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         error_message_("")
 128 {
 129         if (channel_) {
 130                 set_internal_name(QString::fromStdString(channel_->name()));
 131                 set_index(channel_->index());
 132         }
 133
 134         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
 135                 this, SLOT(on_delayed_conversion_start()));
 136         delayed_conversion_starter_.setSingleShot(true);
 137         delayed_conversion_starter_.setInterval(ConversionDelay);
 138
 139         // Only logic and analog SR channels can have their colors auto-set
 140         // because for them, we have an index that can be used
 141         if (channel_type == LogicChannel)
 142                 set_color(LogicSignalColors[index() % countof(LogicSignalColors)]);
 143         else if (channel_type == AnalogChannel)
 144                 set_color(AnalogSignalColors[index() % countof(AnalogSignalColors)]);
 145 }
 146
 147 SignalBase::~SignalBase()
 148 {
 149         stop_conversion();
 150 }
 151
 152 shared_ptr<sigrok::Channel> SignalBase::channel() const
 153 {
 154         return channel_;
 155 }
 156
 157 bool SignalBase::is_generated() const
 158 {
 159         // Only signals associated with a device have a corresponding sigrok channel
 160         return channel_ == nullptr;
 161 }
 162
 163 bool SignalBase::enabled() const
 164 {
 165         return (channel_) ? channel_->enabled() : true;
 166 }
 167
 168 void SignalBase::set_enabled(bool value)
 169 {
 170         if (channel_) {
 171                 channel_->set_enabled(value);
 172                 enabled_changed(value);
 173         }
 174 }
 175
 176 SignalBase::ChannelType SignalBase::type() const
 177 {
 178         return channel_type_;
 179 }
 180
 181 unsigned int SignalBase::index() const
 182 {
 183         return index_;
 184 }
 185
 186 void SignalBase::set_index(unsigned int index)
 187 {
 188         index_ = index;
 189 }
 190
 191 unsigned int SignalBase::logic_bit_index() const
 192 {
 193         if (channel_type_ == LogicChannel)
 194                 return index_;
 195         else
 196                 return 0;
 197 }
 198
 199 void SignalBase::set_group(SignalGroup* group)
 200 {
 201         group_ = group;
 202 }
 203
 204 SignalGroup* SignalBase::group() const
 205 {
 206         return group_;
 207 }
 208
 209 QString SignalBase::name() const
 210 {
 211         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
 212 }
 213
 214 QString SignalBase::internal_name() const
 215 {
 216         return internal_name_;
 217 }
 218
 219 void SignalBase::set_internal_name(QString internal_name)
 220 {
 221         internal_name_ = internal_name;
 222
 223         // Use this name also for the QObject instance
 224         setObjectName(internal_name);
 225 }
 226
 227 QString SignalBase::display_name() const
 228 {
 229         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 230                 return name() + " (" + internal_name_ + ")";
 231         else
 232                 return name();
 233 }
 234
 235 void SignalBase::set_name(QString name)
 236 {
 237         if (channel_)
 238                 channel_->set_name(name.toUtf8().constData());
 239
 240         name_ = name;
 241
 242         name_changed(name);
 243 }
 244
 245 QColor SignalBase::color() const
 246 {
 247         return color_;
 248 }
 249
 250 void SignalBase::set_color(QColor color)
 251 {
 252         color_ = color;
 253
 254         bgcolor_ = color;
 255         bgcolor_.setAlpha(ColorBGAlpha);
 256
 257         color_changed(color);
 258 }
 259
 260 QColor SignalBase::bgcolor() const
 261 {
 262         return bgcolor_;
 263 }
 264
 265 QString SignalBase::get_error_message() const
 266 {
 267         return error_message_;
 268 }
 269
 270 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 271 {
 272         if (data_) {
 273                 disconnect(data.get(), SIGNAL(samples_cleared()),
 274                         this, SLOT(on_samples_cleared()));
 275                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 276                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 277
 278                 shared_ptr<Analog> analog = analog_data();
 279                 if (analog)
 280                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 281                                 this, SLOT(on_min_max_changed(float, float)));
 282         }
 283
 284         data_ = data;
 285
 286         if (data_) {
 287                 connect(data.get(), SIGNAL(samples_cleared()),
 288                         this, SLOT(on_samples_cleared()));
 289                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 290                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 291
 292                 shared_ptr<Analog> analog = analog_data();
 293                 if (analog)
 294                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 295                                 this, SLOT(on_min_max_changed(float, float)));
