/** Create demo RTP termination descriptor */
mpf_rtp_termination_descriptor_t* demo_rtp_descriptor_create(apr_pool_t *pool)
{
mpf_codec_descriptor_t *codec_descriptor;
mpf_rtp_media_descriptor_t *media;
/* create rtp descriptor */
mpf_rtp_termination_descriptor_t *rtp_descriptor = apr_palloc(pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
/* create rtp local media */
media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
mpf_rtp_media_descriptor_init(media);
apt_string_assign(&media->ip,"127.0.0.1",pool);
media->port = 6000;
media->state = MPF_MEDIA_ENABLED;
media->direction = STREAM_DIRECTION_RECEIVE;
/* initialize codec list */
mpf_codec_list_init(&media->codec_list,2,pool);
/* set codec descriptor */
codec_descriptor = mpf_codec_list_add(&media->codec_list);
if(codec_descriptor) {
codec_descriptor->payload_type = 0;
}
/* set another codec descriptor */
codec_descriptor = mpf_codec_list_add(&media->codec_list);
if(codec_descriptor) {
codec_descriptor->payload_type = 96;
apt_string_set(&codec_descriptor->name,"PCMU");
codec_descriptor->sampling_rate = 16000;
codec_descriptor->channel_count = 1;
}
rtp_descriptor->audio.local = media;
return rtp_descriptor;
}
static apt_bool_t mrcp_client_av_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
rtp_termination_slot_t *slot;
int i;
int count = session->terminations->nelts;
if(count != descriptor->audio_media_arr->nelts) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Number of terminations [%d] != Number of audio media in answer [%d]",
count,descriptor->audio_media_arr->nelts);
count = descriptor->audio_media_arr->nelts;
}
/* update existing terminations */
for(i=0; i<count; i++) {
mpf_rtp_media_descriptor_t *remote_media;
mpf_rtp_termination_descriptor_t *rtp_descriptor;
/* get existing termination */
slot = &APR_ARRAY_IDX(session->terminations,i,rtp_termination_slot_t);
if(!slot) continue;
remote_media = mrcp_session_audio_media_get(descriptor,i);
if(slot->descriptor) {
slot->descriptor->audio.remote = remote_media;
}
if(slot->termination) {
/* construct termination descriptor */
rtp_descriptor = apr_palloc(session->base.pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.local = NULL;
rtp_descriptor->audio.remote = remote_media;
/* send modify termination request */
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Modify Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(slot->termination));
if(mpf_engine_termination_message_add(
session->profile->media_engine,
MPF_MODIFY_TERMINATION,session->context,slot->termination,rtp_descriptor,
&session->mpf_task_msg) == TRUE) {
slot->waiting = TRUE;
mrcp_client_session_subrequest_add(session);
}
if(slot->channel && slot->channel->termination) {
if(mpf_engine_assoc_message_add(
session->profile->media_engine,
MPF_ADD_ASSOCIATION,session->context,slot->termination,slot->channel->termination,
&session->mpf_task_msg) == TRUE) {
mrcp_client_session_subrequest_add(session);
}
}
}
}
return TRUE;
}
static apt_bool_t mrcp_client_av_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
rtp_termination_slot_t *slot;
int i;
int count = session->terminations->nelts;
if(count != descriptor->audio_media_arr->nelts) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Number of terminations [%d] != Number of audio media in answer [%d]",
count,descriptor->audio_media_arr->nelts);
count = descriptor->audio_media_arr->nelts;
}
/* update existing terminations */
for(i=0; i<count; i++) {
mpf_rtp_media_descriptor_t *remote_media;
mpf_rtp_termination_descriptor_t *rtp_descriptor;
/* get existing termination */
slot = &((rtp_termination_slot_t*)session->terminations->elts)[i];
if(!slot) continue;
remote_media = mrcp_session_audio_media_get(descriptor,i);
if(slot->descriptor) {
slot->descriptor->audio.remote = remote_media;
}
if(slot->termination) {
/* construct termination descriptor */
rtp_descriptor = apr_palloc(session->base.pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.local = NULL;
rtp_descriptor->audio.remote = remote_media;
/* send modify termination request */
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Modify Termination");
if(mrcp_client_mpf_request_send(session->profile->media_engine,MPF_COMMAND_MODIFY,session->context,slot->termination,rtp_descriptor) == TRUE) {
slot->waiting = TRUE;
session->answer_flag_count++;
}
}
}
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;
}
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;
}
static apt_bool_t mrcp_server_av_media_offer_process(mrcp_server_session_t *session, mrcp_session_descriptor_t *descriptor)
{
mrcp_termination_slot_t *slot;
int i;
int count = session->terminations->nelts;
if(!descriptor->audio_media_arr->nelts) {
/* no media to process */
return TRUE;
}
if(count > descriptor->audio_media_arr->nelts) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Number of Terminations [%d] > Number of Audio Media in Offer [%d]",
count,descriptor->audio_media_arr->nelts);
count = descriptor->audio_media_arr->nelts;
}
/* update existing terminations */
for(i=0; i<count; i++) {
mpf_rtp_termination_descriptor_t *rtp_descriptor;
/* get existing termination */
slot = &((mrcp_termination_slot_t*)session->terminations->elts)[i];
if(!slot || !slot->termination) continue;
/* construct termination descriptor */
rtp_descriptor = apr_palloc(session->base.pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.local = NULL;
rtp_descriptor->audio.remote = mrcp_session_audio_media_get(descriptor,i);
/* send modify termination request */
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Modify RTP Termination [%d]",i);
if(mrcp_server_mpf_request_send(session,MPF_COMMAND_MODIFY,session->context,slot->termination,rtp_descriptor) == TRUE) {
slot->waiting = TRUE;
session->answer_flag_count++;
}
}
/* add new terminations */
for(; i<descriptor->audio_media_arr->nelts; i++) {
mpf_rtp_termination_descriptor_t *rtp_descriptor;
mpf_termination_t *termination;
/* create new RTP termination instance */
termination = mpf_termination_create(session->profile->rtp_termination_factory,session,session->base.pool);
/* add to termination array */
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Add RTP Termination [%d]",i);
slot = apr_array_push(session->terminations);
slot->id = i;
slot->waiting = FALSE;
slot->termination = termination;
/* construct termination descriptor */
rtp_descriptor = apr_palloc(session->base.pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.local = NULL;
rtp_descriptor->audio.remote = mrcp_session_audio_media_get(descriptor,i);
/* send add termination request (add to media context) */
if(mrcp_server_mpf_request_send(session,MPF_COMMAND_ADD,session->context,termination,rtp_descriptor) == TRUE) {
slot->waiting = TRUE;
session->answer_flag_count++;
}
}
return TRUE;
}
