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/*******************************************************************************/
/* 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. */
/*******************************************************************************/
/* This is the Timeline widget, which contains all the tracks and
* provides cursor overlays, scrolling, zooming, measure lines, tempo
* map and just about everything else. */
#include <FL/Fl.H>
#include <FL/Fl_Scroll.H>
#include <FL/Fl_Pack.H>
#include <FL/Fl_Scrollbar.H>
#include <FL/Fl_Widget.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Menu_Button.H>
#include <FL/Fl_Panzoomer.H>
#include <FL/Fl_Tile.H>
#include "Timeline.H"
#include "Tempo_Sequence.H"
#include "Time_Sequence.H"
#include "Cursor_Sequence.H"
#include "Audio_Sequence.H"
#include "Control_Sequence.H"
#include "Sequence.H"
#include "Annotation_Sequence.H"
#include "Track.H"
#include "Transport.H"
#include "FL/menu_popup.H"
#include "const.h"
#include "debug.h"
/* these headers are just for the NSM support */
#include "Project.H"
#include "TLE.H"
/* */
#include "OSC_Thread.H"
#include "OSC/Endpoint.H"
#include <unistd.h>
#include <nsm.h>
extern nsm_client_t *nsm;
#define BASE Fl_Group
#define BX this->x()
#define BY this->y()
bool Timeline::draw_with_measure_lines = true;
bool Timeline::draw_with_cursor_overlay = true;
Timeline::snap_e Timeline::snap_to = Bars;
bool Timeline::snapping_on_hold = false;
bool Timeline::snap_magnetic = true;
bool Timeline::follow_playhead = true;
bool Timeline::center_playhead = true;
bool Timeline::playback_latency_compensation = false;
const float UPDATE_FREQ = 1.0f / 18.0f;
extern const char *instance_name;
extern TLE *tle;
/** return the combined height of all visible children of (veritcal)
pack, /p/. This is necessary because pack sizes are adjusted only
when the relevant areas are exposes. */
static int
pack_visible_height ( const Fl_Pack *p )
{
int th = 0;
const Fl_Widget* const *w = p->array();
for ( int i = p->children(); i--; ++w )
if ( (*w)->visible() )
th += (*w)->h() + p->spacing();
return th;
}
#define BP fl_begin_polygon()
#define EP fl_end_polygon()
#define vv(x,y) fl_vertex( x, y )
#define BL fl_begin_line()
#define EL fl_end_line()
void
draw_full_arrow_symbol ( Fl_Color color )
{
/* draw cap */
fl_color( color );
BP;
vv( -1, -1 );
vv( 0, 1 );
vv( 1, -1 );
EP;
/* draw cap outline */
fl_color( FL_BLACK );
BL;
vv( -1, -1 );
vv( 0, 1 );
vv( 1, -1 );
EL;
}
class Timeline::Timeline_Panzoomer : public Fl_Panzoomer
{
public:
Timeline_Panzoomer ( int X,int Y,int W,int H, const char *L=0)
: Fl_Panzoomer(X,Y,W,H)
{
}
protected:
void
draw_background ( int X, int Y,int W, int H )
{
nframes_t ef = timeline->x_to_ts( _xmax );
double ty = Y;
for ( int i = 0; i < timeline->tracks->children(); i++ )
{
Track *t = (Track*)timeline->tracks->child( i );
Sequence *s = t->sequence();
if ( !s )
continue;
fl_color( FL_DARK1 );
const double scale = (double)H / ( pack_visible_height( timeline->tracks ) );
// double th = (double)H / timeline->tracks->children();
const double th = t->h() * scale;
fl_line( X, ty,
X + W, ty );
for ( list <Sequence_Widget *>::const_iterator r = s->_widgets.begin();
r != s->_widgets.end(); ++r )
{
fl_rectf(
X + ( W * ( (double)(*r)->start() / ef ) ),
ty,
W * ( (double)(*r)->length() / ef ),
th,
(*r)->actual_box_color());
}
fl_font( FL_HELVETICA, th );
fl_color( FL_FOREGROUND_COLOR );
fl_draw( t->name(), X, ty, W, th, (Fl_Align)(FL_ALIGN_LEFT | FL_ALIGN_INSIDE ));
ty += th;
}
}
};
void
Timeline::redraw_overlay ( void )
{
((Fl_Overlay_Window*)window())->redraw_overlay();
}
nframes_t
Timeline::range_start ( void ) const
{
if ( edit_cursor_track->active_cursor() )
return edit_cursor_track->active_cursor()->start();
else
return 0;
}
nframes_t
Timeline::range_end ( void ) const
{
if ( edit_cursor_track->active_cursor() )
return edit_cursor_track->active_cursor()->start() + edit_cursor_track->active_cursor()->length();
else
return 0;
}
void
Timeline::range_start ( nframes_t n )
{
if ( ! edit_cursor_track->active_cursor() )
new Cursor_Region( 0, 0, "Edit", NULL );
Logger log( edit_cursor_track->active_cursor() );
edit_cursor_track->active_cursor()->set_left( n );
}
void
Timeline::range_end ( nframes_t n )
{
if ( ! edit_cursor_track->active_cursor() )
new Cursor_Region( 0, 0, "Edit", NULL );
Logger log( edit_cursor_track->active_cursor() );
edit_cursor_track->active_cursor()->set_right( n );
}
/** return first frame of playback (might not be 0) */
nframes_t
Timeline::playback_home ( void ) const
{
if ( play_cursor_track->active_cursor() )
return play_cursor_track->active_cursor()->start();
else
return 0;
}
/** return last frame of playback */
nframes_t
Timeline::playback_end ( void ) const
{
if ( play_cursor_track->active_cursor() )
return play_cursor_track->active_cursor()->start() + play_cursor_track->active_cursor()->length();
else
return length();
}
void
Timeline::reset_range ( void )
{
delete edit_cursor_track->active_cursor();
}
