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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 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 <string> | |
29 | #include <utility> | |
30 | #include <vector> | |
31 | ||
32 | #include <QObject> | |
33 | #include <QString> | |
34 | ||
35 | #include <libsigrok/libsigrok.h> | |
36 | ||
37 | namespace pv { | |
38 | ||
39 | class DeviceManager; | |
40 | ||
41 | namespace data { | |
42 | class Analog; | |
43 | class AnalogSnapshot; | |
44 | class Logic; | |
45 | class LogicSnapshot; | |
46 | } | |
47 | ||
48 | namespace view { | |
49 | class Signal; | |
50 | } | |
51 | ||
52 | class SigSession : public QObject | |
53 | { | |
54 | Q_OBJECT | |
55 | ||
56 | public: | |
57 | enum capture_state { | |
58 | Stopped, | |
59 | AwaitingTrigger, | |
60 | Running | |
61 | }; | |
62 | ||
63 | public: | |
64 | SigSession(DeviceManager &device_manager); | |
65 | ||
66 | ~SigSession(); | |
67 | ||
68 | struct sr_dev_inst* get_device() const; | |
69 | ||
70 | /** | |
71 | * Sets device instance that will be used in the next capture session. | |
72 | */ | |
73 | void set_device(struct sr_dev_inst *sdi); | |
74 | ||
75 | void release_device(struct sr_dev_inst *sdi); | |
76 | ||
77 | void load_file(const std::string &name, | |
78 | boost::function<void (const QString)> error_handler); | |
79 | ||
80 | capture_state get_capture_state() const; | |
81 | ||
82 | void start_capture(uint64_t record_length, | |
83 | boost::function<void (const QString)> error_handler); | |
84 | ||
85 | void stop_capture(); | |
86 | ||
87 | std::vector< boost::shared_ptr<view::Signal> > | |
88 | get_signals(); | |
89 | ||
90 | boost::shared_ptr<data::Logic> get_data(); | |
91 | ||
92 | private: | |
93 | void set_capture_state(capture_state state); | |
94 | ||
95 | void update_signals(const sr_dev_inst *const sdi); | |
96 | ||
97 | bool is_trigger_enabled() const; | |
98 | ||
99 | void read_sample_rate(const sr_dev_inst *const sdi); | |
100 | ||
101 | private: | |
102 | /** | |
103 | * Attempts to autodetect the format. Failing that | |
104 | * @param filename The filename of the input file. | |
105 | * @return A pointer to the 'struct sr_input_format' that should be | |
106 | * used, or NULL if no input format was selected or | |
107 | * auto-detected. | |
108 | */ | |
109 | static sr_input_format* determine_input_file_format( | |
110 | const std::string &filename); | |
111 | ||
112 | static sr_input* load_input_file_format( | |
113 | const std::string &filename, | |
114 | boost::function<void (const QString)> error_handler, | |
115 | sr_input_format *format = NULL); | |
116 | ||
117 | void load_session_thread_proc( | |
118 | boost::function<void (const QString)> error_handler); | |
119 | ||
120 | void load_input_thread_proc(const std::string name, sr_input *in, | |
121 | boost::function<void (const QString)> error_handler); | |
122 | ||
123 | void sample_thread_proc(struct sr_dev_inst *sdi, | |
124 | uint64_t record_length, | |
125 | boost::function<void (const QString)> error_handler); | |
126 | ||
127 | void feed_in_header(const sr_dev_inst *sdi); | |
128 | ||
129 | void feed_in_meta(const sr_dev_inst *sdi, | |
130 | const sr_datafeed_meta &meta); | |
131 | ||
132 | void feed_in_logic(const sr_datafeed_logic &logic); | |
133 | ||
134 | void feed_in_analog(const sr_datafeed_analog &analog); | |
135 | ||
136 | void data_feed_in(const struct sr_dev_inst *sdi, | |
137 | const struct sr_datafeed_packet *packet); | |
138 | ||
139 | static void data_feed_in_proc(const struct sr_dev_inst *sdi, | |
140 | const struct sr_datafeed_packet *packet, void *cb_data); | |
141 | ||
142 | private: | |
143 | DeviceManager &_device_manager; | |
144 | ||
145 | /** | |
146 | * The device instance that will be used in the next capture session. | |
147 | */ | |
148 | struct sr_dev_inst *_sdi; | |
149 | ||
150 | mutable boost::mutex _sampling_mutex; | |
151 | capture_state _capture_state; | |
152 | ||
153 | mutable boost::mutex _signals_mutex; | |
154 | std::vector< boost::shared_ptr<view::Signal> > _signals; | |
155 | ||
156 | mutable boost::mutex _data_mutex; | |
157 | boost::shared_ptr<data::Logic> _logic_data; | |
158 | boost::shared_ptr<data::LogicSnapshot> _cur_logic_snapshot; | |
159 | boost::shared_ptr<data::Analog> _analog_data; | |
160 | boost::shared_ptr<data::AnalogSnapshot> _cur_analog_snapshot; | |
161 | ||
162 | std::auto_ptr<boost::thread> _sampling_thread; | |
163 | ||
164 | signals: | |
165 | void capture_state_changed(int state); | |
166 | ||
167 | void signals_changed(); | |
168 | ||
169 | void data_updated(); | |
170 | ||
171 | private: | |
172 | // TODO: This should not be necessary. Multiple concurrent | |
173 | // sessions should should be supported and it should be | |
174 | // possible to associate a pointer with a sr_session. | |
175 | static SigSession *_session; | |
176 | }; | |
177 | ||
178 | } // namespace pv | |
179 | ||
180 | #endif // PULSEVIEW_PV_SIGSESSION_H |