pv/data/decodesignal.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <cstring>
  21 #include <forward_list>
  22 #include <limits>
  23
  24 #include <QDebug>
  25
  26 #include "logic.hpp"
  27 #include "logicsegment.hpp"
  28 #include "decodesignal.hpp"
  29 #include "signaldata.hpp"
  30
  31 #include <pv/data/decode/decoder.hpp>
  32 #include <pv/data/decode/row.hpp>
  33 #include <pv/globalsettings.hpp>
  34 #include <pv/session.hpp>
  35
  36 using std::forward_list;
  37 using std::lock_guard;
  38 using std::make_pair;
  39 using std::make_shared;
  40 using std::min;
  41 using std::out_of_range;
  42 using std::shared_ptr;
  43 using std::unique_lock;
  44 using pv::data::decode::Annotation;
  45 using pv::data::decode::DecodeChannel;
  46 using pv::data::decode::Decoder;
  47 using pv::data::decode::Row;
  48
  49 namespace pv {
  50 namespace data {
  51
  52 const double DecodeSignal::DecodeMargin = 1.0;
  53 const double DecodeSignal::DecodeThreshold = 0.2;
  54 const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024;
  55
  56
  57 DecodeSignal::DecodeSignal(pv::Session &session) :
  58         SignalBase(nullptr, SignalBase::DecodeChannel),
  59         session_(session),
  60         srd_session_(nullptr),
  61         logic_mux_data_invalid_(false),
  62         stack_config_changed_(true),
  63         current_segment_id_(0)
  64 {
  65         connect(&session_, SIGNAL(capture_state_changed(int)),
  66                 this, SLOT(on_capture_state_changed(int)));
  67 }
  68
  69 DecodeSignal::~DecodeSignal()
  70 {
  71         reset_decode(true);
  72 }
  73
  74 const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const
  75 {
  76         return stack_;
  77 }
  78
  79 void DecodeSignal::stack_decoder(const srd_decoder *decoder)
  80 {
  81         assert(decoder);
  82
  83         // Set name if this decoder is the first in the list or the name is unchanged
  84         const srd_decoder* prev_dec =
  85                 stack_.empty() ? nullptr : stack_.back()->decoder();
  86         const QString prev_dec_name =
  87                 prev_dec ? QString::fromUtf8(prev_dec->name) : QString();
  88
  89         if ((stack_.empty()) || ((stack_.size() > 0) && (name() == prev_dec_name)))
  90                 set_name(QString::fromUtf8(decoder->name));
  91
  92         const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder);
  93         stack_.push_back(dec);
  94
  95         // Include the newly created decode channels in the channel lists
  96         update_channel_list();
  97
  98         stack_config_changed_ = true;
  99         auto_assign_signals(dec);
 100         commit_decoder_channels();
 101
 102         decoder_stacked((void*)dec.get());
 103
 104         begin_decode();
 105 }
 106
 107 void DecodeSignal::remove_decoder(int index)
 108 {
 109         assert(index >= 0);
 110         assert(index < (int)stack_.size());
 111
 112         // Find the decoder in the stack
 113         auto iter = stack_.begin();
 114         for (int i = 0; i < index; i++, iter++)
 115                 assert(iter != stack_.end());
 116
 117         decoder_removed(iter->get());
 118
 119         // Delete the element
 120         stack_.erase(iter);
 121
 122         // Update channels and decoded data
 123         stack_config_changed_ = true;
 124         update_channel_list();
 125         begin_decode();
 126 }
 127
 128 bool DecodeSignal::toggle_decoder_visibility(int index)
 129 {
 130         auto iter = stack_.cbegin();
 131         for (int i = 0; i < index; i++, iter++)
 132                 assert(iter != stack_.end());
 133
 134         shared_ptr<Decoder> dec = *iter;
 135
 136         // Toggle decoder visibility
 137         bool state = false;
 138         if (dec) {
 139                 state = !dec->shown();
 140                 dec->show(state);
 141         }
 142
 143         return state;
 144 }
 145
 146 void DecodeSignal::reset_decode(bool shutting_down)
 147 {
 148         if (stack_config_changed_ || shutting_down)
 149                 stop_srd_session();
 150         else
 151                 terminate_srd_session();
 152
 153         if (decode_thread_.joinable()) {
 154                 decode_interrupt_ = true;
 155                 decode_input_cond_.notify_one();
 156                 decode_thread_.join();
 157         }
 158
 159         if (logic_mux_thread_.joinable()) {
 160                 logic_mux_interrupt_ = true;
 161                 logic_mux_cond_.notify_one();
 162                 logic_mux_thread_.join();
 163         }
 164
 165         resume_decode();  // Make sure the decode thread isn't blocked by pausing
 166
 167         class_rows_.clear();
 168         current_segment_id_ = 0;
 169         segments_.clear();
 170
 171         logic_mux_data_.reset();
 172         logic_mux_data_invalid_ = true;
 173
 174         if (!error_message_.isEmpty()) {
 175                 error_message_ = QString();
 176                 // TODO Emulate noquote()
 177                 qDebug().nospace() << name() << ": Error cleared";
 178         }
 179
 180         decode_reset();
 181 }
 182
 183 void DecodeSignal::begin_decode()
 184 {
 185         if (decode_thread_.joinable()) {
 186                 decode_interrupt_ = true;
 187                 decode_input_cond_.notify_one();
 188                 decode_thread_.join();
 189         }
 190
 191         if (logic_mux_thread_.joinable()) {
 192                 logic_mux_interrupt_ = true;
 193                 logic_mux_cond_.notify_one();
 194                 logic_mux_thread_.join();
 195         }
 196
 197         reset_decode();
 198
 199         if (stack_.size() == 0) {
 200                 set_error_message(tr("No decoders"));
 201                 return;
 202         }
 203
 204         assert(channels_.size() > 0);
 205
 206         if (get_assigned_signal_count() == 0) {
 207                 set_error_message(tr("There are no channels assigned to this decoder"));
 208                 return;
 209         }
 210
 211         // Make sure that all assigned channels still provide logic data
 212         // (can happen when a converted signal was assigned but the
 213         // conversion removed in the meanwhile)
 214         for (decode::DecodeChannel& ch : channels_)
 215                 if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr))
 216                         ch.assigned_signal = nullptr;
 217
 218         // Check that all decoders have the required channels
 219         for (const shared_ptr<decode::Decoder>& dec : stack_)
 220                 if (!dec->have_required_channels()) {
 221                         set_error_message(tr("One or more required channels "
 222                                 "have not been specified"));
 223                         return;
 224                 }
 225
 226         // Map out all the annotation classes
 227         int row_index = 0;
 228         for (const shared_ptr<decode::Decoder>& dec : stack_) {
 229                 assert(dec);
 230                 const srd_decoder *const decc = dec->decoder();
 231                 assert(dec->decoder());
 232
 233                 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
 234                         const srd_decoder_annotation_row *const ann_row =
 235                                 (srd_decoder_annotation_row *)l->data;
 236                         assert(ann_row);
 237
 238                         const Row row(row_index++, decc, ann_row);
 239
 240                         for (const GSList *ll = ann_row->ann_classes;
 241                                 ll; ll = ll->next)