/** callback used by Loggable class to create a snapshot of system
* state. */
void
Timeline::snapshot ( void )
{
tempo_track->log_children();
time_track->log_children();
edit_cursor_track->log_children();
punch_cursor_track->log_children();
play_cursor_track->log_children();
update_track_order();
for ( int i = 0; i < tracks->children(); ++i )
{
((Track*)tracks->child( i ))->log_children();
}
}
/** recalculate the size of horizontal scrolling area and inform scrollbar */
void
Timeline::adjust_panzoomer ( void )
{
panzoomer->y_value( panzoomer->y_value(), h() - rulers->h() - panzoomer->h(), 0, pack_visible_height( tracks ));
panzoomer->x_value( ts_to_x( xoffset ), /* pos */
tracks->w() - Track::width(), /* window size */
0, /* min */
max( ts_to_x( length() ), tracks->w() - Track::width() )/* max */
);
}
void
Timeline::cb_scroll ( Fl_Widget *w, void *v )
{
((Timeline*)v)->cb_scroll( w );
}
void
Timeline::cb_scroll ( Fl_Widget *w )
{
//adjust_panzoomer();
if ( panzoomer->zoom_changed() )
{
nframes_t under_mouse = x_to_offset( Fl::event_x() );
_fpp = panzoomer->zoom();
panzoomer->x_value( ts_to_x( under_mouse ) );
redraw();
}
if ( _old_yposition != panzoomer->y_value() )
{
tracks->position( tracks->x(), track_window->y() - (int)panzoomer->y_value() );
damage( FL_DAMAGE_SCROLL );
}
if ( _old_xposition != x_to_ts( panzoomer->x_value() ))
{
damage( FL_DAMAGE_SCROLL );
xposition( panzoomer->x_value() );
}
}
void
Timeline::menu_cb ( Fl_Widget *w, void *v )
{
((Timeline*)v)->menu_cb( (Fl_Menu_*)w );
}
/** ensure that p1 is less than range_end() */
void
Timeline::fix_range ( void )
{
if ( range_start() > range_end() )
{
nframes_t t = range_end();
range_end( range_start() );
range_start( t );
}
}
/** set the range to /start/ + /length/ */
void
Timeline::range ( nframes_t start, nframes_t length )
{
range_start( start );
range_end( start + length );
redraw();
}
/** create a new take for every armed track */
void
Timeline::add_take_for_armed_tracks ( void )
{
THREAD_ASSERT( UI );
wrlock();
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->armed() && t->sequence()->_widgets.size() )
t->sequence( new Audio_Sequence( t ) );
}
unlock();
}
void
Timeline::menu_cb ( Fl_Menu_ *m )
{
if ( ! active_r() )
return;
const char *picked = m->mvalue()->label();
/* m->item_pathname( picked, sizeof( picked ) ); */
DMESSAGE( "%s", picked );
if ( ! strcmp( picked, "Add audio track" ) )
{
/* FIXME: prompt for I/O config? */
Loggable::block_start();
/* add audio track */
char *name = get_unique_track_name( "Audio" );
Track *t = new Track( name );
free( name );
Audio_Sequence *o = new Audio_Sequence( t );
add_track( t );
t->sequence( o );
t->take_focus();
Loggable::block_end();
}
else if ( ! strcmp( picked, "Tempo from edit (beat)" ) )
{
if ( range_start() != range_end() )
{
fix_range();
beats_per_minute( range_start(), sample_rate() * 60 / (float)( range_end() - range_start() ) );
range_end( range_start() );
}
}
else if ( ! strcmp( picked, "Tempo from edit (bar)" ) )
{
if ( range_start() != range_end() )
{
fix_range();
position_info pi = solve_tempomap( range_start() );
beats_per_minute( range_start(), sample_rate() * 60 / (float)( ( range_end() - range_start() ) / pi.beats_per_bar ) );
range_end( range_start() );
}
}
else if ( ! strcmp( picked, "Playhead to mouse" ) )
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
transport->locate( xoffset + x_to_ts( X ) );
}
}
else if ( ! strcmp( picked, "Edit start to mouse" ) )
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
range_start( xoffset + x_to_ts( X ) );
}
fix_range();
/* FIXME: only needs to damage the location of the old cursor! */
redraw();
}
else if ( ! strcmp( picked, "Edit end to mouse" ) )
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
range_end( xoffset + x_to_ts( X ) );
}
fix_range();
/* FIXME: only needs to damage the location of the old cursor! */
redraw();
}
else if ( ! strcmp( picked, "Playhead left beat" ) )
{
nframes_t f = transport->frame;
if ( prev_line( &f ) )
transport->locate( f );
}
else if ( ! strcmp( picked, "Playhead right beat" ) )
{
nframes_t f = transport->frame;
if ( next_line( &f ) )
transport->locate( f );
}
else if ( ! strcmp( picked, "Playhead left bar" ) )
{
nframes_t f = transport->frame;
if ( prev_line( &f, true ) )
transport->locate( f );
}
else if ( ! strcmp( picked, "Playhead right bar" ) )
{
nframes_t f = transport->frame;
if ( next_line( &f, true ) )
transport->locate( f );
}
else if ( ! strcmp( picked, "Swap edit start and playhead" ) )
{
nframes_t t = transport->frame;
transport->locate( range_start() );
range_start( t );
redraw();
}
else if ( ! strcmp( picked, "Swap edit end and playhead" ) )
{
nframes_t t = transport->frame;
transport->locate( range_end() );
range_end( t );
redraw();
}
else if ( ! strcmp( picked, "Edit start to playhead" ) )
{
range_start( transport->frame );
redraw();
}
else if ( ! strcmp( picked, "Edit end to playhead" ) )
{
range_end( transport->frame );
redraw();
}
else if ( ! strcmp( picked, "Punch from edit" ) )
{
