#include <limits>
+#include <QDebug>
+
#include "logic.hpp"
#include "logicsegment.hpp"
#include "decodesignal.hpp"
#include <pv/binding/decoder.hpp>
#include <pv/data/decode/decoder.hpp>
#include <pv/data/decode/row.hpp>
-#include <pv/data/decoderstack.hpp>
+#include <pv/globalsettings.hpp>
#include <pv/session.hpp>
+using std::lock_guard;
+using std::make_pair;
using std::make_shared;
using std::min;
using std::shared_ptr;
+using std::unique_lock;
+using pv::data::decode::Annotation;
using pv::data::decode::Decoder;
using pv::data::decode::Row;
namespace pv {
namespace data {
-DecodeSignal::DecodeSignal(shared_ptr<pv::data::DecoderStack> decoder_stack,
- const unordered_set< shared_ptr<data::SignalBase> > &all_signals) :
+const double DecodeSignal::DecodeMargin = 1.0;
+const double DecodeSignal::DecodeThreshold = 0.2;
+const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024;
+
+
+DecodeSignal::DecodeSignal(pv::Session &session) :
SignalBase(nullptr, SignalBase::DecodeChannel),
- decoder_stack_(decoder_stack),
- all_signals_(all_signals)
+ session_(session),
+ srd_session_(nullptr),
+ logic_mux_data_invalid_(false),
+ start_time_(0),
+ samplerate_(0),
+ samples_decoded_(0),
+ frame_complete_(false)
{
- set_name(QString::fromUtf8(decoder_stack_->stack().front()->decoder()->name));
-
- update_channel_list();
- auto_assign_signals();
+ connect(&session_, SIGNAL(capture_state_changed(int)),
+ this, SLOT(on_capture_state_changed(int)));
- connect(decoder_stack_.get(), SIGNAL(new_annotations()),
- this, SLOT(on_new_annotations()));
+ set_name(tr("Empty decoder signal"));
}
DecodeSignal::~DecodeSignal()
{
+ reset_decode();
}
-bool DecodeSignal::is_decode_signal() const
+const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const
{
- return true;
+ return stack_;
}
-shared_ptr<pv::data::DecoderStack> DecodeSignal::decoder_stack() const
+void DecodeSignal::stack_decoder(const srd_decoder *decoder)
{
- return decoder_stack_;
-}
+ assert(decoder);
+ const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder);
-const list< shared_ptr<Decoder> >& DecodeSignal::decoder_stack_list() const
-{
- return decoder_stack_->stack();
-}
+ stack_.push_back(dec);
-void DecodeSignal::stack_decoder(srd_decoder *decoder)
-{
- assert(decoder);
- assert(decoder_stack);
- decoder_stack_->push(make_shared<data::decode::Decoder>(decoder));
+ // Set name if this decoder is the first in the list
+ if (stack_.size() == 1)
+ set_name(QString::fromUtf8(decoder->name));
- // Include the newly created decode channels in the channel list
+ // Include the newly created decode channels in the channel lists
update_channel_list();
- auto_assign_signals();
- decoder_stack_->begin_decode();
+ auto_assign_signals(dec);
+ commit_decoder_channels();
+ begin_decode();
}
void DecodeSignal::remove_decoder(int index)
{
- decoder_stack_->remove(index);
+ assert(index >= 0);
+ assert(index < (int)stack_.size());
+
+ // Find the decoder in the stack
+ auto iter = stack_.begin();
+ for (int i = 0; i < index; i++, iter++)
+ assert(iter != stack_.end());
+
+ // Delete the element
+ stack_.erase(iter);
+
+ // Update channels and decoded data
update_channel_list();
- decoder_stack_->begin_decode();
+ begin_decode();
}
bool DecodeSignal::toggle_decoder_visibility(int index)
{
- const list< shared_ptr<Decoder> > stack(decoder_stack_->stack());
-
- auto iter = stack.cbegin();
+ auto iter = stack_.cbegin();
for (int i = 0; i < index; i++, iter++)
- assert(iter != stack.end());
+ assert(iter != stack_.end());
shared_ptr<Decoder> dec = *iter;
return state;
}
+void DecodeSignal::reset_decode()
+{
+ if (decode_thread_.joinable()) {
+ decode_interrupt_ = true;
+ decode_input_cond_.notify_one();
+ decode_thread_.join();
