non/timeline/src/Audio_Region.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. */
/*******************************************************************************/
#include <FL/fl_draw.H>
#include <FL/Fl.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/fl_show_colormap.H>
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#include "Sequence.H"
#include "Audio_Region.H"
#include "Timeline.H"
#include "Waveform.H"
#include "Audio_Sequence.H"
#include "Track.H"
#include "Engine/Audio_File.H"
#include "Transport.H"
#include "const.h"
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#include "debug.h"
#include <algorithm>
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using std::min;
using std::max;
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/* defined in timeline.C */
extern void draw_full_arrow_symbol ( Fl_Color color );
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extern Timeline *timeline;
extern Transport *transport;
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bool Audio_Region::inherit_track_color = true;
bool Audio_Region::show_box = true;
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Fl_Boxtype Audio_Region::_box = FL_FLAT_BOX;
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Fl_Color Audio_Region::_selection_color = FL_MAGENTA;
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static Fl_Color fl_invert_color ( Fl_Color c )
{
unsigned char r, g, b;
Fl::get_color( c, r, g, b );
return fl_rgb_color( 255 - r, 255 - g, 255 - b );
}
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void
Audio_Region::get ( Log_Entry &e ) const
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{
e.add( ":source", _clip ? _clip->name() : "" );
e.add( ":gain", _scale );
e.add( ":fade-in-type", _fade_in.type );
e.add( ":fade-in-duration", _fade_in.length );
e.add( ":fade-out-type", _fade_out.type );
e.add( ":fade-out-duration", _fade_out.length );
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Sequence_Region::get( e );
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e.add( ":offset", _r->offset );
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e.add( ":loop", _loop );
}
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void
Audio_Region::set ( Log_Entry &e )
{
for ( int i = 0; i < e.size(); ++i )
{
const char *s, *v;
e.get( i, &s, &v );
if ( ! strcmp( s, ":gain" ) )
_scale = atof( v );
else if ( ! strcmp( s, ":fade-in-type" ) )
_fade_in.type = (Fade::fade_type_e)atoi( v );
else if ( ! strcmp( s, ":fade-in-duration" ) )
_fade_in.length = atoll( v );
else if ( ! strcmp( s, ":fade-out-type" ) )
_fade_out.type = (Fade::fade_type_e)atoi( v );
else if ( ! strcmp( s, ":fade-out-duration" ) )
_fade_out.length = atoll( v );
else if ( ! strcmp( s, ":offset" ) )
_r->offset = atoll( v );
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else if ( ! strcmp( s, ":loop" ) )
_loop = atoll( v );
else if ( ! strcmp( s, ":source" ) )
{
if ( ! ( _clip = Audio_File::from_file( v ) ) )
{
printf( "Grave error: could not open source \"%s\"\n", v );
}
}
}
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Sequence_Region::set( e );
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}
void
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Audio_Region::init ( void )
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{
_adjusting_gain = 0;
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_loop = 0;
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_sequence = NULL;
_scale = 1.0f;
_clip = NULL;
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_color = FL_FOREGROUND_COLOR;
_box_color = FL_GRAY;
_fade_in.length = 256;
_fade_in.type = Fade::Sigmoid;
_fade_out = _fade_in;
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}
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/* copy constructor */
Audio_Region::Audio_Region ( const Audio_Region & rhs ) : Sequence_Region( rhs )
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{
// *((Sequence_Region*)this) = (Sequence_Region &)rhs;
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_clip = rhs._clip->duplicate();
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_scale = rhs._scale;
_fade_in = rhs._fade_in;
_fade_out = rhs._fade_out;
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_loop = rhs._loop;
_box_color = rhs._box_color;
_color = rhs._color;
_adjusting_gain = false;
log_create();
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}
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/* */
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Audio_Region::Audio_Region ( Audio_File *c )
{
init();
_clip = c;
_r->length = _clip->length();
log_create();
}
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/* used when DND importing */
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Audio_Region::Audio_Region ( Audio_File *c, Sequence *t, nframes_t o )
