Tobias Doerffel
c8c5382b35
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@890 0778d3d1-df1d-0410-868b-ea421aaaa00d
173 lines
3.6 KiB
C++
173 lines
3.6 KiB
C++
#ifndef SINGLE_SOURCE_COMPILE
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/*
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* instrument.cpp - base-class for all instrument-plugins (synths, samplers etc)
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*
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* Copyright (c) 2005-2008 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 "instrument.h"
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#include "instrument_view.h"
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#include "instrument_track.h"
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#include "dummy_instrument.h"
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#include "note_play_handle.h"
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instrument::instrument( instrumentTrack * _instrument_track,
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const descriptor * _descriptor ) :
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plugin( _descriptor, NULL/* _instrument_track*/ ),
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m_instrumentTrack( _instrument_track )
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{
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}
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instrument::~instrument()
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{
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}
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void instrument::play( bool, sampleFrame * )
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{
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}
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void instrument::deleteNotePluginData( notePlayHandle * )
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{
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}
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f_cnt_t instrument::beatLen( notePlayHandle * ) const
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{
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return( 0 );
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}
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instrument * instrument::instantiate( const QString & _plugin_name,
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instrumentTrack * _instrument_track )
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{
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plugin * p = plugin::instantiate( _plugin_name, _instrument_track,
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_instrument_track );
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// check whether instantiated plugin is an instrument
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if( dynamic_cast<instrument *>( p ) != NULL )
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{
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// everything ok, so return pointer
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return( dynamic_cast<instrument *>( p ) );
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}
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// not quite... so delete plugin and return dummy instrument
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delete p;
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return( new dummyInstrument( _instrument_track ) );
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}
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bool instrument::isFromTrack( const track * _track ) const
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{
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return( m_instrumentTrack == _track );
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}
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void instrument::applyRelease( sampleFrame * buf, const notePlayHandle * _n )
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{
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const fpp_t frames = _n->framesLeftForCurrentPeriod();
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const fpp_t fpp = engine::getMixer()->framesPerPeriod();
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const f_cnt_t fl = _n->framesLeft();
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if( fl <= desiredReleaseFrames()+fpp )
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{
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for( fpp_t f = fl > desiredReleaseFrames() ?
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( tMax( fpp - desiredReleaseFrames(), 0 ) +
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fl % fpp ) : 0; f < frames; ++f )
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{
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const float fac = (float)( fl-f-1 ) /
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desiredReleaseFrames();
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for( ch_cnt_t ch = 0; ch < DEFAULT_CHANNELS; ++ch )
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{
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buf[f][ch] *= fac;
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}
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}
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}
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}
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instrumentView::instrumentView( instrument * _instrument, QWidget * _parent ) :
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pluginView( _instrument, _parent )
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{
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setModel( _instrument );
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setFixedSize( 250, 250 );
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setAttribute( Qt::WA_DeleteOnClose, TRUE );
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}
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instrumentView::~instrumentView()
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{
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if( getInstrumentTrackWindow() )
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{
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getInstrumentTrackWindow()->m_instrumentView = NULL;
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}
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}
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void instrumentView::setModel( ::model * _model, bool )
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{
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if( dynamic_cast<instrument *>( _model ) != NULL )
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{
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modelView::setModel( _model );
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getInstrumentTrackWindow()->setWindowIcon( *( model()->
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getDescriptor()->logo ) );
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connect( model(), SIGNAL( destroyed( QObject * ) ),
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this, SLOT( close() ) );
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}
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}
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instrumentTrackWindow * instrumentView::getInstrumentTrackWindow( void )
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{
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return( dynamic_cast<instrumentTrackWindow *>(
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parentWidget()->parentWidget() ) );
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}
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#endif
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