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
  49 SignalGroup::SignalGroup(const QString& name)
  50 {
  51         name_ = name;
  52 }
  53
  54 void SignalGroup::append_signal(shared_ptr<SignalBase> signal)
  55 {
  56         if (!signal)
  57                 return;
  58
  59         signals_.push_back(signal);
  60         signal->set_group(this);
  61 }
  62
  63 void SignalGroup::remove_signal(shared_ptr<SignalBase> signal)
  64 {
  65         if (!signal)
  66                 return;
  67
  68         signals_.erase(std::remove_if(signals_.begin(), signals_.end(),
  69                 [&](shared_ptr<SignalBase> s) { return s == signal; }),
  70                 signals_.end());
  71 }
  72
  73 deque<shared_ptr<SignalBase>> SignalGroup::signals() const
  74 {
  75         return signals_;
  76 }
  77
  78 void SignalGroup::clear()
  79 {
  80         for (shared_ptr<SignalBase> sb : signals_)
  81                 sb->set_group(nullptr);
  82
  83         signals_.clear();
  84 }
  85
  86 const QString SignalGroup::name() const
  87 {
  88         return name_;
  89 }
  90
  91
  92 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
  93         channel_(channel),
  94         channel_type_(channel_type),
  95         group_(nullptr),
  96         conversion_type_(NoConversion),
  97         min_value_(0),
  98         max_value_(0)
  99 {
 100         if (channel_) {
 101                 internal_name_ = QString::fromStdString(channel_->name());
 102                 index_ = channel_->index();
 103         }
 104
 105         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
 106                 this, SLOT(on_delayed_conversion_start()));
 107         delayed_conversion_starter_.setSingleShot(true);
 108         delayed_conversion_starter_.setInterval(ConversionDelay);
 109 }
 110
 111 SignalBase::~SignalBase()
 112 {
 113         stop_conversion();
 114 }
 115
 116 shared_ptr<sigrok::Channel> SignalBase::channel() const
 117 {
 118         return channel_;
 119 }
 120
 121 bool SignalBase::is_generated() const
 122 {
 123         // Only signals associated with a device have a corresponding sigrok channel
 124         return channel_ == nullptr;
 125 }
 126
 127 bool SignalBase::enabled() const
 128 {
 129         return (channel_) ? channel_->enabled() : true;
 130 }
 131
 132 void SignalBase::set_enabled(bool value)
 133 {
 134         if (channel_) {
 135                 channel_->set_enabled(value);
 136                 enabled_changed(value);
 137         }
 138 }
 139
 140 SignalBase::ChannelType SignalBase::type() const
 141 {
 142         return channel_type_;
 143 }
 144
 145 unsigned int SignalBase::index() const
 146 {
 147         return index_;
 148 }
 149
 150 void SignalBase::set_index(unsigned int index)
 151 {
 152         index_ = index;
 153 }
 154
 155 unsigned int SignalBase::logic_bit_index() const
 156 {
 157         if (channel_type_ == LogicChannel)
 158                 return index_;
 159         else
 160                 return 0;
 161 }
 162
 163 void SignalBase::set_group(SignalGroup* group)
 164 {
 165         group_ = group;
 166 }
 167
 168 SignalGroup* SignalBase::group() const
 169 {
 170         return group_;
 171 }
 172
 173 QString SignalBase::name() const
 174 {
 175         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
 176 }
 177
 178 QString SignalBase::internal_name() const
 179 {
 180         return internal_name_;
 181 }
 182
 183 void SignalBase::set_internal_name(QString internal_name)
 184 {
 185         internal_name_ = internal_name;
 186 }
 187
 188 QString SignalBase::display_name() const
 189 {
 190         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 191                 return name() + " (" + internal_name_ + ")";
 192         else
 193                 return name();
 194 }
 195
 196 void SignalBase::set_name(QString name)
 197 {
 198         if (channel_)
 199                 channel_->set_name(name.toUtf8().constData());
 200
 201         name_ = name;
 202
 203         name_changed(name);
 204 }
 205
 206 QColor SignalBase::color() const
 207 {
 208         return color_;
 209 }
 210
 211 void SignalBase::set_color(QColor color)
 212 {
 213         color_ = color;
 214
 215         bgcolor_ = color;
 216         bgcolor_.setAlpha(ColorBGAlpha);
 217
 218         color_changed(color);
 219 }
 220
 221 QColor SignalBase::bgcolor() const
 222 {
 223         return bgcolor_;
 224 }
 225
 226 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 227 {
 228         if (data_) {
 229                 disconnect(data.get(), SIGNAL(samples_cleared()),
 230                         this, SLOT(on_samples_cleared()));
 231                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 232                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 233
 234                 shared_ptr<Analog> analog = analog_data();
 235                 if (analog)
 236                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 237                                 this, SLOT(on_min_max_changed(float, float)));
 238         }
 239
 240         data_ = data;
 241
 242         if (data_) {
 243                 connect(data.get(), SIGNAL(samples_cleared()),
 244                         this, SLOT(on_samples_cleared()));
 245                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 246                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 247
 248                 shared_ptr<Analog> analog = analog_data();
 249                 if (analog)
 250                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 251                                 this, SLOT(on_min_max_changed(float, float)));
 252         }
 253 }
 254
 255 void SignalBase::clear_sample_data()
 256 {
 257         if (analog_data())
 258                 analog_data()->clear();
 259
 260         if (logic_data())
 261                 logic_data()->clear();
 262 }
 263