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{
init();
_clip = c;
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_sequence = t;
_r->offset = 0;
_r->start = o;
_r->length = _clip->length();
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sequence()->add( this );
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int sum = 0;
const char *s = rindex( _clip->name(), '/' );
if ( ! s )
s = _clip->name();
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for ( int i = strlen( s ); i--; )
sum += s[ i ];
while ( sum >> 8 )
sum = (sum & 0xFF) + (sum >> 8);
_box_color = (Fl_Color)sum;
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log_create();
}
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Audio_Region::~Audio_Region ( )
{
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log_destroy();
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_clip->release();
}
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void
Audio_Region::menu_cb ( Fl_Widget *w, void *v )
{
((Audio_Region*)v)->menu_cb( (Fl_Menu_*) w );
}
void
Audio_Region::menu_cb ( const Fl_Menu_ *m )
{
char picked[256];
m->item_pathname( picked, sizeof( picked ) );
Logger log( this );
if ( ! strcmp( picked, "Fade/In/Linear" ) )
_fade_in.type = Fade::Linear;
else if ( ! strcmp( picked, "Fade/In/Sigmoid" ) )
_fade_in.type = Fade::Sigmoid;
else if ( ! strcmp( picked, "Fade/In/Logarithmic" ) )
_fade_in.type = Fade::Logarithmic;
else if ( ! strcmp( picked, "Fade/In/Parabolic" ) )
_fade_in.type = Fade::Parabolic;
else if ( ! strcmp( picked, "Fade/Out/Linear" ) )
_fade_out.type = Fade::Linear;
else if ( ! strcmp( picked, "Fade/Out/Sigmoid" ) )
_fade_out.type = Fade::Sigmoid;
else if ( ! strcmp( picked, "Fade/Out/Logarithmic" ) )
_fade_out.type = Fade::Logarithmic;
else if ( ! strcmp( picked, "Fade/Out/Parabolic" ) )
_fade_out.type = Fade::Parabolic;
else if ( ! strcmp( picked, "/Color" ) )
box_color( fl_show_colormap( box_color() ) );
else if ( ! strcmp( picked, "/Split at mouse" ) )
{
Loggable::block_start();
split( timeline->x_to_offset( Fl::event_x() ) );
log_end();
Loggable::block_end();
log_start();
}
else if ( ! strcmp( picked, "/Crop to range" ) )
{
trim_left( timeline->range_start() );
trim_right( timeline->range_end() );
}
else if ( ! strcmp( picked, "/Fade in to mouse" ) )
{
nframes_t offset = x_to_offset( Fl::event_x() );
if ( offset < length() )
_fade_in.length = offset;
DMESSAGE( "set fade in duration" );
}
else if ( ! strcmp( picked, "/Fade out to mouse" ) )
{
long offset = length() - x_to_offset( Fl::event_x() );
if ( offset > 0 )
_fade_out.length = offset;
}
else if ( ! strcmp( picked, "/Gain with mouse vertical drag" ) )
{
/* float g = h() / (y() - Fl::event_y() ); */
/* _scale = g; */
}
else if ( ! strcmp( picked, "/Loop point to mouse" ) )
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{
nframes_t offset = x_to_offset( Fl::event_x() );
if ( offset > 0 )
{
nframes_t f = offset + _r->start;
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if ( timeline->nearest_line( &f, false ) )
_loop = f - _r->start;
else
_loop = offset;
}
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}
else if ( ! strcmp( picked, "/Clear loop point" ) )
_loop = 0;
else if ( ! strcmp( picked, "/Normalize" ) )
normalize();
else if ( ! strcmp( picked, "/Denormalize" ) )
_scale = 1.0;
else if ( ! strcmp( picked, "/Range from" ) )
timeline->range( start(), length() );
else if ( ! strcmp( picked, "/Remove" ) )
remove();
else
FATAL( "Unknown menu choice \"%s\"", picked );
redraw();
}
#include "FL/test_press.H"
#include "FL/menu_popup.H"
/** build the context menu for this region */
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Fl_Menu_Button &
Audio_Region::menu ( void )
{
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static Fl_Menu_Button m( 0, 0, 0, 0, "Region" );
Fade::fade_type_e it = _fade_in.type;
Fade::fade_type_e ot = _fade_out.type;
Fl_Menu_Item items[] =
{
{ "Fade", 0, 0, 0, FL_SUBMENU },
{ "In", 0, 0, 0, FL_SUBMENU },
{ "Linear", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Linear ? FL_MENU_VALUE : 0 ) },
{ "Sigmoid", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Sigmoid ? FL_MENU_VALUE : 0 ) },
{ "Logarithmic", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Logarithmic ? FL_MENU_VALUE : 0 ) },
{ "Parabolic", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Parabolic ? FL_MENU_VALUE : 0 ) },
{ 0 },
{ "Out", 0, 0, 0, FL_SUBMENU },
{ "Linear", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Linear ? FL_MENU_VALUE : 0 ) },
{ "Sigmoid", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Sigmoid ? FL_MENU_VALUE : 0 ) },
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{ "Logarithmic", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Logarithmic ? FL_MENU_VALUE : 0 ) },
