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| 1 /* | 1 /* |
| 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 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 <algorithm> | 11 #include <algorithm> |
| 12 #include <vector> | 12 #include <vector> |
| 13 | 13 |
| 14 #include "testing/gtest/include/gtest/gtest.h" | 14 #include "testing/gtest/include/gtest/gtest.h" |
| 15 | 15 |
| 16 #include "webrtc/call/mock/mock_rtc_event_log.h" |
| 16 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h" | 17 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h" |
| 17 #include "webrtc/modules/pacing/mock/mock_paced_sender.h" | 18 #include "webrtc/modules/pacing/mock/mock_paced_sender.h" |
| 18 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | 19 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" |
| 19 | 20 |
| 20 using ::testing::Exactly; | 21 using ::testing::Exactly; |
| 21 using ::testing::Return; | 22 using ::testing::Return; |
| 22 | 23 |
| 23 using webrtc::BitrateController; | 24 using webrtc::BitrateController; |
| 24 using webrtc::BitrateObserver; | 25 using webrtc::BitrateObserver; |
| 25 using webrtc::PacedSender; | 26 using webrtc::PacedSender; |
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| 59 uint8_t last_fraction_loss_; | 60 uint8_t last_fraction_loss_; |
| 60 int64_t last_rtt_; | 61 int64_t last_rtt_; |
| 61 }; | 62 }; |
| 62 | 63 |
| 63 class BitrateControllerTest : public ::testing::Test { | 64 class BitrateControllerTest : public ::testing::Test { |
| 64 protected: | 65 protected: |
| 65 BitrateControllerTest() : clock_(0) {} | 66 BitrateControllerTest() : clock_(0) {} |
| 66 ~BitrateControllerTest() {} | 67 ~BitrateControllerTest() {} |
| 67 | 68 |
| 68 virtual void SetUp() { | 69 virtual void SetUp() { |
| 69 controller_ = | 70 controller_ = BitrateController::CreateBitrateController( |
| 70 BitrateController::CreateBitrateController(&clock_, &bitrate_observer_); | 71 &clock_, &bitrate_observer_, &event_log_); |
| 71 controller_->SetStartBitrate(kStartBitrateBps); | 72 controller_->SetStartBitrate(kStartBitrateBps); |
| 72 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); | 73 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); |
| 73 controller_->SetMinMaxBitrate(kMinBitrateBps, kMaxBitrateBps); | 74 controller_->SetMinMaxBitrate(kMinBitrateBps, kMaxBitrateBps); |
| 74 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); | 75 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); |
| 75 bandwidth_observer_ = controller_->CreateRtcpBandwidthObserver(); | 76 bandwidth_observer_ = controller_->CreateRtcpBandwidthObserver(); |
| 76 } | 77 } |
| 77 | 78 |
| 78 virtual void TearDown() { | 79 virtual void TearDown() { |
| 79 delete bandwidth_observer_; | 80 delete bandwidth_observer_; |
| 80 delete controller_; | 81 delete controller_; |
| 81 } | 82 } |
| 82 | 83 |
| 83 const int kMinBitrateBps = 100000; | 84 const int kMinBitrateBps = 100000; |
| 84 const int kStartBitrateBps = 200000; | 85 const int kStartBitrateBps = 200000; |
| 85 const int kMaxBitrateBps = 300000; | 86 const int kMaxBitrateBps = 300000; |
| 86 | 87 |
| 87 const int kDefaultMinBitrateBps = 10000; | 88 const int kDefaultMinBitrateBps = 10000; |
| 88 const int kDefaultMaxBitrateBps = 1000000000; | 89 const int kDefaultMaxBitrateBps = 1000000000; |
| 89 | 90 |
| 90 webrtc::SimulatedClock clock_; | 91 webrtc::SimulatedClock clock_; |
| 91 TestBitrateObserver bitrate_observer_; | 92 TestBitrateObserver bitrate_observer_; |
| 92 BitrateController* controller_; | 93 BitrateController* controller_; |
| 93 RtcpBandwidthObserver* bandwidth_observer_; | 94 RtcpBandwidthObserver* bandwidth_observer_; |
| 95 webrtc::MockRtcEventLog event_log_; |
| 94 }; | 96 }; |
| 95 | 97 |
