Revert of Add VideoFrameRecorder for use recording test frame sequences.

remoting/host/video_frame_recorder.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 REMOTING_HOST_VIDEO_FRAME_RECORDER_H_
-#define REMOTING_HOST_VIDEO_FRAME_RECORDER_H_
-
-#include <stdint.h>
-#include <list>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/single_thread_task_runner.h"
-
-namespace webrtc {
-class DesktopFrame;
-}
-
-namespace remoting {
-
-class VideoEncoder;
-
-// Allows sequences of DesktopFrames passed to a VideoEncoder to be recorded.
-//
-// VideoFrameRecorder is design to support applications which use a dedicated
-// thread for video encoding, but need to manage that process from a "main"
-// or "control" thread.
-//
-// On the control thread:
-// 1. Create the VideoFrameRecorder on the controlling thread.
-// 2. Specify the amount of memory that may be used for recording.
-// 3. Call WrapVideoEncoder(), passing the actual VideoEncoder that will be
-//    used to encode frames.
-// 4. Hand the returned wrapper VideoEncoder of to the video encoding thread,
-//    to call in place of the actual VideoEncoder.
-// 5. Start/stop frame recording as necessary.
-// 6. Use NextFrame() to read each recorded frame in sequence.
-//
-// The wrapper VideoEncoder is designed to be handed off to the video encoding
-// thread, and used and torn down there.
-//
-// The VideoFrameRecorder and VideoEncoder may be torn down in any order; frame
-// recording will stop as soon as either is destroyed.
-
-class VideoFrameRecorder {
- public:
-  VideoFrameRecorder();
-  virtual ~VideoFrameRecorder();
-
-  // Wraps the supplied VideoEncoder, returning a replacement VideoEncoder that
-  // will route frames to the recorder, as well as passing them for encoding.
-  // This may be called at most once on each VideoFrameRecorder instance.
-  scoped_ptr<VideoEncoder> WrapVideoEncoder(scoped_ptr<VideoEncoder> encoder);
-
-  // Enables/disables frame recording. Frame recording is initially disabled.
-  void SetEnableRecording(bool enable_recording);
-
-  // Sets the maximum number of bytes of pixel data that may be recorded.
-  // When this maximum is reached older frames will be discard to make space
-  // for new ones.
-  void SetMaxContentBytes(int64_t max_content_bytes);
-
-  // Pops the next recorded frame in the sequence, and returns it.
-  scoped_ptr<webrtc::DesktopFrame> NextFrame();
-
- private:
-  class RecordingVideoEncoder;
-  friend class RecordingVideoEncoder;
-
-  void SetEncoderTaskRunner(scoped_refptr<base::TaskRunner> task_runner);
-  void RecordFrame(scoped_ptr<webrtc::DesktopFrame> frame);
-
-  // The recorded frames, in sequence.
-  std::list<webrtc::DesktopFrame*> recorded_frames_;
-
-  // Size of the recorded frames' content, in bytes.
-  int64_t content_bytes_;
-
-  // Size that recorded frames' content must not exceed.
-  int64_t max_content_bytes_;
-
-  // True if recording is started, false otherwise.
-  bool enable_recording_;
-
-  // Task runner on which the wrapper VideoEncoder is being run.
-  scoped_refptr<base::TaskRunner> encoder_task_runner_;
-
-  // Weak reference to the wrapper VideoEncoder, to use to control it.
-  base::WeakPtr<RecordingVideoEncoder> recording_encoder_;
-
-  scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
-  base::WeakPtrFactory<VideoFrameRecorder> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(VideoFrameRecorder);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_VIDEO_FRAME_RECORDER_H_