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 <extdef.h>
  32 #include <pv/session.hpp>
  33 #include <pv/binding/decoder.hpp>
  34
  35 using std::dynamic_pointer_cast;
  36 using std::make_shared;
  37 using std::out_of_range;
  38 using std::shared_ptr;
  39 using std::tie;
  40 using std::unique_lock;
  41
  42 namespace pv {
  43 namespace data {
  44
  45 const QColor SignalBase::AnalogSignalColors[8] =
  46 {
  47         QColor(0xC4, 0xA0, 0x00),       // Yellow   HSV:  49 / 100 / 77
  48         QColor(0x87, 0x20, 0x7A),       // Magenta  HSV: 308 /  70 / 53
  49         QColor(0x20, 0x4A, 0x87),       // Blue     HSV: 216 /  76 / 53
  50         QColor(0x4E, 0x9A, 0x06),       // Green    HSV:  91 /  96 / 60
  51         QColor(0xBF, 0x6E, 0x00),       // Orange   HSV:  35 / 100 / 75
  52         QColor(0x5E, 0x20, 0x80),       // Purple   HSV: 280 /  75 / 50
  53         QColor(0x20, 0x80, 0x7A),       // Turqoise HSV: 177 /  75 / 50
  54         QColor(0x80, 0x20, 0x24)        // Red      HSV: 358 /  75 / 50
  55 };
  56
  57 const QColor SignalBase::LogicSignalColors[10] =
  58 {
  59         QColor(0x16, 0x19, 0x1A),       // Black
  60         QColor(0x8F, 0x52, 0x02),       // Brown
  61         QColor(0xCC, 0x00, 0x00),       // Red
  62         QColor(0xF5, 0x79, 0x00),       // Orange
  63         QColor(0xED, 0xD4, 0x00),       // Yellow
  64         QColor(0x73, 0xD2, 0x16),       // Green
  65         QColor(0x34, 0x65, 0xA4),       // Blue
  66         QColor(0x75, 0x50, 0x7B),       // Violet
  67         QColor(0x88, 0x8A, 0x85),       // Grey
  68         QColor(0xEE, 0xEE, 0xEC),       // White
  69 };
  70
  71
  72 const int SignalBase::ColorBGAlpha = 8 * 256 / 100;
  73 const uint64_t SignalBase::ConversionBlockSize = 4096;
  74 const uint32_t SignalBase::ConversionDelay = 1000;  // 1 second
  75
  76
  77 SignalGroup::SignalGroup(const QString& name)
  78 {
  79         name_ = name;
  80 }
  81
  82 void SignalGroup::append_signal(shared_ptr<SignalBase> signal)
  83 {
  84         if (!signal)
  85                 return;
  86
  87         signals_.push_back(signal);
  88         signal->set_group(this);
  89 }
  90
  91 void SignalGroup::remove_signal(shared_ptr<SignalBase> signal)
  92 {
  93         if (!signal)
  94                 return;
  95
  96         signals_.erase(std::remove_if(signals_.begin(), signals_.end(),
  97                 [&](shared_ptr<SignalBase> s) { return s == signal; }),
  98                 signals_.end());
  99 }
 100
 101 deque<shared_ptr<SignalBase>> SignalGroup::signals() const
 102 {
 103         return signals_;
 104 }
 105
 106 void SignalGroup::clear()
 107 {
 108         for (shared_ptr<SignalBase> sb : signals_)
 109                 sb->set_group(nullptr);
 110
 111         signals_.clear();
 112 }
 113
 114 const QString SignalGroup::name() const
 115 {
 116         return name_;
 117 }
 118
 119
 120 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
 121         channel_(channel),
 122         channel_type_(channel_type),
 123         group_(nullptr),
 124         conversion_type_(NoConversion),
 125         min_value_(0),
 126         max_value_(0)
 127 {
 128         if (channel_) {
 129                 internal_name_ = QString::fromStdString(channel_->name());
 130                 index_ = channel_->index();
 131         }
 132
 133         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
 134                 this, SLOT(on_delayed_conversion_start()));
 135         delayed_conversion_starter_.setSingleShot(true);
 136         delayed_conversion_starter_.setInterval(ConversionDelay);
 137
 138         // Only logic and analog SR channels can have their colors auto-set
 139         // because for them, we have an index that can be used
 140         if (channel_type == LogicChannel)
 141                 set_color(LogicSignalColors[index() % countof(LogicSignalColors)]);
 142         else if (channel_type == AnalogChannel)
 143                 set_color(AnalogSignalColors[index() % countof(AnalogSignalColors)]);
 144 }
 145
 146 SignalBase::~SignalBase()
 147 {
 148         stop_conversion();
 149 }
 150
 151 shared_ptr<sigrok::Channel> SignalBase::channel() const
 152 {
 153         return channel_;
 154 }
 155
 156 bool SignalBase::is_generated() const
 157 {
 158         // Only signals associated with a device have a corresponding sigrok channel
 159         return channel_ == nullptr;
 160 }
 161
 162 bool SignalBase::enabled() const
 163 {
 164         return (channel_) ? channel_->enabled() : true;
 165 }
 166
 167 void SignalBase::set_enabled(bool value)
 168 {
 169         if (channel_) {
 170                 channel_->set_enabled(value);
 171                 enabled_changed(value);
 172         }
 173 }
 174
 175 SignalBase::ChannelType SignalBase::type() const
 176 {
 177         return channel_type_;
 178 }
 179
 180 unsigned int SignalBase::index() const
 181 {
 182         return index_;
 183 }
 184
 185 void SignalBase::set_index(unsigned int index)
 186 {
 187         index_ = index;
 188 }
 189
 190 unsigned int SignalBase::logic_bit_index() const
 191 {
 192         if (channel_type_ == LogicChannel)
 193                 return index_;
 194         else
 195                 return 0;
