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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net> | |
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 <limits> | |
21 | ||
22 | #include <QDebug> | |
23 | ||
24 | #include "logic.hpp" | |
25 | #include "logicsegment.hpp" | |
26 | #include "decodesignal.hpp" | |
27 | #include "signaldata.hpp" | |
28 | ||
29 | #include <pv/binding/decoder.hpp> | |
30 | #include <pv/data/decode/decoder.hpp> | |
31 | #include <pv/data/decode/row.hpp> | |
32 | #include <pv/globalsettings.hpp> | |
33 | #include <pv/session.hpp> | |
34 | ||
35 | using std::lock_guard; | |
36 | using std::make_pair; | |
37 | using std::make_shared; | |
38 | using std::min; | |
39 | using std::out_of_range; | |
40 | using std::shared_ptr; | |
41 | using std::unique_lock; | |
42 | using pv::data::decode::Annotation; | |
43 | using pv::data::decode::Decoder; | |
44 | using pv::data::decode::Row; | |
45 | ||
46 | namespace pv { | |
47 | namespace data { | |
48 | ||
49 | const double DecodeSignal::DecodeMargin = 1.0; | |
50 | const double DecodeSignal::DecodeThreshold = 0.2; | |
51 | const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024; | |
52 | ||
53 | ||
54 | DecodeSignal::DecodeSignal(pv::Session &session) : | |
55 | SignalBase(nullptr, SignalBase::DecodeChannel), | |
56 | session_(session), | |
57 | srd_session_(nullptr), | |
58 | logic_mux_data_invalid_(false), | |
59 | current_segment_id_(0) | |
60 | { | |
61 | connect(&session_, SIGNAL(capture_state_changed(int)), | |
62 | this, SLOT(on_capture_state_changed(int))); | |
63 | } | |
64 | ||
65 | DecodeSignal::~DecodeSignal() | |
66 | { | |
67 | reset_decode(); | |
68 | } | |
69 | ||
70 | const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const | |
71 | { | |
72 | return stack_; | |
73 | } | |
74 | ||
75 | void DecodeSignal::stack_decoder(const srd_decoder *decoder) | |
76 | { | |
77 | assert(decoder); | |
78 | const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder); | |
79 | ||
80 | stack_.push_back(dec); | |
81 | ||
82 | // Set name if this decoder is the first in the list | |
83 | if (stack_.size() == 1) | |
84 | set_name(QString::fromUtf8(decoder->name)); | |
85 | ||
86 | // Include the newly created decode channels in the channel lists | |
87 | update_channel_list(); | |
88 | ||
89 | auto_assign_signals(dec); | |
90 | commit_decoder_channels(); | |
91 | begin_decode(); | |
92 | } | |
93 | ||
94 | void DecodeSignal::remove_decoder(int index) | |
95 | { | |
96 | assert(index >= 0); | |
97 | assert(index < (int)stack_.size()); | |
98 | ||
99 | // Find the decoder in the stack | |
100 | auto iter = stack_.begin(); | |
101 | for (int i = 0; i < index; i++, iter++) | |
102 | assert(iter != stack_.end()); | |
103 | ||
104 | // Delete the element | |
105 | stack_.erase(iter); | |
106 | ||
107 | // Update channels and decoded data | |
108 | update_channel_list(); | |
109 | begin_decode(); | |
110 | } | |
111 | ||
112 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
113 | { | |
114 | auto iter = stack_.cbegin(); | |
115 | for (int i = 0; i < index; i++, iter++) | |
116 | assert(iter != stack_.end()); | |
117 | ||
118 | shared_ptr<Decoder> dec = *iter; | |
119 | ||
120 | // Toggle decoder visibility | |
121 | bool state = false; | |
122 | if (dec) { | |
123 | state = !dec->shown(); | |
124 | dec->show(state); | |
125 | } | |
126 | ||
127 | return state; | |
128 | } | |
129 | ||
130 | void DecodeSignal::reset_decode() | |
131 | { | |
132 | if (decode_thread_.joinable()) { | |
133 | decode_interrupt_ = true; | |
134 | decode_input_cond_.notify_one(); | |
135 | decode_thread_.join(); | |
136 | } | |
137 | ||
138 | if (logic_mux_thread_.joinable()) { | |
139 | logic_mux_interrupt_ = true; | |
140 | logic_mux_cond_.notify_one(); | |
141 | logic_mux_thread_.join(); | |
142 | } | |
143 | ||
144 | stop_srd_session(); | |
145 | ||
146 | class_rows_.clear(); | |
147 | current_segment_id_ = 0; | |
148 | segments_.clear(); | |
149 | ||
150 | logic_mux_data_.reset(); | |
151 | logic_mux_data_invalid_ = true; | |
152 | ||
153 | error_message_ = QString(); | |
154 | ||
155 | decode_reset(); | |
156 | } | |
157 | ||
158 | void DecodeSignal::begin_decode() | |
159 | { | |
160 | if (decode_thread_.joinable()) { | |
161 | decode_interrupt_ = true; | |
162 | decode_input_cond_.notify_one(); | |
163 | decode_thread_.join(); | |
164 | } | |
165 | ||
166 | if (logic_mux_thread_.joinable()) { | |
167 | logic_mux_interrupt_ = true; | |
168 | logic_mux_cond_.notify_one(); | |
169 | logic_mux_thread_.join(); | |
170 | } | |
171 | ||
172 | reset_decode(); | |
173 | ||
174 | if (stack_.size() == 0) { | |
175 | error_message_ = tr("No decoders"); | |
176 | return; | |
177 | } | |
178 | ||
179 | assert(channels_.size() > 0); | |
180 | ||
181 | if (get_assigned_signal_count() == 0) { | |
