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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), | |
e91883bb | 58 | srd_session_(nullptr), |
47747218 SA |
59 | logic_mux_data_invalid_(false), |
60 | start_time_(0), | |
61 | samplerate_(0), | |
47747218 SA |
62 | annotation_count_(0), |
63 | samples_decoded_(0), | |
64 | frame_complete_(false) | |
ad908057 | 65 | { |
47747218 SA |
66 | connect(&session_, SIGNAL(capture_state_changed(int)), |
67 | this, SLOT(on_capture_state_changed(int))); | |
47747218 SA |
68 | |
69 | set_name(tr("Empty decoder signal")); | |
ad908057 SA |
70 | } |
71 | ||
47747218 | 72 | DecodeSignal::~DecodeSignal() |
ad908057 | 73 | { |
47747218 SA |
74 | if (decode_thread_.joinable()) { |
75 | decode_interrupt_ = true; | |
76 | decode_input_cond_.notify_one(); | |
77 | decode_thread_.join(); | |
78 | } | |
ad908057 | 79 | |
47747218 SA |
80 | if (logic_mux_thread_.joinable()) { |
81 | logic_mux_interrupt_ = true; | |
82 | logic_mux_cond_.notify_one(); | |
83 | logic_mux_thread_.join(); | |
84 | } | |
e91883bb SA |
85 | |
86 | stop_srd_session(); | |
ad908057 SA |
87 | } |
88 | ||
47747218 | 89 | const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const |
ecd07c20 | 90 | { |
47747218 | 91 | return stack_; |
ecd07c20 SA |
92 | } |
93 | ||
ad908057 SA |
94 | void DecodeSignal::stack_decoder(srd_decoder *decoder) |
95 | { | |
96 | assert(decoder); | |
47747218 SA |
97 | stack_.push_back(make_shared<decode::Decoder>(decoder)); |
98 | ||
99 | // Set name if this decoder is the first in the list | |
100 | if (stack_.size() == 1) | |
101 | set_name(QString::fromUtf8(decoder->name)); | |
132a5c6d | 102 | |
27a3f09b | 103 | // Include the newly created decode channels in the channel lists |
9f97b357 | 104 | update_channel_list(); |
132a5c6d SA |
105 | |
106 | auto_assign_signals(); | |
27a3f09b | 107 | commit_decoder_channels(); |
47747218 | 108 | begin_decode(); |
ad908057 SA |
109 | } |
110 | ||
111 | void DecodeSignal::remove_decoder(int index) | |
112 | { | |
47747218 SA |
113 | assert(index >= 0); |
114 | assert(index < (int)stack_.size()); | |
115 | ||
116 | // Find the decoder in the stack | |
117 | auto iter = stack_.begin(); | |
118 | for (int i = 0; i < index; i++, iter++) | |
119 | assert(iter != stack_.end()); | |
120 | ||
121 | // Delete the element | |
122 | stack_.erase(iter); | |
123 | ||
124 | // Update channels and decoded data | |
9f97b357 | 125 | update_channel_list(); |
47747218 | 126 | begin_decode(); |
ad908057 SA |
127 | } |
128 | ||
129 | bool DecodeSignal::toggle_decoder_visibility(int index) | |
130 | { | |
47747218 | 131 | auto iter = stack_.cbegin(); |
ad908057 | 132 | for (int i = 0; i < index; i++, iter++) |
47747218 | 133 | assert(iter != stack_.end()); |
ad908057 SA |
134 | |
135 | shared_ptr<Decoder> dec = *iter; | |
136 | ||
137 | // Toggle decoder visibility | |
138 | bool state = false; | |
139 | if (dec) { | |
140 | state = !dec->shown(); | |
141 | dec->show(state); | |
142 | } | |
143 | ||
144 | return state; | |
145 | } | |
146 | ||
47747218 SA |
147 | void DecodeSignal::reset_decode() |
148 | { | |
e91883bb SA |
149 | stop_srd_session(); |
150 | ||
47747218 SA |
151 | annotation_count_ = 0; |
152 | frame_complete_ = false; | |
153 | samples_decoded_ = 0; | |
154 | error_message_ = QString(); | |
155 | rows_.clear(); | |
156 | class_rows_.clear(); | |
157 | } | |
158 | ||
946b52e1 SA |
159 | void DecodeSignal::begin_decode() |
160 | { | |
47747218 SA |
161 | if (decode_thread_.joinable()) { |
162 | decode_interrupt_ = true; | |
163 | decode_input_cond_.notify_one(); | |
164 | decode_thread_.join(); | |
165 | } | |
166 | ||
167 | if (logic_mux_thread_.joinable()) { | |
168 | logic_mux_interrupt_ = true; | |
169 | logic_mux_cond_.notify_one(); | |
