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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; | |
49 | const int64_t DecodeSignal::DecodeChunkLength = 10 * 1024 * 1024; | |
50 | const unsigned int DecodeSignal::DecodeNotifyPeriod = 1024; | |
ad908057 | 51 | |
47747218 | 52 | mutex DecodeSignal::global_srd_mutex_; |
9f97b357 | 53 | |
ad908057 | 54 | |
47747218 SA |
55 | DecodeSignal::DecodeSignal(pv::Session &session) : |
56 | SignalBase(nullptr, SignalBase::DecodeChannel), | |
57 | session_(session), | |
58 | logic_mux_data_invalid_(false), | |
59 | start_time_(0), | |
60 | samplerate_(0), | |
47747218 SA |
61 | annotation_count_(0), |
62 | samples_decoded_(0), | |
63 | frame_complete_(false) | |
ad908057 | 64 | { |
47747218 SA |
65 | connect(&session_, SIGNAL(capture_state_changed(int)), |
66 | this, SLOT(on_capture_state_changed(int))); | |
67 | connect(&session_, SIGNAL(data_received()), | |
68 | this, SLOT(on_data_received())); | |
69 | connect(&session_, SIGNAL(frame_ended()), | |
70 | this, SLOT(on_frame_ended())); | |
71 | ||
72 | set_name(tr("Empty decoder signal")); | |
ad908057 SA |
73 | } |
74 | ||
47747218 | 75 | DecodeSignal::~DecodeSignal() |
ad908057 | 76 | { |
47747218 SA |
77 | if (decode_thread_.joinable()) { |
78 | decode_interrupt_ = true; | |
79 | decode_input_cond_.notify_one(); | |
80 | decode_thread_.join(); | |
81 | } | |
ad908057 | 82 | |
47747218 SA |
83 | if (logic_mux_thread_.joinable()) { |
84 | logic_mux_interrupt_ = true; | |
85 | logic_mux_cond_.notify_one(); | |
86 | logic_mux_thread_.join(); | |
87 | } | |
ad908057 SA |
88 | } |
89 | ||
47747218 | 90 | const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const |
ecd07c20 | 91 | { |
47747218 | 92 | return stack_; |
ecd07c20 SA |
93 | } |
94 | ||
ad908057 SA |
95 | void DecodeSignal::stack_decoder(srd_decoder *decoder) |
96 | { | |
97 | assert(decoder); | |
47747218 SA |
98 | stack_.push_back(make_shared<decode::Decoder>(decoder)); |
99 | ||
100 | // Set name if this decoder is the first in the list | |
101 | if (stack_.size() == 1) | |
102 | set_name(QString::fromUtf8(decoder->name)); | |
132a5c6d | 103 | |
27a3f09b | 104 | // Include the newly created decode channels in the channel lists |
9f97b357 | 105 | update_channel_list(); |
132a5c6d SA |
106 | |
107 | auto_assign_signals(); | |
27a3f09b | 108 | commit_decoder_channels(); |
47747218 | 109 | begin_decode(); |
ad908057 SA |
110 | } |
111 | ||
112 | void DecodeSignal::remove_decoder(int index) | |
113 | { | |
47747218 SA |
114 | assert(index >= 0); |
115 | assert(index < (int)stack_.size()); | |
116 | ||
117 | // Find the decoder in the stack | |
118 | auto iter = stack_.begin(); | |
119 | for (int i = 0; i < index; i++, iter++) | |
120 | assert(iter != stack_.end()); | |
121 | ||
122 | // Delete the element | |
123 | stack_.erase(iter); | |
124 | ||
125 | // Update channels and decoded data | |
9f97b357 | 126 | update_channel_list(); |
47747218 | 127 | begin_decode(); |
ad908057 SA |
128 | } |
129 | ||
130 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
131 | { | |
47747218 | 132 | auto iter = stack_.cbegin(); |
ad908057 | 133 | for (int i = 0; i < index; i++, iter++) |
47747218 | 134 | assert(iter != stack_.end()); |
ad908057 SA |
135 | |
136 | shared_ptr<Decoder> dec = *iter; | |
137 | ||
138 | // Toggle decoder visibility | |
139 | bool state = false; | |
140 | if (dec) { | |
141 | state = !dec->shown(); | |
142 | dec->show(state); | |
143 | } | |
144 | ||
145 | return state; | |
146 | } | |
147 | ||
47747218 SA |
148 | void DecodeSignal::reset_decode() |
149 | { | |
47747218 SA |
150 | annotation_count_ = 0; |