| 96 TEST_F(BitrateControllerTest, DefaultMinMaxBitrate) { | 98 TEST_F(BitrateControllerTest, DefaultMinMaxBitrate) { |
| 97 // Receive successively lower REMBs, verify the reserved bitrate is deducted. | 99 // Receive successively lower REMBs, verify the reserved bitrate is deducted. |
| 98 controller_->SetMinMaxBitrate(0, 0); | 100 controller_->SetMinMaxBitrate(0, 0); |
| 99 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); | 101 EXPECT_EQ(kStartBitrateBps, bitrate_observer_.last_bitrate_); |
| 100 bandwidth_observer_->OnReceivedEstimatedBitrate(kDefaultMinBitrateBps / 2); | 102 bandwidth_observer_->OnReceivedEstimatedBitrate(kDefaultMinBitrateBps / 2); |
| 101 EXPECT_EQ(kDefaultMinBitrateBps, bitrate_observer_.last_bitrate_); | 103 EXPECT_EQ(kDefaultMinBitrateBps, bitrate_observer_.last_bitrate_); |
| 102 bandwidth_observer_->OnReceivedEstimatedBitrate(2 * kDefaultMaxBitrateBps); | 104 bandwidth_observer_->OnReceivedEstimatedBitrate(2 * kDefaultMaxBitrateBps); |
| 103 clock_.AdvanceTimeMilliseconds(1000); | 105 clock_.AdvanceTimeMilliseconds(1000); |
| 104 controller_->Process(); | 106 controller_->Process(); |
| 105 EXPECT_EQ(kDefaultMaxBitrateBps, bitrate_observer_.last_bitrate_); | 107 EXPECT_EQ(kDefaultMaxBitrateBps, bitrate_observer_.last_bitrate_); |
| 106 } | 108 } |
| 107 | 109 |
| 108 TEST_F(BitrateControllerTest, OneBitrateObserverOneRtcpObserver) { | 110 TEST_F(BitrateControllerTest, OneBitrateObserverOneRtcpObserver) { |
| 109 // First REMB applies immediately. | 111 // First REMB applies immediately. |
| 112 EXPECT_CALL(event_log_, LogBwePacketLossEvent(testing::Gt(0), 0, 0)).Times(8); |
| 110 int64_t time_ms = 1001; | 113 int64_t time_ms = 1001; |
| 111 webrtc::ReportBlockList report_blocks; | 114 webrtc::ReportBlockList report_blocks; |
| 112 report_blocks.push_back(CreateReportBlock(1, 2, 0, 1)); | 115 report_blocks.push_back(CreateReportBlock(1, 2, 0, 1)); |
| 113 bandwidth_observer_->OnReceivedEstimatedBitrate(200000); | 116 bandwidth_observer_->OnReceivedEstimatedBitrate(200000); |
| 114 EXPECT_EQ(200000, bitrate_observer_.last_bitrate_); | 117 EXPECT_EQ(200000, bitrate_observer_.last_bitrate_); |
| 115 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); | 118 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); |
| 116 EXPECT_EQ(0, bitrate_observer_.last_rtt_); | 119 EXPECT_EQ(0, bitrate_observer_.last_rtt_); |
| 117 bandwidth_observer_->OnReceivedRtcpReceiverReport(report_blocks, 50, time_ms); | 120 bandwidth_observer_->OnReceivedRtcpReceiverReport(report_blocks, 50, time_ms); |
| 118 report_blocks.clear(); | 121 report_blocks.clear(); |
| 119 time_ms += 2000; | 122 time_ms += 2000; |
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| 176 EXPECT_EQ(250000, bitrate_observer_.last_bitrate_); | 179 EXPECT_EQ(250000, bitrate_observer_.last_bitrate_); |
| 177 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); | 180 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); |
| 178 EXPECT_EQ(50, bitrate_observer_.last_rtt_); | 181 EXPECT_EQ(50, bitrate_observer_.last_rtt_); |
| 179 | 182 |
| 180 bandwidth_observer_->OnReceivedEstimatedBitrate(1000); | 183 bandwidth_observer_->OnReceivedEstimatedBitrate(1000); |
| 181 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); | 184 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); |
| 182 } | 185 } |
| 183 | 186 |
| 184 TEST_F(BitrateControllerTest, OneBitrateObserverTwoRtcpObservers) { | 187 TEST_F(BitrateControllerTest, OneBitrateObserverTwoRtcpObservers) { |
| 185 // REMBs during the first 2 seconds apply immediately. | 188 // REMBs during the first 2 seconds apply immediately. |
| 189 EXPECT_CALL(event_log_, LogBwePacketLossEvent(testing::Gt(0), 0, 0)).Times(9); |
| 186 int64_t time_ms = 1; | 190 int64_t time_ms = 1; |