 296         }
 297 }
 298
 299 void SignalBase::clear_sample_data()
 300 {
 301         if (analog_data())
 302                 analog_data()->clear();
 303
 304         if (logic_data())
 305                 logic_data()->clear();
 306 }
 307
 308 shared_ptr<data::Analog> SignalBase::analog_data() const
 309 {
 310         if (!data_)
 311                 return nullptr;
 312
 313         return dynamic_pointer_cast<Analog>(data_);
 314 }
 315
 316 shared_ptr<data::Logic> SignalBase::logic_data() const
 317 {
 318         if (!data_)
 319                 return nullptr;
 320
 321         shared_ptr<Logic> result = dynamic_pointer_cast<Logic>(data_);
 322
 323         if (((conversion_type_ == A2LConversionByThreshold) ||
 324                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 325                 result = dynamic_pointer_cast<Logic>(converted_data_);
 326
 327         return result;
 328 }
 329
 330 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 331 {
 332         bool result = true;
 333
 334         shared_ptr<Analog> adata = analog_data();
 335         if (adata)
 336         {
 337                 auto segments = adata->analog_segments();
 338                 try {
 339                         result = segments.at(segment_id)->is_complete();
 340                 } catch (out_of_range&) {
 341                         // Do nothing
 342                 }
 343         } else {
 344                 shared_ptr<Logic> ldata = logic_data();
 345                 if (ldata) {
 346                         shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 347                         auto segments = data->logic_segments();
 348                         try {
 349                                 result = segments.at(segment_id)->is_complete();
 350                         } catch (out_of_range&) {
 351                                 // Do nothing
 352                         }
 353                 }
 354         }
 355
 356         return result;
 357 }
 358
 359 bool SignalBase::has_samples() const
 360 {
 361         bool result = false;
 362
 363         shared_ptr<Analog> adata = analog_data();
 364         if (adata)
 365         {
 366                 auto segments = adata->analog_segments();
 367                 if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 368                         result = true;
 369         } else {
 370                 shared_ptr<Logic> ldata = logic_data();
 371                 if (ldata) {
 372                         auto segments = ldata->logic_segments();
 373                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 374                                 result = true;
 375                 }
 376         }
 377
 378         return result;
 379 }
 380
 381 double SignalBase::get_samplerate() const
 382 {
 383         shared_ptr<Analog> adata = analog_data();
 384         if (adata)
 385                 return adata->get_samplerate();
 386         else {
 387                 shared_ptr<Logic> ldata = logic_data();
 388                 if (ldata)
 389                         return ldata->get_samplerate();
 390         }
 391
 392         // Default samplerate is 1 Hz
 393         return 1.0;
 394 }
 395
 396 SignalBase::ConversionType SignalBase::get_conversion_type() const
 397 {
 398         return conversion_type_;
 399 }
 400
 401 void SignalBase::set_conversion_type(ConversionType t)
 402 {
 403         if (conversion_type_ != NoConversion) {
 404                 stop_conversion();
 405
 406                 // Discard converted data
 407                 converted_data_.reset();
 408                 samples_cleared();
 409         }
 410
 411         conversion_type_ = t;
 412
 413         // Re-create an empty container
 414         // so that the signal is recognized as providing logic data
 415         // and thus can be assigned to a decoder
 416         if (conversion_is_a2l())
 417                 if (!converted_data_)
 418                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 419
 420         start_conversion();
 421
 422         conversion_type_changed(t);
 423 }
 424
 425 map<QString, QVariant> SignalBase::get_conversion_options() const
 426 {
 427         return conversion_options_;
 428 }
 429
 430 bool SignalBase::set_conversion_option(QString key, QVariant value)
 431 {
 432         QVariant old_value;
 433
 434         auto key_iter = conversion_options_.find(key);
 435         if (key_iter != conversion_options_.end())
 436                 old_value = key_iter->second;
 437
 438         conversion_options_[key] = value;
 439
 440         return (value != old_value);
 441 }
 442
 443 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 444         const bool always_custom) const
 445 {
 446         vector<double> result;
 447         ConversionType conv_type = t;
 448         ConversionPreset preset;
 449
