mirror of git://sigrok.org/pulseview
1146 lines
31 KiB
C++
1146 lines
31 KiB
C++
/*
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* This file is part of the PulseView project.
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*
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* Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <limits>
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#include <QDebug>
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#include "logic.hpp"
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#include "logicsegment.hpp"
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#include "decodesignal.hpp"
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#include "signaldata.hpp"
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#include <pv/binding/decoder.hpp>
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#include <pv/data/decode/decoder.hpp>
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#include <pv/data/decode/row.hpp>
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#include <pv/globalsettings.hpp>
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#include <pv/session.hpp>
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using std::lock_guard;
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using std::make_pair;
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using std::make_shared;
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using std::min;
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using std::out_of_range;
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using std::shared_ptr;
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using std::unique_lock;
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using pv::data::decode::Annotation;
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using pv::data::decode::Decoder;
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using pv::data::decode::Row;
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namespace pv {
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namespace data {
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const double DecodeSignal::DecodeMargin = 1.0;
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const double DecodeSignal::DecodeThreshold = 0.2;
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const int64_t DecodeSignal::DecodeChunkLength = 256 * 1024;
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DecodeSignal::DecodeSignal(pv::Session &session) :
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SignalBase(nullptr, SignalBase::DecodeChannel),
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session_(session),
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srd_session_(nullptr),
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logic_mux_data_invalid_(false),
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current_segment_id_(0)
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{
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connect(&session_, SIGNAL(capture_state_changed(int)),
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this, SLOT(on_capture_state_changed(int)));
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}
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DecodeSignal::~DecodeSignal()
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{
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reset_decode();
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}
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const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const
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{
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return stack_;
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}
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void DecodeSignal::stack_decoder(const srd_decoder *decoder)
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{
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assert(decoder);
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const shared_ptr<Decoder> dec = make_shared<decode::Decoder>(decoder);
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stack_.push_back(dec);
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// Set name if this decoder is the first in the list
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if (stack_.size() == 1)
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set_name(QString::fromUtf8(decoder->name));
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// Include the newly created decode channels in the channel lists
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update_channel_list();
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auto_assign_signals(dec);
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commit_decoder_channels();
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begin_decode();
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}
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void DecodeSignal::remove_decoder(int index)
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{
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assert(index >= 0);
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assert(index < (int)stack_.size());
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// Find the decoder in the stack
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auto iter = stack_.begin();
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for (int i = 0; i < index; i++, iter++)
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assert(iter != stack_.end());
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// Delete the element
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stack_.erase(iter);
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// Update channels and decoded data
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update_channel_list();
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begin_decode();
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}
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bool DecodeSignal::toggle_decoder_visibility(int index)
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{
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auto iter = stack_.cbegin();
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for (int i = 0; i < index; i++, iter++)
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assert(iter != stack_.end());
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shared_ptr<Decoder> dec = *iter;
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// Toggle decoder visibility
