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 <stdint.h>
9 
10 #include "base/macros.h"
11 #include "ppapi/c/pp_size.h"
12 #include "ppapi/c/private/pp_video_capture_format.h"
13 #include "ppapi/proxy/connection.h"
14 #include "ppapi/proxy/plugin_resource.h"
15 #include "ppapi/proxy/ppapi_proxy_export.h"
16 #include "ppapi/shared_impl/resource.h"
17 #include "ppapi/thunk/ppb_camera_device_api.h"
18 
19 namespace ppapi {
20 namespace proxy {
21 
22 class CameraCapabilitiesResource;
23 
24 class PPAPI_PROXY_EXPORT CameraDeviceResource
25     : public PluginResource,
26       public thunk::PPB_CameraDevice_API {
27  public:
28   CameraDeviceResource(Connection connection, PP_Instance instance);
29   ~CameraDeviceResource() override;
30 
31   // Resource overrides:
AsPPB_CameraDevice_API()32   thunk::PPB_CameraDevice_API* AsPPB_CameraDevice_API() override {
33     return this;
34   }
35 
36   // PPB_CameraDevice_API implementation.
37   int32_t Open(PP_Var device_id,
38                const scoped_refptr<TrackedCallback>& callback) override;
39   void Close() override;
40   int32_t GetCameraCapabilities(
41       PP_Resource* capabilities,
42       const scoped_refptr<TrackedCallback>& callback) override;
43 
44  private:
45   enum class OpenState { BEFORE_OPEN, OPENED, CLOSED };
46 
47   void OnPluginMsgGetVideoCaptureFormatsReply(
48       PP_Resource* capabilities_output,
49       const ResourceMessageReplyParams& params,
50       const std::vector<PP_VideoCaptureFormat>& formats);
51 
52   void OnPluginMsgOpenReply(const ResourceMessageReplyParams& params);
53 
is_opened()54   bool is_opened() const { return open_state_ == OpenState::OPENED; }
55 
56   // Holds a reference of the callback so that Close() can cancel it.
57   scoped_refptr<TrackedCallback> open_callback_;
58   OpenState open_state_;
59 
60   scoped_refptr<TrackedCallback> get_capabilities_callback_;
61   scoped_refptr<CameraCapabilitiesResource> camera_capabilities_;
62 
63   DISALLOW_COPY_AND_ASSIGN(CameraDeviceResource);
64 };
65 
66 }  // namespace proxy
67 }  // namespace ppapi
68 
69 #endif  // PPAPI_PROXY_CAMERA_DEVICE_RESOURCE_H_
70