Implement Mixer.

Makefile

@@ -96,9 +96,10 @@ DONE := $(BOLD)$(GREEN)done$(SGR0)
 include FL/makefile.inc
 include nonlib/makefile.inc
 include Timeline/makefile.inc
+include Mixer/makefile.inc
 
-SRCS:=$(FL_SRCS) $(nonlib_SRCS) $(Timeline_SRCS)
-OBJS:=$(FL_OBJS) $(nonlib_OBJS) $(Timeline_OBJS)
+SRCS:=$(FL_SRCS) $(nonlib_SRCS) $(Timeline_SRCS) $(Mixer_SRCS)
+OBJS:=$(FL_OBJS) $(nonlib_OBJS) $(Timeline_OBJS) $(Mixer_OBJS)
 
 # FIXME: isn't there a better way?
 $(OBJS): .config Makefile
@@ -110,13 +111,14 @@ TAGS: $(SRCS)
 ifneq ($(CALCULATING),yes)
 	@ echo -n Calculating dependencies...
 	@ makedepend -f- -- $(CXXFLAGS) $(INCLUDES) -- $(SRCS) 2>/dev/null > .deps  && echo $(DONE)
+	# @ gcc -M $(CXXFLAGS) $(INCLUDES) $(SRCS) > .deps && echo $(DONE)
 endif
 
 
 install: all
 	@ echo -n "Installing..."
 	@ install Timeline/timeline $(prefix)/bin/non-daw
-#	@ install Mixer/mixer $(prefix)/bin/non-mixer
+	@ install Mixer/mixer $(prefix)/bin/non-mixer
 	@ mkdir -p $(SYSTEM_PATH)
 	@ mkdir -p $(PIXMAP_PATH)
 	@ cp pixmaps/*.png $(PIXMAP_PATH)
@@ -125,7 +127,7 @@ install: all
 ifneq ($(USE_DEBUG),yes)
 	@ echo -n "Stripping..."
 	@ strip $(prefix)/bin/non-daw
-#	@ strip $(prefix)/bin/non-mixer
+	@ strip $(prefix)/bin/non-mixer
 	@ echo "$(DONE)"
 endif
 
@@ -134,7 +136,7 @@ clean_deps:
 
 .PHONEY: clean config depend clean_deps
 
-clean: FL_clean nonlib_clean Timeline_clean
+clean: FL_clean nonlib_clean Timeline_clean Mixer_clean
 
 dist:
 	git archive --prefix=non-daw-$(VERSION)/ v$(VERSION) | bzip2 > non-daw-$(VERSION).tar.bz2

Mixer/Chain.C

@@ -0,0 +1,583 @@
+
+/*******************************************************************************/
+/* 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.  */
+/*******************************************************************************/
+
+/* Filter chain. This would all be much simpler if we chose not to
+ * allow non 1:1 plugins to be mixed in a single chain...
+ *
+ * Supporting the mixture requires duplicating some inputs (to satisfy
+ * stereo input plugins reading mono outputs) and duplicating some
+ * plugins (to satisfy mono input plugins reading stereo outputs).
+ *
+ * Basically, what this means is that the intermediate number of
+ * buffers need not have any relation to the starting and ending
+ * buffer count. (Picture an ambisonic panner going into an ambisonic
+ * decoder (1:6:2).
+ *
+ * The chain will allocate enough buffers to hold data from the
+ * maximum number of channels used by a contained module.
+ *
+ * The process thread goes as follows:
+ *
+ * 1. Copy inputs to chain buffers.
+ *
+ * 2. process() each module in turn (reusing buffers in-place) (inputs
+ * will be copied or plugins duplicated as necessary)
+ *
+ * 3. Copy chain buffers to outputs.
+ *
+ * For chains where the number of channels never exceeds the maximum
+ * of the number of inputs and outputs, the first copy can be
+ * optimized out.
+ */
+
+#include "Chain.H"
+
+#include "Module.H"
+#include "Meter_Module.H"
+#include "JACK_Module.H"
+#include "Gain_Module.H"
+#include "Plugin_Module.H"
+
+#include <Fl/Fl_Box.H>
+#include <FL/Fl_Menu.H>
+#include <FL/fl_ask.H>
+
+#include <stdlib.h>
+#include "util/debug.h"
+
+#include <stdio.h>
+
+#include <FL/fl_draw.H>
+
+#include "Engine/Engine.H"
+#include <FL/Fl_Tabs.H>
+#include "FL/Fl_Flowpack.H"
+#include "FL/Fl_Scroll.H"
+#include <string.h>
+
+Chain::Chain ( int X, int Y, int W, int H, const char *L ) :
+    Fl_Group( X, Y, W, H, L)
+{
+    _outs = 1;
+    _ins = 1;
+
+    _configure_outputs_callback = NULL;
+
+    _name = NULL;
+
+    { Fl_Tabs *o = tabs = new Fl_Tabs( X, Y, W, H );
+        { Fl_Group *o = new Fl_Group( X, Y + 24, W, H - 24, "Chain" );
+            o->box( FL_FLAT_BOX );
+            o->labelsize( 9 );
+            { Fl_Pack *o = modules_pack = new Fl_Pack( X, Y + 24, W, H - 24 );
+                o->type( Fl_Pack::VERTICAL );
+                o->spacing( 10 );
+                o->end();
+            }
+            o->end();
+        }
+        { Fl_Group *o = new Fl_Group( X, Y + 24, W, H - 24, "Controls" );
+            o->labelsize( 9 );
+            o->hide();
+            { Fl_Scroll *o = new Fl_Scroll( X, Y + 24, W, H - 24 );
+                o->type( Fl_Scroll::VERTICAL );
+                { Fl_Flowpack *o = controls_pack = new Fl_Flowpack( X, Y + 24, W, H - 24 );
+                    o->hspacing( 10 );
+                    o->vspacing( 10 );
+//                    o->box( FL_FLAT_BOX );
+//                    o->color( FL_RED );
+                    o->end();
+                    Fl_Group::current()->resizable( o );
+                }
+                o->end();
+                Fl_Group::current()->resizable( o );
+            }
+            o->end();
+            Fl_Group::current()->resizable( o );
+        }
+        o->end();
+        Fl_Group::current()->resizable( o );
+    }
+
+    end();
+}
+
+/* Fill this chain with JACK I/O, Gain, and Meter modules. */
+void
+Chain::initialize_with_default ( void )
+{
+
+    {
+        JACK_Module *jm = new JACK_Module( 50, 50, "JACK" );
+        jm->chain( this );
+        jm->configure_outputs( 1 );
+
+        jm->initialize();
+        jm->color( FL_BLACK );
+        insert( NULL, jm );
+    }
+
+    {
+        JACK_Module *m = new JACK_Module( 50, 50, "JACK" );
+        m->chain( this );
+        m->initialize();
+        m->color( FL_BLACK );
+        insert( NULL, m );
+    }
+}
+
+
+void Chain::cb_handle(Fl_Widget* o) {
+    /* if ( o == head_button ) */
+    /* { */
+    /*     Module *m = Module::pick_plugin(); */
+
+    /*     insert_before( (Module*)modules_pack->child( 0 ), m ); */
+    /* } */
+    /* else if ( o == tail_button ) */
+    /* { */
+    /*     Module *m = Module::pick_plugin(); */
+    /*     insert_before( 0, m ); */
+    /* } */
+}
+
+void Chain::cb_handle(Fl_Widget* o, void* v) {
+    ((Chain*)(v))->cb_handle(o);
+}
+
+
+/* remove a module from the chain. this isn't guaranteed to succeed,
+ * because removing the module might result in an invalid routing */
+void
+Chain::remove ( Module *m )
+{
+    int i = modules_pack->find( m );
+
+    int ins = 0;
+
+    if ( i != 0 )
+        ins = module( i - 1 )->noutputs();
+
+    if ( ! can_configure_outputs( m, ins ) )
+    {
+        fl_alert( "Can't remove module at this point because the resultant chain is invalid" );
+    }
+
+    modules_pack->remove( m );
+
+    configure_ports();
+}
+
+/* determine number of output ports, signal if changed.  */
+void
+Chain::configure_ports ( void )
+{
+    int old_outs = outs();
+    int nouts = 0;
+
+    engine->lock();
+
+    for ( int i = 0; i < modules(); ++i )
+    {
+        module( i )->configure_inputs( nouts );
+        nouts = module( i )->noutputs();
+    }
+
+    outs( nouts );
+
+    int req_buffers = required_buffers();
+
+    if ( outs() != old_outs )
+    {
+        if ( configure_outputs_callback() )
+            configure_outputs_callback()( this, _configure_outputs_userdata );
+    }
+
+    DMESSAGE( "required_buffers = %i", req_buffers );
+
+    if ( port.size() != req_buffers )
+    {
+        for ( unsigned int i = port.size(); i--; )
+            delete[] port[i].buffer();
+        port.clear();
+
+        for ( unsigned int i = 0; i < req_buffers; ++i )
+        {
+            Module::Port p( NULL, Module::Port::OUTPUT, Module::Port::AUDIO );
+            p.connect_to( new sample_t[engine->nframes()] );
+            port.push_back( p );
+        }
+    }
+
+    build_process_queue();
+
+    engine->unlock();
+
+    parent()->redraw();
+}
+
+/* calculate the minimum number of buffers required to satisfy this chain */
+int
+Chain::required_buffers ( void )
+{
+    int buffers = 0;
+    int outs = 0;
+
+    for ( int i = 0; i < modules(); ++i )
+    {
+        outs = module( i )->can_support_inputs( outs );
+
+        if ( outs > buffers )
+            buffers = outs;
+    }
+
+    return buffers;
+}
+
+/* called by a module when it wants to alter the number of its
+ * outputs. Also used to test for chain validity when inserting /
+ * removing modules */
+bool
+Chain::can_configure_outputs ( Module *m, int n ) const
+{
+    /* start at the requesting module */
+
+    int outs = n;
+
+    int i = modules_pack->find( m );
+
+    if ( modules() - 1 == i )
+        /* last module */
+        return true;
+
+    for ( i++ ; i < modules(); ++i )
+    {
+        outs = module( i )->can_support_inputs( outs );
+
+        if ( outs < 0 )
+            return false;
+    }
+
+    return true;
+}
+
+/* return true if this chain can be converted to support /n/ input channels  */
+bool
+Chain::can_support_input_channels ( int n )
+{
+    /* FIXME: implement */
+    return true;
+}
+
+/* rename chain... we have to let our modules know our name has
+ * changed so they can take the appropriate action (in particular the
+ * JACK module). */
+void
+Chain::name ( const char *name )
+{
+    _name = name;
+
+    for ( int i = 0; i < modules(); ++i )
+        module( i )->handle_chain_name_changed();
+}
+
+
+
+
+
+#include "FL/menu_popup.H"
+
+bool
+Chain::insert ( Module *m, Module *n )
+{
+
+    engine->lock();
+
+    if ( !m )
+    {
+        if ( modules() == 0 && n->can_support_inputs( 0 ) >= 0 )
+        {
+            n->configure_inputs( 0 );
+            modules_pack->add( n );
+            n->chain( this );
+        }
+        else if ( n->can_support_inputs( module( modules() - 1 )->noutputs() ) >= 0 )
+        {
+            n->configure_inputs( module( modules() - 1 )->noutputs() );
+            modules_pack->add( n );
+            n->chain( this );
+        }
+        else
+            goto err;
+    }
+    else
+    {
+        int i = modules_pack->find( m );
+
+        if ( 0 == i )
+        {
+            /* inserting to head of chain*/
+            if ( n->can_support_inputs( 0 ) >= 0 )
+                n->configure_inputs( 0 );
+            else
+                goto err;
+        }
+        else
+        {
+            if ( n->can_support_inputs(  module( i - 1 )->noutputs() ) >= 0 )
+            {
+                n->configure_inputs(  module( i - 1 )->noutputs() );
+
+                m->configure_inputs( n->noutputs() );
+
+                for ( int j = i + 1; j < modules(); ++j )
+                    module( j )->configure_inputs( module( j - 1 )->noutputs() );
+            }
+            else
+                goto err;
+        }
+
+        modules_pack->insert( *n, i );
+        n->chain( this );
+    }
+
+    DMESSAGE( "Module has %i:%i audio and %i:%i control ports",
+              n->ninputs(),
+              n->noutputs(),
+              n->ncontrol_inputs(),
+              n->ncontrol_outputs() );
+
+    configure_ports();
+
+    engine->unlock();
+
+    return true;
+
+err:
+
+    engine->unlock();
+
+    return false;
+}
+
+/* add a control to the control strip. Assumed to already be connected! */
+void
+Chain::add_control ( Module *m )
+{
+    controls_pack->add( m );
+}
+
+void
+Chain::draw_connections ( Module *m )
+{
+    int spacing;
+    int offset;
+
+    Fl_Color c =fl_color_average( FL_WHITE, FL_YELLOW, 0.50 );
+    fl_color( c );
+
+    if ( m->ninputs() )
+    {
+        spacing = w() / m->ninputs();
+        offset = spacing / 2;
+
+        for ( int i = m->ninputs(); i--; )
+            fl_rectf( m->x() + offset + ( spacing * i ), m->y() - 5, 2, 5 );
+    }
+
+    fl_color( fl_darker( c ) );
+
+    if ( m->noutputs() )
+    {
+        spacing = w() / m->noutputs();
+        offset = spacing / 2;
+        for ( int i = m->noutputs(); i--; )
+            fl_rectf( m->x() + offset + ( spacing * i ), m->y() + m->h(), 2, 5 );
+    }
+}
+
+void
+Chain::add_to_process_queue ( Module *m )
+{
+    for ( std::list<Module*>::const_iterator i = process_queue.begin(); i != process_queue.end(); ++i )
+        if ( m == *i )
+            return;
+
+    process_queue.push_back( m );
+}
+
+/* run any time the internal connection graph might have
+ * changed... Tells the process thread what order modules need to be
+ * run in. */
+void
+Chain::build_process_queue ( void )
+{
+    process_queue.clear();
+
+    for ( int i = 0; i < modules(); ++i )
+    {
+        Module *m = (Module*)module( i );
+
+        /* controllers */
+        for ( unsigned int j = 0; j < m->control_input.size(); ++j )
+        {
+            if ( m->control_input[j].connected() )
+            {
+                add_to_process_queue( m->control_input[j].connected_port()->module() );
+            }
+        }
+
+        /* audio modules */
+        add_to_process_queue( m );
+
+        /* indicators */
+        for ( unsigned int j = 0; j < m->control_output.size(); ++j )
+        {
+            if ( m->control_output[j].connected() )
+            {
+                add_to_process_queue( m->control_output[j].connected_port()->module() );
+            }
+        }
+    }
+
+    /* connect all the ports to the buffers */
+    for ( int i = 0; i < modules(); ++i )
+    {
+        Module *m = module( i );
+        for ( unsigned int j = 0; j < m->audio_input.size(); ++j )
+        {
+            m->audio_input[j].connect_to( &port[j] );
+        }
+        for ( unsigned int j = 0; j < m->audio_output.size(); ++j )
+        {
+            m->audio_output[j].connect_to( &port[j] );
+        }
+    }
+
+    DMESSAGE( "Process queue looks like:" );
+
+    for ( std::list<Module*>::const_iterator i = process_queue.begin(); i != process_queue.end(); ++i )
+    {
+        const Module* m = *i;
+
+        if ( m->audio_input.size() || m->audio_output.size() )
+            DMESSAGE( "\t%s", (*i)->name() );
+        else if ( m->control_output.size() )
+            DMESSAGE( "\t%s -->", (*i)->name() );
+        else if ( m->control_input.size() )
+            DMESSAGE( "\t%s <--", (*i)->name() );
+    }
+}
+
+void
+Chain::draw ( void )
+{
+    Fl_Group::draw();
+
+    if ( 0 == strcmp( "Chain", tabs->value()->label() ) )
+        for ( int i = 0; i < modules(); ++i )
+            draw_connections( module( i ) );
+}
+
+void
+Chain::resize ( int X, int Y, int W, int H )
+{
+    Fl_Group::resize( X, Y, W, H );
+
+/* this won't naturally resize because it's inside of an Fl_Scroll... */
+    controls_pack->size( W, controls_pack->h() );
+}
+
+#include "FL/test_press.H"
+
+int
+Chain::handle ( int m )
+{
+    switch ( m )
+    {
+        case FL_PUSH:
+        {
+            if ( Fl::belowmouse() != this )
+            {
+                Module *m = NULL;
+
+                for ( int i = 0; i < modules(); ++i )
+                    if ( Fl::event_inside( module( i ) ) )
+                    {
+                        m = module( i );
+                        break;
+                    }
+
+                if ( m )
+                {
+                    if ( test_press( FL_BUTTON3 | FL_CTRL ) )
+                    {
+                        if ( FL_BLACK == m->color() )
+                        {
+                            /* FIXME: hack */
+                            fl_alert( "Cannot delete this module." );
+                        }
+                        else
+                        {
+                            remove( m );
+                            delete m;
+                            redraw();
+                        }
+                        return 1;
+                    }
+                    else if ( test_press( FL_BUTTON1 | FL_SHIFT ) )
+                    {
+                        Module *mod = (Module*)Plugin_Module::pick_plugin();
+                        if ( mod )
+                        {
+                            if ( ! insert( m, mod ) )
+                                fl_alert( "Cannot insert this module at this point in the chain" );
+                            redraw();
+                        }
+                        return 1;
+                    }
+                    else if ( test_press( FL_BUTTON1 | FL_CTRL ) )
+                    {
+                        if ( m->active() )
+                            m->deactivate();
+                        else
+                            m->activate();
+                        return 1;
+                    }
+                }
+            }
+            break;
+        }
+    }
+
+    return Fl_Group::handle( m );
+}
+
+void
+Chain::process ( nframes_t nframes )
+{
+    for ( std::list<Module*>::const_iterator i = process_queue.begin(); i != process_queue.end(); ++i )
+    {
+        Module *m = *i;
+
+        m->nframes( nframes );
+        if ( m->active() )
+            m->process();
+    }
+}

Mixer/Chain.H

@@ -0,0 +1,104 @@
+
+/*******************************************************************************/
+/* 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 <FL/Fl.H>
+#include <FL/Fl_Pack.H>
+#include <FL/Fl_Button.H>
+
+#include "Module.H"
+#include "JACK/Port.H"
+#include <vector>
+#include <list>
+
+class Fl_Flowpack;
+class Fl_Tabs;
+
+class Chain : public Fl_Group {
+
+    Fl_Pack *modules_pack;
+    Fl_Flowpack *controls_pack;
+    Fl_Tabs *tabs;
+
+    void cb_handle(Fl_Widget*);
+    static void cb_handle(Fl_Widget*, void*);
+
+    int _ins;
+    int _outs;
+
+//    sample_t **_buffer;
+//    int _nbuffers;
+
+    Fl_Callback *_configure_outputs_callback;
+    void *_configure_outputs_userdata;
+
+    const char *_name;
+
+    void draw_connections ( Module *m );
+
+    std::list<Module*> process_queue;
+
+    void build_process_queue ( void );
+    void add_to_process_queue ( Module *m );
+
+public:
+
+    std::vector <Module::Port> port;
+
+    const char *name ( void ) const { return _name; }
+    void name ( const char *name );
+
+    void configure_ports ( void );
+    int required_buffers ( void );
+
+    Chain ( int X, int Y, int W, int H, const char *L = 0 );
+
+    bool can_support_input_channels ( int n );
+
+    void ins ( int i ) { _ins = i; }
+    void outs ( int i ) { _outs = i; }
+    int ins ( void ) const { return _ins; }
+    int outs ( void ) const { return _outs; }
+
+    int modules ( void ) const { return modules_pack->children(); }
+    Module *module ( int n ) const { return (Module*)modules_pack->child( n ); }
+    void remove ( Module *m );
+    bool insert ( Module *m, Module *n );
+    void add_control ( Module *m );
+
+    void initialize_with_default ( void );
+
+    bool can_configure_outputs ( Module *m, int n ) const;
+
+    void configure_outputs_callback ( Fl_Callback *cb, void *v )
+        {
+            _configure_outputs_callback = cb;
+            _configure_outputs_userdata = v;
+        }
+
+    Fl_Callback * configure_outputs_callback ( void ) const { return _configure_outputs_callback; }
+
+    void process ( nframes_t );
+
+protected:
+
+    int handle ( int m );
+    void draw ( void );
+    void resize ( int X, int Y, int W, int H );
+
+};

