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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #ifdef _WIN32
  22 // Windows: Avoid boost/thread namespace pollution (which includes windows.h).
  23 #define NOGDI
  24 #define NORESOURCE
  25 #endif
  26 #include <boost/thread/locks.hpp>
  27 #include <boost/thread/shared_mutex.hpp>
  28
  29 #ifdef ENABLE_DECODE
  30 #include <libsigrokdecode/libsigrokdecode.h>
  31 #endif
  32
  33 #include "session.hpp"
  34
  35 #include "devicemanager.hpp"
  36
  37 #include "data/analog.hpp"
  38 #include "data/analogsegment.hpp"
  39 #include "data/decoderstack.hpp"
  40 #include "data/logic.hpp"
  41 #include "data/logicsegment.hpp"
  42 #include "data/signalbase.hpp"
  43 #include "data/decode/decoder.hpp"
  44
  45 #include "devices/hardwaredevice.hpp"
  46 #include "devices/sessionfile.hpp"
  47
  48 #include "toolbars/mainbar.hpp"
  49
  50 #include "view/analogsignal.hpp"
  51 #include "view/decodetrace.hpp"
  52 #include "view/logicsignal.hpp"
  53 #include "view/signal.hpp"
  54 #include "view/view.hpp"
  55
  56 #include <cassert>
  57 #include <mutex>
  58 #include <stdexcept>
  59
  60 #include <sys/stat.h>
  61
  62 #include <QDebug>
  63
  64 #include <libsigrokcxx/libsigrokcxx.hpp>
  65
  66 using boost::shared_lock;
  67 using boost::shared_mutex;
  68 using boost::unique_lock;
  69
  70 using std::dynamic_pointer_cast;
  71 using std::function;
  72 using std::lock_guard;
  73 using std::list;
  74 using std::map;
  75 using std::mutex;
  76 using std::recursive_mutex;
  77 using std::set;
  78 using std::shared_ptr;
  79 using std::string;
  80 using std::unordered_set;
  81 using std::vector;
  82
  83 using sigrok::Analog;
  84 using sigrok::Channel;
  85 using sigrok::ChannelType;
  86 using sigrok::ConfigKey;
  87 using sigrok::DatafeedCallbackFunction;
  88 using sigrok::Error;
  89 using sigrok::Header;
  90 using sigrok::Logic;
  91 using sigrok::Meta;
  92 using sigrok::Packet;
  93 using sigrok::PacketPayload;
  94 using sigrok::Session;
  95 using sigrok::SessionDevice;
  96
  97 using Glib::VariantBase;
  98 using Glib::Variant;
  99
 100 namespace pv {
 101 Session::Session(DeviceManager &device_manager, QString name) :
 102         device_manager_(device_manager),
 103         name_(name),
 104         capture_state_(Stopped),
 105         cur_samplerate_(0)
 106 {
 107 }
 108
 109 Session::~Session()
 110 {
 111         // Stop and join to the thread
 112         stop_capture();
 113 }
 114
 115 DeviceManager& Session::device_manager()
 116 {
 117         return device_manager_;
 118 }
 119
 120 const DeviceManager& Session::device_manager() const
 121 {
 122         return device_manager_;
 123 }
 124
 125 shared_ptr<sigrok::Session> Session::session() const
 126 {
 127         if (!device_)
 128                 return shared_ptr<sigrok::Session>();
 129         return device_->session();
 130 }
 131
 132 shared_ptr<devices::Device> Session::device() const
 133 {
 134         return device_;
 135 }
 136
 137 QString Session::name() const
 138 {
 139         return name_;
 140 }
 141
 142 void Session::set_name(QString name)
 143 {
 144         if (default_name_.isEmpty())
 145                 default_name_ = name;
 146
 147         name_ = name;
 148
 149         name_changed();
 150 }
 151
 152 std::shared_ptr<pv::view::View> Session::main_view() const
 153 {
 154         return main_view_;
 155 }
 156
 157 void Session::set_main_bar(std::shared_ptr<pv::toolbars::MainBar> main_bar)
 158 {
 159         main_bar_ = main_bar;
 160 }
 161
 162 shared_ptr<pv::toolbars::MainBar> Session::main_bar() const
 163 {
 164         return main_bar_;
 165 }
 166
 167 void Session::save_settings(QSettings &settings) const
 168 {
 169         map<string, string> dev_info;
 170         list<string> key_list;
 171
 172         if (device_) {
 173                 settings.beginGroup("Device");
 174                 key_list.push_back("vendor");
 175                 key_list.push_back("model");
 176                 key_list.push_back("version");
 177                 key_list.push_back("serial_num");
 178                 key_list.push_back("connection_id");
 179
 180                 dev_info = device_manager_.get_device_info(device_);
 181
 182                 for (string key : key_list) {
 183                         if (dev_info.count(key))
