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_) && (!internal_name_.isEmpty()))
  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 void SignalBase::clear_sample_data()
 189 {
 190         if (analog_data())
 191                 analog_data()->clear();
 192
 193         if (logic_data())
 194                 logic_data()->clear();
 195 }
 196
 197 shared_ptr<data::Analog> SignalBase::analog_data() const
 198 {
 199         shared_ptr<Analog> result = nullptr;
 200
 201         if (channel_type_ == AnalogChannel)
 202                 result = dynamic_pointer_cast<Analog>(data_);
 203
 204         return result;
 205 }
 206
 207 shared_ptr<data::Logic> SignalBase::logic_data() const
 208 {
 209         shared_ptr<Logic> result = nullptr;
 210
 211         if (channel_type_ == LogicChannel)
 212                 result = dynamic_pointer_cast<Logic>(data_);
 213
 214         if (((conversion_type_ == A2LConversionByThreshold) ||
 215                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 216                 result = dynamic_pointer_cast<Logic>(converted_data_);
 217
 218         return result;
 219 }
 220
 221 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 222 {
 223         bool result = true;
 224
 225         if (channel_type_ == AnalogChannel)
 226         {
 227                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 228                 auto segments = data->analog_segments();
 229                 try {
 230                         result = segments.at(segment_id)->is_complete();
 231                 } catch (out_of_range&) {
 232                         // Do nothing
 233                 }
 234         }
 235
 236         if (channel_type_ == LogicChannel)
 237         {
 238                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 239                 auto segments = data->logic_segments();
 240                 try {
 241                         result = segments.at(segment_id)->is_complete();
 242                 } catch (out_of_range&) {
 243                         // Do nothing
 244                 }
 245         }
 246
 247         return result;
 248 }
 249
 250 bool SignalBase::has_samples() const
 251 {
 252         bool result = false;
 253
 254         if (channel_type_ == AnalogChannel)
 255         {
 256                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 257                 if (data) {
 258                         auto segments = data->analog_segments();
 259                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 260                                 result = true;
 261                 }
 262         }
 263
 264         if (channel_type_ == LogicChannel)
 265         {
 266                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 267                 if (data) {
 268                         auto segments = data->logic_segments();
 269                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 270                                 result = true;
 271                 }
 272         }
 273
 274         return result;
 275 }
 276
 277 double SignalBase::get_samplerate() const
 278 {
 279         if (channel_type_ == AnalogChannel)
 280         {
 281                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 282                 if (data)
 283                         return data->get_samplerate();
 284         }
 285
 286         if (channel_type_ == LogicChannel)
 287         {
 288                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 289                 if (data)
 290                         return data->get_samplerate();
 291         }
 292
 293         // Default samplerate is 1 Hz
 294         return 1.0;
 295 }
 296
 297 SignalBase::ConversionType SignalBase::get_conversion_type() const
 298 {
 299         return conversion_type_;
 300 }
 301
 302 void SignalBase::set_conversion_type(ConversionType t)
 303 {
 304         if (conversion_type_ != NoConversion) {
 305                 stop_conversion();
 306
 307                 // Discard converted data
 308                 converted_data_.reset();
 309                 samples_cleared();
 310         }
 311
 312         conversion_type_ = t;
 313
 314         // Re-create an empty container
 315         // so that the signal is recognized as providing logic data
 316         // and thus can be assigned to a decoder
 317         if (conversion_is_a2l())
 318                 if (!converted_data_)
 319                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 320
 321         start_conversion();
 322
 323         conversion_type_changed(t);
 324 }
 325
 326 map<QString, QVariant> SignalBase::get_conversion_options() const
 327 {
 328         return conversion_options_;
 329 }
 330
 331 bool SignalBase::set_conversion_option(QString key, QVariant value)
 332 {
 333         QVariant old_value;
 334
 335         auto key_iter = conversion_options_.find(key);
 336         if (key_iter != conversion_options_.end())
 337                 old_value = key_iter->second;
 338
 339         conversion_options_[key] = value;
 340
 341         return (value != old_value);
 342 }
 343
 344 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 345         const bool always_custom) const
 346 {
 347         vector<double> result;
 348         ConversionType conv_type = t;
 349         ConversionPreset preset;
 350
 351         // Use currently active conversion if no conversion type was supplied
 352         if (conv_type == NoConversion)
 353                 conv_type = conversion_type_;
 354
 355         if (always_custom)
 356                 preset = NoPreset;
 357         else
 358                 preset = get_current_conversion_preset();
 359
 360         if (conv_type == A2LConversionByThreshold) {
 361                 double thr = 0;
 362
 363                 if (preset == NoPreset) {
 364                         auto thr_iter = conversion_options_.find("threshold_value");
 365                         if (thr_iter != conversion_options_.end())
 366                                 thr = (thr_iter->second).toDouble();
 367                 }
 368
 369                 if (preset == DynamicPreset)
 370                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 371
 372                 if ((int)preset == 1) thr = 0.9;
