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[idd] transport: abstract LGMP implementation

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Introduce transport, frame, and control interfaces with an LGMP factory
backend.

Move LGMP and IVSHMEM implementation details under transport/lgmp and
expose direct frame-buffer memory through a neutral capability.
This commit is contained in:
Geoffrey McRae
2026-08-07 16:39:07 +10:00
parent 30a1383d5e
commit 6725133375
46 changed files with 1026 additions and 480 deletions
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46
idd/LGIdd/display/device/CDeviceContext.h
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@@ -25,17 +25,15 @@
#include <IddCx.h>
#include <atomic>
#include <memory>
#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"
#include "transport/ITransport.h"
class CDeviceContext
class CDeviceContext : private ITransportEvents
{
private:
WDFDEVICE m_wdfDevice;
@@ -43,20 +41,17 @@ private:
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;
// At boot the selected transport may not be available yet. The retry timer
// and atomic gate keep adapter creation single-threaded until it is ready.
WDFTIMER m_initTimer = nullptr;
bool m_transportOpened = 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;
std::unique_ptr<ITransport> m_transport;
CDisplayConfiguration m_displayConfiguration;
CMonitorManager m_monitorManager;
WDFTIMER m_lgmpTimer = nullptr;
WDFTIMER m_transportTimer = nullptr;
UINT m_iddCxVersion = 0;
bool m_hasIddCx110DDIs = false;
@@ -68,8 +63,10 @@ private:
void ScheduleInitRetry();
void StopInitRetry();
bool InitializeLGMP();
void LGMPTimer();
bool InitializeTransport();
void TransportTimer();
void OnSetCursorPos(int32_t x, int32_t y) override;
void OnSetResolution(uint32_t width, uint32_t height) override;
void SetResolution(uint32_t width, uint32_t height);
public:
@@ -79,7 +76,7 @@ public:
CDeviceContext(const CDeviceContext&) = delete;
CDeviceContext& operator=(const CDeviceContext&) = delete;
bool SetupLGMP(size_t alignSize);
bool SetupTransport(size_t alignSize);
void InitAdapter();
void FinishAdapterInit(UINT connectorIndex);
@@ -96,14 +93,9 @@ public:
bool CanProcessFP16 () const { return m_canProcessFP16; }
bool IsSoftwareMode () const { return m_softwareMode; }
CFrameTransport& GetFrameTransport()
ITransport& GetTransport()
{
return m_frameTransport;
}
CLGMPControl& GetLGMPControl()
{
return m_lgmpControl;
return *m_transport;
}
CDisplayConfiguration& GetDisplayConfiguration()