+ }
+
+ if (logic_mux_thread_.joinable()) {
+ logic_mux_interrupt_ = true;
+ logic_mux_cond_.notify_one();
+ logic_mux_thread_.join();
+ }
+
+ stop_srd_session();
+
+ frame_complete_ = false;
+ samples_decoded_ = 0;
+ error_message_ = QString();
+
+ rows_.clear();
+ class_rows_.clear();
+
+ logic_mux_data_.reset();
+ logic_mux_data_invalid_ = true;
+}
+
void DecodeSignal::begin_decode()
{
- decoder_stack_->begin_decode();
+ if (decode_thread_.joinable()) {
+ decode_interrupt_ = true;
+ decode_input_cond_.notify_one();
+ decode_thread_.join();
+ }
+
+ if (logic_mux_thread_.joinable()) {
+ logic_mux_interrupt_ = true;
+ logic_mux_cond_.notify_one();
+ logic_mux_thread_.join();
+ }
+
+ reset_decode();
+
+ if (stack_.size() == 0) {
+ error_message_ = tr("No decoders");
+ return;
+ }
+
+ assert(channels_.size() > 0);
+
+ if (get_assigned_signal_count() == 0) {
+ error_message_ = tr("There are no channels assigned to this decoder");
+ return;
+ }
+
+ // Make sure that all assigned channels still provide logic data
+ // (can happen when a converted signal was assigned but the
+ // conversion removed in the meanwhile)
+ for (data::DecodeChannel &ch : channels_)
+ if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr))
+ ch.assigned_signal = nullptr;
+
+ // Check that all decoders have the required channels
+ for (const shared_ptr<decode::Decoder> &dec : stack_)
+ if (!dec->have_required_channels()) {
+ error_message_ = tr("One or more required channels "
+ "have not been specified");
+ return;
+ }
+
+ // Add annotation classes
+ for (const shared_ptr<decode::Decoder> &dec : stack_) {
+ assert(dec);
+ const srd_decoder *const decc = dec->decoder();
+ assert(dec->decoder());
+
+ // Add a row for the decoder if it doesn't have a row list
+ if (!decc->annotation_rows)
+ rows_[Row(decc)] = decode::RowData();
+
+ // Add the decoder rows
+ for (const GSList *l = decc->annotation_rows; l; l = l->next) {
+ const srd_decoder_annotation_row *const ann_row =
+ (srd_decoder_annotation_row *)l->data;
+ assert(ann_row);
+
+ const Row row(decc, ann_row);
+
+ // Add a new empty row data object
+ rows_[row] = decode::RowData();
+
+ // Map out all the classes
+ for (const GSList *ll = ann_row->ann_classes;
+ ll; ll = ll->next)
+ class_rows_[make_pair(decc,
+ GPOINTER_TO_INT(ll->data))] = row;
+ }
+ }
+
+ // Free the logic data and its segment(s) if it needs to be updated
+ if (logic_mux_data_invalid_)
+ logic_mux_data_.reset();
+
+ if (!logic_mux_data_) {
+ const int64_t ch_count = get_assigned_signal_count();
+ const int64_t unit_size = (ch_count + 7) / 8;
+ logic_mux_data_ = make_shared<Logic>(ch_count);
+ segment_ = make_shared<LogicSegment>(*logic_mux_data_, unit_size, samplerate_);
+ logic_mux_data_->push_segment(segment_);
+ }
+
+ // Make sure the logic output data is complete and up-to-date
+ logic_mux_interrupt_ = false;
+ logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
+
+ // Decode the muxed logic data
+ decode_interrupt_ = false;
+ decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
+
+ // Receive notifications when new sample data is available
+ connect_input_notifiers();
}
QString DecodeSignal::error_message() const
{
- return decoder_stack_->error_message();
+ lock_guard<mutex> lock(output_mutex_);
+ return error_message_;
}
-const list<data::DecodeChannel> DecodeSignal::get_channels() const
+const vector<data::DecodeChannel> DecodeSignal::get_channels() const
{
return channels_;
}
-void DecodeSignal::auto_assign_signals()
+void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
{
+ bool new_assignment = false;
+
// Try to auto-select channels that don't have signals assigned yet
for (data::DecodeChannel &ch : channels_) {
+ // If a decoder is given, auto-assign only its channels