{ "Parabolic", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Parabolic ? FL_MENU_VALUE : 0 ) },
{ 0 },
{ 0 },
{ "Color", 0, 0, 0, inherit_track_color ? FL_MENU_INACTIVE : 0 },
{ "Split at mouse", 's', 0, 0 },
{ "Crop to range", 'c', 0, 0 },
{ "Gain with mouse vertical drag", 'g', 0, 0 },
{ "Fade in to mouse", FL_F + 3, 0, 0 },
{ "Fade out to mouse", FL_F + 4, 0, 0 },
{ "Loop point to mouse", 'l', 0, 0 },
{ "Clear loop point", FL_SHIFT + 'l', 0, 0, 0 == _loop ? FL_MENU_INACTIVE : 0 },
{ "Normalize", 'n', 0, 0 },
{ "Denormalize", FL_SHIFT + 'n', 0, 0, 1.0 == _scale ? FL_MENU_INACTIVE : 0 },
{ "Range from", FL_CTRL + 'r', 0, 0 },
{ "Remove", 0, 0, 0 },
{ 0 },
};
menu_set_callback( items, &Audio_Region::menu_cb, (void*)this );
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m.copy( items, (void*)this );
return m;
}
/** Draws the curve for a single fade. /X/ and /W/ repersent the
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portion of the region covered by this draw, which may or may not
cover the fade in question. */
void
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Audio_Region::draw_fade ( const Fade &fade, Fade::fade_dir_e dir, bool line, int X, int W )
{
const int dy = y() + Fl::box_dy( box() );
const int dh = h() - Fl::box_dh( box() );
const int height = dh;
const int width = timeline->ts_to_x( fade.length );
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if ( width < 4 )
/* too small to draw */
return;
int fx;
if ( dir == Fade::In )
{
fx = line_x();
if ( fx + width < X ||
fx > X + W )
/* clipped */
return;
}
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else
{
fx = line_x() + abs_w();
if ( fx - width > X + W ||
fx < X )
/* clipped */
return;
}
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if ( line )
fl_begin_line();
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else
fl_begin_polygon();
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fl_vertex( fx, dy );
fl_vertex( fx, dy + height );
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{
nframes_t tsx = timeline->x_to_ts( 1 );
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if ( dir == Fade::In )
{
nframes_t ts = 0;
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for ( int i = 0; i < width; ++i, ts += tsx )
fl_vertex( fx + i, dy + height - ( height * fade.gain( ts / (double)fade.length ) ));
}
else
{
nframes_t ts = tsx * width;
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for ( int i = 0; i < width; ++i, ts -= tsx )
fl_vertex( fx - i, dy + ( height * fade.gain( ts / (double)fade.length ) ));
}
}
if ( dir == Fade::In )
fl_vertex( fx + width, dy );
else
fl_vertex( fx - width, dy );
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if ( line )
fl_end_line();
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else
fl_end_polygon();
}
void
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Audio_Region::draw_box( void )
{
fl_push_clip( x(), y(), w(), h() );
Fl_Color selection_color = _selection_color;
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Fl_Color color = Audio_Region::inherit_track_color ? sequence()->track()->color() : _box_color;
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color = fl_color_average( color, sequence()->color(), 0.75f );
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if ( recording() )
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{
color = FL_RED;
}
else if ( ! active_r() )
{
color = fl_inactive( color );
selection_color = fl_inactive( selection_color );
}
Fl_Boxtype b;
Fl_Color c = selected() ? selection_color : color;
if ( Audio_Region::show_box )
{
b = box();
}
else
{
b = FL_DOWN_FRAME;
}
fl_draw_box( b, x(), y(), w(), h(), c );
fl_pop_clip();
}
void
Audio_Region::peaks_ready_callback ( void *v )
{
DMESSAGE("Damaging region from peaks ready callback");
Fl::lock();
((Audio_Region*)v)->redraw();
Fl::unlock();
Fl::awake();
}
bool
Audio_Region::recording ( void ) const
{
return this == sequence()->track()->capture_region();
}
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/** Draw (part of) region. X, Y, W and H are the rectangle we're clipped to. */
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void
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Audio_Region::draw ( void )
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{
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/* intersect clip with region */
int X, Y, W, H;
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fl_clip_box( x(), y(), w(), h(), X, Y, W, H );
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if ( ! ( W > 0 && H > 0 ) )
/* no coverage */
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return;
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if ( start() > timeline->xoffset + timeline->x_to_ts( sequence()->w() ) ||
start() + length() < timeline->xoffset )
