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 #include <sstream>
  23
  24 namespace sigrok
  25 {
  26
  27 /** Helper function to translate C errors to C++ exceptions. */
  28 static void check(int result)
  29 {
  30         if (result != SR_OK)
  31                 throw Error(result);
  32 }
  33
  34 /** Helper function to obtain valid strings from possibly null input. */
  35 static const char *valid_string(const char *input)
  36 {
  37         if (input != NULL)
  38                 return input;
  39         else
  40                 return "";
  41 }
  42
  43 /** Helper function to convert between map<string, string> and GHashTable */
  44
  45 static GHashTable *map_to_hash(map<string, string> input)
  46 {
  47         auto output = g_hash_table_new_full(
  48                 g_str_hash, g_str_equal, g_free, g_free);
  49         for (auto entry : input)
  50                 g_hash_table_insert(output,
  51                         g_strdup(entry.first.c_str()),
  52                         g_strdup(entry.second.c_str()));
  53     return output;
  54 }
  55
  56 Error::Error(int result) : result(result)
  57 {
  58 }
  59
  60 const char *Error::what() const throw()
  61 {
  62         return sr_strerror(result);
  63 }
  64
  65 Error::~Error() throw()
  66 {
  67 }
  68
  69 shared_ptr<Context> Context::create()
  70 {
  71         return shared_ptr<Context>(new Context(), Context::Deleter());
  72 }
  73
  74 Context::Context() :
  75         session(NULL)
  76 {
  77         check(sr_init(&structure));
  78         struct sr_dev_driver **driver_list = sr_driver_list();
  79         if (driver_list)
  80                 for (int i = 0; driver_list[i]; i++)
  81                         drivers[driver_list[i]->name] =
  82                                 new Driver(driver_list[i]);
  83         struct sr_input_format **input_list = sr_input_list();
  84         if (input_list)
  85                 for (int i = 0; input_list[i]; i++)
  86                         input_formats[input_list[i]->id] =
  87                                 new InputFormat(input_list[i]);
  88         struct sr_output_format **output_list = sr_output_list();
  89         if (output_list)
  90                 for (int i = 0; output_list[i]; i++)
  91                         output_formats[output_list[i]->id] =
  92                                 new OutputFormat(output_list[i]);
  93 }
  94
  95 string Context::get_package_version()
  96 {
  97         return sr_package_version_string_get();
  98 }
  99
 100 string Context::get_lib_version()
 101 {
 102         return sr_lib_version_string_get();
 103 }
 104
 105 map<string, shared_ptr<Driver>> Context::get_drivers()
 106 {
 107         map<string, shared_ptr<Driver>> result;
 108         for (auto entry: drivers)
 109         {
 110                 auto name = entry.first;
 111                 auto driver = entry.second;
 112                 result[name] = static_pointer_cast<Driver>(
 113                         driver->get_shared_pointer(this));
 114         }
 115         return result;
 116 }
 117
 118 map<string, shared_ptr<InputFormat>> Context::get_input_formats()
 119 {
 120         map<string, shared_ptr<InputFormat>> result;
 121         for (auto entry: input_formats)
 122         {
 123                 auto name = entry.first;
 124                 auto input_format = entry.second;
 125                 result[name] = static_pointer_cast<InputFormat>(
 126                         input_format->get_shared_pointer(this));
 127         }
 128         return result;
 129 }
 130
 131 map<string, shared_ptr<OutputFormat>> Context::get_output_formats()
 132 {
 133         map<string, shared_ptr<OutputFormat>> result;
 134         for (auto entry: output_formats)
 135         {
 136                 auto name = entry.first;
 137                 auto output_format = entry.second;
 138                 result[name] = static_pointer_cast<OutputFormat>(
 139                         output_format->get_shared_pointer(this));
 140         }
 141         return result;
 142 }
 143
 144 Context::~Context()
 145 {
 146         for (auto entry : drivers)
 147                 delete entry.second;
 148         for (auto entry : input_formats)
 149                 delete entry.second;
 150         for (auto entry : output_formats)
 151                 delete entry.second;
 152         check(sr_exit(structure));
 153 }
 154
 155 const LogLevel *Context::get_log_level()
 156 {
 157         return LogLevel::get(sr_log_loglevel_get());
 158 }
 159
 160 void Context::set_log_level(const LogLevel *level)
 161 {
 162         check(sr_log_loglevel_set(level->get_id()));
 163 }
 164
 165 string Context::get_log_domain()
 166 {
 167         return valid_string(sr_log_logdomain_get());
