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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 | ||
ad908057 SA |
80 | void DecodeSignal::stack_decoder(srd_decoder *decoder) |
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 | ||
416 | // TODO Save decoder stack, channel mapping and decoder options | |
417 | } | |
418 | ||
419 | void DecodeSignal::restore_settings(QSettings &settings) | |
420 | { | |
421 | SignalBase::restore_settings(settings); | |
422 | ||
423 | // TODO Restore decoder stack, channel mapping and decoder options | |
424 | } | |
425 | ||
9f97b357 SA |
426 | void DecodeSignal::update_channel_list() |
427 | { | |
47747218 | 428 | vector<data::DecodeChannel> prev_channels = channels_; |
9f97b357 SA |
429 | channels_.clear(); |
430 | ||
431 | uint16_t id = 0; | |
432 | ||
433 | // Copy existing entries, create new as needed | |
47747218 | 434 | for (shared_ptr<Decoder> decoder : stack_) { |
9f97b357 SA |
435 | const srd_decoder* srd_d = decoder->decoder(); |
436 | const GSList *l; | |
437 | ||
438 | // Mandatory channels | |
439 | for (l = srd_d->channels; l; l = l->next) { | |
440 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
441 | bool ch_added = false; | |
442 | ||
443 | // Copy but update ID if this channel was in the list before | |
47747218 | 444 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
445 | if (ch.pdch_ == pdch) { |
446 | ch.id = id++; | |
447 | channels_.push_back(ch); | |
448 | ch_added = true; | |
449 | break; | |
450 | } | |
451 | ||
452 | if (!ch_added) { | |
453 | // Create new entry without a mapped signal | |
454 | data::DecodeChannel ch = {id++, false, nullptr, | |
455 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
456 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
457 | channels_.push_back(ch); | |
458 | } | |
459 | } | |
460 | ||
461 | // Optional channels | |
462 | for (l = srd_d->opt_channels; l; l = l->next) { | |
463 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
464 | bool ch_added = false; | |
465 | ||
466 | // Copy but update ID if this channel was in the list before | |
47747218 | 467 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
468 | if (ch.pdch_ == pdch) { |
469 | ch.id = id++; | |
470 | channels_.push_back(ch); | |
471 | ch_added = true; | |
472 | break; | |
473 | } | |
474 | ||
475 | if (!ch_added) { | |
476 | // Create new entry without a mapped signal | |
477 | data::DecodeChannel ch = {id++, true, nullptr, | |
478 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
479 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
480 | channels_.push_back(ch); | |
481 | } | |
482 | } | |
483 | } | |
484 | ||
47747218 SA |
485 | // Invalidate the logic output data if the channel assignment changed |
486 | if (prev_channels.size() != channels_.size()) { | |
487 | // The number of channels changed, there's definitely a difference | |
488 | logic_mux_data_invalid_ = true; | |
489 | } else { | |
490 | // Same number but assignment may still differ, so compare all channels | |
491 | for (size_t i = 0; i < channels_.size(); i++) { | |
492 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
493 | const data::DecodeChannel &ch = channels_[i]; | |
494 | ||
495 | if ((p_ch.pdch_ != ch.pdch_) || | |
496 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
497 | logic_mux_data_invalid_ = true; | |
498 | break; | |
499 | } | |
500 | } | |
501 | ||
502 | } | |
503 | ||
9f97b357 SA |
504 | channels_updated(); |
505 | } | |
506 | ||
27a3f09b | 507 | void DecodeSignal::commit_decoder_channels() |
ad908057 | 508 | { |
27a3f09b SA |
509 | // Submit channel list to every decoder, containing only the relevant channels |
510 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
511 | vector<data::DecodeChannel*> channel_list; | |
512 | ||
513 | for (data::DecodeChannel &ch : channels_) | |
514 | if (ch.decoder_ == dec) | |
515 | channel_list.push_back(&ch); | |
47747218 | 516 | |
27a3f09b SA |
517 | dec->set_channels(channel_list); |
518 | } | |
47747218 SA |
519 | } |
520 | ||
27a3f09b | 521 | void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end) |
47747218 | 522 | { |
