Revert r48735 "Added user image screen for new user login (or old user logging in through"

chrome/browser/chromeos/login/camera.h

-// Copyright (c) 2010 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 CHROME_BROWSER_CHROMEOS_LOGIN_CAMERA_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_CAMERA_H_
-
-#include <string>
-#include <vector>
-
-#include "base/timer.h"
-
-class SkBitmap;
-
-namespace base {
-class TimeDelta;
-}  // namespace base
-
-namespace chromeos {
-
-// Class that wraps interaction with video capturing device. Returns
-// frames captured with specified intervals of time via delegate interface.
-class Camera {
- public:
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Called with specified intervals with decoded frame as a parameter.
-    virtual void OnVideoFrameCaptured(const SkBitmap& frame) = 0;
-  };
-
-  explicit Camera(Delegate* delegate);
-  ~Camera();
-
-  // Initializes camera device. Returns true if succeeded, false otherwise.
-  // Does nothing on subsequent calls until Uninitialize is called.
-  // Sets the desired width and height of the frame to receive from camera.
-  bool Initialize(int desired_width, int desired_height);
-
-  // Uninitializes the camera. Can be called anytime, any number of times.
-  void Uninitialize();
-
-  // Starts capturing video frames with specified interval.
-  // Does nothing on subsequent calls until StopCapturing is called.
-  // Returns true if succeeded, false otherwise.
-  bool StartCapturing(const base::TimeDelta& interval);
-
-  // Stops capturing video frames. Can be called anytime, any number of
-  // times.
-  void StopCapturing();
-
- private:
-  // Tries to open the device with specified name. Returns opened device
-  // descriptor if succeeds, -1 otherwise.
-  int OpenDevice(const char* device_name) const;
-
-  // Initializes reading mode for the device. Returns true on success, false
-  // otherwise.
-  bool InitializeReadingMode(int fd);
-
-  // Unmaps video buffers stored in |buffers_|.
-  void UnmapVideoBuffers();
-
-  // Called by |timer_| to get the frame from video device and send it to
-  // |delegate_| via its method.
-  void OnCapture();
-
-  // Reads a frame from the video device. If retry is needed, returns false.
-  // Otherwise, returns true despite of success status.
-  bool ReadFrame();
-
-  // Transforms raw data received from camera into SkBitmap with desired
-  // size and notifies the delegate that the image is ready.
-  void ProcessImage(void* data);
-
-  // Defines a buffer in memory where one frame from the camera is stored.
-  struct VideoBuffer {
-    void* start;
-    size_t length;
-  };
-
-  // Delegate that receives the frames from the camera.
-  Delegate* delegate_;
-
-  // Name of the device file, i.e. "/dev/video0".
-  std::string device_name_;
-
-  // File descriptor of the opened device.
-  int device_descriptor_;
-
-  // Vector of buffers where to store video frames from camera.
-  std::vector<VideoBuffer> buffers_;
-
-  // Timer for getting frames.
-  base::RepeatingTimer<Camera> timer_;
-
-  // Desired size of the frame to get from camera. If it doesn't match
-  // camera's supported resolution, higher resolution is selected (if
-  // available) and frame is cropped. If higher resolution is not available,
-  // the highest is selected and resized.
-  int desired_width_;
-  int desired_height_;
-
-  // Size of the frame that camera will give to us. It may not match the
-  // desired size.
-  int frame_width_;
-  int frame_height_;
-
-  DISALLOW_COPY_AND_ASSIGN(Camera);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_CAMERA_H_