151 | frame_complete_ = false; | |
152 | samples_decoded_ = 0; | |
153 | error_message_ = QString(); | |
154 | rows_.clear(); | |
155 | class_rows_.clear(); | |
156 | } | |
157 | ||
946b52e1 SA |
158 | void DecodeSignal::begin_decode() |
159 | { | |
47747218 SA |
160 | if (decode_thread_.joinable()) { |
161 | decode_interrupt_ = true; | |
162 | decode_input_cond_.notify_one(); | |
163 | decode_thread_.join(); | |
164 | } | |
165 | ||
166 | if (logic_mux_thread_.joinable()) { | |
167 | logic_mux_interrupt_ = true; | |
168 | logic_mux_cond_.notify_one(); | |
169 | logic_mux_thread_.join(); | |
170 | } | |
171 | ||
172 | reset_decode(); | |
173 | ||
27a3f09b SA |
174 | if (stack_.size() == 0) { |
175 | error_message_ = tr("No decoders"); | |
176 | return; | |
177 | } | |
178 | ||
179 | assert(channels_.size() > 0); | |
180 | ||
181 | if (get_assigned_signal_count() == 0) { | |
182 | error_message_ = tr("There are no channels assigned to this decoder"); | |
183 | return; | |
184 | } | |
185 | ||
47747218 SA |
186 | // Check that all decoders have the required channels |
187 | for (const shared_ptr<decode::Decoder> &dec : stack_) | |
188 | if (!dec->have_required_channels()) { | |
189 | error_message_ = tr("One or more required channels " | |
190 | "have not been specified"); | |
191 | return; | |
192 | } | |
193 | ||
194 | // Add annotation classes | |
195 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
196 | assert(dec); | |
197 | const srd_decoder *const decc = dec->decoder(); | |
198 | assert(dec->decoder()); | |
199 | ||
200 | // Add a row for the decoder if it doesn't have a row list | |
201 | if (!decc->annotation_rows) | |
202 | rows_[Row(decc)] = decode::RowData(); | |
203 | ||
204 | // Add the decoder rows | |
205 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
206 | const srd_decoder_annotation_row *const ann_row = | |
207 | (srd_decoder_annotation_row *)l->data; | |
208 | assert(ann_row); | |
209 | ||
210 | const Row row(decc, ann_row); | |
211 | ||
212 | // Add a new empty row data object | |
213 | rows_[row] = decode::RowData(); | |
214 | ||
215 | // Map out all the classes | |
216 | for (const GSList *ll = ann_row->ann_classes; | |
217 | ll; ll = ll->next) | |
218 | class_rows_[make_pair(decc, | |
219 | GPOINTER_TO_INT(ll->data))] = row; | |
220 | } | |
221 | } | |
222 | ||
27a3f09b SA |
223 | // TODO Currently we assume all channels have the same sample rate |
224 | auto any_channel = find_if(channels_.begin(), channels_.end(), | |
225 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
226 | shared_ptr<LogicSegment> first_segment = | |
227 | any_channel->assigned_signal->logic_data()->logic_segments().front(); | |
228 | samplerate_ = first_segment->samplerate(); | |
229 | ||
230 | // Free the logic data and its segment(s) if it needs to be updated | |
231 | if (logic_mux_data_invalid_) | |
232 | logic_mux_data_.reset(); | |
233 | ||
234 | if (!logic_mux_data_) { | |
235 | const int64_t ch_count = get_assigned_signal_count(); | |
236 | const int64_t unit_size = (ch_count + 7) / 8; | |
237 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
238 | segment_ = make_shared<LogicSegment>(*logic_mux_data_, unit_size, samplerate_); | |
239 | logic_mux_data_->push_segment(segment_); | |
240 | } | |
47747218 SA |
241 | |
242 | // Update the samplerate and start time | |
243 | start_time_ = segment_->start_time(); | |
244 | samplerate_ = segment_->samplerate(); | |
245 | if (samplerate_ == 0.0) | |
246 | samplerate_ = 1.0; | |
247 | ||
27a3f09b SA |
248 | // Make sure the logic output data is complete and up-to-date |
249 | logic_mux_interrupt_ = false; | |
250 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
