pv/data/decodesignal.hpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef PULSEVIEW_PV_DATA_DECODESIGNAL_HPP
  21 #define PULSEVIEW_PV_DATA_DECODESIGNAL_HPP
  22
  23 #include <atomic>
  24 #include <deque>
  25 #include <condition_variable>
  26 #include <unordered_set>
  27 #include <vector>
  28
  29 #include <QDebug>
  30 #include <QSettings>
  31
  32 #include <libsigrokdecode/libsigrokdecode.h>
  33
  34 #include <pv/data/decode/decoder.hpp>
  35 #include <pv/data/decode/row.hpp>
  36 #include <pv/data/decode/rowdata.hpp>
  37 #include <pv/data/signalbase.hpp>
  38 #include <pv/util.hpp>
  39
  40 using std::atomic;
  41 using std::condition_variable;
  42 using std::deque;
  43 using std::map;
  44 using std::mutex;
  45 using std::vector;
  46 using std::shared_ptr;
  47
  48 using pv::data::decode::Annotation;
  49 using pv::data::decode::DecodeBinaryClassInfo;
  50 using pv::data::decode::DecodeChannel;
  51 using pv::data::decode::Decoder;
  52 using pv::data::decode::Row;
  53 using pv::data::decode::RowData;
  54
  55 namespace pv {
  56 class Session;
  57
  58 namespace data {
  59
  60 class Logic;
  61 class LogicSegment;
  62 class SignalBase;
  63 class SignalData;
  64
  65 struct DecodeBinaryDataChunk
  66 {
  67         vector<uint8_t> data;
  68         uint64_t sample;   ///< Number of the sample where this data was provided by the PD
  69 };
  70
  71 struct DecodeBinaryClass
  72 {
  73         const Decoder* decoder;
  74         const DecodeBinaryClassInfo* info;
  75         deque<DecodeBinaryDataChunk> chunks;
  76 };
  77
  78 struct DecodeSegment
  79 {
  80         // Constructor is a no-op
  81         DecodeSegment() { };
  82         // Copy constructor is a no-op
  83         DecodeSegment(DecodeSegment&& ds) { (void)ds; qCritical() << "Empty DecodeSegment copy constructor called"; };
  84
  85         map<const Row*, RowData> annotation_rows;  // Note: Row is the same for all segments while RowData is not
  86         pv::util::Timestamp start_time;
  87         double samplerate;
  88         int64_t samples_decoded_incl, samples_decoded_excl;
  89         vector<DecodeBinaryClass> binary_classes;
  90         deque<const Annotation*> all_annotations;
  91 };
  92
  93 class DecodeSignal : public SignalBase
  94 {
  95         Q_OBJECT
  96
  97 private:
  98         static const double DecodeMargin;
  99         static const double DecodeThreshold;
 100         static const int64_t DecodeChunkLength;
 101
 102 public:
 103         DecodeSignal(pv::Session &session);
 104         virtual ~DecodeSignal();
 105
 106         bool is_decode_signal() const;
 107         const vector< shared_ptr<Decoder> >& decoder_stack() const;
 108
 109         void stack_decoder(const srd_decoder *decoder, bool restart_decode=true);
 110         void remove_decoder(int index);
 111         bool toggle_decoder_visibility(int index);
 112
 113         void reset_decode(bool shutting_down = false);
 114         void begin_decode();
 115         void pause_decode();
 116         void resume_decode();
 117         bool is_paused() const;
 118
 119         const vector<decode::DecodeChannel> get_channels() const;
 120         void auto_assign_signals(const shared_ptr<Decoder> dec);
 121         void assign_signal(const uint16_t channel_id, shared_ptr<const SignalBase> signal);
 122         int get_assigned_signal_count() const;
 123
 124         void set_initial_pin_state(const uint16_t channel_id, const int init_state);
 125
 126         virtual double get_samplerate() const;
 127         const pv::util::Timestamp start_time() const;
 128
 129         /**
 130          * Returns the number of samples that can be worked on,
 131          * i.e. the number of samples where samples are available
 132          * for all connected channels.
 133          */
 134         int64_t get_working_sample_count(uint32_t segment_id) const;
 135
 136         /**
 137          * Returns the number of processed samples. Newly generated annotations will
 138          * have sample numbers greater than this.
 139          *
 140          * If include_processing is true, this number will include the ones being
 141          * currently processed (in case the decoder stack is running). In this case,
 142          * newly generated annotations will have sample numbers smaller than this.
 143          */
 144         int64_t get_decoded_sample_count(uint32_t segment_id,
 145                 bool include_processing) const;
 146
 147         vector<Row*> get_rows(bool visible_only=false);
 148         vector<const Row*> get_rows(bool visible_only=false) const;
 149
 150         uint64_t get_annotation_count(const Row* row, uint32_t segment_id) const;
 151
 152         /**
 153          * Extracts annotations from a single row into a vector.
