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https://github.com/LMMS/lmms.git
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7227c89847
This PR places all LMMS symbols into namespaces to eliminate any potential future name collisions between LMMS and third-party modules.
Also, this PR changes back `LmmsCore` to `Engine`, reverting c519921306 .
Co-authored-by: allejok96 <allejok96@gmail.com>
124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
/*
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* Analyzer.cpp - definition of Analyzer class.
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*
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* Copyright (c) 2019 Martin Pavelek <he29/dot/HS/at/gmail/dot/com>
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*
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* Based partially on Eq plugin code,
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* Copyright (c) 2014-2017, David French <dave/dot/french3/at/googlemail/dot/com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "Analyzer.h"
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#ifdef SA_DEBUG
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#include <chrono>
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#include <iostream>
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#endif
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#include "embed.h"
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#include "lmms_basics.h"
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#include "plugin_export.h"
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namespace lmms
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{
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extern "C" {
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Plugin::Descriptor PLUGIN_EXPORT analyzer_plugin_descriptor =
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{
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"spectrumanalyzer",
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"Spectrum Analyzer",
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QT_TRANSLATE_NOOP("PluginBrowser", "A graphical spectrum analyzer."),
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"Martin Pavelek <he29/dot/HS/at/gmail/dot/com>",
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0x0112,
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Plugin::Effect,
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new PluginPixmapLoader("logo"),
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nullptr,
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nullptr,
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};
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}
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Analyzer::Analyzer(Model *parent, const Plugin::Descriptor::SubPluginFeatures::Key *key) :
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Effect(&analyzer_plugin_descriptor, parent, key),
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m_processor(&m_controls),
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m_controls(this),
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m_processorThread(m_processor, m_inputBuffer),
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// Buffer is sized to cover 4* the current maximum LMMS audio buffer size,
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// so that it has some reserve space in case data processor is busy.
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m_inputBuffer(4 * m_maxBufferSize)
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{
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m_processorThread.start();
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}
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Analyzer::~Analyzer()
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{
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m_processor.terminate();
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m_inputBuffer.wakeAll();
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m_processorThread.wait();
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}
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// Take audio data and pass them to the spectrum processor.
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bool Analyzer::processAudioBuffer(sampleFrame *buffer, const fpp_t frame_count)
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{
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// Measure time spent in audio thread; both average and peak should be well under 1 ms.
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#ifdef SA_DEBUG
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unsigned int audio_time = std::chrono::high_resolution_clock::now().time_since_epoch().count();
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if (audio_time - m_last_dump_time > 5000000000) // print every 5 seconds
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{
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std::cout << "Analyzer audio thread: " << m_sum_execution / m_dump_count << " ms avg / "
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<< m_max_execution << " ms peak." << std::endl;
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m_last_dump_time = audio_time;
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m_sum_execution = m_max_execution = m_dump_count = 0;
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}
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#endif
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if (!isEnabled() || !isRunning ()) {return false;}
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// Skip processing if the controls dialog isn't visible, it would only waste CPU cycles.
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if (m_controls.isViewVisible())
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{
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// To avoid processing spikes on audio thread, data are stored in
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// a lockless ringbuffer and processed in a separate thread.
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m_inputBuffer.write(buffer, frame_count, true);
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}
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#ifdef SA_DEBUG
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audio_time = std::chrono::high_resolution_clock::now().time_since_epoch().count() - audio_time;
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m_dump_count++;
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m_sum_execution += audio_time / 1000000.0;
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if (audio_time / 1000000.0 > m_max_execution) {m_max_execution = audio_time / 1000000.0;}
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#endif
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return isRunning();
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}
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extern "C" {
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// needed for getting plugin out of shared lib
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PLUGIN_EXPORT Plugin *lmms_plugin_main(Model *parent, void *data)
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{
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return new Analyzer(parent, static_cast<const Plugin::Descriptor::SubPluginFeatures::Key *>(data));
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}
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}
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} // namespace lmms
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