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/>.
21 #include <forward_list>
27 #include "logicsegment.hpp"
28 #include "decodesignal.hpp"
29 #include "signaldata.hpp"
31 #include <pv/data/decode/decoder.hpp>
32 #include <pv/data/decode/row.hpp>
33 #include <pv/globalsettings.hpp>
34 #include <pv/session.hpp>
36 using std::forward_list;
37 using std::lock_guard;
38 using std::make_shared;
40 using std::out_of_range;
41 using std::shared_ptr;
42 using std::unique_lock;
43 using pv::data::decode::AnnotationClass;
44 using pv::data::decode::DecodeChannel;
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 stack_config_changed_(true),
60 current_segment_id_(0)
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, bool restart_decode)
80 // Set name if this decoder is the first in the list or the name is unchanged
81 const srd_decoder* prev_dec = stack_.empty() ? nullptr : stack_.back()->get_srd_decoder();
82 const QString prev_dec_name = prev_dec ? QString::fromUtf8(prev_dec->name) : QString();
84 if ((stack_.empty()) || ((stack_.size() > 0) && (name() == prev_dec_name)))
85 set_name(QString::fromUtf8(decoder->name));
87 const shared_ptr<Decoder> dec = make_shared<Decoder>(decoder);
88 stack_.push_back(dec);
90 // Include the newly created decode channels in the channel lists
91 update_channel_list();
93 stack_config_changed_ = true;
94 auto_assign_signals(dec);
95 commit_decoder_channels();
97 decoder_stacked((void*)dec.get());
103 void DecodeSignal::remove_decoder(int index)
106 assert(index < (int)stack_.size());
108 // Find the decoder in the stack
109 auto iter = stack_.begin();
110 for (int i = 0; i < index; i++, iter++)
111 assert(iter != stack_.end());
113 decoder_removed(iter->get());
115 // Delete the element
118 // Update channels and decoded data
119 stack_config_changed_ = true;
120 update_channel_list();
124 bool DecodeSignal::toggle_decoder_visibility(int index)
126 auto iter = stack_.cbegin();
127 for (int i = 0; i < index; i++, iter++)
128 assert(iter != stack_.end());
130 shared_ptr<Decoder> dec = *iter;
132 // Toggle decoder visibility
135 state = !dec->visible();
136 dec->set_visible(state);
142 void DecodeSignal::reset_decode(bool shutting_down)
144 if (stack_config_changed_ || shutting_down)
147 terminate_srd_session();
149 if (decode_thread_.joinable()) {
150 decode_interrupt_ = true;
151 decode_input_cond_.notify_one();
152 decode_thread_.join();
155 if (logic_mux_thread_.joinable()) {
156 logic_mux_interrupt_ = true;
157 logic_mux_cond_.notify_one();
158 logic_mux_thread_.join();
161 resume_decode(); // Make sure the decode thread isn't blocked by pausing
163 current_segment_id_ = 0;
166 logic_mux_data_.reset();
167 logic_mux_data_invalid_ = true;
169 if (!error_message_.isEmpty()) {
170 error_message_ = QString();
171 // TODO Emulate noquote()
172 qDebug().nospace() << name() << ": Error cleared";
178 void DecodeSignal::begin_decode()
180 if (decode_thread_.joinable()) {
181 decode_interrupt_ = true;
182 decode_input_cond_.notify_one();
183 decode_thread_.join();
186 if (logic_mux_thread_.joinable()) {
187 logic_mux_interrupt_ = true;
188 logic_mux_cond_.notify_one();
189 logic_mux_thread_.join();
194 if (stack_.size() == 0) {
195 set_error_message(tr("No decoders"));
199 assert(channels_.size() > 0);
201 if (get_assigned_signal_count() == 0) {
202 set_error_message(tr("There are no channels assigned to this decoder"));
206 // Make sure that all assigned channels still provide logic data
207 // (can happen when a converted signal was assigned but the
208 // conversion removed in the meanwhile)
209 for (decode::DecodeChannel& ch : channels_)
210 if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr))
211 ch.assigned_signal = nullptr;
213 // Check that all decoders have the required channels
214 for (const shared_ptr<Decoder>& dec : stack_)
215 if (!dec->have_required_channels()) {
216 set_error_message(tr("One or more required channels "
217 "have not been specified"));
221 // Free the logic data and its segment(s) if it needs to be updated
222 if (logic_mux_data_invalid_)
223 logic_mux_data_.reset();
225 if (!logic_mux_data_) {
226 const uint32_t ch_count = get_assigned_signal_count();
227 logic_mux_unit_size_ = (ch_count + 7) / 8;
228 logic_mux_data_ = make_shared<Logic>(ch_count);
231 // Receive notifications when new sample data is available
232 connect_input_notifiers();
234 if (get_input_segment_count() == 0) {
235 set_error_message(tr("No input data"));
239 // Make sure the logic output data is complete and up-to-date
240 logic_mux_interrupt_ = false;
241 logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
243 // Decode the muxed logic data
244 decode_interrupt_ = false;
245 decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
248 void DecodeSignal::pause_decode()
250 decode_paused_ = true;
253 void DecodeSignal::resume_decode()
255 // Manual unlocking is done before notifying, to avoid waking up the
256 // waiting thread only to block again (see notify_one for details)
257 decode_pause_mutex_.unlock();
258 decode_pause_cond_.notify_one();
