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@ -23,21 +23,21 @@ using webrtc::BitrateController;
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class TestBitrateObserver: public BitrateObserver {
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public:
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TestBitrateObserver()
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: last_bitrate(0),
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last_fraction_loss(0),
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last_rtt(0) {
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: last_bitrate_(0),
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last_fraction_loss_(0),
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last_rtt_(0) {
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}
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virtual void OnNetworkChanged(const uint32_t bitrate,
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const uint8_t fraction_loss,
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const uint32_t rtt) {
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last_bitrate = bitrate;
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last_fraction_loss = fraction_loss;
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last_rtt = rtt;
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last_bitrate_ = bitrate;
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last_fraction_loss_ = fraction_loss;
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last_rtt_ = rtt;
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}
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uint32_t last_bitrate;
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uint8_t last_fraction_loss;
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uint32_t last_rtt;
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uint32_t last_bitrate_;
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uint8_t last_fraction_loss_;
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uint32_t last_rtt_;
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};
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class BitrateControllerTest : public ::testing::Test {
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@ -74,42 +74,42 @@ TEST_F(BitrateControllerTest, OneBitrateObserverOneRtcpObserver) {
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// Test start bitrate.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 1, 1);
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EXPECT_EQ(bitrate_observer.last_bitrate, 0u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 0u);
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EXPECT_EQ(0u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(0u, bitrate_observer.last_rtt_);
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// Test bitrate increase 8% per second.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 21, 1001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 217000u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 50u);
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EXPECT_EQ(217000u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer.last_rtt_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 41, 2001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 235360u);
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EXPECT_EQ(235360u, bitrate_observer.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 61, 3001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 255189u);
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EXPECT_EQ(255189u, bitrate_observer.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 801, 4001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 276604u);
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EXPECT_EQ(276604u, bitrate_observer.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 101, 5001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 299732u);
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EXPECT_EQ(299732u, bitrate_observer.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 121, 6001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(300000u, bitrate_observer.last_bitrate_); // Max cap.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 141, 7001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(300000u, bitrate_observer.last_bitrate_); // Max cap.
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// Test that a low REMB trigger immediately.
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bandwidth_observer_->OnReceivedEstimatedBitrate(250000);
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EXPECT_EQ(bitrate_observer.last_bitrate, 250000u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 50u);
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EXPECT_EQ(250000u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer.last_rtt_);
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bandwidth_observer_->OnReceivedEstimatedBitrate(1000);
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EXPECT_EQ(bitrate_observer.last_bitrate, 100000u); // Min cap.
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EXPECT_EQ(100000u, bitrate_observer.last_bitrate_); // Min cap.
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controller_->RemoveBitrateObserver(&bitrate_observer);
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}
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@ -126,53 +126,53 @@ TEST_F(BitrateControllerTest, OneBitrateObserverTwoRtcpObservers) {
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// Test start bitrate.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 1, 1);
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 100, 1, 1);
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EXPECT_EQ(bitrate_observer.last_bitrate, 0u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 0u);
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EXPECT_EQ(0u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(0u, bitrate_observer.last_rtt_);
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// Test bitrate increase 8% per second.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 21, 501);
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 100, 21, 1001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 217000u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 100u);
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EXPECT_EQ(217000u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(100u, bitrate_observer.last_rtt_);
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// Extra report should not change estimate.
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 100, 31, 1501);
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EXPECT_EQ(bitrate_observer.last_bitrate, 217000u);
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EXPECT_EQ(217000u, bitrate_observer.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 41, 2001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 235360u);
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EXPECT_EQ(235360u, bitrate_observer.last_bitrate_);
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// Second report should not change estimate.
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 100, 41, 2001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 235360u);
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EXPECT_EQ(235360u, bitrate_observer.last_bitrate_);
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// Reports from only one bandwidth observer is ok.
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 50, 61, 3001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 255189u);
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EXPECT_EQ(255189u, bitrate_observer.last_bitrate_);
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 50, 81, 4001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 276604u);
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EXPECT_EQ(276604u, bitrate_observer.last_bitrate_);
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 50, 101, 5001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 299732u);
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EXPECT_EQ(299732u, bitrate_observer.last_bitrate_);
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 50, 121, 6001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(300000u, bitrate_observer.last_bitrate_); // Max cap.
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second_bandwidth_observer->OnReceivedRtcpReceiverReport(1, 0, 50, 141, 7001);
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EXPECT_EQ(bitrate_observer.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(300000u, bitrate_observer.last_bitrate_); // Max cap.
