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[idd] transport: isolate interactive services

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This commit is contained in:
Geoffrey McRae
2026-08-12 21:49:04 +10:00
parent 51f432db00
commit c92acb0a34
21 changed files with 2026 additions and 401 deletions
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4
idd/LGIdd/LGIdd.vcxproj
View File

@@ -62,6 +62,7 @@
<ClCompile Include="postprocess\effect\CRGB24Effect.cpp" />
<ClCompile Include="transport\CControlHub.cpp" />
<ClCompile Include="transport\CFrameHub.cpp" />
<ClCompile Include="transport\CInputHub.cpp" />
<ClCompile Include="transport\CTransportManager.cpp" />
<ClCompile Include="transport\TransportFactory.cpp" />
<ClCompile Include="transport\lgmp\CIVSHMEM.cpp" />
@@ -111,13 +112,16 @@
<ClInclude Include="postprocess\effect\CRGB24Effect.h" />
<ClInclude Include="transport\CControlHub.h" />
<ClInclude Include="transport\CFrameHub.h" />
<ClInclude Include="transport\CInputHub.h" />
<ClInclude Include="transport\CTransportManager.h" />
<ClInclude Include="transport\DirectFrameBufferMemory.h" />
<ClInclude Include="transport\FrameMemoryLimits.h" />
<ClInclude Include="transport\IControlSink.h" />
<ClInclude Include="transport\IControlTransport.h" />
<ClInclude Include="transport\IFrameSink.h" />
<ClInclude Include="transport\IFrameTransport.h" />
<ClInclude Include="transport\IInputTransport.h" />
<ClInclude Include="transport\IInputSource.h" />
<ClInclude Include="transport\ITransport.h" />
<ClInclude Include="transport\PreparedFrameBuffer.h" />
<ClInclude Include="transport\TransportFactory.h" />

12
idd/LGIdd/LGIdd.vcxproj.filters
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@@ -160,6 +160,9 @@
<ClInclude Include="transport\CFrameHub.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\CInputHub.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\CTransportManager.h">
<Filter>Transport</Filter>
</ClInclude>
@@ -169,6 +172,9 @@
<ClInclude Include="transport\FrameMemoryLimits.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\IControlSink.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\IControlTransport.h">
<Filter>Transport</Filter>
</ClInclude>
@@ -181,6 +187,9 @@
<ClInclude Include="transport\IInputTransport.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\IInputSource.h">
<Filter>Transport</Filter>
</ClInclude>
<ClInclude Include="transport\ITransport.h">
<Filter>Transport</Filter>
</ClInclude>
@@ -309,6 +318,9 @@
<ClCompile Include="transport\CFrameHub.cpp">
<Filter>Transport</Filter>
</ClCompile>
<ClCompile Include="transport\CInputHub.cpp">
<Filter>Transport</Filter>
</ClCompile>
<ClCompile Include="transport\CTransportManager.cpp">
<Filter>Transport</Filter>
</ClCompile>

84
idd/LGIdd/display/CDeviceContext.cpp
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@@ -85,15 +85,21 @@ void CDeviceContext::QueryIddCxCapabilities()
#ifdef HAS_IDDCX_110
const bool hasIddCx110DDIs =
!!IDD_IS_FUNCTION_AVAILABLE(IddCxSwapChainReleaseAndAcquireBuffer2) &&
!!IDD_IS_FUNCTION_AVAILABLE(IddCxMonitorQueryHardwareCursor3) &&
!!IDD_IS_FUNCTION_AVAILABLE(IddCxMonitorUpdateModes2) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxAdapterQueryTargetInfo) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxAdapterCommitModes2) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxParseMonitorDescription2) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorQueryTargetModes2) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorSetDefaultHdrMetaData) &&
IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorSetGammaRamp);
IDD_IS_FUNCTION_AVAILABLE(IddCxSwapChainReleaseAndAcquireBuffer2) &&
IDD_IS_FUNCTION_AVAILABLE(IddCxMonitorQueryHardwareCursor3) &&
IDD_IS_FUNCTION_AVAILABLE(IddCxMonitorUpdateModes2) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxAdapterQueryTargetInfo) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxAdapterCommitModes2) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxParseMonitorDescription2) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorQueryTargetModes2) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorSetDefaultHdrMetaData) &&
IDD_IS_FIELD_AVAILABLE(
IDD_CX_CLIENT_CONFIG, EvtIddCxMonitorSetGammaRamp);
#else
const bool hasIddCx110DDIs = false;
#endif
@@ -474,12 +480,31 @@ bool CDeviceContext::InitializeTransport()
return true;
g_pipe.SetRecoveryHandler(
[](void * opaque, uint64_t session, uint32_t serial, bool active,
LGPipeMsg::Type result)
[](void * opaque, uint64_t route, uint64_t session,
uint32_t serial, bool active, LGPipeMsg::Type result)
{
CDeviceContext * context =
static_cast<CDeviceContext *>(opaque);
SourceKey source;
{
CSRWExclusiveLock routeLock(context->m_recoveryRouteLock);
if (!route || route != context->m_recoveryRoute ||
session != context->m_recoverySession ||
serial != context->m_recoverySerial ||
active != context->m_recoveryActive)
{
DEBUG_WARN("Ignoring stale recovery route");
return;
}
source = context->m_recoverySource;
context->m_recoveryRoute = 0;
context->m_recoverySource = {};
context->m_recoverySession = 0;
context->m_recoverySerial = 0;
context->m_recoveryActive = false;
}
ITransport::Recovery state = ITransport::Recovery::FAILED;
uint32_t error = ERROR_SUCCESS;
switch (result)
@@ -505,7 +530,7 @@ bool CDeviceContext::InitializeTransport()
}
context->m_transport->RecoveryStatus(
session, serial, active, state, error);
source, session, serial, active, state, error);
},
this);
m_recoveryHandlerSet = true;
@@ -563,8 +588,7 @@ bool CDeviceContext::SetupTransport(size_t alignSize)
return false;
}
IInputTransport * input = m_transport->Input();
if (input && !input->Start(g_inputPipeServer))
if (!m_transport->Input().Start(g_inputPipeServer))
{
DEBUG_ERROR("Failed to start input transport");
return false;
@@ -610,6 +634,34 @@ void CDeviceContext::OnSetResolution(const SourceKey& source,
void CDeviceContext::OnRecoveryRequest(const SourceKey& source,
uint64_t session, uint32_t serial, bool active)
{
UNREFERENCED_PARAMETER(source);
g_pipe.SetRecovery(this, session, serial, active);
if (!source.backend || !source.epoch || !session || !serial ||
(serial & LGPipeMsg::RECOVERY_ACTIVE))
return;
CSRWExclusiveLock publishLock(m_recoveryPublishLock);
uint64_t route;
{
CSRWExclusiveLock routeLock(m_recoveryRouteLock);
route = m_nextRecoveryRoute++;
if (!m_nextRecoveryRoute)
++m_nextRecoveryRoute;
m_recoveryRoute = route;
m_recoverySource = source;
m_recoverySession = session;
m_recoverySerial = serial;
m_recoveryActive = active;
}
if (!g_pipe.SetRecovery(this, route, session, serial, active))
{
CSRWExclusiveLock routeLock(m_recoveryRouteLock);
if (m_recoveryRoute != route)
return;
m_recoveryRoute = 0;
m_recoverySource = {};
m_recoverySession = 0;
m_recoverySerial = 0;
m_recoveryActive = false;
}
}

8
idd/LGIdd/display/CDeviceContext.h
View File

@@ -53,6 +53,14 @@ private:
WDFTIMER m_transportTimer = nullptr;
bool m_recoveryHandlerSet = false;
CSRWLock m_recoveryPublishLock;
CSRWLock m_recoveryRouteLock;
uint64_t m_nextRecoveryRoute = 1;
uint64_t m_recoveryRoute = 0;
SourceKey m_recoverySource;
uint64_t m_recoverySession = 0;
uint32_t m_recoverySerial = 0;
bool m_recoveryActive = false;
UINT m_iddCxVersion = 0;
bool m_hasIddCx110DDIs = false;

18
idd/LGIdd/ipc/CPipeServer.cpp
View File

@@ -136,7 +136,7 @@ void CPipeServer::HandleRecovery(const LGPipeMsg & msg)
queueLock.Unlock();
if (m_recoveryHandler)
m_recoveryHandler(m_recoveryOpaque,
msg.recovery.session, serial, active, msg.type);
m_recoveryRoute, msg.recovery.session, serial, active, msg.type);
}
void CPipeServer::SetDeviceContext(CDeviceContext * context)
@@ -150,6 +150,7 @@ void CPipeServer::SetRecoveryHandler(
{
CSRWExclusiveLock queueLock(m_queueLock);
CSRWExclusiveLock recoveryLock(m_recoveryLock);
m_recoveryRoute = 0;
m_recoveryValid = false;
m_recoveryRequest = {};
m_recoveryHandler = handler;
@@ -163,6 +164,7 @@ void CPipeServer::ClearRecoveryHandler(void * opaque)
if (m_recoveryOpaque != opaque)
return;
m_recoveryRoute = 0;
m_recoveryValid = false;
m_recoveryRequest = {};
m_recoveryHandler = nullptr;
@@ -218,14 +220,14 @@ void CPipeServer::ResolutionRejected(uint32_t width, uint32_t height,
WriteMsg(msg);
}
void CPipeServer::SetRecovery(
void * owner, uint64_t session, uint32_t serial, bool active)
bool CPipeServer::SetRecovery(void * owner, uint64_t route,
uint64_t session, uint32_t serial, bool active)
{
if (!session || !serial ||
if (!route || !session || !serial ||
(serial & LGPipeMsg::RECOVERY_ACTIVE))
{
DEBUG_ERROR("Invalid recovery request correlation");
return;
return false;
}
LGPipeMsg msg = {};
@@ -236,11 +238,13 @@ void CPipeServer::SetRecovery(
(active ? LGPipeMsg::RECOVERY_ACTIVE : 0U);
CSRWExclusiveLock queueLock(m_queueLock);
CSRWSharedLock recoveryLock(m_recoveryLock);
CSRWExclusiveLock recoveryLock(m_recoveryLock);
if (!m_recoveryHandler || m_recoveryOpaque != owner)
return;
return false;
m_recoveryValid = true;
m_recoveryRoute = route;
m_recoveryRequest = msg;
m_endpoint.Send(&msg, sizeof(msg));
return true;
}

7
idd/LGIdd/ipc/CPipeServer.h
View File

@@ -35,7 +35,7 @@ class CPipeServer : private IPipeEndpointHandler
{
public:
using RecoveryHandler = void (*)(void * opaque,
uint64_t session, uint32_t serial, bool active,
uint64_t route, uint64_t session, uint32_t serial, bool active,
LGPipeMsg::Type result);
private:
@@ -51,6 +51,7 @@ class CPipeServer : private IPipeEndpointHandler
CSRWLock m_recoveryLock;
RecoveryHandler m_recoveryHandler = nullptr;
void * m_recoveryOpaque = nullptr;
uint64_t m_recoveryRoute = 0;
void WriteMsg(const LGPipeMsg & msg);
void QueueMsgLocked(const LGPipeMsg & msg);
@@ -77,8 +78,8 @@ class CPipeServer : private IPipeEndpointHandler
void SetGPUStatus(bool software);
void ResolutionRejected(uint32_t width, uint32_t height,
uint32_t requiredSizeMiB);
void SetRecovery(
void * owner, uint64_t session, uint32_t serial, bool active);
bool SetRecovery(void * owner, uint64_t route,
uint64_t session, uint32_t serial, bool active);
};
extern CPipeServer g_pipe;

