bindings/cxx/classes.cpp

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013-2014 Martin Ling <martin-sigrok@earth.li>
   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 3 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 "libsigrok/libsigrok.hpp"
  21
  22 namespace sigrok
  23 {
  24
  25 /** Helper function to translate C errors to C++ exceptions. */
  26 static void check(int result)
  27 {
  28         if (result != SR_OK)
  29                 throw Error(result);
  30 }
  31
  32 /** Helper function to obtain valid strings from possibly null input. */
  33 static const char *valid_string(const char *input)
  34 {
  35         if (input != NULL)
  36                 return input;
  37         else
  38                 return "";
  39 }
  40
  41 /** Helper function to convert between map<string, string> and GHashTable */
  42
  43 static GHashTable *map_to_hash(map<string, string> input)
  44 {
  45         auto output = g_hash_table_new_full(
  46                 g_str_hash, g_str_equal, g_free, g_free);
  47         for (auto entry : input)
  48                 g_hash_table_insert(output,
  49                         g_strdup(entry.first.c_str()),
  50                         g_strdup(entry.second.c_str()));
  51     return output;
  52 }
  53
  54 Error::Error(int result) : result(result)
  55 {
  56 }
  57
  58 const char *Error::what() const throw()
  59 {
  60         return sr_strerror(result);
  61 }
  62
  63 Error::~Error() throw()
  64 {
  65 }
  66
  67 shared_ptr<Context> Context::create()
  68 {
  69         return shared_ptr<Context>(new Context(), Context::Deleter());
  70 }
  71
  72 Context::Context() :
  73         session(NULL)
  74 {
  75         check(sr_init(&structure));
  76         struct sr_dev_driver **driver_list = sr_driver_list();
  77         if (driver_list)
  78                 for (int i = 0; driver_list[i]; i++)
  79                         drivers[driver_list[i]->name] =
  80                                 new Driver(driver_list[i]);
  81         struct sr_input_format **input_list = sr_input_list();
  82         if (input_list)
  83                 for (int i = 0; input_list[i]; i++)
  84                         input_formats[input_list[i]->id] =
  85                                 new InputFormat(input_list[i]);
  86         struct sr_output_format **output_list = sr_output_list();
  87         if (output_list)
  88                 for (int i = 0; output_list[i]; i++)
  89                         output_formats[output_list[i]->id] =
  90                                 new OutputFormat(output_list[i]);
  91 }
  92
  93 string Context::get_package_version()
  94 {
  95         return sr_package_version_string_get();
  96 }
  97
  98 string Context::get_lib_version()
  99 {
 100         return sr_lib_version_string_get();
 101 }
 102
 103 map<string, shared_ptr<Driver>> Context::get_drivers()
 104 {
 105         map<string, shared_ptr<Driver>> result;
 106         for (auto entry: drivers)
 107         {
 108                 auto name = entry.first;
 109                 auto driver = entry.second;
 110                 result[name] = static_pointer_cast<Driver>(
 111                         driver->get_shared_pointer(this));
 112         }
 113         return result;
 114 }
 115
 116 map<string, shared_ptr<InputFormat>> Context::get_input_formats()
 117 {
 118         map<string, shared_ptr<InputFormat>> result;
 119         for (auto entry: input_formats)
 120         {
 121                 auto name = entry.first;
 122                 auto input_format = entry.second;
 123                 result[name] = static_pointer_cast<InputFormat>(
 124                         input_format->get_shared_pointer(this));
 125         }
 126         return result;
 127 }
 128
 129 map<string, shared_ptr<OutputFormat>> Context::get_output_formats()
 130 {
 131         map<string, shared_ptr<OutputFormat>> result;
 132         for (auto entry: output_formats)
 133         {
 134                 auto name = entry.first;
 135                 auto output_format = entry.second;
 136                 result[name] = static_pointer_cast<OutputFormat>(
 137                         output_format->get_shared_pointer(this));
 138         }
 139         return result;
 140 }
 141
 142 Context::~Context()
 143 {
 144         for (auto entry : drivers)
 145                 delete entry.second;
 146         for (auto entry : input_formats)
 147                 delete entry.second;
