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