pv/session.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012-14 Joel Holdsworth <joel@airwebreathe.org.uk>
   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 <cassert>
  21 #include <memory>
  22 #include <mutex>
  23 #include <stdexcept>
  24
  25 #include <sys/stat.h>
  26
  27 #include <QDebug>
  28 #include <QDir>
  29 #include <QFileInfo>
  30
  31 #include "devicemanager.hpp"
  32 #include "mainwindow.hpp"
  33 #include "session.hpp"
  34 #include "util.hpp"
  35
  36 #include "data/analog.hpp"
  37 #include "data/analogsegment.hpp"
  38 #include "data/decode/decoder.hpp"
  39 #include "data/logic.hpp"
  40 #include "data/logicsegment.hpp"
  41 #include "data/signalbase.hpp"
  42
  43 #include "devices/hardwaredevice.hpp"
  44 #include "devices/inputfile.hpp"
  45 #include "devices/sessionfile.hpp"
  46
  47 #include "toolbars/mainbar.hpp"
  48
  49 #include "views/trace/analogsignal.hpp"
  50 #include "views/trace/decodetrace.hpp"
  51 #include "views/trace/logicsignal.hpp"
  52 #include "views/trace/signal.hpp"
  53 #include "views/trace/view.hpp"
  54
  55 #include <libsigrokcxx/libsigrokcxx.hpp>
  56
  57 #ifdef ENABLE_FLOW
  58 #include <gstreamermm.h>
  59 #include <libsigrokflow/libsigrokflow.hpp>
  60 #endif
  61
  62 #ifdef ENABLE_DECODE
  63 #include <libsigrokdecode/libsigrokdecode.h>
  64 #include "data/decodesignal.hpp"
  65 #endif
  66
  67 using std::bad_alloc;
  68 using std::dynamic_pointer_cast;
  69 using std::find_if;
  70 using std::function;
  71 using std::list;
  72 using std::lock_guard;
  73 using std::make_pair;
  74 using std::make_shared;
  75 using std::map;
  76 using std::max;
  77 using std::move;
  78 using std::mutex;
  79 using std::pair;
  80 using std::recursive_mutex;
  81 using std::runtime_error;
  82 using std::shared_ptr;
  83 using std::string;
  84 #ifdef ENABLE_FLOW
  85 using std::unique_lock;
  86 #endif
  87 using std::unique_ptr;
  88 using std::vector;
  89
  90 using sigrok::Analog;
  91 using sigrok::Channel;
  92 using sigrok::ConfigKey;
  93 using sigrok::DatafeedCallbackFunction;
  94 using sigrok::Error;
  95 using sigrok::InputFormat;
  96 using sigrok::Logic;
  97 using sigrok::Meta;
  98 using sigrok::Packet;
  99 using sigrok::Session;
 100
 101 using Glib::VariantBase;
 102
 103 #ifdef ENABLE_FLOW
 104 using Gst::Bus;
 105 using Gst::ElementFactory;
 106 using Gst::Pipeline;
 107 #endif
 108
 109 using pv::data::SignalGroup;
 110 using pv::util::Timestamp;
 111 using pv::views::trace::Signal;
 112 using pv::views::trace::AnalogSignal;
 113 using pv::views::trace::LogicSignal;
 114
 115 namespace pv {
 116
 117 shared_ptr<sigrok::Context> Session::sr_context;
 118
 119 Session::Session(DeviceManager &device_manager, QString name) :
 120         shutting_down_(false),
 121         device_manager_(device_manager),
 122         default_name_(name),
 123         name_(name),
 124         capture_state_(Stopped),
 125         cur_samplerate_(0),
 126         data_saved_(true)
 127 {
 128 }
 129
 130 Session::~Session()
 131 {
 132         shutting_down_ = true;
 133
 134         // Stop and join to the thread
 135         stop_capture();
 136
 137         for (SignalGroup* group : signal_groups_) {
 138                 group->clear();
 139                 delete group;
 140         }
 141 }
 142
 143 DeviceManager& Session::device_manager()
 144 {
 145         return device_manager_;
 146 }
 147
 148 const DeviceManager& Session::device_manager() const
 149 {
 150         return device_manager_;
 151 }
 152
 153 shared_ptr<sigrok::Session> Session::session() const
 154 {
 155         if (!device_)
 156                 return shared_ptr<sigrok::Session>();
 157         return device_->session();
 158 }
 159
 160 shared_ptr<devices::Device> Session::device() const
 161 {
 162         return device_;
 163 }
 164
 165 QString Session::name() const
 166 {
 167         return name_;
 168 }
 169
 170 void Session::set_name(QString name)
 171 {
 172         if (default_name_.isEmpty())
 173                 default_name_ = name;
 174
 175         name_ = name;
 176
 177         name_changed();
 178 }
 179
 180 QString Session::save_path() const
 181 {
 182         return save_path_;
 183 }
 184
 185 void Session::set_save_path(QString path)
 186 {
 187         save_path_ = path;
 188 }
 189
 190 const vector< shared_ptr<views::ViewBase> > Session::views() const
 191 {
 192         return views_;
 193 }
 194
 195 shared_ptr<views::ViewBase> Session::main_view() const
 196 {
 197         return main_view_;
 198 }
 199
 200 void Session::set_main_bar(shared_ptr<pv::toolbars::MainBar> main_bar)
 201 {
 202         main_bar_ = main_bar;
 203 }
 204
 205 shared_ptr<pv::toolbars::MainBar> Session::main_bar() const
 206 {
 207         return main_bar_;
 208 }
 209
 210 bool Session::data_saved() const
 211 {
 212         return data_saved_;
 213 }
 214
 215 void Session::save_setup(QSettings &settings) const
 216 {
 217         int i = 0;
 218
 219         // Save channels and decoders
 220         for (const shared_ptr<data::SignalBase>& base : signalbases_) {
 221 #ifdef ENABLE_DECODE
 222                 if (base->is_decode_signal()) {
 223                         settings.beginGroup("decode_signal" + QString::number(i++));
 224                         base->save_settings(settings);
 225                         settings.endGroup();
 226                 } else
 227 #endif
 228                 {
 229                         settings.beginGroup(base->internal_name());
 230                         base->save_settings(settings);
 231                         settings.endGroup();
 232                 }
 233         }
 234
 235         settings.setValue("decode_signals", i);
 236
 237         // Save view states and their signal settings
 238         // Note: main_view must be saved as view0
 239         i = 0;
 240         settings.beginGroup("view" + QString::number(i++));
 241         main_view_->save_settings(settings);
 242         settings.endGroup();
 243
 244         for (const shared_ptr<views::ViewBase>& view : views_) {
 245                 if (view != main_view_) {
 246                         settings.beginGroup("view" + QString::number(i++));
 247                         settings.setValue("type", view->get_type());
 248                         view->save_settings(settings);
 249                         settings.endGroup();
 250                 }
 251         }
 252
 253         settings.setValue("views", i);
 254
 255         int view_id = 0;
 256         i = 0;
 257         for (const shared_ptr<views::ViewBase>& vb : views_) {
 258                 shared_ptr<views::trace::View> tv = dynamic_pointer_cast<views::trace::View>(vb);
 259                 if (tv) {
 260                         for (const shared_ptr<views::trace::TimeItem>& time_item : tv->time_items()) {
 261
 262                                 const shared_ptr<views::trace::Flag> flag =
 263                                         dynamic_pointer_cast<views::trace::Flag>(time_item);
 264                                 if (flag) {
 265                                         if (!flag->enabled())
 266                                                 continue;
 267
 268                                         settings.beginGroup("meta_obj" + QString::number(i++));
 269                                         settings.setValue("type", "time_marker");
 270                                         settings.setValue("assoc_view", view_id);
 271                                         GlobalSettings::store_timestamp(settings, "time", flag->time());
 272                                         settings.setValue("text", flag->get_text());
 273                                         settings.endGroup();
 274                                 }
 275                         }
 276
 277                         if (tv->cursors_shown()) {
 278                                 settings.beginGroup("meta_obj" + QString::number(i++));