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bool state = false;
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if (dec) {
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state = !dec->shown();
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dec->show(state);
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}
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return state;
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}
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void DecodeSignal::reset_decode()
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{
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if (decode_thread_.joinable()) {
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decode_interrupt_ = true;
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decode_input_cond_.notify_one();
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decode_thread_.join();
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}
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if (logic_mux_thread_.joinable()) {
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logic_mux_interrupt_ = true;
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logic_mux_cond_.notify_one();
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logic_mux_thread_.join();
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}
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stop_srd_session();
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class_rows_.clear();
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current_segment_id_ = 0;
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segments_.clear();
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logic_mux_data_.reset();
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logic_mux_data_invalid_ = true;
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error_message_ = QString();
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decode_reset();
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}
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void DecodeSignal::begin_decode()
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{
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if (decode_thread_.joinable()) {
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decode_interrupt_ = true;
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decode_input_cond_.notify_one();
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decode_thread_.join();
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}
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if (logic_mux_thread_.joinable()) {
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logic_mux_interrupt_ = true;
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logic_mux_cond_.notify_one();
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logic_mux_thread_.join();
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}
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reset_decode();
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if (stack_.size() == 0) {
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error_message_ = tr("No decoders");
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return;
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}
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assert(channels_.size() > 0);
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if (get_assigned_signal_count() == 0) {
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error_message_ = tr("There are no channels assigned to this decoder");
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return;
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}
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// Make sure that all assigned channels still provide logic data
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// (can happen when a converted signal was assigned but the
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// conversion removed in the meanwhile)
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for (data::DecodeChannel &ch : channels_)
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if (ch.assigned_signal && !(ch.assigned_signal->logic_data() != nullptr))
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ch.assigned_signal = nullptr;
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// Check that all decoders have the required channels
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for (const shared_ptr<decode::Decoder> &dec : stack_)
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if (!dec->have_required_channels()) {
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error_message_ = tr("One or more required channels "
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"have not been specified");
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return;
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}
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// Map out all the annotation classes
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for (const shared_ptr<decode::Decoder> &dec : stack_) {
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assert(dec);
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const srd_decoder *const decc = dec->decoder();
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assert(dec->decoder());
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for (const GSList *l = decc->annotation_rows; l; l = l->next) {
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const srd_decoder_annotation_row *const ann_row =
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(srd_decoder_annotation_row *)l->data;
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assert(ann_row);
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const Row row(decc, ann_row);
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for (const GSList *ll = ann_row->ann_classes;
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ll; ll = ll->next)
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class_rows_[make_pair(decc,
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GPOINTER_TO_INT(ll->data))] = row;
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}
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}
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// Free the logic data and its segment(s) if it needs to be updated
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if (logic_mux_data_invalid_)
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logic_mux_data_.reset();
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if (!logic_mux_data_) {
