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                 internal_name_ = QString::fromStdString(channel_->name());
 131                 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
 224 QString SignalBase::display_name() const
 225 {
 226         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 227                 return name() + " (" + internal_name_ + ")";
 228         else
 229                 return name();
 230 }
 231
 232 void SignalBase::set_name(QString name)
 233 {
 234         if (channel_)
 235                 channel_->set_name(name.toUtf8().constData());
 236
 237         name_ = name;
 238
 239         name_changed(name);
 240 }
 241
 242 QColor SignalBase::color() const
 243 {
 244         return color_;
 245 }
 246
 247 void SignalBase::set_color(QColor color)
 248 {
 249         color_ = color;
 250
 251         bgcolor_ = color;
 252         bgcolor_.setAlpha(ColorBGAlpha);
 253
 254         color_changed(color);
 255 }
 256
 257 QColor SignalBase::bgcolor() const
 258 {
 259         return bgcolor_;
 260 }
 261
 262 QString SignalBase::get_error_message() const
 263 {
 264         return error_message_;
 265 }
 266
 267 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 268 {
 269         if (data_) {
 270                 disconnect(data.get(), SIGNAL(samples_cleared()),
 271                         this, SLOT(on_samples_cleared()));
 272                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 273                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 274
 275                 shared_ptr<Analog> analog = analog_data();
 276                 if (analog)
 277                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 278                                 this, SLOT(on_min_max_changed(float, float)));
 279         }
 280
 281         data_ = data;
 282
 283         if (data_) {
 284                 connect(data.get(), SIGNAL(samples_cleared()),
 285                         this, SLOT(on_samples_cleared()));
 286                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 287                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 288
 289                 shared_ptr<Analog> analog = analog_data();
 290                 if (analog)
 291                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 292                                 this, SLOT(on_min_max_changed(float, float)));
 293         }
 294 }
 295
 296 void SignalBase::clear_sample_data()
 297 {
 298         if (analog_data())
 299                 analog_data()->clear();
 300
 301         if (logic_data())
 302                 logic_data()->clear();
 303 }
 304
 305 shared_ptr<data::Analog> SignalBase::analog_data() const
 306 {
 307         if (!data_)
 308                 return nullptr;
 309
 310         return dynamic_pointer_cast<Analog>(data_);
 311 }
 312
 313 shared_ptr<data::Logic> SignalBase::logic_data() const
 314 {
 315         if (!data_)
 316                 return nullptr;
 317
 318         shared_ptr<Logic> result = dynamic_pointer_cast<Logic>(data_);
 319
 320         if (((conversion_type_ == A2LConversionByThreshold) ||
 321                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 322                 result = dynamic_pointer_cast<Logic>(converted_data_);
 323
 324         return result;
 325 }
 326
 327 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 328 {
 329         bool result = true;
 330
 331         shared_ptr<Analog> adata = analog_data();
 332         if (adata)
 333         {
 334                 auto segments = adata->analog_segments();
 335                 try {
 336                         result = segments.at(segment_id)->is_complete();
 337                 } catch (out_of_range&) {
 338                         // Do nothing
 339                 }
 340         } else {
 341                 shared_ptr<Logic> ldata = logic_data();
 342                 if (ldata) {
 343                         shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 344                         auto segments = data->logic_segments();
 345                         try {
 346                                 result = segments.at(segment_id)->is_complete();
 347                         } catch (out_of_range&) {
 348                                 // Do nothing
 349                         }
 350                 }
 351         }
 352
 353         return result;
 354 }
 355
 356 bool SignalBase::has_samples() const
 357 {
 358         bool result = false;
 359
 360         shared_ptr<Analog> adata = analog_data();
 361         if (adata)
 362         {
 363                 auto segments = adata->analog_segments();
 364                 if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 365                         result = true;
 366         } else {
 367                 shared_ptr<Logic> ldata = logic_data();
 368                 if (ldata) {
 369                         auto segments = ldata->logic_segments();
 370                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 371                                 result = true;
 372                 }
 373         }
 374
 375         return result;
 376 }
 377
 378 double SignalBase::get_samplerate() const