 168 }
 169
 170 void Context::set_log_domain(string value)
 171 {
 172         check(sr_log_logdomain_set(value.c_str()));
 173 }
 174
 175 static int call_log_callback(void *cb_data, int loglevel, const char *format, va_list args)
 176 {
 177         va_list args_copy;
 178         va_copy(args_copy, args);
 179         int length = vsnprintf(NULL, 0, format, args_copy);
 180         va_end(args_copy);
 181         char *buf = (char *) g_malloc(length + 1);
 182         vsprintf(buf, format, args);
 183         string message(buf, length);
 184         g_free(buf);
 185
 186         LogCallbackFunction callback = *((LogCallbackFunction *) cb_data);
 187
 188         try
 189         {
 190                 callback(LogLevel::get(loglevel), message);
 191         }
 192         catch (Error e)
 193         {
 194                 return e.result;
 195         }
 196
 197         return SR_OK;
 198 }
 199
 200 void Context::set_log_callback(LogCallbackFunction callback)
 201 {
 202         log_callback = callback;
 203         check(sr_log_callback_set(call_log_callback, &log_callback));
 204 }
 205
 206 void Context::set_log_callback_default()
 207 {
 208         check(sr_log_callback_set_default());
 209         log_callback = nullptr;
 210 }
 211
 212 shared_ptr<Session> Context::create_session()
 213 {
 214         return shared_ptr<Session>(
 215                 new Session(shared_from_this()), Session::Deleter());
 216 }
 217
 218 shared_ptr<Session> Context::load_session(string filename)
 219 {
 220         return shared_ptr<Session>(
 221                 new Session(shared_from_this(), filename), Session::Deleter());
 222 }
 223
 224 shared_ptr<Trigger> Context::create_trigger(string name)
 225 {
 226         return shared_ptr<Trigger>(
 227                 new Trigger(shared_from_this(), name), Trigger::Deleter());
 228 }
 229
 230 Driver::Driver(struct sr_dev_driver *structure) :
 231         StructureWrapper<Context, struct sr_dev_driver>(structure),
 232         initialized(false)
 233 {
 234 }
 235
 236 Driver::~Driver()
 237 {
 238         for (auto device : devices)
 239                 delete device;
 240 }
 241
 242 string Driver::get_name()
 243 {
 244         return valid_string(structure->name);
 245 }
 246
 247 string Driver::get_long_name()
 248 {
 249         return valid_string(structure->longname);
 250 }
 251
 252 vector<shared_ptr<HardwareDevice>> Driver::scan(
 253         map<const ConfigKey *, Glib::VariantBase> options)
 254 {
 255         /* Initialise the driver if not yet done. */
 256         if (!initialized)
 257         {
 258                 check(sr_driver_init(parent->structure, structure));
 259                 initialized = true;
 260         }
 261
 262         /* Clear all existing instances. */
 263         for (auto device : devices)
 264                 delete device;
 265         devices.clear();
 266
 267         /* Translate scan options to GSList of struct sr_config pointers. */
 268         GSList *option_list = NULL;
 269         for (auto entry : options)
 270         {
 271                 auto key = entry.first;
 272                 auto value = entry.second;
 273                 auto config = g_new(struct sr_config, 1);
 274                 config->key = key->get_id();
 275                 config->data = value.gobj();
 276                 option_list = g_slist_append(option_list, config);
 277         }
 278
 279         /* Run scan. */
 280         GSList *device_list = sr_driver_scan(structure, option_list);
 281
 282         /* Free option list. */
 283         g_slist_free_full(option_list, g_free);
 284
 285         /* Create device objects. */
 286         for (GSList *device = device_list; device; device = device->next)
 287         {
 288                 auto sdi = (struct sr_dev_inst *) device->data;
 289                 devices.push_back(new HardwareDevice(this, sdi));
 290         }
 291
 292         /* Free GSList returned from scan. */
 293         g_slist_free(device_list);
 294
 295         /* Create list of shared pointers to device instances for return. */
 296         vector<shared_ptr<HardwareDevice>> result;
 297         for (auto device : devices)
 298                 result.push_back(static_pointer_cast<HardwareDevice>(
 299                         device->get_shared_pointer(parent)));
 300         return result;
 301 }
 302
 303 Configurable::Configurable(
 304                 struct sr_dev_driver *driver,
 305                 struct sr_dev_inst *sdi,
 306                 struct sr_channel_group *cg) :
 307         config_driver(driver),
 308         config_sdi(sdi),
 309         config_channel_group(cg)
 310 {
 311 }
 312
 313 Configurable::~Configurable()
 314 {
 315 }
 316
