ppapi/proxy/camera_device_resource.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 PPAPI_PROXY_CAMERA_DEVICE_RESOURCE_H_
   6 #define PPAPI_PROXY_CAMERA_DEVICE_RESOURCE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ppapi/c/pp_size.h"
  10 #include "ppapi/c/private/pp_video_capture_format.h"
  11 #include "ppapi/proxy/connection.h"
  12 #include "ppapi/proxy/plugin_resource.h"
  13 #include "ppapi/proxy/ppapi_proxy_export.h"
  14 #include "ppapi/shared_impl/resource.h"
  15 #include "ppapi/thunk/ppb_camera_device_api.h"
  16
  17 namespace ppapi {
  18 namespace proxy {
  19
  20 class CameraCapabilitiesResource;
  21
  22 class PPAPI_PROXY_EXPORT CameraDeviceResource
  23     : public PluginResource,
  24       public thunk::PPB_CameraDevice_API {
  25  public:
  26   CameraDeviceResource(Connection connection, PP_Instance instance);
  27   ~CameraDeviceResource() override;
  28
  29   // Resource overrides:
  30   thunk::PPB_CameraDevice_API* AsPPB_CameraDevice_API() override {
  31     return this;
  32   }
  33
  34   // PPB_CameraDevice_API implementation.
  35   int32_t Open(PP_Var device_id,
  36                const scoped_refptr<TrackedCallback>& callback) override;
  37   void Close() override;
  38   int32_t GetCameraCapabilities(
  39       PP_Resource* capabilities,
  40       const scoped_refptr<TrackedCallback>& callback) override;
  41
  42  private:
  43   enum class OpenState { BEFORE_OPEN, OPENED, CLOSED };
  44
  45   void OnPluginMsgGetVideoCaptureFormatsReply(
  46       PP_Resource* capabilities_output,
  47       const ResourceMessageReplyParams& params,
  48       const std::vector<PP_VideoCaptureFormat>& formats);
  49
  50   void OnPluginMsgOpenReply(const ResourceMessageReplyParams& params);
  51
  52   bool is_opened() const { return open_state_ == OpenState::OPENED; }
  53
  54   // Holds a reference of the callback so that Close() can cancel it.
  55   scoped_refptr<TrackedCallback> open_callback_;
  56   OpenState open_state_;
  57
  58   scoped_refptr<TrackedCallback> get_capabilities_callback_;
  59   scoped_refptr<CameraCapabilitiesResource> camera_capabilities_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(CameraDeviceResource);
  62 };
  63
  64 }  // namespace proxy
  65 }  // namespace ppapi
  66
  67 #endif  // PPAPI_PROXY_CAMERA_DEVICE_RESOURCE_H_