RESOURCE_UTILIZATION in VideoFrameMetadata, a consumer feedback signal.

content/browser/renderer_host/media/video_capture_host.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/media/video_capture_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_main_loop.h"
@@ skipping 141 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 // IPC Messages handler.
 bool VideoCaptureHost::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(VideoCaptureHost, message)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Start, OnStartCapture)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Pause, OnPauseCapture)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Resume, OnResumeCapture)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_Stop, OnStopCapture)
-    IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_BufferReady, OnReceiveEmptyBuffer)
+    IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_BufferReady,
+                        OnRendererFinishedWithBuffer)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_GetDeviceSupportedFormats,
                         OnGetDeviceSupportedFormats)
     IPC_MESSAGE_HANDLER(VideoCaptureHostMsg_GetDeviceFormatsInUse,
                         OnGetDeviceFormatsInUse)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
@@ skipping 92 matching lines @@
   EntryMap::iterator it = entries_.find(controller_id);
   if (it == entries_.end())
     return;
 
   if (it->second) {
     media_stream_manager_->video_capture_manager()->ResumeCaptureForClient(
         session_id, params, it->second.get(), controller_id, this);
   }
 }
 
-void VideoCaptureHost::OnReceiveEmptyBuffer(int device_id,
-                                            int buffer_id,
-                                            uint32 sync_point) {
+void VideoCaptureHost::OnRendererFinishedWithBuffer(
+    int device_id,
+    int buffer_id,
+    uint32 sync_point,
+    double consumer_resource_utilization) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   VideoCaptureControllerID controller_id(device_id);
   EntryMap::iterator it = entries_.find(controller_id);
   if (it != entries_.end()) {
     const base::WeakPtr<VideoCaptureController>& controller = it->second;
-    if (controller)
-      controller->ReturnBuffer(controller_id, this, buffer_id, sync_point);
+    if (controller) {
+      controller->ReturnBuffer(controller_id,
+                               this,
+                               buffer_id,
+                               sync_point,
+                               consumer_resource_utilization);
+    }
   }
 }
 
 void VideoCaptureHost::OnGetDeviceSupportedFormats(
     int device_id,
     media::VideoCaptureSessionId capture_session_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DVLOG(1) << "VideoCaptureHost::OnGetDeviceFormats, capture_session_id "
            << capture_session_id;
   media::VideoCaptureFormats device_supported_formats;
@@ skipping 33 matching lines @@
     return;
 
   if (it->second) {
     media_stream_manager_->video_capture_manager()->StopCaptureForClient(
         it->second.get(), controller_id, this, on_error);
   }
   entries_.erase(it);
 }
 
 }  // namespace content