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[idd] audio: add the mediated PCM data plane

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Expose cancel-safe direct-I/O queues for reading rendered frames and
writing captured frames through the private broker endpoint.

Separate render and capture storage, publish format and state
generations, and preserve local loopback while no broker is bound.
This commit is contained in:
Geoffrey McRae
2026-09-02 00:02:57 +10:00
parent e55cb8bd61
commit 5e07786468
6 changed files with 1322 additions and 63 deletions
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14
idd/LGAudio/MiniportWaveRTStream.cpp
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@@ -114,8 +114,7 @@ NTSTATUS CMiniportWaveRTStream::Initialize(
m_format = *format;
m_fingerprint = fingerprint;
if (m_kind == EndpointKind::Render)
status = m_adapter->ConfigureRender(m_fingerprint);
status = m_adapter->ConfigureStream(m_kind, m_fingerprint);
return status;
}
@@ -195,8 +194,7 @@ NTSTATUS CMiniportWaveRTStream::SetFormat(
m_fingerprint = fingerprint;
KeReleaseSpinLock(&m_positionLock, oldIrql);
if (m_kind == EndpointKind::Render)
status = m_adapter->ConfigureRender(m_fingerprint);
status = m_adapter->ConfigureStream(m_kind, m_fingerprint);
return status;
}
@@ -244,6 +242,8 @@ NTSTATUS CMiniportWaveRTStream::SetState(_In_ KSSTATE state)
if (resetCapture)
m_adapter->ResetCapture();
m_adapter->SetStreamState(m_kind, KSSTATE_RUN);
KeAcquireSpinLock(&m_positionLock, &oldIrql);
if (m_state == KSSTATE_RUN)
ArmTimerLocked();
@@ -280,6 +280,7 @@ NTSTATUS CMiniportWaveRTStream::SetState(_In_ KSSTATE state)
KeReleaseSpinLock(&m_positionLock, oldIrql);
StopTimer();
m_adapter->SetStreamState(m_kind, state);
return STATUS_SUCCESS;
}
@@ -901,6 +902,7 @@ void CMiniportWaveRTStream::AdvanceEventPacketsLocked(
{
m_eosNotificationSent = true;
m_state = KSSTATE_PAUSE;
m_adapter->SetStreamState(m_kind, KSSTATE_PAUSE);
m_pendingBytes = 0;
m_frameRemainder = 0;
break;
@@ -944,6 +946,7 @@ void CMiniportWaveRTStream::TransferFramesLocked(_In_ ULONGLONG bytes)
if (m_linearPosition >= m_eosLinearPosition)
{
m_state = KSSTATE_PAUSE;
m_adapter->SetStreamState(m_kind, KSSTATE_PAUSE);
return;
}
@@ -997,7 +1000,10 @@ void CMiniportWaveRTStream::TransferFramesLocked(_In_ ULONGLONG bytes)
if (m_kind == EndpointKind::Render && m_eosReceived &&
m_linearPosition >= m_eosLinearPosition)
{
m_state = KSSTATE_PAUSE;
m_adapter->SetStreamState(m_kind, KSSTATE_PAUSE);
}
}
void CMiniportWaveRTStream::SignalNotificationsLocked()