567
idd/LGIdd/transport/CControlHub.cpp
View File

@@ -20,120 +20,529 @@
#include "transport/CControlHub.h"
#include <cstring>
#include <new>
#include <utility>
#include "CDebug.h"
std::vector<std::shared_ptr<CControlHub::Sink>> CControlHub::Snapshot() const
#include <algorithm>
#include <cstring>
CControlHub::CControlHub()
{
CSRWSharedLock lock(m_sinkLock);
return m_sinks;
m_stopEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
if (!m_stopEvent)
return;
m_valid = true;
for (unsigned i = 0; i < MAX_SINKS; ++i)
{
Sink& sink = m_sinks[i];
sink.owner = this;
sink.index = i;
sink.wake = CreateEvent(nullptr, FALSE, FALSE, nullptr);
sink.idle = CreateEvent(nullptr, TRUE, TRUE, nullptr);
if (!sink.wake || !sink.idle)
{
m_valid = false;
break;
}
sink.thread = CreateThread(nullptr, 0, WorkerProc, &sink, 0, nullptr);
if (!sink.thread)
{
m_valid = false;
break;
}
}
if (!m_valid)
{
SetEvent(m_stopEvent);
for (Sink& sink : m_sinks)
if (sink.wake)
SetEvent(sink.wake);
}
}
CControlHub::~CControlHub()
{
for (Sink& sink : m_sinks)
{
BackendId backend;
uint32_t epoch;
{
CSRWSharedLock lock(sink.lock);
backend = sink.backend;
epoch = sink.epoch;
}
if (backend && epoch)
Remove(backend, epoch);
}
if (m_stopEvent)
SetEvent(m_stopEvent);
for (Sink& sink : m_sinks)
if (sink.wake)
SetEvent(sink.wake);
for (Sink& sink : m_sinks)
{
if (sink.thread)
WaitForSingleObject(sink.thread, INFINITE);
if (sink.thread)
CloseHandle(sink.thread);
if (sink.idle)
CloseHandle(sink.idle);
if (sink.wake)
CloseHandle(sink.wake);
}
if (m_stopEvent)
CloseHandle(m_stopEvent);
}
DWORD WINAPI CControlHub::WorkerProc(void * opaque)
{
Sink * sink = static_cast<Sink *>(opaque);
sink->owner->Worker(*sink);
return 0;
}
uint64_t CControlHub::NextRevision(uint64_t revision)
{
++revision;
return revision ? revision : 1;
}
bool CControlHub::TokenMatches(
const Sink& sink, const ControlToken& token)
{
return sink.backend == token.backend && sink.epoch == token.epoch;
}
bool CControlHub::Add(
BackendId backend, uint32_t epoch, IControlTransport& control)
BackendId backend, uint32_t epoch, IControlSink& control)
{
std::shared_ptr<Sink> sink(new (std::nothrow) Sink);
if (!sink)
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
if (!backend || !epoch || !m_valid)
return false;
sink->backend = backend;
sink->epoch = epoch;
sink->control = &control;
Sink * selected = nullptr;
{
CSRWExclusiveLock lock(m_sinkLock);
for (const auto& current : m_sinks)
if (current->backend == backend && current->epoch == epoch)
CSRWExclusiveLock lock(m_listLock);
for (Sink& sink : m_sinks)
{
CSRWSharedLock sinkLock(sink.lock);
if ((sink.active || sink.reserved) &&
sink.backend == backend && sink.epoch == epoch)
return false;
m_sinks.push_back(sink);
}
Replay(sink);
for (Sink& sink : m_sinks)
{
CSRWExclusiveLock sinkLock(sink.lock);
if (!sink.active && !sink.failed && !sink.reserved)
{
sink.reserved = true;
sink.backend = backend;
sink.epoch = epoch;
selected = &sink;
break;
}
}
}
if (!selected)
return false;
const ControlToken token = { backend, epoch };
{
CSRWExclusiveLock lock(selected->lock);
selected->target = &control;
selected->deliveredPosition = 0;
selected->deliveredShape = 0;
selected->deliveredTransform = 0;
memset(selected->retryAt, 0, sizeof(selected->retryAt));
selected->nextWork = 0;
selected->bindingSerial = NextRevision(selected->bindingSerial);
selected->replaySerial = NextRevision(selected->replaySerial);
selected->calling = false;
selected->active = false;
selected->failed = false;
selected->failurePending = false;
}
control.SetControlEvents(this, token);
bool attached = false;
{
CSRWExclusiveLock lock(selected->lock);
if (selected->target == &control && selected->backend == backend &&
selected->epoch == epoch && selected->reserved && !selected->failed)
{
selected->replaySerial = NextRevision(selected->replaySerial);
selected->active = true;
selected->reserved = false;
attached = true;
}
}
if (!attached)
{
control.SetControlEvents(nullptr, {});
SetEvent(selected->wake);
WaitForSingleObject(selected->idle, INFINITE);
CSRWExclusiveLock listLock(m_listLock);
CSRWExclusiveLock sinkLock(selected->lock);
if (selected->target == &control && selected->backend == backend &&
selected->epoch == epoch)
{
selected->target = nullptr;
selected->backend = 0;
selected->epoch = 0;
selected->active = false;
selected->reserved = false;
selected->failed = false;
selected->failurePending = false;
selected->calling = false;
memset(selected->retryAt, 0, sizeof(selected->retryAt));
}
return false;
}
SetEvent(selected->wake);
return true;
}
void CControlHub::Remove(BackendId backend, uint32_t epoch)
{
std::shared_ptr<Sink> removed;
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
Sink * selected = nullptr;
IControlSink * target = nullptr;
{
CSRWExclusiveLock lock(m_sinkLock);
for (auto current = m_sinks.begin(); current != m_sinks.end(); ++current)
if ((*current)->backend == backend && (*current)->epoch == epoch)
CSRWExclusiveLock listLock(m_listLock);
for (Sink& sink : m_sinks)
{
removed = *current;
m_sinks.erase(current);
CSRWExclusiveLock lock(sink.lock);
if ((sink.active || sink.failed) &&
sink.backend == backend && sink.epoch == epoch)
{
sink.active = false;
sink.failed = false;
sink.failurePending = false;
sink.reserved = true;
target = sink.target;
selected = &sink;
break;
}
}
}
if (!selected)
return;
SetEvent(selected->wake);
WaitForSingleObject(selected->idle, INFINITE);
if (target)
target->SetControlEvents(nullptr, {});
{
CSRWExclusiveLock listLock(m_listLock);
CSRWExclusiveLock sinkLock(selected->lock);
if (selected->reserved && selected->backend == backend &&
selected->epoch == epoch)
{
selected->target = nullptr;
selected->backend = 0;
selected->epoch = 0;
selected->reserved = false;
selected->failed = false;
selected->failurePending = false;
selected->calling = false;
memset(selected->retryAt, 0, sizeof(selected->retryAt));
}
}
}
bool CControlHub::TakeFailure(ControlToken& token)
{
CSRWSharedLock lifecycleLock(m_lifecycleLock);
CSRWSharedLock listLock(m_listLock);
for (Sink& sink : m_sinks)
{
CSRWExclusiveLock lock(sink.lock);
if (!sink.failurePending)
continue;
token.backend = sink.backend;
token.epoch = sink.epoch;
sink.failurePending = false;
return true;
}
return false;
}
void CControlHub::OnControlReplay(const ControlToken& token)
{
CSRWSharedLock listLock(m_listLock);
for (Sink& sink : m_sinks)
{
CSRWExclusiveLock lock(sink.lock);
if ((!sink.active && !sink.reserved) ||
!TokenMatches(sink, token))
continue;
sink.deliveredPosition = 0;
sink.deliveredShape = 0;
sink.deliveredTransform = 0;
sink.replaySerial = NextRevision(sink.replaySerial);
memset(sink.retryAt, 0, sizeof(sink.retryAt));
SetEvent(sink.wake);
return;
}
}
bool CControlHub::BeginWork(Sink& sink, Work& work, DWORD& wait)
{
const uint64_t now = GetTickCount64();
State state;
{
CSRWSharedLock lock(m_stateLock);
state.transform = m_state.transform;
state.cursor = m_state.cursor;
state.cursorData = m_state.cursorData;
state.sdrWhiteLevel = m_state.sdrWhiteLevel;
state.positionRevision = m_state.positionRevision;
state.shapeRevision = m_state.shapeRevision;
state.transformRevision = m_state.transformRevision;
}
CSRWExclusiveLock lock(sink.lock);
if (!sink.active || !sink.target)
{
wait = INFINITE;
return false;
}
const bool pending[] =
{
state.positionRevision != sink.deliveredPosition,
state.shapeRevision != sink.deliveredShape,
state.transformRevision != sink.deliveredTransform,
};
unsigned selected = static_cast<unsigned>(WorkType::COUNT);
uint64_t earliest = 0;
for (unsigned offset = 0;
offset < static_cast<unsigned>(WorkType::COUNT); ++offset)
{
const unsigned index =
(sink.nextWork + offset) % static_cast<unsigned>(WorkType::COUNT);
if (!pending[index])
continue;
if (!sink.retryAt[index] || sink.retryAt[index] <= now)
{
selected = index;
break;
}
if (!earliest || sink.retryAt[index] < earliest)
earliest = sink.retryAt[index];
}
if (selected == static_cast<unsigned>(WorkType::COUNT))
{
wait = earliest ? static_cast<DWORD>(std::min<uint64_t>(
earliest - now, MAXDWORD - 1)) : INFINITE;
return false;
}
sink.nextWork =
(selected + 1) % static_cast<unsigned>(WorkType::COUNT);
sink.calling = true;
ResetEvent(sink.idle);
work.type = static_cast<WorkType>(selected);
work.target = sink.target;
work.sdrWhiteLevel = state.sdrWhiteLevel;
work.positionRevision = state.positionRevision;
work.shapeRevision = state.shapeRevision;
work.transformRevision = state.transformRevision;
work.bindingSerial = sink.bindingSerial;
work.replaySerial = sink.replaySerial;
if (work.type == WorkType::TRANSFORM)
work.transform = std::move(state.transform);
else
{
work.cursor.IsCursorVisible = state.cursor.IsCursorVisible;
work.cursor.X = state.cursor.X;
work.cursor.Y = state.cursor.Y;
if (work.type == WorkType::SHAPE)
{
work.cursor.IsCursorShapeUpdated = true;
work.cursor.CursorShapeInfo = state.cursor.CursorShapeInfo;
work.cursorData = std::move(state.cursorData);
}
else
work.cursor.CursorShapeInfo.CursorType =
IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED;
}
wait = INFINITE;
return true;
}
bool CControlHub::CompleteWork(
Sink& sink, const Work& work, ControlResult result)
{
CSRWExclusiveLock lock(sink.lock);
if (sink.target != work.target ||
sink.bindingSerial != work.bindingSerial)
return false;
if (!sink.active)
{
sink.calling = false;
SetEvent(sink.idle);
return false;
}
if (result == ControlResult::FAILED)
{
sink.active = false;
sink.failed = true;
sink.failurePending = true;
sink.calling = false;
SetEvent(sink.idle);
return true;
}
if (sink.replaySerial != work.replaySerial)
{
sink.calling = false;
SetEvent(sink.idle);
return true;
}
const unsigned index = static_cast<unsigned>(work.type);
if (result == ControlResult::RETRY)
sink.retryAt[index] = GetTickCount64() + RETRY_MS;
else
{
sink.retryAt[index] = 0;
switch (work.type)
{
case WorkType::POSITION:
sink.deliveredPosition = work.positionRevision;
break;
case WorkType::SHAPE:
sink.deliveredPosition = work.positionRevision;
sink.deliveredShape = work.shapeRevision;
break;
case WorkType::TRANSFORM:
sink.deliveredTransform = work.transformRevision;
break;
case WorkType::COUNT:
break;
}
}
if (removed)
sink.calling = false;
SetEvent(sink.idle);
return true;
}
void CControlHub::Worker(Sink& sink)
{
DWORD wait = INFINITE;
HANDLE events[] = { m_stopEvent, sink.wake };
for (;;)
{
CSRWExclusiveLock lock(removed->lock);
removed->control = nullptr;
const DWORD status = WaitForMultipleObjects(2, events, FALSE, wait);
if (status == WAIT_OBJECT_0 || status == WAIT_FAILED)
return;
Work work;
if (!BeginWork(sink, work, wait))
continue;
ControlResult result;
if (work.type == WorkType::TRANSFORM)
result = work.target->SetColorTransform(std::move(work.transform));
else
result = work.target->SendCursor(work.cursor,
!work.cursorData || work.cursorData->empty() ? nullptr :
work.cursorData->data(),
work.cursorData ? work.cursorData->size() : 0,
work.sdrWhiteLevel);
const bool completed = CompleteWork(sink, work, result);
if (result == ControlResult::FAILED && completed)
DEBUG_WARN("Control update delivery failed");
if (completed)
{
wait = result == ControlResult::RETRY ? RETRY_MS : 0;
if (result != ControlResult::RETRY)
SetEvent(sink.wake);
}
else
wait = INFINITE;
}
}
void CControlHub::Replay(const std::shared_ptr<Sink>& sink)
void CControlHub::WakeAll(WorkType type)
{
IDARG_OUT_QUERY_HWCURSOR cursor = {};
std::vector<BYTE> cursorData;
UINT sdrWhiteLevel;
bool cursorValid;
std::shared_ptr<const D12ColorTransform> transform;
const unsigned index = static_cast<unsigned>(type);
CSRWSharedLock listLock(m_listLock);
for (Sink& sink : m_sinks)
{
CSRWSharedLock lock(m_stateLock);
cursor = m_cursor;
cursorData = m_cursorData;
sdrWhiteLevel = m_sdrWhiteLevel;
cursorValid = m_cursorValid;
transform = m_colorTransform;
CSRWExclusiveLock lock(sink.lock);
if (!sink.active)
continue;
sink.retryAt[index] = 0;
SetEvent(sink.wake);
}
CSRWSharedLock lock(sink->lock);
if (!sink->control)
return;
sink->control->SetColorTransform(std::move(transform));
if (cursorValid)
sink->control->SendCursor(
cursor, cursorData.empty() ? nullptr : cursorData.data(),
sdrWhiteLevel);
}
void CControlHub::SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, UINT sdrWhiteLevel)
{
const bool shape = info.CursorShapeInfo.CursorType !=
IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED;
std::shared_ptr<std::vector<BYTE>> cursorData;
if (shape)
{
if (info.CursorShapeInfo.Height &&
info.CursorShapeInfo.Pitch >
SIZE_MAX / info.CursorShapeInfo.Height)
{
DEBUG_ERROR("Pointer shape size overflow");
return;
}
const size_t size = static_cast<size_t>(
info.CursorShapeInfo.Height) * info.CursorShapeInfo.Pitch;
if (size && !data)
{
DEBUG_ERROR("Missing pointer shape payload");
return;
}
cursorData = std::make_shared<std::vector<BYTE>>(size);
if (size)
memcpy(cursorData->data(), data, size);
}
{
CSRWExclusiveLock lock(m_stateLock);
m_cursor.IsCursorVisible = info.IsCursorVisible;
m_cursor.X = info.X;
m_cursor.Y = info.Y;
m_cursorValid = true;
m_sdrWhiteLevel = sdrWhiteLevel;
m_state.cursor.IsCursorVisible = info.IsCursorVisible;
m_state.cursor.X = info.X;
m_state.cursor.Y = info.Y;
m_state.sdrWhiteLevel = sdrWhiteLevel;
m_state.positionRevision = NextRevision(m_state.positionRevision);
if (info.CursorShapeInfo.CursorType !=
IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED)
if (shape)
{
const size_t size =
(size_t)info.CursorShapeInfo.Height * info.CursorShapeInfo.Pitch;
m_cursor.IsCursorShapeUpdated = info.IsCursorShapeUpdated;
m_cursor.CursorShapeInfo = info.CursorShapeInfo;
m_cursorData.resize(size);
if (size)
memcpy(m_cursorData.data(), data, size);
m_shapeValid = true;
m_state.cursor.IsCursorShapeUpdated = info.IsCursorShapeUpdated;
m_state.cursor.CursorShapeInfo = info.CursorShapeInfo;
m_state.cursorData = std::move(cursorData);
m_state.shapeRevision = NextRevision(m_state.shapeRevision);
}
else if (!m_shapeValid)
m_cursor.CursorShapeInfo.CursorType =
IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED;
}
const auto sinks = Snapshot();
for (const auto& sink : sinks)
{
CSRWSharedLock lock(sink->lock);
if (sink->control)
sink->control->SendCursor(info, data, sdrWhiteLevel);
}
WakeAll(WorkType::POSITION);
if (shape)
WakeAll(WorkType::SHAPE);
}
void CControlHub::SetColorTransform(
@@ -141,21 +550,15 @@ void CControlHub::SetColorTransform(
{
{
CSRWExclusiveLock lock(m_stateLock);
m_colorTransform = transform;
}
const auto sinks = Snapshot();
for (const auto& sink : sinks)
{
CSRWSharedLock lock(sink->lock);
if (sink->control)
sink->control->SetColorTransform(transform);
m_state.transform = std::move(transform);
m_state.transformRevision = NextRevision(m_state.transformRevision);
}
WakeAll(WorkType::TRANSFORM);
}
std::shared_ptr<const D12ColorTransform>
CControlHub::GetColorTransform() const
{
CSRWSharedLock lock(m_stateLock);
return m_colorTransform;
return m_state.transform;
}

