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                 Q_EMIT session_error_raised(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         acq_start_time_ = Glib::DateTime::create_now_local();
 833
 834         // Begin the session
 835         sampling_thread_ = std::thread(&Session::sample_thread_proc, this, error_handler);
 836 }
 837
 838 void Session::stop_capture()
 839 {
 840         if (get_capture_state() != Stopped)
 841                 device_->stop();
 842
 843         // Check that sampling stopped
 844         if (sampling_thread_.joinable())
 845                 sampling_thread_.join();
 846 }
 847
 848 void Session::register_view(shared_ptr<views::ViewBase> view)
 849 {
 850         if (views_.empty())
 851                 main_view_ = view;
 852
 853         views_.push_back(view);
 854
 855         // Add all device signals
 856         update_signals();
 857
 858         // Add all other signals
 859         vector< shared_ptr<data::SignalBase> > view_signalbases = view->signalbases();
 860
 861         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
 862                 const int sb_exists = count_if(
 863                         view_signalbases.cbegin(), view_signalbases.cend(),
 864                         [&](const shared_ptr<data::SignalBase> &sb) {
 865                                 return sb == signalbase;
 866                         });
 867
 868                 // Add the signal to the view if it doesn't have it yet
 869                 if (!sb_exists)
 870                         switch (signalbase->type()) {
 871                         case data::SignalBase::AnalogChannel:
 872                         case data::SignalBase::LogicChannel:
 873                         case data::SignalBase::MathChannel:
 874                                 view->add_signalbase(signalbase);
 875                                 break;
 876                         case data::SignalBase::DecodeChannel:
 877 #ifdef ENABLE_DECODE
 878                                 view->add_decode_signal(dynamic_pointer_cast<data::DecodeSignal>(signalbase));
 879 #endif
 880                                 break;
 881                         }
 882         }
 883
 884         signals_changed();
 885 }
 886
 887 void Session::deregister_view(shared_ptr<views::ViewBase> view)
 888 {
 889         views_.erase(std::remove_if(views_.begin(), views_.end(),
 890                 [&](shared_ptr<views::ViewBase> v) { return v == view; }),
 891                 views_.end());
 892
 893         if (views_.empty()) {
 894                 main_view_.reset();
 895
 896                 // Without a view there can be no main bar
 897                 main_bar_.reset();
 898         }
 899 }
 900
 901 bool Session::has_view(shared_ptr<views::ViewBase> view)
 902 {
 903         for (shared_ptr<views::ViewBase>& v : views_)
 904                 if (v == view)
 905                         return true;
 906
 907         return false;
 908 }
 909
 910 double Session::get_samplerate() const
 911 {
 912         double samplerate = 0.0;
 913
 914         for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
 915                 assert(d);
 916                 const vector< shared_ptr<pv::data::Segment> > segments =
 917                         d->segments();
 918                 for (const shared_ptr<pv::data::Segment>& s : segments)
 919                         samplerate = max(samplerate, s->samplerate());
 920         }
 921         // If there is no sample rate given we use samples as unit
 922         if (samplerate == 0.0)
 923                 samplerate = 1.0;
 924
 925         return samplerate;
 926 }
 927
 928 Glib::DateTime Session::get_acquisition_start_time() const
 929 {
 930         return acq_start_time_;
 931 }
 932
 933 uint32_t Session::get_highest_segment_id() const
 934 {
 935         return highest_segment_id_;
 936 }
 937
 938 uint64_t Session::get_segment_sample_count(uint32_t segment_id) const
 939 {
 940         if (segment_id < segment_sample_count_.size())
 941                 return segment_sample_count_[segment_id];
 942         else
 943                 return 0;
 944 }
 945
 946 vector<util::Timestamp> Session::get_triggers(uint32_t segment_id) const
 947 {
 948         vector<util::Timestamp> result;
 949
 950         for (const pair<uint32_t, util::Timestamp>& entry : trigger_list_)
 951                 if (entry.first == segment_id)
