2 * This file is part of the PulseView project.
4 * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
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.
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.
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/>.
25 #include "logicsegment.hpp"
26 #include "decodesignal.hpp"
27 #include "signaldata.hpp"
29 #include <pv/binding/decoder.hpp>
30 #include <pv/data/decode/decoder.hpp>
31 #include <pv/data/decode/row.hpp>
32 #include <pv/globalsettings.hpp>
33 #include <pv/session.hpp>
35 using std::lock_guard;
37 using std::make_shared;
39 using std::out_of_range;
40 using std::shared_ptr;
41 using std::unique_lock;
42 using pv::data::decode::Annotation;
43 using pv::data::decode::Decoder;
44 using pv::data::decode::Row;
49 const double DecodeSignal::DecodeMargin = 1.0;
50 const double DecodeSignal::DecodeThreshold = 0.2;
51 const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024;
54 DecodeSignal::DecodeSignal(pv::Session &session) :
55 SignalBase(nullptr, SignalBase::DecodeChannel),
57 srd_session_(nullptr),
58 logic_mux_data_invalid_(false),
59 current_segment_id_(0),
60 current_segment_(nullptr)
62 connect(&session_, SIGNAL(capture_state_changed(int)),
63 this, SLOT(on_capture_state_changed(int)));
66 DecodeSignal::~DecodeSignal()
71 const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const
76 void DecodeSignal::stack_decoder(const srd_decoder *decoder)
79 const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder);
81 stack_.push_back(dec);
83 // Set name if this decoder is the first in the list
84 if (stack_.size() == 1)
85 set_name(QString::fromUtf8(decoder->name));
87 // Include the newly created decode channels in the channel lists
88 update_channel_list();
90 auto_assign_signals(dec);
91 commit_decoder_channels();
95 void DecodeSignal::remove_decoder(int index)
98 assert(index < (int)stack_.size());
100 // Find the decoder in the stack
101 auto iter = stack_.begin();
102 for (int i = 0; i < index; i++, iter++)
103 assert(iter != stack_.end());
105 // Delete the element
108 // Update channels and decoded data
109 update_channel_list();
113 bool DecodeSignal::toggle_decoder_visibility(int index)
115 auto iter = stack_.cbegin();
116 for (int i = 0; i < index; i++, iter++)
117 assert(iter != stack_.end());
119 shared_ptr<Decoder> dec = *iter;
121 // Toggle decoder visibility
124 state = !dec->shown();
131 void DecodeSignal::reset_decode()
133 if (decode_thread_.joinable()) {
134 decode_interrupt_ = true;
135 decode_input_cond_.notify_one();
136 decode_thread_.join();
139 if (logic_mux_thread_.joinable()) {
140 logic_mux_interrupt_ = true;
141 logic_mux_cond_.notify_one();
142 logic_mux_thread_.join();
148 currently_processed_segment_ = 0;
149 current_segment_ = nullptr;
152 logic_mux_data_.reset();
153 logic_mux_data_invalid_ = true;
155 error_message_ = QString();
160 void DecodeSignal::begin_decode()
162 if (decode_thread_.joinable()) {
163 decode_interrupt_ = true;
164 decode_input_cond_.notify_one();
165 decode_thread_.join();
168 if (logic_mux_thread_.joinable()) {
169 logic_mux_interrupt_ = true;
170 logic_mux_cond_.notify_one();
171 logic_mux_thread_.join();
176 if (stack_.size() == 0) {
177 error_message_ = tr("No decoders");
181 assert(channels_.size() > 0);
183 if (get_assigned_signal_count() == 0) {
184 error_message_ = tr("There are no channels assigned to this decoder");
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;
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");
203 // Map out all the annotation classes
204 for (const shared_ptr<decode::Decoder> &dec : stack_) {
206 const srd_decoder *const decc = dec->decoder();
207 assert(dec->decoder());
209 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
210 const srd_decoder_annotation_row *const ann_row =
211 (srd_decoder_annotation_row *)l->data;
214 const Row row(decc, ann_row);
216 for (const GSList *ll = ann_row->ann_classes;
218 class_rows_[make_pair(decc,
219 GPOINTER_TO_INT(ll->data))] = row;
223 // Free the logic data and its segment(s) if it needs to be updated
224 if (logic_mux_data_invalid_)
225 logic_mux_data_.reset();
227 if (!logic_mux_data_) {
228 const uint32_t ch_count = get_assigned_signal_count();
229 logic_unit_size_ = (ch_count + 7) / 8;
230 logic_mux_data_ = make_shared<Logic>(ch_count);
233 create_new_segment();