105
idd/LGIdd/transport/CControlHub.h
View File

@@ -21,40 +21,109 @@
#pragma once
#include "CSRWLock.h"
#include "transport/IControlSink.h"
#include "transport/IControlTransport.h"
#include "transport/ITransport.h"
#include <memory>
#include <Windows.h>
#include <stdint.h>
#include <vector>
class CControlHub final : public IControlTransport
class CControlHub final : public IControlTransport, public IControlEvents
{
private:
struct Sink
static constexpr unsigned MAX_SINKS = 8;
static constexpr DWORD RETRY_MS = 5;
enum class WorkType
{
BackendId backend;
uint32_t epoch;
CSRWLock lock;
IControlTransport * control;
POSITION,
SHAPE,
TRANSFORM,
COUNT,
};
mutable CSRWLock m_sinkLock;
std::vector<std::shared_ptr<Sink>> m_sinks;
struct State
{
std::shared_ptr<const D12ColorTransform> transform;
IDARG_OUT_QUERY_HWCURSOR cursor = {};
std::shared_ptr<const std::vector<BYTE>> cursorData;
UINT sdrWhiteLevel = 0;
uint64_t positionRevision = 0;
uint64_t shapeRevision = 0;
uint64_t transformRevision = 1;
};
struct Work
{
WorkType type = WorkType::POSITION;
IControlSink * target = nullptr;
IDARG_OUT_QUERY_HWCURSOR cursor = {};
std::shared_ptr<const std::vector<BYTE>> cursorData;
std::shared_ptr<const D12ColorTransform> transform;
UINT sdrWhiteLevel = 0;
uint64_t positionRevision = 0;
uint64_t shapeRevision = 0;
uint64_t transformRevision = 0;
uint64_t bindingSerial = 0;
uint64_t replaySerial = 0;
};
struct Sink
{
CControlHub * owner = nullptr;
unsigned index = 0;
BackendId backend = 0;
uint32_t epoch = 0;
CSRWLock lock;
IControlSink * target = nullptr;
HANDLE wake = nullptr;
HANDLE idle = nullptr;
HANDLE thread = nullptr;
uint64_t deliveredPosition = 0;
uint64_t deliveredShape = 0;
uint64_t deliveredTransform = 0;
uint64_t retryAt[static_cast<unsigned>(WorkType::COUNT)] = {};
unsigned nextWork = 0;
uint64_t bindingSerial = 0;
uint64_t replaySerial = 0;
bool active = false;
bool failed = false;
bool failurePending = false;
bool reserved = false;
bool calling = false;
};
mutable CSRWLock m_listLock;
mutable CSRWLock m_stateLock;
std::shared_ptr<const D12ColorTransform> m_colorTransform;
IDARG_OUT_QUERY_HWCURSOR m_cursor = {};
std::vector<BYTE> m_cursorData;
UINT m_sdrWhiteLevel = 0;
bool m_cursorValid = false;
bool m_shapeValid = false;
CSRWLock m_lifecycleLock;
State m_state;
Sink m_sinks[MAX_SINKS];
HANDLE m_stopEvent = nullptr;
bool m_valid = false;
std::vector<std::shared_ptr<Sink>> Snapshot() const;
void Replay(const std::shared_ptr<Sink>& sink);
static DWORD WINAPI WorkerProc(void * opaque);
static uint64_t NextRevision(uint64_t revision);
static bool TokenMatches(const Sink& sink, const ControlToken& token);
bool BeginWork(Sink& sink, Work& work, DWORD& wait);
bool CompleteWork(Sink& sink, const Work& work, ControlResult result);
void Worker(Sink& sink);
void WakeAll(WorkType type);
public:
bool Add(BackendId backend, uint32_t epoch, IControlTransport& control);
CControlHub();
~CControlHub() override;
CControlHub(const CControlHub&) = delete;
CControlHub& operator=(const CControlHub&) = delete;
bool Add(BackendId backend, uint32_t epoch, IControlSink& control);
void Remove(BackendId backend, uint32_t epoch);
bool TakeFailure(ControlToken& token);
void OnControlReplay(const ControlToken& token) override;
void SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, UINT sdrWhiteLevel) override;