 184                                 settings.setValue(QString::fromUtf8(key.c_str()),
 185                                                 QString::fromUtf8(dev_info.at(key).c_str()));
 186                         else
 187                                 settings.remove(QString::fromUtf8(key.c_str()));
 188                 }
 189
 190                 // TODO Save channel settings and decoders
 191
 192                 settings.endGroup();
 193         }
 194 }
 195
 196 void Session::restore_settings(QSettings &settings)
 197 {
 198         map<string, string> dev_info;
 199         list<string> key_list;
 200         shared_ptr<devices::HardwareDevice> device;
 201
 202         // Re-select last used device if possible but only if it's not demo
 203         settings.beginGroup("Device");
 204         key_list.push_back("vendor");
 205         key_list.push_back("model");
 206         key_list.push_back("version");
 207         key_list.push_back("serial_num");
 208         key_list.push_back("connection_id");
 209
 210         for (string key : key_list) {
 211                 const QString k = QString::fromStdString(key);
 212                 if (!settings.contains(k))
 213                         continue;
 214
 215                 const string value = settings.value(k).toString().toStdString();
 216                 if (!value.empty())
 217                         dev_info.insert(std::make_pair(key, value));
 218         }
 219
 220         if (dev_info.count("model") > 0)
 221                 device = device_manager_.find_device_from_info(dev_info);
 222
 223         if (device) {
 224                 set_device(device);
 225
 226                 // TODO Restore channel settings and decoders
 227         }
 228
 229         settings.endGroup();
 230 }
 231
 232 void Session::set_device(shared_ptr<devices::Device> device)
 233 {
 234         assert(device);
 235
 236         // Ensure we are not capturing before setting the device
 237         stop_capture();
 238
 239         if (device_)
 240                 device_->close();
 241
 242         device_.reset();
 243
 244         // Revert name back to default name (e.g. "Untitled-1") as the data is gone
 245         name_ = default_name_;
 246         name_changed();
 247
 248         // Remove all stored data
 249         for (std::shared_ptr<pv::view::View> view : views_) {
 250                 view->clear_signals();
 251 #ifdef ENABLE_DECODE
 252                 view->clear_decode_traces();
 253 #endif
 254         }
 255         for (const shared_ptr<data::SignalData> d : all_signal_data_)
 256                 d->clear();
 257         all_signal_data_.clear();
 258         signalbases_.clear();
 259         cur_logic_segment_.reset();
 260
 261         for (auto entry : cur_analog_segments_) {
 262                 shared_ptr<sigrok::Channel>(entry.first).reset();
 263                 shared_ptr<data::AnalogSegment>(entry.second).reset();
 264         }
 265
 266         logic_data_.reset();
 267
 268         signals_changed();
 269
 270         device_ = std::move(device);
 271
 272         try {
 273                 device_->open();
 274         } catch (const QString &e) {
 275                 device_.reset();
 276                 device_selected();
 277                 throw;
 278         }
 279
 280         device_->session()->add_datafeed_callback([=]
 281                 (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) {
 282                         data_feed_in(device, packet);
 283                 });
 284
 285         update_signals();
 286         device_selected();
 287 }
 288
 289 void Session::set_default_device()
 290 {
 291         const list< shared_ptr<devices::HardwareDevice> > &devices =
 292                 device_manager_.devices();
 293
 294         if (devices.empty())
 295                 return;
 296
 297         // Try and find the demo device and select that by default
 298         const auto iter = std::find_if(devices.begin(), devices.end(),
 299                 [] (const shared_ptr<devices::HardwareDevice> &d) {
 300                         return d->hardware_device()->driver()->name() ==
 301                         "demo"; });
 302         set_device((iter == devices.end()) ? devices.front() : *iter);
 303 }
 304
 305 Session::capture_state Session::get_capture_state() const
 306 {
 307         lock_guard<mutex> lock(sampling_mutex_);
 308         return capture_state_;