 148         for (auto entry : output_formats)
 149                 delete entry.second;
 150         check(sr_exit(structure));
 151 }
 152
 153 const LogLevel *Context::get_log_level()
 154 {
 155         return LogLevel::get(sr_log_loglevel_get());
 156 }
 157
 158 void Context::set_log_level(const LogLevel *level)
 159 {
 160         check(sr_log_loglevel_set(level->get_id()));
 161 }
 162
 163 string Context::get_log_domain()
 164 {
 165         return valid_string(sr_log_logdomain_get());
 166 }
 167
 168 void Context::set_log_domain(string value)
 169 {
 170         check(sr_log_logdomain_set(value.c_str()));
 171 }
 172
 173 static int call_log_callback(void *cb_data, int loglevel, const char *format, va_list args)
 174 {
 175         va_list args_copy;
 176         va_copy(args_copy, args);
 177         int length = vsnprintf(NULL, 0, format, args_copy);
 178         va_end(args_copy);
 179         char *buf = (char *) g_malloc(length + 1);
 180         vsprintf(buf, format, args);
 181         string message(buf, length);
 182         g_free(buf);
 183
 184         LogCallbackFunction callback = *((LogCallbackFunction *) cb_data);
 185
 186         try
 187         {
 188                 callback(LogLevel::get(loglevel), message);
 189         }
 190         catch (Error e)
 191         {
 192                 return e.result;
 193         }
 194
 195         return SR_OK;
 196 }
 197
 198 void Context::set_log_callback(LogCallbackFunction callback)
 199 {
 200         log_callback = callback;
 201         check(sr_log_callback_set(call_log_callback, &log_callback));
 202 }
 203
 204 void Context::set_log_callback_default()
 205 {
 206         check(sr_log_callback_set_default());
 207         log_callback = nullptr;
 208 }
 209
 210 shared_ptr<Session> Context::create_session()
 211 {
 212         return shared_ptr<Session>(
 213                 new Session(shared_from_this()), Session::Deleter());
 214 }
 215
 216 shared_ptr<Session> Context::load_session(string filename)
 217 {
 218         return shared_ptr<Session>(
 219                 new Session(shared_from_this(), filename), Session::Deleter());
 220 }
 221
 222 shared_ptr<Trigger> Context::create_trigger(string name)
 223 {
 224         return shared_ptr<Trigger>(
 225                 new Trigger(shared_from_this(), name), Trigger::Deleter());
 226 }
 227
 228 Driver::Driver(struct sr_dev_driver *structure) :
 229         StructureWrapper<Context, struct sr_dev_driver>(structure),
 230         initialized(false)
 231 {
 232 }
 233
 234 Driver::~Driver()
 235 {
 236         for (auto device : devices)
 237                 delete device;
 238 }
 239
 240 string Driver::get_name()
 241 {
 242         return valid_string(structure->name);
 243 }
 244
 245 string Driver::get_long_name()
 246 {
 247         return valid_string(structure->longname);
 248 }
 249
 250 vector<shared_ptr<HardwareDevice>> Driver::scan(
 251         map<const ConfigKey *, Glib::VariantBase> options)
 252 {
 253         /* Initialise the driver if not yet done. */
 254         if (!initialized)
 255         {
 256                 check(sr_driver_init(parent->structure, structure));
 257                 initialized = true;
 258         }
 259
 260         /* Clear all existing instances. */
 261         for (auto device : devices)
 262                 delete device;
 263         devices.clear();
 264
 265         /* Translate scan options to GSList of struct sr_config pointers. */
 266         GSList *option_list = NULL;
 267         for (auto entry : options)
 268         {
 269                 auto key = entry.first;
 270                 auto value = entry.second;
 271                 auto config = g_new(struct sr_config, 1);
 272                 config->key = key->get_id();
 273                 config->data = value.gobj();
 274                 option_list = g_slist_append(option_list, config);
 275         }
 276
 277         /* Run scan. */
 278         GSList *device_list = sr_driver_scan(structure, option_list);
 279
 280         /* Free option list. */
 281         g_slist_free_full(option_list, g_free);
 282
 283         /* Create device objects. */
 284         for (GSList *device = device_list; device; device = device->next)
 285         {
 286                 auto sdi = (struct sr_dev_inst *) device->data;
 287                 devices.push_back(new HardwareDevice(this, sdi));
 288         }
 289
