call/rtp_video_sender_unittest.cc - src - Git at Google

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */

 #include <memory>
 #include <string>

 #include "call/rtp_transport_controller_send.h"
 #include "call/rtp_video_sender.h"
 #include "modules/video_coding/fec_controller_default.h"
 #include "modules/video_coding/include/video_codec_interface.h"
 #include "rtc_base/rate_limiter.h"
 #include "test/field_trial.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
 #include "test/mock_transport.h"
 #include "video/call_stats.h"
 #include "video/send_delay_stats.h"
 #include "video/send_statistics_proxy.h"

 using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::Invoke;
 using ::testing::NiceMock;
 using ::testing::Return;
 using ::testing::Unused;

 namespace webrtc {
 namespace {
 const int8_t kPayloadType = 96;
 const uint32_t kSsrc1 = 12345;
 const uint32_t kSsrc2 = 23456;
 const int16_t kInitialPictureId1 = 222;
 const int16_t kInitialPictureId2 = 44;
 const int16_t kInitialTl0PicIdx1 = 99;
 const int16_t kInitialTl0PicIdx2 = 199;
 const int64_t kRetransmitWindowSizeMs = 500;

 class MockRtcpIntraFrameObserver : public RtcpIntraFrameObserver {
  public:
   MOCK_METHOD1(OnReceivedIntraFrameRequest, void(uint32_t));
 };

 class MockCongestionObserver : public NetworkChangedObserver {
  public:
   MOCK_METHOD4(OnNetworkChanged,
                void(uint32_t bitrate_bps,
                     uint8_t fraction_loss,
                     int64_t rtt_ms,
                     int64_t probing_interval_ms));
 };

 RtpSenderObservers CreateObservers(
     RtcpRttStats* rtcp_rtt_stats,
     RtcpIntraFrameObserver* intra_frame_callback,
     RtcpStatisticsCallback* rtcp_stats,
     StreamDataCountersCallback* rtp_stats,
     BitrateStatisticsObserver* bitrate_observer,
     FrameCountObserver* frame_count_observer,
     RtcpPacketTypeCounterObserver* rtcp_type_observer,
     SendSideDelayObserver* send_delay_observer,
     SendPacketObserver* send_packet_observer) {
   RtpSenderObservers observers;
   observers.rtcp_rtt_stats = rtcp_rtt_stats;
   observers.intra_frame_callback = intra_frame_callback;
   observers.rtcp_stats = rtcp_stats;
   observers.rtp_stats = rtp_stats;
   observers.bitrate_observer = bitrate_observer;
   observers.frame_count_observer = frame_count_observer;
   observers.rtcp_type_observer = rtcp_type_observer;
   observers.send_delay_observer = send_delay_observer;
   observers.send_packet_observer = send_packet_observer;
   return observers;
 }

 class RtpVideoSenderTestFixture {
  public:
   RtpVideoSenderTestFixture(
       const std::vector<uint32_t>& ssrcs,
       int payload_type,
       const std::map<uint32_t, RtpPayloadState>& suspended_payload_states)
       : clock_(0),
         config_(&transport_),
         send_delay_stats_(&clock_),
         transport_controller_(&clock_, &event_log_, nullptr, bitrate_config_),
         process_thread_(ProcessThread::Create("test_thread")),
         call_stats_(&clock_, process_thread_.get()),
         stats_proxy_(&clock_,
                      config_,
                      VideoEncoderConfig::ContentType::kRealtimeVideo),
         retransmission_rate_limiter_(&clock_, kRetransmitWindowSizeMs) {
     for (uint32_t ssrc : ssrcs) {
       config_.rtp.ssrcs.push_back(ssrc);
     }
     config_.rtp.payload_type = payload_type;
     std::map<uint32_t, RtpState> suspended_ssrcs;
     router_ = absl::make_unique<RtpVideoSender>(
         config_.rtp.ssrcs, suspended_ssrcs, suspended_payload_states,
         config_.rtp, config_.rtcp_report_interval_ms, &transport_,
         CreateObservers(&call_stats_, &encoder_feedback_, &stats_proxy_,
                         &stats_proxy_, &stats_proxy_, &stats_proxy_,
                         &stats_proxy_, &stats_proxy_, &send_delay_stats_),
         &transport_controller_, &event_log_, &retransmission_rate_limiter_,
         absl::make_unique<FecControllerDefault>(&clock_), nullptr,
         CryptoOptions{});
   }

