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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 | { |
47747218 SA |
72 | if (decode_thread_.joinable()) { |
73 | decode_interrupt_ = true; | |
74 | decode_input_cond_.notify_one(); | |
75 | decode_thread_.join(); | |
76 | } | |
ad908057 | 77 | |
47747218 SA |
78 | if (logic_mux_thread_.joinable()) { |
79 | logic_mux_interrupt_ = true; | |
80 | logic_mux_cond_.notify_one(); | |
81 | logic_mux_thread_.join(); | |
82 | } | |
e91883bb SA |
83 | |
84 | stop_srd_session(); | |
ad908057 SA |
85 | } |
86 | ||
47747218 | 87 | const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const |
ecd07c20 | 88 | { |
47747218 | 89 | return stack_; |
ecd07c20 SA |
90 | } |
91 | ||
ad908057 SA |
92 | void DecodeSignal::stack_decoder(srd_decoder *decoder) |
93 | { | |
94 | assert(decoder); | |
47747218 SA |
95 | stack_.push_back(make_shared<decode::Decoder>(decoder)); |
96 | ||
97 | // Set name if this decoder is the first in the list | |
98 | if (stack_.size() == 1) | |
99 | set_name(QString::fromUtf8(decoder->name)); | |
132a5c6d | 100 | |
27a3f09b | 101 | // Include the newly created decode channels in the channel lists |
9f97b357 | 102 | update_channel_list(); |
132a5c6d SA |
103 | |
104 | auto_assign_signals(); | |
27a3f09b | 105 | commit_decoder_channels(); |
47747218 | 106 | begin_decode(); |
ad908057 SA |
107 | } |
108 | ||
109 | void DecodeSignal::remove_decoder(int index) | |
110 | { | |
47747218 SA |
111 | assert(index >= 0); |
112 | assert(index < (int)stack_.size()); | |
113 | ||
114 | // Find the decoder in the stack | |
115 | auto iter = stack_.begin(); | |
116 | for (int i = 0; i < index; i++, iter++) | |
117 | assert(iter != stack_.end()); | |
118 | ||
119 | // Delete the element | |
120 | stack_.erase(iter); | |
121 | ||
122 | // Update channels and decoded data | |
9f97b357 | 123 | update_channel_list(); |
47747218 | 124 | begin_decode(); |
ad908057 SA |
125 | } |
126 | ||
127 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
128 | { | |
47747218 | 129 | auto iter = stack_.cbegin(); |
ad908057 | 130 | for (int i = 0; i < index; i++, iter++) |
47747218 | 131 | assert(iter != stack_.end()); |
ad908057 SA |
132 | |
133 | shared_ptr<Decoder> dec = *iter; | |
134 | ||
135 | // Toggle decoder visibility | |
136 | bool state = false; | |
137 | if (dec) { | |
138 | state = !dec->shown(); | |
139 | dec->show(state); | |
140 | } | |
141 | ||
142 | return state; | |
143 | } | |
144 | ||
47747218 SA |
145 | void DecodeSignal::reset_decode() |
146 | { | |
e91883bb SA |
147 | stop_srd_session(); |
148 | ||
47747218 SA |
149 | frame_complete_ = false; |
150 | samples_decoded_ = 0; | |
151 | error_message_ = QString(); | |
152 | rows_.clear(); | |
153 | class_rows_.clear(); | |
154 | } | |
155 | ||
946b52e1 SA |
156 | void DecodeSignal::begin_decode() |
157 | { | |
47747218 SA |
158 | if (decode_thread_.joinable()) { |
159 | decode_interrupt_ = true; | |
160 | decode_input_cond_.notify_one(); | |
161 | decode_thread_.join(); | |
162 | } | |
163 | ||
164 | if (logic_mux_thread_.joinable()) { | |
165 | logic_mux_interrupt_ = true; | |
166 | logic_mux_cond_.notify_one(); | |
167 | logic_mux_thread_.join(); | |
168 | } | |
169 | ||
170 | reset_decode(); | |
171 | ||
27a3f09b SA |
172 | if (stack_.size() == 0) { |
173 | error_message_ = tr("No decoders"); | |
174 | return; | |
175 | } | |
176 | ||
177 | assert(channels_.size() > 0); | |
178 | ||
179 | if (get_assigned_signal_count() == 0) { | |
180 | error_message_ = tr("There are no channels assigned to this decoder"); | |
181 | return; | |
182 | } | |
183 | ||
04627946 SA |
184 | // Make sure that all assigned channels still provide logic data |
185 | // (can happen when a converted signal was assigned but the | |
186 | // conversion removed in the meanwhile) | |
187 | for (data::DecodeChannel &ch : channels_) | |
188 | if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr)) | |
189 | ch.assigned_signal = nullptr; | |