27a3f09b SA |
523 | // Enforce end to be greater than start |
524 | if (end <= start) | |
525 | return; | |
526 | ||
527 | // Fetch all segments and their data | |
528 | // TODO Currently, we assume only a single segment exists | |
529 | vector<shared_ptr<LogicSegment> > segments; | |
530 | vector<const uint8_t*> signal_data; | |
531 | vector<uint8_t> signal_in_bytepos; | |
532 | vector<uint8_t> signal_in_bitpos; | |
533 | ||
534 | for (data::DecodeChannel &ch : channels_) | |
535 | if (ch.assigned_signal) { | |
536 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
537 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
538 | segments.push_back(segment); | |
539 | signal_data.push_back(segment->get_samples(start, end)); | |
540 | ||
541 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
542 | signal_in_bytepos.push_back(bitpos / 8); | |
543 | signal_in_bitpos.push_back(bitpos % 8); | |
544 | } | |
545 | ||
546 | // Perform the muxing of signal data into the output data | |
547 | uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()]; | |
548 | unsigned int signal_count = signal_data.size(); | |
549 | ||
550 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
551 | int bitpos = 0; | |
552 | uint8_t bytepos = 0; | |
553 | ||
554 | const int out_sample_pos = sample_cnt * segment_->unit_size(); | |
555 | for (unsigned int i = 0; i < segment_->unit_size(); i++) | |
556 | output[out_sample_pos + i] = 0; | |
47747218 | 557 | |
27a3f09b SA |
558 | for (unsigned int i = 0; i < signal_count; i++) { |
559 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
560 | const uint8_t in_sample = 1 & | |
561 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
47747218 | 562 | |
27a3f09b SA |
563 | const uint8_t out_sample = output[out_sample_pos + bytepos]; |
564 | ||
565 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
566 | ||
567 | bitpos++; | |
568 | if (bitpos > 7) { | |
569 | bitpos = 0; | |
570 | bytepos++; | |
571 | } | |
572 | } | |
47747218 SA |
573 | } |
574 | ||
27a3f09b SA |
575 | segment_->append_payload(output, (end - start) * segment_->unit_size()); |
576 | delete[] output; | |
577 | ||
578 | for (const uint8_t* data : signal_data) | |
579 | delete[] data; | |
580 | } | |
581 | ||
582 | void DecodeSignal::logic_mux_proc() | |
583 | { | |
584 | do { | |
27a3f09b SA |
585 | const uint64_t input_sample_count = get_working_sample_count(); |
586 | const uint64_t output_sample_count = segment_->get_sample_count(); | |
587 | ||
588 | const uint64_t samples_to_process = | |
589 | (input_sample_count > output_sample_count) ? | |
590 | (input_sample_count - output_sample_count) : 0; | |
591 | ||
592 | // Process the samples if necessary... | |
593 | if (samples_to_process > 0) { | |
594 | const uint64_t unit_size = segment_->unit_size(); | |
595 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
596 | ||
597 | uint64_t processed_samples = 0; | |
598 | do { | |
599 | const uint64_t start_sample = output_sample_count + processed_samples; | |
600 | const uint64_t sample_count = | |
601 | min(samples_to_process - processed_samples, chunk_sample_count); | |
602 | ||
603 | mux_logic_samples(start_sample, start_sample + sample_count); | |
604 | processed_samples += sample_count; | |
605 | ||
606 | // ...and process the newly muxed logic data | |
607 | decode_input_cond_.notify_one(); | |
608 | } while (processed_samples < samples_to_process); | |
609 | } | |
610 | ||
1ec191ed | 611 | if (samples_to_process == 0) { |
27a3f09b SA |
612 | // Wait for more input |
613 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
614 | logic_mux_cond_.wait(logic_mux_lock); | |
615 | } | |
1ec191ed | 616 | } while (!logic_mux_interrupt_); |
27a3f09b SA |
617 | |
618 | // No more input data and session is stopped, let the decode thread | |
619 | // process any pending data, terminate and release the global SRD mutex | |
620 | // in order to let other decoders run | |
621 | decode_input_cond_.notify_one(); | |
47747218 SA |
622 | } |
623 | ||
a3ebd556 SA |
624 | void DecodeSignal::query_input_metadata() |
625 | { | |
626 | // Update the samplerate and start time because we cannot start | |
