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ad908057 SA |
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 | ||
0c5fe73e SA |
20 | #include <limits> |
21 | ||
47747218 SA |
22 | #include <QDebug> |
23 | ||
ad908057 SA |
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> | |
ecd07c20 | 31 | #include <pv/data/decode/row.hpp> |
ad908057 SA |
32 | #include <pv/session.hpp> |
33 | ||
47747218 SA |
34 | using std::lock_guard; |
35 | using std::make_pair; | |
ad908057 | 36 | using std::make_shared; |
0c5fe73e | 37 | using std::min; |
ad908057 | 38 | using std::shared_ptr; |
47747218 SA |
39 | using std::unique_lock; |
40 | using pv::data::decode::Annotation; | |
ad908057 | 41 | using pv::data::decode::Decoder; |
ecd07c20 | 42 | using pv::data::decode::Row; |
ad908057 SA |
43 | |
44 | namespace pv { | |
45 | namespace data { | |
46 | ||
47747218 SA |
47 | const double DecodeSignal::DecodeMargin = 1.0; |
48 | const double DecodeSignal::DecodeThreshold = 0.2; | |
3fbddf7f | 49 | const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024; |
ad908057 | 50 | |
47747218 | 51 | mutex DecodeSignal::global_srd_mutex_; |
9f97b357 | 52 | |
ad908057 | 53 | |
47747218 SA |
54 | DecodeSignal::DecodeSignal(pv::Session &session) : |
55 | SignalBase(nullptr, SignalBase::DecodeChannel), | |
56 | session_(session), | |
e91883bb | 57 | srd_session_(nullptr), |
47747218 SA |
58 | logic_mux_data_invalid_(false), |
59 | start_time_(0), | |
60 | samplerate_(0), | |
47747218 SA |
61 | samples_decoded_(0), |
62 | frame_complete_(false) | |
ad908057 | 63 | { |
47747218 SA |
64 | connect(&session_, SIGNAL(capture_state_changed(int)), |
65 | this, SLOT(on_capture_state_changed(int))); | |
47747218 SA |
66 | |
67 | set_name(tr("Empty decoder signal")); | |
ad908057 SA |
68 | } |
69 | ||
47747218 | 70 | DecodeSignal::~DecodeSignal() |
ad908057 | 71 | { |
1b56c646 | 72 | reset_decode(); |
ad908057 SA |
73 | } |
74 | ||
47747218 | 75 | const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const |
ecd07c20 | 76 | { |
47747218 | 77 | return stack_; |
ecd07c20 SA |
78 | } |
79 | ||
c8e60bdf | 80 | void DecodeSignal::stack_decoder(const srd_decoder *decoder) |
ad908057 SA |
81 | { |
82 | assert(decoder); | |
47747218 SA |
83 | stack_.push_back(make_shared<decode::Decoder>(decoder)); |
84 | ||
85 | // Set name if this decoder is the first in the list | |
86 | if (stack_.size() == 1) | |
87 | set_name(QString::fromUtf8(decoder->name)); | |
132a5c6d | 88 | |
27a3f09b | 89 | // Include the newly created decode channels in the channel lists |
9f97b357 | 90 | update_channel_list(); |
132a5c6d SA |
91 | |
92 | auto_assign_signals(); | |
27a3f09b | 93 | commit_decoder_channels(); |
47747218 | 94 | begin_decode(); |
ad908057 SA |
95 | } |
96 | ||
97 | void DecodeSignal::remove_decoder(int index) | |
98 | { | |
47747218 SA |
99 | assert(index >= 0); |
100 | assert(index < (int)stack_.size()); | |
101 | ||
102 | // Find the decoder in the stack | |
103 | auto iter = stack_.begin(); | |
104 | for (int i = 0; i < index; i++, iter++) | |
105 | assert(iter != stack_.end()); | |
106 | ||
107 | // Delete the element | |
108 | stack_.erase(iter); | |
109 | ||
110 | // Update channels and decoded data | |
9f97b357 | 111 | update_channel_list(); |
47747218 | 112 | begin_decode(); |
ad908057 SA |
113 | } |
114 | ||
115 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
116 | { | |
47747218 | 117 | auto iter = stack_.cbegin(); |
ad908057 | 118 | for (int i = 0; i < index; i++, iter++) |
47747218 | 119 | assert(iter != stack_.end()); |
ad908057 SA |
120 | |
121 | shared_ptr<Decoder> dec = *iter; | |
122 | ||
123 | // Toggle decoder visibility | |
124 | bool state = false; | |
125 | if (dec) { | |
126 | state = !dec->shown(); | |
127 | dec->show(state); | |
128 | } | |
129 | ||
130 | return state; | |
131 | } | |
132 | ||
47747218 SA |
133 | void DecodeSignal::reset_decode() |
134 | { | |
1b56c646 SA |