259 decode_paused_ = false;
262 bool DecodeSignal::is_paused() const
264 return decode_paused_;
267 QString DecodeSignal::error_message() const
269 lock_guard<mutex> lock(output_mutex_);
270 return error_message_;
273 const vector<decode::DecodeChannel> DecodeSignal::get_channels() const
278 void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
280 bool new_assignment = false;
282 // Try to auto-select channels that don't have signals assigned yet
283 for (decode::DecodeChannel& ch : channels_) {
284 // If a decoder is given, auto-assign only its channels
285 if (dec && (ch.decoder_ != dec))
288 if (ch.assigned_signal)
291 QString ch_name = ch.name.toLower();
292 ch_name = ch_name.replace(QRegExp("[-_.]"), " ");
294 shared_ptr<data::SignalBase> match;
295 for (const shared_ptr<data::SignalBase>& s : session_.signalbases()) {
299 QString s_name = s->name().toLower();
300 s_name = s_name.replace(QRegExp("[-_.]"), " ");
302 if (s->logic_data() &&
303 ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
307 // Only replace an existing match if it matches more characters
308 int old_unmatched = ch_name.length() - match->name().length();
309 int new_unmatched = ch_name.length() - s->name().length();
310 if (abs(new_unmatched) < abs(old_unmatched))
317 ch.assigned_signal = match.get();
318 new_assignment = true;
322 if (new_assignment) {
323 logic_mux_data_invalid_ = true;
324 stack_config_changed_ = true;
325 commit_decoder_channels();
330 void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
332 for (decode::DecodeChannel& ch : channels_)
333 if (ch.id == channel_id) {
334 ch.assigned_signal = signal;
335 logic_mux_data_invalid_ = true;
338 stack_config_changed_ = true;
339 commit_decoder_channels();
344 int DecodeSignal::get_assigned_signal_count() const
346 // Count all channels that have a signal assigned to them
347 return count_if(channels_.begin(), channels_.end(),
348 [](decode::DecodeChannel ch) { return ch.assigned_signal; });
351 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
353 for (decode::DecodeChannel& ch : channels_)
354 if (ch.id == channel_id)
355 ch.initial_pin_state = init_state;
357 stack_config_changed_ = true;
362 double DecodeSignal::samplerate() const
366 // TODO For now, we simply return the first samplerate that we have
367 if (segments_.size() > 0)
368 result = segments_.front().samplerate;
373 const pv::util::Timestamp DecodeSignal::start_time() const
375 pv::util::Timestamp result;
377 // TODO For now, we simply return the first start time that we have
378 if (segments_.size() > 0)
379 result = segments_.front().start_time;
384 int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const
386 // The working sample count is the highest sample number for
387 // which all used signals have data available, so go through all
388 // channels and use the lowest overall sample count of the segment
390 int64_t count = std::numeric_limits<int64_t>::max();
391 bool no_signals_assigned = true;
393 for (const decode::DecodeChannel& ch : channels_)
394 if (ch.assigned_signal) {
395 no_signals_assigned = false;
397 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
398 if (!logic_data || logic_data->logic_segments().empty())
402 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
403 count = min(count, (int64_t)segment->get_sample_count());
404 } catch (out_of_range&) {
409 return (no_signals_assigned ? 0 : count);
412 int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id,
413 bool include_processing) const
415 lock_guard<mutex> decode_lock(output_mutex_);
419 if (segment_id >= segments_.size())
422 if (include_processing)
423 result = segments_[segment_id].samples_decoded_incl;
425 result = segments_[segment_id].samples_decoded_excl;
430 vector<Row*> DecodeSignal::get_rows(bool visible_only)
434 for (const shared_ptr<Decoder>& dec : stack_) {
436 if (visible_only && !dec->visible())
439 for (Row* row : dec->get_rows())
446 vector<const Row*> DecodeSignal::get_rows(bool visible_only) const
448 vector<const Row*> rows;
450 for (const shared_ptr<Decoder>& dec : stack_) {
452 if (visible_only && !dec->visible())
455 for (const Row* row : dec->get_rows())
463 uint64_t DecodeSignal::get_annotation_count(const Row* row, uint32_t segment_id) const
465 if (segment_id >= segments_.size())
468 const DecodeSegment* segment = &(segments_.at(segment_id));
470 auto row_it = segment->annotation_rows.find(row);
473 if (row_it == segment->annotation_rows.end())
476 rd = &(row_it->second);
478 return rd->get_annotation_count();
481 void DecodeSignal::get_annotation_subset(deque<const Annotation*> &dest,
482 const Row* row, uint32_t segment_id, uint64_t start_sample,
483 uint64_t end_sample) const
485 lock_guard<mutex> lock(output_mutex_);
487 if (segment_id >= segments_.size())
490 const DecodeSegment* segment = &(segments_.at(segment_id));
492 auto row_it = segment->annotation_rows.find(row);
495 if (row_it == segment->annotation_rows.end())
498 rd = &(row_it->second);
500 rd->get_annotation_subset(dest, start_sample, end_sample);