 196 }
 197
 198 void SignalBase::set_group(SignalGroup* group)
 199 {
 200         group_ = group;
 201 }
 202
 203 SignalGroup* SignalBase::group() const
 204 {
 205         return group_;
 206 }
 207
 208 QString SignalBase::name() const
 209 {
 210         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
 211 }
 212
 213 QString SignalBase::internal_name() const
 214 {
 215         return internal_name_;
 216 }
 217
 218 void SignalBase::set_internal_name(QString internal_name)
 219 {
 220         internal_name_ = internal_name;
 221 }
 222
 223 QString SignalBase::display_name() const
 224 {
 225         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 226                 return name() + " (" + internal_name_ + ")";
 227         else
 228                 return name();
 229 }
 230
 231 void SignalBase::set_name(QString name)
 232 {
 233         if (channel_)
 234                 channel_->set_name(name.toUtf8().constData());
 235
 236         name_ = name;
 237
 238         name_changed(name);
 239 }
 240
 241 QColor SignalBase::color() const
 242 {
 243         return color_;
 244 }
 245
 246 void SignalBase::set_color(QColor color)
 247 {
 248         color_ = color;
 249
 250         bgcolor_ = color;
 251         bgcolor_.setAlpha(ColorBGAlpha);
 252
 253         color_changed(color);
 254 }
 255
 256 QColor SignalBase::bgcolor() const
 257 {
 258         return bgcolor_;
 259 }
 260
 261 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 262 {
 263         if (data_) {
 264                 disconnect(data.get(), SIGNAL(samples_cleared()),
 265                         this, SLOT(on_samples_cleared()));
 266                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 267                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 268
 269                 shared_ptr<Analog> analog = analog_data();
 270                 if (analog)
 271                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 272                                 this, SLOT(on_min_max_changed(float, float)));
 273         }
 274
 275         data_ = data;
 276
 277         if (data_) {
 278                 connect(data.get(), SIGNAL(samples_cleared()),
 279                         this, SLOT(on_samples_cleared()));
 280                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 281                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 282
 283                 shared_ptr<Analog> analog = analog_data();
 284                 if (analog)
 285                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 286                                 this, SLOT(on_min_max_changed(float, float)));
 287         }
 288 }
 289
 290 void SignalBase::clear_sample_data()
 291 {
 292         if (analog_data())
 293                 analog_data()->clear();
 294
 295         if (logic_data())
 296                 logic_data()->clear();
 297 }
 298
 299 shared_ptr<data::Analog> SignalBase::analog_data() const
 300 {
 301         return dynamic_pointer_cast<Analog>(data_);
 302 }
 303
 304 shared_ptr<data::Logic> SignalBase::logic_data() const
 305 {
 306         shared_ptr<Logic> result = dynamic_pointer_cast<Logic>(data_);
 307
 308         if (((conversion_type_ == A2LConversionByThreshold) ||
 309                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 310                 result = dynamic_pointer_cast<Logic>(converted_data_);
 311
 312         return result;
 313 }
 314
 315 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 316 {
 317         bool result = true;
 318
 319         shared_ptr<Analog> adata = analog_data();
 320         if (adata)
 321         {
 322                 auto segments = adata->analog_segments();
 323                 try {
 324                         result = segments.at(segment_id)->is_complete();
 325                 } catch (out_of_range&) {
 326                         // Do nothing
 327                 }
 328         } else {
 329                 shared_ptr<Logic> ldata = logic_data();
 330                 if (ldata) {
 331                         shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 332                         auto segments = data->logic_segments();
 333                         try {
 334                                 result = segments.at(segment_id)->is_complete();
 335                         } catch (out_of_range&) {
 336                                 // Do nothing
 337                         }
 338                 }
 339         }
 340
 341         return result;
 342 }
 343
 344 bool SignalBase::has_samples() const
 345 {
 346         bool result = false;
 347
 348         shared_ptr<Analog> adata = analog_data();
 349         if (adata)
 350         {
 351                 auto segments = adata->analog_segments();
 352                 if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 353                         result = true;
 354         } else {
 355                 shared_ptr<Logic> ldata = logic_data();
 356                 if (ldata) {
 357                         auto segments = ldata->logic_segments();
 358                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 359                                 result = true;
 360                 }
 361         }
 362