 264 shared_ptr<data::Analog> SignalBase::analog_data() const
 265 {
 266         return dynamic_pointer_cast<Analog>(data_);
 267 }
 268
 269 shared_ptr<data::Logic> SignalBase::logic_data() const
 270 {
 271         shared_ptr<Logic> result = dynamic_pointer_cast<Logic>(data_);
 272
 273         if (((conversion_type_ == A2LConversionByThreshold) ||
 274                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 275                 result = dynamic_pointer_cast<Logic>(converted_data_);
 276
 277         return result;
 278 }
 279
 280 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 281 {
 282         bool result = true;
 283
 284         shared_ptr<Analog> adata = analog_data();
 285         if (adata)
 286         {
 287                 auto segments = adata->analog_segments();
 288                 try {
 289                         result = segments.at(segment_id)->is_complete();
 290                 } catch (out_of_range&) {
 291                         // Do nothing
 292                 }
 293         } else {
 294                 shared_ptr<Logic> ldata = logic_data();
 295                 if (ldata) {
 296                         shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 297                         auto segments = data->logic_segments();
 298                         try {
 299                                 result = segments.at(segment_id)->is_complete();
 300                         } catch (out_of_range&) {
 301                                 // Do nothing
 302                         }
 303                 }
 304         }
 305
 306         return result;
 307 }
 308
 309 bool SignalBase::has_samples() const
 310 {
 311         bool result = false;
 312
 313         shared_ptr<Analog> adata = analog_data();
 314         if (adata)
 315         {
 316                 auto segments = adata->analog_segments();
 317                 if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 318                         result = true;
 319         } else {
 320                 shared_ptr<Logic> ldata = logic_data();
 321                 if (ldata) {
 322                         auto segments = ldata->logic_segments();
 323                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 324                                 result = true;
 325                 }
 326         }
 327
 328         return result;
 329 }
 330
 331 double SignalBase::get_samplerate() const
 332 {
 333         shared_ptr<Analog> adata = analog_data();
 334         if (adata)
 335                 return adata->get_samplerate();
 336         else {
 337                 shared_ptr<Logic> ldata = logic_data();
 338                 if (ldata)
 339                         return ldata->get_samplerate();
 340         }
 341
 342         // Default samplerate is 1 Hz
 343         return 1.0;
 344 }
 345
 346 SignalBase::ConversionType SignalBase::get_conversion_type() const
 347 {
 348         return conversion_type_;
 349 }
 350
 351 void SignalBase::set_conversion_type(ConversionType t)
 352 {
 353         if (conversion_type_ != NoConversion) {
 354                 stop_conversion();
 355
 356                 // Discard converted data
 357                 converted_data_.reset();
 358                 samples_cleared();
 359         }
 360
 361         conversion_type_ = t;
 362
 363         // Re-create an empty container
 364         // so that the signal is recognized as providing logic data
 365         // and thus can be assigned to a decoder
 366         if (conversion_is_a2l())
 367                 if (!converted_data_)
 368                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 369
 370         start_conversion();
 371
 372         conversion_type_changed(t);
 373 }
 374
 375 map<QString, QVariant> SignalBase::get_conversion_options() const
 376 {
 377         return conversion_options_;
 378 }
 379
 380 bool SignalBase::set_conversion_option(QString key, QVariant value)
 381 {
 382         QVariant old_value;
 383
 384         auto key_iter = conversion_options_.find(key);
 385         if (key_iter != conversion_options_.end())
 386                 old_value = key_iter->second;
 387
 388         conversion_options_[key] = value;
 389
 390         return (value != old_value);
 391 }
 392
 393 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 394         const bool always_custom) const
 395 {
 396         vector<double> result;
 397         ConversionType conv_type = t;
 398         ConversionPreset preset;
 399
 400         // Use currently active conversion if no conversion type was supplied
 401         if (conv_type == NoConversion)
 402                 conv_type = conversion_type_;
 403
 404         if (always_custom)
 405                 preset = NoPreset;
 406         else
 407                 preset = get_current_conversion_preset();
 408
 409         if (conv_type == A2LConversionByThreshold) {
 410                 double thr = 0;
 411
 412                 if (preset == NoPreset) {
 413                         auto thr_iter = conversion_options_.find("threshold_value");
 414                         if (thr_iter != conversion_options_.end())
 415                                 thr = (thr_iter->second).toDouble();
 416                 }
 417
 418                 if (preset == DynamicPreset)
 419                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 420
 421                 if ((int)preset == 1) thr = 0.9;
 422                 if ((int)preset == 2) thr = 1.8;
 423                 if ((int)preset == 3) thr = 2.5;
 424                 if ((int)preset == 4) thr = 1.5;
 425
 426                 result.push_back(thr);
 427         }
 428
 429         if (conv_type == A2LConversionBySchmittTrigger) {
 430                 double thr_lo = 0, thr_hi = 0;
 431
 432                 if (preset == NoPreset) {
 433                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 434                         if (thr_lo_iter != conversion_options_.end())