 379 {
 380         shared_ptr<Analog> adata = analog_data();
 381         if (adata)
 382                 return adata->get_samplerate();
 383         else {
 384                 shared_ptr<Logic> ldata = logic_data();
 385                 if (ldata)
 386                         return ldata->get_samplerate();
 387         }
 388
 389         // Default samplerate is 1 Hz
 390         return 1.0;
 391 }
 392
 393 SignalBase::ConversionType SignalBase::get_conversion_type() const
 394 {
 395         return conversion_type_;
 396 }
 397
 398 void SignalBase::set_conversion_type(ConversionType t)
 399 {
 400         if (conversion_type_ != NoConversion) {
 401                 stop_conversion();
 402
 403                 // Discard converted data
 404                 converted_data_.reset();
 405                 samples_cleared();
 406         }
 407
 408         conversion_type_ = t;
 409
 410         // Re-create an empty container
 411         // so that the signal is recognized as providing logic data
 412         // and thus can be assigned to a decoder
 413         if (conversion_is_a2l())
 414                 if (!converted_data_)
 415                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 416
 417         start_conversion();
 418
 419         conversion_type_changed(t);
 420 }
 421
 422 map<QString, QVariant> SignalBase::get_conversion_options() const
 423 {
 424         return conversion_options_;
 425 }
 426
 427 bool SignalBase::set_conversion_option(QString key, QVariant value)
 428 {
 429         QVariant old_value;
 430
 431         auto key_iter = conversion_options_.find(key);
 432         if (key_iter != conversion_options_.end())
 433                 old_value = key_iter->second;
 434
 435         conversion_options_[key] = value;
 436
 437         return (value != old_value);
 438 }
 439
 440 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 441         const bool always_custom) const
 442 {
 443         vector<double> result;
 444         ConversionType conv_type = t;
 445         ConversionPreset preset;
 446
 447         // Use currently active conversion if no conversion type was supplied
 448         if (conv_type == NoConversion)
 449                 conv_type = conversion_type_;
 450
 451         if (always_custom)
 452                 preset = NoPreset;
 453         else
 454                 preset = get_current_conversion_preset();
 455
 456         if (conv_type == A2LConversionByThreshold) {
 457                 double thr = 0;
 458
 459                 if (preset == NoPreset) {
 460                         auto thr_iter = conversion_options_.find("threshold_value");
 461                         if (thr_iter != conversion_options_.end())
 462                                 thr = (thr_iter->second).toDouble();
 463                 }
 464
 465                 if (preset == DynamicPreset)
 466                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 467
 468                 if ((int)preset == 1) thr = 0.9;
 469                 if ((int)preset == 2) thr = 1.8;
 470                 if ((int)preset == 3) thr = 2.5;
 471                 if ((int)preset == 4) thr = 1.5;
 472
 473                 result.push_back(thr);
 474         }
 475
 476         if (conv_type == A2LConversionBySchmittTrigger) {
 477                 double thr_lo = 0, thr_hi = 0;
 478
 479                 if (preset == NoPreset) {
 480                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 481                         if (thr_lo_iter != conversion_options_.end())
 482                                 thr_lo = (thr_lo_iter->second).toDouble();
 483
 484                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 485                         if (thr_hi_iter != conversion_options_.end())
 486                                 thr_hi = (thr_hi_iter->second).toDouble();
 487                 }
 488
 489                 if (preset == DynamicPreset) {
 490                         const double amplitude = max_value_ - min_value_;
 491                         const double center = min_value_ + (amplitude / 2);
 492                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 493                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 494                 }
 495
 496                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 497                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 498                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 499                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 500
 501                 result.push_back(thr_lo);
 502                 result.push_back(thr_hi);
 503         }
 504
 505         return result;
 506 }
 507
 508 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 509 {
 510         vector< pair<QString, int> > presets;
 511
 512         if (conversion_type_ == A2LConversionByThreshold) {
 513                 // Source: http://www.interfacebus.com/voltage_threshold.html
 514                 presets.emplace_back(tr("Signal average"), 0);