Mixer/Controller_Module.C

@@ -0,0 +1,259 @@
+
+/*******************************************************************************/
+/* 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 "Controller_Module.H"
+
+#include <FL/Fl.H>
+#include <FL/Fl_Value_Slider.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Counter.H>
+#include "FL/Fl_Arc_Dial.H"
+#include "FL/Fl_Light_Button.H"
+#include "FL/Boxtypes.H"
+#include <FL/fl_draw.H>
+#include "FL/Fl_Labelpad_Group.H"
+#include <stdio.h>
+#include "Engine/Engine.H"
+#include "Chain.H"
+
+
+
+const float CONTROL_UPDATE_FREQ = 0.1f;
+
+
+
+Controller_Module::Controller_Module ( int W, int H, const char *L )
+    : Module ( W, 100, L )
+{
+//    label( "" );
+    box( FL_NO_BOX );
+
+    _pad = true;
+    control = 0;
+    control_value =0.0f;
+    add_port( Port( this, Port::OUTPUT, Port::CONTROL ) );
+
+    mode( GUI );
+//    mode( CV );
+//    configure_inputs( 1 );
+
+    end();
+
+    Fl::add_timeout( CONTROL_UPDATE_FREQ, update_cb, this );
+}
+
+Controller_Module::~Controller_Module ( )
+{
+
+}
+
+
+
+void
+Controller_Module::update_cb ( void *v )
+{
+    ((Controller_Module*)v)->update_cb();
+}
+
+void
+Controller_Module::update_cb ( void )
+{
+    Fl::repeat_timeout( CONTROL_UPDATE_FREQ, update_cb, this );
+
+    if ( control && control_output[0].connected() )
+        control->value(control_value);
+}
+
+void
+Controller_Module::cb_handle ( Fl_Widget *w, void *v )
+{
+    ((Controller_Module*)v)->cb_handle( w );
+}
+
+void
+Controller_Module::cb_handle ( Fl_Widget *w )
+{
+    control_value = ((Fl_Valuator*)w)->value();
+    if ( control_output[0].connected() )
+    {
+        control_output[0].control_value( control_value );
+        Port *p = control_output[0].connected_port();
+        Module *m = p->module();
+
+        m->handle_control_changed( p );
+    }
+}
+
+void
+Controller_Module::connect_to ( Port *p )
+{
+    control_output[0].connect_to( p );
+
+    if( mode() == CV )
+    {
+        engine->lock();
+        {
+            char name[256];
+            snprintf( name, sizeof( name ), "%s-CV", p->name() );
+
+            JACK::Port po( engine->client(), JACK::Port::Input, chain()->name(), 0, name );
+
+            if ( po.valid() )
+            {
+                jack_input.push_back( po );
+            }
+        }
+        engine->unlock();
+    }
+
+    Fl_Widget *w;
+
+    if ( p->hints.type == Module::Port::Hints::BOOLEAN )
+    {
+        Fl_Light_Button *o = new Fl_Light_Button( 0, 0, 40, 40, p->name() );
+        w = o;
+        o->value( p->control_value() );
+
+    }
+    else if ( p->hints.type == Module::Port::Hints::INTEGER )
+    {
+
+        Fl_Counter *o = new Fl_Counter(0, 0, 58, 24, p->name() );
+        control = o;
+        w = o;
+
+        o->type(1);
+        o->step(1);
+
+        if ( p->hints.ranged )
+        {
+            o->minimum( p->hints.minimum );
+            o->maximum( p->hints.maximum );
+        }
+
+        o->value( p->control_value() );
+    }
+    else if ( p->hints.type == Module::Port::Hints::LOGARITHMIC )
+    {
+        Fl_Value_Slider *o = new Fl_Value_Slider(0, 0, 30, 250, p->name() );
+        control = o;
+        w = o;
+
+        o->type(4);
+        o->color(FL_GRAY0);
+        o->selection_color((Fl_Color)1);
+        o->minimum(1.5);
+        o->maximum(0);
+        o->step(0.01);
+        o->value(1);
+        o->textsize(14);
+
+//        o->type( FL_VERTICAL );
+//        o->type(1);
+
+        if ( p->hints.ranged )
+        {
+            o->minimum( p->hints.maximum );
+            o->maximum( p->hints.minimum );
+        }
+
+        o->value( p->control_value() );
+    }
+    else
+    {
+        { Fl_Arc_Dial *o = new Fl_Arc_Dial( 0, 0, 40, 40, p->name() );
+            w = o;
+            control = o;
+            if ( p->hints.ranged )
+            {
+                o->minimum( p->hints.minimum );
+                o->maximum( p->hints.maximum );
+            }
+
+            o->box( FL_BURNISHED_OVAL_BOX );
+//            o->box( FL_OVAL_BOX );
+//            o->type( FL_FILL_DIAL );
+            o->color( fl_darker( fl_darker( FL_GRAY ) ) );
+            o->selection_color( FL_WHITE );
+            o->value( p->control_value() );
+
+        }
+
+    }
+
+    control_value = p->control_value();
+
+    w->align(FL_ALIGN_TOP);
+    w->labelsize( 10 );
+    w->callback( cb_handle, this );
+
+    if ( _pad )
+    {
+        Fl_Labelpad_Group *flg = new Fl_Labelpad_Group( w );
+        size( flg->w(), flg->h() );
+        add( flg );
+    }
+    else
+    {
+        w->resize( x(), y(), this->w(), h() );
+        add( w );
+        resizable( w );
+    }
+}
+
+int
+Controller_Module::handle ( int m )
+{
+    return Fl_Group::handle( m );
+}
+
+
+
+void
+Controller_Module::process ( void )
+{
+    if ( control_output[0].connected() )
+    {
+        float f = control_value;
+
+        if ( mode() == CV )
+        {
+            f = *((float*)jack_input[0].buffer( engine->nframes() ));
+
+            const Port *p = control_output[0].connected_port();
+
+            if (p->hints.ranged )
+            {
+                // scale value to range.
+                // we assume that CV values are between 0 and 1
+
+                float scale = p->hints.maximum - p->hints.minimum;
+                float offset = p->hints.minimum;
+
+                f = ( f * scale ) + offset;
+            }
+        }
+//        else
+//            f =  *((float*)control_output[0].buffer());
+
+        *((float*)control_output[0].buffer()) = f;
+
+       control_value = f;
+    }
+}

Mixer/Controller_Module.H

@@ -0,0 +1,81 @@
+
+/*******************************************************************************/
+/* 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"
+#include <vector>
+#include "JACK/Port.H"
+
+class Fl_Valuator;
+
+class Controller_Module : public Module
+{
+
+    static void update_cb ( void *v );
+    void update_cb ( void );
+
+    bool _pad;
+
+    volatile float control_value;
+
+public:
+
+    enum Mode { GUI, CV, OSC, MIDI };
+
+    Mode mode ( void ) const { return _mode; }
+    void mode ( Mode v ) { _mode = v; }
+
+    Controller_Module ( int W, int H, const char *L=0 );
+    virtual ~Controller_Module ( );
+
+    const char *name ( void ) const { return "Controller"; }
+
+    int can_support_inputs ( int n ) { return 0; }
+    bool configure_inputs ( int n ) { return false; }
+
+    void pad ( bool v ) { _pad = v; }
+
+    static void cb_handle ( Fl_Widget *w, void *v );
+    void cb_handle ( Fl_Widget *w );
+
+    void connect_to ( Port *p );
+
+protected:
+
+
+    //   virtual void draw ( void );
+    virtual void process ( void );
+
+    virtual void draw ( void )
+        {
+            draw_box();
+            Fl_Group::draw();
+        }
+
+    virtual int handle ( int m );
+
+private:
+
+    std::vector<JACK::Port> jack_input;
+    Mode _mode;
+
+    Fl_Valuator *control;
+
+};

Mixer/DPM.C

@@ -0,0 +1,179 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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.  */
+/*******************************************************************************/
+
+/* a Digital Peak Meter, either horizontal or vertical.  Color is a
+   gradient from min_color() to max_color(). box() is used to draw the
+   individual 'lights'. division() controls how many 'lights' there
+   are. value() is volume in dBFS */
+
+#include "DPM.H"
+
+/* we cache the gradient for (probably excessive) speed */
+float DPM::_dim;
+Fl_Color DPM::_gradient[128] = { (Fl_Color)-1 };
+Fl_Color DPM::_dim_gradient[128];
+
+#include <FL/Fl.H>
+#include <FL/fl_draw.H>
+#include <FL/Fl_Group.H>
+
+#include <math.h>
+#include <stdio.h>
+
+DPM::DPM ( int X, int Y, int W, int H, const char *L ) :
+    Meter( X, Y, W, H, L )
+{
+    _last_drawn_hi_segment = 0;
+
+    pixels_per_segment( 4 );
+
+    type( FL_VERTICAL );
+
+    resize( X, Y, W, H );
+
+    dim( 0.70f );
+
+    /* initialize gradients */
+    if ( DPM::_gradient[ 0 ] == -1 )
+        DPM::blend( FL_GREEN, FL_RED );
+
+    box( FL_ROUNDED_BOX );
+}
+
+/* which marks to draw beside meter */
+const int marks [] = { -70, -50, -40, -30, -20, -10, -3, 0, 4 };
+
+void
+DPM::draw_label ( void )
+{
+    /* dirty hack */
+    if ( parent()->child( 0 ) == this )
+    {
+        fl_font( FL_TIMES, 8 );
+        fl_color( FL_WHITE );
+        /* draw marks */
+        char pat[5];
+        if ( type() == FL_HORIZONTAL )
+        {
+            for ( int i = sizeof( marks ) / sizeof( marks[0] ); i-- ; )
+            {
+                sprintf( pat, "%d", marks[ i ] );
+
+                int v = w() *  deflection( (float)marks[ i ] );
+
+                fl_draw( pat, x() + v, (y() + h() + 8), 19, 8, (Fl_Align) (FL_ALIGN_RIGHT | FL_ALIGN_TOP) );
+            }
+
+        }
+        else
+        {
+            for ( int i = sizeof( marks ) / sizeof( marks[0] ); i-- ; )
+            {
+                sprintf( pat, "%d", marks[ i ] );
+
+                int v = h() *  deflection( (float)marks[ i ] );
+
+                fl_draw( pat, x() - 20, (y() + h() - 8) - v, 19, 8, (Fl_Align) (FL_ALIGN_RIGHT | FL_ALIGN_TOP) );
+            }
+        }
+    }
+}
+
+void
+DPM::resize ( int X, int Y, int W, int H )
+{
+    if ( type() == FL_HORIZONTAL )
+        _segments = W / _pixels_per_segment;
+    else
+        _segments = H / _pixels_per_segment;
+
+    Fl_Widget::resize( X, Y, W, H );
+}
+
+void
+DPM::draw ( void )
+{
+    int v = pos( value() );
+    int pv = pos( peak() );
+
+    int bh = h() / _segments;
+    int bw = w() / _segments;
+
+    if ( damage() == FL_DAMAGE_ALL )
+        draw_label();
+
+    const int active = active_r();
+
+    int hi, lo;
+
+    /* only draw as many segments as necessary */
+    if ( damage() == FL_DAMAGE_USER1 )
+    {
+        if ( _last_drawn_hi_segment > pos( value() ) )
+        {
+            hi = _last_drawn_hi_segment;
+            lo = v;
+        }
+        else
+        {
+            hi = v;
+            lo = _last_drawn_hi_segment;
+        }
+    }
+    else
+    {
+        lo = 0;
+        hi = _segments;
+    }
+
+    _last_drawn_hi_segment = hi;
+
+    for ( int p = hi; p > lo; p-- )
+    {
+        Fl_Color c = DPM::div_color( p );
+
+        if ( p > v && p != pv )
+            c = dim_div_color( p );
+
+        if ( ! active )
+            c = fl_inactive( c );
+
+        if ( _pixels_per_segment < 4 )
+        {
+            if ( type() == FL_HORIZONTAL )
+                fl_rectf( x() + (p * bw), y(), bw, h(), c );
+            else
+                fl_rectf( x(), y() + h() - (p * bh), w(), bh, c );
+        }
+        else
+        {
+            if ( type() == FL_HORIZONTAL )
+                fl_draw_box( box(), x() + (p * bw), y(), bw, h(), c );
+            else
+                fl_draw_box( box(), x(), y() + h() - (p * bh), w(), bh, c );
+        }
+
+/*         fl_color( c ); */
+/*         fl_rectf( x(), y() + h() - (p * bh), w(), bh ); */
+/*         fl_color( FL_BLACK ); */
+/*         fl_rect( x(), y() + h() - (p * bh), w(), bh ); */
+
+   }
+
+}

Mixer/DPM.H

@@ -0,0 +1,81 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 <FL/Fl_Valuator.H> // for FL_HORIZONTAL and FL_VERTICAL
+
+#include "Meter.H"
+
+class DPM : public Meter
+{
+    int _segments;
+    int _pixels_per_segment;
+    int _last_drawn_hi_segment;
+
+    int pos ( float v )
+        {
+            return deflection( v ) * _segments;
+        }
+
+    static float _dim;
+    static Fl_Color _gradient[];
+    static Fl_Color _dim_gradient[];
+
+    Fl_Color
+    div_color ( int i )
+        {
+            return _gradient[ i * 127 / _segments ];
+        }
+
+    Fl_Color
+    dim_div_color ( int i )
+        {
+            return _dim_gradient[ i * 127 / _segments ];
+        }
+
+
+protected:
+
+    virtual void draw_label ( void );
+    virtual void draw ( void );
+    virtual void resize ( int, int, int, int );
+
+public:
+
+    DPM ( int X, int Y, int W, int H,  const char *L = 0 );
+
+//    void value ( float v ) { if ( pos( v ) != pos( value() ) )  redraw(); Meter::value( v ) }
+
+    void pixels_per_segment ( int v ) { _pixels_per_segment = v; }
+
+    float dim ( void ) const { return _dim; }
+    void dim ( float v ) { _dim = v; redraw(); }
+
+    static
+    void
+    blend ( Fl_Color min, Fl_Color max )
+        {
+            for ( int i = 128; i-- ; )
+                _gradient[ i ] = fl_color_average( max, min, i / (float)128 );
+
+            for ( int i = 128; i-- ; )
+                _dim_gradient[ i ] = fl_color_average( FL_BLACK, _gradient[ i ], _dim );
+        }
+};

Mixer/Engine/Engine.C

@@ -0,0 +1,147 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 "Engine.H"
+
+#include "../Mixer.H" // for process()
+
+/* This is the home of the JACK process callback */
+
+// #include "const.h"
+#include "util/debug.h"
+#include "util/Thread.H"
+
+
+
+Engine::Engine ( ) : _thread( "RT" )
+{
+    _buffers_dropped = 0;
+}
+
+Engine::~Engine ( )
+{
+}
+
+
+
+/*************/
+/* Callbacks */
+/*************/
+
+/* THREAD: RT */
+/** This is the jack xrun callback */
+int
+Engine::xrun ( void )
+{
+    return 0;
+}
+
+/* THREAD: RT */
+void
+Engine::freewheel ( bool starting )
+{
+    if ( starting )
+        DMESSAGE( "entering freewheeling mode" );
+    else
+        DMESSAGE( "leaving freewheeling mode" );
+}
+
+/* THREAD: RT (non-RT) */
+int
+Engine::buffer_size ( nframes_t nframes )
+{
+    // timeline->resize_buffers( nframes );
+
+    return 0;
+}
+
+int Engine::sync ( jack_transport_state_t state, jack_position_t *pos )
+{
+}
+
+void
+Engine::timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos, int new_pos )
+{
+
+
+}
+
+void
+Engine::timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos )
+{
+
+}
+
+/* THREAD: RT */
+int
+Engine::process ( nframes_t nframes )
+{
+    /* FIXME: wrong place for this */
+    _thread.set( "RT" );
+
+    if ( freewheeling() )
+    {
+/*         /\* freewheeling mode/export. We're actually running */
+/*            non-RT. Assume that everything is quiescent, locking is */
+/*            unecessary and do I/O synchronously *\/ */
+/*         if ( timeline ) */
+/*             timeline->process( nframes ); */
+
+/*         /\* because we're going faster than realtime. *\/ */
+/*         timeline->wait_for_buffers(); */
+    }
+    else
+    {
+        if ( ! trylock() )
+        {
+            /* the data structures we need to access here (tracks and
+             * their ports, but not track contents) may be in an
+             * inconsistent state at the moment. Just punt and drop this
+             * buffer. */
+            ++_buffers_dropped;
+            return 0;
+        }
+
+        /* handle chicken/egg problem */
+        if ( mixer )
+            /* this will initiate the process() call graph for the various
+             * number and types of tracks, which will in turn send data out
+             * the appropriate ports.  */
+            mixer->process( nframes );
+
+        unlock();
+    }
+
+    return 0;
+}
+
+
+/* TRHEAD: RT */
+void
+Engine::thread_init ( void )
+{
+    _thread.set( "RT" );
+}
+
+/* THREAD: RT */
+void
+Engine::shutdown ( void )
+{
+}

Mixer/Engine/Engine.H

@@ -0,0 +1,66 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 "util/Mutex.H"
+
+class Port;
+
+#include "JACK/Client.H"
+
+#include "Thread.H"
+
+class Engine : public JACK::Client, public Mutex
+{
+    Thread _thread;                                            /* only used for thread checking */
+
+    int _buffers_dropped;                                       /* buffers dropped because of locking */
+/*     int _buffers_dropped;                                       /\* buffers dropped because of locking *\/ */
+
+    void shutdown ( void );
+    int process ( nframes_t nframes );
+    int sync ( jack_transport_state_t state, jack_position_t *pos );
+    int xrun ( void );
+    void timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos );
+    void timebase ( jack_transport_state_t state, jack_nframes_t nframes, jack_position_t *pos, int new_pos );
+    void freewheel ( bool yes );
+    int buffer_size ( nframes_t nframes );
+    void thread_init ( void );
+
+    Engine ( const Engine &rhs );
+    Engine & operator = ( const Engine &rhs );
+
+    void request_locate ( nframes_t frame );
+
+private:
+
+    friend class Port;
+    friend class Transport;
+
+public:
+
+    Engine ( );
+    ~Engine ( );
+
+    int dropped ( void ) const { return _buffers_dropped; }
+
+};
+
+extern Engine * engine;

Mixer/Gain_Module.C

@@ -0,0 +1,98 @@
+
+/*******************************************************************************/
+/* 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 "Gain_Module.H"
+#include <FL/Fl_Single_Window.H>
+#include <math.h>
+#include <dsp.h>
+
+Gain_Module::Gain_Module ( int W, int H, const char *L )
+    : Module ( W, 24, L )
+{
+    add_port( Port( this, Port::INPUT, Port::AUDIO ) );
+    add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
+
+    Port p( this, Port::INPUT, Port::CONTROL, "gain" );
+    p.hints.type = Port::Hints::LOGARITHMIC;
+    p.hints.ranged = true;
+    p.hints.minimum = 0.0f;
+//    p.hints.maximum = HUGE;
+    p.hints.maximum = 10.0f;
+    p.hints.default_value = 1.0f;
+
+    p.connect_to( new float );
+    p.control_value( 1.0f );
+
+    add_port( p );
+
+    color( FL_BLACK );
+
+    end();
+}
+
+Gain_Module::~Gain_Module ( )
+{
+}
+
+
+
+bool
+Gain_Module::configure_inputs ( int n )
+{
+    audio_input.clear();
+    audio_output.clear();
+//    control_input.clear();
+
+    for ( int i = 0; i < n; ++i )
+    {
+        add_port( Port( this, Port::INPUT, Port::AUDIO ) );
+        add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
+//        add_port( Port( this, Port::INPUT, Port::CONTROL ) );
+
+/*         Port p( Port::OUTPUT, Port::CONTROL, "dB level" ); */
+/*         p.hints.type = Port::Hints::LOGARITHMIC; */
+/*         add_port( p ); */
+    }
+
+    return true;
+}
+
+
+
+void
+Gain_Module::process ( void )
+{
+    if ( control_input[0].connected() )
+    {
+        float g = control_input[0].control_value();
+
+        for ( int i = audio_input.size(); i--; )
+        {
+            if ( audio_input[i].connected() && audio_output[i].connected() )
+            {
+                buffer_apply_gain( (sample_t*)audio_input[i].buffer(), nframes(), g );
+
+/*             buffer_copy_and_apply_gain( (sample_t*)audio_output[0].buffer(), */
+/*                                         (sample_t*)audio_input[0].buffer(), */
+/*                                         nframes(), */
+/*                                         g ); */
+            }
+        }
+    }
+}

Mixer/Gain_Module.H

@@ -0,0 +1,40 @@
+
+/*******************************************************************************/
+/* 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 Gain_Module : public Module
+{
+public:
+
+    Gain_Module ( int W, int H, const char *L=0 );
+    virtual ~Gain_Module ( );
+
+    const char *name ( void ) const { return "Gain"; }
+
+    int can_support_inputs ( int n ) { return n; }
+    bool configure_inputs ( int n );
+
+protected:
+
+    virtual void process ( void );
+
+};