 435                                 thr_lo = (thr_lo_iter->second).toDouble();
 436
 437                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 438                         if (thr_hi_iter != conversion_options_.end())
 439                                 thr_hi = (thr_hi_iter->second).toDouble();
 440                 }
 441
 442                 if (preset == DynamicPreset) {
 443                         const double amplitude = max_value_ - min_value_;
 444                         const double center = min_value_ + (amplitude / 2);
 445                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 446                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 447                 }
 448
 449                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 450                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 451                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 452                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 453
 454                 result.push_back(thr_lo);
 455                 result.push_back(thr_hi);
 456         }
 457
 458         return result;
 459 }
 460
 461 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 462 {
 463         vector< pair<QString, int> > presets;
 464
 465         if (conversion_type_ == A2LConversionByThreshold) {
 466                 // Source: http://www.interfacebus.com/voltage_threshold.html
 467                 presets.emplace_back(tr("Signal average"), 0);
 468                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 469                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 470                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 471                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 472         }
 473
 474         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 475                 // Source: http://www.interfacebus.com/voltage_threshold.html
 476                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 477                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 478                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 479                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 480                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 481         }
 482
 483         return presets;
 484 }
 485
 486 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 487 {
 488         auto preset = conversion_options_.find("preset");
 489         if (preset != conversion_options_.end())
 490                 return (ConversionPreset)((preset->second).toInt());
 491
 492         return DynamicPreset;
 493 }
 494
 495 void SignalBase::set_conversion_preset(ConversionPreset id)
 496 {
 497         conversion_options_["preset"] = (int)id;
 498 }
 499
 500 #ifdef ENABLE_DECODE
 501 bool SignalBase::is_decode_signal() const
 502 {
 503         return (channel_type_ == DecodeChannel);
 504 }
 505 #endif
 506
 507 void SignalBase::save_settings(QSettings &settings) const
 508 {
 509         settings.setValue("name", name());
 510         settings.setValue("enabled", enabled());
 511         settings.setValue("color", color().rgba());
 512         settings.setValue("conversion_type", (int)conversion_type_);
 513
 514         settings.setValue("conv_options", (int)(conversion_options_.size()));
 515         int i = 0;
 516         for (auto& kvp : conversion_options_) {
 517                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 518                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 519                 i++;
 520         }
 521 }
 522
 523 void SignalBase::restore_settings(QSettings &settings)
 524 {
 525         if (settings.contains("name"))
 526                 set_name(settings.value("name").toString());
 527
 528         if (settings.contains("enabled"))
 529                 set_enabled(settings.value("enabled").toBool());
 530
 531         if (settings.contains("color")) {
 532                 QVariant value = settings.value("color");
 533
 534                 // Workaround for Qt QColor serialization bug on OSX
 535                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 536                         set_color(value.value<QColor>());
 537                 else
 538                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 539
 540                 // A color with an alpha value of 0 makes the signal marker invisible
 541                 if (color() == QColor(0, 0, 0, 0))
 542                         set_color(Qt::gray);
 543         }
 544
 545         if (settings.contains("conversion_type"))
 546                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 547
 548         int conv_options = 0;
 549         if (settings.contains("conv_options"))
 550                 conv_options = settings.value("conv_options").toInt();
 551
 552         if (conv_options)
 553                 for (int i = 0; i < conv_options; i++) {
 554                         const QString key_id = QString("conv_option%1_key").arg(i);
 555                         const QString value_id = QString("conv_option%1_value").arg(i);
 556
 557                         if (settings.contains(key_id) && settings.contains(value_id))
 558                                 conversion_options_[settings.value(key_id).toString()] =
 559                                         settings.value(value_id);
 560                 }
 561 }
 562
 563 bool SignalBase::conversion_is_a2l() const
 564 {
 565         return (((conversion_type_ == A2LConversionByThreshold) ||
 566                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 567 }
 568
 569 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
 570         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
 571 {
 572         if (end_sample > start_sample) {
 573                 tie(min_value_, max_value_) = asegment->get_min_max();
