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_mux_unit_size_ = (ch_count + 7) / 8;
230 logic_mux_data_ = make_shared<Logic>(ch_count);
233 // Receive notifications when new sample data is available
234 connect_input_notifiers();
236 const uint32_t segment_count = get_input_segment_count();
238 if (segment_count == 0) {
239 error_message_ = tr("No input data");
243 for (uint32_t i = 0; i < segment_count; i++)
244 create_new_segment();
246 // Make sure the logic output data is complete and up-to-date
247 logic_mux_interrupt_ = false;
248 logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
250 // Decode the muxed logic data
251 decode_interrupt_ = false;
252 decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
255 QString DecodeSignal::error_message() const
257 lock_guard<mutex> lock(output_mutex_);
258 return error_message_;
261 const vector<data::DecodeChannel> DecodeSignal::get_channels() const
266 void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
268 bool new_assignment = false;
270 // Try to auto-select channels that don't have signals assigned yet
271 for (data::DecodeChannel &ch : channels_) {
272 // If a decoder is given, auto-assign only its channels
273 if (dec && (ch.decoder_ != dec))
276 if (ch.assigned_signal)
279 for (shared_ptr<data::SignalBase> s : session_.signalbases()) {
280 const QString ch_name = ch.name.toLower();
281 const QString s_name = s->name().toLower();
283 if (s->logic_data() &&
284 ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
285 ch.assigned_signal = s.get();
286 new_assignment = true;
291 if (new_assignment) {
292 logic_mux_data_invalid_ = true;
293 commit_decoder_channels();
298 void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
300 for (data::DecodeChannel &ch : channels_)
301 if (ch.id == channel_id) {
302 ch.assigned_signal = signal;
303 logic_mux_data_invalid_ = true;
306 commit_decoder_channels();
311 int DecodeSignal::get_assigned_signal_count() const
313 // Count all channels that have a signal assigned to them
314 return count_if(channels_.begin(), channels_.end(),
315 [](data::DecodeChannel ch) { return ch.assigned_signal; });
318 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
320 for (data::DecodeChannel &ch : channels_)
321 if (ch.id == channel_id)
322 ch.initial_pin_state = init_state;
329 double DecodeSignal::samplerate() const
333 // TODO For now, we simply return the first samplerate that we have
335 const DecodeSegment *segment = &(segments_.at(0));
336 result = segment->samplerate;
337 } catch (out_of_range) {
344 const pv::util::Timestamp DecodeSignal::start_time() const
346 pv::util::Timestamp result;
348 // TODO For now, we simply return the first start time that we have
350 const DecodeSegment *segment = &(segments_.at(0));
351 result = segment->start_time;
352 } catch (out_of_range) {
359 uint32_t DecodeSignal::get_input_segment_count() const
361 uint64_t count = std::numeric_limits<uint64_t>::max();
362 bool no_signals_assigned = true;
364 for (const data::DecodeChannel &ch : channels_)
365 if (ch.assigned_signal) {
366 no_signals_assigned = false;
368 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
369 if (!logic_data || logic_data->logic_segments().empty())
372 // Find the min value of all segment counts
373 if ((uint64_t)(logic_data->logic_segments().size()) < count)
374 count = logic_data->logic_segments().size();
377 return (no_signals_assigned ? 0 : count);
380 int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const
382 // The working sample count is the highest sample number for
383 // which all used signals have data available, so go through all
384 // channels and use the lowest overall sample count of the segment
386 int64_t count = std::numeric_limits<int64_t>::max();
387 bool no_signals_assigned = true;
389 for (const data::DecodeChannel &ch : channels_)
390 if (ch.assigned_signal) {
391 no_signals_assigned = false;
393 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
