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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
Audacity: A Digital Audio Editor
FrameStatistics.cpp
Dmitry Vedenko
**********************************************************************/
#include "FrameStatistics.h"
#include <algorithm>
#include <numeric>
namespace
{
FrameStatistics& GetInstance() noexcept
{
static FrameStatistics frameStatistics;
return frameStatistics;
}
}
FrameStatistics::Stopwatch::~Stopwatch() noexcept
{
GetInstance().AddEvent(mSection, FrameStatistics::Clock::now() - mStart);
}
FrameStatistics::Stopwatch::Stopwatch(SectionID section) noexcept
: mSection(section)
, mStart(FrameStatistics::Clock::now())
{
}
FrameStatistics::Duration
FrameStatistics::Section::GetLastDuration() const noexcept
{
return mLastDuration;
}
FrameStatistics::Duration
FrameStatistics::Section::GetMinDuration() const noexcept
{
return mMinDuration;
}
FrameStatistics::Duration
FrameStatistics::Section::GetMaxDuration() const noexcept
{
return mMaxDuration;
}
FrameStatistics::Duration
FrameStatistics::Section::GetAverageDuration() const noexcept
{
return mAvgDuration;
}
size_t FrameStatistics::Section::GetEventsCount() const noexcept
{
return mEventsCount;
}
void FrameStatistics::Section::AddEvent(Duration duration) noexcept
{
++mEventsCount;
mLastDuration = duration;
mMinDuration = std::min(mMinDuration, duration);
mMaxDuration = std::max(mMaxDuration, duration);
// Kernel is initialized with zeroes
mAvgAccum = mAvgAccum - mFilteringKernel[mNextIndex] + duration;
mFilteringKernel[mNextIndex] = duration;
mNextIndex = (mNextIndex + 1) % KERNEL_SIZE;
if (mKernelItems < KERNEL_SIZE)
++mKernelItems;
mAvgDuration = mAvgAccum / mKernelItems;
}
FrameStatistics::Stopwatch
FrameStatistics::CreateStopwatch(SectionID section) noexcept
{
// New frame has started
if (section == SectionID::TrackPanel)
{
auto& instance = GetInstance();
instance.mSections[size_t(SectionID::WaveformView)] = {};
instance.mSections[size_t(SectionID::WaveDataCache)] = {};
instance.mSections[size_t(SectionID::WaveBitmapCachePreprocess)] = {};
instance.mSections[size_t(SectionID::WaveBitmapCache)] = {};
}
return Stopwatch(section);
}
const FrameStatistics::Section&
FrameStatistics::GetSection(SectionID section) noexcept
{
if (section < SectionID::Count)
return GetInstance().mSections[size_t(section)];
static Section fakeSection;
return fakeSection;
}
Observer::Subscription
FrameStatistics::Subscribe(UpdatePublisher::Callback callback)
{
return GetInstance().mUpdatePublisher.Subscribe(std::move(callback));
}
void FrameStatistics::AddEvent(SectionID section, Duration duration)
{
if (section < SectionID::Count)
{
GetInstance().mSections[size_t(section)].AddEvent(duration);
GetInstance().mUpdatePublisher.Invoke(section);
}
}
void FrameStatistics::UpdatePublisher::Invoke(FrameStatistics::SectionID id)
{
Publish(id);
}
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