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