if ( range_start() != range_end() )
{
Loggable::block_start();
new Cursor_Region( range_start(), range_end() - range_start(), "Punch", NULL );
reset_range();
Loggable::block_end();
}
redraw();
}
else if ( ! strcmp( picked, "Playback from edit" ) )
{
if ( range_start() != range_end() )
{
Loggable::block_start();
if ( play_cursor_track->active_cursor() )
{
play_cursor_track->active_cursor()->start( range_start() );
play_cursor_track->active_cursor()->set_right( range_end() );
}
else
{
new Cursor_Region( range_start(), range_end() - range_start(), "Playback", NULL );
}
reset_range();
Loggable::block_end();
}
redraw();
}
else if ( ! strcmp( picked, "Redraw" ) )
{
redraw();
}
else
WARNING( "programming error: Unknown menu item" );
}
int
Timeline::ntracks ( void ) const
{
return tracks->children();
}
Timeline::~Timeline ( )
{
delete osc_thread;
osc_thread = 0;
delete osc;
osc = 0;
}
Timeline::Timeline ( int X, int Y, int W, int H, const char* L ) : BASE( X, Y, W, H, L )
{
Loggable::snapshot_callback( &Timeline::snapshot, this );
edit_cursor_track = NULL;
punch_cursor_track = NULL;
play_cursor_track = NULL;
_created_new_takes = 0;
_punched_in = 0;
_punch_in_frame = 0;
_punch_out_frame = 0;
osc_thread = 0;
_sample_rate = 44100;
box( FL_FLAT_BOX );
xoffset = 0;
_old_yposition = 0;
_old_xposition = 0;
// range_start( range_end( 0 ) );
menu = new Fl_Menu_Button( 0, 0, 0, 0, "Timeline" );
/* menu->add( "Add Track", 0, 0, 0 ); */
int ruler_height = 0;
menu->add( "Add audio track", 'a', 0, 0 );
menu->add( "Tempo from edit (beat)", 't', 0, 0 );
menu->add( "Tempo from edit (bar)", FL_CTRL + 't', 0, 0 );
menu->add( "Playhead to mouse", 'p', 0, 0 );
menu->add( "Edit start to mouse", '[', 0, 0 );
menu->add( "Edit end to mouse", ']', 0, 0 );
menu->add( "Playhead left beat", FL_SHIFT + FL_Left, 0, 0 );
menu->add( "Playhead right beat", FL_SHIFT + FL_Right, 0, 0 );
menu->add( "Playhead left bar", FL_CTRL + FL_SHIFT + FL_Left, 0, 0 );
menu->add( "Playhead right bar", FL_CTRL + FL_SHIFT + FL_Right, 0, 0 );
menu->add( "Swap edit start and playhead", FL_CTRL + FL_SHIFT + '[', 0, 0 );
menu->add( "Swap edit end and playhead", FL_CTRL + FL_SHIFT + ']', 0, 0 );
menu->add( "Edit start to playhead", FL_CTRL + '[', 0, 0 );
menu->add( "Edit end to playhead", FL_CTRL + ']', 0, 0 );
menu->add( "Punch from edit", FL_CTRL + FL_SHIFT + 'p', 0, 0 );
menu->add( "Playback from edit", FL_CTRL + FL_SHIFT + 'l', 0, 0 );
menu->add( "Redraw", FL_CTRL + 'l', 0, 0 );
menu_set_callback( const_cast<Fl_Menu_Item*>(menu->menu()), &Timeline::menu_cb, (void*)this );
{
Fl_Pack *o = new Fl_Pack( X, Y, W, 1, "rulers" );
o->type( Fl_Pack::VERTICAL );
{
Tempo_Sequence *o = new Tempo_Sequence( 0, 0, 800, 18 );
o->color( FL_DARK1 );
/* o->label( "Tempo" ); */
tempo_track = o;
}
{
Time_Sequence *o = new Time_Sequence( 0, 24, 800, 18 );
o->color( FL_DARK2 );
/* o->name( "Time" ); */
time_track = o;
}
{
Cursor_Sequence *o = new Cursor_Sequence( 0, 24, 800, 18 );
o->color( FL_DARK1 );
o->label( "Edit" );
o->cursor_color( FL_YELLOW );
edit_cursor_track = o;
}
{
Cursor_Sequence *o = new Cursor_Sequence( 0, 24, 800, 18 );
o->color( FL_DARK2 );
o->label( "Punch" );
o->cursor_color( FL_RED );
punch_cursor_track = o;
}
{
Cursor_Sequence *o = new Cursor_Sequence( 0, 24, 800, 18 );
o->color( FL_DARK1 );
o->label( "Playback" );
o->cursor_color( FL_GREEN );
play_cursor_track = o;
}
/* { */
/* Annotation_Sequence *o = new Annotation_Sequence( 0, 24, 800, 24 ); */
/* o->color( fl_gray_ramp( 'F' ) ); */
/* o->label( "Ruler" ); */
/* o->align( FL_ALIGN_LEFT ); */
/* ruler_track = o; */
/* } */
rulers = o;
o->end();
ruler_height = o->child( 0 )->h() * o->children();
DMESSAGE( "Ruler height: %i", ruler_height );
o->size( o->w(), ruler_height );
}
{
Fl_Tile *o = new Fl_Tile( X, rulers->y() + ruler_height, W, H - rulers->h() );
o->box(FL_FLAT_BOX);
o->when( FL_WHEN_RELEASE );
{
Fl_Group *o = new Fl_Group( X, rulers->y() + rulers->h(), W, ( H - rulers->h() ) - 50 );
o->box(FL_FLAT_BOX);
{
_fpp = 8;
Fl_Pack *o = new Fl_Pack( X, rulers->y() + rulers->h(), W, 1 );
o->type( Fl_Pack::VERTICAL );
o->spacing( 1 );
tracks = o;
o->end();
/* Fl_Group::current()->resizable( o ); */
}
o->end();
track_window = o;
}
{
Fl_Panzoomer *o = new Timeline_Panzoomer( X,
track_window->y() + track_window->h(),
W,
50 );
o->zoom_range( 1, 20 );
o->zoom( 8 );
o->box( FL_FLAT_BOX );
o->color( FL_DARK1 );
o->type( FL_HORIZONTAL );
o->callback( cb_scroll, this );
panzoomer = o;
}
Fl_Box *spacebox = new Fl_Box( 0,0,1,1 );
o->end();
o->resizable( spacebox );
spacebox->resize( X, rulers->y() + ( ( H - rulers->h() ) - 50 ),
W, 125 );
o->position( panzoomer->x(), panzoomer->y(),
panzoomer->x(), track_window->y() + track_window->h() );
tile = o;
resizable(o);
}
/* rulers go above tracks... */
add( rulers );
/* redraw(); */
end();
Fl::add_timeout( UPDATE_FREQ, update_cb, this );
}
void
Timeline::beats_per_minute ( nframes_t when, float bpm )
{
tempo_track->add( new Tempo_Point( when, bpm ) );
}
void
Timeline::time ( nframes_t when, int bpb, int note_type )