   RtpVideoSender* router() { return router_.get(); }

  private:
   NiceMock<MockTransport> transport_;
   NiceMock<MockCongestionObserver> congestion_observer_;
   NiceMock<MockRtcpIntraFrameObserver> encoder_feedback_;
   SimulatedClock clock_;
   RtcEventLogNullImpl event_log_;
   VideoSendStream::Config config_;
   SendDelayStats send_delay_stats_;
   BitrateConstraints bitrate_config_;
   RtpTransportControllerSend transport_controller_;
   std::unique_ptr<ProcessThread> process_thread_;
   CallStats call_stats_;
   SendStatisticsProxy stats_proxy_;
   RateLimiter retransmission_rate_limiter_;
   std::unique_ptr<RtpVideoSender> router_;
 };
 }  // namespace

 class RtpVideoSenderTest : public ::testing::Test,
                            public ::testing::WithParamInterface<std::string> {
  public:
   RtpVideoSenderTest() : field_trial_(GetParam()) {}

  private:
   test::ScopedFieldTrials field_trial_;
 };

 INSTANTIATE_TEST_CASE_P(Default, RtpVideoSenderTest, ::testing::Values(""));

 INSTANTIATE_TEST_CASE_P(
     TaskQueueTrial,
     RtpVideoSenderTest,
     ::testing::Values("WebRTC-TaskQueueCongestionControl/Enabled/"));

 TEST_P(RtpVideoSenderTest, SendOnOneModule) {
   uint8_t payload = 'a';
   EncodedImage encoded_image;
   encoded_image.SetTimestamp(1);
   encoded_image.capture_time_ms_ = 2;
   encoded_image._frameType = kVideoFrameKey;
   encoded_image._buffer = &payload;
   encoded_image._length = 1;

   RtpVideoSenderTestFixture test({kSsrc1}, kPayloadType, {});
   EXPECT_NE(
       EncodedImageCallback::Result::OK,
       test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

   test.router()->SetActive(true);
   EXPECT_EQ(
       EncodedImageCallback::Result::OK,
       test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

   test.router()->SetActive(false);
   EXPECT_NE(
       EncodedImageCallback::Result::OK,
       test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

   test.router()->SetActive(true);
   EXPECT_EQ(
       EncodedImageCallback::Result::OK,
       test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);
 }

 TEST_P(RtpVideoSenderTest, SendSimulcastSetActive) {
   uint8_t payload = 'a';
   EncodedImage encoded_image_1;
   encoded_image_1.SetTimestamp(1);
   encoded_image_1.capture_time_ms_ = 2;
   encoded_image_1._frameType = kVideoFrameKey;
   encoded_image_1._buffer = &payload;
   encoded_image_1._length = 1;

   RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});

   CodecSpecificInfo codec_info;
   memset(&codec_info, 0, sizeof(CodecSpecificInfo));
   codec_info.codecType = kVideoCodecVP8;

   test.router()->SetActive(true);
   EXPECT_EQ(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
                 .error);

   EncodedImage encoded_image_2(encoded_image_1);
   encoded_image_2.SetSpatialIndex(1);
   EXPECT_EQ(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_2, &codec_info, nullptr)
                 .error);

   // Inactive.
   test.router()->SetActive(false);
   EXPECT_NE(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
                 .error);
   EXPECT_NE(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_2, &codec_info, nullptr)
                 .error);
 }

