test/call_test.cc - src/webrtc - Git at Google

 /*
  *  Copyright (c) 2014 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 "webrtc/test/call_test.h"

 #include <algorithm>

 #include "webrtc/base/checks.h"
 #include "webrtc/config.h"
 #include "webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.h"
 #include "webrtc/modules/audio_mixer/audio_mixer_impl.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/voice_engine/include/voe_base.h"

 namespace webrtc {
 namespace test {

 namespace {
 const int kVideoRotationRtpExtensionId = 4;
 }

 CallTest::CallTest()
     : clock_(Clock::GetRealTimeClock()),
       video_send_config_(nullptr),
       video_send_stream_(nullptr),
       audio_send_config_(nullptr),
       audio_send_stream_(nullptr),
       fake_encoder_(clock_),
       num_video_streams_(1),
       num_audio_streams_(0),
       num_flexfec_streams_(0),
       decoder_factory_(CreateBuiltinAudioDecoderFactory()),
       fake_send_audio_device_(nullptr),
       fake_recv_audio_device_(nullptr) {}

 CallTest::~CallTest() {
 }

 void CallTest::RunBaseTest(BaseTest* test) {
   num_video_streams_ = test->GetNumVideoStreams();
   num_audio_streams_ = test->GetNumAudioStreams();
   num_flexfec_streams_ = test->GetNumFlexfecStreams();
   RTC_DCHECK(num_video_streams_ > 0 || num_audio_streams_ > 0);
   Call::Config send_config(test->GetSenderCallConfig());
   if (num_audio_streams_ > 0) {
     CreateVoiceEngines();
     AudioState::Config audio_state_config;
     audio_state_config.voice_engine = voe_send_.voice_engine;
     audio_state_config.audio_mixer = AudioMixerImpl::Create();
     send_config.audio_state = AudioState::Create(audio_state_config);
   }
   CreateSenderCall(send_config);
   if (test->ShouldCreateReceivers()) {
     Call::Config recv_config(test->GetReceiverCallConfig());
     if (num_audio_streams_ > 0) {
       AudioState::Config audio_state_config;
       audio_state_config.voice_engine = voe_recv_.voice_engine;
       audio_state_config.audio_mixer = AudioMixerImpl::Create();
       recv_config.audio_state = AudioState::Create(audio_state_config);
     }
     CreateReceiverCall(recv_config);
   }
   test->OnCallsCreated(sender_call_.get(), receiver_call_.get());
   receive_transport_.reset(test->CreateReceiveTransport());
   send_transport_.reset(test->CreateSendTransport(sender_call_.get()));

   if (test->ShouldCreateReceivers()) {
     send_transport_->SetReceiver(receiver_call_->Receiver());
     receive_transport_->SetReceiver(sender_call_->Receiver());
     if (num_video_streams_ > 0)
       receiver_call_->SignalChannelNetworkState(MediaType::VIDEO, kNetworkUp);
     if (num_audio_streams_ > 0)
       receiver_call_->SignalChannelNetworkState(MediaType::AUDIO, kNetworkUp);
   } else {
     // Sender-only call delivers to itself.
     send_transport_->SetReceiver(sender_call_->Receiver());
     receive_transport_->SetReceiver(nullptr);
   }

   CreateSendConfig(num_video_streams_, num_audio_streams_, num_flexfec_streams_,
                    send_transport_.get());
   if (test->ShouldCreateReceivers()) {
     CreateMatchingReceiveConfigs(receive_transport_.get());
   }
   if (num_video_streams_ > 0) {
     test->ModifyVideoConfigs(&video_send_config_, &video_receive_configs_,
                              &video_encoder_config_);
   }
   if (num_audio_streams_ > 0) {
     test->ModifyAudioConfigs(&audio_send_config_, &audio_receive_configs_);
   }
   if (num_flexfec_streams_ > 0) {
     test->ModifyFlexfecConfigs(&flexfec_receive_configs_);
   }

   if (num_flexfec_streams_ > 0) {
     CreateFlexfecStreams();
     test->OnFlexfecStreamsCreated(flexfec_receive_streams_);
   }
   if (num_video_streams_ > 0) {
     CreateVideoStreams();
     test->OnVideoStreamsCreated(video_send_stream_, video_receive_streams_);
   }
   if (num_audio_streams_ > 0) {
     CreateAudioStreams();
     test->OnAudioStreamsCreated(audio_send_stream_, audio_receive_streams_);
   }

   if (num_video_streams_ > 0) {
     int width = kDefaultWidth;
     int height = kDefaultHeight;
     int frame_rate = kDefaultFramerate;
     test->ModifyVideoCaptureStartResolution(&width, &height, &frame_rate);
     CreateFrameGeneratorCapturer(frame_rate, width, height);
     test->OnFrameGeneratorCapturerCreated(frame_generator_capturer_.get());
   }

   Start();
   test->PerformTest();
   send_transport_->StopSending();
   receive_transport_->StopSending();
   Stop();

