Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 647 insertions, 0 deletions

diff --git a/third_party/libwebrtc/test/scenario/video_stream.cc b/third_party/libwebrtc/test/scenario/video_stream.cc
new file mode 100644
index 0000000000..38e42c88e0
--- /dev/null
+++ b/third_party/libwebrtc/test/scenario/video_stream.cc
@@ -0,0 +1,647 @@
+/*
+ *  Copyright 2018 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 "test/scenario/video_stream.h"
+
+#include <algorithm>
+#include <memory>
+#include <utility>
+
+#include "absl/strings/match.h"
+#include "api/test/create_frame_generator.h"
+#include "api/test/frame_generator_interface.h"
+#include "api/test/video/function_video_encoder_factory.h"
+#include "api/video/builtin_video_bitrate_allocator_factory.h"
+#include "media/base/media_constants.h"
+#include "media/engine/internal_decoder_factory.h"
+#include "media/engine/internal_encoder_factory.h"
+#include "media/engine/webrtc_video_engine.h"
+#include "modules/video_coding/svc/scalability_mode_util.h"
+#include "test/call_test.h"
+#include "test/fake_encoder.h"
+#include "test/scenario/hardware_codecs.h"
+#include "test/testsupport/file_utils.h"
+#include "test/video_test_constants.h"
+#include "video/config/encoder_stream_factory.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+enum : int {  // The first valid value is 1.
+  kTransportSequenceNumberExtensionId = 1,
+  kAbsSendTimeExtensionId,
+  kVideoContentTypeExtensionId,
+  kVideoRotationRtpExtensionId,
+};
+
+uint8_t CodecTypeToPayloadType(VideoCodecType codec_type) {
+  switch (codec_type) {
+    case VideoCodecType::kVideoCodecGeneric:
+      return VideoTestConstants::kFakeVideoSendPayloadType;
+    case VideoCodecType::kVideoCodecVP8:
+      return VideoTestConstants::kPayloadTypeVP8;
+    case VideoCodecType::kVideoCodecVP9:
+      return VideoTestConstants::kPayloadTypeVP9;
+    case VideoCodecType::kVideoCodecH264:
+      return VideoTestConstants::kPayloadTypeH264;
+    case VideoCodecType::kVideoCodecH265:
+      return VideoTestConstants::kPayloadTypeH265;
+    default:
+      RTC_DCHECK_NOTREACHED();
+  }
+  return {};
+}
+std::string CodecTypeToCodecName(VideoCodecType codec_type) {
+  switch (codec_type) {
+    case VideoCodecType::kVideoCodecGeneric:
+      return "";
+    case VideoCodecType::kVideoCodecVP8:
+      return cricket::kVp8CodecName;
+    case VideoCodecType::kVideoCodecVP9:
+      return cricket::kVp9CodecName;
+    case VideoCodecType::kVideoCodecH264:
+      return cricket::kH264CodecName;
+    case VideoCodecType::kVideoCodecH265:
+      return cricket::kH265CodecName;
+    default:
+      RTC_DCHECK_NOTREACHED();
+  }
+  return {};
+}
+VideoEncoderConfig::ContentType ConvertContentType(
+    VideoStreamConfig::Encoder::ContentType content_type) {
+  switch (content_type) {
+    case VideoStreamConfig::Encoder::ContentType::kVideo:
+      return VideoEncoderConfig::ContentType::kRealtimeVideo;
+    case VideoStreamConfig::Encoder::ContentType::kScreen:
+      return VideoEncoderConfig::ContentType::kScreen;
+  }
+}
+
+std::string TransformFilePath(std::string path) {
+  static const std::string resource_prefix = "res://";
+  int ext_pos = path.rfind('.');
+  if (ext_pos < 0) {
+    return test::ResourcePath(path, "yuv");
+  } else if (absl::StartsWith(path, resource_prefix)) {