251 | ||
252 | // Decode the muxed logic data | |
47747218 SA |
253 | decode_interrupt_ = false; |
254 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
946b52e1 SA |
255 | } |
256 | ||
ecd07c20 SA |
257 | QString DecodeSignal::error_message() const |
258 | { | |
47747218 SA |
259 | lock_guard<mutex> lock(output_mutex_); |
260 | return error_message_; | |
ecd07c20 SA |
261 | } |
262 | ||
47747218 | 263 | const vector<data::DecodeChannel> DecodeSignal::get_channels() const |
9f97b357 SA |
264 | { |
265 | return channels_; | |
266 | } | |
267 | ||
132a5c6d SA |
268 | void DecodeSignal::auto_assign_signals() |
269 | { | |
47747218 SA |
270 | bool new_assignment = false; |
271 | ||
132a5c6d SA |
272 | // Try to auto-select channels that don't have signals assigned yet |
273 | for (data::DecodeChannel &ch : channels_) { | |
274 | if (ch.assigned_signal) | |
275 | continue; | |
276 | ||
47747218 SA |
277 | for (shared_ptr<data::SignalBase> s : session_.signalbases()) |
278 | if (s->logic_data() && (ch.name.toLower().contains(s->name().toLower()))) { | |
132a5c6d | 279 | ch.assigned_signal = s.get(); |
47747218 SA |
280 | new_assignment = true; |
281 | } | |
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 | ||
422 | uint64_t DecodeSignal::inc_annotation_count() | |
423 | { | |
424 | return (annotation_count_++); | |
ecd07c20 SA |
425 | } |
426 | ||
9f97b357 SA |
427 | void DecodeSignal::update_channel_list() |
428 | { | |
47747218 | 429 | vector<data::DecodeChannel> prev_channels = channels_; |
9f97b357 SA |
430 | channels_.clear(); |
431 | ||
432 | uint16_t id = 0; | |
433 | ||
434 | // Copy existing entries, create new as needed | |
47747218 | 435 | for (shared_ptr<Decoder> decoder : stack_) { |
9f97b357 SA |
436 | const srd_decoder* srd_d = decoder->decoder(); |
437 | const GSList *l; | |
438 | ||
439 | // Mandatory channels | |
440 | for (l = srd_d->channels; l; l = l->next) { | |
441 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
442 | bool ch_added = false; | |
443 | ||
444 | // Copy but update ID if this channel was in the list before | |
47747218 | 445 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
446 | if (ch.pdch_ == pdch) { |
447 | ch.id = id++; | |
448 | channels_.push_back(ch); | |
449 | ch_added = true; | |
450 | break; | |
451 | } | |
452 | ||
453 | if (!ch_added) { | |
454 | // Create new entry without a mapped signal | |
455 | data::DecodeChannel ch = {id++, false, nullptr, | |
456 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
457 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
458 | channels_.push_back(ch); | |
459 | } | |
460 | } | |
461 | ||
462 | // Optional channels | |
463 | for (l = srd_d->opt_channels; l; l = l->next) { | |
464 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
465 | bool ch_added = false; | |
466 | ||
467 | // Copy but update ID if this channel was in the list before | |
47747218 | 468 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
469 | if (ch.pdch_ == pdch) { |
470 | ch.id = id++; | |
471 | channels_.push_back(ch); | |
472 | ch_added = true; | |
473 | break; | |
474 | } | |
475 | ||
476 | if (!ch_added) { | |
477 | // Create new entry without a mapped signal | |
478 | data::DecodeChannel ch = {id++, true, nullptr, | |
479 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
480 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
481 | channels_.push_back(ch); | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
47747218 SA |
486 | // Invalidate the logic output data if the channel assignment changed |
487 | if (prev_channels.size() != channels_.size()) { | |