 // Tests how setting individual rtp modules to active affects the overall
 // behavior of the payload router. First sets one module to active and checks
 // that outgoing data can be sent on this module, and checks that no data can
 // be sent if both modules are inactive.
 TEST_P(RtpVideoSenderTest, SendSimulcastSetActiveModules) {
   uint8_t payload = 'a';
   EncodedImage encoded_image_1;
   encoded_image_1.SetTimestamp(1);
   encoded_image_1.capture_time_ms_ = 2;
   encoded_image_1._frameType = kVideoFrameKey;
   encoded_image_1._buffer = &payload;
   encoded_image_1._length = 1;
   EncodedImage encoded_image_2(encoded_image_1);
   encoded_image_2.SetSpatialIndex(1);

   RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});
   CodecSpecificInfo codec_info;
   memset(&codec_info, 0, sizeof(CodecSpecificInfo));
   codec_info.codecType = kVideoCodecVP8;

   // Only setting one stream to active will still set the payload router to
   // active and allow sending data on the active stream.
   std::vector<bool> active_modules({true, false});
   test.router()->SetActiveModules(active_modules);
   EXPECT_EQ(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
                 .error);

   // Setting both streams to inactive will turn the payload router to
   // inactive.
   active_modules = {false, false};
   test.router()->SetActiveModules(active_modules);
   // An incoming encoded image will not ask the module to send outgoing data
   // because the payload router is inactive.
   EXPECT_NE(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
                 .error);
   EXPECT_NE(EncodedImageCallback::Result::OK,
             test.router()
                 ->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
                 .error);
 }

 TEST_P(RtpVideoSenderTest, CreateWithNoPreviousStates) {
   RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});
   test.router()->SetActive(true);

   std::map<uint32_t, RtpPayloadState> initial_states =
       test.router()->GetRtpPayloadStates();
   EXPECT_EQ(2u, initial_states.size());
   EXPECT_NE(initial_states.find(kSsrc1), initial_states.end());
   EXPECT_NE(initial_states.find(kSsrc2), initial_states.end());
 }

 TEST_P(RtpVideoSenderTest, CreateWithPreviousStates) {
   const int64_t kState1SharedFrameId = 123;
   const int64_t kState2SharedFrameId = 234;
   RtpPayloadState state1;
   state1.picture_id = kInitialPictureId1;
   state1.tl0_pic_idx = kInitialTl0PicIdx1;
   state1.shared_frame_id = kState1SharedFrameId;
   RtpPayloadState state2;
   state2.picture_id = kInitialPictureId2;
   state2.tl0_pic_idx = kInitialTl0PicIdx2;
   state2.shared_frame_id = kState2SharedFrameId;
   std::map<uint32_t, RtpPayloadState> states = {{kSsrc1, state1},
                                                 {kSsrc2, state2}};

   RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, states);
   test.router()->SetActive(true);

   std::map<uint32_t, RtpPayloadState> initial_states =
       test.router()->GetRtpPayloadStates();
   EXPECT_EQ(2u, initial_states.size());
   EXPECT_EQ(kInitialPictureId1, initial_states[kSsrc1].picture_id);
   EXPECT_EQ(kInitialTl0PicIdx1, initial_states[kSsrc1].tl0_pic_idx);
   EXPECT_EQ(kInitialPictureId2, initial_states[kSsrc2].picture_id);
   EXPECT_EQ(kInitialTl0PicIdx2, initial_states[kSsrc2].tl0_pic_idx);
   EXPECT_EQ(kState2SharedFrameId, initial_states[kSsrc1].shared_frame_id);
   EXPECT_EQ(kState2SharedFrameId, initial_states[kSsrc2].shared_frame_id);
 }
 }  // namespace webrtc
	/*
	* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
	*
	* Use of this source code is governed by a BSD-style license
	* that can be found in the LICENSE file in the root of the source
	* tree. An additional intellectual property rights grant can be found
	* in the file PATENTS. All contributing project authors may
	* be found in the AUTHORS file in the root of the source tree.
	*/