235 // Make sure the logic output data is complete and up-to-date
236 logic_mux_interrupt_ = false;
237 logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
239 // Decode the muxed logic data
240 decode_interrupt_ = false;
241 decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
243 // Receive notifications when new sample data is available
244 connect_input_notifiers();
247 QString DecodeSignal::error_message() const
249 lock_guard<mutex> lock(output_mutex_);
250 return error_message_;
253 const vector<data::DecodeChannel> DecodeSignal::get_channels() const
258 void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
260 bool new_assignment = false;
262 // Try to auto-select channels that don't have signals assigned yet
263 for (data::DecodeChannel &ch : channels_) {
264 // If a decoder is given, auto-assign only its channels
265 if (dec && (ch.decoder_ != dec))
268 if (ch.assigned_signal)
271 for (shared_ptr<data::SignalBase> s : session_.signalbases()) {
272 const QString ch_name = ch.name.toLower();
273 const QString s_name = s->name().toLower();
275 if (s->logic_data() &&
276 ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
277 ch.assigned_signal = s.get();
278 new_assignment = true;
283 if (new_assignment) {
284 logic_mux_data_invalid_ = true;
285 commit_decoder_channels();
290 void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
292 for (data::DecodeChannel &ch : channels_)
293 if (ch.id == channel_id) {
294 ch.assigned_signal = signal;
295 logic_mux_data_invalid_ = true;
298 commit_decoder_channels();
303 int DecodeSignal::get_assigned_signal_count() const
305 // Count all channels that have a signal assigned to them
306 return count_if(channels_.begin(), channels_.end(),
307 [](data::DecodeChannel ch) { return ch.assigned_signal; });
310 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
312 for (data::DecodeChannel &ch : channels_)
313 if (ch.id == channel_id)
314 ch.initial_pin_state = init_state;
321 double DecodeSignal::samplerate() const
325 // TODO For now, we simply return the first samplerate that we have
327 const DecodeSegment *segment = &(segments_.at(0));
328 result = segment->samplerate;
329 } catch (out_of_range) {
336 const pv::util::Timestamp DecodeSignal::start_time() const
338 pv::util::Timestamp result;
340 // TODO For now, we simply return the first start time that we have
342 const DecodeSegment *segment = &(segments_.at(0));
343 result = segment->start_time;
344 } catch (out_of_range) {
351 int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const
353 // The working sample count is the highest sample number for
354 // which all used signals have data available, so go through
355 // all channels and use the lowest overall sample count of the
358 int64_t count = std::numeric_limits<int64_t>::max();
359 bool no_signals_assigned = true;
361 for (const data::DecodeChannel &ch : channels_)
362 if (ch.assigned_signal) {
363 no_signals_assigned = false;
365 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
366 if (!logic_data || logic_data->logic_segments().empty())
370 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
371 count = min(count, (int64_t)segment->get_sample_count());
372 } catch (out_of_range) {
377 return (no_signals_assigned ? 0 : count);
380 int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id) const
382 lock_guard<mutex> decode_lock(output_mutex_);
387 const DecodeSegment *segment = &(segments_.at(segment_id));
388 result = segment->samples_decoded;
389 } catch (out_of_range) {
396 vector<Row> DecodeSignal::visible_rows() const
398 lock_guard<mutex> lock(output_mutex_);
402 for (const shared_ptr<decode::Decoder> &dec : stack_) {
407 const srd_decoder *const decc = dec->decoder();
408 assert(dec->decoder());
410 // Add a row for the decoder if it doesn't have a row list
411 if (!decc->annotation_rows)
412 rows.emplace_back(decc);
414 // Add the decoder rows
415 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
416 const srd_decoder_annotation_row *const ann_row =
417 (srd_decoder_annotation_row *)l->data;
419 rows.emplace_back(decc, ann_row);
426 void DecodeSignal::get_annotation_subset(
427 vector<pv::data::decode::Annotation> &dest,
428 const decode::Row &row, uint32_t segment_id, uint64_t start_sample,
429 uint64_t end_sample) const
431 lock_guard<mutex> lock(output_mutex_);
434 const DecodeSegment *segment = &(segments_.at(segment_id));