135 | if (decode_thread_.joinable()) { |
136 | decode_interrupt_ = true; | |
137 | decode_input_cond_.notify_one(); | |
138 | decode_thread_.join(); | |
139 | } | |
140 | ||
141 | if (logic_mux_thread_.joinable()) { | |
142 | logic_mux_interrupt_ = true; | |
143 | logic_mux_cond_.notify_one(); | |
144 | logic_mux_thread_.join(); | |
145 | } | |
146 | ||
e91883bb SA |
147 | stop_srd_session(); |
148 | ||
47747218 SA |
149 | frame_complete_ = false; |
150 | samples_decoded_ = 0; | |
151 | error_message_ = QString(); | |
1b56c646 | 152 | |
47747218 SA |
153 | rows_.clear(); |
154 | class_rows_.clear(); | |
1b56c646 SA |
155 | |
156 | logic_mux_data_.reset(); | |
157 | logic_mux_data_invalid_ = true; | |
47747218 SA |
158 | } |
159 | ||
946b52e1 SA |
160 | void DecodeSignal::begin_decode() |
161 | { | |
47747218 SA |
162 | if (decode_thread_.joinable()) { |
163 | decode_interrupt_ = true; | |
164 | decode_input_cond_.notify_one(); | |
165 | decode_thread_.join(); | |
166 | } | |
167 | ||
168 | if (logic_mux_thread_.joinable()) { | |
169 | logic_mux_interrupt_ = true; | |
170 | logic_mux_cond_.notify_one(); | |
171 | logic_mux_thread_.join(); | |
172 | } | |
173 | ||
174 | reset_decode(); | |
175 | ||
27a3f09b SA |
176 | if (stack_.size() == 0) { |
177 | error_message_ = tr("No decoders"); | |
178 | return; | |
179 | } | |
180 | ||
181 | assert(channels_.size() > 0); | |
182 | ||
183 | if (get_assigned_signal_count() == 0) { | |
184 | error_message_ = tr("There are no channels assigned to this decoder"); | |
185 | return; | |
186 | } | |
187 | ||
04627946 SA |
188 | // Make sure that all assigned channels still provide logic data |
189 | // (can happen when a converted signal was assigned but the | |
190 | // conversion removed in the meanwhile) | |
191 | for (data::DecodeChannel &ch : channels_) | |
192 | if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr)) | |
193 | ch.assigned_signal = nullptr; | |
194 | ||
47747218 SA |
195 | // Check that all decoders have the required channels |
196 | for (const shared_ptr<decode::Decoder> &dec : stack_) | |
197 | if (!dec->have_required_channels()) { | |
198 | error_message_ = tr("One or more required channels " | |
199 | "have not been specified"); | |
200 | return; | |
201 | } | |
202 | ||
203 | // Add annotation classes | |
204 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
205 | assert(dec); | |
206 | const srd_decoder *const decc = dec->decoder(); | |
207 | assert(dec->decoder()); | |
208 | ||
209 | // Add a row for the decoder if it doesn't have a row list | |
210 | if (!decc->annotation_rows) | |
211 | rows_[Row(decc)] = decode::RowData(); | |
212 | ||
213 | // Add the decoder rows | |
214 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
215 | const srd_decoder_annotation_row *const ann_row = | |
216 | (srd_decoder_annotation_row *)l->data; | |
217 | assert(ann_row); | |
218 | ||
219 | const Row row(decc, ann_row); | |
220 | ||
221 | // Add a new empty row data object | |
222 | rows_[row] = decode::RowData(); | |
223 | ||
224 | // Map out all the classes | |
225 | for (const GSList *ll = ann_row->ann_classes; | |
226 | ll; ll = ll->next) | |
227 | class_rows_[make_pair(decc, | |
228 | GPOINTER_TO_INT(ll->data))] = row; | |
229 | } | |
230 | } | |
231 | ||
27a3f09b SA |
232 | // Free the logic data and its segment(s) if it needs to be updated |
233 | if (logic_mux_data_invalid_) | |
234 | logic_mux_data_.reset(); | |
235 | ||
236 | if (!logic_mux_data_) { | |
237 | const int64_t ch_count = get_assigned_signal_count(); | |
238 | const int64_t unit_size = (ch_count + 7) / 8; | |
239 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
240 | segment_ = make_shared<LogicSegment>(*logic_mux_data_, unit_size, samplerate_); | |
241 | logic_mux_data_->push_segment(segment_); | |
242 | } | |
47747218 | 243 | |
27a3f09b SA |
244 | // Make sure the logic output data is complete and up-to-date |
245 | logic_mux_interrupt_ = false; | |
