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freeswitch/libs/spandsp/tests/echo_monitor.cpp

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/*
* SpanDSP - a series of DSP components for telephony
*
* echo_monitor.cpp - Display echo canceller status, using the FLTK toolkit.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2004 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* 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; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: echo_monitor.cpp,v 1.13 2008/09/08 16:10:41 steveu Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if defined(HAVE_FL_FL_H) && defined(HAVE_FL_FL_CARTESIAN_H)
#define __STDC_LIMIT_MACROS
#include <inttypes.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#if defined(HAVE_FFTW3_H)
#include <fftw3.h>
#else
#include <fftw.h>
#endif
#include <FL/Fl.H>
#include <FL/Fl_Overlay_Window.H>
#include <FL/Fl_Light_Button.H>
#include <FL/Fl_Cartesian.H>
#include <FL/Fl_Audio_Meter.H>
#include <FL/fl_draw.H>
#include "spandsp.h"
#include "echo_monitor.h"
struct line_model_monitor_s
{
Fl_Double_Window *w;
Fl_Audio_Meter *audio_meter;
Fl_Group *c_spec;
Fl_Group *c_right;
Fl_Group *c_can;
Fl_Group *c_line_model;
Ca_Canvas *canvas_spec;
Ca_X_Axis *spec_freq;
Ca_Y_Axis *spec_amp;
Ca_Line *spec_re;
double spec_re_plot[2*512];
Ca_Canvas *canvas_can;
Ca_X_Axis *can_x;
Ca_Y_Axis *can_y;
Ca_Line *can_re;
double can_re_plot[512];
Ca_Canvas *canvas_line_model;
Ca_X_Axis *line_model_x;
Ca_Y_Axis *line_model_y;
Ca_Line *line_model_re;
double line_model_re_plot[512];
int in_ptr;
#if defined(HAVE_FFTW3_H)
double in[1024][2];
double out[1024][2];
#else
fftw_complex in[1024];
fftw_complex out[1024];
#endif
fftw_plan p;
};
static int skip = 0;
static struct line_model_monitor_s echo;
static struct line_model_monitor_s *s = &echo;
int echo_can_monitor_can_update(const int16_t *coeffs, int len)
{
int i;
float min;
float max;
if (s->can_re)
delete s->can_re;
s->canvas_can->current(s->canvas_can);
i = 0;
min = coeffs[i];
max = coeffs[i];
for (i = 0; i < len; i++)
{
s->can_re_plot[2*i] = i;
s->can_re_plot[2*i + 1] = coeffs[i];
if (min > coeffs[i])
min = coeffs[i];
if (max < coeffs[i])
max = coeffs[i];
}
s->can_y->maximum((max == min) ? max + 0.2 : max);
s->can_y->minimum(min);
s->can_re = new Ca_Line(len, s->can_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
if (++skip >= 100)
{
skip = 0;
Fl::check();
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int echo_can_monitor_line_model_update(const int32_t *coeffs, int len)
{
int i;
float min;
float max;
if (s->line_model_re)
delete s->line_model_re;
s->canvas_line_model->current(s->canvas_line_model);
i = 0;
min = coeffs[i];
max = coeffs[i];
for (i = 0; i < len; i++)
{
s->line_model_re_plot[2*i] = i;
s->line_model_re_plot[2*i + 1] = coeffs[i];
if (min > coeffs[i])
min = coeffs[i];
if (max < coeffs[i])
max = coeffs[i];
}
s->line_model_y->maximum((max == min) ? max + 0.2 : max);
s->line_model_y->minimum(min);
s->line_model_re = new Ca_Line(len, s->line_model_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
if (++skip >= 100)
{
skip = 0;
Fl::check();
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int echo_can_monitor_line_spectrum_update(const int16_t amp[], int len)
{
int i;
int x;
for (i = 0; i < len; i++)
s->audio_meter->sample(amp[i]/32768.0);
if (s->in_ptr + len < 512)
{
/* Just add this fragment to the buffer. */
for (i = 0; i < len; i++)
#if defined(HAVE_FFTW3_H)
s->in[s->in_ptr + i][0] = amp[i];
#else
s->in[s->in_ptr + i].re = amp[i];
#endif
s->in_ptr += len;
return 0;
}
if (len >= 512)
{
/* We have enough for a whole block. Use the last 512 samples
we have. */
x = len - 512;
for (i = 0; i < 512; i++)
#if defined(HAVE_FFTW3_H)
s->in[i][0] = amp[x + i];