 317 Glib::VariantBase Configurable::config_get(const ConfigKey *key)
 318 {
 319         GVariant *data;
 320         check(sr_config_get(
 321                 config_driver, config_sdi, config_channel_group,
 322                 key->get_id(), &data));
 323         return Glib::VariantBase(data);
 324 }
 325
 326 void Configurable::config_set(const ConfigKey *key, Glib::VariantBase value)
 327 {
 328         check(sr_config_set(
 329                 config_sdi, config_channel_group,
 330                 key->get_id(), value.gobj()));
 331 }
 332
 333 Glib::VariantContainerBase Configurable::config_list(const ConfigKey *key)
 334 {
 335         GVariant *data;
 336         check(sr_config_list(
 337                 config_driver, config_sdi, config_channel_group,
 338                 key->get_id(), &data));
 339         return Glib::VariantContainerBase(data);
 340 }
 341
 342 Device::Device(struct sr_dev_inst *structure) :
 343         Configurable(structure->driver, structure, NULL),
 344         StructureWrapper<Context, struct sr_dev_inst>(structure)
 345 {
 346         for (GSList *entry = structure->channels; entry; entry = entry->next)
 347         {
 348                 auto channel = (struct sr_channel *) entry->data;
 349                 channels[channel] = new Channel(channel);
 350         }
 351
 352         for (GSList *entry = structure->channel_groups; entry; entry = entry->next)
 353         {
 354                 auto group = (struct sr_channel_group *) entry->data;
 355                 channel_groups[group->name] = new ChannelGroup(this, group);
 356         }
 357 }
 358
 359 Device::~Device()
 360 {
 361         for (auto entry : channels)
 362                 delete entry.second;
 363         for (auto entry : channel_groups)
 364                 delete entry.second;
 365 }
 366
 367 string Device::get_description()
 368 {
 369         ostringstream s;
 370
 371         vector<string> parts =
 372                 {get_vendor(), get_model(), get_version()};
 373
 374         for (string part : parts)
 375                 if (part.length() > 0)
 376                         s << part;
 377
 378         return s.str();
 379 }
 380
 381 string Device::get_vendor()
 382 {
 383         return valid_string(structure->vendor);
 384 }
 385
 386 string Device::get_model()
 387 {
 388         return valid_string(structure->model);
 389 }
 390
 391 string Device::get_version()
 392 {
 393         return valid_string(structure->version);
 394 }
 395
 396 vector<shared_ptr<Channel>> Device::get_channels()
 397 {
 398         vector<shared_ptr<Channel>> result;
 399         for (auto entry : channels)
 400                 result.push_back(static_pointer_cast<Channel>(
 401                         entry.second->get_shared_pointer(this)));
 402         return result;
 403 }
 404
 405 shared_ptr<Channel> Device::get_channel(struct sr_channel *ptr)
 406 {
 407         return static_pointer_cast<Channel>(
 408                 channels[ptr]->get_shared_pointer(this));
 409 }
 410
 411 map<string, shared_ptr<ChannelGroup>>
 412 Device::get_channel_groups()
 413 {
 414         map<string, shared_ptr<ChannelGroup>> result;
 415         for (auto entry: channel_groups)
 416         {
 417                 auto name = entry.first;
 418                 auto channel_group = entry.second;
 419                 result[name] = static_pointer_cast<ChannelGroup>(
 420                         channel_group->get_shared_pointer(this));
 421         }
 422         return result;
 423 }
 424
 425 void Device::open()
 426 {
 427         check(sr_dev_open(structure));
 428 }
 429
 430 void Device::close()
 431 {
 432         check(sr_dev_close(structure));
 433 }
 434
 435 HardwareDevice::HardwareDevice(Driver *driver, struct sr_dev_inst *structure) :
 436         Device(structure),
 437         driver(driver)
 438 {
 439 }
 440
 441 HardwareDevice::~HardwareDevice()
 442 {
 443 }
 444
 445 shared_ptr<Driver> HardwareDevice::get_driver()
 446 {
 447         return static_pointer_cast<Driver>(driver->get_shared_pointer(parent));
 448 }
 449
 450 Channel::Channel(struct sr_channel *structure) :
 451         StructureWrapper<Device, struct sr_channel>(structure),
 452         type(ChannelType::get(structure->type))
 453 {
 454 }
 455
 456 Channel::~Channel()
 457 {
 458 }
 459
 460 string Channel::get_name()
 461 {
 462         return valid_string(structure->name);
 463 }
 464
 465 void Channel::set_name(string name)
 466 {
 467         check(sr_dev_channel_name_set(parent->structure, structure->index, name.c_str()));
 468 }
 469
 470 const ChannelType *Channel::get_type()
 471 {
 472         return ChannelType::get(structure->type);
 473 }
 474
 475 bool Channel::get_enabled()
 476 {
 477         return structure->enabled;
 478 }
 479