Mixer/JACK_Module.C

@@ -0,0 +1,187 @@
+
+/*******************************************************************************/
+/* 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 "JACK_Module.H"
+#include <FL/Fl_Single_Window.H>
+
+#include "Engine/Engine.H"
+#include "dsp.h"
+#include <string.h>
+#include "Chain.H"
+
+JACK_Module::JACK_Module ( int W, int H, const char *L )
+    : Module ( W, 24, L )
+{
+    /* FIXME: how do Controls find out that a connected value has changed? How does this work in ladspa? */
+    {
+        Port p( this, Port::INPUT, Port::CONTROL, "Inputs" );
+        p.hints.type = Port::Hints::INTEGER;
+        p.hints.minimum = 0;
+        p.hints.maximum = 6;
+
+        p.connect_to( new float );
+        p.control_value_no_callback( 0 );
+
+        add_port( p );
+    }
+
+    {
+        Port p( this, Port::INPUT, Port::CONTROL, "Outputs" );
+        p.hints.type = Port::Hints::INTEGER;
+        p.hints.minimum = 0;
+        p.hints.maximum = 6;
+
+        p.connect_to( new float );
+        p.control_value_no_callback( 0 );
+
+        add_port( p );
+    }
+
+    end();
+}
+
+int
+JACK_Module::can_support_inputs ( int n )
+{
+    return audio_output.size();
+}
+
+bool
+JACK_Module::configure_inputs ( int n )
+{
+    int on = audio_input.size();
+
+    if ( n > on )
+    {
+        for ( int i = on; i < n; ++i )
+        {
+            JACK::Port po( engine->client(), JACK::Port::Output, chain()->name(), i );
+
+            if ( po.valid() )
+            {
+                add_port( Port( this, Port::INPUT, Port::AUDIO ) );
+                jack_output.push_back( po );
+            }
+        }
+    }
+    else
+    {
+        for ( int i = on; i > n; --i )
+        {
+            audio_input.back().disconnect();
+            audio_input.pop_back();
+            jack_output.back().shutdown();
+            jack_output.pop_back();
+        }
+    }
+
+    control_input[0].control_value_no_callback( n );
+
+    return true;
+}
+
+bool
+JACK_Module::configure_outputs ( int n )
+{
+   int on = audio_output.size();
+
+    if ( n > on )
+    {
+        for ( int i = on; i < n; ++i )
+        {
+            JACK::Port po( engine->client(), JACK::Port::Input, chain()->name(), i );
+
+            if ( po.valid() )
+            {
+                add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
+                jack_input.push_back( po );
+            }
+        }
+    }
+    else
+    {
+        for ( int i = on; i > n; --i )
+        {
+            audio_output.back().disconnect();
+            audio_output.pop_back();
+            jack_input.back().shutdown();
+            jack_input.pop_back();
+        }
+    }
+
+    control_input[1].control_value_no_callback( n );
+
+    return true;
+}
+
+bool
+JACK_Module::initialize ( void )
+{
+//    configure_inputs( 1 );
+    return true;
+}
+
+JACK_Module::~JACK_Module ( )
+{
+    configure_inputs( 0 );
+}
+
+void
+JACK_Module::handle_control_changed ( Port *p )
+{
+    if ( 0 == strcmp( p->name(), "Inputs" ) )
+    {
+        DMESSAGE( "Adjusting number of inputs (JACK outputs)" );
+        configure_inputs( p->control_value() );
+        chain()->configure_ports();
+    }
+    else if ( 0 == strcmp( p->name(), "Outputs" ) )
+    {
+        DMESSAGE( "Adjusting number of outputs (JACK inputs)" );
+        if ( chain()->can_configure_outputs( this, p->control_value() ) )
+        {
+            configure_outputs( p->control_value() );
+            chain()->configure_ports();
+        }
+    }
+}
+
+void
+JACK_Module::handle_chain_name_changed ( void )
+{
+    for ( unsigned int i = 0; i < jack_output.size(); ++i )
+        jack_output[ i ].name( chain()->name(), i  );
+
+    for ( unsigned int i = 0; i < jack_input.size(); ++i )
+        jack_input[ i ].name( chain()->name(), i );
+}
+
+
+
+void
+JACK_Module::process ( void )
+{
+    for ( int i = 0; i < audio_input.size(); ++i )
+        if ( audio_input[i].connected() )
+            buffer_copy( (sample_t*)jack_output[i].buffer( nframes() ), (sample_t*)audio_input[i].buffer(), nframes() );
+
+    for ( int i = 0; i < audio_output.size(); ++i )
+        if ( audio_output[i].connected() )
+            buffer_copy( (sample_t*)audio_output[i].buffer(), (sample_t*)jack_input[i].buffer( nframes() ), nframes() );
+}

Mixer/JACK_Module.H

@@ -0,0 +1,58 @@
+
+/*******************************************************************************/
+/* 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"
+#include "JACK/Port.H"
+#include <vector>
+
+class JACK_Module : public Module
+{
+    const char *_strip_name;
+
+    std::vector<JACK::Port> jack_input;
+    std::vector<JACK::Port> jack_output;
+
+public:
+
+    JACK_Module ( int W, int H, const char *L=0 );
+    virtual ~JACK_Module ( );
+
+    const char *name ( void ) const { return "JACK"; }
+
+    void strip_name ( const char *name ) { _strip_name = name; }
+
+    bool initialize ( void );
+
+    int can_support_inputs ( int );
+    bool configure_inputs ( int n );
+    bool configure_outputs ( int n );
+
+    void add_output ( void );
+
+    void handle_control_changed ( Port *p );
+    void handle_chain_name_changed ();
+
+protected:
+
+    virtual void process ( void );
+
+};

Mixer/LADSPAInfo.C

@@ -0,0 +1,791 @@
+//
+//  LADSPAInfo.C - Class for indexing information on LADSPA Plugins
+//
+//  Copyleft (C) 2002  Mike Rawes <myk@waxfrenzy.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 <config.h>
+
+#include <vector>
+#include <string>
+#include <list>
+#include <map>
+#include <iostream>
+#include <sstream>
+#include <algorithm>
+#include <stdio.h>
+#include <cstring>
+#include <cstdlib>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <dlfcn.h>
+
+#include <ladspa.h>
+
+#define HAVE_LIBLRDF 1
+#ifdef HAVE_LIBLRDF
+#include <lrdf.h>
+#endif
+
+#include "LADSPAInfo.h"
+
+using namespace std;
+
+LADSPAInfo::LADSPAInfo(bool override,
+                       const char *path_list)
+{
+	if (strlen(path_list) > 0) {
+		m_ExtraPaths = strdup(path_list);
+	} else {
+		m_ExtraPaths = NULL;
+	}
+	m_LADSPAPathOverride = override;
+
+	RescanPlugins();
+}
+
+LADSPAInfo::~LADSPAInfo()
+{
+	CleanUp();
+}
+
+void
+LADSPAInfo::RescanPlugins(void)
+{
+// Clear out what we've got
+	CleanUp();
+
+	if (!m_LADSPAPathOverride) {
+	// Get $LADPSA_PATH, if available
+		char *ladspa_path = getenv("LADSPA_PATH");
+		if (ladspa_path) {
+			ScanPathList(ladspa_path, &LADSPAInfo::ExaminePluginLibrary);
+
+		} else {
+
+			cerr << "WARNING: LADSPA_PATH environment variable not set" << endl;
+			cerr << "         Assuming /usr/lib/ladspa:/usr/local/lib/ladspa" << endl;
+
+			ScanPathList("/usr/lib/ladspa:/usr/local/lib/ladspa", &LADSPAInfo::ExaminePluginLibrary);
+		}
+	}
+
+// Check any supplied extra paths
+	if (m_ExtraPaths) {
+		ScanPathList(m_ExtraPaths, &LADSPAInfo::ExaminePluginLibrary);
+	}
+
+// Do we have any plugins now?
+	if (m_Plugins.size() == 0) {
+		cerr << "WARNING: No plugins found" << endl;
+	} else {
+		cerr << m_Plugins.size() << " plugins found in " << m_Libraries.size() << " libraries" << endl;
+
+#ifdef HAVE_LIBLRDF
+	// Got some plugins. Now search for RDF data
+		lrdf_init();
+
+		char *rdf_path = getenv("LADSPA_RDF_PATH");
+
+		if (rdf_path) {
+		// Examine rdf info
+			ScanPathList(rdf_path, &LADSPAInfo::ExamineRDFFile);
+
+		} else {
+			cerr << "WARNING: LADSPA_RDF_PATH environment variable not set" << endl;
+			cerr << "         Assuming /usr/share/ladspa/rdf:/usr/local/share/ladspa/rdf" << endl;
+
+		// Examine rdf info
+			ScanPathList("/usr/share/ladspa/rdf:/usr/local/share/ladspa/rdf", &LADSPAInfo::ExamineRDFFile);
+		}
+		MetadataRDFDescend(LADSPA_BASE "Plugin", 0);
+
+	// See which plugins were not added to an rdf group, and add them
+	// all into the top level 'LADSPA' one
+		list<unsigned long> rdf_p;
+
+	// Get indices of plugins added to groups
+		for (vector<RDFURIInfo>::iterator ri = m_RDFURIs.begin(); ri != m_RDFURIs.end(); ri++) {
+			rdf_p.insert(rdf_p.begin(), ri->Plugins.begin(), ri->Plugins.end());
+		}
+
+	// Add all uncategorized plugins to top level group, subclassed by their
+	// library's basename.
+		rdf_p.unique();
+		rdf_p.sort();
+		unsigned long last_p = 0;
+		for (list<unsigned long>::iterator p = rdf_p.begin(); p != rdf_p.end(); p++) {
+			if ((*p - last_p) > 1) {
+				for (unsigned long i = last_p + 1; i < *p; i++) {
+				// URI 0 is top-level "LADSPA" group
+					m_RDFURIs[0].Plugins.push_back(i);
+				}
+			}
+			last_p = *p;
+		}
+		while (++last_p < m_Plugins.size()) {
+		// URI 0 is top-level "LADSPA" group
+			m_RDFURIs[0].Plugins.push_back(last_p);
+		}
+
+		lrdf_cleanup();
+#else
+	// No RDF. Add all plugins to top-level group
+		RDFURIInfo ri;
+
+		ri.URI = "";
+		ri.Label = "LADSPA";
+
+		m_RDFURIs.push_back(ri);
+		m_RDFLabelLookup["LADSPA"] = 0;
+
+		for (unsigned long i = 0; i < m_Plugins.size(); i++) {
+		// Add plugin index
+			m_RDFURIs[0].Plugins.push_back(i);
+		}
+#endif
+	}
+}
+
+void
+LADSPAInfo::UnloadAllLibraries(void)
+{
+// Blank descriptors
+	for (vector<PluginInfo>::iterator i = m_Plugins.begin();
+		i != m_Plugins.end(); i++) {
+		if (i->Descriptor) i->Descriptor = NULL;
+	}
+// Unload DLLs,
+	for (vector<LibraryInfo>::iterator i = m_Libraries.begin();
+		i != m_Libraries.end(); i++) {
+		if (i->Handle) {
+			dlclose(i->Handle);
+			i->Handle = NULL;
+		}
+		i->RefCount = 0;
+	}
+}
+
+const LADSPA_Descriptor *
+LADSPAInfo::GetDescriptorByID(unsigned long unique_id)
+{
+	if (m_IDLookup.find(unique_id) == m_IDLookup.end()) {
+		cerr << "LADSPA Plugin ID " << unique_id << " not found!" << endl;
+		return NULL;
+	}
+
+// Got plugin index
+	unsigned long plugin_index = m_IDLookup[unique_id];
+
+	PluginInfo *pi = &(m_Plugins[plugin_index]);
+	LibraryInfo *li = &(m_Libraries[pi->LibraryIndex]);
+
+	if (!(pi->Descriptor)) {
+		LADSPA_Descriptor_Function desc_func = GetDescriptorFunctionForLibrary(pi->LibraryIndex);
+		if (desc_func) pi->Descriptor = desc_func(pi->Index);
+	}
+
+	if (pi->Descriptor) {
+
+	// Success, so increment ref counter for library
+		li->RefCount++;
+	}
+
+	return pi->Descriptor;
+}
+
+void
+LADSPAInfo::DiscardDescriptorByID(unsigned long unique_id)
+{
+	if (m_IDLookup.find(unique_id) == m_IDLookup.end()) {
+		cerr << "LADSPA Plugin ID " << unique_id << " not found!" << endl;
+	} else {
+
+	// Get plugin index
+		unsigned long plugin_index = m_IDLookup[unique_id];
+
+		PluginInfo *pi = &(m_Plugins[plugin_index]);
+		LibraryInfo *li = &(m_Libraries[pi->LibraryIndex]);
+
+		pi->Descriptor = NULL;
+
+	// Decrement reference counter for library, and unload if last
+		if (li->RefCount > 0) {
+			li->RefCount--;
+			if (li->RefCount == 0) {
+
+			// Unload library
+				dlclose(li->Handle);
+				li->Handle = NULL;
+			}
+		}
+	}
+}
+
+// ****************************************************************************
+// **                      SSM Specific Functions                            **
+// ****************************************************************************
+
+unsigned long
+LADSPAInfo::GetIDFromFilenameAndLabel(std::string filename,
+                                      std::string label)
+{
+	bool library_loaded = false;
+
+	if (m_FilenameLookup.find(filename) == m_FilenameLookup.end()) {
+		cerr << "LADSPA Library " << filename << " not found!" << endl;
+		return 0;
+	}
+
+	unsigned long library_index = m_FilenameLookup[filename];
+
+	if (!(m_Libraries[library_index].Handle)) library_loaded = true;
+
+	LADSPA_Descriptor_Function desc_func = GetDescriptorFunctionForLibrary(library_index);
+
+	if (!desc_func) {
+		return 0;
+	}
+
+// Search for label in library
+	const LADSPA_Descriptor *desc;
+	for (unsigned long i = 0; (desc = desc_func(i)) != NULL; i++) {
+		string l = desc->Label;
+		if (l == label) {
+
+		// If we had to load the library, unload it
+			unsigned long id = desc->UniqueID;
+			if (library_loaded) {
+				dlclose(m_Libraries[library_index].Handle);
+				m_Libraries[library_index].Handle = NULL;
+			}
+			return id;
+		}
+	}
+
+	cerr << "Plugin " << label << " not found in library " << filename << endl;
+	return 0;
+}
+
+const vector<LADSPAInfo::PluginEntry>
+LADSPAInfo::GetMenuList(void)
+{
+	m_SSMMenuList.clear();
+
+	DescendGroup("", "LADSPA", 1);
+
+	return m_SSMMenuList;
+}
+
+unsigned long
+LADSPAInfo::GetPluginListEntryByID(unsigned long unique_id)
+{
+	unsigned long j = 0;
+	for (vector<PluginEntry>::iterator i = m_SSMMenuList.begin();
+		i != m_SSMMenuList.end(); i++, j++) {
+		if (i->UniqueID == unique_id) return j;
+	}
+	return m_SSMMenuList.size();
+}
+
+// ****************************************************************************
+// **                     Private Member Functions                           **
+// ****************************************************************************
+
+// Build a list of plugins by group, suitable for SSM LADSPA Plugin drop-down
+// The top-level "LADSPA" group is not included
+
+void
+LADSPAInfo::DescendGroup(string prefix,
+                         const string group,
+                         unsigned int depth)
+{
+	list<string> groups = GetSubGroups(group);
+
+	if (prefix.length() > 0) {
+	// Add an explicit '/' as we're creating sub-menus from groups
+		prefix += "/";
+	}
+
+	for (list<string>::iterator g = groups.begin(); g != groups.end(); g++) {
+		string name;
+
+		// Escape '/' and '|' characters
+		unsigned int x = g->find_first_of("/|");
+		if (x == string::npos) {
+			name = *g;
+		} else {
+			unsigned int last_x = 0;
+			while (x < string::npos) {
+				name += g->substr(last_x, x - last_x) + '\\' + (*g)[x];
+				last_x = x + 1;
+				x = g->find_first_of("/|", x + 1);
+			}
+			name += g->substr(last_x, x - last_x);
+		}
+
+		DescendGroup(prefix + name, *g, depth + 1);
+	}
+	if (m_RDFLabelLookup.find(group) != m_RDFLabelLookup.end()) {
+		unsigned long uri_index = m_RDFLabelLookup[group];
+
+	// Create group for unclassified plugins
+		if (prefix.length() == 0) {
+			prefix = "Unclassified/";
+			depth = depth + 1;
+		}
+
+	// Temporary list (for sorting the plugins by name)
+		list<PluginEntry> plugins;
+
+		for (vector<unsigned long>::iterator p = m_RDFURIs[uri_index].Plugins.begin();
+			p != m_RDFURIs[uri_index].Plugins.end(); p++) {
+
+			PluginInfo *pi = &(m_Plugins[*p]);
+			string name;
+
+		// Escape '/' and '|' characters
+			unsigned int x = pi->Name.find_first_of("/|");
+			if (x == string::npos) {
+				name = pi->Name;
+			} else {
+				unsigned int last_x = 0;
+				while (x < string::npos) {
+					name += pi->Name.substr(last_x, x - last_x) + '\\' + pi->Name[x];
+					last_x = x + 1;
+					x = pi->Name.find_first_of("/|", x + 1);
+				}
+				name += pi->Name.substr(last_x, x - last_x);
+			}
+
+			PluginEntry pe;
+
+			pe.Depth = depth;
+			pe.UniqueID = pi->UniqueID;
+			pe.Name = prefix + name;
+
+			plugins.push_back(pe);
+		}
+		plugins.sort();
+
+	// Deal with duplicates by numbering them
+		for (list<PluginEntry>::iterator i = plugins.begin();
+			i != plugins.end(); ) {
+			string name = i->Name;
+
+			i++;
+			unsigned long n = 2;
+			while ((i != plugins.end()) && (i->Name == name)) {
+				stringstream s;
+				s << n;
+				i->Name = name + " (" + s.str() + ")";
+				n++;
+				i++;
+			}
+		}
+
+	// Add all ordered entries to the Menu List
+	// This ensures that plugins appear after groups
+		for (list<PluginEntry>::iterator p = plugins.begin(); p != plugins.end(); p++) {
+			m_SSMMenuList.push_back(*p);
+		}
+	}
+}
+
+// Get list of groups that are within given group. The root group is
+// always "LADSPA"
+list<string>
+LADSPAInfo::GetSubGroups(const string group)
+{
+	list<string> groups;
+	unsigned long uri_index;
+
+	if (m_RDFLabelLookup.find(group) == m_RDFLabelLookup.end()) {
+		return groups;
+	} else {
+		uri_index = m_RDFLabelLookup[group];
+	}
+
+	for (vector<unsigned long>::iterator sg = m_RDFURIs[uri_index].Children.begin();
+		sg != m_RDFURIs[uri_index].Children.end(); sg++) {
+		groups.push_back(m_RDFURIs[*sg].Label);
+	}
+
+	groups.sort();
+
+	return groups;
+}
+
+// Unload any loaded DLLs and clear vectors etc
+void
+LADSPAInfo::CleanUp(void)
+{
+	m_MaxInputPortCount = 0;
+
+	m_IDLookup.clear();
+	m_Plugins.clear();
+
+// Unload loaded dlls
+	for (vector<LibraryInfo>::iterator i = m_Libraries.begin();
+		i != m_Libraries.end(); i++) {
+		if (i->Handle) dlclose(i->Handle);
+	}
+
+	m_Libraries.clear();
+	m_Paths.clear();
+
+	m_RDFURILookup.clear();
+	m_RDFURIs.clear();
+
+	if (m_ExtraPaths) {
+		free(m_ExtraPaths);
+		m_ExtraPaths = NULL;
+	}
+}
+
+// Given a colon-separated list of paths, examine the contents of each
+// path, examining any regular files using the given member function,
+// which currently can be:
+//
+//   ExaminePluginLibrary - add plugin library info from plugins
+//   ExamineRDFFile       - add plugin information from .rdf/.rdfs files
+void
+LADSPAInfo::ScanPathList(const char *path_list,
+                         void (LADSPAInfo::*ExamineFunc)(const string,
+                                                         const string))
+{
+	const char *start;
+	const char *end;
+	int extra;
+	char *path;
+	string basename;
+	DIR *dp;
+	struct dirent *ep;
+	struct stat sb;
+
+// This does the same kind of thing as strtok, but strtok won't
+// like the const
+	start = path_list;
+	while (*start != '\0') {
+		while (*start == ':') start++;
+		end = start;
+		while (*end != ':' && *end != '\0') end++;
+
+		if (end - start > 0) {
+			extra = (*(end - 1) == '/') ? 0 : 1;
+			path = (char *)malloc(end - start + 1 + extra);
+			if (path) {
+				strncpy(path, start, end - start);
+				if (extra == 1) path[end - start] = '/';
+				path[end - start + extra] = '\0';
+
+				dp = opendir(path);
+				if (!dp) {
+					cerr << "WARNING: Could not open path " << path << endl;
+				} else {
+					while ((ep = readdir(dp))) {
+
+					// Stat file to get type
+						basename = ep->d_name;
+						if (!stat((path + basename).c_str(), &sb)) {
+
+						// We only want regular files
+							if (S_ISREG(sb.st_mode)) (*this.*ExamineFunc)(path, basename);
+						}
+					}
+					closedir(dp);
+				}
+				free(path);
+			}
+		}
+		start = end;
+	}
+}
+
+// Check given file is a valid LADSPA Plugin library
+//
+// If so, add path, library and plugin info
+// to the m_Paths, m_Libraries and m_Plugins vectors.
+//
+void
+LADSPAInfo::ExaminePluginLibrary(const string path,
+                                 const string basename)
+{
+	void *handle;
+	LADSPA_Descriptor_Function desc_func;
+	const LADSPA_Descriptor *desc;
+	string fullpath = path + basename;
+
+// We're not executing any code, so be lazy about resolving symbols
+	handle = dlopen(fullpath.c_str(), RTLD_LAZY);
+
+	if (!handle) {
+		cerr << "WARNING: File " << fullpath
+			<< " could not be examined" << endl;
+		cerr << "dlerror() output:" << endl;
+		cerr << dlerror() << endl;
+	} else {
+
+	// It's a DLL, so now see if it's a LADSPA plugin library
+		desc_func = (LADSPA_Descriptor_Function)dlsym(handle,
+													"ladspa_descriptor");
+		if (!desc_func) {
+
+		// Is DLL, but not a LADSPA one
+			cerr << "WARNING: DLL " << fullpath
+				<< " has no ladspa_descriptor function" << endl;
+			cerr << "dlerror() output:" << endl;
+			cerr << dlerror() << endl;
+		} else {
+
+		// Got ladspa_descriptor, so we can now get plugin info
+			bool library_added = false;
+			unsigned long i = 0;
+			desc = desc_func(i);
+			while (desc) {
+
+			// First, check that it's not a dupe
+				if (m_IDLookup.find(desc->UniqueID) != m_IDLookup.end()) {
+					unsigned long plugin_index = m_IDLookup[desc->UniqueID];
+					unsigned long library_index = m_Plugins[plugin_index].LibraryIndex;
+					unsigned long path_index = m_Libraries[library_index].PathIndex;
+
+					cerr << "WARNING: Duplicated Plugin ID ("
+						<< desc->UniqueID << ") found:" << endl;
+
+					cerr << "  Plugin " << m_Plugins[plugin_index].Index
+						<< " in library: " << m_Paths[path_index]
+						<< m_Libraries[library_index].Basename
+						<< " [First instance found]" << endl;
+					cerr << "  Plugin " << i << " in library: " << fullpath
+						<< " [Duplicate not added]" << endl;
+				} else {
+					if (CheckPlugin(desc)) {
+
+					// Add path if not already added
+						unsigned long path_index;
+						vector<string>::iterator p = find(m_Paths.begin(), m_Paths.end(), path);
+						if (p == m_Paths.end()) {
+							path_index = m_Paths.size();
+							m_Paths.push_back(path);
+						} else {
+							path_index = p - m_Paths.begin();
+						}
+
+					// Add library info if not already added
+						if (!library_added) {
+							LibraryInfo li;
+							li.PathIndex = path_index;
+							li.Basename = basename;
+							li.RefCount = 0;
+							li.Handle = NULL;
+							m_Libraries.push_back(li);
+
+							library_added = true;
+						}
+
+					// Add plugin info
+						PluginInfo pi;
+						pi.LibraryIndex = m_Libraries.size() - 1;
+						pi.Index = i;
+						pi.UniqueID = desc->UniqueID;
+						pi.Label = desc->Label;
+						pi.Name = desc->Name;
+						pi.Descriptor = NULL;
+						m_Plugins.push_back(pi);
+
+					// Find number of input ports
+						unsigned long in_port_count = 0;
+						for (unsigned long p = 0; p < desc->PortCount; p++) {
+							if (LADSPA_IS_PORT_INPUT(desc->PortDescriptors[p])) {
+								in_port_count++;
+							}
+						}
+						if (in_port_count > m_MaxInputPortCount) {
+							m_MaxInputPortCount = in_port_count;
+						}
+
+					// Add to index
+						m_IDLookup[desc->UniqueID] = m_Plugins.size() - 1;
+
+					} else {
+						cerr << "WARNING: Plugin " << desc->UniqueID << " not added" << endl;
+					}
+				}
+
+				desc = desc_func(++i);
+			}
+		}
+		dlclose(handle);
+	}
+}
+
+#ifdef HAVE_LIBLRDF
+// Examine given RDF plugin meta-data file
+void
+LADSPAInfo::ExamineRDFFile(const std::string path,
+                           const std::string basename)
+{
+	string fileuri = "file://" + path + basename;
+
+	if (lrdf_read_file(fileuri.c_str())) {
+		cerr << "WARNING: File " << path + basename << " could not be parsed [Ignored]" << endl;
+	}
+}
+
+// Recursively add rdf information for plugins that have been
+// found from scanning LADSPA_PATH
+void
+LADSPAInfo::MetadataRDFDescend(const char * uri,
+                               unsigned long parent)
+{
+	unsigned long this_uri_index;
+
+// Check URI not already added
+	if (m_RDFURILookup.find(uri) == m_RDFURILookup.end()) {
+
+	// Not found
+		RDFURIInfo ri;
+
+		ri.URI = uri;
+
+		if (ri.URI == LADSPA_BASE "Plugin") {
+
+		// Add top level group as "LADSPA"
+		// This will always happen, even if there are no .rdf files read by liblrdf
+		// or if there is no liblrdf support
+			ri.Label = "LADSPA";
+		} else {
+			char * label = lrdf_get_label(uri);
+			if (label) {
+				ri.Label = label;
+			} else {
+				ri.Label = "(No label)";
+			}
+		}
+
+	// Add any instances found
+		lrdf_uris * instances = lrdf_get_instances(uri);
+		if (instances) {
+			for (long j = 0; j < instances->count; j++) {
+				unsigned long uid = lrdf_get_uid(instances->items[j]);
+				if (m_IDLookup.find(uid) != m_IDLookup.end()) {
+					ri.Plugins.push_back(m_IDLookup[uid]);
+				}
+			}
+		}
+
+		lrdf_free_uris(instances);
+
+		m_RDFURIs.push_back(ri);
+		this_uri_index = m_RDFURIs.size() - 1;
+
+		m_RDFURILookup[ri.URI] = this_uri_index;
+		m_RDFLabelLookup[ri.Label] = this_uri_index;
+
+	} else {
+
+	// Already added
+		this_uri_index = m_RDFURILookup[uri];
+	}
+
+// Only add parent - child info if this uri is NOT the first (root) uri
+	if (this_uri_index > 0) {
+		m_RDFURIs[this_uri_index].Parents.push_back(parent);
+		m_RDFURIs[parent].Children.push_back(this_uri_index);
+	}
+
+	lrdf_uris * uris = lrdf_get_subclasses(uri);
+
+	if (uris) {
+		for (long i = 0; i < uris->count; i++) {
+			MetadataRDFDescend(uris->items[i], this_uri_index);
+		}
+	}
+
+	lrdf_free_uris(uris);
+}
+#endif
+
+bool
+LADSPAInfo::CheckPlugin(const LADSPA_Descriptor *desc)
+{
+#define test(t, m) { \
+	if (!(t)) { \
+		cerr << m << endl; \
+		return false; \
+	} \
+}
+	test(desc->instantiate, "WARNING: Plugin has no instatiate function");
+	test(desc->connect_port, "WARNING: Warning: Plugin has no connect_port funciton");
+	test(desc->run, "WARNING: Plugin has no run function");
+	test(!(desc->run_adding != 0 && desc->set_run_adding_gain == 0),
+			"WARNING: Plugin has run_adding but no set_run_adding_gain");
+	test(!(desc->run_adding == 0 && desc->set_run_adding_gain != 0),
+			"WARNING: Plugin has set_run_adding_gain but no run_adding");
+	test(desc->cleanup, "WARNING: Plugin has no cleanup function");
+	test(!LADSPA_IS_INPLACE_BROKEN(desc->Properties),
+			"WARNING: Plugin cannot use in place processing");
+	test(desc->PortCount, "WARNING: Plugin has no ports");
+
+	return true;
+}
+
+LADSPA_Descriptor_Function
+LADSPAInfo::GetDescriptorFunctionForLibrary(unsigned long library_index)
+{
+	LibraryInfo *li = &(m_Libraries[library_index]);
+
+	if (!(li->Handle)) {
+
+	// Need full path
+		string fullpath = m_Paths[li->PathIndex];
+		fullpath.append(li->Basename);
+
+	// Immediate symbol resolution, as plugin code is likely to be executed
+		li->Handle = dlopen(fullpath.c_str(), RTLD_NOW);
+		if (!(li->Handle)) {
+
+		// Plugin library changed since last path scan
+			cerr << "WARNING: Plugin library " << fullpath << " cannot be loaded" << endl;
+			cerr << "Rescan of plugins recommended" << endl;
+			cerr << "dlerror() output:" << endl;
+			cerr << dlerror() << endl;
+			return NULL;
+		}
+	}
+
+// Got handle so now verify that it's a LADSPA plugin library
+	const LADSPA_Descriptor_Function desc_func = (LADSPA_Descriptor_Function)dlsym(li->Handle,
+																				"ladspa_descriptor");
+	if (!desc_func) {
+
+	// Is DLL, but not a LADSPA one (changed since last path scan?)
+		cerr << "WARNING: DLL " << m_Paths[li->PathIndex] << li->Basename
+			<< " has no ladspa_descriptor function" << endl;
+		cerr << "Rescan of plugins recommended" << endl;
+		cerr << "dlerror() output:" << endl;
+		cerr << dlerror() << endl;
+
+	// Unload library
+		dlclose(li->Handle);
+		return NULL;
+	}
+
+	return desc_func;
+}