 290         /* Free GSList returned from scan. */
 291         g_slist_free(device_list);
 292
 293         /* Create list of shared pointers to device instances for return. */
 294         vector<shared_ptr<HardwareDevice>> result;
 295         for (auto device : devices)
 296                 result.push_back(static_pointer_cast<HardwareDevice>(
 297                         device->get_shared_pointer(parent)));
 298         return result;
 299 }
 300
 301 Configurable::Configurable(
 302                 struct sr_dev_driver *driver,
 303                 struct sr_dev_inst *sdi,
 304                 struct sr_channel_group *cg) :
 305         config_driver(driver),
 306         config_sdi(sdi),
 307         config_channel_group(cg)
 308 {
 309 }
 310
 311 Configurable::~Configurable()
 312 {
 313 }
 314
 315 Glib::VariantBase Configurable::config_get(const ConfigKey *key)
 316 {
 317         GVariant *data;
 318         check(sr_config_get(
 319                 config_driver, config_sdi, config_channel_group,
 320                 key->get_id(), &data));
 321         return Glib::VariantBase(data);
 322 }
 323
 324 void Configurable::config_set(const ConfigKey *key, Glib::VariantBase value)
 325 {
 326         check(sr_config_set(
 327                 config_sdi, config_channel_group,
 328                 key->get_id(), value.gobj()));
 329 }
 330
 331 Glib::VariantBase Configurable::config_list(const ConfigKey *key)
 332 {
 333         GVariant *data;
 334         check(sr_config_list(
 335                 config_driver, config_sdi, config_channel_group,
 336                 key->get_id(), &data));
 337         return Glib::VariantBase(data);
 338 }
 339
 340 Device::Device(struct sr_dev_inst *structure) :
 341         Configurable(structure->driver, structure, NULL),
 342         StructureWrapper<Context, struct sr_dev_inst>(structure)
 343 {
 344         for (GSList *entry = structure->channels; entry; entry = entry->next)
 345         {
 346                 auto channel = (struct sr_channel *) entry->data;
 347                 channels[channel] = new Channel(channel);
 348         }
 349 }
 350
 351 Device::~Device()
 352 {
 353         for (auto entry : channels)
 354                 delete entry.second;
 355 }
 356
 357 string Device::get_vendor()
 358 {
 359         return valid_string(structure->vendor);
 360 }
 361
 362 string Device::get_model()
 363 {
 364         return valid_string(structure->model);
 365 }
 366
 367 string Device::get_version()
 368 {
 369         return valid_string(structure->version);
 370 }
 371
 372 vector<shared_ptr<Channel>> Device::get_channels()
 373 {
 374         vector<shared_ptr<Channel>> result;
 375         for (auto entry : channels)
 376                 result.push_back(static_pointer_cast<Channel>(
 377                         entry.second->get_shared_pointer(this)));
 378         return result;
 379 }
 380
 381 shared_ptr<Channel> Device::get_channel(struct sr_channel *ptr)
 382 {
 383         return static_pointer_cast<Channel>(
 384                 channels[ptr]->get_shared_pointer(this));
 385 }
 386
 387 void Device::open()
 388 {
 389         check(sr_dev_open(structure));
 390 }
 391
 392 void Device::close()
 393 {
 394         check(sr_dev_close(structure));
 395 }
 396
 397 HardwareDevice::HardwareDevice(Driver *driver, struct sr_dev_inst *structure) :
 398         Device(structure),
 399         driver(driver)
 400 {
 401         for (GSList *entry = structure->channel_groups; entry; entry = entry->next)
 402         {
 403                 auto group = (struct sr_channel_group *) entry->data;
 404                 channel_groups[group->name] = new ChannelGroup(this, group);
 405         }
 406 }
 407
 408 HardwareDevice::~HardwareDevice()
 409 {
 410         for (auto entry : channel_groups)
 411                 delete entry.second;
 412 }
 413
 414 shared_ptr<Driver> HardwareDevice::get_driver()
 415 {
 416         return static_pointer_cast<Driver>(driver->get_shared_pointer(parent));
 417 }
 418
 419 map<string, shared_ptr<ChannelGroup>>
 420 HardwareDevice::get_channel_groups()
 421 {
 422         map<string, shared_ptr<ChannelGroup>> result;
 423         for (auto entry: channel_groups)
 424         {
 425                 auto name = entry.first;
 426                 auto channel_group = entry.second;
 427                 result[name] = static_pointer_cast<ChannelGroup>(
 428                         channel_group->get_shared_pointer(this));