 242                                 class_rows_[make_pair(decc,
 243                                         GPOINTER_TO_INT(ll->data))] = row;
 244                 }
 245         }
 246
 247         // Free the logic data and its segment(s) if it needs to be updated
 248         if (logic_mux_data_invalid_)
 249                 logic_mux_data_.reset();
 250
 251         if (!logic_mux_data_) {
 252                 const uint32_t ch_count = get_assigned_signal_count();
 253                 logic_mux_unit_size_ = (ch_count + 7) / 8;
 254                 logic_mux_data_ = make_shared<Logic>(ch_count);
 255         }
 256
 257         // Receive notifications when new sample data is available
 258         connect_input_notifiers();
 259
 260         if (get_input_segment_count() == 0) {
 261                 set_error_message(tr("No input data"));
 262                 return;
 263         }
 264
 265         // Make sure the logic output data is complete and up-to-date
 266         logic_mux_interrupt_ = false;
 267         logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
 268
 269         // Decode the muxed logic data
 270         decode_interrupt_ = false;
 271         decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
 272 }
 273
 274 void DecodeSignal::pause_decode()
 275 {
 276         decode_paused_ = true;
 277 }
 278
 279 void DecodeSignal::resume_decode()
 280 {
 281         // Manual unlocking is done before notifying, to avoid waking up the
 282         // waiting thread only to block again (see notify_one for details)
 283         decode_pause_mutex_.unlock();
 284         decode_pause_cond_.notify_one();
 285         decode_paused_ = false;
 286 }
 287
 288 bool DecodeSignal::is_paused() const
 289 {
 290         return decode_paused_;
 291 }
 292
 293 QString DecodeSignal::error_message() const
 294 {
 295         lock_guard<mutex> lock(output_mutex_);
 296         return error_message_;
 297 }
 298
 299 const vector<decode::DecodeChannel> DecodeSignal::get_channels() const
 300 {
 301         return channels_;
 302 }
 303
 304 void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
 305 {
 306         bool new_assignment = false;
 307
 308         // Try to auto-select channels that don't have signals assigned yet
 309         for (decode::DecodeChannel& ch : channels_) {
 310                 // If a decoder is given, auto-assign only its channels
 311                 if (dec && (ch.decoder_ != dec))
 312                         continue;
 313
 314                 if (ch.assigned_signal)
 315                         continue;
 316
 317                 QString ch_name = ch.name.toLower();
 318                 ch_name = ch_name.replace(QRegExp("[-_.]"), " ");
 319
 320                 shared_ptr<data::SignalBase> match;
 321                 for (const shared_ptr<data::SignalBase>& s : session_.signalbases()) {
 322                         if (!s->enabled())
 323                                 continue;
 324
 325                         QString s_name = s->name().toLower();
 326                         s_name = s_name.replace(QRegExp("[-_.]"), " ");
 327
 328                         if (s->logic_data() &&
 329                                 ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
 330                                 if (!match)
 331                                         match = s;
 332                                 else {
 333                                         // Only replace an existing match if it matches more characters
 334                                         int old_unmatched = ch_name.length() - match->name().length();
 335                                         int new_unmatched = ch_name.length() - s->name().length();
 336                                         if (abs(new_unmatched) < abs(old_unmatched))
 337                                                 match = s;
 338                                 }
 339                         }
 340                 }
 341
 342                 if (match) {
 343                         ch.assigned_signal = match.get();
 344                         new_assignment = true;
 345                 }
 346         }
 347
 348         if (new_assignment) {
 349                 logic_mux_data_invalid_ = true;
 350                 stack_config_changed_ = true;
 351                 commit_decoder_channels();
 352                 channels_updated();
 353         }
 354 }
 355
 356 void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
 357 {
 358         for (decode::DecodeChannel& ch : channels_)
 359                 if (ch.id == channel_id) {
 360                         ch.assigned_signal = signal;
 361                         logic_mux_data_invalid_ = true;
 362                 }
 363
 364         stack_config_changed_ = true;
 365         commit_decoder_channels();
 366         channels_updated();
 367         begin_decode();
 368 }
 369
 370 int DecodeSignal::get_assigned_signal_count() const
 371 {
 372         // Count all channels that have a signal assigned to them
 373         return count_if(channels_.begin(), channels_.end(),
 374                 [](decode::DecodeChannel ch) { return ch.assigned_signal; });
 375 }
 376
 377 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
 378 {
 379         for (decode::DecodeChannel& ch : channels_)
 380                 if (ch.id == channel_id)
 381                         ch.initial_pin_state = init_state;
 382
 383         stack_config_changed_ = true;
 384         channels_updated();
 385         begin_decode();
 386 }
 387
 388 double DecodeSignal::samplerate() const
 389 {
 390         double result = 0;
 391
 392         // TODO For now, we simply return the first samplerate that we have
 393         if (segments_.size() > 0)
 394                 result = segments_.front().samplerate;
 395
 396         return result;
 397 }
 398
 399 const pv::util::Timestamp DecodeSignal::start_time() const
 400 {
 401         pv::util::Timestamp result;
 402
 403         // TODO For now, we simply return the first start time that we have
 404         if (segments_.size() > 0)
 405                 result = segments_.front().start_time;
 406
 407         return result;
 408 }
 409
 410 int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const
 411 {
 412         // The working sample count is the highest sample number for
 413         // which all used signals have data available, so go through all
 414         // channels and use the lowest overall sample count of the segment
 415
 416         int64_t count = std::numeric_limits<int64_t>::max();
 417         bool no_signals_assigned = true;
 418
 419         for (const decode::DecodeChannel& ch : channels_)
 420                 if (ch.assigned_signal) {
 421                         no_signals_assigned = false;
 422
 423                         const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
 424                         if (!logic_data || logic_data->logic_segments().empty())
 425                                 return 0;
 426
 427                         try {
 428                                 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
 429                                 count = min(count, (int64_t)segment->get_sample_count());
 430                         } catch (out_of_range&) {
 431                                 return 0;
 432                         }
 433                 }
 434
 435         return (no_signals_assigned ? 0 : count);
 436 }
 437
 438 int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id,
 439         bool include_processing) const
