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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 <boost/function.hpp> | |
25 | #include <boost/shared_ptr.hpp> | |
26 | #include <boost/thread.hpp> | |
27 | ||
28 | #include <map> | |
29 | #include <set> | |
30 | #include <string> | |
31 | #include <vector> | |
32 | ||
33 | #include <QObject> | |
34 | #include <QString> | |
35 | ||
36 | #include <libsigrok/libsigrok.h> | |
37 | ||
38 | struct srd_decoder; | |
39 | struct srd_probe; | |
40 | ||
41 | namespace pv { | |
42 | ||
43 | class DeviceManager; | |
44 | ||
45 | namespace data { | |
46 | class Analog; | |
47 | class AnalogSnapshot; | |
48 | class Logic; | |
49 | class LogicSnapshot; | |
50 | class SignalData; | |
51 | } | |
52 | ||
53 | namespace device { | |
54 | class DevInst; | |
55 | } | |
56 | ||
57 | namespace view { | |
58 | class DecodeTrace; | |
59 | class LogicSignal; | |
60 | class Signal; | |
61 | } | |
62 | ||
63 | class SigSession : public QObject | |
64 | { | |
65 | Q_OBJECT | |
66 | ||
67 | public: | |
68 | enum capture_state { | |
69 | Stopped, | |
70 | AwaitingTrigger, | |
71 | Running | |
72 | }; | |
73 | ||
74 | public: | |
75 | SigSession(DeviceManager &device_manager); | |
76 | ||
77 | ~SigSession(); | |
78 | ||
79 | boost::shared_ptr<device::DevInst> get_device() const; | |
80 | ||
81 | /** | |
82 | * Sets device instance that will be used in the next capture session. | |
83 | */ | |
84 | void set_device(boost::shared_ptr<device::DevInst> dev_inst) | |
85 | throw(QString); | |
86 | ||
87 | void set_file(const std::string &name) | |
88 | throw(QString); | |
89 | ||
90 | void release_device(device::DevInst *dev_inst); | |
91 | ||
92 | capture_state get_capture_state() const; | |
93 | ||
94 | void start_capture(boost::function<void (const QString)> error_handler); | |
95 | ||
96 | void stop_capture(); | |
97 | ||
98 | std::set< boost::shared_ptr<data::SignalData> > get_data() const; | |
99 | ||
100 | std::vector< boost::shared_ptr<view::Signal> > | |
101 | get_signals() const; | |
102 | ||
103 | #ifdef ENABLE_DECODE | |
104 | bool add_decoder(srd_decoder *const dec); | |
105 | ||
106 | std::vector< boost::shared_ptr<view::DecodeTrace> > | |
107 | get_decode_signals() const; | |
108 | ||
109 | void remove_decode_signal(view::DecodeTrace *signal); | |
110 | #endif | |
111 | ||
112 | private: | |
113 | void set_capture_state(capture_state state); | |
114 | ||
115 | void update_signals(boost::shared_ptr<device::DevInst> dev_inst); | |
116 | ||
117 | void set_default_device(); | |
118 | ||
119 | boost::shared_ptr<view::Signal> signal_from_probe( | |
120 | const sr_probe *probe) const; | |
121 | ||
122 | void read_sample_rate(const sr_dev_inst *const sdi); | |
123 | ||
124 | private: | |
125 | /** | |
126 | * Attempts to autodetect the format. Failing that | |
127 | * @param filename The filename of the input file. | |
128 | * @return A pointer to the 'struct sr_input_format' that should be | |
129 | * used, or NULL if no input format was selected or | |
130 | * auto-detected. | |
131 | */ | |
132 | static sr_input_format* determine_input_file_format( | |
133 | const std::string &filename); | |
134 | ||
135 | static sr_input* load_input_file_format( | |
136 | const std::string &filename, | |
137 | boost::function<void (const QString)> error_handler, | |
138 | sr_input_format *format = NULL); | |
139 | ||
140 | void sample_thread_proc(boost::shared_ptr<device::DevInst> dev_inst, | |
141 | boost::function<void (const QString)> error_handler); | |
142 | ||
143 | void feed_in_header(const sr_dev_inst *sdi); | |
144 | ||
145 | void feed_in_meta(const sr_dev_inst *sdi, | |
146 | const sr_datafeed_meta &meta); | |
147 | ||
148 | void feed_in_frame_begin(); | |
149 | ||
150 | void feed_in_logic(const sr_datafeed_logic &logic); | |
151 | ||
152 | void feed_in_analog(const sr_datafeed_analog &analog); | |
153 | ||
154 | void data_feed_in(const struct sr_dev_inst *sdi, | |
155 | const struct sr_datafeed_packet *packet); | |
156 | ||
157 | static void data_feed_in_proc(const struct sr_dev_inst *sdi, | |
158 | const struct sr_datafeed_packet *packet, void *cb_data); | |
159 | ||
160 | private: | |
161 | DeviceManager &_device_manager; | |
162 | ||
163 | /** | |
164 | * The device instance that will be used in the next capture session. | |
165 | */ | |
166 | boost::shared_ptr<device::DevInst> _dev_inst; | |
167 | ||
168 | std::vector< boost::shared_ptr<view::DecodeTrace> > _decode_traces; | |
169 | ||
170 | mutable boost::mutex _sampling_mutex; | |
171 | capture_state _capture_state; | |
172 | ||
173 | mutable boost::mutex _signals_mutex; | |
174 | std::vector< boost::shared_ptr<view::Signal> > _signals; | |
175 | ||
176 | mutable boost::mutex _data_mutex; | |
177 | boost::shared_ptr<data::Logic> _logic_data; | |
178 | boost::shared_ptr<data::LogicSnapshot> _cur_logic_snapshot; | |
179 | std::map< const sr_probe*, boost::shared_ptr<data::AnalogSnapshot> > | |
180 | _cur_analog_snapshots; | |
181 | ||
182 | boost::thread _sampling_thread; | |
183 | ||
184 | signals: | |
185 | void capture_state_changed(int state); | |
186 | ||
187 | void signals_changed(); | |
188 | ||
189 | void frame_began(); | |
190 | ||
191 | void data_received(); | |
192 | ||
193 | void frame_ended(); | |
194 | ||
195 | private: | |
196 | // TODO: This should not be necessary. Multiple concurrent | |
197 | // sessions should should be supported and it should be | |
198 | // possible to associate a pointer with a sr_session. | |
199 | static SigSession *_session; | |
200 | }; | |
201 | ||
202 | } // namespace pv | |
203 | ||
204 | #endif // PULSEVIEW_PV_SIGSESSION_H |