182 | error_message_ = tr("There are no channels assigned to this decoder"); | |
183 | return; | |
184 | } | |
185 | ||
186 | // Make sure that all assigned channels still provide logic data | |
187 | // (can happen when a converted signal was assigned but the | |
188 | // conversion removed in the meanwhile) | |
189 | for (data::DecodeChannel &ch : channels_) | |
190 | if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr)) | |
191 | ch.assigned_signal = nullptr; | |
192 | ||
193 | // Check that all decoders have the required channels | |
194 | for (const shared_ptr<decode::Decoder> &dec : stack_) | |
195 | if (!dec->have_required_channels()) { | |
196 | error_message_ = tr("One or more required channels " | |
197 | "have not been specified"); | |
198 | return; | |
199 | } | |
200 | ||
201 | // Map out all the annotation classes | |
202 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
203 | assert(dec); | |
204 | const srd_decoder *const decc = dec->decoder(); | |
205 | assert(dec->decoder()); | |
206 | ||
207 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
208 | const srd_decoder_annotation_row *const ann_row = | |
209 | (srd_decoder_annotation_row *)l->data; | |
210 | assert(ann_row); | |
211 | ||
212 | const Row row(decc, ann_row); | |
213 | ||
214 | for (const GSList *ll = ann_row->ann_classes; | |
215 | ll; ll = ll->next) | |
216 | class_rows_[make_pair(decc, | |
217 | GPOINTER_TO_INT(ll->data))] = row; | |
218 | } | |
219 | } | |
220 | ||
221 | // Free the logic data and its segment(s) if it needs to be updated | |
222 | if (logic_mux_data_invalid_) | |
223 | logic_mux_data_.reset(); | |
224 | ||
225 | if (!logic_mux_data_) { | |
226 | const uint32_t ch_count = get_assigned_signal_count(); | |
227 | logic_mux_unit_size_ = (ch_count + 7) / 8; | |
228 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
229 | } | |
230 | ||
231 | // Receive notifications when new sample data is available | |
232 | connect_input_notifiers(); | |
233 | ||
234 | if (get_input_segment_count() == 0) { | |
235 | error_message_ = tr("No input data"); | |
236 | return; | |
237 | } | |
238 | ||
239 | // Make sure the logic output data is complete and up-to-date | |
240 | logic_mux_interrupt_ = false; | |
241 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
242 | ||
243 | // Decode the muxed logic data | |
244 | decode_interrupt_ = false; | |
245 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
246 | } | |
247 | ||
248 | QString DecodeSignal::error_message() const | |
249 | { | |
250 | lock_guard<mutex> lock(output_mutex_); | |
251 | return error_message_; | |
252 | } | |
253 | ||
254 | const vector<data::DecodeChannel> DecodeSignal::get_channels() const | |
255 | { | |
256 | return channels_; | |
257 | } | |
258 | ||
259 | void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec) | |
260 | { | |
261 | bool new_assignment = false; | |
262 | ||
263 | // Try to auto-select channels that don't have signals assigned yet | |
264 | for (data::DecodeChannel &ch : channels_) { | |
265 | // If a decoder is given, auto-assign only its channels | |
266 | if (dec && (ch.decoder_ != dec)) | |
267 | continue; | |
268 | ||
269 | if (ch.assigned_signal) | |
270 | continue; | |
271 | ||
272 | for (shared_ptr<data::SignalBase> s : session_.signalbases()) { | |
273 | const QString ch_name = ch.name.toLower(); | |
274 | const QString s_name = s->name().toLower(); | |
275 | ||
276 | if (s->logic_data() && | |
277 | ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) { | |
278 | ch.assigned_signal = s.get(); | |
279 | new_assignment = true; | |
280 | } | |
281 | } | |
282 | } | |
283 | ||
284 | if (new_assignment) { | |
285 | logic_mux_data_invalid_ = true; | |
286 | commit_decoder_channels(); | |
287 | channels_updated(); | |
288 | } | |
289 | } | |
290 | ||
291 | void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal) | |
292 | { | |
293 | for (data::DecodeChannel &ch : channels_) | |
294 | if (ch.id == channel_id) { | |
295 | ch.assigned_signal = signal; | |
296 | logic_mux_data_invalid_ = true; | |
297 | } | |
298 | ||
299 | commit_decoder_channels(); | |
300 | channels_updated(); | |
301 | begin_decode(); | |
302 | } | |
303 | ||
304 | int DecodeSignal::get_assigned_signal_count() const | |
305 | { | |
306 | // Count all channels that have a signal assigned to them | |
307 | return count_if(channels_.begin(), channels_.end(), | |
308 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
309 | } | |
310 | ||
311 | void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state) | |
312 | { | |
313 | for (data::DecodeChannel &ch : channels_) | |
314 | if (ch.id == channel_id) | |
315 | ch.initial_pin_state = init_state; | |
316 | ||
317 | channels_updated(); | |
318 | ||
319 | begin_decode(); | |
320 | } | |
321 | ||
322 | double DecodeSignal::samplerate() const | |
323 | { | |
324 | double result = 0; | |
