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/*
* VstEffect.cpp - class for handling VST effect plugins
*
* Copyright (c) 2006-2014 Tobias Doerffel <tobydox/at/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 <QMessageBox>
#include "VstEffect.h"
#include "GuiApplication.h"
#include "Song.h"
#include "TextFloat.h"
#include "VstSubPluginFeatures.h"
#include "embed.cpp"
extern "C"
{
Plugin::Descriptor PLUGIN_EXPORT vsteffect_plugin_descriptor =
{
STRINGIFY( PLUGIN_NAME ),
"VST",
QT_TRANSLATE_NOOP( "pluginBrowser",
"plugin for using arbitrary VST effects inside LMMS." ),
"Tobias Doerffel <tobydox/at/users.sf.net>",
0x0200,
Plugin::Effect,
new PluginPixmapLoader( "logo" ),
NULL,
new VstSubPluginFeatures( Plugin::Effect )
} ;
}
VstEffect::VstEffect( Model * _parent,
const Descriptor::SubPluginFeatures::Key * _key ) :
Effect( &vsteffect_plugin_descriptor, _parent, _key ),
m_pluginMutex(),
m_key( *_key ),
m_vstControls( this )
{
if( !m_key.attributes["file"].isEmpty() )
{
openPlugin( m_key.attributes["file"] );
}
setDisplayName( m_key.attributes["file"].section( ".dll", 0, 0 ).isEmpty()
? m_key.name : m_key.attributes["file"].section( ".dll", 0, 0 ) );
}
VstEffect::~VstEffect()
{
}
bool VstEffect::processAudioBuffer( sampleFrame * _buf, const fpp_t _frames )
{
if( !isEnabled() || !isRunning () )
{
return false;
}
if( m_plugin )
{
const float d = dryLevel();
#ifdef __GNUC__
sampleFrame buf[_frames];
#else
sampleFrame * buf = new sampleFrame[_frames];
#endif
memcpy( buf, _buf, sizeof( sampleFrame ) * _frames );
if (m_pluginMutex.tryLock(Engine::getSong()->isExporting() ? -1 : 0))
{
m_plugin->process( buf, buf );
m_pluginMutex.unlock();
}
double out_sum = 0.0;
const float w = wetLevel();
for( fpp_t f = 0; f < _frames; ++f )
{
_buf[f][0] = w*buf[f][0] + d*_buf[f][0];
_buf[f][1] = w*buf[f][1] + d*_buf[f][1];
}
for( fpp_t f = 0; f < _frames; ++f )
{
out_sum += _buf[f][0]*_buf[f][0] + _buf[f][1]*_buf[f][1];
}
#ifndef __GNUC__
delete[] buf;
#endif
checkGate( out_sum / _frames );
}
return isRunning();
}
void VstEffect::openPlugin( const QString & _plugin )
{
TextFloat * tf = NULL;
if( gui )
{
tf = TextFloat::displayMessage(
VstPlugin::tr( "Loading plugin" ),
VstPlugin::tr( "Please wait while loading VST plugin..." ),
PLUGIN_NAME::getIconPixmap( "logo", 24, 24 ), 0 );
}
QMutexLocker ml( &m_pluginMutex ); Q_UNUSED( ml );
m_plugin = QSharedPointer<VstPlugin>(new VstPlugin( _plugin ));
if( m_plugin->failed() )
{
m_plugin.clear();
delete tf;
collectErrorForUI( VstPlugin::tr( "The VST plugin %1 could not be loaded." ).arg( _plugin ) );
return;
}
delete tf;
m_key.attributes["file"] = _plugin;
}
extern "C"
{
// necessary for getting instance out of shared lib
Plugin * PLUGIN_EXPORT lmms_plugin_main( Model * _parent, void * _data )
{
return new VstEffect( _parent,
static_cast<const Plugin::Descriptor::SubPluginFeatures::Key *>(
_data ) );
}
}
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