627 | // the libsrd session without the current samplerate | |
628 | ||
629 | // TODO Currently we assume all channels have the same sample rate | |
630 | // and start time | |
631 | bool samplerate_valid = false; | |
632 | ||
633 | auto any_channel = find_if(channels_.begin(), channels_.end(), | |
634 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
635 | ||
636 | shared_ptr<Logic> logic_data = | |
637 | any_channel->assigned_signal->logic_data(); | |
638 | ||
639 | do { | |
640 | if (!logic_data->logic_segments().empty()) { | |
641 | shared_ptr<LogicSegment> first_segment = | |
642 | any_channel->assigned_signal->logic_data()->logic_segments().front(); | |
643 | start_time_ = first_segment->start_time(); | |
644 | samplerate_ = first_segment->samplerate(); | |
645 | if (samplerate_ > 0) | |
646 | samplerate_valid = true; | |
647 | } | |
648 | ||
1ec191ed SA |
649 | if (!samplerate_valid) { |
650 | // Wait until input data is available or an interrupt was requested | |
651 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
652 | decode_input_cond_.wait(input_wait_lock); | |
653 | } | |
a3ebd556 SA |
654 | } while (!samplerate_valid && !decode_interrupt_); |
655 | } | |
656 | ||
47747218 | 657 | void DecodeSignal::decode_data( |
e91883bb | 658 | const int64_t abs_start_samplenum, const int64_t sample_count) |
47747218 | 659 | { |
27a3f09b SA |
660 | const int64_t unit_size = segment_->unit_size(); |
661 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
47747218 SA |
662 | |
663 | for (int64_t i = abs_start_samplenum; | |
664 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
665 | i += chunk_sample_count) { | |
666 | ||
667 | const int64_t chunk_end = min(i + chunk_sample_count, | |
668 | abs_start_samplenum + sample_count); | |
669 | ||
670 | const uint8_t* chunk = segment_->get_samples(i, chunk_end); | |
671 | ||
e91883bb | 672 | if (srd_session_send(srd_session_, i, chunk_end, chunk, |
47747218 SA |
673 | (chunk_end - i) * unit_size, unit_size) != SRD_OK) { |
674 | error_message_ = tr("Decoder reported an error"); | |
675 | delete[] chunk; | |
676 | break; | |
677 | } | |
a3ebd556 | 678 | |
47747218 SA |
679 | delete[] chunk; |
680 | ||
681 | { | |
682 | lock_guard<mutex> lock(output_mutex_); | |
683 | samples_decoded_ = chunk_end; | |
684 | } | |
1b56c646 SA |
685 | |
686 | // Notify the frontend that we processed some data and | |
687 | // possibly have new annotations as well | |
688 | new_annotations(); | |
47747218 SA |
689 | } |
690 | } | |
691 | ||
692 | void DecodeSignal::decode_proc() | |
693 | { | |
a3ebd556 SA |
694 | query_input_metadata(); |
695 | ||
696 | if (decode_interrupt_) | |
697 | return; | |
698 | ||
e91883bb | 699 | start_srd_session(); |
47747218 | 700 | |
27a3f09b SA |
701 | uint64_t sample_count; |
702 | uint64_t abs_start_samplenum = 0; | |
47747218 | 703 | do { |
27a3f09b SA |
704 | // Keep processing new samples until we exhaust the input data |
705 | do { | |
e91883bb SA |
706 | // Prevent any other decode threads from accessing libsigrokdecode |
707 | lock_guard<mutex> srd_lock(global_srd_mutex_); | |
708 | ||
27a3f09b SA |
709 | { |
710 | lock_guard<mutex> input_lock(input_mutex_); | |
711 | sample_count = segment_->get_sample_count() - abs_start_samplenum; | |
712 | } | |
713 | ||
714 | if (sample_count > 0) { | |
e91883bb | 715 | decode_data(abs_start_samplenum, sample_count); |
27a3f09b SA |
716 | abs_start_samplenum += sample_count; |
717 | } | |
1b56c646 SA |
718 | } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_); |
719 | ||
720 | if (error_message_.isEmpty() && !decode_interrupt_) { | |
721 | if (sample_count == 0) | |
722 | decode_finished(); | |
27a3f09b | 723 | |
a3ebd556 | 724 | // Wait for new input data or an interrupt was requested |
27a3f09b SA |
725 | unique_lock<mutex> input_wait_lock(input_mutex_); |
726 | decode_input_cond_.wait(input_wait_lock); | |
727 | } | |
728 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
e91883bb SA |
729 | } |
730 | ||
731 | void DecodeSignal::start_srd_session() | |
732 | { | |
a3ebd556 SA |
733 | if (srd_session_) |
734 | stop_srd_session(); | |
e91883bb | 735 | |