246 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
247 | ||
248 | // Decode the muxed logic data | |
47747218 SA |
249 | decode_interrupt_ = false; |
250 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
a8a9222d SA |
251 | |
252 | // Receive notifications when new sample data is available | |
253 | connect_input_notifiers(); | |
946b52e1 SA |
254 | } |
255 | ||
ecd07c20 SA |
256 | QString DecodeSignal::error_message() const |
257 | { | |
47747218 SA |
258 | lock_guard<mutex> lock(output_mutex_); |
259 | return error_message_; | |
ecd07c20 SA |
260 | } |
261 | ||
47747218 | 262 | const vector<data::DecodeChannel> DecodeSignal::get_channels() const |
9f97b357 SA |
263 | { |
264 | return channels_; | |
265 | } | |
266 | ||
132a5c6d SA |
267 | void DecodeSignal::auto_assign_signals() |
268 | { | |
47747218 SA |
269 | bool new_assignment = false; |
270 | ||
132a5c6d SA |
271 | // Try to auto-select channels that don't have signals assigned yet |
272 | for (data::DecodeChannel &ch : channels_) { | |
273 | if (ch.assigned_signal) | |
274 | continue; | |
275 | ||
692f6093 SA |
276 | for (shared_ptr<data::SignalBase> s : session_.signalbases()) { |
277 | const QString ch_name = ch.name.toLower(); | |
278 | const QString s_name = s->name().toLower(); | |
279 | ||
280 | if (s->logic_data() && | |
281 | ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) { | |
132a5c6d | 282 | ch.assigned_signal = s.get(); |
47747218 SA |
283 | new_assignment = true; |
284 | } | |
692f6093 | 285 | } |
47747218 SA |
286 | } |
287 | ||
288 | if (new_assignment) { | |
289 | logic_mux_data_invalid_ = true; | |
27a3f09b | 290 | commit_decoder_channels(); |
47747218 | 291 | channels_updated(); |
132a5c6d SA |
292 | } |
293 | } | |
294 | ||
9f97b357 SA |
295 | void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal) |
296 | { | |
297 | for (data::DecodeChannel &ch : channels_) | |
47747218 | 298 | if (ch.id == channel_id) { |
9f97b357 | 299 | ch.assigned_signal = signal; |
47747218 SA |
300 | logic_mux_data_invalid_ = true; |
301 | } | |
9f97b357 | 302 | |
27a3f09b | 303 | commit_decoder_channels(); |
9f97b357 | 304 | channels_updated(); |
47747218 | 305 | begin_decode(); |
9f97b357 SA |
306 | } |
307 | ||
27a3f09b SA |
308 | int DecodeSignal::get_assigned_signal_count() const |
309 | { | |
310 | // Count all channels that have a signal assigned to them | |
311 | return count_if(channels_.begin(), channels_.end(), | |
312 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
313 | } | |
314 | ||
9f97b357 SA |
315 | void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state) |
316 | { | |
317 | for (data::DecodeChannel &ch : channels_) | |
318 | if (ch.id == channel_id) | |
319 | ch.initial_pin_state = init_state; | |
320 | ||
321 | channels_updated(); | |
322 | ||
47747218 | 323 | begin_decode(); |
9f97b357 SA |
324 | } |
325 | ||
ff83d980 SA |
326 | double DecodeSignal::samplerate() const |
327 | { | |
47747218 | 328 | return samplerate_; |
ff83d980 SA |
329 | } |
330 | ||
331 | const pv::util::Timestamp& DecodeSignal::start_time() const | |
332 | { | |
47747218 | 333 | return start_time_; |
ff83d980 SA |
334 | } |
335 | ||
0c5fe73e SA |
336 | int64_t DecodeSignal::get_working_sample_count() const |
337 | { | |
338 | // The working sample count is the highest sample number for | |
339 | // which all used signals have data available, so go through | |
340 | // all channels and use the lowest overall sample count of the | |
341 | // current segment | |
342 | ||
343 | // TODO Currently, we assume only a single segment exists | |
344 | ||
345 | int64_t count = std::numeric_limits<int64_t>::max(); | |
346 | bool no_signals_assigned = true; | |
347 | ||
348 | for (const data::DecodeChannel &ch : channels_) | |
349 | if (ch.assigned_signal) { | |
350 | no_signals_assigned = false; | |
351 | ||
352 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
