pv/session.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012-14 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <cassert>
  21 #include <memory>
  22 #include <mutex>
  23 #include <stdexcept>
  24
  25 #include <sys/stat.h>
  26
  27 #include <QDebug>
  28 #include <QDir>
  29 #include <QFileInfo>
  30
  31 #include "devicemanager.hpp"
  32 #include "mainwindow.hpp"
  33 #include "session.hpp"
  34 #include "util.hpp"
  35
  36 #include "data/analog.hpp"
  37 #include "data/analogsegment.hpp"
  38 #include "data/decode/decoder.hpp"
  39 #include "data/logic.hpp"
  40 #include "data/logicsegment.hpp"
  41 #include "data/mathsignal.hpp"
  42 #include "data/signalbase.hpp"
  43
  44 #include "devices/hardwaredevice.hpp"
  45 #include "devices/inputfile.hpp"
  46 #include "devices/sessionfile.hpp"
  47
  48 #include "toolbars/mainbar.hpp"
  49
  50 #include "views/trace/analogsignal.hpp"
  51 #include "views/trace/decodetrace.hpp"
  52 #include "views/trace/logicsignal.hpp"
  53 #include "views/trace/signal.hpp"
  54 #include "views/trace/view.hpp"
  55
  56 #include <libsigrokcxx/libsigrokcxx.hpp>
  57
  58 #ifdef ENABLE_FLOW
  59 #include <gstreamermm.h>
  60 #include <libsigrokflow/libsigrokflow.hpp>
  61 #endif
  62
  63 #ifdef ENABLE_DECODE
  64 #include <libsigrokdecode/libsigrokdecode.h>
  65 #include "data/decodesignal.hpp"
  66 #endif
  67
  68 using std::bad_alloc;
  69 using std::dynamic_pointer_cast;
  70 using std::find_if;
  71 using std::function;
  72 using std::list;
  73 using std::lock_guard;
  74 using std::make_pair;
  75 using std::make_shared;
  76 using std::map;
  77 using std::max;
  78 using std::move;
  79 using std::mutex;
  80 using std::pair;
  81 using std::recursive_mutex;
  82 using std::runtime_error;
  83 using std::shared_ptr;
  84 using std::string;
  85 #ifdef ENABLE_FLOW
  86 using std::unique_lock;
  87 #endif
  88 using std::unique_ptr;
  89 using std::vector;
  90
  91 using sigrok::Analog;
  92 using sigrok::Channel;
  93 using sigrok::ConfigKey;
  94 using sigrok::DatafeedCallbackFunction;
  95 using sigrok::Error;
  96 using sigrok::InputFormat;
  97 using sigrok::Logic;
  98 using sigrok::Meta;
  99 using sigrok::Packet;
 100 using sigrok::Session;
 101
 102 using Glib::VariantBase;
 103
 104 #ifdef ENABLE_FLOW
 105 using Gst::Bus;
 106 using Gst::ElementFactory;
 107 using Gst::Pipeline;
 108 #endif
 109
 110 using pv::data::SignalGroup;
 111 using pv::util::Timestamp;
 112 using pv::views::trace::Signal;
 113 using pv::views::trace::AnalogSignal;
 114 using pv::views::trace::LogicSignal;
 115
 116 namespace pv {
 117
 118 shared_ptr<sigrok::Context> Session::sr_context;
 119
 120 Session::Session(DeviceManager &device_manager, QString name) :
 121         shutting_down_(false),
 122         device_manager_(device_manager),
 123         default_name_(name),
 124         name_(name),
 125         capture_state_(Stopped),
 126         cur_samplerate_(0),
 127         data_saved_(true)
 128 {
 129         // Use this name also for the QObject instance
 130         setObjectName(name_);
 131 }
 132
 133 Session::~Session()
 134 {
 135         shutting_down_ = true;
 136
 137         // Stop and join to the thread
 138         stop_capture();
 139
 140         for (SignalGroup* group : signal_groups_) {
 141                 group->clear();
 142                 delete group;
 143         }
 144 }
 145
 146 DeviceManager& Session::device_manager()
 147 {
 148         return device_manager_;
 149 }
 150
 151 const DeviceManager& Session::device_manager() const
 152 {
 153         return device_manager_;
 154 }
 155
 156 shared_ptr<sigrok::Session> Session::session() const
 157 {
 158         if (!device_)
 159                 return shared_ptr<sigrok::Session>();
 160         return device_->session();
 161 }
 162
 163 shared_ptr<devices::Device> Session::device() const
 164 {
 165         return device_;
 166 }
 167
 168 QString Session::name() const
 169 {
 170         return name_;
 171 }
 172
 173 void Session::set_name(QString name)
 174 {
 175         if (default_name_.isEmpty())
 176                 default_name_ = name;
 177
 178         name_ = name;
 179
 180         // Use this name also for the QObject instance
 181         setObjectName(name_);
 182
 183         name_changed();
 184 }
 185
 186 QString Session::save_path() const
 187 {
 188         return save_path_;
 189 }
 190
 191 void Session::set_save_path(QString path)
 192 {
 193         save_path_ = path;
 194 }
 195
 196 const vector< shared_ptr<views::ViewBase> > Session::views() const
 197 {
 198         return views_;
 199 }
 200
 201 shared_ptr<views::ViewBase> Session::main_view() const
 202 {
 203         return main_view_;
 204 }
 205
 206 void Session::set_main_bar(shared_ptr<pv::toolbars::MainBar> main_bar)
 207 {
 208         main_bar_ = main_bar;
 209 }
 210
 211 shared_ptr<pv::toolbars::MainBar> Session::main_bar() const
 212 {
 213         return main_bar_;
 214 }
 215
 216 bool Session::data_saved() const
 217 {
 218         return data_saved_;
 219 }
 220
 221 void Session::save_setup(QSettings &settings) const
 222 {
 223         int i;
 224         int decode_signal_count = 0;
 225         int gen_signal_count = 0;
 226
 227         // Save channels and decoders
 228         for (const shared_ptr<data::SignalBase>& base : signalbases_) {
 229 #ifdef ENABLE_DECODE
 230                 if (base->is_decode_signal()) {
 231                         settings.beginGroup("decode_signal" + QString::number(decode_signal_count++));
 232                         base->save_settings(settings);
 233                         settings.endGroup();
 234                 } else
 235 #endif
 236                 if (base->is_generated()) {
 237                         settings.beginGroup("generated_signal" + QString::number(gen_signal_count++));
 238                         settings.setValue("type", base->type());
 239                         base->save_settings(settings);
 240                         settings.endGroup();
 241                 } else {
 242                         settings.beginGroup(base->internal_name());
 243                         base->save_settings(settings);
 244                         settings.endGroup();
 245                 }
 246         }
 247
 248         settings.setValue("decode_signals", decode_signal_count);
 249         settings.setValue("generated_signals", gen_signal_count);
 250
 251         // Save view states and their signal settings
 252         // Note: main_view must be saved as view0
 253         i = 0;
 254         settings.beginGroup("view" + QString::number(i++));
 255         main_view_->save_settings(settings);
 256         settings.endGroup();
 257
 258         for (const shared_ptr<views::ViewBase>& view : views_) {
 259                 if (view != main_view_) {
 260                         settings.beginGroup("view" + QString::number(i++));
 261                         settings.setValue("type", view->get_type());
 262                         view->save_settings(settings);
 263                         settings.endGroup();
 264                 }
 265         }
 266
 267         settings.setValue("views", i);
 268
 269         int view_id = 0;
 270         i = 0;
 271         for (const shared_ptr<views::ViewBase>& vb : views_) {
 272                 shared_ptr<views::trace::View> tv = dynamic_pointer_cast<views::trace::View>(vb);
 273                 if (tv) {
 274                         for (const shared_ptr<views::trace::TimeItem>& time_item : tv->time_items()) {
 275
 276                                 const shared_ptr<views::trace::Flag> flag =
 277                                         dynamic_pointer_cast<views::trace::Flag>(time_item);
 278                                 if (flag) {
 279                                         if (!flag->enabled())
 280                                                 continue;
 281
 282                                         settings.beginGroup("meta_obj" + QString::number(i++));
 283                                         settings.setValue("type", "time_marker");
 284                                         settings.setValue("assoc_view", view_id);