 480 void Channel::set_enabled(bool value)
 481 {
 482         check(sr_dev_channel_enable(parent->structure, structure->index, value));
 483 }
 484
 485 ChannelGroup::ChannelGroup(Device *device,
 486                 struct sr_channel_group *structure) :
 487         StructureWrapper<Device, struct sr_channel_group>(structure),
 488         Configurable(device->structure->driver, device->structure, structure)
 489 {
 490         for (GSList *entry = structure->channels; entry; entry = entry->next)
 491                 channels.push_back(device->channels[(struct sr_channel *)entry->data]);
 492 }
 493
 494 ChannelGroup::~ChannelGroup()
 495 {
 496 }
 497
 498 string ChannelGroup::get_name()
 499 {
 500         return valid_string(structure->name);
 501 }
 502
 503 vector<shared_ptr<Channel>> ChannelGroup::get_channels()
 504 {
 505         vector<shared_ptr<Channel>> result;
 506         for (auto channel : channels)
 507                 result.push_back(static_pointer_cast<Channel>(
 508                         channel->get_shared_pointer(parent)));
 509         return result;
 510 }
 511
 512 Trigger::Trigger(shared_ptr<Context> context, string name) :
 513         structure(sr_trigger_new(name.c_str())), context(context)
 514 {
 515         for (auto stage = structure->stages; stage; stage = stage->next)
 516                 stages.push_back(new TriggerStage((struct sr_trigger_stage *) stage->data));
 517 }
 518
 519 Trigger::~Trigger()
 520 {
 521         for (auto stage: stages)
 522                 delete stage;
 523
 524         sr_trigger_free(structure);
 525 }
 526
 527 string Trigger::get_name()
 528 {
 529         return structure->name;
 530 }
 531
 532 vector<shared_ptr<TriggerStage>> Trigger::get_stages()
 533 {
 534         vector<shared_ptr<TriggerStage>> result;
 535         for (auto stage : stages)
 536                 result.push_back(static_pointer_cast<TriggerStage>(
 537                         stage->get_shared_pointer(this)));
 538         return result;
 539 }
 540
 541 shared_ptr<TriggerStage> Trigger::add_stage()
 542 {
 543         auto stage = new TriggerStage(sr_trigger_stage_add(structure));
 544         stages.push_back(stage);
 545         return static_pointer_cast<TriggerStage>(
 546                 stage->get_shared_pointer(this));
 547 }
 548
 549 TriggerStage::TriggerStage(struct sr_trigger_stage *structure) :
 550         StructureWrapper<Trigger, struct sr_trigger_stage>(structure)
 551 {
 552 }
 553
 554 TriggerStage::~TriggerStage()
 555 {
 556         for (auto match : matches)
 557                 delete match;
 558 }
 559
 560 int TriggerStage::get_number()
 561 {
 562         return structure->stage;
 563 }
 564
 565 vector<shared_ptr<TriggerMatch>> TriggerStage::get_matches()
 566 {
 567         vector<shared_ptr<TriggerMatch>> result;
 568         for (auto match : matches)
 569                 result.push_back(static_pointer_cast<TriggerMatch>(
 570                         match->get_shared_pointer(this)));
 571         return result;
 572 }
 573
 574 void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type, float value)
 575 {
 576         check(sr_trigger_match_add(structure, channel->structure, type->get_id(), value));
 577         matches.push_back(new TriggerMatch(
 578                 (struct sr_trigger_match *) g_slist_last(structure->matches)->data, channel));
 579 }
 580
 581 void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type)
 582 {
 583         add_match(channel, type, NAN);
 584 }
 585
 586 TriggerMatch::TriggerMatch(struct sr_trigger_match *structure, shared_ptr<Channel> channel) :
 587         StructureWrapper<TriggerStage, struct sr_trigger_match>(structure), channel(channel)
 588 {
 589 }
 590
 591 TriggerMatch::~TriggerMatch()
 592 {
 593 }
 594
 595 shared_ptr<Channel> TriggerMatch::get_channel()
 596 {
 597         return channel;
 598 }
 599
 600 const TriggerMatchType *TriggerMatch::get_type()
 601 {
 602         return TriggerMatchType::get(structure->match);
 603 }
 604
 605 float TriggerMatch::get_value()
 606 {
 607         return structure->value;
 608 }
 609
 610 DatafeedCallbackData::DatafeedCallbackData(Session *session,
 611                 DatafeedCallbackFunction callback) :
 612         callback(callback), session(session)
 613 {
 614 }
 615
 616 void DatafeedCallbackData::run(const struct sr_dev_inst *sdi,
 617         const struct sr_datafeed_packet *pkt)
 618 {
 619         auto device = session->devices[sdi];
 620         auto packet = shared_ptr<Packet>(new Packet(device, pkt), Packet::Deleter());
 621         callback(device, packet);
 622 }
 623
 624 SourceCallbackData::SourceCallbackData(shared_ptr<EventSource> source) :
 625         source(source)
 626 {
 627 }
 628
 629 bool SourceCallbackData::run(int revents)