353 | if (!logic_data || logic_data->logic_segments().empty()) | |
354 | return 0; | |
355 | ||
356 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
357 | count = min(count, (int64_t)segment->get_sample_count()); | |
358 | } | |
359 | ||
360 | return (no_signals_assigned ? 0 : count); | |
361 | } | |
362 | ||
363 | int64_t DecodeSignal::get_decoded_sample_count() const | |
ff83d980 | 364 | { |
47747218 SA |
365 | lock_guard<mutex> decode_lock(output_mutex_); |
366 | return samples_decoded_; | |
ff83d980 SA |
367 | } |
368 | ||
ecd07c20 SA |
369 | vector<Row> DecodeSignal::visible_rows() const |
370 | { | |
47747218 SA |
371 | lock_guard<mutex> lock(output_mutex_); |
372 | ||
373 | vector<Row> rows; | |
374 | ||
375 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
376 | assert(dec); | |
377 | if (!dec->shown()) | |
378 | continue; | |
379 | ||
380 | const srd_decoder *const decc = dec->decoder(); | |
381 | assert(dec->decoder()); | |
382 | ||
383 | // Add a row for the decoder if it doesn't have a row list | |
384 | if (!decc->annotation_rows) | |
385 | rows.emplace_back(decc); | |
386 | ||
387 | // Add the decoder rows | |
388 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
389 | const srd_decoder_annotation_row *const ann_row = | |
390 | (srd_decoder_annotation_row *)l->data; | |
391 | assert(ann_row); | |
392 | rows.emplace_back(decc, ann_row); | |
393 | } | |
394 | } | |
395 | ||
396 | return rows; | |
ecd07c20 SA |
397 | } |
398 | ||
399 | void DecodeSignal::get_annotation_subset( | |
400 | vector<pv::data::decode::Annotation> &dest, | |
401 | const decode::Row &row, uint64_t start_sample, | |
402 | uint64_t end_sample) const | |
403 | { | |
47747218 SA |
404 | lock_guard<mutex> lock(output_mutex_); |
405 | ||
406 | const auto iter = rows_.find(row); | |
407 | if (iter != rows_.end()) | |
408 | (*iter).second.get_annotation_subset(dest, | |
409 | start_sample, end_sample); | |
410 | } | |
411 | ||
412 | void DecodeSignal::save_settings(QSettings &settings) const | |
413 | { | |
414 | SignalBase::save_settings(settings); | |
415 | ||
c8e60bdf SA |
416 | settings.setValue("decoders", (int)(stack_.size())); |
417 | ||
418 | int decoder_idx = 0; | |
419 | for (shared_ptr<decode::Decoder> decoder : stack_) { | |
420 | settings.beginGroup("decoder" + QString::number(decoder_idx++)); | |
421 | ||
422 | settings.setValue("id", decoder->decoder()->id); | |
423 | ||
424 | settings.endGroup(); | |
425 | } | |
426 | ||
427 | // TODO Save channel mapping and decoder options | |
47747218 SA |
428 | } |
429 | ||
430 | void DecodeSignal::restore_settings(QSettings &settings) | |
431 | { | |
432 | SignalBase::restore_settings(settings); | |
433 | ||
c8e60bdf SA |
434 | GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list()); |
435 | ||
436 | int decoders = settings.value("decoders").toInt(); | |
437 | ||
438 | for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) { | |
439 | settings.beginGroup("decoder" + QString::number(decoder_idx)); | |
440 | ||
441 | QString id = settings.value("id").toString(); | |
442 | ||
443 | for (GSList *entry = dec_list; entry; entry = entry->next) { | |
444 | const srd_decoder *dec = (srd_decoder*)entry->data; | |
445 | if (!dec) | |
446 | continue; | |
447 | ||
448 | if (QString::fromUtf8(dec->id) == id) { | |
449 | stack_.push_back(make_shared<decode::Decoder>(dec)); | |
450 | ||
451 | // Include the newly created decode channels in the channel lists | |
452 | update_channel_list(); | |
453 | break; | |
454 | } | |
455 | } | |
456 | ||
457 | settings.endGroup(); | |
458 | } | |
459 | ||
460 | // TODO Restore channel mapping and decoder options | |
47747218 SA |
461 | } |
462 | ||
9f97b357 SA |
463 | void DecodeSignal::update_channel_list() |
464 | { | |
47747218 | 465 | vector<data::DecodeChannel> prev_channels = channels_; |
9f97b357 SA |
466 | channels_.clear(); |
467 | ||
468 | uint16_t id = 0; | |
469 | ||
