[feat] add implementation for WGC capture on virtual screens

src/config_center/config_center.cpp

@@ -44,9 +44,6 @@ int ConfigCenter::Load() {
   enable_self_hosted_ =
       ini_.GetBoolValue(section_, "enable_self_hosted", enable_self_hosted_);
 
-  enable_minimize_to_tray_ = ini_.GetBoolValue(
-      section_, "enable_minimize_to_tray", enable_minimize_to_tray_);
-
   return 0;
 }
 
@@ -65,8 +62,6 @@ int ConfigCenter::Save() {
   ini_.SetLongValue(section_, "server_port", static_cast<long>(server_port_));
   ini_.SetValue(section_, "cert_file_path", cert_file_path_.c_str());
   ini_.SetBoolValue(section_, "enable_self_hosted", enable_self_hosted_);
-  ini_.SetBoolValue(section_, "enable_minimize_to_tray",
-                    enable_minimize_to_tray_);
 
   SI_Error rc = ini_.SaveFile(config_path_.c_str());
   if (rc < 0) {
@@ -191,11 +186,6 @@ int ConfigCenter::SetSelfHosted(bool enable_self_hosted) {
   return 0;
 }
 
-int ConfigCenter::SetMinimizeToTray(bool enable_minimize_to_tray) {
-  enable_minimize_to_tray_ = enable_minimize_to_tray;
-  return 0;
-}
-
 // getters
 
 ConfigCenter::LANGUAGE ConfigCenter::GetLanguage() const { return language_; }
@@ -237,5 +227,3 @@ std::string ConfigCenter::GetDefaultCertFilePath() const {
 }
 
 bool ConfigCenter::IsSelfHosted() const { return enable_self_hosted_; }
-
-bool ConfigCenter::IsMinimizeToTray() const { return enable_minimize_to_tray_; }

src/config_center/config_center.h

@@ -36,7 +36,6 @@ class ConfigCenter {
   int SetServerPort(int server_port);
   int SetCertFilePath(const std::string& cert_file_path);
   int SetSelfHosted(bool enable_self_hosted);
-  int SetMinimizeToTray(bool enable_minimize_to_tray);
 
   // read config
 
@@ -54,7 +53,6 @@ class ConfigCenter {
   int GetDefaultServerPort() const;
   std::string GetDefaultCertFilePath() const;
   bool IsSelfHosted() const;
-  bool IsMinimizeToTray() const;
 
   int Load();
   int Save();
@@ -78,7 +76,6 @@ class ConfigCenter {
   int server_port_default_ = 9099;
   std::string cert_file_path_default_ = "";
   bool enable_self_hosted_ = false;
-  bool enable_minimize_to_tray_ = false;
 };
 
 #endif

src/gui/assets/layouts/layout.h

@@ -20,8 +20,8 @@
 #define INPUT_WINDOW_PADDING_EN 96
 #define SETTINGS_WINDOW_WIDTH_CN 202
 #define SETTINGS_WINDOW_WIDTH_EN 248
-#define SETTINGS_WINDOW_HEIGHT_CN 345
-#define SETTINGS_WINDOW_HEIGHT_EN 345
+#define SETTINGS_WINDOW_HEIGHT_CN 315
+#define SETTINGS_WINDOW_HEIGHT_EN 315
 #define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_CN 228
 #define SELF_HOSTED_SERVER_CONFIG_WINDOW_WIDTH_EN 275
 #define SELF_HOSTED_SERVER_CONFIG_WINDOW_HEIGHT_CN 165
@@ -42,8 +42,6 @@
 #define ENABLE_SRTP_CHECKBOX_PADDING_EN 218
 #define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_CN 171
 #define ENABLE_SELF_HOSTED_SERVER_CHECKBOX_PADDING_EN 218
-#define ENABLE_MINIZE_TO_TRAY_PADDING_CN 171
-#define ENABLE_MINIZE_TO_TRAY_PADDING_EN 218
 #define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_CN 90
 #define SELF_HOSTED_SERVER_HOST_INPUT_BOX_PADDING_EN 137
 #define SELF_HOSTED_SERVER_PORT_INPUT_BOX_PADDING_CN 90

src/gui/assets/localization/localization.h

@@ -8,10 +8,6 @@
 
 #include <string>
 #include <vector>
-
-#if _WIN32
-#include <Windows.h>
-#endif
 namespace localization {
 
 static std::vector<std::string> local_desktop = {
@@ -159,12 +155,6 @@ static std::vector<std::string> version = {
 static std::vector<std::string> confirm_delete_connection = {
     reinterpret_cast<const char*>(u8"确认删除此连接"),
     "Confirm to delete this connection"};
-#if _WIN32
-
-static std::vector<std::string> minimize_to_tray = {
-    reinterpret_cast<const char*>(u8"退出时最小化到系统托盘:"),
-    "Minimize to system tray when exit:"};
-static std::vector<LPCWSTR> exit_program = {L"退出", L"Exit"};
-#endif
 }  // namespace localization
+
 #endif

src/gui/render.cpp

@@ -588,17 +588,6 @@ int Render::CreateMainWindow() {
   // for window region action
   SDL_SetWindowHitTest(main_window_, HitTestCallback, this);
 
-#if _WIN32
-  SDL_PropertiesID props = SDL_GetWindowProperties(main_window_);
-  HWND main_hwnd = (HWND)SDL_GetPointerProperty(
-      props, SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
-
-  HICON tray_icon = (HICON)LoadImageW(NULL, L"crossdesk.ico", IMAGE_ICON, 0, 0,
-                                      LR_LOADFROMFILE | LR_DEFAULTSIZE);
-  tray_ = std::make_unique<WinTray>(main_hwnd, tray_icon, L"CrossDesk",
-                                    localization_language_index_);
-#endif
-
   return 0;
 }
 
@@ -979,14 +968,6 @@ void Render::MainLoop() {
       ProcessSdlEvent(event);
     }
 
-#if _WIN32
-    MSG msg;
-    while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
-      TranslateMessage(&msg);
-      DispatchMessage(&msg);
-    }
-#endif
-
     UpdateLabels();
     HandleRecentConnections();
     HandleStreamWindow();

src/gui/render.h

@@ -29,9 +29,6 @@
 #include "screen_capturer_factory.h"
 #include "speaker_capturer_factory.h"
 #include "thumbnail.h"
-#if _WIN32
-#include "win_tray.h"
-#endif
 
 class Render {
  public:
@@ -301,9 +298,6 @@ class Render {
   ImGuiContext* main_ctx_ = nullptr;
   bool exit_ = false;
   const int sdl_refresh_ms_ = 16;  // ~60 FPS
-#if _WIN32
-  std::unique_ptr<WinTray> tray_;
-#endif
 
   // main window properties
   bool start_mouse_controller_ = false;
@@ -450,8 +444,6 @@ class Render {
   bool enable_hardware_video_codec_last_ = false;
   bool enable_turn_last_ = false;
   bool enable_srtp_last_ = false;
-  bool enable_minimize_to_tray_ = false;
-  bool enable_minimize_to_tray_last_ = false;
   char signal_server_ip_tmp_[256] = "api.crossdesk.cn";
   char signal_server_port_tmp_[6] = "9099";
   bool settings_window_pos_reset_ = true;

src/gui/toolbars/title_bar.cpp

@@ -139,17 +139,9 @@ int Render::TitleBar(bool main_window) {
     float xmark_size = 12.0f;
     std::string close_button = "##xmark";  // ICON_FA_XMARK;
     if (ImGui::Button(close_button.c_str(), ImVec2(BUTTON_PADDING, 30))) {
-#if _WIN32
-      if (enable_minimize_to_tray_) {
-        tray_->MinimizeToTray();
-      } else {
-#endif
       SDL_Event event;
       event.type = SDL_EVENT_QUIT;
       SDL_PushEvent(&event);
-#if _WIN32
-      }
-#endif
     }
     draw_list->AddLine(ImVec2(xmark_pos_x - xmark_size / 2 - 0.25f,
                               xmark_pos_y - xmark_size / 2 + 0.75f),