 630 {
 631         return source->callback((Glib::IOCondition) revents);
 632 }
 633
 634 shared_ptr<EventSource> EventSource::create(int fd, Glib::IOCondition events,
 635         int timeout, SourceCallbackFunction callback)
 636 {
 637         auto result = new EventSource(timeout, callback);
 638         result->type = EventSource::SOURCE_FD;
 639         result->fd = fd;
 640         result->events = events;
 641         return shared_ptr<EventSource>(result, EventSource::Deleter());
 642 }
 643
 644 shared_ptr<EventSource> EventSource::create(Glib::PollFD pollfd, int timeout,
 645         SourceCallbackFunction callback)
 646 {
 647         auto result = new EventSource(timeout, callback);
 648         result->type = EventSource::SOURCE_POLLFD;
 649         result->pollfd = pollfd;
 650         return shared_ptr<EventSource>(result, EventSource::Deleter());
 651 }
 652
 653 shared_ptr<EventSource> EventSource::create(Glib::RefPtr<Glib::IOChannel> channel,
 654         Glib::IOCondition events, int timeout, SourceCallbackFunction callback)
 655 {
 656         auto result = new EventSource(timeout, callback);
 657         result->type = EventSource::SOURCE_IOCHANNEL;
 658         result->channel = channel;
 659         result->events = events;
 660         return shared_ptr<EventSource>(result, EventSource::Deleter());
 661 }
 662
 663 EventSource::EventSource(int timeout, SourceCallbackFunction callback) :
 664         timeout(timeout), callback(callback)
 665 {
 666 }
 667
 668 EventSource::~EventSource()
 669 {
 670 }
 671
 672 Session::Session(shared_ptr<Context> context) :
 673         context(context), saving(false)
 674 {
 675         check(sr_session_new(&structure));
 676         context->session = this;
 677 }
 678
 679 Session::Session(shared_ptr<Context> context, string filename) :
 680         context(context), saving(false)
 681 {
 682         check(sr_session_load(filename.c_str(), &structure));
 683         context->session = this;
 684 }
 685
 686 Session::~Session()
 687 {
 688         check(sr_session_destroy(structure));
 689
 690         for (auto callback : datafeed_callbacks)
 691                 delete callback;
 692
 693         for (auto entry : source_callbacks)
 694                 delete entry.second;
 695 }
 696
 697 void Session::add_device(shared_ptr<Device> device)
 698 {
 699         check(sr_session_dev_add(structure, device->structure));
 700         devices[device->structure] = device;
 701 }
 702
 703 vector<shared_ptr<Device>> Session::get_devices()
 704 {
 705         GSList *dev_list;
 706         check(sr_session_dev_list(structure, &dev_list));
 707         vector<shared_ptr<Device>> result;
 708         for (GSList *dev = dev_list; dev; dev = dev->next)
 709         {
 710                 auto sdi = (struct sr_dev_inst *) dev->data;
 711                 if (devices.count(sdi) == 0)
 712                         devices[sdi] = shared_ptr<Device>(
 713                                 new Device(sdi), Device::Deleter());
 714                 result.push_back(devices[sdi]);
 715         }
 716         return result;
 717 }
 718
 719 void Session::remove_devices()
 720 {
 721         devices.clear();
 722         check(sr_session_dev_remove_all(structure));
 723 }
 724
 725 void Session::start()
 726 {
 727         check(sr_session_start(structure));
 728 }
 729
 730 void Session::run()
 731 {
 732         check(sr_session_run(structure));
 733 }
 734
 735 void Session::stop()
 736 {
 737         check(sr_session_stop(structure));
 738 }
 739
 740 void Session::begin_save(string filename)
 741 {
 742         saving = true;
 743         save_initialized = false;
 744         save_filename = filename;
 745         save_samplerate = 0;
 746 }
 747
 748 void Session::append(shared_ptr<Packet> packet)
 749 {
 750         if (!saving)
 751                 throw Error(SR_ERR);
 752
 753         switch (packet->structure->type)
 754         {
 755                 case SR_DF_META:
 756                 {
 757                         auto meta = (const struct sr_datafeed_meta *)
 758                                 packet->structure->payload;
 759
 760                         for (auto l = meta->config; l; l = l->next)
 761                         {
 762                                 auto config = (struct sr_config *) l->data;
 763                                 if (config->key == SR_CONF_SAMPLERATE)
 764                                         save_samplerate = g_variant_get_uint64(config->data);
 765                         }
 766
 767                         break;
 768                 }
 769                 case SR_DF_LOGIC:
 770                 {
 771                         if (save_samplerate == 0)
 772                         {