470 | // Copy existing entries, create new as needed | |
47747218 | 471 | for (shared_ptr<Decoder> decoder : stack_) { |
9f97b357 SA |
472 | const srd_decoder* srd_d = decoder->decoder(); |
473 | const GSList *l; | |
474 | ||
475 | // Mandatory channels | |
476 | for (l = srd_d->channels; l; l = l->next) { | |
477 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
478 | bool ch_added = false; | |
479 | ||
480 | // Copy but update ID if this channel was in the list before | |
47747218 | 481 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
482 | if (ch.pdch_ == pdch) { |
483 | ch.id = id++; | |
484 | channels_.push_back(ch); | |
485 | ch_added = true; | |
486 | break; | |
487 | } | |
488 | ||
489 | if (!ch_added) { | |
490 | // Create new entry without a mapped signal | |
491 | data::DecodeChannel ch = {id++, false, nullptr, | |
492 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
493 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
494 | channels_.push_back(ch); | |
495 | } | |
496 | } | |
497 | ||
498 | // Optional channels | |
499 | for (l = srd_d->opt_channels; l; l = l->next) { | |
500 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
501 | bool ch_added = false; | |
502 | ||
503 | // Copy but update ID if this channel was in the list before | |
47747218 | 504 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
505 | if (ch.pdch_ == pdch) { |
506 | ch.id = id++; | |
507 | channels_.push_back(ch); | |
508 | ch_added = true; | |
509 | break; | |
510 | } | |
511 | ||
512 | if (!ch_added) { | |
513 | // Create new entry without a mapped signal | |
514 | data::DecodeChannel ch = {id++, true, nullptr, | |
515 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
516 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
517 | channels_.push_back(ch); | |
518 | } | |
519 | } | |
520 | } | |
521 | ||
47747218 SA |
522 | // Invalidate the logic output data if the channel assignment changed |
523 | if (prev_channels.size() != channels_.size()) { | |
524 | // The number of channels changed, there's definitely a difference | |
525 | logic_mux_data_invalid_ = true; | |
526 | } else { | |
527 | // Same number but assignment may still differ, so compare all channels | |
528 | for (size_t i = 0; i < channels_.size(); i++) { | |
529 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
530 | const data::DecodeChannel &ch = channels_[i]; | |
531 | ||
532 | if ((p_ch.pdch_ != ch.pdch_) || | |
533 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
534 | logic_mux_data_invalid_ = true; | |
535 | break; | |
536 | } | |
537 | } | |
538 | ||
539 | } | |
540 | ||
9f97b357 SA |
541 | channels_updated(); |
542 | } | |
543 | ||
27a3f09b | 544 | void DecodeSignal::commit_decoder_channels() |
ad908057 | 545 | { |
27a3f09b SA |
546 | // Submit channel list to every decoder, containing only the relevant channels |
547 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
548 | vector<data::DecodeChannel*> channel_list; | |
549 | ||
550 | for (data::DecodeChannel &ch : channels_) | |
551 | if (ch.decoder_ == dec) | |
552 | channel_list.push_back(&ch); | |
47747218 | 553 | |
27a3f09b SA |
554 | dec->set_channels(channel_list); |
555 | } | |
47747218 SA |
556 | } |
557 | ||
27a3f09b | 558 | void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end) |
47747218 | 559 | { |
27a3f09b SA |
560 | // Enforce end to be greater than start |
561 | if (end <= start) | |
562 | return; | |
563 | ||
564 | // Fetch all segments and their data | |
565 | // TODO Currently, we assume only a single segment exists | |
566 | vector<shared_ptr<LogicSegment> > segments; | |
567 | vector<const uint8_t*> signal_data; | |
568 | vector<uint8_t> signal_in_bytepos; | |
569 | vector<uint8_t> signal_in_bitpos; | |
570 | ||
571 | for (data::DecodeChannel &ch : channels_) | |
572 | if (ch.assigned_signal) { | |
573 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
574 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
