250 lines
8.3 KiB
C++
250 lines
8.3 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <memory>
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#include <vector>
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#include "testing/gmock/include/gmock/gmock.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h"
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#include "webrtc/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h"
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#include "webrtc/modules/utility/include/mock/mock_process_thread.h"
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#include "webrtc/video/vie_remb.h"
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using ::testing::_;
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using ::testing::AnyNumber;
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using ::testing::NiceMock;
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using ::testing::Return;
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namespace webrtc {
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class ViERembTest : public ::testing::Test {
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public:
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ViERembTest() : fake_clock_(12345) {}
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protected:
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virtual void SetUp() {
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process_thread_.reset(new NiceMock<MockProcessThread>);
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vie_remb_.reset(new VieRemb(&fake_clock_));
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}
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SimulatedClock fake_clock_;
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std::unique_ptr<MockProcessThread> process_thread_;
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std::unique_ptr<VieRemb> vie_remb_;
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};
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TEST_F(ViERembTest, OneModuleTestForSendingRemb) {
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MockRtpRtcp rtp;
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vie_remb_->AddReceiveChannel(&rtp);
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vie_remb_->AddRembSender(&rtp);
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const uint32_t bitrate_estimate = 456;
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uint32_t ssrc = 1234;
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std::vector<uint32_t> ssrcs(&ssrc, &ssrc + 1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Lower bitrate to send another REMB packet.
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EXPECT_CALL(rtp, SetREMBData(bitrate_estimate - 100, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate - 100);
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vie_remb_->RemoveReceiveChannel(&rtp);
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vie_remb_->RemoveRembSender(&rtp);
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}
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TEST_F(ViERembTest, LowerEstimateToSendRemb) {
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MockRtpRtcp rtp;
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vie_remb_->AddReceiveChannel(&rtp);
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vie_remb_->AddRembSender(&rtp);
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uint32_t bitrate_estimate = 456;
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uint32_t ssrc = 1234;
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std::vector<uint32_t> ssrcs(&ssrc, &ssrc + 1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Lower the estimate with more than 3% to trigger a call to SetREMBData right
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// away.
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bitrate_estimate = bitrate_estimate - 100;
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EXPECT_CALL(rtp, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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}
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TEST_F(ViERembTest, VerifyIncreasingAndDecreasing) {
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MockRtpRtcp rtp_0;
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MockRtpRtcp rtp_1;
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vie_remb_->AddReceiveChannel(&rtp_0);
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vie_remb_->AddRembSender(&rtp_0);
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vie_remb_->AddReceiveChannel(&rtp_1);
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uint32_t bitrate_estimate[] = {456, 789};
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uint32_t ssrc[] = {1234, 5678};
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std::vector<uint32_t> ssrcs(ssrc, ssrc + sizeof(ssrc) / sizeof(ssrc[0]));
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate[0]);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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EXPECT_CALL(rtp_0, SetREMBData(bitrate_estimate[0], ssrcs))
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.Times(1);
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fake_clock_.AdvanceTimeMilliseconds(1000);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate[0]);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate[1] + 100);
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// Lower the estimate to trigger a callback.
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EXPECT_CALL(rtp_0, SetREMBData(bitrate_estimate[1], ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate[1]);
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vie_remb_->RemoveReceiveChannel(&rtp_0);
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vie_remb_->RemoveRembSender(&rtp_0);
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vie_remb_->RemoveReceiveChannel(&rtp_1);
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}
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TEST_F(ViERembTest, NoRembForIncreasedBitrate) {
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MockRtpRtcp rtp_0;
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MockRtpRtcp rtp_1;
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vie_remb_->AddReceiveChannel(&rtp_0);
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vie_remb_->AddRembSender(&rtp_0);
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vie_remb_->AddReceiveChannel(&rtp_1);
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uint32_t bitrate_estimate = 456;
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uint32_t ssrc[] = {1234, 5678};
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std::vector<uint32_t> ssrcs(ssrc, ssrc + sizeof(ssrc) / sizeof(ssrc[0]));
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp_0, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Increased estimate shouldn't trigger a callback right away.
