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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 "Sequence.H"
#include "Audio_Region.H"
#include "Timeline.H"
#include "Waveform.H"
#include "Audio_Sequence.H"
#include "Track.H"
#include "dsp.h"
#include <FL/fl_draw.H>
#include <FL/Fl.H>
#include <FL/Fl_Group.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Menu_Item.H>
#include <stdio.h>
#include <algorithm>
// using std::algorithm;
using namespace std;
extern Timeline *timeline;
bool Audio_Region::inherit_track_color = true;
Fl_Boxtype Audio_Region::_box = FL_UP_BOX;
Fl_Color Audio_Region::_selection_color = FL_MAGENTA;
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 );
}
void
Audio_Region::get ( Log_Entry &e ) const
{
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 );
e.add( ":color", (int)_box_color );
Sequence_Region::get( e );
e.add( ":offset", _r->offset );
}
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, ":color" ) )
_box_color = (Fl_Color)atoi( 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 );
else if ( ! strcmp( s, ":source" ) )
{
if ( ! ( _clip = Audio_File::from_file( v ) ) )
{
printf( "Grave error: could not open source \"%s\"\n", v );
}
}
}
Sequence_Region::set( e );
}
void
Audio_Region::init ( void )
{
_sequence = NULL;
_scale = 1.0f;
_clip = NULL;
_box_color = FL_CYAN;
_color = FL_BLUE;
_fade_in.length = 256;
_fade_in.type = Fade::Sigmoid;
_fade_out = _fade_in;
}
/* copy constructor */
Audio_Region::Audio_Region ( const Audio_Region & rhs ) : Sequence_Region( rhs )
{
// *((Sequence_Region*)this) = (Sequence_Region &)rhs;
_clip = rhs._clip;
_scale = rhs._scale;
_fade_in = rhs._fade_in;
_fade_out = rhs._fade_out;
log_create();
}
/* */
Audio_Region::Audio_Region ( Audio_File *c )
{
init();
_clip = c;
_r->length = _clip->length();
log_create();
}
/* used when DND importing */
Audio_Region::Audio_Region ( Audio_File *c, Sequence *t, nframes_t o )
{
init();
_clip = c;
_sequence = t;
_r->offset = 0;
_r->start = o;
_r->length = _clip->length();
sequence()->add( this );
int sum = 0;
const char *s = rindex( _clip->name(), '/' );
if ( ! s )
s = _clip->name();
for ( int i = strlen( s ); i--; )
sum += s[ i ];
while ( sum >> 8 )
sum = (sum & 0xFF) + (sum >> 8);
_color = (Fl_Color)sum;
/* _color = fl_color_average( FL_YELLOW, (Fl_Color)sum, 0.80 ); */
// _color = FL_YELLOW;
_box_color = FL_WHITE;
log_create();
}
int
Audio_Region::handle ( int m )
{
static int ox, oy;
static bool copied = false;
static nframes_t os;
if ( ! active_r() )
return 0;
// int X = Fl::event_x() - _track->x();
int X = Fl::event_x();
int Y = Fl::event_y();
int ret;
if ( Sequence_Region::handle( m ) )
return 1;
Logger _log( this );
//log_r->start();
switch ( m )
{
case FL_KEYBOARD:
{
if ( Fl::event_key() == FL_F + 3 )
{
nframes_t offset = x_to_offset( X );
if ( offset < length() )
_fade_in.length = offset;
DMESSAGE( "setting fade in length to %lu", _fade_in.length );
redraw();
return 1;
}
else if ( Fl::event_key() == FL_F + 4 )
{
long offset = length() - x_to_offset( X );
if ( offset > 0 )
_fade_out.length = offset;
DMESSAGE( "setting fade out length to %lu", _fade_in.length );
redraw();
return 1;
}
return 0;
}
case FL_PUSH:
{
/* splitting */
if ( Fl::event_shift() && ! Fl::event_ctrl() )
{
switch ( Fl::event_button() )
{
case 2:
{
/* split */
if ( ! copied )
{
Loggable::block_start();
Audio_Region *copy = new Audio_Region( *this );
trim( RIGHT, X );
copy->trim( LEFT, X );
sequence()->add( copy );
log_end();
Loggable::block_end();
return 0;
}
}
default:
return 0;
break;
}
return 1;
}
else
{
ox = x() - X;
oy = y() - Y;
/* for panning */
os = _r->offset;
/* normalization and selection */
if ( Fl::event_button2() )
{
if ( Fl::event_ctrl() )
normalize();
else
{
if ( Sequence_Widget::current() == this )
{
if ( selected() )