{
time_track->add( new Time_Point( when, bpb, note_type ) );
}
/************/
/* Snapping */
/************/
struct nearest_line_arg
{
nframes_t original;
nframes_t closest;
bool bar;
};
const int snap_pixel = 10;
static nframes_t
abs_diff ( nframes_t n1, nframes_t n2 )
{
return n1 > n2 ? n1 - n2 : n2 - n1;
}
static void
nearest_line_snap_cb ( nframes_t frame, const BBT &bbt, void *arg )
{
nearest_line_arg *n = (nearest_line_arg *)arg;
if ( n->bar && bbt.beat )
return;
if ( Timeline::snap_magnetic &&
abs_diff( frame, n->original ) > timeline->x_to_ts( snap_pixel ) )
return;
if ( abs_diff( frame, n->original ) < abs_diff( n->original, n->closest ) )
n->closest = frame;
}
static void
nearest_line_cb ( nframes_t frame, const BBT &bbt, void *arg )
{
nearest_line_arg *n = (nearest_line_arg *)arg;
if ( n->bar && bbt.beat )
return;
if ( abs_diff( frame, n->original ) < abs_diff( n->original, n->closest ) )
n->closest = frame;
}
static void
prev_next_line_cb ( nframes_t frame, const BBT &bbt, void *arg )
{
nearest_line_arg *n = (nearest_line_arg *)arg;
if ( n->bar && bbt.beat )
return;
if ( abs_diff( frame, n->original ) < abs_diff( n->original, n->closest ) )
n->closest = frame;
}
/** Set the value pointed to by /frame/ to the frame number of the of
the nearest measure line to /when/. Returns true if the new value of
*frame is valid, false otherwise. */
bool
Timeline::nearest_line ( nframes_t *frame, bool snap ) const
{
if ( snap && ( snapping_on_hold || None == Timeline::snap_to ) )
return false;
nframes_t when = *frame;
nearest_line_arg n = { when, JACK_MAX_FRAMES, snap && Timeline::Bars == Timeline::snap_to };
render_tempomap( when > x_to_ts( w() >> 1 ) ? when - x_to_ts( w() >> 1 ) : 0,
when + x_to_ts( w() >> 1 ), snap ? nearest_line_snap_cb : nearest_line_cb, &n );
if ( n.closest == JACK_MAX_FRAMES )
return false;
else
{
*frame = n.closest;
return true;
}
}
/** Set the value pointed to by /frame/ to the frame number of the of
the nearest measure line to *greater than* /when/. Returns true if
the new value of *frame is valid, false otherwise. */
bool
Timeline::next_line ( nframes_t *frame, bool bar ) const
{
const nframes_t when = *frame + 1;
nearest_line_arg n = { when, JACK_MAX_FRAMES, bar };
const nframes_t window = sample_rate() * 60;
nframes_t length = window;
if ( when > JACK_MAX_FRAMES - length )
length = JACK_MAX_FRAMES - when;
render_tempomap( when, length, prev_next_line_cb, &n );
*frame = n.closest;
return true;
}
/** Set the value pointed to by /frame/ to the frame number of the of
the nearest measure line to *less than* /when/. Returns true if
the new value of *frame is valid, false otherwise. */
bool
Timeline::prev_line ( nframes_t *frame, bool bar ) const
{
if ( ! *frame )
return false;
const nframes_t when = *frame - 1;
nearest_line_arg n = { when, 0, bar };
const nframes_t window = sample_rate() * 60;
nframes_t start = 0;
nframes_t length = when;
if ( when > window )
{
start = when - window;
length = window;
}
render_tempomap( start, length, prev_next_line_cb, &n );
*frame = n.closest;
return true;
}
/** given screen pixel coordinate /x/ return frame offset into
* timeline, taking into account the current scroll position, widget
* layout, etc. */
nframes_t
Timeline::x_to_offset ( int x ) const
{
return x_to_ts( max( 0, x - Track::width() ) ) + xoffset;
}
int
Timeline::offset_to_x ( nframes_t frame ) const
{
return ts_to_x( frame - xoffset ) + Track::width();
}
/** draws a single measure line */
void
Timeline::draw_measure_cb ( nframes_t frame, const BBT &bbt, void *v )
{
Timeline *o = (Timeline*)v;
Fl_Color c = FL_LIGHT3;
if ( o->panzoomer->zoom() >= 15 )
return;
if ( bbt.beat )
{
if ( o->panzoomer->zoom() > 12 )
return;
else
c = FL_DARK1;
}
fl_color( fl_color_add_alpha( c, 64 ) );
const int x = timeline->ts_to_x( frame - timeline->xoffset ) + Track::width();
fl_line( x, 0, x, 2000 );
}
/* FIXME: wrong place for this */
const float ticks_per_beat = 1920.0;
/** re-render the unified tempomap based on the current contents of the Time and Tempo sequences */
void
Timeline::update_tempomap ( void )
{
/* FIXME: we need some type of locking! */
_tempomap.clear();
for ( list <Sequence_Widget *>::const_iterator i = time_track->_widgets.begin();
i != time_track->_widgets.end(); ++i )
_tempomap.push_back( *i );
for ( list <Sequence_Widget *>::const_iterator i = tempo_track->_widgets.begin();
i != tempo_track->_widgets.end(); ++i )
_tempomap.push_back( *i );
_tempomap.sort( Sequence_Widget::sort_func );
}
/** return a stucture containing the BBT info which applies at /frame/ */
position_info
Timeline::solve_tempomap ( nframes_t frame ) const
{
return render_tempomap( frame, 0, 0, 0 );
}
/* THREAD: UI and RT */
/** draw appropriate measure lines inside the given bounding box */
position_info
Timeline::render_tempomap( nframes_t start, nframes_t length, measure_line_callback * cb, void *arg ) const
{
const nframes_t end = start + length;
position_info pos;
memset( &pos, 0, sizeof( pos ) );
BBT &bbt = pos.bbt;