190 | ||
47747218 SA |
191 | // Check that all decoders have the required channels |
192 | for (const shared_ptr<decode::Decoder> &dec : stack_) | |
193 | if (!dec->have_required_channels()) { | |
194 | error_message_ = tr("One or more required channels " | |
195 | "have not been specified"); | |
196 | return; | |
197 | } | |
198 | ||
199 | // Add annotation classes | |
200 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
201 | assert(dec); | |
202 | const srd_decoder *const decc = dec->decoder(); | |
203 | assert(dec->decoder()); | |
204 | ||
205 | // Add a row for the decoder if it doesn't have a row list | |
206 | if (!decc->annotation_rows) | |
207 | rows_[Row(decc)] = decode::RowData(); | |
208 | ||
209 | // Add the decoder rows | |
210 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
211 | const srd_decoder_annotation_row *const ann_row = | |
212 | (srd_decoder_annotation_row *)l->data; | |
213 | assert(ann_row); | |
214 | ||
215 | const Row row(decc, ann_row); | |
216 | ||
217 | // Add a new empty row data object | |
218 | rows_[row] = decode::RowData(); | |
219 | ||
220 | // Map out all the classes | |
221 | for (const GSList *ll = ann_row->ann_classes; | |
222 | ll; ll = ll->next) | |
223 | class_rows_[make_pair(decc, | |
224 | GPOINTER_TO_INT(ll->data))] = row; | |
225 | } | |
226 | } | |
227 | ||
27a3f09b SA |
228 | // Free the logic data and its segment(s) if it needs to be updated |
229 | if (logic_mux_data_invalid_) | |
230 | logic_mux_data_.reset(); | |
231 | ||
232 | if (!logic_mux_data_) { | |
233 | const int64_t ch_count = get_assigned_signal_count(); | |
234 | const int64_t unit_size = (ch_count + 7) / 8; | |
235 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
236 | segment_ = make_shared<LogicSegment>(*logic_mux_data_, unit_size, samplerate_); | |
237 | logic_mux_data_->push_segment(segment_); | |
238 | } | |
47747218 | 239 | |
27a3f09b SA |
240 | // Make sure the logic output data is complete and up-to-date |
241 | logic_mux_interrupt_ = false; | |
242 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
243 | ||
244 | // Decode the muxed logic data | |
47747218 SA |
245 | decode_interrupt_ = false; |
246 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
a8a9222d SA |
247 | |
248 | // Receive notifications when new sample data is available | |
249 | connect_input_notifiers(); | |
946b52e1 SA |
250 | } |
251 | ||
ecd07c20 SA |
252 | QString DecodeSignal::error_message() const |
253 | { | |
47747218 SA |
254 | lock_guard<mutex> lock(output_mutex_); |
255 | return error_message_; | |
ecd07c20 SA |
256 | } |
257 | ||
47747218 | 258 | const vector<data::DecodeChannel> DecodeSignal::get_channels() const |
9f97b357 SA |
259 | { |
260 | return channels_; | |
261 | } | |
262 | ||
132a5c6d SA |
263 | void DecodeSignal::auto_assign_signals() |
264 | { | |
47747218 SA |
265 | bool new_assignment = false; |
266 | ||
132a5c6d SA |
267 | // Try to auto-select channels that don't have signals assigned yet |
268 | for (data::DecodeChannel &ch : channels_) { | |
269 | if (ch.assigned_signal) | |
270 | continue; | |
271 | ||
692f6093 SA |
272 | for (shared_ptr<data::SignalBase> s : session_.signalbases()) { |
273 | const QString ch_name = ch.name.toLower(); | |
274 | const QString s_name = s->name().toLower(); | |
275 | ||
276 | if (s->logic_data() && | |
277 | ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) { | |
132a5c6d | 278 | ch.assigned_signal = s.get(); |
47747218 SA |
279 | new_assignment = true; |
280 | } | |
692f6093 | 281 | } |
47747218 SA |
282 | } |
283 | ||
284 | if (new_assignment) { | |
285 | logic_mux_data_invalid_ = true; | |
27a3f09b | 286 | commit_decoder_channels(); |
47747218 | 287 | channels_updated(); |
132a5c6d SA |
288 | } |
289 | } | |
290 | ||
9f97b357 SA |
291 | void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal) |
292 | { | |
293 | for (data::DecodeChannel &ch : channels_) | |
47747218 | 294 | if (ch.id == channel_id) { |