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EXPECT_CALL(rtp_0, SetREMBData(_, _))
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.Times(0);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate + 1);
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// Decreasing the estimate less than 3% shouldn't trigger a new callback.
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EXPECT_CALL(rtp_0, SetREMBData(_, _))
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.Times(0);
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int lower_estimate = bitrate_estimate * 98 / 100;
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vie_remb_->OnReceiveBitrateChanged(ssrcs, lower_estimate);
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vie_remb_->RemoveReceiveChannel(&rtp_1);
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vie_remb_->RemoveReceiveChannel(&rtp_0);
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vie_remb_->RemoveRembSender(&rtp_0);
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}
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TEST_F(ViERembTest, ChangeSendRtpModule) {
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MockRtpRtcp rtp_0;
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MockRtpRtcp rtp_1;
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vie_remb_->AddReceiveChannel(&rtp_0);
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vie_remb_->AddRembSender(&rtp_0);
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vie_remb_->AddReceiveChannel(&rtp_1);
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uint32_t bitrate_estimate = 456;
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uint32_t ssrc[] = {1234, 5678};
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std::vector<uint32_t> ssrcs(ssrc, ssrc + sizeof(ssrc) / sizeof(ssrc[0]));
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp_0, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Decrease estimate to trigger a REMB.
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bitrate_estimate = bitrate_estimate - 100;
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EXPECT_CALL(rtp_0, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Remove the sending module, add it again -> should get remb on the second
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// module.
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vie_remb_->RemoveRembSender(&rtp_0);
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vie_remb_->AddRembSender(&rtp_1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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bitrate_estimate = bitrate_estimate - 100;
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EXPECT_CALL(rtp_1, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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vie_remb_->RemoveReceiveChannel(&rtp_0);
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vie_remb_->RemoveReceiveChannel(&rtp_1);
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}
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TEST_F(ViERembTest, OnlyOneRembForDoubleProcess) {
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MockRtpRtcp rtp;
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uint32_t bitrate_estimate = 456;
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uint32_t ssrc = 1234;
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std::vector<uint32_t> ssrcs(&ssrc, &ssrc + 1);
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vie_remb_->AddReceiveChannel(&rtp);
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vie_remb_->AddRembSender(&rtp);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp, SetREMBData(_, _))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Lower the estimate, should trigger a call to SetREMBData right away.
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bitrate_estimate = bitrate_estimate - 100;
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EXPECT_CALL(rtp, SetREMBData(bitrate_estimate, ssrcs))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged again, this should not trigger a new callback.
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EXPECT_CALL(rtp, SetREMBData(_, _))
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.Times(0);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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vie_remb_->RemoveReceiveChannel(&rtp);
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vie_remb_->RemoveRembSender(&rtp);
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}
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// Only register receiving modules and make sure we fallback to trigger a REMB
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// packet on this one.
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TEST_F(ViERembTest, NoSendingRtpModule) {
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MockRtpRtcp rtp;
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vie_remb_->AddReceiveChannel(&rtp);
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uint32_t bitrate_estimate = 456;
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uint32_t ssrc = 1234;
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std::vector<uint32_t> ssrcs(&ssrc, &ssrc + 1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Call OnReceiveBitrateChanged twice to get a first estimate.
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fake_clock_.AdvanceTimeMilliseconds(1000);
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EXPECT_CALL(rtp, SetREMBData(_, _))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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// Lower the estimate to trigger a new packet REMB packet.
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bitrate_estimate = bitrate_estimate - 100;
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EXPECT_CALL(rtp, SetREMBData(_, _))
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.Times(1);
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vie_remb_->OnReceiveBitrateChanged(ssrcs, bitrate_estimate);
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}
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} // namespace webrtc
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