	#include <memory>
	#include <string>

	#include "call/rtp_transport_controller_send.h"
	#include "call/rtp_video_sender.h"
	#include "modules/video_coding/fec_controller_default.h"
	#include "modules/video_coding/include/video_codec_interface.h"
	#include "rtc_base/rate_limiter.h"
	#include "test/field_trial.h"
	#include "test/gmock.h"
	#include "test/gtest.h"
	#include "test/mock_transport.h"
	#include "video/call_stats.h"
	#include "video/send_delay_stats.h"
	#include "video/send_statistics_proxy.h"

	using ::testing::_;
	using ::testing::AnyNumber;
	using ::testing::Invoke;
	using ::testing::NiceMock;
	using ::testing::Return;
	using ::testing::Unused;

	namespace webrtc {
	namespace {
	const int8_t kPayloadType = 96;
	const uint32_t kSsrc1 = 12345;
	const uint32_t kSsrc2 = 23456;
	const int16_t kInitialPictureId1 = 222;
	const int16_t kInitialPictureId2 = 44;
	const int16_t kInitialTl0PicIdx1 = 99;
	const int16_t kInitialTl0PicIdx2 = 199;
	const int64_t kRetransmitWindowSizeMs = 500;

	class MockRtcpIntraFrameObserver : public RtcpIntraFrameObserver {
	public:
	MOCK_METHOD1(OnReceivedIntraFrameRequest, void(uint32_t));
	};

	class MockCongestionObserver : public NetworkChangedObserver {
	public:
	MOCK_METHOD4(OnNetworkChanged,
	void(uint32_t bitrate_bps,
	uint8_t fraction_loss,
	int64_t rtt_ms,
	int64_t probing_interval_ms));
	};

	RtpSenderObservers CreateObservers(
	RtcpRttStats* rtcp_rtt_stats,
	RtcpIntraFrameObserver* intra_frame_callback,
	RtcpStatisticsCallback* rtcp_stats,
	StreamDataCountersCallback* rtp_stats,
	BitrateStatisticsObserver* bitrate_observer,
	FrameCountObserver* frame_count_observer,
	RtcpPacketTypeCounterObserver* rtcp_type_observer,
	SendSideDelayObserver* send_delay_observer,
	SendPacketObserver* send_packet_observer) {
	RtpSenderObservers observers;
	observers.rtcp_rtt_stats = rtcp_rtt_stats;
	observers.intra_frame_callback = intra_frame_callback;
	observers.rtcp_stats = rtcp_stats;
	observers.rtp_stats = rtp_stats;
	observers.bitrate_observer = bitrate_observer;
	observers.frame_count_observer = frame_count_observer;
	observers.rtcp_type_observer = rtcp_type_observer;
	observers.send_delay_observer = send_delay_observer;
	observers.send_packet_observer = send_packet_observer;
	return observers;
	}

	class RtpVideoSenderTestFixture {
	public:
	RtpVideoSenderTestFixture(
	const std::vector<uint32_t>& ssrcs,
	int payload_type,
	const std::map<uint32_t, RtpPayloadState>& suspended_payload_states)
	: clock_(0),
	config_(&transport_),
	send_delay_stats_(&clock_),
	transport_controller_(&clock_, &event_log_, nullptr, bitrate_config_),
	process_thread_(ProcessThread::Create("test_thread")),
	call_stats_(&clock_, process_thread_.get()),
	stats_proxy_(&clock_,
	config_,
	VideoEncoderConfig::ContentType::kRealtimeVideo),
	retransmission_rate_limiter_(&clock_, kRetransmitWindowSizeMs) {
	for (uint32_t ssrc : ssrcs) {
	config_.rtp.ssrcs.push_back(ssrc);
	}
	config_.rtp.payload_type = payload_type;
	std::map<uint32_t, RtpState> suspended_ssrcs;
	router_ = absl::make_unique<RtpVideoSender>(
	config_.rtp.ssrcs, suspended_ssrcs, suspended_payload_states,
	config_.rtp, config_.rtcp_report_interval_ms, &transport_,
	CreateObservers(&call_stats_, &encoder_feedback_, &stats_proxy_,
	&stats_proxy_, &stats_proxy_, &stats_proxy_,
	&stats_proxy_, &stats_proxy_, &send_delay_stats_),
	&transport_controller_, &event_log_, &retransmission_rate_limiter_,
	absl::make_unique<FecControllerDefault>(&clock_), nullptr,
	CryptoOptions{});
	}

