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comparison spandsp-0.0.3/spandsp-0.0.3/tests/line_model_monitor.cpp @ 5:f762bf195c4b

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import spandsp-0.0.3
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 16:00:21 +0200
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4:26cd8f1ef0b1 5:f762bf195c4b
1 /*
2 * SpanDSP - a series of DSP components for telephony
3 *
4 * line_model_monitor.cpp - Model activity in a telephone line model, using the FLTK toolkit.
5 *
6 * Written by Steve Underwood <steveu@coppice.org>
7 *
8 * Copyright (C) 2006 Steve Underwood
9 *
10 * All rights reserved.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2, as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * $Id: line_model_monitor.cpp,v 1.2 2006/10/24 13:22:03 steveu Exp $
26 */
27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 #if defined(HAVE_FL_FL_H) && defined(HAVE_FL_FL_CARTESIAN_H)
33
34 #include <inttypes.h>
35 #include <stdio.h>
36 #include <math.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40 #include <sys/select.h>
41 #if defined(HAVE_FFTW3_H)
42 #include <fftw3.h>
43 #else
44 #include <fftw.h>
45 #endif
46
47 #include <FL/Fl.H>
48 #include <FL/Fl_Overlay_Window.H>
49 #include <FL/Fl_Light_Button.H>
50 #include <Fl/Fl_Cartesian.H>
51 #include <Fl/Fl_Audio_Meter.H>
52 #include <FL/fl_draw.H>
53
54 #include "../src/spandsp/complex.h"
55 //#include "spandsp.h"
56 #include "line_model_monitor.h"
57
58 Fl_Double_Window *w;
59
60 Fl_Audio_Meter *audio_meter;
61
62 Fl_Group *c_spec;
63 Fl_Group *c_right;
64 Fl_Group *c_can;
65 Fl_Group *c_line_model;
66
67 Ca_Canvas *canvas_spec;
68 Ca_X_Axis *spec_freq;
69 Ca_Y_Axis *spec_amp;
70 Ca_Line *spec_re = NULL;
71 double spec_re_plot[2*512];
72
73 Ca_Canvas *canvas_can;
74 Ca_X_Axis *can_x;
75 Ca_Y_Axis *can_y;
76 Ca_Line *can_re = NULL;
77 double can_re_plot[512];
78
79 Ca_Canvas *canvas_line_model;
80 Ca_X_Axis *line_model_x;
81 Ca_Y_Axis *line_model_y;
82 Ca_Line *line_model_re = NULL;
83 double line_model_re_plot[512];
84
85 static int skip = 0;
86
87 int in_ptr;
88 #if defined(HAVE_FFTW3_H)
89 double in[1024][2];
90 double out[1024][2];
91 #else
92 fftw_complex in[1024];
93 fftw_complex out[1024];
94 #endif
95 fftw_plan p;
96
97 int line_model_monitor_can_update(const float *coeffs, int len)
98 {
99 int i;
100 float min;
101 float max;
102
103 if (can_re)
104 delete can_re;
105
106 canvas_can->current(canvas_can);
107 i = 0;
108 min = coeffs[i];
109 max = coeffs[i];
110 for (i = 0; i < len; i++)
111 {
112 can_re_plot[2*i] = i;
113 can_re_plot[2*i + 1] = coeffs[i];
114 if (min > coeffs[i])
115 min = coeffs[i];
116 if (max < coeffs[i])
117 max = coeffs[i];
118 }
119 can_y->maximum((max == min) ? max + 0.2 : max);
120 can_y->minimum(min);
121 can_re = new Ca_Line(len, can_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
122 if (++skip >= 100)
123 {
124 skip = 0;
125 Fl::check();
126 }
127 return 0;
128 }
129 /*- End of function --------------------------------------------------------*/
130
131 int line_model_monitor_line_model_update(const float *coeffs, int len)
132 {
133 int i;
