Move ContentVideoCaptureDeviceCore from src/content to src/media

content/browser/media/capture/content_video_capture_device_core.h

Index: content/browser/media/capture/content_video_capture_device_core.h
diff --git a/content/browser/media/capture/content_video_capture_device_core.h b/content/browser/media/capture/content_video_capture_device_core.h
deleted file mode 100644
index 50600cf42998aa12225be2c7df78e2a907e03193..0000000000000000000000000000000000000000
--- a/content/browser/media/capture/content_video_capture_device_core.h
+++ /dev/null
@@ -1,185 +0,0 @@
-// 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 CONTENT_BROWSER_MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_DEVICE_CORE_H_
-#define CONTENT_BROWSER_MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_DEVICE_CORE_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread.h"
-#include "base/threading/thread_checker.h"
-#include "content/browser/media/capture/capture_resolution_chooser.h"
-#include "content/browser/media/capture/video_capture_oracle.h"
-#include "content/common/content_export.h"
-#include "media/base/video_frame.h"
-#include "media/video/capture/video_capture_device.h"
-
-namespace media {
-class VideoCaptureParams;
-class VideoFrame;
-}  // namespace media
-
-namespace content {
-
-class VideoCaptureMachine;
-
-// 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 ThreadSafeCaptureOracle
-    : public base::RefCountedThreadSafe<ThreadSafeCaptureOracle> {
- public:
-  ThreadSafeCaptureOracle(scoped_ptr<media::VideoCaptureDevice::Client> client,
-                          const media::VideoCaptureParams& params);
-
-  // 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<media::VideoFrame>& frame,
-                              base::TimeTicks timestamp,
-                              bool success)> CaptureFrameCallback;
-
-  bool ObserveEventAndDecideCapture(VideoCaptureOracle::Event event,
-                                    const gfx::Rect& damage_rect,
-                                    base::TimeTicks event_time,
-                                    scoped_refptr<media::VideoFrame>* storage,
-                                    CaptureFrameCallback* callback);
-
-  base::TimeDelta min_capture_period() const {
-    return oracle_.min_capture_period();
-  }
-
-  gfx::Size max_frame_size() const {
-    return params_.requested_format.frame_size;
-  }
-
-  // Returns the current capture resolution.
-  gfx::Size GetCaptureSize() const;
-
-  // Updates capture resolution based on the supplied source size and the
-  // maximum frame size.
-  void UpdateCaptureSize(const gfx::Size& source_size);
-
-  // Stop new captures from happening (but doesn't forget the client).
-  void Stop();
-
-  // Signal an error to the client.
-  void ReportError(const std::string& reason);
-
- private:
-  friend class base::RefCountedThreadSafe<ThreadSafeCaptureOracle>;
-  virtual ~ThreadSafeCaptureOracle();
-
-  // Callback invoked on completion of all captures.
-  void DidCaptureFrame(
-      int frame_number,
-      scoped_ptr<media::VideoCaptureDevice::Client::Buffer> buffer,
-      base::TimeTicks capture_begin_time,
-      base::TimeDelta estimated_frame_duration,
-      const scoped_refptr<media::VideoFrame>& frame,
-      base::TimeTicks timestamp,
-      bool success);
-
-  // Protects everything below it.
-  mutable base::Lock lock_;
-
-  // Recipient of our capture activity.
-  scoped_ptr<media::VideoCaptureDevice::Client> client_;
-
-  // Makes the decision to capture a frame.
-  VideoCaptureOracle oracle_;
-
-  // The video capture parameters used to construct the oracle proxy.
-  const media::VideoCaptureParams params_;
-
-  // Determines video capture frame sizes.
-  CaptureResolutionChooser resolution_chooser_;
-};
-
-// Keeps track of the video capture source frames and executes copying on the
-// UI BrowserThread.
-class VideoCaptureMachine {
- public:
-  VideoCaptureMachine() {}
-  virtual ~VideoCaptureMachine() {}
-
-  // Starts capturing. Returns true if succeeded.
-  // Must be run on the UI BrowserThread.
-  virtual bool Start(const scoped_refptr<ThreadSafeCaptureOracle>& oracle_proxy,
-                     const media::VideoCaptureParams& params) = 0;
-
-  // Stops capturing. Must be run on the UI BrowserThread.
-  // |callback| is invoked after the capturing has stopped.
-  virtual void Stop(const base::Closure& callback) = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(VideoCaptureMachine);
-};
-
-// The "meat" of a content video capturer.
-//
-// Separating this from the "shell classes" WebContentsVideoCaptureDevice and
-// DesktopCaptureDeviceAura allows safe destruction without needing to block any
-// threads, as well as code sharing.
-//
-// ContentVideoCaptureDeviceCore manages a simple state machine and the pipeline
-// (see notes at top of this file).  It times the start of successive captures
-// and facilitates the processing of each through the stages of the
-// pipeline.
-class CONTENT_EXPORT ContentVideoCaptureDeviceCore
-    : public base::SupportsWeakPtr<ContentVideoCaptureDeviceCore> {
- public:
-  ContentVideoCaptureDeviceCore(
-      scoped_ptr<VideoCaptureMachine> capture_machine);
-  virtual ~ContentVideoCaptureDeviceCore();
-
-  // Asynchronous requests to change ContentVideoCaptureDeviceCore state.
-  void AllocateAndStart(const media::VideoCaptureParams& params,
-                        scoped_ptr<media::VideoCaptureDevice::Client> client);
-  void StopAndDeAllocate();
-
- private:
-  // Flag indicating current state.
-  enum State {
-    kIdle,
-    kCapturing,
-    kError
-  };
-
-  void TransitionStateTo(State next_state);
-
-  // Called back in response to StartCaptureMachine().  |success| is true if
-  // capture machine succeeded to start.
-  void CaptureStarted(bool success);
-
-  // Stops capturing and notifies client_ of an error state.
-  void Error(const std::string& reason);
-
-  // Tracks that all activity occurs on the media stream manager's thread.
-  base::ThreadChecker thread_checker_;
-
-  // Current lifecycle state.
-  State state_;
-
-  // Tracks the CaptureMachine that's doing work on our behalf on the UI thread.
-  // This value should never be dereferenced by this class, other than to
-  // create and destroy it on the UI thread.
-  scoped_ptr<VideoCaptureMachine> capture_machine_;
-
-  // Our thread-safe capture oracle which serves as the gateway to the video
-  // capture pipeline. Besides the VideoCaptureDevice itself, it is the only
-  // component of the system with direct access to |client_|.
-  scoped_refptr<ThreadSafeCaptureOracle> oracle_proxy_;
-
-  DISALLOW_COPY_AND_ASSIGN(ContentVideoCaptureDeviceCore);
-};
-
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_DEVICE_CORE_H_