+    std::string name = path.substr(resource_prefix.length(), ext_pos);
+    std::string ext = path.substr(ext_pos, path.size());
+    return test::ResourcePath(name, ext);
+  }
+  return path;
+}
+
+VideoSendStream::Config CreateVideoSendStreamConfig(
+    VideoStreamConfig config,
+    std::vector<uint32_t> ssrcs,
+    std::vector<uint32_t> rtx_ssrcs,
+    Transport* send_transport) {
+  VideoSendStream::Config send_config(send_transport);
+  send_config.rtp.payload_name = CodecTypeToPayloadString(config.encoder.codec);
+  send_config.rtp.payload_type = CodecTypeToPayloadType(config.encoder.codec);
+  send_config.rtp.nack.rtp_history_ms =
+      config.stream.nack_history_time.ms<int>();
+
+  send_config.rtp.ssrcs = ssrcs;
+  send_config.rtp.extensions = GetVideoRtpExtensions(config);
+
+  if (config.stream.use_rtx) {
+    send_config.rtp.rtx.payload_type = VideoTestConstants::kSendRtxPayloadType;
+    send_config.rtp.rtx.ssrcs = rtx_ssrcs;
+  }
+  if (config.stream.use_flexfec) {
+    send_config.rtp.flexfec.payload_type =
+        VideoTestConstants::kFlexfecPayloadType;
+    send_config.rtp.flexfec.ssrc = VideoTestConstants::kFlexfecSendSsrc;
+    send_config.rtp.flexfec.protected_media_ssrcs = ssrcs;
+  }
+  if (config.stream.use_ulpfec) {
+    send_config.rtp.ulpfec.red_payload_type =
+        VideoTestConstants::kRedPayloadType;
+    send_config.rtp.ulpfec.ulpfec_payload_type =
+        VideoTestConstants::kUlpfecPayloadType;
+    send_config.rtp.ulpfec.red_rtx_payload_type =
+        VideoTestConstants::kRtxRedPayloadType;
+  }
+  return send_config;
+}
+rtc::scoped_refptr<VideoEncoderConfig::EncoderSpecificSettings>
+CreateVp9SpecificSettings(VideoStreamConfig video_config) {
+  constexpr auto kScreen = VideoStreamConfig::Encoder::ContentType::kScreen;
+  VideoStreamConfig::Encoder conf = video_config.encoder;
+  VideoCodecVP9 vp9 = VideoEncoder::GetDefaultVp9Settings();
+  // TODO(bugs.webrtc.org/11607): Support separate scalability mode per
+  // simulcast stream.
+  ScalabilityMode scalability_mode = conf.simulcast_streams[0];
+  vp9.keyFrameInterval = conf.key_frame_interval.value_or(0);
+  vp9.numberOfTemporalLayers =
+      ScalabilityModeToNumTemporalLayers(scalability_mode);
+  vp9.numberOfSpatialLayers =
+      ScalabilityModeToNumSpatialLayers(scalability_mode);
+  vp9.interLayerPred = ScalabilityModeToInterLayerPredMode(scalability_mode);
+
+  if (conf.content_type == kScreen &&
+      (video_config.source.framerate > 5 || vp9.numberOfSpatialLayers >= 3)) {
+    vp9.flexibleMode = true;
+  }
+
+  if (conf.content_type == kScreen || vp9.numberOfTemporalLayers > 1 ||
+      vp9.numberOfSpatialLayers > 1) {
+    vp9.automaticResizeOn = false;
+    vp9.denoisingOn = false;
+  } else {
+    vp9.automaticResizeOn = conf.single.automatic_scaling;
+    vp9.denoisingOn = conf.single.denoising;
+  }
+  return rtc::make_ref_counted<VideoEncoderConfig::Vp9EncoderSpecificSettings>(
+      vp9);
+}
+
+rtc::scoped_refptr<VideoEncoderConfig::EncoderSpecificSettings>
+CreateVp8SpecificSettings(VideoStreamConfig config) {
+  VideoCodecVP8 vp8_settings = VideoEncoder::GetDefaultVp8Settings();
+  vp8_settings.keyFrameInterval = config.encoder.key_frame_interval.value_or(0);
+  // TODO(bugs.webrtc.org/11607): Support separate scalability mode per
+  // simulcast stream.