325 | ||
326 | // TODO For now, we simply return the first samplerate that we have | |
327 | if (segments_.size() > 0) | |
328 | result = segments_.front().samplerate; | |
329 | ||
330 | return result; | |
331 | } | |
332 | ||
333 | const pv::util::Timestamp DecodeSignal::start_time() const | |
334 | { | |
335 | pv::util::Timestamp result; | |
336 | ||
337 | // TODO For now, we simply return the first start time that we have | |
338 | if (segments_.size() > 0) | |
339 | result = segments_.front().start_time; | |
340 | ||
341 | return result; | |
342 | } | |
343 | ||
344 | int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const | |
345 | { | |
346 | // The working sample count is the highest sample number for | |
347 | // which all used signals have data available, so go through all | |
348 | // channels and use the lowest overall sample count of the segment | |
349 | ||
350 | int64_t count = std::numeric_limits<int64_t>::max(); | |
351 | bool no_signals_assigned = true; | |
352 | ||
353 | for (const data::DecodeChannel &ch : channels_) | |
354 | if (ch.assigned_signal) { | |
355 | no_signals_assigned = false; | |
356 | ||
357 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
358 | if (!logic_data || logic_data->logic_segments().empty()) | |
359 | return 0; | |
360 | ||
361 | try { | |
362 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id); | |
363 | count = min(count, (int64_t)segment->get_sample_count()); | |
364 | } catch (out_of_range) { | |
365 | return 0; | |
366 | } | |
367 | } | |
368 | ||
369 | return (no_signals_assigned ? 0 : count); | |
370 | } | |
371 | ||
372 | int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id) const | |
373 | { | |
374 | lock_guard<mutex> decode_lock(output_mutex_); | |
375 | ||
376 | int64_t result = 0; | |
377 | ||
378 | try { | |
379 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
380 | result = segment->samples_decoded; | |
381 | } catch (out_of_range) { | |
382 | // Do nothing | |
383 | } | |
384 | ||
385 | return result; | |
386 | } | |
387 | ||
388 | vector<Row> DecodeSignal::visible_rows() const | |
389 | { | |
390 | lock_guard<mutex> lock(output_mutex_); | |
391 | ||
392 | vector<Row> rows; | |
393 | ||
394 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
395 | assert(dec); | |
396 | if (!dec->shown()) | |
397 | continue; | |
398 | ||
399 | const srd_decoder *const decc = dec->decoder(); | |
400 | assert(dec->decoder()); | |
401 | ||
402 | // Add a row for the decoder if it doesn't have a row list | |
403 | if (!decc->annotation_rows) | |
404 | rows.emplace_back(decc); | |
405 | ||
406 | // Add the decoder rows | |
407 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
408 | const srd_decoder_annotation_row *const ann_row = | |
409 | (srd_decoder_annotation_row *)l->data; | |
410 | assert(ann_row); | |
411 | rows.emplace_back(decc, ann_row); | |
412 | } | |
413 | } | |
414 | ||
415 | return rows; | |
416 | } | |
417 | ||
418 | void DecodeSignal::get_annotation_subset( | |
419 | vector<pv::data::decode::Annotation> &dest, | |
420 | const decode::Row &row, uint32_t segment_id, uint64_t start_sample, | |
421 | uint64_t end_sample) const | |
422 | { | |
423 | lock_guard<mutex> lock(output_mutex_); | |
424 | ||
425 | try { | |
426 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
427 | const map<const decode::Row, decode::RowData> *rows = | |
428 | &(segment->annotation_rows); | |
429 | ||
430 | const auto iter = rows->find(row); | |
431 | if (iter != rows->end()) | |
432 | (*iter).second.get_annotation_subset(dest, | |
433 | start_sample, end_sample); | |
434 | } catch (out_of_range) { | |
435 | // Do nothing | |
436 | } | |
437 | } | |
438 | ||
439 | void DecodeSignal::save_settings(QSettings &settings) const | |
440 | { | |
441 | SignalBase::save_settings(settings); | |
442 | ||
443 | settings.setValue("decoders", (int)(stack_.size())); | |
444 | ||
445 | // Save decoder stack | |
446 | int decoder_idx = 0; | |
447 | for (shared_ptr<decode::Decoder> decoder : stack_) { | |
448 | settings.beginGroup("decoder" + QString::number(decoder_idx++)); | |
449 | ||
450 | settings.setValue("id", decoder->decoder()->id); | |
451 | ||
452 | // Save decoder options | |
453 | const map<string, GVariant*>& options = decoder->options(); | |
454 | ||
455 | settings.setValue("options", (int)options.size()); | |
456 | ||
457 | // Note: decode::Decoder::options() returns only the options | |
458 | // that differ from the default. See binding::Decoder::getter() | |
459 | int i = 0; | |
460 | for (auto option : options) { | |
461 | settings.beginGroup("option" + QString::number(i)); | |
462 | settings.setValue("name", QString::fromStdString(option.first)); | |
463 | GlobalSettings::store_gvariant(settings, option.second); | |
464 | settings.endGroup(); | |
465 | i++; | |
466 | } | |
467 | ||
468 | settings.endGroup(); | |