 154          * Note: The annotations may be unsorted and only annotations that fully
 155          * fit into the sample range are considered.
 156          */
 157         void get_annotation_subset(deque<const Annotation*> &dest, const Row* row,
 158                 uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const;
 159
 160         /**
 161          * Extracts annotations from all rows into a vector.
 162          * Note: The annotations may be unsorted and only annotations that fully
 163          * fit into the sample range are considered.
 164          */
 165         void get_annotation_subset(deque<const Annotation*> &dest, uint32_t segment_id,
 166                 uint64_t start_sample, uint64_t end_sample) const;
 167
 168         uint32_t get_binary_data_chunk_count(uint32_t segment_id,
 169                 const Decoder* dec, uint32_t bin_class_id) const;
 170         void get_binary_data_chunk(uint32_t segment_id, const Decoder* dec,
 171                 uint32_t bin_class_id, uint32_t chunk_id, const vector<uint8_t> **dest,
 172                 uint64_t *size);
 173         void get_merged_binary_data_chunks_by_sample(uint32_t segment_id,
 174                 const Decoder* dec, uint32_t bin_class_id,
 175                 uint64_t start_sample, uint64_t end_sample,
 176                 vector<uint8_t> *dest) const;
 177         void get_merged_binary_data_chunks_by_offset(uint32_t segment_id,
 178                 const Decoder* dec, uint32_t bin_class_id,
 179                 uint64_t start, uint64_t end,
 180                 vector<uint8_t> *dest) const;
 181         const DecodeBinaryClass* get_binary_data_class(uint32_t segment_id,
 182                 const Decoder* dec, uint32_t bin_class_id) const;
 183
 184         const deque<const Annotation*>* get_all_annotations_by_segment(uint32_t segment_id) const;
 185
 186         virtual void save_settings(QSettings &settings) const;
 187
 188         virtual void restore_settings(QSettings &settings);
 189
 190 private:
 191         bool all_input_segments_complete(uint32_t segment_id) const;
 192         uint32_t get_input_segment_count() const;
 193         double get_input_samplerate(uint32_t segment_id) const;
 194
 195         Decoder* get_decoder_by_instance(const srd_decoder *const srd_dec);
 196
 197         void update_channel_list();
 198
 199         void commit_decoder_channels();
 200
 201         void mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end);
 202         void logic_mux_proc();
 203
 204         void decode_data(const int64_t abs_start_samplenum, const int64_t sample_count,
 205                 const shared_ptr<const LogicSegment> input_segment);
 206         void decode_proc();
 207
 208         void start_srd_session();
 209         void terminate_srd_session();
 210         void stop_srd_session();
 211
 212         void connect_input_notifiers();
 213
 214         void create_decode_segment();
 215
 216         static void annotation_callback(srd_proto_data *pdata, void *decode_signal);
 217         static void binary_callback(srd_proto_data *pdata, void *decode_signal);
 218
 219 Q_SIGNALS:
 220         void decoder_stacked(void* decoder); ///< decoder is of type decode::Decoder*
 221         void decoder_removed(void* decoder); ///< decoder is of type decode::Decoder*
 222         void new_annotations(); // TODO Supply segment for which they belong to
 223         void new_binary_data(unsigned int segment_id, void* decoder, unsigned int bin_class_id);
 224         void decode_reset();
 225         void decode_finished();
 226         void channels_updated();
 227         void annotation_visibility_changed();
 228
 229 private Q_SLOTS:
 230         void on_capture_state_changed(int state);
 231         void on_data_cleared();
 232         void on_data_received();
 233
 234         void on_annotation_visibility_changed();
 235
 236 private:
 237         pv::Session &session_;
 238
 239         vector<decode::DecodeChannel> channels_;
 240
 241         struct srd_session *srd_session_;
 242
 243         shared_ptr<Logic> logic_mux_data_;
 244         uint32_t logic_mux_unit_size_;
 245         bool logic_mux_data_invalid_;
 246
 247         vector< shared_ptr<Decoder> > stack_;
 248         bool stack_config_changed_;
 249
 250         deque<DecodeSegment> segments_;
 251         uint32_t current_segment_id_;
 252
 253         mutable mutex input_mutex_, output_mutex_, decode_pause_mutex_, logic_mux_mutex_;
 254         mutable condition_variable decode_input_cond_, decode_pause_cond_,
 255                 logic_mux_cond_;
 256
 257         std::thread decode_thread_, logic_mux_thread_;
 258         atomic<bool> decode_interrupt_, logic_mux_interrupt_;
 259
 260         bool decode_paused_;
 261 };
 262
 263 } // namespace data
 264 } // namespace pv
 265
 266 #endif // PULSEVIEW_PV_DATA_DECODESIGNAL_HPP