a3ebd556 SA |
736 | // Create the session |
737 | srd_session_new(&srd_session_); | |
738 | assert(srd_session_); | |
47747218 | 739 | |
a3ebd556 SA |
740 | // Create the decoders |
741 | srd_decoder_inst *prev_di = nullptr; | |
742 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
743 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
e91883bb | 744 | |
a3ebd556 SA |
745 | if (!di) { |
746 | error_message_ = tr("Failed to create decoder instance"); | |
747 | srd_session_destroy(srd_session_); | |
748 | return; | |
749 | } | |
e91883bb | 750 | |
a3ebd556 SA |
751 | if (prev_di) |
752 | srd_inst_stack(srd_session_, prev_di, di); | |
e91883bb | 753 | |
a3ebd556 | 754 | prev_di = di; |
e91883bb | 755 | } |
a3ebd556 SA |
756 | |
757 | // Start the session | |
758 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
759 | g_variant_new_uint64(samplerate_)); | |
760 | ||
761 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
762 | DecodeSignal::annotation_callback, this); | |
763 | ||
764 | srd_session_start(srd_session_); | |
e91883bb | 765 | } |
47747218 | 766 | |
e91883bb SA |
767 | void DecodeSignal::stop_srd_session() |
768 | { | |
769 | if (srd_session_) { | |
770 | // Destroy the session | |
771 | srd_session_destroy(srd_session_); | |
772 | srd_session_ = nullptr; | |
773 | } | |
47747218 SA |
774 | } |
775 | ||
a8a9222d SA |
776 | void DecodeSignal::connect_input_notifiers() |
777 | { | |
778 | // Disconnect the notification slot from the previous set of signals | |
1b56c646 | 779 | disconnect(this, SLOT(on_data_cleared())); |
a8a9222d SA |
780 | disconnect(this, SLOT(on_data_received())); |
781 | ||
782 | // Connect the currently used signals to our slot | |
783 | for (data::DecodeChannel &ch : channels_) { | |
784 | if (!ch.assigned_signal) | |
785 | continue; | |
786 | ||
1b56c646 SA |
787 | const data::SignalBase *signal = ch.assigned_signal; |
788 | connect(signal, SIGNAL(samples_cleared()), | |
789 | this, SLOT(on_data_cleared())); | |
790 | connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)), | |
a8a9222d SA |
791 | this, SLOT(on_data_received())); |
792 | } | |
793 | } | |
794 | ||
47747218 SA |
795 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) |
796 | { | |
797 | assert(pdata); | |
798 | assert(decoder); | |
799 | ||
800 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
801 | assert(ds); | |
802 | ||
803 | lock_guard<mutex> lock(ds->output_mutex_); | |
804 | ||
805 | const decode::Annotation a(pdata); | |
806 | ||
807 | // Find the row | |
808 | assert(pdata->pdo); | |
809 | assert(pdata->pdo->di); | |
810 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
811 | assert(decc); | |
812 | ||
813 | auto row_iter = ds->rows_.end(); | |
814 | ||
815 | // Try looking up the sub-row of this class | |
816 | const auto r = ds->class_rows_.find(make_pair(decc, a.format())); | |
817 | if (r != ds->class_rows_.end()) | |
818 | row_iter = ds->rows_.find((*r).second); | |
819 | else { | |
820 | // Failing that, use the decoder as a key | |
821 | row_iter = ds->rows_.find(Row(decc)); | |
822 | } | |
823 | ||
824 | assert(row_iter != ds->rows_.end()); | |
825 | if (row_iter == ds->rows_.end()) { | |
826 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
827 | ", format = " << a.format(); | |
828 | assert(false); | |
829 | return; | |
830 | } | |
831 | ||
832 | // Add the annotation | |
833 | (*row_iter).second.push_annotation(a); | |
47747218 SA |
834 | } |
835 | ||
836 | void DecodeSignal::on_capture_state_changed(int state) | |
837 | { | |
838 | // If a new acquisition was started, we need to start decoding from scratch | |
839 | if (state == Session::Running) | |
840 | begin_decode(); | |
841 | } | |
842 | ||
1b56c646 SA |
843 | void DecodeSignal::on_data_cleared() |
844 | { | |
845 | reset_decode(); | |
846 | } | |
847 | ||
47747218 SA |
848 | void DecodeSignal::on_data_received() |
849 | { | |
1b56c646 SA |
850 | if (!logic_mux_thread_.joinable()) |
851 | begin_decode(); | |
852 | else | |
853 | logic_mux_cond_.notify_one(); | |
47747218 SA |
854 | } |
855 | ||
ad908057 SA |
856 | } // namespace data |
857 | } // namespace pv |