 279                                 settings.setValue("type", "selection");
 280                                 settings.setValue("assoc_view", view_id);
 281                                 const shared_ptr<views::trace::CursorPair> cp = tv->cursors();
 282                                 GlobalSettings::store_timestamp(settings, "start_time", cp->first()->time());
 283                                 GlobalSettings::store_timestamp(settings, "end_time", cp->second()->time());
 284                                 settings.endGroup();
 285                         }
 286                 }
 287
 288                 view_id++;
 289         }
 290
 291         settings.setValue("meta_objs", i);
 292 }
 293
 294 void Session::save_settings(QSettings &settings) const
 295 {
 296         map<string, string> dev_info;
 297         list<string> key_list;
 298
 299         if (device_) {
 300                 shared_ptr<devices::HardwareDevice> hw_device =
 301                         dynamic_pointer_cast< devices::HardwareDevice >(device_);
 302
 303                 if (hw_device) {
 304                         settings.setValue("device_type", "hardware");
 305                         settings.beginGroup("device");
 306
 307                         key_list.emplace_back("vendor");
 308                         key_list.emplace_back("model");
 309                         key_list.emplace_back("version");
 310                         key_list.emplace_back("serial_num");
 311                         key_list.emplace_back("connection_id");
 312
 313                         dev_info = device_manager_.get_device_info(device_);
 314
 315                         for (string& key : key_list) {
 316                                 if (dev_info.count(key))
 317                                         settings.setValue(QString::fromUtf8(key.c_str()),
 318                                                         QString::fromUtf8(dev_info.at(key).c_str()));
 319                                 else
 320                                         settings.remove(QString::fromUtf8(key.c_str()));
 321                         }
 322
 323                         settings.endGroup();
 324                 }
 325
 326                 // Having saved the data to srzip overrides the current device. This is
 327                 // a crappy hack around the fact that saving e.g. an imported file to
 328                 // srzip would require changing the underlying libsigrok device
 329                 if (!save_path_.isEmpty()) {
 330                         QFileInfo fi = QFileInfo(QDir(save_path_), name_);
 331                         settings.setValue("device_type", "sessionfile");
 332                         settings.beginGroup("device");
 333                         settings.setValue("filename", fi.absoluteFilePath());
 334                         settings.endGroup();
 335                 } else {
 336                         shared_ptr<devices::SessionFile> sessionfile_device =
 337                                 dynamic_pointer_cast<devices::SessionFile>(device_);
 338
 339                         if (sessionfile_device) {
 340                                 settings.setValue("device_type", "sessionfile");
 341                                 settings.beginGroup("device");
 342                                 settings.setValue("filename", QString::fromStdString(
 343                                         sessionfile_device->full_name()));
 344                                 settings.endGroup();
 345                         }
 346
 347                         shared_ptr<devices::InputFile> inputfile_device =
 348                                 dynamic_pointer_cast<devices::InputFile>(device_);
 349
 350                         if (inputfile_device) {
 351                                 settings.setValue("device_type", "inputfile");
 352                                 settings.beginGroup("device");
 353                                 inputfile_device->save_meta_to_settings(settings);
 354                                 settings.endGroup();
 355                         }
 356                 }
 357
 358                 save_setup(settings);
 359         }
 360 }
 361
 362 void Session::restore_setup(QSettings &settings)
 363 {
 364         // Restore channels
 365         for (shared_ptr<data::SignalBase> base : signalbases_) {
 366                 settings.beginGroup(base->internal_name());
 367                 base->restore_settings(settings);
 368                 settings.endGroup();
 369         }
 370
 371         // Restore decoders
 372 #ifdef ENABLE_DECODE
 373         int decode_signals = settings.value("decode_signals").toInt();
 374
 375         for (int i = 0; i < decode_signals; i++) {
 376                 settings.beginGroup("decode_signal" + QString::number(i));
 377                 shared_ptr<data::DecodeSignal> signal = add_decode_signal();
 378                 signal->restore_settings(settings);
 379                 settings.endGroup();
 380         }
 381 #endif
 382
 383         // Restore views
 384         int views = settings.value("views").toInt();
 385
 386         for (int i = 0; i < views; i++) {
 387                 settings.beginGroup("view" + QString::number(i));
 388
 389                 if (i > 0) {
 390                         views::ViewType type = (views::ViewType)settings.value("type").toInt();
 391                         add_view(type, this);
 392                         views_.back()->restore_settings(settings);
 393                 } else
 394                         main_view_->restore_settings(settings);
 395
 396                 settings.endGroup();
 397         }
 398
 399         // Restore meta objects like markers and cursors
 400         int meta_objs = settings.value("meta_objs").toInt();
 401
 402         for (int i = 0; i < meta_objs; i++) {
 403                 settings.beginGroup("meta_obj" + QString::number(i));
 404
 405                 shared_ptr<views::ViewBase> vb;
 406                 shared_ptr<views::trace::View> tv;
 407                 if (settings.contains("assoc_view"))
 408                         vb = views_.at(settings.value("assoc_view").toInt());
 409
 410                 if (vb)
 411                         tv = dynamic_pointer_cast<views::trace::View>(vb);
 412
 413                 const QString type = settings.value("type").toString();
 414
 415                 if ((type == "time_marker") && tv) {
 416                         Timestamp ts = GlobalSettings::restore_timestamp(settings, "time");
 417                         shared_ptr<views::trace::Flag> flag = tv->add_flag(ts);
 418                         flag->set_text(settings.value("text").toString());
 419                 }
 420
 421                 if ((type == "selection") && tv) {
 422                         Timestamp start = GlobalSettings::restore_timestamp(settings, "start_time");
 423                         Timestamp end = GlobalSettings::restore_timestamp(settings, "end_time");
 424                         tv->set_cursors(start, end);
 425                         tv->show_cursors();
 426                 }
 427
 428                 settings.endGroup();
 429         }
 430 }
 431
 432 void Session::restore_settings(QSettings &settings)
 433 {
 434         shared_ptr<devices::Device> device;
 435
 436         const QString device_type = settings.value("device_type").toString();
 437
 438         if (device_type == "hardware") {
 439                 map<string, string> dev_info;
 440                 list<string> key_list;
 441
 442                 // Re-select last used device if possible but only if it's not demo
 443                 settings.beginGroup("device");
 444                 key_list.emplace_back("vendor");
 445                 key_list.emplace_back("model");
 446                 key_list.emplace_back("version");
 447                 key_list.emplace_back("serial_num");
 448                 key_list.emplace_back("connection_id");
