826 lines
22 KiB
C
826 lines
22 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include <FL/fl_draw.H>
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#include <FL/Fl.H>
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#include <FL/Fl_Widget.H>
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#include <FL/Fl_Menu_Item.H>
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#include <FL/fl_show_colormap.H>
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#include "Sequence.H"
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#include "Audio_Region.H"
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#include "Timeline.H"
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#include "Waveform.H"
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#include "Audio_Sequence.H"
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#include "Track.H"
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#include "Engine/Audio_File.H"
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#include "Transport.H"
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#include "const.h"
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#include "debug.h"
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#include <algorithm>
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using std::min;
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using std::max;
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/* defined in timeline.C */
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extern void draw_full_arrow_symbol ( Fl_Color color );
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extern Timeline *timeline;
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extern Transport *transport;
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bool Audio_Region::inherit_track_color = true;
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bool Audio_Region::show_box = true;
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Fl_Boxtype Audio_Region::_box = FL_UP_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 )
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{
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unsigned char r, g, b;
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Fl::get_color( c, r, g, b );
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return fl_rgb_color( 255 - r, 255 - g, 255 - b );
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}
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void
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Audio_Region::get ( Log_Entry &e ) const
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{
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e.add( ":source", _clip ? _clip->name() : "" );
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e.add( ":gain", _scale );
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e.add( ":fade-in-type", _fade_in.type );
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e.add( ":fade-in-duration", _fade_in.length );
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e.add( ":fade-out-type", _fade_out.type );
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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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}
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void
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Audio_Region::set ( Log_Entry &e )
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{
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for ( int i = 0; i < e.size(); ++i )
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{
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const char *s, *v;
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e.get( i, &s, &v );
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if ( ! strcmp( s, ":gain" ) )
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_scale = atof( v );
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else if ( ! strcmp( s, ":color" ) )
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_box_color = (Fl_Color)atoi( v );
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else if ( ! strcmp( s, ":fade-in-type" ) )
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_fade_in.type = (Fade::fade_type_e)atoi( v );
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else if ( ! strcmp( s, ":fade-in-duration" ) )
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_fade_in.length = atoll( v );
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else if ( ! strcmp( s, ":fade-out-type" ) )
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_fade_out.type = (Fade::fade_type_e)atoi( v );
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else if ( ! strcmp( s, ":fade-out-duration" ) )
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_fade_out.length = atoll( v );
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else if ( ! strcmp( s, ":offset" ) )
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_r->offset = atoll( v );
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else if ( ! strcmp( s, ":loop" ) )
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_loop = atoll( v );
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else if ( ! strcmp( s, ":source" ) )
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{
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if ( ! ( _clip = Audio_File::from_file( v ) ) )
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{
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printf( "Grave error: could not open source \"%s\"\n", v );
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}
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}
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}
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Sequence_Region::set( e );
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}
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void
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Audio_Region::init ( void )
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{
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_loop = 0;
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_sequence = NULL;
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_scale = 1.0f;
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_clip = NULL;
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_box_color = FL_CYAN;
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_color = FL_BLUE;
