Update to SysVAD, Wave test and public sample of KS Position Test (#496)147237

* Update to Wave test and public sample of KS Position test.
* Update to the SysVAD audio driver sample.
* Add the PnpLockDown property.

1 files changed, 2 insertions, 2 deletions

diff --git a/audio/sysvad/EndpointsCommon/minwavertstream.cpp b/audio/sysvad/EndpointsCommon/minwavertstream.cpp
index 93ecdcf3..499d5b38 100644
--- a/audio/sysvad/EndpointsCommon/minwavertstream.cpp
+++ b/audio/sysvad/EndpointsCommon/minwavertstream.cpp
@@ -968,12 +968,12 @@ NTSTATUS CMiniportWaveRTStream::GetReadPacket
     // Return next packet number to be read
     *PacketNumber = availablePacketNumber;
 
-    // Compute and return timestamp corresponding to start of the available packet. In a real hardware
+    // Compute and return timestamp corresponding to the end of the available packet. In a real hardware
     // driver, the timestamp would be computed in a driver and hardware specific manner. In this sample
     // driver, it is extrapolated from the sample driver's internal simulated position correlation
     // [m_ullLinearPosition @ m_ullDmaTimeStamp] and the sample's internal 64-bit packet counter, subtracting
     // 1 from the packet counter to compute the time at the start of that last completed packet.
-    ULONGLONG linearPositionOfAvailablePacket = (packetCounter - 1) * (m_ulDmaBufferSize / m_ulNotificationsPerBuffer);
+    ULONGLONG linearPositionOfAvailablePacket = packetCounter * (m_ulDmaBufferSize / m_ulNotificationsPerBuffer);
     // Need to divide by (1000 * 10000 because m_ulDmaMovementRate is average bytes per sec
     ULONGLONG carryForwardBytes = (hnsElapsedTimeCarryForward * m_ulDmaMovementRate) / 10000000;
     ULONGLONG deltaLinearPosition = ullLinearPosition + carryForwardBytes - linearPositionOfAvailablePacket;