 373                 if ((int)preset == 2) thr = 1.8;
 374                 if ((int)preset == 3) thr = 2.5;
 375                 if ((int)preset == 4) thr = 1.5;
 376
 377                 result.push_back(thr);
 378         }
 379
 380         if (conv_type == A2LConversionBySchmittTrigger) {
 381                 double thr_lo = 0, thr_hi = 0;
 382
 383                 if (preset == NoPreset) {
 384                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 385                         if (thr_lo_iter != conversion_options_.end())
 386                                 thr_lo = (thr_lo_iter->second).toDouble();
 387
 388                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 389                         if (thr_hi_iter != conversion_options_.end())
 390                                 thr_hi = (thr_hi_iter->second).toDouble();
 391                 }
 392
 393                 if (preset == DynamicPreset) {
 394                         const double amplitude = max_value_ - min_value_;
 395                         const double center = min_value_ + (amplitude / 2);
 396                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 397                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 398                 }
 399
 400                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 401                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 402                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 403                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 404
 405                 result.push_back(thr_lo);
 406                 result.push_back(thr_hi);
 407         }
 408
 409         return result;
 410 }
 411
 412 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 413 {
 414         vector< pair<QString, int> > presets;
 415
 416         if (conversion_type_ == A2LConversionByThreshold) {
 417                 // Source: http://www.interfacebus.com/voltage_threshold.html
 418                 presets.emplace_back(tr("Signal average"), 0);
 419                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 420                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 421                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 422                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 423         }
 424
 425         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 426                 // Source: http://www.interfacebus.com/voltage_threshold.html
 427                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 428                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 429                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 430                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 431                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 432         }
 433
 434         return presets;
 435 }
 436
 437 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 438 {
 439         auto preset = conversion_options_.find("preset");
 440         if (preset != conversion_options_.end())
 441                 return (ConversionPreset)((preset->second).toInt());
 442
 443         return DynamicPreset;
 444 }
 445
 446 void SignalBase::set_conversion_preset(ConversionPreset id)
 447 {
 448         conversion_options_["preset"] = (int)id;
 449 }
 450
 451 #ifdef ENABLE_DECODE
 452 bool SignalBase::is_decode_signal() const
 453 {
 454         return (channel_type_ == DecodeChannel);
 455 }
 456 #endif
 457
 458 void SignalBase::save_settings(QSettings &settings) const
 459 {
 460         settings.setValue("name", name());
 461         settings.setValue("enabled", enabled());
 462         settings.setValue("color", color().rgba());
 463         settings.setValue("conversion_type", (int)conversion_type_);
 464
 465         settings.setValue("conv_options", (int)(conversion_options_.size()));
 466         int i = 0;
 467         for (auto& kvp : conversion_options_) {
 468                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 469                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 470                 i++;
 471         }
 472 }
 473
 474 void SignalBase::restore_settings(QSettings &settings)
 475 {
 476         if (settings.contains("name"))
 477                 set_name(settings.value("name").toString());
 478
 479         if (settings.contains("enabled"))
 480                 set_enabled(settings.value("enabled").toBool());
 481
 482         if (settings.contains("color")) {
 483                 QVariant value = settings.value("color");
 484
 485                 // Workaround for Qt QColor serialization bug on OSX
 486                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 487                         set_color(value.value<QColor>());
 488                 else
 489                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 490
 491                 // A color with an alpha value of 0 makes the signal marker invisible
 492                 if (color() == QColor(0, 0, 0, 0))
 493                         set_color(Qt::gray);
 494         }
 495
 496         if (settings.contains("conversion_type"))
 497                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 498
 499         int conv_options = 0;
 500         if (settings.contains("conv_options"))
 501                 conv_options = settings.value("conv_options").toInt();
 502
 503         if (conv_options)
 504                 for (int i = 0; i < conv_options; i++) {
 505                         const QString key_id = QString("conv_option%1_key").arg(i);
 506                         const QString value_id = QString("conv_option%1_value").arg(i);
 507
 508                         if (settings.contains(key_id) && settings.contains(value_id))
 509                                 conversion_options_[settings.value(key_id).toString()] =
 510                                         settings.value(value_id);
 511                 }
 512 }
 513
 514 bool SignalBase::conversion_is_a2l() const
 515 {
 516         return ((channel_type_ == AnalogChannel) &&
 517                 ((conversion_type_ == A2LConversionByThreshold) ||
 518                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 519 }