 449
 450                 for (string key : key_list) {
 451                         const QString k = QString::fromStdString(key);
 452                         if (!settings.contains(k))
 453                                 continue;
 454
 455                         const string value = settings.value(k).toString().toStdString();
 456                         if (!value.empty())
 457                                 dev_info.insert(make_pair(key, value));
 458                 }
 459
 460                 if (dev_info.count("model") > 0)
 461                         device = device_manager_.find_device_from_info(dev_info);
 462
 463                 if (device)
 464                         set_device(device);
 465
 466                 settings.endGroup();
 467         }
 468
 469
 470         QString filename;
 471         if ((device_type == "sessionfile") || (device_type == "inputfile")) {
 472                 if (device_type == "sessionfile") {
 473                         settings.beginGroup("device");
 474                         filename = settings.value("filename").toString();
 475                         settings.endGroup();
 476
 477                         if (QFileInfo(filename).isReadable())
 478                                 device = make_shared<devices::SessionFile>(device_manager_.context(),
 479                                         filename.toStdString());
 480                 }
 481
 482                 if (device_type == "inputfile") {
 483                         settings.beginGroup("device");
 484                         device = make_shared<devices::InputFile>(device_manager_.context(),
 485                                 settings);
 486                         settings.endGroup();
 487                 }
 488
 489                 if (device) {
 490                         set_device(device);
 491
 492                         start_capture([](QString infoMessage) {
 493                                 // TODO Emulate noquote()
 494                                 qDebug() << "Session error:" << infoMessage; });
 495
 496                         set_name(QString::fromStdString(
 497                                 dynamic_pointer_cast<devices::File>(device)->display_name(device_manager_)));
 498
 499                         if (!filename.isEmpty()) {
 500                                 // Only set the save path if we load an srzip file
 501                                 if (device_type == "sessionfile")
 502                                         set_save_path(QFileInfo(filename).absolutePath());
 503
 504                                 set_name(QFileInfo(filename).fileName());
 505                         }
 506                 }
 507         }
 508
 509         if (device)
 510                 restore_setup(settings);
 511 }
 512
 513 void Session::select_device(shared_ptr<devices::Device> device)
 514 {
 515         try {
 516                 if (device)
 517                         set_device(device);
 518                 else
 519                         set_default_device();
 520         } catch (const QString &e) {
 521                 MainWindow::show_session_error(tr("Failed to select device"), e);
 522         }
 523 }
 524
 525 void Session::set_device(shared_ptr<devices::Device> device)
 526 {
 527         assert(device);
 528
 529         // Ensure we are not capturing before setting the device
 530         stop_capture();
 531
 532         if (device_)
 533                 device_->close();
 534
 535         device_.reset();
 536
 537         // Revert name back to default name (e.g. "Session 1") as the data is gone
 538         name_ = default_name_;
 539         name_changed();
 540
 541         // Remove all stored data and reset all views
 542         for (shared_ptr<views::ViewBase> view : views_) {
 543                 view->clear_signalbases();
 544 #ifdef ENABLE_DECODE
 545                 view->clear_decode_signals();
 546 #endif
 547                 view->reset_view_state();
 548         }
 549
 550         for (SignalGroup* group : signal_groups_) {
 551                 group->clear();
 552                 delete group;
 553         }
 554         signal_groups_.clear();
 555
 556         for (const shared_ptr<data::SignalData>& d : all_signal_data_)
 557                 d->clear();
 558
 559         all_signal_data_.clear();
 560         signalbases_.clear();
 561         cur_logic_segment_.reset();
 562
 563         for (auto& entry : cur_analog_segments_) {
 564                 shared_ptr<sigrok::Channel>(entry.first).reset();
 565                 shared_ptr<data::AnalogSegment>(entry.second).reset();
 566         }
 567
 568         logic_data_.reset();
 569
 570         signals_changed();
 571
 572         device_ = move(device);
 573
 574         try {
 575                 device_->open();
 576         } catch (const QString &e) {
 577                 device_.reset();
 578                 MainWindow::show_session_error(tr("Failed to open device"), e);
 579         }
 580
 581         if (device_) {
 582                 device_->session()->add_datafeed_callback([=]
 583                         (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) {
 584                                 data_feed_in(device, packet);
 585                         });
 586
 587                 update_signals();
 588         }
 589
 590         device_changed();
 591 }
 592
 593 void Session::set_default_device()
 594 {
 595         const list< shared_ptr<devices::HardwareDevice> > &devices =
 596                 device_manager_.devices();
 597
 598         if (devices.empty())
 599                 return;
 600
 601         // Try and find the demo device and select that by default
 602         const auto iter = find_if(devices.begin(), devices.end(),
 603                 [] (const shared_ptr<devices::HardwareDevice> &d) {
 604                         return d->hardware_device()->driver()->name() == "demo"; });
 605         set_device((iter == devices.end()) ? devices.front() : *iter);
 606 }
 607
 608 bool Session::using_file_device() const
 609 {
 610         shared_ptr<devices::SessionFile> sessionfile_device =
 611                 dynamic_pointer_cast<devices::SessionFile>(device_);
 612
 613         shared_ptr<devices::InputFile> inputfile_device =
 614                 dynamic_pointer_cast<devices::InputFile>(device_);
 615
 616         return (sessionfile_device || inputfile_device);
 617 }
 618
 619 /**
 620  * Convert generic options to data types that are specific to InputFormat.
 621  *
 622  * @param[in] user_spec Vector of tokenized words, string format.
 623  * @param[in] fmt_opts Input format's options, result of InputFormat::options().
 624  *
 625  * @return Map of options suitable for InputFormat::create_input().
 626  */
 627 map<string, Glib::VariantBase>
 628 Session::input_format_options(vector<string> user_spec,
 629                 map<string, shared_ptr<Option>> fmt_opts)
 630 {
 631         map<string, Glib::VariantBase> result;
 632
 633         for (auto& entry : user_spec) {
 634                 /*
 635                  * Split key=value specs. Accept entries without separator
 636                  * (for simplified boolean specifications).
 637                  */
 638                 string key, val;
 639                 size_t pos = entry.find("=");
 640                 if (pos == std::string::npos) {
 641                         key = entry;
 642                         val = "";
 643                 } else {
 644                         key = entry.substr(0, pos);
 645                         val = entry.substr(pos + 1);
 646                 }
 647
 648                 /*
 649                  * Skip user specifications that are not a member of the
 650                  * format's set of supported options. Have the text input
 651                  * spec converted to the required input format specific
 652                  * data type.