394 if (!logic_data || logic_data->logic_segments().empty())
398 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
399 count = min(count, (int64_t)segment->get_sample_count());
400 } catch (out_of_range) {
405 return (no_signals_assigned ? 0 : count);
408 int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id) const
410 lock_guard<mutex> decode_lock(output_mutex_);
415 const DecodeSegment *segment = &(segments_.at(segment_id));
416 result = segment->samples_decoded;
417 } catch (out_of_range) {
424 vector<Row> DecodeSignal::visible_rows() const
426 lock_guard<mutex> lock(output_mutex_);
430 for (const shared_ptr<decode::Decoder> &dec : stack_) {
435 const srd_decoder *const decc = dec->decoder();
436 assert(dec->decoder());
438 // Add a row for the decoder if it doesn't have a row list
439 if (!decc->annotation_rows)
440 rows.emplace_back(decc);
442 // Add the decoder rows
443 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
444 const srd_decoder_annotation_row *const ann_row =
445 (srd_decoder_annotation_row *)l->data;
447 rows.emplace_back(decc, ann_row);
454 void DecodeSignal::get_annotation_subset(
455 vector<pv::data::decode::Annotation> &dest,
456 const decode::Row &row, uint32_t segment_id, uint64_t start_sample,
457 uint64_t end_sample) const
459 lock_guard<mutex> lock(output_mutex_);
462 const DecodeSegment *segment = &(segments_.at(segment_id));
463 const map<const decode::Row, decode::RowData> *rows =
464 &(segment->annotation_rows);
466 const auto iter = rows->find(row);
467 if (iter != rows->end())
468 (*iter).second.get_annotation_subset(dest,
469 start_sample, end_sample);
470 } catch (out_of_range) {
475 void DecodeSignal::save_settings(QSettings &settings) const
477 SignalBase::save_settings(settings);
479 settings.setValue("decoders", (int)(stack_.size()));
481 // Save decoder stack
483 for (shared_ptr<decode::Decoder> decoder : stack_) {
484 settings.beginGroup("decoder" + QString::number(decoder_idx++));
486 settings.setValue("id", decoder->decoder()->id);
488 // Save decoder options
489 const map<string, GVariant*>& options = decoder->options();
491 settings.setValue("options", (int)options.size());
493 // Note: decode::Decoder::options() returns only the options
494 // that differ from the default. See binding::Decoder::getter()
496 for (auto option : options) {
497 settings.beginGroup("option" + QString::number(i));
498 settings.setValue("name", QString::fromStdString(option.first));
499 GlobalSettings::store_gvariant(settings, option.second);
507 // Save channel mapping
508 settings.setValue("channels", (int)channels_.size());
510 for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
511 auto channel = find_if(channels_.begin(), channels_.end(),
512 [&](data::DecodeChannel ch) { return ch.id == channel_id; });
514 if (channel == channels_.end()) {
515 qDebug() << "ERROR: Gap in channel index:" << channel_id;
519 settings.beginGroup("channel" + QString::number(channel_id));
521 settings.setValue("name", channel->name); // Useful for debugging
522 settings.setValue("initial_pin_state", channel->initial_pin_state);
524 if (channel->assigned_signal)
525 settings.setValue("assigned_signal_name", channel->assigned_signal->name());
531 void DecodeSignal::restore_settings(QSettings &settings)
533 SignalBase::restore_settings(settings);
535 // Restore decoder stack
536 GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
538 int decoders = settings.value("decoders").toInt();
540 for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
541 settings.beginGroup("decoder" + QString::number(decoder_idx));
543 QString id = settings.value("id").toString();
545 for (GSList *entry = dec_list; entry; entry = entry->next) {
546 const srd_decoder *dec = (srd_decoder*)entry->data;
550 if (QString::fromUtf8(dec->id) == id) {
551 shared_ptr<decode::Decoder> decoder =
552 make_shared<decode::Decoder>(dec);
554 stack_.push_back(decoder);
556 // Restore decoder options that differ from their default
