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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 <cstring> | |
21 | #include <forward_list> | |
22 | #include <limits> | |
23 | ||
24 | #include <QDebug> | |
25 | ||
26 | #include "logic.hpp" | |
27 | #include "logicsegment.hpp" | |
28 | #include "decodesignal.hpp" | |
29 | #include "signaldata.hpp" | |
30 | ||
31 | #include <pv/data/decode/decoder.hpp> | |
32 | #include <pv/data/decode/row.hpp> | |
33 | #include <pv/globalsettings.hpp> | |
34 | #include <pv/session.hpp> | |
35 | ||
36 | using std::forward_list; | |
37 | using std::lock_guard; | |
38 | using std::make_pair; | |
39 | using std::make_shared; | |
40 | using std::min; | |
41 | using std::out_of_range; | |
42 | using std::shared_ptr; | |
43 | using std::unique_lock; | |
44 | using pv::data::decode::Annotation; | |
45 | using pv::data::decode::DecodeChannel; | |
46 | using pv::data::decode::Decoder; | |
47 | using pv::data::decode::Row; | |
48 | ||
49 | namespace pv { | |
50 | namespace data { | |
51 | ||
52 | const double DecodeSignal::DecodeMargin = 1.0; | |
53 | const double DecodeSignal::DecodeThreshold = 0.2; | |
54 | const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024; | |
55 | ||
56 | ||
57 | DecodeSignal::DecodeSignal(pv::Session &session) : | |
58 | SignalBase(nullptr, SignalBase::DecodeChannel), | |
59 | session_(session), | |
60 | srd_session_(nullptr), | |
61 | logic_mux_data_invalid_(false), | |
62 | stack_config_changed_(true), | |
63 | current_segment_id_(0) | |
64 | { | |
65 | connect(&session_, SIGNAL(capture_state_changed(int)), | |
66 | this, SLOT(on_capture_state_changed(int))); | |
67 | } | |
68 | ||
69 | DecodeSignal::~DecodeSignal() | |
70 | { | |
71 | reset_decode(true); | |
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 | ||
83 | // Set name if this decoder is the first in the list or the name is unchanged | |
84 | const srd_decoder* prev_dec = | |
85 | stack_.empty() ? nullptr : stack_.back()->decoder(); | |
86 | const QString prev_dec_name = | |
87 | prev_dec ? QString::fromUtf8(prev_dec->name) : QString(); | |
88 | ||
89 | if ((stack_.empty()) || ((stack_.size() > 0) && (name() == prev_dec_name))) | |
90 | set_name(QString::fromUtf8(decoder->name)); | |
91 | ||
92 | const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder); | |
93 | stack_.push_back(dec); | |
94 | ||
95 | // Include the newly created decode channels in the channel lists | |
96 | update_channel_list(); | |
97 | ||
98 | stack_config_changed_ = true; | |
99 | auto_assign_signals(dec); | |
100 | commit_decoder_channels(); | |
101 | ||
102 | decoder_stacked((void*)dec.get()); | |
103 | ||
104 | begin_decode(); | |
105 | } | |
106 | ||
107 | void DecodeSignal::remove_decoder(int index) | |
108 | { | |
109 | assert(index >= 0); | |
110 | assert(index < (int)stack_.size()); | |
111 | ||
112 | // Find the decoder in the stack | |
113 | auto iter = stack_.begin(); | |
114 | for (int i = 0; i < index; i++, iter++) | |
115 | assert(iter != stack_.end()); | |
116 | ||
117 | decoder_removed(iter->get()); | |
118 | ||
119 | // Delete the element | |
120 | stack_.erase(iter); | |
121 | ||
122 | // Update channels and decoded data | |
123 | stack_config_changed_ = true; | |
124 | update_channel_list(); | |
125 | begin_decode(); | |
126 | } | |
127 | ||
128 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
129 | { | |
130 | auto iter = stack_.cbegin(); | |
131 | for (int i = 0; i < index; i++, iter++) | |
132 | assert(iter != stack_.end()); | |
133 | ||
134 | shared_ptr<Decoder> dec = *iter; | |
135 | ||
136 | // Toggle decoder visibility | |
137 | bool state = false; | |
138 | if (dec) { | |
139 | state = !dec->shown(); | |
140 | dec->show(state); | |
141 | } | |
142 | ||
143 | return state; | |
144 | } | |
145 | ||
146 | void DecodeSignal::reset_decode(bool shutting_down) | |
147 | { | |
148 | if (stack_config_changed_ || shutting_down) | |
149 | stop_srd_session(); | |
150 | else | |
151 | terminate_srd_session(); | |
152 | ||
153 | if (decode_thread_.joinable()) { | |
154 | decode_interrupt_ = true; | |
155 | decode_input_cond_.notify_one(); | |
156 | decode_thread_.join(); | |
157 | } | |
158 | ||
159 | if (logic_mux_thread_.joinable()) { | |
160 | logic_mux_interrupt_ = true; | |
161 | logic_mux_cond_.notify_one(); | |
162 | logic_mux_thread_.join(); | |
163 | } | |
164 | ||
165 | resume_decode(); // Make sure the decode thread isn't blocked by pausing | |
166 | ||
167 | class_rows_.clear(); | |
168 | current_segment_id_ = 0; | |
169 | segments_.clear(); | |
170 | ||
171 | logic_mux_data_.reset(); | |
172 | logic_mux_data_invalid_ = true; | |
173 | ||
174 | if (!error_message_.isEmpty()) { | |
175 | error_message_ = QString(); | |
176 | // TODO Emulate noquote() | |
177 | qDebug().nospace() << name() << ": Error cleared"; | |
178 | } | |
179 | ||
180 | decode_reset(); | |
181 | } | |
182 | ||
183 | void DecodeSignal::begin_decode() | |
184 | { | |
185 | if (decode_thread_.joinable()) { | |
186 | decode_interrupt_ = true; | |
187 | decode_input_cond_.notify_one(); | |
188 | decode_thread_.join(); | |
189 | } | |
190 | ||
191 | if (logic_mux_thread_.joinable()) { | |
192 | logic_mux_interrupt_ = true; | |
193 | logic_mux_cond_.notify_one(); | |
194 | logic_mux_thread_.join(); | |
195 | } | |
196 | ||
197 | reset_decode(); | |
198 | ||
199 | if (stack_.size() == 0) { | |
200 | set_error_message(tr("No decoders")); | |
201 | return; | |
202 | } | |
203 | ||
204 | assert(channels_.size() > 0); | |
205 | ||
206 | if (get_assigned_signal_count() == 0) { | |
207 | set_error_message(tr("There are no channels assigned to this decoder")); | |
208 | return; | |
209 | } | |
210 | ||
211 | // Make sure that all assigned channels still provide logic data | |
212 | // (can happen when a converted signal was assigned but the | |
213 | // conversion removed in the meanwhile) | |
214 | for (decode::DecodeChannel& ch : channels_) | |
215 | if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr)) | |
216 | ch.assigned_signal = nullptr; | |
217 | ||
218 | // Check that all decoders have the required channels | |
219 | for (const shared_ptr<decode::Decoder>& dec : stack_) | |
220 | if (!dec->have_required_channels()) { | |
221 | set_error_message(tr("One or more required channels " | |
222 | "have not been specified")); | |
223 | return; | |
224 | } | |
225 | ||
226 | // Map out all the annotation classes | |
227 | int row_index = 0; | |
228 | for (const shared_ptr<decode::Decoder>& dec : stack_) { | |
229 | assert(dec); | |
230 | const srd_decoder *const decc = dec->decoder(); | |