Mixer/LADSPAInfo.h

@@ -0,0 +1,199 @@
+//
+//  LADSPAInfo.h - Header file for LADSPA Plugin info class
+//
+//  Copyleft (C) 2002  Mike Rawes <myk@waxfrenzy.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
+//
+
+#ifndef __ladspa_info_h__
+#define __ladspa_info_h__
+
+// #include <config.h>
+
+#include <string>
+#include <vector>
+#include <list>
+#include <map>
+#include <ladspa.h>
+
+class LADSPAInfo
+{
+public:
+// If override is false, examine $LADSPA_PATH
+// Also examine supplied path list
+// For all paths, add basic plugin information for later lookup,
+// instantiation and so on.
+	LADSPAInfo(bool override = false, const char *path_list = "");
+
+// Unload all loaded plugins and clean up
+	~LADSPAInfo();
+
+// ************************************************************************
+// Loading/Unloading plugin libraries
+//
+// At first, no library dlls are loaded.
+//
+// A plugin library may have more than one plugin descriptor. The
+// descriptor is used to instantiate, activate, execute plugin instances.
+// Administration of plugin instances are outwith the scope of this class,
+// instead, descriptors are requested using GetDecriptorByID, and disposed
+// of using DiscardDescriptorByID.
+//
+// Each library keeps a reference count of descriptors requested. A library
+// is loaded when a descriptor is requested for the first time, and remains
+// loaded until the number of discards matches the number of requests.
+
+// Rescan all paths in $LADSPA_PATH, as per constructor.
+// This will also unload all libraries, and make any descriptors that
+// have not been discarded with DiscardDescriptorByID invalid.
+	void                            RescanPlugins(void);
+
+// Unload all dlopened libraries. This will make any descriptors that
+// have not been discarded with DiscardDescriptorByID invalid.
+	void                            UnloadAllLibraries(void);
+
+// Get descriptor of plugin with given ID. This increments the descriptor
+// count for the corresponding library.
+	const LADSPA_Descriptor        *GetDescriptorByID(unsigned long unique_id);
+
+// Notify that a descriptor corresponding to the given ID has been
+// discarded. This decrements the descriptor count for the corresponding
+// library.
+	void                            DiscardDescriptorByID(unsigned long unique_id);
+
+// ************************************************************************
+// SSM Specific options
+
+// Get unique ID of plugin identified by given library filename and label.
+// This is for backwards compatibility with older versions of SSM where the
+// path and label of the plugin was stored in the configuration - current
+// versions store the Unique ID
+	unsigned long                   GetIDFromFilenameAndLabel(std::string filename,
+	                                                          std::string label);
+
+// Struct for plugin information returned by queries
+	struct PluginEntry
+	{
+		unsigned int    Depth;
+		unsigned long   UniqueID;
+		std::string     Name;
+
+		bool operator<(const PluginEntry& pe)
+		{
+			return (Name<pe.Name);
+		}
+	};
+
+// Get ordered list of plugin names and IDs for plugin menu
+	const std::vector<PluginEntry>  GetMenuList(void);
+
+// Get the index in the above list for given Unique ID
+// If not found, this returns the size of the above list
+	unsigned long                   GetPluginListEntryByID(unsigned long unique_id);
+
+// Get the number of input ports for the plugin with the most
+// input ports
+	unsigned long                   GetMaxInputPortCount(void) { return m_MaxInputPortCount; }
+
+private:
+// See LADSPAInfo.C for comments on these functions
+	void                            DescendGroup(std::string prefix,
+	                                             const std::string group,
+	                                             unsigned int depth);
+	std::list<std::string>          GetSubGroups(const std::string group);
+
+	void                            CleanUp(void);
+	void                            ScanPathList(const char *path_list,
+	                                             void (LADSPAInfo::*ExamineFunc)(const std::string,
+	                                                                             const std::string));
+	void                            ExaminePluginLibrary(const std::string path,
+	                                                     const std::string basename);
+
+	bool                            CheckPlugin(const LADSPA_Descriptor *desc);
+	LADSPA_Descriptor_Function      GetDescriptorFunctionForLibrary(unsigned long library_index);
+#ifdef HAVE_LIBLRDF
+	void                            ExamineRDFFile(const std::string path,
+	                                               const std::string basename);
+	void                            MetadataRDFDescend(const char *uri,
+	                                                   unsigned long parent);
+#endif
+
+// For cached library information
+	struct LibraryInfo
+	{
+		unsigned long               PathIndex;      // Index of path in m_Paths
+		std::string                 Basename;       // Filename
+		unsigned long               RefCount;       // Count of descriptors requested
+		void                       *Handle;         // DLL Handle, NULL
+	};
+
+// For cached plugin information
+	struct PluginInfo
+	{
+		unsigned long               LibraryIndex;   // Index of library in m_Libraries
+		unsigned long               Index;          // Plugin index in library
+		unsigned long               UniqueID;       // Unique ID
+		std::string                 Label;          // Plugin label
+		std::string                 Name;           // Plugin Name
+		const LADSPA_Descriptor    *Descriptor;     // Descriptor, NULL
+	};
+
+// For cached RDF uri information
+	struct RDFURIInfo
+	{
+		std::string                 URI;            // Full URI for use with lrdf
+		std::string                 Label;          // Label
+		std::vector<unsigned long>  Parents;        // Index of parents in m_RDFURIs
+		std::vector<unsigned long>  Children;       // Indices of children in m_RDFURIs
+		std::vector<unsigned long>  Plugins;        // Indices of plugins in m_Plugins
+	};
+
+// Lookup maps
+	typedef std::map<unsigned long,
+	                 unsigned long,
+	                 std::less<unsigned long> >  IDMap;
+
+	typedef std::map<std::string,
+	                 unsigned long,
+	                 std::less<std::string> >    StringMap;
+
+	bool                            m_LADSPAPathOverride;
+	char                           *m_ExtraPaths;
+
+// LADSPA Plugin information database
+	std::vector<std::string>        m_Paths;
+	std::vector<LibraryInfo>        m_Libraries;
+	std::vector<PluginInfo>         m_Plugins;
+
+// Plugin lookup maps
+	IDMap                           m_IDLookup;
+
+// RDF URI database
+	std::vector<RDFURIInfo>         m_RDFURIs;
+
+// RDF URI lookup map
+	StringMap                       m_RDFURILookup;
+
+// RDF Label lookup map
+	StringMap                       m_RDFLabelLookup;
+
+// SSM specific data
+	std::vector<PluginEntry>        m_SSMMenuList;
+	StringMap                       m_FilenameLookup;
+	unsigned long                   m_MaxInputPortCount;
+};
+
+#endif // __ladspa_info_h__

Mixer/Meter.H

@@ -0,0 +1,138 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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.  */
+/*******************************************************************************/
+
+
+/* Base class for all meters */
+
+#include <FL/Fl.H>
+#include <FL/Fl_Widget.H>
+#include <FL/Fl_Valuator.H>
+class Meter : public Fl_Valuator
+{
+
+    float _peak;
+    float _old_value;
+    float _value;
+
+protected:
+
+    virtual void draw ( void ) = 0;
+    virtual int handle ( int m )
+        {
+
+            if ( m == FL_PUSH )
+            {
+//                if ( Fl::event_button3() )
+//                    hide();
+//                else
+                    reset();
+                    return 1;
+            }
+
+            return Fl_Widget::handle( m );
+        }
+
+    float
+    deflection ( float db )
+        {
+            float def = 0.0f;
+
+            if ( db < -70.0f )
+                def = 0.0f;
+            else if ( db < -60.0f )
+                def = ( db + 70.0f ) * 0.25f;
+            else if ( db < -50.0f )
+                def = ( db + 60.0f ) * 0.5f + 2.5f;
+            else if ( db < -40.0f )
+                def = ( db + 50.0f ) * 0.75f + 7.5f;
+            else if ( db < -30.0f )
+                def = ( db + 40.0f ) * 1.5f + 15.0f;
+            else if ( db < -20.0f )
+                def = ( db + 30.0f ) * 2.0f + 30.0f;
+            else if ( db < 6.0f )
+                def = ( db + 20.0f ) * 2.5f + 50.0f;
+            else
+                def = 115.0f;
+
+            return def / 115.0f;
+        }
+
+    float old_value ( void ) const { return _old_value; }
+
+public:
+
+    Meter ( int X, int Y, int W, int H,  const char *L = 0 ) :
+        Fl_Valuator( X, Y, W, H, L )
+        {
+            _peak = _value = -80.0f;
+            _old_value = 4.0f;
+        }
+
+    virtual ~Meter ( ) { }
+
+    void value ( float v )
+        {
+            if ( _value != v )
+            {
+                damage( FL_DAMAGE_USER1 );
+
+                _old_value = _value;
+                _value = v;
+
+                if ( _value > _peak )
+                    _peak = _value;
+            }
+        }
+
+    float value ( void ) const { return _value; }
+    float peak ( void ) const { return _peak; }
+
+    void reset ( void ) { _peak = -80.0f; redraw(); }
+
+};
+
+#include <FL/Fl_Group.H>
+#include <stdio.h>
+
+
+/* ... Extension methods for any group containing only meters. Access
+ * via a cast to (Meter_Pack *) */
+
+class Meter_Pack : public Fl_Group
+{
+
+public:
+
+/** return a pointer to the meter for channel /c/ in group of meters /g/ */
+    Meter *
+    channel ( int c )
+        {
+            if ( c > children() )
+            {
+                fprintf( stderr, "no such channel\n" );
+                return NULL;
+            }
+
+            return (Meter *)child( c );
+        }
+
+    int
+    channels ( void ) const { return children(); }
+
+};

Mixer/Meter_Indicator_Module.C

@@ -0,0 +1,180 @@
+
+/*******************************************************************************/
+/* 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 "Meter_Indicator_Module.H"
+
+#include <FL/Fl.H>
+#include <FL/Fl_Value_Slider.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Counter.H>
+#include "FL/Fl_Arc_Dial.H"
+#include "FL/Fl_Light_Button.H"
+#include "FL/Boxtypes.H"
+#include <FL/fl_draw.H>
+#include "FL/Fl_Labelpad_Group.H"
+#include <stdio.h>
+#include "Engine/Engine.H"
+#include "Chain.H"
+#include "DPM.H"
+#include "FL/Fl_Scalepack.H"
+
+
+
+const float CONTROL_UPDATE_FREQ = 0.1f;
+
+
+
+Meter_Indicator_Module::Meter_Indicator_Module ( int W, int H, const char *L )
+    : Module ( W, 100, L )
+{
+    box( FL_NO_BOX );
+
+    _pad = true;
+    control = 0;
+    control_value = 0;
+
+    add_port( Port( this, Port::INPUT, Port::CONTROL ) );
+
+    dpm_pack = new Fl_Scalepack( x(), y(), w(), h() );
+    dpm_pack->type( FL_HORIZONTAL );
+
+    control_value = new float[1];
+
+    end();
+
+    Fl::add_timeout( CONTROL_UPDATE_FREQ, update_cb, this );
+}
+
+Meter_Indicator_Module::~Meter_Indicator_Module ( )
+{
+
+}
+
+
+
+void
+Meter_Indicator_Module::update_cb ( void *v )
+{
+    ((Meter_Indicator_Module*)v)->update_cb();
+}
+
+void
+Meter_Indicator_Module::update_cb ( void )
+{
+    Fl::repeat_timeout( CONTROL_UPDATE_FREQ, update_cb, this );
+
+    if ( control_input[0].connected() )
+    {
+        // A little hack to detect that the connected module's number
+        // of control outs has changed.
+        Port *p = control_input[0].connected_port();
+
+        if ( dpm_pack->children() != p->hints.dimensions )
+        {
+            engine->lock();
+
+            dpm_pack->clear();
+
+            control_value = new float[p->hints.dimensions];
+
+            for ( int i = p->hints.dimensions; i--; )
+            {
+
+                DPM *dpm = new DPM( x(), y(), w(), h() );
+                dpm->type( FL_VERTICAL );
+                align( (Fl_Align)(FL_ALIGN_CENTER | FL_ALIGN_INSIDE ) );
+
+                dpm_pack->add( dpm );
+
+                control_value[i] = -70.0f;
+                dpm->value( -70.0f );
+            }
+
+            engine->unlock();
+        }
+        else
+        {
+            for ( int i = 0; i < dpm_pack->children(); ++i )
+            {
+                ((DPM*)dpm_pack->child( i ))->value( control_value[i] );
+            }
+        }
+    }
+
+
+    redraw();
+}
+
+void
+Meter_Indicator_Module::connect_to ( Port *p )
+{
+    control_input[0].connect_to( p );
+
+/*     else if ( p->hints.type == Module::Port::Hints::LOGARITHMIC ) */
+/*     { */
+    {
+        DPM *o = new DPM( x(), y(), this->w(), h() );
+        o->type( FL_VERTICAL );
+        align( (Fl_Align)(FL_ALIGN_CENTER | FL_ALIGN_INSIDE ) );
+
+        dpm_pack->add( o );
+    }
+
+//        control = o;
+//        w = o;
+
+//        o->value( p->control_value() );
+/*     } */
+
+/*     w->align(FL_ALIGN_TOP); */
+/*     w->labelsize( 10 ); */
+
+/*     if ( _pad ) */
+/*     { */
+/*         Fl_Labelpad_Group *flg = new Fl_Labelpad_Group( w ); */
+/*         size( flg->w(), flg->h() ); */
+/*         add( flg ); */
+/*     } */
+/*     else */
+/*     { */
+/*         w->resize( x(), y(), this->w(), h() ); */
+/*         add( w ); */
+/*         resizable( w ); */
+/*     } */
+}
+
+int
+Meter_Indicator_Module::handle ( int m )
+{
+    return Fl_Group::handle( m );
+}
+
+
+
+void
+Meter_Indicator_Module::process ( void )
+{
+    if ( control_input[0].connected() )
+    {
+        Port *p = control_input[0].connected_port();
+
+        for ( int i = 0; i < p->hints.dimensions; ++i )
+            control_value[i] = ((float*)control_input[0].buffer())[i];
+    }
+}

Mixer/Meter_Indicator_Module.H

@@ -0,0 +1,75 @@
+
+/*******************************************************************************/
+/* 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"
+#include <vector>
+#include "JACK/Port.H"
+
+class Fl_Valuator;
+class Fl_Scalepack;
+
+class Meter_Indicator_Module : public Module
+{
+    Fl_Scalepack *dpm_pack;
+
+    static void update_cb ( void *v );
+    void update_cb ( void );
+
+    bool _pad;
+
+    volatile float *control_value;
+
+public:
+
+    Meter_Indicator_Module ( int W, int H, const char *L=0 );
+    virtual ~Meter_Indicator_Module ( );
+
+    const char *name ( void ) const { return "Meter Indicator"; }
+
+    int can_support_inputs ( int n ) { return 0; }
+    bool configure_inputs ( int n ) { return false; }
+
+    void pad ( bool v ) { _pad = v; }
+
+    static void cb_handle ( Fl_Widget *w, void *v );
+    void cb_handle ( Fl_Widget *w );
+
+    void connect_to ( Port *p );
+
+protected:
+
+
+    //   virtual void draw ( void );
+    virtual void process ( void );
+
+    virtual void draw ( void )
+        {
+            draw_box();
+            Fl_Group::draw();
+        }
+
+    virtual int handle ( int m );
+
+private:
+
+    Fl_Valuator *control;
+
+};