586
idd/LGIdd/transport/CInputHub.cpp Normal file
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@@ -0,0 +1,586 @@
/**
* 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
*/
#include "transport/CInputHub.h"
#include "input/IInputSink.h"
static bool SameSource(const SourceKey& left, const SourceKey& right)
{
return left.backend == right.backend && left.epoch == right.epoch &&
left.client == right.client && left.generation == right.generation;
}
CInputHub::CInputHub()
{
for (Source& source : m_sources)
source.owner = this;
}
CInputHub::~CInputHub()
{
Stop();
for (Source& source : m_sources)
{
BackendId backend;
uint32_t epoch;
{
CSRWSharedLock lock(m_lock);
backend = source.backend;
epoch = source.epoch;
}
if (backend && epoch)
Unbind(backend, epoch);
}
}
SourceKey CInputHub::Source::Key(const InputSourceId& sourceId) const
{
SourceKey source;
source.backend = backend;
source.epoch = epoch;
source.client = sourceId.client;
source.generation = sourceId.generation;
return source;
}
InputTargetState CInputHub::Source::GetState(
const InputSourceId& source)
{
return owner->GetState(Key(source));
}
void CInputHub::Source::Failed()
{
owner->Failed(*this);
}
InputResult CInputHub::Source::Claim(const InputSourceId& source)
{
return owner->Claim(Key(source));
}
InputResult CInputHub::Source::Touch(const InputSourceId& source)
{
return owner->Touch(Key(source));
}
InputResult CInputHub::Source::Release(
const InputSourceId& source, bool reset)
{
return owner->Release(Key(source), reset);
}
InputResult CInputHub::Source::SendMouseRelative(
const InputSourceId& source,
int32_t deltaX, int32_t deltaY, int32_t wheel, uint32_t buttons)
{
return owner->SendMouseRelative(
Key(source), deltaX, deltaY, wheel, buttons);
}
InputResult CInputHub::Source::SendMouseAbsolute(
const InputSourceId& source,
uint16_t x, uint16_t y, int32_t wheel, uint32_t buttons)
{
return owner->SendMouseAbsolute(Key(source), x, y, wheel, buttons);
}
InputResult CInputHub::Source::SendKeyboard(const InputSourceId& source,
uint8_t modifiers, const uint8_t * keys)
{
return owner->SendKeyboard(Key(source), modifiers, keys);
}
InputResult CInputHub::Source::Reset(const InputSourceId& source)
{
return owner->Reset(Key(source));
}
bool CInputHub::Bind(
BackendId backend, uint32_t epoch, IInputSource& input)
{
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
if (!backend || !epoch)
return false;
Source * selected = nullptr;
bool start = false;
{
CSRWExclusiveLock lock(m_lock);
for (Source& source : m_sources)
if ((source.active || source.failed || source.reserved) &&
source.backend == backend && source.epoch == epoch)
return false;
for (Source& source : m_sources)
if (!source.active && !source.failed && !source.reserved)
{
source.backend = backend;
source.epoch = epoch;
source.endpoint = &input;
source.active = true;
source.reserved = true;
selected = &source;
start = m_started;
break;
}
}
if (!selected)
return false;
if (start && !input.Start(*selected))
{
input.Stop();
CSRWExclusiveLock lock(m_lock);
if (selected->reserved && selected->endpoint == &input &&
selected->backend == backend && selected->epoch == epoch)
{
selected->backend = 0;
selected->epoch = 0;
selected->endpoint = nullptr;
selected->running = false;
selected->active = false;
selected->failed = false;
selected->failurePending = false;
selected->reserved = false;
}
return false;
}
{
CSRWExclusiveLock lock(m_lock);
if (!selected->reserved || selected->endpoint != &input ||
selected->backend != backend || selected->epoch != epoch ||
selected->failed)
{
lock.Unlock();
if (start)
input.Stop();
{
CSRWExclusiveLock clearLock(m_lock);
if (selected->endpoint == &input &&
selected->backend == backend && selected->epoch == epoch)
{
selected->backend = 0;
selected->epoch = 0;
selected->endpoint = nullptr;
selected->running = false;
selected->active = false;
selected->failed = false;
selected->failurePending = false;
selected->reserved = false;
}
}
return false;
}
selected->running = start;
selected->reserved = false;
}
return true;
}
void CInputHub::Unbind(BackendId backend, uint32_t epoch)
{
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
Source * selected = nullptr;
IInputSource * input = nullptr;
bool stop = false;
{
CSRWExclusiveLock lock(m_lock);
for (Source& source : m_sources)
if ((source.active || source.failed || source.reserved) &&
source.backend == backend && source.epoch == epoch)
{
source.active = false;
source.failed = false;
source.failurePending = false;
source.reserved = true;
input = source.endpoint;
stop = source.running;
source.running = false;
selected = &source;
if (m_owner.backend == backend && m_owner.epoch == epoch)
{
if (m_sink)
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
}
break;
}
}
if (!selected)
return;
if (input && stop)
input->Stop();
CSRWExclusiveLock lock(m_lock);
if (selected->reserved && selected->backend == backend &&
selected->epoch == epoch)
{
selected->backend = 0;
selected->epoch = 0;
selected->endpoint = nullptr;
selected->running = false;
selected->reserved = false;
selected->failed = false;
selected->failurePending = false;
}
}
bool CInputHub::TakeFailure(SourceKey& source)
{
CSRWSharedLock lifecycleLock(m_lifecycleLock);
CSRWExclusiveLock lock(m_lock);
for (Source& slot : m_sources)
{
if (!slot.failurePending)
continue;
source.backend = slot.backend;
source.epoch = slot.epoch;
slot.failurePending = false;
return true;
}
return false;
}
bool CInputHub::Start(IInputSink& sink)
{
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
Source * sources[MAX_SOURCES] = {};
unsigned count = 0;
{
CSRWExclusiveLock lock(m_lock);
if (m_started)
return m_sink == &sink;
m_sink = &sink;
m_sinkState = sink.GetState();
m_started = true;
for (Source& source : m_sources)
if (source.active)
{
source.reserved = true;
sources[count++] = &source;
}
}
for (unsigned i = 0; i < count; ++i)
{
Source& source = *sources[i];
const bool started = source.endpoint->Start(source);
bool stop = !started;
{
CSRWExclusiveLock lock(m_lock);
if (!started || source.failed || !source.active || !source.reserved)
{
if (m_owner.backend == source.backend &&
m_owner.epoch == source.epoch)
{
if (m_sink)
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
}
source.active = false;
source.failed = true;
source.failurePending = true;
stop = true;
}
else
source.reserved = false;
source.running = started && !stop;
}
if (!stop)
continue;
source.endpoint->Stop();
{
CSRWExclusiveLock lock(m_lock);
source.running = false;
}
}
return true;
}
void CInputHub::Stop()
{
CSRWExclusiveLock lifecycleLock(m_lifecycleLock);
Source * sources[MAX_SOURCES] = {};
unsigned count = 0;
IInputSink * sink = nullptr;
bool reset = false;
{
CSRWExclusiveLock lock(m_lock);
if (!m_started)
return;
m_started = false;
for (Source& source : m_sources)
if (source.endpoint && source.running)
{
source.running = false;
sources[count++] = &source;
}
sink = m_sink;
reset = m_owner.backend != 0;
m_owner = {};
m_ownerDeadline = 0;
}
for (unsigned i = count; i > 0; --i)
sources[i - 1]->endpoint->Stop();
if (reset && sink)
sink->Reset();
CSRWExclusiveLock lock(m_lock);
m_sink = nullptr;
m_sinkState = 0;
}
bool CInputHub::SourceValid(const SourceKey& source) const
{
if (!source.client || !source.generation)
return false;
return BindingValid(source);
}
bool CInputHub::BindingValid(const SourceKey& source) const
{
if (!BindingPresent(source))
return false;
for (const Source& slot : m_sources)
if (slot.active && !slot.reserved && slot.endpoint &&
slot.backend == source.backend &&
slot.epoch == source.epoch)
return true;
return false;
}
bool CInputHub::BindingPresent(const SourceKey& source) const
{
if (!source.backend || !source.epoch)
return false;
for (const Source& slot : m_sources)
if (slot.active && slot.endpoint &&
slot.backend == source.backend &&
slot.epoch == source.epoch)
return true;
return false;
}
bool CInputHub::OwnerValid(const SourceKey& source) const
{
return SourceValid(source) && SameSource(m_owner, source);
}
bool CInputHub::CheckState()
{
if (!m_started || !m_sink)
return false;
const uint64_t state = m_sink->GetState();
if (state != m_sinkState || !(state & 1))
{
if (m_owner.backend)
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
m_sinkState = state;
}
else if (m_owner.backend && GetTickCount64() >= m_ownerDeadline)
{
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
}
return (state & 1) != 0;
}
InputTargetState CInputHub::GetState(const SourceKey& source)
{
CSRWExclusiveLock lock(m_lock);
InputTargetState result;
if (!BindingPresent(source))
return result;
const bool available = CheckState();
result.state = m_sinkState;
if (!available)
return result;
if (!BindingValid(source))
return result;
if (!m_owner.backend)
result.available = true;
else if (source.client && source.generation &&
SameSource(m_owner, source))
{
result.available = true;
result.owned = true;
result.owner.client = m_owner.client;
result.owner.generation = m_owner.generation;
}
return result;
}
void CInputHub::Failed(Source& source)
{
CSRWExclusiveLock lock(m_lock);
if (!source.active)
return;
if (m_owner.backend == source.backend && m_owner.epoch == source.epoch)
{
if (m_sink)
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
}
source.active = false;
source.failed = true;
source.failurePending = true;
}
InputResult CInputHub::Claim(const SourceKey& source)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (m_owner.backend)
return SameSource(m_owner, source) ?
InputResult::ACCEPTED : InputResult::BUSY;
if (!m_sink->Reset() || m_sink->GetState() != m_sinkState)
{
const uint64_t state = m_sink->GetState();
m_sinkState = state;
return InputResult::UNAVAILABLE;
}
m_owner = source;
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}
InputResult CInputHub::Touch(const SourceKey& source)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}
InputResult CInputHub::Release(const SourceKey& source, bool reset)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
bool accepted = true;
if (reset && m_sink)
accepted = m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
return accepted ? InputResult::ACCEPTED : InputResult::UNAVAILABLE;
}
InputResult CInputHub::SendMouseRelative(const SourceKey& source,
int32_t deltaX, int32_t deltaY, int32_t wheel, uint32_t buttons)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
if (!m_sink->SendMouseRelative(deltaX, deltaY, wheel, buttons))
{
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
return InputResult::UNAVAILABLE;
}
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}
InputResult CInputHub::SendMouseAbsolute(const SourceKey& source,
uint16_t x, uint16_t y, int32_t wheel, uint32_t buttons)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
if (!m_sink->SendMouseAbsolute(x, y, wheel, buttons))
{
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
return InputResult::UNAVAILABLE;
}
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}
InputResult CInputHub::SendKeyboard(const SourceKey& source,
uint8_t modifiers, const uint8_t * keys)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
if (!m_sink->SendKeyboard(modifiers, keys))
{
m_sink->Reset();
m_owner = {};
m_ownerDeadline = 0;
return InputResult::UNAVAILABLE;
}
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}
InputResult CInputHub::Reset(const SourceKey& source)
{
CSRWExclusiveLock lock(m_lock);
if (!SourceValid(source))
return InputResult::STALE;
if (!CheckState())
return InputResult::UNAVAILABLE;
if (!OwnerValid(source))
return m_owner.backend ? InputResult::BUSY : InputResult::STALE;
if (!m_sink->Reset())
{
m_owner = {};
m_ownerDeadline = 0;
return InputResult::UNAVAILABLE;
}
m_ownerDeadline = GetTickCount64() + OWNER_LEASE_MS;
return InputResult::ACCEPTED;
}

108
idd/LGIdd/transport/CInputHub.h Normal file
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@@ -0,0 +1,108 @@
/**
* 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 "CSRWLock.h"
#include "transport/IInputSource.h"
#include "transport/IInputTransport.h"
#include "transport/ITransport.h"
#include <Windows.h>
class IInputSink;
class CInputHub final : public IInputTransport
{
private:
static constexpr unsigned MAX_SOURCES = 8;
static constexpr uint64_t OWNER_LEASE_MS = 500;
struct Source final : public IInputTarget
{
CInputHub * owner = nullptr;
BackendId backend = 0;
uint32_t epoch = 0;
IInputSource * endpoint = nullptr;
bool running = false;
bool active = false;
bool reserved = false;
bool failed = false;
bool failurePending = false;
SourceKey Key(const InputSourceId& source) const;
InputTargetState GetState(const InputSourceId& source) override;
void Failed() override;
InputResult Claim(const InputSourceId& source) override;
InputResult Touch(const InputSourceId& source) override;
InputResult Release(
const InputSourceId& source, bool reset) override;
InputResult SendMouseRelative(const InputSourceId& source,
int32_t deltaX, int32_t deltaY, int32_t wheel,
uint32_t buttons) override;
InputResult SendMouseAbsolute(const InputSourceId& source,
uint16_t x, uint16_t y, int32_t wheel,
uint32_t buttons) override;
InputResult SendKeyboard(const InputSourceId& source,
uint8_t modifiers, const uint8_t * keys) override;
InputResult Reset(const InputSourceId& source) override;
};
mutable CSRWLock m_lock;
CSRWLock m_lifecycleLock;
Source m_sources[MAX_SOURCES];
IInputSink * m_sink = nullptr;
uint64_t m_sinkState = 0;
SourceKey m_owner;
uint64_t m_ownerDeadline = 0;
bool m_started = false;
bool SourceValid(const SourceKey& source) const;
bool BindingPresent(const SourceKey& source) const;
bool BindingValid(const SourceKey& source) const;
bool OwnerValid(const SourceKey& source) const;
bool CheckState();
InputTargetState GetState(const SourceKey& source);
void Failed(Source& source);
InputResult Claim(const SourceKey& source);
InputResult Touch(const SourceKey& source);
InputResult Release(const SourceKey& source, bool reset);
InputResult SendMouseRelative(const SourceKey& source,
int32_t deltaX, int32_t deltaY, int32_t wheel, uint32_t buttons);
InputResult SendMouseAbsolute(const SourceKey& source,
uint16_t x, uint16_t y, int32_t wheel, uint32_t buttons);
InputResult SendKeyboard(const SourceKey& source,
uint8_t modifiers, const uint8_t * keys);
InputResult Reset(const SourceKey& source);
public:
CInputHub();
~CInputHub() override;
CInputHub(const CInputHub&) = delete;
CInputHub& operator=(const CInputHub&) = delete;
bool Bind(BackendId backend, uint32_t epoch, IInputSource& source);
void Unbind(BackendId backend, uint32_t epoch);
bool TakeFailure(SourceKey& source);
bool Start(IInputSink& sink) override;
void Stop() override;
};