231 | assert(dec->decoder()); | |
232 | ||
233 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
234 | const srd_decoder_annotation_row *const ann_row = | |
235 | (srd_decoder_annotation_row *)l->data; | |
236 | assert(ann_row); | |
237 | ||
238 | const Row row(row_index++, decc, ann_row); | |
239 | ||
240 | for (const GSList *ll = ann_row->ann_classes; | |
241 | ll; ll = ll->next) | |
242 | class_rows_[make_pair(decc, | |
243 | GPOINTER_TO_INT(ll->data))] = row; | |
244 | } | |
245 | } | |
246 | ||
247 | // Free the logic data and its segment(s) if it needs to be updated | |
248 | if (logic_mux_data_invalid_) | |
249 | logic_mux_data_.reset(); | |
250 | ||
251 | if (!logic_mux_data_) { | |
252 | const uint32_t ch_count = get_assigned_signal_count(); | |
253 | logic_mux_unit_size_ = (ch_count + 7) / 8; | |
254 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
255 | } | |
256 | ||
257 | // Receive notifications when new sample data is available | |
258 | connect_input_notifiers(); | |
259 | ||
260 | if (get_input_segment_count() == 0) { | |
261 | set_error_message(tr("No input data")); | |
262 | return; | |
263 | } | |
264 | ||
265 | // Make sure the logic output data is complete and up-to-date | |
266 | logic_mux_interrupt_ = false; | |
267 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
268 | ||
269 | // Decode the muxed logic data | |
270 | decode_interrupt_ = false; | |
271 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
272 | } | |
273 | ||
274 | void DecodeSignal::pause_decode() | |
275 | { | |
276 | decode_paused_ = true; | |
277 | } | |
278 | ||
279 | void DecodeSignal::resume_decode() | |
280 | { | |
281 | // Manual unlocking is done before notifying, to avoid waking up the | |
282 | // waiting thread only to block again (see notify_one for details) | |
283 | decode_pause_mutex_.unlock(); | |
284 | decode_pause_cond_.notify_one(); | |
285 | decode_paused_ = false; | |
286 | } | |
287 | ||
288 | bool DecodeSignal::is_paused() const | |
289 | { | |
290 | return decode_paused_; | |
291 | } | |
292 | ||
293 | QString DecodeSignal::error_message() const | |
294 | { | |
295 | lock_guard<mutex> lock(output_mutex_); | |
296 | return error_message_; | |
297 | } | |
298 | ||
299 | const vector<decode::DecodeChannel> DecodeSignal::get_channels() const | |
300 | { | |
301 | return channels_; | |
302 | } | |
303 | ||
304 | void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec) | |
305 | { | |
306 | bool new_assignment = false; | |
307 | ||
308 | // Try to auto-select channels that don't have signals assigned yet | |
309 | for (decode::DecodeChannel& ch : channels_) { | |
310 | // If a decoder is given, auto-assign only its channels | |
311 | if (dec && (ch.decoder_ != dec)) | |
312 | continue; | |
313 | ||
314 | if (ch.assigned_signal) | |
315 | continue; | |
316 | ||
317 | QString ch_name = ch.name.toLower(); | |
318 | ch_name = ch_name.replace(QRegExp("[-_.]"), " "); | |
319 | ||
320 | shared_ptr<data::SignalBase> match; | |
321 | for (const shared_ptr<data::SignalBase>& s : session_.signalbases()) { | |
322 | if (!s->enabled()) | |
323 | continue; | |
324 | ||
325 | QString s_name = s->name().toLower(); | |
326 | s_name = s_name.replace(QRegExp("[-_.]"), " "); | |
327 | ||
328 | if (s->logic_data() && | |
329 | ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) { | |
330 | if (!match) | |
331 | match = s; | |
332 | else { | |
333 | // Only replace an existing match if it matches more characters | |
334 | int old_unmatched = ch_name.length() - match->name().length(); | |
335 | int new_unmatched = ch_name.length() - s->name().length(); | |
336 | if (abs(new_unmatched) < abs(old_unmatched)) | |
337 | match = s; | |
338 | } | |
339 | } | |
340 | } | |
341 | ||
342 | if (match) { | |
343 | ch.assigned_signal = match.get(); | |
344 | new_assignment = true; | |
345 | } | |
346 | } | |
347 | ||
348 | if (new_assignment) { | |
349 | logic_mux_data_invalid_ = true; | |
350 | stack_config_changed_ = true; | |
351 | commit_decoder_channels(); | |
352 | channels_updated(); | |
353 | } | |
354 | } | |
355 | ||
356 | void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal) | |
357 | { | |
358 | for (decode::DecodeChannel& ch : channels_) | |
359 | if (ch.id == channel_id) { | |
360 | ch.assigned_signal = signal; | |
361 | logic_mux_data_invalid_ = true; | |
362 | } | |
363 | ||
364 | stack_config_changed_ = true; | |
365 | commit_decoder_channels(); | |
366 | channels_updated(); | |
367 | begin_decode(); | |
368 | } | |
369 | ||
370 | int DecodeSignal::get_assigned_signal_count() const | |
371 | { | |
372 | // Count all channels that have a signal assigned to them | |
373 | return count_if(channels_.begin(), channels_.end(), | |
374 | [](decode::DecodeChannel ch) { return ch.assigned_signal; }); | |
375 | } | |
376 | ||
377 | void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state) | |
378 | { | |
379 | for (decode::DecodeChannel& ch : channels_) | |
380 | if (ch.id == channel_id) | |
381 | ch.initial_pin_state = init_state; | |
382 | ||
383 | stack_config_changed_ = true; | |
384 | channels_updated(); | |
385 | begin_decode(); | |
386 | } | |
387 | ||
388 | double DecodeSignal::samplerate() const | |
389 | { | |
390 | double result = 0; | |
391 | ||
392 | // TODO For now, we simply return the first samplerate that we have | |
393 | if (segments_.size() > 0) | |
394 | result = segments_.front().samplerate; | |
395 | ||
396 | return result; | |
397 | } | |
398 | ||
399 | const pv::util::Timestamp DecodeSignal::start_time() const | |
400 | { | |
401 | pv::util::Timestamp result; | |
402 | ||
403 | // TODO For now, we simply return the first start time that we have | |
404 | if (segments_.size() > 0) | |
405 | result = segments_.front().start_time; | |
406 | ||
407 | return result; | |
408 | } | |
409 | ||
410 | int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const | |
411 | { | |
412 | // The working sample count is the highest sample number for | |
413 | // which all used signals have data available, so go through all | |
414 | // channels and use the lowest overall sample count of the segment | |
415 | ||
416 | int64_t count = std::numeric_limits<int64_t>::max(); | |
417 | bool no_signals_assigned = true; | |
418 | ||
419 | for (const decode::DecodeChannel& ch : channels_) | |
420 | if (ch.assigned_signal) { | |
421 | no_signals_assigned = false; | |
422 | ||
423 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
424 | if (!logic_data || logic_data->logic_segments().empty()) | |
425 | return 0; | |
426 | ||
427 | try { | |