503 void DecodeSignal::get_annotation_subset(deque<const Annotation*> &dest,
504 uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const
506 for (const Row* row : get_rows())
507 get_annotation_subset(dest, row, segment_id, start_sample, end_sample);
510 uint32_t DecodeSignal::get_binary_data_chunk_count(uint32_t segment_id,
511 const Decoder* dec, uint32_t bin_class_id) const
513 if (segments_.size() == 0)
517 const DecodeSegment *segment = &(segments_.at(segment_id));
519 for (const DecodeBinaryClass& bc : segment->binary_classes)
520 if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
521 return bc.chunks.size();
522 } catch (out_of_range&) {
529 void DecodeSignal::get_binary_data_chunk(uint32_t segment_id,
530 const Decoder* dec, uint32_t bin_class_id, uint32_t chunk_id,
531 const vector<uint8_t> **dest, uint64_t *size)
534 const DecodeSegment *segment = &(segments_.at(segment_id));
536 for (const DecodeBinaryClass& bc : segment->binary_classes)
537 if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id)) {
538 if (dest) *dest = &(bc.chunks.at(chunk_id).data);
539 if (size) *size = bc.chunks.at(chunk_id).data.size();
542 } catch (out_of_range&) {
547 void DecodeSignal::get_merged_binary_data_chunks_by_sample(uint32_t segment_id,
548 const Decoder* dec, uint32_t bin_class_id, uint64_t start_sample,
549 uint64_t end_sample, vector<uint8_t> *dest) const
551 assert(dest != nullptr);
554 const DecodeSegment *segment = &(segments_.at(segment_id));
556 const DecodeBinaryClass* bin_class = nullptr;
557 for (const DecodeBinaryClass& bc : segment->binary_classes)
558 if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
561 // Determine overall size before copying to resize dest vector only once
563 uint64_t matches = 0;
564 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks)
565 if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) {
566 size += chunk.data.size();
572 uint64_t matches2 = 0;
573 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks)
574 if ((chunk.sample >= start_sample) && (chunk.sample < end_sample)) {
575 memcpy(dest->data() + offset, chunk.data.data(), chunk.data.size());
576 offset += chunk.data.size();
579 // Make sure we don't overwrite memory if the array grew in the meanwhile
580 if (matches2 == matches)
583 } catch (out_of_range&) {
588 void DecodeSignal::get_merged_binary_data_chunks_by_offset(uint32_t segment_id,
589 const Decoder* dec, uint32_t bin_class_id, uint64_t start, uint64_t end,
590 vector<uint8_t> *dest) const
592 assert(dest != nullptr);
595 const DecodeSegment *segment = &(segments_.at(segment_id));
597 const DecodeBinaryClass* bin_class = nullptr;
598 for (const DecodeBinaryClass& bc : segment->binary_classes)
599 if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
602 // Determine overall size before copying to resize dest vector only once
605 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks) {
607 size += chunk.data.size();
608 offset += chunk.data.size();
615 uint64_t dest_offset = 0;
616 for (const DecodeBinaryDataChunk& chunk : bin_class->chunks) {
617 if (offset >= start) {
618 memcpy(dest->data() + dest_offset, chunk.data.data(), chunk.data.size());
619 dest_offset += chunk.data.size();
621 offset += chunk.data.size();
625 } catch (out_of_range&) {
630 const DecodeBinaryClass* DecodeSignal::get_binary_data_class(uint32_t segment_id,
631 const Decoder* dec, uint32_t bin_class_id) const
634 const DecodeSegment *segment = &(segments_.at(segment_id));
636 for (const DecodeBinaryClass& bc : segment->binary_classes)
637 if ((bc.decoder == dec) && (bc.info->bin_class_id == bin_class_id))
639 } catch (out_of_range&) {
646 void DecodeSignal::save_settings(QSettings &settings) const
648 SignalBase::save_settings(settings);
650 settings.setValue("decoders", (int)(stack_.size()));
652 // Save decoder stack
654 for (const shared_ptr<Decoder>& decoder : stack_) {
655 settings.beginGroup("decoder" + QString::number(decoder_idx++));
657 settings.setValue("id", decoder->get_srd_decoder()->id);
658 settings.setValue("visible", decoder->visible());
660 // Save decoder options
661 const map<string, GVariant*>& options = decoder->options();
663 settings.setValue("options", (int)options.size());
665 // Note: Decoder::options() returns only the options
666 // that differ from the default. See binding::Decoder::getter()
668 for (auto& option : options) {
669 settings.beginGroup("option" + QString::number(i));
670 settings.setValue("name", QString::fromStdString(option.first));
671 GlobalSettings::store_gvariant(settings, option.second);
676 // Save row properties
678 for (const Row* row : decoder->get_rows()) {
679 settings.beginGroup("row" + QString::number(i));
680 settings.setValue("visible", row->visible());
685 // Save class properties
687 for (const AnnotationClass* ann_class : decoder->ann_classes()) {
688 settings.beginGroup("ann_class" + QString::number(i));
689 settings.setValue("visible", ann_class->visible);
697 // Save channel mapping
698 settings.setValue("channels", (int)channels_.size());
700 for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