557 int options = settings.value("options").toInt();
559 for (int i = 0; i < options; i++) {
560 settings.beginGroup("option" + QString::number(i));
561 QString name = settings.value("name").toString();
562 GVariant *value = GlobalSettings::restore_gvariant(settings);
563 decoder->set_option(name.toUtf8(), value);
567 // Include the newly created decode channels in the channel lists
568 update_channel_list();
577 // Restore channel mapping
578 unsigned int channels = settings.value("channels").toInt();
580 const unordered_set< shared_ptr<data::SignalBase> > signalbases =
581 session_.signalbases();
583 for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
584 auto channel = find_if(channels_.begin(), channels_.end(),
585 [&](data::DecodeChannel ch) { return ch.id == channel_id; });
587 if (channel == channels_.end()) {
588 qDebug() << "ERROR: Non-existant channel index:" << channel_id;
592 settings.beginGroup("channel" + QString::number(channel_id));
594 QString assigned_signal_name = settings.value("assigned_signal_name").toString();
596 for (shared_ptr<data::SignalBase> signal : signalbases)
597 if (signal->name() == assigned_signal_name)
598 channel->assigned_signal = signal.get();
600 channel->initial_pin_state = settings.value("initial_pin_state").toInt();
605 // Update the internal structures
606 update_channel_list();
607 commit_decoder_channels();
612 void DecodeSignal::update_channel_list()
614 vector<data::DecodeChannel> prev_channels = channels_;
619 // Copy existing entries, create new as needed
620 for (shared_ptr<Decoder> decoder : stack_) {
621 const srd_decoder* srd_d = decoder->decoder();
624 // Mandatory channels
625 for (l = srd_d->channels; l; l = l->next) {
626 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
627 bool ch_added = false;
629 // Copy but update ID if this channel was in the list before
630 for (data::DecodeChannel &ch : prev_channels)
631 if (ch.pdch_ == pdch) {
633 channels_.push_back(ch);
639 // Create new entry without a mapped signal
640 data::DecodeChannel ch = {id++, 0, false, nullptr,
641 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
642 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
643 channels_.push_back(ch);
648 for (l = srd_d->opt_channels; l; l = l->next) {
649 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
650 bool ch_added = false;
652 // Copy but update ID if this channel was in the list before
653 for (data::DecodeChannel &ch : prev_channels)
654 if (ch.pdch_ == pdch) {
656 channels_.push_back(ch);
662 // Create new entry without a mapped signal
663 data::DecodeChannel ch = {id++, 0, true, nullptr,
664 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
665 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
666 channels_.push_back(ch);
671 // Invalidate the logic output data if the channel assignment changed
672 if (prev_channels.size() != channels_.size()) {
673 // The number of channels changed, there's definitely a difference
674 logic_mux_data_invalid_ = true;
676 // Same number but assignment may still differ, so compare all channels
677 for (size_t i = 0; i < channels_.size(); i++) {
678 const data::DecodeChannel &p_ch = prev_channels[i];
679 const data::DecodeChannel &ch = channels_[i];
681 if ((p_ch.pdch_ != ch.pdch_) ||
682 (p_ch.assigned_signal != ch.assigned_signal)) {
683 logic_mux_data_invalid_ = true;
693 void DecodeSignal::commit_decoder_channels()
695 // Submit channel list to every decoder, containing only the relevant channels
696 for (shared_ptr<decode::Decoder> dec : stack_) {
697 vector<data::DecodeChannel*> channel_list;
699 for (data::DecodeChannel &ch : channels_)
700 if (ch.decoder_ == dec)
701 channel_list.push_back(&ch);
703 dec->set_channels(channel_list);
706 // Channel bit IDs must be in sync with the channel's apperance in channels_
708 for (data::DecodeChannel &ch : channels_)
709 if (ch.assigned_signal)
713 void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end)