 429         }
 430         return result;
 431 }
 432
 433 Channel::Channel(struct sr_channel *structure) :
 434         StructureWrapper<Device, struct sr_channel>(structure),
 435         type(ChannelType::get(structure->type))
 436 {
 437 }
 438
 439 Channel::~Channel()
 440 {
 441 }
 442
 443 string Channel::get_name()
 444 {
 445         return valid_string(structure->name);
 446 }
 447
 448 void Channel::set_name(string name)
 449 {
 450         check(sr_dev_channel_name_set(parent->structure, structure->index, name.c_str()));
 451 }
 452
 453 const ChannelType *Channel::get_type()
 454 {
 455         return ChannelType::get(structure->type);
 456 }
 457
 458 bool Channel::get_enabled()
 459 {
 460         return structure->enabled;
 461 }
 462
 463 void Channel::set_enabled(bool value)
 464 {
 465         check(sr_dev_channel_enable(parent->structure, structure->index, value));
 466 }
 467
 468 ChannelGroup::ChannelGroup(HardwareDevice *device,
 469                 struct sr_channel_group *structure) :
 470         StructureWrapper<HardwareDevice, struct sr_channel_group>(structure),
 471         Configurable(device->structure->driver, device->structure, structure)
 472 {
 473         for (GSList *entry = structure->channels; entry; entry = entry->next)
 474                 channels.push_back(device->channels[(struct sr_channel *)entry->data]);
 475 }
 476
 477 ChannelGroup::~ChannelGroup()
 478 {
 479 }
 480
 481 string ChannelGroup::get_name()
 482 {
 483         return valid_string(structure->name);
 484 }
 485
 486 vector<shared_ptr<Channel>> ChannelGroup::get_channels()
 487 {
 488         vector<shared_ptr<Channel>> result;
 489         for (auto channel : channels)
 490                 result.push_back(static_pointer_cast<Channel>(
 491                         channel->get_shared_pointer(parent)));
 492         return result;
 493 }
 494
 495 Trigger::Trigger(shared_ptr<Context> context, string name) :
 496         structure(sr_trigger_new(name.c_str())), context(context)
 497 {
 498         for (auto stage = structure->stages; stage; stage = stage->next)
 499                 stages.push_back(new TriggerStage((struct sr_trigger_stage *) stage->data));
 500 }
 501
 502 Trigger::~Trigger()
 503 {
 504         for (auto stage: stages)
 505                 delete stage;
 506
 507         sr_trigger_free(structure);
 508 }
 509
 510 string Trigger::get_name()
 511 {
 512         return structure->name;
 513 }
 514
 515 vector<shared_ptr<TriggerStage>> Trigger::get_stages()
 516 {
 517         vector<shared_ptr<TriggerStage>> result;
 518         for (auto stage : stages)
 519                 result.push_back(static_pointer_cast<TriggerStage>(
 520                         stage->get_shared_pointer(this)));
 521         return result;
 522 }
 523
 524 shared_ptr<TriggerStage> Trigger::add_stage()
 525 {
 526         auto stage = new TriggerStage(sr_trigger_stage_add(structure));
 527         stages.push_back(stage);
 528         return static_pointer_cast<TriggerStage>(
 529                 stage->get_shared_pointer(this));
 530 }
 531
 532 TriggerStage::TriggerStage(struct sr_trigger_stage *structure) :
 533         StructureWrapper<Trigger, struct sr_trigger_stage>(structure)
 534 {
 535 }
 536
 537 TriggerStage::~TriggerStage()
 538 {
 539         for (auto match : matches)
 540                 delete match;
 541 }
 542
 543 int TriggerStage::get_number()
 544 {
 545         return structure->stage;
 546 }
 547
 548 vector<shared_ptr<TriggerMatch>> TriggerStage::get_matches()
 549 {
 550         vector<shared_ptr<TriggerMatch>> result;
 551         for (auto match : matches)
 552                 result.push_back(static_pointer_cast<TriggerMatch>(
 553                         match->get_shared_pointer(this)));
 554         return result;
 555 }
 556
 557 void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type, float value)
 558 {
 559         check(sr_trigger_match_add(structure, channel->structure, type->get_id(), value));
 560         matches.push_back(new TriggerMatch(
 561                 (struct sr_trigger_match *) g_slist_last(structure->matches)->data, channel));
 562 }
 563
 564 void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type)
 565 {
 566         add_match(channel, type, NAN);
 567 }
 568
 569 TriggerMatch::TriggerMatch(struct sr_trigger_match *structure, shared_ptr<Channel> channel) :
 570         StructureWrapper<TriggerStage, struct sr_trigger_match>(structure), channel(channel)