575 | segments.push_back(segment); | |
576 | signal_data.push_back(segment->get_samples(start, end)); | |
577 | ||
578 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
579 | signal_in_bytepos.push_back(bitpos / 8); | |
580 | signal_in_bitpos.push_back(bitpos % 8); | |
581 | } | |
582 | ||
583 | // Perform the muxing of signal data into the output data | |
584 | uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()]; | |
585 | unsigned int signal_count = signal_data.size(); | |
586 | ||
587 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
588 | int bitpos = 0; | |
589 | uint8_t bytepos = 0; | |
590 | ||
591 | const int out_sample_pos = sample_cnt * segment_->unit_size(); | |
592 | for (unsigned int i = 0; i < segment_->unit_size(); i++) | |
593 | output[out_sample_pos + i] = 0; | |
47747218 | 594 | |
27a3f09b SA |
595 | for (unsigned int i = 0; i < signal_count; i++) { |
596 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
597 | const uint8_t in_sample = 1 & | |
598 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
47747218 | 599 | |
27a3f09b SA |
600 | const uint8_t out_sample = output[out_sample_pos + bytepos]; |
601 | ||
602 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
603 | ||
604 | bitpos++; | |
605 | if (bitpos > 7) { | |
606 | bitpos = 0; | |
607 | bytepos++; | |
608 | } | |
609 | } | |
47747218 SA |
610 | } |
611 | ||
27a3f09b SA |
612 | segment_->append_payload(output, (end - start) * segment_->unit_size()); |
613 | delete[] output; | |
614 | ||
615 | for (const uint8_t* data : signal_data) | |
616 | delete[] data; | |
617 | } | |
618 | ||
619 | void DecodeSignal::logic_mux_proc() | |
620 | { | |
621 | do { | |
27a3f09b SA |
622 | const uint64_t input_sample_count = get_working_sample_count(); |
623 | const uint64_t output_sample_count = segment_->get_sample_count(); | |
624 | ||
625 | const uint64_t samples_to_process = | |
626 | (input_sample_count > output_sample_count) ? | |
627 | (input_sample_count - output_sample_count) : 0; | |
628 | ||
629 | // Process the samples if necessary... | |
630 | if (samples_to_process > 0) { | |
631 | const uint64_t unit_size = segment_->unit_size(); | |
632 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
633 | ||
634 | uint64_t processed_samples = 0; | |
635 | do { | |
636 | const uint64_t start_sample = output_sample_count + processed_samples; | |
637 | const uint64_t sample_count = | |
638 | min(samples_to_process - processed_samples, chunk_sample_count); | |
639 | ||
640 | mux_logic_samples(start_sample, start_sample + sample_count); | |
641 | processed_samples += sample_count; | |
642 | ||
643 | // ...and process the newly muxed logic data | |
644 | decode_input_cond_.notify_one(); | |
645 | } while (processed_samples < samples_to_process); | |
646 | } | |
647 | ||
1ec191ed | 648 | if (samples_to_process == 0) { |
27a3f09b SA |
649 | // Wait for more input |
650 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
651 | logic_mux_cond_.wait(logic_mux_lock); | |
652 | } | |
1ec191ed | 653 | } while (!logic_mux_interrupt_); |
27a3f09b SA |
654 | |
655 | // No more input data and session is stopped, let the decode thread | |
656 | // process any pending data, terminate and release the global SRD mutex | |
657 | // in order to let other decoders run | |
658 | decode_input_cond_.notify_one(); | |
47747218 SA |
659 | } |
660 | ||
a3ebd556 SA |
661 | void DecodeSignal::query_input_metadata() |
662 | { | |
663 | // Update the samplerate and start time because we cannot start | |
664 | // the libsrd session without the current samplerate | |
665 | ||
666 | // TODO Currently we assume all channels have the same sample rate | |
667 | // and start time | |
668 | bool samplerate_valid = false; | |
669 | ||
670 | auto any_channel = find_if(channels_.begin(), channels_.end(), | |
671 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
672 | ||
673 | shared_ptr<Logic> logic_data = | |
