extensions/browser/api/webcam_private/webcam.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_WEBCAM_H_
   6 #define EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_WEBCAM_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/macros.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "extensions/browser/api/api_resource.h"
  15
  16 namespace extensions {
  17
  18 class Webcam : public base::RefCounted<Webcam> {
  19  public:
  20   enum PanDirection {
  21     PAN_LEFT,
  22     PAN_RIGHT,
  23     PAN_STOP,
  24   };
  25
  26   enum TiltDirection {
  27     TILT_UP,
  28     TILT_DOWN,
  29     TILT_STOP,
  30   };
  31
  32   Webcam();
  33
  34   virtual void Reset(bool pan, bool tilt, bool zoom) = 0;
  35   virtual bool GetPan(int* value) = 0;
  36   virtual bool GetTilt(int* value) = 0;
  37   virtual bool GetZoom(int* value) = 0;
  38   virtual bool SetPan(int value) = 0;
  39   virtual bool SetTilt(int value) = 0;
  40   virtual bool SetZoom(int value) = 0;
  41   virtual bool SetPanDirection(PanDirection direction) = 0;
  42   virtual bool SetTiltDirection(TiltDirection direction) = 0;
  43
  44  protected:
  45   friend class base::RefCounted<Webcam>;
  46   virtual ~Webcam();
  47
  48  private:
  49   DISALLOW_COPY_AND_ASSIGN(Webcam);
  50 };
  51
  52 class WebcamResource : public ApiResource {
  53  public:
  54   WebcamResource(const std::string& owner_extension_id,
  55                  Webcam* webcam,
  56                  const std::string& webcam_id);
  57   ~WebcamResource() override;
  58
  59   static const content::BrowserThread::ID kThreadId =
  60       content::BrowserThread::UI;
  61
  62   Webcam* GetWebcam() const;
  63   const std::string GetWebcamId() const;
  64
  65   // ApiResource overrides.
  66   bool IsPersistent() const override;
  67
  68  private:
  69   scoped_refptr<Webcam> webcam_;
  70   std::string webcam_id_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(WebcamResource);
  73 };
  74
  75 }  // namespace extensions
  76
  77 #endif  // EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_WEBCAM_H_