251
idd/LGIdd/transport/CTransportManager.cpp
View File

@@ -27,6 +27,7 @@
#include <utility>
static const uint64_t RETRY_DELAY_MS = 500;
static const uint64_t SERVICE_RETRY_DELAY_MS = 250;
class CSourceEvents final : public ITransportEvents
{
@@ -353,7 +354,14 @@ bool CTransportManager::AddServices(Entry& entry)
uint32_t epoch = 0;
bool primary = false;
bool controlAdded = false;
bool controlFailed = false;
bool controlAbsent = false;
bool inputAdded = false;
bool inputFailed = false;
bool inputAbsent = false;
bool frameAdded = false;
bool frameAbsent = false;
uint64_t retryAt = 0;
{
CSRWSharedLock entryLock(entry.lock);
transport = entry.transport;
@@ -361,38 +369,149 @@ bool CTransportManager::AddServices(Entry& entry)
epoch = entry.epoch;
primary = entry.primary;
controlAdded = entry.controlAdded;
controlFailed = entry.controlFailed;
controlAbsent = entry.controlAbsent;
inputAdded = entry.inputAdded;
inputFailed = entry.inputFailed;
inputAbsent = entry.inputAbsent;
frameAdded = entry.frameAdded;
frameAbsent = entry.frameAbsent;
retryAt = entry.serviceRetryAt;
}
if (!transport)
return false;
return !primary;
if (!controlAdded)
const uint64_t now = GetTickCount64();
const bool attach = now >= retryAt;
bool controlRetry = false;
bool frameRetry = false;
bool inputRetry = false;
if (attach && !controlAdded && !controlFailed && !controlAbsent)
{
IControlSink * control = transport->Control();
if (control && m_control.Add(id, epoch, *control))
{
if (!m_control.Add(id, epoch, transport->Control()))
return false;
controlAdded = true;
CSRWExclusiveLock entryLock(entry.lock);
entry.controlAdded = true;
}
else if (control)
controlRetry = true;
else
{
controlAbsent = true;
CSRWExclusiveLock entryLock(entry.lock);
entry.controlAbsent = true;
}
}
if (!frameAdded &&
m_frames.Bind(id, epoch, primary, transport->FrameSink()))
if (attach && !frameAdded && !frameAbsent)
{
IFrameSink * frame = transport->FrameSink();
if (frame && m_frames.Bind(id, epoch, primary, *frame))
{
CSRWExclusiveLock entryLock(entry.lock);
entry.frameAdded = true;
return true;
frameAdded = true;
}
else if (frame || primary)
frameRetry = true;
else
{
frameAbsent = true;
CSRWExclusiveLock entryLock(entry.lock);
entry.frameAbsent = true;
}
}
if (frameAdded)
return true;
m_control.Remove(id, epoch);
if (attach && !inputAdded && !inputFailed && !inputAbsent)
{
IInputSource * input = transport->Input();
if (input && m_input.Bind(id, epoch, *input))
{
CSRWExclusiveLock entryLock(entry.lock);
entry.controlAdded = false;
entry.inputAdded = true;
inputAdded = true;
}
else if (input)
inputRetry = true;
else
{
inputAbsent = true;
CSRWExclusiveLock entryLock(entry.lock);
entry.inputAbsent = true;
}
}
if (attach && (controlRetry || inputRetry || frameRetry))
{
CSRWExclusiveLock entryLock(entry.lock);
entry.serviceRetryAt = now + SERVICE_RETRY_DELAY_MS;
}
return !primary || frameAdded;
}
void CTransportManager::HandleServiceFailures()
{
ControlToken token;
while (m_control.TakeFailure(token))
{
Entry * entries[FRAME_MAX_SINKS] = {};
const unsigned count = Entries(entries);
for (unsigned i = 0; i < count; ++i)
{
Entry& entry = *entries[i];
bool restart = false;
{
CSRWExclusiveLock entryLock(entry.lock);
if (entry.id != token.backend || entry.epoch != token.epoch ||
!entry.controlAdded)
continue;
entry.controlAdded = false;
entry.controlFailed = true;
restart = !entry.exposed;
}
m_control.Remove(token.backend, token.epoch);
if (restart)
{
RemoveServices(entry);
ScheduleRetry(entry);
}
break;
}
}
SourceKey source;
while (m_input.TakeFailure(source))
{
Entry * entries[FRAME_MAX_SINKS] = {};
const unsigned count = Entries(entries);
for (unsigned i = 0; i < count; ++i)
{
Entry& entry = *entries[i];
bool restart = false;
{
CSRWExclusiveLock entryLock(entry.lock);
if (entry.id != source.backend || entry.epoch != source.epoch ||
!entry.inputAdded)
continue;
entry.inputAdded = false;
entry.inputFailed = true;
restart = !entry.exposed;
}
m_input.Unbind(source.backend, source.epoch);
if (restart)
{
RemoveServices(entry);
ScheduleRetry(entry);
}
break;
}
}
return false;
}
bool CTransportManager::SetupEntry(Entry& entry, size_t alignment)
@@ -400,9 +519,7 @@ bool CTransportManager::SetupEntry(Entry& entry, size_t alignment)
std::shared_ptr<ITransport> transport;
{
CSRWSharedLock entryLock(entry.lock);
if (entry.state == State::READY)
return true;
if (entry.state != State::INITIALIZED)
if (entry.state != State::INITIALIZED && entry.state != State::READY)
return false;
transport = entry.transport;
}
@@ -449,20 +566,25 @@ void CTransportManager::RemoveServices(Entry& entry)
uint32_t epoch = 0;
bool frameAdded = false;
bool controlAdded = false;
bool inputAdded = false;
{
CSRWExclusiveLock entryLock(entry.lock);
id = entry.id;
epoch = entry.epoch;
frameAdded = entry.frameAdded;
controlAdded = entry.controlAdded;
inputAdded = entry.inputAdded;
entry.frameAdded = false;
entry.controlAdded = false;
entry.inputAdded = false;
}
if (frameAdded)
m_frames.Unbind(id, epoch);
if (inputAdded)
m_input.Unbind(id, epoch);
if (controlAdded)
m_control.Remove(id, epoch);
if (frameAdded)
m_frames.Unbind(id, epoch);
}
void CTransportManager::RetryEntry(Entry& entry, uint64_t now,
@@ -489,6 +611,14 @@ void CTransportManager::RetryEntry(Entry& entry, uint64_t now,
entry.directMemory = DirectFrameBufferMemory {};
entry.directMemoryValid = false;
entry.setupDone = false;
entry.controlFailed = false;
entry.controlAbsent = false;
entry.inputFailed = false;
entry.inputAbsent = false;
entry.frameAbsent = false;
entry.serviceRetryAt = 0;
entry.recoveryPending = false;
entry.recovery = RecoveryUpdate {};
++entry.epoch;
if (!entry.epoch)
++entry.epoch;
@@ -503,9 +633,13 @@ void CTransportManager::RetryEntry(Entry& entry, uint64_t now,
}
if (setup && !SetupEntry(entry, alignment))
{
RemoveServices(entry);
CSRWSharedLock entryLock(entry.lock);
if (entry.state == State::FAILED)
{
entryLock.Unlock();
ScheduleRetry(entry);
}
}
}
void CTransportManager::HandleProcessResult(
@@ -566,7 +700,7 @@ ITransport::OpenResult CTransportManager::Open()
const unsigned count = Entries(entries);
OpenResult aggregate = Primary() ?
OpenResult::SUCCESS : OpenResult::FAILURE;
for (unsigned i = 0; i < count && aggregate != OpenResult::FAILURE; ++i)
for (unsigned i = 0; i < count; ++i)
{
Entry& entry = *entries[i];
if (!BeginCall(entry, Call::LIFECYCLE, true))
@@ -593,8 +727,11 @@ ITransport::OpenResult CTransportManager::Open()
}
EndCall(entry, transport);
if (entry.required && result != OpenResult::SUCCESS)
aggregate = result;
if (entry.required && result == OpenResult::FAILURE)
aggregate = OpenResult::FAILURE;
else if (entry.required && result == OpenResult::RETRY &&
aggregate == OpenResult::SUCCESS)
aggregate = OpenResult::RETRY;
}
EndPhase();
@@ -609,7 +746,7 @@ bool CTransportManager::Initialize()
Entry * entries[FRAME_MAX_SINKS] = {};
const unsigned count = Entries(entries);
bool success = true;
for (unsigned i = 0; i < count && success; ++i)
for (unsigned i = 0; i < count; ++i)
{
Entry& entry = *entries[i];
if (!BeginCall(entry, Call::LIFECYCLE, true))
@@ -676,12 +813,12 @@ bool CTransportManager::Setup(size_t alignment)
Entry * entries[FRAME_MAX_SINKS] = {};
const unsigned count = Entries(entries);
bool success = initialized;
for (unsigned i = 0; i < count && success; ++i)
for (unsigned i = 0; i < count; ++i)
{
Entry& entry = *entries[i];
if (!BeginCall(entry, Call::LIFECYCLE, true))
{
if (entry.required)
if (entry.primary)
success = false;
continue;
}
@@ -694,12 +831,16 @@ bool CTransportManager::Setup(size_t alignment)
transport = entry.transport;
}
if (state == State::INITIALIZED && !SetupEntry(entry, alignment))
if ((state == State::INITIALIZED || state == State::READY) &&
!SetupEntry(entry, alignment))
{
RemoveServices(entry);
if (entry.required)
{
CSRWSharedLock entryLock(entry.lock);
state = entry.state;
}
if (entry.primary)
success = false;
else
else if (state == State::FAILED)
ScheduleRetry(entry);
}
{
@@ -709,14 +850,17 @@ bool CTransportManager::Setup(size_t alignment)
EndCall(entry, transport);
}
for (unsigned i = 0; i < count && success; ++i)
Entry * primary = Primary();
if (primary)
{
CSRWSharedLock entryLock(entries[i]->lock);
if (entries[i]->required && entries[i]->state != State::READY)
CSRWSharedLock entryLock(primary->lock);
if (primary->state != State::READY || !primary->frameAdded)
success = false;
}
else
success = false;
if (success)
if (initialized)
{
CSRWExclusiveLock managerLock(m_lock);
m_setup = true;
@@ -746,6 +890,7 @@ ITransport::ProcessResult CTransportManager::Process(
}
const uint64_t now = GetTickCount64();
HandleServiceFailures();
Entry * entries[FRAME_MAX_SINKS] = {};
const unsigned count = Entries(entries);
for (unsigned i = 0; i < count; ++i)
@@ -793,6 +938,9 @@ ITransport::ProcessResult CTransportManager::Process(
entry.setupDone = true;
}
if (setup)
SetupEntry(entry, alignment);
DrainRecovery(entry, transport);
CSourceEvents sourceEvents(id, epoch, events);
const ProcessResult result = transport->Process(sourceEvents);
@@ -880,6 +1028,11 @@ void CTransportManager::Stop()
return;
}
for (unsigned i = count; i > 0; --i)
RemoveServices(*entries[i - 1]);
m_input.Stop();
for (unsigned i = count; i > 0; --i)
{
Entry& entry = *entries[i - 1];
@@ -891,7 +1044,6 @@ void CTransportManager::Stop()
state = entry.state;
}
RemoveServices(entry);
if (transport && state != State::STOPPED)
transport->Stop();
{
@@ -952,8 +1104,9 @@ void CTransportManager::SyncRecovery()
}
}
void CTransportManager::RecoveryStatus(uint64_t session, uint32_t serial,
bool active, Recovery state, uint32_t error)
void CTransportManager::RecoveryStatus(const SourceKey& source,
uint64_t session, uint32_t serial, bool active,
Recovery state, uint32_t error)
{
{
CSRWSharedLock managerLock(m_lock);
@@ -970,7 +1123,8 @@ void CTransportManager::RecoveryStatus(uint64_t session, uint32_t serial,
bool call = false;
{
CSRWExclusiveLock entryLock(entry.lock);
if (entry.stopRequested || !entry.transport ||
if (entry.id != source.backend || entry.epoch != source.epoch ||
entry.stopRequested || !entry.transport ||
(entry.state != State::INITIALIZED && entry.state != State::READY))
continue;
@@ -995,6 +1149,7 @@ void CTransportManager::RecoveryStatus(uint64_t session, uint32_t serial,
if (call)
transport->RecoveryStatus(session, serial, active, state, error);
EndCall(entry, transport);
return;
}
}
@@ -1095,25 +1250,7 @@ IControlTransport& CTransportManager::Control()
return m_control;
}
IInputTransport * CTransportManager::Input()
IInputTransport& CTransportManager::Input()
{
Entry * primary = Primary();
if (!primary || !BeginPhase(Phase::ACCESS, true))
return nullptr;
if (!BeginCall(*primary, Call::ACCESS, true))
{
EndPhase();
return nullptr;
}
std::shared_ptr<ITransport> transport;
{
CSRWSharedLock entryLock(primary->lock);
transport = primary->transport;
}
Expose(*primary);
IInputTransport * input = transport ? transport->Input() : nullptr;
EndCall(*primary, transport);
EndPhase();
return input;
return m_input;
}

