pv/sigsession.h

   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 <QObject>
  33 #include <QString>
  34
  35 struct srd_decoder;
  36 struct srd_channel;
  37
  38 namespace sigrok {
  39         class Analog;
  40         class Channel;
  41         class Device;
  42         class Logic;
  43         class Meta;
  44         class Packet;
  45         class Session;
  46 }
  47
  48 namespace pv {
  49
  50 class DeviceManager;
  51
  52 namespace data {
  53 class Analog;
  54 class AnalogSnapshot;
  55 class Logic;
  56 class LogicSnapshot;
  57 class SignalData;
  58 }
  59
  60 namespace view {
  61 class DecodeTrace;
  62 class LogicSignal;
  63 class Signal;
  64 }
  65
  66 class SigSession : public QObject
  67 {
  68         Q_OBJECT
  69
  70 public:
  71         enum capture_state {
  72                 Stopped,
  73                 AwaitingTrigger,
  74                 Running
  75         };
  76
  77 public:
  78         SigSession(DeviceManager &device_manager);
  79
  80         ~SigSession();
  81
  82         DeviceManager& device_manager();
  83
  84         const DeviceManager& device_manager() const;
  85
  86         const std::shared_ptr<sigrok::Session>& session() const;
  87
  88         std::shared_ptr<sigrok::Device> device() const;
  89
  90         /**
  91          * Sets device instance that will be used in the next capture session.
  92          */
  93         void set_device(std::shared_ptr<sigrok::Device> device);
  94
  95         void set_file(const std::string &name);
  96
  97         void set_default_device();
  98
  99         capture_state get_capture_state() const;
 100
 101         void start_capture(std::function<void (const QString)> error_handler);
 102
 103         void stop_capture();
 104
 105         std::set< std::shared_ptr<data::SignalData> > get_data() const;
 106
 107         std::mutex& signals_mutex() const;
 108
 109         const std::vector< std::shared_ptr<view::Signal> >& signals() const;
 110
 111 #ifdef ENABLE_DECODE
 112         bool add_decoder(srd_decoder *const dec);
 113
 114         std::vector< std::shared_ptr<view::DecodeTrace> >
 115                 get_decode_signals() const;
 116
 117         void remove_decode_signal(view::DecodeTrace *signal);
 118 #endif
 119
 120 private:
 121         void set_capture_state(capture_state state);
 122
 123         void update_signals(std::shared_ptr<sigrok::Device> device);
 124
 125         std::shared_ptr<view::Signal> signal_from_channel(
 126                 std::shared_ptr<sigrok::Channel> channel) const;
 127
 128         void read_sample_rate(std::shared_ptr<sigrok::Device>);
 129
 130 private:
 131         void sample_thread_proc(std::shared_ptr<sigrok::Device> device,
 132                 std::function<void (const QString)> error_handler);
 133
 134         void feed_in_header(std::shared_ptr<sigrok::Device> device);
 135
 136         void feed_in_meta(std::shared_ptr<sigrok::Device> device,
 137                 std::shared_ptr<sigrok::Meta> meta);
 138
 139         void feed_in_frame_begin();
 140
 141         void feed_in_logic(std::shared_ptr<sigrok::Logic> logic);
 142
 143         void feed_in_analog(std::shared_ptr<sigrok::Analog> analog);
 144
 145         void data_feed_in(std::shared_ptr<sigrok::Device> device,
 146                 std::shared_ptr<sigrok::Packet> packet);
 147
 148 private:
 149         DeviceManager &_device_manager;
 150         std::shared_ptr<sigrok::Session> _session;
 151
 152         /**
 153          * The device instance that will be used in the next capture session.
 154          */
 155         std::shared_ptr<sigrok::Device> _device;
 156
 157         std::vector< std::shared_ptr<view::DecodeTrace> > _decode_traces;
 158
 159         mutable std::mutex _sampling_mutex;
 160         capture_state _capture_state;
 161
 162         mutable std::mutex _signals_mutex;
 163         std::vector< std::shared_ptr<view::Signal> > _signals;
 164
 165         mutable std::mutex _data_mutex;
 166         std::shared_ptr<data::Logic> _logic_data;
 167         std::shared_ptr<data::LogicSnapshot> _cur_logic_snapshot;
 168         std::map< std::shared_ptr<sigrok::Channel>, std::shared_ptr<data::AnalogSnapshot> >
 169                 _cur_analog_snapshots;
 170
 171         std::thread _sampling_thread;
 172
 173 Q_SIGNALS:
 174         void capture_state_changed(int state);
 175
 176         void signals_changed();
 177
 178         void frame_began();
 179
 180         void data_received();
 181
 182         void frame_ended();
 183 };
 184
 185 } // namespace pv
 186
 187 #endif // PULSEVIEW_PV_SIGSESSION_H