 515                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 516                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 517                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 518                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 519         }
 520
 521         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 522                 // Source: http://www.interfacebus.com/voltage_threshold.html
 523                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 524                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 525                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 526                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 527                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 528         }
 529
 530         return presets;
 531 }
 532
 533 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 534 {
 535         auto preset = conversion_options_.find("preset");
 536         if (preset != conversion_options_.end())
 537                 return (ConversionPreset)((preset->second).toInt());
 538
 539         return DynamicPreset;
 540 }
 541
 542 void SignalBase::set_conversion_preset(ConversionPreset id)
 543 {
 544         conversion_options_["preset"] = (int)id;
 545 }
 546
 547 #ifdef ENABLE_DECODE
 548 bool SignalBase::is_decode_signal() const
 549 {
 550         return (channel_type_ == DecodeChannel);
 551 }
 552 #endif
 553
 554 void SignalBase::save_settings(QSettings &settings) const
 555 {
 556         settings.setValue("name", name());
 557         settings.setValue("enabled", enabled());
 558         settings.setValue("color", color().rgba());
 559         settings.setValue("conversion_type", (int)conversion_type_);
 560
 561         settings.setValue("conv_options", (int)(conversion_options_.size()));
 562         int i = 0;
 563         for (auto& kvp : conversion_options_) {
 564                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 565                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 566                 i++;
 567         }
 568 }
 569
 570 void SignalBase::restore_settings(QSettings &settings)
 571 {
 572         if (settings.contains("name"))
 573                 set_name(settings.value("name").toString());
 574
 575         if (settings.contains("enabled"))
 576                 set_enabled(settings.value("enabled").toBool());
 577
 578         if (settings.contains("color")) {
 579                 QVariant value = settings.value("color");
 580
 581                 // Workaround for Qt QColor serialization bug on OSX
 582                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 583                         set_color(value.value<QColor>());
 584                 else
 585                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 586
 587                 // A color with an alpha value of 0 makes the signal marker invisible
 588                 if (color() == QColor(0, 0, 0, 0))
 589                         set_color(Qt::gray);
 590         }
 591
 592         if (settings.contains("conversion_type"))
 593                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 594
 595         int conv_options = 0;
 596         if (settings.contains("conv_options"))
 597                 conv_options = settings.value("conv_options").toInt();
 598
 599         if (conv_options)
 600                 for (int i = 0; i < conv_options; i++) {
 601                         const QString key_id = QString("conv_option%1_key").arg(i);
 602                         const QString value_id = QString("conv_option%1_value").arg(i);
 603
 604                         if (settings.contains(key_id) && settings.contains(value_id))
 605                                 conversion_options_[settings.value(key_id).toString()] =
 606                                         settings.value(value_id);
 607                 }
 608 }
 609
 610 bool SignalBase::conversion_is_a2l() const
 611 {
 612         return (((conversion_type_ == A2LConversionByThreshold) ||
 613                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 614 }
 615
 616 void SignalBase::convert_single_segment_range(shared_ptr<AnalogSegment> asegment,
 617         shared_ptr<LogicSegment> lsegment, uint64_t start_sample, uint64_t end_sample)
 618 {
 619         if (end_sample > start_sample) {
 620                 tie(min_value_, max_value_) = asegment->get_min_max();
 621
 622                 // Create sigrok::Analog instance
 623                 float *asamples = new float[ConversionBlockSize];
 624                 assert(asamples);
 625                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 626                 assert(lsamples);
 627
 628                 vector<shared_ptr<sigrok::Channel> > channels;
 629                 if (channel_)
 630                         channels.push_back(channel_);
 631
 632                 vector<const sigrok::QuantityFlag*> mq_flags;
 633                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 634                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 635
 636                 shared_ptr<sigrok::Packet> packet =
 637                         Session::sr_context->create_analog_packet(channels,
 638                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 639