16
idd/LGIdd/transport/CTransportManager.h
View File

@@ -20,8 +20,10 @@
#pragma once
#include "CSRWLock.h"
#include "transport/CControlHub.h"
#include "transport/CFrameHub.h"
#include "transport/CInputHub.h"
#include "transport/ITransport.h"
#include <memory>
@@ -97,7 +99,14 @@ private:
uint32_t epoch = 1;
uint64_t retryAt = 0;
bool controlAdded = false;
bool controlFailed = false;
bool controlAbsent = false;
bool inputAdded = false;
bool inputFailed = false;
bool inputAbsent = false;
bool frameAdded = false;
bool frameAbsent = false;
uint64_t serviceRetryAt = 0;
bool exposed = false;
bool setupDone = false;
bool syncPending = false;
@@ -114,6 +123,7 @@ private:
unsigned m_entryCount = 0;
CControlHub m_control;
CFrameHub m_frames;
CInputHub m_input;
Entry * m_primary = nullptr;
bool m_initialized = false;
bool m_setup = false;
@@ -141,6 +151,7 @@ private:
bool InitializeEntry(Entry& entry);
bool SetupEntry(Entry& entry, size_t alignment);
bool AddServices(Entry& entry);
void HandleServiceFailures();
void RetryEntry(Entry& entry, uint64_t now, bool initialized,
bool setup, size_t alignment);
void HandleProcessResult(Entry& entry, ProcessResult result);
@@ -164,7 +175,8 @@ public:
ProcessResult Process(ITransportEvents& events);
void Stop();
void SyncRecovery();
void RecoveryStatus(uint64_t session, uint32_t serial, bool active,
void RecoveryStatus(const SourceKey& source,
uint64_t session, uint32_t serial, bool active,
Recovery state, uint32_t error);
FrameMemoryLimits GetMemoryLimits() const;
@@ -172,5 +184,5 @@ public:
IFrameTransport& Frames();
IControlTransport& Control();
IInputTransport * Input();
IInputTransport& Input();
};

69
idd/LGIdd/transport/IControlSink.h Normal file
View File

@@ -0,0 +1,69 @@
/**
* 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 "postprocess/D12FrameFormat.h"
#include <Windows.h>
#include <wdf.h>
#include <IddCx.h>
#include <memory>
#include <stddef.h>
#include <stdint.h>
struct ControlToken
{
uint32_t backend = 0;
uint32_t epoch = 0;
};
enum class ControlResult
{
APPLIED,
RETRY,
FAILED,
};
class IControlEvents
{
public:
virtual ~IControlEvents() = default;
virtual void OnControlReplay(const ControlToken& token) = 0;
};
class IControlSink
{
public:
virtual ~IControlSink() = default;
// Passing nullptr is a callback-quiescence barrier. Once this returns, no
// callback using the previous events pointer may still be running.
virtual void SetControlEvents(
IControlEvents * events, const ControlToken& token) = 0;
// These calls perform at most one delivery attempt.
virtual ControlResult SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, size_t size, UINT sdrWhiteLevel) = 0;
virtual ControlResult SetColorTransform(
std::shared_ptr<const D12ColorTransform> transform) = 0;
};

76
idd/LGIdd/transport/IInputSource.h Normal file
View File

@@ -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 <stdint.h>
struct InputSourceId
{
uint32_t client = 0;
uint32_t generation = 0;
};
struct InputTargetState
{
uint64_t state = 0;
InputSourceId owner;
bool available = false;
bool owned = false;
};
enum class InputResult
{
ACCEPTED,
BUSY,
UNAVAILABLE,
STALE,
};
class IInputTarget
{
public:
virtual ~IInputTarget() = default;
virtual InputTargetState GetState(const InputSourceId& source) = 0;
virtual void Failed() = 0;
virtual InputResult Claim(const InputSourceId& source) = 0;
virtual InputResult Touch(const InputSourceId& source) = 0;
virtual InputResult Release(
const InputSourceId& source, bool reset) = 0;
virtual InputResult SendMouseRelative(const InputSourceId& source,
int32_t deltaX, int32_t deltaY, int32_t wheel, uint32_t buttons) = 0;
virtual InputResult SendMouseAbsolute(const InputSourceId& source,
uint16_t x, uint16_t y, int32_t wheel, uint32_t buttons) = 0;
virtual InputResult SendKeyboard(const InputSourceId& source,
uint8_t modifiers, const uint8_t * keys) = 0;
virtual InputResult Reset(const InputSourceId& source) = 0;
};
class IInputSource
{
public:
virtual ~IInputSource() = default;
// Start may issue target calls before it returns. Stop is a callback-
// quiescence barrier and leaves no work that can access the target.
virtual bool Start(IInputTarget& target) = 0;
virtual void Stop() = 0;
};

11
idd/LGIdd/transport/ITransport.h
View File

@@ -26,9 +26,9 @@
#include <stddef.h>
#include <stdint.h>
class IControlTransport;
class IControlSink;
class IFrameSink;
class IInputTransport;
class IInputSource;
using BackendId = uint32_t;
@@ -93,7 +93,8 @@ public:
virtual FrameMemoryLimits GetMemoryLimits() const = 0;
virtual DirectFrameBufferMemory GetDirectMemory() const = 0;
virtual IFrameSink& FrameSink() = 0;
virtual IControlTransport& Control() = 0;
virtual IInputTransport * Input() { return nullptr; }
// Component pointers are fixed after Setup and remain valid until Stop.
virtual IFrameSink * FrameSink() { return nullptr; }
virtual IControlSink * Control() { return nullptr; }
virtual IInputSource * Input() { return nullptr; }
};

194
idd/LGIdd/transport/lgmp/CLGMPControl.cpp
View File

@@ -98,6 +98,7 @@ bool CLGMPControl::Initialize()
void CLGMPControl::DeInit()
{
SetControlEvents(nullptr, {});
for (int i = 0; i < LGMP_Q_POINTER_LEN; ++i)
lgmpHostMemFree(&m_pointerMemory[i]);
for (int i = 0; i < POINTER_SHAPE_BUFFERS; ++i)
@@ -106,7 +107,6 @@ void CLGMPControl::DeInit()
lgmpHostMemFree(&m_pointerTransformMemory[i]);
m_pointerQueue = nullptr;
m_pointerShape = nullptr;
m_pointerMemoryIndex = 0;
m_pointerShapeIndex = 0;
m_pointerTransformIndex = 0;
@@ -129,43 +129,101 @@ bool CLGMPControl::HasNewSubscribers()
return lgmpHostQueueNewSubs(m_pointerQueue) != 0;
}
void CLGMPControl::SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, UINT sdrWhiteLevel)
void CLGMPControl::SetControlEvents(
IControlEvents * events, const ControlToken& token)
{
PLGMPMemory mem;
if (info.CursorShapeInfo.CursorType == IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED)
CSRWExclusiveLock lock(m_eventLock);
m_events = events;
m_token = events ? token : ControlToken {};
}
PLGMPMemory CLGMPControl::FindAvailable(
PLGMPMemory * memory, int count, int& index) const
{
for (int offset = 0; offset < count; ++offset)
{
mem = m_pointerMemory[m_pointerMemoryIndex];
if (++m_pointerMemoryIndex == LGMP_Q_POINTER_LEN)
m_pointerMemoryIndex = 0;
const int candidate = (index + offset) % count;
if (memory[candidate] &&
!lgmpHostQueuePayloadPending(m_pointerQueue, memory[candidate]))
{
index = candidate;
return memory[candidate];
}
}
return nullptr;
}
ControlResult CLGMPControl::SendCursor(
const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, size_t size, UINT sdrWhiteLevel)
{
if (!m_pointerQueue)
return ControlResult::FAILED;
const bool hasShape = info.CursorShapeInfo.CursorType !=
IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED;
if (hasShape)
{
if (info.CursorShapeInfo.CursorType != IDDCX_CURSOR_SHAPE_TYPE_ALPHA &&
info.CursorShapeInfo.CursorType !=
IDDCX_CURSOR_SHAPE_TYPE_MASKED_COLOR)
{
DEBUG_ERROR("Unsupported pointer shape type: %u",
static_cast<unsigned>(info.CursorShapeInfo.CursorType));
return ControlResult::FAILED;
}
if (info.CursorShapeInfo.Height &&
info.CursorShapeInfo.Pitch > SIZE_MAX / info.CursorShapeInfo.Height)
{
DEBUG_ERROR("Pointer shape size overflow");
return ControlResult::FAILED;
}
const size_t required = static_cast<size_t>(
info.CursorShapeInfo.Height) * info.CursorShapeInfo.Pitch;
if (required != size || (required && !data) ||
required > MAX_POINTER_SIZE - sizeof(KVMFRCursor))
{
DEBUG_ERROR("Invalid pointer shape payload: %zu bytes", size);
return ControlResult::FAILED;
}
}
PLGMPMemory mem;
int * index;
int count;
if (!hasShape)
{
index = &m_pointerMemoryIndex;
count = LGMP_Q_POINTER_LEN;
mem = FindAvailable(m_pointerMemory, count, *index);
}
else
{
mem = m_pointerShapeMemory[m_pointerShapeIndex];
if (++m_pointerShapeIndex == POINTER_SHAPE_BUFFERS)
m_pointerShapeIndex = 0;
index = &m_pointerShapeIndex;
count = POINTER_SHAPE_BUFFERS;
mem = FindAvailable(m_pointerShapeMemory, count, *index);
}
if (!mem)
return ControlResult::RETRY;
KVMFRCursor * cursor = (KVMFRCursor *)lgmpHostMemPtr(mem);
cursor->sdrWhiteLevel = sdrWhiteLevel ?
sdrWhiteLevel : KVMFR_SDR_WHITE_LEVEL_DEFAULT;
m_cursorVisible = info.IsCursorVisible;
uint32_t flags = CURSOR_FLAG_VISIBLE_VALID;
if (info.IsCursorVisible)
{
m_cursorX = info.X;
m_cursorY = info.Y;
cursor->x = (int16_t)info.X;
cursor->y = (int16_t)info.Y;
flags |= CURSOR_FLAG_POSITION | CURSOR_FLAG_VISIBLE;
}
if (info.CursorShapeInfo.CursorType != IDDCX_CURSOR_SHAPE_TYPE_UNINITIALIZED)
if (hasShape)
{
memcpy(cursor + 1, data,
(size_t)info.CursorShapeInfo.Height * info.CursorShapeInfo.Pitch);
if (size)
memcpy(cursor + 1, data, size);
cursor->hx = (int8_t )info.CursorShapeInfo.XHot;
cursor->hy = (int8_t )info.CursorShapeInfo.YHot;
@@ -185,56 +243,43 @@ void CLGMPControl::SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
}
flags |= CURSOR_FLAG_SHAPE;
m_pointerShape = mem;
}
LGMP_STATUS status;
while ((status = lgmpHostQueuePost(
m_pointerQueue, flags, mem)) != LGMP_OK)
const LGMP_STATUS status =
lgmpHostQueuePost(m_pointerQueue, flags, mem);
if (status == LGMP_OK)
{
if (status == LGMP_ERR_QUEUE_FULL)
{
Sleep(1);
continue;
*index = (*index + 1) % count;
return ControlResult::APPLIED;
}
if (status == LGMP_ERR_QUEUE_FULL)
return ControlResult::RETRY;
DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s",
lgmpStatusString(status));
break;
}
return ControlResult::FAILED;
}
void CLGMPControl::SetColorTransform(
ControlResult CLGMPControl::SetColorTransform(
std::shared_ptr<const D12ColorTransform> transform)
{
{
CSRWExclusiveLock lock(m_colorTransformLock);
m_colorTransform = std::move(transform);
}
SendColorTransform();
return SendColorTransform(transform);
}
std::shared_ptr<const D12ColorTransform>
CLGMPControl::GetColorTransform() const
{
CSRWSharedLock lock(m_colorTransformLock);
std::shared_ptr<const D12ColorTransform> transform = m_colorTransform;
return transform;
}
void CLGMPControl::SendColorTransform()
ControlResult CLGMPControl::SendColorTransform(
const std::shared_ptr<const D12ColorTransform>& transform)
{
if (!m_pointerQueue || !m_pointerTransformMemory[0])
return;
return ControlResult::FAILED;
PLGMPMemory mem = m_pointerTransformMemory[m_pointerTransformIndex];
if (++m_pointerTransformIndex == COLOR_TRANSFORM_BUFFERS)
m_pointerTransformIndex = 0;
PLGMPMemory mem = FindAvailable(m_pointerTransformMemory,
COLOR_TRANSFORM_BUFFERS, m_pointerTransformIndex);
if (!mem)
return ControlResult::RETRY;
KVMFRCursor * cursor = (KVMFRCursor *)lgmpHostMemPtr(mem);
KVMFRColorTransform * output =
(KVMFRColorTransform *)(cursor + 1);
const auto transform = GetColorTransform();
output->flags = 0;
if (transform)
@@ -248,54 +293,25 @@ void CLGMPControl::SendColorTransform()
memcpy(output->lut, transform->lut, sizeof(output->lut));
}
LGMP_STATUS status;
while ((status = lgmpHostQueuePost(m_pointerQueue,
CURSOR_FLAG_COLOR_TRANSFORM, mem)) != LGMP_OK)
const LGMP_STATUS status = lgmpHostQueuePost(m_pointerQueue,
CURSOR_FLAG_COLOR_TRANSFORM, mem);
if (status == LGMP_OK)
{
if (status == LGMP_ERR_QUEUE_FULL)
{
Sleep(1);
continue;
m_pointerTransformIndex =
(m_pointerTransformIndex + 1) % COLOR_TRANSFORM_BUFFERS;
return ControlResult::APPLIED;
}
if (status == LGMP_ERR_QUEUE_FULL)
return ControlResult::RETRY;
DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer Transform): %s",
lgmpStatusString(status));
break;
}
return ControlResult::FAILED;
}
void CLGMPControl::ResendCursor()
void CLGMPControl::RequestReplay()
{
PLGMPMemory mem = m_pointerShape;
if (!mem)
return;
KVMFRCursor* cursor = (KVMFRCursor*)lgmpHostMemPtr(mem);
cursor->x = (int16_t)m_cursorX;
cursor->y = (int16_t)m_cursorY;
const uint32_t flags =
CURSOR_FLAG_POSITION | CURSOR_FLAG_SHAPE | CURSOR_FLAG_VISIBLE_VALID |
(m_cursorVisible ? CURSOR_FLAG_VISIBLE : 0);
LGMP_STATUS status;
while ((status = lgmpHostQueuePost(
m_pointerQueue, flags, mem)) != LGMP_OK)
{
if (status == LGMP_ERR_QUEUE_FULL)
{
Sleep(1);
continue;
}
DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s",
lgmpStatusString(status));
break;
}
}
void CLGMPControl::ResendState()
{
ResendCursor();
SendColorTransform();
CSRWSharedLock lock(m_eventLock);
if (m_events)
m_events->OnControlReplay(m_token);
}

