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