 520
 521 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
 522         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
 523 {
 524         if (end_sample > start_sample) {
 525                 tie(min_value_, max_value_) = asegment->get_min_max();
 526
 527                 // Create sigrok::Analog instance
 528                 float *asamples = new float[ConversionBlockSize];
 529                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 530
 531                 vector<shared_ptr<sigrok::Channel> > channels;
 532                 channels.push_back(channel_);
 533
 534                 vector<const sigrok::QuantityFlag*> mq_flags;
 535                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 536                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 537
 538                 shared_ptr<sigrok::Packet> packet =
 539                         Session::sr_context->create_analog_packet(channels,
 540                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 541
 542                 shared_ptr<sigrok::Analog> analog =
 543                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 544
 545                 // Convert
 546                 uint64_t i = start_sample;
 547
 548                 if (conversion_type_ == A2LConversionByThreshold) {
 549                         const double threshold = get_conversion_thresholds()[0];
 550
 551                         // Convert as many sample blocks as we can
 552                         while ((end_sample - i) > ConversionBlockSize) {
 553                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 554
 555                                 shared_ptr<sigrok::Logic> logic =
 556                                         analog->get_logic_via_threshold(threshold, lsamples);
 557
 558                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 559                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 560                                 i += ConversionBlockSize;
 561                         }
 562
 563                         // Re-create sigrok::Analog and convert remaining samples
 564                         packet = Session::sr_context->create_analog_packet(channels,
 565                                 asamples, end_sample - i, mq, unit, mq_flags);
 566
 567                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 568
 569                         asegment->get_samples(i, end_sample, asamples);
 570                         shared_ptr<sigrok::Logic> logic =
 571                                 analog->get_logic_via_threshold(threshold, lsamples);
 572                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 573                         samples_added(lsegment->segment_id(), i, end_sample);
 574                 }
 575
 576                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 577                         const vector<double> thresholds = get_conversion_thresholds();
 578                         const double lo_thr = thresholds[0];
 579                         const double hi_thr = thresholds[1];
 580
 581                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 582
 583                         // Convert as many sample blocks as we can
 584                         while ((end_sample - i) > ConversionBlockSize) {
 585                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 586
 587                                 shared_ptr<sigrok::Logic> logic =
 588                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 589                                                 &state, lsamples);
 590
 591                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 592                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 593                                 i += ConversionBlockSize;
 594                         }
 595
 596                         // Re-create sigrok::Analog and convert remaining samples
 597                         packet = Session::sr_context->create_analog_packet(channels,
 598                                 asamples, end_sample - i, mq, unit, mq_flags);
 599
 600                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 601
 602                         asegment->get_samples(i, end_sample, asamples);
 603                         shared_ptr<sigrok::Logic> logic =
 604                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 605                                         &state, lsamples);
 606                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 607                         samples_added(lsegment->segment_id(), i, end_sample);
 608                 }
 609
 610                 // If acquisition is ongoing, start-/endsample may have changed
 611                 end_sample = asegment->get_sample_count();
 612
 613                 delete[] lsamples;
 614                 delete[] asamples;
 615         }
 616 }
 617
 618 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
 619 {
 620         uint64_t start_sample, end_sample, old_end_sample;
 621         start_sample = end_sample = 0;
 622         bool complete_state, old_complete_state;
 623
 624         start_sample = lsegment->get_sample_count();
 625         end_sample = asegment->get_sample_count();
 626         complete_state = asegment->is_complete();
 627
 628         // Don't do anything if the segment is still being filled and the sample count is too small
 629         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 630                 return;
 631
 632         do {
 633                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 634
 635                 old_end_sample = end_sample;
 636                 old_complete_state = complete_state;
 637
 638                 start_sample = lsegment->get_sample_count();
 639                 end_sample = asegment->get_sample_count();
 640                 complete_state = asegment->is_complete();
 641
 642                 // If the segment has been incomplete when we were called and has been
 643                 // completed in the meanwhile, we convert the remaining samples as well.
 644                 // Also, if a sufficient number of samples was added in the meanwhile,
 645                 // we do another round of sample conversion.