#else
s->in[i].re = amp[x + i];
#endif
}
else
{
/* We want the last 512 samples. */
x = 512 - len;
for (i = 0; i < x; i++)
#if defined(HAVE_FFTW3_H)
s->in[i][0] = s->in[s->in_ptr - x + i][0];
#else
s->in[i].re = s->in[s->in_ptr - x + i].re;
#endif
for (i = x; i < 512; i++)
#if defined(HAVE_FFTW3_H)
s->in[i][0] = amp[i - x];
#else
s->in[i].re = amp[i - x];
#endif
}
s->in_ptr = 0;
#if defined(HAVE_FFTW3_H)
fftw_execute(s->p);
#else
fftw_one(s->p, s->in, s->out);
#endif
if (s->spec_re)
delete s->spec_re;
s->canvas_spec->current(s->canvas_spec);
for (i = 0; i < 512; i++)
{
s->spec_re_plot[2*i] = i*4000.0/512.0;
#if defined(HAVE_FFTW3_H)
s->spec_re_plot[2*i + 1] = 20.0*log10(sqrt(s->out[i][0]*s->out[i][0] + s->out[i][1]*s->out[i][1])/(256.0*32768)) + 3.14;
#else
s->spec_re_plot[2*i + 1] = 20.0*log10(sqrt(s->out[i].re*s->out[i].re + s->out[i].im*s->out[i].im)/(256.0*32768)) + 3.14;
#endif
}
s->spec_re = new Ca_Line(512, s->spec_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
Fl::check();
return 0;
}
/*- End of function --------------------------------------------------------*/
int start_echo_can_monitor(int len)
{
char buf[132 + 1];
float x;
float y;
int i;
s->w = new Fl_Double_Window(850, 400, "Echo canceller monitor");
s->c_spec = new Fl_Group(0, 0, 380, 400);
s->c_spec->box(FL_DOWN_BOX);
s->c_spec->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
s->canvas_spec = new Ca_Canvas(60, 30, 300, 300, "Spectrum");
s->canvas_spec->box(FL_PLASTIC_DOWN_BOX);
s->canvas_spec->color(7);
s->canvas_spec->align(FL_ALIGN_TOP);
s->canvas_spec->border(15);
s->spec_freq = new Ca_X_Axis(65, 330, 290, 30, "Freq (Hz)");
s->spec_freq->align(FL_ALIGN_BOTTOM);
s->spec_freq->minimum(0);
s->spec_freq->maximum(4000);
s->spec_freq->label_format("%g");
s->spec_freq->minor_grid_color(fl_gray_ramp(20));
s->spec_freq->major_grid_color(fl_gray_ramp(15));
s->spec_freq->label_grid_color(fl_gray_ramp(10));
s->spec_freq->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->spec_freq->minor_grid_style(FL_DOT);
s->spec_freq->major_step(5);
s->spec_freq->label_step(1);
s->spec_freq->axis_color(FL_BLACK);
s->spec_freq->axis_align(CA_BOTTOM | CA_LINE);
s->spec_amp = new Ca_Y_Axis(20, 35, 40, 290, "Amp (dBmO)");
s->spec_amp->align(FL_ALIGN_LEFT);
s->spec_amp->minimum(-80.0);
s->spec_amp->maximum(10.0);
s->spec_amp->minor_grid_color(fl_gray_ramp(20));
s->spec_amp->major_grid_color(fl_gray_ramp(15));
s->spec_amp->label_grid_color(fl_gray_ramp(10));
//s->spec_amp->grid_visible(CA_MINOR_TICK | CA_MAJOR_TICK | CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->spec_amp->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->spec_amp->minor_grid_style(FL_DOT);
s->spec_amp->major_step(5);
s->spec_amp->label_step(1);
s->spec_amp->axis_color(FL_BLACK);
s->spec_amp->current();
s->spec_re = NULL;
s->c_spec->end();
s->c_right = new Fl_Group(440, 0, 465, 405);
s->c_can = new Fl_Group(380, 0, 415, 200);
s->c_can->box(FL_DOWN_BOX);
s->c_can->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
s->c_can->current();
s->canvas_can = new Ca_Canvas(460, 35, 300, 100, "Canceller coefficients");
s->canvas_can->box(FL_PLASTIC_DOWN_BOX);
s->canvas_can->color(7);
s->canvas_can->align(FL_ALIGN_TOP);
Fl_Group::current()->resizable(s->canvas_can);
s->canvas_can->border(15);
s->can_x = new Ca_X_Axis(465, 135, 290, 30, "Tap");
s->can_x->align(FL_ALIGN_BOTTOM);
s->can_x->minimum(0.0);
s->can_x->maximum((float) len);
s->can_x->label_format("%g");
s->can_x->minor_grid_color(fl_gray_ramp(20));
s->can_x->major_grid_color(fl_gray_ramp(15));
s->can_x->label_grid_color(fl_gray_ramp(10));
s->can_x->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->can_x->minor_grid_style(FL_DOT);
s->can_x->major_step(5);
s->can_x->label_step(1);