 952                         result.push_back(entry.second);
 953
 954         return result;
 955 }
 956
 957 const vector< shared_ptr<data::SignalBase> > Session::signalbases() const
 958 {
 959         return signalbases_;
 960 }
 961
 962 uint32_t Session::get_signal_count(data::SignalBase::ChannelType type) const
 963 {
 964         return count_if(signalbases_.begin(), signalbases_.end(),
 965                 [&] (shared_ptr<SignalBase> sb) { return sb->type() == type; });
 966 }
 967
 968 uint32_t Session::get_next_signal_index(data::SignalBase::ChannelType type)
 969 {
 970         next_index_list_[type]++;
 971         return next_index_list_[type];
 972 }
 973
 974 void Session::add_generated_signal(shared_ptr<data::SignalBase> signal)
 975 {
 976         signalbases_.push_back(signal);
 977
 978         for (shared_ptr<views::ViewBase>& view : views_)
 979                 view->add_signalbase(signal);
 980
 981         update_signals();
 982 }
 983
 984 void Session::remove_generated_signal(shared_ptr<data::SignalBase> signal)
 985 {
 986         if (shutting_down_)
 987                 return;
 988
 989         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
 990                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
 991                 signalbases_.end());
 992
 993         for (shared_ptr<views::ViewBase>& view : views_)
 994                 view->remove_signalbase(signal);
 995
 996         update_signals();
 997 }
 998
 999 #ifdef ENABLE_DECODE
1000 shared_ptr<data::DecodeSignal> Session::add_decode_signal()
1001 {
1002         shared_ptr<data::DecodeSignal> signal;
1003
1004         try {
1005                 // Create the decode signal
1006                 signal = make_shared<data::DecodeSignal>(*this);
1007
1008                 signalbases_.push_back(signal);
1009
1010                 // Add the decode signal to all views
1011                 for (shared_ptr<views::ViewBase>& view : views_)
1012                         view->add_decode_signal(signal);
1013         } catch (runtime_error& e) {
1014                 remove_decode_signal(signal);
1015                 return nullptr;
1016         }
1017
1018         signals_changed();
1019
1020         return signal;
1021 }
1022
1023 void Session::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
1024 {
1025         if (shutting_down_)
1026                 return;
1027
1028         signalbases_.erase(std::remove_if(signalbases_.begin(), signalbases_.end(),
1029                 [&](shared_ptr<data::SignalBase> s) { return s == signal; }),
1030                 signalbases_.end());
1031
1032         for (shared_ptr<views::ViewBase>& view : views_)
1033                 view->remove_decode_signal(signal);
1034
1035         signals_changed();
1036 }
1037 #endif
1038
1039 bool Session::all_segments_complete(uint32_t segment_id) const
1040 {
1041         bool all_complete = true;
1042
1043         for (const shared_ptr<data::SignalBase>& base : signalbases_)
1044                 if (!base->segment_is_complete(segment_id))
1045                         all_complete = false;
1046
1047         return all_complete;
1048 }
1049
1050 MetadataObjManager* Session::metadata_obj_manager()
1051 {
1052         return &metadata_obj_manager_;
1053 }
1054
1055 void Session::set_capture_state(capture_state state)
1056 {
1057         if (state == capture_state_)
1058                 return;
1059
1060         if (state == Running)
1061                 acq_time_.restart();
1062         if (state == Stopped)
1063                 qDebug("Acquisition took %.2f s", acq_time_.elapsed() / 1000.);
1064
1065         {
1066                 lock_guard<mutex> lock(sampling_mutex_);
1067                 capture_state_ = state;
1068         }
1069
1070         capture_state_changed(state);
1071 }
1072
1073 void Session::update_signals()
1074 {
1075         if (!device_) {
1076                 signalbases_.clear();
1077                 logic_data_.reset();
1078                 for (shared_ptr<views::ViewBase>& view : views_) {
1079                         view->clear_signalbases();
1080 #ifdef ENABLE_DECODE
1081                         view->clear_decode_signals();
1082 #endif
1083                 }
1084                 return;
1085         }
1086
1087         lock_guard<recursive_mutex> lock(data_mutex_);
1088
1089         const shared_ptr<sigrok::Device> sr_dev = device_->device();