701 auto channel = find_if(channels_.begin(), channels_.end(),
702 [&](decode::DecodeChannel ch) { return ch.id == channel_id; });
704 if (channel == channels_.end()) {
705 qDebug() << "ERROR: Gap in channel index:" << channel_id;
709 settings.beginGroup("channel" + QString::number(channel_id));
711 settings.setValue("name", channel->name); // Useful for debugging
712 settings.setValue("initial_pin_state", channel->initial_pin_state);
714 if (channel->assigned_signal)
715 settings.setValue("assigned_signal_name", channel->assigned_signal->name());
721 void DecodeSignal::restore_settings(QSettings &settings)
723 SignalBase::restore_settings(settings);
725 // Restore decoder stack
726 GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
728 int decoders = settings.value("decoders").toInt();
730 for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
731 settings.beginGroup("decoder" + QString::number(decoder_idx));
733 QString id = settings.value("id").toString();
735 for (GSList *entry = dec_list; entry; entry = entry->next) {
736 const srd_decoder *dec = (srd_decoder*)entry->data;
740 if (QString::fromUtf8(dec->id) == id) {
741 shared_ptr<Decoder> decoder = make_shared<Decoder>(dec);
743 stack_.push_back(decoder);
744 decoder->set_visible(settings.value("visible", true).toBool());
746 // Restore decoder options that differ from their default
747 int options = settings.value("options").toInt();
749 for (int i = 0; i < options; i++) {
750 settings.beginGroup("option" + QString::number(i));
751 QString name = settings.value("name").toString();
752 GVariant *value = GlobalSettings::restore_gvariant(settings);
753 decoder->set_option(name.toUtf8(), value);
757 // Include the newly created decode channels in the channel lists
758 update_channel_list();
760 // Restore row properties
762 for (Row* row : decoder->get_rows()) {
763 settings.beginGroup("row" + QString::number(i));
764 row->set_visible(settings.value("visible", true).toBool());
769 // Restore class properties
771 for (AnnotationClass* ann_class : decoder->ann_classes()) {
772 settings.beginGroup("ann_class" + QString::number(i));
773 ann_class->visible = settings.value("visible", true).toBool();
786 // Restore channel mapping
787 unsigned int channels = settings.value("channels").toInt();
789 const unordered_set< shared_ptr<data::SignalBase> > signalbases =
790 session_.signalbases();
792 for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
793 auto channel = find_if(channels_.begin(), channels_.end(),
794 [&](decode::DecodeChannel ch) { return ch.id == channel_id; });
796 if (channel == channels_.end()) {
797 qDebug() << "ERROR: Non-existant channel index:" << channel_id;
801 settings.beginGroup("channel" + QString::number(channel_id));
803 QString assigned_signal_name = settings.value("assigned_signal_name").toString();
805 for (const shared_ptr<data::SignalBase>& signal : signalbases)
806 if (signal->name() == assigned_signal_name)
807 channel->assigned_signal = signal.get();
809 channel->initial_pin_state = settings.value("initial_pin_state").toInt();
814 // Update the internal structures
815 stack_config_changed_ = true;
816 update_channel_list();
817 commit_decoder_channels();
822 void DecodeSignal::set_error_message(QString msg)
824 error_message_ = msg;
825 // TODO Emulate noquote()
826 qDebug().nospace() << name() << ": " << msg;
829 uint32_t DecodeSignal::get_input_segment_count() const
831 uint64_t count = std::numeric_limits<uint64_t>::max();
832 bool no_signals_assigned = true;
834 for (const decode::DecodeChannel& ch : channels_)
835 if (ch.assigned_signal) {
836 no_signals_assigned = false;
838 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
839 if (!logic_data || logic_data->logic_segments().empty())
842 // Find the min value of all segment counts
843 if ((uint64_t)(logic_data->logic_segments().size()) < count)
844 count = logic_data->logic_segments().size();
847 return (no_signals_assigned ? 0 : count);
850 uint32_t DecodeSignal::get_input_samplerate(uint32_t segment_id) const
852 double samplerate = 0;
854 for (const decode::DecodeChannel& ch : channels_)
855 if (ch.assigned_signal) {
856 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
857 if (!logic_data || logic_data->logic_segments().empty())
861 const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
862 samplerate = segment->samplerate();
863 } catch (out_of_range&) {
872 Decoder* DecodeSignal::get_decoder_by_instance(const srd_decoder *const srd_dec)
874 for (shared_ptr<Decoder>& d : stack_)
875 if (d->get_srd_decoder() == srd_dec)
881 void DecodeSignal::update_channel_list()
883 vector<decode::DecodeChannel> prev_channels = channels_;
888 // Copy existing entries, create new as needed
889 for (shared_ptr<Decoder>& decoder : stack_) {
890 const srd_decoder* srd_dec = decoder->get_srd_decoder();
893 // Mandatory channels
894 for (l = srd_dec->channels; l; l = l->next) {
895 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
896 bool ch_added = false;
898 // Copy but update ID if this channel was in the list before