src/gui/tray/win_tray.cpp

@@ -1,112 +0,0 @@
-#include "win_tray.h"
-
-#include <SDL3/SDL.h>
-
-#include "localization.h"
-
-// callback for the message-only window that handles tray icon messages
-static LRESULT CALLBACK MsgWndProc(HWND hwnd, UINT msg, WPARAM wParam,
-                                   LPARAM lParam) {
-  WinTray* tray =
-      reinterpret_cast<WinTray*>(GetWindowLongPtr(hwnd, GWLP_USERDATA));
-  if (!tray) {
-    return DefWindowProc(hwnd, msg, wParam, lParam);
-  }
-
-  if (msg == WM_TRAY_CALLBACK) {
-    MSG tmpMsg = {};
-    tmpMsg.message = msg;
-    tmpMsg.wParam = wParam;
-    tmpMsg.lParam = lParam;
-    tray->HandleTrayMessage(&tmpMsg);
-    return 0;
-  }
-
-  return DefWindowProc(hwnd, msg, wParam, lParam);
-}
-
-WinTray::WinTray(HWND app_hwnd, HICON icon, const std::wstring& tooltip,
-                 int language_index)
-    : app_hwnd_(app_hwnd),
-      icon_(icon),
-      tip_(tooltip),
-      hwnd_message_only_(nullptr),
-      language_index_(language_index) {
-  WNDCLASS wc = {};
-  wc.lpfnWndProc = MsgWndProc;
-  wc.hInstance = GetModuleHandle(nullptr);
-  wc.lpszClassName = L"TrayMessageWindow";
-  RegisterClass(&wc);
-
-  // create a message-only window to receive tray messages
-  hwnd_message_only_ =
-      CreateWindowEx(0, wc.lpszClassName, L"TrayMsg", 0, 0, 0, 0, 0,
-                     HWND_MESSAGE, nullptr, wc.hInstance, nullptr);
-
-  // store pointer to this WinTray instance in window data
-  SetWindowLongPtr(hwnd_message_only_, GWLP_USERDATA,
-                   reinterpret_cast<LONG_PTR>(this));
-
-  // initialize NOTIFYICONDATA structure
-  ZeroMemory(&nid_, sizeof(nid_));
-  nid_.cbSize = sizeof(nid_);
-  nid_.hWnd = hwnd_message_only_;
-  nid_.uID = 1;
-  nid_.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
-  nid_.uCallbackMessage = WM_TRAY_CALLBACK;
-  nid_.hIcon = icon_;
-  wcsncpy_s(nid_.szTip, tip_.c_str(), _TRUNCATE);
-}
-
-WinTray::~WinTray() {
-  RemoveTrayIcon();
-  if (hwnd_message_only_) DestroyWindow(hwnd_message_only_);
-}
-
-void WinTray::MinimizeToTray() {
-  Shell_NotifyIcon(NIM_ADD, &nid_);
-  // hide application window
-  ShowWindow(app_hwnd_, SW_HIDE);
-}
-
-void WinTray::RemoveTrayIcon() { Shell_NotifyIcon(NIM_DELETE, &nid_); }
-
-bool WinTray::HandleTrayMessage(MSG* msg) {
-  if (!msg || msg->message != WM_TRAY_CALLBACK) return false;
-
-  switch (LOWORD(msg->lParam)) {
-    case WM_LBUTTONDBLCLK:
-    case WM_LBUTTONUP: {
-      ShowWindow(app_hwnd_, SW_SHOW);
-      SetForegroundWindow(app_hwnd_);
-      break;
-    }
-
-    case WM_RBUTTONUP: {
-      POINT pt;
-      GetCursorPos(&pt);
-      HMENU menu = CreatePopupMenu();
-      AppendMenuW(menu, MF_STRING, 1001,
-                  localization::exit_program[language_index_]);
-
-      SetForegroundWindow(hwnd_message_only_);
-      int cmd =
-          TrackPopupMenu(menu, TPM_RETURNCMD | TPM_NONOTIFY | TPM_LEFTALIGN,
-                         pt.x, pt.y, 0, hwnd_message_only_, nullptr);
-      DestroyMenu(menu);
-
-      // handle menu command
-      if (cmd == 1001) {
-        // exit application
-        SDL_Event event;
-        event.type = SDL_EVENT_QUIT;
-        SDL_PushEvent(&event);
-      } else if (cmd == 1002) {
-        ShowWindow(app_hwnd_, SW_SHOW);  // show main window
-        SetForegroundWindow(app_hwnd_);
-      }
-      break;
-    }
-  }
-  return true;
-}

src/gui/tray/win_tray.h

@@ -1,36 +0,0 @@
-/*
- * @Author: DI JUNKUN
- * @Date: 2025-10-22
- * Copyright (c) 2025 by DI JUNKUN, All Rights Reserved.
- */
-
-#ifndef _WIN_TRAY_H_
-#define _WIN_TRAY_H_
-
-#include <Windows.h>
-#include <shellapi.h>
-
-#include <string>
-
-#define WM_TRAY_CALLBACK (WM_USER + 1)
-
-class WinTray {
- public:
-  WinTray(HWND app_hwnd, HICON icon, const std::wstring& tooltip,
-          int language_index);
-  ~WinTray();
-
-  void MinimizeToTray();
-  void RemoveTrayIcon();
-  bool HandleTrayMessage(MSG* msg);
-
- private:
-  HWND app_hwnd_;
-  HWND hwnd_message_only_;
-  HICON icon_;
-  std::wstring tip_;
-  int language_index_;
-  NOTIFYICONDATA nid_;
-};
-
-#endif

src/gui/windows/main_settings_window.cpp

@@ -57,7 +57,7 @@ int Render::SettingWindow() {
             localization::language_en[localization_language_index_].c_str()};
 
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text(
             "%s", localization::language[localization_language_index_].c_str());
         if (ConfigCenter::LANGUAGE::CHINESE == localization_language_) {
@@ -88,7 +88,7 @@ int Render::SettingWindow() {
                 .c_str()};
 
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text(
             "%s",
             localization::video_quality[localization_language_index_].c_str());
@@ -111,7 +111,7 @@ int Render::SettingWindow() {
         const char* video_frame_rate_items[] = {"30 fps", "60 fps"};
 
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text("%s",
                     localization::video_frame_rate[localization_language_index_]
                         .c_str());
@@ -137,7 +137,7 @@ int Render::SettingWindow() {
             localization::av1[localization_language_index_].c_str()};
 
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text(
             "%s",
             localization::video_encode_format[localization_language_index_]
@@ -160,7 +160,7 @@ int Render::SettingWindow() {
 
       {
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text("%s", localization::enable_hardware_video_codec
                               [localization_language_index_]
                                   .c_str());
@@ -179,7 +179,7 @@ int Render::SettingWindow() {
 
       {
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text(
             "%s",
             localization::enable_turn[localization_language_index_].c_str());
@@ -197,7 +197,7 @@ int Render::SettingWindow() {
 
       {
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
         ImGui::Text(
             "%s",
             localization::enable_srtp[localization_language_index_].c_str());
@@ -215,7 +215,7 @@ int Render::SettingWindow() {
 
       {
         settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 1);
+        ImGui::SetCursorPosY(settings_items_offset + 2);
 
         if (ImGui::Button(localization::self_hosted_server_config
                               [localization_language_index_]
@@ -232,27 +232,7 @@ int Render::SettingWindow() {
         ImGui::Checkbox("##enable_self_hosted_server",
                         &enable_self_hosted_server_);
       }
-#if _WIN32
-      ImGui::Separator();
 