428 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id); | |
429 | count = min(count, (int64_t)segment->get_sample_count()); | |
430 | } catch (out_of_range&) { | |
431 | return 0; | |
432 | } | |
433 | } | |
434 | ||
435 | return (no_signals_assigned ? 0 : count); | |
436 | } | |
437 | ||
438 | int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id, | |
439 | bool include_processing) const | |
440 | { | |
441 | lock_guard<mutex> decode_lock(output_mutex_); | |
442 | ||
443 | int64_t result = 0; | |
444 | ||
445 | if (segment_id >= segments_.size()) | |
446 | return result; | |
447 | ||
448 | if (include_processing) | |
449 | result = segments_[segment_id].samples_decoded_incl; | |
450 | else | |
451 | result = segments_[segment_id].samples_decoded_excl; | |
452 | ||
453 | return result; | |
454 | } | |
455 | ||
456 | vector<Row> DecodeSignal::get_rows(bool visible_only) const | |
457 | { | |
458 | lock_guard<mutex> lock(output_mutex_); | |
459 | ||
460 | vector<Row> rows; | |
461 | ||
462 | for (const shared_ptr<decode::Decoder>& dec : stack_) { | |
463 | assert(dec); | |
464 | if (visible_only && !dec->shown()) | |
465 | continue; | |
466 | ||
467 | const srd_decoder *const decc = dec->decoder(); | |
468 | assert(dec->decoder()); | |
469 | ||
470 | int row_index = 0; | |
471 | // Add a row for the decoder if it doesn't have a row list | |
472 | if (!decc->annotation_rows) | |
473 | rows.emplace_back(row_index++, decc); | |
474 | ||
475 | // Add the decoder rows | |
476 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
477 | const srd_decoder_annotation_row *const ann_row = | |
478 | (srd_decoder_annotation_row *)l->data; | |
479 | assert(ann_row); | |
480 | rows.emplace_back(row_index++, decc, ann_row); | |
481 | } | |
482 | } | |
483 | ||
484 | return rows; | |
485 | } | |
486 | ||
487 | void DecodeSignal::get_annotation_subset( | |
488 | vector<pv::data::decode::Annotation> &dest, | |
489 | const decode::Row &row, uint32_t segment_id, uint64_t start_sample, | |
490 | uint64_t end_sample) const | |
491 | { | |
492 | lock_guard<mutex> lock(output_mutex_); | |
493 | ||
494 | if (segment_id >= segments_.size()) | |
495 | return; | |
496 | ||
497 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
498 | const map<const decode::Row, decode::RowData> *rows = | |
499 | &(segment->annotation_rows); | |
500 | ||
501 | const auto iter = rows->find(row); | |
502 | if (iter != rows->end()) | |
503 | (*iter).second.get_annotation_subset(dest, start_sample, end_sample); | |
504 | } | |
505 | ||
506 | void DecodeSignal::get_annotation_subset( | |
507 | vector<pv::data::decode::Annotation> &dest, | |
508 | uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const | |
509 | { | |
510 | // Note: We put all vectors and lists on the heap, not the stack | |
511 | ||
512 | const vector<Row> rows = get_rows(true); | |
513 | ||
514 | // Use forward_lists for faster merging | |
515 | forward_list<Annotation> *all_ann_list = new forward_list<Annotation>(); | |
516 | ||
517 | for (const Row& row : rows) { | |
518 | vector<Annotation> *ann_vector = new vector<Annotation>(); | |
519 | get_annotation_subset(*ann_vector, row, segment_id, start_sample, end_sample); | |
520 | ||
521 | forward_list<Annotation> *ann_list = | |
522 | new forward_list<Annotation>(ann_vector->begin(), ann_vector->end()); | |
523 | delete ann_vector; | |
524 | ||
525 | all_ann_list->merge(*ann_list); | |
526 | delete ann_list; | |
527 | } | |
528 | ||
529 | move(all_ann_list->begin(), all_ann_list->end(), back_inserter(dest)); | |
530 | delete all_ann_list; | |
531 | } | |
532 | ||
533 | uint32_t DecodeSignal::get_binary_data_chunk_count(uint32_t segment_id, | |
534 | const Decoder* dec, uint32_t bin_class_id) const | |
535 | { | |
536 | if (segments_.size() == 0) | |
537 | return 0; | |
538 | ||
539 | try { | |
540 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
541 | ||
542 | for (const DecodeBinaryClass& bc : segment->binary_classes) | |
543 | if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) | |
544 | return bc.chunks.size(); | |
545 | } catch (out_of_range&) { | |
546 | // Do nothing | |
547 | } | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
552 | void DecodeSignal::get_binary_data_chunk(uint32_t segment_id, | |
553 | const Decoder* dec, uint32_t bin_class_id, uint32_t chunk_id, | |
554 | const vector<uint8_t> **dest, uint64_t *size) | |
555 | { | |
556 | try { | |
557 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
558 | ||
559 | for (const DecodeBinaryClass& bc : segment->binary_classes) | |
560 | if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) { | |
561 | if (dest) *dest = &(bc.chunks.at(chunk_id).data); | |
562 | if (size) *size = bc.chunks.at(chunk_id).data.size(); | |
563 | return; | |
564 | } | |
565 | } catch (out_of_range&) { | |
566 | // Do nothing | |
567 | } | |
568 | } | |
569 | ||
570 | void DecodeSignal::get_binary_data_chunks_merged(uint32_t segment_id, | |
571 | const Decoder* dec, uint32_t bin_class_id, uint64_t start_sample, | |
572 | uint64_t end_sample, vector<uint8_t> *dest) const | |
573 | { | |
574 | assert(dest != nullptr); | |
575 | ||
576 | try { | |
577 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
578 | ||
579 | const DecodeBinaryClass* bin_class = nullptr; | |
580 | for (const DecodeBinaryClass& bc : segment->binary_classes) | |
581 | if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) | |
582 | bin_class = &bc; | |
583 | ||
584 | // Determine overall size before copying to resize dest vector only once | |
585 | uint64_t size = 0; | |
586 | uint64_t matches = 0; | |
587 | for (const DecodeBinaryDataChunk& chunk : bin_class->chunks) | |
588 | if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) { | |
589 | size += chunk.data.size(); | |
590 | matches++; | |
591 | } | |
592 | dest->resize(size); | |
593 | ||
594 | uint64_t offset = 0; | |
595 | uint64_t matches2 = 0; | |
596 | for (const DecodeBinaryDataChunk& chunk : bin_class->chunks) | |
597 | if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) { | |
598 | memcpy(dest->data() + offset, chunk.data.data(), chunk.data.size()); | |
599 | offset += chunk.data.size(); | |
600 | matches2++; | |
601 | ||
602 | // Make sure we don't overwrite memory if the array grew in the meanwhile | |
603 | if (matches2 == matches) | |
604 | break; | |
605 | } | |
606 | } catch (out_of_range&) { | |
607 | // Do nothing | |
608 | } | |
609 | } | |
610 | ||
611 | const DecodeBinaryClass* DecodeSignal::get_binary_data_class(uint32_t segment_id, | |
612 | const data::decode::Decoder* dec, uint32_t bin_class_id) const | |