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_fade_in.length = 256;
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_fade_in.type = Fade::Sigmoid;
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_fade_out = _fade_in;
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}
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/* copy constructor */
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Audio_Region::Audio_Region ( const Audio_Region & rhs ) : Sequence_Region( rhs )
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{
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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;
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_fade_in = rhs._fade_in;
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_fade_out = rhs._fade_out;
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_loop = rhs._loop;
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log_create();
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}
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/* */
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Audio_Region::Audio_Region ( Audio_File *c )
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{
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init();
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_clip = c;
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_r->length = _clip->length();
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log_create();
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}
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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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{
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init();
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_clip = c;
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_sequence = t;
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_r->offset = 0;
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_r->start = o;
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_r->length = _clip->length();
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sequence()->add( this );
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int sum = 0;
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const char *s = rindex( _clip->name(), '/' );
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if ( ! s )
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s = _clip->name();
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for ( int i = strlen( s ); i--; )
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sum += s[ i ];
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while ( sum >> 8 )
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sum = (sum & 0xFF) + (sum >> 8);
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_color = (Fl_Color)sum;
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/* _color = fl_color_average( FL_YELLOW, (Fl_Color)sum, 0.80 ); */
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// _color = FL_YELLOW;
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_box_color = FL_WHITE;
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log_create();
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}
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Audio_Region::~Audio_Region ( )
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{
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log_destroy();
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_clip->release();
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}
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void
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Audio_Region::menu_cb ( Fl_Widget *w, void *v )
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{
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((Audio_Region*)v)->menu_cb( (Fl_Menu_*) w );
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}
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void
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Audio_Region::menu_cb ( const Fl_Menu_ *m )
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{
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char picked[256];
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m->item_pathname( picked, sizeof( picked ) );
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Logger log( this );
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if ( ! strcmp( picked, "Fade/In/Linear" ) )
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_fade_in.type = Fade::Linear;
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else if ( ! strcmp( picked, "Fade/In/Sigmoid" ) )
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_fade_in.type = Fade::Sigmoid;
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else if ( ! strcmp( picked, "Fade/In/Logarithmic" ) )
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_fade_in.type = Fade::Logarithmic;
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else if ( ! strcmp( picked, "Fade/In/Parabolic" ) )
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_fade_in.type = Fade::Parabolic;
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else if ( ! strcmp( picked, "Fade/Out/Linear" ) )
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_fade_out.type = Fade::Linear;
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else if ( ! strcmp( picked, "Fade/Out/Sigmoid" ) )
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_fade_out.type = Fade::Sigmoid;
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else if ( ! strcmp( picked, "Fade/Out/Logarithmic" ) )
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_fade_out.type = Fade::Logarithmic;
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else if ( ! strcmp( picked, "Fade/Out/Parabolic" ) )
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_fade_out.type = Fade::Parabolic;
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else if ( ! strcmp( picked, "/Color" ) )
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box_color( fl_show_colormap( box_color() ) );
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else if ( ! strcmp( picked, "/Split at mouse" ) )
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{
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Loggable::block_start();
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split( timeline->x_to_offset( Fl::event_x() ) );
