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         index_(0),
 128         error_message_("")
 129 {
 130         if (channel_) {
 131                 set_internal_name(QString::fromStdString(channel_->name()));
 132                 set_index(channel_->index());
 133         }
 134
 135         connect(&delayed_conversion_starter_, SIGNAL(timeout()),
 136                 this, SLOT(on_delayed_conversion_start()));
 137         delayed_conversion_starter_.setSingleShot(true);
 138         delayed_conversion_starter_.setInterval(ConversionDelay);
 139
 140         // Only logic and analog SR channels can have their colors auto-set
 141         // because for them, we have an index that can be used
 142         if (channel_type == LogicChannel)
 143                 set_color(LogicSignalColors[index() % countof(LogicSignalColors)]);
 144         else if (channel_type == AnalogChannel)
 145                 set_color(AnalogSignalColors[index() % countof(AnalogSignalColors)]);
 146 }
 147
 148 SignalBase::~SignalBase()
 149 {
 150         stop_conversion();
 151 }
 152
 153 shared_ptr<sigrok::Channel> SignalBase::channel() const
 154 {
 155         return channel_;
 156 }
 157
 158 bool SignalBase::is_generated() const
 159 {
 160         // Only signals associated with a device have a corresponding sigrok channel
 161         return channel_ == nullptr;
 162 }
 163
 164 bool SignalBase::enabled() const
 165 {
 166         return (channel_) ? channel_->enabled() : true;
 167 }
 168
 169 void SignalBase::set_enabled(bool value)
 170 {
 171         if (channel_) {
 172                 channel_->set_enabled(value);
 173                 enabled_changed(value);
 174         }
 175 }
 176
 177 SignalBase::ChannelType SignalBase::type() const
 178 {
 179         return channel_type_;
 180 }
 181
 182 unsigned int SignalBase::index() const
 183 {
 184         return index_;
 185 }
 186
 187 void SignalBase::set_index(unsigned int index)
 188 {
 189         index_ = index;
 190 }
 191
 192 unsigned int SignalBase::logic_bit_index() const
 193 {
 194         if (channel_type_ == LogicChannel)
 195                 return index_;
 196         else
 197                 return 0;
 198 }
 199
 200 void SignalBase::set_group(SignalGroup* group)
 201 {
 202         group_ = group;
 203 }
 204
 205 SignalGroup* SignalBase::group() const
 206 {
 207         return group_;
 208 }
 209
 210 QString SignalBase::name() const
 211 {
 212         return (channel_) ? QString::fromStdString(channel_->name()) : name_;
 213 }
 214
 215 QString SignalBase::internal_name() const
 216 {
 217         return internal_name_;
 218 }
 219
 220 void SignalBase::set_internal_name(QString internal_name)
 221 {
 222         internal_name_ = internal_name;
 223
 224         // Use this name also for the QObject instance
 225         setObjectName(internal_name);
 226 }
 227
 228 QString SignalBase::display_name() const
 229 {
 230         if ((name() != internal_name_) && (!internal_name_.isEmpty()))
 231                 return name() + " (" + internal_name_ + ")";
 232         else
 233                 return name();
 234 }
 235
 236 void SignalBase::set_name(QString name)
 237 {
 238         if (channel_)
 239                 channel_->set_name(name.toUtf8().constData());
 240
 241         name_ = name;
 242
 243         name_changed(name);
 244 }
 245
 246 QColor SignalBase::color() const
 247 {
 248         return color_;
 249 }
 250
 251 void SignalBase::set_color(QColor color)
 252 {
 253         color_ = color;
 254
 255         bgcolor_ = color;
 256         bgcolor_.setAlpha(ColorBGAlpha);
 257
 258         color_changed(color);
 259 }
 260
 261 QColor SignalBase::bgcolor() const
 262 {
 263         return bgcolor_;
 264 }
 265
 266 QString SignalBase::get_error_message() const
 267 {
 268         return error_message_;
 269 }
 270
 271 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 272 {
 273         if (data_) {
 274                 disconnect(data.get(), SIGNAL(samples_cleared()),
 275                         this, SLOT(on_samples_cleared()));
 276                 disconnect(data.get(), SIGNAL(samples_added(shared_ptr<Segment>, uint64_t, uint64_t)),
 277                         this, SLOT(on_samples_added(shared_ptr<Segment>, uint64_t, uint64_t)));
 278
 279                 shared_ptr<Analog> analog = analog_data();
 280                 if (analog)
 281                         disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
 282                                 this, SLOT(on_min_max_changed(float, float)));
