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