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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012-14 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <QDebug> | |
21 | #include <QFileInfo> | |
22 | ||
23 | #include <cassert> | |
24 | #include <memory> | |
25 | #include <mutex> | |
26 | #include <stdexcept> | |
27 | ||
28 | #include <sys/stat.h> | |
29 | ||
30 | #include "devicemanager.hpp" | |
31 | #include "session.hpp" | |
32 | ||
33 | #include "data/analog.hpp" | |
34 | #include "data/analogsegment.hpp" | |
35 | #include "data/decode/decoder.hpp" | |
36 | #include "data/logic.hpp" | |
37 | #include "data/logicsegment.hpp" | |
38 | #include "data/signalbase.hpp" | |
39 | ||
40 | #include "devices/hardwaredevice.hpp" | |
41 | #include "devices/inputfile.hpp" | |
42 | #include "devices/sessionfile.hpp" | |
43 | ||
44 | #include "toolbars/mainbar.hpp" | |
45 | ||
46 | #include "views/trace/analogsignal.hpp" | |
47 | #include "views/trace/decodetrace.hpp" | |
48 | #include "views/trace/logicsignal.hpp" | |
49 | #include "views/trace/signal.hpp" | |
50 | #include "views/trace/view.hpp" | |
51 | ||
52 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
53 | ||
54 | #ifdef ENABLE_DECODE | |
55 | #include <libsigrokdecode/libsigrokdecode.h> | |
56 | #include "data/decodesignal.hpp" | |
57 | #endif | |
58 | ||
59 | using std::bad_alloc; | |
60 | using std::dynamic_pointer_cast; | |
61 | using std::find_if; | |
62 | using std::function; | |
63 | using std::lock_guard; | |
64 | using std::list; | |
65 | using std::make_pair; | |
66 | using std::make_shared; | |
67 | using std::map; | |
68 | using std::max; | |
69 | using std::move; | |
70 | using std::mutex; | |
71 | using std::pair; | |
72 | using std::recursive_mutex; | |
73 | using std::runtime_error; | |
74 | using std::shared_ptr; | |
75 | using std::string; | |
76 | using std::unique_ptr; | |
77 | using std::unordered_set; | |
78 | using std::vector; | |
79 | ||
80 | using sigrok::Analog; | |
81 | using sigrok::Channel; | |
82 | using sigrok::ConfigKey; | |
83 | using sigrok::DatafeedCallbackFunction; | |
84 | using sigrok::Error; | |
85 | using sigrok::InputFormat; | |
86 | using sigrok::Logic; | |
87 | using sigrok::Meta; | |
88 | using sigrok::Packet; | |
89 | using sigrok::Session; | |
90 | ||
91 | using Glib::VariantBase; | |
92 | ||
93 | namespace pv { | |
94 | Session::Session(DeviceManager &device_manager, QString name) : | |
95 | device_manager_(device_manager), | |
96 | default_name_(name), | |
97 | name_(name), | |
98 | capture_state_(Stopped), | |
99 | cur_samplerate_(0), | |
100 | data_saved_(true) | |
101 | { | |
102 | } | |
103 | ||
104 | Session::~Session() | |
105 | { | |
106 | // Stop and join to the thread | |
107 | stop_capture(); | |
108 | } | |
109 | ||
110 | DeviceManager& Session::device_manager() | |
111 | { | |
112 | return device_manager_; | |
113 | } | |
114 | ||
115 | const DeviceManager& Session::device_manager() const | |
116 | { | |
117 | return device_manager_; | |
118 | } | |
119 | ||
120 | shared_ptr<sigrok::Session> Session::session() const | |
121 | { | |
122 | if (!device_) | |
123 | return shared_ptr<sigrok::Session>(); | |
124 | return device_->session(); | |
125 | } | |
126 | ||
127 | shared_ptr<devices::Device> Session::device() const | |
128 | { | |
129 | return device_; | |
130 | } | |
131 | ||
132 | QString Session::name() const | |
133 | { | |
134 | return name_; | |
135 | } | |
136 | ||
137 | void Session::set_name(QString name) | |
138 | { | |
139 | if (default_name_.isEmpty()) | |
140 | default_name_ = name; | |
141 | ||
142 | name_ = name; | |
143 | ||
144 | name_changed(); | |
145 | } | |
146 | ||
147 | const list< shared_ptr<views::ViewBase> > Session::views() const | |
148 | { | |
149 | return views_; | |
150 | } | |
151 | ||
152 | shared_ptr<views::ViewBase> Session::main_view() const | |
153 | { | |
154 | return main_view_; | |
155 | } | |
156 | ||
157 | void Session::set_main_bar(shared_ptr<pv::toolbars::MainBar> main_bar) | |
158 | { | |
159 | main_bar_ = main_bar; | |
160 | } | |
161 | ||
162 | shared_ptr<pv::toolbars::MainBar> Session::main_bar() const | |
163 | { | |
164 | return main_bar_; | |
165 | } | |
166 | ||
167 | bool Session::data_saved() const | |
168 | { | |
169 | return data_saved_; | |
170 | } | |
171 | ||
172 | void Session::save_settings(QSettings &settings) const | |
173 | { | |
174 | map<string, string> dev_info; | |
175 | list<string> key_list; | |
176 | int decode_signals = 0, views = 0; | |
177 | ||
178 | if (device_) { | |
179 | shared_ptr<devices::HardwareDevice> hw_device = | |