-      {
-        settings_items_offset += settings_items_padding;
-        ImGui::SetCursorPosY(settings_items_offset + 4);
-
-        ImGui::Text("%s",
-                    localization::minimize_to_tray[localization_language_index_]
-                        .c_str());
-
-        if (ConfigCenter::LANGUAGE::CHINESE == localization_language_) {
-          ImGui::SetCursorPosX(ENABLE_MINIZE_TO_TRAY_PADDING_CN);
-        } else {
-          ImGui::SetCursorPosX(ENABLE_MINIZE_TO_TRAY_PADDING_EN);
-        }
-        ImGui::SetCursorPosY(settings_items_offset);
-        ImGui::Checkbox("##enable_minimize_to_tray_",
-                        &enable_minimize_to_tray_);
-      }
-#endif
       if (stream_window_inited_) {
         ImGui::EndDisabled();
       }

src/gui/windows/server_settings_window.cpp

@@ -43,12 +43,7 @@ int Render::ShowSimpleFileBrowser() {
         localization::select_a_file[localization_language_index_].c_str();
   }
 
-  // 设置固定宽度
-  // ImGui::SetNextItemWidth(SELF_HOSTED_SERVER_INPUT_WINDOW_WIDTH);
-
-  ImGui::PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);  // 禁用自动关闭
   if (ImGui::BeginCombo("##select_a_file", display_text.c_str())) {
-    bool file_selected = false;
     if (selected_current_file_path_ == "Root" ||
         !std::filesystem::exists(selected_current_file_path_) ||
         !std::filesystem::is_directory(selected_current_file_path_)) {
@@ -82,7 +77,6 @@ int Render::ShowSimpleFileBrowser() {
           } else {
             if (ImGui::Selectable(name.c_str())) {
               selected_file_ = entry.path().string();
-              file_selected = true;  // 记录选中文件
             }
           }
         }
@@ -91,14 +85,8 @@ int Render::ShowSimpleFileBrowser() {
       }
     }
 
-    // 如果选中了文件，则自动关闭下拉框
-    if (file_selected) {
-      ImGui::EndCombo();  // 关闭下拉框
-    } else {
-      ImGui::EndCombo();  // 保持下拉框开启
+    ImGui::EndCombo();
   }
-  }
-  ImGui::PopItemFlag();  // 恢复默认行为
 
   return 0;
 }

src/screen_capturer/windows/screen_capturer_wgc.cpp.bak

@@ -12,7 +12,7 @@
 
 static std::vector<DisplayInfo> gs_display_list;
 
-std::string WideToUtf8(const wchar_t *wideStr) {
+std::string WideToUtf8(const wchar_t* wideStr) {
   int size_needed = WideCharToMultiByte(CP_UTF8, 0, wideStr, -1, nullptr, 0,
                                         nullptr, nullptr);
   std::string result(size_needed, 0);
@@ -31,14 +31,14 @@ BOOL WINAPI EnumMonitorProc(HMONITOR hmonitor, [[maybe_unused]] HDC hdc,
     if (monitor_info_.dwFlags & MONITORINFOF_PRIMARY) {
       gs_display_list.insert(
           gs_display_list.begin(),
-          {(void *)hmonitor, WideToUtf8(monitor_info_.szDevice),
+          {(void*)hmonitor, WideToUtf8(monitor_info_.szDevice),
            (monitor_info_.dwFlags & MONITORINFOF_PRIMARY) ? true : false,
            monitor_info_.rcMonitor.left, monitor_info_.rcMonitor.top,
            monitor_info_.rcMonitor.right, monitor_info_.rcMonitor.bottom});
-      *(HMONITOR *)data = hmonitor;
+      *(HMONITOR*)data = hmonitor;
     } else {
       gs_display_list.push_back(DisplayInfo(
-          (void *)hmonitor, WideToUtf8(monitor_info_.szDevice),
+          (void*)hmonitor, WideToUtf8(monitor_info_.szDevice),
           (monitor_info_.dwFlags & MONITORINFOF_PRIMARY) ? true : false,
           monitor_info_.rcMonitor.left, monitor_info_.rcMonitor.top,
           monitor_info_.rcMonitor.right, monitor_info_.rcMonitor.bottom));
@@ -81,7 +81,7 @@ bool ScreenCapturerWgc::IsWgcSupported() {
     /* no contract for IGraphicsCaptureItemInterop, verify 10.0.18362.0 */
     return winrt::Windows::Foundation::Metadata::ApiInformation::
         IsApiContractPresent(L"Windows.Foundation.UniversalApiContract", 8);
-  } catch (const winrt::hresult_error &) {
+  } catch (const winrt::hresult_error&) {
     return false;
   } catch (...) {
     return false;
@@ -115,7 +115,7 @@ int ScreenCapturerWgc::Init(const int fps, cb_desktop_data cb) {
   }
 
   for (int i = 0; i < display_info_list_.size(); i++) {
-    const auto &display = display_info_list_[i];
+    const auto& display = display_info_list_[i];
     LOG_INFO(
         "index: {}, display name: {}, is primary: {}, bounds: ({}, {}) - "
         "({}, {})",
@@ -243,26 +243,28 @@ int ScreenCapturerWgc::SwitchTo(int monitor_index) {
   return 0;
 }
 
-void ScreenCapturerWgc::OnFrame(const WgcSession::wgc_session_frame &frame,
+void ScreenCapturerWgc::OnFrame(const WgcSession::wgc_session_frame& frame,
                                 int id) {
-  if (on_data_) {
+  if (!on_data_) {
+    return;
+  }
+
   if (!nv12_frame_) {
     nv12_frame_ = new unsigned char[frame.width * frame.height * 3 / 2];
   }
 
-    libyuv::ARGBToNV12((const uint8_t *)frame.data, frame.width * 4,
-                       (uint8_t *)nv12_frame_, frame.width,
-                       (uint8_t *)(nv12_frame_ + frame.width * frame.height),
+  libyuv::ARGBToNV12((const uint8_t*)frame.data, frame.width * 4,
+                     (uint8_t*)nv12_frame_, frame.width,
+                     (uint8_t*)(nv12_frame_ + frame.width * frame.height),
                      frame.width, frame.width, frame.height);
 
   on_data_(nv12_frame_, frame.width * frame.height * 3 / 2, frame.width,
            frame.height, display_info_list_[id].name.c_str());
-  }
 }
 
 void ScreenCapturerWgc::CleanUp() {
   if (inited_) {
-    for (auto &session : sessions_) {
+    for (auto& session : sessions_) {
       if (session.session_) {
         session.session_->Stop();
       }

src/screen_capturer/windows/screen_capturer_wgc.h

@@ -43,6 +43,8 @@ class ScreenCapturerWgc : public ScreenCapturer,
   std::vector<DisplayInfo> display_info_list_;
   int monitor_index_ = 0;
 
+  HWND hwnd_ = nullptr;
+
  private:
   class WgcSessionInfo {
    public:
@@ -63,6 +65,9 @@ class ScreenCapturerWgc : public ScreenCapturer,
 
   unsigned char* nv12_frame_ = nullptr;
   unsigned char* nv12_frame_scaled_ = nullptr;
+
+ private:
+  bool CreateHiddenWindow();
 };
 