1090         if (!sr_dev) {
1091                 signalbases_.clear();
1092                 logic_data_.reset();
1093                 for (shared_ptr<views::ViewBase>& view : views_) {
1094                         view->clear_signalbases();
1095 #ifdef ENABLE_DECODE
1096                         view->clear_decode_signals();
1097 #endif
1098                 }
1099                 return;
1100         }
1101
1102         // Detect what data types we will receive
1103         auto channels = sr_dev->channels();
1104         unsigned int logic_channel_count = count_if(
1105                 channels.begin(), channels.end(),
1106                 [] (shared_ptr<Channel> channel) {
1107                         return channel->type() == sigrok::ChannelType::LOGIC; });
1108
1109         // Create a common data container for the logic signalbases
1110         {
1111                 lock_guard<recursive_mutex> data_lock(data_mutex_);
1112
1113                 if (logic_channel_count == 0) {
1114                         logic_data_.reset();
1115                 } else if (!logic_data_ ||
1116                         logic_data_->num_channels() != logic_channel_count) {
1117                         logic_data_.reset(new data::Logic(logic_channel_count));
1118                         assert(logic_data_);
1119                 }
1120         }
1121
1122         // Create signalbases if necessary
1123         for (auto channel : sr_dev->channels()) {
1124
1125                 // Try to find the channel in the list of existing signalbases
1126                 const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1127                         [&](const shared_ptr<SignalBase> &sb) { return sb->channel() == channel; });
1128
1129                 // Not found, let's make a signalbase for it
1130                 if (iter == signalbases_.cend()) {
1131                         shared_ptr<SignalBase> signalbase;
1132                         switch(channel->type()->id()) {
1133                         case SR_CHANNEL_LOGIC:
1134                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::LogicChannel);
1135                                 signalbases_.push_back(signalbase);
1136
1137                                 all_signal_data_.insert(logic_data_);
1138                                 signalbase->set_data(logic_data_);
1139
1140                                 connect(this, SIGNAL(capture_state_changed(int)),
1141                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1142                                 break;
1143
1144                         case SR_CHANNEL_ANALOG:
1145                                 signalbase = make_shared<data::SignalBase>(channel, data::SignalBase::AnalogChannel);
1146                                 signalbases_.push_back(signalbase);
1147
1148                                 shared_ptr<data::Analog> data(new data::Analog());
1149                                 all_signal_data_.insert(data);
1150                                 signalbase->set_data(data);
1151
1152                                 connect(this, SIGNAL(capture_state_changed(int)),
1153                                         signalbase.get(), SLOT(on_capture_state_changed(int)));
1154                                 break;
1155                         }
1156                 }
1157         }
1158
1159         // Create and assign default signal groups if needed
1160         if (signal_groups_.empty()) {
1161                 for (auto& entry : sr_dev->channel_groups()) {
1162                         const shared_ptr<sigrok::ChannelGroup>& group = entry.second;
1163
1164                         if (group->channels().size() <= 1)
1165                                 continue;
1166
1167                         SignalGroup* sg = new SignalGroup(QString::fromStdString(entry.first));
1168                         for (const shared_ptr<sigrok::Channel>& channel : group->channels()) {
1169                                 for (shared_ptr<data::SignalBase> s : signalbases_) {
1170                                         if (s->channel() == channel) {
1171                                                 sg->append_signal(s);
1172                                                 break;
1173                                         }
1174                                 }
1175                         }
1176                         signal_groups_.emplace_back(sg);
1177                 }