31
idd/LGIdd/transport/lgmp/CLGMPControl.h
View File

@@ -23,7 +23,7 @@
#include "CSRWLock.h"
#include "transport/lgmp/CLGMPHost.h"
#include "transport/IControlTransport.h"
#include "transport/IControlSink.h"
#include "common/KVMFR.h"
@@ -35,7 +35,7 @@
class CLGMPTransport;
class CLGMPControl final : public IControlTransport
class CLGMPControl final : public IControlSink
{
private:
friend class CLGMPTransport;
@@ -49,26 +49,25 @@ private:
PLGMPMemory m_pointerMemory[LGMP_Q_POINTER_LEN] = {};
PLGMPMemory m_pointerShapeMemory[POINTER_SHAPE_BUFFERS] = {};
PLGMPMemory m_pointerTransformMemory[COLOR_TRANSFORM_BUFFERS] = {};
PLGMPMemory m_pointerShape = nullptr;
int m_pointerMemoryIndex = 0;
int m_pointerShapeIndex = 0;
int m_pointerTransformIndex = 0;
bool m_cursorVisible = false;
int m_cursorX = 0;
int m_cursorY = 0;
mutable CSRWLock m_colorTransformLock;
std::shared_ptr<const D12ColorTransform> m_colorTransform;
mutable CSRWLock m_eventLock;
IControlEvents * m_events = nullptr;
ControlToken m_token = {};
void SendColorTransform();
void ResendCursor();
PLGMPMemory FindAvailable(
PLGMPMemory * memory, int count, int& index) const;
ControlResult SendColorTransform(
const std::shared_ptr<const D12ColorTransform>& transform);
bool Initialize();
void DeInit();
LGMP_STATUS ReadDataWithSource(void * data, size_t * size,
uint32_t * sourceClientID);
LGMP_STATUS AckData();
bool HasNewSubscribers();
void ResendState();
void RequestReplay();
public:
explicit CLGMPControl(CLGMPHost& host) :
@@ -78,10 +77,10 @@ public:
CLGMPControl(const CLGMPControl&) = delete;
CLGMPControl& operator=(const CLGMPControl&) = delete;
void SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info, const BYTE * data,
UINT sdrWhiteLevel) override;
void SetColorTransform(
void SetControlEvents(
IControlEvents * events, const ControlToken& token) override;
ControlResult SendCursor(const IDARG_OUT_QUERY_HWCURSOR& info,
const BYTE * data, size_t size, UINT sdrWhiteLevel) override;
ControlResult SetColorTransform(
std::shared_ptr<const D12ColorTransform> transform) override;
std::shared_ptr<const D12ColorTransform>
GetColorTransform() const override;
};