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const uint32_t ch_count = get_assigned_signal_count();
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logic_mux_unit_size_ = (ch_count + 7) / 8;
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logic_mux_data_ = make_shared<Logic>(ch_count);
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}
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// Receive notifications when new sample data is available
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connect_input_notifiers();
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if (get_input_segment_count() == 0) {
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error_message_ = tr("No input data");
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return;
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}
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// Make sure the logic output data is complete and up-to-date
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logic_mux_interrupt_ = false;
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logic_mux_thread_ = std::thread(&DecodeSignal::logic_mux_proc, this);
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// Decode the muxed logic data
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decode_interrupt_ = false;
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decode_thread_ = std::thread(&DecodeSignal::decode_proc, this);
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}
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QString DecodeSignal::error_message() const
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{
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lock_guard<mutex> lock(output_mutex_);
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return error_message_;
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}
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const vector<data::DecodeChannel> DecodeSignal::get_channels() const
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{
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return channels_;
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}
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void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
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{
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bool new_assignment = false;
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// Try to auto-select channels that don't have signals assigned yet
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for (data::DecodeChannel &ch : channels_) {
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// If a decoder is given, auto-assign only its channels
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if (dec && (ch.decoder_ != dec))
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continue;
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if (ch.assigned_signal)
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continue;
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for (shared_ptr<data::SignalBase> s : session_.signalbases()) {
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const QString ch_name = ch.name.toLower();
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const QString s_name = s->name().toLower();
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if (s->logic_data() &&
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((ch_name.contains(s_name)) || (s_name.contains(ch_name)))) {
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ch.assigned_signal = s.get();
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new_assignment = true;
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}
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}
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}
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if (new_assignment) {
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logic_mux_data_invalid_ = true;
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commit_decoder_channels();
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channels_updated();
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}
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}
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void DecodeSignal::assign_signal(const uint16_t channel_id, const SignalBase *signal)
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{
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for (data::DecodeChannel &ch : channels_)
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if (ch.id == channel_id) {
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ch.assigned_signal = signal;
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logic_mux_data_invalid_ = true;
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}
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commit_decoder_channels();
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channels_updated();
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begin_decode();
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}
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int DecodeSignal::get_assigned_signal_count() const
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{
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// Count all channels that have a signal assigned to them
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return count_if(channels_.begin(), channels_.end(),
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[](data::DecodeChannel ch) { return ch.assigned_signal; });
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}
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void DecodeSignal::set_initial_pin_state(const uint16_t channel_id, const int init_state)
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{
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for (data::DecodeChannel &ch : channels_)
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if (ch.id == channel_id)
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ch.initial_pin_state = init_state;
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channels_updated();
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begin_decode();
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}
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double DecodeSignal::samplerate() const
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{
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double result = 0;
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// TODO For now, we simply return the first samplerate that we have
