OpenShot Audio Library | OpenShotAudio 0.4.0
Loading...
Searching...
No Matches
juce_AudioProcessLoadMeasurer.cpp
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 The code included in this file is provided under the terms of the ISC license
11 http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12 To use, copy, modify, and/or distribute this software for any purpose with or
13 without fee is hereby granted provided that the above copyright notice and
14 this permission notice appear in all copies.
15
16 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18 DISCLAIMED.
19
20 ==============================================================================
21*/
22
23namespace juce
24{
25
26AudioProcessLoadMeasurer::AudioProcessLoadMeasurer() = default;
28
30{
31 reset (0, 0);
32}
33
34void AudioProcessLoadMeasurer::reset (double sampleRate, int blockSize)
35{
36 const SpinLock::ScopedLockType lock (mutex);
37
38 cpuUsageProportion = 0;
39 xruns = 0;
40
41 samplesPerBlock = blockSize;
42 msPerSample = (sampleRate > 0.0 && blockSize > 0) ? 1000.0 / sampleRate : 0;
43}
44
46{
47 const SpinLock::ScopedTryLockType lock (mutex);
48
49 if (lock.isLocked())
50 registerRenderTimeLocked (milliseconds, samplesPerBlock);
51}
52
53void AudioProcessLoadMeasurer::registerRenderTime (double milliseconds, int numSamples)
54{
55 const SpinLock::ScopedTryLockType lock (mutex);
56
57 if (lock.isLocked())
58 registerRenderTimeLocked (milliseconds, numSamples);
59}
60
61void AudioProcessLoadMeasurer::registerRenderTimeLocked (double milliseconds, int numSamples)
62{
63 if (approximatelyEqual (msPerSample, 0.0))
64 return;
65
66 const auto maxMilliseconds = numSamples * msPerSample;
67 const auto usedProportion = milliseconds / maxMilliseconds;
68 const auto filterAmount = 0.2;
69 const auto proportion = cpuUsageProportion.load();
70 cpuUsageProportion = proportion + filterAmount * (usedProportion - proportion);
71
72 if (milliseconds > maxMilliseconds)
73 ++xruns;
74}
75
76double AudioProcessLoadMeasurer::getLoadAsProportion() const { return jlimit (0.0, 1.0, cpuUsageProportion.load()); }
78
79int AudioProcessLoadMeasurer::getXRunCount() const { return xruns; }
80
81AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p)
82 : ScopedTimer (p, p.samplesPerBlock)
83{
84}
85
86AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p, int numSamplesInBlock)
87 : owner (p), startTime (Time::getMillisecondCounterHiRes()), samplesInBlock (numSamplesInBlock)
88{
89 // numSamplesInBlock should never be zero. Did you remember to call AudioProcessLoadMeasurer::reset(),
90 // passing the expected samples per block?
91 jassert (numSamplesInBlock);
92}
93
94AudioProcessLoadMeasurer::ScopedTimer::~ScopedTimer()
95{
96 owner.registerRenderTime (Time::getMillisecondCounterHiRes() - startTime, samplesInBlock);
97}
98
99} // namespace juce
void registerBlockRenderTime(double millisecondsTaken)
void registerRenderTime(double millisecondsTaken, int numSamples)
bool isLocked() const noexcept
GenericScopedTryLock< SpinLock > ScopedTryLockType
GenericScopedLock< SpinLock > ScopedLockType
static double getMillisecondCounterHiRes() noexcept