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
  93 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
  94         channel_(channel),
  95         channel_type_(channel_type),
  96         group_(nullptr),
  97         conversion_type_(NoConversion),
  98         min_value_(0),
  99         max_value_(0)
 100 {
 101         if (channel_) {
 102                 internal_name_ = QString::fromStdString(channel_->name());
 103                 index_ = channel_->index();
 104         }
 105
 106         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
 107                 this, SLOT(on_delayed_conversion_start()));
 108         delayed_conversion_starter_.setSingleShot(true);
 109         delayed_conversion_starter_.setInterval(ConversionDelay);
 110 }
 111
 112 SignalBase::~SignalBase()
 113 {
 114         stop_conversion();
 115 }
 116
 117 shared_ptr<sigrok::Channel> SignalBase::channel() const
 118 {
 119         return channel_;
 120 }
 121
 122 bool SignalBase::enabled() const
 123 {
 124         return (channel_) ? channel_->enabled() : true;
 125 }
 126
 127 void SignalBase::set_enabled(bool value)
 128 {
 129         if (channel_) {
 130                 channel_->set_enabled(value);
 131                 enabled_changed(value);
 132         }
 133 }
 134
 135 SignalBase::ChannelType SignalBase::type() const
 136 {
 137         return channel_type_;
 138 }
 139
 140 unsigned int SignalBase::index() const
 141 {
 142         return index_;
 143 }
 144
 145 void SignalBase::set_index(unsigned int index)
 146 {
 147         index_ = index;
 148 }
 149
 150 unsigned int SignalBase::logic_bit_index() const
 151 {
 152         if (channel_type_ == LogicChannel)
 153                 return index_;
 154         else
 155                 return 0;
 156 }
 157
 158 void SignalBase::set_group(SignalGroup* group)
 159 {
 160         group_ = group;
 161 }
 162
 163 SignalGroup* SignalBase::group() const
 164 {
 165         return group_;
 166 }
 167
 168 QString SignalBase::name() const
 169 {
 170         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
 171 }
 172
 173 QString SignalBase::internal_name() const
 174 {
 175         return internal_name_;
 176 }
 177
 178 void SignalBase::set_internal_name(QString internal_name)
 179 {
 180         internal_name_ = internal_name;
 181 }
 182
 183 QString SignalBase::display_name() const
 184 {
 185         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 186                 return name() + " (" + internal_name_ + ")";
 187         else
 188                 return name();
 189 }
 190
 191 void SignalBase::set_name(QString name)
 192 {
 193         if (channel_)
 194                 channel_->set_name(name.toUtf8().constData());
 195
 196         name_ = name;
 197
 198         name_changed(name);
 199 }
 200
 201 QColor SignalBase::color() const
 202 {
 203         return color_;
 204 }
 205
 206 void SignalBase::set_color(QColor color)
 207 {
 208         color_ = color;
 209
 210         bgcolor_ = color;
 211         bgcolor_.setAlpha(ColorBGAlpha);
 212
 213         color_changed(color);
 214 }
 215
 216 QColor SignalBase::bgcolor() const
 217 {
 218         return bgcolor_;
 219 }
 220
 221 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 222 {
 223         if (data_) {
 224                 disconnect(data.get(), SIGNAL(samples_cleared()),
 225                         this, SLOT(on_samples_cleared()));
 226                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 227                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 228
 229                 if (channel_type_ == AnalogChannel) {
 230                         shared_ptr<Analog> analog = analog_data();
 231                         assert(analog);
 232
 233                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 234                                 this, SLOT(on_min_max_changed(float, float)));
 235                 }
 236         }
 237
 238         data_ = data;
 239
 240         if (data_) {
 241                 connect(data.get(), SIGNAL(samples_cleared()),
 242                         this, SLOT(on_samples_cleared()));
 243                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 244                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 245
 246                 if (channel_type_ == AnalogChannel) {
 247                         shared_ptr<Analog> analog = analog_data();
 248                         assert(analog);
 249
 250                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 251                                 this, SLOT(on_min_max_changed(float, float)));
 252                 }
 253         }
 254 }
 255
 256 void SignalBase::clear_sample_data()
 257 {
 258         if (analog_data())
 259                 analog_data()->clear();
 260
 261         if (logic_data())
 262                 logic_data()->clear();
 263 }
 264
 265 shared_ptr<data::Analog> SignalBase::analog_data() const
 266 {
 267         shared_ptr<Analog> result = nullptr;
 268
 269         if (channel_type_ == AnalogChannel)
 270                 result = dynamic_pointer_cast<Analog>(data_);
 271
 272         return result;
 273 }
 274
 275 shared_ptr<data::Logic> SignalBase::logic_data() const
 276 {
 277         shared_ptr<Logic> result = nullptr;
 278
 279         if (channel_type_ == LogicChannel)
 280                 result = dynamic_pointer_cast<Logic>(data_);
 281
 282         if (((conversion_type_ == A2LConversionByThreshold) ||
 283                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 284                 result = dynamic_pointer_cast<Logic>(converted_data_);
 285
 286         return result;
 287 }
 288
 289 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 290 {
 291         bool result = true;
 292
 293         if (channel_type_ == AnalogChannel)
 294         {