 773                                 GVariant *samplerate;
 774
 775                                 check(sr_config_get(packet->device->structure->driver,
 776                                         packet->device->structure, NULL, SR_CONF_SAMPLERATE,
 777                                         &samplerate));
 778
 779                                 save_samplerate = g_variant_get_uint64(samplerate);
 780
 781                                 g_variant_unref(samplerate);
 782                         }
 783
 784                         if (!save_initialized)
 785                         {
 786                                 vector<shared_ptr<Channel>> save_channels;
 787
 788                                 for (auto channel : packet->device->get_channels())
 789                                         if (channel->structure->enabled &&
 790                                                         channel->structure->type == SR_CHANNEL_LOGIC)
 791                                                 save_channels.push_back(channel);
 792
 793                                 auto channels = g_new(char *, save_channels.size());
 794
 795                                 int i = 0;
 796                                 for (auto channel : save_channels)
 797                                                 channels[i++] = channel->structure->name;
 798                                 channels[i] = NULL;
 799
 800                                 int ret = sr_session_save_init(structure, save_filename.c_str(),
 801                                                 save_samplerate, channels);
 802
 803                                 g_free(channels);
 804
 805                                 if (ret != SR_OK)
 806                                         throw Error(ret);
 807
 808                                 save_initialized = true;
 809                         }
 810
 811                         auto logic = (const struct sr_datafeed_logic *)
 812                                 packet->structure->payload;
 813
 814                         check(sr_session_append(structure, save_filename.c_str(),
 815                                 (uint8_t *) logic->data, logic->unitsize,
 816                                 logic->length / logic->unitsize));
 817                 }
 818         }
 819 }
 820
 821 void Session::append(void *data, size_t length, unsigned int unit_size)
 822 {
 823         check(sr_session_append(structure, save_filename.c_str(),
 824                 (uint8_t *) data, unit_size, length));
 825 }
 826
 827 static void datafeed_callback(const struct sr_dev_inst *sdi,
 828         const struct sr_datafeed_packet *pkt, void *cb_data)
 829 {
 830         auto callback = static_cast<DatafeedCallbackData *>(cb_data);
 831         callback->run(sdi, pkt);
 832 }
 833
 834 void Session::add_datafeed_callback(DatafeedCallbackFunction callback)
 835 {
 836         auto cb_data = new DatafeedCallbackData(this, callback);
 837         check(sr_session_datafeed_callback_add(structure, datafeed_callback, cb_data));
 838         datafeed_callbacks.push_back(cb_data);
 839 }
 840
 841 void Session::remove_datafeed_callbacks(void)
 842 {
 843         check(sr_session_datafeed_callback_remove_all(structure));
 844         for (auto callback : datafeed_callbacks)
 845                 delete callback;
 846         datafeed_callbacks.clear();
 847 }
 848
 849 static int source_callback(int fd, int revents, void *cb_data)
 850 {
 851         (void) fd;
 852         auto callback = (SourceCallbackData *) cb_data;
 853         return callback->run(revents);
 854 }
 855
 856 void Session::add_source(shared_ptr<EventSource> source)
 857 {
 858         if (source_callbacks.count(source) == 1)
 859                 throw Error(SR_ERR_ARG);
 860
 861         auto cb_data = new SourceCallbackData(source);
 862
 863         switch (source->type)
 864         {
 865                 case EventSource::SOURCE_FD:
 866                         check(sr_session_source_add(structure, source->fd, source->events,
 867                                 source->timeout, source_callback, cb_data));
 868                         break;
 869                 case EventSource::SOURCE_POLLFD:
 870                         check(sr_session_source_add_pollfd(structure,
 871                                 source->pollfd.gobj(), source->timeout, source_callback,
 872                                 cb_data));
 873                         break;
 874                 case EventSource::SOURCE_IOCHANNEL:
 875                         check(sr_session_source_add_channel(structure,
 876                                 source->channel->gobj(), source->events, source->timeout,
 877                                 source_callback, cb_data));
 878                         break;