| 187 webrtc::ReportBlockList report_blocks; | 191 webrtc::ReportBlockList report_blocks; |
| 188 report_blocks.push_back(CreateReportBlock(1, 2, 0, 1)); | 192 report_blocks.push_back(CreateReportBlock(1, 2, 0, 1)); |
| 189 bandwidth_observer_->OnReceivedRtcpReceiverReport(report_blocks, 50, time_ms); | 193 bandwidth_observer_->OnReceivedRtcpReceiverReport(report_blocks, 50, time_ms); |
| 190 report_blocks.clear(); | 194 report_blocks.clear(); |
| 191 time_ms += 500; | 195 time_ms += 500; |
| 192 | 196 |
| 193 RtcpBandwidthObserver* second_bandwidth_observer = | 197 RtcpBandwidthObserver* second_bandwidth_observer = |
| 194 controller_->CreateRtcpBandwidthObserver(); | 198 controller_->CreateRtcpBandwidthObserver(); |
| 195 | 199 |
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| 271 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); | 275 EXPECT_EQ(0, bitrate_observer_.last_fraction_loss_); |
| 272 EXPECT_EQ(50, bitrate_observer_.last_rtt_); | 276 EXPECT_EQ(50, bitrate_observer_.last_rtt_); |
| 273 | 277 |
| 274 // Min cap. | 278 // Min cap. |
| 275 bandwidth_observer_->OnReceivedEstimatedBitrate(1000); | 279 bandwidth_observer_->OnReceivedEstimatedBitrate(1000); |
| 276 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); | 280 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); |
| 277 delete second_bandwidth_observer; | 281 delete second_bandwidth_observer; |
| 278 } | 282 } |
| 279 | 283 |
| 280 TEST_F(BitrateControllerTest, OneBitrateObserverMultipleReportBlocks) { | 284 TEST_F(BitrateControllerTest, OneBitrateObserverMultipleReportBlocks) { |
| 285 testing::Expectation first_calls = |
| 286 EXPECT_CALL(event_log_, LogBwePacketLossEvent(testing::Gt(0), 0, 0)) |
| 287 .Times(7); |
| 288 EXPECT_CALL(event_log_, |
| 289 LogBwePacketLossEvent(testing::Gt(0), testing::Gt(0), 0)) |
| 290 .Times(2) |
| 291 .After(first_calls); |
| 281 uint32_t sequence_number[2] = {0, 0xFF00}; | 292 uint32_t sequence_number[2] = {0, 0xFF00}; |
| 282 const int kStartBitrate = 200000; | 293 const int kStartBitrate = 200000; |
| 283 const int kMinBitrate = 100000; | 294 const int kMinBitrate = 100000; |
| 284 const int kMaxBitrate = 300000; | 295 const int kMaxBitrate = 300000; |
| 285 controller_->SetStartBitrate(kStartBitrate); | 296 controller_->SetStartBitrate(kStartBitrate); |
| 286 controller_->SetMinMaxBitrate(kMinBitrate, kMaxBitrate); | 297 controller_->SetMinMaxBitrate(kMinBitrate, kMaxBitrate); |
| 287 | 298 |
| 288 // REMBs during the first 2 seconds apply immediately. | 299 // REMBs during the first 2 seconds apply immediately. |
| 289 int64_t time_ms = 1001; | 300 int64_t time_ms = 1001; |
| 290 webrtc::ReportBlockList report_blocks; | 301 webrtc::ReportBlockList report_blocks; |
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| 397 EXPECT_EQ(120000, bitrate_observer_.last_bitrate_); | 408 EXPECT_EQ(120000, bitrate_observer_.last_bitrate_); |
| 398 controller_->SetReservedBitrate(50000); | 409 controller_->SetReservedBitrate(50000); |
| 399 bandwidth_observer_->OnReceivedEstimatedBitrate(120000); | 410 bandwidth_observer_->OnReceivedEstimatedBitrate(120000); |
| 400 // Limited by min bitrate. | 411 // Limited by min bitrate. |
| 401 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); | 412 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); |
| 402 | 413 |
| 403 controller_->SetReservedBitrate(10000); | 414 controller_->SetReservedBitrate(10000); |
| 404 bandwidth_observer_->OnReceivedEstimatedBitrate(1); | 415 bandwidth_observer_->OnReceivedEstimatedBitrate(1); |
| 405 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); | 416 EXPECT_EQ(100000, bitrate_observer_.last_bitrate_); |
| 406 } | 417 } |
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