435 const map<const decode::Row, decode::RowData> *rows =
436 &(segment->annotation_rows);
438 const auto iter = rows->find(row);
439 if (iter != rows->end())
440 (*iter).second.get_annotation_subset(dest,
441 start_sample, end_sample);
442 } catch (out_of_range) {
447 void DecodeSignal::save_settings(QSettings &settings) const
449 SignalBase::save_settings(settings);
451 settings.setValue("decoders", (int)(stack_.size()));
453 // Save decoder stack
455 for (shared_ptr<decode::Decoder> decoder : stack_) {
456 settings.beginGroup("decoder" + QString::number(decoder_idx++));
458 settings.setValue("id", decoder->decoder()->id);
460 // Save decoder options
461 const map<string, GVariant*>& options = decoder->options();
463 settings.setValue("options", (int)options.size());
465 // Note: decode::Decoder::options() returns only the options
466 // that differ from the default. See binding::Decoder::getter()
468 for (auto option : options) {
469 settings.beginGroup("option" + QString::number(i));
470 settings.setValue("name", QString::fromStdString(option.first));
471 GlobalSettings::store_gvariant(settings, option.second);
479 // Save channel mapping
480 settings.setValue("channels", (int)channels_.size());
482 for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
483 auto channel = find_if(channels_.begin(), channels_.end(),
484 [&](data::DecodeChannel ch) { return ch.id == channel_id; });
486 if (channel == channels_.end()) {
487 qDebug() << "ERROR: Gap in channel index:" << channel_id;
491 settings.beginGroup("channel" + QString::number(channel_id));
493 settings.setValue("name", channel->name); // Useful for debugging
494 settings.setValue("initial_pin_state", channel->initial_pin_state);
496 if (channel->assigned_signal)
497 settings.setValue("assigned_signal_name", channel->assigned_signal->name());
503 void DecodeSignal::restore_settings(QSettings &settings)
505 SignalBase::restore_settings(settings);
507 // Restore decoder stack
508 GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
510 int decoders = settings.value("decoders").toInt();
512 for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
513 settings.beginGroup("decoder" + QString::number(decoder_idx));
515 QString id = settings.value("id").toString();
517 for (GSList *entry = dec_list; entry; entry = entry->next) {
518 const srd_decoder *dec = (srd_decoder*)entry->data;
522 if (QString::fromUtf8(dec->id) == id) {
523 shared_ptr<decode::Decoder> decoder =
524 make_shared<decode::Decoder>(dec);
526 stack_.push_back(decoder);
528 // Restore decoder options that differ from their default
529 int options = settings.value("options").toInt();
531 for (int i = 0; i < options; i++) {
532 settings.beginGroup("option" + QString::number(i));
533 QString name = settings.value("name").toString();
534 GVariant *value = GlobalSettings::restore_gvariant(settings);
535 decoder->set_option(name.toUtf8(), value);
539 // Include the newly created decode channels in the channel lists
540 update_channel_list();
549 // Restore channel mapping
550 unsigned int channels = settings.value("channels").toInt();
552 const unordered_set< shared_ptr<data::SignalBase> > signalbases =
553 session_.signalbases();
555 for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
556 auto channel = find_if(channels_.begin(), channels_.end(),
557 [&](data::DecodeChannel ch) { return ch.id == channel_id; });
559 if (channel == channels_.end()) {
560 qDebug() << "ERROR: Non-existant channel index:" << channel_id;
564 settings.beginGroup("channel" + QString::number(channel_id));
566 QString assigned_signal_name = settings.value("assigned_signal_name").toString();
568 for (shared_ptr<data::SignalBase> signal : signalbases)
569 if (signal->name() == assigned_signal_name)
570 channel->assigned_signal = signal.get();
572 channel->initial_pin_state = settings.value("initial_pin_state").toInt();
577 // Update the internal structures
578 update_channel_list();
579 commit_decoder_channels();
584 void DecodeSignal::update_channel_list()
586 vector<data::DecodeChannel> prev_channels = channels_;
591 // Copy existing entries, create new as needed
592 for (shared_ptr<Decoder> decoder : stack_) {
593 const srd_decoder* srd_d = decoder->decoder();
596 // Mandatory channels
597 for (l = srd_d->channels; l; l = l->next) {
598 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
