Automatic resolution throttling for screen capture pipeline.

media/capture/thread_safe_capture_oracle.h

 // Copyright 2014 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.
 
 #ifndef MEDIA_CAPTURE_THREAD_SAFE_CAPTURE_ORACLE_H_
 #define MEDIA_CAPTURE_THREAD_SAFE_CAPTURE_ORACLE_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
 #include "media/base/video_frame.h"
-#include "media/capture/capture_resolution_chooser.h"
 #include "media/capture/video_capture_oracle.h"
 #include "media/video/capture/video_capture_device.h"
 
 namespace media {
 
 struct VideoCaptureParams;
 class VideoFrame;
 
 // Thread-safe, refcounted proxy to the VideoCaptureOracle.  This proxy wraps
 // the VideoCaptureOracle, which decides which frames to capture, and a
 // VideoCaptureDevice::Client, which allocates and receives the captured
 // frames, in a lock to synchronize state between the two.
 class MEDIA_EXPORT ThreadSafeCaptureOracle
     : public base::RefCountedThreadSafe<ThreadSafeCaptureOracle> {
  public:
   ThreadSafeCaptureOracle(scoped_ptr<VideoCaptureDevice::Client> client,
-                          const VideoCaptureParams& params);
+                          const VideoCaptureParams& params,
+                          bool enable_auto_throttling);
 
   // Called when a captured frame is available or an error has occurred.
   // If |success| is true then |frame| is valid and |timestamp| indicates when
   // the frame was painted.
   // If |success| is false, all other parameters are invalid.
   typedef base::Callback<void(const scoped_refptr<VideoFrame>& frame,
                               base::TimeTicks timestamp,
                               bool success)> CaptureFrameCallback;
 
   bool ObserveEventAndDecideCapture(VideoCaptureOracle::Event event,
@@ skipping 46 matching lines @@
   mutable base::Lock lock_;
 
   // Recipient of our capture activity.
   scoped_ptr<VideoCaptureDevice::Client> client_;
 
   // Makes the decision to capture a frame.
   VideoCaptureOracle oracle_;
 
   // The video capture parameters used to construct the oracle proxy.
   const VideoCaptureParams params_;
-
-  // Determines video capture frame sizes.
-  CaptureResolutionChooser resolution_chooser_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_THREAD_SAFE_CAPTURE_ORACLE_H_