1178         }
1179
1180         // Update all views
1181         for (shared_ptr<views::ViewBase>& viewbase : views_) {
1182                 vector< shared_ptr<SignalBase> > view_signalbases =
1183                                 viewbase->signalbases();
1184
1185                 // Add all non-decode signalbases that don't yet exist in the view
1186                 for (shared_ptr<SignalBase>& session_sb : signalbases_) {
1187                         if (session_sb->type() == SignalBase::DecodeChannel)
1188                                 continue;
1189
1190                         const auto iter = find_if(view_signalbases.cbegin(), view_signalbases.cend(),
1191                                 [&](const shared_ptr<SignalBase> &sb) { return sb == session_sb; });
1192
1193                         if (iter == view_signalbases.cend())
1194                                 viewbase->add_signalbase(session_sb);
1195                 }
1196
1197                 // Remove all non-decode signalbases that no longer exist
1198                 for (shared_ptr<SignalBase>& view_sb : view_signalbases) {
1199                         if (view_sb->type() == SignalBase::DecodeChannel)
1200                                 continue;
1201
1202                         const auto iter = find_if(signalbases_.cbegin(), signalbases_.cend(),
1203                                 [&](const shared_ptr<SignalBase> &sb) { return sb == view_sb; });
1204
1205                         if (iter == signalbases_.cend())
1206                                 viewbase->remove_signalbase(view_sb);
1207                 }
1208         }
1209
1210         signals_changed();
1211 }
1212
1213 shared_ptr<data::SignalBase> Session::signalbase_from_channel(
1214         shared_ptr<sigrok::Channel> channel) const
1215 {
1216         for (shared_ptr<data::SignalBase> sig : signalbases_) {
1217                 assert(sig);
1218                 if (sig->channel() == channel)
1219                         return sig;
1220         }
1221         return shared_ptr<data::SignalBase>();
1222 }
1223
1224 void Session::sample_thread_proc(function<void (const QString)> error_handler)
1225 {
1226         assert(error_handler);
1227
1228 #ifdef ENABLE_FLOW
1229         pipeline_ = Pipeline::create();
1230
1231         source_ = ElementFactory::create_element("filesrc", "source");
1232         sink_ = RefPtr<AppSink>::cast_dynamic(ElementFactory::create_element("appsink", "sink"));
1233
1234         pipeline_->add(source_)->add(sink_);
1235         source_->link(sink_);
1236
1237         source_->set_property("location", Glib::ustring("/tmp/dummy_binary"));
1238
1239         sink_->set_property("emit-signals", TRUE);
1240         sink_->signal_new_sample().connect(sigc::mem_fun(*this, &Session::on_gst_new_sample));
1241
1242         // Get the bus from the pipeline and add a bus watch to the default main context
1243         RefPtr<Bus> bus = pipeline_->get_bus();
1244         bus->add_watch(sigc::mem_fun(this, &Session::on_gst_bus_message));
1245
1246         // Start pipeline and Wait until it finished processing
1247         pipeline_done_interrupt_ = false;
1248         pipeline_->set_state(Gst::STATE_PLAYING);
1249
1250         unique_lock<mutex> pipeline_done_lock_(pipeline_done_mutex_);
1251         pipeline_done_cond_.wait(pipeline_done_lock_);
1252
1253         // Let the pipeline free all resources
1254         pipeline_->set_state(Gst::STATE_NULL);
1255
1256 #else
1257         if (!device_)
1258                 return;
1259
1260         try {
1261                 cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1262         } catch (Error& e) {
1263                 cur_samplerate_ = 0;
1264         }
1265
1266         out_of_memory_ = false;
1267
1268         {
1269                 lock_guard<recursive_mutex> lock(data_mutex_);
1270                 cur_logic_segment_.reset();
1271                 cur_analog_segments_.clear();
1272                 for (shared_ptr<data::SignalBase> sb : signalbases_)
1273                         sb->clear_sample_data();
1274         }
1275         highest_segment_id_ = -1;
1276         frame_began_ = false;
1277
1278         try {
1279                 device_->start();
1280         } catch (Error& e) {
1281                 error_handler(e.what());
1282                 return;
1283         }
1284
1285         set_capture_state(device_->session()->trigger() ?