deselect();
else
select();
}
}
redraw();
return 1;
}
else if ( Fl::test_shortcut( FL_BUTTON3 ) && ! Fl::event_shift() )
{
/* context menu */
Fade::fade_type_e it = _fade_in.type;
Fade::fade_type_e ot = _fade_out.type;
Fl_Menu_Item menu[] =
{
{ "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 ) },
{ "Logarothmic", 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 },
{ 0 },
};
const Fl_Menu_Item *r = menu->popup( X, Y, "Audio_Region" );
if ( r )
{
if ( r > &menu[1] && r < &menu[6] )
_fade_in.type = (Fade::fade_type_e)(int)(r - &menu[2]);
else if ( r > &menu[7] && r < &menu[12] )
_fade_out.type = (Fade::fade_type_e)(int)(r - &menu[8]);
redraw();
}
return 0;
}
else
return Sequence_Region::handle( m );
}
break;
}
case FL_RELEASE:
{
Sequence_Region::handle( m );
copied = false;
return 1;
}
case FL_DRAG:
if ( ! _drag )
{
begin_drag( Drag( x() - X, y() - Y, x_to_offset( X ) ) );
_log.hold();
}
if ( Fl::event_button1() )
{
if ( Fl::event_state() & ( FL_SHIFT | FL_CTRL ) )
{
/* panning */
int d = (ox + X) - x();
long td = timeline->x_to_ts( d );
if ( td > 0 && os < (nframes_t)td )
_r->offset = 0;
else
_r->offset = os - td;
sequence()->redraw();
return 1;
}
}
ret = Sequence_Region::handle( m );
return ret | 1;
default:
return Sequence_Region::handle( m );
break;
}
return 0;
}
/** Draws the curve for a single fade. /X/ and /W/ repersent the
portion of the region covered by this draw, which may or may not
cover the fade in question. */
void
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 );
fl_color( fl_lighter( FL_BLACK ) );
fl_push_matrix();
if ( dir == Fade::In )
fl_translate( line_x(), dy );
else
{
fl_translate( line_x() + abs_w(), dy );
/* flip */
fl_scale( -1.0, 1.0 );
}
fl_scale( width, height );
if ( line )
fl_begin_line();
else
fl_begin_polygon();
fl_vertex( 0.0, 0.0 );
fl_vertex( 0.0, 1.0 );
// if ( draw_real_fade_curve )
{
nframes_t tsx = timeline->x_to_ts( 1 );
nframes_t ts = 0;
for ( int i = 0; i < width; ++i, ts += tsx )
fl_vertex( i / (float)width, 1.0f - fade.gain( ts / (float)fade.length ) );
}
fl_vertex( 1.0, 0.0 );
if ( line )
fl_end_line();
else
fl_end_polygon();
fl_pop_matrix();
}
struct Peaks_Redraw_Request {
Audio_Region *region;
nframes_t start;
nframes_t end;
Peaks_Redraw_Request ( Audio_Region *region, nframes_t start, nframes_t end ) : region( region ), start( start), end( end )
{
}
};
/* static wrapper */
void
Audio_Region::peaks_pending_cb ( void *v )
{
Peaks_Redraw_Request *r = (Peaks_Redraw_Request*)v;
r->region->peaks_pending_cb( r );
}
void
Audio_Region::peaks_pending_cb ( Peaks_Redraw_Request *r )
{
int npeaks = timeline->ts_to_x( r->end - r->start );
if ( _clip->peaks()->ready( r->start, npeaks, timeline->fpp() ) )
{
printf( "damaging from timeout\n" );
/* FIXME: only need to damage the affected area! */
timeline->damage( FL_DAMAGE_ALL, x(), y(), w(), h() );
delete r;
}
else
Fl::repeat_timeout( 0.1f, &Audio_Region::peaks_pending_cb, (void*)r );
}
void
Audio_Region::draw_box( void )
{
/* dirty hack to keep the box from flipping to vertical at small sizes */
fl_push_clip( x(), y(), w(), h() );
Fl_Color selection_color = _selection_color;
Fl_Color color = Audio_Region::inherit_track_color ? sequence()->track()->color() : _box_color;
color = fl_color_average( color, sequence()->color(), 0.75f );
if ( this == ((Audio_Sequence*)sequence())->capture() )
{
color = FL_RED;
}
else if ( ! active_r() )
{
color = fl_inactive( color );
selection_color = fl_inactive( selection_color );
}
if ( selected() )
fl_draw_box( fl_down( box() ), x() - 10, y(), w() + 50, h(), selection_color );
else
fl_draw_box( box(), x() - 10, y(), w() + 50, h(), color );
/* draw fades */
draw_fade( _fade_in, Fade::In, false, x(), w() );
draw_fade( _fade_out, Fade::Out, false, x(), w() );
fl_pop_clip();
}