 295                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 296                 auto segments = data->analog_segments();
 297                 try {
 298                         result = segments.at(segment_id)->is_complete();
 299                 } catch (out_of_range&) {
 300                         // Do nothing
 301                 }
 302         }
 303
 304         if (channel_type_ == LogicChannel)
 305         {
 306                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 307                 auto segments = data->logic_segments();
 308                 try {
 309                         result = segments.at(segment_id)->is_complete();
 310                 } catch (out_of_range&) {
 311                         // Do nothing
 312                 }
 313         }
 314
 315         return result;
 316 }
 317
 318 bool SignalBase::has_samples() const
 319 {
 320         bool result = false;
 321
 322         if (channel_type_ == AnalogChannel)
 323         {
 324                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 325                 if (data) {
 326                         auto segments = data->analog_segments();
 327                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 328                                 result = true;
 329                 }
 330         }
 331
 332         if (channel_type_ == LogicChannel)
 333         {
 334                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 335                 if (data) {
 336                         auto segments = data->logic_segments();
 337                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 338                                 result = true;
 339                 }
 340         }
 341
 342         return result;
 343 }
 344
 345 double SignalBase::get_samplerate() const
 346 {
 347         if (channel_type_ == AnalogChannel)
 348         {
 349                 shared_ptr<Analog> data = dynamic_pointer_cast<Analog>(data_);
 350                 if (data)
 351                         return data->get_samplerate();
 352         }
 353
 354         if (channel_type_ == LogicChannel)
 355         {
 356                 shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 357                 if (data)
 358                         return data->get_samplerate();
 359         }
 360
 361         // Default samplerate is 1 Hz
 362         return 1.0;
 363 }
 364
 365 SignalBase::ConversionType SignalBase::get_conversion_type() const
 366 {
 367         return conversion_type_;
 368 }
 369
 370 void SignalBase::set_conversion_type(ConversionType t)
 371 {
 372         if (conversion_type_ != NoConversion) {
 373                 stop_conversion();
 374
 375                 // Discard converted data
 376                 converted_data_.reset();
 377                 samples_cleared();
 378         }
 379
 380         conversion_type_ = t;
 381
 382         // Re-create an empty container
 383         // so that the signal is recognized as providing logic data
 384         // and thus can be assigned to a decoder
 385         if (conversion_is_a2l())
 386                 if (!converted_data_)
 387                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 388
 389         start_conversion();
 390
 391         conversion_type_changed(t);
 392 }
 393
 394 map<QString, QVariant> SignalBase::get_conversion_options() const
 395 {
 396         return conversion_options_;
 397 }
 398
 399 bool SignalBase::set_conversion_option(QString key, QVariant value)
 400 {
 401         QVariant old_value;
 402
 403         auto key_iter = conversion_options_.find(key);
 404         if (key_iter != conversion_options_.end())
 405                 old_value = key_iter->second;
 406
 407         conversion_options_[key] = value;
 408
 409         return (value != old_value);
 410 }
 411
 412 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 413         const bool always_custom) const
 414 {
 415         vector<double> result;
 416         ConversionType conv_type = t;
 417         ConversionPreset preset;
 418
 419         // Use currently active conversion if no conversion type was supplied
 420         if (conv_type == NoConversion)
 421                 conv_type = conversion_type_;
 422
 423         if (always_custom)
 424                 preset = NoPreset;
 425         else
 426                 preset = get_current_conversion_preset();
 427
 428         if (conv_type == A2LConversionByThreshold) {
 429                 double thr = 0;
 430
 431                 if (preset == NoPreset) {
 432                         auto thr_iter = conversion_options_.find("threshold_value");
 433                         if (thr_iter != conversion_options_.end())
 434                                 thr = (thr_iter->second).toDouble();
 435                 }
 436
 437                 if (preset == DynamicPreset)
 438                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 439
 440                 if ((int)preset == 1) thr = 0.9;
 441                 if ((int)preset == 2) thr = 1.8;
 442                 if ((int)preset == 3) thr = 2.5;
 443                 if ((int)preset == 4) thr = 1.5;
 444
 445                 result.push_back(thr);
 446         }
 447
 448         if (conv_type == A2LConversionBySchmittTrigger) {
 449                 double thr_lo = 0, thr_hi = 0;
 450
 451                 if (preset == NoPreset) {
 452                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 453                         if (thr_lo_iter != conversion_options_.end())
 454                                 thr_lo = (thr_lo_iter->second).toDouble();
 455
 456                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 457                         if (thr_hi_iter != conversion_options_.end())
 458                                 thr_hi = (thr_hi_iter->second).toDouble();
