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Mixer: Add a Mono Panner module.

This commit is contained in:
Jonathan Moore Liles 2010-01-17 21:16:31 -06:00
parent 58ca57c64c
commit 078aa38aaf
4 changed files with 130 additions and 1 deletions
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2
Mixer/Gain_Module.C
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@ -18,7 +18,7 @@
/*******************************************************************************/
#include "Gain_Module.H"
#include <FL/Fl_Single_Window.H>
#include <math.h>
#include <dsp.h>

85
Mixer/Mono_Pan_Module.C Normal file
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@ -0,0 +1,85 @@
/*******************************************************************************/
/* Copyright (C) 2009 Jonathan Moore Liles */
/* */
/* 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 the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#include "Mono_Pan_Module.H"
#include <math.h>
#include <dsp.h>
Mono_Pan_Module::Mono_Pan_Module ( )
: Module ( 50, 24, name() )
{
Port p( this, Port::INPUT, Port::CONTROL, "Pan" );
p.hints.type = Port::Hints::LOGARITHMIC;
p.hints.ranged = true;
p.hints.minimum = -1.0f;
p.hints.maximum = 1.0f;
p.hints.default_value = 0.0f;
p.connect_to( new float );
p.control_value( p.hints.default_value );
add_port( p );
add_port( Port( this, Port::INPUT, Port::AUDIO ) );
add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
end();
log_create();
}
Mono_Pan_Module::~Mono_Pan_Module ( )
{
delete (float*)control_input[0].buffer();
log_destroy();
}
bool
Mono_Pan_Module::configure_inputs ( int n )
{
return true;
}
void
Mono_Pan_Module::process ( void )
{
const float g = control_input[0].control_value();
// this is obviously wrong, but it produces a strange false stereo effect.
// const float lg = (0.0f - g);
// const float rg = g;
const float lg = (0.0f - g) + 1.0f;
const float rg = g + 1.0f;
if ( audio_input[0].connected() &&
audio_output[0].connected() &&
audio_output[1].connected() )
{
buffer_copy_and_apply_gain( (sample_t*)audio_output[1].buffer(), (sample_t*)audio_input[0].buffer(), nframes(), rg );
buffer_apply_gain( (sample_t*)audio_output[0].buffer(), nframes(), lg );
}
}

42
Mixer/Mono_Pan_Module.H Normal file
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@ -0,0 +1,42 @@
/*******************************************************************************/
/* Copyright (C) 2009 Jonathan Moore Liles */
/* */
/* 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 the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#pragma once
#include "Module.H"
class Mono_Pan_Module : public Module
{
public:
Mono_Pan_Module ( );
virtual ~Mono_Pan_Module ( );
const char *name ( void ) const { return "Mono Pan"; }
int can_support_inputs ( int n ) { return ( n == 1 ) ? 2 : -1; }
bool configure_inputs ( int n );
LOG_CREATE_FUNC( Mono_Pan_Module );
protected:
virtual void process ( void );
};

2
Mixer/main.C
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@ -52,6 +52,7 @@ Fl_Single_Window *main_window;
#include "Meter_Module.H"
#include "Meter_Indicator_Module.H"
#include "Controller_Module.H"
#include "Mono_Pan_Module.H"
#include "Chain.H"
@ -82,6 +83,7 @@ main ( int argc, char **argv )
LOG_REGISTER_CREATE( Gain_Module );
LOG_REGISTER_CREATE( Meter_Module );
LOG_REGISTER_CREATE( JACK_Module );
LOG_REGISTER_CREATE( Mono_Pan_Module );
LOG_REGISTER_CREATE( Meter_Indicator_Module );
LOG_REGISTER_CREATE( Controller_Module );