non/timeline/src/Audio_Sequence.C

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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. */
/*******************************************************************************/
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/* An Audio_Sequence is a sequence of Audio_Regions. Takes and 'track
* contents' consist of these objects */
#include "debug.h"
#include <sys/time.h>
#include <FL/fl_ask.H>
#include <FL/Fl.H>
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#include "Audio_Sequence.H"
#include "Waveform.H"
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#include <list>
using namespace std;
#include "Track.H"
#include "Engine/Audio_File.H" // for ::from_file()
#include "Transport.H" // for locate()
#include "Track_Header.H"
#include <errno.h>
#include <unistd.h> // for symlink()
#include "string_util.h"
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const char *
Audio_Sequence::name ( void ) const
{
return Sequence::name();
}
void
Audio_Sequence::name ( const char *s )
{
Sequence::name( s );
header()->name_input->value( s );
}
void
Audio_Sequence::cb_button ( Fl_Widget *w, void *v )
{
((Audio_Sequence*)v)->cb_button( w );
}
void
Audio_Sequence::cb_button ( Fl_Widget *w )
{
Logger log(this);
if ( w == header()->name_input )
{
Sequence::name( header()->name_input->value() );
}
else if ( w == header()->delete_button )
{
track()->remove( this );
}
else if ( w == header()->promote_button )
{
track()->sequence( this );
}
}
void
Audio_Sequence::init ( void )
{
labeltype( FL_NO_LABEL );
{
Audio_Sequence_Header *o = new Audio_Sequence_Header( x(), y(), Track::width(), 52 );
o->name_input->callback( cb_button, this );
o->delete_button->callback( cb_button, this );
o->promote_button->callback( cb_button, this );
Fl_Group::add( o );
}
resizable(0);
}
Audio_Sequence::Audio_Sequence ( Track *track, const char *name ) : Sequence( track )
{
_track = track;
init();
if ( name )
Audio_Sequence::name( name );
else
{
struct timeval tv;
gettimeofday( &tv, NULL );
time_t t = tv.tv_sec;
char s[40];
ctime_r( &t, s );
s[ strlen( s ) - 1 ] = 0;
Audio_Sequence::name( s );
}
if ( track )
track->add( this );
log_create();
}
Audio_Sequence::~Audio_Sequence ( )
{
Loggable::block_start();
clear();
log_destroy();
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track()->remove( this );
Loggable::block_end();
}
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/** return a pointer to the current capture region for this sequence */
const Audio_Region *
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Audio_Sequence::capture_region ( void ) const
{
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return track()->capture_region();
}
void
Audio_Sequence::get ( Log_Entry &e ) const
{
e.add( ":track", _track );
e.add( ":name", name() );
}
void
Audio_Sequence::set ( Log_Entry &e )
{
for ( int i = 0; i < e.size(); ++i )
{
const char *s, *v;
e.get( i, &s, &v );
if ( ! strcmp( ":track", s ) )
{
int i;
sscanf( v, "%X", &i );
Track *t = (Track*)Loggable::find( i );
assert( t );
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t->sequence( this );
}
else if ( ! strcmp( ":name", s ) )
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name( v );
}
}
void
Audio_Sequence::handle_widget_change ( nframes_t start, nframes_t length )
{
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Sequence::handle_widget_change( start, length );
/* a region has changed. we may need to rebuffer... */
/* trigger rebuffer */
/* FIXME: we really only need to rebuffer *this* sequence! */
/* FIXME: how does this fit into the selection? */
if ( transport->rolling && ( start > transport->frame || start + length > transport->frame ) )
transport->locate( transport->frame );
}
void
Audio_Sequence::draw ( void )
{
Sequence::draw();
int xfades = 0;
fl_push_clip( drawable_x(), y(), drawable_w(), h() );
/* draw crossfades */
for ( list <Sequence_Widget *>::const_iterator r = _widgets.begin(); r != _widgets.end(); r++ )
{
Sequence_Widget *o = overlaps( *r );
if ( o )
{
if ( *o <= **r )
{
/* if ( o->x() == (*r)->x() && o->w() == (*r)->w() ) */
/* printf( "complete superposition\n" ); */
if ( o->contains( *r ) )
/* completely inside */
continue;
++xfades;
Rectangle b( (*r)->x(),
o->y(),
(o->x() + o->w()) - (*r)->x(),
o->h() );
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cairo_t *cc = Fl::cairo_cc();
cairo_set_operator( cc, CAIRO_OPERATOR_HSL_COLOR );
cairo_set_source_rgba( cc, 1, 1, 0, 0.80 );
cairo_rectangle( cc, b.x, b.y, b.w, b.h );
cairo_fill( cc );
cairo_set_operator( cc, CAIRO_OPERATOR_OVER );
}
}
}
fl_pop_clip();
}
/** event handler that supports DND of audio clips */
int
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Audio_Sequence::handle ( int m )
{
switch ( m )
{
case FL_PASTE:
{
if ( ! Fl::event_inside( this ) )
return 0;
const char *text = Fl::event_text();
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if ( ! strcmp( text, "Audio_Region" ) )
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return 1;
char *file;
if ( ! sscanf( text, "file://%a[^\r\n]\n", &file ) )
{
WARNING( "invalid drop \"%s\"\n", text );
return 0;
}
unescape_url( file );
printf( "pasted file \"%s\"\n", file );
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fl_cursor( FL_CURSOR_WAIT );
Fl::check();
char *t = strdup( file );
char *filebase = strdup( basename( t ) );
free( t );
char *s = 0;
int i = 0;
for ( ; ; i++ )
{
if ( i )
{
free( s );
asprintf( &s, "sources/%s-%i", filebase, i );
}
else
asprintf( &s, "sources/%s", filebase );
DMESSAGE( "Symlink %s -> %s", file, s );
if ( symlink( file, s ) == 0 )
break;
if ( errno != EEXIST )
{
WARNING( "Failed to create symlink: %s", strerror( errno ) );
break;
}
}
Audio_File *c = Audio_File::from_file( basename( s ) );
free( s );
free( filebase );
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fl_cursor( FL_CURSOR_DEFAULT );
Fl::check();
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if ( ! c || c->dummy() )
{
fl_alert( "Could not import file \"%s\"", file );
free( file );
if ( c )
{
delete c;
c = NULL;
}
return 0;
}
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free( file );
Audio_Region *r =
new Audio_Region( c, this, timeline->xoffset + timeline->x_to_ts( Fl::event_x() - drawable_x() ) );
r->log_create();
redraw();
return 1;
}
default:
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return Sequence::handle( m );
}
}