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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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 "webrtc/test/gtest.h" | 11 #include "webrtc/test/gtest.h" |
12 #include "webrtc/base/constructormagic.h" | 12 #include "webrtc/base/constructormagic.h" |
13 #include "webrtc/modules/pacing/paced_sender.h" | 13 #include "webrtc/modules/pacing/paced_sender.h" |
14 #include "webrtc/modules/congestion_controller/delay_based_bwe.h" | 14 #include "webrtc/modules/congestion_controller/delay_based_bwe.h" |
15 #include "webrtc/modules/congestion_controller/delay_based_bwe_unittest_helper.h
" | 15 #include "webrtc/modules/congestion_controller/delay_based_bwe_unittest_helper.h
" |
16 #include "webrtc/system_wrappers/include/clock.h" | 16 #include "webrtc/system_wrappers/include/clock.h" |
17 #include "webrtc/test/field_trial.h" | 17 #include "webrtc/test/field_trial.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 namespace { | 21 namespace { |
22 | 22 const PacedPacketInfo kPacingInfo0(0, 5, 2000); |
| 23 const PacedPacketInfo kPacingInfo1(1, 8, 4000); |
23 constexpr int kNumProbes = 5; | 24 constexpr int kNumProbes = 5; |
24 } // namespace | 25 } // namespace |
25 | 26 |
26 TEST_F(DelayBasedBweTest, ProbeDetection) { | 27 TEST_F(DelayBasedBweTest, ProbeDetection) { |
27 int64_t now_ms = clock_.TimeInMilliseconds(); | 28 int64_t now_ms = clock_.TimeInMilliseconds(); |
28 uint16_t seq_num = 0; | 29 uint16_t seq_num = 0; |
29 | 30 |
30 // First burst sent at 8 * 1000 / 10 = 800 kbps. | 31 // First burst sent at 8 * 1000 / 10 = 800 kbps. |
31 for (int i = 0; i < kNumProbes; ++i) { | 32 for (int i = 0; i < kNumProbes; ++i) { |
32 clock_.AdvanceTimeMilliseconds(10); | 33 clock_.AdvanceTimeMilliseconds(10); |
33 now_ms = clock_.TimeInMilliseconds(); | 34 now_ms = clock_.TimeInMilliseconds(); |
34 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, 0); | 35 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, kPacingInfo0); |
35 } | 36 } |
36 EXPECT_TRUE(bitrate_observer_.updated()); | 37 EXPECT_TRUE(bitrate_observer_.updated()); |
37 | 38 |
38 // Second burst sent at 8 * 1000 / 5 = 1600 kbps. | 39 // Second burst sent at 8 * 1000 / 5 = 1600 kbps. |
39 for (int i = 0; i < kNumProbes; ++i) { | 40 for (int i = 0; i < kNumProbes; ++i) { |
40 clock_.AdvanceTimeMilliseconds(5); | 41 clock_.AdvanceTimeMilliseconds(5); |
41 now_ms = clock_.TimeInMilliseconds(); | 42 now_ms = clock_.TimeInMilliseconds(); |
42 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, 1); | 43 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, kPacingInfo1); |
43 } | 44 } |
44 | 45 |
45 EXPECT_TRUE(bitrate_observer_.updated()); | 46 EXPECT_TRUE(bitrate_observer_.updated()); |
46 EXPECT_GT(bitrate_observer_.latest_bitrate(), 1500000u); | 47 EXPECT_GT(bitrate_observer_.latest_bitrate(), 1500000u); |
47 } | 48 } |
48 | 49 |
49 TEST_F(DelayBasedBweTest, ProbeDetectionNonPacedPackets) { | 50 TEST_F(DelayBasedBweTest, ProbeDetectionNonPacedPackets) { |
50 int64_t now_ms = clock_.TimeInMilliseconds(); | 51 int64_t now_ms = clock_.TimeInMilliseconds(); |