134 float min;
135 float max;
136
137 if (line_model_re)
138 delete line_model_re;
139
140 canvas_line_model->current(canvas_line_model);
141 i = 0;
142 min = coeffs[i];
143 max = coeffs[i];
144 for (i = 0; i < len; i++)
145 {
146 line_model_re_plot[2*i] = i;
147 line_model_re_plot[2*i + 1] = coeffs[i];
148 if (min > coeffs[i])
149 min = coeffs[i];
150 if (max < coeffs[i])
151 max = coeffs[i];
152 }
153 line_model_y->maximum((max == min) ? max + 0.2 : max);
154 line_model_y->minimum(min);
155 line_model_re = new Ca_Line(len, line_model_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
156 if (++skip >= 100)
157 {
158 skip = 0;
159 Fl::check();
160 }
161 return 0;
162 }
163 /*- End of function --------------------------------------------------------*/
164
165 int line_model_monitor_line_spectrum_update(const int16_t amp[], int len)
166 {
167 int i;
168 int x;
169
170 for (i = 0; i < len; i++)
171 audio_meter->sample(amp[i]/32768.0);
172
173 if (in_ptr + len < 512)
174 {
175 /* Just add this fragment to the buffer. */
176 for (i = 0; i < len; i++)
177 #if defined(HAVE_FFTW3_H)
178 in[in_ptr + i][0] = amp[i];
179 #else
180 in[in_ptr + i].re = amp[i];
181 #endif
182 in_ptr += len;
183 return 0;
184 }
185 if (len >= 512)
186 {
187 /* We have enough for a whole block. Use the last 512 samples
188 we have. */
189 x = len - 512;
190 for (i = 0; i < 512; i++)
191 #if defined(HAVE_FFTW3_H)
192 in[i][0] = amp[x + i];
193 #else
194 in[i].re = amp[x + i];
195 #endif
196 }
197 else
198 {
199 /* We want the last 512 samples. */
200 x = 512 - len;
201 for (i = 0; i < x; i++)
202 #if defined(HAVE_FFTW3_H)
203 in[i][0] = in[in_ptr - x + i][0];
204 #else
205 in[i].re = in[in_ptr - x + i].re;
206 #endif
207 for (i = x; i < 512; i++)
208 #if defined(HAVE_FFTW3_H)
209 in[i][0] = amp[i - x];
210 #else
211 in[i].re = amp[i - x];
212 #endif
213 }
214 in_ptr = 0;
215 #if defined(HAVE_FFTW3_H)
216 fftw_execute(p);
217 #else
218 fftw_one(p, in, out);
219 #endif
220 if (spec_re)
221 delete spec_re;
222 canvas_spec->current(canvas_spec);
223 for (i = 0; i < 512; i++)
224 {
225 spec_re_plot[2*i] = i*4000.0/512.0;
226 #if defined(HAVE_FFTW3_H)
227 spec_re_plot[2*i + 1] = 20.0*log10(sqrt(out[i][0]*out[i][0] + out[i][1]*out[i][1])/(256.0*32768)) + 3.14;
228 #else
229 spec_re_plot[2*i + 1] = 20.0*log10(sqrt(out[i].re*out[i].re + out[i].im*out[i].im)/(256.0*32768)) + 3.14;
230 #endif
231 }
232 spec_re = new Ca_Line(512, spec_re_plot, 0, 0, FL_BLUE, CA_NO_POINT);
233 Fl::check();
234 return 0;
235 }
236 /*- End of function --------------------------------------------------------*/
237
238 int start_line_model_monitor(int len)
239 {
240 char buf[132 + 1];
241 float x;
242 float y;
243 int i;
244
245 w = new Fl_Double_Window(850, 400, "Telephone line model monitor");
246
247 c_spec = new Fl_Group(0, 0, 380, 400);
248 c_spec->box(FL_DOWN_BOX);
249 c_spec->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
250
251 canvas_spec = new Ca_Canvas(60, 30, 300, 300, "Spectrum");
252 canvas_spec->box(FL_PLASTIC_DOWN_BOX);
253 canvas_spec->color(7);
254 canvas_spec->align(FL_ALIGN_TOP);
255 canvas_spec->border(15);
256