 285                                         GlobalSettings::store_timestamp(settings, "time", flag->time());
 286                                         settings.setValue("text", flag->get_text());
 287                                         settings.endGroup();
 288                                 }
 289                         }
 290
 291                         if (tv->cursors_shown()) {
 292                                 settings.beginGroup("meta_obj" + QString::number(i++));
 293                                 settings.setValue("type", "selection");
 294                                 settings.setValue("assoc_view", view_id);
 295                                 const shared_ptr<views::trace::CursorPair> cp = tv->cursors();
 296                                 GlobalSettings::store_timestamp(settings, "start_time", cp->first()->time());
 297                                 GlobalSettings::store_timestamp(settings, "end_time", cp->second()->time());
 298                                 settings.endGroup();
 299                         }
 300                 }
 301
 302                 view_id++;
 303         }
 304
 305         settings.setValue("meta_objs", i);
 306 }
 307
 308 void Session::save_settings(QSettings &settings) const
 309 {
 310         map<string, string> dev_info;
 311         list<string> key_list;
 312
 313         if (device_) {
 314                 shared_ptr<devices::HardwareDevice> hw_device =
 315                         dynamic_pointer_cast< devices::HardwareDevice >(device_);
 316
 317                 if (hw_device) {
 318                         settings.setValue("device_type", "hardware");
 319                         settings.beginGroup("device");
 320
 321                         key_list.emplace_back("vendor");
 322                         key_list.emplace_back("model");
 323                         key_list.emplace_back("version");
 324                         key_list.emplace_back("serial_num");
 325                         key_list.emplace_back("connection_id");
 326
 327                         dev_info = device_manager_.get_device_info(device_);
 328
 329                         for (string& key : key_list) {
 330                                 if (dev_info.count(key))
 331                                         settings.setValue(QString::fromUtf8(key.c_str()),
 332                                                         QString::fromUtf8(dev_info.at(key).c_str()));
 333                                 else
 334                                         settings.remove(QString::fromUtf8(key.c_str()));
 335                         }
 336
 337                         settings.endGroup();
 338                 }
 339
 340                 // Having saved the data to srzip overrides the current device. This is
 341                 // a crappy hack around the fact that saving e.g. an imported file to
 342                 // srzip would require changing the underlying libsigrok device
 343                 if (!save_path_.isEmpty()) {
 344                         QFileInfo fi = QFileInfo(QDir(save_path_), name_);
 345                         settings.setValue("device_type", "sessionfile");
 346                         settings.beginGroup("device");
 347                         settings.setValue("filename", fi.absoluteFilePath());
 348                         settings.endGroup();
 349                 } else {
 350                         shared_ptr<devices::SessionFile> sessionfile_device =
 351                                 dynamic_pointer_cast<devices::SessionFile>(device_);
 352
 353                         if (sessionfile_device) {
 354                                 settings.setValue("device_type", "sessionfile");
 355                                 settings.beginGroup("device");
 356                                 settings.setValue("filename", QString::fromStdString(
 357                                         sessionfile_device->full_name()));
 358                                 settings.endGroup();
 359                         }
 360
 361                         shared_ptr<devices::InputFile> inputfile_device =
 362                                 dynamic_pointer_cast<devices::InputFile>(device_);
 363
 364                         if (inputfile_device) {
 365                                 settings.setValue("device_type", "inputfile");
 366                                 settings.beginGroup("device");
 367                                 inputfile_device->save_meta_to_settings(settings);
 368                                 settings.endGroup();
 369                         }
 370                 }
 371
 372                 save_setup(settings);
 373         }
 374 }
 375
 376 void Session::restore_setup(QSettings &settings)
 377 {
 378         // Restore channels
 379         for (shared_ptr<data::SignalBase> base : signalbases_) {
 380                 settings.beginGroup(base->internal_name());
 381                 base->restore_settings(settings);
 382                 settings.endGroup();
 383         }
 384
 385         // Restore generated signals
 386         int gen_signal_count = settings.value("generated_signals").toInt();
 387
 388         for (int i = 0; i < gen_signal_count; i++) {
 389                 settings.beginGroup("generated_signal" + QString::number(i));
 390                 SignalBase::ChannelType type = (SignalBase::ChannelType)settings.value("type").toInt();
 391                 shared_ptr<data::SignalBase> signal;
 392
 393                 if (type == SignalBase::MathChannel)
 394                         signal = make_shared<data::MathSignal>(*this);
 395                 else
 396                         qWarning() << tr("Can't restore generated signal of unknown type %1 (%2)") \
 397                                 .arg((int)type) \
 398                                 .arg(settings.value("name").toString());
 399
 400                 if (signal) {
 401                         add_generated_signal(signal);
 402                         signal->restore_settings(settings);
 403                 }
 404
 405                 settings.endGroup();
 406         }
 407
 408         // Restore decoders
 409 #ifdef ENABLE_DECODE
 410         int decode_signal_count = settings.value("decode_signals").toInt();
 411
 412         for (int i = 0; i < decode_signal_count; i++) {
 413                 settings.beginGroup("decode_signal" + QString::number(i));
 414                 shared_ptr<data::DecodeSignal> signal = add_decode_signal();
 415                 signal->restore_settings(settings);
 416                 settings.endGroup();
 417         }
 418 #endif
 419
 420         // Restore views
 421         int views = settings.value("views").toInt();
 422
 423         for (int i = 0; i < views; i++) {
 424                 settings.beginGroup("view" + QString::number(i));
 425
 426                 if (i > 0) {
 427                         views::ViewType type = (views::ViewType)settings.value("type").toInt();
 428                         add_view(type, this);
 429                         views_.back()->restore_settings(settings);
 430                 } else
 431                         main_view_->restore_settings(settings);
 432
 433                 settings.endGroup();
 434         }
 435
 436         // Restore meta objects like markers and cursors
 437         int meta_objs = settings.value("meta_objs").toInt();
 438
 439         for (int i = 0; i < meta_objs; i++) {
 440                 settings.beginGroup("meta_obj" + QString::number(i));
 441
 442                 shared_ptr<views::ViewBase> vb;
 443                 shared_ptr<views::trace::View> tv;
 444                 if (settings.contains("assoc_view"))
 445                         vb = views_.at(settings.value("assoc_view").toInt());
 446
 447                 if (vb)
 448                         tv = dynamic_pointer_cast<views::trace::View>(vb);
 449
 450                 const QString type = settings.value("type").toString();
 451
 452                 if ((type == "time_marker") && tv) {
 453                         Timestamp ts = GlobalSettings::restore_timestamp(settings, "time");
 454                         shared_ptr<views::trace::Flag> flag = tv->add_flag(ts);