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if (segments_.size() > 0)
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result = segments_.front().samplerate;
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return result;
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}
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const pv::util::Timestamp DecodeSignal::start_time() const
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{
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pv::util::Timestamp result;
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// TODO For now, we simply return the first start time that we have
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if (segments_.size() > 0)
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result = segments_.front().start_time;
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return result;
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}
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int64_t DecodeSignal::get_working_sample_count(uint32_t segment_id) const
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{
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// The working sample count is the highest sample number for
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// which all used signals have data available, so go through all
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// channels and use the lowest overall sample count of the segment
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int64_t count = std::numeric_limits<int64_t>::max();
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bool no_signals_assigned = true;
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for (const data::DecodeChannel &ch : channels_)
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if (ch.assigned_signal) {
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no_signals_assigned = false;
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const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
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if (!logic_data || logic_data->logic_segments().empty())
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return 0;
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try {
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const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
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count = min(count, (int64_t)segment->get_sample_count());
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} catch (out_of_range) {
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return 0;
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}
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}
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return (no_signals_assigned ? 0 : count);
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}
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int64_t DecodeSignal::get_decoded_sample_count(uint32_t segment_id) const
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{
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lock_guard<mutex> decode_lock(output_mutex_);
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int64_t result = 0;
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try {
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const DecodeSegment *segment = &(segments_.at(segment_id));
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result = segment->samples_decoded;
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} catch (out_of_range) {
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// Do nothing
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}
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return result;
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}
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vector<Row> DecodeSignal::visible_rows() const
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{
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lock_guard<mutex> lock(output_mutex_);
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vector<Row> rows;
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for (const shared_ptr<decode::Decoder> &dec : stack_) {
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assert(dec);
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if (!dec->shown())
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continue;
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const srd_decoder *const decc = dec->decoder();
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assert(dec->decoder());
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// Add a row for the decoder if it doesn't have a row list
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if (!decc->annotation_rows)
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rows.emplace_back(decc);
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// Add the decoder rows
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for (const GSList *l = decc->annotation_rows; l; l = l->next) {
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const srd_decoder_annotation_row *const ann_row =
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(srd_decoder_annotation_row *)l->data;
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assert(ann_row);
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rows.emplace_back(decc, ann_row);
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}
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}
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return rows;
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}
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void DecodeSignal::get_annotation_subset(
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vector<pv::data::decode::Annotation> &dest,
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const decode::Row &row, uint32_t segment_id, uint64_t start_sample,
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uint64_t end_sample) const
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{
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lock_guard<mutex> lock(output_mutex_);
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try {
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const DecodeSegment *segment = &(segments_.at(segment_id));
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const map<const decode::Row, decode::RowData> *rows =
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&(segment->annotation_rows);
