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cde5354729
This CL implements {,Logging}DelayVariationCalculator, whose purpose is to calculate simple inter-arrival metrics for a sequence of RTP frames. Uses could include RtcEventLog analysis and ad hoc testing.
Want lgtm: asapersson
Bug: webrtc:15213
Change-Id: I3f9d13a2c4fa66b6f1229c1b6fcd66a6911070de
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/306741
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Jeremy Leconte <jleconte@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40247}
56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
/*
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* Copyright 2023 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "test/jitter/logging_delay_variation_calculator.h"
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#include <algorithm>
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#include <map>
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#include <string>
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#include <vector>
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#include "api/test/metrics/metrics_logger.h"
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#include "api/units/timestamp.h"
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#include "system_wrappers/include/clock.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace test {
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TEST(LoggingDelayVariationCalculator, TimeSeriesWithTwoFrames) {
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SimulatedClock clock(123456);
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DefaultMetricsLogger logger(&clock);
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{
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LoggingDelayVariationCalculator calc("TimeSeriesWithTwoFrames", &logger);
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calc.Insert(3000, Timestamp::Millis(33), DataSize::Bytes(100));
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calc.Insert(6000, Timestamp::Millis(66), DataSize::Bytes(100));
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// Metrics are logged when `calc` goes out of scope.
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}
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std::vector<Metric> metrics = logger.GetCollectedMetrics();
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std::map<std::string, double> last_sample_by_metric_name;
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std::transform(metrics.begin(), metrics.end(),
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std::inserter(last_sample_by_metric_name,
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last_sample_by_metric_name.end()),
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[](const Metric& metric) {
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EXPECT_FALSE(metric.time_series.samples.empty());
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return std::make_pair(
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metric.name, metric.time_series.samples.back().value);
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});
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EXPECT_EQ(last_sample_by_metric_name["rtp_timestamp"], 6000.0);
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EXPECT_EQ(last_sample_by_metric_name["arrival_time"], 66.0);
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EXPECT_EQ(last_sample_by_metric_name["size_bytes"], 100.0);
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EXPECT_EQ(last_sample_by_metric_name["inter_departure_time"], 33.333);
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EXPECT_EQ(last_sample_by_metric_name["inter_arrival_time"], 33.0);
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EXPECT_EQ(last_sample_by_metric_name["inter_delay_variation"], -0.333);
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EXPECT_EQ(last_sample_by_metric_name["inter_size_variation"], 0.0);
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}
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} // namespace test
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} // namespace webrtc
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