MPF_DECLARE(apt_bool_t) mpf_rtp_stream_remove(mpf_audio_stream_t *stream)
{
mpf_rtp_stream_t *rtp_stream = stream->obj;
if(rtp_stream->state == MPF_MEDIA_ENABLED) {
/* disable RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_DISABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Remove RTP Session %s:%hu",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
apt_timer_kill(rtp_stream->rtcp_tx_timer);
}
if(rtp_stream->rtcp_rx_timer) {
apt_timer_kill(rtp_stream->rtcp_rx_timer);
}
if(rtp_stream->settings->rtcp == TRUE && rtp_stream->settings->rtcp_bye_policy != RTCP_BYE_DISABLE) {
apt_str_t reason = {RTCP_BYE_SESSION_ENDED, sizeof(RTCP_BYE_SESSION_ENDED)-1};
mpf_rtcp_bye_send(rtp_stream,&reason);
}
}
mpf_rtp_socket_pair_close(rtp_stream);
return TRUE;
}
static apt_bool_t mpf_rtp_stream_transmit(mpf_audio_stream_t *stream, const mpf_frame_t *frame)
{
apt_bool_t status = TRUE;
mpf_rtp_stream_t *rtp_stream = stream->obj;
rtp_transmitter_t *transmitter = &rtp_stream->transmitter;
transmitter->timestamp += transmitter->samples_per_frame;
if(frame->type == MEDIA_FRAME_TYPE_NONE) {
if(!transmitter->inactivity) {
if(transmitter->current_frames == 0) {
/* set inactivity (ptime alligned) */
transmitter->inactivity = 1;
if(rtp_stream->settings->rtcp == TRUE && rtp_stream->settings->rtcp_bye_policy == RTCP_BYE_PER_TALKSPURT) {
apt_str_t reason = {RTCP_BYE_TALKSPURT_ENDED, sizeof(RTCP_BYE_TALKSPURT_ENDED)-1};
mpf_rtcp_bye_send(rtp_stream,&reason);
}
}
else {
/* ptime allignment */
status = mpf_rtp_data_send(rtp_stream,transmitter,frame);
}
}
return status;
}
if((frame->type & MEDIA_FRAME_TYPE_EVENT) == MEDIA_FRAME_TYPE_EVENT){
/* transmit event as soon as received */
if(stream->tx_event_descriptor) {
if(frame->marker == MPF_MARKER_START_OF_EVENT) {
/* store start time (base) of the event */
transmitter->timestamp_base = transmitter->timestamp;
}
else if(frame->marker == MPF_MARKER_NEW_SEGMENT) {
/* update base in case of long-lasting events */
transmitter->timestamp_base = transmitter->timestamp;
}
status = mpf_rtp_event_send(rtp_stream,transmitter,frame);
}
}
if((frame->type & MEDIA_FRAME_TYPE_AUDIO) == MEDIA_FRAME_TYPE_AUDIO){
if(transmitter->current_frames == 0) {
rtp_header_t *header = (rtp_header_t*)transmitter->packet_data;
rtp_header_prepare(
transmitter,
header,
stream->tx_descriptor->payload_type,
transmitter->inactivity,
transmitter->timestamp);
transmitter->packet_size = sizeof(rtp_header_t);
if(transmitter->inactivity) {
transmitter->inactivity = 0;
}
}
status = mpf_rtp_data_send(rtp_stream,transmitter,frame);
}
return status;
}
static apt_bool_t mpf_rtp_stream_media_negotiate(mpf_rtp_stream_t *rtp_stream)
{
mpf_rtp_media_descriptor_t *local_media = rtp_stream->local_media;
mpf_rtp_media_descriptor_t *remote_media = rtp_stream->remote_media;
if(!local_media || !remote_media) {
return FALSE;
}
local_media->id = remote_media->id;
local_media->mid = remote_media->mid;
local_media->ptime = remote_media->ptime;
if(rtp_stream->state == MPF_MEDIA_DISABLED && remote_media->state == MPF_MEDIA_ENABLED) {
/* enable RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_ENABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Enable RTP Session %s:%hu",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
apt_timer_set(rtp_stream->rtcp_tx_timer,rtp_stream->settings->rtcp_tx_interval);
}
if(rtp_stream->rtcp_rx_timer) {
apt_timer_set(rtp_stream->rtcp_rx_timer,rtp_stream->settings->rtcp_rx_resolution);
}
}
else if(rtp_stream->state == MPF_MEDIA_ENABLED && remote_media->state == MPF_MEDIA_DISABLED) {
/* disable RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_DISABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Disable RTP Session %s:%hu",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