/* default values */
pos.beat_type = 4;
pos.beats_per_bar = 4;
pos.tempo = 120.0;
const nframes_t samples_per_minute = sample_rate() * 60;
float bpm = 120.0f;
time_sig sig;
sig.beats_per_bar = 4;
sig.beat_type = 4;
nframes_t f = 0;
nframes_t next = 0;
nframes_t frames_per_beat = samples_per_minute / bpm;
if ( ! _tempomap.size() )
return pos;
for ( list <const Sequence_Widget *>::const_iterator i = _tempomap.begin();
i != _tempomap.end(); ++i )
{
if ( ! strcmp( (*i)->class_name(), "Tempo_Point" ) )
{
const Tempo_Point *p = (Tempo_Point*)(*i);
bpm = p->tempo();
frames_per_beat = samples_per_minute / bpm;
}
else
{
const Time_Point *p = (Time_Point*)(*i);
sig = p->time();
/* Time point resets beat */
bbt.beat = 0;
}
{
list <const Sequence_Widget *>::const_iterator n = i;
++n;
if ( n == _tempomap.end() )
next = end;
else
// next = min( (*n)->start(), end );
/* points may not always be aligned with beat boundaries, so we must align here */
next = (*n)->start() - ( ( (*n)->start() - (*i)->start() ) % frames_per_beat );
}
for ( ; f < next; ++bbt.beat, f += frames_per_beat )
{
if ( bbt.beat == sig.beats_per_bar )
{
bbt.beat = 0;
++bbt.bar;
}
if ( f >= start )
{
/* in the zone */
if ( cb )
cb( f, bbt, arg );
}
/* ugliness to avoid failing out at -1 */
if ( end >= frames_per_beat )
{
if ( f >= end - frames_per_beat )
goto done;
}
else if ( f + frames_per_beat >= end )
goto done;
}
}
done:
pos.frame = f;
pos.tempo = bpm;
pos.beats_per_bar = sig.beats_per_bar;
pos.beat_type = sig.beat_type;
assert( f <= end );
assert( end - f <= frames_per_beat );
/* FIXME: this this right? */
const double frames_per_tick = frames_per_beat / ticks_per_beat;
bbt.tick = ( end - f ) / frames_per_tick;
return pos;
}
/** maybe draw appropriate measure lines in rectangle defined by X, Y, W, and H, using color /color/ as a base */
void
Timeline::draw_measure_lines ( int X, int Y, int W, int H )
{
if ( ! draw_with_measure_lines )
return;
fl_line_style( FL_SOLID, 0 );
const nframes_t start = x_to_offset( X );
const nframes_t length = x_to_ts( W );
fl_push_clip( X, Y, W, H );
render_tempomap( start, length, draw_measure_cb, this );
fl_pop_clip();
}
void
Timeline::draw_clip_rulers ( void * v, int X, int Y, int W, int H )
{
Timeline *tl = (Timeline *)v;
fl_push_clip( X, Y, W, H );
tl->draw_box();
tl->draw_child( *tl->rulers );
fl_pop_clip();
}
void
Timeline::draw_clip_tracks ( void * v, int X, int Y, int W, int H )
{
Timeline *tl = (Timeline *)v;
fl_push_clip( X, Y, W, H );
tl->draw_box();
fl_damage_t pzd = tl->panzoomer->damage();
tl->draw_child( *tl->tile );
tl->panzoomer->damage( pzd );
fl_pop_clip();
}
/** handle resize event */
void
Timeline::resize ( int X, int Y, int W, int H )
{
BASE::resize( X, Y, W, H );
tile->resizable()->resize( X,
tile->y() + tile->h() - 150,
W, 125 );
/* why is THIS necessary? */
panzoomer->resize( X,
tile->y() + tile->h() - 50,
W,
50 );
track_window->resize( X,
tile->y(),
W,
tile->h() - 50);
/* /\* rulers->resize( X, *\/ */
/* /\* rulers->y(), *\/ */
/* /\* W, *\/ */
/* /\* rulers->h() ); *\/ */
/* tile->redraw(); */
}
void
Timeline::add_cursor ( Cursor_Region *o )
{
if ( !strcmp( o->type(), "Edit" ) )
{
DMESSAGE( "Adding cursor to edit track" );
edit_cursor_track->add( o );
}
else if ( !strcmp( o->type(), "Punch" ) )
{
DMESSAGE( "Adding cursor to punch track" );
punch_cursor_track->add( o );
}
else if ( !strcmp( o->type(), "Playback" ) )
{
DMESSAGE( "Adding cursor to punch track" );
play_cursor_track->add( o );
}
}
void
Timeline::add_cursor ( Cursor_Point *o )
{
if ( !strcmp( o->type(), "Edit" ) )
edit_cursor_track->add( o );
else if ( !strcmp( o->type(), "Punch" ) )
punch_cursor_track->add( o );
}
void
Timeline::draw_cursors ( Cursor_Sequence *o ) const
{
fl_push_clip( tracks->x() + Track::width(), rulers->y() + rulers->h(), tracks->w() - Track::width(), h() - rulers->h() - panzoomer->h() );
if ( o && o->_widgets.size() > 0 )
{
for ( std::list<Sequence_Widget*>::const_iterator i = o->_widgets.begin();
i != o->_widgets.end();
i++ )
{
if ( Timeline::draw_with_cursor_overlay )
{
fl_color( fl_color_add_alpha( (*i)->box_color(), 25 ) );
fl_rectf( (*i)->line_x(), tracks->y(), (*i)->abs_w(), tracks->h() );
}
else
{
fl_color( fl_color_add_alpha( (*i)->box_color(), 127 ));
fl_line( (*i)->line_x(), tracks->y(), (*i)->line_x(), tracks->y() + tracks->h() );
fl_line( (*i)->line_x() + (*i)->abs_w(), tracks->y(), (*i)->line_x() + (*i)->abs_w(), tracks->y() + tracks->h() );
}
}
}
fl_pop_clip();
}
/** draw ancillary cursors (not necessarily in the overlay plane) */
void
Timeline::draw_cursors ( void ) const
{
draw_cursors( edit_cursor_track );
if ( transport->punch_enabled() )
draw_cursors( punch_cursor_track );
}
void
Timeline::draw ( void )
{
/* Any code that might affect the structures used for drawing from
* another thread must use Fl::lock()/unlock()! */
THREAD_ASSERT( UI );
int X, Y, W, H;
int bdx = 0;
int bdw = 0;
X = tracks->x() + bdx + 1;
Y = tracks->y();
W = tracks->w() - bdw - 1;
H = tracks->h();
adjust_panzoomer();
