]> sigrok.org Git - pulseview.git/blobdiff - pv/data/decodesignal.cpp
Initial support for SRD_OUTPUT_LOGIC
[pulseview.git] / pv / data / decodesignal.cpp
index 12077a96f5b766c14c5839196195585e0e745ca4..a3525922943a878b5d051fbdb724eb44a9f2100a 100644 (file)
@@ -33,6 +33,7 @@
 #include <pv/globalsettings.hpp>
 #include <pv/session.hpp>
 
+using std::dynamic_pointer_cast;
 using std::lock_guard;
 using std::make_shared;
 using std::min;
@@ -95,6 +96,7 @@ void DecodeSignal::stack_decoder(const srd_decoder *decoder, bool restart_decode
        stack_config_changed_ = true;
        auto_assign_signals(dec);
        commit_decoder_channels();
+       update_output_signals();
 
        decoder_stacked((void*)dec.get());
 
@@ -231,9 +233,6 @@ void DecodeSignal::begin_decode()
                logic_mux_data_ = make_shared<Logic>(ch_count);
        }
 
-       // Receive notifications when new sample data is available
-       connect_input_notifiers();
-
        if (get_input_segment_count() == 0)
                set_error_message(tr("No input data"));
 
@@ -274,6 +273,9 @@ void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
 {
        bool new_assignment = false;
 
+       // Disconnect all input signal notifications so we don't have duplicate connections
+       disconnect_input_notifiers();
+
        // Try to auto-select channels that don't have signals assigned yet
        for (decode::DecodeChannel& ch : channels_) {
                // If a decoder is given, auto-assign only its channels
@@ -308,13 +310,22 @@ void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
                        }
                }
 
-               if (match) {
+               // Prevent using a signal more than once as D1 would match e.g. D1 and D10
+               bool signal_not_already_used = true;
+               for (decode::DecodeChannel& ch : channels_)
+                       if (ch.assigned_signal && (ch.assigned_signal == match))
+                               signal_not_already_used = false;
+
+               if (match && signal_not_already_used) {
                        ch.assigned_signal = match;
                        new_assignment = true;
                }
        }
 
        if (new_assignment) {
+               // Receive notifications when new sample data is available
+               connect_input_notifiers();
+
                logic_mux_data_invalid_ = true;
                stack_config_changed_ = true;
                commit_decoder_channels();
@@ -324,12 +335,18 @@ void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
 
 void DecodeSignal::assign_signal(const uint16_t channel_id, shared_ptr<const SignalBase> signal)
 {
+       // Disconnect all input signal notifications so we don't have duplicate connections
+       disconnect_input_notifiers();
+
        for (decode::DecodeChannel& ch : channels_)
                if (ch.id == channel_id) {
                        ch.assigned_signal = signal;
                        logic_mux_data_invalid_ = true;
                }
 
+       // Receive notifications when new sample data is available
+       connect_input_notifiers();
+
        stack_config_changed_ = true;
        commit_decoder_channels();
        channels_updated();
@@ -343,6 +360,53 @@ int DecodeSignal::get_assigned_signal_count() const
                [](decode::DecodeChannel ch) { return ch.assigned_signal.get(); });
 }
 
+void DecodeSignal::update_output_signals()
+{
+       for (const shared_ptr<decode::Decoder>& dec : stack_) {
+               assert(dec);
+
+               if (dec->has_logic_output()) {
+                       const vector<decode::DecoderLogicOutputChannel> logic_channels =
+                               dec->logic_output_channels();
+
+                       // All signals of a decoder share the same LogicSegment, so it's
+                       // sufficient to check for the first channel only
+                       const decode::DecoderLogicOutputChannel& first_ch = logic_channels[0];
+
+                       bool ch_exists = false;
+                       for (const shared_ptr<SignalBase>& signal : output_signals_)
+                               if (signal->internal_name() == first_ch.id)
+                                       ch_exists = true;
+
+                       if (!ch_exists) {
+                               shared_ptr<Logic> logic_data = make_shared<Logic>(logic_channels.size());
+                               output_logic_[dec->get_srd_decoder()] = logic_data;
+
+                               shared_ptr<LogicSegment> logic_segment = make_shared<data::LogicSegment>(
+                                       *logic_data, 0, (logic_data->num_channels() + 7) / 8, first_ch.samplerate);
+                               logic_data->push_segment(logic_segment);
+
+                               uint index = 0;
+                               for (const decode::DecoderLogicOutputChannel& logic_ch : logic_channels) {
+                                       shared_ptr<data::SignalBase> signal =
+                                               make_shared<data::SignalBase>(nullptr, LogicChannel);
+                                       signal->set_internal_name(logic_ch.id);
+                                       signal->set_name(logic_ch.id);
+                                       signal->set_index(index);
+                                       signal->set_data(logic_data);
+                                       output_signals_.push_back(signal);
+                                       session_.add_generated_signal(signal);
+                                       index++;
+                               }
+                       }
+               }
+       }
+
+       // TODO Delete signals that no longer have a corresponding decoder (also from session)
+       // TODO Check whether all sample rates are the same as the session's
+       // TODO Set colors to the same as the decoder's background color
+}
+
 void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
 {
        for (decode::DecodeChannel& ch : channels_)
@@ -457,7 +521,6 @@ vector<const Row*> DecodeSignal::get_rows(bool visible_only) const
        return rows;
 }
 