   DestroyStreams();
   DestroyCalls();
   if (num_audio_streams_ > 0)
     DestroyVoiceEngines();
 }

 void CallTest::Start() {
   if (video_send_stream_)
     video_send_stream_->Start();
   for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
     video_recv_stream->Start();
   if (audio_send_stream_) {
     audio_send_stream_->Start();
   }
   for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
     audio_recv_stream->Start();
   for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
     flexfec_recv_stream->Start();
   if (frame_generator_capturer_.get() != NULL)
     frame_generator_capturer_->Start();
 }

 void CallTest::Stop() {
   if (frame_generator_capturer_.get() != NULL)
     frame_generator_capturer_->Stop();
   for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
     flexfec_recv_stream->Stop();
   for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
     audio_recv_stream->Stop();
   if (audio_send_stream_) {
     audio_send_stream_->Stop();
   }
   for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
     video_recv_stream->Stop();
   if (video_send_stream_)
     video_send_stream_->Stop();
 }

 void CallTest::CreateCalls(const Call::Config& sender_config,
                            const Call::Config& receiver_config) {
   CreateSenderCall(sender_config);
   CreateReceiverCall(receiver_config);
 }

 void CallTest::CreateSenderCall(const Call::Config& config) {
   sender_call_.reset(Call::Create(config));
 }

 void CallTest::CreateReceiverCall(const Call::Config& config) {
   receiver_call_.reset(Call::Create(config));
 }

 void CallTest::DestroyCalls() {
   sender_call_.reset();
   receiver_call_.reset();
 }

 void CallTest::CreateSendConfig(size_t num_video_streams,
                                 size_t num_audio_streams,
                                 size_t num_flexfec_streams,
                                 Transport* send_transport) {
   RTC_DCHECK(num_video_streams <= kNumSsrcs);
   RTC_DCHECK_LE(num_audio_streams, 1);
   RTC_DCHECK_LE(num_flexfec_streams, 1);
   RTC_DCHECK(num_audio_streams == 0 || voe_send_.channel_id >= 0);
   if (num_video_streams > 0) {
     video_send_config_ = VideoSendStream::Config(send_transport);
     video_send_config_.encoder_settings.encoder = &fake_encoder_;
     video_send_config_.encoder_settings.payload_name = "FAKE";
     video_send_config_.encoder_settings.payload_type =
         kFakeVideoSendPayloadType;
     video_send_config_.rtp.extensions.push_back(
         RtpExtension(RtpExtension::kAbsSendTimeUri, kAbsSendTimeExtensionId));
     FillEncoderConfiguration(num_video_streams, &video_encoder_config_);

     for (size_t i = 0; i < num_video_streams; ++i)
       video_send_config_.rtp.ssrcs.push_back(kVideoSendSsrcs[i]);
     video_send_config_.rtp.extensions.push_back(RtpExtension(
         RtpExtension::kVideoRotationUri, kVideoRotationRtpExtensionId));
   }

   if (num_audio_streams > 0) {
     audio_send_config_ = AudioSendStream::Config(send_transport);
     audio_send_config_.voe_channel_id = voe_send_.channel_id;
     audio_send_config_.rtp.ssrc = kAudioSendSsrc;
     audio_send_config_.send_codec_spec.codec_inst =
         CodecInst{kAudioSendPayloadType, "ISAC", 16000, 480, 1, 32000};
   }

   // TODO(brandtr): Update this when we support multistream protection.
   if (num_flexfec_streams > 0) {
     video_send_config_.rtp.flexfec.payload_type = kFlexfecPayloadType;
     video_send_config_.rtp.flexfec.ssrc = kFlexfecSendSsrc;
     video_send_config_.rtp.flexfec.protected_media_ssrcs = {kVideoSendSsrcs[0]};
   }
 }

 void CallTest::CreateMatchingReceiveConfigs(Transport* rtcp_send_transport) {
   RTC_DCHECK(video_receive_configs_.empty());
   RTC_DCHECK(allocated_decoders_.empty());
   if (num_video_streams_ > 0) {
     RTC_DCHECK(!video_send_config_.rtp.ssrcs.empty());
     VideoReceiveStream::Config video_config(rtcp_send_transport);
     video_config.rtp.remb = true;
     video_config.rtp.local_ssrc = kReceiverLocalVideoSsrc;
     for (const RtpExtension& extension : video_send_config_.rtp.extensions)
       video_config.rtp.extensions.push_back(extension);
     video_config.renderer = &fake_renderer_;
     for (size_t i = 0; i < video_send_config_.rtp.ssrcs.size(); ++i) {
       VideoReceiveStream::Decoder decoder =
           test::CreateMatchingDecoder(video_send_config_.encoder_settings);
       allocated_decoders_.push_back(
           std::unique_ptr<VideoDecoder>(decoder.decoder));
       video_config.decoders.clear();
       video_config.decoders.push_back(decoder);
       video_config.rtp.remote_ssrc = video_send_config_.rtp.ssrcs[i];
       video_receive_configs_.push_back(video_config.Copy());
     }
   }

   RTC_DCHECK_GE(1, num_audio_streams_);
   if (num_audio_streams_ == 1) {
     RTC_DCHECK_LE(0, voe_send_.channel_id);
     AudioReceiveStream::Config audio_config;
     audio_config.rtp.local_ssrc = kReceiverLocalAudioSsrc;
     audio_config.rtcp_send_transport = rtcp_send_transport;
     audio_config.voe_channel_id = voe_recv_.channel_id;
     audio_config.rtp.remote_ssrc = audio_send_config_.rtp.ssrc;
     audio_config.decoder_factory = decoder_factory_;
     audio_receive_configs_.push_back(audio_config);
   }

