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add some comments to PacketTimeWindow

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Stephen Birarda 2015-08-17 16:13:14 -07:00
parent 71b2d90c64
commit 1c176e55ed
1 changed files with 4 additions and 0 deletions
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4
libraries/networking/src/udt/PacketTimeWindow.cpp
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@ -51,6 +51,7 @@ int32_t meanOfMedianFilteredValues(std::vector<int> intervals, int numValues, in
// grab the median value of the intervals vector // grab the median value of the intervals vector
int intervalsMedian = median(intervals.begin(), intervals.end()); int intervalsMedian = median(intervals.begin(), intervals.end());
// figure out our bounds for median filtering
static const int MEDIAN_FILTERING_BOUND_MULTIPLIER = 8; static const int MEDIAN_FILTERING_BOUND_MULTIPLIER = 8;
int upperBound = intervalsMedian * MEDIAN_FILTERING_BOUND_MULTIPLIER; int upperBound = intervalsMedian * MEDIAN_FILTERING_BOUND_MULTIPLIER;
int lowerBound = intervalsMedian / MEDIAN_FILTERING_BOUND_MULTIPLIER; int lowerBound = intervalsMedian / MEDIAN_FILTERING_BOUND_MULTIPLIER;
@ -58,6 +59,7 @@ int32_t meanOfMedianFilteredValues(std::vector<int> intervals, int numValues, in
int sum = 0; int sum = 0;
int count = 0; int count = 0;
// sum the values that are inside the median filtered bounds
for (auto& interval : intervals) { for (auto& interval : intervals) {
if ((interval < upperBound) && (interval > lowerBound)) { if ((interval < upperBound) && (interval > lowerBound)) {
++count; ++count;
@ -65,7 +67,9 @@ int32_t meanOfMedianFilteredValues(std::vector<int> intervals, int numValues, in
} }
} }
// make sure we hit our threshold of values required
if (count >= valuesRequired) { if (count >= valuesRequired) {
// return the frequency (per second) for the mean interval
static const double USECS_PER_SEC = 1000000.0; static const double USECS_PER_SEC = 1000000.0;
return (int32_t) ceil(USECS_PER_SEC / (((double) sum) / ((double) count))); return (int32_t) ceil(USECS_PER_SEC / (((double) sum) / ((double) count)));
} else { } else {