469 | } | |
470 | ||
471 | // Save channel mapping | |
472 | settings.setValue("channels", (int)channels_.size()); | |
473 | ||
474 | for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) { | |
475 | auto channel = find_if(channels_.begin(), channels_.end(), | |
476 | [&](data::DecodeChannel ch) { return ch.id == channel_id; }); | |
477 | ||
478 | if (channel == channels_.end()) { | |
479 | qDebug() << "ERROR: Gap in channel index:" << channel_id; | |
480 | continue; | |
481 | } | |
482 | ||
483 | settings.beginGroup("channel" + QString::number(channel_id)); | |
484 | ||
485 | settings.setValue("name", channel->name); // Useful for debugging | |
486 | settings.setValue("initial_pin_state", channel->initial_pin_state); | |
487 | ||
488 | if (channel->assigned_signal) | |
489 | settings.setValue("assigned_signal_name", channel->assigned_signal->name()); | |
490 | ||
491 | settings.endGroup(); | |
492 | } | |
493 | } | |
494 | ||
495 | void DecodeSignal::restore_settings(QSettings &settings) | |
496 | { | |
497 | SignalBase::restore_settings(settings); | |
498 | ||
499 | // Restore decoder stack | |
500 | GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list()); | |
501 | ||
502 | int decoders = settings.value("decoders").toInt(); | |
503 | ||
504 | for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) { | |
505 | settings.beginGroup("decoder" + QString::number(decoder_idx)); | |
506 | ||
507 | QString id = settings.value("id").toString(); | |
508 | ||
509 | for (GSList *entry = dec_list; entry; entry = entry->next) { | |
510 | const srd_decoder *dec = (srd_decoder*)entry->data; | |
511 | if (!dec) | |
512 | continue; | |
513 | ||
514 | if (QString::fromUtf8(dec->id) == id) { | |
515 | shared_ptr<decode::Decoder> decoder = | |
516 | make_shared<decode::Decoder>(dec); | |
517 | ||
518 | stack_.push_back(decoder); | |
519 | ||
520 | // Restore decoder options that differ from their default | |
521 | int options = settings.value("options").toInt(); | |
522 | ||
523 | for (int i = 0; i < options; i++) { | |
524 | settings.beginGroup("option" + QString::number(i)); | |
525 | QString name = settings.value("name").toString(); | |
526 | GVariant *value = GlobalSettings::restore_gvariant(settings); | |
527 | decoder->set_option(name.toUtf8(), value); | |
528 | settings.endGroup(); | |
529 | } | |
530 | ||
531 | // Include the newly created decode channels in the channel lists | |
532 | update_channel_list(); | |
533 | break; | |
534 | } | |
535 | } | |
536 | ||
537 | settings.endGroup(); | |
538 | channels_updated(); | |
539 | } | |
540 | ||
541 | // Restore channel mapping | |
542 | unsigned int channels = settings.value("channels").toInt(); | |
543 | ||
544 | const unordered_set< shared_ptr<data::SignalBase> > signalbases = | |
545 | session_.signalbases(); | |
546 | ||
547 | for (unsigned int channel_id = 0; channel_id < channels; channel_id++) { | |
548 | auto channel = find_if(channels_.begin(), channels_.end(), | |
549 | [&](data::DecodeChannel ch) { return ch.id == channel_id; }); | |
550 | ||
551 | if (channel == channels_.end()) { | |
552 | qDebug() << "ERROR: Non-existant channel index:" << channel_id; | |
553 | continue; | |
554 | } | |
555 | ||
556 | settings.beginGroup("channel" + QString::number(channel_id)); | |
557 | ||
558 | QString assigned_signal_name = settings.value("assigned_signal_name").toString(); | |
559 | ||
560 | for (shared_ptr<data::SignalBase> signal : signalbases) | |
561 | if (signal->name() == assigned_signal_name) | |
562 | channel->assigned_signal = signal.get(); | |
563 | ||
564 | channel->initial_pin_state = settings.value("initial_pin_state").toInt(); | |
565 | ||
566 | settings.endGroup(); | |
567 | } | |
568 | ||
569 | // Update the internal structures | |
570 | update_channel_list(); | |
571 | commit_decoder_channels(); | |
572 | ||
573 | begin_decode(); | |
574 | } | |
575 | ||
576 | uint32_t DecodeSignal::get_input_segment_count() const | |
577 | { | |
578 | uint64_t count = std::numeric_limits<uint64_t>::max(); | |
579 | bool no_signals_assigned = true; | |
580 | ||
581 | for (const data::DecodeChannel &ch : channels_) | |
582 | if (ch.assigned_signal) { | |
583 | no_signals_assigned = false; | |
584 | ||
585 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
586 | if (!logic_data || logic_data->logic_segments().empty()) | |
587 | return 0; | |
588 | ||
589 | // Find the min value of all segment counts | |
590 | if ((uint64_t)(logic_data->logic_segments().size()) < count) | |
591 | count = logic_data->logic_segments().size(); | |
592 | } | |
593 | ||
594 | return (no_signals_assigned ? 0 : count); | |
595 | } | |
596 | ||
597 | uint32_t DecodeSignal::get_input_samplerate(uint32_t segment_id) const | |
598 | { | |
599 | double samplerate = 0; | |
600 | ||
601 | for (const data::DecodeChannel &ch : channels_) | |