899 for (decode::DecodeChannel& ch : prev_channels)
900 if (ch.pdch_ == pdch) {
902 channels_.push_back(ch);
908 // Create new entry without a mapped signal
909 decode::DecodeChannel ch = {id++, 0, false, nullptr,
910 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
911 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
912 channels_.push_back(ch);
917 for (l = srd_dec->opt_channels; l; l = l->next) {
918 const struct srd_channel *const pdch = (struct srd_channel *)l->data;
919 bool ch_added = false;
921 // Copy but update ID if this channel was in the list before
922 for (decode::DecodeChannel& ch : prev_channels)
923 if (ch.pdch_ == pdch) {
925 channels_.push_back(ch);
931 // Create new entry without a mapped signal
932 decode::DecodeChannel ch = {id++, 0, true, nullptr,
933 QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
934 SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
935 channels_.push_back(ch);
940 // Invalidate the logic output data if the channel assignment changed
941 if (prev_channels.size() != channels_.size()) {
942 // The number of channels changed, there's definitely a difference
943 logic_mux_data_invalid_ = true;
945 // Same number but assignment may still differ, so compare all channels
946 for (size_t i = 0; i < channels_.size(); i++) {
947 const decode::DecodeChannel& p_ch = prev_channels[i];
948 const decode::DecodeChannel& ch = channels_[i];
950 if ((p_ch.pdch_ != ch.pdch_) ||
951 (p_ch.assigned_signal != ch.assigned_signal)) {
952 logic_mux_data_invalid_ = true;
962 void DecodeSignal::commit_decoder_channels()
964 // Submit channel list to every decoder, containing only the relevant channels
965 for (shared_ptr<Decoder> dec : stack_) {
966 vector<decode::DecodeChannel*> channel_list;
968 for (decode::DecodeChannel& ch : channels_)
969 if (ch.decoder_ == dec)
970 channel_list.push_back(&ch);
972 dec->set_channels(channel_list);
975 // Channel bit IDs must be in sync with the channel's apperance in channels_
977 for (decode::DecodeChannel& ch : channels_)
978 if (ch.assigned_signal)
982 void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end)
984 // Enforce end to be greater than start
988 // Fetch the channel segments and their data
989 vector<shared_ptr<LogicSegment> > segments;
990 vector<const uint8_t*> signal_data;
991 vector<uint8_t> signal_in_bytepos;
992 vector<uint8_t> signal_in_bitpos;
994 for (decode::DecodeChannel& ch : channels_)
995 if (ch.assigned_signal) {
996 const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
998 shared_ptr<LogicSegment> segment;
1000 segment = logic_data->logic_segments().at(segment_id);
1001 } catch (out_of_range&) {
1002 qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \
1003 << "has no logic segment" << segment_id;
1006 segments.push_back(segment);
1008 uint8_t* data = new uint8_t[(end - start) * segment->unit_size()];
1009 segment->get_samples(start, end, data);
1010 signal_data.push_back(data);
1012 const int bitpos = ch.assigned_signal->logic_bit_index();
1013 signal_in_bytepos.push_back(bitpos / 8);
1014 signal_in_bitpos.push_back(bitpos % 8);
1018 shared_ptr<LogicSegment> output_segment;
1020 output_segment = logic_mux_data_->logic_segments().at(segment_id);
1021 } catch (out_of_range&) {
1022 qDebug() << "Muxer error for" << name() << ": no logic mux segment" \
1023 << segment_id << "in mux_logic_samples(), mux segments size is" \
1024 << logic_mux_data_->logic_segments().size();
1028 // Perform the muxing of signal data into the output data
1029 uint8_t* output = new uint8_t[(end - start) * output_segment->unit_size()];
1030 unsigned int signal_count = signal_data.size();
1032 for (int64_t sample_cnt = 0; !logic_mux_interrupt_ && (sample_cnt < (end - start));
1036 uint8_t bytepos = 0;
1038 const int out_sample_pos = sample_cnt * output_segment->unit_size();
1039 for (unsigned int i = 0; i < output_segment->unit_size(); i++)
1040 output[out_sample_pos + i] = 0;
1042 for (unsigned int i = 0; i < signal_count; i++) {
1043 const int in_sample_pos = sample_cnt * segments[i]->unit_size();
1044 const uint8_t in_sample = 1 &
1045 ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i]));
1047 const uint8_t out_sample = output[out_sample_pos + bytepos];
1049 output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos);
1059 output_segment->append_payload(output, (end - start) * output_segment->unit_size());
1062 for (const uint8_t* data : signal_data)
1066 void DecodeSignal::logic_mux_proc()
1068 uint32_t segment_id = 0;
1070 assert(logic_mux_data_);
1072 // Create initial logic mux segment
1073 shared_ptr<LogicSegment> output_segment =
1074 make_shared<LogicSegment>(*logic_mux_data_, segment_id,
1075 logic_mux_unit_size_, 0);
1076 logic_mux_data_->push_segment(output_segment);
1078 output_segment->set_samplerate(get_input_samplerate(0));
1081 const uint64_t input_sample_count = get_working_sample_count(segment_id);
1082 const uint64_t output_sample_count = output_segment->get_sample_count();
1084 const uint64_t samples_to_process =
1085 (input_sample_count > output_sample_count) ?