 309 }
 310
 311 void Session::start_capture(function<void (const QString)> error_handler)
 312 {
 313         if (!device_) {
 314                 error_handler(tr("No active device set, can't start acquisition."));
 315                 return;
 316         }
 317
 318         stop_capture();
 319
 320         // Check that at least one channel is enabled
 321         const shared_ptr<sigrok::Device> sr_dev = device_->device();
 322         if (sr_dev) {
 323                 const auto channels = sr_dev->channels();
 324                 if (!std::any_of(channels.begin(), channels.end(),
 325                         [](shared_ptr<Channel> channel) {
 326                                 return channel->enabled(); })) {
 327                         error_handler(tr("No channels enabled."));
 328                         return;
 329                 }
 330         }
 331
 332         // Clear signal data
 333         for (const shared_ptr<data::SignalData> d : all_signal_data_)
 334                 d->clear();
 335
 336         // Revert name back to default name (e.g. "Untitled-1") as the data is gone
 337         name_ = default_name_;
 338         name_changed();
 339
 340         // Begin the session
 341         sampling_thread_ = std::thread(
 342                 &Session::sample_thread_proc, this, error_handler);
 343 }
 344
 345 void Session::stop_capture()
 346 {
 347         if (get_capture_state() != Stopped)
 348                 device_->stop();
 349
 350         // Check that sampling stopped
 351         if (sampling_thread_.joinable())
 352                 sampling_thread_.join();
 353 }
 354
 355 void Session::register_view(std::shared_ptr<pv::view::View> view)
 356 {
 357         if (views_.empty()) {
 358                 main_view_ = view;
 359         }
 360
 361         views_.insert(view);
 362 }
 363
 364 void Session::deregister_view(std::shared_ptr<pv::view::View> view)
 365 {
 366         views_.erase(view);
 367
 368         if (views_.empty()) {
 369                 main_view_.reset();
 370
 371                 // Without a view there can be no main bar
 372                 main_bar_.reset();
 373         }
 374 }
 375
 376 bool Session::has_view(std::shared_ptr<pv::view::View> view)
 377 {
 378         return views_.find(view) != views_.end();
 379 }
 380
 381 double Session::get_samplerate() const
 382 {
 383         double samplerate = 0.0;
 384
 385         for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) {
 386                 assert(d);
 387                 const vector< shared_ptr<pv::data::Segment> > segments =
 388                         d->segments();
 389                 for (const shared_ptr<pv::data::Segment> &s : segments)
 390                         samplerate = std::max(samplerate, s->samplerate());
 391         }
 392         // If there is no sample rate given we use samples as unit
 393         if (samplerate == 0.0)
 394                 samplerate = 1.0;
 395
 396         return samplerate;
 397 }
 398
 399 const std::unordered_set< std::shared_ptr<data::SignalBase> >
 400         Session::signalbases() const
 401 {
 402         return signalbases_;
 403 }
 404
 405 #ifdef ENABLE_DECODE
 406 bool Session::add_decoder(srd_decoder *const dec)
 407 {
 408         map<const srd_channel*, shared_ptr<data::SignalBase> > channels;
 409         shared_ptr<data::DecoderStack> decoder_stack;
 410
 411         try {
 412                 // Create the decoder
 413                 decoder_stack = shared_ptr<data::DecoderStack>(
 414                         new data::DecoderStack(*this, dec));
 415
 416                 // Make a list of all the channels
 417                 std::vector<const srd_channel*> all_channels;
 418                 for (const GSList *i = dec->channels; i; i = i->next)
 419                         all_channels.push_back((const srd_channel*)i->data);
 420                 for (const GSList *i = dec->opt_channels; i; i = i->next)
 421                         all_channels.push_back((const srd_channel*)i->data);
 422
 423                 // Auto select the initial channels
 424                 for (const srd_channel *pdch : all_channels)
 425                         for (shared_ptr<data::SignalBase> b : signalbases_) {
 426                                 if (b->type() == ChannelType::LOGIC) {
 427                                         if (QString::fromUtf8(pdch->name).toLower().