602 | if (ch.assigned_signal) { | |
603 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
604 | if (!logic_data || logic_data->logic_segments().empty()) | |
605 | continue; | |
606 | ||
607 | try { | |
608 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id); | |
609 | samplerate = segment->samplerate(); | |
610 | } catch (out_of_range) { | |
611 | // Do nothing | |
612 | } | |
613 | break; | |
614 | } | |
615 | ||
616 | return samplerate; | |
617 | } | |
618 | ||
619 | void DecodeSignal::update_channel_list() | |
620 | { | |
621 | vector<data::DecodeChannel> prev_channels = channels_; | |
622 | channels_.clear(); | |
623 | ||
624 | uint16_t id = 0; | |
625 | ||
626 | // Copy existing entries, create new as needed | |
627 | for (shared_ptr<Decoder> decoder : stack_) { | |
628 | const srd_decoder* srd_d = decoder->decoder(); | |
629 | const GSList *l; | |
630 | ||
631 | // Mandatory channels | |
632 | for (l = srd_d->channels; l; l = l->next) { | |
633 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
634 | bool ch_added = false; | |
635 | ||
636 | // Copy but update ID if this channel was in the list before | |
637 | for (data::DecodeChannel &ch : prev_channels) | |
638 | if (ch.pdch_ == pdch) { | |
639 | ch.id = id++; | |
640 | channels_.push_back(ch); | |
641 | ch_added = true; | |
642 | break; | |
643 | } | |
644 | ||
645 | if (!ch_added) { | |
646 | // Create new entry without a mapped signal | |
647 | data::DecodeChannel ch = {id++, 0, false, nullptr, | |
648 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
649 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
650 | channels_.push_back(ch); | |
651 | } | |
652 | } | |
653 | ||
654 | // Optional channels | |
655 | for (l = srd_d->opt_channels; l; l = l->next) { | |
656 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
657 | bool ch_added = false; | |
658 | ||
659 | // Copy but update ID if this channel was in the list before | |
660 | for (data::DecodeChannel &ch : prev_channels) | |
661 | if (ch.pdch_ == pdch) { | |
662 | ch.id = id++; | |
663 | channels_.push_back(ch); | |
664 | ch_added = true; | |
665 | break; | |
666 | } | |
667 | ||
668 | if (!ch_added) { | |
669 | // Create new entry without a mapped signal | |
670 | data::DecodeChannel ch = {id++, 0, true, nullptr, | |
671 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
672 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
673 | channels_.push_back(ch); | |
674 | } | |
675 | } | |
676 | } | |
677 | ||
678 | // Invalidate the logic output data if the channel assignment changed | |
679 | if (prev_channels.size() != channels_.size()) { | |
680 | // The number of channels changed, there's definitely a difference | |
681 | logic_mux_data_invalid_ = true; | |
682 | } else { | |
683 | // Same number but assignment may still differ, so compare all channels | |
684 | for (size_t i = 0; i < channels_.size(); i++) { | |
685 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
686 | const data::DecodeChannel &ch = channels_[i]; | |
687 | ||
688 | if ((p_ch.pdch_ != ch.pdch_) || | |
689 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
690 | logic_mux_data_invalid_ = true; | |
691 | break; | |
692 | } | |
693 | } | |
694 | ||
695 | } | |
696 | ||
697 | channels_updated(); | |
698 | } | |
699 | ||
700 | void DecodeSignal::commit_decoder_channels() | |
701 | { | |
702 | // Submit channel list to every decoder, containing only the relevant channels | |
703 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
704 | vector<data::DecodeChannel*> channel_list; | |
705 | ||
706 | for (data::DecodeChannel &ch : channels_) | |
707 | if (ch.decoder_ == dec) | |
708 | channel_list.push_back(&ch); | |
709 | ||
710 | dec->set_channels(channel_list); | |
711 | } | |
712 | ||
713 | // Channel bit IDs must be in sync with the channel's apperance in channels_ | |
714 | int id = 0; | |
715 | for (data::DecodeChannel &ch : channels_) | |
716 | if (ch.assigned_signal) | |
717 | ch.bit_id = id++; | |
718 | } | |
719 | ||
720 | void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end) | |
721 | { | |
722 | // Enforce end to be greater than start | |
723 | if (end <= start) | |
724 | return; | |
725 | ||
726 | // Fetch the channel segments and their data | |
727 | vector<shared_ptr<LogicSegment> > segments; | |
728 | vector<const uint8_t*> signal_data; | |
729 | vector<uint8_t> signal_in_bytepos; | |
730 | vector<uint8_t> signal_in_bitpos; | |
731 | ||
732 | for (data::DecodeChannel &ch : channels_) | |
733 | if (ch.assigned_signal) { | |
734 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
735 | ||
736 | shared_ptr<LogicSegment> segment; | |
737 | try { | |
738 | segment = logic_data->logic_segments().at(segment_id); | |
739 | } catch (out_of_range) { | |
740 | qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \ | |
741 | << "has no logic segment" << segment_id; | |