 283         }
 284
 285         data_ = data;
 286
 287         if (data_) {
 288                 connect(data.get(), SIGNAL(samples_cleared()),
 289                         this, SLOT(on_samples_cleared()));
 290                 connect(data.get(), SIGNAL(samples_added(SharedPtrToSegment, uint64_t, uint64_t)),
 291                         this, SLOT(on_samples_added(SharedPtrToSegment, uint64_t, uint64_t)));
 292
 293                 shared_ptr<Analog> analog = analog_data();
 294                 if (analog)
 295                         connect(analog.get(), SIGNAL(min_max_changed(float, float)),
 296                                 this, SLOT(on_min_max_changed(float, float)));
 297         }
 298 }
 299
 300 void SignalBase::clear_sample_data()
 301 {
 302         if (analog_data())
 303                 analog_data()->clear();
 304
 305         if (logic_data())
 306                 logic_data()->clear();
 307 }
 308
 309 shared_ptr<data::Analog> SignalBase::analog_data() const
 310 {
 311         if (!data_)
 312                 return nullptr;
 313
 314         return dynamic_pointer_cast<Analog>(data_);
 315 }
 316
 317 shared_ptr<data::Logic> SignalBase::logic_data() const
 318 {
 319         if (!data_)
 320                 return nullptr;
 321
 322         shared_ptr<Logic> result;
 323
 324         if (((conversion_type_ == A2LConversionByThreshold) ||
 325                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 326                 result = dynamic_pointer_cast<Logic>(converted_data_);
 327         else
 328                 result = dynamic_pointer_cast<Logic>(data_);
 329
 330         return result;
 331 }
 332
 333 shared_ptr<pv::data::SignalData> SignalBase::data() const
 334 {
 335         return data_;
 336 }
 337
 338 bool SignalBase::segment_is_complete(uint32_t segment_id) const
 339 {
 340         bool result = true;
 341
 342         shared_ptr<Analog> adata = analog_data();
 343         if (adata)
 344         {
 345                 auto segments = adata->analog_segments();
 346                 try {
 347                         result = segments.at(segment_id)->is_complete();
 348                 } catch (out_of_range&) {
 349                         // Do nothing
 350                 }
 351         } else {
 352                 shared_ptr<Logic> ldata = logic_data();
 353                 if (ldata) {
 354                         shared_ptr<Logic> data = dynamic_pointer_cast<Logic>(data_);
 355                         auto segments = data->logic_segments();
 356                         try {
 357                                 result = segments.at(segment_id)->is_complete();
 358                         } catch (out_of_range&) {
 359                                 // Do nothing
 360                         }
 361                 }
 362         }
 363
 364         return result;
 365 }
 366
 367 bool SignalBase::has_samples() const
 368 {
 369         bool result = false;
 370
 371         shared_ptr<Analog> adata = analog_data();
 372         if (adata)
 373         {
 374                 auto segments = adata->analog_segments();
 375                 if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 376                         result = true;
 377         } else {
 378                 shared_ptr<Logic> ldata = logic_data();
 379                 if (ldata) {
 380                         auto segments = ldata->logic_segments();
 381                         if ((segments.size() > 0) && (segments.front()->get_sample_count() > 0))
 382                                 result = true;
 383                 }
 384         }
 385
 386         return result;
 387 }
 388
 389 double SignalBase::get_samplerate() const
 390 {
 391         shared_ptr<Analog> adata = analog_data();
 392         if (adata)
 393                 return adata->get_samplerate();
 394         else {
 395                 shared_ptr<Logic> ldata = logic_data();
 396                 if (ldata)
 397                         return ldata->get_samplerate();
 398         }
 399
 400         // Default samplerate is 1 Hz
 401         return 1.0;
 402 }
 403
 404 SignalBase::ConversionType SignalBase::get_conversion_type() const
 405 {
 406         return conversion_type_;
 407 }
 408
 409 void SignalBase::set_conversion_type(ConversionType t)
 410 {
 411         if (conversion_type_ != NoConversion) {
 412                 stop_conversion();
 413
 414                 // Discard converted data
 415                 converted_data_.reset();
 416                 samples_cleared();