 #endif

src/screen_capturer/windows/screen_capturer_wgc.h.bak

@@ -0,0 +1,68 @@
+#ifndef _SCREEN_CAPTURER_WGC_H_
+#define _SCREEN_CAPTURER_WGC_H_
+
+#include <atomic>
+#include <functional>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "screen_capturer.h"
+#include "wgc_session.h"
+#include "wgc_session_impl.h"
+
+class ScreenCapturerWgc : public ScreenCapturer,
+                          public WgcSession::wgc_session_observer {
+ public:
+  ScreenCapturerWgc();
+  ~ScreenCapturerWgc();
+
+ public:
+  bool IsWgcSupported();
+
+  int Init(const int fps, cb_desktop_data cb) override;
+  int Destroy() override;
+  int Start() override;
+  int Stop() override;
+
+  int Pause(int monitor_index) override;
+  int Resume(int monitor_index) override;
+
+  std::vector<DisplayInfo> GetDisplayInfoList() { return display_info_list_; }
+
+  int SwitchTo(int monitor_index);
+
+  void OnFrame(const WgcSession::wgc_session_frame& frame, int id);
+
+ protected:
+  void CleanUp();
+
+ private:
+  HMONITOR monitor_;
+  MONITORINFOEX monitor_info_;
+  std::vector<DisplayInfo> display_info_list_;
+  int monitor_index_ = 0;
+
+ private:
+  class WgcSessionInfo {
+   public:
+    std::unique_ptr<WgcSession> session_;
+    bool inited_ = false;
+    bool running_ = false;
+    bool paused_ = false;
+  };
+
+  std::vector<WgcSessionInfo> sessions_;
+
+  std::atomic_bool running_;
+  std::atomic_bool inited_;
+
+  int fps_ = 60;
+
+  cb_desktop_data on_data_ = nullptr;
+
+  unsigned char* nv12_frame_ = nullptr;
+  unsigned char* nv12_frame_scaled_ = nullptr;
+};
+
+#endif

src/screen_capturer/windows/screen_capturer_wgc_warp.cpp

@@ -0,0 +1,187 @@
+#include <Windows.h>
+#include <d3d11_4.h>
+
+#include <iostream>
+#include <thread>
+
+#include "libyuv.h"
+#include "rd_log.h"
+#include "screen_capturer_wgc.h"
+
+// Dummy window proc for hidden window
+static LRESULT CALLBACK DummyWndProc(HWND hwnd, UINT msg, WPARAM wParam,
+                                     LPARAM lParam) {
+  return DefWindowProc(hwnd, msg, wParam, lParam);
+}
+
+// ======================= 构造函数 / 析构函数 =======================
+ScreenCapturerWgc::ScreenCapturerWgc()
+    : monitor_(nullptr),
+      hwnd_(nullptr),
+      monitor_index_(0),
+      running_(false),
+      inited_(false),
+      fps_(60),
+      on_data_(nullptr),
+      nv12_frame_(nullptr),
+      nv12_frame_scaled_(nullptr) {}
+
+ScreenCapturerWgc::~ScreenCapturerWgc() {
+  Stop();
+  CleanUp();
+
+  if (nv12_frame_) {
+    delete[] nv12_frame_;
+    nv12_frame_ = nullptr;
+  }
+
+  if (nv12_frame_scaled_) {
+    delete[] nv12_frame_scaled_;
+    nv12_frame_scaled_ = nullptr;
+  }
+}
+
+// ======================= 隐藏窗口创建 =======================
+bool ScreenCapturerWgc::CreateHiddenWindow() {
+  const wchar_t kClassName[] = L"ScreenCapturerHiddenWindow";
+
+  WNDCLASSW wc = {};
+  wc.lpfnWndProc = DummyWndProc;
+  wc.hInstance = GetModuleHandle(nullptr);
+  wc.lpszClassName = kClassName;
+
+  if (!RegisterClassW(&wc)) {
+    std::cerr << "Failed to register dummy window class\n";
+    return false;
+  }
+
+  hwnd_ = CreateWindowW(kClassName, L"", WS_OVERLAPPEDWINDOW, 0, 0, 1, 1,
+                        nullptr, nullptr, wc.hInstance, nullptr);
+  if (!hwnd_) {
+    std::cerr << "Failed to create dummy window\n";
+    return false;
+  }
+
+  ShowWindow(hwnd_, SW_HIDE);
+  return true;
+}
+
+// ======================= 初始化 =======================
+int ScreenCapturerWgc::Init(const int fps, cb_desktop_data cb) {
+  if (inited_) return 0;
+
+  fps_ = fps;
+  on_data_ = cb;
+
+  // 创建隐藏窗口
+  if (!CreateHiddenWindow()) {
+    return -1;
+  }
+
+  // 初始化 WGC Session
+  sessions_.push_back(
+      {std::make_unique<WgcSessionImpl>(0), false, false, false});
+  sessions_.back().session_->RegisterObserver(this);
+  int error = sessions_.back().session_->Initialize(hwnd_);
+  if (error != 0) {
+    std::cerr << "WGC session init failed\n";
+    return error;
+  }
+  sessions_[0].inited_ = true;
+
+  inited_ = true;
+  return 0;
+}
+
+int ScreenCapturerWgc::Destroy() {
+  Stop();
+  CleanUp();
+  return 0;
+}
+
+int ScreenCapturerWgc::Pause(int monitor_index) {
+  // 目前只支持隐藏窗口，所以忽略 monitor_index
+  if (!running_) return -1;
+  sessions_[0].session_->Pause();
+  sessions_[0].paused_ = true;
+  return 0;
+}
+
+int ScreenCapturerWgc::Resume(int monitor_index) {
+  if (!running_) return -1;
+  sessions_[0].session_->Resume();
+  sessions_[0].paused_ = false;
+  return 0;
+}
+
+int ScreenCapturerWgc::SwitchTo(int monitor_index) {
+  // 单隐藏窗口模式，不支持切换
+  return 0;
+}
+
+// ======================= 开始 =======================
+int ScreenCapturerWgc::Start() {
+  if (!inited_) return -1;
+  if (running_) return 0;
+  if (sessions_.empty()) return -1;
+
+  sessions_[0].session_->Start();
+  sessions_[0].running_ = true;
+  running_ = true;
+
+  return 0;
+}
+
+// ======================= 停止 =======================
+int ScreenCapturerWgc::Stop() {
+  if (!running_) return 0;
+
+  if (!sessions_.empty()) {
+    sessions_[0].session_->Stop();
+    sessions_[0].running_ = false;
+  }
+
+  running_ = false;
+
+  if (hwnd_) {
+    DestroyWindow(hwnd_);
+    hwnd_ = nullptr;
+  }
+
+  inited_ = false;
+  sessions_.clear();
+
+  return 0;
+}
+
+// ======================= 帧回调 =======================
+void ScreenCapturerWgc::OnFrame(const WgcSession::wgc_session_frame& frame,
+                                int id) {
+  if (!on_data_) {
+    return;
+  }
+
+  if (!nv12_frame_) {
+    nv12_frame_ = new unsigned char[frame.width * frame.height * 3 / 2];
+  }
+
+  libyuv::ARGBToNV12((const uint8_t*)frame.data, frame.width * 4,
+                     (uint8_t*)nv12_frame_, frame.width,
+                     (uint8_t*)(nv12_frame_ + frame.width * frame.height),
+                     frame.width, frame.width, frame.height);
+
+  on_data_(nv12_frame_, frame.width * frame.height * 3 / 2, frame.width,
+           frame.height, "hidden_window");
+}
+
+// ======================= 清理 =======================
+void ScreenCapturerWgc::CleanUp() {
+  if (inited_) {
+    for (auto& session : sessions_) {
+      if (session.session_) {
+        session.session_->Stop();
+      }
+    }
+    sessions_.clear();
+  }
+}

src/screen_capturer/windows/wgc_session_impl.cpp

@@ -7,6 +7,8 @@
 #include <iostream>
 #include <memory>
 
+#include "rd_log.h"
+
 #define CHECK_INIT                            \
   if (!is_initialized_) {                     \
     std::cout << "AE_NEED_INIT" << std::endl; \
@@ -20,49 +22,53 @@
 
 extern "C" {
 HRESULT __stdcall CreateDirect3D11DeviceFromDXGIDevice(
-    ::IDXGIDevice *dxgiDevice, ::IInspectable **graphicsDevice);
+    ::IDXGIDevice* dxgiDevice, ::IInspectable** graphicsDevice);
 }
 