488 | // The number of channels changed, there's definitely a difference | |
489 | logic_mux_data_invalid_ = true; | |
490 | } else { | |
491 | // Same number but assignment may still differ, so compare all channels | |
492 | for (size_t i = 0; i < channels_.size(); i++) { | |
493 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
494 | const data::DecodeChannel &ch = channels_[i]; | |
495 | ||
496 | if ((p_ch.pdch_ != ch.pdch_) || | |
497 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
498 | logic_mux_data_invalid_ = true; | |
499 | break; | |
500 | } | |
501 | } | |
502 | ||
503 | } | |
504 | ||
9f97b357 SA |
505 | channels_updated(); |
506 | } | |
507 | ||
27a3f09b | 508 | void DecodeSignal::commit_decoder_channels() |
ad908057 | 509 | { |
27a3f09b SA |
510 | // Submit channel list to every decoder, containing only the relevant channels |
511 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
512 | vector<data::DecodeChannel*> channel_list; | |
513 | ||
514 | for (data::DecodeChannel &ch : channels_) | |
515 | if (ch.decoder_ == dec) | |
516 | channel_list.push_back(&ch); | |
47747218 | 517 | |
27a3f09b SA |
518 | dec->set_channels(channel_list); |
519 | } | |
47747218 SA |
520 | } |
521 | ||
27a3f09b | 522 | void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end) |
47747218 | 523 | { |
27a3f09b SA |
524 | // Enforce end to be greater than start |
525 | if (end <= start) | |
526 | return; | |
527 | ||
528 | // Fetch all segments and their data | |
529 | // TODO Currently, we assume only a single segment exists | |
530 | vector<shared_ptr<LogicSegment> > segments; | |
531 | vector<const uint8_t*> signal_data; | |
532 | vector<uint8_t> signal_in_bytepos; | |
533 | vector<uint8_t> signal_in_bitpos; | |
534 | ||
535 | for (data::DecodeChannel &ch : channels_) | |
536 | if (ch.assigned_signal) { | |
537 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
538 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
539 | segments.push_back(segment); | |
540 | signal_data.push_back(segment->get_samples(start, end)); | |
541 | ||
542 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
543 | signal_in_bytepos.push_back(bitpos / 8); | |
544 | signal_in_bitpos.push_back(bitpos % 8); | |
545 | } | |
546 | ||
547 | // Perform the muxing of signal data into the output data | |
548 | uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()]; | |
549 | unsigned int signal_count = signal_data.size(); | |
550 | ||
551 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
552 | int bitpos = 0; | |
553 | uint8_t bytepos = 0; | |
554 | ||
555 | const int out_sample_pos = sample_cnt * segment_->unit_size(); | |
556 | for (unsigned int i = 0; i < segment_->unit_size(); i++) | |
557 | output[out_sample_pos + i] = 0; | |
47747218 | 558 | |
27a3f09b SA |
559 | for (unsigned int i = 0; i < signal_count; i++) { |
560 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
561 | const uint8_t in_sample = 1 & | |
562 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
47747218 | 563 | |
27a3f09b SA |
564 | const uint8_t out_sample = output[out_sample_pos + bytepos]; |
565 | ||
566 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
567 | ||
568 | bitpos++; | |
569 | if (bitpos > 7) { | |
570 | bitpos = 0; | |
571 | bytepos++; | |
572 | } | |
573 | } | |
47747218 SA |
574 | } |
575 | ||
27a3f09b SA |
576 | segment_->append_payload(output, (end - start) * segment_->unit_size()); |
577 | delete[] output; | |
578 | ||
579 | for (const uint8_t* data : signal_data) | |
580 | delete[] data; | |
581 | } | |
582 | ||
583 | void DecodeSignal::logic_mux_proc() | |
584 | { | |
585 | do { | |
586 | ||
