Added large room scenario to full-stack tests. Added thumbnail streams functionality to call test/v…

webrtc/test/call_test.cc

Index: webrtc/test/call_test.cc
diff --git a/webrtc/test/call_test.cc b/webrtc/test/call_test.cc
index 68d6857e29d7208d85a8af114227b5fb951b25f9..fbb94e126f654e9f033e8489d7a8ccc1e8d72d4c 100644
--- a/webrtc/test/call_test.cc
+++ b/webrtc/test/call_test.cc
@@ -226,28 +226,34 @@ void CallTest::CreateSendConfig(size_t num_video_streams,
   }
 }
 
+void CallTest::CreateMatchingVideoReceiveConfigs(
+    const VideoSendStream::Config& video_send_config,
+    Transport* rtcp_send_transport) {
+  RTC_DCHECK(!video_send_config.rtp.ssrcs.empty());
+  VideoReceiveStream::Config video_config(rtcp_send_transport);
+  video_config.rtp.remb = false;
+  video_config.rtp.transport_cc = 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());
+  }
+}
+
 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 = false;
-    video_config.rtp.transport_cc = 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());
-    }
+    CreateMatchingVideoReceiveConfigs(video_send_config_, rtcp_send_transport);
   }
 
   RTC_DCHECK_GE(1, num_audio_streams_);
@@ -347,6 +353,7 @@ void CallTest::DestroyStreams() {
   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);