From e490c3c7f7bb5461cfa78a214827aa534fb43a3e Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Sat, 21 Mar 2015 21:19:34 +0100
Subject: Bump OculusVR RIFT SDK to 0.4.4

---
 LibOVR/Src/Util/Util_LatencyTest2Reader.cpp | 118 ++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 LibOVR/Src/Util/Util_LatencyTest2Reader.cpp

(limited to 'LibOVR/Src/Util/Util_LatencyTest2Reader.cpp')

diff --git a/LibOVR/Src/Util/Util_LatencyTest2Reader.cpp b/LibOVR/Src/Util/Util_LatencyTest2Reader.cpp
new file mode 100644
index 0000000..e34bf19
--- /dev/null
+++ b/LibOVR/Src/Util/Util_LatencyTest2Reader.cpp
@@ -0,0 +1,118 @@
+/************************************************************************************
+
+Filename    :   Util_LatencyTest2Reader.cpp
+Content     :   Shared functionality for the DK2 latency tester
+Created     :   July 8, 2014
+Authors     :   Volga Aksoy, Chris Taylor
+
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.2 (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-3.2 
+
+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_LatencyTest2Reader.h"
+
+namespace OVR { namespace Util {
+
+
+//// FrameTimeRecord
+
+bool FrameTimeRecord::ColorToReadbackIndex(int *readbackIndex, unsigned char color)
+{
+    int compareColor = color - LT2_ColorIncrement/2;
+    int index        = color / LT2_ColorIncrement;  // Use color without subtraction due to rounding.
+    int delta        = compareColor - index * LT2_ColorIncrement;
+
+    if ((delta < LT2_PixelTestThreshold) && (delta > -LT2_PixelTestThreshold))
+    {
+        *readbackIndex = index;
+        return true;
+    }
+    return false;
+}
+
+unsigned char FrameTimeRecord::ReadbackIndexToColor(int readbackIndex)
+{
+    OVR_ASSERT(readbackIndex < LT2_IncrementCount);
+    return (unsigned char)(readbackIndex * LT2_ColorIncrement + LT2_ColorIncrement/2);
+}
+
+
+//// FrameTimeRecordSet
+
+FrameTimeRecordSet::FrameTimeRecordSet()
+{
+    NextWriteIndex = 0;
+    memset(this, 0, sizeof(FrameTimeRecordSet));
+}
+
+void FrameTimeRecordSet::AddValue(int readValue, double timeSeconds)
+{
+    Records[NextWriteIndex].ReadbackIndex = readValue;
+    Records[NextWriteIndex].TimeSeconds = timeSeconds;
+    NextWriteIndex++;
+    if (NextWriteIndex == RecordCount)
+        NextWriteIndex = 0;
+}
+// Matching should be done starting from NextWrite index 
+// until wrap-around
+
+const FrameTimeRecord& FrameTimeRecordSet::operator [] (int i) const
+{
+    return Records[(NextWriteIndex + i) & RecordMask];
+}
+
+const FrameTimeRecord& FrameTimeRecordSet::GetMostRecentFrame()
+{
+    return Records[(NextWriteIndex - 1) & RecordMask];
+}
+
+// Advances I to  absolute color index
+bool FrameTimeRecordSet::FindReadbackIndex(int* i, int readbackIndex) const
+{
+    for (; *i < RecordCount; (*i)++)
+    {
+        if ((*this)[*i].ReadbackIndex == readbackIndex)
+            return true;
+    }
+    return false;
+}
+
+bool FrameTimeRecordSet::IsAllZeroes() const
+{
+    for (int i = 0; i < RecordCount; i++)
+        if (Records[i].ReadbackIndex != 0)
+            return false;
+    return true;
+}
+
+
+//// RecordStateReader
+
+void RecordStateReader::GetRecordSet(FrameTimeRecordSet& recordset)
+{
+    if(!Updater)
+    {
+        return;
+    }
+        
+    recordset = Updater->SharedLatencyTestState.GetState();
+    return;
+}
+
+
+}} // namespace OVR::Util
-- 
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