+  ScalabilityMode scalability_mode = config.encoder.simulcast_streams[0];
+  vp8_settings.numberOfTemporalLayers =
+      ScalabilityModeToNumTemporalLayers(scalability_mode);
+  if (vp8_settings.numberOfTemporalLayers > 1 ||
+      config.encoder.simulcast_streams.size() > 1) {
+    vp8_settings.automaticResizeOn = false;
+    vp8_settings.denoisingOn = false;
+  } else {
+    vp8_settings.automaticResizeOn = config.encoder.single.automatic_scaling;
+    vp8_settings.denoisingOn = config.encoder.single.denoising;
+  }
+  return rtc::make_ref_counted<VideoEncoderConfig::Vp8EncoderSpecificSettings>(
+      vp8_settings);
+}
+
+rtc::scoped_refptr<VideoEncoderConfig::EncoderSpecificSettings>
+CreateH264SpecificSettings(VideoStreamConfig config) {
+  RTC_DCHECK_EQ(config.encoder.simulcast_streams.size(), 1);
+  RTC_DCHECK(config.encoder.simulcast_streams[0] == ScalabilityMode::kL1T1);
+  // TODO(bugs.webrtc.org/6883): Set a key frame interval as a setting that
+  // isn't codec specific.
+  RTC_CHECK_EQ(0, config.encoder.key_frame_interval.value_or(0));
+  return nullptr;
+}
+
+rtc::scoped_refptr<VideoEncoderConfig::EncoderSpecificSettings>
+CreateEncoderSpecificSettings(VideoStreamConfig config) {
+  using Codec = VideoStreamConfig::Encoder::Codec;
+  switch (config.encoder.codec) {
+    case Codec::kVideoCodecH264:
+      return CreateH264SpecificSettings(config);
+    case Codec::kVideoCodecVP8:
+      return CreateVp8SpecificSettings(config);
+    case Codec::kVideoCodecVP9:
+      return CreateVp9SpecificSettings(config);
+    case Codec::kVideoCodecGeneric:
+    case Codec::kVideoCodecAV1:
+    case Codec::kVideoCodecH265:
+      return nullptr;
+    case Codec::kVideoCodecMultiplex:
+      RTC_DCHECK_NOTREACHED();
+      return nullptr;
+  }
+}
+
+VideoEncoderConfig CreateVideoEncoderConfig(VideoStreamConfig config) {
+  webrtc::VideoEncoder::EncoderInfo encoder_info;
+  VideoEncoderConfig encoder_config;
+  encoder_config.codec_type = config.encoder.codec;
+  encoder_config.content_type = ConvertContentType(config.encoder.content_type);
+  encoder_config.video_format =
+      SdpVideoFormat(CodecTypeToPayloadString(config.encoder.codec), {});
+
+  encoder_config.number_of_streams = config.encoder.simulcast_streams.size();
+  encoder_config.simulcast_layers =
+      std::vector<VideoStream>(encoder_config.number_of_streams);
+  encoder_config.min_transmit_bitrate_bps = config.stream.pad_to_rate.bps();
+
+  std::string cricket_codec = CodecTypeToCodecName(config.encoder.codec);
+  if (!cricket_codec.empty()) {
+    bool screenshare = config.encoder.content_type ==
+                       VideoStreamConfig::Encoder::ContentType::kScreen;
+    encoder_config.video_stream_factory =
+        rtc::make_ref_counted<cricket::EncoderStreamFactory>(
+            cricket_codec, cricket::kDefaultVideoMaxQpVpx, screenshare,
+            screenshare, encoder_info);
+  } else {
+    encoder_config.video_stream_factory =
+        rtc::make_ref_counted<DefaultVideoStreamFactory>();
+  }
+
+  // TODO(srte): Base this on encoder capabilities.