599 bool ch_added = false;
601 // Copy but update ID if this channel was in the list before
602 for (data::DecodeChannel &ch : prev_channels)
603 if (ch.pdch_ == pdch) {
605 channels_.push_back(ch);
611 // Create new entry without a mapped signal
612 data::DecodeChannel ch = {id++, 0, false, nullptr,
613 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
614 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
615 channels_.push_back(ch);
620 for (l = srd_d->opt_channels; l; l = l->next) {
621 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
622 bool ch_added = false;
624 // Copy but update ID if this channel was in the list before
625 for (data::DecodeChannel &ch : prev_channels)
626 if (ch.pdch_ == pdch) {
628 channels_.push_back(ch);
634 // Create new entry without a mapped signal
635 data::DecodeChannel ch = {id++, 0, true, nullptr,
636 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
637 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
638 channels_.push_back(ch);
643 // Invalidate the logic output data if the channel assignment changed
644 if (prev_channels.size() != channels_.size()) {
645 // The number of channels changed, there's definitely a difference
646 logic_mux_data_invalid_ = true;
648 // Same number but assignment may still differ, so compare all channels
649 for (size_t i = 0; i < channels_.size(); i++) {
650 const data::DecodeChannel &p_ch = prev_channels[i];
651 const data::DecodeChannel &ch = channels_[i];
653 if ((p_ch.pdch_ != ch.pdch_) ||
654 (p_ch.assigned_signal != ch.assigned_signal)) {
655 logic_mux_data_invalid_ = true;
665 void DecodeSignal::commit_decoder_channels()
667 // Submit channel list to every decoder, containing only the relevant channels
668 for (shared_ptr<decode::Decoder> dec : stack_) {
669 vector<data::DecodeChannel*> channel_list;
671 for (data::DecodeChannel &ch : channels_)
672 if (ch.decoder_ == dec)
673 channel_list.push_back(&ch);
675 dec->set_channels(channel_list);
678 // Channel bit IDs must be in sync with the channel's apperance in channels_
680 for (data::DecodeChannel &ch : channels_)
681 if (ch.assigned_signal)
685 void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end)
687 // Enforce end to be greater than start
691 // Fetch all segments and their data
692 // TODO Currently, we assume only a single segment exists
693 vector<shared_ptr<LogicSegment> > segments;
694 vector<const uint8_t*> signal_data;
695 vector<uint8_t> signal_in_bytepos;
696 vector<uint8_t> signal_in_bitpos;
698 for (data::DecodeChannel &ch : channels_)
699 if (ch.assigned_signal) {
700 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
701 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front();
702 segments.push_back(segment);
704 uint8_t* data = new uint8_t[(end - start) * segment->unit_size()];
705 segment->get_samples(start, end, data);
706 signal_data.push_back(data);
708 const int bitpos = ch.assigned_signal->logic_bit_index();
709 signal_in_bytepos.push_back(bitpos / 8);
710 signal_in_bitpos.push_back(bitpos % 8);
713 // Perform the muxing of signal data into the output data
714 uint8_t* output = new uint8_t[(end - start) * logic_mux_segment_->unit_size()];
715 unsigned int signal_count = signal_data.size();
717 for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) {
721 const int out_sample_pos = sample_cnt * logic_mux_segment_->unit_size();
722 for (unsigned int i = 0; i < logic_mux_segment_->unit_size(); i++)
723 output[out_sample_pos + i] = 0;
725 for (unsigned int i = 0; i < signal_count; i++) {
726 const int in_sample_pos = sample_cnt * segments[i]->unit_size();
727 const uint8_t in_sample = 1 &
728 ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i]));
730 const uint8_t out_sample = output[out_sample_pos + bytepos];
732 output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos);
742 logic_mux_segment_->append_payload(output, (end - start) * logic_mux_segment_->unit_size());
745 for (const uint8_t* data : signal_data)
749 void DecodeSignal::logic_mux_proc()
752 const uint64_t input_sample_count = get_working_sample_count(currently_processed_segment_);
753 const uint64_t output_sample_count = logic_mux_segment_->get_sample_count();
755 const uint64_t samples_to_process =
756 (input_sample_count > output_sample_count) ?
757 (input_sample_count - output_sample_count) : 0;
759 // Process the samples if necessary...
