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+/************************************************************************************
+
+Filename : Util_LatencyTest2.cpp
+Content : Wraps the lower level LatencyTester interface for DK2 and adds functionality.
+Created : March 10, 2014
+Authors : Volga Aksoy
+
+Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+*************************************************************************************/
+
+#include "Util_LatencyTest2.h"
+
+#include "../OVR_CAPI.h"
+#include "../Kernel/OVR_Log.h"
+#include "../Kernel/OVR_Timer.h"
+
+
+namespace OVR { namespace Util {
+
+//-------------------------------------------------------------------------------------
+// ***** LatencyTest2
+
+LatencyTest2::LatencyTest2(SensorDevice* device)
+ : Handler(getThis())
+ , TestActive(false)
+ , StartTiming(-1)
+ , LatencyMeasuredInSeconds(-1)
+ , LastPixelReadMsg(NULL)
+ , RenderColorValue(0)
+ , NumMsgsBeforeSettle(0)
+ , NumTestsSuccessful(0)
+{
+ if (device != NULL)
+ {
+ SetSensorDevice(device);
+ }
+}
+
+LatencyTest2::~LatencyTest2()
+{
+ HmdDevice = NULL;
+ LatencyTesterDev = NULL;
+
+ Handler.RemoveHandlerFromDevices();
+}
+
+bool LatencyTest2::SetSensorDevice(SensorDevice* device)
+{
+ Lock::Locker devLocker(&TesterLock);
+
+ // Enable/Disable pixel read from HMD
+ if (device != HmdDevice)
+ {
+ Handler.RemoveHandlerFromDevices();
+
+ HmdDevice = device;
+
+ if (HmdDevice != NULL)
+ {
+ HmdDevice->AddMessageHandler(&Handler);
+ }
+ }
+
+ return true;
+}
+
+bool LatencyTest2::SetDisplayDevice(LatencyTestDevice* device)
+{
+ Lock::Locker devLocker(&TesterLock);
+
+ if (device != LatencyTesterDev)
+ {
+ LatencyTesterDev = device;
+ if (LatencyTesterDev != NULL)
+ {
+ // Set display to initial (3 dashes).
+ LatencyTestDisplay ltd(2, 0x40400040);
+ LatencyTesterDev->SetDisplay(ltd);
+ }
+ }
+
+ return true;
+}
+
+void LatencyTest2::BeginTest(double startTime)
+{
+ Lock::Locker devLocker(&TesterLock);
+
+ if (!TestActive)
+ {
+ TestActive = true;
+ NumMsgsBeforeSettle = 0;
+
+ // Go to next pixel value
+ //RenderColorValue = (RenderColorValue == 0) ? 255 : 0;
+ RenderColorValue = (RenderColorValue + LT2_ColorIncrement) % 256;
+ RawStartTiming = LastPixelReadMsg.RawSensorTime;
+
+ if (startTime > 0.0)
+ StartTiming = startTime;
+ else
+ StartTiming = ovr_GetTimeInSeconds();
+
+ }
+}
+
+void LatencyTest2::handleMessage(const MessagePixelRead& msg)
+{
+ Lock::Locker devLocker(&TesterLock);
+
+ // Hold onto the last message as we will use this when we start a new test
+ LastPixelReadMsg = msg;
+
+ // If color readback index is valid, store it in the lock-less queue.
+ int readbackIndex = 0;
+ if (FrameTimeRecord::ColorToReadbackIndex(&readbackIndex, msg.PixelReadValue))
+ {
+ RecentFrameSet.AddValue(readbackIndex, msg.FrameTimeSeconds);
+ LockessRecords.SetState(RecentFrameSet);
+ }
+
+ NumMsgsBeforeSettle++;
+
+ if (TestActive)
+ {
+ int pixelValueDiff = RenderColorValue - LastPixelReadMsg.PixelReadValue;
+ int rawTimeDiff = LastPixelReadMsg.RawFrameTime - RawStartTiming;
+
+ if (pixelValueDiff < LT2_PixelTestThreshold && pixelValueDiff > -LT2_PixelTestThreshold)
+ {
+ TestActive = false;
+
+ LatencyMeasuredInSeconds = LastPixelReadMsg.FrameTimeSeconds - StartTiming;
+ RawLatencyMeasured = rawTimeDiff;
+ //LatencyMeasuredInSeconds = RawLatencyMeasured / 1000000.0;
+
+ if(LatencyTesterDev && (NumTestsSuccessful % 5) == 0)
+ {
+ int displayNum = (int)(RawLatencyMeasured / 100.0);
+ //int displayNum = NumMsgsBeforeSettle;
+ //int displayNum = (int)(LatencyMeasuredInSeconds * 1000.0);
+ LatencyTestDisplay ltd(1, displayNum);
+ LatencyTesterDev->SetDisplay(ltd);
+ }
+
+ NumTestsSuccessful++;
+ }
+ else if (TestActive && (rawTimeDiff / 1000) > LT2_TimeoutWaitingForColorDetected)
+ {
+ TestActive = false;
+ LatencyMeasuredInSeconds = -1;
+ }
+ }
+}
+
+LatencyTest2::PixelReadHandler::~PixelReadHandler()
+{
+ RemoveHandlerFromDevices();
+}
+
+void LatencyTest2::PixelReadHandler::OnMessage(const Message& msg)
+{
+ if(msg.Type == Message_PixelRead)
+ pLatencyTestUtil->handleMessage(static_cast<const MessagePixelRead&>(msg));
+}
+
+bool LatencyTest2::DisplayScreenColor(Color& colorToDisplay)
+{
+ Lock::Locker devLocker(&TesterLock);
+ colorToDisplay = Color(RenderColorValue, RenderColorValue, RenderColorValue, 255);
+
+ return TestActive;
+}
+
+}} // namespace OVR::Util