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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2017 - ROLI Ltd.
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
27th April 2017).
End User License Agreement: www.juce.com/juce-5-licence
Privacy Policy: www.juce.com/juce-5-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
AudioProcessLoadMeasurer::AudioProcessLoadMeasurer() {}
AudioProcessLoadMeasurer::~AudioProcessLoadMeasurer() {}
void AudioProcessLoadMeasurer::reset()
{
reset (0, 0);
}
void AudioProcessLoadMeasurer::reset (double sampleRate, int blockSize)
{
cpuUsageMs = 0;
xruns = 0;
if (sampleRate > 0.0 && blockSize > 0)
{
msPerBlock = 1000.0 * blockSize / sampleRate;
timeToCpuScale = (msPerBlock > 0.0) ? (1.0 / msPerBlock) : 0.0;
}
else
{
msPerBlock = 0;
timeToCpuScale = 0;
}
}
void AudioProcessLoadMeasurer::registerBlockRenderTime (double milliseconds)
{
const double filterAmount = 0.2;
cpuUsageMs += filterAmount * (milliseconds - cpuUsageMs);
if (milliseconds > msPerBlock)
++xruns;
}
double AudioProcessLoadMeasurer::getLoadAsProportion() const { return jlimit (0.0, 1.0, timeToCpuScale * cpuUsageMs); }
double AudioProcessLoadMeasurer::getLoadAsPercentage() const { return 100.0 * getLoadAsProportion(); }
int AudioProcessLoadMeasurer::getXRunCount() const { return xruns; }
AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p)
: owner (p), startTime (Time::getMillisecondCounterHiRes())
{
}
AudioProcessLoadMeasurer::ScopedTimer::~ScopedTimer()
{
owner.registerBlockRenderTime (Time::getMillisecondCounterHiRes() - startTime);
}
} // namespace juce
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