613 | { | |
614 | try { | |
615 | const DecodeSegment *segment = &(segments_.at(segment_id)); | |
616 | ||
617 | for (const DecodeBinaryClass& bc : segment->binary_classes) | |
618 | if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) | |
619 | return &bc; | |
620 | } catch (out_of_range&) { | |
621 | // Do nothing | |
622 | } | |
623 | ||
624 | return nullptr; | |
625 | } | |
626 | ||
627 | void DecodeSignal::save_settings(QSettings &settings) const | |
628 | { | |
629 | SignalBase::save_settings(settings); | |
630 | ||
631 | settings.setValue("decoders", (int)(stack_.size())); | |
632 | ||
633 | // Save decoder stack | |
634 | int decoder_idx = 0; | |
635 | for (const shared_ptr<decode::Decoder>& decoder : stack_) { | |
636 | settings.beginGroup("decoder" + QString::number(decoder_idx++)); | |
637 | ||
638 | settings.setValue("id", decoder->decoder()->id); | |
639 | settings.setValue("shown", decoder->shown()); | |
640 | ||
641 | // Save decoder options | |
642 | const map<string, GVariant*>& options = decoder->options(); | |
643 | ||
644 | settings.setValue("options", (int)options.size()); | |
645 | ||
646 | // Note: decode::Decoder::options() returns only the options | |
647 | // that differ from the default. See binding::Decoder::getter() | |
648 | int i = 0; | |
649 | for (auto& option : options) { | |
650 | settings.beginGroup("option" + QString::number(i)); | |
651 | settings.setValue("name", QString::fromStdString(option.first)); | |
652 | GlobalSettings::store_gvariant(settings, option.second); | |
653 | settings.endGroup(); | |
654 | i++; | |
655 | } | |
656 | ||
657 | settings.endGroup(); | |
658 | } | |
659 | ||
660 | // Save channel mapping | |
661 | settings.setValue("channels", (int)channels_.size()); | |
662 | ||
663 | for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) { | |
664 | auto channel = find_if(channels_.begin(), channels_.end(), | |
665 | [&](decode::DecodeChannel ch) { return ch.id == channel_id; }); | |
666 | ||
667 | if (channel == channels_.end()) { | |
668 | qDebug() << "ERROR: Gap in channel index:" << channel_id; | |
669 | continue; | |
670 | } | |
671 | ||
672 | settings.beginGroup("channel" + QString::number(channel_id)); | |
673 | ||
674 | settings.setValue("name", channel->name); // Useful for debugging | |
675 | settings.setValue("initial_pin_state", channel->initial_pin_state); | |
676 | ||
677 | if (channel->assigned_signal) | |
678 | settings.setValue("assigned_signal_name", channel->assigned_signal->name()); | |
679 | ||
680 | settings.endGroup(); | |
681 | } | |
682 | } | |
683 | ||
684 | void DecodeSignal::restore_settings(QSettings &settings) | |
685 | { | |
686 | SignalBase::restore_settings(settings); | |
687 | ||
688 | // Restore decoder stack | |
689 | GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list()); | |
690 | ||
691 | int decoders = settings.value("decoders").toInt(); | |
692 | ||
693 | for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) { | |
694 | settings.beginGroup("decoder" + QString::number(decoder_idx)); | |
695 | ||
696 | QString id = settings.value("id").toString(); | |
697 | ||
698 | for (GSList *entry = dec_list; entry; entry = entry->next) { | |
699 | const srd_decoder *dec = (srd_decoder*)entry->data; | |
700 | if (!dec) | |
701 | continue; | |
702 | ||
703 | if (QString::fromUtf8(dec->id) == id) { | |
704 | shared_ptr<decode::Decoder> decoder = | |
705 | make_shared<decode::Decoder>(dec); | |
706 | ||
707 | stack_.push_back(decoder); | |
708 | decoder->show(settings.value("shown", true).toBool()); | |
709 | ||
710 | // Restore decoder options that differ from their default | |
711 | int options = settings.value("options").toInt(); | |
712 | ||
713 | for (int i = 0; i < options; i++) { | |
714 | settings.beginGroup("option" + QString::number(i)); | |
715 | QString name = settings.value("name").toString(); | |
716 | GVariant *value = GlobalSettings::restore_gvariant(settings); | |
717 | decoder->set_option(name.toUtf8(), value); | |
718 | settings.endGroup(); | |
719 | } | |
720 | ||
721 | // Include the newly created decode channels in the channel lists | |
722 | update_channel_list(); | |
723 | break; | |
724 | } | |
725 | } | |
726 | ||
727 | settings.endGroup(); | |
728 | channels_updated(); | |
729 | } | |
730 | ||
731 | // Restore channel mapping | |
732 | unsigned int channels = settings.value("channels").toInt(); | |
733 | ||
734 | const unordered_set< shared_ptr<data::SignalBase> > signalbases = | |
735 | session_.signalbases(); | |
736 | ||
737 | for (unsigned int channel_id = 0; channel_id < channels; channel_id++) { | |
738 | auto channel = find_if(channels_.begin(), channels_.end(), | |
739 | [&](decode::DecodeChannel ch) { return ch.id == channel_id; }); | |
740 | ||
741 | if (channel == channels_.end()) { | |
742 | qDebug() << "ERROR: Non-existant channel index:" << channel_id; | |
743 | continue; | |
744 | } | |
745 | ||
746 | settings.beginGroup("channel" + QString::number(channel_id)); | |
747 | ||
748 | QString assigned_signal_name = settings.value("assigned_signal_name").toString(); | |
749 | ||
750 | for (const shared_ptr<data::SignalBase>& signal : signalbases) | |
751 | if (signal->name() == assigned_signal_name) | |
752 | channel->assigned_signal = signal.get(); | |
753 | ||
754 | channel->initial_pin_state = settings.value("initial_pin_state").toInt(); | |
755 | ||
756 | settings.endGroup(); | |
757 | } | |
758 | ||
759 | // Update the internal structures | |
760 | stack_config_changed_ = true; | |
761 | update_channel_list(); | |
762 | commit_decoder_channels(); | |
763 | ||
764 | begin_decode(); | |
765 | } | |
766 | ||
767 | void DecodeSignal::set_error_message(QString msg) | |
768 | { | |
769 | error_message_ = msg; | |
770 | // TODO Emulate noquote() | |
771 | qDebug().nospace() << name() << ": " << msg; | |
772 | } | |
773 | ||
774 | uint32_t DecodeSignal::get_input_segment_count() const | |
775 | { | |
776 | uint64_t count = std::numeric_limits<uint64_t>::max(); | |
777 | bool no_signals_assigned = true; | |
778 | ||
779 | for (const decode::DecodeChannel& ch : channels_) | |
780 | if (ch.assigned_signal) { | |
781 | no_signals_assigned = false; | |
782 | ||
783 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
784 | if (!logic_data || logic_data->logic_segments().empty()) | |
785 | return 0; | |
786 | ||
787 | // Find the min value of all segment counts | |
788 | if ((uint64_t)(logic_data->logic_segments().size()) < count) | |
789 | count = logic_data->logic_segments().size(); | |
790 | } | |
791 | ||