 455                         flag->set_text(settings.value("text").toString());
 456                 }
 457
 458                 if ((type == "selection") && tv) {
 459                         Timestamp start = GlobalSettings::restore_timestamp(settings, "start_time");
 460                         Timestamp end = GlobalSettings::restore_timestamp(settings, "end_time");
 461                         tv->set_cursors(start, end);
 462                         tv->show_cursors();
 463                 }
 464
 465                 settings.endGroup();
 466         }
 467 }
 468
 469 void Session::restore_settings(QSettings &settings)
 470 {
 471         shared_ptr<devices::Device> device;
 472
 473         const QString device_type = settings.value("device_type").toString();
 474
 475         if (device_type == "hardware") {
 476                 map<string, string> dev_info;
 477                 list<string> key_list;
 478
 479                 // Re-select last used device if possible but only if it's not demo
 480                 settings.beginGroup("device");
 481                 key_list.emplace_back("vendor");
 482                 key_list.emplace_back("model");
 483                 key_list.emplace_back("version");
 484                 key_list.emplace_back("serial_num");
 485                 key_list.emplace_back("connection_id");
 486
 487                 for (string key : key_list) {
 488                         const QString k = QString::fromStdString(key);
 489                         if (!settings.contains(k))
 490                                 continue;
 491
 492                         const string value = settings.value(k).toString().toStdString();
 493                         if (!value.empty())
 494                                 dev_info.insert(make_pair(key, value));
 495                 }
 496
 497                 if (dev_info.count("model") > 0)
 498                         device = device_manager_.find_device_from_info(dev_info);
 499
 500                 if (device)
 501                         set_device(device);
 502
 503                 settings.endGroup();
 504
 505                 if (device)
 506                         restore_setup(settings);
 507         }
 508
 509         QString filename;
 510         if ((device_type == "sessionfile") || (device_type == "inputfile")) {
 511                 if (device_type == "sessionfile") {
 512                         settings.beginGroup("device");
 513                         filename = settings.value("filename").toString();
 514                         settings.endGroup();
 515
 516                         if (QFileInfo(filename).isReadable())
 517                                 device = make_shared<devices::SessionFile>(device_manager_.context(),
 518                                         filename.toStdString());
 519                 }
 520
 521                 if (device_type == "inputfile") {
 522                         settings.beginGroup("device");
 523                         device = make_shared<devices::InputFile>(device_manager_.context(),
 524                                 settings);
 525                         settings.endGroup();
 526                 }
 527
 528
 529                 if (device) {
 530                         set_device(device);
 531                         restore_setup(settings);
 532
 533                         start_capture([](QString infoMessage) {
 534                                 // TODO Emulate noquote()
 535                                 qDebug() << "Session error:" << infoMessage; });
 536
 537                         set_name(QString::fromStdString(
 538                                 dynamic_pointer_cast<devices::File>(device)->display_name(device_manager_)));
 539
 540                         if (!filename.isEmpty()) {
 541                                 // Only set the save path if we load an srzip file
 542                                 if (device_type == "sessionfile")
 543                                         set_save_path(QFileInfo(filename).absolutePath());
 544
 545                                 set_name(QFileInfo(filename).fileName());
 546                         }
 547                 }
 548         }
 549 }
 550
 551 void Session::select_device(shared_ptr<devices::Device> device)
 552 {
 553         try {
 554                 if (device)
 555                         set_device(device);
 556                 else
 557                         set_default_device();
 558         } catch (const QString &e) {
 559                 MainWindow::show_session_error(tr("Failed to select device"), e);
 560         }
 561 }
 562
 563 void Session::set_device(shared_ptr<devices::Device> device)
 564 {
 565         assert(device);
 566
 567         // Ensure we are not capturing before setting the device
 568         stop_capture();
 569
 570         if (device_)
 571                 device_->close();
 572
 573         device_.reset();
 574
 575         // Revert name back to default name (e.g. "Session 1") as the data is gone
 576         name_ = default_name_;
 577         name_changed();
 578
 579         // Remove all stored data and reset all views
 580         for (shared_ptr<views::ViewBase> view : views_) {
 581                 view->clear_signalbases();
 582 #ifdef ENABLE_DECODE
 583                 view->clear_decode_signals();
 584 #endif
 585                 view->reset_view_state();
 586         }
 587
 588         for (SignalGroup* group : signal_groups_) {
 589                 group->clear();
 590                 delete group;
 591         }
 592         signal_groups_.clear();
 593
 594         for (const shared_ptr<data::SignalData>& d : all_signal_data_)
 595                 d->clear();
 596
 597         all_signal_data_.clear();
 598         signalbases_.clear();
 599         cur_logic_segment_.reset();
 600
 601         for (auto& entry : cur_analog_segments_) {
 602                 shared_ptr<sigrok::Channel>(entry.first).reset();
 603                 shared_ptr<data::AnalogSegment>(entry.second).reset();
 604         }
 605
 606         logic_data_.reset();
 607
 608         signals_changed();
 609
 610         device_ = move(device);
 611
 612         try {
 613                 device_->open();
 614         } catch (const QString &e) {
 615                 device_.reset();
 616                 MainWindow::show_session_error(tr("Failed to open device"), e);
 617         }
 618
 619         if (device_) {
 620                 device_->session()->add_datafeed_callback([=]
 621                         (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) {
 622                                 data_feed_in(device, packet);
 623                         });
 624
 625                 update_signals();
 626         }
 627
 628         device_changed();
 629 }
 630
 631 void Session::set_default_device()
 632 {
 633         const list< shared_ptr<devices::HardwareDevice> > &devices =
 634                 device_manager_.devices();
 635
 636         if (devices.empty())
 637                 return;
 638
 639         // Try and find the demo device and select that by default
 640         const auto iter = find_if(devices.begin(), devices.end(),
 641                 [] (const shared_ptr<devices::HardwareDevice> &d) {
 642                         return d->hardware_device()->driver()->name() == "demo"; });
 643         set_device((iter == devices.end()) ? devices.front() : *iter);
 644 }
 645
 646 bool Session::using_file_device() const
 647 {
 648         shared_ptr<devices::SessionFile> sessionfile_device =
 649                 dynamic_pointer_cast<devices::SessionFile>(device_);
 650
 651         shared_ptr<devices::InputFile> inputfile_device =
 652                 dynamic_pointer_cast<devices::InputFile>(device_);
 653
 654         return (sessionfile_device || inputfile_device);
 655 }
 656
 657 /**
 658  * Convert generic options to data types that are specific to InputFormat.
 659  *
 660  * @param[in] user_spec Vector of tokenized words, string format.
 661  * @param[in] fmt_opts Input format's options, result of InputFormat::options().
 662  *
 663  * @return Map of options suitable for InputFormat::create_input().
