content/renderer/pepper/pepper_platform_camera_device.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 CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_CAMERA_DEVICE_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_CAMERA_DEVICE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/callback.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/threading/thread_checker.h"
  16 #include "content/common/media/video_capture.h"
  17 #include "media/base/video_capture_types.h"
  18
  19 class GURL;
  20
  21 namespace content {
  22 class PepperMediaDeviceManager;
  23 class PepperCameraDeviceHost;
  24
  25 // This object must only be used on the thread it's constructed on.
  26 class PepperPlatformCameraDevice {
  27  public:
  28   PepperPlatformCameraDevice(int render_frame_id,
  29                              const std::string& device_id,
  30                              const GURL& document_url,
  31                              PepperCameraDeviceHost* handler);
  32   ~PepperPlatformCameraDevice();
  33
  34   // Detaches the event handler and stops sending notifications to it.
  35   void DetachEventHandler();
  36
  37   void GetSupportedVideoCaptureFormats();
  38
  39  private:
  40   void OnDeviceOpened(int request_id, bool succeeded, const std::string& label);
  41
  42   // Called by VideoCaptureImplManager.
  43   void OnDeviceSupportedFormatsEnumerated(
  44       const media::VideoCaptureFormats& formats);
  45
  46   // Can return NULL if the RenderFrame referenced by |render_frame_id_| has
  47   // gone away.
  48   PepperMediaDeviceManager* GetMediaDeviceManager();
  49
  50   const int render_frame_id_;
  51   const std::string device_id_;
  52
  53   std::string label_;
  54   int session_id_;
  55   base::Closure release_device_cb_;
  56
  57   PepperCameraDeviceHost* handler_;
  58
  59   // Whether we have a pending request to open a device. We have to make sure
  60   // there isn't any pending request before this object goes away.
  61   bool pending_open_device_;
  62   int pending_open_device_id_;
  63
  64   base::ThreadChecker thread_checker_;
  65
  66   base::WeakPtrFactory<PepperPlatformCameraDevice> weak_factory_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(PepperPlatformCameraDevice);
  69 };
  70
  71 }  // namespace content
  72
  73 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_CAMERA_DEVICE_H_