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// Test that a low REMB trigger immediately.
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// We don't care which bandwidth observer that delivers the REMB.
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second_bandwidth_observer->OnReceivedEstimatedBitrate(250000);
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EXPECT_EQ(bitrate_observer.last_bitrate, 250000u);
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EXPECT_EQ(bitrate_observer.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer.last_rtt, 50u);
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EXPECT_EQ(250000u, bitrate_observer.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer.last_rtt_);
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bandwidth_observer_->OnReceivedEstimatedBitrate(1000);
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EXPECT_EQ(bitrate_observer.last_bitrate, 100000u); // Min cap.
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EXPECT_EQ(100000u, bitrate_observer.last_bitrate_); // Min cap.
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controller_->RemoveBitrateObserver(&bitrate_observer);
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delete second_bandwidth_observer;
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}
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@ -191,72 +191,70 @@ TEST_F(BitrateControllerTest, TwoBitrateObserversOneRtcpObserver) {
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// Test bitrate increase 8% per second, distributed equally.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 21, 1001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 100000u);
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EXPECT_EQ(bitrate_observer_1.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer_1.last_rtt, 50u);
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EXPECT_EQ(100000u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer_1.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer_1.last_rtt_);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 200000u);
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EXPECT_EQ(bitrate_observer_2.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer_2.last_rtt, 50u);
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EXPECT_EQ(200000u, bitrate_observer_2.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer_2.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer_2.last_rtt_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 41, 2001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 112500u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 212500u);
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EXPECT_EQ(112500u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(212500u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 61, 3001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 126000u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 226000u);
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EXPECT_EQ(126000u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(226000u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 81, 4001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 140580u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 240580u);
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EXPECT_EQ(140580u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(240580u, bitrate_observer_2.last_bitrate_);
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// Check that the bitrate sum honor our REMB.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 101, 5001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 150000u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 250000u);
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EXPECT_EQ(150000u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(250000u, bitrate_observer_2.last_bitrate_);
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// Remove REMB cap, higher than sum of max.
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bandwidth_observer_->OnReceivedEstimatedBitrate(700000);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 121, 6001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 166500u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 266500u);
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EXPECT_EQ(166500u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(266500u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 141, 7001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 184320u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 284320u);
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EXPECT_EQ(184320u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(284320u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 161, 8001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 207130u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(207130u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(300000u, bitrate_observer_2.last_bitrate_); // Max cap.
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 181, 9001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 248700u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 300000u);
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EXPECT_EQ(248700u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(300000u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 201, 10001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 293596u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 300000u);
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EXPECT_EQ(293596u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(300000u, bitrate_observer_2.last_bitrate_);
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bandwidth_observer_->OnReceivedRtcpReceiverReport(1, 0, 50, 221, 11001);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 300000u); // Max cap.
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 300000u);
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EXPECT_EQ(300000u, bitrate_observer_1.last_bitrate_); // Max cap.
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EXPECT_EQ(300000u, bitrate_observer_2.last_bitrate_);
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// Test that a low REMB trigger immediately.
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bandwidth_observer_->OnReceivedEstimatedBitrate(350000);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 125000u);
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EXPECT_EQ(bitrate_observer_1.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer_1.last_rtt, 50u);
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 225000u);
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EXPECT_EQ(bitrate_observer_2.last_fraction_loss, 0);
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EXPECT_EQ(bitrate_observer_2.last_rtt, 50u);
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EXPECT_EQ(125000u, bitrate_observer_1.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer_1.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer_1.last_rtt_);
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EXPECT_EQ(225000u, bitrate_observer_2.last_bitrate_);
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EXPECT_EQ(0, bitrate_observer_2.last_fraction_loss_);
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EXPECT_EQ(50u, bitrate_observer_2.last_rtt_);
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bandwidth_observer_->OnReceivedEstimatedBitrate(1000);
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EXPECT_EQ(bitrate_observer_1.last_bitrate, 100000u); // Min cap.
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EXPECT_EQ(bitrate_observer_2.last_bitrate, 200000u); // Min cap.
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EXPECT_EQ(100000u, bitrate_observer_1.last_bitrate_); // Min cap.
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EXPECT_EQ(200000u, bitrate_observer_2.last_bitrate_); // Min cap.
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controller_->RemoveBitrateObserver(&bitrate_observer_1);
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controller_->RemoveBitrateObserver(&bitrate_observer_2);
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}
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