 571 {
 572 }
 573
 574 TriggerMatch::~TriggerMatch()
 575 {
 576 }
 577
 578 shared_ptr<Channel> TriggerMatch::get_channel()
 579 {
 580         return channel;
 581 }
 582
 583 const TriggerMatchType *TriggerMatch::get_type()
 584 {
 585         return TriggerMatchType::get(structure->match);
 586 }
 587
 588 float TriggerMatch::get_value()
 589 {
 590         return structure->value;
 591 }
 592
 593 DatafeedCallbackData::DatafeedCallbackData(Session *session,
 594                 DatafeedCallbackFunction callback) :
 595         callback(callback), session(session)
 596 {
 597 }
 598
 599 void DatafeedCallbackData::run(const struct sr_dev_inst *sdi,
 600         const struct sr_datafeed_packet *pkt)
 601 {
 602         auto device = session->devices[sdi];
 603         auto packet = shared_ptr<Packet>(new Packet(pkt), Packet::Deleter());
 604         callback(device, packet);
 605 }
 606
 607 SourceCallbackData::SourceCallbackData(shared_ptr<EventSource> source) :
 608         source(source)
 609 {
 610 }
 611
 612 bool SourceCallbackData::run(int revents)
 613 {
 614         return source->callback((Glib::IOCondition) revents);
 615 }
 616
 617 shared_ptr<EventSource> EventSource::create(int fd, Glib::IOCondition events,
 618         int timeout, SourceCallbackFunction callback)
 619 {
 620         auto result = new EventSource(timeout, callback);
 621         result->type = EventSource::SOURCE_FD;
 622         result->fd = fd;
 623         result->events = events;
 624         return shared_ptr<EventSource>(result, EventSource::Deleter());
 625 }
 626
 627 shared_ptr<EventSource> EventSource::create(Glib::PollFD pollfd, int timeout,
 628         SourceCallbackFunction callback)
 629 {
 630         auto result = new EventSource(timeout, callback);
 631         result->type = EventSource::SOURCE_POLLFD;
 632         result->pollfd = pollfd;
 633         return shared_ptr<EventSource>(result, EventSource::Deleter());
 634 }
 635
 636 shared_ptr<EventSource> EventSource::create(Glib::RefPtr<Glib::IOChannel> channel,
 637         Glib::IOCondition events, int timeout, SourceCallbackFunction callback)
 638 {
 639         auto result = new EventSource(timeout, callback);
 640         result->type = EventSource::SOURCE_IOCHANNEL;
 641         result->channel = channel;
 642         result->events = events;
 643         return shared_ptr<EventSource>(result, EventSource::Deleter());
 644 }
 645
 646 EventSource::EventSource(int timeout, SourceCallbackFunction callback) :
 647         timeout(timeout), callback(callback)
 648 {
 649 }
 650
 651 EventSource::~EventSource()
 652 {
 653 }
 654
 655 Session::Session(shared_ptr<Context> context) :
 656         context(context), saving(false)
 657 {
 658         check(sr_session_new(&structure));
 659         context->session = this;
 660 }
 661
 662 Session::Session(shared_ptr<Context> context, string filename) :
 663         context(context), saving(false)
 664 {
 665         check(sr_session_load(filename.c_str(), &structure));
 666         context->session = this;
 667 }
 668
 669 Session::~Session()
 670 {
 671         check(sr_session_destroy(structure));
 672
 673         for (auto callback : datafeed_callbacks)
 674                 delete callback;
 675
 676         for (auto entry : source_callbacks)
 677                 delete entry.second;
 678 }
 679
 680 void Session::add_device(shared_ptr<Device> device)
 681 {
 682         check(sr_session_dev_add(structure, device->structure));
 683         devices[device->structure] = device;
 684 }
 685
 686 vector<shared_ptr<Device>> Session::get_devices()
 687 {
 688         GSList *dev_list;
 689         check(sr_session_dev_list(structure, &dev_list));
 690         vector<shared_ptr<Device>> result;
 691         for (GSList *dev = dev_list; dev; dev = dev->next)
 692         {
 693                 auto sdi = (struct sr_dev_inst *) dev->data;
 694                 if (devices.count(sdi) == 0)
 695                         devices[sdi] = shared_ptr<Device>(
 696                                 new Device(sdi), Device::Deleter());
 697                 result.push_back(devices[sdi]);
 698         }
 699         return result;
 700 }
 701
 702 void Session::remove_devices()
 703 {
 704         devices.clear();
 705         check(sr_session_dev_remove_all(structure));
 706 }
 707
 708 void Session::start()
 709 {
 710         check(sr_session_start(structure));
 711 }
 712