 653                  */
 654                 auto found = fmt_opts.find(key);
 655                 if (found == fmt_opts.end()) {
 656                         qCritical() << "Supplied input option" << QString::fromStdString(key) <<
 657                                 "is not a valid option for this input module, it will be ignored!";
 658                         continue;
 659                 }
 660
 661                 shared_ptr<Option> opt = found->second;
 662                 result[key] = opt->parse_string(val);
 663         }
 664
 665         return result;
 666 }
 667
 668 void Session::load_init_file(const string &file_name,
 669         const string &format, const string &setup_file_name)
 670 {
 671         shared_ptr<InputFormat> input_format;
 672         map<string, Glib::VariantBase> input_opts;
 673
 674         if (!format.empty()) {
 675                 const map<string, shared_ptr<InputFormat> > formats =
 676                         device_manager_.context()->input_formats();
 677                 auto user_opts = pv::util::split_string(format, ":");
 678                 string user_name = user_opts.front();
 679                 user_opts.erase(user_opts.begin());
 680                 const auto iter = find_if(formats.begin(), formats.end(),
 681                         [&](const pair<string, shared_ptr<InputFormat> > f) {
 682                                 return f.first == user_name; });
 683                 if (iter == formats.end()) {
 684                         MainWindow::show_session_error(tr("Error"),
 685                                 tr("Unexpected input format: %1").arg(QString::fromStdString(format)));
 686                         return;
 687                 }
 688                 input_format = (*iter).second;
 689                 input_opts = input_format_options(user_opts,
 690                         input_format->options());
 691         }
 692
 693         load_file(QString::fromStdString(file_name), QString::fromStdString(setup_file_name),
 694                 input_format, input_opts);
 695 }
 696
 697 void Session::load_file(QString file_name, QString setup_file_name,
 698         shared_ptr<sigrok::InputFormat> format, const map<string, Glib::VariantBase> &options)
 699 {
 700         const QString errorMessage(
 701                 QString("Failed to load file %1").arg(file_name));
 702
 703         // In the absence of a caller's format spec, try to auto detect.
 704         // Assume "sigrok session file" upon lookup miss.
 705         if (!format)
 706                 format = device_manager_.context()->input_format_match(file_name.toStdString());
 707         try {
 708                 if (format)
 709                         set_device(shared_ptr<devices::Device>(
 710                                 new devices::InputFile(
 711                                         device_manager_.context(),
 712                                         file_name.toStdString(),
 713                                         format, options)));
 714                 else
 715                         set_device(shared_ptr<devices::Device>(
 716                                 new devices::SessionFile(
 717                                         device_manager_.context(),
 718                                         file_name.toStdString())));
 719         } catch (Error& e) {
 720                 MainWindow::show_session_error(tr("Failed to load %1").arg(file_name), e.what());
 721                 set_default_device();
 722                 main_bar_->update_device_list();
 723                 return;
 724         }
 725
 726         // Use the input file with .pvs extension if no setup file was given
 727         if (setup_file_name.isEmpty()) {
 728                 setup_file_name = file_name;
 729                 setup_file_name.truncate(setup_file_name.lastIndexOf('.'));
 730                 setup_file_name.append(".pvs");
 731         }
 732
 733         if (QFileInfo::exists(setup_file_name) && QFileInfo(setup_file_name).isReadable()) {
 734                 QSettings settings_storage(setup_file_name, QSettings::IniFormat);
 735                 restore_setup(settings_storage);
 736         }
 737
 738         main_bar_->update_device_list();
 739
 740         start_capture([&, errorMessage](QString infoMessage) {
 741                 MainWindow::show_session_error(errorMessage, infoMessage); });
 742
 743         // Only set save path if we loaded an srzip file
 744         if (dynamic_pointer_cast<devices::SessionFile>(device_))
 745                 set_save_path(QFileInfo(file_name).absolutePath());
 746
 747         set_name(QFileInfo(file_name).fileName());
 748 }
 749
 750 Session::capture_state Session::get_capture_state() const
 751 {
 752         lock_guard<mutex> lock(sampling_mutex_);
 753         return capture_state_;
 754 }
 755
 756 void Session::start_capture(function<void (const QString)> error_handler)
 757 {
 758         if (!device_) {
 759                 error_handler(tr("No active device set, can't start acquisition."));
 760                 return;
 761         }
 762
 763         stop_capture();
 764
 765         // Check that at least one channel is enabled
 766         const shared_ptr<sigrok::Device> sr_dev = device_->device();
 767         if (sr_dev) {
 768                 const auto channels = sr_dev->channels();
 769                 if (!any_of(channels.begin(), channels.end(),
 770                         [](shared_ptr<Channel> channel) {
 771                                 return channel->enabled(); })) {
 772                         error_handler(tr("No channels enabled."));
 773                         return;
 774                 }
 775         }
 776
 777         // Clear signal data
 778         for (const shared_ptr<data::SignalData>& d : all_signal_data_)
 779                 d->clear();
 780
 781         trigger_list_.clear();
 782
 783         // Revert name back to default name (e.g. "Session 1") for real devices
 784         // as the (possibly saved) data is gone. File devices keep their name.