715 // Enforce end to be greater than start
719 // Fetch the channel segments and their data
720 vector<shared_ptr<LogicSegment> > segments;
721 vector<const uint8_t*> signal_data;
722 vector<uint8_t> signal_in_bytepos;
723 vector<uint8_t> signal_in_bitpos;
725 for (data::DecodeChannel &ch : channels_)
726 if (ch.assigned_signal) {
727 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
729 shared_ptr<LogicSegment> segment;
731 segment = logic_data->logic_segments().at(segment_id);
732 } catch (out_of_range) {
733 qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \
734 << "has no logic segment" << segment_id;
737 segments.push_back(segment);
739 uint8_t* data = new uint8_t[(end - start) * segment->unit_size()];
740 segment->get_samples(start, end, data);
741 signal_data.push_back(data);
743 const int bitpos = ch.assigned_signal->logic_bit_index();
744 signal_in_bytepos.push_back(bitpos / 8);
745 signal_in_bitpos.push_back(bitpos % 8);
749 shared_ptr<LogicSegment> output_segment;
751 output_segment = logic_mux_data_->logic_segments().at(segment_id);
752 } catch (out_of_range) {
753 qDebug() << "Muxer error for" << name() << ": no logic mux segment" \
754 << segment_id << "in mux_logic_samples(), mux segments size is" \
755 << logic_mux_data_->logic_segments().size();
759 // Perform the muxing of signal data into the output data
760 uint8_t* output = new uint8_t[(end - start) * logic_mux_segment_->unit_size()];
761 unsigned int signal_count = signal_data.size();
763 for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) {
767 const int out_sample_pos = sample_cnt * logic_mux_segment_->unit_size();
768 for (unsigned int i = 0; i < logic_mux_segment_->unit_size(); i++)
769 output[out_sample_pos + i] = 0;
771 for (unsigned int i = 0; i < signal_count; i++) {
772 const int in_sample_pos = sample_cnt * segments[i]->unit_size();
773 const uint8_t in_sample = 1 &
774 ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i]));
776 const uint8_t out_sample = output[out_sample_pos + bytepos];
778 output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos);
788 logic_mux_segment_->append_payload(output, (end - start) * logic_mux_segment_->unit_size());
791 for (const uint8_t* data : signal_data)
795 void DecodeSignal::logic_mux_proc()
797 uint32_t segment_id = 0;
800 logic_mux_segment_ = logic_mux_data_->logic_segments().front();
801 } catch (out_of_range) {
802 qDebug() << "Muxer error for" << name() << ": no logic mux segments";
807 const uint64_t input_sample_count = get_working_sample_count(segment_id);
808 const uint64_t output_sample_count = logic_mux_segment_->get_sample_count();
810 const uint64_t samples_to_process =
811 (input_sample_count > output_sample_count) ?
812 (input_sample_count - output_sample_count) : 0;
814 // Process the samples if necessary...
815 if (samples_to_process > 0) {
816 const uint64_t unit_size = logic_mux_segment_->unit_size();
817 const uint64_t chunk_sample_count = DecodeChunkLength / unit_size;
819 uint64_t processed_samples = 0;
821 const uint64_t start_sample = output_sample_count + processed_samples;
822 const uint64_t sample_count =
823 min(samples_to_process - processed_samples, chunk_sample_count);
825 mux_logic_samples(segment_id, start_sample, start_sample + sample_count);
826 processed_samples += sample_count;
828 // ...and process the newly muxed logic data
829 decode_input_cond_.notify_one();
830 } while (processed_samples < samples_to_process);
833 if (samples_to_process == 0) {
834 // TODO Optimize this by caching the input segment count and only
835 // querying it when the cached value was reached
836 if (segment_id < get_input_segment_count() - 1) {
837 // Process next segment
841 logic_mux_segment_ = logic_mux_data_->logic_segments().at(segment_id);
842 } catch (out_of_range) {
843 qDebug() << "Muxer error for" << name() << ": no logic mux segment" \
844 << segment_id << "in logic_mux_proc(), mux segments size is" \