	RtpVideoSender* router() { return router_.get(); }

	private:
	NiceMock<MockTransport> transport_;
	NiceMock<MockCongestionObserver> congestion_observer_;
	NiceMock<MockRtcpIntraFrameObserver> encoder_feedback_;
	SimulatedClock clock_;
	RtcEventLogNullImpl event_log_;
	VideoSendStream::Config config_;
	SendDelayStats send_delay_stats_;
	BitrateConstraints bitrate_config_;
	RtpTransportControllerSend transport_controller_;
	std::unique_ptr<ProcessThread> process_thread_;
	CallStats call_stats_;
	SendStatisticsProxy stats_proxy_;
	RateLimiter retransmission_rate_limiter_;
	std::unique_ptr<RtpVideoSender> router_;
	};
	} // namespace

	class RtpVideoSenderTest : public ::testing::Test,
	public ::testing::WithParamInterface<std::string> {
	public:
	RtpVideoSenderTest() : field_trial_(GetParam()) {}

	private:
	test::ScopedFieldTrials field_trial_;
	};

	INSTANTIATE_TEST_CASE_P(Default, RtpVideoSenderTest, ::testing::Values(""));

	INSTANTIATE_TEST_CASE_P(
	TaskQueueTrial,
	RtpVideoSenderTest,
	::testing::Values("WebRTC-TaskQueueCongestionControl/Enabled/"));

	TEST_P(RtpVideoSenderTest, SendOnOneModule) {
	uint8_t payload = 'a';
	EncodedImage encoded_image;
	encoded_image.SetTimestamp(1);
	encoded_image.capture_time_ms_ = 2;
	encoded_image._frameType = kVideoFrameKey;
	encoded_image._buffer = &payload;
	encoded_image._length = 1;

	RtpVideoSenderTestFixture test({kSsrc1}, kPayloadType, {});
	EXPECT_NE(
	EncodedImageCallback::Result::OK,
	test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

	test.router()->SetActive(true);
	EXPECT_EQ(
	EncodedImageCallback::Result::OK,
	test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

	test.router()->SetActive(false);
	EXPECT_NE(
	EncodedImageCallback::Result::OK,
	test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);

	test.router()->SetActive(true);
	EXPECT_EQ(
	EncodedImageCallback::Result::OK,
	test.router()->OnEncodedImage(encoded_image, nullptr, nullptr).error);
	}

	TEST_P(RtpVideoSenderTest, SendSimulcastSetActive) {
	uint8_t payload = 'a';
	EncodedImage encoded_image_1;
	encoded_image_1.SetTimestamp(1);
	encoded_image_1.capture_time_ms_ = 2;
	encoded_image_1._frameType = kVideoFrameKey;
	encoded_image_1._buffer = &payload;
	encoded_image_1._length = 1;

	RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});

	CodecSpecificInfo codec_info;
	memset(&codec_info, 0, sizeof(CodecSpecificInfo));
	codec_info.codecType = kVideoCodecVP8;

	test.router()->SetActive(true);
	EXPECT_EQ(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
	.error);

	EncodedImage encoded_image_2(encoded_image_1);
	encoded_image_2.SetSpatialIndex(1);
	EXPECT_EQ(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_2, &codec_info, nullptr)
	.error);

	// Inactive.
	test.router()->SetActive(false);
	EXPECT_NE(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
	.error);
	EXPECT_NE(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_2, &codec_info, nullptr)
	.error);
	}

