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https://github.com/juce-framework/JUCE.git
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111 lines
4 KiB
C++
111 lines
4 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE 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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const SpinLock::ScopedLockType lock (mutex);
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cpuUsageProportion = 0;
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xruns = 0;
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samplesPerBlock = blockSize;
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msPerSample = (sampleRate > 0.0 && blockSize > 0) ? 1000.0 / sampleRate : 0;
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}
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void AudioProcessLoadMeasurer::registerBlockRenderTime (double milliseconds)
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{
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const SpinLock::ScopedTryLockType lock (mutex);
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if (lock.isLocked())
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registerRenderTimeLocked (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 SpinLock::ScopedTryLockType lock (mutex);
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if (lock.isLocked())
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registerRenderTimeLocked (milliseconds, numSamples);
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}
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void AudioProcessLoadMeasurer::registerRenderTimeLocked (double milliseconds, int numSamples)
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{
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if (approximatelyEqual (msPerSample, 0.0))
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return;
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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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const auto proportion = cpuUsageProportion.load();
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cpuUsageProportion = proportion + filterAmount * (usedProportion - proportion);
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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.load()); }
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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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// numSamplesInBlock should never be zero. Did you remember to call AudioProcessLoadMeasurer::reset(),
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// passing the expected samples per block?
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jassert (numSamplesInBlock);
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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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