-
 uint64_t DecodeSignal::get_annotation_count(const Row* row, uint32_t segment_id) const
 {
        if (segment_id >= segments_.size())
@@ -717,6 +780,8 @@ void DecodeSignal::save_settings(QSettings &settings) const
 
                settings.endGroup();
        }
+
+       // TODO Save logic output signal settings
 }
 
 void DecodeSignal::restore_settings(QSettings &settings)
@@ -815,10 +880,15 @@ void DecodeSignal::restore_settings(QSettings &settings)
                settings.endGroup();
        }
 
+       connect_input_notifiers();
+
        // Update the internal structures
        stack_config_changed_ = true;
        update_channel_list();
        commit_decoder_channels();
+       update_output_signals();
+
+       // TODO Restore logic output signal settings
 
        begin_decode();
 }
@@ -1009,7 +1079,6 @@ void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, c
                return;
 
        // Fetch the channel segments and their data
-       bool segment_missing = false;
        vector<shared_ptr<const LogicSegment> > segments;
        vector<const uint8_t*> signal_data;
        vector<uint8_t> signal_in_bytepos;
@@ -1020,19 +1089,17 @@ void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, c
                        const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
 
                        shared_ptr<const LogicSegment> segment;
-                       try {
+                       if (segment_id < logic_data->logic_segments().size()) {
                                segment = logic_data->logic_segments().at(segment_id)->get_shared_ptr();
-                       } catch (out_of_range&) {
+                       } else {
                                qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \
                                        << "has no logic segment" << segment_id;
                                logic_mux_interrupt_ = true;
                                return;
                        }
 
-                       if (!segment) {
-                               segment_missing = true;
-                               break;
-                       }
+                       if (!segment)
+                               return;
 
                        segments.push_back(segment);
 
@@ -1045,9 +1112,6 @@ void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, c
                        signal_in_bitpos.push_back(bitpos % 8);
                }
 
-       if (segment_missing)
-               return;
-
        shared_ptr<LogicSegment> output_segment;
        try {
                output_segment = logic_mux_data_->logic_segments().at(segment_id);
@@ -1164,6 +1228,7 @@ void DecodeSignal::logic_mux_proc()
                                        output_segment->set_complete();
 
                                if (segment_id < get_input_segment_count() - 1) {
+
                                        // Process next segment
                                        segment_id++;
 
@@ -1173,9 +1238,13 @@ void DecodeSignal::logic_mux_proc()
                                        logic_mux_data_->push_segment(output_segment);
 
                                        output_segment->set_samplerate(get_input_samplerate(segment_id));
+                               } else {
+                                       // Wait for more input data if we're processing the currently last segment
+                                       unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
+                                       logic_mux_cond_.wait(logic_mux_lock);
                                }
                        } else {
-                               // Wait for more input
+                               // Input segments aren't all complete yet but samples_to_process is 0, wait for more input data
                                unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
                                logic_mux_cond_.wait(logic_mux_lock);
                        }
@@ -1191,8 +1260,7 @@ void DecodeSignal::decode_data(
        const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
 
        for (int64_t i = abs_start_samplenum;
-               error_message_.isEmpty() && !decode_interrupt_ &&
-                       (i < (abs_start_samplenum + sample_count));
+               !decode_interrupt_ && (i < (abs_start_samplenum + sample_count));
                i += chunk_sample_count) {
 
                const int64_t chunk_end = min(i + chunk_sample_count,
@@ -1278,7 +1346,7 @@ void DecodeSignal::decode_proc()
 
                        // If the input segment is complete, we've exhausted this segment
                        if (input_segment->is_complete()) {
-                               if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) {
+                               if (current_segment_id_ < (logic_mux_data_->logic_segments().size() - 1)) {
                                        // Process next segment
                                        current_segment_id_++;
 
@@ -1302,20 +1370,21 @@ void DecodeSignal::decode_proc()
                                        terminate_srd_session();
                                } else {
                                        // All segments have been processed
-                                       decode_finished();
+                                       if (!decode_interrupt_)
+                                               decode_finished();
+
+                                       // Wait for more input data
+                                       unique_lock<mutex> input_wait_lock(input_mutex_);
+                                       decode_input_cond_.wait(input_wait_lock);
                                }
                        } else {
-                               // Wait for more input data
+                               // Input segment isn't complete yet but samples_to_process is 0, wait for more input data
                                unique_lock<mutex> input_wait_lock(input_mutex_);
                                decode_input_cond_.wait(input_wait_lock);
                        }
+
                }
        } while (!decode_interrupt_);
-
-       // Potentially reap decoders when the application no longer is
-       // interested in their (pending) results.
-       if (decode_interrupt_)
-               terminate_srd_session();
 }
 
 void DecodeSignal::start_srd_session()
@@ -1380,6 +1449,9 @@ void DecodeSignal::start_srd_session()
        srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_BINARY,
                DecodeSignal::binary_callback, this);
 