180 | dynamic_pointer_cast< devices::HardwareDevice >(device_); | |
181 | ||
182 | if (hw_device) { | |
183 | settings.setValue("device_type", "hardware"); | |
184 | settings.beginGroup("device"); | |
185 | ||
186 | key_list.emplace_back("vendor"); | |
187 | key_list.emplace_back("model"); | |
188 | key_list.emplace_back("version"); | |
189 | key_list.emplace_back("serial_num"); | |
190 | key_list.emplace_back("connection_id"); | |
191 | ||
192 | dev_info = device_manager_.get_device_info(device_); | |
193 | ||
194 | for (string key : key_list) { | |
195 | if (dev_info.count(key)) | |
196 | settings.setValue(QString::fromUtf8(key.c_str()), | |
197 | QString::fromUtf8(dev_info.at(key).c_str())); | |
198 | else | |
199 | settings.remove(QString::fromUtf8(key.c_str())); | |
200 | } | |
201 | ||
202 | settings.endGroup(); | |
203 | } | |
204 | ||
205 | shared_ptr<devices::SessionFile> sessionfile_device = | |
206 | dynamic_pointer_cast< devices::SessionFile >(device_); | |
207 | ||
208 | if (sessionfile_device) { | |
209 | settings.setValue("device_type", "sessionfile"); | |
210 | settings.beginGroup("device"); | |
211 | settings.setValue("filename", QString::fromStdString( | |
212 | sessionfile_device->full_name())); | |
213 | settings.endGroup(); | |
214 | } | |
215 | ||
216 | // Save channels and decoders | |
217 | for (shared_ptr<data::SignalBase> base : signalbases_) { | |
218 | #ifdef ENABLE_DECODE | |
219 | if (base->is_decode_signal()) { | |
220 | settings.beginGroup("decode_signal" + QString::number(decode_signals++)); | |
221 | base->save_settings(settings); | |
222 | settings.endGroup(); | |
223 | } else | |
224 | #endif | |
225 | { | |
226 | settings.beginGroup(base->internal_name()); | |
227 | base->save_settings(settings); | |
228 | settings.endGroup(); | |
229 | } | |
230 | } | |
231 | ||
232 | settings.setValue("decode_signals", decode_signals); | |
233 | ||
234 | // Save view states and their signal settings | |
235 | // Note: main_view must be saved as view0 | |
236 | settings.beginGroup("view" + QString::number(views++)); | |
237 | main_view_->save_settings(settings); | |
238 | settings.endGroup(); | |
239 | ||
240 | for (shared_ptr<views::ViewBase> view : views_) { | |
241 | if (view != main_view_) { | |
242 | settings.beginGroup("view" + QString::number(views++)); | |
243 | view->save_settings(settings); | |
244 | settings.endGroup(); | |
245 | } | |
246 | } | |
247 | ||
248 | settings.setValue("views", views); | |
249 | } | |
250 | } | |
251 | ||
252 | void Session::restore_settings(QSettings &settings) | |
253 | { | |
254 | shared_ptr<devices::Device> device; | |
255 | ||
256 | QString device_type = settings.value("device_type").toString(); | |
257 | ||
258 | if (device_type == "hardware") { | |
259 | map<string, string> dev_info; | |
260 | list<string> key_list; | |
261 | ||
262 | // Re-select last used device if possible but only if it's not demo | |
263 | settings.beginGroup("device"); | |
264 | key_list.emplace_back("vendor"); | |
265 | key_list.emplace_back("model"); | |
266 | key_list.emplace_back("version"); | |
267 | key_list.emplace_back("serial_num"); | |
268 | key_list.emplace_back("connection_id"); | |
269 | ||
270 | for (string key : key_list) { | |
271 | const QString k = QString::fromStdString(key); | |
272 | if (!settings.contains(k)) | |
273 | continue; | |
274 | ||
275 | const string value = settings.value(k).toString().toStdString(); | |
276 | if (!value.empty()) | |
277 | dev_info.insert(make_pair(key, value)); | |
278 | } | |
279 | ||
280 | if (dev_info.count("model") > 0) | |
281 | device = device_manager_.find_device_from_info(dev_info); | |
282 | ||
283 | if (device) | |
284 | set_device(device); | |
285 | ||
286 | settings.endGroup(); | |
287 | } | |
288 | ||
289 | if (device_type == "sessionfile") { | |
290 | settings.beginGroup("device"); | |
291 | QString filename = settings.value("filename").toString(); | |
292 | settings.endGroup(); | |
293 | ||
294 | if (QFileInfo(filename).isReadable()) { | |
295 | device = make_shared<devices::SessionFile>(device_manager_.context(), | |
296 | filename.toStdString()); | |
297 | set_device(device); | |
298 | ||
299 | // TODO Perform error handling | |
300 | start_capture([](QString infoMessage) { (void)infoMessage; }); | |
301 | ||
302 | set_name(QFileInfo(filename).fileName()); | |
303 | } | |
304 | } | |
305 | ||
306 | if (device) { | |
307 | // Restore channels | |
308 | for (shared_ptr<data::SignalBase> base : signalbases_) { | |
309 | settings.beginGroup(base->internal_name()); | |
310 | base->restore_settings(settings); | |