   // TODO(brandtr): Update this when we support multistream protection.
   RTC_DCHECK(num_flexfec_streams_ <= 1);
   if (num_flexfec_streams_ == 1) {
     FlexfecReceiveStream::Config config(rtcp_send_transport);
     config.payload_type = kFlexfecPayloadType;
     config.remote_ssrc = kFlexfecSendSsrc;
     config.protected_media_ssrcs = {kVideoSendSsrcs[0]};
     config.local_ssrc = kReceiverLocalVideoSsrc;
     for (const RtpExtension& extension : video_send_config_.rtp.extensions)
       config.rtp_header_extensions.push_back(extension);
     flexfec_receive_configs_.push_back(config);
   }
 }

 void CallTest::CreateFrameGeneratorCapturerWithDrift(Clock* clock,
                                                      float speed,
                                                      int framerate,
                                                      int width,
                                                      int height) {
   frame_generator_capturer_.reset(test::FrameGeneratorCapturer::Create(
       width, height, framerate * speed, clock));
   video_send_stream_->SetSource(
       frame_generator_capturer_.get(),
       VideoSendStream::DegradationPreference::kBalanced);
 }

 void CallTest::CreateFrameGeneratorCapturer(int framerate,
                                             int width,
                                             int height) {
   frame_generator_capturer_.reset(
       test::FrameGeneratorCapturer::Create(width, height, framerate, clock_));
   video_send_stream_->SetSource(
       frame_generator_capturer_.get(),
       VideoSendStream::DegradationPreference::kBalanced);
 }

 void CallTest::CreateFakeAudioDevices() {
   fake_send_audio_device_.reset(new FakeAudioDevice(1.f, 48000, 256));
   fake_recv_audio_device_.reset(new FakeAudioDevice(1.f, 48000, 256));
 }

 void CallTest::CreateVideoStreams() {
   RTC_DCHECK(video_send_stream_ == nullptr);
   RTC_DCHECK(video_receive_streams_.empty());
   RTC_DCHECK(audio_send_stream_ == nullptr);
   RTC_DCHECK(audio_receive_streams_.empty());

   video_send_stream_ = sender_call_->CreateVideoSendStream(
       video_send_config_.Copy(), video_encoder_config_.Copy());
   for (size_t i = 0; i < video_receive_configs_.size(); ++i) {
     video_receive_streams_.push_back(receiver_call_->CreateVideoReceiveStream(
         video_receive_configs_[i].Copy()));
   }
 }

 void CallTest::SetFakeVideoCaptureRotation(VideoRotation rotation) {
   frame_generator_capturer_->SetFakeRotation(rotation);
 }

 void CallTest::CreateAudioStreams() {
   audio_send_stream_ = sender_call_->CreateAudioSendStream(audio_send_config_);
   for (size_t i = 0; i < audio_receive_configs_.size(); ++i) {
     audio_receive_streams_.push_back(
         receiver_call_->CreateAudioReceiveStream(audio_receive_configs_[i]));
   }
 }

 void CallTest::CreateFlexfecStreams() {
   for (size_t i = 0; i < flexfec_receive_configs_.size(); ++i) {
     flexfec_receive_streams_.push_back(
         receiver_call_->CreateFlexfecReceiveStream(
             flexfec_receive_configs_[i]));
   }
 }

 void CallTest::DestroyStreams() {
   if (audio_send_stream_)
     sender_call_->DestroyAudioSendStream(audio_send_stream_);
   audio_send_stream_ = nullptr;
   for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
     receiver_call_->DestroyAudioReceiveStream(audio_recv_stream);

   if (video_send_stream_)
     sender_call_->DestroyVideoSendStream(video_send_stream_);
   video_send_stream_ = nullptr;
   for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
     receiver_call_->DestroyVideoReceiveStream(video_recv_stream);

   for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
     receiver_call_->DestroyFlexfecReceiveStream(flexfec_recv_stream);

   video_receive_streams_.clear();
   allocated_decoders_.clear();
 }

 void CallTest::CreateVoiceEngines() {
   CreateFakeAudioDevices();
   voe_send_.voice_engine = VoiceEngine::Create();
   voe_send_.base = VoEBase::GetInterface(voe_send_.voice_engine);
   EXPECT_EQ(0, voe_send_.base->Init(fake_send_audio_device_.get(), nullptr,
                                     decoder_factory_));
   VoEBase::ChannelConfig config;
   config.enable_voice_pacing = true;
   voe_send_.channel_id = voe_send_.base->CreateChannel(config);
   EXPECT_GE(voe_send_.channel_id, 0);

   voe_recv_.voice_engine = VoiceEngine::Create();
   voe_recv_.base = VoEBase::GetInterface(voe_recv_.voice_engine);
   EXPECT_EQ(0, voe_recv_.base->Init(fake_recv_audio_device_.get(), nullptr,
                                     decoder_factory_));
   voe_recv_.channel_id = voe_recv_.base->CreateChannel();
   EXPECT_GE(voe_recv_.channel_id, 0);
 }

 void CallTest::DestroyVoiceEngines() {
   voe_recv_.base->DeleteChannel(voe_recv_.channel_id);
   voe_recv_.channel_id = -1;
   voe_recv_.base->Release();
   voe_recv_.base = nullptr;

   voe_send_.base->DeleteChannel(voe_send_.channel_id);
   voe_send_.channel_id = -1;
   voe_send_.base->Release();
   voe_send_.base = nullptr;

