mirror of
https://github.com/LMMS/lmms.git
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f742710758
Summary: * `NULL` -> `nullptr` * `gui` -> Function `getGUI()` * `pluginFactory` -> Function `getPluginFactory()` * `assert` (redefinition) -> using `NDEBUG` instead, which standard `assert` respects. * `powf` (C stdlib symbol clash) -> removed and all expansions replaced with calls to `std::pow`. * `exp10` (nonstandard function symbol clash) -> removed and all expansions replaced with calls to `std::pow`. * `PATH_DEV_DSP` -> File-scope QString of identical name and value. * `VST_SNC_SHM_KEY_FILE` -> constexpr char* with identical name and value. * `MM_ALLOC` and `MM_FREE` -> Functions with identical name and implementation. * `INVAL`, `OUTVAL`, etc. for automation nodes -> Functions with identical names and implementations. * BandLimitedWave.h: All integer constant macros replaced with constexpr ints of same name and value. * `FAST_RAND_MAX` -> constexpr int of same name and value. * `QSTR_TO_STDSTR` -> Function with identical name and equivalent implementation. * `CCONST` -> constexpr function template with identical name and implementation. * `F_OPEN_UTF8` -> Function with identical name and equivalent implementation. * `LADSPA_PATH_SEPARATOR` -> constexpr char with identical name and value. * `UI_CTRL_KEY` -> constexpr char* with identical name and value. * `ALIGN_SIZE` -> Renamed to `LMMS_ALIGN_SIZE` and converted from a macro to a constexpr size_t. * `JACK_MIDI_BUFFER_MAX` -> constexpr size_t with identical name and value. * versioninfo.h: `PLATFORM`, `MACHINE` and `COMPILER_VERSION` -> prefixed with `LMMS_BUILDCONF_` and converted from macros to constexpr char* literals. * Header guard _OSCILLOSCOPE -> renamed to OSCILLOSCOPE_H * Header guard _TIME_DISPLAY_WIDGET -> renamed to TIME_DISPLAY_WIDGET_H * C-style typecasts in DrumSynth.cpp have been replaced with `static_cast`. * constexpr numerical constants are initialized with assignment notation instead of curly brace intializers. * In portsmf, `Alg_seq::operator[]` will throw an exception instead of returning null if the operator index is out of range. Additionally, in many places, global constants that were declared as `const T foo = bar;` were changed from const to constexpr, leaving them const and making them potentially evaluable at compile time. Some macros that only appeared in single source files and were unused in those files have been removed entirely.
119 lines
3.6 KiB
C++
119 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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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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