 363         return result;
 364 }
 365
 366 double SignalBase::get_samplerate() const
 367 {
 368         shared_ptr<Analog> adata = analog_data();
 369         if (adata)
 370                 return adata->get_samplerate();
 371         else {
 372                 shared_ptr<Logic> ldata = logic_data();
 373                 if (ldata)
 374                         return ldata->get_samplerate();
 375         }
 376
 377         // Default samplerate is 1 Hz
 378         return 1.0;
 379 }
 380
 381 SignalBase::ConversionType SignalBase::get_conversion_type() const
 382 {
 383         return conversion_type_;
 384 }
 385
 386 void SignalBase::set_conversion_type(ConversionType t)
 387 {
 388         if (conversion_type_ != NoConversion) {
 389                 stop_conversion();
 390
 391                 // Discard converted data
 392                 converted_data_.reset();
 393                 samples_cleared();
 394         }
 395
 396         conversion_type_ = t;
 397
 398         // Re-create an empty container
 399         // so that the signal is recognized as providing logic data
 400         // and thus can be assigned to a decoder
 401         if (conversion_is_a2l())
 402                 if (!converted_data_)
 403                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 404
 405         start_conversion();
 406
 407         conversion_type_changed(t);
 408 }
 409
 410 map<QString, QVariant> SignalBase::get_conversion_options() const
 411 {
 412         return conversion_options_;
 413 }
 414
 415 bool SignalBase::set_conversion_option(QString key, QVariant value)
 416 {
 417         QVariant old_value;
 418
 419         auto key_iter = conversion_options_.find(key);
 420         if (key_iter != conversion_options_.end())
 421                 old_value = key_iter->second;
 422
 423         conversion_options_[key] = value;
 424
 425         return (value != old_value);
 426 }
 427
 428 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 429         const bool always_custom) const
 430 {
 431         vector<double> result;
 432         ConversionType conv_type = t;
 433         ConversionPreset preset;
 434
 435         // Use currently active conversion if no conversion type was supplied
 436         if (conv_type == NoConversion)
 437                 conv_type = conversion_type_;
 438
 439         if (always_custom)
 440                 preset = NoPreset;
 441         else
 442                 preset = get_current_conversion_preset();
 443
 444         if (conv_type == A2LConversionByThreshold) {
 445                 double thr = 0;
 446
 447                 if (preset == NoPreset) {
 448                         auto thr_iter = conversion_options_.find("threshold_value");
 449                         if (thr_iter != conversion_options_.end())
 450                                 thr = (thr_iter->second).toDouble();
 451                 }
 452
 453                 if (preset == DynamicPreset)
 454                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 455
 456                 if ((int)preset == 1) thr = 0.9;
 457                 if ((int)preset == 2) thr = 1.8;
 458                 if ((int)preset == 3) thr = 2.5;
 459                 if ((int)preset == 4) thr = 1.5;
 460
 461                 result.push_back(thr);
 462         }
 463
 464         if (conv_type == A2LConversionBySchmittTrigger) {
 465                 double thr_lo = 0, thr_hi = 0;
 466
 467                 if (preset == NoPreset) {
 468                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 469                         if (thr_lo_iter != conversion_options_.end())
 470                                 thr_lo = (thr_lo_iter->second).toDouble();
 471
 472                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 473                         if (thr_hi_iter != conversion_options_.end())
 474                                 thr_hi = (thr_hi_iter->second).toDouble();
 475                 }
 476
 477                 if (preset == DynamicPreset) {
 478                         const double amplitude = max_value_ - min_value_;
 479                         const double center = min_value_ + (amplitude / 2);
 480                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 481                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 482                 }
 483
 484                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 485                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 486                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 487                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 488
 489                 result.push_back(thr_lo);
 490                 result.push_back(thr_hi);
 491         }
 492
 493         return result;
 494 }
 495
 496 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 497 {
 498         vector< pair<QString, int> > presets;
 499
 500         if (conversion_type_ == A2LConversionByThreshold) {
 501                 // Source: http://www.interfacebus.com/voltage_threshold.html
 502                 presets.emplace_back(tr("Signal average"), 0);
