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