Support simulcast and spatial layers in VideoQualityTest (PERF NOTE)

webrtc/video/video_send_stream.cc

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 352 matching lines @@
 
   strncpy(video_codec.plName,
           config_.encoder_settings.payload_name.c_str(),
           kPayloadNameSize - 1);
   video_codec.plName[kPayloadNameSize - 1] = '\0';
   video_codec.plType = config_.encoder_settings.payload_type;
   video_codec.numberOfSimulcastStreams =
       static_cast<unsigned char>(streams.size());
   video_codec.minBitrate = streams[0].min_bitrate_bps / 1000;
   RTC_DCHECK_LE(streams.size(), static_cast<size_t>(kMaxSimulcastStreams));
+  if (video_codec.codecType == kVideoCodecVP9) {
+    // If the vector is empty, bitrates will be configured automatically.
+    RTC_DCHECK(config.spatial_layers.empty() ||
+               config.spatial_layers.size() ==
+                   video_codec.codecSpecific.VP9.numberOfSpatialLayers);
+    RTC_DCHECK_LE(video_codec.codecSpecific.VP9.numberOfSpatialLayers,
+                  kMaxSimulcastStreams);
+    for (size_t i = 0; i < config.spatial_layers.size(); ++i)
+      video_codec.spatialLayers[i] = config.spatial_layers[i];
+  }
   for (size_t i = 0; i < streams.size(); ++i) {
     SimulcastStream* sim_stream = &video_codec.simulcastStream[i];
     RTC_DCHECK_GT(streams[i].width, 0u);
     RTC_DCHECK_GT(streams[i].height, 0u);
     RTC_DCHECK_GT(streams[i].max_framerate, 0);
     // Different framerates not supported per stream at the moment.
     RTC_DCHECK_EQ(streams[i].max_framerate, streams[0].max_framerate);
     RTC_DCHECK_GE(streams[i].min_bitrate_bps, 0);
     RTC_DCHECK_GE(streams[i].target_bitrate_bps, streams[i].min_bitrate_bps);
     RTC_DCHECK_GE(streams[i].max_bitrate_bps, streams[i].target_bitrate_bps);
@@ skipping 173 matching lines @@
                                        vie_channel_->IsSendingFecEnabled());
 
   // Restart the media flow
   vie_encoder_->Restart();
 
   return true;
 }
 
 }  // namespace internal
 }  // namespace webrtc