1086 (input_sample_count - output_sample_count) : 0;
1088 // Process the samples if necessary...
1089 if (samples_to_process > 0) {
1090 const uint64_t unit_size = output_segment->unit_size();
1091 const uint64_t chunk_sample_count = DecodeChunkLength / unit_size;
1093 uint64_t processed_samples = 0;
1095 const uint64_t start_sample = output_sample_count + processed_samples;
1096 const uint64_t sample_count =
1097 min(samples_to_process - processed_samples, chunk_sample_count);
1099 mux_logic_samples(segment_id, start_sample, start_sample + sample_count);
1100 processed_samples += sample_count;
1102 // ...and process the newly muxed logic data
1103 decode_input_cond_.notify_one();
1104 } while (!logic_mux_interrupt_ && (processed_samples < samples_to_process));
1107 if (samples_to_process == 0) {
1108 // TODO Optimize this by caching the input segment count and only
1109 // querying it when the cached value was reached
1110 if (segment_id < get_input_segment_count() - 1) {
1111 // Process next segment
1115 make_shared<LogicSegment>(*logic_mux_data_, segment_id,
1116 logic_mux_unit_size_, 0);
1117 logic_mux_data_->push_segment(output_segment);
1119 output_segment->set_samplerate(get_input_samplerate(segment_id));
1122 // All segments have been processed
1123 logic_mux_data_invalid_ = false;
1125 // Wait for more input
1126 unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
1127 logic_mux_cond_.wait(logic_mux_lock);
1131 } while (!logic_mux_interrupt_);
1134 void DecodeSignal::decode_data(
1135 const int64_t abs_start_samplenum, const int64_t sample_count,
1136 const shared_ptr<LogicSegment> input_segment)
1138 const int64_t unit_size = input_segment->unit_size();
1139 const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
1141 for (int64_t i = abs_start_samplenum;
1142 error_message_.isEmpty() && !decode_interrupt_ &&
1143 (i < (abs_start_samplenum + sample_count));
1144 i += chunk_sample_count) {
1146 const int64_t chunk_end = min(i + chunk_sample_count,
1147 abs_start_samplenum + sample_count);
1150 lock_guard<mutex> lock(output_mutex_);
1151 // Update the sample count showing the samples including currently processed ones
1152 segments_.at(current_segment_id_).samples_decoded_incl = chunk_end;
1155 int64_t data_size = (chunk_end - i) * unit_size;
1156 uint8_t* chunk = new uint8_t[data_size];
1157 input_segment->get_samples(i, chunk_end, chunk);
1159 if (srd_session_send(srd_session_, i, chunk_end, chunk,
1160 data_size, unit_size) != SRD_OK)
1161 set_error_message(tr("Decoder reported an error"));
1166 lock_guard<mutex> lock(output_mutex_);
1167 // Now that all samples are processed, the exclusive sample count catches up
1168 segments_.at(current_segment_id_).samples_decoded_excl = chunk_end;
1171 // Notify the frontend that we processed some data and
1172 // possibly have new annotations as well
1175 if (decode_paused_) {
1176 unique_lock<mutex> pause_wait_lock(decode_pause_mutex_);
1177 decode_pause_cond_.wait(pause_wait_lock);
1182 void DecodeSignal::decode_proc()
1184 current_segment_id_ = 0;
1186 // If there is no input data available yet, wait until it is or we're interrupted
1187 if (logic_mux_data_->logic_segments().size() == 0) {
1188 unique_lock<mutex> input_wait_lock(input_mutex_);
1189 decode_input_cond_.wait(input_wait_lock);
1192 if (decode_interrupt_)
1195 shared_ptr<LogicSegment> input_segment = logic_mux_data_->logic_segments().front();
1196 assert(input_segment);
1198 // Create the initial segment and set its sample rate so that we can pass it to SRD
1199 create_decode_segment();
1200 segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
1201 segments_.at(current_segment_id_).start_time = input_segment->start_time();
1203 start_srd_session();
1205 uint64_t sample_count = 0;
1206 uint64_t abs_start_samplenum = 0;
1208 // Keep processing new samples until we exhaust the input data
1210 lock_guard<mutex> input_lock(input_mutex_);
