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 <QSettings>
  30 #include <QString>
  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         map<const Row*, RowData> annotation_rows;
  81         pv::util::Timestamp start_time;
  82         double samplerate;
  83         int64_t samples_decoded_incl, samples_decoded_excl;
  84         vector<DecodeBinaryClass> binary_classes;
  85 };
  86
  87 class DecodeSignal : public SignalBase
  88 {
  89         Q_OBJECT
  90
  91 private:
  92         static const double DecodeMargin;
  93         static const double DecodeThreshold;
  94         static const int64_t DecodeChunkLength;
  95
  96 public:
  97         DecodeSignal(pv::Session &session);
  98         virtual ~DecodeSignal();
  99
 100         bool is_decode_signal() const;
 101         const vector< shared_ptr<Decoder> >& decoder_stack() const;
 102
 103         void stack_decoder(const srd_decoder *decoder, bool restart_decode=true);
 104         void remove_decoder(int index);
 105         bool toggle_decoder_visibility(int index);
 106
 107         void reset_decode(bool shutting_down = false);
 108         void begin_decode();
 109         void pause_decode();
 110         void resume_decode();
 111         bool is_paused() const;
 112         QString error_message() const;
 113
 114         const vector<decode::DecodeChannel> get_channels() const;
 115         void auto_assign_signals(const shared_ptr<Decoder> dec);
 116         void assign_signal(const uint16_t channel_id, const SignalBase *signal);
 117         int get_assigned_signal_count() const;
 118
 119         void set_initial_pin_state(const uint16_t channel_id, const int init_state);
 120
 121         double samplerate() const;
 122         const pv::util::Timestamp start_time() const;
 123
 124         /**
 125          * Returns the number of samples that can be worked on,
 126          * i.e. the number of samples where samples are available
 127          * for all connected channels.
 128          */
 129         int64_t get_working_sample_count(uint32_t segment_id) const;
 130
 131         /**
 132          * Returns the number of processed samples. Newly generated annotations will
 133          * have sample numbers greater than this.
 134          *
 135          * If include_processing is true, this number will include the ones being
 136          * currently processed (in case the decoder stack is running). In this case,
 137          * newly generated annotations will have sample numbers smaller than this.
 138          */
 139         int64_t get_decoded_sample_count(uint32_t segment_id,
 140                 bool include_processing) const;
 141
 142         vector<Row*> get_rows(bool visible_only=false);
 143         vector<const Row*> get_rows(bool visible_only=false) const;
 144
 145         uint64_t get_annotation_count(const Row* row, uint32_t segment_id) const;
 146
 147         /**
 148          * Extracts annotations from a single row into a vector.
 149          * Note: The annotations may be unsorted and only annotations that fully
 150          * fit into the sample range are considered.
 151          */
 152         void get_annotation_subset(deque<const Annotation*> &dest, const Row* row,
 153                 uint32_t segment_id, uint64_t start_sample, uint64_t end_sample) const;
 154
 155         /**
 156          * Extracts annotations from all rows into a vector.
 157          * Note: The annotations may be unsorted and only annotations that fully
 158          * fit into the sample range are considered.
 159          */
 160         void get_annotation_subset(deque<const Annotation*> &dest, uint32_t segment_id,
 161                 uint64_t start_sample, uint64_t end_sample) const;
 162
 163         uint32_t get_binary_data_chunk_count(uint32_t segment_id,
 164                 const Decoder* dec, uint32_t bin_class_id) const;
 165         void get_binary_data_chunk(uint32_t segment_id, const Decoder* dec,
 166                 uint32_t bin_class_id, uint32_t chunk_id, const vector<uint8_t> **dest,
 167                 uint64_t *size);
 168         void get_merged_binary_data_chunks_by_sample(uint32_t segment_id,
 169                 const Decoder* dec, uint32_t bin_class_id,
 170                 uint64_t start_sample, uint64_t end_sample,
 171                 vector<uint8_t> *dest) const;
 172         void get_merged_binary_data_chunks_by_offset(uint32_t segment_id,
 173                 const Decoder* dec, uint32_t bin_class_id,
 174                 uint64_t start, uint64_t end,
 175                 vector<uint8_t> *dest) const;
 176         const DecodeBinaryClass* get_binary_data_class(uint32_t segment_id,
 177                 const Decoder* dec, uint32_t bin_class_id) const;
 178
 179         virtual void save_settings(QSettings &settings) const;
 180
 181         virtual void restore_settings(QSettings &settings);
 182
 183 private:
 184         void set_error_message(QString msg);
 185
 186         uint32_t get_input_segment_count() const;
 187         uint32_t get_input_samplerate(uint32_t segment_id) const;
 188
 189         Decoder* get_decoder_by_instance(const srd_decoder *const srd_dec);
 190
 191         void update_channel_list();
 192
 193         void commit_decoder_channels();
 194
 195         void mux_logic_samples(uint32_t segment_id, const int64_t start, const int64_t end);
 196         void logic_mux_proc();
 197
 198         void decode_data(const int64_t abs_start_samplenum, const int64_t sample_count,
 199                 const shared_ptr<LogicSegment> input_segment);
 200         void decode_proc();
 201
 202         void start_srd_session();
 203         void terminate_srd_session();
 204         void stop_srd_session();
 205
 206         void connect_input_notifiers();
 207
 208         void create_decode_segment();
 209
 210         static void annotation_callback(srd_proto_data *pdata, void *decode_signal);
 211         static void binary_callback(srd_proto_data *pdata, void *decode_signal);
 212
 213 Q_SIGNALS:
 214         void decoder_stacked(void* decoder); ///< decoder is of type decode::Decoder*
 215         void decoder_removed(void* decoder); ///< decoder is of type decode::Decoder*
 216         void new_annotations(); // TODO Supply segment for which they belong to
 217         void new_binary_data(unsigned int segment_id, void* decoder, unsigned int bin_class_id);
 218         void decode_reset();
 219         void decode_finished();
 220         void channels_updated();
 221
 222 private Q_SLOTS:
 223         void on_capture_state_changed(int state);
 224         void on_data_cleared();
 225         void on_data_received();
 226
 227 private:
 228         pv::Session &session_;
 229
 230         vector<decode::DecodeChannel> channels_;
 231
 232         struct srd_session *srd_session_;
 233
 234         shared_ptr<Logic> logic_mux_data_;
 235         uint32_t logic_mux_unit_size_;
 236         bool logic_mux_data_invalid_;
 237
 238         vector< shared_ptr<Decoder> > stack_;
 239         bool stack_config_changed_;
 240
 241         vector<DecodeSegment> segments_;
 242         uint32_t current_segment_id_;
 243
 244         mutable mutex input_mutex_, output_mutex_, decode_pause_mutex_, logic_mux_mutex_;
 245         mutable condition_variable decode_input_cond_, decode_pause_cond_,
 246                 logic_mux_cond_;
 247
 248         std::thread decode_thread_, logic_mux_thread_;
 249         atomic<bool> decode_interrupt_, logic_mux_interrupt_;
 250
 251         bool decode_paused_;
 252
 253         QString error_message_;
 254 };
 255
 256 } // namespace data
 257 } // namespace pv
 258
 259 #endif // PULSEVIEW_PV_DATA_DECODESIGNAL_HPP