760 if (samples_to_process > 0) {
761 const uint64_t unit_size = logic_mux_segment_->unit_size();
762 const uint64_t chunk_sample_count = DecodeChunkLength / unit_size;
764 uint64_t processed_samples = 0;
766 const uint64_t start_sample = output_sample_count + processed_samples;
767 const uint64_t sample_count =
768 min(samples_to_process - processed_samples, chunk_sample_count);
770 mux_logic_samples(start_sample, start_sample + sample_count);
771 processed_samples += sample_count;
773 // ...and process the newly muxed logic data
774 decode_input_cond_.notify_one();
775 } while (processed_samples < samples_to_process);
778 if (samples_to_process == 0) {
779 logic_mux_data_invalid_ = false;
781 // Wait for more input
782 unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
783 logic_mux_cond_.wait(logic_mux_lock);
785 } while (!logic_mux_interrupt_);
788 void DecodeSignal::query_input_metadata()
790 // Update the samplerate and start time because we cannot start
791 // the libsrd session without the current samplerate
793 // TODO Currently we assume all channels have the same sample rate
795 bool samplerate_valid = false;
796 data::DecodeChannel *any_channel;
797 shared_ptr<Logic> logic_data;
799 assert(current_segment_);
802 any_channel = &(*find_if(channels_.begin(), channels_.end(),
803 [](data::DecodeChannel ch) { return ch.assigned_signal; }));
805 logic_data = any_channel->assigned_signal->logic_data();
808 // Wait until input data is available or an interrupt was requested
809 unique_lock<mutex> input_wait_lock(input_mutex_);
810 decode_input_cond_.wait(input_wait_lock);
812 } while (!logic_data && !decode_interrupt_);
814 if (decode_interrupt_)
818 if (!logic_data->logic_segments().empty()) {
819 shared_ptr<LogicSegment> first_segment =
820 any_channel->assigned_signal->logic_data()->logic_segments().front();
822 current_segment_->start_time = first_segment->start_time();
823 current_segment_->samplerate = first_segment->samplerate();
824 if (current_segment_->samplerate > 0)
825 samplerate_valid = true;
828 if (!samplerate_valid) {
829 // Wait until input data is available or an interrupt was requested
830 unique_lock<mutex> input_wait_lock(input_mutex_);
831 decode_input_cond_.wait(input_wait_lock);
833 } while (!samplerate_valid && !decode_interrupt_);
836 void DecodeSignal::decode_data(
837 const int64_t abs_start_samplenum, const int64_t sample_count)
839 assert(current_segment_);
841 const int64_t unit_size = logic_mux_segment_->unit_size();
842 const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
844 for (int64_t i = abs_start_samplenum;
845 !decode_interrupt_ && (i < (abs_start_samplenum + sample_count));
846 i += chunk_sample_count) {
848 const int64_t chunk_end = min(i + chunk_sample_count,
849 abs_start_samplenum + sample_count);
851 int64_t data_size = (chunk_end - i) * unit_size;
852 uint8_t* chunk = new uint8_t[data_size];
853 logic_mux_segment_->get_samples(i, chunk_end, chunk);
855 if (srd_session_send(srd_session_, i, chunk_end, chunk,
856 data_size, unit_size) != SRD_OK) {
857 error_message_ = tr("Decoder reported an error");
865 lock_guard<mutex> lock(output_mutex_);
866 current_segment_->samples_decoded = chunk_end;
869 // Notify the frontend that we processed some data and
870 // possibly have new annotations as well
875 void DecodeSignal::decode_proc()
877 query_input_metadata();
879 if (decode_interrupt_)
884 uint64_t sample_count;
885 uint64_t abs_start_samplenum = 0;
887 // Keep processing new samples until we exhaust the input data
889 lock_guard<mutex> input_lock(input_mutex_);
890 sample_count = logic_mux_segment_->get_sample_count() - abs_start_samplenum;
892 if (sample_count > 0) {
893 decode_data(abs_start_samplenum, sample_count);
894 abs_start_samplenum += sample_count;
896 } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
898 if (error_message_.isEmpty() && !decode_interrupt_) {
899 if (sample_count == 0)
902 // Wait for new input data or an interrupt was requested
903 unique_lock<mutex> input_wait_lock(input_mutex_);
904 decode_input_cond_.wait(input_wait_lock);
906 } while (error_message_.isEmpty() && !decode_interrupt_);
909 void DecodeSignal::start_srd_session()
914 assert(current_segment_);
