static gboolean
kms_remb_local_update (KmsRembLocal * rl)
{
guint64 bitrate, packets_rcv_interval;
guint fraction_lost, packets_rcv_interval_top;
if (!get_video_recv_info (rl, &bitrate, &fraction_lost,
&packets_rcv_interval)) {
return FALSE;
}
if (!rl->probed) {
if (bitrate == 0) {
return FALSE;
}
rl->remb = bitrate;
rl->probed = TRUE;
}
packets_rcv_interval_top =
MAX (rl->packets_recv_interval_top, packets_rcv_interval);
rl->fraction_lost_record =
(rl->fraction_lost_record * (packets_rcv_interval_top -
packets_rcv_interval) +
fraction_lost * packets_rcv_interval) / packets_rcv_interval_top;
rl->max_br = MAX (rl->max_br, bitrate);
if (rl->avg_br == 0) {
rl->avg_br = bitrate;
} else {
rl->avg_br = (rl->avg_br * 7 + bitrate) / 8;
}
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess,
"packets_rcv_interval: %" G_GUINT64_FORMAT ", fraction_lost_record: %"
G_GUINT64_FORMAT, packets_rcv_interval, rl->fraction_lost_record);
if (rl->fraction_lost_record == 0) {
gint remb_base, remb_new;
remb_base = MIN (rl->remb, rl->max_br);
if (remb_base < rl->threshold) {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "A.1) Exponential (%f)",
rl->exponential_factor);
remb_new = remb_base * (1 + rl->exponential_factor);
} else {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess,
"A.2) Lineal (%" G_GUINT32_FORMAT ")", rl->lineal_factor);
remb_new = remb_base + rl->lineal_factor;
}
rl->remb = MAX (rl->remb, remb_new);
} else {
gint remb_base, lineal_factor_new;
remb_base = MAX (rl->remb, rl->avg_br);
rl->threshold = remb_base * rl->threshold_factor;
lineal_factor_new = (remb_base - rl->threshold) / rl->lineal_factor_grade;
rl->lineal_factor = MAX (rl->lineal_factor_min, lineal_factor_new);
if (rl->fraction_lost_record < rl->up_losses) {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "B) Assumable losses");
rl->remb = MIN (rl->remb, rl->max_br);
} else {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "C) Too losses");
rl->remb = remb_base * rl->decrement_factor;
rl->fraction_lost_record = 0;
rl->max_br = 0;
rl->avg_br = 0;
}
}
if (rl->max_bw > 0) {
rl->remb = MIN (rl->remb, rl->max_bw * 1000);
}
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess,
"REMB: %" G_GUINT32_FORMAT ", TH: %" G_GUINT32_FORMAT
", fraction_lost: %d, fraction_lost_record: %" G_GUINT64_FORMAT
", bitrate: %" G_GUINT64_FORMAT "," " max_br: %" G_GUINT32_FORMAT
", avg_br: %" G_GUINT32_FORMAT, rl->remb, rl->threshold, fraction_lost,
rl->fraction_lost_record, bitrate, rl->max_br, rl->avg_br);
return TRUE;
}
static gboolean
kms_remb_local_update (KmsRembLocal * rl)
{
guint64 bitrate;
guint fraction_lost;
if (!get_video_recv_info (rl, &bitrate, &fraction_lost)) {
return FALSE;
}
if (!rl->probed) {
if (bitrate == 0) {
return FALSE;
}
rl->remb = bitrate;
rl->probed = TRUE;
}
rl->max_br = MAX (rl->max_br, bitrate);
if (rl->avg_br == 0) {
rl->avg_br = bitrate;
} else {
rl->avg_br = (rl->avg_br * 7 + bitrate) / 8;
}
if (fraction_lost == 0) {
gint remb_base, remb_new;
remb_base = MIN (rl->remb, rl->max_br);
if (remb_base < rl->threshold) {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "A.1) Exponential (%f)",
REMB_EXPONENTIAL_FACTOR);
remb_new = remb_base * (1 + REMB_EXPONENTIAL_FACTOR);
} else {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess,
"A.2) Lineal (%" G_GUINT32_FORMAT ")", rl->lineal_factor);
remb_new = remb_base + rl->lineal_factor;
}
rl->remb = MAX (rl->remb, remb_new);
} else if (fraction_lost < REMB_UP_LOSSES) {
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "B) Assumable losses");
rl->remb = MIN (rl->remb, rl->max_br);
rl->threshold = rl->remb * REMB_THRESHOLD_FACTOR;
} else {
gint remb_base, lineal_factor_new;
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess, "C) Too losses");
remb_base = MAX (rl->remb, rl->avg_br);
rl->remb = remb_base * REMB_DECREMENT_FACTOR;
rl->threshold = remb_base * REMB_THRESHOLD_FACTOR;
lineal_factor_new = (remb_base - rl->threshold) / REMB_LINEAL_FACTOR_GRADE;
rl->lineal_factor = MAX (REMB_LINEAL_FACTOR_MIN, lineal_factor_new);
rl->max_br = 0;
rl->avg_br = 0;
}
if (rl->max_bw > 0) {
rl->remb = MIN (rl->remb, rl->max_bw * 1000);
}
GST_TRACE_OBJECT (KMS_REMB_BASE (rl)->rtpsess,
"REMB: %" G_GUINT32_FORMAT ", TH: %" G_GUINT32_FORMAT
", fraction_lost: %d, bitrate: %" G_GUINT64_FORMAT "," " max_br: %"
G_GUINT32_FORMAT ", avg_br: %" G_GUINT32_FORMAT, rl->remb,
rl->threshold, fraction_lost, bitrate, rl->max_br, rl->avg_br);
return TRUE;
}