 440 {
 441         lock_guard<mutex> decode_lock(output_mutex_);
 442
 443         int64_t result = 0;
 444
 445         if (segment_id >= segments_.size())
 446                 return result;
 447
 448         if (include_processing)
 449                 result = segments_[segment_id].samples_decoded_incl;
 450         else
 451                 result = segments_[segment_id].samples_decoded_excl;
 452
 453         return result;
 454 }
 455
 456 vector<Row> DecodeSignal::get_rows(bool visible_only) const
 457 {
 458         lock_guard<mutex> lock(output_mutex_);
 459
 460         vector<Row> rows;
 461
 462         for (const shared_ptr<decode::Decoder>& dec : stack_) {
 463                 assert(dec);
 464                 if (visible_only && !dec->shown())
 465                         continue;
 466
 467                 const srd_decoder *const decc = dec->decoder();
 468                 assert(dec->decoder());
 469
 470                 int row_index = 0;
 471                 // Add a row for the decoder if it doesn't have a row list
 472                 if (!decc->annotation_rows)
 473                         rows.emplace_back(row_index++, decc);
 474
 475                 // Add the decoder rows
 476                 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
 477                         const srd_decoder_annotation_row *const ann_row =
 478                                 (srd_decoder_annotation_row *)l->data;
 479                         assert(ann_row);
 480                         rows.emplace_back(row_index++, decc, ann_row);
 481                 }
 482         }
 483
 484         return rows;
 485 }
 486
 487 void DecodeSignal::get_annotation_subset(
 488         vector<pv::data::decode::Annotation> &dest,
 489         const decode::Row &row, uint32_t segment_id, uint64_t start_sample,
 490         uint64_t end_sample) const
 491 {
 492         lock_guard<mutex> lock(output_mutex_);
 493
 494         if (segment_id >= segments_.size())
 495                 return;
 496
 497         const DecodeSegment *segment = &(segments_.at(segment_id));
 498         const map<const decode::Row, decode::RowData> *rows =
 499                 &(segment->annotation_rows);
 500
 501         const auto iter = rows->find(row);
 502         if (iter != rows->end())
 503                 (*iter).second.get_annotation_subset(dest, start_sample, end_sample);
 504 }
 505
 506 void DecodeSignal::get_annotation_subset(
 507         vector<pv::data::decode::Annotation> &dest,
 508         uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const
 509 {
 510         // Note: We put all vectors and lists on the heap, not the stack
 511
 512         const vector<Row> rows = get_rows(true);
 513
 514         // Use forward_lists for faster merging
 515         forward_list<Annotation> *all_ann_list = new forward_list<Annotation>();
 516
 517         for (const Row& row : rows) {
 518                 vector<Annotation> *ann_vector = new vector<Annotation>();
 519                 get_annotation_subset(*ann_vector, row, segment_id, start_sample, end_sample);
 520
 521                 forward_list<Annotation> *ann_list =
 522                         new forward_list<Annotation>(ann_vector->begin(), ann_vector->end());
 523                 delete ann_vector;
 524
 525                 all_ann_list->merge(*ann_list);
 526                 delete ann_list;
 527         }
 528
 529         move(all_ann_list->begin(), all_ann_list->end(), back_inserter(dest));
 530         delete all_ann_list;
 531 }
 532
 533 uint32_t DecodeSignal::get_binary_data_chunk_count(uint32_t segment_id,
 534         const Decoder* dec, uint32_t bin_class_id) const
 535 {
 536         if (segments_.size() == 0)
 537                 return 0;
 538
 539         try {
 540                 const DecodeSegment *segment = &(segments_.at(segment_id));
 541
 542                 for (const DecodeBinaryClass& bc : segment->binary_classes)
 543                         if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
 544                                 return bc.chunks.size();
 545         } catch (out_of_range&) {
 546                 // Do nothing
 547         }
 548
 549         return 0;
 550 }
 551
 552 void DecodeSignal::get_binary_data_chunk(uint32_t segment_id,
 553         const  Decoder* dec, uint32_t bin_class_id, uint32_t chunk_id,
 554         const vector<uint8_t> **dest, uint64_t *size)
 555 {
 556         try {
 557                 const DecodeSegment *segment = &(segments_.at(segment_id));
 558
 559                 for (const DecodeBinaryClass& bc : segment->binary_classes)
 560                         if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) {
 561                                 if (dest) *dest = &(bc.chunks.at(chunk_id).data);
 562                                 if (size) *size = bc.chunks.at(chunk_id).data.size();
 563                                 return;
 564                         }
 565         } catch (out_of_range&) {
 566                 // Do nothing
 567         }
 568 }
 569
 570 void DecodeSignal::get_binary_data_chunks_merged(uint32_t segment_id,
 571         const Decoder* dec, uint32_t bin_class_id, uint64_t start_sample,
 572         uint64_t end_sample, vector<uint8_t> *dest) const
 573 {
 574         assert(dest != nullptr);
 575
 576         try {
 577                 const DecodeSegment *segment = &(segments_.at(segment_id));
 578
 579                 const DecodeBinaryClass* bin_class = nullptr;
 580                 for (const DecodeBinaryClass& bc : segment->binary_classes)
 581                         if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
 582                                 bin_class = &bc;
 583
 584                 // Determine overall size before copying to resize dest vector only once
 585                 uint64_t size = 0;
 586                 uint64_t matches = 0;
 587                 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks)
 588                         if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) {
 589                                 size += chunk.data.size();
 590                                 matches++;
 591                         }
 592                 dest->resize(size);
 593
 594                 uint64_t offset = 0;
 595                 uint64_t matches2 = 0;
 596                 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks)
 597                         if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) {
 598                                 memcpy(dest->data() + offset, chunk.data.data(), chunk.data.size());
 599                                 offset += chunk.data.size();
 600                                 matches2++;
 601
 602                                 // Make sure we don't overwrite memory if the array grew in the meanwhile
 603                                 if (matches2 == matches)
 604                                         break;
 605                         }
 606         } catch (out_of_range&) {
 607                 // Do nothing
 608         }
 609 }
 610
 611 const DecodeBinaryClass* DecodeSignal::get_binary_data_class(uint32_t segment_id,
 612         const data::decode::Decoder* dec, uint32_t bin_class_id) const
 613 {
 614         try {
 615                 const DecodeSegment *segment = &(segments_.at(segment_id));
 616
 617                 for (const DecodeBinaryClass& bc : segment->binary_classes)
 618                         if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
 619                                 return &bc;
 620         } catch (out_of_range&) {