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const auto iter = rows->find(row);
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if (iter != rows->end())
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(*iter).second.get_annotation_subset(dest,
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start_sample, end_sample);
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} catch (out_of_range) {
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// Do nothing
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}
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}
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void DecodeSignal::save_settings(QSettings &settings) const
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{
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SignalBase::save_settings(settings);
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settings.setValue("decoders", (int)(stack_.size()));
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// Save decoder stack
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int decoder_idx = 0;
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for (shared_ptr<decode::Decoder> decoder : stack_) {
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settings.beginGroup("decoder" + QString::number(decoder_idx++));
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settings.setValue("id", decoder->decoder()->id);
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// Save decoder options
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const map<string, GVariant*>& options = decoder->options();
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settings.setValue("options", (int)options.size());
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// Note: decode::Decoder::options() returns only the options
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// that differ from the default. See binding::Decoder::getter()
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int i = 0;
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for (auto option : options) {
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settings.beginGroup("option" + QString::number(i));
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settings.setValue("name", QString::fromStdString(option.first));
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GlobalSettings::store_gvariant(settings, option.second);
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settings.endGroup();
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i++;
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}
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settings.endGroup();
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}
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// Save channel mapping
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settings.setValue("channels", (int)channels_.size());
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for (unsigned int channel_id = 0; channel_id < channels_.size(); channel_id++) {
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auto channel = find_if(channels_.begin(), channels_.end(),
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[&](data::DecodeChannel ch) { return ch.id == channel_id; });
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if (channel == channels_.end()) {
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qDebug() << "ERROR: Gap in channel index:" << channel_id;
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continue;
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}
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settings.beginGroup("channel" + QString::number(channel_id));
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settings.setValue("name", channel->name); // Useful for debugging
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settings.setValue("initial_pin_state", channel->initial_pin_state);
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if (channel->assigned_signal)
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settings.setValue("assigned_signal_name", channel->assigned_signal->name());
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settings.endGroup();
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}
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}
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void DecodeSignal::restore_settings(QSettings &settings)
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{
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SignalBase::restore_settings(settings);
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// Restore decoder stack
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GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
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int decoders = settings.value("decoders").toInt();
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for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
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settings.beginGroup("decoder" + QString::number(decoder_idx));
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QString id = settings.value("id").toString();
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for (GSList *entry = dec_list; entry; entry = entry->next) {
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const srd_decoder *dec = (srd_decoder*)entry->data;
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if (!dec)
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continue;
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if (QString::fromUtf8(dec->id) == id) {
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shared_ptr<decode::Decoder> decoder =
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make_shared<decode::Decoder>(dec);
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stack_.push_back(decoder);
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// Restore decoder options that differ from their default
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int options = settings.value("options").toInt();
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for (int i = 0; i < options; i++) {
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settings.beginGroup("option" + QString::number(i));
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QString name = settings.value("name").toString();
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GVariant *value = GlobalSettings::restore_gvariant(settings);
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decoder->set_option(name.toUtf8(), value);
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settings.endGroup();