742 | return; | |
743 | } | |
744 | segments.push_back(segment); | |
745 | ||
746 | uint8_t* data = new uint8_t[(end - start) * segment->unit_size()]; | |
747 | segment->get_samples(start, end, data); | |
748 | signal_data.push_back(data); | |
749 | ||
750 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
751 | signal_in_bytepos.push_back(bitpos / 8); | |
752 | signal_in_bitpos.push_back(bitpos % 8); | |
753 | } | |
754 | ||
755 | ||
756 | shared_ptr<LogicSegment> output_segment; | |
757 | try { | |
758 | output_segment = logic_mux_data_->logic_segments().at(segment_id); | |
759 | } catch (out_of_range) { | |
760 | qDebug() << "Muxer error for" << name() << ": no logic mux segment" \ | |
761 | << segment_id << "in mux_logic_samples(), mux segments size is" \ | |
762 | << logic_mux_data_->logic_segments().size(); | |
763 | return; | |
764 | } | |
765 | ||
766 | // Perform the muxing of signal data into the output data | |
767 | uint8_t* output = new uint8_t[(end - start) * output_segment->unit_size()]; | |
768 | unsigned int signal_count = signal_data.size(); | |
769 | ||
770 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
771 | int bitpos = 0; | |
772 | uint8_t bytepos = 0; | |
773 | ||
774 | const int out_sample_pos = sample_cnt * output_segment->unit_size(); | |
775 | for (unsigned int i = 0; i < output_segment->unit_size(); i++) | |
776 | output[out_sample_pos + i] = 0; | |
777 | ||
778 | for (unsigned int i = 0; i < signal_count; i++) { | |
779 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
780 | const uint8_t in_sample = 1 & | |
781 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
782 | ||
783 | const uint8_t out_sample = output[out_sample_pos + bytepos]; | |
784 | ||
785 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
786 | ||
787 | bitpos++; | |
788 | if (bitpos > 7) { | |
789 | bitpos = 0; | |
790 | bytepos++; | |
791 | } | |
792 | } | |
793 | } | |
794 | ||
795 | output_segment->append_payload(output, (end - start) * output_segment->unit_size()); | |
796 | delete[] output; | |
797 | ||
798 | for (const uint8_t* data : signal_data) | |
799 | delete[] data; | |
800 | } | |
801 | ||
802 | void DecodeSignal::logic_mux_proc() | |
803 | { | |
804 | uint32_t segment_id = 0; | |
805 | ||
806 | assert(logic_mux_data_); | |
807 | ||
808 | // Create initial logic mux segment | |
809 | shared_ptr<LogicSegment> output_segment = | |
810 | make_shared<LogicSegment>(*logic_mux_data_, segment_id, | |
811 | logic_mux_unit_size_, 0); | |
812 | logic_mux_data_->push_segment(output_segment); | |
813 | ||
814 | output_segment->set_samplerate(get_input_samplerate(0)); | |
815 | ||
816 | do { | |
817 | const uint64_t input_sample_count = get_working_sample_count(segment_id); | |
818 | const uint64_t output_sample_count = output_segment->get_sample_count(); | |
819 | ||
820 | const uint64_t samples_to_process = | |
821 | (input_sample_count > output_sample_count) ? | |
822 | (input_sample_count - output_sample_count) : 0; | |
823 | ||
824 | // Process the samples if necessary... | |
825 | if (samples_to_process > 0) { | |
826 | const uint64_t unit_size = output_segment->unit_size(); | |
827 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
828 | ||
829 | uint64_t processed_samples = 0; | |
830 | do { | |
831 | const uint64_t start_sample = output_sample_count + processed_samples; | |
832 | const uint64_t sample_count = | |
833 | min(samples_to_process - processed_samples, chunk_sample_count); | |
834 | ||
835 | mux_logic_samples(segment_id, start_sample, start_sample + sample_count); | |
836 | processed_samples += sample_count; | |
837 | ||
838 | // ...and process the newly muxed logic data | |
839 | decode_input_cond_.notify_one(); | |
840 | } while (processed_samples < samples_to_process); | |
841 | } | |
842 | ||
843 | if (samples_to_process == 0) { | |
844 | // TODO Optimize this by caching the input segment count and only | |
845 | // querying it when the cached value was reached | |
846 | if (segment_id < get_input_segment_count() - 1) { | |
847 | // Process next segment | |
848 | segment_id++; | |
849 | ||
850 | output_segment = | |
851 | make_shared<LogicSegment>(*logic_mux_data_, segment_id, | |
852 | logic_mux_unit_size_, 0); | |
853 | logic_mux_data_->push_segment(output_segment); | |
854 | ||
855 | output_segment->set_samplerate(get_input_samplerate(segment_id)); | |
856 | ||
857 | } else { | |
858 | // All segments have been processed | |
859 | logic_mux_data_invalid_ = false; | |
860 | ||
861 | // Wait for more input | |
862 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
863 | logic_mux_cond_.wait(logic_mux_lock); | |
864 | } | |
865 | } | |
866 | } while (!logic_mux_interrupt_); | |
867 | } | |
868 | ||
869 | void DecodeSignal::decode_data( | |
870 | const int64_t abs_start_samplenum, const int64_t sample_count, | |
