[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/display/device/CDeviceContext.h

@@ -0,0 +1,126 @@
+/**
+ * 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 <IddCx.h>
+
+#include <atomic>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "display/CDisplayConfiguration.h"
+#include "display/CMonitorManager.h"
+#include "transport/CFrameTransport.h"
+#include "transport/CIVSHMEM.h"
+#include "transport/CLGMPControl.h"
+#include "transport/CLGMPHost.h"
+
+class CDeviceContext
+{
+private:
+  WDFDEVICE     m_wdfDevice;
+  IDDCX_ADAPTER m_adapter                    = nullptr;
+  LUID          m_preferredRenderAdapter     = {};
+  bool          m_havePreferredRenderAdapter = false;
+
+  // At boot IVSHMEM may not have enumerated yet. The retry timer and atomic
+  // gate keep adapter creation single-threaded until it becomes available.
+  WDFTIMER          m_initTimer      = nullptr;
+  bool              m_ivshmemOpened  = false;
+  std::atomic<LONG> m_initInProgress = 0;
+
+  CIVSHMEM              m_ivshmem;
+  CLGMPHost             m_lgmpHost;
+  CLGMPControl          m_lgmpControl;
+  CFrameTransport       m_frameTransport;
+  CDisplayConfiguration m_displayConfiguration;
+  CMonitorManager       m_monitorManager;
+
+  WDFTIMER m_lgmpTimer = nullptr;
+
+  UINT m_iddCxVersion    = 0;
+  bool m_hasIddCx110DDIs = false;
+  bool m_canProcessFP16  = false;
+  bool m_softwareMode    = true;
+
+  void QueryIddCxCapabilities();
+
+  void ScheduleInitRetry();
+  void StopInitRetry();
+
+  bool InitializeLGMP();
+  void LGMPTimer();
+  void SetResolution(uint32_t width, uint32_t height);
+
+public:
+  explicit CDeviceContext(_In_ WDFDEVICE wdfDevice);
+  ~CDeviceContext();
+
+  CDeviceContext(const CDeviceContext&) = delete;
+  CDeviceContext& operator=(const CDeviceContext&) = delete;
+
+  bool SetupLGMP(size_t alignSize);
+
+  void InitAdapter();
+  void FinishAdapterInit(UINT connectorIndex);
+  void FinishInit(UINT connectorIndex);
+  void ReloadSettings();
+  void ReplugMonitor();
+
+  void OnMonitorDestroyed(IDDCX_MONITOR monitor);
+  void OnSwapChainAssigned();
+  void OnSwapChainReleased();
+  void OnSwapChainReady();
+
+  bool HasIddCx110DDIs() const { return m_hasIddCx110DDIs; }
+  bool CanProcessFP16 () const { return m_canProcessFP16;  }
+  bool IsSoftwareMode () const { return m_softwareMode;    }
+
+  CFrameTransport& GetFrameTransport()
+  {
+    return m_frameTransport;
+  }
+
+  CLGMPControl& GetLGMPControl()
+  {
+    return m_lgmpControl;
+  }
+
+  CDisplayConfiguration& GetDisplayConfiguration()
+  {
+    return m_displayConfiguration;
+  }
+};
+
+struct CDeviceContextWrapper
+{
+  CDeviceContext * context;
+
+  void Cleanup()
+  {
+    delete context;
+    context = nullptr;
+  }
+};
+
+WDF_DECLARE_CONTEXT_TYPE(CDeviceContextWrapper);