1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/LibOVR/Src/Util/Util_LatencyTest2Reader.cpp	Wed Jan 14 06:51:16 2015 +0200
     1.3 @@ -0,0 +1,118 @@
     1.4 +/************************************************************************************
     1.5 +
     1.6 +Filename    :   Util_LatencyTest2Reader.cpp
     1.7 +Content     :   Shared functionality for the DK2 latency tester
     1.8 +Created     :   July 8, 2014
     1.9 +Authors     :   Volga Aksoy, Chris Taylor
    1.10 +
    1.11 +Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
    1.12 +
    1.13 +Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
    1.14 +you may not use the Oculus VR Rift SDK except in compliance with the License, 
    1.15 +which is provided at the time of installation or download, or which 
    1.16 +otherwise accompanies this software in either electronic or hard copy form.
    1.17 +
    1.18 +You may obtain a copy of the License at
    1.19 +
    1.20 +http://www.oculusvr.com/licenses/LICENSE-3.2 
    1.21 +
    1.22 +Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
    1.23 +distributed under the License is distributed on an "AS IS" BASIS,
    1.24 +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.25 +See the License for the specific language governing permissions and
    1.26 +limitations under the License.
    1.27 +
    1.28 +*************************************************************************************/
    1.29 +
    1.30 +#include "Util_LatencyTest2Reader.h"
    1.31 +
    1.32 +namespace OVR { namespace Util {
    1.33 +
    1.34 +
    1.35 +//// FrameTimeRecord
    1.36 +
    1.37 +bool FrameTimeRecord::ColorToReadbackIndex(int *readbackIndex, unsigned char color)
    1.38 +{
    1.39 +    int compareColor = color - LT2_ColorIncrement/2;
    1.40 +    int index        = color / LT2_ColorIncrement;  // Use color without subtraction due to rounding.
    1.41 +    int delta        = compareColor - index * LT2_ColorIncrement;
    1.42 +
    1.43 +    if ((delta < LT2_PixelTestThreshold) && (delta > -LT2_PixelTestThreshold))
    1.44 +    {
    1.45 +        *readbackIndex = index;
    1.46 +        return true;
    1.47 +    }
    1.48 +    return false;
    1.49 +}
    1.50 +
    1.51 +unsigned char FrameTimeRecord::ReadbackIndexToColor(int readbackIndex)
    1.52 +{
    1.53 +    OVR_ASSERT(readbackIndex < LT2_IncrementCount);
    1.54 +    return (unsigned char)(readbackIndex * LT2_ColorIncrement + LT2_ColorIncrement/2);
    1.55 +}
    1.56 +
    1.57 +
    1.58 +//// FrameTimeRecordSet
    1.59 +
    1.60 +FrameTimeRecordSet::FrameTimeRecordSet()
    1.61 +{
    1.62 +    NextWriteIndex = 0;
    1.63 +    memset(this, 0, sizeof(FrameTimeRecordSet));
    1.64 +}
    1.65 +
    1.66 +void FrameTimeRecordSet::AddValue(int readValue, double timeSeconds)
    1.67 +{
    1.68 +    Records[NextWriteIndex].ReadbackIndex = readValue;
    1.69 +    Records[NextWriteIndex].TimeSeconds = timeSeconds;
    1.70 +    NextWriteIndex++;
    1.71 +    if (NextWriteIndex == RecordCount)
    1.72 +        NextWriteIndex = 0;
    1.73 +}
    1.74 +// Matching should be done starting from NextWrite index 
    1.75 +// until wrap-around
    1.76 +
    1.77 +const FrameTimeRecord& FrameTimeRecordSet::operator [] (int i) const
    1.78 +{
    1.79 +    return Records[(NextWriteIndex + i) & RecordMask];
    1.80 +}
    1.81 +
    1.82 +const FrameTimeRecord& FrameTimeRecordSet::GetMostRecentFrame()
    1.83 +{
    1.84 +    return Records[(NextWriteIndex - 1) & RecordMask];
    1.85 +}
    1.86 +
    1.87 +// Advances I to  absolute color index
    1.88 +bool FrameTimeRecordSet::FindReadbackIndex(int* i, int readbackIndex) const
    1.89 +{
    1.90 +    for (; *i < RecordCount; (*i)++)
    1.91 +    {
    1.92 +        if ((*this)[*i].ReadbackIndex == readbackIndex)
    1.93 +            return true;
    1.94 +    }
    1.95 +    return false;
    1.96 +}
    1.97 +
    1.98 +bool FrameTimeRecordSet::IsAllZeroes() const
    1.99 +{
   1.100 +    for (int i = 0; i < RecordCount; i++)
   1.101 +        if (Records[i].ReadbackIndex != 0)
   1.102 +            return false;
   1.103 +    return true;
   1.104 +}
   1.105 +
   1.106 +
   1.107 +//// RecordStateReader
   1.108 +
   1.109 +void RecordStateReader::GetRecordSet(FrameTimeRecordSet& recordset)
   1.110 +{
   1.111 +    if(!Updater)
   1.112 +    {
   1.113 +        return;
   1.114 +    }
   1.115 +        
   1.116 +    recordset = Updater->SharedLatencyTestState.GetState();
   1.117 +    return;
   1.118 +}
   1.119 +
   1.120 +
   1.121 +}} // namespace OVR::Util