215
idd/LGIdd/transport/lgmp/CLGMPInputTransport.cpp
View File

@@ -20,7 +20,6 @@
#include "transport/lgmp/CLGMPInputTransport.h"
#include "input/IInputSink.h"
#include "transport/lgmp/CLGMPHost.h"
#include "CDebug.h"
#include "CSRWLock.h"
@@ -101,7 +100,10 @@ bool CLGMPInputTransport::Initialize()
memset(lgmpHostMemPtr(memory), 0, sizeof(KVMFRInputStatus));
}
{
CSRWExclusiveLock lock(m_statusLock);
m_statusDirty = true;
}
return true;
}
@@ -113,26 +115,44 @@ void CLGMPInputTransport::DeInit()
m_queue = nullptr;
}
void CLGMPInputTransport::UpdateSinkState(uint64_t state)
InputSourceId CLGMPInputTransport::Owner() const
{
if (state == m_sinkState)
InputSourceId source;
source.client = m_ownerClientID;
source.generation = m_ownerGeneration;
return source;
}
void CLGMPInputTransport::UpdateTargetState(
const InputTargetState& state)
{
CSRWExclusiveLock lock(m_statusLock);
if (state.state == m_targetState.state &&
state.available == m_targetState.available &&
state.owned == m_targetState.owned &&
state.owner.client == m_targetState.owner.client &&
state.owner.generation == m_targetState.owner.generation)
return;
m_sinkState = state;
if (state.state != m_targetState.state)
{
if (++m_endpointGeneration == 0)
++m_endpointGeneration;
}
m_targetState = state;
m_statusDirty = true;
}
void CLGMPInputTransport::PublishStatus()
bool CLGMPInputTransport::PublishStatus()
{
CSRWExclusiveLock lock(m_statusLock);
if (!m_queue)
return;
return true;
if (lgmpHostQueueNewSubs(m_queue))
m_statusDirty = true;
if (!m_statusDirty || !lgmpHostQueueHasSubs(m_queue))
return;
return true;
PLGMPMemory memory = nullptr;
for (PLGMPMemory candidate : m_statusMemory)
@@ -142,9 +162,9 @@ void CLGMPInputTransport::PublishStatus()
break;
}
if (!memory)
return;
return true;
const bool available = (m_sinkState & 1) != 0;
const bool available = m_targetState.available;
KVMFRInputStatus status = {};
status.version = KVMFR_INPUT_VERSION;
status.capabilities = available ?
@@ -152,11 +172,11 @@ void CLGMPInputTransport::PublishStatus()
KVMFR_INPUT_CAP_MOUSE_ABSOLUTE |
KVMFR_INPUT_CAP_KEYBOARD : 0;
status.flags = available ? KVMFR_INPUT_STATUS_AVAILABLE : 0;
if (m_ownerClientID)
if (m_targetState.owned)
{
status.flags |= KVMFR_INPUT_STATUS_HAS_OWNER;
status.ownerClientID = m_ownerClientID;
status.ownerGeneration = m_ownerGeneration;
status.ownerClientID = m_targetState.owner.client;
status.ownerGeneration = m_targetState.owner.generation;
}
status.generation = m_endpointGeneration;
status.lease = static_cast<uint32_t>(OWNER_LEASE_MS);
@@ -173,11 +193,26 @@ void CLGMPInputTransport::PublishStatus()
m_statusDirty = false;
}
else if (result != LGMP_ERR_QUEUE_FULL)
{
DEBUG_WARN("lgmpHostQueuePost Failed (Input Status): %s",
lgmpStatusString(result));
return false;
}
return true;
}
bool CLGMPInputTransport::Start(IInputSink& sink)
void CLGMPInputTransport::FlushStatus()
{
if (m_statusFailed.load(std::memory_order_acquire) || PublishStatus())
return;
m_statusFailed.store(true, std::memory_order_release);
CSRWSharedLock lock(m_lifecycleLock);
if (m_stopEvent)
SetEvent(m_stopEvent);
}
bool CLGMPInputTransport::Start(IInputTarget& target)
{
CSRWExclusiveLock lock(m_lifecycleLock);
if (m_thread)
@@ -198,7 +233,7 @@ bool CLGMPInputTransport::Start(IInputSink& sink)
m_thread = nullptr;
m_pollTimer = nullptr;
m_stopEvent = nullptr;
m_sink = nullptr;
m_target = nullptr;
}
if (!m_queue)
@@ -224,19 +259,25 @@ bool CLGMPInputTransport::Start(IInputSink& sink)
return false;
}
m_sink = &sink;
UpdateSinkState(sink.GetState());
if (!m_endpointGeneration)
m_target = &target;
{
m_endpointGeneration = 1;
CSRWExclusiveLock statusLock(m_statusLock);
m_targetState = target.GetState({});
if (++m_endpointGeneration == 0)
++m_endpointGeneration;
m_statusDirty = true;
}
m_statusFailed.store(false, std::memory_order_release);
m_thread = CreateThread(nullptr, 0, ThreadProc, this, 0, nullptr);
if (!m_thread)
{
DEBUG_ERROR_HR(GetLastError(), "Failed to create LGMP input worker");
m_sink = nullptr;
m_sinkState = 0;
m_target = nullptr;
{
CSRWExclusiveLock statusLock(m_statusLock);
m_targetState = {};
m_statusDirty = true;
}
CloseHandle(m_pollTimer);
CloseHandle(m_stopEvent);
m_pollTimer = nullptr;
@@ -271,12 +312,16 @@ void CLGMPInputTransport::Stop()
CloseHandle(m_stopEvent);
m_stopEvent = nullptr;
}
m_sink = nullptr;
m_target = nullptr;
m_ownerClientID = 0;
m_ownerGeneration = 0;
m_ownerSequence = 0;
m_ownerDeadline = 0;
m_sinkState = 0;
{
CSRWExclusiveLock statusLock(m_statusLock);
m_targetState = {};
m_statusDirty = true;
}
}
bool CLGMPInputTransport::IsOwner(
@@ -294,16 +339,19 @@ bool CLGMPInputTransport::Claim(
++m_statistics.sequenceErrors;
return false;
}
if (!m_sink)
if (!m_target)
{
++m_statistics.deliveryFailures;
return false;
}
const uint64_t sinkState = m_sink->GetState();
if (!(sinkState & 1) || sinkState != m_sinkState ||
!m_sink->Reset() || m_sink->GetState() != sinkState)
InputSourceId source;
source.client = sourceClientID;
source.generation = message.generation;
const InputResult result = m_target->Claim(source);
if (result != InputResult::ACCEPTED)
{
UpdateTargetState(m_target->GetState(source));
++m_statistics.deliveryFailures;
return false;
}
@@ -312,7 +360,7 @@ bool CLGMPInputTransport::Claim(
m_ownerGeneration = message.generation;
m_ownerSequence = message.sequence;
RenewLease();
m_statusDirty = true;
UpdateTargetState(m_target->GetState(source));
++m_statistics.claims;
DEBUG_INFO("Input owner %u generation %u acquired",
m_ownerClientID, m_ownerGeneration);
@@ -332,14 +380,16 @@ void CLGMPInputTransport::ReleaseOwner(
const uint32_t clientID = m_ownerClientID;
const uint32_t generation = m_ownerGeneration;
if (reset && m_sink)
m_sink->Reset();
if (m_target)
{
m_target->Release(Owner(), reset);
UpdateTargetState(m_target->GetState({}));
}
m_ownerClientID = 0;
m_ownerGeneration = 0;
m_ownerSequence = 0;
m_ownerDeadline = 0;
m_statusDirty = true;
++m_statistics.releases;
DEBUG_INFO("Input owner %u generation %u released (%s)",
clientID, generation, reason);
@@ -347,23 +397,18 @@ void CLGMPInputTransport::ReleaseOwner(
void CLGMPInputTransport::CheckOwner()
{
if (!m_sink)
if (!m_target)
return;
const uint64_t state = m_sink->GetState();
if (state != m_sinkState)
{
UpdateSinkState(state);
ReleaseOwner(true, "input endpoint changed");
return;
}
const InputTargetState state = m_target->GetState(Owner());
UpdateTargetState(state);
if (!m_ownerClientID)
return;
if (!(state & 1))
if (!state.available || !state.owned)
{
ReleaseOwner(true, "input unavailable");
ReleaseOwner(false, "input ownership changed");
return;
}
@@ -418,17 +463,9 @@ bool CLGMPInputTransport::ProcessMessage(
uint32_t sourceClientID, const KVMFRInputMessage& message)
{
const bool owner = IsOwner(sourceClientID, message.generation);
const uint64_t sinkState = m_sink ?
m_sink->GetState() : m_sinkState;
if (sinkState != m_sinkState)
{
UpdateSinkState(sinkState);
if (m_ownerClientID)
{
ReleaseOwner(true, "input endpoint changed");
return false;
}
}
InputSourceId source;
source.client = sourceClientID;
source.generation = message.generation;
if (!message.generation || !message.sequence || message.reserved ||
!ValidatePayload(message))
@@ -439,6 +476,10 @@ bool CLGMPInputTransport::ProcessMessage(
return false;
}
if (m_target)
UpdateTargetState(m_target->GetState(
m_ownerClientID ? Owner() : source));
if (message.type == KVMFR_INPUT_MESSAGE_CLAIM)
{
if (m_ownerClientID)
@@ -474,7 +515,7 @@ bool CLGMPInputTransport::ProcessMessage(
return false;
}
bool accepted = false;
InputResult result = InputResult::STALE;
bool inputReport = false;
switch (message.type)
{
@@ -483,56 +524,52 @@ bool CLGMPInputTransport::ProcessMessage(
return true;
case KVMFR_INPUT_MESSAGE_KEEPALIVE:
accepted = true;
result = m_target ? m_target->Touch(source) :
InputResult::UNAVAILABLE;
break;
case KVMFR_INPUT_MESSAGE_RESET:
accepted = m_sink && m_sink->Reset();
result = m_target ? m_target->Reset(source) :
InputResult::UNAVAILABLE;
break;
case KVMFR_INPUT_MESSAGE_MOUSE_RELATIVE:
inputReport = true;
accepted = m_sink && m_sink->SendMouseRelative(
result = m_target ? m_target->SendMouseRelative(source,
message.payload.mouseRelative.deltaX,
message.payload.mouseRelative.deltaY,
message.payload.mouseRelative.wheel,
message.payload.mouseRelative.buttons);
message.payload.mouseRelative.buttons) : InputResult::UNAVAILABLE;
break;
case KVMFR_INPUT_MESSAGE_MOUSE_ABSOLUTE:
inputReport = true;
accepted = m_sink && m_sink->SendMouseAbsolute(
result = m_target ? m_target->SendMouseAbsolute(source,
message.payload.mouseAbsolute.x,
message.payload.mouseAbsolute.y,
message.payload.mouseAbsolute.wheel,
message.payload.mouseAbsolute.buttons);
message.payload.mouseAbsolute.buttons) : InputResult::UNAVAILABLE;
break;
case KVMFR_INPUT_MESSAGE_KEYBOARD:
inputReport = true;
accepted = m_sink && m_sink->SendKeyboard(
result = m_target ? m_target->SendKeyboard(source,
message.payload.keyboard.modifiers,
message.payload.keyboard.keys);
message.payload.keyboard.keys) : InputResult::UNAVAILABLE;
break;
default:
break;
}
if (!accepted)
if (result != InputResult::ACCEPTED)
{
++m_statistics.deliveryFailures;
ReleaseOwner(true, "input delivery failed");
return false;
}
const uint64_t deliveredState = m_sink->GetState();
if (deliveredState != m_sinkState)
{
UpdateSinkState(deliveredState);
ReleaseOwner(true, "input endpoint changed");
return false;
}
UpdateTargetState(m_target->GetState(source));
m_ownerSequence = message.sequence;
RenewLease();
@@ -541,9 +578,9 @@ bool CLGMPInputTransport::ProcessMessage(
return true;
}
bool CLGMPInputTransport::DrainMessages()
bool CLGMPInputTransport::DrainMessages(bool& received)
{
bool received = false;
received = false;
unsigned count = 0;
for (; count < 256; ++count)
{
@@ -558,7 +595,7 @@ bool CLGMPInputTransport::DrainMessages()
{
DEBUG_ERROR("lgmpHostReadData Failed (Input): %s",
lgmpStatusString(status));
break;
return false;
}
received = true;
@@ -577,13 +614,19 @@ bool CLGMPInputTransport::DrainMessages()
ProcessMessage(sourceClientID, message);
}
lgmpHostAckData(m_queue);
const LGMP_STATUS ackStatus = lgmpHostAckData(m_queue);
if (ackStatus != LGMP_OK)
{
DEBUG_ERROR("lgmpHostAckData Failed (Input): %s",
lgmpStatusString(ackStatus));
return false;
}
}
if (count > m_statistics.maxDrain)
m_statistics.maxDrain = count;
if (count == 256)
++m_statistics.drainLimit;
return received;
return true;
}
void CLGMPInputTransport::LogStatistics(ULONGLONG now)
@@ -643,11 +686,22 @@ void CLGMPInputTransport::Thread()
m_statistics = {};
m_statistics.lastLog = GetTickCount64();
const HANDLE waitHandles[] = { m_stopEvent, m_pollTimer };
bool failed = false;
for (;;)
{
CheckOwner();
const bool received = DrainMessages();
PublishStatus();
bool received = false;
if (!DrainMessages(received))
{
failed = true;
break;
}
if (!PublishStatus())
{
m_statusFailed.store(true, std::memory_order_release);
failed = true;
break;
}
const ULONGLONG now = GetTickCount64();
if (received)
activeUntil = now + ACTIVE_POLL_MS;
@@ -659,23 +713,30 @@ void CLGMPInputTransport::Thread()
DEBUG_ERROR_HR(GetLastError(), "Failed to arm LGMP input timer");
if (WaitForSingleObject(m_stopEvent, 1) != WAIT_TIMEOUT)
break;
continue;
failed = true;
break;
}
const DWORD wait = WaitForMultipleObjects(
_countof(waitHandles), waitHandles, FALSE, INFINITE);
if (wait == WAIT_FIRST_OBJECT_VALUE)
{
failed = m_statusFailed.load(std::memory_order_acquire);
break;
}
if (wait != WAIT_FIRST_OBJECT_VALUE + 1)
{
DEBUG_ERROR_HR(GetLastError(), "LGMP input worker wait failed");
failed = true;
break;
}
}
ReleaseOwner(true, "transport stopped");
UpdateSinkState(0);
UpdateTargetState({});
PublishStatus();
if (failed && m_target)
m_target->Failed();
if (avTaskHandle)
AvRevertMmThreadCharacteristics(avTaskHandle);
}

23
idd/LGIdd/transport/lgmp/CLGMPInputTransport.h
View File

@@ -21,11 +21,12 @@
#pragma once
#include "CSRWLock.h"
#include "transport/IInputTransport.h"
#include "transport/IInputSource.h"
#include "common/LGMPConfig.h"
#include <Windows.h>
#include <atomic>
#include <stdint.h>
extern "C" {
@@ -33,10 +34,10 @@ extern "C" {
}
class CLGMPHost;
class IInputSink;
class IInputTarget;
struct KVMFRInputMessage;
class CLGMPInputTransport final : public IInputTransport
class CLGMPInputTransport final : public IInputSource
{
private:
static constexpr ULONGLONG OWNER_LEASE_MS = 500;
@@ -63,9 +64,10 @@ private:
PLGMPHostQueue m_queue = nullptr;
PLGMPMemory m_statusMemory[LGMP_Q_INPUT_LEN] = {};
IInputSink * m_sink = nullptr;
IInputTarget * m_target = nullptr;
CSRWLock m_lifecycleLock;
CSRWLock m_statusLock;
HANDLE m_stopEvent = nullptr;
HANDLE m_pollTimer = nullptr;
HANDLE m_thread = nullptr;
@@ -74,18 +76,21 @@ private:
uint32_t m_ownerGeneration = 0;
uint32_t m_ownerSequence = 0;
ULONGLONG m_ownerDeadline = 0;
uint64_t m_sinkState = 0;
InputTargetState m_targetState;
uint32_t m_endpointGeneration = 0;
uint32_t m_statusSerial = 0;
bool m_statusDirty = false;
std::atomic<bool> m_statusFailed = false;
Statistics m_statistics = {};
bool Initialize();
void DeInit();
void UpdateSinkState(uint64_t state);
void PublishStatus();
InputSourceId Owner() const;
void UpdateTargetState(const InputTargetState& state);
bool PublishStatus();
void FlushStatus();
void LogStatistics(ULONGLONG now);
bool DrainMessages();
bool DrainMessages(bool& received);
bool ProcessMessage(uint32_t sourceClientID,
const KVMFRInputMessage& message);
bool ValidatePayload(const KVMFRInputMessage& message) const;
@@ -109,6 +114,6 @@ public:
CLGMPInputTransport(const CLGMPInputTransport&) = delete;
CLGMPInputTransport& operator=(const CLGMPInputTransport&) = delete;
bool Start(IInputSink& sink) override;
bool Start(IInputTarget& target) override;
void Stop() override;
};

4
idd/LGIdd/transport/lgmp/CLGMPTransport.cpp
View File

@@ -121,6 +121,8 @@ ITransport::ProcessResult CLGMPTransport::Process(ITransportEvents& events)
return ProcessResult::FAILURE;
}
m_input.FlushStatus();
const uint64_t now = CFrameScheduler::Nanotime();
// Take the frame subscriber snapshot before processing scheduling messages,
@@ -192,7 +194,7 @@ ITransport::ProcessResult CLGMPTransport::Process(ITransportEvents& events)
m_frames.FinalizeSubscribers(subscribers, now);
if (m_control.HasNewSubscribers())
m_control.ResendState();
m_control.RequestReplay();
return ProcessResult::OK;
}

6
idd/LGIdd/transport/lgmp/CLGMPTransport.h
View File

@@ -63,7 +63,7 @@ public:
FrameMemoryLimits GetMemoryLimits() const override;
DirectFrameBufferMemory GetDirectMemory() const override;
IFrameSink& FrameSink() override { return m_frames; }
IControlTransport& Control() override { return m_control; }
IInputTransport * Input() override { return &m_input; }
IFrameSink * FrameSink() override { return &m_frames; }
IControlSink * Control() override { return &m_control; }
IInputSource * Input() override { return &m_input; }
};