int dx = ts_to_x( _old_xposition ) - ts_to_x( xoffset );
int dy = _old_yposition - (int)panzoomer->y_value();
int c = damage();
// c = FL_DAMAGE_ALL;
if ( c & FL_DAMAGE_SCROLL )
{
{
/* draw_child( *rulers ); */
Y = track_window->y();
H = track_window->h();
if ( dx )
/* when scrolling horizontally, scroll rulers */
fl_scroll( rulers->x() + Track::width(),
rulers->y(),
rulers->w(),
rulers->h(), dx, 0, draw_clip_rulers, this );
if ( dy )
/* when scrolling vertically, also scroll track headers */
fl_scroll(
X,
Y,
Track::width(),
H, 0, dy, draw_clip_tracks, this );
/* scroll sequences */
fl_scroll( X + Track::width(),
Y,
W - Track::width(),
H, dx, dy, draw_clip_tracks, this );
}
}
// panzoomer->redraw();
if ( c & FL_DAMAGE_ALL )
{
DMESSAGE( "complete redraw" );
draw_box( box(), BX, BY, w(), h(), color() );
draw_child( *rulers );
fl_push_clip( tile->x(),
tile->y(),
tile->w(),
tile->h() );
draw_child(*tile);
fl_pop_clip();
redraw_overlay();
goto done;
}
if ( c & FL_DAMAGE_CHILD )
{
update_child(*rulers);
fl_push_clip( tile->x(),
tile->y(),
tile->w(),
tile->h() );
/* redraw the panzoomer preview whenever tracks change */
/* if ( tracks->damage() ) */
/* panzoomer->redraw(); */
update_child(*tile);
fl_pop_clip();
redraw_overlay();
}
done:
/* panzoomer->redraw(); */
// update_child( *panzoomer );
_old_xposition = xoffset;
_old_yposition = panzoomer->y_value();
}
void
Timeline::damage_sequence ( void )
{
panzoomer->redraw();
}
/** draw a single cursor line at /frame/ with color /color/ using symbol routine /symbol/ for the cap */
void
Timeline::draw_cursor ( nframes_t frame, Fl_Color color, void (*symbol)(Fl_Color) ) const
{
// int x = ( ts_to_x( frame ) - ts_to_x( xoffset ) ) + tracks->x() + Track::width();
if ( frame < xoffset )
return;
const int x = ts_to_x( frame - xoffset ) + tracks->x() + Track::width();
if ( x > tracks->x() + tracks->w() )
return;
const int y = rulers->y() + rulers->h();
const int h = this->h() - rulers->h() - panzoomer->h();
fl_push_clip( tracks->x() + Track::width(), y, tracks->w(), h );
fl_line_style( FL_SOLID, 0 );
fl_color( color );
fl_line( x, y, x, y + h );
fl_push_matrix();
fl_translate( x, y );
fl_scale( 8, 4 );
symbol( color );
fl_pop_matrix();
fl_pop_clip();
}
void
Timeline::draw_playhead ( void )
{
draw_cursor( transport->frame, FL_RED, draw_full_arrow_symbol );
// draw_cursor( length(), FL_BLACK, draw_full_arrow_symbol );
}
void
Timeline::redraw_playhead ( void )
{
// static nframes_t last_playhead = -1;
static int last_playhead_x = -1;
/* FIXME: kind of a hackish way to invoke punch / looping stuff from the UI thread... */
if ( transport->rolling &&
transport->rec_enabled() &&
transport->punch_enabled() )
{
if ( _punched_in &&
transport->frame > _punch_in_frame &&
transport->frame > _punch_out_frame )
{
punch_out( _punch_out_frame );
}
else if ( ! _punched_in )
{
/* we've passed one or more punch regions... punch in for the next, if available. */
const Sequence_Widget *w = punch_cursor_track->next( transport->frame );
DMESSAGE( "Delayed punch in" );
if ( w &&
w->start() > transport->frame )
{
_punch_in_frame = w->start();
_punch_out_frame = w->start() + w->length();
punch_in( w->start() );
}
}
}
if ( transport->rolling )
{
if ( play_cursor_track->active_cursor() )
{
if ( transport->loop_enabled() )
{
if ( transport->frame > playback_end() )
{
if ( ! seek_pending() )
{
if ( transport->recording )
{
stop();
transport->locate( playback_home() );
record();
}
else
{
transport->locate( playback_home() );
}
}
}
}
else
if ( transport->frame > playback_end() )
transport->stop();
}
}
int playhead_x = ts_to_x( transport->frame );
if ( last_playhead_x != playhead_x )
{
redraw_overlay();
// last_playhead = transport->frame;
last_playhead_x = playhead_x;
if ( follow_playhead )
{
if ( center_playhead && active() )
xposition( max( 0, playhead_x - ( ( tracks->w() - Track::width() ) >> 1 ) ) );
else if ( playhead_x > ts_to_x( xoffset ) + ( tracks->w() - Track::width() ) )
xposition( playhead_x );
adjust_panzoomer();
}
}
}
/** called so many times a second to redraw the playhead etc. */
void
Timeline::update_cb ( void *arg )
{
Fl::repeat_timeout( UPDATE_FREQ, update_cb, arg );
Timeline *tl = (Timeline *)arg;
tl->redraw_playhead();
}
/** draw cursors in overlay plane */
void
Timeline::draw_overlay ( void )
{
draw_playhead();
draw_cursors();
if ( ! ( _selection.w && _selection.h ) )
return;
fl_push_clip( tracks->x() + Track::width(), rulers->y() + rulers->h(), tracks->w() - Track::width(), h() - rulers->h() - panzoomer->h() );
const Rectangle &r = _selection;
fl_color( FL_MAGENTA );
fl_line_style( FL_SOLID, 0 );
fl_rect( r.x, r.y, r.w, r.h );
fl_pop_clip();
}
/** select sequence widgets within rectangle /r/ */
void
Timeline::select ( const Rectangle &r )
{
const int Y = r.y;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( ! ( t->y() > Y + r.h || t->y() + t->h() < Y ) )
t->select( r.x, r.y, r.w, r.h, true, true );
}
}
/** delete all selected sequence widgets */
void
Timeline::delete_selected ( void )
{