Mixer/Meter_Module.C

@@ -0,0 +1,201 @@
+
+/*******************************************************************************/
+/* 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 "Meter_Module.H"
+#include "DPM.H"
+#include <FL/Fl.H>
+#include <FL/Fl_Single_Window.H>
+#include <FL/Fl_Scalepack.H>
+#include "JACK/Port.H"
+#include <math.h>
+
+
+
+const float METER_UPDATE_FREQ = 0.1f;
+
+
+
+Meter_Module::Meter_Module ( int W, int H, const char *L )
+    : Module ( W, 100, L )
+{
+    box( FL_THIN_UP_FRAME );
+    dpm_pack = new Fl_Scalepack( x(), y(), w(), h() );
+    dpm_pack->type( FL_HORIZONTAL );
+
+    color( FL_BLACK );
+
+    end();
+
+    Port p( this, Port::OUTPUT, Port::CONTROL, "dB level" );
+    p.hints.type = Port::Hints::LOGARITHMIC;
+    p.hints.ranged = true;
+    p.hints.maximum = 6.0f;
+    p.hints.minimum = -70.0f;
+    p.hints.dimensions = 1;
+    p.connect_to( new float[1] );
+    p.control_value_no_callback( -70.0f );
+
+    add_port( p );
+
+    Fl::add_timeout( METER_UPDATE_FREQ, update_cb, this );
+
+}
+
+Meter_Module::~Meter_Module ( )
+{
+}
+
+void
+Meter_Module::update_cb ( void *v )
+{
+    ((Meter_Module*)v)->update_cb();
+}
+
+void
+Meter_Module::update_cb ( void )
+{
+    Fl::repeat_timeout( METER_UPDATE_FREQ, update_cb, this );
+
+    for ( int i = dpm_pack->children(); i--; )
+        dpm_pack->child( i )->redraw();
+}
+
+bool
+Meter_Module::configure_inputs ( int n )
+{
+    int tx, ty, tw, th;
+    bbox( tx,ty,tw,th );
+
+    int on = audio_input.size();
+
+    if ( n > on )
+    {
+        for ( int i = on; i < n; ++i )
+        {
+            DPM *dpm = new DPM( tx, ty, tw, th );
+            dpm->type( FL_VERTICAL );
+            align( (Fl_Align)(FL_ALIGN_CENTER | FL_ALIGN_INSIDE ) );
+
+            dpm_pack->add( dpm );
+
+            add_port( Port( this, Port::INPUT, Port::AUDIO ) );
+            add_port( Port( this, Port::OUTPUT, Port::AUDIO ) );
+
+        }
+    }
+    else
+    {
+        for ( int i = on; i > n; --i )
+        {
+            DPM *dpm = (DPM*)dpm_pack->child( dpm_pack->children() - 1 );
+            dpm_pack->remove( dpm );
+            delete dpm;
+
+            audio_input.back().disconnect();
+            audio_input.pop_back();
+            audio_output.back().disconnect();
+            audio_output.pop_back();
+            control_output.back().disconnect();
+            control_output.pop_back();
+        }
+    }
+
+    control_output[0].hints.dimensions = n;
+    delete[] (float*)control_output[0].buffer();
+    {
+        float *f = new float[n];
+
+        for ( int i = n; i--; )
+            f[i] = -70.0f;
+
+        control_output[0].connect_to( f);
+    }
+
+    return true;
+}
+
+int
+Meter_Module::handle ( int m )
+{
+    switch ( m )
+    {
+        case FL_PUSH:
+        {
+/*             Fl_Single_Window *win = new Fl_Single_Window( 0, 0, 400, 400 ); */
+
+/*             win->add( dpm ); */
+/*             win->resizable( dpm ); */
+
+/*             win->end(); */
+
+/*             win->show(); */
+/*             break; */
+        }
+    }
+
+    return Module::handle( m );
+ }
+
+
+
+static float
+get_peak_sample ( const sample_t* buf, nframes_t nframes )
+{
+    float p = 0.0f;
+
+    const sample_t *f = buf;
+
+    for ( int j = nframes; j--; ++f )
+    {
+        float s = *f;
+
+        /* rectify */
+        if ( s < 0.0f )
+            s = 0 - s;
+
+        if ( s > p )
+            p = s;
+    }
+
+    return p;
+}
+
+void
+Meter_Module::process ( void )
+{
+    for ( int i = 0; i < audio_input.size(); ++i )
+    {
+        DPM *dpm = (DPM*)dpm_pack->child( i );
+        if ( audio_input[i].connected() )
+        {
+            dpm->activate();
+
+            float dB = 20 * log10( get_peak_sample( (float*)audio_input[i].buffer(), nframes() ) / 2.0f );
+
+            dpm->value( dB );
+
+/*             if ( control_output[i].connected() ) */
+/*             { */
+            ((float*)control_output[0].buffer())[i] = dB;
+/*             } */
+        }
+        else
+            dpm->deactivate();
+    }
+}

Mixer/Meter_Module.H

@@ -0,0 +1,51 @@
+
+/*******************************************************************************/
+/* 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 Fl_Scalepack;
+
+class Meter_Module : public Module
+{
+    Fl_Scalepack *dpm_pack;
+
+public:
+
+    Meter_Module ( int W, int H, const char *L=0 );
+    virtual ~Meter_Module ( );
+
+    const char *name ( void ) const { return "Meter"; }
+
+    int can_support_inputs ( int n ) { return n > 0 ? n : -1; }
+    bool configure_inputs ( int n );
+
+    static void update_cb ( void *v );
+    void update_cb ( void );
+
+protected:
+
+
+    //   virtual void draw ( void );
+    virtual int handle ( int m );
+    virtual void process ( void );
+
+
+};

Mixer/Mixer.C

@@ -0,0 +1,230 @@
+
+/*******************************************************************************/
+/* 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.  */
+/*******************************************************************************/
+
+/* This is the main mixer group. It contains and manages Mixer_Strips. */
+
+#include "Mixer.H"
+#include "Mixer_Strip.H"
+
+#include <FL/Fl_Pack.H>
+#include <FL/Fl_Scroll.H>
+
+#include "Engine/Engine.H"
+
+#include <string.h>
+#include "debug.h"
+
+const double STATUS_UPDATE_FREQ = 0.2f;
+
+static Fl_Pack *mixer_strips;
+
+
+#include "util/debug.h"
+
+static void update_cb( void *v ) {
+    Fl::repeat_timeout( STATUS_UPDATE_FREQ, update_cb, v );
+
+    ((Mixer*)v)->update();
+}
+
+Mixer::Mixer ( int X, int Y, int W, int H, const char *L ) :
+    Fl_Group( X, Y, W, H, L )
+{
+        label( "Non-Mixer" );
+        align( (Fl_Align)(FL_ALIGN_CENTER | FL_ALIGN_INSIDE) );
+        labelsize( 96 );
+    {
+        Fl_Scroll *o = scroll = new Fl_Scroll( 0, 0, W, H );
+        o->type( Fl_Scroll::HORIZONTAL_ALWAYS );
+        {
+            Fl_Pack *o = mixer_strips = new Fl_Pack( 0, 4, W, H - 24 );
+            o->type( Fl_Pack::HORIZONTAL );
+            o->spacing( 2 );
+            o->end();
+            Fl_Group::current()->resizable( o );
+        }
+        o->end();
+        Fl_Group::current()->resizable( o );
+    }
+
+    end();
+
+//    Fl::add_timeout( STATUS_UPDATE_FREQ, update_cb, this );
+
+    MESSAGE( "Scanning for plugins..." );
+
+}
+
+Mixer::~Mixer ( )
+{
+    /* FIXME: teardown */
+
+}
+
+void Mixer::resize ( int X, int Y, int W, int H )
+{
+    mixer_strips->size( W, H - 24 );
+
+    scroll->resize( X, Y, W, H );
+
+    Fl_Group::resize( X, Y, W, H );
+}
+
+void Mixer::add ( Mixer_Strip *ms )
+{
+    MESSAGE( "Add mixer strip \"%s\"", ms->name() );
+
+    engine->lock();
+
+    mixer_strips->add( ms );
+//    mixer_strips->insert( *ms, 0 );
+
+    engine->unlock();
+
+    redraw();
+}
+
+void Mixer::remove ( Mixer_Strip *ms )
+{
+    MESSAGE( "Remove mixer strip \"%s\"", ms->name() );
+
+    engine->lock();
+
+    mixer_strips->remove( ms );
+
+    engine->unlock();
+
+    delete ms;
+    parent()->redraw();
+}
+
+bool
+Mixer::contains ( Mixer_Strip *ms )
+{
+    return ms->parent() == mixer_strips;
+}
+
+void Mixer::update ( void )
+{
+    THREAD_ASSERT( UI );
+
+    for ( int i = mixer_strips->children(); i--; )
+    {
+        ((Mixer_Strip*)mixer_strips->child( i ))->update();
+    }
+    // redraw();
+}
+
+void
+Mixer::process ( unsigned int nframes )
+{
+    THREAD_ASSERT( RT );
+
+    for ( int i = mixer_strips->children(); i--; )
+    {
+        ((Mixer_Strip*)mixer_strips->child( i ))->process( nframes );
+    }
+}
+
+/** retrun a pointer to the track named /name/, or NULL if no track is named /name/ */
+Mixer_Strip *
+Mixer::track_by_name ( const char *name )
+{
+    for ( int i = mixer_strips->children(); i-- ; )
+    {
+        Mixer_Strip *t = (Mixer_Strip*)mixer_strips->child( i );
+
+        if ( ! strcmp( name, t->name() ) )
+            return t;
+    }
+
+    return NULL;
+}
+
+/** return a malloc'd string representing a unique name for a new track */
+char *
+Mixer::get_unique_track_name ( const char *name )
+{
+    char pat[256];
+
+    strcpy( pat, name );
+
+    for ( int i = 1; track_by_name( pat ); ++i )
+        snprintf( pat, sizeof( pat ), "%s.%d", name, i );
+
+    return strdup( pat );
+}
+
+
+void
+Mixer::snapshot ( void )
+{
+    for ( int i = 0; i < mixer_strips->children(); ++i )
+        ((Mixer_Strip*)mixer_strips->child( i ))->log_create();
+}
+
+
+void
+Mixer::new_strip ( void )
+{
+    engine->lock();
+
+    add( new Mixer_Strip( get_unique_track_name( "Unnamed" ), 1 ) );
+
+    engine->unlock();
+
+//    scroll->size( mixer_strips->w(), scroll->h() );
+}
+
+int
+Mixer::handle ( int m )
+{
+    int r = Fl_Group::handle( m );
+
+    switch ( m )
+    {
+        case FL_ENTER:
+        case FL_LEAVE:
+            return 1;
+        case FL_SHORTCUT:
+        {
+            if ( Fl::event_key() == 'a' )
+            {
+                new_strip();
+                return 1;
+            }
+            else if ( Fl::event_ctrl() && Fl::event_key() == 's' )
+            {
+                MESSAGE( "Saving state" );
+                Loggable::snapshot_callback( &Mixer::snapshot, this );
+                Loggable::snapshot( "save.mix" );
+                return 1;
+            }
+            else
+                return r;
+            break;
+        }
+        default:
+            return r;
+            break;
+    }
+
+    // return 0;
+    return r;
+}

Mixer/Mixer.H

@@ -0,0 +1,63 @@
+
+/*******************************************************************************/
+/* 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 <FL/Fl.H>
+#include <FL/Fl_Widget.H>
+#include <FL/Fl_Group.H>
+#include <FL/Fl_Scroll.H>
+#include <FL/Fl_Pack.H>
+#include "Mixer_Strip.H"
+
+class Mixer : public Fl_Group
+{
+
+private:
+
+    Mixer_Strip* track_by_name ( const char *name );
+    char * get_unique_track_name ( const char *name );
+
+    void snapshot ( void );
+    static void snapshot ( void *v ) { ((Mixer*)v)->snapshot(); }
+
+    Fl_Scroll *scroll;
+    Fl_Pack *pack;
+
+protected:
+
+    virtual int handle ( int m );
+
+public:
+
+    virtual void resize ( int X, int Y, int W, int H );
+
+    void update ( void );
+
+    void new_strip ( void );
+    void process ( unsigned int nframes );
+    void add ( Mixer_Strip *ms );
+    void remove ( Mixer_Strip *ms );
+    bool contains ( Mixer_Strip *ms );
+
+    Mixer ( int X, int Y, int W, int H, const char *L );
+    virtual ~Mixer();
+};
+
+extern Mixer* mixer;

Mixer/Mixer_Strip.C

@@ -0,0 +1,471 @@
+
+/*******************************************************************************/
+/* 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.  */
+/*******************************************************************************/
+
+/* Mixer strip control. Handles GUI and control I/O for this strip. */
+
+/* A mixer strip is home to some (JACK) input ports, a fader, some
+ * meters, and a filter chain which can terminate either at the input
+ * to the spacializer or some (JACK) output ports. Since mixer strips
+ * are not necessarily in a 1:1 association with Non-DAW tracks, there
+ * is no need for busses per se. If you want to route the output of
+ * several strips into a single fader or filter chain, then you just
+ * gives those strips JACK outputs and connect them to the common
+ * inputs. This mechanism can also do away with the need for 'sends'
+ * and 'inserts'.
+
+ */
+/* Each mixer strip comprises a fader and a panner */
+
+#include "Mixer_Strip.H"
+#include "Engine/Engine.H"
+#include <dsp.h>
+#include <string.h>
+#include "debug.h"
+
+
+#include <FL/Fl_Tabs.H>
+#include "FL/Fl_Flowpack.H"
+#include "Mixer.H"
+
+#include "Chain.H"
+#include "Gain_Module.H"
+#include "Meter_Module.H"
+#include "Controller_Module.H"
+#include "Meter_Indicator_Module.H"
+#include "util/debug.h"
+
+extern Mixer *mixer;
+
+
+
+void
+Mixer_Strip::get ( Log_Entry &e ) const
+{
+    e.add( ":name",            name()           );
+//    e.add( ":controllable",    controllable() );
+//    e.add( ":inputs",          _in.size()     );
+/*     e.add( ":gain",            gain_slider->value() ); */
+    e.add( ":meter_point",      prepost_button->value() ? "pre" : "post" );
+    e.add( ":color",           (unsigned long)color());
+
+}
+
+void
+Mixer_Strip::set ( Log_Entry &e )
+{
+    for ( int i = 0; i < e.size(); ++i )
+    {
+        const char *s, *v;
+
+        e.get( i, &s, &v );
+
+        if ( ! strcmp( s, ":name" ) )
+            name( v );
+//        else if ( ! strcmp( s, ":controllable" ) )
+//            controllable( atoi( v ) );
+        else if ( ! strcmp( s, ":inputs" ) )
+            configure_ports( atoi( v ) );
+/*         else if ( ! strcmp( s, ":gain" ) ) */
+/*             gain_slider->value( atof( v ) ); */
+        else if ( ! strcmp( s, ":meter_point" ) )
+            prepost_button->value( strcmp( v, "pre" ) == 0 );
+        else if ( ! strcmp( s, ":color" ) )
+        {
+            color( (Fl_Color)atoll( v ) );
+            redraw();
+        }
+    }
+
+    if ( ! mixer->contains( this ) )
+        mixer->add( this );
+}
+
+
+Mixer_Strip::Mixer_Strip( const char *strip_name, int channels ) : Fl_Group( 0, 0, 120, 600 )
+{
+
+    label( strdup( strip_name ) );
+
+    init();
+
+    color( (Fl_Color)rand() );
+
+//    name( strdup( strip_name ) );
+
+    configure_ports( channels );
+
+    log_create();
+}
+
+Mixer_Strip::Mixer_Strip() : Fl_Group( 0, 0, 120, 600 )
+{
+    init();
+
+    log_create();
+}
+
+Mixer_Strip::~Mixer_Strip ( )
+{
+    configure_ports( 0 );
+}
+
+
+
+void Mixer_Strip::cb_handle(Fl_Widget* o) {
+    // parent()->parent()->damage( FL_DAMAGE_ALL, x(), y(), w(), h() );
+    if ( o == close_button )
+        ((Mixer*)parent())->remove( this );
+    else if ( o == inputs_counter )
+        configure_ports( ((Fl_Counter*)o)->value() );
+    else if ( o == name_field )
+        name( name_field->value() );
+/*     else if ( o == controllable_button ) */
+/*     { */
+/*         controllable( controllable_button->value() ); */
+/* //        configure_ports( channels() ); */
+/*     } */
+    else if ( o == prepost_button )
+    {
+        if ( ((Fl_Button*)o)->value() )
+            size( 300, h() );
+        else
+            size( 120, h() );
+
+        parent()->parent()->redraw();
+    }
+}
+
+void Mixer_Strip::cb_handle(Fl_Widget* o, void* v) {
+    ((Mixer_Strip*)(v))->cb_handle(o);
+}
+
+
+void
+Mixer_Strip::name ( const char *name ) {
+    char *s = strdup( name );
+    name_field->value( s );
+    label( s );
+    chain->name( s );
+}
+
+void
+Mixer_Strip::configure_outputs ( Fl_Widget *o, void *v )
+{
+    ((Mixer_Strip*)v)->configure_outputs();
+}
+
+void
+Mixer_Strip::configure_outputs ( void )
+{
+    DMESSAGE( "Got signal to configure outputs" );
+}
+
+bool
+Mixer_Strip::configure_ports ( int n )
+{
+/*     /\* figure out how many buffers we have to create *\/ */
+/*     int required_buffers = chain->required_buffers(); */
+
+/*     engine->lock(); */
+
+/*     if ( chain_buffers > 0 ) */
+/*     { */
+/*         for ( int i = chain_buffers; --i; ) */
+/*         { */
+/*             delete chain_buffer[i]; */
+/*             chain_buffer[i] = NULL; */
+/*         } */
+/*         delete chain_buffer; */
+/*         chain_buffer = NULL; */
+/*         chain_buffers = 0; */
+/*     } */
+
+/*     sample_t **buf = new sample_t*[required_buffers]; */
+/*     for ( int i = 0; i < required_buffers; ++i ) */
+/*         buf[i] = new sample_t[nframes]; */
+
+/*     chain_buffers = required_buffers; */
+/*     chain_buffer = buf; */
+
+/*     engine->unlock(); */
+
+/*     /\* FIXME: bogus *\/ */
+/*     return true; */
+
+}
+
+
+
+void
+Mixer_Strip::process ( nframes_t nframes )
+{
+    THREAD_ASSERT( RT );
+
+/*     sample_t *gain_buf = NULL; */
+/*     float g = gain_slider->value(); */
+
+/*     if ( _control && _control->connected() ) */
+/*     { */
+/*         gain_buf = (sample_t*)_control->buffer( nframes ); */
+
+/* /\*         // bring it up to 0.0-2.0f *\/ */
+/* /\*         for ( int i = nframes; i--; ) *\/ */
+/* /\*             gain_buf[i] += 1.0f; *\/ */
+
+/*         // apply gain from slider */
+/*         buffer_apply_gain( gain_buf, nframes, g ); */
+
+/*         /\* FIXME: bullshit! *\/ */
+/*         _control_peak = gain_buf[0]; */
+/*     } */
+/*     else */
+/*     { */
+/*         _control_peak = 0; */
+/*     } */
+
+/*     for ( int i = channels(); i--; ) */
+/*     { */
+/*         if ( _in[i].connected()) */
+/*         { */
+/*             if ( gain_buf ) */
+/*                 buffer_copy_and_apply_gain_buffer( (sample_t*)_out[i].buffer( nframes ), (sample_t*)_in[i].buffer( nframes ), gain_buf, nframes ); */
+/*             else */
+/*                 buffer_copy_and_apply_gain( (sample_t*)_out[i].buffer( nframes ), (sample_t*)_in[i].buffer( nframes ),  nframes, g ); */
+
+/*             sample_t *meter_buffer = prepost_button->value() == 1 ? (sample_t*)_in[i].buffer( nframes ) : (sample_t*)_out[i].buffer( nframes ); */
+
+/*             /\* set peak value (in dB) *\/ */
+/*             _peak[i] = 20 * log10( get_peak_sample( meter_buffer, nframes ) / 2.0f ); */
+/*         } */
+/*         else */
+/*         { */
+/*             buffer_fill_with_silence( (sample_t*)_out[i].buffer( nframes ), nframes ); */
+/*         } */
+/*     } */
+
+    chain->process( nframes );
+}
+
+/* update GUI with values from RT thread */
+void
+Mixer_Strip::update ( void )
+{
+    THREAD_ASSERT( UI );
+}
+
+void
+Mixer_Strip::init ( )
+{
+    chain_buffers = 0;
+    chain_buffer = NULL;
+
+    box(FL_THIN_UP_BOX);
+    clip_children( 1 );
+
+    Fl_Pack *gain_pack;
+
+    { Fl_Pack *o = new Fl_Pack( 2, 2, 114, 100 );
+        o->type( Fl_Pack::VERTICAL );
+        o->spacing( 2 );
+        {
+            Fl_Input *o = name_field = new Fl_Sometimes_Input( 2, 2, 144, 24 );
+            o->color( color() );
+            o->box( FL_FLAT_BOX );
+            o->labeltype( FL_NO_LABEL );
+            o->labelcolor( FL_GRAY0 );
+            o->textcolor( FL_FOREGROUND_COLOR );
+            o->value( name() );
+            o->callback( cb_handle, (void*)this );
+
+        }
+        { Fl_Scalepack *o = new Fl_Scalepack( 7, 143, 110, 25 );
+            o->type( Fl_Pack::HORIZONTAL );
+            { Fl_Button* o = close_button = new Fl_Button(7, 143, 35, 25, "X");
+                o->tooltip( "Remove strip" );
+                o->type(0);
+                o->labeltype( FL_EMBOSSED_LABEL );
+                o->color( FL_LIGHT1 );
+                o->selection_color( FL_RED );
+                o->labelsize(10);
+                o->callback( ((Fl_Callback*)cb_handle), this );
+            } // Fl_Button* o
+            o->end();
+        } // Fl_Group* o
+        { Fl_Flip_Button* o = prepost_button = new Fl_Flip_Button(61, 183, 45, 22, "narrow/wide");
+            o->type(1);
+//            o->box(FL_ROUNDED_BOX);
+            o->box( FL_THIN_DOWN_BOX );
+            o->color((Fl_Color)106);
+            o->selection_color((Fl_Color)65);
+            o->labeltype(FL_NORMAL_LABEL);
+            o->labelfont(0);
+            o->labelsize(14);
+            o->labelcolor(FL_FOREGROUND_COLOR);
+            o->align(FL_ALIGN_CLIP);
+            o->callback( ((Fl_Callback*)cb_handle), this );
+            o->when(FL_WHEN_RELEASE);
+        } // Fl_Flip_Button* o
+//    { Fl_Pack* o = new Fl_Pack(8, 208, 103, 471);
+//    { Fl_Pack* o = gain_pack = new Fl_Pack(8, 208, 103, 516 );
+
+        o->end();
+    }
+
+    Fl_Pack *fader_pack;
+
+    { Fl_Tabs *o = new Fl_Tabs( 4, 104, 110, 330 );
+        o->clip_children( 1 );
+        o->box( FL_NO_BOX );
+        { Fl_Group *o = new Fl_Group( 4, 114, 110, 330, "Fader" );
+            o->labelsize( 9 );
+            o->box( FL_NO_BOX );
+            { Fl_Pack* o = fader_pack = new Fl_Pack(4, 116, 103, 330 );
+                o->spacing( 20 );
+                o->type( Fl_Pack::HORIZONTAL );
+                o->end();
+                Fl_Group::current()->resizable(o);
+            } // Fl_Group* o
+            o->end();
+            Fl_Group::current()->resizable(o);
+        }
+        { Fl_Group *o = new Fl_Group( 4, 114, 110, 330, "Signal" );
+            o->labelsize( 9 );
+            o->hide();
+            { Chain *o = chain = new Chain( 4, 116, 110, 330 );
+                o->labelsize( 10 );
+                o->align( FL_ALIGN_TOP );
+                o->color( FL_RED );
+                o->configure_outputs_callback( configure_outputs, this );
+                o->name( name() );
+                o->initialize_with_default();
+                Fl_Group::current()->resizable(o);
+            }
+            o->end();
+        }
+
+        o->end();
+        Fl_Group::current()->resizable(o);
+    }
+
+    { Fl_Pack *o = new Fl_Pack( 2, 440, 114, 40 );
+        o->spacing( 2 );
+        o->type( Fl_Pack::VERTICAL );
+
+        { Fl_Box *o = new Fl_Box( 0, 0, 100, 24 );
+            o->align( (Fl_Align)(FL_ALIGN_BOTTOM | FL_ALIGN_INSIDE) );
+            o->labelsize( 10 );
+            o->label( "Pan" );
+        }
+        { Panner* o = new Panner(0, 0, 110, 90);
+            o->box(FL_THIN_UP_BOX);
+            o->color(FL_GRAY0);
+            o->selection_color(FL_BACKGROUND_COLOR);
+            o->labeltype(FL_NORMAL_LABEL);
+            o->labelfont(0);
+            o->labelsize(11);
+            o->labelcolor(FL_FOREGROUND_COLOR);
+            o->align(FL_ALIGN_TOP);
+            o->when(FL_WHEN_RELEASE);
+        } // Panner* o
+        {
+            Controller_Module *m = new Controller_Module( 100, 24, "Inputs" );
+            m->chain( chain );
+            m->pad( false );
+            m->connect_to( &chain->module( 0 )->control_input[1] );
+            m->size( 33, 24 );
+        }
+        o->end();
+    }
+
+    end();
+
+    color( FL_BLACK );
+//    controllable( true );
+
+    {
+        Module *gain_module;
+
+        {
+            Module *m = gain_module = new Gain_Module( 50, 50, "Gain" );
+            m->initialize();
+            chain->insert( chain->module( chain->modules() - 1 ), m );
+        }
+
+        {
+            Controller_Module *m = new Controller_Module( 100, 0, "Gain" );
+            m->chain( chain );
+            m->pad( false );
+            m->connect_to( &gain_module->control_input[0] );
+            m->size( 33, 0 );
+
+            fader_pack->add( m );
+        }
+
+        Module *meter_module;
+
+        {
+            Module *m = meter_module = new Meter_Module( 50, 50, "Meter" );
+            chain->insert( chain->module( chain->modules() - 1 ), m );
+        }
+        {
+            Meter_Indicator_Module *m = new Meter_Indicator_Module( 100, 0, "" );
+            m->chain( chain );
+            m->pad( false );
+            m->connect_to( &meter_module->control_output[0] );
+            m->size( 58, 0 );
+            m->clip_children( 0 );
+
+            fader_pack->add( m );
+
+            fader_pack->resizable( m );
+        }
+
+        chain->configure_ports();
+    }
+
+}
+
+
+int
+Mixer_Strip::handle ( int m )
+{
+    Logger log( this );
+
+    static Fl_Color orig_color;
+
+    switch ( m )
+    {
+        case FL_ENTER:
+//            orig_color = color();
+//            color( FL_BLACK );
+            redraw();
+            return 1;
+            break;
+        case FL_LEAVE:
+//            color( orig_color );
+            redraw();
+            return 1;
+            break;
+        default:
+            return Fl_Group::handle( m );
+
+    }
+
+    return 0;
+}

