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 double SignalBase::get_samplerate() const
 269 {
 270         if (channel_type_ == AnalogChannel)
 271         {
 272                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 273                 if (data)
 274                         return data->get_samplerate();
 275         }
 276
 277         if (channel_type_ == LogicChannel)
 278         {
 279                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 280                 if (data)
 281                         return data->get_samplerate();
 282         }
 283
 284         // Default samplerate is 1 Hz
 285         return 1.0;
 286 }
 287
 288 SignalBase::ConversionType SignalBase::get_conversion_type() const
 289 {
 290         return conversion_type_;
 291 }
 292
 293 void SignalBase::set_conversion_type(ConversionType t)
 294 {
 295         if (conversion_type_ != NoConversion) {
 296                 stop_conversion();
 297
 298                 // Discard converted data
 299                 converted_data_.reset();
 300                 samples_cleared();
 301         }
 302
 303         conversion_type_ = t;
 304
 305         // Re-create an empty container
 306         // so that the signal is recognized as providing logic data
 307         // and thus can be assigned to a decoder
 308         if (conversion_is_a2l())
 309                 if (!converted_data_)
 310                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 311
 312         start_conversion();
 313
 314         conversion_type_changed(t);
 315 }
 316
 317 map<QString, QVariant> SignalBase::get_conversion_options() const
 318 {
 319         return conversion_options_;
 320 }
 321
 322 bool SignalBase::set_conversion_option(QString key, QVariant value)
 323 {
 324         QVariant old_value;
 325
 326         auto key_iter = conversion_options_.find(key);
 327         if (key_iter != conversion_options_.end())
 328                 old_value = key_iter->second;
 329
 330         conversion_options_[key] = value;
 331
 332         return (value != old_value);
 333 }
 334
 335 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 336         const bool always_custom) const
 337 {
 338         vector<double> result;
 339         ConversionType conv_type = t;
 340         ConversionPreset preset;
 341
 342         // Use currently active conversion if no conversion type was supplied
 343         if (conv_type == NoConversion)
 344                 conv_type = conversion_type_;
 345
 346         if (always_custom)
 347                 preset = NoPreset;
 348         else
 349                 preset = get_current_conversion_preset();
 350
 351         if (conv_type == A2LConversionByThreshold) {
 352                 double thr = 0;
 353
 354                 if (preset == NoPreset) {
 355                         auto thr_iter = conversion_options_.find("threshold_value");
 356                         if (thr_iter != conversion_options_.end())
 357                                 thr = (thr_iter->second).toDouble();
 358                 }
 359
 360                 if (preset == DynamicPreset)
 361                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 362
 363                 if ((int)preset == 1) thr = 0.9;
 364                 if ((int)preset == 2) thr = 1.8;
 365                 if ((int)preset == 3) thr = 2.5;
 366                 if ((int)preset == 4) thr = 1.5;
 367
 368                 result.push_back(thr);
 369         }
 370
 371         if (conv_type == A2LConversionBySchmittTrigger) {
 372                 double thr_lo = 0, thr_hi = 0;
 373
 374                 if (preset == NoPreset) {
 375                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 376                         if (thr_lo_iter != conversion_options_.end())
 377                                 thr_lo = (thr_lo_iter->second).toDouble();
 378
 379                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 380                         if (thr_hi_iter != conversion_options_.end())
 381                                 thr_hi = (thr_hi_iter->second).toDouble();
 382                 }
 383
 384                 if (preset == DynamicPreset) {
 385                         const double amplitude = max_value_ - min_value_;
 386                         const double center = min_value_ + (amplitude / 2);
 387                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 388                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 389                 }
 390
 391                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 392                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 393                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 394                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 395
 396                 result.push_back(thr_lo);
 397                 result.push_back(thr_hi);
 398         }
 399
 400         return result;
 401 }
 402
 403 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 404 {
 405         vector< pair<QString, int> > presets;
 406
 407         if (conversion_type_ == A2LConversionByThreshold) {
 408                 // Source: http://www.interfacebus.com/voltage_threshold.html