 879         }
 880
 881         source_callbacks[source] = cb_data;
 882 }
 883
 884 void Session::remove_source(shared_ptr<EventSource> source)
 885 {
 886         if (source_callbacks.count(source) == 0)
 887                 throw Error(SR_ERR_ARG);
 888
 889         switch (source->type)
 890         {
 891                 case EventSource::SOURCE_FD:
 892                         check(sr_session_source_remove(structure, source->fd));
 893                         break;
 894                 case EventSource::SOURCE_POLLFD:
 895                         check(sr_session_source_remove_pollfd(structure,
 896                                 source->pollfd.gobj()));
 897                         break;
 898                 case EventSource::SOURCE_IOCHANNEL:
 899                         check(sr_session_source_remove_channel(structure,
 900                                 source->channel->gobj()));
 901                         break;
 902         }
 903
 904         delete source_callbacks[source];
 905
 906         source_callbacks.erase(source);
 907 }
 908
 909 shared_ptr<Trigger> Session::get_trigger()
 910 {
 911         return trigger;
 912 }
 913
 914 void Session::set_trigger(shared_ptr<Trigger> trigger)
 915 {
 916         check(sr_session_trigger_set(structure, trigger->structure));
 917         this->trigger = trigger;
 918 }
 919
 920 Packet::Packet(shared_ptr<Device> device,
 921         const struct sr_datafeed_packet *structure) :
 922         structure(structure),
 923         device(device)
 924 {
 925         switch (structure->type)
 926         {
 927                 case SR_DF_HEADER:
 928                         payload = new Header(
 929                                 static_cast<const struct sr_datafeed_header *>(
 930                                         structure->payload));
 931                         break;
 932                 case SR_DF_META:
 933                         payload = new Meta(
 934                                 static_cast<const struct sr_datafeed_meta *>(
 935                                         structure->payload));
 936                         break;
 937                 case SR_DF_LOGIC:
 938                         payload = new Logic(
 939                                 static_cast<const struct sr_datafeed_logic *>(
 940                                         structure->payload));
 941                         break;
 942                 case SR_DF_ANALOG:
 943                         payload = new Analog(
 944                                 static_cast<const struct sr_datafeed_analog *>(
 945                                         structure->payload));
 946                         break;
 947         }
 948 }
 949
 950 Packet::~Packet()
 951 {
 952         if (payload)
 953                 delete payload;
 954 }
 955
 956 const PacketType *Packet::get_type()
 957 {
 958         return PacketType::get(structure->type);
 959 }
 960
 961 shared_ptr<PacketPayload> Packet::get_payload()
 962 {
 963         return payload->get_shared_pointer(this);
 964 }
 965
 966 PacketPayload::PacketPayload()
 967 {
 968 }
 969
 970 PacketPayload::~PacketPayload()
 971 {
 972 }
 973
 974 Header::Header(const struct sr_datafeed_header *structure) :
 975         PacketPayload(),
 976         StructureWrapper<Packet, const struct sr_datafeed_header>(structure)
 977 {
 978 }
 979
 980 Header::~Header()
 981 {
 982 }
 983
 984 int Header::get_feed_version()
 985 {
 986         return structure->feed_version;
 987 }
 988
 989 Glib::TimeVal Header::get_start_time()
 990 {
 991         return Glib::TimeVal(
 992                 structure->starttime.tv_sec,
 993                 structure->starttime.tv_usec);
 994 }
 995
 996 Meta::Meta(const struct sr_datafeed_meta *structure) :
 997         PacketPayload(),
 998         StructureWrapper<Packet, const struct sr_datafeed_meta>(structure)
 999 {
1000 }
1001
1002 Meta::~Meta()
1003 {
1004 }
1005
1006 map<const ConfigKey *, Glib::VariantBase> Meta::get_config()
1007 {
1008         map<const ConfigKey *, Glib::VariantBase> result;
1009         for (auto l = structure->config; l; l = l->next)
1010         {
1011                 auto config = (struct sr_config *) l->data;
1012                 result[ConfigKey::get(config->key)] = Glib::VariantBase(config->data);
1013         }
1014         return result;
1015 }
1016
1017 Logic::Logic(const struct sr_datafeed_logic *structure) :
1018         PacketPayload(),
1019         StructureWrapper<Packet, const struct sr_datafeed_logic>(structure)
1020 {
1021 }
1022
1023 Logic::~Logic()
1024 {
1025 }
1026
1027 void *Logic::get_data_pointer()
1028 {
1029         return structure->data;
1030 }
1031
1032 size_t Logic::get_data_length()
1033 {
1034         return structure->length;
1035 }