 450         // Use currently active conversion if no conversion type was supplied
 451         if (conv_type == NoConversion)
 452                 conv_type = conversion_type_;
 453
 454         if (always_custom)
 455                 preset = NoPreset;
 456         else
 457                 preset = get_current_conversion_preset();
 458
 459         if (conv_type == A2LConversionByThreshold) {
 460                 double thr = 0;
 461
 462                 if (preset == NoPreset) {
 463                         auto thr_iter = conversion_options_.find("threshold_value");
 464                         if (thr_iter != conversion_options_.end())
 465                                 thr = (thr_iter->second).toDouble();
 466                 }
 467
 468                 if (preset == DynamicPreset)
 469                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 470
 471                 if ((int)preset == 1) thr = 0.9;
 472                 if ((int)preset == 2) thr = 1.8;
 473                 if ((int)preset == 3) thr = 2.5;
 474                 if ((int)preset == 4) thr = 1.5;
 475
 476                 result.push_back(thr);
 477         }
 478
 479         if (conv_type == A2LConversionBySchmittTrigger) {
 480                 double thr_lo = 0, thr_hi = 0;
 481
 482                 if (preset == NoPreset) {
 483                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 484                         if (thr_lo_iter != conversion_options_.end())
 485                                 thr_lo = (thr_lo_iter->second).toDouble();
 486
 487                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 488                         if (thr_hi_iter != conversion_options_.end())
 489                                 thr_hi = (thr_hi_iter->second).toDouble();
 490                 }
 491
 492                 if (preset == DynamicPreset) {
 493                         const double amplitude = max_value_ - min_value_;
 494                         const double center = min_value_ + (amplitude / 2);
 495                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 496                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 497                 }
 498
 499                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 500                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 501                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 502                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 503
 504                 result.push_back(thr_lo);
 505                 result.push_back(thr_hi);
 506         }
 507
 508         return result;
 509 }
 510
 511 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 512 {
 513         vector< pair<QString, int> > presets;
 514
 515         if (conversion_type_ == A2LConversionByThreshold) {
 516                 // Source: http://www.interfacebus.com/voltage_threshold.html
 517                 presets.emplace_back(tr("Signal average"), 0);
 518                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 519                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 520                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 521                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 522         }
 523
 524         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 525                 // Source: http://www.interfacebus.com/voltage_threshold.html
 526                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 527                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 528                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 529                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 530                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 531         }
 532
 533         return presets;
 534 }
 535
 536 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 537 {
 538         auto preset = conversion_options_.find("preset");
 539         if (preset != conversion_options_.end())
 540                 return (ConversionPreset)((preset->second).toInt());
 541
 542         return DynamicPreset;
 543 }
 544
 545 void SignalBase::set_conversion_preset(ConversionPreset id)
 546 {
 547         conversion_options_["preset"] = (int)id;
 548 }
 549
 550 #ifdef ENABLE_DECODE
 551 bool SignalBase::is_decode_signal() const
 552 {
 553         return (channel_type_ == DecodeChannel);
 554 }
 555 #endif
 556
 557 void SignalBase::save_settings(QSettings &settings) const
 558 {
 559         settings.setValue("name", name());
 560         settings.setValue("enabled", enabled());
 561         settings.setValue("color", color().rgba());
 562         settings.setValue("conversion_type", (int)conversion_type_);
 563
 564         settings.setValue("conv_options", (int)(conversion_options_.size()));
 565         int i = 0;
 566         for (auto& kvp : conversion_options_) {
 567                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 568                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 569                 i++;