1211 sample_count = input_segment->get_sample_count() - abs_start_samplenum;
1213 if (sample_count > 0) {
1214 decode_data(abs_start_samplenum, sample_count, input_segment);
1215 abs_start_samplenum += sample_count;
1217 } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
1219 if (error_message_.isEmpty() && !decode_interrupt_ && sample_count == 0) {
1220 if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) {
1221 // Process next segment
1222 current_segment_id_++;
1225 input_segment = logic_mux_data_->logic_segments().at(current_segment_id_);
1226 } catch (out_of_range&) {
1227 qDebug() << "Decode error for" << name() << ": no logic mux segment" \
1228 << current_segment_id_ << "in decode_proc(), mux segments size is" \
1229 << logic_mux_data_->logic_segments().size();
1232 abs_start_samplenum = 0;
1234 // Create the next segment and set its metadata
1235 create_decode_segment();
1236 segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
1237 segments_.at(current_segment_id_).start_time = input_segment->start_time();
1239 // Reset decoder state but keep the decoder stack intact
1240 terminate_srd_session();
1242 // All segments have been processed
1245 // Wait for new input data or an interrupt was requested
1246 unique_lock<mutex> input_wait_lock(input_mutex_);
1247 decode_input_cond_.wait(input_wait_lock);
1250 } while (error_message_.isEmpty() && !decode_interrupt_);
1252 // Potentially reap decoders when the application no longer is
1253 // interested in their (pending) results.
1254 if (decode_interrupt_)
1255 terminate_srd_session();
1258 void DecodeSignal::start_srd_session()
1260 // If there were stack changes, the session has been destroyed by now, so if
1261 // it hasn't been destroyed, we can just reset and re-use it
1263 // When a decoder stack was created before, re-use it
1264 // for the next stream of input data, after terminating
1265 // potentially still executing operations, and resetting
1266 // internal state. Skip the rather expensive (teardown
1267 // and) construction of another decoder stack.
1269 // TODO Reduce redundancy, use a common code path for
1270 // the meta/start sequence?
1271 terminate_srd_session();
1273 // Metadata is cleared also, so re-set it
1274 uint64_t samplerate = 0;
1275 if (segments_.size() > 0)
1276 samplerate = segments_.at(current_segment_id_).samplerate;
1278 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1279 g_variant_new_uint64(samplerate));
1280 for (const shared_ptr<Decoder>& dec : stack_)
1281 dec->apply_all_options();
1282 srd_session_start(srd_session_);
1287 // Create the session
1288 srd_session_new(&srd_session_);
1289 assert(srd_session_);
1291 // Create the decoders
1292 srd_decoder_inst *prev_di = nullptr;
1293 for (const shared_ptr<Decoder>& dec : stack_) {
1294 srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_);
1297 set_error_message(tr("Failed to create decoder instance"));
1298 srd_session_destroy(srd_session_);
1299 srd_session_ = nullptr;
1304 srd_inst_stack(srd_session_, prev_di, di);
1309 // Start the session
1310 if (segments_.size() > 0)
1311 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1312 g_variant_new_uint64(segments_.at(current_segment_id_).samplerate));
1314 srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
1315 DecodeSignal::annotation_callback, this);
1317 srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_BINARY,
1318 DecodeSignal::binary_callback, this);
1320 srd_session_start(srd_session_);
1322 // We just recreated the srd session, so all stack changes are applied now
1323 stack_config_changed_ = false;
1326 void DecodeSignal::terminate_srd_session()
1328 // Call the "terminate and reset" routine for the decoder stack
1329 // (if available). This does not harm those stacks which already
1330 // have completed their operation, and reduces response time for
1331 // those stacks which still are processing data while the
1332 // application no longer wants them to.