Sequence_Widget::delete_selected();
}
/** clear the selection of seqeunce widgets */
void
Timeline::select_none ( void )
{
Sequence_Widget::select_none();
}
int
Timeline::nselected ( void ) const
{
return Sequence_Widget::nselected();
}
/** An unfortunate necessity for implementing our own DND aside from
* the (bogus) native FLTK system */
Track *
Timeline::track_under ( int Y )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( ! ( t->y() > Y || t->y() + t->h() < Y ) )
return t;
}
return NULL;
}
#include "FL/event_name.H"
#include "FL/test_press.H"
/** a bit of a hack to keep FLTK's focus navigation stuff from
* stealing the arrow keys from us */
int
Timeline::handle_scroll ( int m )
{
if ( m == FL_KEYBOARD &&
Fl::event_key() != FL_Home &&
Fl::event_key() != FL_End )
return menu->test_shortcut() || panzoomer->handle( m );
else
return 0;
}
Track *
Timeline::event_inside ( void )
{
for ( int i = tracks->children(); i--; )
if ( Fl::event_inside( tracks->child(i) ) )
return (Track*)tracks->child(i);
return NULL;
}
int
Timeline::handle ( int m )
{
static Drag *drag = NULL;
static bool range = false;
/* if ( m != FL_NO_EVENT ) */
/* DMESSAGE( "%s", event_name( m ) ); */
/* int r = BASE::handle( m ); */
switch ( m )
{
case FL_ENTER:
return 1;
case FL_LEAVE:
return 1;
case FL_KEYDOWN:
if ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) )
/* we don't want any keys with modifiers... */
return 0;
if ( Fl::event_key() == 'r' )
{
range = true;
return 1;
}
else if ( Fl::event_key() == 's' )
{
snapping_on_hold = true;
return 1;
}
return 0;
case FL_KEYUP:
if ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) )
/* we don't want any keys with modifiers... */
return 0;
if ( Fl::event_key() == 'r' )
{
range = false;
return 1;
}
else if ( Fl::event_key() == 's' )
{
snapping_on_hold = false;
return 1;
}
return 0;
// case FL_KEYBOARD:
case FL_SHORTCUT:
{
if ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) )
/* we don't want any keys with modifiers... */
return 0;
switch ( Fl::event_key() )
{
case FL_Delete:
case FL_Home:
case FL_End:
/* keep scrollbar from eating these. */
return 0;
default:
return BASE::handle( m );
}
return 0;
}
default:
{
int r = BASE::handle( m );
if ( m != FL_RELEASE && r )
return r;
const int X = Fl::event_x();
const int Y = Fl::event_y();
switch ( m )
{
case FL_PUSH:
{
if (
Fl::event_x() >= Track::width() &&
( test_press( FL_BUTTON1 ) || test_press( FL_BUTTON1 + FL_CTRL ) ))
{
assert( ! drag );
drag = new Drag( X, Y );
_selection.x = X;
_selection.y = Y;
if ( ! Fl::event_ctrl() )
select_none();
return 1;
}
else if ( test_press( FL_BUTTON3 ) )
{
menu_popup( menu );
return 1;
}
}
return 0;
case FL_DRAG:
{
int ox = X - drag->x;
int oy = Y - drag->y;
if ( ox < 0 )
_selection.x = X;
if ( oy < 0 )
_selection.y = Y;
_selection.w = abs( ox );
_selection.h = abs( oy );
if ( range )
{
range_start( x_to_offset( _selection.x ) );
range_end( x_to_offset( _selection.x + _selection.w ) );
redraw();
}
redraw_overlay();
return 1;
break;
}
case FL_RELEASE:
{
delete drag;
drag = NULL;
if ( range )
{
range_start( x_to_offset( _selection.x ) );
range_end( x_to_offset( _selection.x + _selection.w ) );
redraw();
}
else
select( _selection );
_selection.x = _selection.y =_selection.w = _selection.h = 0;
redraw_overlay();
return 1;
}
default:
return 0;
break;
}
return 0;
}
}
}
/** retrun a pointer to the track named /name/, or NULL if no track is named /name/ */
Track *
Timeline::track_by_name ( const char *name )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( name && t->name() && ! strcmp( name, t->name() ) )
return t;
}
return NULL;
}
/** return a malloc'd string representing a unique name for a new track */
char *
Timeline::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 );
}
/**********/
/* Public */
/**********/
/** return the current length of the timeline, which is arrived at by
* calculating the end frame of the rightmost audio region on an
* active audio sequence. Control_Points, etc. do not factor into this
* calcaulation. */
nframes_t
Timeline::length ( void ) const
{
nframes_t l = 0;
for ( int i = tracks->children(); i--; )
{
Sequence *t = ((Track*)tracks->child( i ))->sequence();
if ( t )
l = max( l, ((Track*)tracks->child( i ))->sequence()->length() );
}
return l;
}
/** set horizontal scroll postion to absolute pixel coordinate /X/ */
void
Timeline::xposition ( int X )
{
xoffset = x_to_ts( X );
int dx = ts_to_x( _old_xposition ) - ts_to_x( xoffset );
if ( dx )
damage( FL_DAMAGE_SCROLL );
}
/** zoom in by one zoom step */
void
Timeline::zoom_in ( void )
{
panzoomer->zoom_in();
}
/** zoom out by one zoom step */
void
Timeline::zoom_out ( void )
{
panzoomer->zoom_out();
}
/** zoom the display to show /secs/ seconds per screen */
void
Timeline::zoom ( float secs )
{
const int sw = tracks->w() - Track::width();
int fpp = (int)((secs * sample_rate()) / sw);
int p = 0;
while ( 1 << p < fpp ) p++;
panzoomer->zoom( p );
redraw();
}
/** fit the zoom to the current length of the timeline (subject to nearest power of two) */