1036
1037 unsigned int Logic::get_unit_size()
1038 {
1039         return structure->unitsize;
1040 }
1041
1042 Analog::Analog(const struct sr_datafeed_analog *structure) :
1043         PacketPayload(),
1044         StructureWrapper<Packet, const struct sr_datafeed_analog>(structure)
1045 {
1046 }
1047
1048 Analog::~Analog()
1049 {
1050 }
1051
1052 float *Analog::get_data_pointer()
1053 {
1054         return structure->data;
1055 }
1056
1057 unsigned int Analog::get_num_samples()
1058 {
1059         return structure->num_samples;
1060 }
1061
1062 vector<shared_ptr<Channel>> Analog::get_channels()
1063 {
1064         vector<shared_ptr<Channel>> result;
1065         for (auto l = structure->channels; l; l = l->next)
1066                 result.push_back(parent->device->get_channel(
1067                         (struct sr_channel *)l->data));
1068         return result;
1069 }
1070
1071 const Quantity *Analog::get_mq()
1072 {
1073         return Quantity::get(structure->mq);
1074 }
1075
1076 const Unit *Analog::get_unit()
1077 {
1078         return Unit::get(structure->unit);
1079 }
1080
1081 vector<const QuantityFlag *> Analog::get_mq_flags()
1082 {
1083         return QuantityFlag::flags_from_mask(structure->mqflags);
1084 }
1085
1086 InputFormat::InputFormat(struct sr_input_format *structure) :
1087         StructureWrapper<Context, struct sr_input_format>(structure)
1088 {
1089 }
1090
1091 InputFormat::~InputFormat()
1092 {
1093 }
1094
1095 string InputFormat::get_name()
1096 {
1097         return valid_string(structure->id);
1098 }
1099
1100 string InputFormat::get_description()
1101 {
1102         return valid_string(structure->description);
1103 }
1104
1105 bool InputFormat::format_match(string filename)
1106 {
1107         return structure->format_match(filename.c_str());
1108 }
1109
1110 shared_ptr<InputFileDevice> InputFormat::open_file(string filename,
1111                 map<string, string> options)
1112 {
1113         auto input = g_new(struct sr_input, 1);
1114         input->param = map_to_hash(options);
1115
1116         /** Run initialisation. */
1117         check(structure->init(input, filename.c_str()));
1118
1119         /** Create virtual device. */
1120         return shared_ptr<InputFileDevice>(new InputFileDevice(
1121                 static_pointer_cast<InputFormat>(shared_from_this()), input, filename),
1122                 InputFileDevice::Deleter());
1123 }
1124
1125 InputFileDevice::InputFileDevice(shared_ptr<InputFormat> format,
1126                 struct sr_input *input, string filename) :
1127         Device(input->sdi),
1128         input(input),
1129         format(format),
1130         filename(filename)
1131 {
1132 }
1133
1134 InputFileDevice::~InputFileDevice()
1135 {
1136         g_hash_table_unref(input->param);
1137         g_free(input);
1138 }
1139
1140 void InputFileDevice::load()
1141 {
1142         check(format->structure->loadfile(input, filename.c_str()));
1143 }
1144
1145 OutputFormat::OutputFormat(struct sr_output_format *structure) :
1146         StructureWrapper<Context, struct sr_output_format>(structure)
1147 {
1148 }
1149
1150 OutputFormat::~OutputFormat()
1151 {
1152 }
1153
1154 string OutputFormat::get_name()
1155 {
1156         return valid_string(structure->id);
1157 }
1158
1159 string OutputFormat::get_description()
1160 {
1161         return valid_string(structure->description);
1162 }
1163
1164 shared_ptr<Output> OutputFormat::create_output(
1165         shared_ptr<Device> device, map<string, string> options)
1166 {
1167         return shared_ptr<Output>(
1168                 new Output(
1169                         static_pointer_cast<OutputFormat>(shared_from_this()),
1170                                 device, options),
1171                 Output::Deleter());
1172 }
1173
1174 Output::Output(shared_ptr<OutputFormat> format,
1175                 shared_ptr<Device> device, map<string, string> options) :
1176         structure(sr_output_new(format->structure,
1177                 map_to_hash(options), device->structure)),
1178         format(format), device(device), options(options)
1179 {
1180 }
1181
1182 Output::~Output()
1183 {
1184         g_hash_table_unref(structure->params);
1185         check(sr_output_free(structure));
1186 }
1187
1188 string Output::receive(shared_ptr<Packet> packet)
1189 {
1190         GString *out;
1191         check(sr_output_send(structure, packet->structure, &out));
1192         if (out)
1193         {
1194                 auto result = string(out->str, out->str + out->len);
1195                 g_string_free(out, true);
1196                 return result;
1197         }
1198         else
1199         {
1200                 return string();
1201         }
1202 }
1203
1204 #include "enums.cpp"
1205
1206 }