1286                 AwaitingTrigger : Running);
1287
1288         try {
1289                 device_->run();
1290         } catch (Error& e) {
1291                 error_handler(e.what());
1292                 set_capture_state(Stopped);
1293                 return;
1294         } catch (QString& e) {
1295                 error_handler(e);
1296                 set_capture_state(Stopped);
1297                 return;
1298         }
1299
1300         set_capture_state(Stopped);
1301
1302         // Confirm that SR_DF_END was received
1303         if (cur_logic_segment_)
1304                 qDebug() << "WARNING: SR_DF_END was not received.";
1305 #endif
1306
1307         // Optimize memory usage
1308         free_unused_memory();
1309
1310         // We now have unsaved data unless we just "captured" from a file
1311         shared_ptr<devices::File> file_device =
1312                 dynamic_pointer_cast<devices::File>(device_);
1313
1314         if (!file_device)
1315                 data_saved_ = false;
1316
1317         if (out_of_memory_)
1318                 error_handler(tr("Out of memory, acquisition stopped."));
1319 }
1320
1321 void Session::free_unused_memory()
1322 {
1323         for (const shared_ptr<data::SignalData>& data : all_signal_data_) {
1324                 const vector< shared_ptr<data::Segment> > segments = data->segments();
1325
1326                 for (const shared_ptr<data::Segment>& segment : segments)
1327                         segment->free_unused_memory();
1328         }
1329 }
1330
1331 void Session::signal_new_segment()
1332 {
1333         int new_segment_id = 0;
1334
1335         if ((cur_logic_segment_ != nullptr) || !cur_analog_segments_.empty()) {
1336
1337                 // Determine new frame/segment number, assuming that all
1338                 // signals have the same number of frames/segments
1339                 if (cur_logic_segment_) {
1340                         new_segment_id = logic_data_->get_segment_count() - 1;
1341                 } else {
1342                         shared_ptr<sigrok::Channel> any_channel =
1343                                 (*cur_analog_segments_.begin()).first;
1344
1345                         shared_ptr<data::SignalBase> base = signalbase_from_channel(any_channel);
1346                         assert(base);
1347
1348                         shared_ptr<data::Analog> data(base->analog_data());
1349                         assert(data);
1350
1351                         new_segment_id = data->get_segment_count() - 1;
1352                 }
1353         }
1354
1355         if (new_segment_id > highest_segment_id_) {
1356                 highest_segment_id_ = new_segment_id;
1357                 segment_sample_count_.emplace_back(0);
1358                 new_segment(highest_segment_id_);
1359         }
1360 }
1361
1362 void Session::signal_segment_completed()
1363 {
1364         int segment_id = 0;
1365
1366         for (const shared_ptr<data::SignalBase>& signalbase : signalbases_) {
1367                 // We only care about analog and logic channels, not derived ones
1368                 if (signalbase->type() == data::SignalBase::AnalogChannel) {
1369                         segment_id = signalbase->analog_data()->get_segment_count() - 1;
1370                         break;
1371                 }
1372
1373                 if (signalbase->type() == data::SignalBase::LogicChannel) {
1374                         segment_id = signalbase->logic_data()->get_segment_count() - 1;
1375                         break;
1376                 }
1377         }
1378
1379         if (segment_id >= 0)
1380                 segment_completed(segment_id);
1381 }
1382
1383 #ifdef ENABLE_FLOW