 417         }
 418
 419         conversion_type_ = t;
 420
 421         // Re-create an empty container
 422         // so that the signal is recognized as providing logic data
 423         // and thus can be assigned to a decoder
 424         if (conversion_is_a2l())
 425                 if (!converted_data_)
 426                         converted_data_ = make_shared<Logic>(1);  // Contains only one channel
 427
 428         start_conversion();
 429
 430         conversion_type_changed(t);
 431 }
 432
 433 map<QString, QVariant> SignalBase::get_conversion_options() const
 434 {
 435         return conversion_options_;
 436 }
 437
 438 bool SignalBase::set_conversion_option(QString key, QVariant value)
 439 {
 440         QVariant old_value;
 441
 442         auto key_iter = conversion_options_.find(key);
 443         if (key_iter != conversion_options_.end())
 444                 old_value = key_iter->second;
 445
 446         conversion_options_[key] = value;
 447
 448         return (value != old_value);
 449 }
 450
 451 vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
 452         const bool always_custom) const
 453 {
 454         vector<double> result;
 455         ConversionType conv_type = t;
 456         ConversionPreset preset;
 457
 458         // Use currently active conversion if no conversion type was supplied
 459         if (conv_type == NoConversion)
 460                 conv_type = conversion_type_;
 461
 462         if (always_custom)
 463                 preset = NoPreset;
 464         else
 465                 preset = get_current_conversion_preset();
 466
 467         if (conv_type == A2LConversionByThreshold) {
 468                 double thr = 0;
 469
 470                 if (preset == NoPreset) {
 471                         auto thr_iter = conversion_options_.find("threshold_value");
 472                         if (thr_iter != conversion_options_.end())
 473                                 thr = (thr_iter->second).toDouble();
 474                 }
 475
 476                 if (preset == DynamicPreset)
 477                         thr = (min_value_ + max_value_) * 0.5;  // middle between min and max
 478
 479                 if ((int)preset == 1) thr = 0.9;
 480                 if ((int)preset == 2) thr = 1.8;
 481                 if ((int)preset == 3) thr = 2.5;
 482                 if ((int)preset == 4) thr = 1.5;
 483
 484                 result.push_back(thr);
 485         }
 486
 487         if (conv_type == A2LConversionBySchmittTrigger) {
 488                 double thr_lo = 0, thr_hi = 0;
 489
 490                 if (preset == NoPreset) {
 491                         auto thr_lo_iter = conversion_options_.find("threshold_value_low");
 492                         if (thr_lo_iter != conversion_options_.end())
 493                                 thr_lo = (thr_lo_iter->second).toDouble();
 494
 495                         auto thr_hi_iter = conversion_options_.find("threshold_value_high");
 496                         if (thr_hi_iter != conversion_options_.end())
 497                                 thr_hi = (thr_hi_iter->second).toDouble();
 498                 }
 499
 500                 if (preset == DynamicPreset) {
 501                         const double amplitude = max_value_ - min_value_;
 502                         const double center = min_value_ + (amplitude / 2);
 503                         thr_lo = center - (amplitude * 0.15);  // 15% margin
 504                         thr_hi = center + (amplitude * 0.15);  // 15% margin
 505                 }
 506
 507                 if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
 508                 if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
 509                 if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
 510                 if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
 511
 512                 result.push_back(thr_lo);
 513                 result.push_back(thr_hi);
 514         }
 515
 516         return result;
 517 }
 518
 519 vector< pair<QString, int> > SignalBase::get_conversion_presets() const
 520 {
 521         vector< pair<QString, int> > presets;
 522
 523         if (conversion_type_ == A2LConversionByThreshold) {
 524                 // Source: http://www.interfacebus.com/voltage_threshold.html
 525                 presets.emplace_back(tr("Signal average"), 0);
 526                 presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
 527                 presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
