MSQosAnalyzer * ms_simple_qos_analyzer_new(RtpSession *session){
MSSimpleQosAnalyzer *obj=ms_new0(MSSimpleQosAnalyzer,1);
obj->session=session;
obj->parent.desc=&simple_analyzer_desc;
obj->parent.type=Simple;
obj->lre=ortp_loss_rate_estimator_new(LOSS_RATE_MIN_INTERVAL, rtp_session_get_seq_number(session));
return (MSQosAnalyzer*)obj;
}
void ortp_loss_rate_estimator_init(OrtpLossRateEstimator *obj, int min_packet_count_interval, uint64_t min_time_ms_interval, RtpSession *session){
memset(obj,0,sizeof(*obj));
obj->min_packet_count_interval=min_packet_count_interval;
obj->last_ext_seq=rtp_session_get_seq_number(session);
obj->last_cum_loss=rtp_session_get_cum_loss(session);
obj->last_packet_sent_count=session->stats.packet_sent;
obj->last_dup_packet_sent_count=session->stats.packet_dup_sent;
obj->min_time_ms_interval=min_time_ms_interval;
obj->last_estimate_time_ms=(uint64_t)-1;
}
static void stateful_analyzer_update(MSQosAnalyzer *objbase){
MSStatefulQosAnalyzer *obj=(MSStatefulQosAnalyzer*)objbase;
static time_t last_measure;
/* Every seconds, save the bandwidth used. This is needed to know how much
bandwidth was used when receiving a receiver report. Since the report contains
the "last sequence number", it allows us to precisely know which interval to
consider */
if (last_measure != ms_time(0)){
obj->upload_bandwidth_count++;
obj->upload_bandwidth_sum+=rtp_session_get_send_bandwidth(obj->session)/1000.0;
/* Save bandwidth used at this time */
obj->upload_bandwidth[obj->upload_bandwidth_cur].seq_number = rtp_session_get_seq_number(obj->session);
obj->upload_bandwidth[obj->upload_bandwidth_cur].up_bandwidth = rtp_session_get_send_bandwidth(obj->session)/1000.0;
obj->upload_bandwidth_cur = (obj->upload_bandwidth_cur+1)%BW_HISTORY;
}
last_measure = ms_time(0);
if (obj->burst_duration_ms>0){
switch (obj->burst_state){
case MSStatefulQosAnalyzerBurstEnable:{
obj->burst_state=MSStatefulQosAnalyzerBurstInProgress;
ortp_gettimeofday(&obj->start_time, NULL);
rtp_session_set_duplication_ratio(obj->session, obj->burst_ratio);
} case MSStatefulQosAnalyzerBurstInProgress: {
struct timeval now;
float elapsed;
ortp_gettimeofday(&now,NULL);
elapsed=((now.tv_sec-obj->start_time.tv_sec)*1000.0) + ((now.tv_usec-obj->start_time.tv_usec)/1000.0);
if (elapsed > obj->burst_duration_ms){
obj->burst_state=MSStatefulQosAnalyzerBurstDisable;
rtp_session_set_duplication_ratio(obj->session, 0);
}
} case MSStatefulQosAnalyzerBurstDisable: {
}
}
}
}