792 | return (no_signals_assigned ? 0 : count); | |
793 | } | |
794 | ||
795 | uint32_t DecodeSignal::get_input_samplerate(uint32_t segment_id) const | |
796 | { | |
797 | double samplerate = 0; | |
798 | ||
799 | for (const decode::DecodeChannel& ch : channels_) | |
800 | if (ch.assigned_signal) { | |
801 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
802 | if (!logic_data || logic_data->logic_segments().empty()) | |
803 | continue; | |
804 | ||
805 | try { | |
806 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id); | |
807 | samplerate = segment->samplerate(); | |
808 | } catch (out_of_range&) { | |
809 | // Do nothing | |
810 | } | |
811 | break; | |
812 | } | |
813 | ||
814 | return samplerate; | |
815 | } | |
816 | ||
817 | void DecodeSignal::update_channel_list() | |
818 | { | |
819 | vector<decode::DecodeChannel> prev_channels = channels_; | |
820 | channels_.clear(); | |
821 | ||
822 | uint16_t id = 0; | |
823 | ||
824 | // Copy existing entries, create new as needed | |
825 | for (shared_ptr<Decoder>& decoder : stack_) { | |
826 | const srd_decoder* srd_d = decoder->decoder(); | |
827 | const GSList *l; | |
828 | ||
829 | // Mandatory channels | |
830 | for (l = srd_d->channels; l; l = l->next) { | |
831 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
832 | bool ch_added = false; | |
833 | ||
834 | // Copy but update ID if this channel was in the list before | |
835 | for (decode::DecodeChannel& ch : prev_channels) | |
836 | if (ch.pdch_ == pdch) { | |
837 | ch.id = id++; | |
838 | channels_.push_back(ch); | |
839 | ch_added = true; | |
840 | break; | |
841 | } | |
842 | ||
843 | if (!ch_added) { | |
844 | // Create new entry without a mapped signal | |
845 | decode::DecodeChannel ch = {id++, 0, false, nullptr, | |
846 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
847 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
848 | channels_.push_back(ch); | |
849 | } | |
850 | } | |
851 | ||
852 | // Optional channels | |
853 | for (l = srd_d->opt_channels; l; l = l->next) { | |
854 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
855 | bool ch_added = false; | |
856 | ||
857 | // Copy but update ID if this channel was in the list before | |
858 | for (decode::DecodeChannel& ch : prev_channels) | |
859 | if (ch.pdch_ == pdch) { | |
860 | ch.id = id++; | |
861 | channels_.push_back(ch); | |
862 | ch_added = true; | |
863 | break; | |
864 | } | |
865 | ||
866 | if (!ch_added) { | |
867 | // Create new entry without a mapped signal | |
868 | decode::DecodeChannel ch = {id++, 0, true, nullptr, | |
869 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
870 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
871 | channels_.push_back(ch); | |
872 | } | |
873 | } | |
874 | } | |
875 | ||
876 | // Invalidate the logic output data if the channel assignment changed | |
877 | if (prev_channels.size() != channels_.size()) { | |
878 | // The number of channels changed, there's definitely a difference | |
879 | logic_mux_data_invalid_ = true; | |
880 | } else { | |
881 | // Same number but assignment may still differ, so compare all channels | |
882 | for (size_t i = 0; i < channels_.size(); i++) { | |
883 | const decode::DecodeChannel& p_ch = prev_channels[i]; | |
884 | const decode::DecodeChannel& ch = channels_[i]; | |
885 | ||
886 | if ((p_ch.pdch_ != ch.pdch_) || | |
887 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
888 | logic_mux_data_invalid_ = true; | |
889 | break; | |
890 | } | |
891 | } | |
892 | ||
893 | } | |
894 | ||
895 | channels_updated(); | |
896 | } | |
897 | ||
898 | void DecodeSignal::commit_decoder_channels() | |
899 | { | |
900 | // Submit channel list to every decoder, containing only the relevant channels | |
901 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
902 | vector<decode::DecodeChannel*> channel_list; | |
903 | ||
904 | for (decode::DecodeChannel& ch : channels_) | |
905 | if (ch.decoder_ == dec) | |
906 | channel_list.push_back(&ch); | |
907 | ||
908 | dec->set_channels(channel_list); | |
909 | } | |
910 | ||
911 | // Channel bit IDs must be in sync with the channel's apperance in channels_ | |
912 | int id = 0; | |
913 | for (decode::DecodeChannel& ch : channels_) | |
914 | if (ch.assigned_signal) | |
915 | ch.bit_id = id++; | |
916 | } | |
917 | ||
918 | void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end) | |
919 | { | |
920 | // Enforce end to be greater than start | |
921 | if (end <= start) | |
922 | return; | |
923 | ||
924 | // Fetch the channel segments and their data | |
925 | vector<shared_ptr<LogicSegment> > segments; | |
926 | vector<const uint8_t*> signal_data; | |
927 | vector<uint8_t> signal_in_bytepos; | |
928 | vector<uint8_t> signal_in_bitpos; | |
929 | ||
930 | for (decode::DecodeChannel& ch : channels_) | |
931 | if (ch.assigned_signal) { | |
932 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
933 | ||
934 | shared_ptr<LogicSegment> segment; | |
935 | try { | |
936 | segment = logic_data->logic_segments().at(segment_id); | |
937 | } catch (out_of_range&) { | |
938 | qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \ | |
939 | << "has no logic segment" << segment_id; | |
940 | return; | |
941 | } | |
942 | segments.push_back(segment); | |
943 | ||
944 | uint8_t* data = new uint8_t[(end - start) * segment->unit_size()]; | |
945 | segment->get_samples(start, end, data); | |
946 | signal_data.push_back(data); | |
947 | ||
948 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
949 | signal_in_bytepos.push_back(bitpos / 8); | |
950 | signal_in_bitpos.push_back(bitpos % 8); | |
951 | } | |
952 | ||
953 | ||
954 | shared_ptr<LogicSegment> output_segment; | |
955 | try { | |
956 | output_segment = logic_mux_data_->logic_segments().at(segment_id); | |
957 | } catch (out_of_range&) { | |
958 | qDebug() << "Muxer error for" << name() << ": no logic mux segment" \ | |
959 | << segment_id << "in mux_logic_samples(), mux segments size is" \ | |
960 | << logic_mux_data_->logic_segments().size(); | |
961 | return; | |
962 | } | |
963 | ||
964 | // Perform the muxing of signal data into the output data | |
965 | uint8_t* output = new uint8_t[(end - start) * output_segment->unit_size()]; | |
966 | unsigned int signal_count = signal_data.size(); | |
967 | ||
968 | for (int64_t sample_cnt = 0; !logic_mux_interrupt_ && (sample_cnt < (end - start)); | |
969 | sample_cnt++) { | |
970 | ||
971 | int bitpos = 0; | |
972 | uint8_t bytepos = 0; | |
973 | ||
974 | const int out_sample_pos = sample_cnt * output_segment->unit_size(); | |
975 | for (unsigned int i = 0; i < output_segment->unit_size(); i++) | |