 570         }
 571 }
 572
 573 void SignalBase::restore_settings(QSettings &settings)
 574 {
 575         if (settings.contains("name"))
 576                 set_name(settings.value("name").toString());
 577
 578         if (settings.contains("enabled"))
 579                 set_enabled(settings.value("enabled").toBool());
 580
 581         if (settings.contains("color")) {
 582                 QVariant value = settings.value("color");
 583
 584                 // Workaround for Qt QColor serialization bug on OSX
 585                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 586                         set_color(value.value<QColor>());
 587                 else
 588                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 589
 590                 // A color with an alpha value of 0 makes the signal marker invisible
 591                 if (color() == QColor(0, 0, 0, 0))
 592                         set_color(Qt::gray);
 593         }
 594
 595         if (settings.contains("conversion_type"))
 596                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 597
 598         int conv_options = 0;
 599         if (settings.contains("conv_options"))
 600                 conv_options = settings.value("conv_options").toInt();
 601
 602         if (conv_options)
 603                 for (int i = 0; i < conv_options; i++) {
 604                         const QString key_id = QString("conv_option%1_key").arg(i);
 605                         const QString value_id = QString("conv_option%1_value").arg(i);
 606
 607                         if (settings.contains(key_id) && settings.contains(value_id))
 608                                 conversion_options_[settings.value(key_id).toString()] =
 609                                         settings.value(value_id);
 610                 }
 611 }
 612
 613 bool SignalBase::conversion_is_a2l() const
 614 {
 615         return (((conversion_type_ == A2LConversionByThreshold) ||
 616                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 617 }
 618
 619 void SignalBase::convert_single_segment_range(shared_ptr<AnalogSegment> asegment,
 620         shared_ptr<LogicSegment> lsegment, uint64_t start_sample, uint64_t end_sample)
 621 {
 622         if (end_sample > start_sample) {
 623                 tie(min_value_, max_value_) = asegment->get_min_max();
 624
 625                 // Create sigrok::Analog instance
 626                 float *asamples = new float[ConversionBlockSize];
 627                 assert(asamples);
 628                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 629                 assert(lsamples);
 630
 631                 vector<shared_ptr<sigrok::Channel> > channels;
 632                 if (channel_)
 633                         channels.push_back(channel_);
 634
 635                 vector<const sigrok::QuantityFlag*> mq_flags;
 636                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 637                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 638
 639                 shared_ptr<sigrok::Packet> packet =
 640                         Session::sr_context->create_analog_packet(channels,
 641                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 642
 643                 shared_ptr<sigrok::Analog> analog =
 644                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 645
 646                 // Convert
 647                 uint64_t i = start_sample;
 648
 649                 if (conversion_type_ == A2LConversionByThreshold) {
 650                         const double threshold = get_conversion_thresholds()[0];
 651
 652                         // Convert as many sample blocks as we can
 653                         while ((end_sample - i) > ConversionBlockSize) {
 654                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 655
 656                                 shared_ptr<sigrok::Logic> logic =
 657                                         analog->get_logic_via_threshold(threshold, 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_threshold(threshold, lsamples);
 673                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 674                         samples_added(lsegment->segment_id(), i, end_sample);
 675                 }
 676
 677                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 678                         const vector<double> thresholds = get_conversion_thresholds();
 679                         const double lo_thr = thresholds[0];
 680                         const double hi_thr = thresholds[1];
 681
 682                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 683
 684                         // Convert as many sample blocks as we can
 685                         while ((end_sample - i) > ConversionBlockSize) {
 686                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 687