 621                 // Do nothing
 622         }
 623
 624         return nullptr;
 625 }
 626
 627 void DecodeSignal::save_settings(QSettings &settings) const
 628 {
 629         SignalBase::save_settings(settings);
 630
 631         settings.setValue("decoders", (int)(stack_.size()));
 632
 633         // Save decoder stack
 634         int decoder_idx = 0;
 635         for (const shared_ptr<decode::Decoder>& decoder : stack_) {
 636                 settings.beginGroup("decoder" + QString::number(decoder_idx++));
 637
 638                 settings.setValue("id", decoder->decoder()->id);
 639                 settings.setValue("shown", decoder->shown());
 640
 641                 // Save decoder options
 642                 const map<string, GVariant*>& options = decoder->options();
 643
 644                 settings.setValue("options", (int)options.size());
 645
 646                 // Note: decode::Decoder::options() returns only the options
 647                 // that differ from the default. See binding::Decoder::getter()
 648                 int i = 0;
 649                 for (auto& option : options) {
 650                         settings.beginGroup("option" + QString::number(i));
 651                         settings.setValue("name", QString::fromStdString(option.first));
 652                         GlobalSettings::store_gvariant(settings, option.second);
 653                         settings.endGroup();
 654                         i++;
 655                 }
 656
 657                 settings.endGroup();
 658         }
 659
 660         // Save channel mapping
 661         settings.setValue("channels", (int)channels_.size());
 662
 663         for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
 664                 auto channel = find_if(channels_.begin(), channels_.end(),
 665                         [&](decode::DecodeChannel ch) { return ch.id == channel_id; });
 666
 667                 if (channel == channels_.end()) {
 668                         qDebug() << "ERROR: Gap in channel index:" << channel_id;
 669                         continue;
 670                 }
 671
 672                 settings.beginGroup("channel" + QString::number(channel_id));
 673
 674                 settings.setValue("name", channel->name);  // Useful for debugging
 675                 settings.setValue("initial_pin_state", channel->initial_pin_state);
 676
 677                 if (channel->assigned_signal)
 678                         settings.setValue("assigned_signal_name", channel->assigned_signal->name());
 679
 680                 settings.endGroup();
 681         }
 682 }
 683
 684 void DecodeSignal::restore_settings(QSettings &settings)
 685 {
 686         SignalBase::restore_settings(settings);
 687
 688         // Restore decoder stack
 689         GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
 690
 691         int decoders = settings.value("decoders").toInt();
 692
 693         for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
 694                 settings.beginGroup("decoder" + QString::number(decoder_idx));
 695
 696                 QString id = settings.value("id").toString();
 697
 698                 for (GSList *entry = dec_list; entry; entry = entry->next) {
 699                         const srd_decoder *dec = (srd_decoder*)entry->data;
 700                         if (!dec)
 701                                 continue;
 702
 703                         if (QString::fromUtf8(dec->id) == id) {
 704                                 shared_ptr<decode::Decoder> decoder =
 705                                         make_shared<decode::Decoder>(dec);
 706
 707                                 stack_.push_back(decoder);
 708                                 decoder->show(settings.value("shown", true).toBool());
 709
 710                                 // Restore decoder options that differ from their default
 711                                 int options = settings.value("options").toInt();
 712
 713                                 for (int i = 0; i < options; i++) {
 714                                         settings.beginGroup("option" + QString::number(i));
 715                                         QString name = settings.value("name").toString();
 716                                         GVariant *value = GlobalSettings::restore_gvariant(settings);
 717                                         decoder->set_option(name.toUtf8(), value);
 718                                         settings.endGroup();
 719                                 }
 720
 721                                 // Include the newly created decode channels in the channel lists
 722                                 update_channel_list();
 723                                 break;
 724                         }
 725                 }
 726
 727                 settings.endGroup();
 728                 channels_updated();
 729         }
 730
 731         // Restore channel mapping
 732         unsigned int channels = settings.value("channels").toInt();
 733
 734         const unordered_set< shared_ptr<data::SignalBase> > signalbases =
 735                 session_.signalbases();
 736
 737         for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
 738                 auto channel = find_if(channels_.begin(), channels_.end(),
 739                         [&](decode::DecodeChannel ch) { return ch.id == channel_id; });
 740
 741                 if (channel == channels_.end()) {
 742                         qDebug() << "ERROR: Non-existant channel index:" << channel_id;
 743                         continue;
 744                 }
 745
 746                 settings.beginGroup("channel" + QString::number(channel_id));
 747
 748                 QString assigned_signal_name = settings.value("assigned_signal_name").toString();
 749
 750                 for (const shared_ptr<data::SignalBase>& signal : signalbases)
 751                         if (signal->name() == assigned_signal_name)
 752                                 channel->assigned_signal = signal.get();
 753
 754                 channel->initial_pin_state = settings.value("initial_pin_state").toInt();
 755
 756                 settings.endGroup();
 757         }
 758
 759         // Update the internal structures
 760         stack_config_changed_ = true;
 761         update_channel_list();
 762         commit_decoder_channels();
 763
 764         begin_decode();
 765 }
 766
 767 void DecodeSignal::set_error_message(QString msg)
 768 {
 769         error_message_ = msg;
 770         // TODO Emulate noquote()
 771         qDebug().nospace() << name() << ": " << msg;
 772 }
 773
 774 uint32_t DecodeSignal::get_input_segment_count() const
 775 {
 776         uint64_t count = std::numeric_limits<uint64_t>::max();
 777         bool no_signals_assigned = true;
 778
 779         for (const decode::DecodeChannel& ch : channels_)
 780                 if (ch.assigned_signal) {
 781                         no_signals_assigned = false;
 782
 783                         const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
 784                         if (!logic_data || logic_data->logic_segments().empty())
 785                                 return 0;
 786
 787                         // Find the min value of all segment counts
 788                         if ((uint64_t)(logic_data->logic_segments().size()) < count)
 789                                 count = logic_data->logic_segments().size();
 790                 }
 791
 792         return (no_signals_assigned ? 0 : count);
 793 }
 794
