Files
lmms/plugins/Lv2Effect/Lv2Effect.cpp
Dalton Messmer 18252088ba Refactor Effect processing (#7484)
* Move common effect processing code to wrapper method

- Introduce `processImpl` and `sleepImpl` methods, and adapt each effect
plugin to use them
- Use double for RMS out sum in Compressor and LOMM
- Run `checkGate` for GranularPitchShifterEffect
- Minor changes to LadspaEffect
- Remove dynamic allocations and VLAs from VstEffect's process method
- Some minor style/formatting fixes

* Fix VstEffect regression

* GranularPitchShifterEffect should not call `checkGate`

* Apply suggestions from code review

Co-authored-by: saker <sakertooth@gmail.com>

* Follow naming convention for local variables

* Add `MAXIMUM_BUFFER_SIZE` and use it in VstEffect

* Revert "GranularPitchShifterEffect should not call `checkGate`"

This reverts commit 67526f0ffe.

* VstEffect: Simplify setting "Don't Run" state

* Rename `sleepImpl` to `processBypassedImpl`

* Use `MAXIMUM_BUFFER_SIZE` in SetupDialog

* Pass `outSum` as out parameter; Fix LadspaEffect mutex

* Move outSum calculations to wrapper method

* Fix Linux build

* Oops

* Apply suggestions from code review

Co-authored-by: Johannes Lorenz <1042576+JohannesLorenz@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: saker <sakertooth@gmail.com>

---------

Co-authored-by: saker <sakertooth@gmail.com>
Co-authored-by: Johannes Lorenz <1042576+JohannesLorenz@users.noreply.github.com>
2024-09-20 20:00:36 -04:00

119 lines
2.8 KiB
C++

/*
* Lv2Effect.cpp - implementation of LV2 effect
*
* Copyright (c) 2018-2023 Johannes Lorenz <jlsf2013$users.sourceforge.net, $=@>
*
* This file is part of LMMS - https://lmms.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#include "Lv2Effect.h"
#include <QDebug>
#include "Lv2SubPluginFeatures.h"
#include "embed.h"
#include "plugin_export.h"
namespace lmms
{
extern "C"
{
Plugin::Descriptor PLUGIN_EXPORT lv2effect_plugin_descriptor =
{
LMMS_STRINGIFY(PLUGIN_NAME),
"LV2",
QT_TRANSLATE_NOOP("PluginBrowser",
"plugin for using arbitrary LV2-effects inside LMMS."),
"Johannes Lorenz <jlsf2013$$$users.sourceforge.net, $$$=@>",
0x0100,
Plugin::Type::Effect,
new PluginPixmapLoader("logo"),
nullptr,
new Lv2SubPluginFeatures(Plugin::Type::Effect)
};
}
Lv2Effect::Lv2Effect(Model* parent, const Descriptor::SubPluginFeatures::Key *key) :
Effect(&lv2effect_plugin_descriptor, parent, key),
m_controls(this, key->attributes["uri"]),
m_tmpOutputSmps(Engine::audioEngine()->framesPerPeriod())
{
}
Effect::ProcessStatus Lv2Effect::processImpl(SampleFrame* buf, const fpp_t frames)
{
Q_ASSERT(frames <= static_cast<fpp_t>(m_tmpOutputSmps.size()));
m_controls.copyBuffersFromLmms(buf, frames);
m_controls.copyModelsFromLmms();
// m_pluginMutex.lock();
m_controls.run(frames);
// m_pluginMutex.unlock();
m_controls.copyModelsToLmms();
m_controls.copyBuffersToLmms(m_tmpOutputSmps.data(), frames);
bool corrupt = wetLevel() < 0; // #3261 - if w < 0, bash w := 0, d := 1
const float d = corrupt ? 1 : dryLevel();
const float w = corrupt ? 0 : wetLevel();
for(fpp_t f = 0; f < frames; ++f)
{
buf[f][0] = d * buf[f][0] + w * m_tmpOutputSmps[f][0];
buf[f][1] = d * buf[f][1] + w * m_tmpOutputSmps[f][1];
}
return ProcessStatus::ContinueIfNotQuiet;
}
extern "C"
{
// necessary for getting instance out of shared lib
PLUGIN_EXPORT Plugin *lmms_plugin_main(Model *_parent, void *_data)
{
using KeyType = Plugin::Descriptor::SubPluginFeatures::Key;
try {
return new Lv2Effect(_parent, static_cast<const KeyType*>(_data));
} catch (const std::runtime_error& e) {
qCritical() << e.what();
return nullptr;
}
}
}
} // namespace lmms