 713 void Session::run()
 714 {
 715         check(sr_session_run(structure));
 716 }
 717
 718 void Session::stop()
 719 {
 720         check(sr_session_stop(structure));
 721 }
 722
 723 void Session::begin_save(string filename)
 724 {
 725         saving = true;
 726         save_initialized = false;
 727         save_filename = filename;
 728         save_samplerate = 0;
 729 }
 730
 731 void Session::append(shared_ptr<Device> device, shared_ptr<Packet> packet)
 732 {
 733         if (!saving)
 734                 throw Error(SR_ERR);
 735
 736         switch (packet->structure->type)
 737         {
 738                 case SR_DF_META:
 739                 {
 740                         auto meta = (const struct sr_datafeed_meta *)
 741                                 packet->structure->payload;
 742
 743                         for (auto l = meta->config; l; l = l->next)
 744                         {
 745                                 auto config = (struct sr_config *) l->data;
 746                                 if (config->key == SR_CONF_SAMPLERATE)
 747                                         save_samplerate = g_variant_get_uint64(config->data);
 748                         }
 749
 750                         break;
 751                 }
 752                 case SR_DF_LOGIC:
 753                 {
 754                         if (save_samplerate == 0)
 755                         {
 756                                 GVariant *samplerate;
 757
 758                                 check(sr_config_get(device->structure->driver,
 759                                         device->structure, NULL, SR_CONF_SAMPLERATE, &samplerate));
 760
 761                                 save_samplerate = g_variant_get_uint64(samplerate);
 762
 763                                 g_variant_unref(samplerate);
 764                         }
 765
 766                         if (!save_initialized)
 767                         {
 768                                 vector<shared_ptr<Channel>> save_channels;
 769
 770                                 for (auto channel : device->get_channels())
 771                                         if (channel->structure->enabled &&
 772                                                         channel->structure->type == SR_CHANNEL_LOGIC)
 773                                                 save_channels.push_back(channel);
 774
 775                                 auto channels = g_new(char *, save_channels.size());
 776
 777                                 int i = 0;
 778                                 for (auto channel : save_channels)
 779                                                 channels[i++] = channel->structure->name;
 780                                 channels[i] = NULL;
 781
 782                                 int ret = sr_session_save_init(structure, save_filename.c_str(),
 783                                                 save_samplerate, channels);
 784
 785                                 g_free(channels);
 786
 787                                 if (ret != SR_OK)
 788                                         throw Error(ret);
 789
 790                                 save_initialized = true;
 791                         }
 792
 793                         auto logic = (const struct sr_datafeed_logic *)
 794                                 packet->structure->payload;
 795
 796                         check(sr_session_append(structure, save_filename.c_str(),
 797                                 (uint8_t *) logic->data, logic->unitsize,
 798                                 logic->length / logic->unitsize));
 799                 }
 800         }
 801 }
 802
 803 static void datafeed_callback(const struct sr_dev_inst *sdi,
 804         const struct sr_datafeed_packet *pkt, void *cb_data)
 805 {
 806         auto callback = static_cast<DatafeedCallbackData *>(cb_data);
 807         callback->run(sdi, pkt);
 808 }
 809
 810 void Session::add_datafeed_callback(DatafeedCallbackFunction callback)
 811 {
 812         auto cb_data = new DatafeedCallbackData(this, callback);
 813         check(sr_session_datafeed_callback_add(structure, datafeed_callback, cb_data));
 814         datafeed_callbacks.push_back(cb_data);
 815 }
 816
 817 void Session::remove_datafeed_callbacks(void)
 818 {
 819         check(sr_session_datafeed_callback_remove_all(structure));
 820         for (auto callback : datafeed_callbacks)
 821                 delete callback;