+ if (dec && (ch.decoder_ != dec))
+ continue;
+
if (ch.assigned_signal)
continue;
- for (shared_ptr<data::SignalBase> s : all_signals_)
- if (s->logic_data() && (ch.name.toLower().contains(s->name().toLower())))
+ for (shared_ptr<data::SignalBase> s : session_.signalbases()) {
+ const QString ch_name = ch.name.toLower();
+ const QString s_name = s->name().toLower();
+
+ if (s->logic_data() &&
+ ((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
ch.assigned_signal = s.get();
+ new_assignment = true;
+ }
+ }
+ }
+
+ if (new_assignment) {
+ logic_mux_data_invalid_ = true;
+ commit_decoder_channels();
+ channels_updated();
}
}
void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
{
for (data::DecodeChannel &ch : channels_)
- if (ch.id == channel_id)
+ if (ch.id == channel_id) {
ch.assigned_signal = signal;
+ logic_mux_data_invalid_ = true;
+ }
+ commit_decoder_channels();
channels_updated();
+ begin_decode();
+}
- decoder_stack_->begin_decode();
+int DecodeSignal::get_assigned_signal_count() const
+{
+ // Count all channels that have a signal assigned to them
+ return count_if(channels_.begin(), channels_.end(),
+ [](data::DecodeChannel ch) { return ch.assigned_signal; });
}
void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
channels_updated();
- decoder_stack_->begin_decode();
+ begin_decode();
}
double DecodeSignal::samplerate() const
{
- return decoder_stack_->samplerate();
+ return samplerate_;
}
const pv::util::Timestamp& DecodeSignal::start_time() const
{
- return decoder_stack_->start_time();
+ return start_time_;
}
int64_t DecodeSignal::get_working_sample_count() const
int64_t DecodeSignal::get_decoded_sample_count() const
{
- return decoder_stack_->samples_decoded();
+ lock_guard<mutex> decode_lock(output_mutex_);
+ return samples_decoded_;
}
vector<Row> DecodeSignal::visible_rows() const
{
- return decoder_stack_->get_visible_rows();
+ lock_guard<mutex> lock(output_mutex_);
+
+ vector<Row> rows;
+
+ for (const shared_ptr<decode::Decoder> &dec : stack_) {
+ assert(dec);
+ if (!dec->shown())
+ continue;
+
+ const srd_decoder *const decc = dec->decoder();
+ assert(dec->decoder());
+
+ // Add a row for the decoder if it doesn't have a row list
+ if (!decc->annotation_rows)
+ rows.emplace_back(decc);
+
+ // Add the decoder rows
+ for (const GSList *l = decc->annotation_rows; l; l = l->next) {
+ const srd_decoder_annotation_row *const ann_row =
+ (srd_decoder_annotation_row *)l->data;
+ assert(ann_row);
+ rows.emplace_back(decc, ann_row);
+ }
+ }
+
+ return rows;
}
void DecodeSignal::get_annotation_subset(
const decode::Row &row, uint64_t start_sample,
uint64_t end_sample) const
{
- return decoder_stack_->get_annotation_subset(dest, row,
- start_sample, end_sample);
+ lock_guard<mutex> lock(output_mutex_);
+
+ const auto iter = rows_.find(row);
+ if (iter != rows_.end())
+ (*iter).second.get_annotation_subset(dest,
+ start_sample, end_sample);
+}
+
+void DecodeSignal::save_settings(QSettings &settings) const
+{
+ SignalBase::save_settings(settings);
+
+ settings.setValue("decoders", (int)(stack_.size()));
+
+ // Save decoder stack
+ int decoder_idx = 0;
+ for (shared_ptr<decode::Decoder> decoder : stack_) {
+ settings.beginGroup("decoder" + QString::number(decoder_idx++));
+
+ settings.setValue("id", decoder->decoder()->id);
+
+ // Save decoder options
+ const map<string, GVariant*>& options = decoder->options();
+
+ settings.setValue("options", (int)options.size());
+
+ // Note: decode::Decoder::options() returns only the options
+ // that differ from the default. See binding::Decoder::getter()
+ int i = 0;
+ for (auto option : options) {
+ settings.beginGroup("option" + QString::number(i));