257 spec_freq = new Ca_X_Axis(65, 330, 290, 30, "Freq (Hz)");
258 spec_freq->align(FL_ALIGN_BOTTOM);
259 spec_freq->minimum(0);
260 spec_freq->maximum(4000);
261 spec_freq->label_format("%g");
262 spec_freq->minor_grid_color(fl_gray_ramp(20));
263 spec_freq->major_grid_color(fl_gray_ramp(15));
264 spec_freq->label_grid_color(fl_gray_ramp(10));
265 spec_freq->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
266 spec_freq->minor_grid_style(FL_DOT);
267 spec_freq->major_step(5);
268 spec_freq->label_step(1);
269 spec_freq->axis_color(FL_BLACK);
270 spec_freq->axis_align(CA_BOTTOM | CA_LINE);
271
272 spec_amp = new Ca_Y_Axis(20, 35, 40, 290, "Amp (dBmO)");
273 spec_amp->align(FL_ALIGN_LEFT);
274 spec_amp->minimum(-80.0);
275 spec_amp->maximum(10.0);
276 spec_amp->minor_grid_color(fl_gray_ramp(20));
277 spec_amp->major_grid_color(fl_gray_ramp(15));
278 spec_amp->label_grid_color(fl_gray_ramp(10));
279 //spec_amp->grid_visible(CA_MINOR_TICK | CA_MAJOR_TICK | CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
280 spec_amp->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
281 spec_amp->minor_grid_style(FL_DOT);
282 spec_amp->major_step(5);
283 spec_amp->label_step(1);
284 spec_amp->axis_color(FL_BLACK);
285
286 spec_amp->current();
287
288 c_spec->end();
289
290 c_right = new Fl_Group(440, 0, 465, 405);
291
292 c_can = new Fl_Group(380, 0, 415, 200);
293 c_can->box(FL_DOWN_BOX);
294 c_can->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
295 c_can->current();
296
297 canvas_can = new Ca_Canvas(460, 35, 300, 100, "??? coefficients");
298 canvas_can->box(FL_PLASTIC_DOWN_BOX);
299 canvas_can->color(7);
300 canvas_can->align(FL_ALIGN_TOP);
301 Fl_Group::current()->resizable(canvas_can);
302 canvas_can->border(15);
303
304 can_x = new Ca_X_Axis(465, 135, 290, 30, "Tap");
305 can_x->align(FL_ALIGN_BOTTOM);
306 can_x->minimum(0.0);
307 can_x->maximum((float) len);
308 can_x->label_format("%g");
309 can_x->minor_grid_color(fl_gray_ramp(20));
310 can_x->major_grid_color(fl_gray_ramp(15));
311 can_x->label_grid_color(fl_gray_ramp(10));
312 can_x->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
313 can_x->minor_grid_style(FL_DOT);
314 can_x->major_step(5);
315 can_x->label_step(1);
316 can_x->axis_align(CA_BOTTOM | CA_LINE);
317 can_x->axis_color(FL_BLACK);
318 can_x->current();
319
320 can_y = new Ca_Y_Axis(420, 40, 40, 90, "Amp");
321 can_y->align(FL_ALIGN_LEFT);
322 can_y->minimum(-0.1);
323 can_y->maximum(0.1);
324 can_y->minor_grid_color(fl_gray_ramp(20));
325 can_y->major_grid_color(fl_gray_ramp(15));
326 can_y->label_grid_color(fl_gray_ramp(10));
327 can_y->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
328 can_y->minor_grid_style(FL_DOT);
329 can_y->major_step(5);
330 can_y->label_step(1);
331 can_y->axis_color(FL_BLACK);
332 can_y->current();
333
334 c_can->end();
335
336 c_line_model = new Fl_Group(380, 200, 415, 200);
337 c_line_model->box(FL_DOWN_BOX);
338 c_line_model->align(FL_ALIGN_TOP | FL_ALIGN_INSIDE);
339 c_line_model->current();
340
341 canvas_line_model = new Ca_Canvas(460, 235, 300, 100, "Line impulse response model");
342 canvas_line_model->box(FL_PLASTIC_DOWN_BOX);
343 canvas_line_model->color(7);
