Session: Allow an SR_DF_META packet to override the samplerate
[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::ColorBGAlpha = 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::color() const
134 {
135         return color_;
136 }
137
138 void SignalBase::set_color(QColor color)
139 {
140         color_ = color;
141
142         bgcolor_ = color;
143         bgcolor_.setAlpha(ColorBGAlpha);
144
145         color_changed(color);
146 }
147
148 QColor SignalBase::bgcolor() const
149 {
150         return bgcolor_;
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 bool SignalBase::has_samples() const
242 {
243         bool result = false;
244
245         if (channel_type_ == AnalogChannel)
246         {
247                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
248                 if (data) {
249                         auto segments = data->analog_segments();
250                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
251                                 result = true;
252                 }
253         }
254
255         if (channel_type_ == LogicChannel)
256         {
257                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
258                 if (data) {
259                         auto segments = data->logic_segments();
260                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
261                                 result = true;
262                 }
263         }
264
265         return result;
266 }
267
268 SignalBase::ConversionType SignalBase::get_conversion_type() const
269 {
270         return conversion_type_;
271 }
272
273 void SignalBase::set_conversion_type(ConversionType t)
274 {
275         if (conversion_type_ != NoConversion) {
276                 stop_conversion();
277
278                 // Discard converted data
279                 converted_data_.reset();
280                 samples_cleared();
281         }
282
283         conversion_type_ = t;
284
285         // Re-create an empty container
286         // so that the signal is recognized as providing logic data
287         // and thus can be assigned to a decoder
288         if (conversion_is_a2l())
289                 if (!converted_data_)
290                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
291
292         start_conversion();
293
294         conversion_type_changed(t);
295 }
296
297 map<QString, QVariant> SignalBase::get_conversion_options() const
298 {
299         return conversion_options_;
300 }
301
302 bool SignalBase::set_conversion_option(QString key, QVariant value)
303 {
304         QVariant old_value;
305
306         auto key_iter = conversion_options_.find(key);
307         if (key_iter != conversion_options_.end())
308                 old_value = key_iter->second;
309
310         conversion_options_[key] = value;
311
312         return (value != old_value);
313 }
314
315 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
316         const bool always_custom) const
317 {
318         vector<double> result;
319         ConversionType conv_type = t;
320         ConversionPreset preset;
321
322         // Use currently active conversion if no conversion type was supplied
323         if (conv_type == NoConversion)
324                 conv_type = conversion_type_;
325
326         if (always_custom)
327                 preset = NoPreset;
328         else
329                 preset = get_current_conversion_preset();
330
331         if (conv_type == A2LConversionByThreshold) {
332                 double thr = 0;
333
334                 if (preset == NoPreset) {
335                         auto thr_iter = conversion_options_.find("threshold_value");
336                         if (thr_iter != conversion_options_.end())
337                                 thr = (thr_iter->second).toDouble();
338                 }
339
340                 if (preset == DynamicPreset)
341                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
342
343                 if ((int)preset == 1) thr = 0.9;
344                 if ((int)preset == 2) thr = 1.8;
345                 if ((int)preset == 3) thr = 2.5;
346                 if ((int)preset == 4) thr = 1.5;
347
348                 result.push_back(thr);
349         }
350
351         if (conv_type == A2LConversionBySchmittTrigger) {
352                 double thr_lo = 0, thr_hi = 0;
353
354                 if (preset == NoPreset) {
355                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
356                         if (thr_lo_iter != conversion_options_.end())
357                                 thr_lo = (thr_lo_iter->second).toDouble();
358
359                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
360                         if (thr_hi_iter != conversion_options_.end())
361                                 thr_hi = (thr_hi_iter->second).toDouble();
362                 }
363
364                 if (preset == DynamicPreset) {
365                         const double amplitude = max_value_ - min_value_;
366                         const double center = min_value_ + (amplitude / 2);
367                         thr_lo = center - (amplitude * 0.15);  // 15% margin
368                         thr_hi = center + (amplitude * 0.15);  // 15% margin
369                 }
370
371                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
372                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
373                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
374                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
375
376                 result.push_back(thr_lo);
377                 result.push_back(thr_hi);
378         }
379
380         return result;
381 }
382
383 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
384 {
385         vector< pair<QString, int> > presets;
386
387         if (conversion_type_ == A2LConversionByThreshold) {
388                 // Source: http://www.interfacebus.com/voltage_threshold.html
389                 presets.emplace_back(tr("Signal average"), 0);
390                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
391                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
392                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
393                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
394         }
395
396         if (conversion_type_ == A2LConversionBySchmittTrigger) {
397                 // Source: http://www.interfacebus.com/voltage_threshold.html
398                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
399                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
400                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
401                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
402                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
403         }
404
405         return presets;
406 }
407
408 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
409 {
410         auto preset = conversion_options_.find("preset");
411         if (preset != conversion_options_.end())
412                 return (ConversionPreset)((preset->second).toInt());
413
414         return DynamicPreset;
415 }
416
417 void SignalBase::set_conversion_preset(ConversionPreset id)
418 {
419         conversion_options_["preset"] = (int)id;
420 }
421
422 #ifdef ENABLE_DECODE
423 bool SignalBase::is_decode_signal() const
424 {
425         return (channel_type_ == DecodeChannel);
426 }
427 #endif
428
429 void SignalBase::save_settings(QSettings &settings) const
430 {
431         settings.setValue("name", name());
432         settings.setValue("enabled", enabled());
433         settings.setValue("color", color());
434         settings.setValue("conversion_type", (int)conversion_type_);
435
436         settings.setValue("conv_options", (int)(conversion_options_.size()));