 WgcSessionImpl::WgcSessionImpl(int id) : id_(id) {}
 
 WgcSessionImpl::~WgcSessionImpl() {
+  try {
     Stop();
     CleanUp();
+  } catch (...) {
+  }
 }
 
 void WgcSessionImpl::Release() { delete this; }
 
 int WgcSessionImpl::Initialize(HWND hwnd) {
-  std::lock_guard locker(lock_);
-
+  std::scoped_lock locker(lock_);
   target_.hwnd = hwnd;
   target_.is_window = true;
   return Initialize();
 }
 
 int WgcSessionImpl::Initialize(HMONITOR hmonitor) {
-  std::lock_guard locker(lock_);
-
+  std::scoped_lock locker(lock_);
   target_.hmonitor = hmonitor;
   target_.is_window = false;
   return Initialize();
 }
 
-void WgcSessionImpl::RegisterObserver(wgc_session_observer *observer) {
-  std::lock_guard locker(lock_);
+void WgcSessionImpl::RegisterObserver(wgc_session_observer* observer) {
+  std::scoped_lock locker(lock_);
   observer_ = observer;
 }
 
 int WgcSessionImpl::Start() {
-  std::lock_guard locker(lock_);
+  std::scoped_lock locker(lock_);
+  CHECK_INIT;
 
   if (is_running_) return 0;
 
-  int error = 1;
-
-  CHECK_INIT;
   try {
-    if (!capture_session_) {
+    if (!capture_item_) {
+      std::cout << "AE_NO_CAPTURE_ITEM" << std::endl;
+      LOG_ERROR("No capture item");
+      return 2;
+    }
+
     auto current_size = capture_item_.Size();
     capture_framepool_ =
         winrt::Windows::Graphics::Capture::Direct3D11CaptureFramePool::
@@ -70,72 +76,64 @@ int WgcSessionImpl::Start() {
                                winrt::Windows::Graphics::DirectX::
                                    DirectXPixelFormat::B8G8R8A8UIntNormalized,
                                2, current_size);
+
     capture_session_ = capture_framepool_.CreateCaptureSession(capture_item_);
     capture_frame_size_ = current_size;
+
     capture_framepool_trigger_ = capture_framepool_.FrameArrived(
         winrt::auto_revoke, {this, &WgcSessionImpl::OnFrame});
     capture_close_trigger_ = capture_item_.Closed(
         winrt::auto_revoke, {this, &WgcSessionImpl::OnClosed});
-    }
-
-    if (!capture_framepool_) throw std::exception();
-
-    is_running_ = true;
-
-    // we do not need to crate a thread to enter a message loop coz we use
-    // CreateFreeThreaded instead of Create to create a capture frame pool,
-    // we need to test the performance later
-    // loop_ = std::thread(std::bind(&WgcSessionImpl::message_func, this));
-
-    capture_session_.StartCapture();
 
     capture_session_.IsCursorCaptureEnabled(false);
+    capture_session_.StartCapture();
 
-    error = 0;
-  } catch (winrt::hresult_error) {
-    std::cout << "AE_WGC_CREATE_CAPTURER_FAILED" << std::endl;
+    is_running_ = true;
+    is_paused_ = false;
+    return 0;
+  } catch (winrt::hresult_error const& e) {
+    LOG_ERROR("Create WGC Capture Failed: {}", winrt::to_string(e.message()));
     return 86;
   } catch (...) {
     return 86;
   }
-
-  return error;
 }
 
 int WgcSessionImpl::Stop() {
-  std::lock_guard locker(lock_);
-
+  std::scoped_lock locker(lock_);
   CHECK_INIT;
 
+  if (!is_running_) return 0;
   is_running_ = false;
 
-  // if (loop_.joinable()) loop_.join();
-
+  try {
     if (capture_framepool_trigger_) capture_framepool_trigger_.revoke();
-
+    if (capture_close_trigger_) capture_close_trigger_.revoke();
     if (capture_session_) {
       capture_session_.Close();
       capture_session_ = nullptr;
     }
+    if (capture_framepool_) {
+      capture_framepool_.Close();
+      capture_framepool_ = nullptr;
+    }
+  } catch (...) {
+  }
 
   return 0;
 }
 
 int WgcSessionImpl::Pause() {
-  std::lock_guard locker(lock_);
-
-  is_paused_ = true;
-
+  std::scoped_lock locker(lock_);
   CHECK_INIT;
+  is_paused_ = true;
   return 0;
 }
 
 int WgcSessionImpl::Resume() {
-  std::lock_guard locker(lock_);
-
-  is_paused_ = false;
-
+  std::scoped_lock locker(lock_);
   CHECK_INIT;
+  is_paused_ = false;
   return 0;
 }
 
@@ -143,19 +141,15 @@ auto WgcSessionImpl::CreateD3D11Device() {
   winrt::com_ptr<ID3D11Device> d3d_device;
   HRESULT hr;
 
-  WINRT_ASSERT(!d3d_device);
-
-  D3D_DRIVER_TYPE type = D3D_DRIVER_TYPE_HARDWARE;
   UINT flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
-  hr = D3D11CreateDevice(nullptr, type, nullptr, flags, nullptr, 0,
-                         D3D11_SDK_VERSION, d3d_device.put(), nullptr, nullptr);
+  hr = D3D11CreateDevice(nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, flags,
+                         nullptr, 0, D3D11_SDK_VERSION, d3d_device.put(),
+                         nullptr, nullptr);
 
   if (DXGI_ERROR_UNSUPPORTED == hr) {
-    // change D3D_DRIVER_TYPE
-    type = D3D_DRIVER_TYPE_WARP;
-    hr = D3D11CreateDevice(nullptr, type, nullptr, flags, nullptr, 0,
-                           D3D11_SDK_VERSION, d3d_device.put(), nullptr,
-                           nullptr);
+    hr = D3D11CreateDevice(nullptr, D3D_DRIVER_TYPE_WARP, nullptr, flags,
+                           nullptr, 0, D3D11_SDK_VERSION, d3d_device.put(),
+                           nullptr, nullptr);
   }
 
   winrt::check_hresult(hr);
@@ -168,26 +162,28 @@ auto WgcSessionImpl::CreateD3D11Device() {
 }
 
 auto WgcSessionImpl::CreateCaptureItemForWindow(HWND hwnd) {
-  auto activation_factory = winrt::get_activation_factory<
-      winrt::Windows::Graphics::Capture::GraphicsCaptureItem>();
-  auto interop_factory = activation_factory.as<IGraphicsCaptureItemInterop>();
-  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item = {nullptr};
+  auto interop_factory =
+      winrt::get_activation_factory<
+          winrt::Windows::Graphics::Capture::GraphicsCaptureItem>()
+          .as<IGraphicsCaptureItemInterop>();
+  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item{nullptr};
   interop_factory->CreateForWindow(
       hwnd,
       winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
-      reinterpret_cast<void **>(winrt::put_abi(item)));
+      reinterpret_cast<void**>(winrt::put_abi(item)));
   return item;
 }
 
 auto WgcSessionImpl::CreateCaptureItemForMonitor(HMONITOR hmonitor) {
-  auto activation_factory = winrt::get_activation_factory<
-      winrt::Windows::Graphics::Capture::GraphicsCaptureItem>();
-  auto interop_factory = activation_factory.as<IGraphicsCaptureItemInterop>();
-  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item = {nullptr};
+  auto interop_factory =
+      winrt::get_activation_factory<
+          winrt::Windows::Graphics::Capture::GraphicsCaptureItem>()
+          .as<IGraphicsCaptureItemInterop>();
+  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item{nullptr};
   interop_factory->CreateForMonitor(
       hmonitor,
       winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
-      reinterpret_cast<void **>(winrt::put_abi(item)));
+      reinterpret_cast<void**>(winrt::put_abi(item)));
   return item;
 }
 