 795 uint32_t DecodeSignal::get_input_samplerate(uint32_t segment_id) const
 796 {
 797         double samplerate = 0;
 798
 799         for (const decode::DecodeChannel& ch : channels_)
 800                 if (ch.assigned_signal) {
 801                         const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
 802                         if (!logic_data || logic_data->logic_segments().empty())
 803                                 continue;
 804
 805                         try {
 806                                 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
 807                                 samplerate = segment->samplerate();
 808                         } catch (out_of_range&) {
 809                                 // Do nothing
 810                         }
 811                         break;
 812                 }
 813
 814         return samplerate;
 815 }
 816
 817 void DecodeSignal::update_channel_list()
 818 {
 819         vector<decode::DecodeChannel> prev_channels = channels_;
 820         channels_.clear();
 821
 822         uint16_t id = 0;
 823
 824         // Copy existing entries, create new as needed
 825         for (shared_ptr<Decoder>& decoder : stack_) {
 826                 const srd_decoder* srd_d = decoder->decoder();
 827                 const GSList *l;
 828
 829                 // Mandatory channels
 830                 for (l = srd_d->channels; l; l = l->next) {
 831                         const struct srd_channel *const pdch = (struct srd_channel *)l->data;
 832                         bool ch_added = false;
 833
 834                         // Copy but update ID if this channel was in the list before
 835                         for (decode::DecodeChannel& ch : prev_channels)
 836                                 if (ch.pdch_ == pdch) {
 837                                         ch.id = id++;
 838                                         channels_.push_back(ch);
 839                                         ch_added = true;
 840                                         break;
 841                                 }
 842
 843                         if (!ch_added) {
 844                                 // Create new entry without a mapped signal
 845                                 decode::DecodeChannel ch = {id++, 0, false, nullptr,
 846                                         QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
 847                                         SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
 848                                 channels_.push_back(ch);
 849                         }
 850                 }
 851
 852                 // Optional channels
 853                 for (l = srd_d->opt_channels; l; l = l->next) {
 854                         const struct srd_channel *const pdch = (struct srd_channel *)l->data;
 855                         bool ch_added = false;
 856
 857                         // Copy but update ID if this channel was in the list before
 858                         for (decode::DecodeChannel& ch : prev_channels)
 859                                 if (ch.pdch_ == pdch) {
 860                                         ch.id = id++;
 861                                         channels_.push_back(ch);
 862                                         ch_added = true;
 863                                         break;
 864                                 }
 865
 866                         if (!ch_added) {
 867                                 // Create new entry without a mapped signal
 868                                 decode::DecodeChannel ch = {id++, 0, true, nullptr,
 869                                         QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
 870                                         SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
 871                                 channels_.push_back(ch);
 872                         }
 873                 }
 874         }
 875
 876         // Invalidate the logic output data if the channel assignment changed
 877         if (prev_channels.size() != channels_.size()) {
 878                 // The number of channels changed, there's definitely a difference
 879                 logic_mux_data_invalid_ = true;
 880         } else {
 881                 // Same number but assignment may still differ, so compare all channels
 882                 for (size_t i = 0; i < channels_.size(); i++) {
 883                         const decode::DecodeChannel& p_ch = prev_channels[i];
 884                         const decode::DecodeChannel& ch = channels_[i];
 885
 886                         if ((p_ch.pdch_ != ch.pdch_) ||
 887                                 (p_ch.assigned_signal != ch.assigned_signal)) {
 888                                 logic_mux_data_invalid_ = true;
 889                                 break;
 890                         }
 891                 }
 892
 893         }
 894
 895         channels_updated();
 896 }
 897
 898 void DecodeSignal::commit_decoder_channels()
 899 {
 900         // Submit channel list to every decoder, containing only the relevant channels
 901         for (shared_ptr<decode::Decoder> dec : stack_) {
 902                 vector<decode::DecodeChannel*> channel_list;
 903
 904                 for (decode::DecodeChannel& ch : channels_)
 905                         if (ch.decoder_ == dec)
 906                                 channel_list.push_back(&ch);
 907
 908                 dec->set_channels(channel_list);
 909         }
 910
 911         // Channel bit IDs must be in sync with the channel's apperance in channels_
 912         int id = 0;
 913         for (decode::DecodeChannel& ch : channels_)
 914                 if (ch.assigned_signal)
 915                         ch.bit_id = id++;
 916 }
 917
 918 void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end)
 919 {
 920         // Enforce end to be greater than start
 921         if (end <= start)
 922                 return;
 923
 924         // Fetch the channel segments and their data
 925         vector<shared_ptr<LogicSegment> > segments;
 926         vector<const uint8_t*> signal_data;
 927         vector<uint8_t> signal_in_bytepos;
 928         vector<uint8_t> signal_in_bitpos;
 929
 930         for (decode::DecodeChannel& ch : channels_)
 931                 if (ch.assigned_signal) {
 932                         const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
 933
 934                         shared_ptr<LogicSegment> segment;
 935                         try {
 936                                 segment = logic_data->logic_segments().at(segment_id);
 937                         } catch (out_of_range&) {
 938                                 qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \
 939                                         << "has no logic segment" << segment_id;
 940                                 return;
 941                         }
 942                         segments.push_back(segment);
 943
 944                         uint8_t* data = new uint8_t[(end - start) * segment->unit_size()];
 945                         segment->get_samples(start, end, data);
 946                         signal_data.push_back(data);
 947
 948                         const int bitpos = ch.assigned_signal->logic_bit_index();
 949                         signal_in_bytepos.push_back(bitpos / 8);
 950                         signal_in_bitpos.push_back(bitpos % 8);
 951                 }
 952
 953
 954         shared_ptr<LogicSegment> output_segment;
 955         try {
 956                 output_segment = logic_mux_data_->logic_segments().at(segment_id);
