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   ~V4L2Webcam() override;
  18
  19   bool Open();
  20
  21  private:
  22   bool EnsureLogitechCommandsMapped();
  23   bool SetWebcamParameter(int fd, uint32_t control_id, int value);
  24   bool GetWebcamParameter(int fd, uint32_t control_id, int* value);
  25
  26   // Webcam:
  27   void Reset(bool pan, bool tilt, bool zoom) override;
  28   bool GetPan(int* value) override;
  29   bool GetTilt(int* value) override;
  30   bool GetZoom(int* value) override;
  31   bool SetPan(int value) override;
  32   bool SetTilt(int value) override;
  33   bool SetZoom(int value) override;
  34   bool SetPanDirection(PanDirection direction) override;
  35   bool SetTiltDirection(TiltDirection direction) override;
  36
  37   const std::string device_id_;
  38   base::ScopedFD fd_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(V4L2Webcam);
  41 };
  42
  43
  44 }  // namespace extensions
  45
  46 #endif  // EXTENSIONS_BROWSER_API_WEBCAM_PRIVATE_V4L2_WEBCAM_H_