Expose codec implementation names in stats.

webrtc/video/video_encoder.cc

 /*
  *  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.
  */
 
@@ skipping 58 matching lines @@
     return false;
   }
   // Replay callback, rates, and channel parameters.
   if (callback_)
     fallback_encoder_->RegisterEncodeCompleteCallback(callback_);
   if (rates_set_)
     fallback_encoder_->SetRates(bitrate_, framerate_);
   if (channel_parameters_set_)
     fallback_encoder_->SetChannelParameters(packet_loss_, rtt_);
 
+  fallback_implementation_name_ =
+      std::string(fallback_encoder_->ImplementationName()) +
+      " (fallback from: " + encoder_->ImplementationName() + ")";
   // Since we're switching to the fallback encoder, Release the real encoder. It
   // may be re-initialized via InitEncode later, and it will continue to get
   // Set calls for rates and channel parameters in the meantime.
   encoder_->Release();
   return true;
 }
 
 int32_t VideoEncoderSoftwareFallbackWrapper::InitEncode(
     const VideoCodec* codec_settings,
     int32_t number_of_cores,
@@ skipping 86 matching lines @@
     return fallback_encoder_->OnDroppedFrame();
   return encoder_->OnDroppedFrame();
 }
 
 bool VideoEncoderSoftwareFallbackWrapper::SupportsNativeHandle() const {
   if (fallback_encoder_)
     return fallback_encoder_->SupportsNativeHandle();
   return encoder_->SupportsNativeHandle();
 }
 
+const char* VideoEncoderSoftwareFallbackWrapper::ImplementationName() const {
+  if (fallback_encoder_)
+    return fallback_implementation_name_.c_str();
+  return encoder_->ImplementationName();
+}
+
 int VideoEncoderSoftwareFallbackWrapper::GetTargetFramerate() {
   if (fallback_encoder_)
     return fallback_encoder_->GetTargetFramerate();
   return encoder_->GetTargetFramerate();
 }
 
 }  // namespace webrtc