mirror of git://sigrok.org/pulseview
237 lines
6.3 KiB
C++
237 lines
6.3 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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#ifndef PULSEVIEW_PV_DATA_DECODESIGNAL_HPP
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#define PULSEVIEW_PV_DATA_DECODESIGNAL_HPP
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#include <atomic>
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#include <condition_variable>
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#include <unordered_set>
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#include <vector>
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#include <QSettings>
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#include <QString>
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#include <libsigrokdecode/libsigrokdecode.h>
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#include <pv/data/decode/row.hpp>
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#include <pv/data/decode/rowdata.hpp>
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#include <pv/data/signalbase.hpp>
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#include <pv/util.hpp>
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using std::atomic;
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using std::condition_variable;
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using std::map;
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using std::mutex;
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using std::pair;
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using std::vector;
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using std::shared_ptr;
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namespace pv {
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class Session;
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namespace data {
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namespace decode {
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class Annotation;
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class Decoder;
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class Row;
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}
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class Logic;
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class LogicSegment;
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class SignalBase;
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class SignalData;
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struct DecodeChannel
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{
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uint16_t id; ///< Global numerical ID for the decode channels in the stack
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uint16_t bit_id; ///< Tells which bit within a sample represents this channel
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const bool is_optional;
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const pv::data::SignalBase *assigned_signal;
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const QString name, desc;
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int initial_pin_state;
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const shared_ptr<pv::data::decode::Decoder> decoder_;
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const srd_channel *pdch_;
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};
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struct DecodeSegment
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{
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map<const decode::Row, decode::RowData> annotation_rows;
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pv::util::Timestamp start_time;
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double samplerate;
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int64_t samples_decoded_incl, samples_decoded_excl;
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};
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class DecodeSignal : public SignalBase
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{
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Q_OBJECT
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private:
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static const double DecodeMargin;
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static const double DecodeThreshold;
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static const int64_t DecodeChunkLength;
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public:
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DecodeSignal(pv::Session &session);
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virtual ~DecodeSignal();
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bool is_decode_signal() const;
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const vector< shared_ptr<data::decode::Decoder> >& decoder_stack() const;
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void stack_decoder(const srd_decoder *decoder);
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void remove_decoder(int index);
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bool toggle_decoder_visibility(int index);
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void reset_decode(bool shutting_down = false);
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void begin_decode();
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void pause_decode();
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void resume_decode();
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bool is_paused() const;
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QString error_message() const;
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const vector<data::DecodeChannel> get_channels() const;
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void auto_assign_signals(const shared_ptr<pv::data::decode::Decoder> dec);
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void assign_signal(const uint16_t channel_id, const SignalBase *signal);
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int get_assigned_signal_count() const;
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void set_initial_pin_state(const uint16_t channel_id, const int init_state);
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double samplerate() const;
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const pv::util::Timestamp start_time() const;
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/**
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* Returns the number of samples that can be worked on,
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* i.e. the number of samples where samples are available
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* for all connected channels.
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*/
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int64_t get_working_sample_count(uint32_t segment_id) const;
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/**
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* Returns the number of processed samples. Newly generated annotations will
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* have sample numbers greater than this.
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*
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* If include_processing is true, this number will include the ones being
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* currently processed (in case the decoder stack is running). In this case,
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* newly generated annotations will have sample numbers smaller than this.
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*/
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int64_t get_decoded_sample_count(uint32_t segment_id,
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bool include_processing) const;
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vector<decode::Row> visible_rows() const;
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/**
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* Extracts annotations from a single row into a vector.
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* Note: The annotations may be unsorted and only annotations that fully
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* fit into the sample range are considered.
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*/
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void 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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* Extracts annotations from all rows into a vector.
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* Note: The annotations may be unsorted and only annotations that fully
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* fit into the sample range are considered.
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*/
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void get_annotation_subset(
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vector<pv::data::decode::Annotation> &dest,
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uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const;
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virtual void save_settings(QSettings &settings) const;
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virtual void restore_settings(QSettings &settings);
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private:
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void set_error_message(QString msg);
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uint32_t get_input_segment_count() const;
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uint32_t get_input_samplerate(uint32_t segment_id) const;
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void update_channel_list();
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void commit_decoder_channels();
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void mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end);
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void logic_mux_proc();
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void decode_data(const int64_t abs_start_samplenum, const int64_t sample_count,
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const shared_ptr<LogicSegment> input_segment);
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void decode_proc();
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void start_srd_session();
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void terminate_srd_session();
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void stop_srd_session();
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void connect_input_notifiers();
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void create_decode_segment();
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static void annotation_callback(srd_proto_data *pdata, void *decode_signal);
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Q_SIGNALS:
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void new_annotations(); // TODO Supply segment for which they belong to
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void decode_reset();
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void decode_finished();
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void channels_updated();
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private Q_SLOTS:
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void on_capture_state_changed(int state);
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void on_data_cleared();
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void on_data_received();
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private:
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pv::Session &session_;
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vector<data::DecodeChannel> channels_;
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struct srd_session *srd_session_;
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shared_ptr<Logic> logic_mux_data_;
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uint32_t logic_mux_unit_size_;
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bool logic_mux_data_invalid_;
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vector< shared_ptr<decode::Decoder> > stack_;
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bool stack_config_changed_;
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map<pair<const srd_decoder*, int>, decode::Row> class_rows_;
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vector<DecodeSegment> segments_;
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uint32_t current_segment_id_;
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mutable mutex input_mutex_, output_mutex_, decode_pause_mutex_, logic_mux_mutex_;
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mutable condition_variable decode_input_cond_, decode_pause_cond_,
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logic_mux_cond_;
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std::thread decode_thread_, logic_mux_thread_;
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atomic<bool> decode_interrupt_, logic_mux_interrupt_;
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bool decode_paused_;
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QString error_message_;
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};
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} // namespace data
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} // namespace pv
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#endif // PULSEVIEW_PV_DATA_DECODESIGNAL_HPP
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