 574
 575                 // Create sigrok::Analog instance
 576                 float *asamples = new float[ConversionBlockSize];
 577                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 578
 579                 vector<shared_ptr<sigrok::Channel> > channels;
 580                 if (channel_)
 581                         channels.push_back(channel_);
 582
 583                 vector<const sigrok::QuantityFlag*> mq_flags;
 584                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 585                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 586
 587                 shared_ptr<sigrok::Packet> packet =
 588                         Session::sr_context->create_analog_packet(channels,
 589                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 590
 591                 shared_ptr<sigrok::Analog> analog =
 592                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 593
 594                 // Convert
 595                 uint64_t i = start_sample;
 596
 597                 if (conversion_type_ == A2LConversionByThreshold) {
 598                         const double threshold = get_conversion_thresholds()[0];
 599
 600                         // Convert as many sample blocks as we can
 601                         while ((end_sample - i) > ConversionBlockSize) {
 602                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 603
 604                                 shared_ptr<sigrok::Logic> logic =
 605                                         analog->get_logic_via_threshold(threshold, lsamples);
 606
 607                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 608                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 609                                 i += ConversionBlockSize;
 610                         }
 611
 612                         // Re-create sigrok::Analog and convert remaining samples
 613                         packet = Session::sr_context->create_analog_packet(channels,
 614                                 asamples, end_sample - i, mq, unit, mq_flags);
 615
 616                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 617
 618                         asegment->get_samples(i, end_sample, asamples);
 619                         shared_ptr<sigrok::Logic> logic =
 620                                 analog->get_logic_via_threshold(threshold, lsamples);
 621                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 622                         samples_added(lsegment->segment_id(), i, end_sample);
 623                 }
 624
 625                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 626                         const vector<double> thresholds = get_conversion_thresholds();
 627                         const double lo_thr = thresholds[0];
 628                         const double hi_thr = thresholds[1];
 629
 630                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 631
 632                         // Convert as many sample blocks as we can
 633                         while ((end_sample - i) > ConversionBlockSize) {
 634                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 635
 636                                 shared_ptr<sigrok::Logic> logic =
 637                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 638                                                 &state, lsamples);
 639
 640                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 641                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 642                                 i += ConversionBlockSize;
 643                         }
 644
 645                         // Re-create sigrok::Analog and convert remaining samples
 646                         packet = Session::sr_context->create_analog_packet(channels,
 647                                 asamples, end_sample - i, mq, unit, mq_flags);
 648
 649                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 650
 651                         asegment->get_samples(i, end_sample, asamples);
 652                         shared_ptr<sigrok::Logic> logic =
 653                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 654                                         &state, lsamples);
 655                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 656                         samples_added(lsegment->segment_id(), i, end_sample);
 657                 }
 658
 659                 // If acquisition is ongoing, start-/endsample may have changed
 660                 end_sample = asegment->get_sample_count();
 661
 662                 delete[] lsamples;
 663                 delete[] asamples;
 664         }
 665 }
 666
 667 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
 668 {
 669         uint64_t start_sample, end_sample, old_end_sample;
 670         start_sample = end_sample = 0;
 671         bool complete_state, old_complete_state;
 672
 673         start_sample = lsegment->get_sample_count();
 674         end_sample = asegment->get_sample_count();
 675         complete_state = asegment->is_complete();
 676
 677         // Don't do anything if the segment is still being filled and the sample count is too small
 678         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 679                 return;
 680
 681         do {
 682                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 683
 684                 old_end_sample = end_sample;
 685                 old_complete_state = complete_state;
 686
 687                 start_sample = lsegment->get_sample_count();
 688                 end_sample = asegment->get_sample_count();
 689                 complete_state = asegment->is_complete();
 690
 691                 // If the segment has been incomplete when we were called and has been
 692                 // completed in the meanwhile, we convert the remaining samples as well.