976 | output[out_sample_pos + i] = 0; | |
977 | ||
978 | for (unsigned int i = 0; i < signal_count; i++) { | |
979 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
980 | const uint8_t in_sample = 1 & | |
981 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
982 | ||
983 | const uint8_t out_sample = output[out_sample_pos + bytepos]; | |
984 | ||
985 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
986 | ||
987 | bitpos++; | |
988 | if (bitpos > 7) { | |
989 | bitpos = 0; | |
990 | bytepos++; | |
991 | } | |
992 | } | |
993 | } | |
994 | ||
995 | output_segment->append_payload(output, (end - start) * output_segment->unit_size()); | |
996 | delete[] output; | |
997 | ||
998 | for (const uint8_t* data : signal_data) | |
999 | delete[] data; | |
1000 | } | |
1001 | ||
1002 | void DecodeSignal::logic_mux_proc() | |
1003 | { | |
1004 | uint32_t segment_id = 0; | |
1005 | ||
1006 | assert(logic_mux_data_); | |
1007 | ||
1008 | // Create initial logic mux segment | |
1009 | shared_ptr<LogicSegment> output_segment = | |
1010 | make_shared<LogicSegment>(*logic_mux_data_, segment_id, | |
1011 | logic_mux_unit_size_, 0); | |
1012 | logic_mux_data_->push_segment(output_segment); | |
1013 | ||
1014 | output_segment->set_samplerate(get_input_samplerate(0)); | |
1015 | ||
1016 | do { | |
1017 | const uint64_t input_sample_count = get_working_sample_count(segment_id); | |
1018 | const uint64_t output_sample_count = output_segment->get_sample_count(); | |
1019 | ||
1020 | const uint64_t samples_to_process = | |
1021 | (input_sample_count > output_sample_count) ? | |
1022 | (input_sample_count - output_sample_count) : 0; | |
1023 | ||
1024 | // Process the samples if necessary... | |
1025 | if (samples_to_process > 0) { | |
1026 | const uint64_t unit_size = output_segment->unit_size(); | |
1027 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
1028 | ||
1029 | uint64_t processed_samples = 0; | |
1030 | do { | |
1031 | const uint64_t start_sample = output_sample_count + processed_samples; | |
1032 | const uint64_t sample_count = | |
1033 | min(samples_to_process - processed_samples, chunk_sample_count); | |
1034 | ||
1035 | mux_logic_samples(segment_id, start_sample, start_sample + sample_count); | |
1036 | processed_samples += sample_count; | |
1037 | ||
1038 | // ...and process the newly muxed logic data | |
1039 | decode_input_cond_.notify_one(); | |
1040 | } while (!logic_mux_interrupt_ && (processed_samples < samples_to_process)); | |
1041 | } | |
1042 | ||
1043 | if (samples_to_process == 0) { | |
1044 | // TODO Optimize this by caching the input segment count and only | |
1045 | // querying it when the cached value was reached | |
1046 | if (segment_id < get_input_segment_count() - 1) { | |
1047 | // Process next segment | |
1048 | segment_id++; | |
1049 | ||
1050 | output_segment = | |
1051 | make_shared<LogicSegment>(*logic_mux_data_, segment_id, | |
1052 | logic_mux_unit_size_, 0); | |
1053 | logic_mux_data_->push_segment(output_segment); | |
1054 | ||
1055 | output_segment->set_samplerate(get_input_samplerate(segment_id)); | |
1056 | ||
1057 | } else { | |
1058 | // All segments have been processed | |
1059 | logic_mux_data_invalid_ = false; | |
1060 | ||
1061 | // Wait for more input | |
1062 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
1063 | logic_mux_cond_.wait(logic_mux_lock); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | } while (!logic_mux_interrupt_); | |
1068 | } | |
1069 | ||
1070 | void DecodeSignal::decode_data( | |
1071 | const int64_t abs_start_samplenum, const int64_t sample_count, | |
1072 | const shared_ptr<LogicSegment> input_segment) | |
1073 | { | |
1074 | const int64_t unit_size = input_segment->unit_size(); | |
1075 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
1076 | ||
1077 | for (int64_t i = abs_start_samplenum; | |
1078 | error_message_.isEmpty() && !decode_interrupt_ && | |
1079 | (i < (abs_start_samplenum + sample_count)); | |
1080 | i += chunk_sample_count) { | |
1081 | ||
1082 | const int64_t chunk_end = min(i + chunk_sample_count, | |
1083 | abs_start_samplenum + sample_count); | |
1084 | ||
1085 | { | |
1086 | lock_guard<mutex> lock(output_mutex_); | |
1087 | // Update the sample count showing the samples including currently processed ones | |
1088 | segments_.at(current_segment_id_).samples_decoded_incl = chunk_end; | |
1089 | } | |
1090 | ||
1091 | int64_t data_size = (chunk_end - i) * unit_size; | |
1092 | uint8_t* chunk = new uint8_t[data_size]; | |
1093 | input_segment->get_samples(i, chunk_end, chunk); | |
1094 | ||
1095 | if (srd_session_send(srd_session_, i, chunk_end, chunk, | |
1096 | data_size, unit_size) != SRD_OK) | |
1097 | set_error_message(tr("Decoder reported an error")); | |
1098 | ||
1099 | delete[] chunk; | |
1100 | ||
1101 | { | |
1102 | lock_guard<mutex> lock(output_mutex_); | |
1103 | // Now that all samples are processed, the exclusive sample count catches up | |
1104 | segments_.at(current_segment_id_).samples_decoded_excl = chunk_end; | |
1105 | } | |
1106 | ||
1107 | // Notify the frontend that we processed some data and | |
1108 | // possibly have new annotations as well | |
1109 | new_annotations(); | |
1110 | ||
1111 | if (decode_paused_) { | |
1112 | unique_lock<mutex> pause_wait_lock(decode_pause_mutex_); | |
1113 | decode_pause_cond_.wait(pause_wait_lock); | |
1114 | } | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | void DecodeSignal::decode_proc() | |
1119 | { | |
1120 | current_segment_id_ = 0; | |
1121 | ||
1122 | // If there is no input data available yet, wait until it is or we're interrupted | |
1123 | if (logic_mux_data_->logic_segments().size() == 0) { | |
1124 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
1125 | decode_input_cond_.wait(input_wait_lock); | |
1126 | } | |
1127 | ||
1128 | if (decode_interrupt_) | |
1129 | return; | |
1130 | ||
1131 | shared_ptr<LogicSegment> input_segment = logic_mux_data_->logic_segments().front(); | |
1132 | assert(input_segment); | |
1133 | ||
1134 | // Create the initial segment and set its sample rate so that we can pass it to SRD | |
1135 | create_decode_segment(); | |
1136 | segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); | |
1137 | segments_.at(current_segment_id_).start_time = input_segment->start_time(); | |
1138 | ||
1139 | start_srd_session(); | |
1140 | ||
1141 | uint64_t sample_count = 0; | |
1142 | uint64_t abs_start_samplenum = 0; | |
1143 | do { | |
1144 | // Keep processing new samples until we exhaust the input data | |
1145 | do { | |
1146 | lock_guard<mutex> input_lock(input_mutex_); | |