Mixer/Mixer_Strip.H

@@ -0,0 +1,100 @@
+// generated by Fast Light User Interface Designer (fluid) version 1.0108
+
+#ifndef Mixer_Strip_H
+#define Mixer_Strip_H
+#include <FL/Fl.H>
+#include "DPM.H"
+#include "Panner.H"
+#include <FL/Fl_Scalepack.H>
+#include <FL/Fl_Pack.H>
+#include <FL/Fl_Flip_Button.H>
+#include <FL/Fl_Arc_Dial.H>
+#include <FL/Boxtypes.H>
+#include <FL/Fl_Group.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Button.H>
+#include <FL/Fl_Value_Slider.H>
+#include <FL/Fl_Counter.H>
+#include <FL/Fl_Progress.H>
+#include <FL/Fl_Input.H>
+//#include "Fader.H"
+#include <JACK/Port.H>
+
+
+#include "../FL/Fl_Sometimes_Input.H"
+
+#include "Loggable.H"
+class Chain;
+class Fl_Flowpack;
+
+class Mixer_Strip : public Fl_Group, public Loggable {
+
+public:
+
+    Mixer_Strip(int X, int Y, int W, int H, const char *L = 0);
+    Mixer_Strip( const char *name, int channels );
+    Mixer_Strip();                                              /* for log create */
+    ~Mixer_Strip();
+
+//    Fl_Value_Slider *gain_slider;
+    Fl_Flip_Button *prepost_button;
+    Fl_Button *close_button;
+    Fl_Input *name_field;
+
+    Fl_Flowpack *controls_pack;
+
+    Chain *chain;
+
+    sample_t **chain_buffer;
+    int chain_buffers;
+
+    nframes_t nframes;
+
+private:
+
+    unsigned _color;
+
+    void init ( );
+    void cb_handle(Fl_Widget*);
+    static void cb_handle(Fl_Widget*, void*);
+
+    void update_port_names ( void );
+
+protected:
+
+    void get ( Log_Entry &e ) const;
+    void set ( Log_Entry &e );
+
+    virtual int handle ( int m );
+
+public:
+
+    void color ( Fl_Color c )
+        {
+            _color = c;
+            name_field->color( _color );
+            name_field->redraw();
+        }
+
+    Fl_Color color ( void ) const
+        {
+            return name_field->color();
+        }
+
+    LOG_CREATE_FUNC( Mixer_Strip );
+
+    Fl_Counter *inputs_counter;
+    void process ( unsigned int nframes );
+
+    static void configure_outputs ( Fl_Widget *o, void *v );
+    void configure_outputs ( void );
+
+    bool configure_ports ( int n );
+
+    void update ( void );
+
+    // int channels ( void ) const { return _in.size(); }
+    void name ( const char *name );
+    const char *name ( void ) const { return label(); }
+};
+#endif

Mixer/Module.C

@@ -0,0 +1,169 @@
+
+/*******************************************************************************/
+/* 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 "Module.H"
+#include <FL/fl_draw.H>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "Module_Parameter_Editor.H"
+
+
+
+Module::~Module ( )
+{
+    for ( unsigned int i = 0; i < audio_input.size(); ++i )
+        audio_input[i].disconnect();
+    for ( unsigned int i = 0; i < audio_output.size(); ++i )
+        audio_output[i].disconnect();
+    for ( unsigned int i = 0; i < control_input.size(); ++i )
+        control_input[i].disconnect();
+    for ( unsigned int i = 0; i < control_output.size(); ++i )
+        control_output[i].disconnect();
+
+    audio_input.clear();
+    audio_output.clear();
+    control_input.clear();
+    control_output.clear();
+}
+
+
+
+void
+Module::draw_box ( void )
+{
+    fl_color( FL_WHITE );
+
+    int tw, th, tx, ty;
+
+    tw = w();
+    th = h();
+    ty = y();
+    tx = x();
+
+//    bbox( tx, ty, tw, th );
+
+    fl_push_clip( tx, ty, tw, th );
+
+    int spacing = w() / instances();
+    for ( int i = instances(); i--; )
+    {
+        fl_draw_box( box(), tx + (spacing * i), ty, tw / instances(), th, Fl::belowmouse() == this ? fl_lighter( color() ) : color() );
+    }
+
+    if ( audio_input.size() && audio_output.size() )
+    {
+        /* maybe draw control indicators */
+        if ( control_input.size() )
+            fl_draw_box( FL_ROUNDED_BOX, tx + 4, ty + 4, 5, 5, is_being_controlled() ? FL_YELLOW : fl_inactive( FL_YELLOW ) );
+        if ( control_output.size() )
+            fl_draw_box( FL_ROUNDED_BOX, tx + tw - 8, ty + 4, 5, 5, is_controlling() ? FL_YELLOW : fl_inactive( FL_YELLOW ) );
+    }
+
+    fl_pop_clip();
+//    box( FL_NO_BOX );
+
+    Fl_Group::draw_children();
+}
+
+void
+Module::draw_label ( void )
+{
+    int tw, th, tx, ty;
+
+    bbox( tx, ty, tw, th );
+
+    const char *lp = label();
+
+    int l = strlen( label() );
+
+    fl_color( FL_FOREGROUND_COLOR );
+    char *s = NULL;
+
+    if ( l > 10 )
+    {
+        s = new char[l];
+        char *sp = s;
+
+        for ( ; *lp; ++lp )
+            switch ( *lp )
+            {
+                case 'i': case 'e': case 'o': case 'u': case 'a':
+                    break;
+                default:
+                    *(sp++) = *lp;
+            }
+        *sp = '\0';
+
+    }
+
+    if ( l > 20 )
+        fl_font( FL_HELVETICA, 10 );
+    else
+        fl_font( FL_HELVETICA, 14 );
+
+    fl_draw( s ? s : lp, tx, ty, tw, th, (Fl_Align)(FL_ALIGN_CENTER | FL_ALIGN_INSIDE) );
+
+
+    if ( s )
+        delete[] s;
+}
+
+#include "FL/test_press.H"
+
+int
+Module::handle ( int m )
+{
+    switch ( m )
+    {
+        case FL_PUSH:
+        {
+            if ( test_press( FL_BUTTON1 ) )
+            {
+                if ( _editor )
+                {
+                    _editor->show();
+                }
+                else if ( ncontrol_inputs() )
+                {
+
+                    DMESSAGE( "Opening module parameters for \"%s\"", label() );
+                    _editor = new Module_Parameter_Editor( this );
+
+                    _editor->show();
+
+                    do { Fl::wait(); }
+                    while ( _editor->shown() );
+
+                    DMESSAGE( "Module parameters for \"%s\" closed",label() );
+
+                    delete _editor;
+
+                    _editor = NULL;
+                }
+
+                return 1;
+            }
+            break;
+        }
+    }
+
+    return Fl_Group::handle( m );
+}

Mixer/Module.H

@@ -0,0 +1,321 @@
+
+/*******************************************************************************/
+/* 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 <FL/Fl.H>
+#include <FL/Fl_Widget.H>
+#include <FL/Fl_Button.H>
+#include <FL/Fl_Group.H>
+
+#include <stdlib.h>
+#include "util/debug.h"
+#include <vector>
+
+#include "util/Thread.H"
+
+class Chain;
+class Module_Parameter_Editor;
+
+class Module : public Fl_Group {
+
+    void init ( void )
+        {
+            _editor = 0;
+            _chain = 0;
+            _instances = 1;
+            box( FL_UP_BOX );
+            labeltype( FL_NO_LABEL );
+            clip_children( 1 );
+        }
+
+    int _ins;
+    int _outs;
+    int _instances;
+    unsigned long _nframes;
+    Chain *_chain;
+
+    Module_Parameter_Editor *_editor;
+
+    void cb_handle(Fl_Widget*);
+    static void cb_handle(Fl_Widget*, void*);
+
+
+
+public:
+
+    class Port
+    {
+        /* char *type_names[] = { "Audio", "Control" }; */
+        /* char *direction_names[] = { "Input", "Output" }; */
+
+
+    public:
+
+        enum Direction { INPUT, OUTPUT };
+        enum Type { AUDIO, CONTROL };
+
+        /* hints for control ports (specifically control inputs) */
+        struct Hints
+        {
+            enum Type { LINEAR, LOGARITHMIC, BOOLEAN, INTEGER };
+
+            Type type;
+            bool ranged;
+            float minimum;
+            float maximum;
+            float default_value;
+            int dimensions;
+
+            Hints ( )
+                {
+                    type = LINEAR;
+                    ranged = false;
+                    minimum = 0;
+                    maximum = 0;
+                    default_value = 0.0f;
+                    dimensions = 1;
+                }
+        };
+
+        Hints hints;
+
+        Port ( Module *module, Direction direction, Type type, const char *name = 0 )
+            {
+                _name = name;
+                _direction = direction;
+                _type = type;
+                _buf = 0;
+                _nframes = 0;
+                _connected = 0;
+                _module = module;
+            }
+
+        Port ( const Port& p )
+            {
+                _name = p._name;
+                _direction = p._direction;
+                _type = p._type;
+                _buf = p._buf;
+                _nframes = p._nframes;
+                _connected = p._connected;
+                _module = p._module;
+                hints = p.hints;
+            }
+
+        virtual ~Port ( )
+            {
+                //   disconnect();
+            }
+
+        const char *name ( void ) const { return _name; }
+        Type type ( void ) const { return _type; }
+        Direction direction ( void ) const  { return _direction; }
+
+        Module * module ( void ) const { return _module; }
+        unsigned long nframes ( void ) const { return _nframes; }
+
+        void buffer ( void *buf, unsigned long nframes ) { _buf = buf; _nframes = nframes; };
+        void *buffer ( void ) const { return _buf; }
+
+        void control_value_no_callback ( float f )
+            {
+                THREAD_ASSERT( UI );
+
+                if ( buffer() )
+                {
+                    *((float*)buffer()) = f;
+                }
+            }
+
+        void control_value ( float f )
+            {
+                control_value_no_callback( f );
+                _module->handle_control_changed( this );
+            }
+
+        float control_value ( ) const
+            {
+                if ( buffer() )
+                    return *((float*)buffer());
+                else
+                    return 0.0f;
+            }
+
+        bool connected ( void ) const { return _connected; }
+
+        Port *connected_port ( void ) const
+            {
+                return _connected;
+            }
+
+        void connect_to ( Port *to )
+            {
+                _buf = to->_buf;
+                to->_connected = this;
+                _connected = to;
+            }
+
+        void connect_to ( void *buf )
+            {
+                _buf = buf;
+//                _connected = (Port*)0x01;
+            }
+
+        void disconnect ( void )
+            {
+                if ( _connected && _connected != (void*)0x01 )
+                {
+                    _connected->_connected = NULL;
+                    _connected = NULL;
+                }
+                else
+                    _connected = NULL;
+
+                /* FIXME: do something! */
+            }
+
+    private:
+
+        Port *_connected;
+        Type _type;
+        Direction _direction;
+        const char *_name;
+        void *_buf;
+        unsigned long _nframes;
+        Module *_module;
+    };
+
+    void bbox ( int &X, int &Y, int &W, int &H )
+        {
+            X = x() + 5;
+            Y = y() + 5;
+            W = w() - 10;
+            H = h() - 10;
+        }
+
+    Module ( int W, int H, const char *L = 0 ) : Fl_Group( 0, 0, W, H, L )
+        {
+            init();
+        }
+    Module ( ) : Fl_Group( 0, 0, 0, 50, "Unnamed" )
+        {
+            init();
+        }
+    virtual ~Module ( );
+
+//    static Module * pick_plugin ( void );
+
+
+    unsigned long nframes ( void ) const { return _nframes; }
+    void nframes ( unsigned long v ) { _nframes = v; }
+
+
+    int instances ( void ) const { return _instances; }
+
+    bool is_being_controlled ( void ) const
+        {
+            for ( unsigned int i = control_input.size(); i--; )
+                if ( control_input[i].connected() )
+                    return true;
+            return false;
+        }
+
+    bool is_controlling ( void ) const
+        {
+            for ( unsigned int i = control_output.size(); i--; )
+                if ( control_output[i].connected() )
+                    return true;
+            return false;
+        }
+
+    virtual const char *name ( void ) const = 0;
+
+    std::vector<Port> audio_input;
+    std::vector<Port> audio_output;
+    std::vector<Port> control_input;
+    std::vector<Port> control_output;
+
+    void add_port ( const Port &p )
+        {
+            if ( p.type() == Port::AUDIO && p.direction() == Port::INPUT )
+                audio_input.push_back( p );
+            else if ( p.type() == Port::AUDIO && p.direction() == Port::OUTPUT )
+                audio_output.push_back( p );
+            else if ( p.type() == Port::CONTROL && p.direction() == Port::INPUT )
+                control_input.push_back( p );
+            else if ( p.type() == Port::CONTROL && p.direction() == Port::OUTPUT )
+                control_output.push_back( p );
+        }
+
+    int noutputs ( void ) const
+        {
+            return audio_output.size();
+        }
+
+    int ninputs ( void ) const
+        {
+            return audio_input.size();
+        }
+
+    int ncontrol_inputs ( void ) const
+        {
+            return control_input.size();
+        }
+
+    int ncontrol_outputs ( void ) const
+        {
+            return control_output.size();
+        }
+
+
+    Chain *chain ( void ) const { return _chain; }
+    void chain ( Chain * v ) { _chain = v; }
+
+    virtual bool initialize ( void ) { return true; }
+
+    /* for the given number of inputs, return how many outputs this
+     * plugin would have. -1 if this plugin can't support so many
+     * inputs. */
+    virtual int can_support_inputs ( int n ) = 0;
+    /* called by the chain whenever we need to adjust our input
+     * channel configuration, but only if can_support_inputs() returns
+     * true */
+    virtual bool configure_inputs ( int n ) = 0;
+
+    virtual void process ( void ) { }
+
+    /* called whenever the value of a control port is changed.
+       This can be used to take appropriate action from the GUI thread */
+    virtual void handle_control_changed ( Port * ) { }
+
+    /* called whenever the name of the chain changes (usually because
+     * the name of the mixer strip changed). */
+    virtual void handle_chain_name_changed () {}
+
+protected:
+
+    void draw_connections ( void );
+    void draw_label ( void );
+    void draw_box ( void );
+
+    virtual void draw ( void ) { Module::draw_box(); Module::draw_label(); }
+    virtual int handle ( int m );
+
+};

