1 // Copyright (c) 2012 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_VIDEO_CAPTURE_RESOURCE_H_ 6 #define PPAPI_PROXY_VIDEO_CAPTURE_RESOURCE_H_ 7 8 #include "base/compiler_specific.h" 9 #include "ppapi/c/dev/ppp_video_capture_dev.h" 10 #include "ppapi/proxy/device_enumeration_resource_helper.h" 11 #include "ppapi/proxy/plugin_resource.h" 12 #include "ppapi/thunk/ppb_video_capture_api.h" 13 14 namespace ppapi { 15 namespace proxy { 16 17 class VideoCaptureResource 18 : public PluginResource, 19 public ::ppapi::thunk::PPB_VideoCapture_API { 20 public: 21 VideoCaptureResource(Connection connection, 22 PP_Instance instance, 23 PluginDispatcher* dispatcher); 24 virtual ~VideoCaptureResource(); 25 26 // PluginResource override. 27 virtual thunk::PPB_VideoCapture_API* AsPPB_VideoCapture_API() OVERRIDE { 28 return this; 29 } 30 31 // PPB_VideoCapture_API implementation. 32 virtual int32_t EnumerateDevices( 33 const PP_ArrayOutput& output, 34 scoped_refptr<TrackedCallback> callback) OVERRIDE; 35 virtual int32_t MonitorDeviceChange( 36 PP_MonitorDeviceChangeCallback callback, 37 void* user_data) OVERRIDE; 38 virtual int32_t Open(const std::string& device_id, 39 const PP_VideoCaptureDeviceInfo_Dev& requested_info, 40 uint32_t buffer_count, 41 scoped_refptr<TrackedCallback> callback) OVERRIDE; 42 virtual int32_t StartCapture() OVERRIDE; 43 virtual int32_t ReuseBuffer(uint32_t buffer) OVERRIDE; 44 virtual int32_t StopCapture() OVERRIDE; 45 virtual void Close() OVERRIDE; 46 virtual int32_t EnumerateDevicesSync(const PP_ArrayOutput& devices) OVERRIDE; 47 48 protected: 49 // Resource override. 50 virtual void LastPluginRefWasDeleted() OVERRIDE; 51 52 private: 53 enum OpenState { 54 BEFORE_OPEN, 55 OPENED, 56 CLOSED 57 }; 58 59 // PluginResource overrides. 60 virtual void OnReplyReceived(const ResourceMessageReplyParams& params, 61 const IPC::Message& msg) OVERRIDE; 62 63 void OnPluginMsgOnDeviceInfo(const ResourceMessageReplyParams& params, 64 const struct PP_VideoCaptureDeviceInfo_Dev& info, 65 const std::vector<HostResource>& buffers, 66 uint32_t buffer_size); 67 void OnPluginMsgOnStatus(const ResourceMessageReplyParams& params, 68 uint32_t status); 69 void OnPluginMsgOnError(const ResourceMessageReplyParams& params, 70 uint32_t error); 71 void OnPluginMsgOnBufferReady(const ResourceMessageReplyParams& params, 72 uint32_t buffer); 73 74 void OnPluginMsgOpenReply(const ResourceMessageReplyParams& params); 75 76 void SetBufferInUse(uint32_t buffer_index); 77 78 // Points to the C interface of client implementation. 79 const PPP_VideoCapture_Dev* ppp_video_capture_impl_; 80 81 // Indicates that the i-th buffer is currently in use. 82 std::vector<bool> buffer_in_use_; 83 84 // Holds a reference of the callback so that Close() can cancel it. 85 scoped_refptr<TrackedCallback> open_callback_; 86 OpenState open_state_; 87 88 DeviceEnumerationResourceHelper enumeration_helper_; 89 90 DISALLOW_COPY_AND_ASSIGN(VideoCaptureResource); 91 }; 92 93 } // namespace proxy 94 } // namespace ppapi 95 96 #endif // PPAPI_PROXY_VIDEO_CAPTURE_RESOURCE_H_ 97
