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1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include <math.h> | 11 #include <math.h> |
12 | 12 |
13 #include "testing/gtest/include/gtest/gtest.h" | 13 #include "testing/gtest/include/gtest/gtest.h" |
14 #include "webrtc/voice_engine/network_predictor.h" | 14 #include "webrtc/voice_engine/network_predictor.h" |
15 #include "webrtc/system_wrappers/interface/clock.h" | 15 #include "webrtc/system_wrappers/include/clock.h" |
16 | 16 |
17 namespace webrtc { | 17 namespace webrtc { |
18 namespace voe { | 18 namespace voe { |
19 | 19 |
20 class TestNetworkPredictor : public ::testing::Test { | 20 class TestNetworkPredictor : public ::testing::Test { |
21 protected: | 21 protected: |
22 TestNetworkPredictor() | 22 TestNetworkPredictor() |
23 : clock_(0), | 23 : clock_(0), |
24 network_predictor_(new NetworkPredictor(&clock_)) {} | 24 network_predictor_(new NetworkPredictor(&clock_)) {} |
25 SimulatedClock clock_; | 25 SimulatedClock clock_; |
26 rtc::scoped_ptr<NetworkPredictor> network_predictor_; | 26 rtc::scoped_ptr<NetworkPredictor> network_predictor_; |
27 }; | 27 }; |
28 | 28 |
29 TEST_F(TestNetworkPredictor, TestPacketLossRateFilter) { | 29 TEST_F(TestNetworkPredictor, TestPacketLossRateFilter) { |
30 // Test initial packet loss rate estimate is 0. | 30 // Test initial packet loss rate estimate is 0. |
31 EXPECT_EQ(0, network_predictor_->GetLossRate()); | 31 EXPECT_EQ(0, network_predictor_->GetLossRate()); |
32 network_predictor_->UpdatePacketLossRate(32); | 32 network_predictor_->UpdatePacketLossRate(32); |
33 // First time, no filtering. | 33 // First time, no filtering. |
34 EXPECT_EQ(32, network_predictor_->GetLossRate()); | 34 EXPECT_EQ(32, network_predictor_->GetLossRate()); |
35 clock_.AdvanceTimeMilliseconds(1000); | 35 clock_.AdvanceTimeMilliseconds(1000); |
36 network_predictor_->UpdatePacketLossRate(40); | 36 network_predictor_->UpdatePacketLossRate(40); |
37 float exp = pow(0.9999f, 1000); | 37 float exp = pow(0.9999f, 1000); |
38 float value = 32.0f * exp + (1 - exp) * 40.0f; | 38 float value = 32.0f * exp + (1 - exp) * 40.0f; |
39 EXPECT_EQ(static_cast<uint8_t>(value + 0.5f), | 39 EXPECT_EQ(static_cast<uint8_t>(value + 0.5f), |
40 network_predictor_->GetLossRate()); | 40 network_predictor_->GetLossRate()); |
41 } | 41 } |
42 } // namespace voe | 42 } // namespace voe |
43 } // namespace webrtc | 43 } // namespace webrtc |
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