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}
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// Include the newly created decode channels in the channel lists
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update_channel_list();
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break;
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}
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}
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settings.endGroup();
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channels_updated();
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}
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// Restore channel mapping
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unsigned int channels = settings.value("channels").toInt();
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const unordered_set< shared_ptr<data::SignalBase> > signalbases =
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session_.signalbases();
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for (unsigned int channel_id = 0; channel_id < channels; channel_id++) {
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auto channel = find_if(channels_.begin(), channels_.end(),
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[&](data::DecodeChannel ch) { return ch.id == channel_id; });
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if (channel == channels_.end()) {
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qDebug() << "ERROR: Non-existant channel index:" << channel_id;
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continue;
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}
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settings.beginGroup("channel" + QString::number(channel_id));
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QString assigned_signal_name = settings.value("assigned_signal_name").toString();
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|
|
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();
|
|
}
|
|
|
|
// Update the internal structures
|
|
update_channel_list();
|
|
commit_decoder_channels();
|
|
|
|
begin_decode();
|
|
}
|
|
|
|
uint32_t DecodeSignal::get_input_segment_count() const
|
|
{
|
|
uint64_t count = std::numeric_limits<uint64_t>::max();
|
|
bool no_signals_assigned = true;
|
|
|
|
for (const data::DecodeChannel &ch : channels_)
|
|
if (ch.assigned_signal) {
|
|
no_signals_assigned = false;
|
|
|
|
const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
|
|
if (!logic_data || logic_data->logic_segments().empty())
|
|
return 0;
|
|
|
|
// Find the min value of all segment counts
|
|
if ((uint64_t)(logic_data->logic_segments().size()) < count)
|
|
count = logic_data->logic_segments().size();
|
|
}
|
|
|
|
return (no_signals_assigned ? 0 : count);
|
|
}
|
|
|
|
uint32_t DecodeSignal::get_input_samplerate(uint32_t segment_id) const
|
|
{
|
|
double samplerate = 0;
|
|
|
|
for (const data::DecodeChannel &ch : channels_)
|
|
if (ch.assigned_signal) {
|
|
const shared_ptr<Logic> logic_data = ch.assigned_signal->logic_data();
|
|
if (!logic_data || logic_data->logic_segments().empty())
|
|
continue;
|
|
|
|
try {
|
|
const shared_ptr<LogicSegment> segment = logic_data->logic_segments().at(segment_id);
|
|
samplerate = segment->samplerate();
|
|
} catch (out_of_range) {
|
|
// Do nothing
|
|
}
|
|
break;
|
|
}
|
|
|
|
return samplerate;
|
|
}
|
|
|
|
void DecodeSignal::update_channel_list()
|
|
{
|
|
vector<data::DecodeChannel> prev_channels = channels_;
|
|
channels_.clear();
|
|
|
|
uint16_t id = 0;
|
|
|
|
// Copy existing entries, create new as needed
|
|
for (shared_ptr<Decoder> decoder : stack_) {
|
|
const srd_decoder* srd_d = decoder->decoder();
|
|
const GSList *l;
|
|
|
|
// Mandatory channels
|
|
for (l = srd_d->channels; l; l = l->next) {
|
|
const struct srd_channel *const pdch = (struct srd_channel *)l->data;
|
|
bool ch_added = false;
|
|
|
|
// Copy but update ID if this channel was in the list before
|
|
for (data::DecodeChannel &ch : prev_channels)
|
|
if (ch.pdch_ == pdch) {
|
|
ch.id = id++;
|
|
channels_.push_back(ch);
|
|
ch_added = true;
|
|
break;
|
|
}
|
|
|
|
if (!ch_added) {
|
|
// Create new entry without a mapped signal
|
|
data::DecodeChannel ch = {id++, 0, false, nullptr,
|
|
QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
|
|
SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
|
|
channels_.push_back(ch);
|
|
}
|
|
}
|
|
|
|
// Optional channels
|
|
for (l = srd_d->opt_channels; l; l = l->next) {
|
|
const struct srd_channel *const pdch = (struct srd_channel *)l->data;
|
|
bool ch_added = false;
|
|
|
|
// Copy but update ID if this channel was in the list before
|
|
for (data::DecodeChannel &ch : prev_channels)
|
|
if (ch.pdch_ == pdch) {
|
|
ch.id = id++;
|
|
channels_.push_back(ch);
|
|
ch_added = true;
|
|
break;
|
|
}
|
|
|
|
if (!ch_added) {
|
|
// Create new entry without a mapped signal
|
|
data::DecodeChannel ch = {id++, 0, true, nullptr,
|
|
QString::fromUtf8(pdch->name), QString::fromUtf8(pdch->desc),
|
|
SRD_INITIAL_PIN_SAME_AS_SAMPLE0, decoder, pdch};
|
|
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::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);
|
|
}
|
|
|
|
// Channel bit IDs must be in sync with the channel's apperance in channels_
|
|
int id = 0;
|
|
for (data::DecodeChannel &ch : channels_)
|
|
if (ch.assigned_signal)
|
|
ch.bit_id = id++;
|
|
}
|
|
|
|
void DecodeSignal::mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end)
|
|
{
|
|
// Enforce end to be greater than start
|
|
if (end <= start)
|
|
return;
|
|
|
|
// Fetch the channel segments and their data
|
|
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();
|
|
|
|
shared_ptr<LogicSegment> segment;
|
|
try {
|
|
segment = logic_data->logic_segments().at(segment_id);
|
|
} catch (out_of_range) {
|
|
qDebug() << "Muxer error for" << name() << ":" << ch.assigned_signal->name() \
|
|
<< "has no logic segment" << segment_id;
|
|
return;
|
|
}
|
|
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);
|
|
}
|
|
|
|
|
|
shared_ptr<LogicSegment> output_segment;
|
|
try {
|
|
output_segment = logic_mux_data_->logic_segments().at(segment_id);
|
|
} catch (out_of_range) {
|
|
qDebug() << "Muxer error for" << name() << ": no logic mux segment" \
|
|
<< segment_id << "in mux_logic_samples(), mux segments size is" \
|
|
<< logic_mux_data_->logic_segments().size();
|
|
return;
|
|
}
|
|
|
|
// Perform the muxing of signal data into the output data
|
|
uint8_t* output = new uint8_t[(end - start) * output_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 * output_segment->unit_size();