871 | const shared_ptr<LogicSegment> input_segment) | |
872 | { | |
873 | const int64_t unit_size = input_segment->unit_size(); | |
874 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
875 | ||
876 | for (int64_t i = abs_start_samplenum; | |
877 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
878 | i += chunk_sample_count) { | |
879 | ||
880 | const int64_t chunk_end = min(i + chunk_sample_count, | |
881 | abs_start_samplenum + sample_count); | |
882 | ||
883 | int64_t data_size = (chunk_end - i) * unit_size; | |
884 | uint8_t* chunk = new uint8_t[data_size]; | |
885 | input_segment->get_samples(i, chunk_end, chunk); | |
886 | ||
887 | if (srd_session_send(srd_session_, i, chunk_end, chunk, | |
888 | data_size, unit_size) != SRD_OK) { | |
889 | error_message_ = tr("Decoder reported an error"); | |
890 | delete[] chunk; | |
891 | break; | |
892 | } | |
893 | ||
894 | delete[] chunk; | |
895 | ||
896 | { | |
897 | lock_guard<mutex> lock(output_mutex_); | |
898 | segments_.at(current_segment_id_).samples_decoded = chunk_end; | |
899 | } | |
900 | ||
901 | // Notify the frontend that we processed some data and | |
902 | // possibly have new annotations as well | |
903 | new_annotations(); | |
904 | } | |
905 | } | |
906 | ||
907 | void DecodeSignal::decode_proc() | |
908 | { | |
909 | current_segment_id_ = 0; | |
910 | ||
911 | // If there is no input data available yet, wait until it is or we're interrupted | |
912 | if (logic_mux_data_->logic_segments().size() == 0) { | |
913 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
914 | decode_input_cond_.wait(input_wait_lock); | |
915 | } | |
916 | ||
917 | if (decode_interrupt_) | |
918 | return; | |
919 | ||
920 | shared_ptr<LogicSegment> input_segment = logic_mux_data_->logic_segments().front(); | |
921 | assert(input_segment); | |
922 | ||
923 | // Create the initial segment and set its sample rate so that we can pass it to SRD | |
924 | create_decode_segment(); | |
925 | segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); | |
926 | segments_.at(current_segment_id_).start_time = input_segment->start_time(); | |
927 | ||
928 | start_srd_session(); | |
929 | ||
930 | uint64_t sample_count = 0; | |
931 | uint64_t abs_start_samplenum = 0; | |
932 | do { | |
933 | // Keep processing new samples until we exhaust the input data | |
934 | do { | |
935 | lock_guard<mutex> input_lock(input_mutex_); | |
936 | sample_count = input_segment->get_sample_count() - abs_start_samplenum; | |
937 | ||
938 | if (sample_count > 0) { | |
939 | decode_data(abs_start_samplenum, sample_count, input_segment); | |
940 | abs_start_samplenum += sample_count; | |
941 | } | |
942 | } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_); | |
943 | ||
944 | if (error_message_.isEmpty() && !decode_interrupt_ && sample_count == 0) { | |
945 | if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) { | |
946 | // Process next segment | |
947 | current_segment_id_++; | |
948 | ||
949 | try { | |
950 | input_segment = logic_mux_data_->logic_segments().at(current_segment_id_); | |
951 | } catch (out_of_range) { | |
952 | qDebug() << "Decode error for" << name() << ": no logic mux segment" \ | |
953 | << current_segment_id_ << "in decode_proc(), mux segments size is" \ | |
954 | << logic_mux_data_->logic_segments().size(); | |
955 | return; | |
956 | } | |
957 | abs_start_samplenum = 0; | |
958 | ||
959 | // Create the next segment and set its metadata | |
960 | create_decode_segment(); | |
961 | segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); | |
962 | segments_.at(current_segment_id_).start_time = input_segment->start_time(); | |
963 | ||
964 | // Reset decoder state | |
965 | stop_srd_session(); | |
966 | start_srd_session(); | |
967 | } else { | |
968 | // All segments have been processed | |
969 | decode_finished(); | |
970 | ||
971 | // Wait for new input data or an interrupt was requested | |
972 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
973 | decode_input_cond_.wait(input_wait_lock); | |
974 | } | |
975 | } | |
976 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
977 | } | |
978 | ||
979 | void DecodeSignal::start_srd_session() | |
980 | { | |
981 | uint64_t samplerate; | |
982 | ||
983 | if (srd_session_) | |
984 | stop_srd_session(); | |
985 | ||
986 | // Create the session | |
987 | srd_session_new(&srd_session_); | |
988 | assert(srd_session_); | |
989 | ||
990 | // Create the decoders | |
991 | srd_decoder_inst *prev_di = nullptr; | |
992 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
993 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
994 | ||
995 | if (!di) { | |
996 | error_message_ = tr("Failed to create decoder instance"); | |
997 | srd_session_destroy(srd_session_); | |
998 | srd_session_ = nullptr; | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | if (prev_di) | |
