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