spiralsynthmodular/SpiralSound/Plugins/AmpPlugin/AmpPlugin.C

/*  SpiralSound
 *  Copyleft (C) 2001 David Griffiths <dave@pawfal.org>
 *
 *  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; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/ 
#include <math.h>
#include "AmpPlugin.h"
#include "AmpPluginGUI.h"
#include <FL/Fl_Button.h>
#include "SpiralIcon.xpm"

#define PI 3.141592654

extern "C" {
SpiralPlugin* CreateInstance()
{
	return new AmpPlugin;
}

char** GetIcon()
{
	return SpiralIcon_xpm;
}

int GetID()
{
	return 0x0009;
}
}

///////////////////////////////////////////////////////

AmpPlugin::AmpPlugin() :
m_Amp(1.0f),
m_DC(0.0f)
{
	m_PluginInfo.Name="Amp";
	m_PluginInfo.Width=120;
	m_PluginInfo.Height=110;
	m_PluginInfo.NumInputs=3;
	m_PluginInfo.NumOutputs=1;
	m_PluginInfo.PortTips.push_back("Input");	
	m_PluginInfo.PortTips.push_back("Amp CV");	
	m_PluginInfo.PortTips.push_back("DC Offset CV");	
	m_PluginInfo.PortTips.push_back("Output");
	
	m_AudioCH->Register("Amp",&m_Amp);
	m_AudioCH->Register("DC",&m_DC);	
}

AmpPlugin::~AmpPlugin()
{
}

PluginInfo &AmpPlugin::Initialise(const HostInfo *Host)
{	
	return SpiralPlugin::Initialise(Host);
}

SpiralGUIType *AmpPlugin::CreateGUI()
{
	return new AmpPluginGUI(m_PluginInfo.Width,
							 m_PluginInfo.Height,
							 this,m_AudioCH,m_HostInfo);
}

void AmpPlugin::Execute()
{
	float in;
	
	for (int n=0; n<m_HostInfo->BUFSIZE; n++)
	{
		in = GetInput(0,n);
		in *= m_Amp+GetInput(1,n);
		in += (-m_DC)+GetInput(2,n);
		SetOutput(0,n,in);	 
	}		
}
	
void AmpPlugin::Randomise()
{
}
	
void AmpPlugin::StreamOut(ostream &s)
{
	s<<m_Version<<" "<<m_Amp<<" "<<m_DC<<" ";
}

void AmpPlugin::StreamIn(istream &s)
{	
	int version;
	s>>version;
	s>>m_Amp>>m_DC;
}