 664  */
 665 map<string, Glib::VariantBase>
 666 Session::input_format_options(vector<string> user_spec,
 667                 map<string, shared_ptr<Option>> fmt_opts)
 668 {
 669         map<string, Glib::VariantBase> result;
 670
 671         for (auto& entry : user_spec) {
 672                 /*
 673                  * Split key=value specs. Accept entries without separator
 674                  * (for simplified boolean specifications).
 675                  */
 676                 string key, val;
 677                 size_t pos = entry.find("=");
 678                 if (pos == std::string::npos) {
 679                         key = entry;
 680                         val = "";
 681                 } else {
 682                         key = entry.substr(0, pos);
 683                         val = entry.substr(pos + 1);
 684                 }
 685
 686                 /*
 687                  * Skip user specifications that are not a member of the
 688                  * format's set of supported options. Have the text input
 689                  * spec converted to the required input format specific
 690                  * data type.
 691                  */
 692                 auto found = fmt_opts.find(key);
 693                 if (found == fmt_opts.end()) {
 694                         qCritical() << "Supplied input option" << QString::fromStdString(key) <<
 695                                 "is not a valid option for this input module, it will be ignored!";
 696                         continue;
 697                 }
 698
 699                 shared_ptr<Option> opt = found->second;
 700                 result[key] = opt->parse_string(val);
 701         }
 702
 703         return result;
 704 }
 705
 706 void Session::load_init_file(const string &file_name,
 707         const string &format, const string &setup_file_name)
 708 {
 709         shared_ptr<InputFormat> input_format;
 710         map<string, Glib::VariantBase> input_opts;
 711
 712         if (!format.empty()) {
 713                 const map<string, shared_ptr<InputFormat> > formats =
 714                         device_manager_.context()->input_formats();
 715                 auto user_opts = pv::util::split_string(format, ":");
 716                 string user_name = user_opts.front();
 717                 user_opts.erase(user_opts.begin());
 718                 const auto iter = find_if(formats.begin(), formats.end(),
 719                         [&](const pair<string, shared_ptr<InputFormat> > f) {
 720                                 return f.first == user_name; });
 721                 if (iter == formats.end()) {
 722                         MainWindow::show_session_error(tr("Error"),
 723                                 tr("Unexpected input format: %1").arg(QString::fromStdString(format)));
 724                         return;
 725                 }
 726                 input_format = (*iter).second;
 727                 input_opts = input_format_options(user_opts,
 728                         input_format->options());
 729         }
 730
 731         load_file(QString::fromStdString(file_name), QString::fromStdString(setup_file_name),
 732                 input_format, input_opts);
 733 }
 734
 735 void Session::load_file(QString file_name, QString setup_file_name,
 736         shared_ptr<sigrok::InputFormat> format, const map<string, Glib::VariantBase> &options)
 737 {
 738         const QString errorMessage(
 739                 QString("Failed to load file %1").arg(file_name));
 740
 741         // In the absence of a caller's format spec, try to auto detect.
 742         // Assume "sigrok session file" upon lookup miss.
 743         if (!format)
 744                 format = device_manager_.context()->input_format_match(file_name.toStdString());
 745         try {
 746                 if (format)
 747                         set_device(shared_ptr<devices::Device>(
 748                                 new devices::InputFile(
 749                                         device_manager_.context(),
 750                                         file_name.toStdString(),
 751                                         format, options)));
 752                 else
 753                         set_device(shared_ptr<devices::Device>(
 754                                 new devices::SessionFile(
 755                                         device_manager_.context(),
 756                                         file_name.toStdString())));
 757         } catch (Error& e) {
 758                 MainWindow::show_session_error(tr("Failed to load %1").arg(file_name), e.what());
 759                 set_default_device();
 760                 main_bar_->update_device_list();
 761                 return;
 762         }
 763
 764         // Use the input file with .pvs extension if no setup file was given
 765         if (setup_file_name.isEmpty()) {
 766                 setup_file_name = file_name;
 767                 setup_file_name.truncate(setup_file_name.lastIndexOf('.'));
 768                 setup_file_name.append(".pvs");
 769         }
 770
 771         if (QFileInfo::exists(setup_file_name) && QFileInfo(setup_file_name).isReadable()) {
 772                 QSettings settings_storage(setup_file_name, QSettings::IniFormat);
 773                 restore_setup(settings_storage);
 774         }
 775
 776         main_bar_->update_device_list();
 777
 778         start_capture([&, errorMessage](QString infoMessage) {
 779                 MainWindow::show_session_error(errorMessage, infoMessage); });
 780
 781         // Only set save path if we loaded an srzip file
 782         if (dynamic_pointer_cast<devices::SessionFile>(device_))
 783                 set_save_path(QFileInfo(file_name).absolutePath());
 784
 785         set_name(QFileInfo(file_name).fileName());
 786 }
 787
 788 Session::capture_state Session::get_capture_state() const
 789 {
 790         lock_guard<mutex> lock(sampling_mutex_);
 791         return capture_state_;
 792 }
 793
 794 void Session::start_capture(function<void (const QString)> error_handler)
 795 {
 796         if (!device_) {
 797                 error_handler(tr("No active device set, can't start acquisition."));
 798                 return;
 799         }
 800
 801         stop_capture();
 802
 803         // Check that at least one channel is enabled
 804         const shared_ptr<sigrok::Device> sr_dev = device_->device();
 805         if (sr_dev) {
 806                 const auto channels = sr_dev->channels();
 807                 if (!any_of(channels.begin(), channels.end(),
 808                         [](shared_ptr<Channel> channel) {
 809                                 return channel->enabled(); })) {
 810                         error_handler(tr("No channels enabled."));
 811                         return;
 812                 }
 813         }
 814
 815         // Clear signal data
 816         for (const shared_ptr<data::SignalData>& d : all_signal_data_)
 817                 d->clear();
 818
 819         trigger_list_.clear();
 820         segment_sample_count_.clear();
 821
 822         // Revert name back to default name (e.g. "Session 1") for real devices
 823         // as the (possibly saved) data is gone. File devices keep their name.