 459                 }
 460
 461                 if (preset == DynamicPreset) {
 462                         const double amplitude = max_value_ - min_value_;
 463                         const double center = min_value_ + (amplitude / 2);
 464                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 465                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 466                 }
 467
 468                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 469                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 470                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 471                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 472
 473                 result.push_back(thr_lo);
 474                 result.push_back(thr_hi);
 475         }
 476
 477         return result;
 478 }
 479
 480 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 481 {
 482         vector< pair<QString, int> > presets;
 483
 484         if (conversion_type_ == A2LConversionByThreshold) {
 485                 // Source: http://www.interfacebus.com/voltage_threshold.html
 486                 presets.emplace_back(tr("Signal average"), 0);
 487                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 488                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 489                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 490                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 491         }
 492
 493         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 494                 // Source: http://www.interfacebus.com/voltage_threshold.html
 495                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 496                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 497                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 498                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 499                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 500         }
 501
 502         return presets;
 503 }
 504
 505 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 506 {
 507         auto preset = conversion_options_.find("preset");
 508         if (preset != conversion_options_.end())
 509                 return (ConversionPreset)((preset->second).toInt());
 510
 511         return DynamicPreset;
 512 }
 513
 514 void SignalBase::set_conversion_preset(ConversionPreset id)
 515 {
 516         conversion_options_["preset"] = (int)id;
 517 }
 518
 519 #ifdef ENABLE_DECODE
 520 bool SignalBase::is_decode_signal() const
 521 {
 522         return (channel_type_ == DecodeChannel);
 523 }
 524 #endif
 525
 526 void SignalBase::save_settings(QSettings &settings) const
 527 {
 528         settings.setValue("name", name());
 529         settings.setValue("enabled", enabled());
 530         settings.setValue("color", color().rgba());
 531         settings.setValue("conversion_type", (int)conversion_type_);
 532
 533         settings.setValue("conv_options", (int)(conversion_options_.size()));
 534         int i = 0;
 535         for (auto& kvp : conversion_options_) {
 536                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 537                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 538                 i++;
 539         }
 540 }
 541
 542 void SignalBase::restore_settings(QSettings &settings)
 543 {
 544         if (settings.contains("name"))
 545                 set_name(settings.value("name").toString());
 546
 547         if (settings.contains("enabled"))
 548                 set_enabled(settings.value("enabled").toBool());
 549
 550         if (settings.contains("color")) {
 551                 QVariant value = settings.value("color");
 552
 553                 // Workaround for Qt QColor serialization bug on OSX
 554                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 555                         set_color(value.value<QColor>());
 556                 else
 557                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 558
 559                 // A color with an alpha value of 0 makes the signal marker invisible
 560                 if (color() == QColor(0, 0, 0, 0))
 561                         set_color(Qt::gray);
 562         }
 563
 564         if (settings.contains("conversion_type"))
 565                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 566
 567         int conv_options = 0;
 568         if (settings.contains("conv_options"))
 569                 conv_options = settings.value("conv_options").toInt();
 570
 571         if (conv_options)
 572                 for (int i = 0; i < conv_options; i++) {
 573                         const QString key_id = QString("conv_option%1_key").arg(i);
 574                         const QString value_id = QString("conv_option%1_value").arg(i);
 575
 576                         if (settings.contains(key_id) && settings.contains(value_id))
 577                                 conversion_options_[settings.value(key_id).toString()] =
 578                                         settings.value(value_id);
 579                 }
 580 }
 581
 582 bool SignalBase::conversion_is_a2l() const
 583 {
 584         return ((channel_type_ == AnalogChannel) &&
 585                 ((conversion_type_ == A2LConversionByThreshold) ||
 586                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 587 }
 588
 589 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
 590         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
 591 {
 592         if (end_sample > start_sample) {
 593                 tie(min_value_, max_value_) = asegment->get_min_max();
 594
 595                 // Create sigrok::Analog instance
 596                 float *asamples = new float[ConversionBlockSize];
 597                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 598