311 | settings.endGroup(); | |
312 | } | |
313 | ||
314 | // Restore decoders | |
315 | #ifdef ENABLE_DECODE | |
316 | int decode_signals = settings.value("decode_signals").toInt(); | |
317 | ||
318 | for (int i = 0; i < decode_signals; i++) { | |
319 | settings.beginGroup("decode_signal" + QString::number(i)); | |
320 | shared_ptr<data::DecodeSignal> signal = add_decode_signal(); | |
321 | signal->restore_settings(settings); | |
322 | settings.endGroup(); | |
323 | } | |
324 | #endif | |
325 | ||
326 | // Restore views | |
327 | int views = settings.value("views").toInt(); | |
328 | ||
329 | for (int i = 0; i < views; i++) { | |
330 | settings.beginGroup("view" + QString::number(i)); | |
331 | ||
332 | if (i > 0) { | |
333 | views::ViewType type = (views::ViewType)settings.value("type").toInt(); | |
334 | add_view(name_, type, this); | |
335 | views_.back()->restore_settings(settings); | |
336 | } else | |
337 | main_view_->restore_settings(settings); | |
338 | ||
339 | settings.endGroup(); | |
340 | } | |
341 | } | |
342 | } | |
343 | ||
344 | void Session::select_device(shared_ptr<devices::Device> device) | |
345 | { | |
346 | try { | |
347 | if (device) | |
348 | set_device(device); | |
349 | else | |
350 | set_default_device(); | |
351 | } catch (const QString &e) { | |
352 | main_bar_->session_error(tr("Failed to Select Device"), | |
353 | tr("Failed to Select Device")); | |
354 | } | |
355 | } | |
356 | ||
357 | void Session::set_device(shared_ptr<devices::Device> device) | |
358 | { | |
359 | assert(device); | |
360 | ||
361 | // Ensure we are not capturing before setting the device | |
362 | stop_capture(); | |
363 | ||
364 | if (device_) | |
365 | device_->close(); | |
366 | ||
367 | device_.reset(); | |
368 | ||
369 | // Revert name back to default name (e.g. "Session 1") as the data is gone | |
370 | name_ = default_name_; | |
371 | name_changed(); | |
372 | ||
373 | // Remove all stored data | |
374 | for (shared_ptr<views::ViewBase> view : views_) { | |
375 | view->clear_signals(); | |
376 | #ifdef ENABLE_DECODE | |
377 | view->clear_decode_signals(); | |
378 | #endif | |
379 | } | |
380 | for (const shared_ptr<data::SignalData> d : all_signal_data_) | |
381 | d->clear(); | |
382 | all_signal_data_.clear(); | |
383 | signalbases_.clear(); | |
384 | cur_logic_segment_.reset(); | |
385 | ||
386 | for (auto entry : cur_analog_segments_) { | |
387 | shared_ptr<sigrok::Channel>(entry.first).reset(); | |
388 | shared_ptr<data::AnalogSegment>(entry.second).reset(); | |
389 | } | |
390 | ||
391 | logic_data_.reset(); | |
392 | ||
393 | signals_changed(); | |
394 | ||
395 | device_ = move(device); | |
396 | ||
397 | try { | |
398 | device_->open(); | |
399 | } catch (const QString &e) { | |
400 | device_.reset(); | |
401 | } | |
402 | ||
403 | if (device_) { | |
404 | device_->session()->add_datafeed_callback([=] | |
405 | (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) { | |
406 | data_feed_in(device, packet); | |
407 | }); | |
408 | ||
409 | update_signals(); | |
410 | } | |
411 | ||
412 | device_changed(); | |
413 | } | |
414 | ||
415 | void Session::set_default_device() | |
416 | { | |
417 | const list< shared_ptr<devices::HardwareDevice> > &devices = | |
418 | device_manager_.devices(); | |
419 | ||
420 | if (devices.empty()) | |
421 | return; | |
422 | ||
423 | // Try and find the demo device and select that by default | |
424 | const auto iter = find_if(devices.begin(), devices.end(), | |
425 | [] (const shared_ptr<devices::HardwareDevice> &d) { | |
426 | return d->hardware_device()->driver()->name() == "demo"; }); | |
427 | set_device((iter == devices.end()) ? devices.front() : *iter); | |
428 | } | |
429 | ||
430 | /** | |
431 | * Convert generic options to data types that are specific to InputFormat. | |
432 | * | |
433 | * @param[in] user_spec Vector of tokenized words, string format. | |
434 | * @param[in] fmt_opts Input format's options, result of InputFormat::options(). | |
435 | * | |
436 | * @return Map of options suitable for InputFormat::create_input(). | |
437 | */ | |
438 | map<string, Glib::VariantBase> | |
439 | Session::input_format_options(vector<string> user_spec, | |
440 | map<string, shared_ptr<Option>> fmt_opts) | |
441 | { | |
442 | map<string, Glib::VariantBase> result; | |
443 | ||
444 | for (auto entry : user_spec) { | |
445 | /* | |
446 | * Split key=value specs. Accept entries without separator | |
447 | * (for simplified boolean specifications). | |
448 | */ | |
449 | string key, val; | |
450 | size_t pos = entry.find("="); | |
451 | if (pos == std::string::npos) { | |