 409                 presets.emplace_back(tr("Signal average"), 0);
 410                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 411                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 412                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 413                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 414         }
 415
 416         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 417                 // Source: http://www.interfacebus.com/voltage_threshold.html
 418                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 419                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 420                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 421                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 422                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 423         }
 424
 425         return presets;
 426 }
 427
 428 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 429 {
 430         auto preset = conversion_options_.find("preset");
 431         if (preset != conversion_options_.end())
 432                 return (ConversionPreset)((preset->second).toInt());
 433
 434         return DynamicPreset;
 435 }
 436
 437 void SignalBase::set_conversion_preset(ConversionPreset id)
 438 {
 439         conversion_options_["preset"] = (int)id;
 440 }
 441
 442 #ifdef ENABLE_DECODE
 443 bool SignalBase::is_decode_signal() const
 444 {
 445         return (channel_type_ == DecodeChannel);
 446 }
 447 #endif
 448
 449 void SignalBase::save_settings(QSettings &settings) const
 450 {
 451         settings.setValue("name", name());
 452         settings.setValue("enabled", enabled());
 453         settings.setValue("color", color().rgba());
 454         settings.setValue("conversion_type", (int)conversion_type_);
 455
 456         settings.setValue("conv_options", (int)(conversion_options_.size()));
 457         int i = 0;
 458         for (auto& kvp : conversion_options_) {
 459                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 460                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 461                 i++;
 462         }
 463 }
 464
 465 void SignalBase::restore_settings(QSettings &settings)
 466 {
 467         if (settings.contains("name"))
 468                 set_name(settings.value("name").toString());
 469
 470         if (settings.contains("enabled"))
 471                 set_enabled(settings.value("enabled").toBool());
 472
 473         if (settings.contains("color")) {
 474                 QVariant value = settings.value("color");
 475
 476                 // Workaround for Qt QColor serialization bug on OSX
 477                 if (((QMetaType::Type)(value.type()) == QMetaType::QColor) && value.isValid())
 478                         set_color(value.value<QColor>());
 479                 else
 480                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 481         }
 482
 483         if (settings.contains("conversion_type"))
 484                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 485
 486         int conv_options = 0;
 487         if (settings.contains("conv_options"))
 488                 conv_options = settings.value("conv_options").toInt();
 489
 490         if (conv_options)
 491                 for (int i = 0; i < conv_options; i++) {
 492                         const QString key_id = QString("conv_option%1_key").arg(i);
 493                         const QString value_id = QString("conv_option%1_value").arg(i);
 494
 495                         if (settings.contains(key_id) && settings.contains(value_id))
 496                                 conversion_options_[settings.value(key_id).toString()] =
 497                                         settings.value(value_id);
 498                 }
 499 }
 500
 501 bool SignalBase::conversion_is_a2l() const
 502 {
 503         return ((channel_type_ == AnalogChannel) &&
 504                 ((conversion_type_ == A2LConversionByThreshold) ||
 505                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 506 }
 507
 508 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
 509         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
 510 {
 511         if (end_sample > start_sample) {
 512                 tie(min_value_, max_value_) = asegment->get_min_max();
 513
 514                 // Create sigrok::Analog instance
 515                 float *asamples = new float[ConversionBlockSize];
 516                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 517
 518                 vector<shared_ptr<sigrok::Channel> > channels;
 519                 channels.push_back(channel_);
 520
 521                 vector<const sigrok::QuantityFlag*> mq_flags;
 522                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 523                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 524
 525                 shared_ptr<sigrok::Packet> packet =
 526                         Session::sr_context->create_analog_packet(channels,
 527                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 528
 529                 shared_ptr<sigrok::Analog> analog =
