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 EnumerateDevices0_2( 33 PP_Resource* devices, 34 scoped_refptr<TrackedCallback> callback) OVERRIDE; 35 virtual int32_t EnumerateDevices( 36 const PP_ArrayOutput& output, 37 scoped_refptr<TrackedCallback> callback) OVERRIDE; 38 virtual int32_t MonitorDeviceChange( 39 PP_MonitorDeviceChangeCallback callback, 40 void* user_data) OVERRIDE; 41 virtual int32_t Open(const std::string& device_id, 42 const PP_VideoCaptureDeviceInfo_Dev& requested_info, 43 uint32_t buffer_count, 44 scoped_refptr<TrackedCallback> callback) OVERRIDE; 45 virtual int32_t StartCapture() OVERRIDE; 46 virtual int32_t ReuseBuffer(uint32_t buffer) OVERRIDE; 47 virtual int32_t StopCapture() OVERRIDE; 48 virtual void Close() OVERRIDE; 49 virtual int32_t EnumerateDevicesSync(const PP_ArrayOutput& devices) OVERRIDE; 50 51 protected: 52 // Resource override. 53 virtual void LastPluginRefWasDeleted() OVERRIDE; 54 55 private: 56 enum OpenState { 57 BEFORE_OPEN, 58 OPENED, 59 CLOSED 60 }; 61 62 // PluginResource overrides. 63 virtual void OnReplyReceived(const ResourceMessageReplyParams& params, 64 const IPC::Message& msg) OVERRIDE; 65 66 void OnPluginMsgOnDeviceInfo(const ResourceMessageReplyParams& params, 67 const struct PP_VideoCaptureDeviceInfo_Dev& info, 68 const std::vector<HostResource>& buffers, 69 uint32_t buffer_size); 70 void OnPluginMsgOnStatus(const ResourceMessageReplyParams& params, 71 uint32_t status); 72 void OnPluginMsgOnError(const ResourceMessageReplyParams& params, 73 uint32_t error); 74 void OnPluginMsgOnBufferReady(const ResourceMessageReplyParams& params, 75 uint32_t buffer); 76 77 void OnPluginMsgOpenReply(const ResourceMessageReplyParams& params); 78 79 void SetBufferInUse(uint32_t buffer_index); 80 81 // Points to the C interface of client implementation. 82 const PPP_VideoCapture_Dev* ppp_video_capture_impl_; 83 84 // Indicates that the i-th buffer is currently in use. 85 std::vector<bool> buffer_in_use_; 86 87 // Holds a reference of the callback so that Close() can cancel it. 88 scoped_refptr<TrackedCallback> open_callback_; 89 OpenState open_state_; 90 91 DeviceEnumerationResourceHelper enumeration_helper_; 92 93 DISALLOW_COPY_AND_ASSIGN(VideoCaptureResource); 94 }; 95 96 } // namespace proxy 97 } // namespace ppapi 98 99 #endif // PPAPI_PROXY_VIDEO_CAPTURE_RESOURCE_H_ 100