+  encoder_config.max_bitrate_bps =
+      config.encoder.max_data_rate.value_or(DataRate::KilobitsPerSec(10000))
+          .bps();
+
+  encoder_config.frame_drop_enabled = config.encoder.frame_dropping;
+  encoder_config.encoder_specific_settings =
+      CreateEncoderSpecificSettings(config);
+
+  for (size_t i = 0; i < encoder_config.number_of_streams; ++i) {
+    auto& layer = encoder_config.simulcast_layers[i];
+    if (config.encoder.max_framerate) {
+      layer.max_framerate = *config.encoder.max_framerate;
+      layer.min_bitrate_bps = config.encoder.min_data_rate->bps_or(-1);
+    }
+    layer.scalability_mode = config.encoder.simulcast_streams[i];
+  }
+
+  return encoder_config;
+}
+
+std::unique_ptr<FrameGeneratorInterface> CreateImageSlideGenerator(
+    Clock* clock,
+    VideoStreamConfig::Source::Slides slides,
+    int framerate) {
+  std::vector<std::string> paths = slides.images.paths;
+  for (std::string& path : paths)
+    path = TransformFilePath(path);
+  if (slides.images.crop.width || slides.images.crop.height) {
+    TimeDelta pause_duration =
+        slides.change_interval - slides.images.crop.scroll_duration;
+    RTC_CHECK_GE(pause_duration, TimeDelta::Zero());
+    int crop_width = slides.images.crop.width.value_or(slides.images.width);
+    int crop_height = slides.images.crop.height.value_or(slides.images.height);
+    RTC_CHECK_LE(crop_width, slides.images.width);
+    RTC_CHECK_LE(crop_height, slides.images.height);
+    return CreateScrollingInputFromYuvFilesFrameGenerator(
+        clock, paths, slides.images.width, slides.images.height, crop_width,
+        crop_height, slides.images.crop.scroll_duration.ms(),
+        pause_duration.ms());
+  } else {
+    return CreateFromYuvFileFrameGenerator(
+        paths, slides.images.width, slides.images.height,
+        slides.change_interval.seconds<double>() * framerate);
+  }
+}
+
+std::unique_ptr<FrameGeneratorInterface> CreateFrameGenerator(
+    Clock* clock,
+    VideoStreamConfig::Source source) {
+  using Capture = VideoStreamConfig::Source::Capture;
+  switch (source.capture) {
+    case Capture::kGenerator:
+      return CreateSquareFrameGenerator(
+          source.generator.width, source.generator.height,
+          source.generator.pixel_format, /*num_squares*/ absl::nullopt);
+    case Capture::kVideoFile:
+      RTC_CHECK(source.video_file.width && source.video_file.height);
+      return CreateFromYuvFileFrameGenerator(
+          {TransformFilePath(source.video_file.name)}, source.video_file.width,
+          source.video_file.height, /*frame_repeat_count*/ 1);
+    case Capture::kGenerateSlides:
+      return CreateSlideFrameGenerator(
+          source.slides.generator.width, source.slides.generator.height,
+          source.slides.change_interval.seconds<double>() * source.framerate);
+    case Capture::kImageSlides:
+      return CreateImageSlideGenerator(clock, source.slides, source.framerate);
+  }
+}
+
+VideoReceiveStreamInterface::Config CreateVideoReceiveStreamConfig(
+    VideoStreamConfig config,
+    Transport* feedback_transport,
+    VideoDecoderFactory* decoder_factory,
+    VideoReceiveStreamInterface::Decoder decoder,
+    rtc::VideoSinkInterface<VideoFrame>* renderer,
+    uint32_t local_ssrc,
+    uint32_t ssrc,
+    uint32_t rtx_ssrc) {
+  VideoReceiveStreamInterface::Config recv(feedback_transport);
+  recv.rtp.local_ssrc = local_ssrc;
+
+  RTC_DCHECK(!config.stream.use_rtx ||
+             config.stream.nack_history_time > TimeDelta::Zero());
+  recv.rtp.nack.rtp_history_ms = config.stream.nack_history_time.ms();
+  recv.rtp.protected_by_flexfec = config.stream.use_flexfec;
+  recv.rtp.remote_ssrc = ssrc;
+  recv.decoder_factory = decoder_factory;
+  recv.decoders.push_back(decoder);
+  recv.renderer = renderer;
+  if (config.stream.use_rtx) {
+    recv.rtp.rtx_ssrc = rtx_ssrc;
+    recv.rtp
+        .rtx_associated_payload_types[VideoTestConstants::kSendRtxPayloadType] =
+        CodecTypeToPayloadType(config.encoder.codec);
+  }
+  if (config.stream.use_ulpfec) {
+    recv.rtp.red_payload_type = VideoTestConstants::kRedPayloadType;
+    recv.rtp.ulpfec_payload_type = VideoTestConstants::kUlpfecPayloadType;
+    recv.rtp
+        .rtx_associated_payload_types[VideoTestConstants::kRtxRedPayloadType] =
+        VideoTestConstants::kRedPayloadType;
+  }
+  recv.sync_group = config.render.sync_group;
+  return recv;
+}
+}  // namespace
+
+std::vector<RtpExtension> GetVideoRtpExtensions(
+    const VideoStreamConfig config) {
+  std::vector<RtpExtension> res = {
+      RtpExtension(RtpExtension::kVideoContentTypeUri,
+                   kVideoContentTypeExtensionId),
+      RtpExtension(RtpExtension::kVideoRotationUri,
+                   kVideoRotationRtpExtensionId)};