 785         shared_ptr<devices::HardwareDevice> hw_device =
 786                 dynamic_pointer_cast< devices::HardwareDevice >(device_);
 787
 788         if (hw_device) {
 789                 name_ = default_name_;
 790                 name_changed();
 791         }
 792
 793         // Begin the session
 794         sampling_thread_ = std::thread(
 795                 &Session::sample_thread_proc, this, error_handler);
 796 }
 797
 798 void Session::stop_capture()
 799 {
 800         if (get_capture_state() != Stopped)
 801                 device_->stop();
 802
 803         // Check that sampling stopped
 804         if (sampling_thread_.joinable())
 805                 sampling_thread_.join();
 806 }
 807
 808 void Session::register_view(shared_ptr<views::ViewBase> view)
 809 {
 810         if (views_.empty())
 811                 main_view_ = view;
 812
 813         views_.push_back(view);
 814
 815         // Add all device signals
 816         update_signals();
 817
 818         // Add all other signals
 819         vector< shared_ptr<data::SignalBase> > view_signalbases = view->signalbases();
 820
 821         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
 822                 const int sb_exists = count_if(
 823                         view_signalbases.cbegin(), view_signalbases.cend(),
 824                         [&](const shared_ptr<data::SignalBase> &sb) {
 825                                 return sb == signalbase;
 826                         });
 827
 828                 // Add the signal to the view if it doesn't have it yet
 829                 if (!sb_exists)
 830                         switch (signalbase->type()) {
 831                         case data::SignalBase::AnalogChannel:
 832                         case data::SignalBase::LogicChannel:
 833                         case data::SignalBase::MathChannel:
 834                                 view->add_signalbase(signalbase);
 835                                 break;
 836                         case data::SignalBase::DecodeChannel:
 837 #ifdef ENABLE_DECODE
 838                                 view->add_decode_signal(dynamic_pointer_cast<data::DecodeSignal>(signalbase));
 839 #endif
 840                                 break;
 841                         }
 842         }
 843
 844         signals_changed();
 845 }
 846
 847 void Session::deregister_view(shared_ptr<views::ViewBase> view)
 848 {
 849         views_.erase(std::remove_if(views_.begin(), views_.end(),
 850                 [&](shared_ptr<views::ViewBase> v) { return v == view; }),
 851                 views_.end());
 852
 853         if (views_.empty()) {
 854                 main_view_.reset();
 855
 856                 // Without a view there can be no main bar
 857                 main_bar_.reset();
 858         }
 859 }
 860
 861 bool Session::has_view(shared_ptr<views::ViewBase> view)
 862 {
 863         for (shared_ptr<views::ViewBase>& v : views_)
 864                 if (v == view)
 865                         return true;
 866
 867         return false;
 868 }
 869
 870 double Session::get_samplerate() const
 871 {
 872         double samplerate = 0.0;
 873
 874         for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
 875                 assert(d);
 876                 const vector< shared_ptr<pv::data::Segment> > segments =
 877                         d->segments();
 878                 for (const shared_ptr<pv::data::Segment>& s : segments)
 879                         samplerate = max(samplerate, s->samplerate());
 880         }
 881         // If there is no sample rate given we use samples as unit
 882         if (samplerate == 0.0)
 883                 samplerate = 1.0;
 884
 885         return samplerate;
 886 }
 887
 888 uint32_t Session::get_segment_count() const
 889 {
 890         uint32_t value = 0;
 891
 892         // Find the highest number of segments
 893         for (const shared_ptr<data::SignalData>& data : all_signal_data_)
 894                 if (data->get_segment_count() > value)
 895                         value = data->get_segment_count();
 896
 897         return value;
 898 }
 899
 900 vector<util::Timestamp> Session::get_triggers(uint32_t segment_id) const
 901 {
 902         vector<util::Timestamp> result;
 903
 904         for (const pair<uint32_t, util::Timestamp>& entry : trigger_list_)
 905                 if (entry.first == segment_id)
 906                         result.push_back(entry.second);
 907
 908         return result;
 909 }
 910
 911 const vector< shared_ptr<data::SignalBase> > Session::signalbases() const
 912 {
 913         return signalbases_;
 914 }
 915
 916 void Session::add_generated_signal(shared_ptr<data::SignalBase> signal)
 917 {
 918         signalbases_.push_back(signal);
 919
 920         for (shared_ptr<views::ViewBase>& view : views_)
 921                 view->add_signalbase(signal);
 922
 923         update_signals();
 924 }
 925
 926 void Session::remove_generated_signal(shared_ptr<data::SignalBase> signal)
 927 {
 928         if (shutting_down_)
 929                 return;
 930
 931         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
 932                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
 933                 signalbases_.end());
 934
 935         for (shared_ptr<views::ViewBase>& view : views_)
 936                 view->remove_signalbase(signal);
 937
 938         update_signals();
 939 }
 940
 941 #ifdef ENABLE_DECODE
 942 shared_ptr<data::DecodeSignal> Session::add_decode_signal()
 943 {
 944         shared_ptr<data::DecodeSignal> signal;
 945
 946         try {
 947                 // Create the decode signal
 948                 signal = make_shared<data::DecodeSignal>(*this);
 949
 950                 signalbases_.push_back(signal);
 951
 952                 // Add the decode signal to all views
 953                 for (shared_ptr<views::ViewBase>& view : views_)
 954                         view->add_decode_signal(signal);
 955         } catch (runtime_error& e) {
 956                 remove_decode_signal(signal);
 957                 return nullptr;
 958         }
 959
 960         signals_changed();
 961
 962         return signal;
 963 }
 964
 965 void Session::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 966 {
 967         if (shutting_down_)
 968                 return;
 969
 970         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
 971                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
 972                 signalbases_.end());
 973
 974         for (shared_ptr<views::ViewBase>& view : views_)
 975                 view->remove_decode_signal(signal);
 976
 977         signals_changed();
 978 }
 979 #endif
 980
 981 bool Session::all_segments_complete(uint32_t segment_id) const
 982 {
 983         bool all_complete = true;
 984
 985         for (const shared_ptr<data::SignalBase>& base : signalbases_)
 986                 if (!base->segment_is_complete(segment_id))
 987                         all_complete = false;
 988
 989         return all_complete;
 990 }
 991
 992 MetadataObjManager* Session::metadata_obj_manager()
 993 {
 994         return &metadata_obj_manager_;
 995 }
 996
 997 void Session::set_capture_state(capture_state state)
 998 {
 999         bool changed;
1000
1001         if (state == Running)
1002                 acq_time_.restart();
1003         if (state == Stopped)
1004                 qDebug("Acquisition took %.2f s", acq_time_.elapsed() / 1000.);
1005
1006         {
1007                 lock_guard<mutex> lock(sampling_mutex_);
1008                 changed = capture_state_ != state;
1009                 capture_state_ = state;
1010         }
1011
1012         if (changed)
1013                 capture_state_changed(state);
1014 }
1015
1016 void Session::update_signals()
1017 {
1018         if (!device_) {
1019                 signalbases_.clear();
1020                 logic_data_.reset();
1021                 for (shared_ptr<views::ViewBase>& view : views_) {
1022                         view->clear_signalbases();
1023 #ifdef ENABLE_DECODE
1024                         view->clear_decode_signals();
1025 #endif
1026                 }
1027                 return;
1028         }
1029
1030         lock_guard<recursive_mutex> lock(data_mutex_);
1031
1032         const shared_ptr<sigrok::Device> sr_dev = device_->device();
1033         if (!sr_dev) {
1034                 signalbases_.clear();
1035                 logic_data_.reset();
1036                 for (shared_ptr<views::ViewBase>& view : views_) {
