mirror of
https://github.com/LMMS/lmms.git
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8c9a9dd14c
Most files and most of the core classes and their methods have been renamed to match new coding style conventions: 391 files changed, 25400 insertions(+), 25598 deletions(-) Furthermore splitted some files where model and view classes were declared or implemented together in the same file. Should be tested thoroughly as I might have missed renaming some virtual methods or SIGNAL/SLOT parameters.
161 lines
4.0 KiB
C++
161 lines
4.0 KiB
C++
/*
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* peak_controller_effect.cpp - PeakController effect plugin
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*
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* Copyright (c) 2008 Paul Giblock <drfaygo/at/gmail/dot/com>
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* Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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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 "Controller.h"
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#include "song.h"
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#include "PeakController.h"
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#include "peak_controller_effect.h"
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#include "embed.cpp"
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extern "C"
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{
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Plugin::Descriptor PLUGIN_EXPORT peakcontrollereffect_plugin_descriptor =
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{
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STRINGIFY( PLUGIN_NAME ),
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"Peak Controller",
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QT_TRANSLATE_NOOP( "pluginBrowser",
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"Plugin for controlling knobs with sound peaks" ),
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"Paul Giblock <drfaygo/at/gmail.com>",
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0x0100,
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Plugin::Effect,
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new PluginPixmapLoader( "logo" ),
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NULL,
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NULL
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} ;
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}
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// We have to keep a list of all the PeakController effects so that we can save
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// an peakEffect-ID to the project. This ID is referenced in the PeakController
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// settings and is used to set the PeakControllerEffect pointer upon load
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//QVector<PeakControllerEffect *> PeakControllerEffect::s_effects;
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PeakControllerEffect::PeakControllerEffect(
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Model * _parent,
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const Descriptor::SubPluginFeatures::Key * _key ) :
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Effect( &peakcontrollereffect_plugin_descriptor, _parent, _key ),
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m_peakControls( this ),
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m_lastSample( 0 ),
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m_lastRMS( -1 ),
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m_effectId( ++PeakController::s_lastEffectId ),
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m_autoController( NULL )
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{
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m_autoController = new PeakController( engine::getSong(), this );
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engine::getSong()->addController( m_autoController );
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PeakController::s_effects.append( this );
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}
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PeakControllerEffect::~PeakControllerEffect()
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{
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int idx = PeakController::s_effects.indexOf( this );
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if( idx >= 0 )
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{
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PeakController::s_effects.remove( idx );
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}
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}
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bool PeakControllerEffect::processAudioBuffer( sampleFrame * _buf,
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const fpp_t _frames )
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{
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PeakControllerEffectControls & c = m_peakControls;
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// This appears to be used for determining whether or not to continue
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// processing audio with this effect
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if( !isEnabled() || !isRunning() )
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{
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return false;
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}
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// RMS:
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double sum = 0;
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for( int i = 0; i < _frames; ++i )
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{
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sum += _buf[i][0]*_buf[i][0] + _buf[i][1]*_buf[i][1];
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}
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if( c.m_muteModel.value() )
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{
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for( int i = 0; i < _frames; ++i )
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{
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_buf[i][0] = _buf[i][1] = 0.0f;
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}
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}
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float curRMS = sqrtf( sum / _frames );
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const float origRMS = curRMS;
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if( m_lastRMS < 0 )
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{
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m_lastRMS = curRMS;
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}
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const float v = ( curRMS >= m_lastRMS ) ?
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c.m_attackModel.value() :
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c.m_decayModel.value();
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const float a = sqrtf( sqrtf( v ) );
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curRMS = (1-a)*curRMS + a*m_lastRMS;
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m_lastSample = c.m_baseModel.value() + c.m_amountModel.value()*curRMS;
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m_lastRMS = curRMS;
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// on greater buffer sizes our LP is updated less frequently, therfore
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// replay a certain number of passes so the LP state is as if it was
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// updated N times with buffer-size 1/N
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const int timeOversamp = (4*_frames) / DEFAULT_BUFFER_SIZE-1;
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for( int i = 0; i < timeOversamp; ++i )
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{
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m_lastRMS = (1-a)*origRMS + a*m_lastRMS;
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}
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//checkGate( out_sum / _frames );
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return isRunning();
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}
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extern "C"
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{
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// neccessary for getting instance out of shared lib
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Plugin * PLUGIN_EXPORT lmms_plugin_main( Model * _parent, void * _data )
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{
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return new PeakControllerEffect( _parent,
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static_cast<const Plugin::Descriptor::SubPluginFeatures::Key *>(
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_data ) );
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}
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}
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