CMakeLists.txt: Only add Qt5PlatformSupport for Qt < 5.8.0.
[pulseview.git] / pv / data / signalbase.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
5  * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #include "analog.hpp"
22 #include "analogsegment.hpp"
23 #include "decode/row.hpp"
24 #include "logic.hpp"
25 #include "logicsegment.hpp"
26 #include "signalbase.hpp"
27 #include "signaldata.hpp"
28
29 #include <QDebug>
30
31 #include <pv/binding/decoder.hpp>
32 #include <pv/session.hpp>
33
34 using std::dynamic_pointer_cast;
35 using std::make_shared;
36 using std::out_of_range;
37 using std::shared_ptr;
38 using std::tie;
39 using std::unique_lock;
40
41 namespace pv {
42 namespace data {
43
44 const int SignalBase::ColourBGAlpha = 8 * 256 / 100;
45 const uint64_t SignalBase::ConversionBlockSize = 4096;
46 const uint32_t SignalBase::ConversionDelay = 1000;  // 1 second
47
48 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
49         channel_(channel),
50         channel_type_(channel_type),
51         conversion_type_(NoConversion),
52         min_value_(0),
53         max_value_(0)
54 {
55         if (channel_)
56                 internal_name_ = QString::fromStdString(channel_->name());
57
58         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
59                 this, SLOT(on_delayed_conversion_start()));
60         delayed_conversion_starter_.setSingleShot(true);
61         delayed_conversion_starter_.setInterval(ConversionDelay);
62 }
63
64 SignalBase::~SignalBase()
65 {
66         stop_conversion();
67 }
68
69 shared_ptr<sigrok::Channel> SignalBase::channel() const
70 {
71         return channel_;
72 }
73
74 QString SignalBase::name() const
75 {
76         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
77 }
78
79 QString SignalBase::internal_name() const
80 {
81         return internal_name_;
82 }
83
84 QString SignalBase::display_name() const
85 {
86         if (name() != internal_name_)
87                 return name() + " (" + internal_name_ + ")";
88         else
89                 return name();
90 }
91
92 void SignalBase::set_name(QString name)
93 {
94         if (channel_)
95                 channel_->set_name(name.toUtf8().constData());
96
97         name_ = name;
98
99         name_changed(name);
100 }
101
102 bool SignalBase::enabled() const
103 {
104         return (channel_) ? channel_->enabled() : true;
105 }
106
107 void SignalBase::set_enabled(bool value)
108 {
109         if (channel_) {
110                 channel_->set_enabled(value);
111                 enabled_changed(value);
112         }
113 }
114
115 SignalBase::ChannelType SignalBase::type() const
116 {
117         return channel_type_;
118 }
119
120 unsigned int SignalBase::index() const
121 {
122         return (channel_) ? channel_->index() : 0;
123 }
124
125 unsigned int SignalBase::logic_bit_index() const
126 {
127         if (channel_type_ == LogicChannel)
128                 return channel_->index();
129         else
130                 return 0;
131 }
132
133 QColor SignalBase::colour() const
134 {
135         return colour_;
136 }
137
138 void SignalBase::set_colour(QColor colour)
139 {
140         colour_ = colour;
141
142         bgcolour_ = colour;
143         bgcolour_.setAlpha(ColourBGAlpha);
144
145         colour_changed(colour);
146 }
147
148 QColor SignalBase::bgcolour() const
149 {
150         return bgcolour_;
151 }
152
153 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
154 {
155         if (data_) {
156                 disconnect(data.get(), SIGNAL(samples_cleared()),
157                         this, SLOT(on_samples_cleared()));
158                 disconnect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
159                         this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
160
161                 if (channel_type_ == AnalogChannel) {
162                         shared_ptr<Analog> analog = analog_data();
163                         assert(analog);
164
165                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
166                                 this, SLOT(on_min_max_changed(float, float)));
167                 }
168         }
169
170         data_ = data;
171
172         if (data_) {
173                 connect(data.get(), SIGNAL(samples_cleared()),
174                         this, SLOT(on_samples_cleared()));
175                 connect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
176                         this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
177
178                 if (channel_type_ == AnalogChannel) {
179                         shared_ptr<Analog> analog = analog_data();
180                         assert(analog);
181
182                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
183                                 this, SLOT(on_min_max_changed(float, float)));
184                 }
185         }
186 }
187
188 shared_ptr<data::Analog> SignalBase::analog_data() const
189 {
190         shared_ptr<Analog> result = nullptr;
191
192         if (channel_type_ == AnalogChannel)
193                 result = dynamic_pointer_cast<Analog>(data_);
194