|
|
for (unsigned int i = 0; i < output_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++;
|
|
}
|
|
}
|
|
}
|
|
|
|
output_segment->append_payload(output, (end - start) * output_segment->unit_size());
|
|
delete[] output;
|
|
|
|
for (const uint8_t* data : signal_data)
|
|
delete[] data;
|
|
}
|
|
|
|
void DecodeSignal::logic_mux_proc()
|
|
{
|
|
uint32_t segment_id = 0;
|
|
|
|
assert(logic_mux_data_);
|
|
|
|
// Create initial logic mux segment
|
|
shared_ptr<LogicSegment> output_segment =
|
|
make_shared<LogicSegment>(*logic_mux_data_, segment_id,
|
|
logic_mux_unit_size_, 0);
|
|
logic_mux_data_->push_segment(output_segment);
|
|
|
|
output_segment->set_samplerate(get_input_samplerate(0));
|
|
|
|
do {
|
|
const uint64_t input_sample_count = get_working_sample_count(segment_id);
|
|
const uint64_t output_sample_count = output_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 = output_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(segment_id, 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) {
|
|
// TODO Optimize this by caching the input segment count and only
|
|
// querying it when the cached value was reached
|
|
if (segment_id < get_input_segment_count() - 1) {
|
|
// Process next segment
|
|
segment_id++;
|
|
|
|
output_segment =
|
|
make_shared<LogicSegment>(*logic_mux_data_, segment_id,
|
|
logic_mux_unit_size_, 0);
|
|
logic_mux_data_->push_segment(output_segment);
|
|
|
|
output_segment->set_samplerate(get_input_samplerate(segment_id));
|
|
|
|
} else {
|
|
// All segments have been processed
|
|
logic_mux_data_invalid_ = false;
|
|
|
|
// Wait for more input
|
|
unique_lock<mutex> logic_mux_lock(logic_mux_mutex_);
|
|
logic_mux_cond_.wait(logic_mux_lock);
|
|
}
|
|
}
|
|
} while (!logic_mux_interrupt_);
|
|
}
|
|
|
|
void DecodeSignal::decode_data(
|
|
const int64_t abs_start_samplenum, const int64_t sample_count,
|
|
const shared_ptr<LogicSegment> input_segment)
|
|
{
|
|
const int64_t unit_size = input_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];
|
|
input_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_);
|
|
segments_.at(current_segment_id_).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()
|
|
{
|
|
current_segment_id_ = 0;
|
|
|
|
// If there is no input data available yet, wait until it is or we're interrupted
|
|
if (logic_mux_data_->logic_segments().size() == 0) {
|
|
unique_lock<mutex> input_wait_lock(input_mutex_);
|
|
decode_input_cond_.wait(input_wait_lock);
|
|
}
|
|
|
|
if (decode_interrupt_)
|
|
return;
|
|
|
|
shared_ptr<LogicSegment> input_segment = logic_mux_data_->logic_segments().front();
|
|
assert(input_segment);
|
|
|
|
// Create the initial segment and set its sample rate so that we can pass it to SRD
|
|
create_decode_segment();
|
|
segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
|
|
segments_.at(current_segment_id_).start_time = input_segment->start_time();
|
|
|
|
start_srd_session();
|
|
|
|
uint64_t sample_count = 0;
|
|
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 = input_segment->get_sample_count() - abs_start_samplenum;
|
|
|
|
if (sample_count > 0) {
|
|
decode_data(abs_start_samplenum, sample_count, input_segment);
|
|
abs_start_samplenum += sample_count;
|
|
}
|
|
} while (error_message_.isEmpty() && (sample_count > 0) && !decode_interrupt_);
|
|
|
|
if (error_message_.isEmpty() && !decode_interrupt_ && sample_count == 0) {
|
|
if (current_segment_id_ < logic_mux_data_->logic_segments().size() - 1) {
|
|
// Process next segment
|
|
current_segment_id_++;
|
|
|
|
try {
|
|
input_segment = logic_mux_data_->logic_segments().at(current_segment_id_);
|
|
} catch (out_of_range) {
|
|
qDebug() << "Decode error for" << name() << ": no logic mux segment" \
|
|
<< current_segment_id_ << "in decode_proc(), mux segments size is" \
|
|
<< logic_mux_data_->logic_segments().size();
|
|
return;
|
|
}
|
|
abs_start_samplenum = 0;
|
|
|
|
// Create the next segment and set its metadata
|
|
create_decode_segment();
|
|
segments_.at(current_segment_id_).samplerate = input_segment->samplerate();
|
|
segments_.at(current_segment_id_).start_time = input_segment->start_time();
|
|
|
|
// Reset decoder state
|
|
stop_srd_session();
|
|
start_srd_session();
|
|
} else {
|
|
// All segments have been processed
|
|
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()
|
|
{
|
|
uint64_t samplerate;
|
|
|
|
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_);
|
|
srd_session_ = nullptr;
|
|
return;
|
|
}
|
|
|
|
if (prev_di)
|
|
srd_inst_stack(srd_session_, prev_di, di);
|
|
|
|
prev_di = di;
|
|
}
|
|
|
|
// Start the session
|
|
samplerate = segments_.at(current_segment_id_).samplerate;
|
|
if (samplerate)
|
|
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::create_decode_segment()
|
|
{
|
|
// Create annotation segment
|
|
segments_.emplace_back(DecodeSegment());
|
|
|
|
// 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)
|
|
(segments_.back().annotation_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
|
|
(segments_.back().annotation_rows)[row] =
|
|
decode::RowData();
|
|
}
|
|
}
|
|
}
|
|
|
|
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_);
|
|
|
|
// Find the row
|
|
assert(pdata->pdo);
|
|
assert(pdata->pdo->di);
|
|
const srd_decoder *const decc = pdata->pdo->di->decoder;
|
|
assert(decc);
|
|
|
|
const srd_proto_data_annotation *const pda =
|
|
(const srd_proto_data_annotation*)pdata->data;
|
|
assert(pda);
|
|
|
|
auto row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.end();
|
|
|
|
// Try looking up the sub-row of this class
|
|
const auto format = pda->ann_class;
|
|
const auto r = ds->class_rows_.find(make_pair(decc, format));
|
|
if (r != ds->class_rows_.end())
|
|
row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find((*r).second);
|
|
else {
|
|
// Failing that, use the decoder as a key
|
|
row_iter = ds->segments_.at(ds->current_segment_id_).annotation_rows.find(Row(decc));
|
|
}
|
|
|
|
if (row_iter == ds->segments_.at(ds->current_segment_id_).annotation_rows.end()) {
|
|
qDebug() << "Unexpected annotation: decoder = " << decc <<
|
|
", format = " << format;
|
|
assert(false);
|
|
return;
|
|
}
|
|
|
|
// Add the annotation
|
|
(*row_iter).second.emplace_annotation(pdata);
|
|
}
|
|
|
|
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) {
|
|
logic_mux_data_invalid_ = true;
|
|
begin_decode();
|
|
}
|
|
}
|
|
|
|
void DecodeSignal::on_data_cleared()
|
|
{
|
|
reset_decode();
|
|
}
|
|
|
|
void DecodeSignal::on_data_received()
|
|
{
|
|
if (!logic_mux_thread_.joinable())
|
|
begin_decode();
|
|
else
|
|
logic_mux_cond_.notify_one();
|
|
}
|
|
|
|
} // namespace data
|
|
} // namespace pv
|