 957         } catch (out_of_range&) {
 958                 qDebug() << "Muxer error for" << name() << ": no logic mux segment" \
 959                         << segment_id << "in mux_logic_samples(), mux segments size is" \
 960                         << logic_mux_data_->logic_segments().size();
 961                 return;
 962         }
 963
 964         // Perform the muxing of signal data into the output data
 965         uint8_t* output = new uint8_t[(end - start) * output_segment->unit_size()];
 966         unsigned int signal_count = signal_data.size();
 967
 968         for (int64_t sample_cnt = 0; !logic_mux_interrupt_ && (sample_cnt < (end - start));
 969                 sample_cnt++) {
 970
 971                 int bitpos = 0;
 972                 uint8_t bytepos = 0;
 973
 974                 const int out_sample_pos = sample_cnt * output_segment->unit_size();
 975                 for (unsigned int i = 0; i < output_segment->unit_size(); i++)
 976                         output[out_sample_pos + i] = 0;
 977
 978                 for (unsigned int i = 0; i < signal_count; i++) {
 979                         const int in_sample_pos = sample_cnt * segments[i]->unit_size();
 980                         const uint8_t in_sample = 1 &
 981                                 ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i]));
 982
 983                         const uint8_t out_sample = output[out_sample_pos + bytepos];
 984
 985                         output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos);
 986
 987                         bitpos++;
 988                         if (bitpos > 7) {
 989                                 bitpos = 0;
 990                                 bytepos++;
 991                         }
 992                 }
 993         }
 994
 995         output_segment->append_payload(output, (end - start) * output_segment->unit_size());
 996         delete[] output;
 997
 998         for (const uint8_t* data : signal_data)
 999                 delete[] data;
1000 }
1001
1002 void DecodeSignal::logic_mux_proc()
1003 {
1004         uint32_t segment_id = 0;
1005
1006         assert(logic_mux_data_);
1007
1008         // Create initial logic mux segment
1009         shared_ptr<LogicSegment> output_segment =
1010                 make_shared<LogicSegment>(*logic_mux_data_, segment_id,
1011                         logic_mux_unit_size_, 0);
1012         logic_mux_data_->push_segment(output_segment);
1013
1014         output_segment->set_samplerate(get_input_samplerate(0));
1015
1016         do {
1017                 const uint64_t input_sample_count = get_working_sample_count(segment_id);
1018                 const uint64_t output_sample_count = output_segment->get_sample_count();
1019
1020                 const uint64_t samples_to_process =
1021                         (input_sample_count > output_sample_count) ?
1022                         (input_sample_count - output_sample_count) : 0;
1023
1024                 // Process the samples if necessary...
1025                 if (samples_to_process > 0) {
1026                         const uint64_t unit_size = output_segment->unit_size();
1027                         const uint64_t chunk_sample_count = DecodeChunkLength / unit_size;
1028
1029                         uint64_t processed_samples = 0;
1030                         do {
1031                                 const uint64_t start_sample = output_sample_count + processed_samples;
1032                                 const uint64_t sample_count =
1033                                         min(samples_to_process - processed_samples,     chunk_sample_count);
1034
1035                                 mux_logic_samples(segment_id, start_sample, start_sample + sample_count);
1036                                 processed_samples += sample_count;
1037
1038                                 // ...and process the newly muxed logic data
1039                                 decode_input_cond_.notify_one();
1040                         } while (!logic_mux_interrupt_ && (processed_samples < samples_to_process));
1041                 }
1042
1043                 if (samples_to_process == 0) {
1044                         // TODO Optimize this by caching the input segment count and only
1045                         // querying it when the cached value was reached
1046                         if (segment_id < get_input_segment_count() - 1) {
1047                                 // Process next segment
1048                                 segment_id++;
1049
1050                                 output_segment =
1051                                         make_shared<LogicSegment>(*logic_mux_data_, segment_id,
1052                                                 logic_mux_unit_size_, 0);
1053                                 logic_mux_data_->push_segment(output_segment);
1054
1055                                 output_segment->set_samplerate(get_input_samplerate(segment_id));
1056
1057                         } else {
1058                                 // All segments have been processed
1059                                 logic_mux_data_invalid_ = false;
1060
1061                                 // Wait for more input
1062                                 unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
1063                                 logic_mux_cond_.wait(logic_mux_lock);
1064                         }
1065                 }
1066
1067         } while (!logic_mux_interrupt_);
1068 }
1069
1070 void DecodeSignal::decode_data(
1071         const int64_t abs_start_samplenum, const int64_t sample_count,
1072         const shared_ptr<LogicSegment> input_segment)
1073 {
1074         const int64_t unit_size = input_segment->unit_size();
1075         const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
1076
1077         for (int64_t i = abs_start_samplenum;
1078                 error_message_.isEmpty() && !decode_interrupt_ &&
1079                         (i < (abs_start_samplenum + sample_count));
1080                 i += chunk_sample_count) {
1081
1082                 const int64_t chunk_end = min(i + chunk_sample_count,
1083                         abs_start_samplenum + sample_count);
1084
1085                 {
1086                         lock_guard<mutex> lock(output_mutex_);
1087                         // Update the sample count showing the samples including currently processed ones
1088                         segments_.at(current_segment_id_).samples_decoded_incl = chunk_end;
1089                 }
1090
1091                 int64_t data_size = (chunk_end - i) * unit_size;
1092                 uint8_t* chunk = new uint8_t[data_size];
1093                 input_segment->get_samples(i, chunk_end, chunk);
1094
1095                 if (srd_session_send(srd_session_, i, chunk_end, chunk,
1096                                 data_size, unit_size) != SRD_OK)
1097                         set_error_message(tr("Decoder reported an error"));
1098
1099                 delete[] chunk;
1100
1101                 {
1102                         lock_guard<mutex> lock(output_mutex_);
1103                         // Now that all samples are processed, the exclusive sample count catches up
1104                         segments_.at(current_segment_id_).samples_decoded_excl = chunk_end;
1105                 }
1106
1107                 // Notify the frontend that we processed some data and
1108                 // possibly have new annotations as well
1109                 new_annotations();
1110
1111                 if (decode_paused_) {