 530                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 531
 532                 // Convert
 533                 uint64_t i = start_sample;
 534
 535                 if (conversion_type_ == A2LConversionByThreshold) {
 536                         const double threshold = get_conversion_thresholds()[0];
 537
 538                         // Convert as many sample blocks as we can
 539                         while ((end_sample - i) > ConversionBlockSize) {
 540                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 541
 542                                 shared_ptr<sigrok::Logic> logic =
 543                                         analog->get_logic_via_threshold(threshold, lsamples);
 544
 545                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 546                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 547                                 i += ConversionBlockSize;
 548                         }
 549
 550                         // Re-create sigrok::Analog and convert remaining samples
 551                         packet = Session::sr_context->create_analog_packet(channels,
 552                                 asamples, end_sample - i, mq, unit, mq_flags);
 553
 554                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 555
 556                         asegment->get_samples(i, end_sample, asamples);
 557                         shared_ptr<sigrok::Logic> logic =
 558                                 analog->get_logic_via_threshold(threshold, lsamples);
 559                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 560                         samples_added(lsegment->segment_id(), i, end_sample);
 561                 }
 562
 563                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 564                         const vector<double> thresholds = get_conversion_thresholds();
 565                         const double lo_thr = thresholds[0];
 566                         const double hi_thr = thresholds[1];
 567
 568                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 569
 570                         // Convert as many sample blocks as we can
 571                         while ((end_sample - i) > ConversionBlockSize) {
 572                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 573
 574                                 shared_ptr<sigrok::Logic> logic =
 575                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 576                                                 &state, lsamples);
 577
 578                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 579                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 580                                 i += ConversionBlockSize;
 581                         }
 582
 583                         // Re-create sigrok::Analog and convert remaining samples
 584                         packet = Session::sr_context->create_analog_packet(channels,
 585                                 asamples, end_sample - i, mq, unit, mq_flags);
 586
 587                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 588
 589                         asegment->get_samples(i, end_sample, asamples);
 590                         shared_ptr<sigrok::Logic> logic =
 591                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 592                                         &state, lsamples);
 593                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 594                         samples_added(lsegment->segment_id(), i, end_sample);
 595                 }
 596
 597                 // If acquisition is ongoing, start-/endsample may have changed
 598                 end_sample = asegment->get_sample_count();
 599
 600                 delete[] lsamples;
 601                 delete[] asamples;
 602         }
 603 }
 604
 605 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
 606 {
 607         uint64_t start_sample, end_sample, old_end_sample;
 608         start_sample = end_sample = 0;
 609         bool complete_state, old_complete_state;
 610
 611         start_sample = lsegment->get_sample_count();
 612         end_sample = asegment->get_sample_count();
 613         complete_state = asegment->is_complete();
 614
 615         // Don't do anything if the segment is still being filled and the sample count is too small
 616         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 617                 return;
 618
 619         do {
 620                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 621
 622                 old_end_sample = end_sample;
 623                 old_complete_state = complete_state;
 624
 625                 start_sample = lsegment->get_sample_count();
 626                 end_sample = asegment->get_sample_count();
 627                 complete_state = asegment->is_complete();
 628
 629                 // If the segment has been incomplete when we were called and has been
 630                 // completed in the meanwhile, we convert the remaining samples as well.
 631                 // Also, if a sufficient number of samples was added in the meanwhile,
 632                 // we do another round of sample conversion.