344 canvas_line_model->align(FL_ALIGN_TOP);
345 Fl_Group::current()->resizable(canvas_line_model);
346 canvas_line_model->border(15);
347
348 line_model_x = new Ca_X_Axis(465, 335, 290, 30, "Tap");
349 line_model_x->align(FL_ALIGN_BOTTOM);
350 line_model_x->minimum(0.0);
351 line_model_x->maximum((float) len);
352 line_model_x->label_format("%g");
353 line_model_x->minor_grid_color(fl_gray_ramp(20));
354 line_model_x->major_grid_color(fl_gray_ramp(15));
355 line_model_x->label_grid_color(fl_gray_ramp(10));
356 line_model_x->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
357 line_model_x->minor_grid_style(FL_DOT);
358 line_model_x->major_step(5);
359 line_model_x->label_step(1);
360 line_model_x->axis_align(CA_BOTTOM | CA_LINE);
361 line_model_x->axis_color(FL_BLACK);
362 line_model_x->current();
363
364 line_model_y = new Ca_Y_Axis(420, 240, 40, 90, "Amp");
365 line_model_y->align(FL_ALIGN_LEFT);
366 line_model_y->minimum(-0.1);
367 line_model_y->maximum(0.1);
368 line_model_y->minor_grid_color(fl_gray_ramp(20));
369 line_model_y->major_grid_color(fl_gray_ramp(15));
370 line_model_y->label_grid_color(fl_gray_ramp(10));
371 line_model_y->grid_visible(CA_LABEL_GRID | CA_ALWAYS_VISIBLE);
372 line_model_y->minor_grid_style(FL_DOT);
373 line_model_y->major_step(5);
374 line_model_y->label_step(1);
375 line_model_y->axis_color(FL_BLACK);
376 line_model_y->current();
377
378 c_line_model->end();
379
380 audio_meter = new Fl_Audio_Meter(810, 40, 10, 250, "");
381 audio_meter->box(FL_PLASTIC_UP_BOX);
382 audio_meter->type(FL_VERT_AUDIO_METER);
383
384 c_right->end();
385
386 Fl_Group::current()->resizable(c_right);
387 w->end();
388 w->show();
389
390 #if defined(HAVE_FFTW3_H)
391 p = fftw_plan_dft_1d(1024, in, out, FFTW_BACKWARD, FFTW_ESTIMATE);
392 for (i = 0; i < 1024; i++)
393 {
394 in[i][0] = 0.0;
395 in[i][1] = 0.0;
396 }
397 #else
398 p = fftw_create_plan(1024, FFTW_BACKWARD, FFTW_ESTIMATE);
399 for (i = 0; i < 1024; i++)
400 {
401 in[i].re = 0.0;
402 in[i].im = 0.0;
403 }
404 #endif
405 in_ptr = 0;
406
407 Fl::check();
408 return 0;
409 }
410 /*- End of function --------------------------------------------------------*/
411
412 void line_model_monitor_wait_to_end(void)
413 {
414 fd_set rfds;
415 int res;
416 struct timeval tv;
417
418 fprintf(stderr, "Processing complete. Press the <enter> key to end\n");
419 do
420 {
421 usleep(100000);
422 Fl::check();
423 FD_ZERO(&rfds);
424 FD_SET(0, &rfds);
425 tv.tv_usec = 100000;
426 tv.tv_sec = 0;
427 res = select(1, &rfds, NULL, NULL, &tv);
428 }
429 while (res <= 0);
430 }
431 /*- End of function --------------------------------------------------------*/
432
433 void line_model_monitor_update_display(void)
434 {
435 Fl::check();
436 Fl::check();
437 Fl::check();
438 Fl::check();
439 Fl::check();
440 Fl::check();
441 Fl::check();
442 Fl::check();
443 Fl::check();
444 Fl::check();
445 Fl::check();
446 Fl::check();
447 }
448 /*- End of function --------------------------------------------------------*/
449 #endif
450 /*- End of file ------------------------------------------------------------*/

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