 824         shared_ptr<devices::HardwareDevice> hw_device =
 825                 dynamic_pointer_cast< devices::HardwareDevice >(device_);
 826
 827         if (hw_device) {
 828                 name_ = default_name_;
 829                 name_changed();
 830         }
 831
 832         // Begin the session
 833         sampling_thread_ = std::thread(&Session::sample_thread_proc, this, error_handler);
 834 }
 835
 836 void Session::stop_capture()
 837 {
 838         if (get_capture_state() != Stopped)
 839                 device_->stop();
 840
 841         // Check that sampling stopped
 842         if (sampling_thread_.joinable())
 843                 sampling_thread_.join();
 844 }
 845
 846 void Session::register_view(shared_ptr<views::ViewBase> view)
 847 {
 848         if (views_.empty())
 849                 main_view_ = view;
 850
 851         views_.push_back(view);
 852
 853         // Add all device signals
 854         update_signals();
 855
 856         // Add all other signals
 857         vector< shared_ptr<data::SignalBase> > view_signalbases = view->signalbases();
 858
 859         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
 860                 const int sb_exists = count_if(
 861                         view_signalbases.cbegin(), view_signalbases.cend(),
 862                         [&](const shared_ptr<data::SignalBase> &sb) {
 863                                 return sb == signalbase;
 864                         });
 865
 866                 // Add the signal to the view if it doesn't have it yet
 867                 if (!sb_exists)
 868                         switch (signalbase->type()) {
 869                         case data::SignalBase::AnalogChannel:
 870                         case data::SignalBase::LogicChannel:
 871                         case data::SignalBase::MathChannel:
 872                                 view->add_signalbase(signalbase);
 873                                 break;
 874                         case data::SignalBase::DecodeChannel:
 875 #ifdef ENABLE_DECODE
 876                                 view->add_decode_signal(dynamic_pointer_cast<data::DecodeSignal>(signalbase));
 877 #endif
 878                                 break;
 879                         }
 880         }
 881
 882         signals_changed();
 883 }
 884
 885 void Session::deregister_view(shared_ptr<views::ViewBase> view)
 886 {
 887         views_.erase(std::remove_if(views_.begin(), views_.end(),
 888                 [&](shared_ptr<views::ViewBase> v) { return v == view; }),
 889                 views_.end());
 890
 891         if (views_.empty()) {
 892                 main_view_.reset();
 893
 894                 // Without a view there can be no main bar
 895                 main_bar_.reset();
 896         }
 897 }
 898
 899 bool Session::has_view(shared_ptr<views::ViewBase> view)
 900 {
 901         for (shared_ptr<views::ViewBase>& v : views_)
 902                 if (v == view)
 903                         return true;
 904
 905         return false;
 906 }
 907
 908 double Session::get_samplerate() const
 909 {
 910         double samplerate = 0.0;
 911
 912         for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
 913                 assert(d);
 914                 const vector< shared_ptr<pv::data::Segment> > segments =
 915                         d->segments();
 916                 for (const shared_ptr<pv::data::Segment>& s : segments)
 917                         samplerate = max(samplerate, s->samplerate());
 918         }
 919         // If there is no sample rate given we use samples as unit
 920         if (samplerate == 0.0)
 921                 samplerate = 1.0;
 922
 923         return samplerate;
 924 }
 925
 926 uint32_t Session::get_highest_segment_id() const
 927 {
 928         return highest_segment_id_;
 929 }
 930
 931 uint64_t Session::get_segment_sample_count(uint32_t segment_id) const
 932 {
 933         if (segment_id < segment_sample_count_.size())
 934                 return segment_sample_count_[segment_id];
 935         else
 936                 return 0;
 937 }
 938
 939 vector<util::Timestamp> Session::get_triggers(uint32_t segment_id) const
 940 {
 941         vector<util::Timestamp> result;
 942
 943         for (const pair<uint32_t, util::Timestamp>& entry : trigger_list_)
 944                 if (entry.first == segment_id)
 945                         result.push_back(entry.second);
 946
 947         return result;
 948 }
 949
 950 const vector< shared_ptr<data::SignalBase> > Session::signalbases() const
 951 {
 952         return signalbases_;
 953 }
 954
 955 uint32_t Session::get_signal_count(data::SignalBase::ChannelType type) const
 956 {
 957         return count_if(signalbases_.begin(), signalbases_.end(),
 958                 [&] (shared_ptr<SignalBase> sb) { return sb->type() == type; });
 959 }
 960
 961 uint32_t Session::get_next_signal_index(data::SignalBase::ChannelType type)
 962 {
 963         next_index_list_[type]++;
 964         return next_index_list_[type];
 965 }
 966
 967 void Session::add_generated_signal(shared_ptr<data::SignalBase> signal)
 968 {
 969         signalbases_.push_back(signal);
 970
 971         for (shared_ptr<views::ViewBase>& view : views_)
 972                 view->add_signalbase(signal);
 973
 974         update_signals();
 975 }
 976
 977 void Session::remove_generated_signal(shared_ptr<data::SignalBase> signal)
 978 {
 979         if (shutting_down_)
 980                 return;
 981
 982         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
 983                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
 984                 signalbases_.end());
 985
 986         for (shared_ptr<views::ViewBase>& view : views_)
 987                 view->remove_signalbase(signal);
 988
 989         update_signals();
 990 }
 991
 992 #ifdef ENABLE_DECODE
 993 shared_ptr<data::DecodeSignal> Session::add_decode_signal()
 994 {
 995         shared_ptr<data::DecodeSignal> signal;
 996
 997         try {
 998                 // Create the decode signal
 999                 signal = make_shared<data::DecodeSignal>(*this);
1000
1001                 signalbases_.push_back(signal);
1002
1003                 // Add the decode signal to all views
1004                 for (shared_ptr<views::ViewBase>& view : views_)
1005                         view->add_decode_signal(signal);
1006         } catch (runtime_error& e) {
1007                 remove_decode_signal(signal);
1008                 return nullptr;
1009         }
1010
1011         signals_changed();
1012
1013         return signal;
1014 }
1015
1016 void Session::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
1017 {
1018         if (shutting_down_)
1019                 return;
1020
1021         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
1022                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
1023                 signalbases_.end());
1024
1025         for (shared_ptr<views::ViewBase>& view : views_)
1026                 view->remove_decode_signal(signal);
1027
1028         signals_changed();
1029 }
1030 #endif
1031
1032 bool Session::all_segments_complete(uint32_t segment_id) const
1033 {
1034         bool all_complete = true;
1035
1036         for (const shared_ptr<data::SignalBase>& base : signalbases_)
1037                 if (!base->segment_is_complete(segment_id))
1038                         all_complete = false;
1039
1040         return all_complete;
1041 }
1042
1043 MetadataObjManager* Session::metadata_obj_manager()
1044 {
1045         return &metadata_obj_manager_;
1046 }
1047
1048 void Session::set_capture_state(capture_state state)
1049 {
1050         if (state == capture_state_)
1051                 return;
1052
1053         if (state == Running)
1054                 acq_time_.restart();
1055         if (state == Stopped)
1056                 qDebug("Acquisition took %.2f s", acq_time_.elapsed() / 1000.);
1057
1058         {
1059                 lock_guard<mutex> lock(sampling_mutex_);
1060                 capture_state_ = state;
1061         }
1062
1063         capture_state_changed(state);
1064 }
1065
1066 void Session::update_signals()
1067 {
1068         if (!device_) {
1069                 signalbases_.clear();
1070                 logic_data_.reset();
1071                 for (shared_ptr<views::ViewBase>& view : views_) {
1072                         view->clear_signalbases();
1073 #ifdef ENABLE_DECODE
1074                         view->clear_decode_signals();
1075 #endif
1076                 }
1077                 return;
1078         }
1079
1080         lock_guard<recursive_mutex> lock(data_mutex_);
1081
1082         const shared_ptr<sigrok::Device> sr_dev = device_->device();