+  if (config.stream.packet_feedback) {
+    res.push_back(RtpExtension(RtpExtension::kTransportSequenceNumberUri,
+                               kTransportSequenceNumberExtensionId));
+  }
+  if (config.stream.abs_send_time) {
+    res.push_back(
+        RtpExtension(RtpExtension::kAbsSendTimeUri, kAbsSendTimeExtensionId));
+  }
+  return res;
+}
+
+SendVideoStream::SendVideoStream(CallClient* sender,
+                                 VideoStreamConfig config,
+                                 Transport* send_transport,
+                                 VideoFrameMatcher* matcher)
+    : sender_(sender), config_(config) {
+  video_capturer_ = std::make_unique<FrameGeneratorCapturer>(
+      sender_->clock_, CreateFrameGenerator(sender_->clock_, config.source),
+      config.source.framerate,
+      *sender->time_controller_->GetTaskQueueFactory());
+  video_capturer_->Init();
+
+  using Encoder = VideoStreamConfig::Encoder;
+  using Codec = VideoStreamConfig::Encoder::Codec;
+  switch (config.encoder.implementation) {
+    case Encoder::Implementation::kFake:
+      encoder_factory_ =
+          std::make_unique<FunctionVideoEncoderFactory>([this]() {
+            MutexLock lock(&mutex_);
+            std::unique_ptr<FakeEncoder> encoder;
+            if (config_.encoder.codec == Codec::kVideoCodecVP8) {
+              encoder = std::make_unique<test::FakeVp8Encoder>(sender_->clock_);
+            } else if (config_.encoder.codec == Codec::kVideoCodecGeneric) {
+              encoder = std::make_unique<test::FakeEncoder>(sender_->clock_);
+            } else {
+              RTC_DCHECK_NOTREACHED();
+            }
+            fake_encoders_.push_back(encoder.get());
+            if (config_.encoder.fake.max_rate.IsFinite())
+              encoder->SetMaxBitrate(config_.encoder.fake.max_rate.kbps());
+            return encoder;
+          });
+      break;
+    case VideoStreamConfig::Encoder::Implementation::kSoftware:
+      encoder_factory_.reset(new InternalEncoderFactory());
+      break;
+    case VideoStreamConfig::Encoder::Implementation::kHardware:
+      encoder_factory_ = CreateHardwareEncoderFactory();
+      break;
+  }
+  RTC_CHECK(encoder_factory_);
+
+  bitrate_allocator_factory_ = CreateBuiltinVideoBitrateAllocatorFactory();
+  RTC_CHECK(bitrate_allocator_factory_);
+
+  VideoEncoderConfig encoder_config = CreateVideoEncoderConfig(config);
+  for (size_t i = 0; i < encoder_config.number_of_streams; ++i) {
+    ssrcs_.push_back(sender->GetNextVideoSsrc());
+    rtx_ssrcs_.push_back(sender->GetNextRtxSsrc());
+  }
+  VideoSendStream::Config send_config =
+      CreateVideoSendStreamConfig(config, ssrcs_, rtx_ssrcs_, send_transport);
+  send_config.encoder_settings.encoder_factory = encoder_factory_.get();
+  send_config.encoder_settings.bitrate_allocator_factory =
+      bitrate_allocator_factory_.get();
+  send_config.suspend_below_min_bitrate =
+      config.encoder.suspend_below_min_bitrate;
+
+  video_capturer_->Start();
+  sender_->SendTask([&] {
+    if (config.stream.fec_controller_factory) {
+      send_stream_ = sender_->call_->CreateVideoSendStream(
+          std::move(send_config), std::move(encoder_config),
+          config.stream.fec_controller_factory->CreateFecController());
+    } else {
+      send_stream_ = sender_->call_->CreateVideoSendStream(
+          std::move(send_config), std::move(encoder_config));
+    }
+
+    if (matcher->Active()) {
+      frame_tap_ = std::make_unique<ForwardingCapturedFrameTap>(
+          sender_->clock_, matcher, video_capturer_.get());
+      send_stream_->SetSource(frame_tap_.get(),
+                              config.encoder.degradation_preference);
+    } else {
+      send_stream_->SetSource(video_capturer_.get(),
+                              config.encoder.degradation_preference);
+    }
+  });
+}
+
+SendVideoStream::~SendVideoStream() {
+  sender_->SendTask(
+      [this] { sender_->call_->DestroyVideoSendStream(send_stream_); });
+}
+
+void SendVideoStream::Start() {
+  sender_->SendTask([this] {
+    send_stream_->Start();
+    sender_->call_->SignalChannelNetworkState(MediaType::VIDEO, kNetworkUp);
+  });
+}
+
+void SendVideoStream::Stop() {
+  sender_->SendTask([this] { send_stream_->Stop(); });
+}
+
+void SendVideoStream::UpdateConfig(
+    std::function<void(VideoStreamConfig*)> modifier) {
+  sender_->SendTask([&] {
+    MutexLock lock(&mutex_);
+    VideoStreamConfig prior_config = config_;
+    modifier(&config_);
+    if (prior_config.encoder.fake.max_rate != config_.encoder.fake.max_rate) {
+      for (auto* encoder : fake_encoders_) {
+        encoder->SetMaxBitrate(config_.encoder.fake.max_rate.kbps());
+      }
+    }
+    // TODO(srte): Add more conditions that should cause reconfiguration.
