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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
| 5 #include <stdint.h> |
| 6 |
5 #include "base/test/simple_test_tick_clock.h" | 7 #include "base/test/simple_test_tick_clock.h" |
6 #include "media/cast/cast_defines.h" | 8 #include "media/cast/cast_defines.h" |
7 #include "media/cast/congestion_control/congestion_control.h" | 9 #include "media/cast/congestion_control/congestion_control.h" |
8 #include "testing/gtest/include/gtest/gtest.h" | 10 #include "testing/gtest/include/gtest/gtest.h" |
9 | 11 |
10 namespace media { | 12 namespace media { |
11 namespace cast { | 13 namespace cast { |
12 | 14 |
13 static const uint32 kMaxBitrateConfigured = 5000000; | 15 static const uint32 kMaxBitrateConfigured = 5000000; |
14 static const uint32 kMinBitrateConfigured = 500000; | 16 static const uint32 kMinBitrateConfigured = 500000; |
15 static const uint32 kStartBitrate = 2000000; | 17 static const uint32 kStartBitrate = 2000000; |
16 static const int64 kStartMillisecond = GG_INT64_C(12345678900000); | 18 static const int64 kStartMillisecond = INT64_C(12345678900000); |
17 static const int64 kRttMs = 20; | 19 static const int64 kRttMs = 20; |
18 static const int64 kAckRateMs = 33; | 20 static const int64 kAckRateMs = 33; |
19 | 21 |
20 class CongestionControlTest : public ::testing::Test { | 22 class CongestionControlTest : public ::testing::Test { |
21 protected: | 23 protected: |
22 CongestionControlTest() | 24 CongestionControlTest() |
23 : congestion_control_(&testing_clock_, | 25 : congestion_control_(&testing_clock_, |
24 kDefaultCongestionControlBackOff, | 26 kDefaultCongestionControlBackOff, |
25 kMaxBitrateConfigured, | 27 kMaxBitrateConfigured, |
26 kMinBitrateConfigured, | 28 kMinBitrateConfigured, |
27 kStartBitrate) { | 29 kStartBitrate) { |
28 testing_clock_.Advance( | 30 testing_clock_.Advance( |
29 base::TimeDelta::FromMilliseconds(kStartMillisecond)); | 31 base::TimeDelta::FromMilliseconds(kStartMillisecond)); |
30 } | 32 } |
31 | 33 |
32 // Returns the last bitrate of the run. | 34 // Returns the last bitrate of the run. |
33 uint32 RunWithOneLossEventPerSecond(int fps, | 35 uint32 RunWithOneLossEventPerSecond(int fps, |
34 int rtt_ms, | 36 int rtt_ms, |
35 int runtime_in_seconds) { | 37 int runtime_in_seconds) { |
36 const base::TimeDelta rtt = base::TimeDelta::FromMilliseconds(rtt_ms); | 38 const base::TimeDelta rtt = base::TimeDelta::FromMilliseconds(rtt_ms); |
37 const base::TimeDelta ack_rate = | 39 const base::TimeDelta ack_rate = |
38 base::TimeDelta::FromMilliseconds(GG_INT64_C(1000) / fps); | 40 base::TimeDelta::FromMilliseconds(INT64_C(1000) / fps); |
39 uint32 new_bitrate = 0; | 41 uint32 new_bitrate = 0; |
40 EXPECT_FALSE(congestion_control_.OnAck(rtt, &new_bitrate)); | 42 EXPECT_FALSE(congestion_control_.OnAck(rtt, &new_bitrate)); |
41 | 43 |
42 for (int seconds = 0; seconds < runtime_in_seconds; ++seconds) { | 44 for (int seconds = 0; seconds < runtime_in_seconds; ++seconds) { |
43 for (int i = 1; i < fps; ++i) { | 45 for (int i = 1; i < fps; ++i) { |
44 testing_clock_.Advance(ack_rate); | 46 testing_clock_.Advance(ack_rate); |
45 congestion_control_.OnAck(rtt, &new_bitrate); | 47 congestion_control_.OnAck(rtt, &new_bitrate); |
46 } | 48 } |
47 EXPECT_TRUE(congestion_control_.OnNack(rtt, &new_bitrate)); | 49 EXPECT_TRUE(congestion_control_.OnNack(rtt, &new_bitrate)); |
48 } | 50 } |
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153 testing_clock_.Advance(base::TimeDelta::FromMilliseconds(1)); | 155 testing_clock_.Advance(base::TimeDelta::FromMilliseconds(1)); |
154 EXPECT_FALSE(congestion_control_.OnAck(rtt, &new_bitrate)); | 156 EXPECT_FALSE(congestion_control_.OnAck(rtt, &new_bitrate)); |
155 } | 157 } |
156 testing_clock_.Advance(base::TimeDelta::FromMilliseconds(1)); | 158 testing_clock_.Advance(base::TimeDelta::FromMilliseconds(1)); |
157 EXPECT_TRUE(congestion_control_.OnAck(rtt, &new_bitrate)); | 159 EXPECT_TRUE(congestion_control_.OnAck(rtt, &new_bitrate)); |
158 expected_bitrate += 1500 * 8 * 20 / kRttMs; | 160 expected_bitrate += 1500 * 8 * 20 / kRttMs; |
159 EXPECT_EQ(expected_bitrate, new_bitrate); | 161 EXPECT_EQ(expected_bitrate, new_bitrate); |
160 } | 162 } |
161 | 163 |
162 TEST_F(CongestionControlTest, Convergence24fps) { | 164 TEST_F(CongestionControlTest, Convergence24fps) { |
163 EXPECT_GE(RunWithOneLossEventPerSecond(24, kRttMs, 100), | 165 EXPECT_GE(RunWithOneLossEventPerSecond(24, kRttMs, 100), UINT32_C(3000000)); |
164 GG_UINT32_C(3000000)); | |
165 } | 166 } |
166 | 167 |
167 TEST_F(CongestionControlTest, Convergence24fpsLongRtt) { | 168 TEST_F(CongestionControlTest, Convergence24fpsLongRtt) { |
168 EXPECT_GE(RunWithOneLossEventPerSecond(24, 100, 100), GG_UINT32_C(500000)); | 169 EXPECT_GE(RunWithOneLossEventPerSecond(24, 100, 100), UINT32_C(500000)); |
169 } | 170 } |
170 | 171 |
171 TEST_F(CongestionControlTest, Convergence60fps) { | 172 TEST_F(CongestionControlTest, Convergence60fps) { |
172 EXPECT_GE(RunWithOneLossEventPerSecond(60, kRttMs, 100), | 173 EXPECT_GE(RunWithOneLossEventPerSecond(60, kRttMs, 100), UINT32_C(3500000)); |
173 GG_UINT32_C(3500000)); | |
174 } | 174 } |
175 | 175 |
176 TEST_F(CongestionControlTest, Convergence60fpsLongRtt) { | 176 TEST_F(CongestionControlTest, Convergence60fpsLongRtt) { |
177 EXPECT_GE(RunWithOneLossEventPerSecond(60, 100, 100), GG_UINT32_C(500000)); | 177 EXPECT_GE(RunWithOneLossEventPerSecond(60, 100, 100), UINT32_C(500000)); |
178 } | 178 } |
179 | 179 |
180 } // namespace cast | 180 } // namespace cast |
181 } // namespace media | 181 } // namespace media |
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