452 | key = entry; | |
453 | val = ""; | |
454 | } else { | |
455 | key = entry.substr(0, pos); | |
456 | val = entry.substr(pos + 1); | |
457 | } | |
458 | ||
459 | /* | |
460 | * Skip user specifications that are not a member of the | |
461 | * format's set of supported options. Have the text input | |
462 | * spec converted to the required input format specific | |
463 | * data type. | |
464 | */ | |
465 | auto found = fmt_opts.find(key); | |
466 | if (found == fmt_opts.end()) | |
467 | continue; | |
468 | shared_ptr<Option> opt = found->second; | |
469 | result[key] = opt->parse_string(val); | |
470 | } | |
471 | ||
472 | return result; | |
473 | } | |
474 | ||
475 | void Session::load_init_file(const string &file_name, const string &format) | |
476 | { | |
477 | shared_ptr<InputFormat> input_format; | |
478 | map<string, Glib::VariantBase> input_opts; | |
479 | ||
480 | if (!format.empty()) { | |
481 | const map<string, shared_ptr<InputFormat> > formats = | |
482 | device_manager_.context()->input_formats(); | |
483 | auto user_opts = pv::util::split_string(format, ":"); | |
484 | string user_name = user_opts.front(); | |
485 | user_opts.erase(user_opts.begin()); | |
486 | const auto iter = find_if(formats.begin(), formats.end(), | |
487 | [&](const pair<string, shared_ptr<InputFormat> > f) { | |
488 | return f.first == user_name; }); | |
489 | if (iter == formats.end()) { | |
490 | main_bar_->session_error(tr("Error"), | |
491 | tr("Unexpected input format: %s").arg(QString::fromStdString(format))); | |
492 | return; | |
493 | } | |
494 | input_format = (*iter).second; | |
495 | input_opts = input_format_options(user_opts, | |
496 | input_format->options()); | |
497 | } | |
498 | ||
499 | load_file(QString::fromStdString(file_name), input_format, input_opts); | |
500 | } | |
501 | ||
502 | void Session::load_file(QString file_name, | |
503 | shared_ptr<sigrok::InputFormat> format, | |
504 | const map<string, Glib::VariantBase> &options) | |
505 | { | |
506 | const QString errorMessage( | |
507 | QString("Failed to load file %1").arg(file_name)); | |
508 | ||
509 | try { | |
510 | if (format) | |
511 | set_device(shared_ptr<devices::Device>( | |
512 | new devices::InputFile( | |
513 | device_manager_.context(), | |
514 | file_name.toStdString(), | |
515 | format, options))); | |
516 | else | |
517 | set_device(shared_ptr<devices::Device>( | |
518 | new devices::SessionFile( | |
519 | device_manager_.context(), | |
520 | file_name.toStdString()))); | |
521 | } catch (Error e) { | |
522 | main_bar_->session_error(tr("Failed to load ") + file_name, e.what()); | |
523 | set_default_device(); | |
524 | main_bar_->update_device_list(); | |
525 | return; | |
526 | } | |
527 | ||
528 | main_bar_->update_device_list(); | |
529 | ||
530 | start_capture([&, errorMessage](QString infoMessage) { | |
531 | main_bar_->session_error(errorMessage, infoMessage); }); | |
532 | ||
533 | set_name(QFileInfo(file_name).fileName()); | |
534 | } | |
535 | ||
536 | Session::capture_state Session::get_capture_state() const | |
537 | { | |
538 | lock_guard<mutex> lock(sampling_mutex_); | |
539 | return capture_state_; | |
540 | } | |
541 | ||
542 | void Session::start_capture(function<void (const QString)> error_handler) | |
543 | { | |
544 | if (!device_) { | |
545 | error_handler(tr("No active device set, can't start acquisition.")); | |
546 | return; | |
547 | } | |
548 | ||
549 | stop_capture(); | |
550 | ||
551 | // Check that at least one channel is enabled | |
552 | const shared_ptr<sigrok::Device> sr_dev = device_->device(); | |
553 | if (sr_dev) { | |
554 | const auto channels = sr_dev->channels(); | |
555 | if (!any_of(channels.begin(), channels.end(), | |
556 | [](shared_ptr<Channel> channel) { | |
557 | return channel->enabled(); })) { | |
558 | error_handler(tr("No channels enabled.")); | |
559 | return; | |
560 | } | |
561 | } | |
562 | ||
563 | // Clear signal data | |
564 | for (const shared_ptr<data::SignalData> d : all_signal_data_) | |
565 | d->clear(); | |
566 | ||
567 | // Revert name back to default name (e.g. "Session 1") for real devices | |
568 | // as the (possibly saved) data is gone. File devices keep their name. | |
569 | shared_ptr<devices::HardwareDevice> hw_device = | |
570 | dynamic_pointer_cast< devices::HardwareDevice >(device_); | |
571 | ||
572 | if (hw_device) { | |
573 | name_ = default_name_; | |
574 | name_changed(); | |
575 | } | |
576 | ||
577 | // Begin the session | |
578 | sampling_thread_ = std::thread( | |
579 | &Session::sample_thread_proc, this, error_handler); | |