9f97b357 | 295 | ch.assigned_signal = signal; |
47747218 SA |
296 | logic_mux_data_invalid_ = true; |
297 | } | |
9f97b357 | 298 | |
27a3f09b | 299 | commit_decoder_channels(); |
9f97b357 | 300 | channels_updated(); |
47747218 | 301 | begin_decode(); |
9f97b357 SA |
302 | } |
303 | ||
27a3f09b SA |
304 | int DecodeSignal::get_assigned_signal_count() const |
305 | { | |
306 | // Count all channels that have a signal assigned to them | |
307 | return count_if(channels_.begin(), channels_.end(), | |
308 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
309 | } | |
310 | ||
9f97b357 SA |
311 | void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state) |
312 | { | |
313 | for (data::DecodeChannel &ch : channels_) | |
314 | if (ch.id == channel_id) | |
315 | ch.initial_pin_state = init_state; | |
316 | ||
317 | channels_updated(); | |
318 | ||
47747218 | 319 | begin_decode(); |
9f97b357 SA |
320 | } |
321 | ||
ff83d980 SA |
322 | double DecodeSignal::samplerate() const |
323 | { | |
47747218 | 324 | return samplerate_; |
ff83d980 SA |
325 | } |
326 | ||
327 | const pv::util::Timestamp& DecodeSignal::start_time() const | |
328 | { | |
47747218 | 329 | return start_time_; |
ff83d980 SA |
330 | } |
331 | ||
0c5fe73e SA |
332 | int64_t DecodeSignal::get_working_sample_count() const |
333 | { | |
334 | // The working sample count is the highest sample number for | |
335 | // which all used signals have data available, so go through | |
336 | // all channels and use the lowest overall sample count of the | |
337 | // current segment | |
338 | ||
339 | // TODO Currently, we assume only a single segment exists | |
340 | ||
341 | int64_t count = std::numeric_limits<int64_t>::max(); | |
342 | bool no_signals_assigned = true; | |
343 | ||
344 | for (const data::DecodeChannel &ch : channels_) | |
345 | if (ch.assigned_signal) { | |
346 | no_signals_assigned = false; | |
347 | ||
348 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
349 | if (!logic_data || logic_data->logic_segments().empty()) | |
350 | return 0; | |
351 | ||
352 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
353 | count = min(count, (int64_t)segment->get_sample_count()); | |
354 | } | |
355 | ||
356 | return (no_signals_assigned ? 0 : count); | |
357 | } | |
358 | ||
359 | int64_t DecodeSignal::get_decoded_sample_count() const | |
ff83d980 | 360 | { |
47747218 SA |
361 | lock_guard<mutex> decode_lock(output_mutex_); |
362 | return samples_decoded_; | |
ff83d980 SA |
363 | } |
364 | ||
ecd07c20 SA |
365 | vector<Row> DecodeSignal::visible_rows() const |
366 | { | |
47747218 SA |
367 | lock_guard<mutex> lock(output_mutex_); |
368 | ||
369 | vector<Row> rows; | |
370 | ||
371 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
372 | assert(dec); | |
373 | if (!dec->shown()) | |
374 | continue; | |
375 | ||
376 | const srd_decoder *const decc = dec->decoder(); | |
377 | assert(dec->decoder()); | |
378 | ||
379 | // Add a row for the decoder if it doesn't have a row list | |
380 | if (!decc->annotation_rows) | |
381 | rows.emplace_back(decc); | |
382 | ||
383 | // Add the decoder rows | |
384 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
385 | const srd_decoder_annotation_row *const ann_row = | |
386 | (srd_decoder_annotation_row *)l->data; | |
387 | assert(ann_row); | |
388 | rows.emplace_back(decc, ann_row); | |
389 | } | |
390 | } | |
391 | ||
392 | return rows; | |
ecd07c20 SA |
393 | } |
394 | ||
395 | void DecodeSignal::get_annotation_subset( | |
396 | vector<pv::data::decode::Annotation> &dest, | |
397 | const decode::Row &row, uint64_t start_sample, | |
398 | uint64_t end_sample) const | |
399 | { | |
47747218 SA |
400 | lock_guard<mutex> lock(output_mutex_); |
401 | ||
402 | const auto iter = rows_.find(row); | |
403 | if (iter != rows_.end()) | |
404 | (*iter).second.get_annotation_subset(dest, | |
405 | start_sample, end_sample); | |
406 | } | |
407 | ||
408 | void DecodeSignal::save_settings(QSettings &settings) const | |