 528                 presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
 529                 presets.emplace_back(tr("1.5V (for TTL)"), 4);
 530         }
 531
 532         if (conversion_type_ == A2LConversionBySchmittTrigger) {
 533                 // Source: http://www.interfacebus.com/voltage_threshold.html
 534                 presets.emplace_back(tr("Signal average +/- 15%"), 0);
 535                 presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
 536                 presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
 537                 presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
 538                 presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
 539         }
 540
 541         return presets;
 542 }
 543
 544 SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
 545 {
 546         auto preset = conversion_options_.find("preset");
 547         if (preset != conversion_options_.end())
 548                 return (ConversionPreset)((preset->second).toInt());
 549
 550         return DynamicPreset;
 551 }
 552
 553 void SignalBase::set_conversion_preset(ConversionPreset id)
 554 {
 555         conversion_options_["preset"] = (int)id;
 556 }
 557
 558 #ifdef ENABLE_DECODE
 559 bool SignalBase::is_decode_signal() const
 560 {
 561         return (channel_type_ == DecodeChannel);
 562 }
 563 #endif
 564
 565 void SignalBase::save_settings(QSettings &settings) const
 566 {
 567         settings.setValue("name", name());
 568         settings.setValue("enabled", enabled());
 569         settings.setValue("color", color().rgba());
 570         settings.setValue("conversion_type", (int)conversion_type_);
 571
 572         settings.setValue("conv_options", (int)(conversion_options_.size()));
 573         int i = 0;
 574         for (auto& kvp : conversion_options_) {
 575                 settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
 576                 settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
 577                 i++;
 578         }
 579 }
 580
 581 void SignalBase::restore_settings(QSettings &settings)
 582 {
 583         if (settings.contains("name"))
 584                 set_name(settings.value("name").toString());
 585
 586         if (settings.contains("enabled"))
 587                 set_enabled(settings.value("enabled").toBool());
 588
 589         if (settings.contains("color")) {
 590                 QVariant value = settings.value("color");
 591
 592                 // Workaround for Qt QColor serialization bug on OSX
 593                 if ((QMetaType::Type)(value.type()) == QMetaType::QColor)
 594                         set_color(value.value<QColor>());
 595                 else
 596                         set_color(QColor::fromRgba(value.value<uint32_t>()));
 597
 598                 // A color with an alpha value of 0 makes the signal marker invisible
 599                 if (color() == QColor(0, 0, 0, 0))
 600                         set_color(Qt::gray);
 601         }
 602
 603         if (settings.contains("conversion_type"))
 604                 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 605
 606         int conv_options = 0;
 607         if (settings.contains("conv_options"))
 608                 conv_options = settings.value("conv_options").toInt();
 609
 610         if (conv_options)
 611                 for (int i = 0; i < conv_options; i++) {
 612                         const QString key_id = QString("conv_option%1_key").arg(i);
 613                         const QString value_id = QString("conv_option%1_value").arg(i);
 614
 615                         if (settings.contains(key_id) && settings.contains(value_id))
 616                                 conversion_options_[settings.value(key_id).toString()] =
 617                                         settings.value(value_id);
 618                 }
 619 }
 620
 621 bool SignalBase::conversion_is_a2l() const
 622 {
 623         return (((conversion_type_ == A2LConversionByThreshold) ||
 624                 (conversion_type_ == A2LConversionBySchmittTrigger)));
 625 }
 626
 627 void SignalBase::convert_single_segment_range(shared_ptr<AnalogSegment> asegment,
 628         shared_ptr<LogicSegment> lsegment, uint64_t start_sample, uint64_t end_sample)
 629 {
 630         if (end_sample > start_sample) {
 631                 tie(min_value_, max_value_) = asegment->get_min_max();
 632
 633                 // Create sigrok::Analog instance
 634                 float *asamples = new float[ConversionBlockSize];
 635                 assert(asamples);
