/* ============================================================================== 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