 688                                 shared_ptr<sigrok::Logic> logic =
 689                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 690                                                 &state, lsamples);
 691
 692                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 693                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 694
 695                                 i += ConversionBlockSize;
 696                         }
 697
 698                         // Re-create sigrok::Analog and convert remaining samples
 699                         packet = Session::sr_context->create_analog_packet(channels,
 700                                 asamples, end_sample - i, mq, unit, mq_flags);
 701
 702                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 703
 704                         asegment->get_samples(i, end_sample, asamples);
 705                         shared_ptr<sigrok::Logic> logic =
 706                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 707                                         &state, lsamples);
 708                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 709                         samples_added(lsegment->segment_id(), i, end_sample);
 710                 }
 711
 712                 // If acquisition is ongoing, start-/endsample may have changed
 713                 end_sample = asegment->get_sample_count();
 714
 715                 delete[] lsamples;
 716                 delete[] asamples;
 717         }
 718 }
 719
 720 void SignalBase::convert_single_segment(shared_ptr<AnalogSegment> asegment,
 721         shared_ptr<LogicSegment> lsegment)
 722 {
 723         uint64_t start_sample, end_sample, old_end_sample;
 724         start_sample = end_sample = 0;
 725         bool complete_state, old_complete_state;
 726
 727         start_sample = lsegment->get_sample_count();
 728         end_sample = asegment->get_sample_count();
 729         complete_state = asegment->is_complete();
 730
 731         // Don't do anything if the segment is still being filled and the sample count is too small
 732         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 733                 return;
 734
 735         do {
 736                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 737
 738                 old_end_sample = end_sample;
 739                 old_complete_state = complete_state;
 740
 741                 start_sample = lsegment->get_sample_count();
 742                 end_sample = asegment->get_sample_count();
 743                 complete_state = asegment->is_complete();
 744
 745                 // If the segment has been incomplete when we were called and has been
 746                 // completed in the meanwhile, we convert the remaining samples as well.
 747                 // Also, if a sufficient number of samples was added in the meanwhile,
 748                 // we do another round of sample conversion.
 749         } while ((complete_state != old_complete_state) ||
 750                 (end_sample - old_end_sample >= ConversionBlockSize));
 751
 752         if (complete_state)
 753                 lsegment->set_complete();
 754 }
 755
 756 void SignalBase::conversion_thread_proc()
 757 {
 758         shared_ptr<Analog> analog_data;
 759
 760         if (conversion_is_a2l()) {
 761                 analog_data = dynamic_pointer_cast<Analog>(data_);
 762
 763                 if (analog_data->analog_segments().size() == 0) {
 764                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 765                         conversion_input_cond_.wait(input_lock);
 766                 }
 767
 768         } else
 769                 // Currently, we only handle A2L conversions
 770                 return;
 771
 772         // If we had to wait for input data, we may have been notified to terminate
 773         if (conversion_interrupt_)
 774                 return;
 775
 776         uint32_t segment_id = 0;
 777
 778         shared_ptr<AnalogSegment> asegment = analog_data->analog_segments().front();
 779         assert(asegment);
 780         connect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 781
 782         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 783         assert(logic_data);
 784
 785         // Create the initial logic data segment if needed
 786         if (logic_data->logic_segments().size() == 0) {
 787                 shared_ptr<LogicSegment> new_segment =
 788                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 789                 logic_data->push_segment(new_segment);
 790         }
 791
 792         shared_ptr<LogicSegment> lsegment = logic_data->logic_segments().front();
 793         assert(lsegment);
 794
 795         do {
 796                 convert_single_segment(asegment, lsegment);
 797
 798                 // Only advance to next segment if the current input segment is complete
 799                 if (asegment->is_complete() &&