 503                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 504                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 505                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 506                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 507         }
 508
 509         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 510                 // Source: http://www.interfacebus.com/voltage_threshold.html
 511                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 512                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 513                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 514                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 515                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 516         }
 517
 518         return presets;
 519 }
 520
 521 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 522 {
 523         auto preset = conversion_options_.find("preset");
 524         if (preset != conversion_options_.end())
 525                 return (ConversionPreset)((preset->second).toInt());
 526
 527         return DynamicPreset;
 528 }
 529
 530 void SignalBase::set_conversion_preset(ConversionPreset id)
 531 {
 532         conversion_options_["preset"] = (int)id;
 533 }
 534
 535 #ifdef ENABLE_DECODE
 536 bool SignalBase::is_decode_signal() const
 537 {
 538         return (channel_type_ == DecodeChannel);
 539 }
 540 #endif
 541
 542 void SignalBase::save_settings(QSettings &settings) const
 543 {
 544         settings.setValue("name", name());
 545         settings.setValue("enabled", enabled());
 546         settings.setValue("color", color().rgba());
 547         settings.setValue("conversion_type", (int)conversion_type_);
 548
 549         settings.setValue("conv_options", (int)(conversion_options_.size()));
 550         int i = 0;
 551         for (auto& kvp : conversion_options_) {
 552                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 553                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 554                 i++;
 555         }
 556 }
 557
 558 void SignalBase::restore_settings(QSettings &settings)
 559 {
 560         if (settings.contains("name"))
 561                 set_name(settings.value("name").toString());
 562
 563         if (settings.contains("enabled"))
 564                 set_enabled(settings.value("enabled").toBool());
 565
 566         if (settings.contains("color")) {
 567                 QVariant value = settings.value("color");
 568
 569                 // Workaround for Qt QColor serialization bug on OSX
 570                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 571                         set_color(value.value<QColor>());
 572                 else
 573                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 574
 575                 // A color with an alpha value of 0 makes the signal marker invisible
 576                 if (color() == QColor(0, 0, 0, 0))
 577                         set_color(Qt::gray);
 578         }
 579
 580         if (settings.contains("conversion_type"))
 581                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 582
 583         int conv_options = 0;
 584         if (settings.contains("conv_options"))
 585                 conv_options = settings.value("conv_options").toInt();
 586
 587         if (conv_options)
 588                 for (int i = 0; i < conv_options; i++) {
 589                         const QString key_id = QString("conv_option%1_key").arg(i);
 590                         const QString value_id = QString("conv_option%1_value").arg(i);
 591
 592                         if (settings.contains(key_id) && settings.contains(value_id))
 593                                 conversion_options_[settings.value(key_id).toString()] =
 594                                         settings.value(value_id);
 595                 }
 596 }
 597
 598 bool SignalBase::conversion_is_a2l() const
 599 {
 600         return (((conversion_type_ == A2LConversionByThreshold) ||
 601                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 602 }
 603
 604 void SignalBase::convert_single_segment_range(AnalogSegment *asegment,
 605         LogicSegment *lsegment, uint64_t start_sample, uint64_t end_sample)
 606 {
 607         if (end_sample > start_sample) {
 608                 tie(min_value_, max_value_) = asegment->get_min_max();
 609
 610                 // Create sigrok::Analog instance
 611                 float *asamples = new float[ConversionBlockSize];
 612                 assert(asamples);
 613                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 614                 assert(lsamples);
 615
 616                 vector<shared_ptr<sigrok::Channel> > channels;
 617                 if (channel_)
 618                         channels.push_back(channel_);
 619
 620                 vector<const sigrok::QuantityFlag*> mq_flags;
 621                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 622                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 623
 624                 shared_ptr<sigrok::Packet> packet =
 625                         Session::sr_context->create_analog_packet(channels,
 626                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 627
 628                 shared_ptr<sigrok::Analog> analog =