195         return result;
196 }
197
198 shared_ptr<data::Logic> SignalBase::logic_data() const
199 {
200         shared_ptr<Logic> result = nullptr;
201
202         if (channel_type_ == LogicChannel)
203                 result = dynamic_pointer_cast<Logic>(data_);
204
205         if (((conversion_type_ == A2LConversionByThreshold) ||
206                 (conversion_type_ == A2LConversionBySchmittTrigger)))
207                 result = dynamic_pointer_cast<Logic>(converted_data_);
208
209         return result;
210 }
211
212 bool SignalBase::segment_is_complete(uint32_t segment_id) const
213 {
214         bool result = true;
215
216         if (channel_type_ == AnalogChannel)
217         {
218                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
219                 auto segments = data->analog_segments();
220                 try {
221                         result = segments.at(segment_id)->is_complete();
222                 } catch (out_of_range&) {
223                         // Do nothing
224                 }
225         }
226
227         if (channel_type_ == LogicChannel)
228         {
229                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
230                 auto segments = data->logic_segments();
231                 try {
232                         result = segments.at(segment_id)->is_complete();
233                 } catch (out_of_range&) {
234                         // Do nothing
235                 }
236         }
237
238         return result;
239 }
240
241 SignalBase::ConversionType SignalBase::get_conversion_type() const
242 {
243         return conversion_type_;
244 }
245
246 void SignalBase::set_conversion_type(ConversionType t)
247 {
248         if (conversion_type_ != NoConversion) {
249                 stop_conversion();
250
251                 // Discard converted data
252                 converted_data_.reset();
253                 samples_cleared();
254         }
255
256         conversion_type_ = t;
257
258         // Re-create an empty container
259         // so that the signal is recognized as providing logic data
260         // and thus can be assigned to a decoder
261         if (conversion_is_a2l())
262                 if (!converted_data_)
263                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
264
265         start_conversion();
266
267         conversion_type_changed(t);
268 }
269
270 map<QString, QVariant> SignalBase::get_conversion_options() const
271 {
272         return conversion_options_;
273 }
274
275 bool SignalBase::set_conversion_option(QString key, QVariant value)
276 {
277         QVariant old_value;
278
279         auto key_iter = conversion_options_.find(key);
280         if (key_iter != conversion_options_.end())
281                 old_value = key_iter->second;
282
283         conversion_options_[key] = value;
284
285         return (value != old_value);
286 }
287
288 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
289         const bool always_custom) const
290 {
291         vector<double> result;
292         ConversionType conv_type = t;
293         ConversionPreset preset;
294
295         // Use currently active conversion if no conversion type was supplied
296         if (conv_type == NoConversion)
297                 conv_type = conversion_type_;
298
299         if (always_custom)
300                 preset = NoPreset;
301         else
302                 preset = get_current_conversion_preset();
303
304         if (conv_type == A2LConversionByThreshold) {
305                 double thr = 0;
306
307                 if (preset == NoPreset) {
308                         auto thr_iter = conversion_options_.find("threshold_value");
309                         if (thr_iter != conversion_options_.end())
310                                 thr = (thr_iter->second).toDouble();
311                 }
312
313                 if (preset == DynamicPreset)
314                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
315
316                 if ((int)preset == 1) thr = 0.9;
317                 if ((int)preset == 2) thr = 1.8;
318                 if ((int)preset == 3) thr = 2.5;
319                 if ((int)preset == 4) thr = 1.5;
320
321                 result.push_back(thr);
322         }
323
324         if (conv_type == A2LConversionBySchmittTrigger) {
325                 double thr_lo = 0, thr_hi = 0;
326
327                 if (preset == NoPreset) {
328                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
329                         if (thr_lo_iter != conversion_options_.end())
330                                 thr_lo = (thr_lo_iter->second).toDouble();
331
332                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
333                         if (thr_hi_iter != conversion_options_.end())
334                                 thr_hi = (thr_hi_iter->second).toDouble();
335                 }
336
337                 if (preset == DynamicPreset) {
338                         const double amplitude = max_value_ - min_value_;
339                         const double center = min_value_ + (amplitude / 2);
