Increase logging severity level for SW fallback.

webrtc/media/engine/videoencodersoftwarefallbackwrapper.cc

 /*
  *  Copyright (c) 2016 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 72 matching lines @@
       callback_(nullptr),
       forced_fallback_possible_(EnableForcedFallback(codec)) {
   if (forced_fallback_possible_) {
     GetForcedFallbackParamsFromFieldTrialGroup(&forced_fallback_.low_kbps,
                                                &forced_fallback_.high_kbps,
                                                &forced_fallback_.min_low_ms);
   }
 }
 
 bool VideoEncoderSoftwareFallbackWrapper::InitFallbackEncoder() {
+  LOG(LS_WARNING) << "Encoder falling back to software encoding.";
   MaybeModifyCodecForFallback();
   cricket::InternalEncoderFactory internal_factory;
   if (!FindMatchingCodec(internal_factory.supported_codecs(), codec_)) {
     LOG(LS_WARNING)
         << "Encoder requesting fallback to codec not supported in software.";
     return false;
   }
   fallback_encoder_.reset(internal_factory.CreateVideoEncoder(codec_));
   if (fallback_encoder_->InitEncode(&codec_settings_, number_of_cores_,
                                     max_payload_size_) !=
@@ skipping 37 matching lines @@
 
   // Try to reinit forced software codec if it is in use.
   if (TryReInitForcedFallbackEncoder()) {
     return WEBRTC_VIDEO_CODEC_OK;
   }
   forced_fallback_.Reset();
 
   int32_t ret =
       encoder_->InitEncode(codec_settings, number_of_cores, max_payload_size);
   if (ret == WEBRTC_VIDEO_CODEC_OK || codec_.name.empty()) {
-    if (fallback_encoder_)
+    if (fallback_encoder_) {
+      LOG(LS_WARNING)
+          << "InitEncode OK, no longer using the software fallback encoder.";
       fallback_encoder_->Release();
+    }
     fallback_encoder_.reset();
     if (callback_)
       encoder_->RegisterEncodeCompleteCallback(callback_);
     return ret;
   }
   // Try to instantiate software codec.
   if (InitFallbackEncoder()) {
     return WEBRTC_VIDEO_CODEC_OK;
   }
   // Software encoder failed, use original return code.
@@ skipping 198 matching lines @@
 void VideoEncoderSoftwareFallbackWrapper::MaybeModifyCodecForFallback() {
   // We have a specific case for H264 ConstrainedBaseline because that is the
   // only supported profile in Sw fallback.
   if (!cricket::CodecNamesEq(codec_.name.c_str(), cricket::kH264CodecName))
     return;
   codec_.SetParam(cricket::kH264FmtpProfileLevelId,
                   cricket::kH264ProfileLevelConstrainedBaseline);
 }
 
 }  // namespace webrtc