 629                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 630
 631                 // Convert
 632                 uint64_t i = start_sample;
 633
 634                 if (conversion_type_ == A2LConversionByThreshold) {
 635                         const double threshold = get_conversion_thresholds()[0];
 636
 637                         // Convert as many sample blocks as we can
 638                         while ((end_sample - i) > ConversionBlockSize) {
 639                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 640
 641                                 shared_ptr<sigrok::Logic> logic =
 642                                         analog->get_logic_via_threshold(threshold, lsamples);
 643
 644                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 645                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 646                                 i += ConversionBlockSize;
 647                         }
 648
 649                         // Re-create sigrok::Analog and convert remaining samples
 650                         packet = Session::sr_context->create_analog_packet(channels,
 651                                 asamples, end_sample - i, mq, unit, mq_flags);
 652
 653                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 654
 655                         asegment->get_samples(i, end_sample, asamples);
 656                         shared_ptr<sigrok::Logic> logic =
 657                                 analog->get_logic_via_threshold(threshold, lsamples);
 658                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 659                         samples_added(lsegment->segment_id(), i, end_sample);
 660                 }
 661
 662                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 663                         const vector<double> thresholds = get_conversion_thresholds();
 664                         const double lo_thr = thresholds[0];
 665                         const double hi_thr = thresholds[1];
 666
 667                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 668
 669                         // Convert as many sample blocks as we can
 670                         while ((end_sample - i) > ConversionBlockSize) {
 671                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 672
 673                                 shared_ptr<sigrok::Logic> logic =
 674                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 675                                                 &state, lsamples);
 676
 677                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 678                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 679                                 i += ConversionBlockSize;
 680                         }
 681
 682                         // Re-create sigrok::Analog and convert remaining samples
 683                         packet = Session::sr_context->create_analog_packet(channels,
 684                                 asamples, end_sample - i, mq, unit, mq_flags);
 685
 686                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 687
 688                         asegment->get_samples(i, end_sample, asamples);
 689                         shared_ptr<sigrok::Logic> logic =
 690                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 691                                         &state, lsamples);
 692                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 693                         samples_added(lsegment->segment_id(), i, end_sample);
 694                 }
 695
 696                 // If acquisition is ongoing, start-/endsample may have changed
 697                 end_sample = asegment->get_sample_count();
 698
 699                 delete[] lsamples;
 700                 delete[] asamples;
 701         }
 702 }
 703
 704 void SignalBase::convert_single_segment(AnalogSegment *asegment, LogicSegment *lsegment)
 705 {
 706         uint64_t start_sample, end_sample, old_end_sample;
 707         start_sample = end_sample = 0;
 708         bool complete_state, old_complete_state;
 709
 710         start_sample = lsegment->get_sample_count();
 711         end_sample = asegment->get_sample_count();
 712         complete_state = asegment->is_complete();
 713
 714         // Don't do anything if the segment is still being filled and the sample count is too small
 715         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 716                 return;
 717
 718         do {
 719                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 720
 721                 old_end_sample = end_sample;
 722                 old_complete_state = complete_state;
 723
 724                 start_sample = lsegment->get_sample_count();
 725                 end_sample = asegment->get_sample_count();
 726                 complete_state = asegment->is_complete();
 727
 728                 // If the segment has been incomplete when we were called and has been
 729                 // completed in the meanwhile, we convert the remaining samples as well.
 730                 // Also, if a sufficient number of samples was added in the meanwhile,
 731                 // we do another round of sample conversion.