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/* not in viewport */
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return;
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fl_push_clip( X, Y, W, H );
/* overdraw a little to avoid artifacts when scrolling */
W += 2;
Fl_Color c = selected() ? fl_invert_color( _color ) : _color;
if ( sequence()->damage() & FL_DAMAGE_USER1 &&
recording() )
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{
/* TODO: limit drawing. */
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}
/* calculate waveform offset due to scrolling */
/* offset is the number of frames into the waveform the value of X translates to */
nframes_t x_frame = timeline->xoffset + timeline->x_to_ts( X - _sequence->x() );
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nframes_t offset = 0;
if ( x_frame < start() )
/* sometimes X is one pixel too soon... */
offset = 0;
else
offset = x_frame - start();
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nframes_t fo = 0;
nframes_t ostart = 0, oend = 0;
const int total_peaks_needed = W;
nframes_t total_frames_needed = timeline->x_to_ts( total_peaks_needed );
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{
Fl_Color c = fl_color_average( FL_DARK1,
Audio_Region::inherit_track_color ? sequence()->track()->color() : _box_color,
0.75f );
fl_color( fl_color_add_alpha( c, 127 ) );
draw_fade( _fade_in, Fade::In, false, X, W );
draw_fade( _fade_out, Fade::Out, false, X, W );
}
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int channels = 0;
int peaks = 0;
Peak *pbuf = NULL;
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do {
nframes_t start = _r->offset;
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nframes_t loop_frames_needed = _loop ? _loop : total_frames_needed;
int loop_peaks_needed = timeline->ts_to_x( loop_frames_needed );
Fl_Color c = Fl::get_color( _color );
if ( recording() )
{
// loop_peaks_needed = timeline->ts_to_x( _range.length );
c = FL_BLACK;
}
c = fl_color_add_alpha( c, 220 );
if ( ! fo ) /* first loop... */
{
if ( _loop )
start += offset % _loop;
else
start += offset;
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/* DMESSAGE( "offset = %lu", (unsigned long) offset ); */
/* DMESSAGE( "loop peaks needed = %d", loop_peaks_needed ); */
if ( _loop )
{
loop_frames_needed -= offset % loop_frames_needed;
loop_peaks_needed = timeline->ts_to_x( loop_frames_needed );
}
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/* DMESSAGE( "loop peaks needed = %d", loop_peaks_needed ); */
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assert( loop_peaks_needed >= 0 );
}
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if ( fo + loop_frames_needed > total_frames_needed )
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{
loop_frames_needed -= ( fo + loop_frames_needed ) - total_frames_needed;
loop_peaks_needed = timeline->ts_to_x( loop_frames_needed );
}
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if ( !loop_peaks_needed )
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break;
const nframes_t end = start + loop_frames_needed;
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if ( start != ostart || end != oend )
{
if ( _clip->peaks()->peakfile_ready() )
{
if ( _clip->read_peaks( timeline->fpp(),
start,
end,
&peaks, &pbuf, &channels ) )
{
Waveform::scale( pbuf, peaks * channels, _scale );
ostart = start;
oend = end;
}
}
else
{
if ( ! transport->rolling )
{
/* create a thread to make the peaks */
_clip->peaks()->make_peaks_asynchronously( Audio_Region::peaks_ready_callback, this );
}
}
}
else
{
// DMESSAGE( "using cached peaks" );
}
if ( peaks && pbuf )
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{
int ch = (h() - Fl::box_dh( box() )) / channels;
int xo = timeline->ts_to_x( fo );
for ( int i = 0; i < channels; ++i )
{
Waveform::draw( X + xo,
(y() + Fl::box_dy( box() )) + (i * ch),
loop_peaks_needed,
ch,
pbuf + i, peaks, channels,
c );
}
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}
else
WARNING( "Pbuf == %p, peaks = %lu", pbuf, (unsigned long)peaks );
if ( peaks < loop_peaks_needed )
{
DMESSAGE( "Peak read came up %lu peaks short", (unsigned long)loop_peaks_needed - peaks );
}
fo += loop_frames_needed;
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}
while ( _loop && fo < total_frames_needed );
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if ( _loop && offset < _loop )
{
const int lx = get_x( start() + _loop );
if ( lx < X + W )
{
fl_color( FL_RED );
fl_line_style( FL_DASH, 0 );
fl_line( lx, y(), lx, y() + h() );
fl_line_style( FL_SOLID, 0 );
}
}
if ( _adjusting_gain )
{
fl_color( fl_color_add_alpha( FL_DARK1, 127 ) );
fl_rectf( X, ( y() + h() ) - ( h() * ( _scale * 0.25 ) ), X + W, y() + h() );
fl_line_style( FL_DASH, 1 );
fl_color( fl_color_add_alpha( FL_GREEN, 200 ) );
float j = 5;
