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