+ settings.setValue("name", QString::fromStdString(option.first));
+ GlobalSettings::store_gvariant(settings, option.second);
+ settings.endGroup();
+ i++;
+ }
+
+ settings.endGroup();
+ }
+
+ // Save channel mapping
+ settings.setValue("channels", (int)channels_.size());
+
+ for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
+ auto channel = find_if(channels_.begin(), channels_.end(),
+ [&](data::DecodeChannel ch) { return ch.id == channel_id; });
+
+ if (channel == channels_.end()) {
+ qDebug() << "ERROR: Gap in channel index:" << channel_id;
+ continue;
+ }
+
+ settings.beginGroup("channel" + QString::number(channel_id));
+
+ settings.setValue("name", channel->name); // Useful for debugging
+ settings.setValue("initial_pin_state", channel->initial_pin_state);
+
+ if (channel->assigned_signal)
+ settings.setValue("assigned_signal_name", channel->assigned_signal->name());
+
+ settings.endGroup();
+ }
+}
+
+void DecodeSignal::restore_settings(QSettings &settings)
+{
+ SignalBase::restore_settings(settings);
+
+ // Restore decoder stack
+ GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
+
+ int decoders = settings.value("decoders").toInt();
+
+ for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
+ settings.beginGroup("decoder" + QString::number(decoder_idx));
+
+ QString id = settings.value("id").toString();
+
+ for (GSList *entry = dec_list; entry; entry = entry->next) {
+ const srd_decoder *dec = (srd_decoder*)entry->data;
+ if (!dec)
+ continue;
+
+ if (QString::fromUtf8(dec->id) == id) {
+ shared_ptr<decode::Decoder> decoder =
+ make_shared<decode::Decoder>(dec);
+
+ stack_.push_back(decoder);
+
+ // Restore decoder options that differ from their default
+ int options = settings.value("options").toInt();
+
+ for (int i = 0; i < options; i++) {
+ settings.beginGroup("option" + QString::number(i));
+ QString name = settings.value("name").toString();
+ GVariant *value = GlobalSettings::restore_gvariant(settings);
+ decoder->set_option(name.toUtf8(), value);
+ settings.endGroup();
+ }
+
+ // Include the newly created decode channels in the channel lists
+ update_channel_list();
+ commit_decoder_channels();
+ break;
+ }
+ }
+
+ settings.endGroup();
+ channels_updated();
+ }
+
+ // Restore channel mapping
+ unsigned int channels = settings.value("channels").toInt();
+
+ const unordered_set< shared_ptr<data::SignalBase> > signalbases =
+ session_.signalbases();
+
+ for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
+ auto channel = find_if(channels_.begin(), channels_.end(),
+ [&](data::DecodeChannel ch) { return ch.id == channel_id; });
+
+ if (channel == channels_.end()) {
+ qDebug() << "ERROR: Non-existant channel index:" << channel_id;
+ continue;
+ }
+
+ settings.beginGroup("channel" + QString::number(channel_id));
+
+ QString assigned_signal_name = settings.value("assigned_signal_name").toString();
+
+ for (shared_ptr<data::SignalBase> signal : signalbases)
+ if (signal->name() == assigned_signal_name)
+ channel->assigned_signal = signal.get();
+
+ channel->initial_pin_state = settings.value("initial_pin_state").toInt();
+
+ settings.endGroup();
+ }
+
+ begin_decode();
}
void DecodeSignal::update_channel_list()
{
- list<data::DecodeChannel> prev_channels = channels_;
+ vector<data::DecodeChannel> prev_channels = channels_;
channels_.clear();
uint16_t id = 0;
// Copy existing entries, create new as needed
- for (shared_ptr<Decoder> decoder : decoder_stack_->stack()) {
+ for (shared_ptr<Decoder> decoder : stack_) {
const srd_decoder* srd_d = decoder->decoder();
const GSList *l;
bool ch_added = false;
// Copy but update ID if this channel was in the list before
- for (data::DecodeChannel ch : prev_channels)
+ for (data::DecodeChannel &ch : prev_channels)
if (ch.pdch_ == pdch) {
