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