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log_end();
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Loggable::block_end();
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log_start();
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}
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else if ( ! strcmp( picked, "/Crop to range" ) )
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{
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trim_left( timeline->range_start() );
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trim_right( timeline->range_end() );
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}
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else if ( ! strcmp( picked, "/Fade in to mouse" ) )
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{
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nframes_t offset = x_to_offset( Fl::event_x() );
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if ( offset < length() )
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_fade_in.length = offset;
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DMESSAGE( "set fade in duration" );
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}
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else if ( ! strcmp( picked, "/Fade out to mouse" ) )
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{
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long offset = length() - x_to_offset( Fl::event_x() );
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if ( offset > 0 )
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_fade_out.length = offset;
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}
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else if ( ! strcmp( picked, "/Loop point to mouse" ) )
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{
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nframes_t offset = x_to_offset( Fl::event_x() );
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if ( offset > 0 )
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{
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nframes_t f = offset + _r->start;
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if ( timeline->nearest_line( &f, false ) )
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_loop = f - _r->start;
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else
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_loop = offset;
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}
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}
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else if ( ! strcmp( picked, "/Clear loop point" ) )
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_loop = 0;
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else if ( ! strcmp( picked, "/Normalize" ) )
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normalize();
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else if ( ! strcmp( picked, "/Denormalize" ) )
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_scale = 1.0;
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else if ( ! strcmp( picked, "/Range from" ) )
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timeline->range( start(), length() );
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else if ( ! strcmp( picked, "/Remove" ) )
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remove();
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else
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FATAL( "Unknown menu choice \"%s\"", picked );
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redraw();
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}
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#include "FL/test_press.H"
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#include "FL/menu_popup.H"
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/** build the context menu for this region */
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Fl_Menu_Button &
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Audio_Region::menu ( void )
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{
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static Fl_Menu_Button m( 0, 0, 0, 0, "Region" );
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Fade::fade_type_e it = _fade_in.type;
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Fade::fade_type_e ot = _fade_out.type;
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Fl_Menu_Item items[] =
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{
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{ "Fade", 0, 0, 0, FL_SUBMENU },
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{ "In", 0, 0, 0, FL_SUBMENU },
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{ "Linear", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Linear ? FL_MENU_VALUE : 0 ) },
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{ "Sigmoid", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Sigmoid ? FL_MENU_VALUE : 0 ) },
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{ "Logarithmic", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Logarithmic ? FL_MENU_VALUE : 0 ) },
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{ "Parabolic", 0, 0, 0, FL_MENU_RADIO | ( it == Fade::Parabolic ? FL_MENU_VALUE : 0 ) },
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{ 0 },
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{ "Out", 0, 0, 0, FL_SUBMENU },
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{ "Linear", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Linear ? FL_MENU_VALUE : 0 ) },
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{ "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 ) },
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{ "Parabolic", 0, 0, 0, FL_MENU_RADIO | ( ot == Fade::Parabolic ? FL_MENU_VALUE : 0 ) },
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{ 0 },
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{ 0 },
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{ "Color", 0, 0, 0, inherit_track_color ? FL_MENU_INACTIVE : 0 },
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{ "Split at mouse", 's', 0, 0 },
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{ "Crop to range", 'c', 0, 0 },
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{ "Fade in to mouse", FL_F + 3, 0, 0 },
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{ "Fade out to mouse", FL_F + 4, 0, 0 },
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{ "Loop point to mouse", 'l', 0, 0 },