 822         datafeed_callbacks.clear();
 823 }
 824
 825 static int source_callback(int fd, int revents, void *cb_data)
 826 {
 827         (void) fd;
 828         auto callback = (SourceCallbackData *) cb_data;
 829         return callback->run(revents);
 830 }
 831
 832 void Session::add_source(shared_ptr<EventSource> source)
 833 {
 834         if (source_callbacks.count(source) == 1)
 835                 throw Error(SR_ERR_ARG);
 836
 837         auto cb_data = new SourceCallbackData(source);
 838
 839         switch (source->type)
 840         {
 841                 case EventSource::SOURCE_FD:
 842                         check(sr_session_source_add(structure, source->fd, source->events,
 843                                 source->timeout, source_callback, cb_data));
 844                         break;
 845                 case EventSource::SOURCE_POLLFD:
 846                         check(sr_session_source_add_pollfd(structure,
 847                                 source->pollfd.gobj(), source->timeout, source_callback,
 848                                 cb_data));
 849                         break;
 850                 case EventSource::SOURCE_IOCHANNEL:
 851                         check(sr_session_source_add_channel(structure,
 852                                 source->channel->gobj(), source->events, source->timeout,
 853                                 source_callback, cb_data));
 854                         break;
 855         }
 856
 857         source_callbacks[source] = cb_data;
 858 }
 859
 860 void Session::remove_source(shared_ptr<EventSource> source)
 861 {
 862         if (source_callbacks.count(source) == 0)
 863                 throw Error(SR_ERR_ARG);
 864
 865         switch (source->type)
 866         {
 867                 case EventSource::SOURCE_FD:
 868                         check(sr_session_source_remove(structure, source->fd));
 869                         break;
 870                 case EventSource::SOURCE_POLLFD:
 871                         check(sr_session_source_remove_pollfd(structure,
 872                                 source->pollfd.gobj()));
 873                         break;
 874                 case EventSource::SOURCE_IOCHANNEL:
 875                         check(sr_session_source_remove_channel(structure,
 876                                 source->channel->gobj()));
 877                         break;
 878         }
 879
 880         delete source_callbacks[source];
 881
 882         source_callbacks.erase(source);
 883 }
 884
 885 shared_ptr<Trigger> Session::get_trigger()
 886 {
 887         return trigger;
 888 }
 889
 890 void Session::set_trigger(shared_ptr<Trigger> trigger)
 891 {
 892         check(sr_session_trigger_set(structure, trigger->structure));
 893         this->trigger = trigger;
 894 }
 895
 896 Packet::Packet(const struct sr_datafeed_packet *structure) :
 897         structure(structure)
 898 {
 899         switch (structure->type)
 900         {
 901                 case SR_DF_LOGIC:
 902                         payload = new Logic(
 903                                 static_cast<const struct sr_datafeed_logic *>(
 904                                         structure->payload));
 905                         break;
 906                 case SR_DF_ANALOG:
 907                         payload = new Analog(
 908                                 static_cast<const struct sr_datafeed_analog *>(
 909                                         structure->payload));
 910                         break;
 911                 default:
 912                         payload = NULL;
 913                         break;
 914         }
 915 }
 916
 917 Packet::~Packet()
 918 {
 919         delete payload;
 920 }
 921
 922 const PacketType *Packet::get_type()
 923 {
 924         return PacketType::get(structure->type);
 925 }
 926
 927 PacketPayload *Packet::get_payload()
 928 {
 929         return payload;
 930 }
 931
 932 PacketPayload::PacketPayload()
 933 {
 934 }
 935
 936 PacketPayload::~PacketPayload()
 937 {
 938 }
 939
 940 Logic::Logic(const struct sr_datafeed_logic *structure) : PacketPayload(),
 941         structure(structure),
 942         data(static_cast<uint8_t *>(structure->data),
 943                 static_cast<uint8_t *>(structure->data) + structure->length) {}
 944
 945 Logic::~Logic()
 946 {
 947 }
 948
 949 void *Logic::get_data()
 950 {
 951         return structure->data;
 952 }
 953