340                         thr_lo = center - (amplitude * 0.15);  // 15% margin
341                         thr_hi = center + (amplitude * 0.15);  // 15% margin
342                 }
343
344                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
345                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
346                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
347                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
348
349                 result.push_back(thr_lo);
350                 result.push_back(thr_hi);
351         }
352
353         return result;
354 }
355
356 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
357 {
358         vector< pair<QString, int> > presets;
359
360         if (conversion_type_ == A2LConversionByThreshold) {
361                 // Source: http://www.interfacebus.com/voltage_threshold.html
362                 presets.emplace_back(tr("Signal average"), 0);
363                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
364                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
365                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
366                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
367         }
368
369         if (conversion_type_ == A2LConversionBySchmittTrigger) {
370                 // Source: http://www.interfacebus.com/voltage_threshold.html
371                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
372                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
373                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
374                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
375                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
376         }
377
378         return presets;
379 }
380
381 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
382 {
383         auto preset = conversion_options_.find("preset");
384         if (preset != conversion_options_.end())
385                 return (ConversionPreset)((preset->second).toInt());
386
387         return DynamicPreset;
388 }
389
390 void SignalBase::set_conversion_preset(ConversionPreset id)
391 {
392         conversion_options_["preset"] = (int)id;
393 }
394
395 #ifdef ENABLE_DECODE
396 bool SignalBase::is_decode_signal() const
397 {
398         return (channel_type_ == DecodeChannel);
399 }
400 #endif
401
402 void SignalBase::save_settings(QSettings &settings) const
403 {
404         settings.setValue("name", name());
405         settings.setValue("enabled", enabled());
406         settings.setValue("colour", colour());
407         settings.setValue("conversion_type", (int)conversion_type_);
408
409         settings.setValue("conv_options", (int)(conversion_options_.size()));
410         int i = 0;
411         for (auto kvp : conversion_options_) {
412                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
413                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
414                 i++;
415         }
416 }
417
418 void SignalBase::restore_settings(QSettings &settings)
419 {
420         set_name(settings.value("name").toString());
421         set_enabled(settings.value("enabled").toBool());
422         set_colour(settings.value("colour").value<QColor>());
423         set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
424
425         int conv_options = settings.value("conv_options").toInt();
426
427         if (conv_options)
428                 for (int i = 0; i < conv_options; i++) {
429                         QString key = settings.value(QString("conv_option%1_key").arg(i)).toString();
430                         QVariant value = settings.value(QString("conv_option%1_value").arg(i));
431                         conversion_options_[key] = value;
432                 }
433 }
434
435 bool SignalBase::conversion_is_a2l() const
436 {
437         return ((channel_type_ == AnalogChannel) &&
438                 ((conversion_type_ == A2LConversionByThreshold) ||
439                 (conversion_type_ == A2LConversionBySchmittTrigger)));
440 }
441
442 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
443         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
444 {
445         if (end_sample > start_sample) {
446                 tie(min_value_, max_value_) = asegment->get_min_max();
447
448                 // Create sigrok::Analog instance
449                 float *asamples = new float[ConversionBlockSize];
450                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
451
452                 vector<shared_ptr<sigrok::Channel> > channels;
453                 channels.push_back(channel_);
454
455                 vector<const sigrok::QuantityFlag*> mq_flags;
456                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
457                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
458
459                 shared_ptr<sigrok::Packet> packet =
460                         Session::sr_context->create_analog_packet(channels,
461                         asamples, ConversionBlockSize, mq, unit, mq_flags);
462
463                 shared_ptr<sigrok::Analog> analog =