437         int i = 0;
438         for (auto kvp : conversion_options_) {
439                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
440                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
441                 i++;
442         }
443 }
444
445 void SignalBase::restore_settings(QSettings &settings)
446 {
447         if (settings.contains("name"))
448                 set_name(settings.value("name").toString());
449
450         if (settings.contains("enabled"))
451                 set_enabled(settings.value("enabled").toBool());
452
453         if (settings.contains("color"))
454                 set_color(settings.value("color").value<QColor>());
455
456         if (settings.contains("conversion_type"))
457                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
458
459         int conv_options = 0;
460         if (settings.contains("conv_options"))
461                 conv_options = settings.value("conv_options").toInt();
462
463         if (conv_options)
464                 for (int i = 0; i < conv_options; i++) {
465                         const QString key_id = QString("conv_option%1_key").arg(i);
466                         const QString value_id = QString("conv_option%1_value").arg(i);
467
468                         if (settings.contains(key_id) && settings.contains(value_id))
469                                 conversion_options_[settings.value(key_id).toString()] =
470                                         settings.value(value_id);
471                 }
472 }
473
474 bool SignalBase::conversion_is_a2l() const
475 {
476         return ((channel_type_ == AnalogChannel) &&
477                 ((conversion_type_ == A2LConversionByThreshold) ||
478                 (conversion_type_ == A2LConversionBySchmittTrigger)));
479 }
480
481 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
482         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
483 {
484         if (end_sample > start_sample) {
485                 tie(min_value_, max_value_) = asegment->get_min_max();
486
487                 // Create sigrok::Analog instance
488                 float *asamples = new float[ConversionBlockSize];
489                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
490
491                 vector<shared_ptr<sigrok::Channel> > channels;
492                 channels.push_back(channel_);
493
494                 vector<const sigrok::QuantityFlag*> mq_flags;
495                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
496                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
497
498                 shared_ptr<sigrok::Packet> packet =
499                         Session::sr_context->create_analog_packet(channels,
500                         asamples, ConversionBlockSize, mq, unit, mq_flags);
501
502                 shared_ptr<sigrok::Analog> analog =
503                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
504
505                 // Convert
506                 uint64_t i = start_sample;
507
508                 if (conversion_type_ == A2LConversionByThreshold) {
509                         const double threshold = get_conversion_thresholds()[0];
510
511                         // Convert as many sample blocks as we can
512                         while ((end_sample - i) > ConversionBlockSize) {
513                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
514
515                                 shared_ptr<sigrok::Logic> logic =
516                                         analog->get_logic_via_threshold(threshold, lsamples);
517
518                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
519                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
520                                 i += ConversionBlockSize;
521                         }
522
523                         // Re-create sigrok::Analog and convert remaining samples
524                         packet = Session::sr_context->create_analog_packet(channels,
525                                 asamples, end_sample - i, mq, unit, mq_flags);
526
527                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
528
529                         asegment->get_samples(i, end_sample, asamples);
530                         shared_ptr<sigrok::Logic> logic =
531                                 analog->get_logic_via_threshold(threshold, lsamples);
532                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
533                         samples_added(lsegment->segment_id(), i, end_sample);
534                 }
535
536                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
537                         const vector<double> thresholds = get_conversion_thresholds();
538                         const double lo_thr = thresholds[0];
539                         const double hi_thr = thresholds[1];
540
541                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
542
543                         // Convert as many sample blocks as we can
544                         while ((end_sample - i) > ConversionBlockSize) {
545                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
546
547                                 shared_ptr<sigrok::Logic> logic =
548                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
549                                                 &state, lsamples);
550
551                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
552                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
553                                 i += ConversionBlockSize;
554                         }
555
556                         // Re-create sigrok::Analog and convert remaining samples
557                         packet = Session::sr_context->create_analog_packet(channels,
558                                 asamples, end_sample - i, mq, unit, mq_flags);
559
560                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
561
562                         asegment->get_samples(i, end_sample, asamples);
563                         shared_ptr<sigrok::Logic> logic =
564                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
565                                         &state, lsamples);
566                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
567                         samples_added(lsegment->segment_id(), i, end_sample);
568                 }
569
570                 // If acquisition is ongoing, start-/endsample may have changed
571                 end_sample = asegment->get_sample_count();
572
573                 delete[] lsamples;
574                 delete[] asamples;
575         }
576 }
577
578 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
579 {
580         uint64_t start_sample, end_sample, old_end_sample;
581         start_sample = end_sample = 0;
582         bool complete_state, old_complete_state;
583
584         start_sample = lsegment->get_sample_count();
585         end_sample = asegment->get_sample_count();
586         complete_state = asegment->is_complete();
587
588         // Don't do anything if the segment is still being filled and the sample count is too small
589         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
590                 return;
591
592         do {
593                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
594
595                 old_end_sample = end_sample;
596                 old_complete_state = complete_state;
597
598                 start_sample = lsegment->get_sample_count();
599                 end_sample = asegment->get_sample_count();
600                 complete_state = asegment->is_complete();
601
602                 // If the segment has been incomplete when we were called and has been
603                 // completed in the meanwhile, we convert the remaining samples as well.