 732         } while ((complete_state != old_complete_state) ||
 733                 (end_sample - old_end_sample >= ConversionBlockSize));
 734 }
 735
 736 void SignalBase::conversion_thread_proc()
 737 {
 738         shared_ptr<Analog> analog_data;
 739
 740         if (conversion_is_a2l()) {
 741                 analog_data = dynamic_pointer_cast<Analog>(data_);
 742
 743                 if (analog_data->analog_segments().size() == 0) {
 744                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 745                         conversion_input_cond_.wait(input_lock);
 746                 }
 747
 748         } else
 749                 // Currently, we only handle A2L conversions
 750                 return;
 751
 752         // If we had to wait for input data, we may have been notified to terminate
 753         if (conversion_interrupt_)
 754                 return;
 755
 756         uint32_t segment_id = 0;
 757
 758         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 759         assert(asegment);
 760
 761         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 762         assert(logic_data);
 763
 764         // Create the initial logic data segment if needed
 765         if (logic_data->logic_segments().size() == 0) {
 766                 shared_ptr<LogicSegment> new_segment =
 767                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 768                 logic_data->push_segment(new_segment);
 769         }
 770
 771         LogicSegment *lsegment = logic_data->logic_segments().front().get();
 772         assert(lsegment);
 773
 774         do {
 775                 convert_single_segment(asegment, lsegment);
 776
 777                 // Only advance to next segment if the current input segment is complete
 778                 if (asegment->is_complete() &&
 779                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 780                         // There are more segments to process
 781                         segment_id++;
 782
 783                         try {
 784                                 asegment = analog_data->analog_segments().at(segment_id).get();
 785                         } catch (out_of_range&) {
 786                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 787                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 788                                 return;
 789                         }
 790
 791                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 792                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 793                         logic_data->push_segment(new_segment);
 794
 795                         lsegment = logic_data->logic_segments().back().get();
 796                 } else {
 797                         // No more samples/segments to process, wait for data or interrupt
 798                         if (!conversion_interrupt_) {
 799                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 800                                 conversion_input_cond_.wait(input_lock);
 801                         }
 802                 }
 803         } while (!conversion_interrupt_);
 804 }
 805
 806 void SignalBase::start_conversion(bool delayed_start)
 807 {
 808         if (delayed_start) {
 809                 delayed_conversion_starter_.start();
 810                 return;
 811         }
 812
 813         stop_conversion();
 814
 815         if (converted_data_)
 816                 converted_data_->clear();
 817         samples_cleared();
 818
 819         conversion_interrupt_ = false;
 820         conversion_thread_ = std::thread(
 821                 &SignalBase::conversion_thread_proc, this);
 822 }
 823
 824 void SignalBase::stop_conversion()
 825 {
 826         // Stop conversion so we can restart it from the beginning
 827         conversion_interrupt_ = true;
 828         conversion_input_cond_.notify_one();
 829         if (conversion_thread_.joinable())
 830                 conversion_thread_.join();
 831 }
 832
 833 void SignalBase::on_samples_cleared()
 834 {
 835         if (converted_data_)
 836                 converted_data_->clear();
 837
 838         samples_cleared();
 839 }
 840
 841 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 842         uint64_t end_sample)
 843 {
 844         if (conversion_type_ != NoConversion) {
 845                 if (conversion_thread_.joinable()) {
 846                         // Notify the conversion thread since it's running
 847                         conversion_input_cond_.notify_one();
 848                 } else {
 849                         // Start the conversion thread unless the delay timer is running
 850                         if (!delayed_conversion_starter_.isActive())
 851                                 start_conversion();
 852                 }
 853         }
 854
 855         samples_added(segment->segment_id(), start_sample, end_sample);
 856 }
 857
 858 void SignalBase::on_min_max_changed(float min, float max)
 859 {
 860         // Restart conversion if one is enabled and uses a calculated threshold
 861         if ((conversion_type_ != NoConversion) &&
 862                 (get_current_conversion_preset() == DynamicPreset))
 863                 start_conversion(true);
 864
 865         min_max_changed(min, max);
 866 }
 867
 868 void SignalBase::on_capture_state_changed(int state)
 869 {
 870         if (state == Session::Running) {
 871                 // Restart conversion if one is enabled
 872                 if (conversion_type_ != NoConversion)
 873                         start_conversion();
 874         }
 875 }
 876
 877 void SignalBase::on_delayed_conversion_start()
 878 {
 879         start_conversion();
 880 }
 881
 882 } // namespace data
 883 } // namespace pv