NTSTATUS CMiniportWaveRTStream::SetState
(
_In_ KSSTATE State_
)
{
PAGED_CODE();
NTSTATUS ntStatus = STATUS_SUCCESS;
PADAPTERCOMMON pAdapterComm = m_pMiniport->GetAdapterCommObj();
// Spew an event for a pin state change request from portcls
//Event type: eMINIPORT_PIN_STATE
//Parameter 1: Current linear buffer position
//Parameter 2: Current WaveRtBufferWritePosition
//Parameter 3: Pin State 0->KS_STOP, 1->KS_ACQUIRE, 2->KS_PAUSE, 3->KS_RUN
//Parameter 4:0
pAdapterComm->WriteEtwEvent(eMINIPORT_PIN_STATE,
100, // replace with the correct "Current linear buffer position"
m_ulCurrentWritePosition, // replace with the previous WaveRtBufferWritePosition that the drive received
State_, // repalce with the correct "Data length completed"
0); // always zero
switch (State_)
{
case KSSTATE_STOP:
// Reset DMA
m_ullPlayPosition = 0;
m_ullWritePosition = 0;
m_ullLinearPosition = 0;
// Wait until all work items are completed.
if (!m_bCapture && !g_DoNotCreateDataFiles)
{
m_SaveData.WaitAllWorkItems();
}
#ifdef SYSVAD_BTH_BYPASS
if (m_ScoOpen)
{
PBTHHFPDEVICECOMMON bthHfpDevice;
ASSERT(m_pMiniport->IsBthHfpDevice());
bthHfpDevice = m_pMiniport->GetBthHfpDevice(); // weak ref.
ASSERT(bthHfpDevice != NULL);
//
// Close the SCO connection.
//
ntStatus = bthHfpDevice->StreamClose();
if (!NT_SUCCESS(ntStatus))
{
DPF(D_ERROR, ("SetState: KSSTATE_STOP, StreamClose failed, 0x%x", ntStatus));
}
m_ScoOpen = FALSE;
}
#endif // SYSVAD_BTH_BYPASS
break;
case KSSTATE_ACQUIRE:
#ifdef SYSVAD_BTH_BYPASS
if (m_pMiniport->IsBthHfpDevice())
{
if(m_ScoOpen == FALSE)
{
PBTHHFPDEVICECOMMON bthHfpDevice;
bthHfpDevice = m_pMiniport->GetBthHfpDevice(); // weak ref.
ASSERT(bthHfpDevice != NULL);
//
// Open the SCO connection.
//
ntStatus = bthHfpDevice->StreamOpen();
IF_FAILED_ACTION_JUMP(
ntStatus,
DPF(D_ERROR, ("SetState: KSSTATE_ACQUIRE, StreamOpen failed, 0x%x", ntStatus)),
Done);
m_ScoOpen = TRUE;
}
}
#endif // SYSVAD_BTH_BYPASS
break;
case KSSTATE_PAUSE:
ULONGLONG ullPositionTemp;
// Pause DMA
if (m_ulNotificationIntervalMs > 0)
{
KeCancelTimer(m_pNotificationTimer);
KeFlushQueuedDpcs();
}
// This call updates the linear buffer position.
GetLinearBufferPosition(&ullPositionTemp, NULL);
break;
case KSSTATE_RUN:
// Start DMA
LARGE_INTEGER ullPerfCounterTemp;
ullPerfCounterTemp = KeQueryPerformanceCounter(&m_ullPerformanceCounterFrequency);
m_ullDmaTimeStamp = KSCONVERT_PERFORMANCE_TIME(m_ullPerformanceCounterFrequency.QuadPart, ullPerfCounterTemp);
m_hnsElapsedTimeCarryForward = 0;
if (m_ulNotificationIntervalMs > 0)
{
LARGE_INTEGER delay;
delay.HighPart = 0;
delay.LowPart = m_ulNotificationIntervalMs * HNSTIME_PER_MILLISECOND * -1;
KeSetTimerEx
(
m_pNotificationTimer,
delay,
m_ulNotificationIntervalMs,
m_pNotificationDpc
);
}
break;
}
m_KsState = State_;
#ifdef SYSVAD_BTH_BYPASS
Done:
#endif // SYSVAD_BTH_BYPASS
return ntStatus;
}
void
TimerNotifyRT
(
_In_ PKDPC Dpc,
_In_opt_ PVOID DeferredContext,
_In_opt_ PVOID SA1,
_In_opt_ PVOID SA2
)
{
UNREFERENCED_PARAMETER(Dpc);
UNREFERENCED_PARAMETER(SA1);
UNREFERENCED_PARAMETER(SA2);
CMiniportWaveRTStream* _this = (CMiniportWaveRTStream*)DeferredContext;
if (NULL == _this)
{
return;
}
#ifdef SYSVAD_BTH_BYPASS
if (_this->m_ScoOpen)
{
if (!NT_SUCCESS(_this->GetScoStreamNtStatus()))
{
return;
}
}
#endif // SYSVAD_BTH_BYPASS
if (_this->m_KsState != KSSTATE_RUN)
{
return;
}
PADAPTERCOMMON pAdapterComm = _this->m_pMiniport->GetAdapterCommObj();
// Simple buffer underrun detection.
if (!_this->IsCurrentWaveRTWritePositionUpdated())
{
//Event type: eMINIPORT_GLITCH_REPORT
//Parameter 1: Current linear buffer position
//Parameter 2: the previous WaveRtBufferWritePosition that the drive received
//Parameter 3: major glitch code: 1:WaveRT buffer is underrun
//Parameter 4: minor code for the glitch cause
pAdapterComm->WriteEtwEvent(eMINIPORT_GLITCH_REPORT,
100, // replace with the correct "Current linear buffer position"
_this->GetCurrentWaveRTWritePosition(),
1, // WaveRT buffer is underrun
0);
}
if (!IsListEmpty(&_this->m_NotificationList))
{
PLIST_ENTRY leCurrent = _this->m_NotificationList.Flink;
while (leCurrent != &_this->m_NotificationList)
{
NotificationListEntry* nleCurrent = CONTAINING_RECORD( leCurrent, NotificationListEntry, ListEntry);
//Event type: eMINIPORT_BUFFER_COMPLETE
//Parameter 1: Current linear buffer position
//Parameter 2: the previous WaveRtBufferWritePosition that the drive received
//Parameter 3: Data length completed
//Parameter 4:0
pAdapterComm->WriteEtwEvent(eMINIPORT_BUFFER_COMPLETE,
100, // replace with the correct "Current linear buffer position"
_this->GetCurrentWaveRTWritePosition(),
300, // repalce with the correct "Data length completed"
0); // always zero
KeSetEvent(nleCurrent->NotificationEvent, 0, 0);
leCurrent = leCurrent->Flink;
}
}
}