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{ "Clear loop point", FL_SHIFT + 'l', 0, 0, 0 == _loop ? FL_MENU_INACTIVE : 0 },
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{ "Normalize", 'n', 0, 0 },
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{ "Denormalize", FL_SHIFT + 'n', 0, 0, 1.0 == _scale ? FL_MENU_INACTIVE : 0 },
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{ "Range from", FL_CTRL + 'r', 0, 0 },
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{ "Remove", 0, 0, 0 },
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{ 0 },
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};
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menu_set_callback( items, &Audio_Region::menu_cb, (void*)this );
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m.copy( items, (void*)this );
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return m;
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}
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/** 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
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cover the fade in question. */
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void
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Audio_Region::draw_fade ( const Fade &fade, Fade::fade_dir_e dir, bool line, int X, int W )
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{
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const int dy = y() + Fl::box_dy( box() );
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const int dh = h() - Fl::box_dh( box() );
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const int height = dh;
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const int width = timeline->ts_to_x( fade.length );
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fl_push_matrix();
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if ( dir == Fade::In )
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fl_translate( line_x(), dy );
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else
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{
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fl_translate( line_x() + abs_w(), dy );
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/* flip */
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fl_scale( -1.0, 1.0 );
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}
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fl_scale( width, height );
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if ( line )
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fl_begin_line();
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else
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fl_begin_polygon();
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fl_vertex( 0.0, 0.0 );
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fl_vertex( 0.0, 1.0 );
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// if ( draw_real_fade_curve )
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{
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nframes_t tsx = timeline->x_to_ts( 1 );
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nframes_t ts = 0;
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for ( int i = 0; i < width; ++i, ts += tsx )
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fl_vertex( i / (float)width, 1.0f - fade.gain( ts / (float)fade.length ) );
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}
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fl_vertex( 1.0, 0.0 );
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if ( line )
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fl_end_line();
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else
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fl_end_polygon();
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fl_pop_matrix();
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}
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void
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Audio_Region::draw_box( void )
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{
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/* dirty hack to keep the box from flipping to vertical at small sizes */
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fl_push_clip( x(), y(), w(), h() );
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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 ( this == ((Audio_Sequence*)sequence())->capture_region() )
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{
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color = FL_RED;
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}
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else if ( ! active_r() )
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{
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color = fl_inactive( color );
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selection_color = fl_inactive( selection_color );
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}
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Fl_Boxtype b;
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Fl_Color c = color;
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if ( Audio_Region::show_box )
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{
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b = box();
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}
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else
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{
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b = FL_DOWN_FRAME;
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}
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if ( selected() )
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fl_draw_box( fl_down( b ), x() - ( h() >> 1 ), y(), w() + ( h() >> 1 ) + 50, h(), selection_color );
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else
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fl_draw_box( b, x() - ( h() >> 1 ), y(), w() + ( h() >> 1 ) + 50, h(), c );
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|
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/* used to draw fades here */
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/* draw fades */
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fl_pop_clip();
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}
|