+    if (prior_config.encoder.max_framerate != config_.encoder.max_framerate ||
+        prior_config.encoder.max_data_rate != config_.encoder.max_data_rate) {
+      VideoEncoderConfig encoder_config = CreateVideoEncoderConfig(config_);
+      send_stream_->ReconfigureVideoEncoder(std::move(encoder_config));
+    }
+    if (prior_config.source.framerate != config_.source.framerate) {
+      SetCaptureFramerate(config_.source.framerate);
+    }
+  });
+}
+
+void SendVideoStream::UpdateActiveLayers(std::vector<bool> active_layers) {
+  sender_->task_queue_.PostTask([=] {
+    MutexLock lock(&mutex_);
+    if (config_.encoder.codec ==
+        VideoStreamConfig::Encoder::Codec::kVideoCodecVP8) {
+      send_stream_->StartPerRtpStream(active_layers);
+    }
+    VideoEncoderConfig encoder_config = CreateVideoEncoderConfig(config_);
+    RTC_CHECK_EQ(encoder_config.simulcast_layers.size(), active_layers.size());
+    for (size_t i = 0; i < encoder_config.simulcast_layers.size(); ++i)
+      encoder_config.simulcast_layers[i].active = active_layers[i];
+    send_stream_->ReconfigureVideoEncoder(std::move(encoder_config));
+  });
+}
+
+bool SendVideoStream::UsingSsrc(uint32_t ssrc) const {
+  for (uint32_t owned : ssrcs_) {
+    if (owned == ssrc)
+      return true;
+  }
+  return false;
+}
+
+bool SendVideoStream::UsingRtxSsrc(uint32_t ssrc) const {
+  for (uint32_t owned : rtx_ssrcs_) {
+    if (owned == ssrc)
+      return true;
+  }
+  return false;
+}
+
+void SendVideoStream::SetCaptureFramerate(int framerate) {
+  sender_->SendTask([&] { video_capturer_->ChangeFramerate(framerate); });
+}
+
+VideoSendStream::Stats SendVideoStream::GetStats() const {
+  return send_stream_->GetStats();
+}
+
+ColumnPrinter SendVideoStream::StatsPrinter() {
+  return ColumnPrinter::Lambda(
+      "video_target_rate video_sent_rate width height",
+      [this](rtc::SimpleStringBuilder& sb) {
+        VideoSendStream::Stats video_stats = send_stream_->GetStats();
+        int width = 0;
+        int height = 0;
+        for (const auto& stream_stat : video_stats.substreams) {
+          width = std::max(width, stream_stat.second.width);
+          height = std::max(height, stream_stat.second.height);
+        }
+        sb.AppendFormat("%.0lf %.0lf %i %i",
+                        video_stats.target_media_bitrate_bps / 8.0,
+                        video_stats.media_bitrate_bps / 8.0, width, height);
+      },
+      64);
+}
+
+ReceiveVideoStream::ReceiveVideoStream(CallClient* receiver,
+                                       VideoStreamConfig config,
+                                       SendVideoStream* send_stream,
+                                       size_t chosen_stream,
+                                       Transport* feedback_transport,
+                                       VideoFrameMatcher* matcher)
+    : receiver_(receiver), config_(config) {
+  if (config.encoder.codec ==
+          VideoStreamConfig::Encoder::Codec::kVideoCodecGeneric ||
+      config.encoder.implementation == VideoStreamConfig::Encoder::kFake) {
+    decoder_factory_ = std::make_unique<FunctionVideoDecoderFactory>(
+        []() { return std::make_unique<FakeDecoder>(); });
+  } else {
+    decoder_factory_ = std::make_unique<InternalDecoderFactory>();
+  }
+
+  VideoReceiveStreamInterface::Decoder decoder =
