b19f0d106f
Changes to a much more efficient and more reusable protobuf format for metrics. Test: Widevine tests, Google Play and MediaDrm CTS test. Bug: 73724218 Change-Id: I3299051d7a16bcd7758c8f272415ca40e10c1313
32 lines
736 B
C++
32 lines
736 B
C++
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// This file contains the definitions for the Distribution class members.
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#include "distribution.h"
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#include <float.h>
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namespace wvcdm {
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namespace metrics {
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Distribution::Distribution()
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: count_(0ULL),
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min_(FLT_MAX),
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max_(-FLT_MAX),
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mean_(0.0),
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sum_squared_deviation_(0.0) {}
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void Distribution::Record(float value) {
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// Using method of provisional means.
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float deviation = value - mean_;
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mean_ = mean_ + (deviation / ++count_);
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sum_squared_deviation_ =
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sum_squared_deviation_ + (deviation * (value - mean_));
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min_ = min_ < value ? min_ : value;
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max_ = max_ > value ? max_ : value;
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}
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} // namespace metrics
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} // namespace wvcdm
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