ch.id = id++;
channels_.push_back(ch);
bool ch_added = false;
// Copy but update ID if this channel was in the list before
- for (data::DecodeChannel ch : prev_channels)
+ for (data::DecodeChannel &ch : prev_channels)
if (ch.pdch_ == pdch) {
ch.id = id++;
channels_.push_back(ch);
}
}
+ // Invalidate the logic output data if the channel assignment changed
+ if (prev_channels.size() != channels_.size()) {
+ // The number of channels changed, there's definitely a difference
+ logic_mux_data_invalid_ = true;
+ } else {
+ // Same number but assignment may still differ, so compare all channels
+ for (size_t i = 0; i < channels_.size(); i++) {
+ const data::DecodeChannel &p_ch = prev_channels[i];
+ const data::DecodeChannel &ch = channels_[i];
+
+ if ((p_ch.pdch_ != ch.pdch_) ||
+ (p_ch.assigned_signal != ch.assigned_signal)) {
+ logic_mux_data_invalid_ = true;
+ break;
+ }
+ }
+
+ }
+
channels_updated();
}
-void DecodeSignal::on_new_annotations()
+void DecodeSignal::commit_decoder_channels()
+{
+ // Submit channel list to every decoder, containing only the relevant channels
+ for (shared_ptr<decode::Decoder> dec : stack_) {
+ vector<data::DecodeChannel*> channel_list;
+
+ for (data::DecodeChannel &ch : channels_)
+ if (ch.decoder_ == dec)
+ channel_list.push_back(&ch);
+
+ dec->set_channels(channel_list);
+ }
+}
+
+void DecodeSignal::mux_logic_samples(const int64_t start, const int64_t end)
+{
+ // Enforce end to be greater than start
+ if (end <= start)
+ return;
+
+ // Fetch all segments and their data
+ // TODO Currently, we assume only a single segment exists
+ vector<shared_ptr<LogicSegment> > segments;
+ vector<const uint8_t*> signal_data;
+ vector<uint8_t> signal_in_bytepos;
+ vector<uint8_t> signal_in_bitpos;
+
+ for (data::DecodeChannel &ch : channels_)
+ if (ch.assigned_signal) {
+ const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
+ const shared_ptr<LogicSegment> segment = logic_data->logic_segments().front();
+ segments.push_back(segment);
+
+ uint8_t* data = new uint8_t[(end - start) * segment->unit_size()];
+ segment->get_samples(start, end, data);
+ signal_data.push_back(data);
+
+ const int bitpos = ch.assigned_signal->logic_bit_index();
+ signal_in_bytepos.push_back(bitpos / 8);
+ signal_in_bitpos.push_back(bitpos % 8);
+ }
+
+ // Perform the muxing of signal data into the output data
+ uint8_t* output = new uint8_t[(end - start) * segment_->unit_size()];
+ unsigned int signal_count = signal_data.size();
+
+ for (int64_t sample_cnt = 0; sample_cnt < (end - start); sample_cnt++) {
+ int bitpos = 0;
+ uint8_t bytepos = 0;
+
+ const int out_sample_pos = sample_cnt * segment_->unit_size();
+ for (unsigned int i = 0; i < segment_->unit_size(); i++)
+ output[out_sample_pos + i] = 0;
+
+ for (unsigned int i = 0; i < signal_count; i++) {
+ const int in_sample_pos = sample_cnt * segments[i]->unit_size();
+ const uint8_t in_sample = 1 &
+ ((signal_data[i][in_sample_pos + signal_in_bytepos[i]]) >> (signal_in_bitpos[i]));
+
+ const uint8_t out_sample = output[out_sample_pos + bytepos];
+
+ output[out_sample_pos + bytepos] = out_sample | (in_sample << bitpos);
+
+ bitpos++;
+ if (bitpos > 7) {
+ bitpos = 0;
+ bytepos++;
+ }
+ }
+ }
+
+ segment_->append_payload(output, (end - start) * segment_->unit_size());
+ delete[] output;
+
+ for (const uint8_t* data : signal_data)
+ delete[] data;
+}
+
+void DecodeSignal::logic_mux_proc()
+{
+ do {
+ const uint64_t input_sample_count = get_working_sample_count();
+ const uint64_t output_sample_count = segment_->get_sample_count();
+
+ const uint64_t samples_to_process =
+ (input_sample_count > output_sample_count) ?
+ (input_sample_count - output_sample_count) : 0;
+
+ // Process the samples if necessary...
