88 lines
2.8 KiB
C++
88 lines
2.8 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) 2020 - Raw Material Software Limited
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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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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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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() = default;
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AudioProcessLoadMeasurer::~AudioProcessLoadMeasurer() = default;
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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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cpuUsageProportion = 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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msPerSample = 1000.0 / sampleRate;
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timeToCpuScale = (msPerSample > 0.0) ? (1.0 / msPerSample) : 0.0;
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}
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else
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{
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msPerSample = 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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registerRenderTime (milliseconds, samplesPerBlock);
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}
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void AudioProcessLoadMeasurer::registerRenderTime (double milliseconds, int numSamples)
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{
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const auto maxMilliseconds = numSamples * msPerSample;
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const auto usedProportion = milliseconds / maxMilliseconds;
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const auto filterAmount = 0.2;
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cpuUsageProportion += filterAmount * (usedProportion - cpuUsageProportion);
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if (milliseconds > maxMilliseconds)
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++xruns;
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}
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double AudioProcessLoadMeasurer::getLoadAsProportion() const { return jlimit (0.0, 1.0, cpuUsageProportion); }
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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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: ScopedTimer (p, p.samplesPerBlock)
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{
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}
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AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p, int numSamplesInBlock)
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: owner (p), startTime (Time::getMillisecondCounterHiRes()), samplesInBlock (numSamplesInBlock)
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{
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}
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AudioProcessLoadMeasurer::ScopedTimer::~ScopedTimer()
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{
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owner.registerRenderTime (Time::getMillisecondCounterHiRes() - startTime, samplesInBlock);
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}
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} // namespace juce
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