170 | logic_mux_thread_.join(); | |
171 | } | |
172 | ||
173 | reset_decode(); | |
174 | ||
27a3f09b SA |
175 | if (stack_.size() == 0) { |
176 | error_message_ = tr("No decoders"); | |
177 | return; | |
178 | } | |
179 | ||
180 | assert(channels_.size() > 0); | |
181 | ||
182 | if (get_assigned_signal_count() == 0) { | |
183 | error_message_ = tr("There are no channels assigned to this decoder"); | |
184 | return; | |
185 | } | |
186 | ||
47747218 SA |
187 | // Check that all decoders have the required channels |
188 | for (const shared_ptr<decode::Decoder> &dec : stack_) | |
189 | if (!dec->have_required_channels()) { | |
190 | error_message_ = tr("One or more required channels " | |
191 | "have not been specified"); | |
192 | return; | |
193 | } | |
194 | ||
195 | // Add annotation classes | |
196 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
197 | assert(dec); | |
198 | const srd_decoder *const decc = dec->decoder(); | |
199 | assert(dec->decoder()); | |
200 | ||
201 | // Add a row for the decoder if it doesn't have a row list | |
202 | if (!decc->annotation_rows) | |
203 | rows_[Row(decc)] = decode::RowData(); | |
204 | ||
205 | // Add the decoder rows | |
206 | for (const GSList *l = decc->annotation_rows; l; l = l->next) { | |
207 | const srd_decoder_annotation_row *const ann_row = | |
208 | (srd_decoder_annotation_row *)l->data; | |
209 | assert(ann_row); | |
210 | ||
211 | const Row row(decc, ann_row); | |
212 | ||
213 | // Add a new empty row data object | |
214 | rows_[row] = decode::RowData(); | |
215 | ||
216 | // Map out all the classes | |
217 | for (const GSList *ll = ann_row->ann_classes; | |
218 | ll; ll = ll->next) | |
219 | class_rows_[make_pair(decc, | |
220 | GPOINTER_TO_INT(ll->data))] = row; | |
221 | } | |
222 | } | |
223 | ||
27a3f09b SA |
224 | // TODO Currently we assume all channels have the same sample rate |
225 | auto any_channel = find_if(channels_.begin(), channels_.end(), | |
226 | [](data::DecodeChannel ch) { return ch.assigned_signal; }); | |
227 | shared_ptr<LogicSegment> first_segment = | |
228 | any_channel->assigned_signal->logic_data()->logic_segments().front(); | |
229 | samplerate_ = first_segment->samplerate(); | |
230 | ||
231 | // Free the logic data and its segment(s) if it needs to be updated | |
232 | if (logic_mux_data_invalid_) | |
233 | logic_mux_data_.reset(); | |
234 | ||
235 | if (!logic_mux_data_) { | |
236 | const int64_t ch_count = get_assigned_signal_count(); | |
237 | const int64_t unit_size = (ch_count + 7) / 8; | |
238 | logic_mux_data_ = make_shared<Logic>(ch_count); | |
239 | segment_ = make_shared<LogicSegment>(*logic_mux_data_, unit_size, samplerate_); | |
240 | logic_mux_data_->push_segment(segment_); | |
241 | } | |
47747218 SA |
242 | |
243 | // Update the samplerate and start time | |
244 | start_time_ = segment_->start_time(); | |
245 | samplerate_ = segment_->samplerate(); | |
246 | if (samplerate_ == 0.0) | |
247 | samplerate_ = 1.0; | |
248 | ||
27a3f09b SA |
249 | // Make sure the logic output data is complete and up-to-date |
250 | logic_mux_interrupt_ = false; | |
251 | logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this); | |
252 | ||
253 | // Decode the muxed logic data | |
47747218 SA |
254 | decode_interrupt_ = false; |
255 | decode_thread_ = std::thread(&DecodeSignal::decode_proc, this); | |
a8a9222d SA |
256 | |
257 | // Receive notifications when new sample data is available | |
258 | connect_input_notifiers(); | |
946b52e1 SA |
259 | } |
260 | ||
ecd07c20 SA |
261 | QString DecodeSignal::error_message() const |
262 | { | |
47747218 SA |
263 | lock_guard<mutex> lock(output_mutex_); |
264 | return error_message_; | |
ecd07c20 SA |
265 | } |
266 | ||
47747218 | 267 | const vector<data::DecodeChannel> DecodeSignal::get_channels() const |
