mirror of
https://github.com/LMMS/lmms.git
synced 2026-03-04 22:26:07 -05:00
2a66e83f53
Implementation of the Lv2 core, except for CV ports. No features or extensions are supported yet. You can now generate sound using Lv2 instruments (restricted to non-piano) or effects. For an explenation about the new classes, see Lv2Manager.h
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/*
|
|
* Lv2Effect.cpp - implementation of LV2 effect
|
|
*
|
|
* Copyright (c) 2018-2020 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 <lv2.h>
|
|
|
|
#include "Lv2SubPluginFeatures.h"
|
|
|
|
#include "embed.h"
|
|
#include "plugin_export.h"
|
|
|
|
|
|
|
|
|
|
Plugin::Descriptor PLUGIN_EXPORT lv2effect_plugin_descriptor =
|
|
{
|
|
STRINGIFY(PLUGIN_NAME),
|
|
"LV2",
|
|
QT_TRANSLATE_NOOP("pluginBrowser",
|
|
"plugin for using arbitrary LV2-effects inside LMMS."),
|
|
"Johannes Lorenz <jlsf2013$$$users.sourceforge.net, $$$=@>",
|
|
0x0100,
|
|
Plugin::Effect,
|
|
new PluginPixmapLoader("logo"),
|
|
nullptr,
|
|
new Lv2SubPluginFeatures(Plugin::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::mixer()->framesPerPeriod())
|
|
{
|
|
}
|
|
|
|
|
|
|
|
|
|
bool Lv2Effect::processAudioBuffer(sampleFrame *buf, const fpp_t frames)
|
|
{
|
|
if (!isEnabled() || !isRunning()) { return false; }
|
|
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.copyBuffersToLmms(m_tmpOutputSmps.data(), frames);
|
|
|
|
double outSum = .0;
|
|
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];
|
|
double l = static_cast<double>(buf[f][0]);
|
|
double r = static_cast<double>(buf[f][1]);
|
|
outSum += l*l + r*r;
|
|
}
|
|
checkGate(outSum / frames);
|
|
|
|
return isRunning();
|
|
}
|
|
|
|
|
|
|
|
|
|
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;
|
|
Lv2Effect* eff = new Lv2Effect(_parent, static_cast<const KeyType*>(_data));
|
|
if (!eff->isValid()) { delete eff; eff = nullptr; }
|
|
return eff;
|
|
}
|
|
|
|
}
|