   VoiceEngine::Delete(voe_send_.voice_engine);
   voe_send_.voice_engine = nullptr;
   VoiceEngine::Delete(voe_recv_.voice_engine);
   voe_recv_.voice_engine = nullptr;
 }

 const int CallTest::kDefaultWidth;
 const int CallTest::kDefaultHeight;
 const int CallTest::kDefaultFramerate;
 const int CallTest::kDefaultTimeoutMs = 30 * 1000;
 const int CallTest::kLongTimeoutMs = 120 * 1000;
 const uint8_t CallTest::kVideoSendPayloadType = 100;
 const uint8_t CallTest::kFakeVideoSendPayloadType = 125;
 const uint8_t CallTest::kSendRtxPayloadType = 98;
 const uint8_t CallTest::kRedPayloadType = 118;
 const uint8_t CallTest::kRtxRedPayloadType = 99;
 const uint8_t CallTest::kUlpfecPayloadType = 119;
 const uint8_t CallTest::kFlexfecPayloadType = 120;
 const uint8_t CallTest::kAudioSendPayloadType = 103;
 const uint32_t CallTest::kSendRtxSsrcs[kNumSsrcs] = {0xBADCAFD, 0xBADCAFE,
                                                      0xBADCAFF};
 const uint32_t CallTest::kVideoSendSsrcs[kNumSsrcs] = {0xC0FFED, 0xC0FFEE,
                                                        0xC0FFEF};
 const uint32_t CallTest::kAudioSendSsrc = 0xDEADBEEF;
 const uint32_t CallTest::kFlexfecSendSsrc = 0xBADBEEF;
 const uint32_t CallTest::kReceiverLocalVideoSsrc = 0x123456;
 const uint32_t CallTest::kReceiverLocalAudioSsrc = 0x1234567;
 const int CallTest::kNackRtpHistoryMs = 1000;

 BaseTest::BaseTest(unsigned int timeout_ms) : RtpRtcpObserver(timeout_ms) {
 }

 BaseTest::~BaseTest() {
 }

 Call::Config BaseTest::GetSenderCallConfig() {
   return Call::Config(&event_log_);
 }

 Call::Config BaseTest::GetReceiverCallConfig() {
   return Call::Config(&event_log_);
 }

 void BaseTest::OnCallsCreated(Call* sender_call, Call* receiver_call) {
 }

 test::PacketTransport* BaseTest::CreateSendTransport(Call* sender_call) {
   return new PacketTransport(sender_call, this, test::PacketTransport::kSender,
                              FakeNetworkPipe::Config());
 }

 test::PacketTransport* BaseTest::CreateReceiveTransport() {
   return new PacketTransport(nullptr, this, test::PacketTransport::kReceiver,
                              FakeNetworkPipe::Config());
 }

 size_t BaseTest::GetNumVideoStreams() const {
   return 1;
 }

 size_t BaseTest::GetNumAudioStreams() const {
   return 0;
 }

 size_t BaseTest::GetNumFlexfecStreams() const {
   return 0;
 }

 void BaseTest::ModifyVideoConfigs(
     VideoSendStream::Config* send_config,
     std::vector<VideoReceiveStream::Config>* receive_configs,
     VideoEncoderConfig* encoder_config) {}

 void BaseTest::ModifyVideoCaptureStartResolution(int* width,
                                                  int* heigt,
                                                  int* frame_rate) {}

 void BaseTest::OnVideoStreamsCreated(
     VideoSendStream* send_stream,
     const std::vector<VideoReceiveStream*>& receive_streams) {}

 void BaseTest::ModifyAudioConfigs(
     AudioSendStream::Config* send_config,
     std::vector<AudioReceiveStream::Config>* receive_configs) {}

 void BaseTest::OnAudioStreamsCreated(
     AudioSendStream* send_stream,
     const std::vector<AudioReceiveStream*>& receive_streams) {}

 void BaseTest::ModifyFlexfecConfigs(
     std::vector<FlexfecReceiveStream::Config>* receive_configs) {}

 void BaseTest::OnFlexfecStreamsCreated(
     const std::vector<FlexfecReceiveStream*>& receive_streams) {}

 void BaseTest::OnFrameGeneratorCapturerCreated(
     FrameGeneratorCapturer* frame_generator_capturer) {
 }

 SendTest::SendTest(unsigned int timeout_ms) : BaseTest(timeout_ms) {
 }

 bool SendTest::ShouldCreateReceivers() const {
   return false;
 }

 EndToEndTest::EndToEndTest(unsigned int timeout_ms) : BaseTest(timeout_ms) {
 }

 bool EndToEndTest::ShouldCreateReceivers() const {
   return true;
 }

 }  // namespace test
 }  // namespace webrtc
	/*
	* Copyright (c) 2014 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 "webrtc/test/call_test.h"