1083         if (!sr_dev) {
1084                 signalbases_.clear();
1085                 logic_data_.reset();
1086                 for (shared_ptr<views::ViewBase>& view : views_) {
1087                         view->clear_signalbases();
1088 #ifdef ENABLE_DECODE
1089                         view->clear_decode_signals();
1090 #endif
1091                 }
1092                 return;
1093         }
1094
1095         // Detect what data types we will receive
1096         auto channels = sr_dev->channels();
1097         unsigned int logic_channel_count = count_if(
1098                 channels.begin(), channels.end(),
1099                 [] (shared_ptr<Channel> channel) {
1100                         return channel->type() == sigrok::ChannelType::LOGIC; });
1101
1102         // Create a common data container for the logic signalbases
1103         {
1104                 lock_guard<recursive_mutex> data_lock(data_mutex_);
1105
1106                 if (logic_channel_count == 0) {
1107                         logic_data_.reset();
1108                 } else if (!logic_data_ ||
1109                         logic_data_->num_channels() != logic_channel_count) {
1110                         logic_data_.reset(new data::Logic(logic_channel_count));
1111                         assert(logic_data_);
1112                 }
1113         }
1114
1115         // Create signalbases if necessary
1116         for (auto channel : sr_dev->channels()) {
1117
1118                 // Try to find the channel in the list of existing signalbases
1119                 const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1120                         [&](const shared_ptr<SignalBase> &sb) { return sb->channel() == channel; });
1121
1122                 // Not found, let's make a signalbase for it
1123                 if (iter == signalbases_.cend()) {
1124                         shared_ptr<SignalBase> signalbase;
1125                         switch(channel->type()->id()) {
1126                         case SR_CHANNEL_LOGIC:
1127                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::LogicChannel);
1128                                 signalbases_.push_back(signalbase);
1129
1130                                 all_signal_data_.insert(logic_data_);
1131                                 signalbase->set_data(logic_data_);
1132
1133                                 connect(this, SIGNAL(capture_state_changed(int)),
1134                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1135                                 break;
1136
1137                         case SR_CHANNEL_ANALOG:
1138                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::AnalogChannel);
1139                                 signalbases_.push_back(signalbase);
1140
1141                                 shared_ptr<data::Analog> data(new data::Analog());
1142                                 all_signal_data_.insert(data);
1143                                 signalbase->set_data(data);
1144
1145                                 connect(this, SIGNAL(capture_state_changed(int)),
1146                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1147                                 break;
1148                         }
1149                 }
1150         }
1151
1152         // Create and assign default signal groups if needed
1153         if (signal_groups_.empty()) {
1154                 for (auto& entry : sr_dev->channel_groups()) {
1155                         const shared_ptr<sigrok::ChannelGroup>& group = entry.second;
1156
1157                         if (group->channels().size() <= 1)
1158                                 continue;
1159
1160                         SignalGroup* sg = new SignalGroup(QString::fromStdString(entry.first));
1161                         for (const shared_ptr<sigrok::Channel>& channel : group->channels()) {
1162                                 for (shared_ptr<data::SignalBase> s : signalbases_) {
1163                                         if (s->channel() == channel) {
1164                                                 sg->append_signal(s);
1165                                                 break;
1166                                         }
1167                                 }
1168                         }
1169                         signal_groups_.emplace_back(sg);
1170                 }
1171         }
1172
1173         // Update all views
1174         for (shared_ptr<views::ViewBase>& viewbase : views_) {
1175                 vector< shared_ptr<SignalBase> > view_signalbases =
1176                                 viewbase->signalbases();
1177
1178                 // Add all non-decode signalbases that don't yet exist in the view
1179                 for (shared_ptr<SignalBase>& session_sb : signalbases_) {
1180                         if (session_sb->type() == SignalBase::DecodeChannel)
1181                                 continue;
1182
1183                         const auto iter = find_if(view_signalbases.cbegin(), view_signalbases.cend(),
1184                                 [&](const shared_ptr<SignalBase> &sb) { return sb == session_sb; });
1185
1186                         if (iter == view_signalbases.cend())
1187                                 viewbase->add_signalbase(session_sb);
1188                 }
1189
1190                 // Remove all non-decode signalbases that no longer exist
1191                 for (shared_ptr<SignalBase>& view_sb : view_signalbases) {
1192                         if (view_sb->type() == SignalBase::DecodeChannel)
1193                                 continue;
1194
1195                         const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1196                                 [&](const shared_ptr<SignalBase> &sb) { return sb == view_sb; });
1197
1198                         if (iter == signalbases_.cend())
1199                                 viewbase->remove_signalbase(view_sb);
1200                 }
1201         }
1202
1203         signals_changed();
1204 }
1205
1206 shared_ptr<data::SignalBase> Session::signalbase_from_channel(
1207         shared_ptr<sigrok::Channel> channel) const
1208 {
1209         for (shared_ptr<data::SignalBase> sig : signalbases_) {
1210                 assert(sig);
1211                 if (sig->channel() == channel)
1212                         return sig;
1213         }
1214         return shared_ptr<data::SignalBase>();
1215 }
1216
1217 void Session::sample_thread_proc(function<void (const QString)> error_handler)
1218 {
1219         assert(error_handler);
1220
1221 #ifdef ENABLE_FLOW
1222         pipeline_ = Pipeline::create();
1223
1224         source_ = ElementFactory::create_element("filesrc", "source");
1225         sink_ = RefPtr<AppSink>::cast_dynamic(ElementFactory::create_element("appsink", "sink"));
1226
1227         pipeline_->add(source_)->add(sink_);
1228         source_->link(sink_);
1229
1230         source_->set_property("location", Glib::ustring("/tmp/dummy_binary"));
1231
1232         sink_->set_property("emit-signals", TRUE);
1233         sink_->signal_new_sample().connect(sigc::mem_fun(*this, &Session::on_gst_new_sample));
1234
1235         // Get the bus from the pipeline and add a bus watch to the default main context
1236         RefPtr<Bus> bus = pipeline_->get_bus();
1237         bus->add_watch(sigc::mem_fun(this, &Session::on_gst_bus_message));
1238
1239         // Start pipeline and Wait until it finished processing
1240         pipeline_done_interrupt_ = false;
1241         pipeline_->set_state(Gst::STATE_PLAYING);
1242
1243         unique_lock<mutex> pipeline_done_lock_(pipeline_done_mutex_);
1244         pipeline_done_cond_.wait(pipeline_done_lock_);
1245
1246         // Let the pipeline free all resources
1247         pipeline_->set_state(Gst::STATE_NULL);
1248
1249 #else
1250         if (!device_)
1251                 return;
1252
1253         try {
1254                 cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1255         } catch (Error& e) {
1256                 cur_samplerate_ = 0;
1257         }
1258
1259         out_of_memory_ = false;
1260
1261         {
1262                 lock_guard<recursive_mutex> lock(data_mutex_);
1263                 cur_logic_segment_.reset();
1264                 cur_analog_segments_.clear();
1265                 for (shared_ptr<data::SignalBase> sb : signalbases_)
1266                         sb->clear_sample_data();
1267         }
1268         highest_segment_id_ = -1;
1269         frame_began_ = false;
1270
1271         try {
1272                 device_->start();
1273         } catch (Error& e) {
1274                 error_handler(e.what());
1275                 return;
1276         }
1277
1278         set_capture_state(device_->session()->trigger() ?
