NTSTATUS
CHardwareSimulation::
FillScatterGatherBuffers()
/*++
Routine Description:
The hardware has synthesized a buffer and we're to fill a frame buffer.
Arguments:
None
Return Value:
Success / Failure
--*/
{
PAGED_CODE();
DBG_ENTER("() m_PinState=%s, m_PinID=0x%08X, m_ImageSize=0x%08X, m_ScatterGatherMappingsQueued=%u, "
"m_ScatterGatherBytesQueue=0x%08X",
GetPinStateTxt(m_PinState),
m_PinID, m_ImageSize, m_ScatterGatherMappingsQueued, m_ScatterGatherBytesQueued);
NTSTATUS ntStatus = STATUS_SUCCESS;
ULONG BufferRemaining = m_ImageSize;
//
// If there isn't a frame buffer queued, we justskip the frame and consider
// it starvation.
//
while (BufferRemaining &&
!IsListEmpty(&m_ScatterGatherMappings) &&
m_ScatterGatherBytesQueued >= BufferRemaining)
{
LIST_ENTRY *listEntry = RemoveHeadList (&m_ScatterGatherMappings);
m_ScatterGatherMappingsQueued--;
PSCATTER_GATHER_ENTRY SGEntry =
reinterpret_cast <PSCATTER_GATHER_ENTRY> (
CONTAINING_RECORD (
listEntry,
SCATTER_GATHER_ENTRY,
ListEntry
)
);
// Deal with cancellation.
PIRP pIrp = KsStreamPointerGetIrp(SGEntry->CloneEntry, FALSE, FALSE);
if (pIrp)
{
if (pIrp->Cancel)
{
DBG_TRACE( "Cancelling..." );
FreeSGEntry( listEntry, L"StreamPointer Cancel SG List" );
continue;
}
}
//
// Since we're software, we'll be accessing this by virtual address...
//
ULONG Stride = 0;
if ( SGEntry->CloneEntry -> StreamHeader -> Size >= sizeof (KSSTREAM_HEADER) +
sizeof (KS_FRAME_INFO))
{
PKS_FRAME_INFO FrameInfo = reinterpret_cast <PKS_FRAME_INFO> (SGEntry->CloneEntry->StreamHeader+1);
Stride = (ULONG) ABS(FrameInfo->lSurfacePitch);
}
// Have the synthesizer output a frame to the buffer.
ULONG BytesCopied = m_Synthesizer->DoCommit( SGEntry->Virtual, SGEntry->ByteCount, Stride );
NT_ASSERT( BytesCopied );
DBG_TRACE( "BytesCopied = %d", BytesCopied );
//Adding time stamp
if(m_PhotoConfirmationEntry.isRequired())
{
SGEntry -> CloneEntry -> StreamHeader -> PresentationTime.Time =
m_PhotoConfirmationEntry.getTime();
DBG_TRACE("Using Photo Confirmation time = 0x%016llX", m_PhotoConfirmationEntry.getTime());
}
else
{
SGEntry -> CloneEntry -> StreamHeader -> PresentationTime.Time = ConvertQPCtoTimeStamp(NULL);
DBG_TRACE("PresentationTime = 0x%016llX", SGEntry->CloneEntry->StreamHeader->PresentationTime.Time );
}
SGEntry -> CloneEntry -> StreamHeader -> PresentationTime.Numerator =
SGEntry -> CloneEntry -> StreamHeader -> PresentationTime.Denominator = 1;
SGEntry -> CloneEntry -> StreamHeader -> OptionsFlags |= KSSTREAM_HEADER_OPTIONSF_TIMEVALID ;
// Add metadata to the sample.
EmitMetadata( SGEntry -> CloneEntry -> StreamHeader );
BufferRemaining = 0; //-= BytesCopied;
m_NumMappingsCompleted++;
m_ScatterGatherBytesQueued -= SGEntry -> ByteCount;
//
// Release the scatter / gather entry back to our lookaside.
//
ExFreeToNPagedLookasideList (
&m_ScatterGatherLookaside,
reinterpret_cast <PVOID> (SGEntry)
);
}
// Report an error if we used the last buffer.
if (BufferRemaining)
{
//DBG_TRACE("BufferRemaining=%u", BufferRemaining);
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
}
DBG_LEAVE("() = 0x%08X", ntStatus);
return ntStatus;
}
NTSTATUS
CImageHardwareSimulation::
FillScatterGatherBuffers()
/*++
Routine Description:
The hardware has synthesized a buffer in scratch space and we're to
fill scatter / gather buffers.
Arguments:
None
Return Value:
Success / Failure
--*/
{
PAGED_CODE();
DBG_ENTER("() m_PinID=0x%08X, m_ImageSize=0x%08X, m_ScatterGatherMappingsQueued=%d, "
"m_ScatterGatherBytesQueue=0x%08X",
m_PinID, m_ImageSize, m_ScatterGatherMappingsQueued, m_ScatterGatherBytesQueued);
//
// We're using this list lock to protect our scatter / gather lists instead
// of some hardware mechanism / KeSynchronizeExecution / whatever.
//
//KeAcquireSpinLockAtDpcLevel (&m_ListLock);
ULONG BufferRemaining = m_ImageSize;
//
// If there aren't enough scatter / gather buffers queued, consider it starvation.