587 | const uint64_t input_sample_count = get_working_sample_count(); | |
588 | const uint64_t output_sample_count = segment_->get_sample_count(); | |
589 | ||
590 | const uint64_t samples_to_process = | |
591 | (input_sample_count > output_sample_count) ? | |
592 | (input_sample_count - output_sample_count) : 0; | |
593 | ||
594 | // Process the samples if necessary... | |
595 | if (samples_to_process > 0) { | |
596 | const uint64_t unit_size = segment_->unit_size(); | |
597 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
598 | ||
599 | uint64_t processed_samples = 0; | |
600 | do { | |
601 | const uint64_t start_sample = output_sample_count + processed_samples; | |
602 | const uint64_t sample_count = | |
603 | min(samples_to_process - processed_samples, chunk_sample_count); | |
604 | ||
605 | mux_logic_samples(start_sample, start_sample + sample_count); | |
606 | processed_samples += sample_count; | |
607 | ||
608 | // ...and process the newly muxed logic data | |
609 | decode_input_cond_.notify_one(); | |
610 | } while (processed_samples < samples_to_process); | |
611 | } | |
612 | ||
613 | if (session_.get_capture_state() != Session::Stopped) { | |
614 | // Wait for more input | |
615 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
616 | logic_mux_cond_.wait(logic_mux_lock); | |
617 | } | |
618 | } while ((session_.get_capture_state() != Session::Stopped) && !logic_mux_interrupt_); | |
619 | ||
620 | // No more input data and session is stopped, let the decode thread | |
621 | // process any pending data, terminate and release the global SRD mutex | |
622 | // in order to let other decoders run | |
623 | decode_input_cond_.notify_one(); | |
47747218 SA |
624 | } |
625 | ||
626 | void DecodeSignal::decode_data( | |
627 | const int64_t abs_start_samplenum, const int64_t sample_count, | |
628 | srd_session *const session) | |
629 | { | |
27a3f09b SA |
630 | const int64_t unit_size = segment_->unit_size(); |
631 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
47747218 SA |
632 | |
633 | for (int64_t i = abs_start_samplenum; | |
634 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
635 | i += chunk_sample_count) { | |
636 | ||
637 | const int64_t chunk_end = min(i + chunk_sample_count, | |
638 | abs_start_samplenum + sample_count); | |
639 | ||
640 | const uint8_t* chunk = segment_->get_samples(i, chunk_end); | |
641 | ||
642 | if (srd_session_send(session, i, chunk_end, chunk, | |
643 | (chunk_end - i) * unit_size, unit_size) != SRD_OK) { | |
644 | error_message_ = tr("Decoder reported an error"); | |
645 | delete[] chunk; | |
646 | break; | |
647 | } | |
648 | delete[] chunk; | |
649 | ||
650 | { | |
651 | lock_guard<mutex> lock(output_mutex_); | |
652 | samples_decoded_ = chunk_end; | |
653 | } | |
654 | } | |
655 | } | |
656 | ||
657 | void DecodeSignal::decode_proc() | |
658 | { | |
47747218 SA |
659 | srd_session *session; |
660 | srd_decoder_inst *prev_di = nullptr; | |
661 | ||
662 | // Prevent any other decode threads from accessing libsigrokdecode | |
663 | lock_guard<mutex> srd_lock(global_srd_mutex_); | |
664 | ||
665 | // Create the session | |
666 | srd_session_new(&session); | |
667 | assert(session); | |
668 | ||
669 | // Create the decoders | |
670 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
671 | srd_decoder_inst *const di = dec->create_decoder_inst(session); | |
672 | ||
673 | if (!di) { | |
674 | error_message_ = tr("Failed to create decoder instance"); | |
675 | srd_session_destroy(session); | |
676 | return; | |
677 | } | |
678 | ||
679 | if (prev_di) | |
680 | srd_inst_stack(session, prev_di, di); | |
681 | ||
682 | prev_di = di; | |
683 | } | |
684 | ||