 428                                                 contains(b->name().toLower()))
 429                                                 channels[pdch] = b;
 430                                 }
 431                         }
 432
 433                 assert(decoder_stack);
 434                 assert(!decoder_stack->stack().empty());
 435                 assert(decoder_stack->stack().front());
 436                 decoder_stack->stack().front()->set_channels(channels);
 437
 438                 // Create the decode signal
 439                 shared_ptr<data::SignalBase> signalbase =
 440                         shared_ptr<data::SignalBase>(new data::SignalBase(nullptr));
 441
 442                 signalbase->set_decoder_stack(decoder_stack);
 443
 444                 for (std::shared_ptr<pv::view::View> view : views_)
 445                         view->add_decode_trace(signalbase);
 446         } catch (std::runtime_error e) {
 447                 return false;
 448         }
 449
 450         signals_changed();
 451
 452         // Do an initial decode
 453         decoder_stack->begin_decode();
 454
 455         return true;
 456 }
 457
 458 void Session::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
 459 {
 460         for (std::shared_ptr<pv::view::View> view : views_)
 461                 view->remove_decode_trace(signalbase);
 462 }
 463 #endif
 464
 465 void Session::set_capture_state(capture_state state)
 466 {
 467         bool changed;
 468
 469         {
 470                 lock_guard<mutex> lock(sampling_mutex_);
 471                 changed = capture_state_ != state;
 472                 capture_state_ = state;
 473         }
 474
 475         if (changed)
 476                 capture_state_changed(state);
 477 }
 478
 479 void Session::update_signals()
 480 {
 481         if (!device_) {
 482                 signalbases_.clear();
 483                 logic_data_.reset();
 484                 for (std::shared_ptr<pv::view::View> view : views_) {
 485                         view->clear_signals();
 486 #ifdef ENABLE_DECODE
 487                         view->clear_decode_traces();
 488 #endif
 489                 }
 490                 return;
 491         }
 492
 493         lock_guard<recursive_mutex> lock(data_mutex_);
 494
 495         const shared_ptr<sigrok::Device> sr_dev = device_->device();
 496         if (!sr_dev) {
 497                 signalbases_.clear();
 498                 logic_data_.reset();
 499                 for (std::shared_ptr<pv::view::View> view : views_) {
 500                         view->clear_signals();
 501 #ifdef ENABLE_DECODE
 502                         view->clear_decode_traces();
 503 #endif
 504                 }
 505                 return;
 506         }
 507
 508         // Detect what data types we will receive
 509         auto channels = sr_dev->channels();
 510         unsigned int logic_channel_count = std::count_if(
 511                 channels.begin(), channels.end(),
 512                 [] (shared_ptr<Channel> channel) {
 513                         return channel->type() == ChannelType::LOGIC; });
 514
 515         // Create data containers for the logic data segments
 516         {
 517                 lock_guard<recursive_mutex> data_lock(data_mutex_);
 518
 519                 if (logic_channel_count == 0) {
 520                         logic_data_.reset();
 521                 } else if (!logic_data_ ||
 522                         logic_data_->num_channels() != logic_channel_count) {
 523                         logic_data_.reset(new data::Logic(
 524                                 logic_channel_count));
 525                         assert(logic_data_);
 526                 }
 527         }
 528
 529         // Make the signals list
 530         for (std::shared_ptr<pv::view::View> view : views_) {
 531                 unordered_set< shared_ptr<view::Signal> > prev_sigs(view->signals());
 532                 view->clear_signals();
 533
 534                 for (auto channel : sr_dev->channels()) {
 535                         shared_ptr<data::SignalBase> signalbase;
 536                         shared_ptr<view::Signal> signal;
 537
 538                         // Find the channel in the old signals
 539                         const auto iter = std::find_if(
 540                                 prev_sigs.cbegin(), prev_sigs.cend(),
 541                                 [&](const shared_ptr<view::Signal> &s) {
 542                                         return s->base()->channel() == channel;
 543                                 });
 544                         if (iter != prev_sigs.end()) {
 545                                 // Copy the signal from the old set to the new
 546                                 signal = *iter;
 547                         } else {
 548                                 // Find the signalbase for this channel if possible
 549                                 signalbase.reset();
 550                                 for (const shared_ptr<data::SignalBase> b : signalbases_)
 551                                         if (b->channel() == channel)
 552                                                 signalbase = b;
 553
 554                                 switch(channel->type()->id()) {
 555                                 case SR_CHANNEL_LOGIC:
 556                                         if (!signalbase) {
 557                                                 signalbase = shared_ptr<data::SignalBase>(
 558                                                         new data::SignalBase(channel));
 559                                                 signalbases_.insert(signalbase);
 560
 561                                                 all_signal_data_.insert(logic_data_);
 562                                                 signalbase->set_data(logic_data_);