s->can_x->axis_align(CA_BOTTOM | CA_LINE);
s->can_x->axis_color(FL_BLACK);
s->can_x->current();
s->can_y = new Ca_Y_Axis(420, 40, 40, 90, "Amp");
s->can_y->align(FL_ALIGN_LEFT);
s->can_y->minimum(-0.1);
s->can_y->maximum(0.1);
s->can_y->minor_grid_color(fl_gray_ramp(20));
s->can_y->major_grid_color(fl_gray_ramp(15));
s->can_y->label_grid_color(fl_gray_ramp(10));
s->can_y->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->can_y->minor_grid_style(FL_DOT);
s->can_y->major_step(5);
s->can_y->label_step(1);
s->can_y->axis_color(FL_BLACK);
s->can_y->current();
s->c_can->end();
s->can_re = NULL;
s->c_line_model = new Fl_Group(380, 200, 415, 200);
s->c_line_model->box(FL_DOWN_BOX);
s->c_line_model->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
s->c_line_model->current();
s->canvas_line_model = new Ca_Canvas(460, 235, 300, 100, "Line impulse response model");
s->canvas_line_model->box(FL_PLASTIC_DOWN_BOX);
s->canvas_line_model->color(7);
s->canvas_line_model->align(FL_ALIGN_TOP);
Fl_Group::current()->resizable(s->canvas_line_model);
s->canvas_line_model->border(15);
s->line_model_x = new Ca_X_Axis(465, 335, 290, 30, "Tap");
s->line_model_x->align(FL_ALIGN_BOTTOM);
s->line_model_x->minimum(0.0);
s->line_model_x->maximum((float) len);
s->line_model_x->label_format("%g");
s->line_model_x->minor_grid_color(fl_gray_ramp(20));
s->line_model_x->major_grid_color(fl_gray_ramp(15));
s->line_model_x->label_grid_color(fl_gray_ramp(10));
s->line_model_x->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->line_model_x->minor_grid_style(FL_DOT);
s->line_model_x->major_step(5);
s->line_model_x->label_step(1);
s->line_model_x->axis_align(CA_BOTTOM | CA_LINE);
s->line_model_x->axis_color(FL_BLACK);
s->line_model_x->current();
s->line_model_y = new Ca_Y_Axis(420, 240, 40, 90, "Amp");
s->line_model_y->align(FL_ALIGN_LEFT);
s->line_model_y->minimum(-0.1);
s->line_model_y->maximum(0.1);
s->line_model_y->minor_grid_color(fl_gray_ramp(20));
s->line_model_y->major_grid_color(fl_gray_ramp(15));
s->line_model_y->label_grid_color(fl_gray_ramp(10));
s->line_model_y->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
s->line_model_y->minor_grid_style(FL_DOT);
s->line_model_y->major_step(5);
s->line_model_y->label_step(1);
s->line_model_y->axis_color(FL_BLACK);
s->line_model_y->current();
s->c_line_model->end();
s->line_model_re = NULL;
s->audio_meter = new Fl_Audio_Meter(810, 40, 10, 250, "");
s->audio_meter->box(FL_PLASTIC_UP_BOX);
s->audio_meter->type(FL_VERT_AUDIO_METER);
s->c_right->end();
Fl_Group::current()->resizable(s->c_right);
s->w->end();
s->w->show();
#if defined(HAVE_FFTW3_H)
s->p = fftw_plan_dft_1d(1024, s->in, s->out, FFTW_BACKWARD, FFTW_ESTIMATE);
for (i = 0; i < 1024; i++)
{
s->in[i][0] = 0.0;
s->in[i][1] = 0.0;
}
#else
s->p = fftw_create_plan(1024, FFTW_BACKWARD, FFTW_ESTIMATE);
for (i = 0; i < 1024; i++)
{
s->in[i].re = 0.0;
s->in[i].im = 0.0;
}
#endif
s->in_ptr = 0;
Fl::check();
return 0;
}
/*- End of function --------------------------------------------------------*/
void echo_can_monitor_wait_to_end(void)
{
fd_set rfds;
int res;
struct timeval tv;
fprintf(stderr, "Processing complete. Press the <enter> key to end\n");
do
{
usleep(100000);
Fl::check();
FD_ZERO(&rfds);
FD_SET(0, &rfds);
tv.tv_usec = 100000;
tv.tv_sec = 0;
res = select(1, &rfds, NULL, NULL, &tv);
}
while (res <= 0);
}
/*- End of function --------------------------------------------------------*/
void echo_can_monitor_update_display(void)
{
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
Fl::check();
}
/*- End of function --------------------------------------------------------*/
#endif
/*- End of file ------------------------------------------------------------*/
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