1384 bool Session::on_gst_bus_message(const Glib::RefPtr<Gst::Bus>& bus, const Glib::RefPtr<Gst::Message>& message)
1385 {
1386         (void)bus;
1387
1388         if ((message->get_source() == pipeline_) && \
1389                 ((message->get_message_type() == Gst::MESSAGE_EOS)))
1390                 pipeline_done_cond_.notify_one();
1391
1392         // TODO Also evaluate MESSAGE_STREAM_STATUS to receive error notifications
1393
1394         return true;
1395 }
1396
1397 Gst::FlowReturn Session::on_gst_new_sample()
1398 {
1399         RefPtr<Gst::Sample> sample = sink_->pull_sample();
1400         RefPtr<Gst::Buffer> buf = sample->get_buffer();
1401
1402         for (uint32_t block_id = 0; block_id < buf->n_memory(); block_id++) {
1403                 RefPtr<Gst::Memory> buf_mem = buf->get_memory(block_id);
1404                 Gst::MapInfo mapinfo;
1405                 buf_mem->map(mapinfo, Gst::MAP_READ);
1406
1407                 shared_ptr<sigrok::Packet> logic_packet =
1408                         sr_context->create_logic_packet(mapinfo.get_data(), buf->get_size(), 1);
1409
1410                 try {
1411                         feed_in_logic(dynamic_pointer_cast<sigrok::Logic>(logic_packet->payload()));
1412                 } catch (bad_alloc&) {
1413                         out_of_memory_ = true;
1414                         device_->stop();
1415                         buf_mem->unmap(mapinfo);
1416                         return Gst::FLOW_ERROR;
1417                 }
1418
1419                 buf_mem->unmap(mapinfo);
1420         }
1421
1422         return Gst::FLOW_OK;
1423 }
1424 #endif
1425
1426 void Session::feed_in_header()
1427 {
1428         // Nothing to do here for now
1429 }
1430
1431 void Session::feed_in_meta(shared_ptr<Meta> meta)
1432 {
1433         for (auto& entry : meta->config()) {
1434                 switch (entry.first->id()) {
1435                 case SR_CONF_SAMPLERATE:
1436                         cur_samplerate_ = g_variant_get_uint64(entry.second.gobj());
1437                         break;
1438                 default:
1439                         qDebug() << "Received meta data key" << entry.first->id() << ", ignoring.";
1440                         break;
1441                 }
1442         }
1443
1444         signals_changed();
1445 }
1446
1447 void Session::feed_in_trigger()
1448 {
1449         // The channel containing most samples should be most accurate
1450         uint64_t sample_count = 0;
1451
1452         {
1453                 for (const shared_ptr<pv::data::SignalData>& d : all_signal_data_) {
1454                         assert(d);
1455                         uint64_t temp_count = 0;
1456
1457                         const vector< shared_ptr<pv::data::Segment> > segments =
1458                                 d->segments();
1459                         for (const shared_ptr<pv::data::Segment> &s : segments)
1460                                 temp_count += s->get_sample_count();
1461
1462                         if (temp_count > sample_count)
1463                                 sample_count = temp_count;
1464                 }
1465         }
1466
1467         uint32_t segment_id = 0;  // Default segment when no frames are used
1468
1469         // If a frame began, we'd ideally be able to use the highest segment ID for
1470         // the trigger. However, as new segments are only created when logic or
1471         // analog data comes in, this doesn't work if the trigger appears right
1472         // after the beginning of the frame, before any sample data.
1473         // For this reason, we use highest segment ID + 1 if no sample data came in
1474         // yet and the highest segment ID otherwise.