@@ -196,13 +192,10 @@ HRESULT WgcSessionImpl::CreateMappedTexture(
     unsigned int height) {
   D3D11_TEXTURE2D_DESC src_desc;
   src_texture->GetDesc(&src_desc);
-  D3D11_TEXTURE2D_DESC map_desc;
-  map_desc.Width = width == 0 ? src_desc.Width : width;
-  map_desc.Height = height == 0 ? src_desc.Height : height;
-  map_desc.MipLevels = src_desc.MipLevels;
-  map_desc.ArraySize = src_desc.ArraySize;
-  map_desc.Format = src_desc.Format;
-  map_desc.SampleDesc = src_desc.SampleDesc;
+
+  D3D11_TEXTURE2D_DESC map_desc = src_desc;
+  map_desc.Width = width ? width : src_desc.Width;
+  map_desc.Height = height ? height : src_desc.Height;
   map_desc.Usage = D3D11_USAGE_STAGING;
   map_desc.BindFlags = 0;
   map_desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
@@ -216,163 +209,101 @@ HRESULT WgcSessionImpl::CreateMappedTexture(
 }
 
 void WgcSessionImpl::OnFrame(
-    winrt::Windows::Graphics::Capture::Direct3D11CaptureFramePool const &sender,
-    [[maybe_unused]] winrt::Windows::Foundation::IInspectable const &args) {
-  std::lock_guard locker(lock_);
+    winrt::Windows::Graphics::Capture::Direct3D11CaptureFramePool const& sender,
+    [[maybe_unused]] winrt::Windows::Foundation::IInspectable const& args) {
+  if (!is_running_ || is_paused_) return;
+  std::scoped_lock locker(lock_);
 
-  auto is_new_size = false;
+  if (!observer_) return;
 
-  {
   auto frame = sender.TryGetNextFrame();
+  if (!frame) return;
+
   auto frame_size = frame.ContentSize();
-
-    if (frame_size.Width != capture_frame_size_.Width ||
-        frame_size.Height != capture_frame_size_.Height) {
-      // The thing we have been capturing has changed size.
-      // We need to resize our swap chain first, then blit the pixels.
-      // After we do that, retire the frame and then recreate our frame pool.
-      is_new_size = true;
+  bool size_changed = (frame_size.Width != capture_frame_size_.Width ||
+                       frame_size.Height != capture_frame_size_.Height);
+  if (size_changed) {
     capture_frame_size_ = frame_size;
-    }
-
-    // copy to mapped texture
-    {
-      if (is_paused_) {
-        return;
-      }
-
-      auto frame_captured =
-          GetDXGIInterfaceFromObject<ID3D11Texture2D>(frame.Surface());
-
-      if (!d3d11_texture_mapped_ || is_new_size)
-        CreateMappedTexture(frame_captured);
-
-      d3d11_device_context_->CopyResource(d3d11_texture_mapped_.get(),
-                                          frame_captured.get());
-
-      D3D11_MAPPED_SUBRESOURCE map_result;
-      HRESULT hr = d3d11_device_context_->Map(
-          d3d11_texture_mapped_.get(), 0, D3D11_MAP_READ,
-          0 /*coz we use CreateFreeThreaded, so we cant use flags
-               D3D11_MAP_FLAG_DO_NOT_WAIT*/
-          ,
-          &map_result);
-      if (FAILED(hr)) {
-        OutputDebugStringW(
-            (L"map resource failed: " + std::to_wstring(hr)).c_str());
-      }
-
-      // copy data from map_result.pData
-      if (map_result.pData && observer_) {
-        observer_->OnFrame(
-            wgc_session_frame{static_cast<unsigned int>(frame_size.Width),
-                              static_cast<unsigned int>(frame_size.Height),
-                              map_result.RowPitch,
-                              const_cast<const unsigned char *>(
-                                  (unsigned char *)map_result.pData)},
-            id_);
-      }
-
-      d3d11_device_context_->Unmap(d3d11_texture_mapped_.get(), 0);
-    }
-  }
-
-  if (is_new_size) {
     capture_framepool_.Recreate(d3d11_direct_device_,
                                 winrt::Windows::Graphics::DirectX::
                                     DirectXPixelFormat::B8G8R8A8UIntNormalized,
                                 2, capture_frame_size_);
   }
+
+  auto frame_surface =
+      GetDXGIInterfaceFromObject<ID3D11Texture2D>(frame.Surface());
+
+  if (!d3d11_texture_mapped_ || size_changed)
+    CreateMappedTexture(frame_surface, frame_size.Width, frame_size.Height);
+
+  d3d11_device_context_->CopyResource(d3d11_texture_mapped_.get(),
+                                      frame_surface.get());
+
+  D3D11_MAPPED_SUBRESOURCE map_result;
+  HRESULT hr = d3d11_device_context_->Map(d3d11_texture_mapped_.get(), 0,
+                                          D3D11_MAP_READ, 0, &map_result);
+  if (SUCCEEDED(hr)) {
+    wgc_session_frame frame_info{
+        static_cast<unsigned int>(frame_size.Width),
+        static_cast<unsigned int>(frame_size.Height), map_result.RowPitch,
+        reinterpret_cast<const unsigned char*>(map_result.pData)};
+    observer_->OnFrame(frame_info, id_);
+    d3d11_device_context_->Unmap(d3d11_texture_mapped_.get(), 0);
+  }
 }
 
 void WgcSessionImpl::OnClosed(
-    winrt::Windows::Graphics::Capture::GraphicsCaptureItem const &,
-    winrt::Windows::Foundation::IInspectable const &) {
+    winrt::Windows::Graphics::Capture::GraphicsCaptureItem const&,
+    winrt::Windows::Foundation::IInspectable const&) {
   OutputDebugStringW(L"WgcSessionImpl::OnClosed");
+  Stop();
 }
 
 int WgcSessionImpl::Initialize() {
   if (is_initialized_) return 0;
 
-  if (!(d3d11_direct_device_ = CreateD3D11Device())) {
+  d3d11_direct_device_ = CreateD3D11Device();
+  if (!d3d11_direct_device_) {
     std::cout << "AE_D3D_CREATE_DEVICE_FAILED" << std::endl;
     return 1;
   }
 
   try {
-    if (target_.is_window)
-      capture_item_ = CreateCaptureItemForWindow(target_.hwnd);
-    else
-      capture_item_ = CreateCaptureItemForMonitor(target_.hmonitor);
+    capture_item_ = target_.is_window
+                        ? CreateCaptureItemForWindow(target_.hwnd)
+                        : CreateCaptureItemForMonitor(target_.hmonitor);
 
-    // Set up
-    auto d3d11_device =
+    auto d3d_device =
         GetDXGIInterfaceFromObject<ID3D11Device>(d3d11_direct_device_);
-    d3d11_device->GetImmediateContext(d3d11_device_context_.put());
-
-  } catch (winrt::hresult_error) {
-    std::cout << "AE_WGC_CREATE_CAPTURER_FAILED" << std::endl;
-    return 86;
+    d3d_device->GetImmediateContext(d3d11_device_context_.put());
   } catch (...) {
+    LOG_ERROR("AE_WGC_CREATE_CAPTURER_FAILED");
     return 86;
   }
 
   is_initialized_ = true;
-
   return 0;
 }
 
 void WgcSessionImpl::CleanUp() {
-  std::lock_guard locker(lock_);
-
-  auto expected = false;
-  if (cleaned_.compare_exchange_strong(expected, true)) {
-    capture_close_trigger_.revoke();
-    capture_framepool_trigger_.revoke();
+  std::scoped_lock locker(lock_);
+  if (cleaned_.exchange(true)) return;
 