//
while( BufferRemaining &&
!IsListEmpty(&m_ScatterGatherMappings) &&
m_ScatterGatherBytesQueued >= BufferRemaining)
{
DBG_TRACE( "BufferRemaining=0x%08X, m_ScatterGatherBytesQueued=0x%08X, m_ScatterGatherMappingsQueued=%d",
BufferRemaining, m_ScatterGatherBytesQueued, m_ScatterGatherMappingsQueued );
LIST_ENTRY *listEntry = RemoveHeadList (&m_ScatterGatherMappings);
m_ScatterGatherMappingsQueued--;
PSCATTER_GATHER_ENTRY SGEntry =
reinterpret_cast <PSCATTER_GATHER_ENTRY> (
CONTAINING_RECORD (
listEntry,
SCATTER_GATHER_ENTRY,
ListEntry
)
);
// Deal with cancellation.
PIRP pIrp = KsStreamPointerGetIrp(SGEntry->CloneEntry, FALSE, FALSE);
if (pIrp)
{
if (pIrp->Cancel)
{
DBG_TRACE( "Cancelling..." );
FreeSGEntry( listEntry, L"StreamPointer Cancel SG List" );
continue;
}
}
//
// Since we're software, we'll be accessing this by virtual address...
//
ULONG BytesToCopy = min( BufferRemaining, SGEntry->ByteCount );
// Have the synthesizer output a frame to the buffer.
DBG_TRACE( "DataUsed before Commit() = %d", SGEntry->CloneEntry->StreamHeader->DataUsed );
ULONG BytesCopied =
m_Synthesizer->DoCommit( SGEntry->Virtual, BytesToCopy );
NT_ASSERT(BytesCopied);
DBG_TRACE( "BytesCopied = %d", BytesCopied );
BufferRemaining = 0; //-= BytesCopied;
// Add metadata to the sample.
EmitMetadata( SGEntry -> CloneEntry -> StreamHeader );
ULONGLONG time = ConvertQPCtoTimeStamp(NULL);
if (IsPhotoConfirmationNeeded())
{
DBG_TRACE( "PhotoConfirmation is needed. Frame=%d, Time=0x%016llX", m_PfsFrameNumber, (LONGLONG) time );
SGEntry->PhotoConfirmationInfo = PHOTOCONFIRMATION_INFO( m_PfsFrameNumber, (LONGLONG) time );
}
SGEntry -> CloneEntry -> StreamHeader -> PresentationTime.Time = time;
DBG_TRACE("PresentationTime = 0x%016llX", SGEntry->CloneEntry->StreamHeader->PresentationTime.Time );
SGEntry -> CloneEntry -> StreamHeader -> OptionsFlags |= KSSTREAM_HEADER_OPTIONSF_TIMEVALID;
DBG_TRACE("m_FlashStatus=0x%016llX", m_FlashStatus);
if(m_FlashStatus & KSCAMERA_EXTENDEDPROP_FLASH_ON || m_FlashStatus & KSCAMERA_EXTENDEDPROP_FLASH_ON_ADJUSTABLEPOWER ||
m_FlashStatus & KSCAMERA_EXTENDEDPROP_FLASH_AUTO || m_FlashStatus & KSCAMERA_EXTENDEDPROP_FLASH_AUTO_ADJUSTABLEPOWER)
{
if(m_FlashStatus & KSCAMERA_EXTENDEDPROP_FLASH_SINGLEFLASH && time >= m_TriggerTime && m_TriggerTime != 0 && !m_bFlashed)
{
m_bFlashed = TRUE;
DBG_TRACE("(Single) FLASHED!!!");
}
}
//
// Release the scatter / gather entry back to our lookaside.
//
if( m_bTriggered && !IsPfsEOS() )
{
DBG_TRACE("m_PinMode=%d", m_PinMode);
m_pClone = SGEntry->CloneEntry;
m_PhotoConfirmationInfo = SGEntry->PhotoConfirmationInfo;
m_NumMappingsCompleted++;
m_ScatterGatherBytesQueued -= SGEntry -> ByteCount;
DBG_TRACE( "m_NumMappingsCompleted=%d, m_PhotoConfirmationInfo.isRequired()=%s", m_NumMappingsCompleted, m_PhotoConfirmationInfo.isRequired()?"TRUE":"FALSE" );
if(m_PinMode != PinBurstMode)
{
m_bTriggered = FALSE;
DBG_TRACE("m_bTriggered=FALSE");
}
// Update the VPS frame and loop numbers here. Mark the frame as the EOS
// if we've completed the sequence.
//
// Note: It's actually up to DevProxy to stop feeding us frames!
if( AdvanceFrameCounter() )
{
// We've reached the end of a VPS sequence! Mark the frame as EOS.
SGEntry->CloneEntry->StreamHeader->OptionsFlags |= KSSTREAM_HEADER_OPTIONSF_ENDOFPHOTOSEQUENCE;
m_bEndOfSequence = TRUE;
}
ExFreeToNPagedLookasideList (
&m_ScatterGatherLookaside,
reinterpret_cast <PVOID> (SGEntry)
);
}
else
{
InsertTailList( &m_ScatterGatherMappings, listEntry );
m_ScatterGatherMappingsQueued++;
m_pClone = NULL;
}
}
DBG_LEAVE("()");
if (BufferRemaining)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
else
{
return STATUS_SUCCESS;
}
}
