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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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16
idd/LGIdd/capture/CSwapChainPublisher.cpp
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@@ -20,7 +20,7 @@
#include "capture/CSwapChainProcessor.h"
#include "transport/CFrameTransport.h"
#include "transport/IFrameTransport.h"
#include <avrt.h>
#include "CDebug.h"
@@ -83,7 +83,7 @@ void CSwapChainProcessor::PublisherThread()
const bool ready = m_frameProcessor->HasReadyFrame();
if (!ready)
{
m_transport.ProcessFrameQueue();
m_transport.ProcessDeliveries();
if (m_frameProcessor->HasReadyFrame())
continue;
@@ -123,12 +123,12 @@ void CSwapChainProcessor::PublisherThread()
}
uint64_t replayTarget;
if (m_transport.GetSharedFrameTarget(current, replayTarget))
if (m_transport.GetPendingDeliveryTarget(current, replayTarget))
{
bool retry = false;
if (replayTarget <= current)
{
if (m_transport.ReplaySharedFrame(current, retry))
if (m_transport.RetryPendingDelivery(current, retry))
continue;
current = CFrameScheduler::Nanotime();
@@ -205,15 +205,15 @@ void CSwapChainProcessor::PublisherThread()
uint64_t current = CFrameScheduler::Nanotime();
uint64_t replayTarget;
if (m_transport.GetSharedFrameTarget(current, replayTarget) &&
if (m_transport.GetPendingDeliveryTarget(current, replayTarget) &&
replayTarget < target)
{
if (replayTarget <= current)
{
m_transport.ProcessFrameQueue();
m_transport.ProcessDeliveries();
current = CFrameScheduler::Nanotime();
bool retry = false;
if (m_transport.ReplaySharedFrame(current, retry))
if (m_transport.RetryPendingDelivery(current, retry))
continue;
current = CFrameScheduler::Nanotime();
@@ -251,7 +251,7 @@ void CSwapChainProcessor::PublisherThread()
}
const uint64_t publishStart = CFrameScheduler::Nanotime();
m_transport.ProcessFrameQueue();
m_transport.ProcessDeliveries();
if (!m_transport.FrameBufferAvailable(schedule) ||
!m_frameProcessor->Publish(schedule, periodic, publishStart))
{