+  try {
+    if (capture_framepool_trigger_) capture_framepool_trigger_.revoke();
+    if (capture_close_trigger_) capture_close_trigger_.revoke();
     if (capture_framepool_) capture_framepool_.Close();
-
     if (capture_session_) capture_session_.Close();
+  } catch (...) {
+  }
 
   capture_framepool_ = nullptr;
   capture_session_ = nullptr;
   capture_item_ = nullptr;
+  d3d11_texture_mapped_ = nullptr;
+  d3d11_device_context_ = nullptr;
+  d3d11_direct_device_ = nullptr;
 
   is_initialized_ = false;
-  }
+  is_running_ = false;
 }
-
-LRESULT CALLBACK WindowProc(HWND window, UINT message, WPARAM w_param,
-                            LPARAM l_param) {
-  return DefWindowProc(window, message, w_param, l_param);
-}
-
-// void WgcSessionImpl::message_func() {
-//   const std::wstring kClassName = L"am_fake_window";
-
-//   WNDCLASS wc = {};
-
-//   wc.style = CS_HREDRAW | CS_VREDRAW;
-//   wc.lpfnWndProc = DefWindowProc;
-//   wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
-//   wc.hbrBackground = reinterpret_cast<HBRUSH>(COLOR_WINDOW);
-//   wc.lpszClassName = kClassName.c_str();
-
-//   if (!::RegisterClassW(&wc)) return;
-
-//   hwnd_ = ::CreateWindowW(kClassName.c_str(), nullptr, WS_OVERLAPPEDWINDOW,
-//   0,
-//                           0, 0, 0, nullptr, nullptr, nullptr, nullptr);
-//   MSG msg;
-//   while (is_running_) {
-//     while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
-//       if (!is_running_) break;
-//       TranslateMessage(&msg);
-//       DispatchMessage(&msg);
-//     }
-//     Sleep(10);
-//   }
-
-//   ::CloseWindow(hwnd_);
-//   ::DestroyWindow(hwnd_);
-// }