+       srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_LOGIC,
+               DecodeSignal::logic_output_callback, this);
+
        srd_session_start(srd_session_);
 
        // We just recreated the srd session, so all stack changes are applied now
@@ -1423,20 +1495,35 @@ void DecodeSignal::stop_srd_session()
 
 void DecodeSignal::connect_input_notifiers()
 {
-       // Disconnect the notification slot from the previous set of signals
-       disconnect(this, SLOT(on_data_cleared()));
-       disconnect(this, SLOT(on_data_received()));
-
        // Connect the currently used signals to our slot
        for (decode::DecodeChannel& ch : channels_) {
                if (!ch.assigned_signal)
                        continue;
+               const data::SignalBase *signal = ch.assigned_signal.get();
+
+               connect(signal, SIGNAL(samples_cleared()),
+                       this, SLOT(on_data_cleared()), Qt::UniqueConnection);
+               connect(signal, SIGNAL(samples_added(uint64_t, uint64_t, uint64_t)),
+                       this, SLOT(on_data_received()), Qt::UniqueConnection);
+
+               if (signal->logic_data())
+                       connect(signal->logic_data().get(), SIGNAL(segment_completed()),
+                               this, SLOT(on_input_segment_completed()), Qt::UniqueConnection);
+       }
+}
 
+void DecodeSignal::disconnect_input_notifiers()
+{
+       // Disconnect the notification slot from the previous set of signals
+       for (decode::DecodeChannel& ch : channels_) {
+               if (!ch.assigned_signal)
+                       continue;
                const data::SignalBase *signal = ch.assigned_signal.get();
-               connect(signal, &data::SignalBase::samples_cleared,
-                       this, &DecodeSignal::on_data_cleared);
-               connect(signal, &data::SignalBase::samples_added,
-                       this, &DecodeSignal::on_data_received);
+               disconnect(signal, nullptr, this, SLOT(on_data_cleared()));
+               disconnect(signal, nullptr, this, SLOT(on_data_received()));
+
+               if (signal->logic_data())
+                       disconnect(signal->logic_data().get(), nullptr, this, SLOT(on_input_segment_completed()));
        }
 }
 
@@ -1614,6 +1701,39 @@ void DecodeSignal::binary_callback(srd_proto_data *pdata, void *decode_signal)
        ds->new_binary_data(ds->current_segment_id_, (void*)dec, pdb->bin_class);
 }
 
+void DecodeSignal::logic_output_callback(srd_proto_data *pdata, void *decode_signal)
+{
+       assert(pdata);
+       assert(decode_signal);
+
+       DecodeSignal *const ds = (DecodeSignal*)decode_signal;
+       assert(ds);
+
+       if (ds->decode_interrupt_)
+               return;
+
+       lock_guard<mutex> lock(ds->output_mutex_);
+
+       assert(pdata->pdo);
+       assert(pdata->pdo->di);
+       const srd_decoder *const decc = pdata->pdo->di->decoder;
+       assert(decc);
+
+       const srd_proto_data_logic *const pdl = (const srd_proto_data_logic*)pdata->data;
+       assert(pdl);
+
+       shared_ptr<Logic> output_logic = ds->output_logic_.at(decc);
+       shared_ptr<LogicSegment> last_segment =
+               dynamic_pointer_cast<LogicSegment>(output_logic->segments().back());
+       assert(last_segment);
+
+       last_segment->append_subsignal_payload(pdl->logic_class, (void*)pdl->data, pdl->size);
+
+       qInfo() << "Received" << pdl->size << "bytes /" << pdl->size \
+               << "samples of logic output for class" << pdl->logic_class << "from decoder" \
+               << QString::fromUtf8(decc->name);
+}
+
 void DecodeSignal::on_capture_state_changed(int state)
 {
        // If a new acquisition was started, we need to start decoding from scratch
@@ -1631,17 +1751,29 @@ void DecodeSignal::on_data_cleared()
 void DecodeSignal::on_data_received()
 {
        // If we detected a lack of input data when trying to start decoding,
-       // we have set an error message. Only try again if we now have data
+       // we have set an error message. Bail out if we still don't have data
        // to work with
        if ((!error_message_.isEmpty()) && (get_input_segment_count() == 0))
                return;
 
+       if (!error_message_.isEmpty()) {
+               error_message_.clear();
+               // TODO Emulate noquote()
+               qDebug().nospace() << name() << ": Input data available, error cleared";
+       }
+
        if (!logic_mux_thread_.joinable())
                begin_decode();
        else
                logic_mux_cond_.notify_one();
 }
 
+void DecodeSignal::on_input_segment_completed()
+{
+       if (!logic_mux_thread_.joinable())
+               logic_mux_cond_.notify_one();
+}
+
 void DecodeSignal::on_annotation_visibility_changed()
 {
        annotation_visibility_changed();