1147 | sample_count = input_segment->get_sample_count() - abs_start_samplenum; | |
1148 | ||
1149 | if (sample_count > 0) { | |
1150 | decode_data(abs_start_samplenum, sample_count, input_segment); | |
1151 | abs_start_samplenum += sample_count; | |
1152 | } | |
1153 | } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_); | |
1154 | ||
1155 | if (error_message_.isEmpty() && !decode_interrupt_ && sample_count == 0) { | |
1156 | if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) { | |
1157 | // Process next segment | |
1158 | current_segment_id_++; | |
1159 | ||
1160 | try { | |
1161 | input_segment = logic_mux_data_->logic_segments().at(current_segment_id_); | |
1162 | } catch (out_of_range&) { | |
1163 | qDebug() << "Decode error for" << name() << ": no logic mux segment" \ | |
1164 | << current_segment_id_ << "in decode_proc(), mux segments size is" \ | |
1165 | << logic_mux_data_->logic_segments().size(); | |
1166 | return; | |
1167 | } | |
1168 | abs_start_samplenum = 0; | |
1169 | ||
1170 | // Create the next segment and set its metadata | |
1171 | create_decode_segment(); | |
1172 | segments_.at(current_segment_id_).samplerate = input_segment->samplerate(); | |
1173 | segments_.at(current_segment_id_).start_time = input_segment->start_time(); | |
1174 | ||
1175 | // Reset decoder state but keep the decoder stack intact | |
1176 | terminate_srd_session(); | |
1177 | } else { | |
1178 | // All segments have been processed | |
1179 | decode_finished(); | |
1180 | ||
1181 | // Wait for new input data or an interrupt was requested | |
1182 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
1183 | decode_input_cond_.wait(input_wait_lock); | |
1184 | } | |
1185 | } | |
1186 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
1187 | ||
1188 | // Potentially reap decoders when the application no longer is | |
1189 | // interested in their (pending) results. | |
1190 | if (decode_interrupt_) | |
1191 | terminate_srd_session(); | |
1192 | } | |
1193 | ||
1194 | void DecodeSignal::start_srd_session() | |
1195 | { | |
1196 | // If there were stack changes, the session has been destroyed by now, so if | |
1197 | // it hasn't been destroyed, we can just reset and re-use it | |
1198 | if (srd_session_) { | |
1199 | // When a decoder stack was created before, re-use it | |
1200 | // for the next stream of input data, after terminating | |
1201 | // potentially still executing operations, and resetting | |
1202 | // internal state. Skip the rather expensive (teardown | |
1203 | // and) construction of another decoder stack. | |
1204 | ||
1205 | // TODO Reduce redundancy, use a common code path for | |
1206 | // the meta/start sequence? | |
1207 | terminate_srd_session(); | |
1208 | ||
1209 | // Metadata is cleared also, so re-set it | |
1210 | uint64_t samplerate = 0; | |
1211 | if (segments_.size() > 0) | |
1212 | samplerate = segments_.at(current_segment_id_).samplerate; | |
1213 | if (samplerate) | |
1214 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
1215 | g_variant_new_uint64(samplerate)); | |
1216 | for (const shared_ptr<decode::Decoder>& dec : stack_) | |
1217 | dec->apply_all_options(); | |
1218 | srd_session_start(srd_session_); | |
1219 | ||
1220 | return; | |
1221 | } | |
1222 | ||
1223 | // Create the session | |
1224 | srd_session_new(&srd_session_); | |
1225 | assert(srd_session_); | |
1226 | ||
1227 | // Create the decoders | |
1228 | srd_decoder_inst *prev_di = nullptr; | |
1229 | for (const shared_ptr<decode::Decoder>& dec : stack_) { | |
1230 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
1231 | ||
1232 | if (!di) { | |
1233 | set_error_message(tr("Failed to create decoder instance")); | |
1234 | srd_session_destroy(srd_session_); | |
1235 | srd_session_ = nullptr; | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | if (prev_di) | |
1240 | srd_inst_stack(srd_session_, prev_di, di); | |
1241 | ||
1242 | prev_di = di; | |
1243 | } | |
1244 | ||
1245 | // Start the session | |
1246 | if (segments_.size() > 0) | |
1247 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
1248 | g_variant_new_uint64(segments_.at(current_segment_id_).samplerate)); | |
1249 | ||
1250 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
1251 | DecodeSignal::annotation_callback, this); | |
1252 | ||
1253 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_BINARY, | |
1254 | DecodeSignal::binary_callback, this); | |
1255 | ||
1256 | srd_session_start(srd_session_); | |
1257 | ||
1258 | // We just recreated the srd session, so all stack changes are applied now | |
1259 | stack_config_changed_ = false; | |
1260 | } | |
1261 | ||
1262 | void DecodeSignal::terminate_srd_session() | |
1263 | { | |
1264 | // Call the "terminate and reset" routine for the decoder stack | |
1265 | // (if available). This does not harm those stacks which already | |
1266 | // have completed their operation, and reduces response time for | |
1267 | // those stacks which still are processing data while the | |
1268 | // application no longer wants them to. | |
1269 | if (srd_session_) { | |
1270 | srd_session_terminate_reset(srd_session_); | |
1271 | ||
1272 | // Metadata is cleared also, so re-set it | |
1273 | uint64_t samplerate = 0; | |
1274 | if (segments_.size() > 0) | |
1275 | samplerate = segments_.at(current_segment_id_).samplerate; | |
1276 | if (samplerate) | |
1277 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
1278 | g_variant_new_uint64(samplerate)); | |
1279 | for (const shared_ptr<decode::Decoder>& dec : stack_) | |
1280 | dec->apply_all_options(); | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | void DecodeSignal::stop_srd_session() | |
1285 | { | |
1286 | if (srd_session_) { | |
1287 | // Destroy the session | |
1288 | srd_session_destroy(srd_session_); | |
1289 | srd_session_ = nullptr; | |
1290 | ||
1291 | // Mark the decoder instances as non-existant since they were deleted | |
1292 | for (const shared_ptr<decode::Decoder>& dec : stack_) | |
1293 | dec->invalidate_decoder_inst(); | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | void DecodeSignal::connect_input_notifiers() | |
1298 | { | |
1299 | // Disconnect the notification slot from the previous set of signals | |
1300 | disconnect(this, SLOT(on_data_cleared())); | |
1301 | disconnect(this, SLOT(on_data_received())); | |
1302 | ||
1303 | // Connect the currently used signals to our slot | |
1304 | for (decode::DecodeChannel& ch : channels_) { | |
1305 | if (!ch.assigned_signal) | |
1306 | continue; | |
1307 | ||
1308 | const data::SignalBase *signal = ch.assigned_signal; | |