 800                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 801
 802                         disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 803
 804                         // There are more segments to process
 805                         segment_id++;
 806
 807                         try {
 808                                 asegment = analog_data->analog_segments().at(segment_id);
 809                                 disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 810                                 connect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 811                         } catch (out_of_range&) {
 812                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 813                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 814                                 return;
 815                         }
 816
 817                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 818                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 819                         logic_data->push_segment(new_segment);
 820
 821                         lsegment = logic_data->logic_segments().back();
 822                 } else {
 823                         // No more samples/segments to process, wait for data or interrupt
 824                         if (!conversion_interrupt_) {
 825                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 826                                 conversion_input_cond_.wait(input_lock);
 827                         }
 828                 }
 829         } while (!conversion_interrupt_);
 830
 831         disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 832 }
 833
 834 void SignalBase::start_conversion(bool delayed_start)
 835 {
 836         if (delayed_start) {
 837                 delayed_conversion_starter_.start();
 838                 return;
 839         }
 840
 841         stop_conversion();
 842
 843         if (converted_data_ && (converted_data_->get_segment_count() > 0)) {
 844                 converted_data_->clear();
 845                 samples_cleared();
 846         }
 847
 848         conversion_interrupt_ = false;
 849         conversion_thread_ = std::thread(&SignalBase::conversion_thread_proc, this);
 850 }
 851
 852 void SignalBase::set_error_message(QString msg)
 853 {
 854         error_message_ = msg;
 855         // TODO Emulate noquote()
 856         qDebug().nospace() << name() << ": " << msg;
 857
 858         error_message_changed(msg);
 859 }
 860
 861 void SignalBase::stop_conversion()
 862 {
 863         // Stop conversion so we can restart it from the beginning
 864         conversion_interrupt_ = true;
 865         conversion_input_cond_.notify_one();
 866         if (conversion_thread_.joinable())
 867                 conversion_thread_.join();
 868 }
 869
 870 void SignalBase::on_samples_cleared()
 871 {
 872         if (converted_data_ && (converted_data_->get_segment_count() > 0)) {
 873                 converted_data_->clear();
 874                 samples_cleared();
 875         }
 876 }
 877
 878 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 879         uint64_t end_sample)
 880 {
 881         if (conversion_type_ != NoConversion) {
 882                 if (conversion_thread_.joinable()) {
 883                         // Notify the conversion thread since it's running
 884                         conversion_input_cond_.notify_one();
 885                 } else {
 886                         // Start the conversion thread unless the delay timer is running
 887                         if (!delayed_conversion_starter_.isActive())
 888                                 start_conversion();
 889                 }
 890         }
 891
 892         samples_added(segment->segment_id(), start_sample, end_sample);
 893 }
 894
 895 void SignalBase::on_input_segment_completed()
 896 {
 897         if (conversion_type_ != NoConversion)
 898                 if (conversion_thread_.joinable()) {
 899                         // Notify the conversion thread since it's running
 900                         conversion_input_cond_.notify_one();
 901                 }
 902 }
 903
 904 void SignalBase::on_min_max_changed(float min, float max)
 905 {
 906         // Restart conversion if one is enabled and uses a calculated threshold
 907         if ((conversion_type_ != NoConversion) &&
 908                 (get_current_conversion_preset() == DynamicPreset))
 909                 start_conversion(true);
 910
 911         min_max_changed(min, max);
 912 }
 913
 914 void SignalBase::on_capture_state_changed(int state)
 915 {
 916         if (state == Session::Running) {
 917                 // Restart conversion if one is enabled
 918                 if (conversion_type_ != NoConversion)
 919                         start_conversion();
 920         }
 921 }
 922
 923 void SignalBase::on_delayed_conversion_start()
 924 {
 925         start_conversion();
 926 }
 927
 928 } // namespace data
 929 } // namespace pv