845 << logic_mux_data_->logic_segments().size();
850 // All segments have been processed
851 logic_mux_data_invalid_ = false;
853 // Wait for more input
854 unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
855 logic_mux_cond_.wait(logic_mux_lock);
858 } while (!logic_mux_interrupt_);
861 void DecodeSignal::query_input_metadata()
863 // Update the samplerate and start time because we cannot start
864 // the libsrd session without the current samplerate
866 // TODO Currently we assume all channels have the same sample rate
868 bool samplerate_valid = false;
869 data::DecodeChannel *any_channel;
870 shared_ptr<Logic> logic_data;
872 assert(current_segment_);
875 any_channel = &(*find_if(channels_.begin(), channels_.end(),
876 [](data::DecodeChannel ch) { return ch.assigned_signal; }));
878 logic_data = any_channel->assigned_signal->logic_data();
881 // Wait until input data is available or an interrupt was requested
882 unique_lock<mutex> input_wait_lock(input_mutex_);
883 decode_input_cond_.wait(input_wait_lock);
885 } while (!logic_data && !decode_interrupt_);
887 if (decode_interrupt_)
891 if (!logic_data->logic_segments().empty()) {
892 shared_ptr<LogicSegment> first_segment =
893 any_channel->assigned_signal->logic_data()->logic_segments().front();
895 current_segment_->start_time = first_segment->start_time();
896 current_segment_->samplerate = first_segment->samplerate();
897 if (current_segment_->samplerate > 0)
898 samplerate_valid = true;
901 if (!samplerate_valid) {
902 // Wait until input data is available or an interrupt was requested
903 unique_lock<mutex> input_wait_lock(input_mutex_);
904 decode_input_cond_.wait(input_wait_lock);
906 } while (!samplerate_valid && !decode_interrupt_);
909 void DecodeSignal::decode_data(
910 const int64_t abs_start_samplenum, const int64_t sample_count)
912 assert(current_segment_);
914 const int64_t unit_size = logic_mux_segment_->unit_size();
915 const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
917 for (int64_t i = abs_start_samplenum;
918 !decode_interrupt_ && (i < (abs_start_samplenum + sample_count));
919 i += chunk_sample_count) {
921 const int64_t chunk_end = min(i + chunk_sample_count,
922 abs_start_samplenum + sample_count);
924 int64_t data_size = (chunk_end - i) * unit_size;
925 uint8_t* chunk = new uint8_t[data_size];
926 logic_mux_segment_->get_samples(i, chunk_end, chunk);
928 if (srd_session_send(srd_session_, i, chunk_end, chunk,
929 data_size, unit_size) != SRD_OK) {
930 error_message_ = tr("Decoder reported an error");
938 lock_guard<mutex> lock(output_mutex_);
939 current_segment_->samples_decoded = chunk_end;
942 // Notify the frontend that we processed some data and
943 // possibly have new annotations as well
948 void DecodeSignal::decode_proc()
950 query_input_metadata();
952 if (decode_interrupt_)
957 uint64_t sample_count;
958 uint64_t abs_start_samplenum = 0;
960 // Keep processing new samples until we exhaust the input data
962 lock_guard<mutex> input_lock(input_mutex_);
963 sample_count = logic_mux_segment_->get_sample_count() - abs_start_samplenum;
965 if (sample_count > 0) {
966 decode_data(abs_start_samplenum, sample_count);
967 abs_start_samplenum += sample_count;
969 } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
971 if (error_message_.isEmpty() && !decode_interrupt_) {
972 if (sample_count == 0)
975 // Wait for new input data or an interrupt was requested
976 unique_lock<mutex> input_wait_lock(input_mutex_);
977 decode_input_cond_.wait(input_wait_lock);
979 } while (error_message_.isEmpty() && !decode_interrupt_);
982 void DecodeSignal::start_srd_session()
987 assert(current_segment_);
989 // Create the session
990 srd_session_new(&srd_session_);
991 assert(srd_session_);
993 // Create the decoders
994 srd_decoder_inst *prev_di = nullptr;
995 for (const shared_ptr<decode::Decoder> &dec : stack_) {
996 srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_);
999 error_message_ = tr("Failed to create decoder instance");