9f97b357 SA |
268 | { |
269 | return channels_; | |
270 | } | |
271 | ||
132a5c6d SA |
272 | void DecodeSignal::auto_assign_signals() |
273 | { | |
47747218 SA |
274 | bool new_assignment = false; |
275 | ||
132a5c6d SA |
276 | // Try to auto-select channels that don't have signals assigned yet |
277 | for (data::DecodeChannel &ch : channels_) { | |
278 | if (ch.assigned_signal) | |
279 | continue; | |
280 | ||
47747218 SA |
281 | for (shared_ptr<data::SignalBase> s : session_.signalbases()) |
282 | if (s->logic_data() && (ch.name.toLower().contains(s->name().toLower()))) { | |
132a5c6d | 283 | ch.assigned_signal = s.get(); |
47747218 SA |
284 | new_assignment = true; |
285 | } | |
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 | ||
426 | uint64_t DecodeSignal::inc_annotation_count() | |
427 | { | |
428 | return (annotation_count_++); | |
ecd07c20 SA |
429 | } |
430 | ||
9f97b357 SA |
431 | void DecodeSignal::update_channel_list() |
432 | { | |
47747218 | 433 | vector<data::DecodeChannel> prev_channels = channels_; |
9f97b357 SA |
434 | channels_.clear(); |
435 | ||
436 | uint16_t id = 0; | |
437 | ||
438 | // Copy existing entries, create new as needed | |
47747218 | 439 | for (shared_ptr<Decoder> decoder : stack_) { |
9f97b357 SA |
440 | const srd_decoder* srd_d = decoder->decoder(); |
441 | const GSList *l; | |
442 | ||
443 | // Mandatory channels | |
444 | for (l = srd_d->channels; l; l = l->next) { | |
445 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
446 | bool ch_added = false; | |
447 | ||
448 | // Copy but update ID if this channel was in the list before | |
47747218 | 449 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
450 | if (ch.pdch_ == pdch) { |
451 | ch.id = id++; | |
452 | channels_.push_back(ch); | |
453 | ch_added = true; | |
454 | break; | |
455 | } | |
456 | ||
457 | if (!ch_added) { | |
458 | // Create new entry without a mapped signal | |
459 | data::DecodeChannel ch = {id++, false, nullptr, | |
460 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
461 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
462 | channels_.push_back(ch); | |
463 | } | |
464 | } | |
465 | ||
466 | // Optional channels | |
467 | for (l = srd_d->opt_channels; l; l = l->next) { | |
468 | const struct srd_channel *const pdch = (struct srd_channel *)l->data; | |
469 | bool ch_added = false; | |
470 | ||
471 | // Copy but update ID if this channel was in the list before | |
47747218 | 472 | for (data::DecodeChannel &ch : prev_channels) |
9f97b357 SA |
473 | if (ch.pdch_ == pdch) { |
474 | ch.id = id++; | |
475 | channels_.push_back(ch); | |
476 | ch_added = true; | |
477 | break; | |
478 | } | |
479 | ||
480 | if (!ch_added) { | |
481 | // Create new entry without a mapped signal | |
482 | data::DecodeChannel ch = {id++, true, nullptr, | |
483 | QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc), | |
484 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch}; | |
485 | channels_.push_back(ch); | |
486 | } | |
487 | } | |
488 | } | |
489 | ||
47747218 SA |
490 | // Invalidate the logic output data if the channel assignment changed |
491 | if (prev_channels.size() != channels_.size()) { | |
492 | // The number of channels changed, there's definitely a difference | |
493 | logic_mux_data_invalid_ = true; | |
494 | } else { | |
495 | // Same number but assignment may still differ, so compare all channels | |
496 | for (size_t i = 0; i < channels_.size(); i++) { | |
497 | const data::DecodeChannel &p_ch = prev_channels[i]; | |
498 | const data::DecodeChannel &ch = channels_[i]; | |
499 | ||
500 | if ((p_ch.pdch_ != ch.pdch_) || | |
501 | (p_ch.assigned_signal != ch.assigned_signal)) { | |
502 | logic_mux_data_invalid_ = true; | |
503 | break; | |
504 | } | |
505 | } | |
506 | ||