 636                 uint8_t *lsamples = new uint8_t[ConversionBlockSize];
 637                 assert(lsamples);
 638
 639                 vector<shared_ptr<sigrok::Channel> > channels;
 640                 if (channel_)
 641                         channels.push_back(channel_);
 642
 643                 vector<const sigrok::QuantityFlag*> mq_flags;
 644                 const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
 645                 const sigrok::Unit * const unit = sigrok::Unit::VOLT;
 646
 647                 shared_ptr<sigrok::Packet> packet =
 648                         Session::sr_context->create_analog_packet(channels,
 649                         asamples, ConversionBlockSize, mq, unit, mq_flags);
 650
 651                 shared_ptr<sigrok::Analog> analog =
 652                         dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 653
 654                 // Convert
 655                 uint64_t i = start_sample;
 656
 657                 if (conversion_type_ == A2LConversionByThreshold) {
 658                         const double threshold = get_conversion_thresholds()[0];
 659
 660                         // Convert as many sample blocks as we can
 661                         while ((end_sample - i) > ConversionBlockSize) {
 662                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 663
 664                                 shared_ptr<sigrok::Logic> logic =
 665                                         analog->get_logic_via_threshold(threshold, lsamples);
 666
 667                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 668                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 669                                 i += ConversionBlockSize;
 670                         }
 671
 672                         // Re-create sigrok::Analog and convert remaining samples
 673                         packet = Session::sr_context->create_analog_packet(channels,
 674                                 asamples, end_sample - i, mq, unit, mq_flags);
 675
 676                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 677
 678                         asegment->get_samples(i, end_sample, asamples);
 679                         shared_ptr<sigrok::Logic> logic =
 680                                 analog->get_logic_via_threshold(threshold, lsamples);
 681                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 682                         samples_added(lsegment->segment_id(), i, end_sample);
 683                 }
 684
 685                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 686                         const vector<double> thresholds = get_conversion_thresholds();
 687                         const double lo_thr = thresholds[0];
 688                         const double hi_thr = thresholds[1];
 689
 690                         uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0
 691
 692                         // Convert as many sample blocks as we can
 693                         while ((end_sample - i) > ConversionBlockSize) {
 694                                 asegment->get_samples(i, i + ConversionBlockSize, asamples);
 695
 696                                 shared_ptr<sigrok::Logic> logic =
 697                                         analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 698                                                 &state, lsamples);
 699
 700                                 lsegment->append_payload(logic->data_pointer(), logic->data_length());
 701                                 samples_added(lsegment->segment_id(), i, i + ConversionBlockSize);
 702
 703                                 i += ConversionBlockSize;
 704                         }
 705
 706                         // Re-create sigrok::Analog and convert remaining samples
 707                         packet = Session::sr_context->create_analog_packet(channels,
 708                                 asamples, end_sample - i, mq, unit, mq_flags);
 709
 710                         analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
 711
 712                         asegment->get_samples(i, end_sample, asamples);
 713                         shared_ptr<sigrok::Logic> logic =
 714                                 analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
 715                                         &state, lsamples);
 716                         lsegment->append_payload(logic->data_pointer(), logic->data_length());
 717                         samples_added(lsegment->segment_id(), i, end_sample);
