[idd] project: organize driver sources by responsibility

Group the IDD sources and Visual Studio filters by subsystem.

Split the device and swap-chain implementations into focused units,
rename the context classes, and reduce header coupling.

idd/LGIdd/transport/CPipeServer.h

@@ -0,0 +1,76 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#pragma once
+
+#include <windows.h>
+#include <wdf.h>
+#include <stdint.h>
+#include <wrl.h>
+#include <vector>
+
+#include "PipeMsg.h"
+
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace Microsoft::WRL::Wrappers::HandleTraits;
+
+class CDeviceContext;
+
+class CPipeServer
+{
+  private:
+    HandleT<HANDLETraits>     m_pipe;
+    HandleT<HANDLENullTraits> m_thread;
+    HandleT<EventTraits>      m_signal;
+    std::vector<LGPipeMsg>    m_queue;
+
+    bool m_running   = false;
+    bool m_connected = false;
+
+    SRWLOCK          m_deviceContextLock = SRWLOCK_INIT;
+    CDeviceContext * m_deviceContext     = nullptr;
+
+    void _DeInit();
+
+    static DWORD WINAPI _pipeThread(LPVOID lpParam) { ((CPipeServer*)lpParam)->Thread(); return 0; }
+    void Thread();
+
+    void WriteMsg(const LGPipeMsg & msg);
+
+    void HandleReloadSettings();
+
+  public:
+    ~CPipeServer() { DeInit(); }
+
+    bool Init();
+    void DeInit();
+
+    void SetDeviceContext(CDeviceContext * context);
+
+    void SetCursorPos(uint32_t x, uint32_t y);
+    void SetDisplayMode(
+      uint32_t width, uint32_t height, uint32_t refreshMilliHz);
+    void SetGPUStatus(bool software);
+    void ResolutionRejected(uint32_t width, uint32_t height,
+      uint32_t requiredSizeMiB);
+};
+
+extern CPipeServer g_pipe;