409 | { | |
410 | SignalBase::save_settings(settings); | |
411 | ||
412 | // TODO Save decoder stack, channel mapping and decoder options | |
413 | } | |
414 | ||
415 | void DecodeSignal::restore_settings(QSettings &settings) | |
416 | { | |
417 | SignalBase::restore_settings(settings); | |
418 | ||
419 | // TODO Restore decoder stack, channel mapping and decoder options | |
420 | } | |
421 | ||
9f97b357 SA |
422 | void DecodeSignal::update_channel_list() |
423 | { | |
47747218 | 424 | vector<data::DecodeChannel> prev_channels = channels_; |
9f97b357 SA |
425 | channels_.clear(); |
426 | ||
427 | uint16_t id = 0; | |
428 | ||
429 | // Copy existing entries, create new as needed | |
47747218 | 430 | for (shared_ptr<Decoder> decoder : stack_) { |
9f97b357 SA |
431 | const srd_decoder* srd_d = decoder->decoder(); |
432 | const GSList *l; | |
433 | ||
434 | // Mandatory channels | |
435 | for (l = srd_d->channels; l; l = l->next) { | |
436 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
437 | bool ch_added = false; | |
438 | ||
439 | // Copy but update ID if this channel was in the list before | |
47747218 | 440 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
441 | if (ch.pdch_ == pdch) { |
442 | ch.id = id++; | |
443 | channels_.push_back(ch); | |
444 | ch_added = true; | |
445 | break; | |
446 | } | |
447 | ||
448 | if (!ch_added) { | |
449 | // Create new entry without a mapped signal | |
450 | data::DecodeChannel ch = {id++, false, nullptr, | |
451 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
452 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
453 | channels_.push_back(ch); | |
454 | } | |
455 | } | |
456 | ||
457 | // Optional channels | |
458 | for (l = srd_d->opt_channels; l; l = l->next) { | |
459 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
460 | bool ch_added = false; | |
461 | ||
462 | // Copy but update ID if this channel was in the list before | |
47747218 | 463 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
464 | if (ch.pdch_ == pdch) { |
465 | ch.id = id++; | |
466 | channels_.push_back(ch); | |
467 | ch_added = true; | |
468 | break; | |
469 | } | |
470 | ||
471 | if (!ch_added) { | |
472 | // Create new entry without a mapped signal | |
473 | data::DecodeChannel ch = {id++, true, nullptr, | |
474 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
475 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
476 | channels_.push_back(ch); | |
477 | } | |
478 | } | |
479 | } | |
480 | ||
47747218 SA |
481 | // Invalidate the logic output data if the channel assignment changed |
482 | if (prev_channels.size() != channels_.size()) { | |
483 | // The number of channels changed, there's definitely a difference | |
484 | logic_mux_data_invalid_ = true; | |
485 | } else { | |
486 | // Same number but assignment may still differ, so compare all channels | |
487 | for (size_t i = 0; i < channels_.size(); i++) { | |
488 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
489 | const data::DecodeChannel &ch = channels_[i]; | |
490 | ||
491 | if ((p_ch.pdch_ != ch.pdch_) || | |
492 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
493 | logic_mux_data_invalid_ = true; | |
494 | break; | |
495 | } | |
496 | } | |
497 | ||
498 | } | |
499 | ||
9f97b357 SA |
500 | channels_updated(); |
501 | } | |
502 | ||
27a3f09b | 503 | void DecodeSignal::commit_decoder_channels() |
ad908057 | 504 | { |
27a3f09b SA |
505 | // Submit channel list to every decoder, containing only the relevant channels |
506 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
507 | vector<data::DecodeChannel*> channel_list; | |
508 | ||
509 | for (data::DecodeChannel &ch : channels_) | |
510 | if (ch.decoder_ == dec) | |
511 | channel_list.push_back(&ch); | |
47747218 | 512 | |
27a3f09b SA |
513 | dec->set_channels(channel_list); |
514 | } | |
47747218 SA |
515 | } |
516 | ||
27a3f09b | 517 | void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end) |
47747218 | 518 | { |