 718                 }
 719
 720                 // If acquisition is ongoing, start-/endsample may have changed
 721                 end_sample = asegment->get_sample_count();
 722
 723                 delete[] lsamples;
 724                 delete[] asamples;
 725         }
 726 }
 727
 728 void SignalBase::convert_single_segment(shared_ptr<AnalogSegment> asegment,
 729         shared_ptr<LogicSegment> lsegment)
 730 {
 731         uint64_t start_sample, end_sample, old_end_sample;
 732         start_sample = end_sample = 0;
 733         bool complete_state, old_complete_state;
 734
 735         start_sample = lsegment->get_sample_count();
 736         end_sample = asegment->get_sample_count();
 737         complete_state = asegment->is_complete();
 738
 739         // Don't do anything if the segment is still being filled and the sample count is too small
 740         if ((!complete_state) && (end_sample - start_sample < ConversionBlockSize))
 741                 return;
 742
 743         do {
 744                 convert_single_segment_range(asegment, lsegment, start_sample, end_sample);
 745
 746                 old_end_sample = end_sample;
 747                 old_complete_state = complete_state;
 748
 749                 start_sample = lsegment->get_sample_count();
 750                 end_sample = asegment->get_sample_count();
 751                 complete_state = asegment->is_complete();
 752
 753                 // If the segment has been incomplete when we were called and has been
 754                 // completed in the meanwhile, we convert the remaining samples as well.
 755                 // Also, if a sufficient number of samples was added in the meanwhile,
 756                 // we do another round of sample conversion.
 757         } while ((complete_state != old_complete_state) ||
 758                 (end_sample - old_end_sample >= ConversionBlockSize));
 759
 760         if (complete_state)
 761                 lsegment->set_complete();
 762 }
 763
 764 void SignalBase::conversion_thread_proc()
 765 {
 766         shared_ptr<Analog> analog_data;
 767
 768         if (conversion_is_a2l()) {
 769                 analog_data = dynamic_pointer_cast<Analog>(data_);
 770
 771                 if (analog_data->analog_segments().size() == 0) {
 772                         unique_lock<mutex> input_lock(conversion_input_mutex_);
 773                         conversion_input_cond_.wait(input_lock);
 774                 }
 775
 776         } else
 777                 // Currently, we only handle A2L conversions
 778                 return;
 779
 780         // If we had to wait for input data, we may have been notified to terminate
 781         if (conversion_interrupt_)
 782                 return;
 783
 784         uint32_t segment_id = 0;
 785
 786         shared_ptr<AnalogSegment> asegment = analog_data->analog_segments().front();
 787         assert(asegment);
 788         connect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 789
 790         const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 791         assert(logic_data);
 792
 793         // Create the initial logic data segment if needed
 794         if (logic_data->logic_segments().size() == 0) {
 795                 shared_ptr<LogicSegment> new_segment =
 796                         make_shared<LogicSegment>(*logic_data.get(), 0, 1, asegment->samplerate());
 797                 logic_data->push_segment(new_segment);
 798         }
 799
 800         shared_ptr<LogicSegment> lsegment = logic_data->logic_segments().front();
 801         assert(lsegment);
 802
 803         do {
 804                 convert_single_segment(asegment, lsegment);
 805
 806                 // Only advance to next segment if the current input segment is complete
 807                 if (asegment->is_complete() &&
 808                         analog_data->analog_segments().size() > logic_data->logic_segments().size()) {
 809
 810                         disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 811
 812                         // There are more segments to process
 813                         segment_id++;
 814
 815                         try {
 816                                 asegment = analog_data->analog_segments().at(segment_id);
 817                                 disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 818                                 connect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 819                         } catch (out_of_range&) {
