery Response %s", session->base.name);
		session->application->handler(response);

		session->active_request = apt_list_pop_front(session->request_queue);
		if(session->active_request) {
			mrcp_app_request_dispatch(session,session->active_request);
		}
	}
	return TRUE;
}
static apt_bool_t mrcp_client_channel_add(mrcp_client_session_t *session, mrcp_channel_t *channel)
{
	mpf_rtp_termination_descriptor_t *rtp_descriptor = NULL;
	rtp_termination_slot_t *slot;
	apr_pool_t *pool = session->base.pool;
	mrcp_profile_t *profile = session->profile;
	if(mrcp_client_channel_find(session,channel,NULL) == TRUE) {
		/* update */
		return mrcp_client_channel_modify(session,channel,TRUE);
	}

	if(!session->offer) {
		session->offer = mrcp_session_descriptor_create(pool);
	}
	
	mrcp_client_session_state_set(session,SESSION_STATE_GENERATING_OFFER);

	if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
		session->offer->resource_name = channel->resource->name;
		session->offer->resource_state = TRUE;
	}
	else {
		mrcp_control_descriptor_t *control_media;
		if(!channel->control_channel) {
			channel->control_channel = mrcp_client_control_channel_create(profile->connection_agent,channel,pool);
			mrcp_client_control_channel_log_obj_set(channel->control_channel,session->base.log_obj);
		}
		control_media = mrcp_control_offer_create(pool);
		control_media->id = mrcp_session_control_media_add(session->offer,control_media);
		mrcp_cmid_add(control_media->cmid_arr,session->offer->control_media_arr->nelts);
		control_media->resource_name = channel->resource->name;
		if(mrcp_client_control_channel_add(channel->control_channel,control_media) == TRUE) {
			channel->waiting_for_channel = TRUE;
			mrcp_client_session_subrequest_add(session);
		}
	}

	apt_obj_log(APT_LOG_MARK,APT_PRIO_NOTICE,session->base.log_obj,"Add Control Channel "APT_NAMESIDRES_FMT,
					MRCP_SESSION_NAMESID(session),
					channel->resource->name.buf);
	/* add control channel */
	APR_ARRAY_PUSH(session->channels,mrcp_channel_t*) = channel;

	/* add rtp termination slot */
	slot = apr_array_push(session->terminations);
	slot->waiting = FALSE;
	slot->termination = NULL;
	slot->descriptor = NULL;
	slot->channel = channel;
	slot->id = 0;

	if(channel->termination) {
		/* media termination mode */
		mpf_termination_t *termination;
		mpf_audio_stream_t *audio_stream;

		if(!session->context) {
			/* create media context first */
			session->context = mpf_engine_context_create(
				profile->media_engine,
				session->base.name,
				session,5,pool);
		}
		apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Add Media Termination "APT_NAMESIDRES_FMT,
			MRCP_SESSION_NAMESID(session),
			mpf_termination_name_get(channel->termination));
		if(mpf_engine_termination_message_add(
				profile->media_engine,
				MPF_ADD_TERMINATION,session->context,channel->termination,NULL,
				&session->mpf_task_msg) == TRUE) {
			channel->waiting_for_termination = TRUE;
			mrcp_client_session_subrequest_add(session);
		}

		/* initialize rtp descriptor */
		rtp_descriptor = apr_palloc(pool,sizeof(mpf_rtp_termination_descriptor_t));
		mpf_rtp_termination_descriptor_init(rtp_descriptor);
		rtp_descriptor->audio.settings = profile->rtp_settings;
		audio_stream = mpf_termination_audio_stream_get(channel->termination);
		if(audio_stream) {
			mpf_rtp_media_descriptor_t *media;
			media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
			mpf_rtp_media_descriptor_init(media);
			media->state = MPF_MEDIA_ENABLED;
			media->direction = mpf_stream_reverse_direction_get(audio_stream->direction);
			rtp_descriptor->audio.local = media;
			if(audio_stream->capabilities) {
				rtp_descriptor->audio.capabilities = mpf_stream_capabilities_clone(audio_stream->capabilities,pool);
				rtp_descriptor->audio.capabilities->direction = media->direction;
			}
		}

		/* create rtp termination */
		termination = mpf_termination_create(profile->rtp_termination_factory,session,pool);
		slot->termination = termination;
		apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Add Media Termination "APT_NAMESIDRES_FMT, 
			MRCP_SESSION_NAMESID(session),
			mpf_termination_name_get(termination));

		/* send add termination request (add to media context) */
		if(mpf_engine_termination_message_add(
				profile->media_engine,
				MPF_ADD_TERMINATION,session->context,termination,rtp_descriptor,
				&session->mpf_task_msg) == TRUE) {
			slot->waiting = TRUE;
			mrcp_client_session_subrequest_add(session);
		}
		mpf_engine_message_send(profile->media_engine,&session->mpf_task_msg);
	}
	else {
		/* bypass media mode */
		if(channel->rtp_termination_slot) {
			rtp_descriptor = channel->rtp_termination_slot->descriptor;
			if(rtp_descriptor) {
				if(rtp_descriptor->audio.local) {
					session->offer->ip = rtp_descriptor->audio.local->ip;
					session->offer->ext_ip = rtp_descriptor->audio.local->ext_ip;
					rtp_descriptor->audio.local->id = mrcp_session_audio_media_add(session->offer,rtp_descriptor->audio.local);
					rtp_descriptor->audio.local->mid = session->offer->audio_media_arr->nelts;
					slot->id = session->offer->audio_media_arr->nelts - 1;
				}
			}
		}
	}

