150 lines
4.6 KiB
C
150 lines
4.6 KiB
C
|
|
/*******************************************************************************/
|
|
/* 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 <stdio.h>
|
|
|
|
#include <FL/Enumerations.H>
|
|
#include <FL/Fl.H>
|
|
#include <FL/fl_draw.H>
|
|
|
|
#include "Timeline.H"
|
|
#include "Audio_File.H"
|
|
|
|
#include "Waveform.H"
|
|
|
|
#include <math.h>
|
|
|
|
|
|
bool Waveform::fill = true;
|
|
bool Waveform::outline = true;
|
|
bool Waveform::vary_color = true;
|
|
bool Waveform::logarithmic = true;
|
|
|
|
/* TODO: split the variations into separate functions. eg, plain,
|
|
* outlined, filled, polygonal, rectified. */
|
|
|
|
/* TODO: this should be made completely independent of /timeline/ so that it can be used for other purposes (file previews) */
|
|
|
|
/** draw a portion of /clip/'s waveform. coordinates are the portion to draw */
|
|
void
|
|
Waveform::draw ( int ox, int X, int Y, int W, int H, Audio_File *_clip, int channel, float fpp, nframes_t _start, nframes_t _end, float _scale, Fl_Color color )
|
|
{
|
|
fl_push_clip( X, Y, W, H );
|
|
|
|
int j;
|
|
|
|
// int start = timeline->ts_to_x( _start );
|
|
int start = timeline->ts_to_x( _start ) + (X - ox);
|
|
|
|
const Peaks *pk = _clip->peaks( channel );
|
|
|
|
_start = timeline->x_to_ts( start );
|
|
|
|
pk->fill_buffer( fpp, _start, _start + timeline->x_to_ts( W ) );
|
|
|
|
const int halfheight = H / 2;
|
|
const int mid = Y + halfheight;
|
|
|
|
if ( Waveform::fill )
|
|
{
|
|
j = start;
|
|
for ( int x = X; x <= X + W; ++x, ++j )
|
|
{
|
|
// Peak p = (*pk)[ j ];
|
|
|
|
Peak p = pk->peak( timeline->x_to_ts( j ), timeline->x_to_ts( j + 1 ) );
|
|
|
|
p.max *= _scale;
|
|
p.min *= _scale;
|
|
|
|
const float diff = fabs( p.max - p.min );
|
|
|
|
/* if ( Waveform::logarithmic ) */
|
|
/* { */
|
|
/* p.max = 10.0f * log10f( p.max ); */
|
|
/* p.min = 10.0f * log10f( p.min ); */
|
|
/* } */
|
|
|
|
if ( diff > 2.0f )
|
|
fl_color( FL_RED );
|
|
else
|
|
if ( Waveform::vary_color )
|
|
fl_color( fl_color_average( FL_WHITE, color, diff / 2.0f ) );
|
|
else
|
|
fl_color( color );
|
|
|
|
const int ty = mid + (halfheight * p.min);
|
|
const int by = mid + (halfheight * p.max );
|
|
fl_line( x, ty, x, by );
|
|
|
|
/* if ( outline ) */
|
|
/* { */
|
|
/* fl_color( fl_darker( fl_darker( color ) ) ); */
|
|
/* fl_line( x, ty - 2, x, ty ); */
|
|
/* fl_line( x, by + 2, x, by ); */
|
|
/* } */
|
|
|
|
}
|
|
}
|
|
|
|
|
|
if ( Waveform::outline )
|
|
{
|
|
|
|
fl_color( fl_darker( fl_darker( color ) ) );
|
|
|
|
fl_line_style( FL_SOLID, 2 );
|
|
|
|
fl_begin_line();
|
|
|
|
j = start;
|
|
for ( int x = X; x <= X + W; ++x, ++j )
|
|
{
|
|
// Peak p = (*pk)[ j ];
|
|
Peak p = pk->peak( timeline->x_to_ts( j ), timeline->x_to_ts( j + 1 ) );
|
|
|
|
p.min *= _scale;
|
|
|
|
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.min ));
|
|
}
|
|
|
|
fl_end_line();
|
|
|
|
fl_begin_line();
|
|
|
|
j = start;
|
|
for ( int x = X; x <= X + W; ++x, ++j )
|
|
{
|
|
// Peak p = (*pk)[ j ];
|
|
Peak p = pk->peak( timeline->x_to_ts( j ), timeline->x_to_ts( j + 1 ) );
|
|
|
|
p.max *= _scale;
|
|
|
|
fl_vertex( x, Y + (H / 2) + ((float)H / 2 * p.max ));
|
|
}
|
|
|
|
fl_end_line();
|
|
|
|
fl_line_style( FL_SOLID, 0 );
|
|
|
|
}
|
|
|
|
fl_pop_clip();
|
|
}
|