 563                                         }
 564
 565                                         signal = shared_ptr<view::Signal>(
 566                                                 new view::LogicSignal(*this,
 567                                                         device_, signalbase));
 568                                         view->add_signal(signal);
 569                                         break;
 570
 571                                 case SR_CHANNEL_ANALOG:
 572                                 {
 573                                         if (!signalbase) {
 574                                                 signalbase = shared_ptr<data::SignalBase>(
 575                                                         new data::SignalBase(channel));
 576                                                 signalbases_.insert(signalbase);
 577
 578                                                 shared_ptr<data::Analog> data(new data::Analog());
 579                                                 all_signal_data_.insert(data);
 580                                                 signalbase->set_data(data);
 581                                         }
 582
 583                                         signal = shared_ptr<view::Signal>(
 584                                                 new view::AnalogSignal(
 585                                                         *this, signalbase));
 586                                         view->add_signal(signal);
 587                                         break;
 588                                 }
 589
 590                                 default:
 591                                         assert(0);
 592                                         break;
 593                                 }
 594                         }
 595                 }
 596         }
 597
 598         signals_changed();
 599 }
 600
 601 shared_ptr<data::SignalBase> Session::signalbase_from_channel(
 602         shared_ptr<sigrok::Channel> channel) const
 603 {
 604         for (shared_ptr<data::SignalBase> sig : signalbases_) {
 605                 assert(sig);
 606                 if (sig->channel() == channel)
 607                         return sig;
 608         }
 609         return shared_ptr<data::SignalBase>();
 610 }
 611
 612 void Session::sample_thread_proc(function<void (const QString)> error_handler)
 613 {
 614         assert(error_handler);
 615
 616         if (!device_)
 617                 return;
 618
 619         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
 620
 621         out_of_memory_ = false;
 622
 623         try {
 624                 device_->start();
 625         } catch (Error e) {
 626                 error_handler(e.what());
 627                 return;
 628         }
 629
 630         set_capture_state(device_->session()->trigger() ?
 631                 AwaitingTrigger : Running);
 632
 633         device_->run();
 634         set_capture_state(Stopped);
 635
 636         // Confirm that SR_DF_END was received
 637         if (cur_logic_segment_) {
 638                 qDebug("SR_DF_END was not received.");
 639                 assert(0);
 640         }
 641
 642         if (out_of_memory_)
 643                 error_handler(tr("Out of memory, acquisition stopped."));
 644 }
 645
 646 void Session::feed_in_header()
 647 {
 648         cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
 649 }
 650
 651 void Session::feed_in_meta(shared_ptr<Meta> meta)
 652 {
 653         for (auto entry : meta->config()) {
 654                 switch (entry.first->id()) {
 655                 case SR_CONF_SAMPLERATE:
 656                         // We can't rely on the header to always contain the sample rate,
 657                         // so in case it's supplied via a meta packet, we use it.
 658                         if (!cur_samplerate_)
 659                                 cur_samplerate_ = g_variant_get_uint64(entry.second.gobj());
 660
 661                         /// @todo handle samplerate changes
 662                         break;
 663                 default:
 664                         // Unknown metadata is not an error.
 665                         break;
 666                 }
 667         }
 668
 669         signals_changed();
 670 }
 671
 672 void Session::feed_in_trigger()
 673 {
 674         // The channel containing most samples should be most accurate
 675         uint64_t sample_count = 0;
 676
 677         {
 678                 for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) {
 679                         assert(d);
 680                         uint64_t temp_count = 0;
 681
 682                         const vector< shared_ptr<pv::data::Segment> > segments =
 683                                 d->segments();
 684                         for (const shared_ptr<pv::data::Segment> &s : segments)
 685                                 temp_count += s->get_sample_count();
 686
 687                         if (temp_count > sample_count)
 688                                 sample_count = temp_count;
 689                 }
 690         }
 691
 692         trigger_event(sample_count / get_samplerate());
 693 }
 694
 695 void Session::feed_in_frame_begin()
 696 {
 697         if (cur_logic_segment_ || !cur_analog_segments_.empty())
 698                 frame_began();
 699 }
 700
 701 void Session::feed_in_logic(shared_ptr<Logic> logic)
 702 {
 703         lock_guard<recursive_mutex> lock(data_mutex_);
 704
 705         const size_t sample_count = logic->data_length() / logic->unit_size();
 706
 707         if (!logic_data_) {
 708                 // The only reason logic_data_ would not have been created is
 709                 // if it was not possible to determine the signals when the
 710                 // device was created.