 599                 vector<shared_ptr<sigrok::Channel> > channels;
 600                 channels.push_back(channel_);
 601
 602                 vector<const sigrok::QuantityFlag*> mq_flags;
 603                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 604                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 605
 606                 shared_ptr<sigrok::Packet> packet =
 607                         Session::sr_context->create_analog_packet(channels,
 608                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 609
 610                 shared_ptr<sigrok::Analog> analog =
 611                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 612
 613                 // Convert
 614                 uint64_t i = start_sample;
 615
 616                 if (conversion_type_ == A2LConversionByThreshold) {
 617                         const double threshold = get_conversion_thresholds()[0];
 618
 619                         // Convert as many sample blocks as we can
 620                         while ((end_sample - i) > ConversionBlockSize) {
 621                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 622
 623                                 shared_ptr<sigrok::Logic> logic =
 624                                         analog->get_logic_via_threshold(threshold, lsamples);
 625
 626                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 627                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 628                                 i += ConversionBlockSize;
 629                         }
 630
 631                         // Re-create sigrok::Analog and convert remaining samples
 632                         packet = Session::sr_context->create_analog_packet(channels,
 633                                 asamples, end_sample - i, mq, unit, mq_flags);
 634
 635                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 636
 637                         asegment->get_samples(i, end_sample, asamples);
 638                         shared_ptr<sigrok::Logic> logic =
 639                                 analog->get_logic_via_threshold(threshold, lsamples);
 640                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 641                         samples_added(lsegment->segment_id(), i, end_sample);
 642                 }
 643
 644                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 645                         const vector<double> thresholds = get_conversion_thresholds();
 646                         const double lo_thr = thresholds[0];
 647                         const double hi_thr = thresholds[1];
 648
 649                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 650
 651                         // Convert as many sample blocks as we can
 652                         while ((end_sample - i) > ConversionBlockSize) {
 653                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 654
 655                                 shared_ptr<sigrok::Logic> logic =
 656                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 657                                                 &state, lsamples);
 658
 659                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 660                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 661                                 i += ConversionBlockSize;
 662                         }
 663
 664                         // Re-create sigrok::Analog and convert remaining samples
 665                         packet = Session::sr_context->create_analog_packet(channels,
 666                                 asamples, end_sample - i, mq, unit, mq_flags);
 667
 668                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 669
 670                         asegment->get_samples(i, end_sample, asamples);
 671                         shared_ptr<sigrok::Logic> logic =
 672                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 673                                         &state, lsamples);
 674                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 675                         samples_added(lsegment->segment_id(), i, end_sample);
 676                 }
 677
 678                 // If acquisition is ongoing, start-/endsample may have changed
 679                 end_sample = asegment->get_sample_count();
 680
 681                 delete[] lsamples;
 682                 delete[] asamples;
 683         }
 684 }
 685
 686 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
 687 {
 688         uint64_t start_sample, end_sample, old_end_sample;
 689         start_sample = end_sample = 0;
 690         bool complete_state, old_complete_state;
 691
 692         start_sample = lsegment->get_sample_count();
 693         end_sample = asegment->get_sample_count();
 694         complete_state = asegment->is_complete();
 695
 696         // Don't do anything if the segment is still being filled and the sample count is too small
 697         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 698                 return;
 699
 700         do {
 701                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 702
 703                 old_end_sample = end_sample;
 704                 old_complete_state = complete_state;
 705
 706                 start_sample = lsegment->get_sample_count();
 707                 end_sample = asegment->get_sample_count();
 708                 complete_state = asegment->is_complete();
 709
 710                 // If the segment has been incomplete when we were called and has been
 711                 // completed in the meanwhile, we convert the remaining samples as well.
 712                 // Also, if a sufficient number of samples was added in the meanwhile,
 713                 // we do another round of sample conversion.