1309 | connect(signal, SIGNAL(samples_cleared()), | |
1310 | this, SLOT(on_data_cleared())); | |
1311 | connect(signal, SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)), | |
1312 | this, SLOT(on_data_received())); | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | void DecodeSignal::create_decode_segment() | |
1317 | { | |
1318 | // Create annotation segment | |
1319 | segments_.emplace_back(DecodeSegment()); | |
1320 | ||
1321 | // Add annotation classes | |
1322 | for (const shared_ptr<decode::Decoder>& dec : stack_) { | |
1323 | assert(dec); | |
1324 | const srd_decoder *const decc = dec->decoder(); | |
1325 | assert(dec->decoder()); | |
1326 | ||
1327 | int row_index = 0; | |
1328 | // Add a row for the decoder if it doesn't have a row list | |
1329 | if (!decc->annotation_rows) | |
1330 | (segments_.back().annotation_rows)[Row(row_index++, decc)] = | |
1331 | decode::RowData(); | |
1332 | ||
1333 | // Add the decoder rows | |
1334 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
1335 | const srd_decoder_annotation_row *const ann_row = | |
1336 | (srd_decoder_annotation_row *)l->data; | |
1337 | assert(ann_row); | |
1338 | ||
1339 | const Row row(row_index++, decc, ann_row); | |
1340 | ||
1341 | // Add a new empty row data object | |
1342 | (segments_.back().annotation_rows)[row] = | |
1343 | decode::RowData(); | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | // Prepare our binary output classes | |
1348 | for (const shared_ptr<decode::Decoder>& dec : stack_) { | |
1349 | uint32_t n = dec->get_binary_class_count(); | |
1350 | ||
1351 | for (uint32_t i = 0; i < n; i++) | |
1352 | segments_.back().binary_classes.push_back( | |
1353 | {dec.get(), dec->get_binary_class(i), deque<DecodeBinaryDataChunk>()}); | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) | |
1358 | { | |
1359 | assert(pdata); | |
1360 | assert(decode_signal); | |
1361 | ||
1362 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
1363 | assert(ds); | |
1364 | ||
1365 | if (ds->decode_interrupt_) | |
1366 | return; | |
1367 | ||
1368 | lock_guard<mutex> lock(ds->output_mutex_); | |
1369 | ||
1370 | // Get the decoder and the annotation data | |
1371 | assert(pdata->pdo); | |
1372 | assert(pdata->pdo->di); | |
1373 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
1374 | assert(decc); | |
1375 | ||
1376 | const srd_proto_data_annotation *const pda = (const srd_proto_data_annotation*)pdata->data; | |
1377 | assert(pda); | |
1378 | ||
1379 | // Find the row | |
1380 | auto row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.end(); | |
1381 | ||
1382 | // Try finding a better row match than the default by looking up the sub-row of this class | |
1383 | const auto format = pda->ann_class; | |
1384 | const auto r = ds->class_rows_.find(make_pair(decc, format)); | |
1385 | if (r != ds->class_rows_.end()) | |
1386 | row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find((*r).second); | |
1387 | else { | |
1388 | // Failing that, use the decoder as a key | |
1389 | row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find(Row(0, decc)); | |
1390 | } | |
1391 | ||
1392 | if (row_iter == ds->segments_.at(ds->current_segment_id_).annotation_rows.end()) { | |
1393 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
1394 | ", format = " << format; | |
1395 | assert(false); | |
1396 | return; | |
1397 | } | |
1398 | ||
1399 | // Add the annotation | |
1400 | (*row_iter).second.emplace_annotation(pdata, &((*row_iter).first)); | |
1401 | } | |
1402 | ||
1403 | void DecodeSignal::binary_callback(srd_proto_data *pdata, void *decode_signal) | |
1404 | { | |
1405 | assert(pdata); | |
1406 | assert(decode_signal); | |
1407 | ||
1408 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
1409 | assert(ds); | |
1410 | ||
1411 | if (ds->decode_interrupt_) | |
1412 | return; | |
1413 | ||
1414 | // Get the decoder and the binary data | |
1415 | assert(pdata->pdo); | |
1416 | assert(pdata->pdo->di); | |
1417 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
1418 | assert(decc); | |
1419 | ||
1420 | const srd_proto_data_binary *const pdb = (const srd_proto_data_binary*)pdata->data; | |
1421 | assert(pdb); | |
1422 | ||
1423 | // Find the matching DecodeBinaryClass | |
1424 | DecodeSegment* segment = &(ds->segments_.at(ds->current_segment_id_)); | |
1425 | ||
1426 | DecodeBinaryClass* bin_class = nullptr; | |
1427 | for (DecodeBinaryClass& bc : segment->binary_classes) | |
1428 | if ((bc.decoder->decoder() == decc) && (bc.info->bin_class_id == (uint32_t)pdb->bin_class)) | |
1429 | bin_class = &bc; | |
1430 | ||
1431 | if (!bin_class) { | |
1432 | qWarning() << "Could not find valid DecodeBinaryClass in segment" << | |
1433 | ds->current_segment_id_ << "for binary class ID" << pdb->bin_class << | |
1434 | ", segment only knows" << segment->binary_classes.size() << "classes"; | |
1435 | return; | |
1436 | } | |
1437 | ||
1438 | // Add the data chunk | |
1439 | bin_class->chunks.emplace_back(); | |
1440 | DecodeBinaryDataChunk* chunk = &(bin_class->chunks.back()); | |
1441 | ||
1442 | chunk->sample = pdata->start_sample; | |
1443 | chunk->data.resize(pdb->size); | |
1444 | memcpy(chunk->data.data(), pdb->data, pdb->size); | |
1445 | ||
1446 | // Find decoder class instance | |
1447 | Decoder* dec = nullptr; | |
1448 | for (const shared_ptr<decode::Decoder>& d : ds->decoder_stack()) | |
1449 | if (d->decoder() == decc) { | |
1450 | dec = d.get(); | |
1451 | break; | |
1452 | } | |
1453 | ||
1454 | ds->new_binary_data(ds->current_segment_id_, (void*)dec, pdb->bin_class); | |
1455 | } | |
1456 | ||
1457 | void DecodeSignal::on_capture_state_changed(int state) | |
1458 | { | |
1459 | // If a new acquisition was started, we need to start decoding from scratch | |
1460 | if (state == Session::Running) { | |
1461 | logic_mux_data_invalid_ = true; | |
1462 | begin_decode(); | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | void DecodeSignal::on_data_cleared() | |
1467 | { | |
1468 | reset_decode(); | |
1469 | } | |
1470 | ||
1471 | void DecodeSignal::on_data_received() | |
1472 | { | |
1473 | // If we detected a lack of input data when trying to start decoding, | |
1474 | // we have set an error message. Only try again if we now have data | |
1475 | // to work with | |
1476 | if ((!error_message_.isEmpty()) && (get_input_segment_count() == 0)) | |
1477 | return; | |
1478 | ||
1479 | if (!logic_mux_thread_.joinable()) | |
1480 | begin_decode(); | |
1481 | else | |
1482 | logic_mux_cond_.notify_one(); | |
1483 | } | |
1484 | ||
1485 | } // namespace data | |
1486 | } // namespace pv |