 640                 shared_ptr<sigrok::Analog> analog =
 641                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 642
 643                 // Convert
 644                 uint64_t i = start_sample;
 645
 646                 if (conversion_type_ == A2LConversionByThreshold) {
 647                         const double threshold = get_conversion_thresholds()[0];
 648
 649                         // Convert as many sample blocks as we can
 650                         while ((end_sample - i) > ConversionBlockSize) {
 651                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 652
 653                                 shared_ptr<sigrok::Logic> logic =
 654                                         analog->get_logic_via_threshold(threshold, lsamples);
 655
 656                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 657                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 658                                 i += ConversionBlockSize;
 659                         }
 660
 661                         // Re-create sigrok::Analog and convert remaining samples
 662                         packet = Session::sr_context->create_analog_packet(channels,
 663                                 asamples, end_sample - i, mq, unit, mq_flags);
 664
 665                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 666
 667                         asegment->get_samples(i, end_sample, asamples);
 668                         shared_ptr<sigrok::Logic> logic =
 669                                 analog->get_logic_via_threshold(threshold, lsamples);
 670                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 671                         samples_added(lsegment->segment_id(), i, end_sample);
 672                 }
 673
 674                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 675                         const vector<double> thresholds = get_conversion_thresholds();
 676                         const double lo_thr = thresholds[0];
 677                         const double hi_thr = thresholds[1];
 678
 679                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 680
 681                         // Convert as many sample blocks as we can
 682                         while ((end_sample - i) > ConversionBlockSize) {
 683                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 684
 685                                 shared_ptr<sigrok::Logic> logic =
 686                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 687                                                 &state, lsamples);
 688
 689                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 690                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 691
 692                                 i += ConversionBlockSize;
 693                         }
 694
 695                         // Re-create sigrok::Analog and convert remaining samples
 696                         packet = Session::sr_context->create_analog_packet(channels,
 697                                 asamples, end_sample - i, mq, unit, mq_flags);
 698
 699                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 700
 701                         asegment->get_samples(i, end_sample, asamples);
 702                         shared_ptr<sigrok::Logic> logic =
 703                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 704                                         &state, lsamples);
 705                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 706                         samples_added(lsegment->segment_id(), i, end_sample);
 707                 }
 708
 709                 // If acquisition is ongoing, start-/endsample may have changed
 710                 end_sample = asegment->get_sample_count();
 711
 712                 delete[] lsamples;
 713                 delete[] asamples;
 714         }
 715 }
 716
 717 void SignalBase::convert_single_segment(shared_ptr<AnalogSegment> asegment,
 718         shared_ptr<LogicSegment> lsegment)
 719 {
 720         uint64_t start_sample, end_sample, old_end_sample;
 721         start_sample = end_sample = 0;
 722         bool complete_state, old_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         // Don't do anything if the segment is still being filled and the sample count is too small
 729         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 730                 return;
 731
 732         do {
 733                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 734
 735                 old_end_sample = end_sample;
 736                 old_complete_state = complete_state;
 737
 738                 start_sample = lsegment->get_sample_count();
 739                 end_sample = asegment->get_sample_count();
 740                 complete_state = asegment->is_complete();
 741
 742                 // If the segment has been incomplete when we were called and has been
 743                 // completed in the meanwhile, we convert the remaining samples as well.
 744                 // Also, if a sufficient number of samples was added in the meanwhile,
 745                 // we do another round of sample conversion.