464                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
465
466                 // Convert
467                 uint64_t i = start_sample;
468
469                 if (conversion_type_ == A2LConversionByThreshold) {
470                         const double threshold = get_conversion_thresholds()[0];
471
472                         // Convert as many sample blocks as we can
473                         while ((end_sample - i) > ConversionBlockSize) {
474                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
475
476                                 shared_ptr<sigrok::Logic> logic =
477                                         analog->get_logic_via_threshold(threshold, lsamples);
478
479                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
480                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
481                                 i += ConversionBlockSize;
482                         }
483
484                         // Re-create sigrok::Analog and convert remaining samples
485                         packet = Session::sr_context->create_analog_packet(channels,
486                                 asamples, end_sample - i, mq, unit, mq_flags);
487
488                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
489
490                         asegment->get_samples(i, end_sample, asamples);
491                         shared_ptr<sigrok::Logic> logic =
492                                 analog->get_logic_via_threshold(threshold, lsamples);
493                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
494                         samples_added(lsegment->segment_id(), i, end_sample);
495                 }
496
497                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
498                         const vector<double> thresholds = get_conversion_thresholds();
499                         const double lo_thr = thresholds[0];
500                         const double hi_thr = thresholds[1];
501
502                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
503
504                         // Convert as many sample blocks as we can
505                         while ((end_sample - i) > ConversionBlockSize) {
506                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
507
508                                 shared_ptr<sigrok::Logic> logic =
509                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
510                                                 &state, lsamples);
511
512                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
513                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
514                                 i += ConversionBlockSize;
515                         }
516
517                         // Re-create sigrok::Analog and convert remaining samples
518                         packet = Session::sr_context->create_analog_packet(channels,
519                                 asamples, end_sample - i, mq, unit, mq_flags);
520
521                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
522
523                         asegment->get_samples(i, end_sample, asamples);
524                         shared_ptr<sigrok::Logic> logic =
525                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
526                                         &state, lsamples);
527                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
528                         samples_added(lsegment->segment_id(), i, end_sample);
529                 }
530
531                 // If acquisition is ongoing, start-/endsample may have changed
532                 end_sample = asegment->get_sample_count();
533
534                 delete[] lsamples;
535                 delete[] asamples;
536         }
537 }
538
539 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
540 {
541         uint64_t start_sample, end_sample, old_end_sample;
542         start_sample = end_sample = 0;
543         bool complete_state, old_complete_state;
544
545         start_sample = lsegment->get_sample_count();
546         end_sample = asegment->get_sample_count();
547         complete_state = asegment->is_complete();
548
549         // Don't do anything if the segment is still being filled and the sample count is too small
550         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
551                 return;
552
553         do {
554                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
555
556                 old_end_sample = end_sample;
557                 old_complete_state = complete_state;
558
559                 start_sample = lsegment->get_sample_count();
560                 end_sample = asegment->get_sample_count();
561                 complete_state = asegment->is_complete();
562
563                 // If the segment has been incomplete when we were called and has been
564                 // completed in the meanwhile, we convert the remaining samples as well.
565                 // Also, if a sufficient number of samples was added in the meanwhile,
566                 // we do another round of sample conversion.