 954 size_t Logic::get_data_size()
 955 {
 956         return structure->length;
 957 }
 958
 959 Analog::Analog(const struct sr_datafeed_analog *structure) :
 960         PacketPayload(),
 961         structure(structure)
 962 {
 963 }
 964
 965 Analog::~Analog()
 966 {
 967 }
 968
 969 void *Analog::get_data()
 970 {
 971         return structure->data;
 972 }
 973
 974 size_t Analog::get_data_size()
 975 {
 976         return structure->num_samples * sizeof(float);
 977 }
 978
 979 unsigned int Analog::get_num_samples()
 980 {
 981         return structure->num_samples;
 982 }
 983
 984 const Quantity *Analog::get_mq()
 985 {
 986         return Quantity::get(structure->mq);
 987 }
 988
 989 const Unit *Analog::get_unit()
 990 {
 991         return Unit::get(structure->unit);
 992 }
 993
 994 vector<const QuantityFlag *> Analog::get_mq_flags()
 995 {
 996         return QuantityFlag::flags_from_mask(structure->mqflags);
 997 }
 998
 999 InputFormat::InputFormat(struct sr_input_format *structure) :
1000         StructureWrapper<Context, struct sr_input_format>(structure)
1001 {
1002 }
1003
1004 InputFormat::~InputFormat()
1005 {
1006 }
1007
1008 string InputFormat::get_name()
1009 {
1010         return valid_string(structure->id);
1011 }
1012
1013 string InputFormat::get_description()
1014 {
1015         return valid_string(structure->description);
1016 }
1017
1018 bool InputFormat::format_match(string filename)
1019 {
1020         return structure->format_match(filename.c_str());
1021 }
1022
1023 shared_ptr<InputFileDevice> InputFormat::open_file(string filename,
1024                 map<string, string> options)
1025 {
1026         auto input = g_new(struct sr_input, 1);
1027         input->param = map_to_hash(options);
1028
1029         /** Run initialisation. */
1030         check(structure->init(input, filename.c_str()));
1031
1032         /** Create virtual device. */
1033         return shared_ptr<InputFileDevice>(new InputFileDevice(
1034                 static_pointer_cast<InputFormat>(shared_from_this()), input, filename),
1035                 InputFileDevice::Deleter());
1036 }
1037
1038 InputFileDevice::InputFileDevice(shared_ptr<InputFormat> format,
1039                 struct sr_input *input, string filename) :
1040         Device(input->sdi),
1041         input(input),
1042         format(format),
1043         filename(filename)
1044 {
1045 }
1046
1047 InputFileDevice::~InputFileDevice()
1048 {
1049         g_hash_table_unref(input->param);
1050         g_free(input);
1051 }
1052
1053 void InputFileDevice::load()
1054 {
1055         check(format->structure->loadfile(input, filename.c_str()));
1056 }
1057
1058 OutputFormat::OutputFormat(struct sr_output_format *structure) :
1059         StructureWrapper<Context, struct sr_output_format>(structure)
1060 {
1061 }
1062
1063 OutputFormat::~OutputFormat()
1064 {
1065 }
1066
1067 string OutputFormat::get_name()
1068 {
1069         return valid_string(structure->id);
1070 }
1071
1072 string OutputFormat::get_description()
1073 {
1074         return valid_string(structure->description);
1075 }
1076
1077 shared_ptr<Output> OutputFormat::create_output(
1078         shared_ptr<Device> device, map<string, string> options)
1079 {
1080         return shared_ptr<Output>(
1081                 new Output(
1082                         static_pointer_cast<OutputFormat>(shared_from_this()),
1083                                 device, options),
1084                 Output::Deleter());
1085 }
1086
1087 Output::Output(shared_ptr<OutputFormat> format,
1088                 shared_ptr<Device> device, map<string, string> options) :
1089         structure(sr_output_new(format->structure,
1090                 map_to_hash(options), device->structure)),
1091         format(format), device(device), options(options)
1092 {
1093 }
1094
1095 Output::~Output()
1096 {
1097         g_hash_table_unref(structure->params);
1098         check(sr_output_free(structure));
1099 }
1100
1101 string Output::receive(shared_ptr<Packet> packet)
1102 {
1103         GString *out;
1104         check(sr_output_send(structure, packet->structure, &out));
1105         if (out)
1106         {
1107                 auto result = string(out->str, out->str + out->len);
1108                 g_string_free(out, true);
1109                 return result;
1110         }
1111         else
1112         {
1113                 return string();
1114         }
1115 }
1116
1117 #include "enums.cpp"
1118
1119 }