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