src/screen_capturer/windows/wgc_session_impl.cpp.bak

@@ -0,0 +1,380 @@
+#include "wgc_session_impl.h"
+
+#include <Windows.Graphics.Capture.Interop.h>
+
+#include <atomic>
+#include <functional>
+#include <iostream>
+#include <memory>
+
+#include "rd_log.h"
+
+#define CHECK_INIT                            \
+  if (!is_initialized_) {                     \
+    std::cout << "AE_NEED_INIT" << std::endl; \
+    return 4;                                 \
+  }
+
+#define CHECK_CLOSED                         \
+  if (cleaned_.load() == true) {             \
+    throw winrt::hresult_error(RO_E_CLOSED); \
+  }
+
+extern "C" {
+HRESULT __stdcall CreateDirect3D11DeviceFromDXGIDevice(
+    ::IDXGIDevice* dxgiDevice, ::IInspectable** graphicsDevice);
+}
+
+WgcSessionImpl::WgcSessionImpl(int id) : id_(id) {}
+
+WgcSessionImpl::~WgcSessionImpl() {
+  Stop();
+  CleanUp();
+}
+
+void WgcSessionImpl::Release() { delete this; }
+
+int WgcSessionImpl::Initialize(HWND hwnd) {
+  std::lock_guard locker(lock_);
+
+  target_.hwnd = hwnd;
+  target_.is_window = true;
+  return Initialize();
+}
+
+int WgcSessionImpl::Initialize(HMONITOR hmonitor) {
+  std::lock_guard locker(lock_);
+
+  target_.hmonitor = hmonitor;
+  target_.is_window = false;
+  return Initialize();
+}
+
+void WgcSessionImpl::RegisterObserver(wgc_session_observer* observer) {
+  std::lock_guard locker(lock_);
+  observer_ = observer;
+}
+
+int WgcSessionImpl::Start() {
+  std::lock_guard locker(lock_);
+
+  if (is_running_) return 0;
+
+  int error = 1;
+
+  CHECK_INIT;
+  try {
+    if (!capture_session_) {
+      auto current_size = capture_item_.Size();
+      capture_framepool_ =
+          winrt::Windows::Graphics::Capture::Direct3D11CaptureFramePool::
+              CreateFreeThreaded(d3d11_direct_device_,
+                                 winrt::Windows::Graphics::DirectX::
+                                     DirectXPixelFormat::B8G8R8A8UIntNormalized,
+                                 2, current_size);
+      capture_session_ = capture_framepool_.CreateCaptureSession(capture_item_);
+      capture_frame_size_ = current_size;
+      capture_framepool_trigger_ = capture_framepool_.FrameArrived(
+          winrt::auto_revoke, {this, &WgcSessionImpl::OnFrame});
+      capture_close_trigger_ = capture_item_.Closed(
+          winrt::auto_revoke, {this, &WgcSessionImpl::OnClosed});
+    }
+
+    if (!capture_framepool_) throw std::exception();
+
+    is_running_ = true;
+
+    // we do not need to crate a thread to enter a message loop coz we use
+    // CreateFreeThreaded instead of Create to create a capture frame pool,
+    // we need to test the performance later
+    // loop_ = std::thread(std::bind(&WgcSessionImpl::message_func, this));
+
+    capture_session_.StartCapture();
+
+    capture_session_.IsCursorCaptureEnabled(false);
+
+    error = 0;
+  } catch (winrt::hresult_error) {
+    LOG_ERROR("Create WGC Capture Failed");
+    return 86;
+  } catch (...) {
+    return 86;
+  }
+
+  return error;
+}
+
+int WgcSessionImpl::Stop() {
+  std::lock_guard locker(lock_);
+
+  CHECK_INIT;
+
+  is_running_ = false;
+
+  // if (loop_.joinable()) loop_.join();
+
+  if (capture_framepool_trigger_) capture_framepool_trigger_.revoke();
+
+  if (capture_session_) {
+    capture_session_.Close();
+    capture_session_ = nullptr;
+  }
+
+  return 0;
+}
+
+int WgcSessionImpl::Pause() {
+  std::lock_guard locker(lock_);
+
+  is_paused_ = true;
+
+  CHECK_INIT;
+  return 0;
+}
+
+int WgcSessionImpl::Resume() {
+  std::lock_guard locker(lock_);
+
+  is_paused_ = false;
+
+  CHECK_INIT;
+  return 0;
+}
+
+auto WgcSessionImpl::CreateD3D11Device() {
+  winrt::com_ptr<ID3D11Device> d3d_device;
+  HRESULT hr;
+
+  WINRT_ASSERT(!d3d_device);
+
+  D3D_DRIVER_TYPE type = D3D_DRIVER_TYPE_HARDWARE;
+  UINT flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
+  hr = D3D11CreateDevice(nullptr, type, nullptr, flags, nullptr, 0,
+                         D3D11_SDK_VERSION, d3d_device.put(), nullptr, nullptr);
+
+  if (DXGI_ERROR_UNSUPPORTED == hr) {
+    // change D3D_DRIVER_TYPE
+    type = D3D_DRIVER_TYPE_WARP;
+    hr = D3D11CreateDevice(nullptr, type, nullptr, flags, nullptr, 0,
+                           D3D11_SDK_VERSION, d3d_device.put(), nullptr,
+                           nullptr);
+  }
+
+  winrt::check_hresult(hr);
+
+  winrt::com_ptr<::IInspectable> d3d11_device;
+  winrt::check_hresult(CreateDirect3D11DeviceFromDXGIDevice(
+      d3d_device.as<IDXGIDevice>().get(), d3d11_device.put()));
+  return d3d11_device
+      .as<winrt::Windows::Graphics::DirectX::Direct3D11::IDirect3DDevice>();
+}
+
+auto WgcSessionImpl::CreateCaptureItemForWindow(HWND hwnd) {
+  auto activation_factory = winrt::get_activation_factory<
+      winrt::Windows::Graphics::Capture::GraphicsCaptureItem>();
+  auto interop_factory = activation_factory.as<IGraphicsCaptureItemInterop>();
+  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item = {nullptr};
+  interop_factory->CreateForWindow(
+      hwnd,
+      winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
+      reinterpret_cast<void**>(winrt::put_abi(item)));
+  return item;
+}
+
+auto WgcSessionImpl::CreateCaptureItemForMonitor(HMONITOR hmonitor) {
+  auto activation_factory = winrt::get_activation_factory<
+      winrt::Windows::Graphics::Capture::GraphicsCaptureItem>();
+  auto interop_factory = activation_factory.as<IGraphicsCaptureItemInterop>();
+  winrt::Windows::Graphics::Capture::GraphicsCaptureItem item = {nullptr};
+  interop_factory->CreateForMonitor(
+      hmonitor,
+      winrt::guid_of<ABI::Windows::Graphics::Capture::IGraphicsCaptureItem>(),
+      reinterpret_cast<void**>(winrt::put_abi(item)));
+  return item;
+}
+
+HRESULT WgcSessionImpl::CreateMappedTexture(
+    winrt::com_ptr<ID3D11Texture2D> src_texture, unsigned int width,
+    unsigned int height) {
+  D3D11_TEXTURE2D_DESC src_desc;
+  src_texture->GetDesc(&src_desc);
+  D3D11_TEXTURE2D_DESC map_desc;
+  map_desc.Width = width == 0 ? src_desc.Width : width;
+  map_desc.Height = height == 0 ? src_desc.Height : height;
+  map_desc.MipLevels = src_desc.MipLevels;
+  map_desc.ArraySize = src_desc.ArraySize;
+  map_desc.Format = src_desc.Format;
+  map_desc.SampleDesc = src_desc.SampleDesc;
+  map_desc.Usage = D3D11_USAGE_STAGING;
+  map_desc.BindFlags = 0;
+  map_desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
+  map_desc.MiscFlags = 0;
+
+  auto d3dDevice =
+      GetDXGIInterfaceFromObject<ID3D11Device>(d3d11_direct_device_);
+
+  return d3dDevice->CreateTexture2D(&map_desc, nullptr,
+                                    d3d11_texture_mapped_.put());
+}
+
+void WgcSessionImpl::OnFrame(
+    winrt::Windows::Graphics::Capture::Direct3D11CaptureFramePool const& sender,
+    [[maybe_unused]] winrt::Windows::Foundation::IInspectable const& args) {
+  std::lock_guard locker(lock_);
+
+  auto is_new_size = false;
+
+  {
+    auto frame = sender.TryGetNextFrame();
+    auto frame_size = frame.ContentSize();
+
+    if (frame_size.Width != capture_frame_size_.Width ||
+        frame_size.Height != capture_frame_size_.Height) {
+      // The thing we have been capturing has changed size.
+      // We need to resize our swap chain first, then blit the pixels.
+      // After we do that, retire the frame and then recreate our frame pool.
+      is_new_size = true;
+      capture_frame_size_ = frame_size;
+    }
+
+    // copy to mapped texture
+    {
+      if (is_paused_) {
+        return;
+      }
+
+      auto frame_captured =
+          GetDXGIInterfaceFromObject<ID3D11Texture2D>(frame.Surface());
+
+      if (!d3d11_texture_mapped_ || is_new_size)
+        CreateMappedTexture(frame_captured);
+
+      d3d11_device_context_->CopyResource(d3d11_texture_mapped_.get(),
+                                          frame_captured.get());
+
+      D3D11_MAPPED_SUBRESOURCE map_result;
+      HRESULT hr = d3d11_device_context_->Map(
+          d3d11_texture_mapped_.get(), 0, D3D11_MAP_READ,
+          0 /*coz we use CreateFreeThreaded, so we cant use flags
+               D3D11_MAP_FLAG_DO_NOT_WAIT*/
+          ,
+          &map_result);
+      if (FAILED(hr)) {
+        OutputDebugStringW(
+            (L"map resource failed: " + std::to_wstring(hr)).c_str());
+      }
+
+      // copy data from map_result.pData
+      if (map_result.pData && observer_) {
+        observer_->OnFrame(
+            wgc_session_frame{static_cast<unsigned int>(frame_size.Width),
+                              static_cast<unsigned int>(frame_size.Height),
+                              map_result.RowPitch,
+                              const_cast<const unsigned char*>(
+                                  (unsigned char*)map_result.pData)},
+            id_);
+      }
+
+      d3d11_device_context_->Unmap(d3d11_texture_mapped_.get(), 0);
+    }
+  }
+
+  if (is_new_size) {
+    capture_framepool_.Recreate(d3d11_direct_device_,
+                                winrt::Windows::Graphics::DirectX::
+                                    DirectXPixelFormat::B8G8R8A8UIntNormalized,
+                                2, capture_frame_size_);
+  }
+}
+
+void WgcSessionImpl::OnClosed(
+    winrt::Windows::Graphics::Capture::GraphicsCaptureItem const&,
+    winrt::Windows::Foundation::IInspectable const&) {
+  OutputDebugStringW(L"WgcSessionImpl::OnClosed");
+}
+
+int WgcSessionImpl::Initialize() {
+  if (is_initialized_) return 0;
+
+  if (!(d3d11_direct_device_ = CreateD3D11Device())) {
+    std::cout << "AE_D3D_CREATE_DEVICE_FAILED" << std::endl;
+    return 1;
+  }
+
+  try {
+    if (target_.is_window)
+      capture_item_ = CreateCaptureItemForWindow(target_.hwnd);
+    else
+      capture_item_ = CreateCaptureItemForMonitor(target_.hmonitor);
+
+    // Set up
+    auto d3d11_device =
+        GetDXGIInterfaceFromObject<ID3D11Device>(d3d11_direct_device_);
+    d3d11_device->GetImmediateContext(d3d11_device_context_.put());
+
+  } catch (winrt::hresult_error) {
+    LOG_ERROR("AE_WGC_CREATE_CAPTURER_FAILED");
+    return 86;
+  } catch (...) {
+    return 86;
+  }
+
+  is_initialized_ = true;
+
+  return 0;
+}
+
+void WgcSessionImpl::CleanUp() {
+  std::lock_guard locker(lock_);
+
+  auto expected = false;
+  if (cleaned_.compare_exchange_strong(expected, true)) {
+    capture_close_trigger_.revoke();
+    capture_framepool_trigger_.revoke();
+
+    if (capture_framepool_) capture_framepool_.Close();
+
+    if (capture_session_) capture_session_.Close();
+
+    capture_framepool_ = nullptr;
+    capture_session_ = nullptr;
+    capture_item_ = nullptr;
+
+    is_initialized_ = false;
+  }
+}
+
+LRESULT CALLBACK WindowProc(HWND window, UINT message, WPARAM w_param,
+                            LPARAM l_param) {
+  return DefWindowProc(window, message, w_param, l_param);
+}
+
+// void WgcSessionImpl::message_func() {
+//   const std::wstring kClassName = L"am_fake_window";
+
+//   WNDCLASS wc = {};
+
+//   wc.style = CS_HREDRAW | CS_VREDRAW;
+//   wc.lpfnWndProc = DefWindowProc;
+//   wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
+//   wc.hbrBackground = reinterpret_cast<HBRUSH>(COLOR_WINDOW);
+//   wc.lpszClassName = kClassName.c_str();
+
+//   if (!::RegisterClassW(&wc)) return;
+
+//   hwnd_ = ::CreateWindowW(kClassName.c_str(), nullptr, WS_OVERLAPPEDWINDOW,
+//   0,
+//                           0, 0, 0, nullptr, nullptr, nullptr, nullptr);
+//   MSG msg;
+//   while (is_running_) {
+//     while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
+//       if (!is_running_) break;
+//       TranslateMessage(&msg);
+//       DispatchMessage(&msg);
+//     }
+//     Sleep(10);
+//   }
+
+//   ::CloseWindow(hwnd_);
+//   ::DestroyWindow(hwnd_);
+// }

xmake.lua

@@ -150,10 +150,6 @@ target("gui")
         "src/gui/windows/*.cpp")
     add_includedirs("src/gui", "src/gui/panels", "src/gui/toolbars", 
         "src/gui/windows", {public = true})
-    if is_os("windows") then
-        add_files("src/gui/tray/*.cpp")
-        add_includedirs("src/gui/tray", {public = true})
-    end
 
 target("crossdesk")
     set_kind("binary")