+ if (samples_to_process > 0) {
+ const uint64_t unit_size = segment_->unit_size();
+ const uint64_t chunk_sample_count = DecodeChunkLength / unit_size;
+
+ uint64_t processed_samples = 0;
+ do {
+ const uint64_t start_sample = output_sample_count + processed_samples;
+ const uint64_t sample_count =
+ min(samples_to_process - processed_samples, chunk_sample_count);
+
+ mux_logic_samples(start_sample, start_sample + sample_count);
+ processed_samples += sample_count;
+
+ // ...and process the newly muxed logic data
+ decode_input_cond_.notify_one();
+ } while (processed_samples < samples_to_process);
+ }
+
+ if (samples_to_process == 0) {
+ // Wait for more input
+ unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
+ logic_mux_cond_.wait(logic_mux_lock);
+ }
+ } while (!logic_mux_interrupt_);
+
+ // No more input data and session is stopped, let the decode thread
+ // process any pending data, terminate and release the global SRD mutex
+ // in order to let other decoders run
+ decode_input_cond_.notify_one();
+}
+
+void DecodeSignal::query_input_metadata()
+{
+ // Update the samplerate and start time because we cannot start
+ // the libsrd session without the current samplerate
+
+ // TODO Currently we assume all channels have the same sample rate
+ // and start time
+ bool samplerate_valid = false;
+ data::DecodeChannel *any_channel;
+ shared_ptr<Logic> logic_data;
+
+ do {
+ any_channel = &(*find_if(channels_.begin(), channels_.end(),
+ [](data::DecodeChannel ch) { return ch.assigned_signal; }));
+
+ logic_data = any_channel->assigned_signal->logic_data();
+
+ if (!logic_data) {
+ // Wait until input data is available or an interrupt was requested
+ unique_lock<mutex> input_wait_lock(input_mutex_);
+ decode_input_cond_.wait(input_wait_lock);
+ }
+ } while (!logic_data && !decode_interrupt_);
+
+ if (decode_interrupt_)
+ return;
+
+ do {
+ if (!logic_data->logic_segments().empty()) {
+ shared_ptr<LogicSegment> first_segment =
+ any_channel->assigned_signal->logic_data()->logic_segments().front();
+ start_time_ = first_segment->start_time();
+ samplerate_ = first_segment->samplerate();
+ if (samplerate_ > 0)
+ samplerate_valid = true;
+ }
+
+ if (!samplerate_valid) {
+ // Wait until input data is available or an interrupt was requested
+ unique_lock<mutex> input_wait_lock(input_mutex_);
+ decode_input_cond_.wait(input_wait_lock);
+ }
+ } while (!samplerate_valid && !decode_interrupt_);
+}
+
+void DecodeSignal::decode_data(
+ const int64_t abs_start_samplenum, const int64_t sample_count)
+{
+ const int64_t unit_size = segment_->unit_size();
+ const int64_t chunk_sample_count = DecodeChunkLength / unit_size;
+
+ for (int64_t i = abs_start_samplenum;
+ !decode_interrupt_ && (i < (abs_start_samplenum + sample_count));
+ i += chunk_sample_count) {
+
+ const int64_t chunk_end = min(i + chunk_sample_count,
+ abs_start_samplenum + sample_count);
+
+ int64_t data_size = (chunk_end - i) * unit_size;
+ uint8_t* chunk = new uint8_t[data_size];
+ segment_->get_samples(i, chunk_end, chunk);
+
+ if (srd_session_send(srd_session_, i, chunk_end, chunk,
+ data_size, unit_size) != SRD_OK) {
+ error_message_ = tr("Decoder reported an error");
+ delete[] chunk;
+ break;
+ }
+
+ delete[] chunk;
+
+ {
+ lock_guard<mutex> lock(output_mutex_);
+ samples_decoded_ = chunk_end;
+ }
+
+ // Notify the frontend that we processed some data and
+ // possibly have new annotations as well
+ new_annotations();
+ }
+}
+
+void DecodeSignal::decode_proc()
+{
+ query_input_metadata();
+
+ if (decode_interrupt_)
+ return;
+
+ start_srd_session();
+
+ uint64_t sample_count;
+ uint64_t abs_start_samplenum = 0;