51 uint16_t seq_num = 0; | 52 uint16_t seq_num = 0; |
52 // First burst sent at 8 * 1000 / 10 = 800 kbps, but with every other packet | 53 // First burst sent at 8 * 1000 / 10 = 800 kbps, but with every other packet |
53 // not being paced which could mess things up. | 54 // not being paced which could mess things up. |
54 for (int i = 0; i < kNumProbes; ++i) { | 55 for (int i = 0; i < kNumProbes; ++i) { |
55 clock_.AdvanceTimeMilliseconds(5); | 56 clock_.AdvanceTimeMilliseconds(5); |
56 now_ms = clock_.TimeInMilliseconds(); | 57 now_ms = clock_.TimeInMilliseconds(); |
57 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, 0); | 58 IncomingFeedback(now_ms, now_ms, seq_num++, 1000, kPacingInfo0); |
58 // Non-paced packet, arriving 5 ms after. | 59 // Non-paced packet, arriving 5 ms after. |
59 clock_.AdvanceTimeMilliseconds(5); | 60 clock_.AdvanceTimeMilliseconds(5); |
60 IncomingFeedback(now_ms, now_ms, seq_num++, 100, | 61 IncomingFeedback(now_ms, now_ms, seq_num++, 100, PacedPacketInfo()); |
61 PacedPacketInfo::kNotAProbe); | |
62 } | 62 } |
63 | 63 |
64 EXPECT_TRUE(bitrate_observer_.updated()); | 64 EXPECT_TRUE(bitrate_observer_.updated()); |
65 EXPECT_GT(bitrate_observer_.latest_bitrate(), 800000u); | 65 EXPECT_GT(bitrate_observer_.latest_bitrate(), 800000u); |
66 } | 66 } |
67 | 67 |
68 TEST_F(DelayBasedBweTest, ProbeDetectionFasterArrival) { | 68 TEST_F(DelayBasedBweTest, ProbeDetectionFasterArrival) { |
69 int64_t now_ms = clock_.TimeInMilliseconds(); | 69 int64_t now_ms = clock_.TimeInMilliseconds(); |
70 uint16_t seq_num = 0; | 70 uint16_t seq_num = 0; |
71 // First burst sent at 8 * 1000 / 10 = 800 kbps. | 71 // First burst sent at 8 * 1000 / 10 = 800 kbps. |
72 // Arriving at 8 * 1000 / 5 = 1600 kbps. | 72 // Arriving at 8 * 1000 / 5 = 1600 kbps. |
73 int64_t send_time_ms = 0; | 73 int64_t send_time_ms = 0; |
74 for (int i = 0; i < kNumProbes; ++i) { | 74 for (int i = 0; i < kNumProbes; ++i) { |
75 clock_.AdvanceTimeMilliseconds(1); | 75 clock_.AdvanceTimeMilliseconds(1); |
76 send_time_ms += 10; | 76 send_time_ms += 10; |
77 now_ms = clock_.TimeInMilliseconds(); | 77 now_ms = clock_.TimeInMilliseconds(); |
78 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, 0); | 78 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, kPacingInfo0); |
79 } | 79 } |
80 | 80 |
81 EXPECT_FALSE(bitrate_observer_.updated()); | 81 EXPECT_FALSE(bitrate_observer_.updated()); |
82 } | 82 } |
83 | 83 |
84 TEST_F(DelayBasedBweTest, ProbeDetectionSlowerArrival) { | 84 TEST_F(DelayBasedBweTest, ProbeDetectionSlowerArrival) { |
85 int64_t now_ms = clock_.TimeInMilliseconds(); | 85 int64_t now_ms = clock_.TimeInMilliseconds(); |
86 uint16_t seq_num = 0; | 86 uint16_t seq_num = 0; |
87 // First burst sent at 8 * 1000 / 5 = 1600 kbps. | 87 // First burst sent at 8 * 1000 / 5 = 1600 kbps. |
88 // Arriving at 8 * 1000 / 7 = 1142 kbps. | 88 // Arriving at 8 * 1000 / 7 = 1142 kbps. |
89 int64_t send_time_ms = 0; | 89 int64_t send_time_ms = 0; |
90 for (int i = 0; i < kNumProbes; ++i) { | 90 for (int i = 0; i < kNumProbes; ++i) { |
91 clock_.AdvanceTimeMilliseconds(7); | 91 clock_.AdvanceTimeMilliseconds(7); |