 633         } while ((complete_state != old_complete_state) ||
 634                 (end_sample - old_end_sample >= ConversionBlockSize));
 635 }
 636
 637 void SignalBase::conversion_thread_proc()
 638 {
 639         shared_ptr<Analog> analog_data;
 640
 641         if (conversion_is_a2l()) {
 642                 analog_data = dynamic_pointer_cast<Analog>(data_);
 643
 644                 if (analog_data->analog_segments().size() == 0) {
 645                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 646                         conversion_input_cond_.wait(input_lock);
 647                 }
 648
 649         } else
 650                 // Currently, we only handle A2L conversions
 651                 return;
 652
 653         // If we had to wait for input data, we may have been notified to terminate
 654         if (conversion_interrupt_)
 655                 return;
 656
 657         uint32_t segment_id = 0;
 658
 659         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 660         assert(asegment);
 661
 662         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 663         assert(logic_data);
 664
 665         // Create the initial logic data segment if needed
 666         if (logic_data->logic_segments().size() == 0) {
 667                 shared_ptr<LogicSegment> new_segment =
 668                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 669                 logic_data->push_segment(new_segment);
 670         }
 671
 672         LogicSegment *lsegment = logic_data->logic_segments().front().get();
 673         assert(lsegment);
 674
 675         do {
 676                 convert_single_segment(asegment, lsegment);
 677
 678                 // Only advance to next segment if the current input segment is complete
 679                 if (asegment->is_complete() &&
 680                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 681                         // There are more segments to process
 682                         segment_id++;
 683
 684                         try {
 685                                 asegment = analog_data->analog_segments().at(segment_id).get();
 686                         } catch (out_of_range&) {
 687                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 688                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 689                                 return;
 690                         }
 691
 692                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 693                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 694                         logic_data->push_segment(new_segment);
 695
 696                         lsegment = logic_data->logic_segments().back().get();
 697                 } else {
 698                         // No more samples/segments to process, wait for data or interrupt
 699                         if (!conversion_interrupt_) {
 700                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 701                                 conversion_input_cond_.wait(input_lock);
 702                         }
 703                 }
 704         } while (!conversion_interrupt_);
 705 }
 706
 707 void SignalBase::start_conversion(bool delayed_start)
 708 {
 709         if (delayed_start) {
 710                 delayed_conversion_starter_.start();
 711                 return;
 712         }
 713
 714         stop_conversion();
 715
 716         if (converted_data_)
 717                 converted_data_->clear();
 718         samples_cleared();
 719
 720         conversion_interrupt_ = false;
 721         conversion_thread_ = std::thread(
 722                 &SignalBase::conversion_thread_proc, this);
 723 }
 724
 725 void SignalBase::stop_conversion()
 726 {
 727         // Stop conversion so we can restart it from the beginning
 728         conversion_interrupt_ = true;
 729         conversion_input_cond_.notify_one();
 730         if (conversion_thread_.joinable())
 731                 conversion_thread_.join();
 732 }
 733
 734 void SignalBase::on_samples_cleared()
 735 {
 736         if (converted_data_)
 737                 converted_data_->clear();
 738
 739         samples_cleared();
 740 }
 741
 742 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
 743         uint64_t end_sample)
 744 {
 745         if (conversion_type_ != NoConversion) {
 746                 if (conversion_thread_.joinable()) {
 747                         // Notify the conversion thread since it's running
 748                         conversion_input_cond_.notify_one();
 749                 } else {
 750                         // Start the conversion thread unless the delay timer is running
 751                         if (!delayed_conversion_starter_.isActive())
 752                                 start_conversion();
 753                 }
 754         }
 755
 756         data::Segment* s = qobject_cast<data::Segment*>(segment);
 757         samples_added(s->segment_id(), start_sample, end_sample);
 758 }
 759
 760 void SignalBase::on_min_max_changed(float min, float max)
 761 {
 762         // Restart conversion if one is enabled and uses a calculated threshold
 763         if ((conversion_type_ != NoConversion) &&
 764                 (get_current_conversion_preset() == DynamicPreset))
 765                 start_conversion(true);
 766
 767         min_max_changed(min, max);
 768 }
 769
 770 void SignalBase::on_capture_state_changed(int state)
 771 {
 772         if (state == Session::Running) {
 773                 // Restart conversion if one is enabled
 774                 if (conversion_type_ != NoConversion)
 775                         start_conversion();
 776         }
 777 }
 778
 779 void SignalBase::on_delayed_conversion_start()
 780 {
 781         start_conversion();
 782 }
 783
 784 } // namespace data
 785 } // namespace pv