apt_timer_kill(rtp_stream->rtcp_tx_timer);
}
if(rtp_stream->rtcp_rx_timer) {
apt_timer_kill(rtp_stream->rtcp_rx_timer);
}
if(rtp_stream->settings->rtcp == TRUE && rtp_stream->settings->rtcp_bye_policy != RTCP_BYE_DISABLE) {
apt_str_t reason = {RTCP_BYE_SESSION_ENDED, sizeof(RTCP_BYE_SESSION_ENDED)-1};
mpf_rtcp_bye_send(rtp_stream,&reason);
}
}
local_media->state = remote_media->state;
local_media->direction = mpf_stream_reverse_direction_get(remote_media->direction);
if(remote_media->state == MPF_MEDIA_ENABLED) {
mpf_codec_list_t *codec_list1 = NULL;
mpf_codec_list_t *codec_list2 = NULL;
/* intersect local and remote codecs */
if(rtp_stream->settings->own_preferrence == TRUE) {
codec_list1 = &local_media->codec_list;
codec_list2 = &remote_media->codec_list;
}
else {
codec_list2 = &local_media->codec_list;
codec_list1 = &remote_media->codec_list;
}
if(mpf_codec_lists_intersect(codec_list1,codec_list2) == FALSE) {
/* reject RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_DISABLED;
local_media->direction = STREAM_DIRECTION_NONE;
local_media->state = MPF_MEDIA_DISABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Reject RTP Session %s:%hu no codecs matched",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
apt_timer_kill(rtp_stream->rtcp_tx_timer);
}
if(rtp_stream->rtcp_rx_timer) {
apt_timer_kill(rtp_stream->rtcp_rx_timer);
}
}
}
rtp_stream->base->direction = local_media->direction;
return TRUE;
}
static apt_bool_t mpf_rtp_stream_media_negotiate(mpf_rtp_stream_t *rtp_stream)
{
mpf_rtp_media_descriptor_t *local_media = rtp_stream->local_media;
mpf_rtp_media_descriptor_t *remote_media = rtp_stream->remote_media;
if(!local_media || !remote_media) {
return FALSE;
}
local_media->id = remote_media->id;
local_media->mid = remote_media->mid;
local_media->ptime = remote_media->ptime;
if(rtp_stream->state == MPF_MEDIA_DISABLED && remote_media->state == MPF_MEDIA_ENABLED) {
/* enable RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_ENABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Enable RTP Session %s:%hu",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
mpf_timer_set(rtp_stream->rtcp_tx_timer,rtp_stream->config->rtcp_tx_interval);
}
if(rtp_stream->rtcp_rx_timer) {
mpf_timer_set(rtp_stream->rtcp_rx_timer,rtp_stream->config->rtcp_rx_resolution);
}
}
else if(rtp_stream->state == MPF_MEDIA_ENABLED && remote_media->state == MPF_MEDIA_DISABLED) {
/* disable RTP/RTCP session */
rtp_stream->state = MPF_MEDIA_DISABLED;
if(rtp_stream->rtp_l_sockaddr) {
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Disable RTP Session %s:%hu",
rtp_stream->rtp_l_sockaddr->hostname,
rtp_stream->rtp_l_sockaddr->port);
}
if(rtp_stream->rtcp_tx_timer) {
mpf_timer_kill(rtp_stream->rtcp_tx_timer);
}
if(rtp_stream->rtcp_rx_timer) {
mpf_timer_kill(rtp_stream->rtcp_rx_timer);
}
if(rtp_stream->config->rtcp == TRUE && rtp_stream->config->rtcp_bye_policy != RTCP_BYE_DISABLE) {
apt_str_t reason = {RTCP_BYE_SESSION_ENDED, sizeof(RTCP_BYE_SESSION_ENDED)-1};
mpf_rtcp_bye_send(rtp_stream,&reason);
}
}
local_media->state = remote_media->state;
local_media->direction = mpf_stream_reverse_direction_get(remote_media->direction);
rtp_stream->base->direction = local_media->direction;
if(remote_media->state == MPF_MEDIA_ENABLED) {
if(mpf_codec_list_is_empty(&remote_media->codec_list) == TRUE) {
/* no remote codecs available, initialize them according to the local codecs */
mpf_codec_list_copy(&remote_media->codec_list,
&local_media->codec_list,
rtp_stream->pool);
}
/* intersect local and remote codecs */
if(rtp_stream->config->own_preferrence == TRUE) {
mpf_codec_lists_intersect(
&local_media->codec_list,
&remote_media->codec_list);
}
else {
mpf_codec_lists_intersect(
&remote_media->codec_list,
&local_media->codec_list);
}
}
return TRUE;
}