507 | } | |
508 | ||
9f97b357 SA |
509 | channels_updated(); |
510 | } | |
511 | ||
27a3f09b | 512 | void DecodeSignal::commit_decoder_channels() |
ad908057 | 513 | { |
27a3f09b SA |
514 | // Submit channel list to every decoder, containing only the relevant channels |
515 | for (shared_ptr<decode::Decoder> dec : stack_) { | |
516 | vector<data::DecodeChannel*> channel_list; | |
517 | ||
518 | for (data::DecodeChannel &ch : channels_) | |
519 | if (ch.decoder_ == dec) | |
520 | channel_list.push_back(&ch); | |
47747218 | 521 | |
27a3f09b SA |
522 | dec->set_channels(channel_list); |
523 | } | |
47747218 SA |
524 | } |
525 | ||
27a3f09b | 526 | void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end) |
47747218 | 527 | { |
27a3f09b SA |
528 | // Enforce end to be greater than start |
529 | if (end <= start) | |
530 | return; | |
531 | ||
532 | // Fetch all segments and their data | |
533 | // TODO Currently, we assume only a single segment exists | |
534 | vector<shared_ptr<LogicSegment> > segments; | |
535 | vector<const uint8_t*> signal_data; | |
536 | vector<uint8_t> signal_in_bytepos; | |
537 | vector<uint8_t> signal_in_bitpos; | |
538 | ||
539 | for (data::DecodeChannel &ch : channels_) | |
540 | if (ch.assigned_signal) { | |
541 | const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
542 | const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front(); | |
543 | segments.push_back(segment); | |
544 | signal_data.push_back(segment->get_samples(start, end)); | |
545 | ||
546 | const int bitpos = ch.assigned_signal->logic_bit_index(); | |
547 | signal_in_bytepos.push_back(bitpos / 8); | |
548 | signal_in_bitpos.push_back(bitpos % 8); | |
549 | } | |
550 | ||
551 | // Perform the muxing of signal data into the output data | |
552 | uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()]; | |
553 | unsigned int signal_count = signal_data.size(); | |
554 | ||
555 | for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) { | |
556 | int bitpos = 0; | |
557 | uint8_t bytepos = 0; | |
558 | ||
559 | const int out_sample_pos = sample_cnt * segment_->unit_size(); | |
560 | for (unsigned int i = 0; i < segment_->unit_size(); i++) | |
561 | output[out_sample_pos + i] = 0; | |
47747218 | 562 | |
27a3f09b SA |
563 | for (unsigned int i = 0; i < signal_count; i++) { |
564 | const int in_sample_pos = sample_cnt * segments[i]->unit_size(); | |
565 | const uint8_t in_sample = 1 & | |
566 | ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i])); | |
47747218 | 567 | |
27a3f09b SA |
568 | const uint8_t out_sample = output[out_sample_pos + bytepos]; |
569 | ||
570 | output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos); | |
571 | ||
572 | bitpos++; | |
573 | if (bitpos > 7) { | |
574 | bitpos = 0; | |
575 | bytepos++; | |
576 | } | |
577 | } | |
47747218 SA |
578 | } |
579 | ||
27a3f09b SA |
580 | segment_->append_payload(output, (end - start) * segment_->unit_size()); |
581 | delete[] output; | |
582 | ||
583 | for (const uint8_t* data : signal_data) | |
584 | delete[] data; | |
585 | } | |
586 | ||
587 | void DecodeSignal::logic_mux_proc() | |
588 | { | |
589 | do { | |
27a3f09b SA |
590 | const uint64_t input_sample_count = get_working_sample_count(); |
591 | const uint64_t output_sample_count = segment_->get_sample_count(); | |
592 | ||
593 | const uint64_t samples_to_process = | |
594 | (input_sample_count > output_sample_count) ? | |
595 | (input_sample_count - output_sample_count) : 0; | |
596 | ||
597 | // Process the samples if necessary... | |
598 | if (samples_to_process > 0) { | |
599 | const uint64_t unit_size = segment_->unit_size(); | |
600 | const uint64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
601 | ||
602 | uint64_t processed_samples = 0; | |
603 | do { | |
