Get VideoCapturer stats via VideoTrackSourceInterface in StatsCollector,

webrtc/media/base/videocapturer.cc

 /*
  *  Copyright (c) 2010 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 161 matching lines @@
   return ss.str();
 }
 
 void VideoCapturer::set_frame_factory(VideoFrameFactory* frame_factory) {
   frame_factory_.reset(frame_factory);
   if (frame_factory) {
     frame_factory->SetApplyRotation(apply_rotation_);
   }
 }
 
-void VideoCapturer::GetStats(VideoFormat* last_captured_frame_format) {
+bool VideoCapturer::GetInputSize(int* width, int* height) {
   rtc::CritScope cs(&frame_stats_crit_);
-  *last_captured_frame_format = last_captured_frame_format_;
+  if (!input_size_valid_) {
+    return false;
+  }
+  *width = input_width_;
+  *height = input_height_;
+
+  return true;
 }
 
 void VideoCapturer::RemoveSink(
     rtc::VideoSinkInterface<cricket::VideoFrame>* sink) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   broadcaster_.RemoveSink(sink);
   OnSinkWantsChanged(broadcaster_.wants());
 }
 
 void VideoCapturer::AddOrUpdateSink(
@@ skipping 189 matching lines @@
 
   if (!adapted_frame) {
     // TODO(fbarchard): LOG more information about captured frame attributes.
     LOG(LS_ERROR) << "Couldn't convert to I420! "
                   << "From " << ToString(captured_frame) << " To "
                   << cropped_width << " x " << cropped_height;
     return;
   }
 
   OnFrame(this, adapted_frame.get());
-  UpdateStats(captured_frame);
+  UpdateInputSize(captured_frame);
 }
 
 void VideoCapturer::OnFrame(VideoCapturer* capturer, const VideoFrame* frame) {
   broadcaster_.OnFrame(*frame);
 }
 
 void VideoCapturer::SetCaptureState(CaptureState state) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   if (state == capture_state_) {
     // Don't trigger a state changed callback if the state hasn't changed.
@@ skipping 124 matching lines @@
 
 bool VideoCapturer::ShouldFilterFormat(const VideoFormat& format) const {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   if (!enable_camera_list_) {
     return false;
   }
   return format.width > max_format_->width ||
          format.height > max_format_->height;
 }
 
-void VideoCapturer::UpdateStats(const CapturedFrame* captured_frame) {
+void VideoCapturer::UpdateInputSize(const CapturedFrame* captured_frame) {
   // Update stats protected from fetches from different thread.
   rtc::CritScope cs(&frame_stats_crit_);
 
-  last_captured_frame_format_.width = captured_frame->width;
-  last_captured_frame_format_.height = captured_frame->height;
-  // TODO(ronghuawu): Useful to report interval as well?
-  last_captured_frame_format_.interval = 0;
-  last_captured_frame_format_.fourcc = captured_frame->fourcc;
+  input_size_valid_ = true;
+  input_width_ = captured_frame->width;
+  input_height_ = captured_frame->height;
 }
 
 }  // namespace cricket