+      CreateMatchingDecoder(CodecTypeToPayloadType(config.encoder.codec),
+                            CodecTypeToPayloadString(config.encoder.codec));
+  size_t num_streams = config.encoder.simulcast_streams.size();
+  for (size_t i = 0; i < num_streams; ++i) {
+    rtc::VideoSinkInterface<VideoFrame>* renderer = &fake_renderer_;
+    if (matcher->Active()) {
+      render_taps_.emplace_back(
+          std::make_unique<DecodedFrameTap>(receiver_->clock_, matcher, i));
+      renderer = render_taps_.back().get();
+    }
+    auto recv_config = CreateVideoReceiveStreamConfig(
+        config, feedback_transport, decoder_factory_.get(), decoder, renderer,
+        receiver_->GetNextVideoLocalSsrc(), send_stream->ssrcs_[i],
+        send_stream->rtx_ssrcs_[i]);
+    if (config.stream.use_flexfec) {
+      RTC_DCHECK(num_streams == 1);
+      FlexfecReceiveStream::Config flexfec(feedback_transport);
+      flexfec.payload_type = VideoTestConstants::kFlexfecPayloadType;
+      flexfec.rtp.remote_ssrc = VideoTestConstants::kFlexfecSendSsrc;
+      flexfec.protected_media_ssrcs = send_stream->rtx_ssrcs_;
+      flexfec.rtp.local_ssrc = recv_config.rtp.local_ssrc;
+      receiver_->ssrc_media_types_[flexfec.rtp.remote_ssrc] = MediaType::VIDEO;
+
+      receiver_->SendTask([this, &flexfec] {
+        flecfec_stream_ = receiver_->call_->CreateFlexfecReceiveStream(flexfec);
+      });
+    }
+    receiver_->ssrc_media_types_[recv_config.rtp.remote_ssrc] =
+        MediaType::VIDEO;
+    if (config.stream.use_rtx)
+      receiver_->ssrc_media_types_[recv_config.rtp.rtx_ssrc] = MediaType::VIDEO;
+    receiver_->SendTask([this, &recv_config] {
+      receive_streams_.push_back(
+          receiver_->call_->CreateVideoReceiveStream(std::move(recv_config)));
+    });
+  }
+}
+
+ReceiveVideoStream::~ReceiveVideoStream() {
+  receiver_->SendTask([this] {
+    for (auto* recv_stream : receive_streams_)
+      receiver_->call_->DestroyVideoReceiveStream(recv_stream);
+    if (flecfec_stream_)
+      receiver_->call_->DestroyFlexfecReceiveStream(flecfec_stream_);
+  });
+}
+
+void ReceiveVideoStream::Start() {
+  receiver_->SendTask([this] {
+    for (auto* recv_stream : receive_streams_)
+      recv_stream->Start();
+    receiver_->call_->SignalChannelNetworkState(MediaType::VIDEO, kNetworkUp);
+  });
+}
+
+void ReceiveVideoStream::Stop() {
+  receiver_->SendTask([this] {
+    for (auto* recv_stream : receive_streams_)
+      recv_stream->Stop();
+  });
+}
+
+VideoReceiveStreamInterface::Stats ReceiveVideoStream::GetStats() const {
+  if (receive_streams_.empty())
+    return VideoReceiveStreamInterface::Stats();
+  // TODO(srte): Handle multiple receive streams.
+  return receive_streams_.back()->GetStats();
+}
+
+VideoStreamPair::~VideoStreamPair() = default;
+
+VideoStreamPair::VideoStreamPair(CallClient* sender,
+                                 CallClient* receiver,
+                                 VideoStreamConfig config)
+    : config_(config),
+      matcher_(config.hooks.frame_pair_handlers),
+      send_stream_(sender, config, sender->transport_.get(), &matcher_),
+      receive_stream_(receiver,
+                      config,
+                      &send_stream_,
+                      /*chosen_stream=*/0,
+                      receiver->transport_.get(),
+                      &matcher_) {}
+
+}  // namespace test
+}  // namespace webrtc