1334 srd_session_terminate_reset(srd_session_);
1336 // Metadata is cleared also, so re-set it
1337 uint64_t samplerate = 0;
1338 if (segments_.size() > 0)
1339 samplerate = segments_.at(current_segment_id_).samplerate;
1341 srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
1342 g_variant_new_uint64(samplerate));
1343 for (const shared_ptr<Decoder>& dec : stack_)
1344 dec->apply_all_options();
1348 void DecodeSignal::stop_srd_session()
1351 // Destroy the session
1352 srd_session_destroy(srd_session_);
1353 srd_session_ = nullptr;
1355 // Mark the decoder instances as non-existant since they were deleted
1356 for (const shared_ptr<Decoder>& dec : stack_)
1357 dec->invalidate_decoder_inst();
1361 void DecodeSignal::connect_input_notifiers()
1363 // Disconnect the notification slot from the previous set of signals
1364 disconnect(this, SLOT(on_data_cleared()));
1365 disconnect(this, SLOT(on_data_received()));
1367 // Connect the currently used signals to our slot
1368 for (decode::DecodeChannel& ch : channels_) {
1369 if (!ch.assigned_signal)
1372 const data::SignalBase *signal = ch.assigned_signal;
1373 connect(signal, SIGNAL(samples_cleared()),
1374 this, SLOT(on_data_cleared()));
1375 connect(signal, SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)),
1376 this, SLOT(on_data_received()));
1380 void DecodeSignal::create_decode_segment()
1382 // Create annotation segment
1383 segments_.emplace_back(DecodeSegment());
1385 // Add annotation classes
1386 for (const shared_ptr<Decoder>& dec : stack_)
1387 for (Row* row : dec->get_rows())
1388 segments_.back().annotation_rows.emplace(row, RowData(row));
1390 // Prepare our binary output classes
1391 for (const shared_ptr<Decoder>& dec : stack_) {
1392 uint32_t n = dec->get_binary_class_count();
1394 for (uint32_t i = 0; i < n; i++)
1395 segments_.back().binary_classes.push_back(
1396 {dec.get(), dec->get_binary_class(i), deque<DecodeBinaryDataChunk>()});
1400 void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal)
1403 assert(decode_signal);
1405 DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1408 if (ds->decode_interrupt_)
1411 lock_guard<mutex> lock(ds->output_mutex_);
1413 // Get the decoder and the annotation data
1415 assert(pdata->pdo->di);
1416 const srd_decoder *const srd_dec = pdata->pdo->di->decoder;
1419 const srd_proto_data_annotation *const pda = (const srd_proto_data_annotation*)pdata->data;
1423 Decoder* dec = ds->get_decoder_by_instance(srd_dec);
1426 AnnotationClass* ann_class = dec->get_ann_class_by_id(pda->ann_class);
1428 qWarning() << "Decoder" << ds->display_name() << "wanted to add annotation" <<
1429 "with class ID" << pda->ann_class << "but there are only" <<
1430 dec->ann_classes().size() << "known classes";
1434 const Row* row = ann_class->row;
1437 row = dec->get_row_by_id(0);
1439 // Add the annotation
1440 ds->segments_[ds->current_segment_id_].annotation_rows.at(row).emplace_annotation(pdata);
1443 void DecodeSignal::binary_callback(srd_proto_data *pdata, void *decode_signal)
1446 assert(decode_signal);
1448 DecodeSignal *const ds = (DecodeSignal*)decode_signal;
1451 if (ds->decode_interrupt_)
1454 // Get the decoder and the binary data
1456 assert(pdata->pdo->di);
1457 const srd_decoder *const srd_dec = pdata->pdo->di->decoder;
1460 const srd_proto_data_binary *const pdb = (const srd_proto_data_binary*)pdata->data;
1463 // Find the matching DecodeBinaryClass
1464 DecodeSegment* segment = &(ds->segments_.at(ds->current_segment_id_));
1466 DecodeBinaryClass* bin_class = nullptr;
1467 for (DecodeBinaryClass& bc : segment->binary_classes)
1468 if ((bc.decoder->get_srd_decoder() == srd_dec) &&
1469 (bc.info->bin_class_id == (uint32_t)pdb->bin_class))
1473 qWarning() << "Could not find valid DecodeBinaryClass in segment" <<
1474 ds->current_segment_id_ << "for binary class ID" << pdb->bin_class <<
1475 ", segment only knows" << segment->binary_classes.size() << "classes";
1479 // Add the data chunk
1480 bin_class->chunks.emplace_back();
1481 DecodeBinaryDataChunk* chunk = &(bin_class->chunks.back());
1483 chunk->sample = pdata->start_sample;
1484 chunk->data.resize(pdb->size);
1485 memcpy(chunk->data.data(), pdb->data, pdb->size);
1487 Decoder* dec = ds->get_decoder_by_instance(srd_dec);
1489 ds->new_binary_data(ds->current_segment_id_, (void*)dec, pdb->bin_class);
1492 void DecodeSignal::on_capture_state_changed(int state)
1494 // If a new acquisition was started, we need to start decoding from scratch
1495 if (state == Session::Running) {
1496 logic_mux_data_invalid_ = true;
1501 void DecodeSignal::on_data_cleared()
1506 void DecodeSignal::on_data_received()
1508 // If we detected a lack of input data when trying to start decoding,
1509 // we have set an error message. Only try again if we now have data
1511 if ((!error_message_.isEmpty()) && (get_input_segment_count() == 0))
1514 if (!logic_mux_thread_.joinable())
1517 logic_mux_cond_.notify_one();