916 // Create the session
917 srd_session_new(&srd_session_);
918 assert(srd_session_);
920 // Create the decoders
921 srd_decoder_inst *prev_di = nullptr;
922 for (const shared_ptr<decode::Decoder> &dec : stack_) {
923 srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_);
926 error_message_ = tr("Failed to create decoder instance");
927 srd_session_destroy(srd_session_);
932 srd_inst_stack(srd_session_, prev_di, di);
938 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
939 g_variant_new_uint64(current_segment_->samplerate));
941 srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
942 DecodeSignal::annotation_callback, this);
944 srd_session_start(srd_session_);
947 void DecodeSignal::stop_srd_session()
950 // Destroy the session
951 srd_session_destroy(srd_session_);
952 srd_session_ = nullptr;
956 void DecodeSignal::connect_input_notifiers()
958 // Disconnect the notification slot from the previous set of signals
959 disconnect(this, SLOT(on_data_cleared()));
960 disconnect(this, SLOT(on_data_received()));
962 // Connect the currently used signals to our slot
963 for (data::DecodeChannel &ch : channels_) {
964 if (!ch.assigned_signal)
967 const data::SignalBase *signal = ch.assigned_signal;
968 connect(signal, SIGNAL(samples_cleared()),
969 this, SLOT(on_data_cleared()));
970 connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
971 this, SLOT(on_data_received()));
975 void DecodeSignal::create_new_segment()
977 // Create logic mux segment if we're recreating the muxed data
978 if (logic_mux_data_invalid_) {
979 const double samplerate =
980 (current_segment_) ? current_segment_->samplerate : 0;
982 logic_mux_segment_ = make_shared<LogicSegment>(*logic_mux_data_,
983 logic_unit_size_, samplerate);
984 logic_mux_data_->push_segment(logic_mux_segment_);
987 // Create annotation segment
988 segments_.emplace_back(DecodeSegment());
989 current_segment_ = &(segments_.back());
991 // TODO Currently we assume there's only one sample rate
992 current_segment_->samplerate = segments_.front().samplerate;
994 // Add annotation classes
995 for (const shared_ptr<decode::Decoder> &dec : stack_) {
997 const srd_decoder *const decc = dec->decoder();
998 assert(dec->decoder());
1000 // Add a row for the decoder if it doesn't have a row list
1001 if (!decc->annotation_rows)
1002 (current_segment_->annotation_rows)[Row(decc)] = decode::RowData();
1004 // Add the decoder rows
1005 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
1006 const srd_decoder_annotation_row *const ann_row =
1007 (srd_decoder_annotation_row *)l->data;
1010 const Row row(decc, ann_row);
1012 // Add a new empty row data object
1013 (current_segment_->annotation_rows)[row] = decode::RowData();
1018 void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal)
1021 assert(decode_signal);
1023 DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1026 lock_guard<mutex> lock(ds->output_mutex_);
1030 assert(pdata->pdo->di);
1031 const srd_decoder *const decc = pdata->pdo->di->decoder;
1033 assert(ds->current_segment_);
1035 const srd_proto_data_annotation *const pda =
1036 (const srd_proto_data_annotation*)pdata->data;
1039 auto row_iter = ds->current_segment_->annotation_rows.end();
1041 // Try looking up the sub-row of this class
1042 const auto format = pda->ann_class;
1043 const auto r = ds->class_rows_.find(make_pair(decc, format));
1044 if (r != ds->class_rows_.end())
1045 row_iter = ds->current_segment_->annotation_rows.find((*r).second);
1047 // Failing that, use the decoder as a key
1048 row_iter = ds->current_segment_->annotation_rows.find(Row(decc));
1051 if (row_iter == ds->current_segment_->annotation_rows.end()) {
1052 qDebug() << "Unexpected annotation: decoder = " << decc <<
1053 ", format = " << format;
1058 // Add the annotation
1059 (*row_iter).second.emplace_annotation(pdata);
1062 void DecodeSignal::on_capture_state_changed(int state)
1064 // If a new acquisition was started, we need to start decoding from scratch
1065 if (state == Session::Running) {
1066 logic_mux_data_invalid_ = true;
1071 void DecodeSignal::on_data_cleared()
1076 void DecodeSignal::on_data_received()
1078 if (!logic_mux_thread_.joinable())
1081 logic_mux_cond_.notify_one();