	// Tests how setting individual rtp modules to active affects the overall
	// behavior of the payload router. First sets one module to active and checks
	// that outgoing data can be sent on this module, and checks that no data can
	// be sent if both modules are inactive.
	TEST_P(RtpVideoSenderTest, SendSimulcastSetActiveModules) {
	uint8_t payload = 'a';
	EncodedImage encoded_image_1;
	encoded_image_1.SetTimestamp(1);
	encoded_image_1.capture_time_ms_ = 2;
	encoded_image_1._frameType = kVideoFrameKey;
	encoded_image_1._buffer = &payload;
	encoded_image_1._length = 1;
	EncodedImage encoded_image_2(encoded_image_1);
	encoded_image_2.SetSpatialIndex(1);

	RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});
	CodecSpecificInfo codec_info;
	memset(&codec_info, 0, sizeof(CodecSpecificInfo));
	codec_info.codecType = kVideoCodecVP8;

	// Only setting one stream to active will still set the payload router to
	// active and allow sending data on the active stream.
	std::vector<bool> active_modules({true, false});
	test.router()->SetActiveModules(active_modules);
	EXPECT_EQ(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
	.error);

	// Setting both streams to inactive will turn the payload router to
	// inactive.
	active_modules = {false, false};
	test.router()->SetActiveModules(active_modules);
	// An incoming encoded image will not ask the module to send outgoing data
	// because the payload router is inactive.
	EXPECT_NE(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
	.error);
	EXPECT_NE(EncodedImageCallback::Result::OK,
	test.router()
	->OnEncodedImage(encoded_image_1, &codec_info, nullptr)
	.error);
	}

	TEST_P(RtpVideoSenderTest, CreateWithNoPreviousStates) {
	RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, {});
	test.router()->SetActive(true);

	std::map<uint32_t, RtpPayloadState> initial_states =
	test.router()->GetRtpPayloadStates();
	EXPECT_EQ(2u, initial_states.size());
	EXPECT_NE(initial_states.find(kSsrc1), initial_states.end());
	EXPECT_NE(initial_states.find(kSsrc2), initial_states.end());
	}

	TEST_P(RtpVideoSenderTest, CreateWithPreviousStates) {
	const int64_t kState1SharedFrameId = 123;
	const int64_t kState2SharedFrameId = 234;
	RtpPayloadState state1;
	state1.picture_id = kInitialPictureId1;
	state1.tl0_pic_idx = kInitialTl0PicIdx1;
	state1.shared_frame_id = kState1SharedFrameId;
	RtpPayloadState state2;
	state2.picture_id = kInitialPictureId2;
	state2.tl0_pic_idx = kInitialTl0PicIdx2;
	state2.shared_frame_id = kState2SharedFrameId;
	std::map<uint32_t, RtpPayloadState> states = {{kSsrc1, state1},
	{kSsrc2, state2}};

	RtpVideoSenderTestFixture test({kSsrc1, kSsrc2}, kPayloadType, states);
	test.router()->SetActive(true);

	std::map<uint32_t, RtpPayloadState> initial_states =
	test.router()->GetRtpPayloadStates();
	EXPECT_EQ(2u, initial_states.size());
	EXPECT_EQ(kInitialPictureId1, initial_states[kSsrc1].picture_id);
	EXPECT_EQ(kInitialTl0PicIdx1, initial_states[kSsrc1].tl0_pic_idx);
	EXPECT_EQ(kInitialPictureId2, initial_states[kSsrc2].picture_id);
	EXPECT_EQ(kInitialTl0PicIdx2, initial_states[kSsrc2].tl0_pic_idx);
	EXPECT_EQ(kState2SharedFrameId, initial_states[kSsrc1].shared_frame_id);
	EXPECT_EQ(kState2SharedFrameId, initial_states[kSsrc2].shared_frame_id);
	}
	} // namespace webrtc