1279                 AwaitingTrigger : Running);
1280
1281         try {
1282                 device_->run();
1283         } catch (Error& e) {
1284                 error_handler(e.what());
1285                 set_capture_state(Stopped);
1286                 return;
1287         } catch (QString& e) {
1288                 error_handler(e);
1289                 set_capture_state(Stopped);
1290                 return;
1291         }
1292
1293         set_capture_state(Stopped);
1294
1295         // Confirm that SR_DF_END was received
1296         if (cur_logic_segment_)
1297                 qDebug() << "WARNING: SR_DF_END was not received.";
1298 #endif
1299
1300         // Optimize memory usage
1301         free_unused_memory();
1302
1303         // We now have unsaved data unless we just "captured" from a file
1304         shared_ptr<devices::File> file_device =
1305                 dynamic_pointer_cast<devices::File>(device_);
1306
1307         if (!file_device)
1308                 data_saved_ = false;
1309
1310         if (out_of_memory_)
1311                 error_handler(tr("Out of memory, acquisition stopped."));
1312 }
1313
1314 void Session::free_unused_memory()
1315 {
1316         for (const shared_ptr<data::SignalData>& data : all_signal_data_) {
1317                 const vector< shared_ptr<data::Segment> > segments = data->segments();
1318
1319                 for (const shared_ptr<data::Segment>& segment : segments)
1320                         segment->free_unused_memory();
1321         }
1322 }
1323
1324 void Session::signal_new_segment()
1325 {
1326         int new_segment_id = 0;
1327
1328         if ((cur_logic_segment_ != nullptr) || !cur_analog_segments_.empty()) {
1329
1330                 // Determine new frame/segment number, assuming that all
1331                 // signals have the same number of frames/segments
1332                 if (cur_logic_segment_) {
1333                         new_segment_id = logic_data_->get_segment_count() - 1;
1334                 } else {
1335                         shared_ptr<sigrok::Channel> any_channel =
1336                                 (*cur_analog_segments_.begin()).first;
1337
1338                         shared_ptr<data::SignalBase> base = signalbase_from_channel(any_channel);
1339                         assert(base);
1340
1341                         shared_ptr<data::Analog> data(base->analog_data());
1342                         assert(data);
1343
1344                         new_segment_id = data->get_segment_count() - 1;
1345                 }
1346         }
1347
1348         if (new_segment_id > highest_segment_id_) {
1349                 highest_segment_id_ = new_segment_id;
1350                 segment_sample_count_.emplace_back(0);
1351                 new_segment(highest_segment_id_);
1352         }
1353 }
1354
1355 void Session::signal_segment_completed()
1356 {
1357         int segment_id = 0;
1358
1359         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
1360                 // We only care about analog and logic channels, not derived ones
1361                 if (signalbase->type() == data::SignalBase::AnalogChannel) {
1362                         segment_id = signalbase->analog_data()->get_segment_count() - 1;
1363                         break;
1364                 }
1365
1366                 if (signalbase->type() == data::SignalBase::LogicChannel) {
1367                         segment_id = signalbase->logic_data()->get_segment_count() - 1;
1368                         break;
1369                 }
1370         }
1371
1372         if (segment_id >= 0)
1373                 segment_completed(segment_id);
1374 }
1375
1376 #ifdef ENABLE_FLOW
1377 bool Session::on_gst_bus_message(const Glib::RefPtr<Gst::Bus>& bus, const Glib::RefPtr<Gst::Message>& message)
1378 {
1379         (void)bus;
1380
1381         if ((message->get_source() == pipeline_) && \
1382                 ((message->get_message_type() == Gst::MESSAGE_EOS)))
1383                 pipeline_done_cond_.notify_one();
1384
1385         // TODO Also evaluate MESSAGE_STREAM_STATUS to receive error notifications
1386
1387         return true;
1388 }
1389
1390 Gst::FlowReturn Session::on_gst_new_sample()
1391 {
1392         RefPtr<Gst::Sample> sample = sink_->pull_sample();
1393         RefPtr<Gst::Buffer> buf = sample->get_buffer();
1394
1395         for (uint32_t block_id = 0; block_id < buf->n_memory(); block_id++) {
1396                 RefPtr<Gst::Memory> buf_mem = buf->get_memory(block_id);
1397                 Gst::MapInfo mapinfo;
1398                 buf_mem->map(mapinfo, Gst::MAP_READ);
1399
1400                 shared_ptr<sigrok::Packet> logic_packet =
1401                         sr_context->create_logic_packet(mapinfo.get_data(), buf->get_size(), 1);
1402
1403                 try {
1404                         feed_in_logic(dynamic_pointer_cast<sigrok::Logic>(logic_packet->payload()));
1405                 } catch (bad_alloc&) {
1406                         out_of_memory_ = true;
1407                         device_->stop();
1408                         buf_mem->unmap(mapinfo);
1409                         return Gst::FLOW_ERROR;
1410                 }
1411
1412                 buf_mem->unmap(mapinfo);
1413         }
1414
1415         return Gst::FLOW_OK;
1416 }
1417 #endif
1418
1419 void Session::feed_in_header()
1420 {
1421         // Nothing to do here for now
1422 }
1423
1424 void Session::feed_in_meta(shared_ptr<Meta> meta)
1425 {
1426         for (auto& entry : meta->config()) {
1427                 switch (entry.first->id()) {
1428                 case SR_CONF_SAMPLERATE:
1429                         cur_samplerate_ = g_variant_get_uint64(entry.second.gobj());
1430                         break;
1431                 default:
1432                         qDebug() << "Received meta data key" << entry.first->id() << ", ignoring.";
1433                         break;
1434                 }
1435         }
1436
1437         signals_changed();
1438 }
1439
1440 void Session::feed_in_trigger()
1441 {
1442         // The channel containing most samples should be most accurate
1443         uint64_t sample_count = 0;
1444
1445         {
1446                 for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
1447                         assert(d);
1448                         uint64_t temp_count = 0;
1449
1450                         const vector< shared_ptr<pv::data::Segment> > segments =
1451                                 d->segments();
1452                         for (const shared_ptr<pv::data::Segment> &s : segments)
1453                                 temp_count += s->get_sample_count();
1454
1455                         if (temp_count > sample_count)
1456                                 sample_count = temp_count;
1457                 }
1458         }
1459
1460         uint32_t segment_id = 0;  // Default segment when no frames are used
1461
1462         // If a frame began, we'd ideally be able to use the highest segment ID for
1463         // the trigger. However, as new segments are only created when logic or
1464         // analog data comes in, this doesn't work if the trigger appears right
1465         // after the beginning of the frame, before any sample data.
1466         // For this reason, we use highest segment ID + 1 if no sample data came in
1467         // yet and the highest segment ID otherwise.