1037                         view->clear_signalbases();
1038 #ifdef ENABLE_DECODE
1039                         view->clear_decode_signals();
1040 #endif
1041                 }
1042                 return;
1043         }
1044
1045         // Detect what data types we will receive
1046         auto channels = sr_dev->channels();
1047         unsigned int logic_channel_count = count_if(
1048                 channels.begin(), channels.end(),
1049                 [] (shared_ptr<Channel> channel) {
1050                         return channel->type() == sigrok::ChannelType::LOGIC; });
1051
1052         // Create a common data container for the logic signalbases
1053         {
1054                 lock_guard<recursive_mutex> data_lock(data_mutex_);
1055
1056                 if (logic_channel_count == 0) {
1057                         logic_data_.reset();
1058                 } else if (!logic_data_ ||
1059                         logic_data_->num_channels() != logic_channel_count) {
1060                         logic_data_.reset(new data::Logic(logic_channel_count));
1061                         assert(logic_data_);
1062                 }
1063         }
1064
1065         // Create signalbases if necessary
1066         for (auto channel : sr_dev->channels()) {
1067
1068                 // Try to find the channel in the list of existing signalbases
1069                 const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1070                         [&](const shared_ptr<SignalBase> &sb) { return sb->channel() == channel; });
1071
1072                 // Not found, let's make a signalbase for it
1073                 if (iter == signalbases_.cend()) {
1074                         shared_ptr<SignalBase> signalbase;
1075                         switch(channel->type()->id()) {
1076                         case SR_CHANNEL_LOGIC:
1077                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::LogicChannel);
1078                                 signalbases_.push_back(signalbase);
1079
1080                                 all_signal_data_.insert(logic_data_);
1081                                 signalbase->set_data(logic_data_);
1082
1083                                 connect(this, SIGNAL(capture_state_changed(int)),
1084                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1085                                 break;
1086
1087                         case SR_CHANNEL_ANALOG:
1088                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::AnalogChannel);
1089                                 signalbases_.push_back(signalbase);
1090
1091                                 shared_ptr<data::Analog> data(new data::Analog());
1092                                 all_signal_data_.insert(data);
1093                                 signalbase->set_data(data);
1094
1095                                 connect(this, SIGNAL(capture_state_changed(int)),
1096                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1097                                 break;
1098                         }
1099                 }
1100         }
1101
1102         // Create and assign default signal groups if needed
1103         if (signal_groups_.empty()) {
1104                 for (auto& entry : sr_dev->channel_groups()) {
1105                         const shared_ptr<sigrok::ChannelGroup>& group = entry.second;
1106
1107                         if (group->channels().size() <= 1)
1108                                 continue;
1109
1110                         SignalGroup* sg = new SignalGroup(QString::fromStdString(entry.first));
1111                         for (const shared_ptr<sigrok::Channel>& channel : group->channels()) {
1112                                 for (shared_ptr<data::SignalBase> s : signalbases_) {
1113                                         if (s->channel() == channel) {
1114                                                 sg->append_signal(s);
1115                                                 break;
1116                                         }
1117                                 }
1118                         }
1119                         signal_groups_.emplace_back(sg);
1120                 }
1121         }
1122
1123         // Update all views
1124         for (shared_ptr<views::ViewBase>& viewbase : views_) {
1125                 vector< shared_ptr<SignalBase> > view_signalbases =
1126                                 viewbase->signalbases();
1127
1128                 // Add all non-decode signalbases that don't yet exist in the view
1129                 for (shared_ptr<SignalBase>& session_sb : signalbases_) {
1130                         if (session_sb->type() == SignalBase::DecodeChannel)
1131                                 continue;
1132
1133                         const auto iter = find_if(view_signalbases.cbegin(), view_signalbases.cend(),
1134                                 [&](const shared_ptr<SignalBase> &sb) { return sb == session_sb; });
1135
1136                         if (iter == view_signalbases.cend())
1137                                 viewbase->add_signalbase(session_sb);
1138                 }
1139
1140                 // Remove all non-decode signalbases that no longer exist
1141                 for (shared_ptr<SignalBase>& view_sb : view_signalbases) {
1142                         if (view_sb->type() == SignalBase::DecodeChannel)
1143                                 continue;
1144
1145                         const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1146                                 [&](const shared_ptr<SignalBase> &sb) { return sb == view_sb; });
1147
1148                         if (iter == signalbases_.cend())
1149                                 viewbase->remove_signalbase(view_sb);
1150                 }
1151         }
1152
1153         signals_changed();
1154 }
1155
1156 shared_ptr<data::SignalBase> Session::signalbase_from_channel(
1157         shared_ptr<sigrok::Channel> channel) const
1158 {
1159         for (shared_ptr<data::SignalBase> sig : signalbases_) {
1160                 assert(sig);
1161                 if (sig->channel() == channel)
1162                         return sig;
1163         }
1164         return shared_ptr<data::SignalBase>();
1165 }
1166
1167 void Session::sample_thread_proc(function<void (const QString)> error_handler)
1168 {
1169         assert(error_handler);
1170
1171 #ifdef ENABLE_FLOW
1172         pipeline_ = Pipeline::create();
1173
1174         source_ = ElementFactory::create_element("filesrc", "source");
1175         sink_ = RefPtr<AppSink>::cast_dynamic(ElementFactory::create_element("appsink", "sink"));
1176
1177         pipeline_->add(source_)->add(sink_);
1178         source_->link(sink_);
1179
1180         source_->set_property("location", Glib::ustring("/tmp/dummy_binary"));
1181
1182         sink_->set_property("emit-signals", TRUE);
1183         sink_->signal_new_sample().connect(sigc::mem_fun(*this, &Session::on_gst_new_sample));
1184
1185         // Get the bus from the pipeline and add a bus watch to the default main context
1186         RefPtr<Bus> bus = pipeline_->get_bus();
1187         bus->add_watch(sigc::mem_fun(this, &Session::on_gst_bus_message));
1188
1189         // Start pipeline and Wait until it finished processing
1190         pipeline_done_interrupt_ = false;
1191         pipeline_->set_state(Gst::STATE_PLAYING);
1192
1193         unique_lock<mutex> pipeline_done_lock_(pipeline_done_mutex_);
1194         pipeline_done_cond_.wait(pipeline_done_lock_);
1195
1196         // Let the pipeline free all resources
1197         pipeline_->set_state(Gst::STATE_NULL);
1198
1199 #else
1200         if (!device_)
1201                 return;
1202
1203         try {
1204                 cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1205         } catch (Error& e) {
1206                 cur_samplerate_ = 0;
1207         }
1208
1209         out_of_memory_ = false;
1210
1211         {
1212                 lock_guard<recursive_mutex> lock(data_mutex_);
1213                 cur_logic_segment_.reset();
1214                 cur_analog_segments_.clear();
1215                 for (shared_ptr<data::SignalBase> sb : signalbases_)
1216                         sb->clear_sample_data();
1217         }
1218         highest_segment_id_ = -1;
1219         frame_began_ = false;
1220
1221         try {
1222                 device_->start();
1223         } catch (Error& e) {
1224                 error_handler(e.what());
1225                 return;
1226         }
1227
1228         set_capture_state(device_->session()->trigger() ?
