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e637495489
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1352 0778d3d1-df1d-0410-868b-ea421aaaa00d
141 lines
3.4 KiB
C++
141 lines
3.4 KiB
C++
/*
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* stereo_matrix.cpp - stereo-matrix-effect-plugin
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*
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* Copyright (c) 2008 Paul Giblock <drfaygo/at/gmail/dot/com>
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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 "peak_controller.h"
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#include "peak_controller_effect.h"
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#undef SINGLE_SOURCE_COMPILE
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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( 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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} ;
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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_effectId( ++peakController::s_lastEffectId ),
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m_peakControls( this ),
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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 processing
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// 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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float sum = 0;
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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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sum += (_buf[i][0]+_buf[i][0]) * (_buf[i][1]+_buf[i][1]);
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_buf[i][0] = _buf[i][1] = 0.0f;
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}
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}
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else
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{
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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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}
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m_lastSample = c.m_baseModel.value() + c.m_amountModel.value() * sqrtf( 0.5f * sum / _frames );
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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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