604                 // Also, if a sufficient number of samples was added in the meanwhile,
605                 // we do another round of sample conversion.
606         } while ((complete_state != old_complete_state) ||
607                 (end_sample - old_end_sample >= ConversionBlockSize));
608 }
609
610 void SignalBase::conversion_thread_proc()
611 {
612         shared_ptr<Analog> analog_data;
613
614         if (conversion_is_a2l()) {
615                 analog_data = dynamic_pointer_cast<Analog>(data_);
616
617                 if (analog_data->analog_segments().size() == 0) {
618                         unique_lock<mutex> input_lock(conversion_input_mutex_);
619                         conversion_input_cond_.wait(input_lock);
620                 }
621
622         } else
623                 // Currently, we only handle A2L conversions
624                 return;
625
626         // If we had to wait for input data, we may have been notified to terminate
627         if (conversion_interrupt_)
628                 return;
629
630         uint32_t segment_id = 0;
631
632         AnalogSegment *asegment = analog_data->analog_segments().front().get();
633         assert(asegment);
634
635         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
636         assert(logic_data);
637
638         // Create the initial logic data segment if needed
639         if (logic_data->logic_segments().size() == 0) {
640                 shared_ptr<LogicSegment> new_segment =
641                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
642                 logic_data->push_segment(new_segment);
643         }
644
645         LogicSegment *lsegment = logic_data->logic_segments().front().get();
646         assert(lsegment);
647
648         do {
649                 convert_single_segment(asegment, lsegment);
650
651                 // Only advance to next segment if the current input segment is complete
652                 if (asegment->is_complete() &&
653                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
654                         // There are more segments to process
655                         segment_id++;
656
657                         try {
658                                 asegment = analog_data->analog_segments().at(segment_id).get();
659                         } catch (out_of_range&) {
660                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
661                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
662                                 return;
663                         }
664
665                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
666                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
667                         logic_data->push_segment(new_segment);
668
669                         lsegment = logic_data->logic_segments().back().get();
670                 } else {
671                         // No more samples/segments to process, wait for data or interrupt
672                         if (!conversion_interrupt_) {
673                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
674                                 conversion_input_cond_.wait(input_lock);
675                         }
676                 }
677         } while (!conversion_interrupt_);
678 }
679
680 void SignalBase::start_conversion(bool delayed_start)
681 {
682         if (delayed_start) {
683                 delayed_conversion_starter_.start();
684                 return;
685         }
686
687         stop_conversion();
688
689         if (converted_data_)
690                 converted_data_->clear();
691         samples_cleared();
692
693         conversion_interrupt_ = false;
694         conversion_thread_ = std::thread(
695                 &SignalBase::conversion_thread_proc, this);
696 }
697
698 void SignalBase::stop_conversion()
699 {
700         // Stop conversion so we can restart it from the beginning
701         conversion_interrupt_ = true;
702         conversion_input_cond_.notify_one();
703         if (conversion_thread_.joinable())
704                 conversion_thread_.join();
705 }
706
707 void SignalBase::on_samples_cleared()
708 {
709         if (converted_data_)
710                 converted_data_->clear();
711
712         samples_cleared();
713 }
714
715 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
716         uint64_t end_sample)
717 {
718         if (conversion_type_ != NoConversion) {
719                 if (conversion_thread_.joinable()) {
720                         // Notify the conversion thread since it's running
721                         conversion_input_cond_.notify_one();
722                 } else {
723                         // Start the conversion thread unless the delay timer is running
724                         if (!delayed_conversion_starter_.isActive())
725                                 start_conversion();
726                 }
727         }
728
729         data::Segment* s = qobject_cast<data::Segment*>(segment);
730         samples_added(s->segment_id(), start_sample, end_sample);
731 }
732
733 void SignalBase::on_min_max_changed(float min, float max)
734 {
735         // Restart conversion if one is enabled and uses a calculated threshold
736         if ((conversion_type_ != NoConversion) &&
737                 (get_current_conversion_preset() == DynamicPreset))
738                 start_conversion(true);
739
740         min_max_changed(min, max);
741 }
742
743 void SignalBase::on_capture_state_changed(int state)
744 {
745         if (state == Session::Running) {
746                 // Restart conversion if one is enabled
747                 if (conversion_type_ != NoConversion)
748                         start_conversion();
749         }
750 }
751
752 void SignalBase::on_delayed_conversion_start()
753 {
754         start_conversion();
755 }
756
757 } // namespace data
758 } // namespace pv