pv/session.hpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012-14 Joel Holdsworth <joel@airwebreathe.org.uk>
   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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #ifndef PULSEVIEW_PV_SIGSESSION_H
  22 #define PULSEVIEW_PV_SIGSESSION_H
  23
  24 #include <map>
  25 #include <memory>
  26 #include <mutex>
  27 #include <set>
  28 #include <string>
  29 #include <thread>
  30 #include <vector>
  31
  32 #include <boost/thread.hpp>
  33
  34 #include <QObject>
  35 #include <QString>
  36
  37 struct srd_decoder;
  38 struct srd_channel;
  39
  40 namespace sigrok {
  41         class Analog;
  42         class Channel;
  43         class Device;
  44         class Logic;
  45         class Meta;
  46         class Packet;
  47         class Session;
  48 }
  49
  50 namespace pv {
  51
  52 class DeviceManager;
  53
  54 namespace data {
  55 class Analog;
  56 class AnalogSnapshot;
  57 class Logic;
  58 class LogicSnapshot;
  59 class SignalData;
  60 }
  61
  62 namespace view {
  63 class DecodeTrace;
  64 class LogicSignal;
  65 class Signal;
  66 }
  67
  68 class Session : public QObject
  69 {
  70         Q_OBJECT
  71
  72 public:
  73         enum capture_state {
  74                 Stopped,
  75                 AwaitingTrigger,
  76                 Running
  77         };
  78
  79 public:
  80         Session(DeviceManager &device_manager);
  81
  82         ~Session();
  83
  84         DeviceManager& device_manager();
  85
  86         const DeviceManager& device_manager() const;
  87
  88         const std::shared_ptr<sigrok::Session>& session() const;
  89
  90         std::shared_ptr<sigrok::Device> device() const;
  91
  92         /**
  93          * Sets device instance that will be used in the next capture session.
  94          */
  95         void set_device(std::shared_ptr<sigrok::Device> device);
  96
  97         void set_file(const std::string &name);
  98
  99         void set_default_device();
 100
 101         capture_state get_capture_state() const;
 102
 103         void start_capture(std::function<void (const QString)> error_handler);
 104
 105         void stop_capture();
 106
 107         std::set< std::shared_ptr<data::SignalData> > get_data() const;
 108
 109         boost::shared_mutex& signals_mutex() const;
 110
 111         const std::vector< std::shared_ptr<view::Signal> >& signals() const;
 112
 113 #ifdef ENABLE_DECODE
 114         bool add_decoder(srd_decoder *const dec);
 115
 116         std::vector< std::shared_ptr<view::DecodeTrace> >
 117                 get_decode_signals() const;
 118
 119         void remove_decode_signal(view::DecodeTrace *signal);
 120 #endif
 121
 122 private:
 123         void set_capture_state(capture_state state);
 124
 125         void update_signals(std::shared_ptr<sigrok::Device> device);
 126
 127         std::shared_ptr<view::Signal> signal_from_channel(
 128                 std::shared_ptr<sigrok::Channel> channel) const;
 129
 130         void read_sample_rate(std::shared_ptr<sigrok::Device>);
 131
 132 private:
 133         void sample_thread_proc(std::shared_ptr<sigrok::Device> device,
 134                 std::function<void (const QString)> error_handler);
 135
 136         void feed_in_header(std::shared_ptr<sigrok::Device> device);
 137
 138         void feed_in_meta(std::shared_ptr<sigrok::Device> device,
 139                 std::shared_ptr<sigrok::Meta> meta);
 140
 141         void feed_in_frame_begin();
 142
 143         void feed_in_logic(std::shared_ptr<sigrok::Logic> logic);
 144
 145         void feed_in_analog(std::shared_ptr<sigrok::Analog> analog);
 146
 147         void data_feed_in(std::shared_ptr<sigrok::Device> device,
 148                 std::shared_ptr<sigrok::Packet> packet);
 149
 150 private:
 151         DeviceManager &device_manager_;
 152         std::shared_ptr<sigrok::Session> session_;
 153
 154         /**
 155          * The device instance that will be used in the next capture session.
 156          */
 157         std::shared_ptr<sigrok::Device> device_;
 158
 159         std::vector< std::shared_ptr<view::DecodeTrace> > decode_traces_;
 160
 161         mutable std::mutex sampling_mutex_;
 162         capture_state capture_state_;
 163
 164         mutable boost::shared_mutex signals_mutex_;
 165         std::vector< std::shared_ptr<view::Signal> > signals_;
 166
 167         mutable std::mutex data_mutex_;
 168         std::shared_ptr<data::Logic> logic_data_;
 169         std::shared_ptr<data::LogicSnapshot> cur_logic_snapshot_;
 170         std::map< std::shared_ptr<sigrok::Channel>, std::shared_ptr<data::AnalogSnapshot> >
 171                 cur_analog_snapshots_;
 172
 173         std::thread sampling_thread_;
 174
 175 Q_SIGNALS:
 176         void capture_state_changed(int state);
 177         void device_selected();
 178
 179         void signals_changed();
 180
 181         void frame_began();
 182
 183         void data_received();
 184
 185         void frame_ended();
 186 };
 187
 188 } // namespace pv
 189
 190 #endif // PULSEVIEW_PV_SIGSESSION_H