604 | const uint64_t start_sample = output_sample_count + processed_samples; | |
605 | const uint64_t sample_count = | |
606 | min(samples_to_process - processed_samples, chunk_sample_count); | |
607 | ||
608 | mux_logic_samples(start_sample, start_sample + sample_count); | |
609 | processed_samples += sample_count; | |
610 | ||
611 | // ...and process the newly muxed logic data | |
612 | decode_input_cond_.notify_one(); | |
613 | } while (processed_samples < samples_to_process); | |
614 | } | |
615 | ||
616 | if (session_.get_capture_state() != Session::Stopped) { | |
617 | // Wait for more input | |
618 | unique_lock<mutex> logic_mux_lock(logic_mux_mutex_); | |
619 | logic_mux_cond_.wait(logic_mux_lock); | |
620 | } | |
621 | } while ((session_.get_capture_state() != Session::Stopped) && !logic_mux_interrupt_); | |
622 | ||
623 | // No more input data and session is stopped, let the decode thread | |
624 | // process any pending data, terminate and release the global SRD mutex | |
625 | // in order to let other decoders run | |
626 | decode_input_cond_.notify_one(); | |
47747218 SA |
627 | } |
628 | ||
629 | void DecodeSignal::decode_data( | |
e91883bb | 630 | const int64_t abs_start_samplenum, const int64_t sample_count) |
47747218 | 631 | { |
27a3f09b SA |
632 | const int64_t unit_size = segment_->unit_size(); |
633 | const int64_t chunk_sample_count = DecodeChunkLength / unit_size; | |
47747218 SA |
634 | |
635 | for (int64_t i = abs_start_samplenum; | |
636 | !decode_interrupt_ && (i < (abs_start_samplenum + sample_count)); | |
637 | i += chunk_sample_count) { | |
638 | ||
639 | const int64_t chunk_end = min(i + chunk_sample_count, | |
640 | abs_start_samplenum + sample_count); | |
641 | ||
642 | const uint8_t* chunk = segment_->get_samples(i, chunk_end); | |
643 | ||
e91883bb | 644 | if (srd_session_send(srd_session_, i, chunk_end, chunk, |
47747218 SA |
645 | (chunk_end - i) * unit_size, unit_size) != SRD_OK) { |
646 | error_message_ = tr("Decoder reported an error"); | |
647 | delete[] chunk; | |
648 | break; | |
649 | } | |
650 | delete[] chunk; | |
651 | ||
652 | { | |
653 | lock_guard<mutex> lock(output_mutex_); | |
654 | samples_decoded_ = chunk_end; | |
655 | } | |
656 | } | |
657 | } | |
658 | ||
659 | void DecodeSignal::decode_proc() | |
660 | { | |
e91883bb | 661 | start_srd_session(); |
47747218 | 662 | |
27a3f09b SA |
663 | uint64_t sample_count; |
664 | uint64_t abs_start_samplenum = 0; | |
47747218 | 665 | do { |
27a3f09b SA |
666 | // Keep processing new samples until we exhaust the input data |
667 | do { | |
e91883bb SA |
668 | // Prevent any other decode threads from accessing libsigrokdecode |
669 | lock_guard<mutex> srd_lock(global_srd_mutex_); | |
670 | ||
27a3f09b SA |
671 | { |
672 | lock_guard<mutex> input_lock(input_mutex_); | |
673 | sample_count = segment_->get_sample_count() - abs_start_samplenum; | |
674 | } | |
675 | ||
676 | if (sample_count > 0) { | |
e91883bb | 677 | decode_data(abs_start_samplenum, sample_count); |
27a3f09b SA |
678 | abs_start_samplenum += sample_count; |
679 | } | |
680 | } while (error_message_.isEmpty() && (sample_count > 0)); | |
681 | ||
27a3f09b | 682 | if (error_message_.isEmpty()) { |
e91883bb SA |
683 | // Make sure all annotations are known to the frontend |
684 | new_annotations(); | |
685 | ||
27a3f09b SA |
686 | // Wait for new input data or an interrupt request |
687 | unique_lock<mutex> input_wait_lock(input_mutex_); | |
688 | decode_input_cond_.wait(input_wait_lock); | |
689 | } | |
690 | } while (error_message_.isEmpty() && !decode_interrupt_); | |
e91883bb SA |
691 | } |
692 | ||
693 | void DecodeSignal::start_srd_session() | |
694 | { | |
695 | if (!srd_session_) { | |
696 | // Create the session | |
697 | srd_session_new(&srd_session_); | |
698 | assert(srd_session_); | |