47747218 SA |
685 | // Start the session |
686 | srd_session_metadata_set(session, SRD_CONF_SAMPLERATE, | |
687 | g_variant_new_uint64(samplerate_)); | |
688 | ||
689 | srd_pd_output_callback_add(session, SRD_OUTPUT_ANN, | |
690 | DecodeSignal::annotation_callback, this); | |
691 | ||
692 | srd_session_start(session); | |
693 | ||
27a3f09b SA |
694 | uint64_t sample_count; |
695 | uint64_t abs_start_samplenum = 0; | |
47747218 | 696 | do { |
27a3f09b SA |
697 | // Keep processing new samples until we exhaust the input data |
698 | do { | |
699 | { | |
700 | lock_guard<mutex> input_lock(input_mutex_); | |
701 | sample_count = segment_->get_sample_count() - abs_start_samplenum; | |
702 | } | |
703 | ||
704 | if (sample_count > 0) { | |
705 | decode_data(abs_start_samplenum, sample_count, session); | |
706 | abs_start_samplenum += sample_count; | |
707 | } | |
708 | } while (error_message_.isEmpty() && (sample_count > 0)); | |
709 | ||
710 | // Terminate if we exhausted the input data | |
711 | if ((int64_t)segment_->get_sample_count() == get_working_sample_count()) | |
712 | break; | |
713 | ||
714 | if (error_message_.isEmpty()) { | |
715 | // Wait for new input data or an interrupt request | |
716 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
717 | decode_input_cond_.wait(input_wait_lock); | |
718 | } | |
719 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
47747218 SA |
720 | |
721 | // Make sure all annotations are known to the frontend | |
ad908057 | 722 | new_annotations(); |
47747218 SA |
723 | |
724 | // Destroy the session | |
725 | srd_session_destroy(session); | |
726 | } | |
727 | ||
728 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) | |
729 | { | |
730 | assert(pdata); | |
731 | assert(decoder); | |
732 | ||
733 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
734 | assert(ds); | |
735 | ||
736 | lock_guard<mutex> lock(ds->output_mutex_); | |
737 | ||
738 | const decode::Annotation a(pdata); | |
739 | ||
740 | // Find the row | |
741 | assert(pdata->pdo); | |
742 | assert(pdata->pdo->di); | |
743 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
744 | assert(decc); | |
745 | ||
746 | auto row_iter = ds->rows_.end(); | |
747 | ||
748 | // Try looking up the sub-row of this class | |
749 | const auto r = ds->class_rows_.find(make_pair(decc, a.format())); | |
750 | if (r != ds->class_rows_.end()) | |
751 | row_iter = ds->rows_.find((*r).second); | |
752 | else { | |
753 | // Failing that, use the decoder as a key | |
754 | row_iter = ds->rows_.find(Row(decc)); | |
755 | } | |
756 | ||
757 | assert(row_iter != ds->rows_.end()); | |
758 | if (row_iter == ds->rows_.end()) { | |
759 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
760 | ", format = " << a.format(); | |
761 | assert(false); | |
762 | return; | |
763 | } | |
764 | ||
765 | // Add the annotation | |
766 | (*row_iter).second.push_annotation(a); | |
767 | ||
768 | // Notify the frontend every DecodeNotifyPeriod annotations | |
769 | if (ds->inc_annotation_count() % DecodeNotifyPeriod == 0) | |
770 | ds->new_annotations(); | |
771 | } | |
772 | ||
773 | void DecodeSignal::on_capture_state_changed(int state) | |
774 | { | |
775 | // If a new acquisition was started, we need to start decoding from scratch | |
776 | if (state == Session::Running) | |
777 | begin_decode(); | |
778 | } | |
779 | ||
780 | void DecodeSignal::on_data_received() | |
781 | { | |
782 | logic_mux_cond_.notify_one(); | |
783 | } | |
784 | ||
785 | void DecodeSignal::on_frame_ended() | |
786 | { | |
787 | logic_mux_cond_.notify_one(); | |
ad908057 SA |
788 | } |
789 | ||
790 | } // namespace data | |
791 | } // namespace pv |