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|
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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 */
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||
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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 ) )
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/* no coverage */
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return;
|
||
|
||
if ( start() > timeline->xoffset + timeline->x_to_ts( sequence()->w() ) ||
|
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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 );
|
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|
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/* account for waveform outlines... */
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X -= 2;
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W += 4;
|
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|
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Fl_Color c = selected() ? fl_invert_color( _color ) : _color;
|
||
|
||
/* start with region length... */
|
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// int rw = timeline->ts_to_x( min( length(), timeline->x_to_ts( sequence()->w() ) ) );
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||
int rw = W;
|
||
|
||
/* calculate waveform offset due to scrolling */
|
||
nframes_t offset = 0;
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||
if ( start() < timeline->xoffset )
|
||
{
|
||
offset = timeline->xoffset - start();
|
||
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||
// rw -= timeline->ts_to_x( offset );
|
||
}
|
||
|
||
/* DMESSAGE( "rw = %d", rw ); */
|
||
|
||
const int rx = x();
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||
|
||
/* fl_color( FL_RED ); */
|
||
/* fl_line( rx + rw, y(), rx + rw, y() + h() ); */
|
||
|
||
{
|
||
Fl_Color c = fl_color_average( FL_DARK1,
|
||
Audio_Region::inherit_track_color ? sequence()->track()->color() : _box_color,
|
||
0.50f );
|
||
|
||
fl_color( fl_color_add_alpha( c, 127 ) );
|
||
|
||
draw_fade( _fade_in, Fade::In, false, W, W );
|
||
draw_fade( _fade_out, Fade::Out, false, X, W );
|
||
}
|
||
|
||
int xo = 0;
|
||
|
||
nframes_t ostart = 0, oend = 0;
|
||
|
||
const int total_peaks_needed = rw;
|
||
|
||
/* compensate for scrolling */
|
||
if ( X - rx > 0 )
|
||
offset += timeline->x_to_ts( X - rx );
|
||
|
||
// DMESSAGE( "Drawing audio region.");
|
||
|
||
do {
|
||
|
||
int channels;
|
||
int peaks;
|
||
Peak *pbuf;
|
||
|
||
nframes_t start = _r->offset;
|
||
|
||
int loop_peaks_needed = _loop ? timeline->ts_to_x( _loop ) : timeline->ts_to_x( _clip->length() );
|
||
|
||
if ( this == ((Audio_Sequence*)sequence())->capture_region() )
|
||
{
|
||
loop_peaks_needed = timeline->ts_to_x( _range.length );
|
||
c = FL_BLACK;
|
||
}
|
||
|
||
if ( ! loop_peaks_needed )
|
||
break;
|
||
|
||
if ( ! xo ) /* first loop... */
|
||
{
|
||
if ( _loop )
|
||
start += offset % _loop;
|
||
else
|
||
start += offset;
|
||
|
||
/* DMESSAGE( "offset = %lu", (unsigned long) offset ); */
|
||
/* DMESSAGE( "loop peaks needed = %d", loop_peaks_needed ); */
|
||
|
||
loop_peaks_needed -= timeline->ts_to_x( offset % timeline->x_to_ts( loop_peaks_needed ) );
|
||
|
||
loop_peaks_needed = min( loop_peaks_needed, total_peaks_needed );
|
||
|
||
/* DMESSAGE( "loop peaks needed = %d", loop_peaks_needed ); */
|
||
|
||
assert( loop_peaks_needed >= 0 );
|
||
|
||
if ( _loop && offset < _loop )
|
||
{
|
||
const int x = timeline->ts_to_x( _loop - offset );
|
||
|
||
/* FIXME: is there no way to draw these symbols direclty? */
|
||
fl_color( FL_WHITE );
|
||
|
||
fl_push_matrix();
|
||
|
||
fl_translate( X + x + 2, y() + h() - 14 );
|
||
fl_scale( - 16, 8 );
|
||
|
||
draw_full_arrow_symbol( FL_BLACK );
|
||
|
||
fl_pop_matrix();
|
||
}
|
||
}
|
||
|
||
if ( xo + loop_peaks_needed > total_peaks_needed )
|
||
{
|
||
loop_peaks_needed -= ( xo + loop_peaks_needed ) - total_peaks_needed;
|
||
}
|
||
|
||
if ( 0 == loop_peaks_needed )
|
||
break;
|
||
|
||
const nframes_t end = start + timeline->x_to_ts( loop_peaks_needed );
|
||
|
||
if ( start != ostart || end != oend )
|
||
{
|
||
if ( _clip->read_peaks( timeline->fpp(),
|
||
start,
|
||
end,
|
||
&peaks, &pbuf, &channels ) )
|
||
{
|
||
Waveform::scale( pbuf, peaks * channels, _scale );
|
||
|
||
ostart = start;
|
||
oend = end;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
// DMESSAGE( "using cached peaks" );
|
||
}
|
||
|
||
Fl_Color c = _color;
|
||
|
||
|
||
// c = fl_color_average( FL_BLACK, FL_RED, 0.20 );
|
||
|
||
if ( peaks && pbuf )
|
||
{
|
||
int ch = (h() - Fl::box_dh( box() )) / channels;
|
||
|
||
|
||
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 );
|
||
}
|
||
}
|
||
|
||
if ( peaks < loop_peaks_needed )
|
||
{
|
||
// DMESSAGE( "Peak read came up %lu peaks short", (unsigned long) loop_peaks_needed - peaks );
|
||
}
|
||
|
||
xo += loop_peaks_needed;
|
||
|
||
}
|
||
while ( _loop && xo < W );
|
||
|
||
timeline->draw_measure_lines( X, Y, W, H );
|
||
|
||
/* 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();
|
||
|
||
}
|
||
|
||
/** 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 );
|
||
|
||
_fade_in.length = old_fade_in;
|
||
_fade_out.length = 256;
|
||
|
||
Sequence_Region::split( copy, where );
|
||
}
|
||
|
||
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_KEYBOARD:
|
||
return menu().test_shortcut() != 0;
|
||
case FL_ENTER:
|
||
return Sequence_Region::handle( m );
|
||
case FL_LEAVE:
|
||
return Sequence_Region::handle( m );
|
||
case FL_PUSH:
|
||
{
|
||
/* splitting */
|
||
if ( test_press( FL_BUTTON2 | FL_SHIFT ) )
|
||
{
|
||
/* split */
|
||
if ( ! copied )
|
||
{
|
||
Loggable::block_start();
|
||
|
||
split( timeline->x_to_offset( X ) );
|
||
|
||
log_end();
|
||
|
||
Loggable::block_end();
|
||
|
||
log_start();
|
||
}
|
||
|
||
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:
|
||
if ( ! _drag )
|
||
{
|
||
begin_drag( Drag( x() - X, y() - Y, x_to_offset( X ) ) );
|
||
_log.hold();
|
||
}
|
||
|
||
if ( test_press( FL_BUTTON1 | 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;
|
||
|
||
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();
|
||
}
|
||
|
||
/** set the amplitude scaling for this region from the normalization
|
||
* factor for the range of samples represented by this region */
|
||
void
|
||
Audio_Region::normalize ( void )
|
||
{
|
||
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();
|
||
}
|