699 | ||
700 | // Create the decoders | |
701 | srd_decoder_inst *prev_di = nullptr; | |
702 | for (const shared_ptr<decode::Decoder> &dec : stack_) { | |
703 | srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_); | |
704 | ||
705 | if (!di) { | |
706 | error_message_ = tr("Failed to create decoder instance"); | |
707 | srd_session_destroy(srd_session_); | |
708 | return; | |
709 | } | |
710 | ||
711 | if (prev_di) | |
712 | srd_inst_stack(srd_session_, prev_di, di); | |
47747218 | 713 | |
e91883bb SA |
714 | prev_di = di; |
715 | } | |
716 | ||
717 | // Start the session | |
718 | srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE, | |
719 | g_variant_new_uint64(samplerate_)); | |
720 | ||
721 | srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN, | |
722 | DecodeSignal::annotation_callback, this); | |
723 | ||
724 | srd_session_start(srd_session_); | |
725 | } | |
726 | } | |
47747218 | 727 | |
e91883bb SA |
728 | void DecodeSignal::stop_srd_session() |
729 | { | |
730 | if (srd_session_) { | |
731 | // Destroy the session | |
732 | srd_session_destroy(srd_session_); | |
733 | srd_session_ = nullptr; | |
734 | } | |
47747218 SA |
735 | } |
736 | ||
a8a9222d SA |
737 | void DecodeSignal::connect_input_notifiers() |
738 | { | |
739 | // Disconnect the notification slot from the previous set of signals | |
740 | disconnect(this, SLOT(on_data_received())); | |
741 | ||
742 | // Connect the currently used signals to our slot | |
743 | for (data::DecodeChannel &ch : channels_) { | |
744 | if (!ch.assigned_signal) | |
745 | continue; | |
746 | ||
747 | shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data(); | |
748 | connect(logic_data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)), | |
749 | this, SLOT(on_data_received())); | |
750 | } | |
751 | } | |
752 | ||
47747218 SA |
753 | void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal) |
754 | { | |
755 | assert(pdata); | |
756 | assert(decoder); | |
757 | ||
758 | DecodeSignal *const ds = (DecodeSignal*)decode_signal; | |
759 | assert(ds); | |
760 | ||
761 | lock_guard<mutex> lock(ds->output_mutex_); | |
762 | ||
763 | const decode::Annotation a(pdata); | |
764 | ||
765 | // Find the row | |
766 | assert(pdata->pdo); | |
767 | assert(pdata->pdo->di); | |
768 | const srd_decoder *const decc = pdata->pdo->di->decoder; | |
769 | assert(decc); | |
770 | ||
771 | auto row_iter = ds->rows_.end(); | |
772 | ||
773 | // Try looking up the sub-row of this class | |
774 | const auto r = ds->class_rows_.find(make_pair(decc, a.format())); | |
775 | if (r != ds->class_rows_.end()) | |
776 | row_iter = ds->rows_.find((*r).second); | |
777 | else { | |
778 | // Failing that, use the decoder as a key | |
779 | row_iter = ds->rows_.find(Row(decc)); | |
780 | } | |
781 | ||
782 | assert(row_iter != ds->rows_.end()); | |
783 | if (row_iter == ds->rows_.end()) { | |
784 | qDebug() << "Unexpected annotation: decoder = " << decc << | |
785 | ", format = " << a.format(); | |
786 | assert(false); | |
787 | return; | |
788 | } | |
789 | ||
790 | // Add the annotation | |
791 | (*row_iter).second.push_annotation(a); | |
792 | ||
793 | // Notify the frontend every DecodeNotifyPeriod annotations | |
794 | if (ds->inc_annotation_count() % DecodeNotifyPeriod == 0) | |
795 | ds->new_annotations(); | |
796 | } | |
797 | ||
798 | void DecodeSignal::on_capture_state_changed(int state) | |
799 | { | |
800 | // If a new acquisition was started, we need to start decoding from scratch | |
801 | if (state == Session::Running) | |
802 | begin_decode(); | |
803 | } | |
804 | ||
805 | void DecodeSignal::on_data_received() | |
806 | { | |
807 | logic_mux_cond_.notify_one(); | |
808 | } | |
809 | ||
ad908057 SA |
810 | } // namespace data |
811 | } // namespace pv |