27a3f09b SA |
519 | // Enforce end to be greater than start |
520 | if (end <= start) | |
521 | return; | |
522 | ||
523 | // Fetch all segments and their data | |
524 | // TODO Currently, we assume only a single segment exists | |
525 | vector<shared_ptr<LogicSegment> > segments; | |
526 | vector<const uint8_t*> signal_data; | |
527 | vector<uint8_t> signal_in_bytepos; | |
528 | vector<uint8_t> signal_in_bitpos; | |
529 | ||
530 | for (data::DecodeChannel &ch : channels_) | |
531 | if (ch.assigned_signal) { | |
532 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
533 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
534 | segments.push_back(segment); | |
535 | signal_data.push_back(segment->get_samples(start, end)); | |
536 | ||
537 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
538 | signal_in_bytepos.push_back(bitpos / 8); | |
539 | signal_in_bitpos.push_back(bitpos % 8); | |
540 | } | |
541 | ||
542 | // Perform the muxing of signal data into the output data | |
543 | uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()]; | |
544 | unsigned int signal_count = signal_data.size(); | |
545 | ||
546 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
547 | int bitpos = 0; | |
548 | uint8_t bytepos = 0; | |
549 | ||
550 | const int out_sample_pos = sample_cnt * segment_->unit_size(); | |
551 | for (unsigned int i = 0; i < segment_->unit_size(); i++) | |
552 | output[out_sample_pos + i] = 0; | |
47747218 | 553 | |
27a3f09b SA |
554 | for (unsigned int i = 0; i < signal_count; i++) { |
555 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
556 | const uint8_t in_sample = 1 & | |
557 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
47747218 | 558 | |
27a3f09b SA |
559 | const uint8_t out_sample = output[out_sample_pos + bytepos]; |
560 | ||
561 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
562 | ||
563 | bitpos++; | |
564 | if (bitpos > 7) { | |
565 | bitpos = 0; | |
566 | bytepos++; | |
567 | } | |
568 | } | |
47747218 SA |
569 | } |
570 | ||
27a3f09b SA |
571 | segment_->append_payload(output, (end - start) * segment_->unit_size()); |
572 | delete[] output; | |
573 | ||
574 | for (const uint8_t* data : signal_data) | |
575 | delete[] data; | |
576 | } | |
577 | ||
578 | void DecodeSignal::logic_mux_proc() | |
579 | { | |
580 | do { | |
27a3f09b SA |
581 | const uint64_t input_sample_count = get_working_sample_count(); |
582 | const uint64_t output_sample_count = segment_->get_sample_count(); | |
583 | ||
584 | const uint64_t samples_to_process = | |
585 | (input_sample_count > output_sample_count) ? | |
586 | (input_sample_count - output_sample_count) : 0; | |
587 | ||
588 | // Process the samples if necessary... | |
589 | if (samples_to_process > 0) { | |
590 | const uint64_t unit_size = segment_->unit_size(); | |
591 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
592 | ||
593 | uint64_t processed_samples = 0; | |
594 | do { | |
595 | const uint64_t start_sample = output_sample_count + processed_samples; | |
596 | const uint64_t sample_count = | |
597 | min(samples_to_process - processed_samples, chunk_sample_count); | |
598 | ||
599 | mux_logic_samples(start_sample, start_sample + sample_count); | |
600 | processed_samples += sample_count; | |
601 | ||
602 | // ...and process the newly muxed logic data | |
603 | decode_input_cond_.notify_one(); | |
604 | } while (processed_samples < samples_to_process); | |
605 | } | |
606 | ||
1ec191ed | 607 | if (samples_to_process == 0) { |
27a3f09b SA |
608 | // Wait for more input |
609 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
610 | logic_mux_cond_.wait(logic_mux_lock); | |
611 | } | |
1ec191ed | 612 | } while (!logic_mux_interrupt_); |
27a3f09b SA |
613 | |
614 | // No more input data and session is stopped, let the decode thread | |
615 | // process any pending data, terminate and release the global SRD mutex | |
616 | // in order to let other decoders run | |
617 | decode_input_cond_.notify_one(); | |