Mixer/Module_Parameter_Editor.C

@@ -0,0 +1,293 @@
+
+/*******************************************************************************/
+/* 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 <FL/fl_draw.H>
+#include <FL/Fl_Pack.H>
+#include <FL/Fl_Value_Slider.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Counter.H>
+#include "FL/Fl_Arc_Dial.H"
+#include "FL/Boxtypes.H"
+#include "FL/Fl_Flowpack.H"
+#include "FL/Fl_Labelpad_Group.H"
+#include "FL/Fl_Choice.H"
+#include "Module.H"
+#include "Module_Parameter_Editor.H"
+#include "Controller_Module.H"
+#include "Chain.H"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <util/debug.h>
+
+
+
+
+Module_Parameter_Editor::Module_Parameter_Editor ( Module *module ) : Fl_Double_Window( 0, 0, 800, 600 )
+{
+    _module = module;
+    _resized = false;
+
+    char lab[256];
+    if ( strcmp( module->name(), module->label() ) )
+    {
+        snprintf( lab, sizeof( lab ), "%s : %s", module->name(), module->label() );
+    }
+    else
+        strcpy( lab, module->label() );
+
+
+    char title[512];
+    snprintf( title, sizeof( title ), "%s - %s - %s", "Mixer", module->chain()->name(), lab );
+
+    label( title );
+
+    { Fl_Pack *o = main_pack = new Fl_Pack( 0, y(), w(), h() - 10 );
+        o->type( FL_VERTICAL );
+        o->label( strdup( lab ) );
+                o->labeltype( FL_SHADOW_LABEL );
+                o->labelsize( 18 );
+                o->align( (Fl_Align)(FL_ALIGN_TOP | FL_ALIGN_RIGHT | FL_ALIGN_INSIDE ) );
+
+        { Fl_Pack *o = new Fl_Pack( 0, 0, 50, 25 );
+            o->type( FL_HORIZONTAL );
+            o->spacing( 20 );
+            { Fl_Choice *o = mode_choice = new Fl_Choice( 0, 0, 200, 25 );
+                o->add( "Knobs" );
+                o->add( "Horizontal Sliders" );
+                o->add( "Vertical Sliders" );
+                o->value( 0 );
+                o->when( FL_WHEN_CHANGED );
+                o->callback( cb_mode_handle, this );
+            }
+/*             { Fl_Box *o = new Fl_Box( 0, 0, 300, 25 ); */
+/*                 o->box( FL_ROUNDED_BOX ); */
+/*                 o->color( FL_YELLOW ); */
+/*                 o->label( strdup( lab ) ); */
+/*                 o->labeltype( FL_SHADOW_LABEL ); */
+/*                 o->labelsize( 18 ); */
+/*                 o->align( (Fl_Align)(FL_ALIGN_TOP | FL_ALIGN_RIGHT | FL_ALIGN_INSIDE ) ); */
+/* //                Fl_Group::current()->resizable( o ); */
+/*             } */
+            o->end();
+        }
+        { Fl_Group *o = new Fl_Group( 0, 0, w(), h() );
+            { Fl_Flowpack *o = control_pack = new Fl_Flowpack( 50, 0, w() - 100, h() );
+/*                 o->box( FL_ROUNDED_BOX ); */
+/*                 o->color( FL_GRAY ); */
+                o->vspacing( 10 );
+                o->hspacing( 10 );
+                o->end();
+            }
+            o->resizable( 0 );
+            o->end();
+        }
+        o->end();
+    }
+
+    end();
+
+//    draw();
+
+    make_controls();
+}
+
+Module_Parameter_Editor::~Module_Parameter_Editor ( )
+{
+
+
+}
+
+
+
+void
+Module_Parameter_Editor::make_controls ( void )
+{
+    Module *module = _module;
+
+    control_pack->clear();
+
+    for ( unsigned int i = 0; i < module->control_input.size(); ++i )
+    {
+        Fl_Widget *w;
+
+        Module::Port *p = &module->control_input[i];
+
+        if ( p->hints.type == Module::Port::Hints::BOOLEAN )
+        {
+            Fl_Button *o = new Fl_Button( 0, 0, 30, 30, p->name() );
+            w = o;
+            o->selection_color( FL_GREEN );
+            o->type( FL_TOGGLE_BUTTON );
+            o->value( p->control_value() );
+
+        }
+        else if ( p->hints.type == Module::Port::Hints::INTEGER )
+        {
+
+            Fl_Counter *o = new Fl_Counter(0, 0, 58, 24, p->name() );
+            w = o;
+
+            o->type(1);
+            o->step(1);
+
+            if ( p->hints.ranged )
+            {
+                o->minimum( p->hints.minimum );
+                o->maximum( p->hints.maximum );
+            }
+
+            o->value( p->control_value() );
+
+        }
+        else
+        {
+            if ( mode_choice->value() == 0 )
+            {
+                Fl_Arc_Dial *o = new Fl_Arc_Dial( 0, 0, 50, 50, p->name() );
+                w = o;
+                if ( p->hints.ranged )
+                {
+                    o->minimum( p->hints.minimum );
+                    o->maximum( p->hints.maximum );
+                }
+
+                o->box( FL_BURNISHED_OVAL_BOX );
+                o->color( fl_darker( fl_darker( FL_GRAY ) ) );
+                o->selection_color( FL_WHITE );
+                o->value( p->control_value() );
+
+            }
+            else
+            {
+                Fl_Value_Slider *o = new Fl_Value_Slider( 0, 0, 120, 24, p->name() );
+                w = o;
+                if ( p->hints.ranged )
+                {
+                    o->minimum( p->hints.minimum );
+                    o->maximum( p->hints.maximum );
+                }
+
+                if ( mode_choice->value() == 1 )
+                {
+                    o->type( FL_HORIZONTAL );
+                    o->size( 120, 24 );
+                }
+                else
+                {
+                    o->type( FL_VERTICAL );
+                    o->size( 24, 120 );
+                }
+
+                o->slider( FL_THIN_UP_BOX );
+                o->color( fl_darker( fl_darker( FL_GRAY ) ) );
+                o->selection_color( FL_WHITE );
+                o->value( p->control_value() );
+            }
+
+        }
+
+        Fl_Button *bound;
+
+        w->align(FL_ALIGN_TOP);
+        w->labelsize( 10 );
+        w->callback( cb_value_handle, new callback_data( this, i ) );
+
+        { Fl_Group *o = new Fl_Group( 0, 0, 50, 75 );
+            {
+                Fl_Labelpad_Group *flg = new Fl_Labelpad_Group( w );
+
+                { Fl_Button *o = bound = new Fl_Button( 0, 50, 14, 14 );
+                    o->selection_color( FL_YELLOW );
+                    o->type( 0 );
+                    o->labelsize( 8 );
+
+                    o->value( p->connected() );
+
+                    o->callback( cb_bound_handle, new callback_data( this, i ) );
+                }
+
+                o->resizable( 0 );
+                o->end();
+
+                flg->position( o->x(), o->y() );
+                bound->position( o->x(), flg->y() + flg->h() );
+                o->size( flg->w(), flg->h() + bound->h() );
+                o->init_sizes();
+            }
+            control_pack->add( o );
+        }
+
+    }
+
+    main_pack->size( control_pack->max_width() + 100, control_pack->h() + 50 );
+    size( control_pack->max_width() + 100, control_pack->h() + 50 );
+}
+
+void
+Module_Parameter_Editor::cb_value_handle ( Fl_Widget *w, void *v )
+{
+    callback_data *cd = (callback_data*)v;
+
+    cd->base_widget->set_value( cd->port_number, ((Fl_Valuator*)w)->value() );
+}
+
+void
+Module_Parameter_Editor::cb_mode_handle ( Fl_Widget *w, void *v )
+{
+    ((Module_Parameter_Editor*)v)->make_controls();
+}
+
+void
+Module_Parameter_Editor::cb_bound_handle ( Fl_Widget *w, void *v )
+{
+    callback_data *cd = (callback_data*)v;
+
+    Fl_Button *fv = (Fl_Button*)w;
+
+    fv->value( 1 );
+
+    cd->base_widget->bind_control( cd->port_number );
+}
+
+void
+Module_Parameter_Editor::bind_control ( int i )
+{
+    Module::Port *p = &_module->control_input[i];
+
+    if ( p->connected() )
+        /* can only bind once */
+        return;
+
+    Controller_Module *o = new Controller_Module( 50, 50, p->name() );
+    o->chain( _module->chain() );
+
+    o->connect_to( p );
+
+    _module->chain()->add_control( o );
+    _module->redraw();
+}
+
+
+void
+Module_Parameter_Editor::set_value (int i, float value )
+{
+    _module->control_input[i].control_value( value );
+    _module->handle_control_changed( &_module->control_input[i] );
+}

Mixer/Module_Parameter_Editor.H

@@ -0,0 +1,62 @@
+
+/*******************************************************************************/
+/* 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 <FL/Fl_Double_Window.H>
+class Fl_Pack;
+class Fl_Flowpack;
+class Fl_Choice;
+class Module;
+
+class Module_Parameter_Editor : public Fl_Double_Window
+{
+    Module *_module;
+
+    struct callback_data
+    {
+        Module_Parameter_Editor *base_widget;
+        int port_number;
+
+        callback_data ( Module_Parameter_Editor *base_widget, int port_number )
+            {
+                this->base_widget = base_widget;
+                this->port_number = port_number;
+            }
+    };
+
+    static void cb_value_handle ( Fl_Widget *w, void *v );
+    static void cb_mode_handle ( Fl_Widget *w, void *v );
+    static void cb_bound_handle ( Fl_Widget *w, void *v );
+    void set_value (int i, float value );
+    void bind_control ( int i );
+    void make_controls ( void );
+
+    Fl_Pack *main_pack;
+    Fl_Flowpack *control_pack;
+    Fl_Choice *mode_choice;
+    bool _resized;
+
+
+
+public:
+
+    Module_Parameter_Editor ( Module *module );
+    virtual ~Module_Parameter_Editor ( );
+};

Mixer/Panner.C

@@ -0,0 +1,283 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 "Panner.H"
+
+#include <stdio.h>
+#include <math.h>
+
+/* 2D Panner widget. Supports various multichannel configurations. */
+
+
+/* multichannel layouts, in degrees */
+int Panner::_configs[][12] =
+{
+    /* none, error condition? */
+    { NONE },
+    /* mono, panner disabled */
+    { NONE },
+    /* stereo */
+    { L, R },
+    /* stereo + mono */
+    { L, R, C },
+    /* quad */
+    { FL, FR, RL, RR },
+    /* 5.1 */
+    { FL, FR, RL, RR, C },
+    /* no such config */
+    { NONE },
+    /* 7.1 */
+    { FL, FR, RL, RR, C, L, R },
+};
+
+
+/* speaker symbol */
+#define BP fl_begin_polygon()
+#define EP fl_end_polygon()
+#define BCP fl_begin_complex_polygon()
+#define ECP fl_end_complex_polygon()
+#define BL fl_begin_line()
+#define EL fl_end_line()
+#define BC fl_begin_loop()
+#define EC fl_end_loop()
+#define vv(x,y) fl_vertex(x,y)
+
+static void draw_speaker ( Fl_Color col )
+{
+    fl_color(col);
+
+    BP; vv(0.2,0.4); vv(0.6,0.4); vv(0.6,-0.4); vv(0.2,-0.4); EP;
+    BP; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EP;
+
+    fl_color( fl_darker( col ) );
+
+    BC; vv(0.2,0.4); vv(0.6,0.4); vv(0.6,-0.4); vv(0.2,-0.4); EC;
+    BC; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EC;
+}
+
+
+/** set X, Y, W, and H to the bounding box of point /p/ in screen coords */
+void
+Panner::point_bbox ( const Point *p, int *X, int *Y, int *W, int *H ) const
+{
+    int tx, ty, tw, th;
+
+    bbox( tx, ty, tw, th );
+
+    tw -= pw();
+    th -= ph();
+
+    float px, py;
+
+    p->axes( &px, &py );
+
+    *X = tx + ((tw / 2) * px + (tw / 2));
+    *Y = ty + ((th / 2) * py + (th / 2));
+
+    *W = pw();
+    *H = ph();
+}
+
+Panner::Point *
+Panner::event_point ( void )
+{
+    for ( int i = _ins; i--; )
+    {
+        int px, py, pw, ph;
+
+        Point *p = &_points[ i ];
+
+        point_bbox( p, &px, &py, &pw, &ph );
+
+//        printf( "%d, %d -- %d %d %d %d\n", Fl::event_x(), Fl::event_y(),  px, py, pw, ph );
+
+        if ( Fl::event_inside( px, py, pw, ph ) )
+            return p;
+    }
+
+    return NULL;
+}
+
+void
+Panner::draw ( void )
+{
+    draw_box();
+//    draw_box( FL_FLAT_BOX, x(), y(), w(), h(), FL_BLACK );
+    draw_label();
+
+
+    if ( _bypassed )
+    {
+        fl_color( 0 );
+        fl_font( FL_HELVETICA, 12 );
+        fl_draw( "(bypass)", x(), y(), w(), h(), FL_ALIGN_CENTER );
+        return;
+    }
+
+    int tw, th, tx, ty;
+
+    bbox( tx, ty, tw, th );
+
+    fl_push_clip( tx, ty, tw, th );
+
+    fl_color( FL_WHITE );
+
+    const int b = 10;
+
+    tx += b;
+    ty += b;
+    tw -= b * 2;
+    th -= b * 2;
+
+    fl_arc( tx, ty, tw, th, 0, 360 );
+
+    if ( _configs[ _outs ][0] >= 0 )
+    {
+        for ( int i = _outs; i--; )
+        {
+            int a = _configs[ _outs ][ i ];
+
+            Point p( 1.2f, (float)a );
+
+            float px, py;
+
+            p.axes( &px, &py );
+
+            fl_push_matrix();
+
+            const int bx = tx + ((tw / 2) * px + (tw / 2));
+            const int by = ty + ((th / 2) * py + (th / 2));
+
+            fl_translate( bx, by );
+
+            fl_scale( 5, 5 );
+
+            a = 90 - a;
+
+            fl_rotate( a );
+
+            draw_speaker( FL_WHITE );
+
+            fl_rotate( -a );
+
+            fl_pop_matrix();
+
+        }
+    }
+
+    /* ensure that points are drawn *inside* the circle */
+
+    for ( int i = _ins; i--; )
+    {
+        Point *p = &_points[ i ];
+
+        Fl_Color c = (Fl_Color)(10 + i);
+
+        int px, py, pw, ph;
+        point_bbox( p, &px, &py, &pw, &ph );
+
+        /* draw point */
+        fl_color( c );
+        fl_pie( px, py, pw, ph, 0, 360 );
+
+        /* draw echo */
+        fl_color( c = fl_darker( c ) );
+        fl_arc( px - 5, py - 5, pw + 10, ph + 10, 0, 360 );
+        fl_color( c = fl_darker( c ) );
+        fl_arc( px - 10, py - 10, pw + 20, ph + 20, 0, 360 );
+        fl_color( c = fl_darker( c ) );
+        fl_arc( px - 30, py - 30, pw + 60, ph + 60, 0, 360 );
+
+        /* draw number */
+        char pat[4];
+        snprintf( pat, 4, "%d", i + 1 );
+
+        fl_color( FL_BLACK );
+        fl_font( FL_HELVETICA, ph + 2 );
+        fl_draw( pat, px + 1, py + 1, pw - 1, ph - 1, FL_ALIGN_CENTER );
+
+        /* draw line */
+
+/*         fl_color( FL_WHITE ); */
+/*         fl_line( bx + pw() / 2, by + ph() / 2, tx + (tw / 2), ty + (th / 2) ); */
+
+    }
+
+    fl_pop_clip();
+}
+
+/* return the current gain setting for the path in/out  */
+Panner::Point
+Panner::point( int i )
+{
+    return _points[ i ];
+}
+
+int
+Panner::handle ( int m )
+{
+    static Point *drag;
+
+    int r = Fl_Widget::handle( m );
+
+    switch ( m )
+    {
+
+        case FL_PUSH:
+
+            if ( Fl::event_button2() )
+            {
+                _bypassed = ! _bypassed;
+                redraw();
+                return 0;
+            }
+            else if ( Fl::event_button1() && ( drag = event_point() ) )
+                return 1;
+            else
+                return 0;
+        case FL_RELEASE:
+            drag = NULL;
+            return 1;
+        case FL_DRAG:
+        {
+            float X = Fl::event_x() - x();
+            float Y = Fl::event_y() - y();
+
+            int tx, ty, tw, th;
+            bbox( tx, ty, tw, th );
+
+/*             if ( _outs < 3 ) */
+/*                 drag->angle( (float)(X / (tw / 2)) - 1.0f, 0.0f ); */
+/*             else */
+                drag->angle( (float)(X / (tw / 2)) - 1.0f, (float)(Y / (th / 2)) - 1.0f );
+
+
+            printf( "%f %f\n", drag->a, drag->d );
+
+            redraw();
+
+            return 1;
+        }
+
+    }
+
+    return r;
+
+//    return 0;
+}

Mixer/Panner.H

@@ -0,0 +1,172 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 <FL/Fl_Widget.H>
+#include <FL/fl_draw.H>
+#include <FL/Fl.H>
+
+#include <math.h>
+
+#include <vector>
+using namespace std;
+
+class Panner : public Fl_Widget
+{
+
+    struct Point
+    {
+        /* axes */
+
+        /* distance from center (from 0 to 1) */
+        float d;
+        /* angle */
+        float a;
+
+        Point ( ) : d( 0.0f ), a( 0.0f ) { }
+        Point ( float D, float A ) : d( D ), a( A ) { }
+
+        /** translate angle /a/ into x/y coords and place the result in /X/ and /Y/ */
+        void
+        axes ( float *X, float *Y ) const
+            {
+                /* rotate */
+                float A = ( 270 - a ) * ( M_PI / 180 );
+
+                *X = -d * cosf( A );
+                *Y = d * sinf( A );
+            }
+
+        void
+        angle ( float X1, float Y1 )
+            {
+
+                float X2, Y2;
+
+                Y2 = X2 = 0;
+
+                float t;
+
+                t = atan2( X2 - X1, Y2 - Y1 );
+
+                a = t * (180 / M_PI);
+
+                if ( a < 0 )
+                    a = 360 + a;
+
+                a = 360 - a;
+
+                /* standard distance calculation */
+                d = sqrt( pow( X2 - X1, 2 ) + pow( Y2 - Y1, 2 ) );
+
+                if ( d > 1.0f )
+                    d = 1.0f;
+            }
+
+        /** return the distance between the point and that referenced by /p/ */
+        float
+        distance ( const Point &p )
+            {
+                /* first, transform point coords */
+
+                float x1, y1, x2, y2;
+
+                axes( &x1, &y1 );
+                p.axes( &x2, &y2 );
+
+                /* standard distance calculation */
+                return sqrt( pow( x1 - x2, 2 ) + pow( y1 - y2, 2 ) );
+            }
+
+    };
+
+
+    /* channel configuration */
+    int _ins,
+        _outs;
+
+    bool _bypassed;
+
+    vector <Point> _points;
+
+    static int pw ( void ) { return 12; }
+    static int ph ( void ) { return 12; }
+
+    static int _configs[][12];
+
+    void bbox ( int &X, int &Y, int &W, int &H ) const
+        {
+            W = w() - Fl::box_dw( box() );
+            H = h() - Fl::box_dh( box() );
+            X = x() + Fl::box_dx( box() );
+            Y = y() + Fl::box_dy( box() );
+        }
+
+    void point_bbox ( const Point *p, int *X, int *Y, int *W, int *H ) const;
+
+    Point * event_point ( void );
+    Point angle_to_axes ( float a );
+
+    enum {
+        NONE = -1,
+        R    = 90,
+        L    = 270,
+        C   = 0,
+        FL   = 315,
+        FR   = 45,
+        RL   = 225,
+        RR   = 135,
+    };
+
+
+protected:
+
+    virtual void draw ( void );
+    virtual int handle ( int );
+
+public:
+
+
+    Panner ( int X, int Y, int W, int H, const char *L = 0 ) :
+        Fl_Widget( X, Y, W, H, L )
+        {
+            _bypassed = false;
+
+            _ins = 1;
+
+            _outs = 1;
+
+//            _ins = _outs = 4;
+
+//            _points.push_back( Point( 1, FL ) );
+            _points.push_back( Point( 1, C ) );
+
+/*             _points.push_back( Point( 1, FR ) ); */
+/*             _points.push_back( Point( 1, RL ) ); */
+/*             _points.push_back( Point( 1, RR ) ); */
+
+
+        }
+
+    virtual ~Panner ( ) { }
+
+    Panner::Point point ( int i );
+
+};