1229                 AwaitingTrigger : Running);
1230
1231         try {
1232                 device_->run();
1233         } catch (Error& e) {
1234                 error_handler(e.what());
1235                 set_capture_state(Stopped);
1236                 return;
1237         } catch (QString& e) {
1238                 error_handler(e);
1239                 set_capture_state(Stopped);
1240                 return;
1241         }
1242
1243         set_capture_state(Stopped);
1244
1245         // Confirm that SR_DF_END was received
1246         if (cur_logic_segment_)
1247                 qDebug() << "WARNING: SR_DF_END was not received.";
1248 #endif
1249
1250         // Optimize memory usage
1251         free_unused_memory();
1252
1253         // We now have unsaved data unless we just "captured" from a file
1254         shared_ptr<devices::File> file_device =
1255                 dynamic_pointer_cast<devices::File>(device_);
1256
1257         if (!file_device)
1258                 data_saved_ = false;
1259
1260         if (out_of_memory_)
1261                 error_handler(tr("Out of memory, acquisition stopped."));
1262 }
1263
1264 void Session::free_unused_memory()
1265 {
1266         for (const shared_ptr<data::SignalData>& data : all_signal_data_) {
1267                 const vector< shared_ptr<data::Segment> > segments = data->segments();
1268
1269                 for (const shared_ptr<data::Segment>& segment : segments)
1270                         segment->free_unused_memory();
1271         }
1272 }
1273
1274 void Session::signal_new_segment()
1275 {
1276         int new_segment_id = 0;
1277
1278         if ((cur_logic_segment_ != nullptr) || !cur_analog_segments_.empty()) {
1279
1280                 // Determine new frame/segment number, assuming that all
1281                 // signals have the same number of frames/segments
1282                 if (cur_logic_segment_) {
1283                         new_segment_id = logic_data_->get_segment_count() - 1;
1284                 } else {
1285                         shared_ptr<sigrok::Channel> any_channel =
1286                                 (*cur_analog_segments_.begin()).first;
1287
1288                         shared_ptr<data::SignalBase> base = signalbase_from_channel(any_channel);
1289                         assert(base);
1290
1291                         shared_ptr<data::Analog> data(base->analog_data());
1292                         assert(data);
1293
1294                         new_segment_id = data->get_segment_count() - 1;
1295                 }
1296         }
1297
1298         if (new_segment_id > highest_segment_id_) {
1299                 highest_segment_id_ = new_segment_id;
1300                 new_segment(highest_segment_id_);
1301         }
1302 }
1303
1304 void Session::signal_segment_completed()
1305 {
1306         int segment_id = 0;
1307
1308         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
1309                 // We only care about analog and logic channels, not derived ones
1310                 if (signalbase->type() == data::SignalBase::AnalogChannel) {
1311                         segment_id = signalbase->analog_data()->get_segment_count() - 1;
1312                         break;
1313                 }
1314
1315                 if (signalbase->type() == data::SignalBase::LogicChannel) {
1316                         segment_id = signalbase->logic_data()->get_segment_count() - 1;
1317                         break;
1318                 }
1319         }
1320
1321         if (segment_id >= 0)
1322                 segment_completed(segment_id);
1323 }
1324
1325 #ifdef ENABLE_FLOW
1326 bool Session::on_gst_bus_message(const Glib::RefPtr<Gst::Bus>& bus, const Glib::RefPtr<Gst::Message>& message)
1327 {
1328         (void)bus;
1329
1330         if ((message->get_source() == pipeline_) && \
1331                 ((message->get_message_type() == Gst::MESSAGE_EOS)))
1332                 pipeline_done_cond_.notify_one();
1333
1334         // TODO Also evaluate MESSAGE_STREAM_STATUS to receive error notifications
1335
1336         return true;
1337 }
1338
1339 Gst::FlowReturn Session::on_gst_new_sample()
1340 {
1341         RefPtr<Gst::Sample> sample = sink_->pull_sample();
1342         RefPtr<Gst::Buffer> buf = sample->get_buffer();
1343
1344         for (uint32_t block_id = 0; block_id < buf->n_memory(); block_id++) {
1345                 RefPtr<Gst::Memory> buf_mem = buf->get_memory(block_id);
1346                 Gst::MapInfo mapinfo;
1347                 buf_mem->map(mapinfo, Gst::MAP_READ);
1348
1349                 shared_ptr<sigrok::Packet> logic_packet =
1350                         sr_context->create_logic_packet(mapinfo.get_data(), buf->get_size(), 1);
1351
1352                 try {
1353                         feed_in_logic(dynamic_pointer_cast<sigrok::Logic>(logic_packet->payload()));
1354                 } catch (bad_alloc&) {
1355                         out_of_memory_ = true;
1356                         device_->stop();
1357                         buf_mem->unmap(mapinfo);
1358                         return Gst::FLOW_ERROR;
1359                 }
1360
1361                 buf_mem->unmap(mapinfo);
1362         }
1363
1364         return Gst::FLOW_OK;
1365 }
1366 #endif
1367
1368 void Session::feed_in_header()
1369 {
1370         // Nothing to do here for now
1371 }
1372
1373 void Session::feed_in_meta(shared_ptr<Meta> meta)
1374 {
1375         for (auto& entry : meta->config()) {
1376                 switch (entry.first->id()) {
1377                 case SR_CONF_SAMPLERATE:
1378                         cur_samplerate_ = g_variant_get_uint64(entry.second.gobj());
1379                         break;
1380                 default:
1381                         qDebug() << "Received meta data key" << entry.first->id() << ", ignoring.";
1382                         break;
1383                 }
1384         }
1385
1386         signals_changed();
1387 }
1388
1389 void Session::feed_in_trigger()
1390 {
1391         // The channel containing most samples should be most accurate
1392         uint64_t sample_count = 0;
1393
1394         {
1395                 for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
1396                         assert(d);
1397                         uint64_t temp_count = 0;
1398
1399                         const vector< shared_ptr<pv::data::Segment> > segments =
1400                                 d->segments();
1401                         for (const shared_ptr<pv::data::Segment> &s : segments)
1402                                 temp_count += s->get_sample_count();
1403
1404                         if (temp_count > sample_count)
1405                                 sample_count = temp_count;
1406                 }
1407         }
1408
1409         uint32_t segment_id = 0;  // Default segment when no frames are used
1410
1411         // If a frame began, we'd ideally be able to use the highest segment ID for
1412         // the trigger. However, as new segments are only created when logic or
1413         // analog data comes in, this doesn't work if the trigger appears right
1414         // after the beginning of the frame, before any sample data.
1415         // For this reason, we use highest segment ID + 1 if no sample data came in
1416         // yet and the highest segment ID otherwise.