/** Draw (part of) region. X, Y, W and H are the rectangle we're clipped to. */
void
Audio_Region::draw ( void )
{
/* intersect clip with region */
int X, Y, W, H;
fl_clip_box( x(), y(), w(), h(), X, Y, W, H );
if ( ! ( W > 0 && H > 0 ) )
/* no coverage */
return;
/* account for waveform outlines... */
X -= 2;
W += 4;
int OX = scroll_x();
int ox = timeline->ts_to_x( _r->start );
if ( ox > OX + sequence()->w() ||
ox < OX && ox + abs_w() < OX )
/* not in viewport */
return;
int rw = timeline->ts_to_x( _r->length );
/* calculate waveform offset due to scrolling */
nframes_t offset = 0;
if ( ox < OX )
{
offset = timeline->x_to_ts( OX - ox );
rw -= OX - ox;
}
rw = min( rw, sequence()->w() );
int rx = x();
fl_push_clip( rx, Y, rw, H );
/* get actual peak data */
int channels;
int peaks;
Peak *pbuf;
// const nframes_t start = _r->start + offset + timeline->x_to_ts( X - rx );
// nframes_t start = _r->start + offset;
nframes_t start = _r->offset + offset;
/* compensate for ??? */
if ( X - rx > 0 )
start += timeline->x_to_ts( X - rx );
const int peaks_needed = min( timeline->ts_to_x( _clip->length() - start ), W );
const nframes_t end = start + timeline->x_to_ts( peaks_needed );
if ( _clip->read_peaks( timeline->fpp(),
start,
end,
&peaks, &pbuf, &channels ) &&
peaks )
{
assert( pbuf );
/* draw fade curve outlines--this is only here because of crossfades */
draw_fade( _fade_in, Fade::In, true, X, W );
draw_fade( _fade_out, Fade::Out, true, X, W );
int ch = (h() - Fl::box_dh( box() )) / channels;
Waveform::scale( pbuf, peaks * channels, _scale );
for ( int i = 0; i < channels; ++i )
{
// Peak *pb = pbuf + (peaks * i);
/* int fw = timeline->ts_to_x( fade.length ); */
/* /\* if ( draw_fade_waveform ) *\/ */
/* for ( int j = min( fw, peaks ); j--; ) */
/* { */
/* const float g = fade.gain( j * timeline->fpp() ); */
/* pb[ j ].min *= g; */
/* pb[ j ].max *= g; */
/* } */
Waveform::draw( X,
(y() + Fl::box_dy( box() )) + (i * ch),
W,
ch,
pbuf + i, peaks, channels,
selected() ? fl_invert_color( _color ) : _color );
}
}
if ( peaks < peaks_needed )
{
/* couldn't read peaks--perhaps they're being generated. Try again later. */
Fl::add_timeout( 0.1f, &Audio_Region::peaks_pending_cb,
new Peaks_Redraw_Request( this, start + timeline->x_to_ts( peaks ), end ) );
}
timeline->draw_measure_lines( X, Y, W, H, _box_color );
/* fl_color( FL_BLACK ); */
/* fl_line( rx, Y, rx, Y + H ); */
/* fl_line( rx + rw - 1, Y, rx + rw - 1, Y + H ); */
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() );
/* if ( current() ) */
/* { */
/* /\* draw length bubble *\/ */
/* char pat[40]; */
/* snprintf( pat, sizeof( pat ), "%dm:%.1fs", (int)(length() / timeline->sample_rate()) / 60, (double)length() / timeline->sample_rate() ); */
/* draw_label( pat, (Fl_Align)(FL_ALIGN_INSIDE | FL_ALIGN_CENTER), FL_GREEN ); */
/* } */
fl_pop_clip();
}
void
Audio_Region::normalize ( void )
{
int peaks, channels;
Peak *pbuf;
if ( _clip->read_peaks( length(), offset(), offset() + length(), &peaks, &pbuf, &channels ) &&
peaks )
_scale = pbuf->normalization_factor();
}
/**********/
/* Engine */
/**********/
/** Apply a (portion of) fade from /start/ to /end/ assuming a
* buffer size of /nframes/. /start/ and /end/ are relative to the
* given buffer, and /start/ may be negative. */
void
Audio_Region::Fade::apply ( sample_t *buf, Audio_Region::Fade::fade_dir_e dir, long start, nframes_t end, nframes_t nframes ) const
{
// printf( "apply fade %s: start=%ld end=%lu\n", dir == Fade::Out ? "out" : "in", start, end );
if ( ! nframes )
return;
const nframes_t i = start > 0 ? start : 0;
const nframes_t e = end > nframes ? nframes : end;
assert( i < nframes );
const float inc = increment();
float fi = ( i - start ) / (float)length;
// buf += i;
buf = &buf[ i ];
nframes_t n = e - i;
assert( i + n <= nframes );