92 send_time_ms += 5; | 92 send_time_ms += 5; |
93 now_ms = clock_.TimeInMilliseconds(); | 93 now_ms = clock_.TimeInMilliseconds(); |
94 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, 1); | 94 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, kPacingInfo1); |
95 } | 95 } |
96 | 96 |
97 EXPECT_TRUE(bitrate_observer_.updated()); | 97 EXPECT_TRUE(bitrate_observer_.updated()); |
98 EXPECT_NEAR(bitrate_observer_.latest_bitrate(), 1140000u, 10000u); | 98 EXPECT_NEAR(bitrate_observer_.latest_bitrate(), 1140000u, 10000u); |
99 } | 99 } |
100 | 100 |
101 TEST_F(DelayBasedBweTest, ProbeDetectionSlowerArrivalHighBitrate) { | 101 TEST_F(DelayBasedBweTest, ProbeDetectionSlowerArrivalHighBitrate) { |
102 int64_t now_ms = clock_.TimeInMilliseconds(); | 102 int64_t now_ms = clock_.TimeInMilliseconds(); |
103 uint16_t seq_num = 0; | 103 uint16_t seq_num = 0; |
104 // Burst sent at 8 * 1000 / 1 = 8000 kbps. | 104 // Burst sent at 8 * 1000 / 1 = 8000 kbps. |
105 // Arriving at 8 * 1000 / 2 = 4000 kbps. | 105 // Arriving at 8 * 1000 / 2 = 4000 kbps. |
106 int64_t send_time_ms = 0; | 106 int64_t send_time_ms = 0; |
107 for (int i = 0; i < kNumProbes; ++i) { | 107 for (int i = 0; i < kNumProbes; ++i) { |
108 clock_.AdvanceTimeMilliseconds(2); | 108 clock_.AdvanceTimeMilliseconds(2); |
109 send_time_ms += 1; | 109 send_time_ms += 1; |
110 now_ms = clock_.TimeInMilliseconds(); | 110 now_ms = clock_.TimeInMilliseconds(); |
111 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, 1); | 111 IncomingFeedback(now_ms, send_time_ms, seq_num++, 1000, kPacingInfo1); |
112 } | 112 } |
113 | 113 |
114 EXPECT_TRUE(bitrate_observer_.updated()); | 114 EXPECT_TRUE(bitrate_observer_.updated()); |
115 EXPECT_NEAR(bitrate_observer_.latest_bitrate(), 4000000u, 10000u); | 115 EXPECT_NEAR(bitrate_observer_.latest_bitrate(), 4000000u, 10000u); |
116 } | 116 } |
117 | 117 |
118 TEST_F(DelayBasedBweTest, GetProbingInterval) { | 118 TEST_F(DelayBasedBweTest, GetProbingInterval) { |
119 int64_t default_interval_ms = bitrate_estimator_->GetProbingIntervalMs(); | 119 int64_t default_interval_ms = bitrate_estimator_->GetProbingIntervalMs(); |
120 EXPECT_GT(default_interval_ms, 0); | 120 EXPECT_GT(default_interval_ms, 0); |
121 CapacityDropTestHelper(1, true, 567, 0); | 121 CapacityDropTestHelper(1, true, 567, 0); |
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258 | 258 |
259 TEST_F(DelayBasedBweMedianSlopeExperimentTest, CapacityDropNegOffsetChange) { | 259 TEST_F(DelayBasedBweMedianSlopeExperimentTest, CapacityDropNegOffsetChange) { |
260 CapacityDropTestHelper(1, false, 1267, -30000); | 260 CapacityDropTestHelper(1, false, 1267, -30000); |
261 } | 261 } |
262 | 262 |
263 TEST_F(DelayBasedBweMedianSlopeExperimentTest, CapacityDropOneStreamWrap) { | 263 TEST_F(DelayBasedBweMedianSlopeExperimentTest, CapacityDropOneStreamWrap) { |
264 CapacityDropTestHelper(1, true, 600, 0); | 264 CapacityDropTestHelper(1, true, 600, 0); |
265 } | 265 } |
266 | 266 |
267 } // namespace webrtc | 267 } // namespace webrtc |
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