 714         } while ((complete_state != old_complete_state) ||
 715                 (end_sample - old_end_sample >= ConversionBlockSize));
 716 }
 717
 718 void SignalBase::conversion_thread_proc()
 719 {
 720         shared_ptr<Analog> analog_data;
 721
 722         if (conversion_is_a2l()) {
 723                 analog_data = dynamic_pointer_cast<Analog>(data_);
 724
 725                 if (analog_data->analog_segments().size() == 0) {
 726                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 727                         conversion_input_cond_.wait(input_lock);
 728                 }
 729
 730         } else
 731                 // Currently, we only handle A2L conversions
 732                 return;
 733
 734         // If we had to wait for input data, we may have been notified to terminate
 735         if (conversion_interrupt_)
 736                 return;
 737
 738         uint32_t segment_id = 0;
 739
 740         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 741         assert(asegment);
 742
 743         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 744         assert(logic_data);
 745
 746         // Create the initial logic data segment if needed
 747         if (logic_data->logic_segments().size() == 0) {
 748                 shared_ptr<LogicSegment> new_segment =
 749                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 750                 logic_data->push_segment(new_segment);
 751         }
 752
 753         LogicSegment *lsegment = logic_data->logic_segments().front().get();
 754         assert(lsegment);
 755
 756         do {
 757                 convert_single_segment(asegment, lsegment);
 758
 759                 // Only advance to next segment if the current input segment is complete
 760                 if (asegment->is_complete() &&
 761                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 762                         // There are more segments to process
 763                         segment_id++;
 764
 765                         try {
 766                                 asegment = analog_data->analog_segments().at(segment_id).get();
 767                         } catch (out_of_range&) {
 768                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 769                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 770                                 return;
 771                         }
 772
 773                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 774                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 775                         logic_data->push_segment(new_segment);
 776
 777                         lsegment = logic_data->logic_segments().back().get();
 778                 } else {
 779                         // No more samples/segments to process, wait for data or interrupt
 780                         if (!conversion_interrupt_) {
 781                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 782                                 conversion_input_cond_.wait(input_lock);
 783                         }
 784                 }
 785         } while (!conversion_interrupt_);
 786 }
 787
 788 void SignalBase::start_conversion(bool delayed_start)
 789 {
 790         if (delayed_start) {
 791                 delayed_conversion_starter_.start();
 792                 return;
 793         }
 794
 795         stop_conversion();
 796
 797         if (converted_data_)
 798                 converted_data_->clear();
 799         samples_cleared();
 800
 801         conversion_interrupt_ = false;
 802         conversion_thread_ = std::thread(
 803                 &SignalBase::conversion_thread_proc, this);
 804 }
 805
 806 void SignalBase::stop_conversion()
 807 {
 808         // Stop conversion so we can restart it from the beginning
 809         conversion_interrupt_ = true;
 810         conversion_input_cond_.notify_one();
 811         if (conversion_thread_.joinable())
 812                 conversion_thread_.join();
 813 }
 814
 815 void SignalBase::on_samples_cleared()
 816 {
 817         if (converted_data_)
 818                 converted_data_->clear();
 819
 820         samples_cleared();
 821 }
 822
 823 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 824         uint64_t end_sample)
 825 {
 826         if (conversion_type_ != NoConversion) {
 827                 if (conversion_thread_.joinable()) {
 828                         // Notify the conversion thread since it's running
 829                         conversion_input_cond_.notify_one();
 830                 } else {
 831                         // Start the conversion thread unless the delay timer is running
 832                         if (!delayed_conversion_starter_.isActive())
 833                                 start_conversion();
 834                 }
 835         }
 836
 837         samples_added(segment->segment_id(), start_sample, end_sample);
 838 }
 839
 840 void SignalBase::on_min_max_changed(float min, float max)
 841 {
 842         // Restart conversion if one is enabled and uses a calculated threshold
 843         if ((conversion_type_ != NoConversion) &&
 844                 (get_current_conversion_preset() == DynamicPreset))
 845                 start_conversion(true);
 846
 847         min_max_changed(min, max);
 848 }
 849
 850 void SignalBase::on_capture_state_changed(int state)
 851 {
 852         if (state == Session::Running) {
 853                 // Restart conversion if one is enabled
 854                 if (conversion_type_ != NoConversion)
 855                         start_conversion();
 856         }
 857 }
 858
 859 void SignalBase::on_delayed_conversion_start()
 860 {
 861         start_conversion();
 862 }
 863
 864 } // namespace data
 865 } // namespace pv