580 | } | |
581 | ||
582 | void Session::stop_capture() | |
583 | { | |
584 | if (get_capture_state() != Stopped) | |
585 | device_->stop(); | |
586 | ||
587 | // Check that sampling stopped | |
588 | if (sampling_thread_.joinable()) | |
589 | sampling_thread_.join(); | |
590 | } | |
591 | ||
592 | void Session::register_view(shared_ptr<views::ViewBase> view) | |
593 | { | |
594 | if (views_.empty()) { | |
595 | main_view_ = view; | |
596 | } | |
597 | ||
598 | views_.push_back(view); | |
599 | ||
600 | // Add all device signals | |
601 | update_signals(); | |
602 | ||
603 | // Add all other signals | |
604 | unordered_set< shared_ptr<data::SignalBase> > view_signalbases = | |
605 | view->signalbases(); | |
606 | ||
607 | views::trace::View *trace_view = | |
608 | qobject_cast<views::trace::View*>(view.get()); | |
609 | ||
610 | if (trace_view) { | |
611 | for (shared_ptr<data::SignalBase> signalbase : signalbases_) { | |
612 | const int sb_exists = count_if( | |
613 | view_signalbases.cbegin(), view_signalbases.cend(), | |
614 | [&](const shared_ptr<data::SignalBase> &sb) { | |
615 | return sb == signalbase; | |
616 | }); | |
617 | // Add the signal to the view as it doesn't have it yet | |
618 | if (!sb_exists) | |
619 | switch (signalbase->type()) { | |
620 | case data::SignalBase::AnalogChannel: | |
621 | case data::SignalBase::LogicChannel: | |
622 | case data::SignalBase::A2LChannel: | |
623 | break; | |
624 | case data::SignalBase::DecodeChannel: | |
625 | #ifdef ENABLE_DECODE | |
626 | trace_view->add_decode_signal( | |
627 | dynamic_pointer_cast<data::DecodeSignal>(signalbase)); | |
628 | #endif | |
629 | break; | |
630 | case data::SignalBase::MathChannel: | |
631 | // TBD | |
632 | break; | |
633 | } | |
634 | } | |
635 | } | |
636 | ||
637 | signals_changed(); | |
638 | } | |
639 | ||
640 | void Session::deregister_view(shared_ptr<views::ViewBase> view) | |
641 | { | |
642 | views_.remove_if([&](shared_ptr<views::ViewBase> v) { return v == view; }); | |
643 | ||
644 | if (views_.empty()) { | |
645 | main_view_.reset(); | |
646 | ||
647 | // Without a view there can be no main bar | |
648 | main_bar_.reset(); | |
649 | } | |
650 | } | |
651 | ||
652 | bool Session::has_view(shared_ptr<views::ViewBase> view) | |
653 | { | |
654 | for (shared_ptr<views::ViewBase> v : views_) | |
655 | if (v == view) | |
656 | return true; | |
657 | ||
658 | return false; | |
659 | } | |
660 | ||
661 | double Session::get_samplerate() const | |
662 | { | |
663 | double samplerate = 0.0; | |
664 | ||
665 | for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) { | |
666 | assert(d); | |
667 | const vector< shared_ptr<pv::data::Segment> > segments = | |
668 | d->segments(); | |
669 | for (const shared_ptr<pv::data::Segment> &s : segments) | |
670 | samplerate = max(samplerate, s->samplerate()); | |
671 | } | |
672 | // If there is no sample rate given we use samples as unit | |
673 | if (samplerate == 0.0) | |
674 | samplerate = 1.0; | |
675 | ||
676 | return samplerate; | |
677 | } | |
678 | ||
679 | const unordered_set< shared_ptr<data::SignalBase> > Session::signalbases() const | |
680 | { | |
681 | return signalbases_; | |
682 | } | |
683 | ||
684 | #ifdef ENABLE_DECODE | |
685 | shared_ptr<data::DecodeSignal> Session::add_decode_signal() | |
686 | { | |
687 | shared_ptr<data::DecodeSignal> signal; | |
688 | ||
689 | try { | |
690 | // Create the decode signal | |
691 | signal = make_shared<data::DecodeSignal>(*this); | |
692 | ||
693 | signalbases_.insert(signal); | |
694 | ||
695 | // Add the decode signal to all views | |
696 | for (shared_ptr<views::ViewBase> view : views_) | |
697 | view->add_decode_signal(signal); | |
698 | } catch (runtime_error e) { | |
699 | remove_decode_signal(signal); | |
700 | return nullptr; | |
701 | } | |
702 | ||
703 | signals_changed(); | |
704 | ||
705 | return signal; | |
706 | } | |
707 | ||
708 | void Session::remove_decode_signal(shared_ptr<data::DecodeSignal> signal) | |
709 | { | |
710 | signalbases_.erase(signal); | |
711 | ||
712 | for (shared_ptr<views::ViewBase> view : views_) | |
713 | view->remove_decode_signal(signal); | |
714 | ||
715 | signals_changed(); | |
716 | } | |
717 | #endif | |
718 | ||
719 | void Session::set_capture_state(capture_state state) | |
720 | { | |
721 | bool changed; | |
722 | ||
723 | { | |
724 | lock_guard<mutex> lock(sampling_mutex_); | |
725 | changed = capture_state_ != state; | |
726 | capture_state_ = state; | |
727 | } | |
728 | ||
729 | if (changed) | |
730 | capture_state_changed(state); | |
731 | } | |
732 | ||
733 | void Session::update_signals() | |