 693                 // Also, if a sufficient number of samples was added in the meanwhile,
 694                 // we do another round of sample conversion.
 695         } while ((complete_state != old_complete_state) ||
 696                 (end_sample - old_end_sample >= ConversionBlockSize));
 697 }
 698
 699 void SignalBase::conversion_thread_proc()
 700 {
 701         shared_ptr<Analog> analog_data;
 702
 703         if (conversion_is_a2l()) {
 704                 analog_data = dynamic_pointer_cast<Analog>(data_);
 705
 706                 if (analog_data->analog_segments().size() == 0) {
 707                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 708                         conversion_input_cond_.wait(input_lock);
 709                 }
 710
 711         } else
 712                 // Currently, we only handle A2L conversions
 713                 return;
 714
 715         // If we had to wait for input data, we may have been notified to terminate
 716         if (conversion_interrupt_)
 717                 return;
 718
 719         uint32_t segment_id = 0;
 720
 721         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 722         assert(asegment);
 723
 724         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 725         assert(logic_data);
 726
 727         // Create the initial logic data segment if needed
 728         if (logic_data->logic_segments().size() == 0) {
 729                 shared_ptr<LogicSegment> new_segment =
 730                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 731                 logic_data->push_segment(new_segment);
 732         }
 733
 734         LogicSegment *lsegment = logic_data->logic_segments().front().get();
 735         assert(lsegment);
 736
 737         do {
 738                 convert_single_segment(asegment, lsegment);
 739
 740                 // Only advance to next segment if the current input segment is complete
 741                 if (asegment->is_complete() &&
 742                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 743                         // There are more segments to process
 744                         segment_id++;
 745
 746                         try {
 747                                 asegment = analog_data->analog_segments().at(segment_id).get();
 748                         } catch (out_of_range&) {
 749                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 750                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 751                                 return;
 752                         }
 753
 754                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 755                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 756                         logic_data->push_segment(new_segment);
 757
 758                         lsegment = logic_data->logic_segments().back().get();
 759                 } else {
 760                         // No more samples/segments to process, wait for data or interrupt
 761                         if (!conversion_interrupt_) {
 762                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 763                                 conversion_input_cond_.wait(input_lock);
 764                         }
 765                 }
 766         } while (!conversion_interrupt_);
 767 }
 768
 769 void SignalBase::start_conversion(bool delayed_start)
 770 {
 771         if (delayed_start) {
 772                 delayed_conversion_starter_.start();
 773                 return;
 774         }
 775
 776         stop_conversion();
 777
 778         if (converted_data_)
 779                 converted_data_->clear();
 780         samples_cleared();
 781
 782         conversion_interrupt_ = false;
 783         conversion_thread_ = std::thread(
 784                 &SignalBase::conversion_thread_proc, this);
 785 }
 786
 787 void SignalBase::stop_conversion()
 788 {
 789         // Stop conversion so we can restart it from the beginning
 790         conversion_interrupt_ = true;
 791         conversion_input_cond_.notify_one();
 792         if (conversion_thread_.joinable())
 793                 conversion_thread_.join();
 794 }
 795
 796 void SignalBase::on_samples_cleared()
 797 {
 798         if (converted_data_)
 799                 converted_data_->clear();
 800
 801         samples_cleared();
 802 }
 803
 804 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 805         uint64_t end_sample)
 806 {
 807         if (conversion_type_ != NoConversion) {
 808                 if (conversion_thread_.joinable()) {
 809                         // Notify the conversion thread since it's running
 810                         conversion_input_cond_.notify_one();
 811                 } else {
 812                         // Start the conversion thread unless the delay timer is running
 813                         if (!delayed_conversion_starter_.isActive())
 814                                 start_conversion();
 815                 }
 816         }
 817
 818         samples_added(segment->segment_id(), start_sample, end_sample);
 819 }
 820
 821 void SignalBase::on_min_max_changed(float min, float max)
 822 {
 823         // Restart conversion if one is enabled and uses a calculated threshold
 824         if ((conversion_type_ != NoConversion) &&
 825                 (get_current_conversion_preset() == DynamicPreset))
 826                 start_conversion(true);
 827
 828         min_max_changed(min, max);
 829 }
 830
 831 void SignalBase::on_capture_state_changed(int state)
 832 {
 833         if (state == Session::Running) {
 834                 // Restart conversion if one is enabled
 835                 if (conversion_type_ != NoConversion)
 836                         start_conversion();
 837         }
 838 }
 839
 840 void SignalBase::on_delayed_conversion_start()
 841 {
 842         start_conversion();
 843 }
 844
 845 } // namespace data
 846 } // namespace pv