1417         if (frame_began_) {
1418                 segment_id = highest_segment_id_;
1419                 if (!cur_logic_segment_ && (cur_analog_segments_.size() == 0))
1420                         segment_id++;
1421         }
1422
1423         // TODO Create timestamp from segment start time + segment's current sample count
1424         util::Timestamp timestamp = sample_count / get_samplerate();
1425         trigger_list_.emplace_back(segment_id, timestamp);
1426         trigger_event(segment_id, timestamp);
1427 }
1428
1429 void Session::feed_in_frame_begin()
1430 {
1431         frame_began_ = true;
1432 }
1433
1434 void Session::feed_in_frame_end()
1435 {
1436         if (!frame_began_)
1437                 return;
1438
1439         {
1440                 lock_guard<recursive_mutex> lock(data_mutex_);
1441
1442                 if (cur_logic_segment_)
1443                         cur_logic_segment_->set_complete();
1444
1445                 for (auto& entry : cur_analog_segments_) {
1446                         shared_ptr<data::AnalogSegment> segment = entry.second;
1447                         segment->set_complete();
1448                 }
1449
1450                 cur_logic_segment_.reset();
1451                 cur_analog_segments_.clear();
1452         }
1453
1454         frame_began_ = false;
1455
1456         signal_segment_completed();
1457 }
1458
1459 void Session::feed_in_logic(shared_ptr<sigrok::Logic> logic)
1460 {
1461         if (logic->data_length() == 0) {
1462                 qDebug() << "WARNING: Received logic packet with 0 samples.";
1463                 return;
1464         }
1465
1466         if (logic->unit_size() > 8)
1467                 throw QString(tr("Can't handle more than 64 logic channels."));
1468
1469         if (!cur_samplerate_)
1470                 try {
1471                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1472                 } catch (Error& e) {
1473                         // Do nothing
1474                 }
1475
1476         lock_guard<recursive_mutex> lock(data_mutex_);
1477
1478         if (!logic_data_) {
1479                 // The only reason logic_data_ would not have been created is
1480                 // if it was not possible to determine the signals when the
1481                 // device was created.
1482                 update_signals();
1483         }
1484
1485         if (!cur_logic_segment_) {
1486                 // This could be the first packet after a trigger
1487                 set_capture_state(Running);
1488
1489                 // Create a new data segment
1490                 cur_logic_segment_ = make_shared<data::LogicSegment>(
1491                         *logic_data_, logic_data_->get_segment_count(),
1492                         logic->unit_size(), cur_samplerate_);
1493                 logic_data_->push_segment(cur_logic_segment_);
1494
1495                 signal_new_segment();
1496         }
1497
1498         cur_logic_segment_->append_payload(logic);
1499
1500         data_received();
1501 }
1502
1503 void Session::feed_in_analog(shared_ptr<sigrok::Analog> analog)
1504 {
1505         if (analog->num_samples() == 0) {
1506                 qDebug() << "WARNING: Received analog packet with 0 samples.";
1507                 return;
1508         }
1509
1510         if (!cur_samplerate_)
1511                 try {
1512                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1513                 } catch (Error& e) {
1514                         // Do nothing
1515                 }
1516
1517         lock_guard<recursive_mutex> lock(data_mutex_);
1518
1519         const vector<shared_ptr<Channel>> channels = analog->channels();
1520         bool sweep_beginning = false;
1521
1522         unique_ptr<float[]> data(new float[analog->num_samples() * channels.size()]);
1523         analog->get_data_as_float(data.get());
1524
1525         if (signalbases_.empty())
1526                 update_signals();
1527
1528         float *channel_data = data.get();
1529         for (auto& channel : channels) {
1530                 shared_ptr<data::AnalogSegment> segment;
1531
1532                 // Try to get the segment of the channel
1533                 const map< shared_ptr<Channel>, shared_ptr<data::AnalogSegment> >::
1534                         iterator iter = cur_analog_segments_.find(channel);
1535                 if (iter != cur_analog_segments_.end())
1536                         segment = (*iter).second;
1537                 else {
1538                         // If no segment was found, this means we haven't
1539                         // created one yet. i.e. this is the first packet
1540                         // in the sweep containing this segment.
1541                         sweep_beginning = true;
1542
1543                         // Find the analog data associated with the channel
1544                         shared_ptr<data::SignalBase> base = signalbase_from_channel(channel);
1545                         assert(base);
1546
1547                         shared_ptr<data::Analog> data(base->analog_data());
1548                         assert(data);
1549
1550                         // Create a segment, keep it in the maps of channels
1551                         segment = make_shared<data::AnalogSegment>(
1552                                 *data, data->get_segment_count(), cur_samplerate_);
1553                         cur_analog_segments_[channel] = segment;
1554
1555                         // Push the segment into the analog data.
1556                         data->push_segment(segment);
1557
1558                         signal_new_segment();
1559                 }
1560
1561                 assert(segment);
1562
1563                 // Append the samples in the segment
1564                 segment->append_interleaved_samples(channel_data++, analog->num_samples(),
1565                         channels.size());
1566         }
1567
1568         if (sweep_beginning) {
1569                 // This could be the first packet after a trigger
1570                 set_capture_state(Running);
1571         }
1572
1573         data_received();
1574 }
1575
1576 void Session::data_feed_in(shared_ptr<sigrok::Device> device,
1577         shared_ptr<Packet> packet)
1578 {
1579         (void)device;
1580
1581         assert(device);
1582         assert(device == device_->device());
1583         assert(packet);
1584
1585         switch (packet->type()->id()) {
1586         case SR_DF_HEADER:
1587                 feed_in_header();
1588                 break;
1589
1590         case SR_DF_META:
1591                 feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload()));
1592                 break;
1593
1594         case SR_DF_TRIGGER:
1595                 feed_in_trigger();
1596                 break;
1597
1598         case SR_DF_LOGIC:
1599                 try {
1600                         feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
1601                 } catch (bad_alloc&) {
1602                         out_of_memory_ = true;
1603                         device_->stop();
1604                 }
1605                 break;
1606
1607         case SR_DF_ANALOG:
1608                 try {
1609                         feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
1610                 } catch (bad_alloc&) {
1611                         out_of_memory_ = true;
1612                         device_->stop();
1613                 }
1614                 break;
1615
1616         case SR_DF_FRAME_BEGIN:
1617                 feed_in_frame_begin();
1618                 break;
1619
1620         case SR_DF_FRAME_END:
1621                 feed_in_frame_end();
1622                 break;
1623
1624         case SR_DF_END:
1625                 // Strictly speaking, this is performed when a frame end marker was
1626                 // received, so there's no point doing this again. However, not all
1627                 // devices use frames, and for those devices, we need to do it here.
1628                 {
1629                         lock_guard<recursive_mutex> lock(data_mutex_);
1630
1631                         if (cur_logic_segment_)
1632                                 cur_logic_segment_->set_complete();
1633
1634                         for (auto& entry : cur_analog_segments_) {
1635                                 shared_ptr<data::AnalogSegment> segment = entry.second;
1636                                 segment->set_complete();
1637                         }
1638
1639                         cur_logic_segment_.reset();
1640                         cur_analog_segments_.clear();
1641                 }
1642                 break;
1643
1644         default:
1645                 break;
1646         }
1647 }
1648
1649 void Session::on_data_saved()
1650 {
1651         data_saved_ = true;
1652 }
1653
1654 #ifdef ENABLE_DECODE
1655 void Session::on_new_decoders_selected(vector<const srd_decoder*> decoders)
1656 {
1657         assert(decoders.size() > 0);
1658
1659         shared_ptr<data::DecodeSignal> signal = add_decode_signal();
1660
1661         if (signal)
1662                 for (unsigned int i = 0; i < decoders.size(); i++) {
1663                         const srd_decoder* d = decoders[i];
1664                         signal->stack_decoder(d, !(i < decoders.size() - 1));
1665                 }
1666 }
1667 #endif
1668
1669 } // namespace pv