 711                 update_signals();
 712         }
 713
 714         if (!cur_logic_segment_) {
 715                 // This could be the first packet after a trigger
 716                 set_capture_state(Running);
 717
 718                 // Create a new data segment
 719                 cur_logic_segment_ = shared_ptr<data::LogicSegment>(
 720                         new data::LogicSegment(
 721                                 logic, cur_samplerate_, sample_count));
 722                 logic_data_->push_segment(cur_logic_segment_);
 723
 724                 // @todo Putting this here means that only listeners querying
 725                 // for logic will be notified. Currently the only user of
 726                 // frame_began is DecoderStack, but in future we need to signal
 727                 // this after both analog and logic sweeps have begun.
 728                 frame_began();
 729         } else {
 730                 // Append to the existing data segment
 731                 cur_logic_segment_->append_payload(logic);
 732         }
 733
 734         data_received();
 735 }
 736
 737 void Session::feed_in_analog(shared_ptr<Analog> analog)
 738 {
 739         lock_guard<recursive_mutex> lock(data_mutex_);
 740
 741         const vector<shared_ptr<Channel>> channels = analog->channels();
 742         const unsigned int channel_count = channels.size();
 743         const size_t sample_count = analog->num_samples() / channel_count;
 744         const float *data = static_cast<const float *>(analog->data_pointer());
 745         bool sweep_beginning = false;
 746
 747         if (signalbases_.empty())
 748                 update_signals();
 749
 750         for (auto channel : channels) {
 751                 shared_ptr<data::AnalogSegment> segment;
 752
 753                 // Try to get the segment of the channel
 754                 const map< shared_ptr<Channel>, shared_ptr<data::AnalogSegment> >::
 755                         iterator iter = cur_analog_segments_.find(channel);
 756                 if (iter != cur_analog_segments_.end())
 757                         segment = (*iter).second;
 758                 else {
 759                         // If no segment was found, this means we haven't
 760                         // created one yet. i.e. this is the first packet
 761                         // in the sweep containing this segment.
 762                         sweep_beginning = true;
 763
 764                         // Create a segment, keep it in the maps of channels
 765                         segment = shared_ptr<data::AnalogSegment>(
 766                                 new data::AnalogSegment(
 767                                         cur_samplerate_, sample_count));
 768                         cur_analog_segments_[channel] = segment;
 769
 770                         // Find the analog data associated with the channel
 771                         shared_ptr<data::SignalBase> base = signalbase_from_channel(channel);
 772                         assert(base);
 773
 774                         shared_ptr<data::Analog> data(base->analog_data());
 775                         assert(data);
 776
 777                         // Push the segment into the analog data.
 778                         data->push_segment(segment);
 779                 }
 780
 781                 assert(segment);
 782
 783                 // Append the samples in the segment
 784                 segment->append_interleaved_samples(data++, sample_count,
 785                         channel_count);
 786         }
 787
 788         if (sweep_beginning) {
 789                 // This could be the first packet after a trigger
 790                 set_capture_state(Running);
 791         }
 792
 793         data_received();
 794 }
 795
 796 void Session::data_feed_in(shared_ptr<sigrok::Device> device,
 797         shared_ptr<Packet> packet)
 798 {
 799         (void)device;
 800
 801         assert(device);
 802         assert(device == device_->device());
 803         assert(packet);
 804
 805         switch (packet->type()->id()) {
 806         case SR_DF_HEADER:
 807                 feed_in_header();
 808                 break;
 809
 810         case SR_DF_META:
 811                 feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload()));
 812                 break;
 813
 814         case SR_DF_TRIGGER:
 815                 feed_in_trigger();
 816                 break;
 817
 818         case SR_DF_FRAME_BEGIN:
 819                 feed_in_frame_begin();
 820                 break;
 821
 822         case SR_DF_LOGIC:
 823                 try {
 824                         feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
 825                 } catch (std::bad_alloc) {
 826                         out_of_memory_ = true;
 827                         device_->stop();
 828                 }
 829                 break;
 830
 831         case SR_DF_ANALOG:
 832                 try {
 833                         feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
 834                 } catch (std::bad_alloc) {
 835                         out_of_memory_ = true;
 836                         device_->stop();
 837                 }
 838                 break;
 839
 840         case SR_DF_END:
 841         {
 842                 {
 843                         lock_guard<recursive_mutex> lock(data_mutex_);
 844                         cur_logic_segment_.reset();
 845                         cur_analog_segments_.clear();
 846                 }
 847                 frame_ended();
 848                 break;
 849         }
 850         default:
 851                 break;
 852         }
 853 }
 854
 855 } // namespace pv