	#include <algorithm>

	#include "webrtc/base/checks.h"
	#include "webrtc/config.h"
	#include "webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.h"
	#include "webrtc/modules/audio_mixer/audio_mixer_impl.h"
	#include "webrtc/test/testsupport/fileutils.h"
	#include "webrtc/voice_engine/include/voe_base.h"

	namespace webrtc {
	namespace test {

	namespace {
	const int kVideoRotationRtpExtensionId = 4;
	}

	CallTest::CallTest()
	: clock_(Clock::GetRealTimeClock()),
	video_send_config_(nullptr),
	video_send_stream_(nullptr),
	audio_send_config_(nullptr),
	audio_send_stream_(nullptr),
	fake_encoder_(clock_),
	num_video_streams_(1),
	num_audio_streams_(0),
	num_flexfec_streams_(0),
	decoder_factory_(CreateBuiltinAudioDecoderFactory()),
	fake_send_audio_device_(nullptr),
	fake_recv_audio_device_(nullptr) {}

	CallTest::~CallTest() {
	}

	void CallTest::RunBaseTest(BaseTest* test) {
	num_video_streams_ = test->GetNumVideoStreams();
	num_audio_streams_ = test->GetNumAudioStreams();
	num_flexfec_streams_ = test->GetNumFlexfecStreams();
	RTC_DCHECK(num_video_streams_ > 0 \|\| num_audio_streams_ > 0);
	Call::Config send_config(test->GetSenderCallConfig());
	if (num_audio_streams_ > 0) {
	CreateVoiceEngines();
	AudioState::Config audio_state_config;
	audio_state_config.voice_engine = voe_send_.voice_engine;
	audio_state_config.audio_mixer = AudioMixerImpl::Create();
	send_config.audio_state = AudioState::Create(audio_state_config);
	}
	CreateSenderCall(send_config);
	if (test->ShouldCreateReceivers()) {
	Call::Config recv_config(test->GetReceiverCallConfig());
	if (num_audio_streams_ > 0) {
	AudioState::Config audio_state_config;
	audio_state_config.voice_engine = voe_recv_.voice_engine;
	audio_state_config.audio_mixer = AudioMixerImpl::Create();
	recv_config.audio_state = AudioState::Create(audio_state_config);
	}
	CreateReceiverCall(recv_config);
	}
	test->OnCallsCreated(sender_call_.get(), receiver_call_.get());
	receive_transport_.reset(test->CreateReceiveTransport());
	send_transport_.reset(test->CreateSendTransport(sender_call_.get()));

	if (test->ShouldCreateReceivers()) {
	send_transport_->SetReceiver(receiver_call_->Receiver());
	receive_transport_->SetReceiver(sender_call_->Receiver());
	if (num_video_streams_ > 0)
	receiver_call_->SignalChannelNetworkState(MediaType::VIDEO, kNetworkUp);
	if (num_audio_streams_ > 0)
	receiver_call_->SignalChannelNetworkState(MediaType::AUDIO, kNetworkUp);
	} else {
	// Sender-only call delivers to itself.
	send_transport_->SetReceiver(sender_call_->Receiver());
	receive_transport_->SetReceiver(nullptr);
	}

	CreateSendConfig(num_video_streams_, num_audio_streams_, num_flexfec_streams_,
	send_transport_.get());
	if (test->ShouldCreateReceivers()) {
	CreateMatchingReceiveConfigs(receive_transport_.get());
	}
	if (num_video_streams_ > 0) {
	test->ModifyVideoConfigs(&video_send_config_, &video_receive_configs_,
	&video_encoder_config_);
	}
	if (num_audio_streams_ > 0) {
	test->ModifyAudioConfigs(&audio_send_config_, &audio_receive_configs_);
	}
	if (num_flexfec_streams_ > 0) {
	test->ModifyFlexfecConfigs(&flexfec_receive_configs_);
	}

	if (num_flexfec_streams_ > 0) {
	CreateFlexfecStreams();
	test->OnFlexfecStreamsCreated(flexfec_receive_streams_);
	}
	if (num_video_streams_ > 0) {
	CreateVideoStreams();
	test->OnVideoStreamsCreated(video_send_stream_, video_receive_streams_);
	}
	if (num_audio_streams_ > 0) {
	CreateAudioStreams();
	test->OnAudioStreamsCreated(audio_send_stream_, audio_receive_streams_);
	}

	if (num_video_streams_ > 0) {
	int width = kDefaultWidth;
	int height = kDefaultHeight;
	int frame_rate = kDefaultFramerate;
	test->ModifyVideoCaptureStartResolution(&width, &height, &frame_rate);
	CreateFrameGeneratorCapturer(frame_rate, width, height);
	test->OnFrameGeneratorCapturerCreated(frame_generator_capturer_.get());
	}

	Start();
	test->PerformTest();
	send_transport_->StopSending();
	receive_transport_->StopSending();
	Stop();