1468         if (frame_began_) {
1469                 segment_id = highest_segment_id_;
1470                 if (!cur_logic_segment_ && (cur_analog_segments_.size() == 0))
1471                         segment_id++;
1472         }
1473
1474         // TODO Create timestamp from segment start time + segment's current sample count
1475         util::Timestamp timestamp = sample_count / get_samplerate();
1476         trigger_list_.emplace_back(segment_id, timestamp);
1477         trigger_event(segment_id, timestamp);
1478 }
1479
1480 void Session::feed_in_frame_begin()
1481 {
1482         frame_began_ = true;
1483 }
1484
1485 void Session::feed_in_frame_end()
1486 {
1487         if (!frame_began_)
1488                 return;
1489
1490         {
1491                 lock_guard<recursive_mutex> lock(data_mutex_);
1492
1493                 if (cur_logic_segment_)
1494                         cur_logic_segment_->set_complete();
1495
1496                 for (auto& entry : cur_analog_segments_) {
1497                         shared_ptr<data::AnalogSegment> segment = entry.second;
1498                         segment->set_complete();
1499                 }
1500
1501                 cur_logic_segment_.reset();
1502                 cur_analog_segments_.clear();
1503         }
1504
1505         frame_began_ = false;
1506
1507         signal_segment_completed();
1508 }
1509
1510 void Session::feed_in_logic(shared_ptr<sigrok::Logic> logic)
1511 {
1512         if (logic->data_length() == 0) {
1513                 qDebug() << "WARNING: Received logic packet with 0 samples.";
1514                 return;
1515         }
1516
1517         if (logic->unit_size() > 8)
1518                 throw QString(tr("Can't handle more than 64 logic channels."));
1519
1520         if (!cur_samplerate_)
1521                 try {
1522                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1523                 } catch (Error& e) {
1524                         // Do nothing
1525                 }
1526
1527         lock_guard<recursive_mutex> lock(data_mutex_);
1528
1529         if (!logic_data_) {
1530                 // The only reason logic_data_ would not have been created is
1531                 // if it was not possible to determine the signals when the
1532                 // device was created.
1533                 update_signals();
1534         }
1535
1536         if (!cur_logic_segment_) {
1537                 // This could be the first packet after a trigger
1538                 set_capture_state(Running);
1539
1540                 // Create a new data segment
1541                 cur_logic_segment_ = make_shared<data::LogicSegment>(
1542                         *logic_data_, logic_data_->get_segment_count(),
1543                         logic->unit_size(), cur_samplerate_);
1544                 logic_data_->push_segment(cur_logic_segment_);
1545
1546                 signal_new_segment();
1547         }
1548
1549         cur_logic_segment_->append_payload(logic);
1550
1551         segment_sample_count_[highest_segment_id_] =
1552                 max(segment_sample_count_[highest_segment_id_], cur_logic_segment_->get_sample_count());
1553
1554         data_received();
1555 }
1556
1557 void Session::feed_in_analog(shared_ptr<sigrok::Analog> analog)
1558 {
1559         if (analog->num_samples() == 0) {
1560                 qDebug() << "WARNING: Received analog packet with 0 samples.";
1561                 return;
1562         }
1563
1564         if (!cur_samplerate_)
1565                 try {
1566                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1567                 } catch (Error& e) {
1568                         // Do nothing
1569                 }
1570
1571         lock_guard<recursive_mutex> lock(data_mutex_);
1572
1573         const vector<shared_ptr<Channel>> channels = analog->channels();
1574         bool sweep_beginning = false;
1575
1576         unique_ptr<float[]> data(new float[analog->num_samples() * channels.size()]);
1577         analog->get_data_as_float(data.get());
1578
1579         if (signalbases_.empty())
1580                 update_signals();
1581
1582         float *channel_data = data.get();
1583         for (auto& channel : channels) {
1584                 shared_ptr<data::AnalogSegment> segment;
1585
1586                 // Try to get the segment of the channel
1587                 const map< shared_ptr<Channel>, shared_ptr<data::AnalogSegment> >::
1588                         iterator iter = cur_analog_segments_.find(channel);
1589                 if (iter != cur_analog_segments_.end())
1590                         segment = (*iter).second;
1591                 else {
1592                         // If no segment was found, this means we haven't
1593                         // created one yet. i.e. this is the first packet
1594                         // in the sweep containing this segment.
1595                         sweep_beginning = true;
1596
1597                         // Find the analog data associated with the channel
1598                         shared_ptr<data::SignalBase> base = signalbase_from_channel(channel);
1599                         assert(base);
1600
1601                         shared_ptr<data::Analog> data(base->analog_data());
1602                         assert(data);
1603
1604                         // Create a segment, keep it in the maps of channels
1605                         segment = make_shared<data::AnalogSegment>(
1606                                 *data, data->get_segment_count(), cur_samplerate_);
1607                         cur_analog_segments_[channel] = segment;
1608
1609                         // Push the segment into the analog data.
1610                         data->push_segment(segment);
1611
1612                         signal_new_segment();
1613                 }
1614
1615                 assert(segment);
1616
1617                 // Append the samples in the segment
1618                 segment->append_interleaved_samples(channel_data++, analog->num_samples(),
1619                         channels.size());
1620
1621                 segment_sample_count_[highest_segment_id_] =
1622                         max(segment_sample_count_[highest_segment_id_], segment->get_sample_count());
1623         }
1624
1625         if (sweep_beginning) {
1626                 // This could be the first packet after a trigger
1627                 set_capture_state(Running);
1628         }
1629
1630         data_received();
1631 }
1632
1633 void Session::data_feed_in(shared_ptr<sigrok::Device> device,
1634         shared_ptr<Packet> packet)
1635 {
1636         (void)device;
1637
1638         assert(device);
1639         assert(device == device_->device());
1640         assert(packet);
1641
1642         switch (packet->type()->id()) {
1643         case SR_DF_HEADER:
1644                 feed_in_header();
1645                 break;
1646
1647         case SR_DF_META:
1648                 feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload()));
1649                 break;
1650
1651         case SR_DF_TRIGGER:
1652                 feed_in_trigger();
1653                 break;
1654
1655         case SR_DF_LOGIC:
1656                 try {
1657                         feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
1658                 } catch (bad_alloc&) {
1659                         out_of_memory_ = true;
1660                         device_->stop();
1661                 }
1662                 break;
1663
1664         case SR_DF_ANALOG:
1665                 try {
1666                         feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
1667                 } catch (bad_alloc&) {
1668                         out_of_memory_ = true;
1669                         device_->stop();
1670                 }
1671                 break;
1672
1673         case SR_DF_FRAME_BEGIN:
1674                 feed_in_frame_begin();
1675                 break;
1676
1677         case SR_DF_FRAME_END:
1678                 feed_in_frame_end();
1679                 break;
1680
1681         case SR_DF_END:
1682                 // Strictly speaking, this is performed when a frame end marker was
1683                 // received, so there's no point doing this again. However, not all
1684                 // devices use frames, and for those devices, we need to do it here.
1685                 {
1686                         lock_guard<recursive_mutex> lock(data_mutex_);
1687
1688                         if (cur_logic_segment_)
1689                                 cur_logic_segment_->set_complete();
1690
1691                         for (auto& entry : cur_analog_segments_) {
1692                                 shared_ptr<data::AnalogSegment> segment = entry.second;
1693                                 segment->set_complete();
1694                         }
1695
1696                         cur_logic_segment_.reset();
1697                         cur_analog_segments_.clear();
1698                 }
1699                 break;
1700
1701         default:
1702                 break;
1703         }
1704 }
1705
1706 void Session::on_data_saved()
1707 {
1708         data_saved_ = true;
1709 }
1710
1711 #ifdef ENABLE_DECODE
1712 void Session::on_new_decoders_selected(vector<const srd_decoder*> decoders)
1713 {
1714         assert(decoders.size() > 0);
1715
1716         shared_ptr<data::DecodeSignal> signal = add_decode_signal();
1717
1718         if (signal)
1719                 for (unsigned int i = 0; i < decoders.size(); i++) {
1720                         const srd_decoder* d = decoders[i];
1721                         signal->stack_decoder(d, !(i < decoders.size() - 1));
1722                 }
1723 }
1724 #endif
1725
1726 } // namespace pv