1003 | srd_inst_stack(srd_session_, prev_di, di); | |
1004 | ||
1005 | prev_di = di; | |
1006 | } | |
1007 | ||
1008 | // Start the session | |
1009 | samplerate = segments_.at(current_segment_id_).samplerate; | |
1010 | if (samplerate) | |
1011 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
1012 | g_variant_new_uint64(samplerate)); | |
1013 | ||
1014 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
1015 | DecodeSignal::annotation_callback, this); | |
1016 | ||
1017 | srd_session_start(srd_session_); | |
1018 | } | |
1019 | ||
1020 | void DecodeSignal::stop_srd_session() | |
1021 | { | |
1022 | if (srd_session_) { | |
1023 | // Destroy the session | |
1024 | srd_session_destroy(srd_session_); | |
1025 | srd_session_ = nullptr; | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | void DecodeSignal::connect_input_notifiers() | |
1030 | { | |
1031 | // Disconnect the notification slot from the previous set of signals | |
1032 | disconnect(this, SLOT(on_data_cleared())); | |
1033 | disconnect(this, SLOT(on_data_received())); | |
1034 | ||
1035 | // Connect the currently used signals to our slot | |
1036 | for (data::DecodeChannel &ch : channels_) { | |
1037 | if (!ch.assigned_signal) | |
1038 | continue; | |
1039 | ||
1040 | const data::SignalBase *signal = ch.assigned_signal; | |
1041 | connect(signal, SIGNAL(samples_cleared()), | |
1042 | this, SLOT(on_data_cleared())); | |
1043 | connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)), | |
1044 | this, SLOT(on_data_received())); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | void DecodeSignal::create_decode_segment() | |
1049 | { | |
1050 | // Create annotation segment | |
1051 | segments_.emplace_back(DecodeSegment()); | |
1052 | ||
1053 | // Add annotation classes | |
1054 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
1055 | assert(dec); | |
1056 | const srd_decoder *const decc = dec->decoder(); | |
1057 | assert(dec->decoder()); | |
1058 | ||
1059 | // Add a row for the decoder if it doesn't have a row list | |
1060 | if (!decc->annotation_rows) | |
1061 | (segments_.back().annotation_rows)[Row(decc)] = | |
1062 | decode::RowData(); | |
1063 | ||
1064 | // Add the decoder rows | |
1065 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
1066 | const srd_decoder_annotation_row *const ann_row = | |
1067 | (srd_decoder_annotation_row *)l->data; | |
1068 | assert(ann_row); | |
1069 | ||
1070 | const Row row(decc, ann_row); | |
1071 | ||
1072 | // Add a new empty row data object | |
1073 | (segments_.back().annotation_rows)[row] = | |
1074 | decode::RowData(); | |
1075 | } | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) | |
1080 | { | |
1081 | assert(pdata); | |
1082 | assert(decode_signal); | |
1083 | ||
1084 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
1085 | assert(ds); | |
1086 | ||
1087 | lock_guard<mutex> lock(ds->output_mutex_); | |
1088 | ||
1089 | // Find the row | |
1090 | assert(pdata->pdo); | |
1091 | assert(pdata->pdo->di); | |
1092 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
1093 | assert(decc); | |
1094 | ||
1095 | const srd_proto_data_annotation *const pda = | |
1096 | (const srd_proto_data_annotation*)pdata->data; | |
1097 | assert(pda); | |
1098 | ||
1099 | auto row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.end(); | |
1100 | ||
1101 | // Try looking up the sub-row of this class | |
1102 | const auto format = pda->ann_class; | |
1103 | const auto r = ds->class_rows_.find(make_pair(decc, format)); | |
1104 | if (r != ds->class_rows_.end()) | |
1105 | row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find((*r).second); | |
1106 | else { | |
1107 | // Failing that, use the decoder as a key | |
1108 | row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find(Row(decc)); | |
1109 | } | |
1110 | ||
1111 | if (row_iter == ds->segments_.at(ds->current_segment_id_).annotation_rows.end()) { | |
1112 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
1113 | ", format = " << format; | |
1114 | assert(false); | |
1115 | return; | |
1116 | } | |
1117 | ||
1118 | // Add the annotation | |
1119 | (*row_iter).second.emplace_annotation(pdata); | |
1120 | } | |
1121 | ||
1122 | void DecodeSignal::on_capture_state_changed(int state) | |
1123 | { | |
1124 | // If a new acquisition was started, we need to start decoding from scratch | |
1125 | if (state == Session::Running) { | |
1126 | logic_mux_data_invalid_ = true; | |
1127 | begin_decode(); | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | void DecodeSignal::on_data_cleared() | |
1132 | { | |
1133 | reset_decode(); | |
1134 | } | |
1135 | ||
1136 | void DecodeSignal::on_data_received() | |
1137 | { | |
1138 | if (!logic_mux_thread_.joinable()) | |
1139 | begin_decode(); | |
1140 | else | |
1141 | logic_mux_cond_.notify_one(); | |
1142 | } | |
1143 | ||
1144 | } // namespace data | |
1145 | } // namespace pv |