734 | { | |
735 | if (!device_) { | |
736 | signalbases_.clear(); | |
737 | logic_data_.reset(); | |
738 | for (shared_ptr<views::ViewBase> view : views_) { | |
739 | view->clear_signals(); | |
740 | #ifdef ENABLE_DECODE | |
741 | view->clear_decode_signals(); | |
742 | #endif | |
743 | } | |
744 | return; | |
745 | } | |
746 | ||
747 | lock_guard<recursive_mutex> lock(data_mutex_); | |
748 | ||
749 | const shared_ptr<sigrok::Device> sr_dev = device_->device(); | |
750 | if (!sr_dev) { | |
751 | signalbases_.clear(); | |
752 | logic_data_.reset(); | |
753 | for (shared_ptr<views::ViewBase> view : views_) { | |
754 | view->clear_signals(); | |
755 | #ifdef ENABLE_DECODE | |
756 | view->clear_decode_signals(); | |
757 | #endif | |
758 | } | |
759 | return; | |
760 | } | |
761 | ||
762 | // Detect what data types we will receive | |
763 | auto channels = sr_dev->channels(); | |
764 | unsigned int logic_channel_count = count_if( | |
765 | channels.begin(), channels.end(), | |
766 | [] (shared_ptr<Channel> channel) { | |
767 | return channel->type() == sigrok::ChannelType::LOGIC; }); | |
768 | ||
769 | // Create data containers for the logic data segments | |
770 | { | |
771 | lock_guard<recursive_mutex> data_lock(data_mutex_); | |
772 | ||
773 | if (logic_channel_count == 0) { | |
774 | logic_data_.reset(); | |
775 | } else if (!logic_data_ || | |
776 | logic_data_->num_channels() != logic_channel_count) { | |
777 | logic_data_.reset(new data::Logic( | |
778 | logic_channel_count)); | |
779 | assert(logic_data_); | |
780 | } | |
781 | } | |
782 | ||
783 | // Make the signals list | |
784 | for (shared_ptr<views::ViewBase> viewbase : views_) { | |
785 | views::trace::View *trace_view = | |
786 | qobject_cast<views::trace::View*>(viewbase.get()); | |
787 | ||
788 | if (trace_view) { | |
789 | unordered_set< shared_ptr<views::trace::Signal> > | |
790 | prev_sigs(trace_view->signals()); | |
791 | trace_view->clear_signals(); | |
792 | ||
793 | for (auto channel : sr_dev->channels()) { | |
794 | shared_ptr<data::SignalBase> signalbase; | |
795 | shared_ptr<views::trace::Signal> signal; | |
796 | ||
797 | // Find the channel in the old signals | |
798 | const auto iter = find_if( | |
799 | prev_sigs.cbegin(), prev_sigs.cend(), | |
800 | [&](const shared_ptr<views::trace::Signal> &s) { | |
801 | return s->base()->channel() == channel; | |
802 | }); | |
803 | if (iter != prev_sigs.end()) { | |
804 | // Copy the signal from the old set to the new | |
805 | signal = *iter; | |
806 | trace_view->add_signal(signal); | |
807 | } else { | |
808 | // Find the signalbase for this channel if possible | |
809 | signalbase.reset(); | |
810 | for (const shared_ptr<data::SignalBase> b : signalbases_) | |
811 | if (b->channel() == channel) | |
812 | signalbase = b; | |
813 | ||
814 | switch(channel->type()->id()) { | |
815 | case SR_CHANNEL_LOGIC: | |
816 | if (!signalbase) { | |
817 | signalbase = make_shared<data::SignalBase>(channel, | |
818 | data::SignalBase::LogicChannel); | |
819 | signalbases_.insert(signalbase); | |
820 | ||
821 | all_signal_data_.insert(logic_data_); | |
822 | signalbase->set_data(logic_data_); | |
823 | ||
824 | connect(this, SIGNAL(capture_state_changed(int)), | |
825 | signalbase.get(), SLOT(on_capture_state_changed(int))); | |
826 | } | |
827 | ||
828 | signal = shared_ptr<views::trace::Signal>( | |
829 | new views::trace::LogicSignal(*this, | |
830 | device_, signalbase)); | |
831 | trace_view->add_signal(signal); | |
832 | break; | |
833 | ||
834 | case SR_CHANNEL_ANALOG: | |
835 | { | |
836 | if (!signalbase) { | |
837 | signalbase = make_shared<data::SignalBase>(channel, | |
838 | data::SignalBase::AnalogChannel); | |
839 | signalbases_.insert(signalbase); | |
840 | ||
841 | shared_ptr<data::Analog> data(new data::Analog()); | |
842 | all_signal_data_.insert(data); | |
843 | signalbase->set_data(data); | |
844 | ||
845 | connect(this, SIGNAL(capture_state_changed(int)), | |
846 | signalbase.get(), SLOT(on_capture_state_changed(int))); | |
847 | } | |
848 | ||
849 | signal = shared_ptr<views::trace::Signal>( | |
850 | new views::trace::AnalogSignal( | |
851 | *this, signalbase)); | |
852 | trace_view->add_signal(signal); | |
853 | break; | |
854 | } | |
855 | ||
856 | default: | |
857 | assert(false); | |
858 | break; | |
859 | } | |
860 | } | |
861 | } | |
862 | } | |
863 | } | |
864 | ||
865 | signals_changed(); | |
866 | } | |
867 | ||
868 | shared_ptr<data::SignalBase> Session::signalbase_from_channel( | |
869 | shared_ptr<sigrok::Channel> channel) const | |
870 | { | |
