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b34556e598
The receive time calculator combines the packet time stamps received from the socket interface with the system clock used in WebRTC. This means that the packet timestamps are set in the WebRTC clock timebase and that large jumps in the time stamps from the socket will not affect the reported receive time stamps. Bug: None Change-Id: I293925c41919829524a115bb9377027bf0a797fb Reviewed-on: https://webrtc-review.googlesource.com/61862 Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Christoffer Rodbro <crodbro@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22540}
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018 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 "call/receive_time_calculator.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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namespace {
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int64_t ReconcileMs(ReceiveTimeCalculator* calc,
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int64_t packet_time_ms,
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int64_t safe_time_ms) {
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return calc->ReconcileReceiveTimes(packet_time_ms * 1000,
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safe_time_ms * 1000) /
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1000;
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}
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} // namespace
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TEST(ReceiveTimeCalculatorTest, UsesSmallerIncrements) {
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int64_t kMinDeltaMs = -20;
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int64_t kMaxDeltaDiffMs = 100;
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ReceiveTimeCalculator calc(kMinDeltaMs, kMaxDeltaDiffMs);
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// Initialize offset.
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ReconcileMs(&calc, 10000, 20000);
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EXPECT_EQ(ReconcileMs(&calc, 10010, 20100), 20010);
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EXPECT_EQ(ReconcileMs(&calc, 10020, 20100), 20020);
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EXPECT_EQ(ReconcileMs(&calc, 10030, 20100), 20030);
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EXPECT_EQ(ReconcileMs(&calc, 10110, 20200), 20110);
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EXPECT_EQ(ReconcileMs(&calc, 10120, 20200), 20120);
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EXPECT_EQ(ReconcileMs(&calc, 10130, 20200), 20130);
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// Small jumps backwards are let trough, they might be due to reordering.
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EXPECT_EQ(ReconcileMs(&calc, 10120, 20200), 20120);
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// The safe clock might be smaller than the packet clock.
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EXPECT_EQ(ReconcileMs(&calc, 10210, 20200), 20210);
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EXPECT_EQ(ReconcileMs(&calc, 10240, 20200), 20240);
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}
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TEST(ReceiveTimeCalculatorTest, CorrectsJumps) {
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int64_t kMinDeltaMs = -20;
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int64_t kMaxDeltaDiffMs = 100;
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ReceiveTimeCalculator calc(kMinDeltaMs, kMaxDeltaDiffMs);
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// Initialize offset.
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ReconcileMs(&calc, 10000, 20000);
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EXPECT_EQ(ReconcileMs(&calc, 10010, 20100), 20010);
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EXPECT_EQ(ReconcileMs(&calc, 10020, 20100), 20020);
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EXPECT_EQ(ReconcileMs(&calc, 10030, 20100), 20030);
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// Jump forward in time.
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EXPECT_EQ(ReconcileMs(&calc, 10240, 20200), 20200);
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EXPECT_EQ(ReconcileMs(&calc, 10250, 20200), 20210);
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EXPECT_EQ(ReconcileMs(&calc, 10260, 20200), 20220);
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// Jump backward in time.
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EXPECT_EQ(ReconcileMs(&calc, 10230, 20300), 20300);
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EXPECT_EQ(ReconcileMs(&calc, 10240, 20300), 20310);
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EXPECT_EQ(ReconcileMs(&calc, 10250, 20300), 20320);
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}
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} // namespace test
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} // namespace webrtc
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