1475         if (frame_began_) {
1476                 segment_id = highest_segment_id_;
1477                 if (!cur_logic_segment_ && (cur_analog_segments_.size() == 0))
1478                         segment_id++;
1479         }
1480
1481         // TODO Create timestamp from segment start time + segment's current sample count
1482         util::Timestamp timestamp = sample_count / get_samplerate();
1483         trigger_list_.emplace_back(segment_id, timestamp);
1484         trigger_event(segment_id, timestamp);
1485 }
1486
1487 void Session::feed_in_frame_begin()
1488 {
1489         frame_began_ = true;
1490 }
1491
1492 void Session::feed_in_frame_end()
1493 {
1494         if (!frame_began_)
1495                 return;
1496
1497         {
1498                 lock_guard<recursive_mutex> lock(data_mutex_);
1499
1500                 if (cur_logic_segment_)
1501                         cur_logic_segment_->set_complete();
1502
1503                 for (auto& entry : cur_analog_segments_) {
1504                         shared_ptr<data::AnalogSegment> segment = entry.second;
1505                         segment->set_complete();
1506                 }
1507
1508                 cur_logic_segment_.reset();
1509                 cur_analog_segments_.clear();
1510         }
1511
1512         frame_began_ = false;
1513
1514         signal_segment_completed();
1515 }
1516
1517 void Session::feed_in_logic(shared_ptr<sigrok::Logic> logic)
1518 {
1519         if (logic->data_length() == 0) {
1520                 qDebug() << "WARNING: Received logic packet with 0 samples.";
1521                 return;
1522         }
1523
1524         if (logic->unit_size() > 8)
1525                 throw QString(tr("Can't handle more than 64 logic channels."));
1526
1527         if (!cur_samplerate_)
1528                 try {
1529                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1530                 } catch (Error& e) {
1531                         // Do nothing
1532                 }
1533
1534         lock_guard<recursive_mutex> lock(data_mutex_);
1535
1536         if (!logic_data_) {
1537                 // The only reason logic_data_ would not have been created is
1538                 // if it was not possible to determine the signals when the
1539                 // device was created.
1540                 update_signals();
1541         }
1542
1543         if (!cur_logic_segment_) {
1544                 // This could be the first packet after a trigger
1545                 set_capture_state(Running);
1546
1547                 // Create a new data segment
1548                 cur_logic_segment_ = make_shared<data::LogicSegment>(
1549                         *logic_data_, logic_data_->get_segment_count(),
1550                         logic->unit_size(), cur_samplerate_);
1551                 logic_data_->push_segment(cur_logic_segment_);
1552
1553                 signal_new_segment();
1554         }
1555
1556         cur_logic_segment_->append_payload(logic);
1557
1558         segment_sample_count_[highest_segment_id_] =
1559                 max(segment_sample_count_[highest_segment_id_], cur_logic_segment_->get_sample_count());
1560
1561         data_received();
1562 }
1563
1564 void Session::feed_in_analog(shared_ptr<sigrok::Analog> analog)
1565 {
1566         if (analog->num_samples() == 0) {
1567                 qDebug() << "WARNING: Received analog packet with 0 samples.";
1568                 return;
1569         }
1570
1571         if (!cur_samplerate_)
1572                 try {
1573                         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
1574                 } catch (Error& e) {
1575                         // Do nothing
1576                 }
1577
1578         lock_guard<recursive_mutex> lock(data_mutex_);
1579
1580         const vector<shared_ptr<Channel>> channels = analog->channels();
1581         bool sweep_beginning = false;
1582
1583         unique_ptr<float[]> data(new float[analog->num_samples() * channels.size()]);
1584         analog->get_data_as_float(data.get());
1585
1586         if (signalbases_.empty())
1587                 update_signals();
1588
1589         float *channel_data = data.get();
1590         for (auto& channel : channels) {
1591                 shared_ptr<data::AnalogSegment> segment;
1592
1593                 // Try to get the segment of the channel
1594                 const map< shared_ptr<Channel>, shared_ptr<data::AnalogSegment> >::
1595                         iterator iter = cur_analog_segments_.find(channel);
1596                 if (iter != cur_analog_segments_.end())
1597                         segment = (*iter).second;
1598                 else {
1599                         // If no segment was found, this means we haven't
1600                         // created one yet. i.e. this is the first packet
1601                         // in the sweep containing this segment.