 746         } while ((complete_state != old_complete_state) ||
 747                 (end_sample - old_end_sample >= ConversionBlockSize));
 748 }
 749
 750 void SignalBase::conversion_thread_proc()
 751 {
 752         shared_ptr<Analog> analog_data;
 753
 754         if (conversion_is_a2l()) {
 755                 analog_data = dynamic_pointer_cast<Analog>(data_);
 756
 757                 if (analog_data->analog_segments().size() == 0) {
 758                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 759                         conversion_input_cond_.wait(input_lock);
 760                 }
 761
 762         } else
 763                 // Currently, we only handle A2L conversions
 764                 return;
 765
 766         // If we had to wait for input data, we may have been notified to terminate
 767         if (conversion_interrupt_)
 768                 return;
 769
 770         uint32_t segment_id = 0;
 771
 772         shared_ptr<AnalogSegment> asegment = analog_data->analog_segments().front();
 773         assert(asegment);
 774
 775         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 776         assert(logic_data);
 777
 778         // Create the initial logic data segment if needed
 779         if (logic_data->logic_segments().size() == 0) {
 780                 shared_ptr<LogicSegment> new_segment =
 781                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 782                 logic_data->push_segment(new_segment);
 783         }
 784
 785         shared_ptr<LogicSegment> lsegment = logic_data->logic_segments().front();
 786         assert(lsegment);
 787
 788         do {
 789                 convert_single_segment(asegment, lsegment);
 790
 791                 // Only advance to next segment if the current input segment is complete
 792                 if (asegment->is_complete() &&
 793                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 794
 795                         // There are more segments to process
 796                         segment_id++;
 797
 798                         try {
 799                                 asegment = analog_data->analog_segments().at(segment_id);
 800                         } catch (out_of_range&) {
 801                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 802                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 803                                 return;
 804                         }
 805
 806                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 807                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 808                         logic_data->push_segment(new_segment);
 809
 810                         lsegment = logic_data->logic_segments().back();
 811                 }
 812
 813                 // No more samples/segments to process, wait for data or interrupt
 814                 if (!conversion_interrupt_) {
 815                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 816                         conversion_input_cond_.wait(input_lock);
 817                 }
 818         } while (!conversion_interrupt_);
 819 }
 820
 821 void SignalBase::start_conversion(bool delayed_start)
 822 {
 823         if (delayed_start) {
 824                 delayed_conversion_starter_.start();
 825                 return;
 826         }
 827
 828         stop_conversion();
 829
 830         if (converted_data_)
 831                 converted_data_->clear();
 832
 833         samples_cleared();
 834
 835         conversion_interrupt_ = false;
 836         conversion_thread_ = std::thread(&SignalBase::conversion_thread_proc, this);
 837 }
 838
 839 void SignalBase::set_error_message(QString msg)
 840 {
 841         error_message_ = msg;
 842         // TODO Emulate noquote()
 843         qDebug().nospace() << name() << ": " << msg;
 844
 845         error_message_changed(msg);
 846 }
 847
 848 void SignalBase::stop_conversion()
 849 {
 850         // Stop conversion so we can restart it from the beginning
 851         conversion_interrupt_ = true;
 852         conversion_input_cond_.notify_one();
 853         if (conversion_thread_.joinable())
 854                 conversion_thread_.join();
 855 }
 856
 857 void SignalBase::on_samples_cleared()
 858 {
 859         if (converted_data_)
 860                 converted_data_->clear();
 861
 862         samples_cleared();
 863 }
 864
 865 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 866         uint64_t end_sample)
 867 {
 868         if (conversion_type_ != NoConversion) {
 869                 if (conversion_thread_.joinable()) {
 870                         // Notify the conversion thread since it's running
 871                         conversion_input_cond_.notify_one();
 872                 } else {
 873                         // Start the conversion thread unless the delay timer is running
 874                         if (!delayed_conversion_starter_.isActive())
 875                                 start_conversion();
 876                 }
 877         }
 878
 879         samples_added(segment->segment_id(), start_sample, end_sample);
 880 }
 881
 882 void SignalBase::on_min_max_changed(float min, float max)
 883 {
 884         // Restart conversion if one is enabled and uses a calculated threshold
 885         if ((conversion_type_ != NoConversion) &&
 886                 (get_current_conversion_preset() == DynamicPreset))
 887                 start_conversion(true);
 888
 889         min_max_changed(min, max);
 890 }
 891
 892 void SignalBase::on_capture_state_changed(int state)
 893 {
 894         if (state == Session::Running) {
 895                 // Restart conversion if one is enabled
 896                 if (conversion_type_ != NoConversion)
 897                         start_conversion();
 898         }
 899 }
 900
 901 void SignalBase::on_delayed_conversion_start()
 902 {
 903         start_conversion();
 904 }
 905
 906 } // namespace data
 907 } // namespace pv