void
Timeline::zoom_fit ( void )
{
xposition( 0 );
if ( length() )
zoom( length() / (float)sample_rate() );
else
zoom( 60 );
}
/** add /track/ to the timeline */
void
Timeline::add_track ( Track *track )
{
DMESSAGE( "added new track to the timeline" );
tracks->add( track );
/* FIXME: why is this necessary? doesn't the above add do DAMAGE_CHILD? */
redraw();
}
void
Timeline::insert_track ( Track *track, Track *before )
{
tracks->insert( *track, before );
tracks->redraw();
}
void
Timeline::insert_track ( Track *track, int n )
{
if ( n > tracks->children() || n < 0 )
return;
tracks->insert( *track, n );
tracks->redraw();
/* FIXME: why is this necessary? doesn't the above add do DAMAGE_CHILD? */
// redraw();
}
static
bool
compare_tracks ( Track *a, Track *b )
{
return *a < *b;
}
void
Timeline::apply_track_order ( void )
{
/* wrlock(); */
std::list<Track*> tl;
for ( int i = 0; i < tracks->children(); i++ )
tl.push_back( (Track*)tracks->child( i ) );
tl.sort(compare_tracks);
Fl_Widget **a = const_cast<Fl_Widget**>(tracks->array());
int j = 0;
for ( std::list<Track*>::const_iterator i = tl.begin();
i != tl.end();
i++, j++ )
a[j] = *i;
update_track_order();
/* unlock(); */
}
void
Timeline::update_track_order ( void )
{
for ( int i = 0; i < tracks->children(); i++ )
((Track*)tracks->child( i ))->row( i );
}
int
Timeline::find_track ( const Track *track ) const
{
return tracks->find( *track );
}
/** remove /track/ from the timeline */
void
Timeline::remove_track ( Track *track )
{
DMESSAGE( "removed track from the timeline" );
/* FIXME: what to do about track contents? */
tracks->remove( track );
/* FIXME: why is this necessary? doesn't the above add do DAMAGE_CHILD? */
redraw();
}
/************/
/* Commands */
/************/
void
Timeline::command_move_track_up ( Track *track )
{
wrlock();
insert_track( track, find_track( track ) - 1 );
unlock();
}
void
Timeline::command_move_track_down ( Track *track )
{
wrlock();
insert_track( track, find_track( track ) + 2 );
unlock();
}
void
Timeline::command_remove_track ( Track *track )
{
wrlock();
remove_track(track);
unlock();
}
void
Timeline::command_quit ( void )
{
timeline->wrlock();
Project::close();
timeline->unlock();
command_save();
while ( Fl::first_window() ) Fl::first_window()->hide();
}
void
Timeline::command_undo ( void )
{
wrlock();
Project::undo();
unlock();
}
bool
Timeline::command_load ( const char *name, const char *display_name )
{
if ( ! name )
return false;
wrlock();
int r = Project::open( name );
unlock();
if ( r < 0 )
{
const char *s = Project::errstr( r );
fl_alert( "Could not open project \"%s\":\n\n\t%s", name, s );
return false;
}
Project::set_name ( display_name ? display_name : name );
apply_track_order();
return true;
}
bool
Timeline::command_save ( )
{
tle->save_options();
return true;
}
bool
Timeline::command_new ( const char *name, const char *display_name )
{
bool b = Project::create( name, NULL );
Project::set_name ( display_name );
/* FIXME: there's other stuff that needs to be done here! */
/* tle->update_menu(); */
/* tle->main_window->redraw(); */
return b;
}
const char *
Timeline::session_manager_name ( void )
{
return nsm_get_session_manager_name( nsm );
}
/*******/
/* OSC */
/*******/
int
Timeline::init_osc ( const char *osc_port )
{
osc = new OSC::Endpoint();
if ( int r = osc->init( LO_UDP, osc_port ) )
return r;
osc->owner = this;
char *url = osc->url();
printf( "OSC=%s\n", url );
free(url);
osc->add_method( "/non/hello", "ssss", &Timeline::osc_non_hello, osc, "" );
// osc->start();
if ( ! osc_thread )
{
osc_thread = new OSC_Thread();
osc_thread->start();
}
return 0;
}
int
Timeline::osc_non_hello ( const char *, const char *, lo_arg **, int , lo_message msg, void * )
{
THREAD_ASSERT( OSC );
timeline->handle_hello(msg);
return 0;
}
void
Timeline::handle_hello ( lo_message msg )
{
int argc = lo_message_get_argc( msg );
lo_arg **argv = lo_message_get_argv( msg );
if ( argc >= 4 )
{
const char *url = &argv[0]->s;
const char *name = &argv[1]->s;
const char *version = &argv[2]->s;
const char *id = &argv[3]->s;
MESSAGE( "Got hello from NON peer %s (%s) @ %s with ID \"%s\"", name, version, url, id );
osc->handle_hello( &argv[3]->s, &argv[0]->s );
}
}
void
Timeline::say_hello ( void )
{
if ( nsm_is_active( nsm ) )
{
lo_message m = lo_message_new();
lo_message_add( m, "sssss",
"/non/hello",
osc->url(),
APP_NAME,
VERSION,
instance_name );
nsm_send_broadcast( nsm, m );
}
}
void
Timeline::connect_osc ( void )
{
/* reconnect OSC signals */
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->connect_osc();
}
}
void
Timeline::update_osc_connection_state ( void )
{
/* reconnect OSC signals */
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->update_osc_connection_state();
}
}
/* runs in the OSC thread... */
void
Timeline::process_osc ( void )
{
THREAD_ASSERT( OSC );
/* rdlock(); */
/* reconnect OSC signals */
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->process_osc();
}
/* unlock(); */
}
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