	DestroyStreams();
	DestroyCalls();
	if (num_audio_streams_ > 0)
	DestroyVoiceEngines();
	}

	void CallTest::Start() {
	if (video_send_stream_)
	video_send_stream_->Start();
	for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
	video_recv_stream->Start();
	if (audio_send_stream_) {
	audio_send_stream_->Start();
	}
	for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
	audio_recv_stream->Start();
	for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
	flexfec_recv_stream->Start();
	if (frame_generator_capturer_.get() != NULL)
	frame_generator_capturer_->Start();
	}

	void CallTest::Stop() {
	if (frame_generator_capturer_.get() != NULL)
	frame_generator_capturer_->Stop();
	for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
	flexfec_recv_stream->Stop();
	for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
	audio_recv_stream->Stop();
	if (audio_send_stream_) {
	audio_send_stream_->Stop();
	}
	for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
	video_recv_stream->Stop();
	if (video_send_stream_)
	video_send_stream_->Stop();
	}

	void CallTest::CreateCalls(const Call::Config& sender_config,
	const Call::Config& receiver_config) {
	CreateSenderCall(sender_config);
	CreateReceiverCall(receiver_config);
	}

	void CallTest::CreateSenderCall(const Call::Config& config) {
	sender_call_.reset(Call::Create(config));
	}

	void CallTest::CreateReceiverCall(const Call::Config& config) {
	receiver_call_.reset(Call::Create(config));
	}

	void CallTest::DestroyCalls() {
	sender_call_.reset();
	receiver_call_.reset();
	}

	void CallTest::CreateSendConfig(size_t num_video_streams,
	size_t num_audio_streams,
	size_t num_flexfec_streams,
	Transport* send_transport) {
	RTC_DCHECK(num_video_streams <= kNumSsrcs);
	RTC_DCHECK_LE(num_audio_streams, 1);
	RTC_DCHECK_LE(num_flexfec_streams, 1);
	RTC_DCHECK(num_audio_streams == 0 \|\| voe_send_.channel_id >= 0);
	if (num_video_streams > 0) {
	video_send_config_ = VideoSendStream::Config(send_transport);
	video_send_config_.encoder_settings.encoder = &fake_encoder_;
	video_send_config_.encoder_settings.payload_name = "FAKE";
	video_send_config_.encoder_settings.payload_type =
	kFakeVideoSendPayloadType;
	video_send_config_.rtp.extensions.push_back(
	RtpExtension(RtpExtension::kAbsSendTimeUri, kAbsSendTimeExtensionId));
	FillEncoderConfiguration(num_video_streams, &video_encoder_config_);

	for (size_t i = 0; i < num_video_streams; ++i)
	video_send_config_.rtp.ssrcs.push_back(kVideoSendSsrcs[i]);
	video_send_config_.rtp.extensions.push_back(RtpExtension(
	RtpExtension::kVideoRotationUri, kVideoRotationRtpExtensionId));
	}

	if (num_audio_streams > 0) {
	audio_send_config_ = AudioSendStream::Config(send_transport);
	audio_send_config_.voe_channel_id = voe_send_.channel_id;
	audio_send_config_.rtp.ssrc = kAudioSendSsrc;
	audio_send_config_.send_codec_spec.codec_inst =
	CodecInst{kAudioSendPayloadType, "ISAC", 16000, 480, 1, 32000};
	}

	// TODO(brandtr): Update this when we support multistream protection.
	if (num_flexfec_streams > 0) {
	video_send_config_.rtp.flexfec.payload_type = kFlexfecPayloadType;
	video_send_config_.rtp.flexfec.ssrc = kFlexfecSendSsrc;
	video_send_config_.rtp.flexfec.protected_media_ssrcs = {kVideoSendSsrcs[0]};
	}
	}

	void CallTest::CreateMatchingReceiveConfigs(Transport* rtcp_send_transport) {
	RTC_DCHECK(video_receive_configs_.empty());
	RTC_DCHECK(allocated_decoders_.empty());
	if (num_video_streams_ > 0) {
	RTC_DCHECK(!video_send_config_.rtp.ssrcs.empty());
	VideoReceiveStream::Config video_config(rtcp_send_transport);
	video_config.rtp.remb = true;
	video_config.rtp.local_ssrc = kReceiverLocalVideoSsrc;
	for (const RtpExtension& extension : video_send_config_.rtp.extensions)
	video_config.rtp.extensions.push_back(extension);
	video_config.renderer = &fake_renderer_;
	for (size_t i = 0; i < video_send_config_.rtp.ssrcs.size(); ++i) {
	VideoReceiveStream::Decoder decoder =
	test::CreateMatchingDecoder(video_send_config_.encoder_settings);
	allocated_decoders_.push_back(
	std::unique_ptr<VideoDecoder>(decoder.decoder));
	video_config.decoders.clear();
	video_config.decoders.push_back(decoder);
	video_config.rtp.remote_ssrc = video_send_config_.rtp.ssrcs[i];
	video_receive_configs_.push_back(video_config.Copy());
	}
	}

	RTC_DCHECK_GE(1, num_audio_streams_);
	if (num_audio_streams_ == 1) {
	RTC_DCHECK_LE(0, voe_send_.channel_id);
	AudioReceiveStream::Config audio_config;
	audio_config.rtp.local_ssrc = kReceiverLocalAudioSsrc;
	audio_config.rtcp_send_transport = rtcp_send_transport;
	audio_config.voe_channel_id = voe_recv_.channel_id;
	audio_config.rtp.remote_ssrc = audio_send_config_.rtp.ssrc;
	audio_config.decoder_factory = decoder_factory_;
	audio_receive_configs_.push_back(audio_config);
	}