567         } while ((complete_state != old_complete_state) ||
568                 (end_sample - old_end_sample >= ConversionBlockSize));
569 }
570
571 void SignalBase::conversion_thread_proc()
572 {
573         shared_ptr<Analog> analog_data;
574
575         if (conversion_is_a2l()) {
576                 analog_data = dynamic_pointer_cast<Analog>(data_);
577
578                 if (analog_data->analog_segments().size() == 0) {
579                         unique_lock<mutex> input_lock(conversion_input_mutex_);
580                         conversion_input_cond_.wait(input_lock);
581                 }
582
583         } else
584                 // Currently, we only handle A2L conversions
585                 return;
586
587         // If we had to wait for input data, we may have been notified to terminate
588         if (conversion_interrupt_)
589                 return;
590
591         uint32_t segment_id = 0;
592
593         AnalogSegment *asegment = analog_data->analog_segments().front().get();
594         assert(asegment);
595
596         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
597         assert(logic_data);
598
599         // Create the initial logic data segment if needed
600         if (logic_data->logic_segments().size() == 0) {
601                 shared_ptr<LogicSegment> new_segment =
602                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
603                 logic_data->push_segment(new_segment);
604         }
605
606         LogicSegment *lsegment = logic_data->logic_segments().front().get();
607         assert(lsegment);
608
609         do {
610                 convert_single_segment(asegment, lsegment);
611
612                 // Only advance to next segment if the current input segment is complete
613                 if (asegment->is_complete() &&
614                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
615                         // There are more segments to process
616                         segment_id++;
617
618                         try {
619                                 asegment = analog_data->analog_segments().at(segment_id).get();
620                         } catch (out_of_range&) {
621                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
622                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
623                                 return;
624                         }
625
626                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
627                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
628                         logic_data->push_segment(new_segment);
629
630                         lsegment = logic_data->logic_segments().back().get();
631                 } else {
632                         // No more samples/segments to process, wait for data or interrupt
633                         if (!conversion_interrupt_) {
634                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
635                                 conversion_input_cond_.wait(input_lock);
636                         }
637                 }
638         } while (!conversion_interrupt_);
639 }
640
641 void SignalBase::start_conversion(bool delayed_start)
642 {
643         if (delayed_start) {
644                 delayed_conversion_starter_.start();
645                 return;
646         }
647
648         stop_conversion();
649
650         if (converted_data_)
651                 converted_data_->clear();
652         samples_cleared();
653
654         conversion_interrupt_ = false;
655         conversion_thread_ = std::thread(
656                 &SignalBase::conversion_thread_proc, this);
657 }
658
659 void SignalBase::stop_conversion()
660 {
661         // Stop conversion so we can restart it from the beginning
662         conversion_interrupt_ = true;
663         conversion_input_cond_.notify_one();
664         if (conversion_thread_.joinable())
665                 conversion_thread_.join();
666 }
667
668 void SignalBase::on_samples_cleared()
669 {
670         if (converted_data_)
671                 converted_data_->clear();
672
673         samples_cleared();
674 }
675
676 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
677         uint64_t end_sample)
678 {
679         if (conversion_type_ != NoConversion) {
680                 if (conversion_thread_.joinable()) {
681                         // Notify the conversion thread since it's running
682                         conversion_input_cond_.notify_one();
683                 } else {
684                         // Start the conversion thread unless the delay timer is running
685                         if (!delayed_conversion_starter_.isActive())
686                                 start_conversion();
687                 }
688         }
689
690         data::Segment* s = qobject_cast<data::Segment*>(segment);
691         samples_added(s->segment_id(), start_sample, end_sample);
692 }
693
694 void SignalBase::on_min_max_changed(float min, float max)
695 {
696         // Restart conversion if one is enabled and uses a calculated threshold
697         if ((conversion_type_ != NoConversion) &&
698                 (get_current_conversion_preset() == DynamicPreset))
699                 start_conversion(true);
700
701         min_max_changed(min, max);
702 }
703
704 void SignalBase::on_capture_state_changed(int state)
705 {
706         if (state == Session::Running) {
707                 // Restart conversion if one is enabled
708                 if (conversion_type_ != NoConversion)
709                         start_conversion();
710         }
711 }
712
713 void SignalBase::on_delayed_conversion_start()
714 {
715         start_conversion();
716 }
717
718 } // namespace data
719 } // namespace pv