47747218 SA |
618 | } |
619 | ||
a3ebd556 SA |
620 | void DecodeSignal::query_input_metadata() |
621 | { | |
622 | // Update the samplerate and start time because we cannot start | |
623 | // the libsrd session without the current samplerate | |
624 | ||
625 | // TODO Currently we assume all channels have the same sample rate | |
626 | // and start time | |
627 | bool samplerate_valid = false; | |
628 | ||
629 | auto any_channel = find_if(channels_.begin(), channels_.end(), | |
630 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
631 | ||
632 | shared_ptr<Logic> logic_data = | |
633 | any_channel->assigned_signal->logic_data(); | |
634 | ||
635 | do { | |
636 | if (!logic_data->logic_segments().empty()) { | |
637 | shared_ptr<LogicSegment> first_segment = | |
638 | any_channel->assigned_signal->logic_data()->logic_segments().front(); | |
639 | start_time_ = first_segment->start_time(); | |
640 | samplerate_ = first_segment->samplerate(); | |
641 | if (samplerate_ > 0) | |
642 | samplerate_valid = true; | |
643 | } | |
644 | ||
1ec191ed SA |
645 | if (!samplerate_valid) { |
646 | // Wait until input data is available or an interrupt was requested | |
647 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
648 | decode_input_cond_.wait(input_wait_lock); | |
649 | } | |
a3ebd556 SA |
650 | } while (!samplerate_valid && !decode_interrupt_); |
651 | } | |
652 | ||
47747218 | 653 | void DecodeSignal::decode_data( |
e91883bb | 654 | const int64_t abs_start_samplenum, const int64_t sample_count) |
47747218 | 655 | { |
27a3f09b SA |
656 | const int64_t unit_size = segment_->unit_size(); |
657 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
47747218 SA |
658 | |
659 | for (int64_t i = abs_start_samplenum; | |
660 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
661 | i += chunk_sample_count) { | |
662 | ||
663 | const int64_t chunk_end = min(i + chunk_sample_count, | |
664 | abs_start_samplenum + sample_count); | |
665 | ||
666 | const uint8_t* chunk = segment_->get_samples(i, chunk_end); | |
667 | ||
e91883bb | 668 | if (srd_session_send(srd_session_, i, chunk_end, chunk, |
47747218 SA |
669 | (chunk_end - i) * unit_size, unit_size) != SRD_OK) { |
670 | error_message_ = tr("Decoder reported an error"); | |
671 | delete[] chunk; | |
672 | break; | |
673 | } | |
a3ebd556 | 674 | |
47747218 SA |
675 | delete[] chunk; |
676 | ||
5b6ae103 SA |
677 | // Notify the frontend that we processed some data and |
678 | // possibly have new annotations as well | |
679 | new_annotations(); | |
680 | ||
47747218 SA |
681 | { |
682 | lock_guard<mutex> lock(output_mutex_); | |
683 | samples_decoded_ = chunk_end; | |
684 | } | |
685 | } | |
686 | } | |
687 | ||
688 | void DecodeSignal::decode_proc() | |
689 | { | |
a3ebd556 SA |
690 | query_input_metadata(); |
691 | ||
692 | if (decode_interrupt_) | |
693 | return; | |
694 | ||
e91883bb | 695 | start_srd_session(); |
47747218 | 696 | |
27a3f09b SA |
697 | uint64_t sample_count; |
698 | uint64_t abs_start_samplenum = 0; | |
47747218 | 699 | do { |
27a3f09b SA |
700 | // Keep processing new samples until we exhaust the input data |
701 | do { | |
e91883bb SA |
702 | // Prevent any other decode threads from accessing libsigrokdecode |
703 | lock_guard<mutex> srd_lock(global_srd_mutex_); | |
704 | ||
27a3f09b SA |
705 | { |
706 | lock_guard<mutex> input_lock(input_mutex_); | |
707 | sample_count = segment_->get_sample_count() - abs_start_samplenum; | |
708 | } | |
709 | ||
710 | if (sample_count > 0) { | |
e91883bb | 711 | decode_data(abs_start_samplenum, sample_count); |
27a3f09b SA |
712 | abs_start_samplenum += sample_count; |
713 | } | |
714 | } while (error_message_.isEmpty() && (sample_count > 0)); | |
715 | ||
27a3f09b | 716 | if (error_message_.isEmpty()) { |
a3ebd556 | 717 | // Wait for new input data or an interrupt was requested |
27a3f09b SA |
718 | unique_lock<mutex> input_wait_lock(input_mutex_); |
719 | decode_input_cond_.wait(input_wait_lock); | |