	// TODO(brandtr): Update this when we support multistream protection.
	RTC_DCHECK(num_flexfec_streams_ <= 1);
	if (num_flexfec_streams_ == 1) {
	FlexfecReceiveStream::Config config(rtcp_send_transport);
	config.payload_type = kFlexfecPayloadType;
	config.remote_ssrc = kFlexfecSendSsrc;
	config.protected_media_ssrcs = {kVideoSendSsrcs[0]};
	config.local_ssrc = kReceiverLocalVideoSsrc;
	for (const RtpExtension& extension : video_send_config_.rtp.extensions)
	config.rtp_header_extensions.push_back(extension);
	flexfec_receive_configs_.push_back(config);
	}
	}

	void CallTest::CreateFrameGeneratorCapturerWithDrift(Clock* clock,
	float speed,
	int framerate,
	int width,
	int height) {
	frame_generator_capturer_.reset(test::FrameGeneratorCapturer::Create(
	width, height, framerate * speed, clock));
	video_send_stream_->SetSource(
	frame_generator_capturer_.get(),
	VideoSendStream::DegradationPreference::kBalanced);
	}

	void CallTest::CreateFrameGeneratorCapturer(int framerate,
	int width,
	int height) {
	frame_generator_capturer_.reset(
	test::FrameGeneratorCapturer::Create(width, height, framerate, clock_));
	video_send_stream_->SetSource(
	frame_generator_capturer_.get(),
	VideoSendStream::DegradationPreference::kBalanced);
	}

	void CallTest::CreateFakeAudioDevices() {
	fake_send_audio_device_.reset(new FakeAudioDevice(1.f, 48000, 256));
	fake_recv_audio_device_.reset(new FakeAudioDevice(1.f, 48000, 256));
	}

	void CallTest::CreateVideoStreams() {
	RTC_DCHECK(video_send_stream_ == nullptr);
	RTC_DCHECK(video_receive_streams_.empty());
	RTC_DCHECK(audio_send_stream_ == nullptr);
	RTC_DCHECK(audio_receive_streams_.empty());

	video_send_stream_ = sender_call_->CreateVideoSendStream(
	video_send_config_.Copy(), video_encoder_config_.Copy());
	for (size_t i = 0; i < video_receive_configs_.size(); ++i) {
	video_receive_streams_.push_back(receiver_call_->CreateVideoReceiveStream(
	video_receive_configs_[i].Copy()));
	}
	}

	void CallTest::SetFakeVideoCaptureRotation(VideoRotation rotation) {
	frame_generator_capturer_->SetFakeRotation(rotation);
	}

	void CallTest::CreateAudioStreams() {
	audio_send_stream_ = sender_call_->CreateAudioSendStream(audio_send_config_);
	for (size_t i = 0; i < audio_receive_configs_.size(); ++i) {
	audio_receive_streams_.push_back(
	receiver_call_->CreateAudioReceiveStream(audio_receive_configs_[i]));
	}
	}

	void CallTest::CreateFlexfecStreams() {
	for (size_t i = 0; i < flexfec_receive_configs_.size(); ++i) {
	flexfec_receive_streams_.push_back(
	receiver_call_->CreateFlexfecReceiveStream(
	flexfec_receive_configs_[i]));
	}
	}

	void CallTest::DestroyStreams() {
	if (audio_send_stream_)
	sender_call_->DestroyAudioSendStream(audio_send_stream_);
	audio_send_stream_ = nullptr;
	for (AudioReceiveStream* audio_recv_stream : audio_receive_streams_)
	receiver_call_->DestroyAudioReceiveStream(audio_recv_stream);

	if (video_send_stream_)
	sender_call_->DestroyVideoSendStream(video_send_stream_);
	video_send_stream_ = nullptr;
	for (VideoReceiveStream* video_recv_stream : video_receive_streams_)
	receiver_call_->DestroyVideoReceiveStream(video_recv_stream);

	for (FlexfecReceiveStream* flexfec_recv_stream : flexfec_receive_streams_)
	receiver_call_->DestroyFlexfecReceiveStream(flexfec_recv_stream);

	video_receive_streams_.clear();
	allocated_decoders_.clear();
	}

	void CallTest::CreateVoiceEngines() {
	CreateFakeAudioDevices();
	voe_send_.voice_engine = VoiceEngine::Create();
	voe_send_.base = VoEBase::GetInterface(voe_send_.voice_engine);
	EXPECT_EQ(0, voe_send_.base->Init(fake_send_audio_device_.get(), nullptr,
	decoder_factory_));
	VoEBase::ChannelConfig config;
	config.enable_voice_pacing = true;
	voe_send_.channel_id = voe_send_.base->CreateChannel(config);
	EXPECT_GE(voe_send_.channel_id, 0);

	voe_recv_.voice_engine = VoiceEngine::Create();
	voe_recv_.base = VoEBase::GetInterface(voe_recv_.voice_engine);
	EXPECT_EQ(0, voe_recv_.base->Init(fake_recv_audio_device_.get(), nullptr,
	decoder_factory_));
	voe_recv_.channel_id = voe_recv_.base->CreateChannel();
	EXPECT_GE(voe_recv_.channel_id, 0);
	}

	void CallTest::DestroyVoiceEngines() {
	voe_recv_.base->DeleteChannel(voe_recv_.channel_id);
	voe_recv_.channel_id = -1;
	voe_recv_.base->Release();
	voe_recv_.base = nullptr;

	voe_send_.base->DeleteChannel(voe_send_.channel_id);
	voe_send_.channel_id = -1;
	voe_send_.base->Release();
	voe_send_.base = nullptr;