1602                         sweep_beginning = true;
1603
1604                         // Find the analog data associated with the channel
1605                         shared_ptr<data::SignalBase> base = signalbase_from_channel(channel);
1606                         assert(base);
1607
1608                         shared_ptr<data::Analog> data(base->analog_data());
1609                         assert(data);
1610
1611                         // Create a segment, keep it in the maps of channels
1612                         segment = make_shared<data::AnalogSegment>(
1613                                 *data, data->get_segment_count(), cur_samplerate_);
1614                         cur_analog_segments_[channel] = segment;
1615
1616                         // Push the segment into the analog data.
1617                         data->push_segment(segment);
1618
1619                         signal_new_segment();
1620                 }
1621
1622                 assert(segment);
1623
1624                 // Append the samples in the segment
1625                 segment->append_interleaved_samples(channel_data++, analog->num_samples(),
1626                         channels.size());
1627
1628                 segment_sample_count_[highest_segment_id_] =
1629                         max(segment_sample_count_[highest_segment_id_], segment->get_sample_count());
1630         }
1631
1632         if (sweep_beginning) {
1633                 // This could be the first packet after a trigger
1634                 set_capture_state(Running);
1635         }
1636
1637         data_received();
1638 }
1639
1640 void Session::data_feed_in(shared_ptr<sigrok::Device> device,
1641         shared_ptr<Packet> packet)
1642 {
1643         (void)device;
1644
1645         assert(device);
1646         assert(device == device_->device());
1647         assert(packet);
1648
1649         switch (packet->type()->id()) {
1650         case SR_DF_HEADER:
1651                 feed_in_header();
1652                 break;
1653
1654         case SR_DF_META:
1655                 feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload()));
1656                 break;
1657
1658         case SR_DF_TRIGGER:
1659                 feed_in_trigger();
1660                 break;
1661
1662         case SR_DF_LOGIC:
1663                 try {
1664                         feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
1665                 } catch (bad_alloc&) {
1666                         out_of_memory_ = true;
1667                         device_->stop();
1668                 }
1669                 break;
1670
1671         case SR_DF_ANALOG:
1672                 try {
1673                         feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
1674                 } catch (bad_alloc&) {
1675                         out_of_memory_ = true;
1676                         device_->stop();
1677                 }
1678                 break;
1679
1680         case SR_DF_FRAME_BEGIN:
1681                 feed_in_frame_begin();
1682                 break;
1683
1684         case SR_DF_FRAME_END:
1685                 feed_in_frame_end();
1686                 break;
1687
1688         case SR_DF_END:
1689                 // Strictly speaking, this is performed when a frame end marker was
1690                 // received, so there's no point doing this again. However, not all
1691                 // devices use frames, and for those devices, we need to do it here.
1692                 {
1693                         lock_guard<recursive_mutex> lock(data_mutex_);
1694
1695                         if (cur_logic_segment_)
1696                                 cur_logic_segment_->set_complete();
1697
1698                         for (auto& entry : cur_analog_segments_) {
1699                                 shared_ptr<data::AnalogSegment> segment = entry.second;
1700                                 segment->set_complete();
1701                         }
1702
1703                         cur_logic_segment_.reset();
1704                         cur_analog_segments_.clear();
1705                 }
1706                 break;
1707
1708         default:
1709                 break;
1710         }
1711 }
1712
1713 void Session::on_data_saved()
1714 {
1715         data_saved_ = true;
1716 }
1717
1718 #ifdef ENABLE_DECODE
1719 void Session::on_new_decoders_selected(vector<const srd_decoder*> decoders)
1720 {
1721         assert(decoders.size() > 0);
1722
1723         shared_ptr<data::DecodeSignal> signal = add_decode_signal();
1724
1725         if (signal)
1726                 for (unsigned int i = 0; i < decoders.size(); i++) {
1727                         const srd_decoder* d = decoders[i];
1728                         signal->stack_decoder(d, !(i < decoders.size() - 1));
1729                 }
1730 }
1731 #endif
1732
1733 } // namespace pv