+ do {
+ // Keep processing new samples until we exhaust the input data
+ do {
+ lock_guard<mutex> input_lock(input_mutex_);
+ sample_count = segment_->get_sample_count() - abs_start_samplenum;
+
+ if (sample_count > 0) {
+ decode_data(abs_start_samplenum, sample_count);
+ abs_start_samplenum += sample_count;
+ }
+ } while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
+
+ if (error_message_.isEmpty() && !decode_interrupt_) {
+ if (sample_count == 0)
+ decode_finished();
+
+ // Wait for new input data or an interrupt was requested
+ unique_lock<mutex> input_wait_lock(input_mutex_);
+ decode_input_cond_.wait(input_wait_lock);
+ }
+ } while (error_message_.isEmpty() && !decode_interrupt_);
+}
+
+void DecodeSignal::start_srd_session()
+{
+ if (srd_session_)
+ stop_srd_session();
+
+ // Create the session
+ srd_session_new(&srd_session_);
+ assert(srd_session_);
+
+ // Create the decoders
+ srd_decoder_inst *prev_di = nullptr;
+ for (const shared_ptr<decode::Decoder> &dec : stack_) {
+ srd_decoder_inst *const di = dec->create_decoder_inst(srd_session_);
+
+ if (!di) {
+ error_message_ = tr("Failed to create decoder instance");
+ srd_session_destroy(srd_session_);
+ return;
+ }
+
+ if (prev_di)
+ srd_inst_stack(srd_session_, prev_di, di);
+
+ prev_di = di;
+ }
+
+ // Start the session
+ srd_session_metadata_set(srd_session_, SRD_CONF_SAMPLERATE,
+ g_variant_new_uint64(samplerate_));
+
+ srd_pd_output_callback_add(srd_session_, SRD_OUTPUT_ANN,
+ DecodeSignal::annotation_callback, this);
+
+ srd_session_start(srd_session_);
+}
+
+void DecodeSignal::stop_srd_session()
+{
+ if (srd_session_) {
+ // Destroy the session
+ srd_session_destroy(srd_session_);
+ srd_session_ = nullptr;
+ }
+}
+
+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 (data::DecodeChannel &ch : channels_) {
+ if (!ch.assigned_signal)
+ continue;
+
+ const data::SignalBase *signal = ch.assigned_signal;
+ connect(signal, SIGNAL(samples_cleared()),
+ this, SLOT(on_data_cleared()));
+ connect(signal, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
+ this, SLOT(on_data_received()));
+ }
+}
+
+void DecodeSignal::annotation_callback(srd_proto_data *pdata, void *decode_signal)
+{
+ assert(pdata);
+ assert(decode_signal);
+
+ DecodeSignal *const ds = (DecodeSignal*)decode_signal;
+ assert(ds);
+
+ lock_guard<mutex> lock(ds->output_mutex_);
+
+ const decode::Annotation a(pdata);
+
+ // Find the row
+ assert(pdata->pdo);
+ assert(pdata->pdo->di);
+ const srd_decoder *const decc = pdata->pdo->di->decoder;
+ assert(decc);
+
+ auto row_iter = ds->rows_.end();
+
+ // Try looking up the sub-row of this class
+ const auto r = ds->class_rows_.find(make_pair(decc, a.format()));
+ if (r != ds->class_rows_.end())
+ row_iter = ds->rows_.find((*r).second);
+ else {
+ // Failing that, use the decoder as a key
+ row_iter = ds->rows_.find(Row(decc));
+ }
+
+ assert(row_iter != ds->rows_.end());
+ if (row_iter == ds->rows_.end()) {
+ qDebug() << "Unexpected annotation: decoder = " << decc <<
+ ", format = " << a.format();
+ assert(false);
+ return;
+ }
+
+ // Add the annotation
+ (*row_iter).second.push_annotation(a);
+}
+
+void DecodeSignal::on_capture_state_changed(int state)
+{
+ // If a new acquisition was started, we need to start decoding from scratch
+ if (state == Session::Running)
+ begin_decode();
+}
+
+void DecodeSignal::on_data_cleared()
+{
+ reset_decode();
+}
+
+void DecodeSignal::on_data_received()
{
- // Forward the signal to the frontend
- new_annotations();
+ if (!logic_mux_thread_.joinable())
+ begin_decode();
+ else
+ logic_mux_cond_.notify_one();
}
} // namespace data
projects / pulseview.git / blobdiff