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