871 | for (shared_ptr<data::SignalBase> sig : signalbases_) { | |
872 | assert(sig); | |
873 | if (sig->channel() == channel) | |
874 | return sig; | |
875 | } | |
876 | return shared_ptr<data::SignalBase>(); | |
877 | } | |
878 | ||
879 | void Session::sample_thread_proc(function<void (const QString)> error_handler) | |
880 | { | |
881 | assert(error_handler); | |
882 | ||
883 | if (!device_) | |
884 | return; | |
885 | ||
886 | cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE); | |
887 | ||
888 | out_of_memory_ = false; | |
889 | ||
890 | try { | |
891 | device_->start(); | |
892 | } catch (Error e) { | |
893 | error_handler(e.what()); | |
894 | return; | |
895 | } | |
896 | ||
897 | set_capture_state(device_->session()->trigger() ? | |
898 | AwaitingTrigger : Running); | |
899 | ||
900 | try { | |
901 | device_->run(); | |
902 | } catch (Error e) { | |
903 | error_handler(e.what()); | |
904 | set_capture_state(Stopped); | |
905 | return; | |
906 | } | |
907 | ||
908 | set_capture_state(Stopped); | |
909 | ||
910 | // Confirm that SR_DF_END was received | |
911 | if (cur_logic_segment_) { | |
912 | qDebug("SR_DF_END was not received."); | |
913 | assert(false); | |
914 | } | |
915 | ||
916 | // Optimize memory usage | |
917 | free_unused_memory(); | |
918 | ||
919 | // We now have unsaved data unless we just "captured" from a file | |
920 | shared_ptr<devices::File> file_device = | |
921 | dynamic_pointer_cast<devices::File>(device_); | |
922 | ||
923 | if (!file_device) | |
924 | data_saved_ = false; | |
925 | ||
926 | if (out_of_memory_) | |
927 | error_handler(tr("Out of memory, acquisition stopped.")); | |
928 | } | |
929 | ||
930 | void Session::free_unused_memory() | |
931 | { | |
932 | for (shared_ptr<data::SignalData> data : all_signal_data_) { | |
933 | const vector< shared_ptr<data::Segment> > segments = data->segments(); | |
934 | ||
935 | for (shared_ptr<data::Segment> segment : segments) { | |
936 | segment->free_unused_memory(); | |
937 | } | |
938 | } | |
939 | } | |
940 | ||
941 | void Session::feed_in_header() | |
942 | { | |
943 | cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE); | |
944 | } | |
945 | ||
946 | void Session::feed_in_meta(shared_ptr<Meta> meta) | |
947 | { | |
948 | for (auto entry : meta->config()) { | |
949 | switch (entry.first->id()) { | |
950 | case SR_CONF_SAMPLERATE: | |
951 | // We can't rely on the header to always contain the sample rate, | |
952 | // so in case it's supplied via a meta packet, we use it. | |
953 | if (!cur_samplerate_) | |
954 | cur_samplerate_ = g_variant_get_uint64(entry.second.gobj()); | |
955 | ||
956 | /// @todo handle samplerate changes | |
957 | break; | |
958 | default: | |
959 | // Unknown metadata is not an error. | |
960 | break; | |
961 | } | |
962 | } | |
963 | ||
964 | signals_changed(); | |
965 | } | |
966 | ||
967 | void Session::feed_in_trigger() | |
968 | { | |
969 | // The channel containing most samples should be most accurate | |
970 | uint64_t sample_count = 0; | |
971 | ||
972 | { | |
973 | for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) { | |
974 | assert(d); | |
975 | uint64_t temp_count = 0; | |
976 | ||
977 | const vector< shared_ptr<pv::data::Segment> > segments = | |
978 | d->segments(); | |
979 | for (const shared_ptr<pv::data::Segment> &s : segments) | |
980 | temp_count += s->get_sample_count(); | |
981 | ||
982 | if (temp_count > sample_count) | |
983 | sample_count = temp_count; | |
984 | } | |
985 | } | |
986 | ||
987 | trigger_event(sample_count / get_samplerate()); | |
988 | } | |
989 | ||
990 | void Session::feed_in_frame_begin() | |
991 | { | |
992 | if (cur_logic_segment_ || !cur_analog_segments_.empty()) | |
993 | frame_began(); | |
994 | } | |
995 | ||
996 | void Session::feed_in_logic(shared_ptr<Logic> logic) | |
997 | { | |
998 | lock_guard<recursive_mutex> lock(data_mutex_); | |
999 | ||
1000 | if (!logic_data_) { | |
1001 | // The only reason logic_data_ would not have been created is | |
1002 | // if it was not possible to determine the signals when the | |
1003 | // device was created. | |
1004 | update_signals(); | |
1005 | } | |
1006 | ||
1007 | if (!cur_logic_segment_) { | |
1008 | // This could be the first packet after a trigger | |
1009 | set_capture_state(Running); | |
1010 | ||
1011 | // Create a new data segment | |
1012 | cur_logic_segment_ = make_shared<data::LogicSegment>( | |
1013 | *logic_data_, logic->unit_size(), cur_samplerate_); | |
1014 | logic_data_->push_segment(cur_logic_segment_); | |
1015 | ||
1016 | // @todo Putting this here means that only listeners querying | |