1112                         unique_lock<mutex> pause_wait_lock(decode_pause_mutex_);
1113                         decode_pause_cond_.wait(pause_wait_lock);
1114                 }
1115         }
1116 }
1117
1118 void DecodeSignal::decode_proc()
1119 {
1120         current_segment_id_ = 0;
1121
1122         // If there is no input data available yet, wait until it is or we're interrupted
1123         if (logic_mux_data_->logic_segments().size() == 0) {
1124                 unique_lock<mutex> input_wait_lock(input_mutex_);
1125                 decode_input_cond_.wait(input_wait_lock);
1126         }
1127
1128         if (decode_interrupt_)
1129                 return;
1130
1131         shared_ptr<LogicSegment> input_segment = logic_mux_data_->logic_segments().front();
1132         assert(input_segment);
1133
1134         // Create the initial segment and set its sample rate so that we can pass it to SRD
1135         create_decode_segment();
1136         segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
1137         segments_.at(current_segment_id_).start_time = input_segment->start_time();
1138
1139         start_srd_session();
1140
1141         uint64_t sample_count = 0;
1142         uint64_t abs_start_samplenum = 0;
1143         do {
1144                 // Keep processing new samples until we exhaust the input data
1145                 do {
1146                         lock_guard<mutex> input_lock(input_mutex_);
1147                         sample_count = input_segment->get_sample_count() - abs_start_samplenum;
1148
1149                         if (sample_count > 0) {
1150                                 decode_data(abs_start_samplenum, sample_count, input_segment);
1151                                 abs_start_samplenum += sample_count;
1152                         }
1153                 } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
1154
1155                 if (error_message_.isEmpty() && !decode_interrupt_ && sample_count == 0) {
1156                         if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) {
1157                                 // Process next segment
1158                                 current_segment_id_++;
1159
1160                                 try {
1161                                         input_segment = logic_mux_data_->logic_segments().at(current_segment_id_);
1162                                 } catch (out_of_range&) {
1163                                         qDebug() << "Decode error for" << name() << ": no logic mux segment" \
1164                                                 << current_segment_id_ << "in decode_proc(), mux segments size is" \
1165                                                 << logic_mux_data_->logic_segments().size();
1166                                         return;
1167                                 }
1168                                 abs_start_samplenum = 0;
1169
1170                                 // Create the next segment and set its metadata
1171                                 create_decode_segment();
1172                                 segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
1173                                 segments_.at(current_segment_id_).start_time = input_segment->start_time();
1174
1175                                 // Reset decoder state but keep the decoder stack intact
1176                                 terminate_srd_session();
1177                         } else {
1178                                 // All segments have been processed
1179                                 decode_finished();
1180
1181                                 // Wait for new input data or an interrupt was requested
1182                                 unique_lock<mutex> input_wait_lock(input_mutex_);
1183                                 decode_input_cond_.wait(input_wait_lock);
1184                         }
1185                 }
1186         } while (error_message_.isEmpty() && !decode_interrupt_);
1187
1188         // Potentially reap decoders when the application no longer is
1189         // interested in their (pending) results.
1190         if (decode_interrupt_)
1191                 terminate_srd_session();
1192 }
1193
1194 void DecodeSignal::start_srd_session()
1195 {
1196         // If there were stack changes, the session has been destroyed by now, so if
1197         // it hasn't been destroyed, we can just reset and re-use it
1198         if (srd_session_) {
1199                 // When a decoder stack was created before, re-use it
1200                 // for the next stream of input data, after terminating
1201                 // potentially still executing operations, and resetting
1202                 // internal state. Skip the rather expensive (teardown
1203                 // and) construction of another decoder stack.
1204
1205                 // TODO Reduce redundancy, use a common code path for
1206                 // the meta/start sequence?
1207                 terminate_srd_session();
1208
1209                 // Metadata is cleared also, so re-set it
1210                 uint64_t samplerate = 0;
1211                 if (segments_.size() > 0)
1212                         samplerate = segments_.at(current_segment_id_).samplerate;
1213                 if (samplerate)
1214                         srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1215                                 g_variant_new_uint64(samplerate));
1216                 for (const shared_ptr<decode::Decoder>& dec : stack_)
1217                         dec->apply_all_options();
1218                 srd_session_start(srd_session_);
1219
1220                 return;
1221         }
1222
1223         // Create the session
1224         srd_session_new(&srd_session_);
1225         assert(srd_session_);
1226
1227         // Create the decoders
1228         srd_decoder_inst *prev_di = nullptr;
1229         for (const shared_ptr<decode::Decoder>& dec : stack_) {
1230                 srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_);
1231
1232                 if (!di) {
1233                         set_error_message(tr("Failed to create decoder instance"));
1234                         srd_session_destroy(srd_session_);
1235                         srd_session_ = nullptr;
1236                         return;
1237                 }
1238
1239                 if (prev_di)
1240                         srd_inst_stack(srd_session_, prev_di, di);
1241
1242                 prev_di = di;
1243         }
1244
1245         // Start the session
1246         if (segments_.size() > 0)
1247                 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1248                         g_variant_new_uint64(segments_.at(current_segment_id_).samplerate));
1249
1250         srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
1251                 DecodeSignal::annotation_callback, this);
1252
1253         srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_BINARY,
1254                 DecodeSignal::binary_callback, this);
1255
1256         srd_session_start(srd_session_);
1257
1258         // We just recreated the srd session, so all stack changes are applied now
1259         stack_config_changed_ = false;
1260 }
1261
1262 void DecodeSignal::terminate_srd_session()
1263 {
1264         // Call the "terminate and reset" routine for the decoder stack
1265         // (if available). This does not harm those stacks which already
1266         // have completed their operation, and reduces response time for
1267         // those stacks which still are processing data while the
1268         // application no longer wants them to.