Mixer/Plugin_Module.C

@@ -0,0 +1,577 @@
+
+/*******************************************************************************/
+/* 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.  */
+/*******************************************************************************/
+
+/* Filter module. Can host LADPSA Plugins, or can be inherited from to make internal
+   modules with special features and appearance. */
+
+#include "Plugin_Module.H"
+
+#include <Fl/fl_draw.H>
+#include <FL/Fl_Group.H>
+
+#include "util/debug.h"
+
+#include <string.h>
+
+#define HAVE_LIBLRDF 1
+#include "LADSPAInfo.h"
+#include <vector>
+#include <string>
+#include <ladspa.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include "Engine/Engine.H"
+
+
+
+static LADSPAInfo *ladspainfo;
+
+/* keep this out of the header to avoid spreading ladspa.h dependency */
+struct Plugin_Module::ImplementationData
+{
+    const LADSPA_Descriptor     *descriptor;
+//    std::vector<LADSPA_Data*>    m_LADSPABufVec;
+    LADSPA_Handle               handle;
+};
+
+
+
+
+Plugin_Module::Plugin_Module ( int , int , const char *L ) : Module( 50, 50, L )
+{
+    init();
+
+    end();
+}
+
+Plugin_Module::~Plugin_Module ( )
+{
+
+}
+
+
+
+
+/* void */
+/* Plugin_Module::detect_plugins ( void ) */
+/* { */
+/*     LADPSAInfo *li = new LADSPAInfo(); */
+/* } */
+
+#include <FL/Fl_Menu_Button.H>
+
+/* allow the user to pick a plugin */
+Plugin_Module *
+Plugin_Module::pick_plugin ( void )
+{
+
+    /**************/
+    /* build menu */
+    /**************/
+
+    Fl_Menu_Button *menu = new Fl_Menu_Button( 0, 0, 400, 400 );
+    menu->type( Fl_Menu_Button::POPUP3 );
+
+    Plugin_Module::Plugin_Info *pia = Plugin_Module::discover();
+
+    for ( Plugin_Module::Plugin_Info *pi = pia; pi->path; ++pi )
+    {
+        menu->add(pi->path, 0, NULL, pi, 0 );
+    }
+
+    menu->popup();
+
+    if ( menu->value() <= 0 )
+        return NULL;
+
+    /************************/
+    /* load selected plugin */
+    /************************/
+
+    Plugin_Module::Plugin_Info *pi = (Plugin_Module::Plugin_Info*)menu->menu()[ menu->value() ].user_data();
+
+    Plugin_Module *m = new Plugin_Module( 50, 50 );
+
+//    Plugin_Module *plugin = new Plugin_Module();
+
+    m->load( pi );
+
+    const char *plugin_name = pi->path;
+
+    char *label = strdup( rindex(plugin_name, '/') + 1 );
+
+    m->label( label );
+
+    delete[] pia;
+
+    return m;
+}
+
+
+void
+Plugin_Module::init ( void )
+{
+    _idata = new Plugin_Module::ImplementationData();
+    _active = false;
+    _crosswire = true;
+
+    _instances = 1;
+//    box( FL_ROUNDED_BOX );
+//    box( FL_NO_BOX );
+    align( (Fl_Align)FL_ALIGN_CENTER | FL_ALIGN_INSIDE );
+    color( (Fl_Color)fl_color_average( FL_BLUE, FL_GREEN, 0.5f ) );
+    int tw, th, tx, ty;
+
+    bbox( tx, ty, tw, th );
+}
+
+#include "FL/test_press.H"
+
+int
+Plugin_Module::handle ( int m )
+{
+    switch ( m )
+    {
+        case FL_ENTER:
+        case FL_LEAVE:
+            redraw();
+            return 1;
+            break;
+        default:
+            return Module::handle( m );
+    }
+
+    return 0;
+}
+
+/* There are two possible adaptations that can be made at Plugin_Module input to account for a mismatch
+   between channel configurations.
+
+   The two scenarios are as follows.
+
+   1. The preceding module has fewer outputs than this module has inputs. If
+   the preceding module has 1 output (MONO) then it will be duplicated
+   for this module's addition inputs. If the preceding module has more
+   than one output, then the chain is in error.
+
+   2. The preceding module has more outputs than this module has inputs
+   If this module has 1 output (MONO) then it will create the required number of
+   instances of its plugin.
+
+
+   Stereo plugins are never run with more than one instance.  Mono
+   plugins will have their outputs brought up to stereo for plugins with
+   stereo input.
+
+*/
+
+int
+Plugin_Module::can_support_inputs ( int n )
+{
+    /* this is the simple case */
+    if ( plugin_ins() == n )
+        return plugin_outs();
+    /* e.g. MONO going into STEREO */
+    /* we'll duplicate our inputs */
+    else if ( n < plugin_ins() &&
+              1 == n  )
+    {
+        return plugin_outs();
+    }
+    /* e.g. STEREO going into MONO */
+    /* we'll run multiple instances of the plugin */
+    else if ( n > plugin_ins() &&
+              plugin_ins() == 1 && plugin_outs() == 1 )
+    {
+        return plugin_outs() * n;
+//            instances( i );
+    }
+
+    return -1;
+}
+
+bool
+Plugin_Module::configure_inputs( int n )
+{
+    if ( 1 == n && plugin_ins() > 1 )
+    {
+        _crosswire = true;
+        audio_input.clear();
+        audio_input.push_back( Port( this, Port::INPUT, Port::AUDIO ) );
+    }
+
+/*     audio_input.clear(); */
+/*     audio_output.clear(); */
+
+/*     for ( int i = 0; i < n; ++i ) */
+/*     { */
+/*         add_port( Port(  Port::INPUT, Port::AUDIO  ) ); */
+/*     } */
+
+/*     if ( n > plugin_ins() ) */
+/*     { */
+/*         /\* multiple instances *\/ */
+/*         instances( n / plugin_ins() ); */
+/*     } */
+/*     else if ( n < plugin_ins() ) */
+/*     { */
+/*         /\* duplication of input *\/ */
+
+
+/*     } */
+
+/*     for ( int i = 0; i < plugin_outs() * instances(); ++i ) */
+/*     { */
+/*         add_port( Port( this, Port::OUTPUT, Port::AUDIO ) ); */
+/*     } */
+
+    if ( ! _active )
+        activate();
+/* //    _plugin->deactivate(); */
+/* /\*     if ( _plugin->active() ) *\/ */
+/* /\*         _plugin->activate(); *\/ */
+
+    /* FIXME: do controls */
+
+    return true;
+}
+
+/* return a list of available plugins */
+Plugin_Module::Plugin_Info *
+Plugin_Module::discover ( void )
+{
+    if ( !ladspainfo )
+        ladspainfo = new LADSPAInfo();
+
+    std::vector<LADSPAInfo::PluginEntry> plugins = ladspainfo->GetMenuList();
+
+    Plugin_Info* pi = new Plugin_Info[plugins.size() + 1];
+
+    int j = 0;
+    for (std::vector<LADSPAInfo::PluginEntry>::iterator i=plugins.begin();
+         i!=plugins.end(); i++, j++)
+    {
+        pi[j].path = i->Name.c_str();
+        pi[j].id = i->UniqueID;
+    }
+
+    return pi;
+}
+
+bool
+Plugin_Module::load ( Plugin_Module::Plugin_Info *pi )
+{
+    _idata->descriptor = ladspainfo->GetDescriptorByID( pi->id );
+
+    _plugin_ins = _plugin_outs = 0;
+
+    if ( _idata->descriptor )
+    {
+        if ( LADSPA_IS_INPLACE_BROKEN( _idata->descriptor->Properties ) )
+        {
+            WARNING( "Cannot use this plugin because it is incapable of processing audio in-place" );
+            return false;
+        }
+        else if ( ! LADSPA_IS_HARD_RT_CAPABLE( _idata->descriptor->Properties ) )
+        {
+            WARNING( "Cannot use this plugin because it is incapable of hard real-time operation" );
+            return false;
+        }
+
+        /* FIXME: bogus rate */
+        if ( ! (_idata->handle = _idata->descriptor->instantiate( _idata->descriptor, engine->sample_rate() ) ) )
+        {
+            WARNING( "Failed to load plugin" );
+            return false;
+        }
+//        _idata->descriptor->activate( _idata->handle );
+
+        MESSAGE( "Name: %s", _idata->descriptor->Name );
+
+        for ( unsigned int i = 0; i < _idata->descriptor->PortCount; ++i )
+        {
+            if ( LADSPA_IS_PORT_AUDIO( _idata->descriptor->PortDescriptors[i] ) )
+            {
+                if ( LADSPA_IS_PORT_INPUT( _idata->descriptor->PortDescriptors[i] ) )
+                {
+                    add_port( Port( this, Port::INPUT, Port::AUDIO, _idata->descriptor->PortNames[ i ] ) );
+                    _plugin_ins++;
+                }
+                else if (LADSPA_IS_PORT_OUTPUT(_idata->descriptor->PortDescriptors[i]))
+                {
+                    _plugin_outs++;
+                    add_port( Port( this, Port::OUTPUT, Port::AUDIO, _idata->descriptor->PortNames[ i ] ) );
+                }
+            }
+        }
+
+        MESSAGE( "Plugin has %i inputs and %i outputs", _plugin_ins, _plugin_outs);
+
+        for ( unsigned int i = 0; i < _idata->descriptor->PortCount; ++i )
+        {
+            if ( LADSPA_IS_PORT_CONTROL( _idata->descriptor->PortDescriptors[i] ) )
+            {
+                Port::Direction d;
+
+                if ( LADSPA_IS_PORT_INPUT( _idata->descriptor->PortDescriptors[i] ) )
+                {
+                    d = Port::INPUT;
+                }
+                else if ( LADSPA_IS_PORT_OUTPUT( _idata->descriptor->PortDescriptors[i] ) )
+                {
+                    d = Port::OUTPUT;
+                }
+
+                Port p( this, d, Port::CONTROL, _idata->descriptor->PortNames[ i ] );
+
+
+                LADSPA_PortRangeHintDescriptor hd = _idata->descriptor->PortRangeHints[i].HintDescriptor;
+
+                if ( LADSPA_IS_HINT_BOUNDED_BELOW(hd) )
+                {
+                    p.hints.ranged = true;
+                    p.hints.minimum = _idata->descriptor->PortRangeHints[i].LowerBound;
+                }
+                if ( LADSPA_IS_HINT_BOUNDED_ABOVE(hd) )
+                {
+                    p.hints.ranged = true;
+                    p.hints.maximum = _idata->descriptor->PortRangeHints[i].UpperBound;
+                }
+
+                if ( LADSPA_IS_HINT_HAS_DEFAULT(hd) )
+                {
+
+                    float Max=1.0f, Min=-1.0f, Default=0.0f;
+                    int Port=i;
+
+                    // Get the bounding hints for the port
+                    LADSPA_PortRangeHintDescriptor HintDesc=_idata->descriptor->PortRangeHints[Port].HintDescriptor;
+                    if (LADSPA_IS_HINT_BOUNDED_BELOW(HintDesc))
+                    {
+                        Min=_idata->descriptor->PortRangeHints[Port].LowerBound;
+                        if (LADSPA_IS_HINT_SAMPLE_RATE(HintDesc))
+                        {
+                            Min*=engine->sample_rate();
+                        }
+                    }
+                    if (LADSPA_IS_HINT_BOUNDED_ABOVE(HintDesc))
+                    {
+                        Max=_idata->descriptor->PortRangeHints[Port].UpperBound;
+                        if (LADSPA_IS_HINT_SAMPLE_RATE(HintDesc))
+                        {
+                            Max*=engine->sample_rate();
+                        }
+                    }
+
+#ifdef LADSPA_VERSION
+// We've got a version of the header that supports port defaults
+                    if (LADSPA_IS_HINT_HAS_DEFAULT(HintDesc)) {
+                        // LADSPA_HINT_DEFAULT_0 is assumed anyway, so we don't check for it
+                        if (LADSPA_IS_HINT_DEFAULT_1(HintDesc)) {
+                            Default = 1.0f;
+                        } else if (LADSPA_IS_HINT_DEFAULT_100(HintDesc)) {
+                            Default = 100.0f;
+                        } else if (LADSPA_IS_HINT_DEFAULT_440(HintDesc)) {
+                            Default = 440.0f;
+                        } else {
+                            // These hints may be affected by SAMPLERATE, LOGARITHMIC and INTEGER
+                            if (LADSPA_IS_HINT_DEFAULT_MINIMUM(HintDesc) &&
+                                LADSPA_IS_HINT_BOUNDED_BELOW(HintDesc)) {
+                                Default=_idata->descriptor->PortRangeHints[Port].LowerBound;
+                            } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(HintDesc) &&
+                                       LADSPA_IS_HINT_BOUNDED_ABOVE(HintDesc)) {
+                                Default=_idata->descriptor->PortRangeHints[Port].UpperBound;
+                            } else if (LADSPA_IS_HINT_BOUNDED_BELOW(HintDesc) &&
+                                       LADSPA_IS_HINT_BOUNDED_ABOVE(HintDesc)) {
+                                // These hints require both upper and lower bounds
+                                float lp = 0.0f, up = 0.0f;
+                                float min = _idata->descriptor->PortRangeHints[Port].LowerBound;
+                                float max = _idata->descriptor->PortRangeHints[Port].UpperBound;
+                                if (LADSPA_IS_HINT_DEFAULT_LOW(HintDesc)) {
+                                    lp = 0.75f;
+                                    up = 0.25f;
+                                } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(HintDesc)) {
+                                    lp = 0.5f;
+                                    up = 0.5f;
+                                } else if (LADSPA_IS_HINT_DEFAULT_HIGH(HintDesc)) {
+                                    lp = 0.25f;
+                                    up = 0.75f;
+                                }
+
+                                if (LADSPA_IS_HINT_LOGARITHMIC(HintDesc)) {
+
+                                    p.hints.type = Port::Hints::LOGARITHMIC;
+
+                                    if (min==0.0f || max==0.0f) {
+                                        // Zero at either end means zero no matter
+                                        // where hint is at, since:
+                                        //  log(n->0) -> Infinity
+                                        Default = 0.0f;
+                                    } else {
+                                        // Catch negatives
+                                        bool neg_min = min < 0.0f ? true : false;
+                                        bool neg_max = max < 0.0f ? true : false;
+
+                                        if (!neg_min && !neg_max) {
+                                            Default = exp(log(min) * lp + log(max) * up);
+                                        } else if (neg_min && neg_max) {
+                                            Default = -exp(log(-min) * lp + log(-max) * up);
+                                        } else {
+                                            // Logarithmic range has asymptote
+                                            // so just use linear scale
+                                            Default = min * lp + max * up;
+                                        }
+                                    }
+                                } else {
+                                    Default = min * lp + max * up;
+                                }
+                            }
+                            if (LADSPA_IS_HINT_SAMPLE_RATE(HintDesc)) {
+                                Default *= engine->sample_rate();
+                            }
+                            if (LADSPA_IS_HINT_INTEGER(HintDesc)) {
+                                if ( p.hints.ranged &&
+                                     0 == p.hints.minimum &&
+                                     1 == p.hints.maximum )
+                                    p.hints.type = Port::Hints::BOOLEAN;
+                                else
+                                    p.hints.type = Port::Hints::INTEGER;
+                                Default = floorf(Default);
+                            }
+                            if (LADSPA_IS_HINT_TOGGLED(HintDesc)){
+                                p.hints.type = Port::Hints::BOOLEAN;
+                            }
+                        }
+                    }
+#else
+                    Default = 0.0f;
+#endif
+                    p.hints.default_value = Default;
+                }
+
+                float *control_value = new float;
+
+                *control_value = p.hints.default_value;
+
+                p.connect_to( control_value );
+
+                add_port( p );
+
+                _idata->descriptor->connect_port( _idata->handle, i, (LADSPA_Data*)control_input.back().buffer() );
+
+                DMESSAGE( "Plugin has control port \"%s\" (default: %f)", _idata->descriptor->PortNames[ i ], p.hints.default_value );
+            }
+        }
+    }
+    else
+    {
+        WARNING( "Failed to load plugin" );
+        return false;
+    }
+
+
+    return true;
+}
+
+/* const char * */
+/* Plugin_Module::name ( void ) const */
+/* { */
+/*     return _idata->descriptor->Name; */
+/* } */
+
+void
+Plugin_Module::set_input_buffer ( int n, void *buf )
+{
+    for ( unsigned int i = 0; i < _idata->descriptor->PortCount; ++i )
+        if ( LADSPA_IS_PORT_INPUT( _idata->descriptor->PortDescriptors[i] ) &&
+             LADSPA_IS_PORT_AUDIO( _idata->descriptor->PortDescriptors[i] ) )
+            if ( n-- == 0 )
+                _idata->descriptor->connect_port( _idata->handle, i, (LADSPA_Data*)buf );
+}
+
+void
+Plugin_Module::set_output_buffer ( int n, void *buf )
+{
+    for ( unsigned int i = 0; i < _idata->descriptor->PortCount; ++i )
+        if ( LADSPA_IS_PORT_OUTPUT( _idata->descriptor->PortDescriptors[i] ) &&
+             LADSPA_IS_PORT_AUDIO( _idata->descriptor->PortDescriptors[i] ) )
+            if ( n-- == 0 )
+                _idata->descriptor->connect_port( _idata->handle, i, (LADSPA_Data*)buf );
+}
+
+void
+Plugin_Module::set_control_buffer ( int n, void *buf )
+{
+    for ( unsigned int i = 0; i < _idata->descriptor->PortCount; ++i )
+        if ( LADSPA_IS_PORT_INPUT( _idata->descriptor->PortDescriptors[i] ) &&
+             LADSPA_IS_PORT_CONTROL( _idata->descriptor->PortDescriptors[i] ) )
+            if ( n-- == 0 )
+                _idata->descriptor->connect_port( _idata->handle, i, (LADSPA_Data*)buf );
+}
+
+void
+Plugin_Module::activate ( void )
+{
+    if ( _active )
+        FATAL( "Attempt to activate already active plugin" );
+
+    if ( _idata->descriptor->activate )
+        _idata->descriptor->activate( _idata->handle );
+    _active = true;
+}
+
+void
+Plugin_Module::deactivate( void )
+{
+    if ( _idata->descriptor->deactivate )
+        _idata->descriptor->deactivate( _idata->handle );
+    _active = false;
+}
+
+void
+Plugin_Module::process ( )
+{
+    if ( _crosswire )
+    {
+        for ( int i = 0; i < plugin_ins(); ++i )
+        {
+            set_input_buffer( i, audio_input[0].buffer() );
+        }
+    }
+    else
+    {
+        for ( unsigned int i = 0; i < audio_input.size(); ++i )
+        {
+            set_input_buffer( i, audio_input[i].buffer() );
+        }
+    }
+
+    for ( unsigned int i = 0; i < audio_output.size(); ++i )
+    {
+        set_output_buffer( i, audio_output[i].buffer() );
+    }
+
+    if ( _active )
+    {
+        _idata->descriptor->run( _idata->handle, nframes() );
+    }
+}
+
+

Mixer/Plugin_Module.H

@@ -0,0 +1,114 @@
+
+/*******************************************************************************/
+/* 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 Plugin_Module : Module {
+
+    void init ( void );
+
+    int _ins;
+    int _outs;
+    int _instances;
+
+    void bbox ( int &X, int &Y, int &W, int &H )
+        {
+            X = x();
+            Y = y() + 5;
+            W = w();
+            H = h() - 10;
+        }
+
+    void cb_handle(Fl_Widget*);
+    static void cb_handle(Fl_Widget*, void*);
+
+    Fl_Button *close_button;
+
+    struct ImplementationData;
+
+    ImplementationData *_idata;
+
+    bool _active;
+
+
+    int _plugin_ins;
+    int _plugin_outs;
+    bool _crosswire;
+
+    struct Plugin_Info
+    {
+        const char *path;
+        unsigned long id;
+
+        Plugin_Info ( )
+            {
+                path = 0;
+                id = 0;
+            }
+    };
+
+    static Plugin_Info* discover ( void );
+
+    bool load ( Plugin_Info * );
+
+    void set_input_buffer ( int n, void *buf );
+    void set_output_buffer ( int n, void *buf );
+    void set_control_buffer ( int n, void *buf );
+    void activate ( void );
+    void deactivate ( void );
+    void process ( unsigned long nframes );
+    bool active ( void ) const { return _active; }
+
+public:
+
+    Plugin_Module( int W, int H, const char *L = 0 );
+    Plugin_Module ( );
+    virtual ~Plugin_Module();
+
+    static Plugin_Module * pick_plugin ( void );
+
+    int plugin_ins ( void ) const { return _plugin_ins; }
+    int plugin_outs ( void ) const { return _plugin_outs; }
+
+    bool ins ( int i );
+    int ins ( void ) const { return _ins; }
+    int outs ( void ) const { return plugin_outs() * _instances; }
+
+    bool controllable ( void ) const { return false; }
+
+    int instances ( void ) const { return _instances; }
+    void instances ( int i ) { _instances = i; }
+
+    void select_plugin ( unsigned long id );
+
+    const char *name ( void ) const { return "Plugin"; }
+
+    int can_support_inputs ( int );
+    bool configure_inputs ( int );
+
+    void process ( void );
+
+protected:
+
+//    virtual void draw ( void );
+    virtual int handle ( int );
+
+};

Mixer/main.C

@@ -0,0 +1,114 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 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 <FL/Fl.H>
+#include <FL/Fl_Single_Window.H>
+#include <FL/Fl_Single_Window.H>
+#include <FL/Fl_Scroll.H>
+#include <FL/Fl_Pack.H>
+#include "Mixer_Strip.H"
+
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include  "DPM.H"
+
+#include "Mixer.H"
+#include "Engine/Engine.H"
+#include "util/Thread.H"
+#include "util/debug.h"
+
+Engine *engine;
+Mixer *mixer;
+
+Fl_Single_Window *main_window;
+
+#include <FL/Boxtypes.H>
+#include "Loggable.H"
+#include <FL/Fl_Tooltip.H>
+
+int
+main ( int argc, char **argv )
+{
+    Thread::init();
+
+    Thread thread( "UI" );
+    thread.set();
+
+    Fl_Tooltip::color( FL_BLACK );
+    Fl_Tooltip::textcolor( FL_YELLOW );
+    Fl_Tooltip::size( 14 );
+    Fl_Tooltip::hoverdelay( 0.1f );
+
+    Fl::visible_focus( 0 );
+
+    LOG_REGISTER_CREATE( Mixer_Strip );
+
+    init_boxtypes();
+
+    Fl::get_system_colors();
+    Fl::scheme( "plastic" );
+//    Fl::scheme( "gtk+" );
+
+/*     Fl::foreground( 0xFF, 0xFF, 0xFF ); */
+/*     Fl::background( 0x10, 0x10, 0x10 ); */
+
+    MESSAGE( "Initializing JACK" );
+
+    engine = new Engine();
+
+
+    engine->init( "Non-Mixer" );
+
+    Fl_Single_Window *o = main_window = new Fl_Single_Window( 1024, 768, "Mixer" );
+    {
+        Fl_Widget *o = mixer = new Mixer( 0, 0, main_window->w(), main_window->h(), NULL );
+        Fl_Group::current()->resizable(o);
+    }
+    o->end();
+
+    o->show( argc, argv );
+
+    {
+        engine->lock();
+
+        if ( argc > 1 )
+        {
+            char name[1024];
+
+            snprintf( name, sizeof( name ), "%s/history", argv[1] );
+
+            Loggable::open( name );
+        }
+        else
+        {
+            WARNING( "Running without a project--nothing will be saved." );
+        }
+
+        engine->unlock();
+    }
+
+    Fl::run();
+
+    delete engine;
+
+    MESSAGE( "Your fun is over" );
+
+}

Mixer/makefile.inc

@@ -0,0 +1,21 @@
+# -*- mode: makefile; -*-
+
+all: Mixer
+
+Mixer_SRCS := $(wildcard Mixer/*.C Mixer/*.fl Mixer/Engine/*.C)
+Mixer_SRCS += util/debug.C util/Thread.C util/file.C
+
+Mixer_SRCS:=$(Mixer_SRCS:.fl=.C)
+Mixer_SRCS:=$(sort $(Mixer_SRCS))
+Mixer_OBJS:=$(Mixer_SRCS:.C=.o)
+
+Mixer_LIBS := $(FLTK_LIBS) $(JACK_LIBS) $(LASH_LIBS) -llrdf
+
+Mixer/mixer: $(Mixer_OBJS) FL
+	@ echo -n Linking mixer...
+	@ $(CXX) $(CXXFLAGS) $(Mixer_LIBS) $(Mixer_OBJS) -o $@ -LFL -lfl_widgets -Lnonlib -lnonlib && echo $(DONE)
+
+Mixer: Mixer/mixer
+
+Mixer_clean:
+	rm -f $(Mixer_OBJS) Mixer/mixer

configure

@@ -27,5 +27,6 @@ require_command ar ar
 require_command makedepend makedepend
 require_package JACK 0.103.0 jack
 require_package sndfile 1.0.17 sndfile
+require_package lrdf 0.1.0 lrdf
 
 end