	VoiceEngine::Delete(voe_send_.voice_engine);
	voe_send_.voice_engine = nullptr;
	VoiceEngine::Delete(voe_recv_.voice_engine);
	voe_recv_.voice_engine = nullptr;
	}

	const int CallTest::kDefaultWidth;
	const int CallTest::kDefaultHeight;
	const int CallTest::kDefaultFramerate;
	const int CallTest::kDefaultTimeoutMs = 30 * 1000;
	const int CallTest::kLongTimeoutMs = 120 * 1000;
	const uint8_t CallTest::kVideoSendPayloadType = 100;
	const uint8_t CallTest::kFakeVideoSendPayloadType = 125;
	const uint8_t CallTest::kSendRtxPayloadType = 98;
	const uint8_t CallTest::kRedPayloadType = 118;
	const uint8_t CallTest::kRtxRedPayloadType = 99;
	const uint8_t CallTest::kUlpfecPayloadType = 119;
	const uint8_t CallTest::kFlexfecPayloadType = 120;
	const uint8_t CallTest::kAudioSendPayloadType = 103;
	const uint32_t CallTest::kSendRtxSsrcs[kNumSsrcs] = {0xBADCAFD, 0xBADCAFE,
	0xBADCAFF};
	const uint32_t CallTest::kVideoSendSsrcs[kNumSsrcs] = {0xC0FFED, 0xC0FFEE,
	0xC0FFEF};
	const uint32_t CallTest::kAudioSendSsrc = 0xDEADBEEF;
	const uint32_t CallTest::kFlexfecSendSsrc = 0xBADBEEF;
	const uint32_t CallTest::kReceiverLocalVideoSsrc = 0x123456;
	const uint32_t CallTest::kReceiverLocalAudioSsrc = 0x1234567;
	const int CallTest::kNackRtpHistoryMs = 1000;

	BaseTest::BaseTest(unsigned int timeout_ms) : RtpRtcpObserver(timeout_ms) {
	}

	BaseTest::~BaseTest() {
	}

	Call::Config BaseTest::GetSenderCallConfig() {
	return Call::Config(&event_log_);
	}

	Call::Config BaseTest::GetReceiverCallConfig() {
	return Call::Config(&event_log_);
	}

	void BaseTest::OnCallsCreated(Call* sender_call, Call* receiver_call) {
	}

	test::PacketTransport* BaseTest::CreateSendTransport(Call* sender_call) {
	return new PacketTransport(sender_call, this, test::PacketTransport::kSender,
	FakeNetworkPipe::Config());
	}

	test::PacketTransport* BaseTest::CreateReceiveTransport() {
	return new PacketTransport(nullptr, this, test::PacketTransport::kReceiver,
	FakeNetworkPipe::Config());
	}

	size_t BaseTest::GetNumVideoStreams() const {
	return 1;
	}

	size_t BaseTest::GetNumAudioStreams() const {
	return 0;
	}

	size_t BaseTest::GetNumFlexfecStreams() const {
	return 0;
	}

	void BaseTest::ModifyVideoConfigs(
	VideoSendStream::Config* send_config,
	std::vector<VideoReceiveStream::Config>* receive_configs,
	VideoEncoderConfig* encoder_config) {}

	void BaseTest::ModifyVideoCaptureStartResolution(int* width,
	int* heigt,
	int* frame_rate) {}

	void BaseTest::OnVideoStreamsCreated(
	VideoSendStream* send_stream,
	const std::vector<VideoReceiveStream*>& receive_streams) {}

	void BaseTest::ModifyAudioConfigs(
	AudioSendStream::Config* send_config,
	std::vector<AudioReceiveStream::Config>* receive_configs) {}

	void BaseTest::OnAudioStreamsCreated(
	AudioSendStream* send_stream,
	const std::vector<AudioReceiveStream*>& receive_streams) {}

	void BaseTest::ModifyFlexfecConfigs(
	std::vector<FlexfecReceiveStream::Config>* receive_configs) {}

	void BaseTest::OnFlexfecStreamsCreated(
	const std::vector<FlexfecReceiveStream*>& receive_streams) {}

	void BaseTest::OnFrameGeneratorCapturerCreated(
	FrameGeneratorCapturer* frame_generator_capturer) {
	}

	SendTest::SendTest(unsigned int timeout_ms) : BaseTest(timeout_ms) {
	}

	bool SendTest::ShouldCreateReceivers() const {
	return false;
	}

	EndToEndTest::EndToEndTest(unsigned int timeout_ms) : BaseTest(timeout_ms) {
	}

	bool EndToEndTest::ShouldCreateReceivers() const {
	return true;
	}

	} // namespace test
	} // namespace webrtc