tizen_src/chromium_impl/media/capture/video/tizen/video_capture_device_tizen.h

   1 // Copyright (c) 2012 The Samsung 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 // Tizen specific implementation of VideoCaptureDevice.
   6 // Tizen Core API is used to capture the video frames from the device.
   7
   8 #ifndef MEDIA_VIDEO_CAPTURE_TIZEN_VIDEO_CAPTURE_DEVICE_TIZEN_H_
   9 #define MEDIA_VIDEO_CAPTURE_TIZEN_VIDEO_CAPTURE_DEVICE_TIZEN_H_
  10
  11 #include <camera.h>
  12
  13 #include "base/threading/thread.h"
  14 #include "media/capture/video/video_capture_device.h"
  15
  16 namespace media {
  17
  18 class VideoCaptureDeviceTizen : public VideoCaptureDevice {
  19  public:
  20   const static std::string kFrontCameraName;
  21   const static std::string kBackCameraName;
  22   const static std::string kFrontCameraId;
  23   const static std::string kBackCameraId;
  24
  25   explicit VideoCaptureDeviceTizen(const Name& device_name);
  26   virtual ~VideoCaptureDeviceTizen() override;
  27
  28   virtual void AllocateAndStart(const VideoCaptureParams& params,
  29                                 scoped_ptr<Client> client) override;
  30
  31   virtual void StopAndDeAllocate() override;
  32
  33   static camera_device_e DeviceNameToCameraId(
  34     const VideoCaptureDevice::Name& device_name);
  35
  36   static std::string GetCameraErrorMessage(int err_code);
  37
  38  private:
  39   enum InternalState {
  40     kIdle,  // The device driver is opened but camera is not in use.
  41     kCapturing,  // Video is being captured.
  42     kError  // Error accessing HW functions.
  43             // User needs to recover by destroying the object.
  44   };
  45
  46   static void OnCameraCaptured(camera_preview_data_s* frame, void* data);
  47   void OnAllocateAndStart(int width,
  48                           int height,
  49                           int frame_rate,
  50                           VideoPixelFormat format,
  51                           scoped_ptr<Client> client);
  52   void OnStopAndDeAllocate();
  53
  54   bool AllocateVideoBuffers(int width, int height);
  55   void DeAllocateVideoBuffers();
  56   void SetErrorState(const std::string& reason);
  57
  58   InternalState state_;
  59   scoped_ptr<VideoCaptureDevice::Client> client_;
  60   Name device_name_;
  61   base::Thread worker_;  // Thread used for reading data from the device.
  62   scoped_ptr<VideoCaptureDevice::Client::Buffer> buffer_;
  63   camera_h camera_;
  64   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceTizen);
  65 };
  66
  67 }  // namespace media
  68
  69 #endif  // MEDIA_VIDEO_CAPTURE_TIZEN_VIDEO_CAPTURE_DEVICE_TIZEN_H_