1017 | // for logic will be notified. Currently the only user of | |
1018 | // frame_began is DecoderStack, but in future we need to signal | |
1019 | // this after both analog and logic sweeps have begun. | |
1020 | frame_began(); | |
1021 | } | |
1022 | ||
1023 | cur_logic_segment_->append_payload(logic); | |
1024 | ||
1025 | data_received(); | |
1026 | } | |
1027 | ||
1028 | void Session::feed_in_analog(shared_ptr<Analog> analog) | |
1029 | { | |
1030 | lock_guard<recursive_mutex> lock(data_mutex_); | |
1031 | ||
1032 | const vector<shared_ptr<Channel>> channels = analog->channels(); | |
1033 | const unsigned int channel_count = channels.size(); | |
1034 | const size_t sample_count = analog->num_samples() / channel_count; | |
1035 | bool sweep_beginning = false; | |
1036 | ||
1037 | unique_ptr<float> data(new float[analog->num_samples()]); | |
1038 | analog->get_data_as_float(data.get()); | |
1039 | ||
1040 | if (signalbases_.empty()) | |
1041 | update_signals(); | |
1042 | ||
1043 | float *channel_data = data.get(); | |
1044 | for (auto channel : channels) { | |
1045 | shared_ptr<data::AnalogSegment> segment; | |
1046 | ||
1047 | // Try to get the segment of the channel | |
1048 | const map< shared_ptr<Channel>, shared_ptr<data::AnalogSegment> >:: | |
1049 | iterator iter = cur_analog_segments_.find(channel); | |
1050 | if (iter != cur_analog_segments_.end()) | |
1051 | segment = (*iter).second; | |
1052 | else { | |
1053 | // If no segment was found, this means we haven't | |
1054 | // created one yet. i.e. this is the first packet | |
1055 | // in the sweep containing this segment. | |
1056 | sweep_beginning = true; | |
1057 | ||
1058 | // Find the analog data associated with the channel | |
1059 | shared_ptr<data::SignalBase> base = signalbase_from_channel(channel); | |
1060 | assert(base); | |
1061 | ||
1062 | shared_ptr<data::Analog> data(base->analog_data()); | |
1063 | assert(data); | |
1064 | ||
1065 | // Create a segment, keep it in the maps of channels | |
1066 | segment = make_shared<data::AnalogSegment>( | |
1067 | *data, cur_samplerate_); | |
1068 | cur_analog_segments_[channel] = segment; | |
1069 | ||
1070 | // Push the segment into the analog data. | |
1071 | data->push_segment(segment); | |
1072 | } | |
1073 | ||
1074 | assert(segment); | |
1075 | ||
1076 | // Append the samples in the segment | |
1077 | segment->append_interleaved_samples(channel_data++, sample_count, | |
1078 | channel_count); | |
1079 | } | |
1080 | ||
1081 | if (sweep_beginning) { | |
1082 | // This could be the first packet after a trigger | |
1083 | set_capture_state(Running); | |
1084 | } | |
1085 | ||
1086 | data_received(); | |
1087 | } | |
1088 | ||
1089 | void Session::data_feed_in(shared_ptr<sigrok::Device> device, | |
1090 | shared_ptr<Packet> packet) | |
1091 | { | |
1092 | static bool frame_began = false; | |
1093 | ||
1094 | (void)device; | |
1095 | ||
1096 | assert(device); | |
1097 | assert(device == device_->device()); | |
1098 | assert(packet); | |
1099 | ||
1100 | switch (packet->type()->id()) { | |
1101 | case SR_DF_HEADER: | |
1102 | feed_in_header(); | |
1103 | break; | |
1104 | ||
1105 | case SR_DF_META: | |
1106 | feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload())); | |
1107 | break; | |
1108 | ||
1109 | case SR_DF_TRIGGER: | |
1110 | feed_in_trigger(); | |
1111 | break; | |
1112 | ||
1113 | case SR_DF_FRAME_BEGIN: | |
1114 | feed_in_frame_begin(); | |
1115 | frame_began = true; | |
1116 | break; | |
1117 | ||
1118 | case SR_DF_LOGIC: | |
1119 | try { | |
1120 | feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload())); | |
1121 | } catch (bad_alloc) { | |
1122 | out_of_memory_ = true; | |
1123 | device_->stop(); | |
1124 | } | |
1125 | break; | |
1126 | ||
1127 | case SR_DF_ANALOG: | |
1128 | try { | |
1129 | feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload())); | |
1130 | } catch (bad_alloc) { | |
1131 | out_of_memory_ = true; | |
1132 | device_->stop(); | |
1133 | } | |
1134 | break; | |
1135 | ||
1136 | case SR_DF_FRAME_END: | |
1137 | case SR_DF_END: | |
1138 | { | |
1139 | { | |
1140 | lock_guard<recursive_mutex> lock(data_mutex_); | |
1141 | cur_logic_segment_.reset(); | |
1142 | cur_analog_segments_.clear(); | |
1143 | } | |
1144 | if (frame_began) { | |
1145 | frame_began = false; | |
1146 | frame_ended(); | |
1147 | } | |
1148 | break; | |
1149 | } | |
1150 | default: | |
1151 | break; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | void Session::on_data_saved() | |
1156 | { | |
1157 | data_saved_ = true; | |
1158 | } | |
1159 | ||
1160 | } // namespace pv |