	slot->descriptor = rtp_descriptor;
	channel->rtp_termination_slot = slot;

	if(!session->subrequest_count) {
		/* send offer to server */
		mrcp_client_session_offer_send(session);
	}
	return TRUE;
}
示例#4
0
static apt_bool_t mrcp_client_channel_add(mrcp_client_session_t *session, mrcp_channel_t *channel)
{
	mrcp_channel_t **channel_slot;
	mrcp_control_descriptor_t *control_media;
	mpf_rtp_termination_descriptor_t *rtp_descriptor = NULL;
	rtp_termination_slot_t *termination_slot;
	apr_pool_t *pool = session->base.pool;
	mrcp_profile_t *profile = session->profile;
	if(mrcp_client_channel_find(session,channel,NULL) == TRUE) {
		/* update */
		return mrcp_client_channel_modify(session,channel,TRUE);
	}

	if(!session->offer) {
		session->base.signaling_agent = profile->signaling_agent;
		session->base.signaling_agent->create_client_session(&session->base);

		session->offer = mrcp_session_descriptor_create(pool);
		session->context = mpf_context_create(session,5,pool);
	}
	if(!channel->resource) {
		channel->resource = mrcp_resource_get(profile->resource_factory,channel->resource_id);
		if(!channel->resource) {
			return FALSE;
		}
		channel->resource_name = mrcp_resource_name_get(profile->resource_factory,channel->resource_id);
		if(!channel->resource_name) {
			return FALSE;
		}
	}
	if(session->base.signaling_agent->mrcp_version == MRCP_VERSION_1) {
		session->offer->resource_name = *channel->resource_name;
		session->offer->resource_state = TRUE;
	}
	else {
		if(!channel->control_channel) {
			channel->control_channel = mrcp_client_control_channel_create(profile->connection_agent,channel,pool);
		}
		control_media = mrcp_control_offer_create(pool);
		control_media->id = mrcp_session_control_media_add(session->offer,control_media);
		control_media->cmid = session->offer->control_media_arr->nelts;
		control_media->resource_name = *channel->resource_name;
		if(mrcp_client_control_channel_add(channel->control_channel,control_media) == TRUE) {
			channel->waiting_for_channel = TRUE;
			session->offer_flag_count++;
		}
	}

	/* add to channel array */
	apt_log(APT_LOG_MARK,APT_PRIO_NOTICE,"Add Control Channel <%s@%s>",
					mrcp_session_str(session),
					channel->resource_name->buf);
	channel_slot = apr_array_push(session->channels);
	*channel_slot = channel;

	if(channel->termination) {
		if(mrcp_client_mpf_request_send(profile->media_engine,MPF_COMMAND_ADD,session->context,channel->termination,NULL) == TRUE) {
			channel->waiting_for_termination = TRUE;
			session->offer_flag_count++;
		}
	}

	if(channel->rtp_termination_slot) {
		rtp_descriptor = channel->rtp_termination_slot->descriptor;
	}	
	/* add to rtp termination array */
	apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Add RTP Termination");
	termination_slot = apr_array_push(session->terminations);
	termination_slot->waiting = FALSE;
	termination_slot->termination = NULL;
	termination_slot->descriptor = NULL;
	if(rtp_descriptor) {
		if(rtp_descriptor->audio.local) {
			session->offer->ip = rtp_descriptor->audio.local->base.ip;
			rtp_descriptor->audio.local->base.id = mrcp_session_audio_media_add(session->offer,rtp_descriptor->audio.local);
			rtp_descriptor->audio.local->mid = session->offer->audio_media_arr->nelts;
		}
	}
	else {
		/* create rtp termination */
		mpf_termination_t *termination = mpf_termination_create(profile->rtp_termination_factory,session,session->base.pool);
		termination_slot->termination = termination;

		/* initialize rtp descriptor */
		rtp_descriptor = apr_palloc(pool,sizeof(mpf_rtp_termination_descriptor_t));
		mpf_rtp_termination_descriptor_init(rtp_descriptor);
		if(channel->termination && channel->termination->audio_stream) {
			mpf_rtp_media_descriptor_t *media;
			media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
			mpf_rtp_media_descriptor_init(media);
			media->base.state = MPF_MEDIA_ENABLED;
			media->mode = mpf_stream_mode_negotiate(channel->termination->audio_stream->mode);
			rtp_descriptor->audio.local = media;
		}
		/* send add termination request (add to media context) */
		if(mrcp_client_mpf_request_send(profile->media_engine,MPF_COMMAND_ADD,session->context,termination,rtp_descriptor) == TRUE) {
			termination_slot->waiting = TRUE;
			session->offer_flag_count++;
		}
	}
	termination_slot->descriptor = rtp_descriptor;
	channel->rtp_termination_slot = termination_slot;

	if(!session->offer_flag_count) {
		/* send offer to server */
		mrcp_client_session_offer_send(session);
	}
	return TRUE;
}