1269         if (srd_session_) {
1270                 srd_session_terminate_reset(srd_session_);
1271
1272                 // Metadata is cleared also, so re-set it
1273                 uint64_t samplerate = 0;
1274                 if (segments_.size() > 0)
1275                         samplerate = segments_.at(current_segment_id_).samplerate;
1276                 if (samplerate)
1277                         srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1278                                 g_variant_new_uint64(samplerate));
1279                 for (const shared_ptr<decode::Decoder>& dec : stack_)
1280                         dec->apply_all_options();
1281         }
1282 }
1283
1284 void DecodeSignal::stop_srd_session()
1285 {
1286         if (srd_session_) {
1287                 // Destroy the session
1288                 srd_session_destroy(srd_session_);
1289                 srd_session_ = nullptr;
1290
1291                 // Mark the decoder instances as non-existant since they were deleted
1292                 for (const shared_ptr<decode::Decoder>& dec : stack_)
1293                         dec->invalidate_decoder_inst();
1294         }
1295 }
1296
1297 void DecodeSignal::connect_input_notifiers()
1298 {
1299         // Disconnect the notification slot from the previous set of signals
1300         disconnect(this, SLOT(on_data_cleared()));
1301         disconnect(this, SLOT(on_data_received()));
1302
1303         // Connect the currently used signals to our slot
1304         for (decode::DecodeChannel& ch : channels_) {
1305                 if (!ch.assigned_signal)
1306                         continue;
1307
1308                 const data::SignalBase *signal = ch.assigned_signal;
1309                 connect(signal, SIGNAL(samples_cleared()),
1310                         this, SLOT(on_data_cleared()));
1311                 connect(signal, SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)),
1312                         this, SLOT(on_data_received()));
1313         }
1314 }
1315
1316 void DecodeSignal::create_decode_segment()
1317 {
1318         // Create annotation segment
1319         segments_.emplace_back(DecodeSegment());
1320
1321         // Add annotation classes
1322         for (const shared_ptr<decode::Decoder>& dec : stack_) {
1323                 assert(dec);
1324                 const srd_decoder *const decc = dec->decoder();
1325                 assert(dec->decoder());
1326
1327                 int row_index = 0;
1328                 // Add a row for the decoder if it doesn't have a row list
1329                 if (!decc->annotation_rows)
1330                         (segments_.back().annotation_rows)[Row(row_index++, decc)] =
1331                                 decode::RowData();
1332
1333                 // Add the decoder rows
1334                 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
1335                         const srd_decoder_annotation_row *const ann_row =
1336                                 (srd_decoder_annotation_row *)l->data;
1337                         assert(ann_row);
1338
1339                         const Row row(row_index++, decc, ann_row);
1340
1341                         // Add a new empty row data object
1342                         (segments_.back().annotation_rows)[row] =
1343                                 decode::RowData();
1344                 }
1345         }
1346
1347         // Prepare our binary output classes
1348         for (const shared_ptr<decode::Decoder>& dec : stack_) {
1349                 uint32_t n = dec->get_binary_class_count();
1350
1351                 for (uint32_t i = 0; i < n; i++)
1352                         segments_.back().binary_classes.push_back(
1353                                 {dec.get(), dec->get_binary_class(i), deque<DecodeBinaryDataChunk>()});
1354         }
1355 }
1356
1357 void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal)
1358 {
1359         assert(pdata);
1360         assert(decode_signal);
1361
1362         DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1363         assert(ds);
1364
1365         if (ds->decode_interrupt_)
1366                 return;
1367
1368         lock_guard<mutex> lock(ds->output_mutex_);
1369
1370         // Get the decoder and the annotation data
1371         assert(pdata->pdo);
1372         assert(pdata->pdo->di);
1373         const srd_decoder *const decc = pdata->pdo->di->decoder;
1374         assert(decc);
1375
1376         const srd_proto_data_annotation *const pda = (const srd_proto_data_annotation*)pdata->data;
1377         assert(pda);
1378
1379         // Find the row
1380         auto row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.end();
1381
1382         // Try finding a better row match than the default by looking up the sub-row of this class
1383         const auto format = pda->ann_class;
1384         const auto r = ds->class_rows_.find(make_pair(decc, format));
1385         if (r != ds->class_rows_.end())
1386                 row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find((*r).second);
1387         else {
1388                 // Failing that, use the decoder as a key
1389                 row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find(Row(0, decc));
1390         }
1391
1392         if (row_iter == ds->segments_.at(ds->current_segment_id_).annotation_rows.end()) {
1393                 qDebug() << "Unexpected annotation: decoder = " << decc <<
1394                         ", format = " << format;
1395                 assert(false);
1396                 return;
1397         }
1398
1399         // Add the annotation
1400         (*row_iter).second.emplace_annotation(pdata, &((*row_iter).first));
1401 }
1402
1403 void DecodeSignal::binary_callback(srd_proto_data *pdata, void *decode_signal)
1404 {
1405         assert(pdata);
1406         assert(decode_signal);
1407
1408         DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1409         assert(ds);
1410
1411         if (ds->decode_interrupt_)
1412                 return;
1413
1414         // Get the decoder and the binary data
1415         assert(pdata->pdo);
1416         assert(pdata->pdo->di);
1417         const srd_decoder *const decc = pdata->pdo->di->decoder;
1418         assert(decc);
1419
1420         const srd_proto_data_binary *const pdb = (const srd_proto_data_binary*)pdata->data;
1421         assert(pdb);
1422
1423         // Find the matching DecodeBinaryClass
1424         DecodeSegment* segment = &(ds->segments_.at(ds->current_segment_id_));
1425
1426         DecodeBinaryClass* bin_class = nullptr;
1427         for (DecodeBinaryClass& bc : segment->binary_classes)
1428                 if ((bc.decoder->decoder() == decc) && (bc.info->bin_class_id == (uint32_t)pdb->bin_class))
1429                         bin_class = &bc;
1430
1431         if (!bin_class) {
1432                 qWarning() << "Could not find valid DecodeBinaryClass in segment" <<
1433                                 ds->current_segment_id_ << "for binary class ID" << pdb->bin_class <<
1434                                 ", segment only knows" << segment->binary_classes.size() << "classes";
1435                 return;
1436         }
1437
1438         // Add the data chunk
1439         bin_class->chunks.emplace_back();
1440         DecodeBinaryDataChunk* chunk = &(bin_class->chunks.back());
1441
1442         chunk->sample = pdata->start_sample;
1443         chunk->data.resize(pdb->size);
1444         memcpy(chunk->data.data(), pdb->data, pdb->size);
1445
1446         // Find decoder class instance
1447         Decoder* dec = nullptr;
1448         for (const shared_ptr<decode::Decoder>& d : ds->decoder_stack())
1449                 if (d->decoder() == decc) {
1450                         dec = d.get();
1451                         break;
1452                 }
1453
1454         ds->new_binary_data(ds->current_segment_id_, (void*)dec, pdb->bin_class);
1455 }
1456
1457 void DecodeSignal::on_capture_state_changed(int state)
1458 {
1459         // If a new acquisition was started, we need to start decoding from scratch
1460         if (state == Session::Running) {
1461                 logic_mux_data_invalid_ = true;
1462                 begin_decode();
1463         }
1464 }
1465
1466 void DecodeSignal::on_data_cleared()
1467 {
1468         reset_decode();
1469 }
1470
1471 void DecodeSignal::on_data_received()
1472 {
1473         // If we detected a lack of input data when trying to start decoding,
1474         // we have set an error message. Only try again if we now have data
1475         // to work with
1476         if ((!error_message_.isEmpty()) && (get_input_segment_count() == 0))
1477                 return;
1478
1479         if (!logic_mux_thread_.joinable())
1480                 begin_decode();
1481         else
1482                 logic_mux_cond_.notify_one();
1483 }
1484
1485 } // namespace data
1486 } // namespace pv