720 | } | |
721 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
e91883bb SA |
722 | } |
723 | ||
724 | void DecodeSignal::start_srd_session() | |
725 | { | |
a3ebd556 SA |
726 | if (srd_session_) |
727 | stop_srd_session(); | |
e91883bb | 728 | |
a3ebd556 SA |
729 | // Create the session |
730 | srd_session_new(&srd_session_); | |
731 | assert(srd_session_); | |
47747218 | 732 | |
a3ebd556 SA |
733 | // Create the decoders |
734 | srd_decoder_inst *prev_di = nullptr; | |
735 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
736 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
e91883bb | 737 | |
a3ebd556 SA |
738 | if (!di) { |
739 | error_message_ = tr("Failed to create decoder instance"); | |
740 | srd_session_destroy(srd_session_); | |
741 | return; | |
742 | } | |
e91883bb | 743 | |
a3ebd556 SA |
744 | if (prev_di) |
745 | srd_inst_stack(srd_session_, prev_di, di); | |
e91883bb | 746 | |
a3ebd556 | 747 | prev_di = di; |
e91883bb | 748 | } |
a3ebd556 SA |
749 | |
750 | // Start the session | |
751 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
752 | g_variant_new_uint64(samplerate_)); | |
753 | ||
754 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
755 | DecodeSignal::annotation_callback, this); | |
756 | ||
757 | srd_session_start(srd_session_); | |
e91883bb | 758 | } |
47747218 | 759 | |
e91883bb SA |
760 | void DecodeSignal::stop_srd_session() |
761 | { | |
762 | if (srd_session_) { | |
763 | // Destroy the session | |
764 | srd_session_destroy(srd_session_); | |
765 | srd_session_ = nullptr; | |
766 | } | |
47747218 SA |
767 | } |
768 | ||
a8a9222d SA |
769 | void DecodeSignal::connect_input_notifiers() |
770 | { | |
771 | // Disconnect the notification slot from the previous set of signals | |
772 | disconnect(this, SLOT(on_data_received())); | |
773 | ||
774 | // Connect the currently used signals to our slot | |
775 | for (data::DecodeChannel &ch : channels_) { | |
776 | if (!ch.assigned_signal) | |
777 | continue; | |
778 | ||
779 | shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
780 | connect(logic_data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)), | |
781 | this, SLOT(on_data_received())); | |
782 | } | |
783 | } | |
784 | ||
47747218 SA |
785 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) |
786 | { | |
787 | assert(pdata); | |
788 | assert(decoder); | |
789 | ||
790 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
791 | assert(ds); | |
792 | ||
793 | lock_guard<mutex> lock(ds->output_mutex_); | |
794 | ||
795 | const decode::Annotation a(pdata); | |
796 | ||
797 | // Find the row | |
798 | assert(pdata->pdo); | |
799 | assert(pdata->pdo->di); | |
800 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
801 | assert(decc); | |
802 | ||
803 | auto row_iter = ds->rows_.end(); | |
804 | ||
805 | // Try looking up the sub-row of this class | |
806 | const auto r = ds->class_rows_.find(make_pair(decc, a.format())); | |
807 | if (r != ds->class_rows_.end()) | |
808 | row_iter = ds->rows_.find((*r).second); | |
809 | else { | |
810 | // Failing that, use the decoder as a key | |
811 | row_iter = ds->rows_.find(Row(decc)); | |
812 | } | |
813 | ||
814 | assert(row_iter != ds->rows_.end()); | |
815 | if (row_iter == ds->rows_.end()) { | |
816 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
817 | ", format = " << a.format(); | |
818 | assert(false); | |
819 | return; | |
820 | } | |
821 | ||
822 | // Add the annotation | |
823 | (*row_iter).second.push_annotation(a); | |
47747218 SA |
824 | } |
825 | ||
826 | void DecodeSignal::on_capture_state_changed(int state) | |
827 | { | |
828 | // If a new acquisition was started, we need to start decoding from scratch | |
829 | if (state == Session::Running) | |
830 | begin_decode(); | |
831 | } | |
832 | ||
833 | void DecodeSignal::on_data_received() | |
834 | { | |
835 | logic_mux_cond_.notify_one(); | |
836 | } | |
837 | ||
ad908057 SA |
838 | } // namespace data |
839 | } // namespace pv |