if ( dir == Fade::Out )
{
fi = 1.0f - fi;
for ( ; n--; fi -= inc )
*(buf++) *= gain( fi );
}
else
for ( ; n--; fi += inc )
*(buf++) *= gain( fi );
}
/* THREAD: IO */
/** read the overlapping part of /channel/ at /pos/ for /nframes/ of
this region into /buf/, where /pos/ is in timeline frames */
/* this runs in the diskstream thread. */
/* FIXME: it is far more efficient to read all the channels from a
multichannel source at once... But how should we handle the case of a
mismatch between the number of channels in this region's source and
the number of channels on the track/buffer this data is being read
for? Would it not be better to simply buffer and deinterlace the
frames in the Audio_File class instead, so that sequential requests
for different channels at the same position avoid hitting the disk
again? */
nframes_t
Audio_Region::read ( sample_t *buf, nframes_t pos, nframes_t nframes, int channel ) const
{
const Range r = _range;
/* do nothing if we aren't covered by this frame range */
if ( pos > r.start + r.length || pos + nframes < r.start )
return 0;
/* calculate offsets into file and sample buffer */
nframes_t sofs, ofs, cnt;
cnt = nframes;
if ( pos < r.start )
{
sofs = 0;
ofs = r.start - pos;
cnt -= ofs;
}
else
{
ofs = 0;
sofs = pos - r.start;
}
if ( ofs >= nframes )
return 0;
// const nframes_t start = ofs + r.start + sofs;
const nframes_t start = r.offset + sofs;
const nframes_t len = min( cnt, nframes - ofs );
const nframes_t end = start + len;
if ( len == 0 )
return 0;
/* now that we know how much and where to read, get on with it */
// printf( "reading region ofs = %lu, sofs = %lu, %lu-%lu\n", ofs, sofs, start, end );
cnt = _clip->read( buf + ofs, channel, start, end );
/* apply gain */
buffer_apply_gain( buf + ofs, cnt, _scale );
/* perform declicking if necessary */
/* FIXME: keep the declick defults someplace else */
Fade declick;
declick.length = 256;
declick.type = Fade::Linear;
{
Fade fade;
fade = declick < _fade_in ? _fade_in : declick;
/* do fade in if necessary */
if ( sofs < fade.length )
{
const long d = 0 - sofs;
assert( cnt <= nframes );
fade.apply( buf + ofs, Fade::In, d, d + fade.length, cnt );
}
fade = declick < _fade_out ? _fade_out : declick;
/* do fade out if necessary */
// if ( start + cnt + fade.length > r.end )
if ( start + fade.length > ( r.offset + r.length ) )
{
const nframes_t d = ( r.offset + r.length ) - start;
assert( cnt <= nframes );
fade.apply( buf, Fade::Out, cnt + (long)d - fade.length, cnt + d, cnt );
}
}
// printf( "read %lu frames\n", cnt );
return cnt;
}
/** prepare for capturing */
void
Audio_Region::prepare ( void )
{
log_start();
}
/* THREAD: IO */
/** write /nframes/ from /buf/ to source. /buf/ is interleaved and
must match the channel layout of the write source! */
nframes_t
Audio_Region::write ( nframes_t nframes )
{
_range.length += nframes;
/* FIXME: too much? */
// _track->damage( FL_DAMAGE_EXPOSE, x() + w(), y(), 10/* FIXME: guess */, h() );
if ( 0 == ( timeline->ts_to_x( _range.length ) % 20 ) )
{
nframes_t oldl = _clip->length();
/* get the new size. Remember, this is a read-only handle on the source--not the same
one being written to */
_clip->close();
_clip->open();
int W = timeline->ts_to_x( _clip->length() - oldl );
/* why - 1? */
if ( W )
{
++W;
Fl::lock();
sequence()->damage( FL_DAMAGE_ALL, x() + w() - W, y(), W, h() );
Fl::awake();
Fl::unlock();
}
}
return nframes;
}
/* THREAD: IO */
/** finalize region capture. Assumes that this *is* a captured region
and that no other regions refer to the same source */
bool
Audio_Region::finalize ( nframes_t frame )
{
_range.length = frame - _range.start;
log_end();
_clip->close();
_clip->open();
/* FIXME: should we attempt to truncate the file? */
redraw();
return true;
}
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