674 | any_channel->assigned_signal->logic_data(); | |
675 | ||
676 | do { | |
677 | if (!logic_data->logic_segments().empty()) { | |
678 | shared_ptr<LogicSegment> first_segment = | |
679 | any_channel->assigned_signal->logic_data()->logic_segments().front(); | |
680 | start_time_ = first_segment->start_time(); | |
681 | samplerate_ = first_segment->samplerate(); | |
682 | if (samplerate_ > 0) | |
683 | samplerate_valid = true; | |
684 | } | |
685 | ||
1ec191ed SA |
686 | if (!samplerate_valid) { |
687 | // Wait until input data is available or an interrupt was requested | |
688 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
689 | decode_input_cond_.wait(input_wait_lock); | |
690 | } | |
a3ebd556 SA |
691 | } while (!samplerate_valid && !decode_interrupt_); |
692 | } | |
693 | ||
47747218 | 694 | void DecodeSignal::decode_data( |
e91883bb | 695 | const int64_t abs_start_samplenum, const int64_t sample_count) |
47747218 | 696 | { |
27a3f09b SA |
697 | const int64_t unit_size = segment_->unit_size(); |
698 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
47747218 SA |
699 | |
700 | for (int64_t i = abs_start_samplenum; | |
701 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
702 | i += chunk_sample_count) { | |
703 | ||
704 | const int64_t chunk_end = min(i + chunk_sample_count, | |
705 | abs_start_samplenum + sample_count); | |
706 | ||
707 | const uint8_t* chunk = segment_->get_samples(i, chunk_end); | |
708 | ||
e91883bb | 709 | if (srd_session_send(srd_session_, i, chunk_end, chunk, |
47747218 SA |
710 | (chunk_end - i) * unit_size, unit_size) != SRD_OK) { |
711 | error_message_ = tr("Decoder reported an error"); | |
712 | delete[] chunk; | |
713 | break; | |
714 | } | |
a3ebd556 | 715 | |
47747218 SA |
716 | delete[] chunk; |
717 | ||
718 | { | |
719 | lock_guard<mutex> lock(output_mutex_); | |
720 | samples_decoded_ = chunk_end; | |
721 | } | |
1b56c646 SA |
722 | |
723 | // Notify the frontend that we processed some data and | |
724 | // possibly have new annotations as well | |
725 | new_annotations(); | |
47747218 SA |
726 | } |
727 | } | |
728 | ||
729 | void DecodeSignal::decode_proc() | |
730 | { | |
a3ebd556 SA |
731 | query_input_metadata(); |
732 | ||
733 | if (decode_interrupt_) | |
734 | return; | |
735 | ||
e91883bb | 736 | start_srd_session(); |
47747218 | 737 | |
27a3f09b SA |
738 | uint64_t sample_count; |
739 | uint64_t abs_start_samplenum = 0; | |
47747218 | 740 | do { |
27a3f09b SA |
741 | // Keep processing new samples until we exhaust the input data |
742 | do { | |
e91883bb SA |
743 | // Prevent any other decode threads from accessing libsigrokdecode |
744 | lock_guard<mutex> srd_lock(global_srd_mutex_); | |
745 | ||
27a3f09b SA |
746 | { |
747 | lock_guard<mutex> input_lock(input_mutex_); | |
748 | sample_count = segment_->get_sample_count() - abs_start_samplenum; | |
749 | } | |
750 | ||
751 | if (sample_count > 0) { | |
e91883bb | 752 | decode_data(abs_start_samplenum, sample_count); |
27a3f09b SA |
753 | abs_start_samplenum += sample_count; |
754 | } | |
1b56c646 SA |
755 | } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_); |
756 | ||
757 | if (error_message_.isEmpty() && !decode_interrupt_) { | |
758 | if (sample_count == 0) | |
759 | decode_finished(); | |
27a3f09b | 760 | |
a3ebd556 | 761 | // Wait for new input data or an interrupt was requested |
27a3f09b SA |
762 | unique_lock<mutex> input_wait_lock(input_mutex_); |
763 | decode_input_cond_.wait(input_wait_lock); | |
764 | } | |
765 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
e91883bb SA |
766 | } |
767 | ||
768 | void DecodeSignal::start_srd_session() | |
769 | { | |
a3ebd556 SA |
770 | if (srd_session_) |
771 | stop_srd_session(); | |
e91883bb | 772 | |
a3ebd556 SA |
773 | // Create the session |
774 | srd_session_new(&srd_session_); | |
775 | assert(srd_session_); | |
47747218 | 776 | |
a3ebd556 SA |
777 | // Create the decoders |