 646         } while ((complete_state != old_complete_state) ||
 647                 (end_sample - old_end_sample >= ConversionBlockSize));
 648 }
 649
 650 void SignalBase::conversion_thread_proc()
 651 {
 652         shared_ptr<Analog> analog_data;
 653
 654         if (conversion_is_a2l()) {
 655                 analog_data = dynamic_pointer_cast<Analog>(data_);
 656
 657                 if (analog_data->analog_segments().size() == 0) {
 658                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 659                         conversion_input_cond_.wait(input_lock);
 660                 }
 661
 662         } else
 663                 // Currently, we only handle A2L conversions
 664                 return;
 665
 666         // If we had to wait for input data, we may have been notified to terminate
 667         if (conversion_interrupt_)
 668                 return;
 669
 670         uint32_t segment_id = 0;
 671
 672         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 673         assert(asegment);
 674
 675         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 676         assert(logic_data);
 677
 678         // Create the initial logic data segment if needed
 679         if (logic_data->logic_segments().size() == 0) {
 680                 shared_ptr<LogicSegment> new_segment =
 681                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 682                 logic_data->push_segment(new_segment);
 683         }
 684
 685         LogicSegment *lsegment = logic_data->logic_segments().front().get();
 686         assert(lsegment);
 687
 688         do {
 689                 convert_single_segment(asegment, lsegment);
 690
 691                 // Only advance to next segment if the current input segment is complete
 692                 if (asegment->is_complete() &&
 693                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 694                         // There are more segments to process
 695                         segment_id++;
 696
 697                         try {
 698                                 asegment = analog_data->analog_segments().at(segment_id).get();
 699                         } catch (out_of_range&) {
 700                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 701                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 702                                 return;
 703                         }
 704
 705                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 706                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 707                         logic_data->push_segment(new_segment);
 708
 709                         lsegment = logic_data->logic_segments().back().get();
 710                 } else {
 711                         // No more samples/segments to process, wait for data or interrupt
 712                         if (!conversion_interrupt_) {
 713                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 714                                 conversion_input_cond_.wait(input_lock);
 715                         }
 716                 }
 717         } while (!conversion_interrupt_);
 718 }
 719
 720 void SignalBase::start_conversion(bool delayed_start)
 721 {
 722         if (delayed_start) {
 723                 delayed_conversion_starter_.start();
 724                 return;
 725         }
 726
 727         stop_conversion();
 728
 729         if (converted_data_)
 730                 converted_data_->clear();
 731         samples_cleared();
 732
 733         conversion_interrupt_ = false;
 734         conversion_thread_ = std::thread(
 735                 &SignalBase::conversion_thread_proc, this);
 736 }
 737
 738 void SignalBase::stop_conversion()
 739 {
 740         // Stop conversion so we can restart it from the beginning
 741         conversion_interrupt_ = true;
 742         conversion_input_cond_.notify_one();
 743         if (conversion_thread_.joinable())
 744                 conversion_thread_.join();
 745 }
 746
 747 void SignalBase::on_samples_cleared()
 748 {
 749         if (converted_data_)
 750                 converted_data_->clear();
 751
 752         samples_cleared();
 753 }
 754
 755 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
 756         uint64_t end_sample)
 757 {
 758         if (conversion_type_ != NoConversion) {
 759                 if (conversion_thread_.joinable()) {
 760                         // Notify the conversion thread since it's running
 761                         conversion_input_cond_.notify_one();
 762                 } else {
 763                         // Start the conversion thread unless the delay timer is running
 764                         if (!delayed_conversion_starter_.isActive())
 765                                 start_conversion();
 766                 }
 767         }
 768
 769         data::Segment* s = qobject_cast<data::Segment*>(segment);
 770         samples_added(s->segment_id(), start_sample, end_sample);
 771 }
 772
 773 void SignalBase::on_min_max_changed(float min, float max)
 774 {
 775         // Restart conversion if one is enabled and uses a calculated threshold
 776         if ((conversion_type_ != NoConversion) &&
 777                 (get_current_conversion_preset() == DynamicPreset))
 778                 start_conversion(true);
 779
 780         min_max_changed(min, max);
 781 }
 782
 783 void SignalBase::on_capture_state_changed(int state)
 784 {
 785         if (state == Session::Running) {
 786                 // Restart conversion if one is enabled
 787                 if (conversion_type_ != NoConversion)
 788                         start_conversion();
 789         }
 790 }
 791
 792 void SignalBase::on_delayed_conversion_start()
 793 {
 794         start_conversion();
 795 }
 796
 797 } // namespace data
 798 } // namespace pv