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