1000 srd_session_destroy(srd_session_);
1005 srd_inst_stack(srd_session_, prev_di, di);
1010 // Start the session
1011 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1012 g_variant_new_uint64(current_segment_->samplerate));
1014 srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
1015 DecodeSignal::annotation_callback, this);
1017 srd_session_start(srd_session_);
1020 void DecodeSignal::stop_srd_session()
1023 // Destroy the session
1024 srd_session_destroy(srd_session_);
1025 srd_session_ = nullptr;
1029 void DecodeSignal::connect_input_notifiers()
1031 // Disconnect the notification slot from the previous set of signals
1032 disconnect(this, SLOT(on_data_cleared()));
1033 disconnect(this, SLOT(on_data_received()));
1035 // Connect the currently used signals to our slot
1036 for (data::DecodeChannel &ch : channels_) {
1037 if (!ch.assigned_signal)
1040 const data::SignalBase *signal = ch.assigned_signal;
1041 connect(signal, SIGNAL(samples_cleared()),
1042 this, SLOT(on_data_cleared()));
1043 connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
1044 this, SLOT(on_data_received()));
1048 void DecodeSignal::create_new_segment()
1050 // Create logic mux segment if we're recreating the muxed data
1051 if (logic_mux_data_invalid_) {
1052 const double samplerate =
1053 (current_segment_) ? current_segment_->samplerate : 0;
1055 logic_mux_segment_ = make_shared<LogicSegment>(*logic_mux_data_,
1056 logic_mux_unit_size_, samplerate);
1057 logic_mux_data_->push_segment(logic_mux_segment_);
1060 // Create annotation segment
1061 segments_.emplace_back(DecodeSegment());
1062 current_segment_ = &(segments_.back());
1064 // TODO Currently we assume there's only one sample rate
1065 current_segment_->samplerate = segments_.front().samplerate;
1067 // Add annotation classes
1068 for (const shared_ptr<decode::Decoder> &dec : stack_) {
1070 const srd_decoder *const decc = dec->decoder();
1071 assert(dec->decoder());
1073 // Add a row for the decoder if it doesn't have a row list
1074 if (!decc->annotation_rows)
1075 (current_segment_->annotation_rows)[Row(decc)] = decode::RowData();
1077 // Add the decoder rows
1078 for (const GSList *l = decc->annotation_rows; l; l = l->next) {
1079 const srd_decoder_annotation_row *const ann_row =
1080 (srd_decoder_annotation_row *)l->data;
1083 const Row row(decc, ann_row);
1085 // Add a new empty row data object
1086 (current_segment_->annotation_rows)[row] = decode::RowData();
1091 void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal)
1094 assert(decode_signal);
1096 DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1099 lock_guard<mutex> lock(ds->output_mutex_);
1103 assert(pdata->pdo->di);
1104 const srd_decoder *const decc = pdata->pdo->di->decoder;
1106 assert(ds->current_segment_);
1108 const srd_proto_data_annotation *const pda =
1109 (const srd_proto_data_annotation*)pdata->data;
1112 auto row_iter = ds->current_segment_->annotation_rows.end();
1114 // Try looking up the sub-row of this class
1115 const auto format = pda->ann_class;
1116 const auto r = ds->class_rows_.find(make_pair(decc, format));
1117 if (r != ds->class_rows_.end())
1118 row_iter = ds->current_segment_->annotation_rows.find((*r).second);
1120 // Failing that, use the decoder as a key
1121 row_iter = ds->current_segment_->annotation_rows.find(Row(decc));
1124 if (row_iter == ds->current_segment_->annotation_rows.end()) {
1125 qDebug() << "Unexpected annotation: decoder = " << decc <<
1126 ", format = " << format;
1131 // Add the annotation
1132 (*row_iter).second.emplace_annotation(pdata);
1135 void DecodeSignal::on_capture_state_changed(int state)
1137 // If a new acquisition was started, we need to start decoding from scratch
1138 if (state == Session::Running) {
1139 logic_mux_data_invalid_ = true;
1144 void DecodeSignal::on_data_cleared()
1149 void DecodeSignal::on_data_received()
1151 if (!logic_mux_thread_.joinable())
1154 logic_mux_cond_.notify_one();