778 | srd_decoder_inst *prev_di = nullptr; | |
779 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
780 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
e91883bb | 781 | |
a3ebd556 SA |
782 | if (!di) { |
783 | error_message_ = tr("Failed to create decoder instance"); | |
784 | srd_session_destroy(srd_session_); | |
785 | return; | |
786 | } | |
e91883bb | 787 | |
a3ebd556 SA |
788 | if (prev_di) |
789 | srd_inst_stack(srd_session_, prev_di, di); | |
e91883bb | 790 | |
a3ebd556 | 791 | prev_di = di; |
e91883bb | 792 | } |
a3ebd556 SA |
793 | |
794 | // Start the session | |
795 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
796 | g_variant_new_uint64(samplerate_)); | |
797 | ||
798 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
799 | DecodeSignal::annotation_callback, this); | |
800 | ||
801 | srd_session_start(srd_session_); | |
e91883bb | 802 | } |
47747218 | 803 | |
e91883bb SA |
804 | void DecodeSignal::stop_srd_session() |
805 | { | |
806 | if (srd_session_) { | |
807 | // Destroy the session | |
808 | srd_session_destroy(srd_session_); | |
809 | srd_session_ = nullptr; | |
810 | } | |
47747218 SA |
811 | } |
812 | ||
a8a9222d SA |
813 | void DecodeSignal::connect_input_notifiers() |
814 | { | |
815 | // Disconnect the notification slot from the previous set of signals | |
1b56c646 | 816 | disconnect(this, SLOT(on_data_cleared())); |
a8a9222d SA |
817 | disconnect(this, SLOT(on_data_received())); |
818 | ||
819 | // Connect the currently used signals to our slot | |
820 | for (data::DecodeChannel &ch : channels_) { | |
821 | if (!ch.assigned_signal) | |
822 | continue; | |
823 | ||
1b56c646 SA |
824 | const data::SignalBase *signal = ch.assigned_signal; |
825 | connect(signal, SIGNAL(samples_cleared()), | |
826 | this, SLOT(on_data_cleared())); | |
827 | connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)), | |
a8a9222d SA |
828 | this, SLOT(on_data_received())); |
829 | } | |
830 | } | |
831 | ||
47747218 SA |
832 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) |
833 | { | |
834 | assert(pdata); | |
835 | assert(decoder); | |
836 | ||
837 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
838 | assert(ds); | |
839 | ||
840 | lock_guard<mutex> lock(ds->output_mutex_); | |
841 | ||
842 | const decode::Annotation a(pdata); | |
843 | ||
844 | // Find the row | |
845 | assert(pdata->pdo); | |
846 | assert(pdata->pdo->di); | |
847 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
848 | assert(decc); | |
849 | ||
850 | auto row_iter = ds->rows_.end(); | |
851 | ||
852 | // Try looking up the sub-row of this class | |
853 | const auto r = ds->class_rows_.find(make_pair(decc, a.format())); | |
854 | if (r != ds->class_rows_.end()) | |
855 | row_iter = ds->rows_.find((*r).second); | |
856 | else { | |
857 | // Failing that, use the decoder as a key | |
858 | row_iter = ds->rows_.find(Row(decc)); | |
859 | } | |
860 | ||
861 | assert(row_iter != ds->rows_.end()); | |
862 | if (row_iter == ds->rows_.end()) { | |
863 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
864 | ", format = " << a.format(); | |
865 | assert(false); | |
866 | return; | |
867 | } | |
868 | ||
869 | // Add the annotation | |
870 | (*row_iter).second.push_annotation(a); | |
47747218 SA |
871 | } |
872 | ||
873 | void DecodeSignal::on_capture_state_changed(int state) | |
874 | { | |
875 | // If a new acquisition was started, we need to start decoding from scratch | |
876 | if (state == Session::Running) | |
877 | begin_decode(); | |
878 | } | |
879 | ||
1b56c646 SA |
880 | void DecodeSignal::on_data_cleared() |
881 | { | |
882 | reset_decode(); | |
883 | } | |
884 | ||
47747218 SA |
885 | void DecodeSignal::on_data_received() |
886 | { | |
1b56c646 SA |
887 | if (!logic_mux_thread_.joinable()) |
888 | begin_decode(); | |
889 | else | |
890 | logic_mux_cond_.notify_one(); | |
47747218 SA |
891 | } |
892 | ||
ad908057 SA |
893 | } // namespace data |
894 | } // namespace pv |