for ( int i = y() + h(); i > y(); i -= j, j *= 1.2 )
{
fl_line( X, i, X + W, i );
}
fl_line_style( FL_SOLID, 0 );
}
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/* if ( current() ) */
/* { */
/* /\* draw length bubble *\/ */
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/* char pat[40]; */
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/* snprintf( pat, sizeof( pat ), "%dm:%.1fs", (int)(length() / timeline->sample_rate()) / 60, (double)length() / timeline->sample_rate() ); */
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/* draw_label( pat, (Fl_Align)(FL_ALIGN_INSIDE | FL_ALIGN_CENTER), FL_GREEN ); */
/* } */
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fl_pop_clip();
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}
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void
Audio_Region::draw_label ( void )
{
if ( _clip->dummy() )
{
char pat[256];
snprintf( pat, sizeof( pat ), "Missing Source!: %s", _clip->name() );
draw_label( pat, align() );
}
else
draw_label( _clip->name(), align() );
}
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/** split region at absolute frame /where/ */
void
Audio_Region::split ( nframes_t where )
{
nframes_t old_fade_in = _fade_in.length;
_fade_in.length = 256;
Audio_Region *copy = new Audio_Region( *this );
Logger _log( copy );
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_fade_in.length = old_fade_in;
_fade_out.length = 256;
Sequence_Region::split( copy, where );
}
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int
Audio_Region::handle ( int m )
{
static int ox, oy;
static bool copied = false;
static nframes_t os;
int X = Fl::event_x();
int Y = Fl::event_y();
Logger _log( this );
switch ( m )
{
case FL_FOCUS:
case FL_UNFOCUS:
return 1;
case FL_KEYUP:
if ( Fl::event_key() == 'g' )
{
_adjusting_gain = false;
redraw();
return 1;
}
break;
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case FL_KEYBOARD:
if ( Fl::event_key() == 'g' )
{
_adjusting_gain = true;
redraw();
return 1;
}
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return menu().test_shortcut() != 0;
case FL_ENTER:
return Sequence_Region::handle( m );
case FL_LEAVE:
return Sequence_Region::handle( m );
case FL_PUSH:
{
if ( Fl::event_key() == 'g' )
return 1;
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/* splitting */
if ( test_press( FL_BUTTON2 | FL_SHIFT ) )
{
/* split */
if ( ! copied )
{
Loggable::block_start();
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split( timeline->x_to_offset( X ) );
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log_end();
Loggable::block_end();
log_start();
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}
return 0;
}
else
{
ox = x() - X;
oy = y() - Y;
/* for panning */
os = _r->offset;
if ( test_press( FL_BUTTON2 | FL_CTRL ) )
{
normalize();
return 1;
}
else if ( test_press( FL_BUTTON3 ) )
{
/* context menu */
menu_popup( &menu() );
return 1;
}
else
return Sequence_Region::handle( m );
}
break;
}
case FL_RELEASE:
{
Sequence_Region::handle( m );
copied = false;
return 1;
}
case FL_DRAG:
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if ( ! _drag )
{
begin_drag( Drag( x() - X, y() - Y, x_to_offset( X ) ) );
_log.hold();
}
if ( Fl::event_key() == 'g' )
{
float d = (float)h() / ( y() - Fl::event_y() );
_scale = -0.5f * d;
redraw();
return 1;
}
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if ( test_press( FL_BUTTON1 | FL_SHIFT | FL_CTRL ) )
{
/* panning */
int d = (ox + X) - x();
bool negative = d < 0;
if ( d < 0 )
_r->offset = os + timeline->x_to_ts( 0 - d );
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else
{
if ( os < timeline->x_to_ts( d ) )
_r->offset = 0;
else
_r->offset = os - timeline->x_to_ts( d );
}
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redraw();
return 1;
}
return Sequence_Region::handle( m );
default:
return Sequence_Region::handle( m );
break;
}
return 0;
}
/**********/
/* Public */
/**********/
/** return the name of the audio source this region represents */
const char *
Audio_Region::source_name ( void ) const
{
return _clip->name();
}
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/** set the amplitude scaling for this region from the normalization
* factor for the range of samples represented by this region */
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void
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Audio_Region::normalize ( void )
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{
int peaks, channels;
Peak *pbuf;
const nframes_t npeaks = _loop ? _loop : length();
if ( _clip->read_peaks( npeaks, offset(), offset() + npeaks, &peaks, &pbuf, &channels ) &&
peaks )
_scale = pbuf->normalization_factor();
/* FIXME: wrong place for this? */
sequence()->handle_widget_change( start(), length() );
redraw();
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}