 820                                 qDebug() << "Conversion error for" << name() << ": no analog segment" \
 821                                         << segment_id << ", segments size is" << analog_data->analog_segments().size();
 822                                 return;
 823                         }
 824
 825                         shared_ptr<LogicSegment> new_segment = make_shared<LogicSegment>(
 826                                 *logic_data.get(), segment_id, 1, asegment->samplerate());
 827                         logic_data->push_segment(new_segment);
 828
 829                         lsegment = logic_data->logic_segments().back();
 830                 } else {
 831                         // No more samples/segments to process, wait for data or interrupt
 832                         if (!conversion_interrupt_) {
 833                                 unique_lock<mutex> input_lock(conversion_input_mutex_);
 834                                 conversion_input_cond_.wait(input_lock);
 835                         }
 836                 }
 837         } while (!conversion_interrupt_);
 838
 839         disconnect(asegment.get(), SIGNAL(completed()), this, SLOT(on_input_segment_completed()));
 840 }
 841
 842 void SignalBase::start_conversion(bool delayed_start)
 843 {
 844         if (delayed_start) {
 845                 delayed_conversion_starter_.start();
 846                 return;
 847         }
 848
 849         stop_conversion();
 850
 851         if (converted_data_ && (converted_data_->get_segment_count() > 0)) {
 852                 converted_data_->clear();
 853                 samples_cleared();
 854         }
 855
 856         conversion_interrupt_ = false;
 857         conversion_thread_ = std::thread(&SignalBase::conversion_thread_proc, this);
 858 }
 859
 860 void SignalBase::set_error_message(QString msg)
 861 {
 862         error_message_ = msg;
 863         // TODO Emulate noquote()
 864         qDebug().nospace() << name() << ": " << msg;
 865
 866         error_message_changed(msg);
 867 }
 868
 869 void SignalBase::stop_conversion()
 870 {
 871         // Stop conversion so we can restart it from the beginning
 872         conversion_interrupt_ = true;
 873         conversion_input_cond_.notify_one();
 874         if (conversion_thread_.joinable())
 875                 conversion_thread_.join();
 876 }
 877
 878 void SignalBase::on_samples_cleared()
 879 {
 880         if (converted_data_ && (converted_data_->get_segment_count() > 0)) {
 881                 converted_data_->clear();
 882                 samples_cleared();
 883         }
 884 }
 885
 886 void SignalBase::on_samples_added(SharedPtrToSegment segment, uint64_t start_sample,
 887         uint64_t end_sample)
 888 {
 889         if (conversion_type_ != NoConversion) {
 890                 if (conversion_thread_.joinable()) {
 891                         // Notify the conversion thread since it's running
 892                         conversion_input_cond_.notify_one();
 893                 } else {
 894                         // Start the conversion thread unless the delay timer is running
 895                         if (!delayed_conversion_starter_.isActive())
 896                                 start_conversion();
 897                 }
 898         }
 899
 900         samples_added(segment->segment_id(), start_sample, end_sample);
 901 }
 902
 903 void SignalBase::on_input_segment_completed()
 904 {
 905         if (conversion_type_ != NoConversion)
 906                 if (conversion_thread_.joinable()) {
 907                         // Notify the conversion thread since it's running
 908                         conversion_input_cond_.notify_one();
 909                 }
 910 }
 911
 912 void SignalBase::on_min_max_changed(float min, float max)
 913 {
 914         // Restart conversion if one is enabled and uses a calculated threshold
 915         if ((conversion_type_ != NoConversion) &&
 916                 (get_current_conversion_preset() == DynamicPreset))
 917                 start_conversion(true);
 918
 919         min_max_changed(min, max);
 920 }
 921
 922 void SignalBase::on_capture_state_changed(int state)
 923 {
 924         if (state == Session::Running) {
 925                 // Restart conversion if one is enabled
 926                 if (conversion_type_ != NoConversion)
 927                         start_conversion();
 928         }
 929 }
 930
 931 void SignalBase::on_delayed_conversion_start()
 932 {
 933         start_conversion();
 934 }
 935
 936 } // namespace data
 937 } // namespace pv