extensions/browser/api/webcam_private/v4l2_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_V4L2_WEBCAM_H_
   6 #define EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_V4L2_WEBCAM_H_
   7
   8 #include "extensions/browser/api/webcam_private/webcam.h"
   9
  10 #include "base/files/scoped_file.h"
  11
  12 namespace extensions {
  13
  14 class V4L2Webcam : public Webcam {
  15  public:
  16   V4L2Webcam(const std::string& device_id);
  17   bool Open();
  18
  19  private:
  20   ~V4L2Webcam() override;
  21   bool EnsureLogitechCommandsMapped();
  22   bool SetWebcamParameter(int fd, uint32_t control_id, int value);
  23   bool GetWebcamParameter(int fd, uint32_t control_id, int* value);
  24
  25   // Webcam:
  26   void GetPan(const GetPTZCompleteCallback& callback) override;
  27   void GetTilt(const GetPTZCompleteCallback& callback) override;
  28   void GetZoom(const GetPTZCompleteCallback& callback) override;
  29   void SetPan(int value,
  30               int pan_speed,
  31               const SetPTZCompleteCallback& callback) override;
  32   void SetTilt(int value,
  33                int tilt_speed,
  34                const SetPTZCompleteCallback& callback) override;
  35   void SetZoom(int value, const SetPTZCompleteCallback& callback) override;
  36   void SetPanDirection(PanDirection direction,
  37                        int pan_speed,
  38                        const SetPTZCompleteCallback& callback) override;
  39   void SetTiltDirection(TiltDirection direction,
  40                         int tilt_speed,
  41                         const SetPTZCompleteCallback& callback) override;
  42   void Reset(bool pan,
  43              bool tilt,
  44              bool zoom,
  45              const SetPTZCompleteCallback& callback) override;
  46
  47   const std::string device_id_;
  48   base::ScopedFD fd_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(V4L2Webcam);
  51 };
  52
  53
  54 }  // namespace extensions
  55
  56 #endif  // EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_V4L2_WEBCAM_H_