]>
Commit | Line | Data |
---|---|---|
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 | #include "sigsession.h" | |
22 | ||
23 | #include "logicdata.h" | |
24 | #include "logicdatasnapshot.h" | |
25 | #include "view/logicsignal.h" | |
26 | ||
27 | #include <QDebug> | |
28 | ||
29 | #include <assert.h> | |
30 | ||
31 | using namespace boost; | |
32 | using namespace std; | |
33 | ||
34 | namespace pv { | |
35 | ||
36 | // TODO: This should not be necessary | |
37 | SigSession* SigSession::_session = NULL; | |
38 | ||
39 | SigSession::SigSession() : | |
40 | _capture_state(Stopped) | |
41 | { | |
42 | // TODO: This should not be necessary | |
43 | _session = this; | |
44 | } | |
45 | ||
46 | SigSession::~SigSession() | |
47 | { | |
48 | stop_capture(); | |
49 | ||
50 | if(_sampling_thread.get()) | |
51 | _sampling_thread->join(); | |
52 | _sampling_thread.reset(); | |
53 | ||
54 | // TODO: This should not be necessary | |
55 | _session = NULL; | |
56 | } | |
57 | ||
58 | void SigSession::load_file(const std::string &name) | |
59 | { | |
60 | if (sr_session_load(name.c_str()) == SR_OK) { | |
61 | /* sigrok session file */ | |
62 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
63 | sr_session_start(); | |
64 | sr_session_run(); | |
65 | sr_session_stop(); | |
66 | } | |
67 | } | |
68 | ||
69 | SigSession::capture_state SigSession::get_capture_state() const | |
70 | { | |
71 | lock_guard<mutex> lock(_state_mutex); | |
72 | return _capture_state; | |
73 | } | |
74 | ||
75 | void SigSession::start_capture(struct sr_dev_inst *sdi, | |
76 | uint64_t record_length, uint64_t sample_rate) | |
77 | { | |
78 | stop_capture(); | |
79 | ||
80 | ||
81 | _sampling_thread.reset(new boost::thread( | |
82 | &SigSession::sample_thread_proc, this, sdi, | |
83 | record_length, sample_rate)); | |
84 | } | |
85 | ||
86 | void SigSession::stop_capture() | |
87 | { | |
88 | if(get_capture_state() == Stopped) | |
89 | return; | |
90 | ||
91 | sr_session_stop(); | |
92 | ||
93 | // Check that sampling stopped | |
94 | if(_sampling_thread.get()) | |
95 | _sampling_thread->join(); | |
96 | _sampling_thread.reset(); | |
97 | } | |
98 | ||
99 | vector< shared_ptr<view::Signal> > SigSession::get_signals() | |
100 | { | |
101 | lock_guard<mutex> lock(_signals_mutex); | |
102 | return _signals; | |
103 | } | |
104 | ||
105 | boost::shared_ptr<LogicData> SigSession::get_data() | |
106 | { | |
107 | return _logic_data; | |
108 | } | |
109 | ||
110 | void SigSession::set_capture_state(capture_state state) | |
111 | { | |
112 | lock_guard<mutex> lock(_state_mutex); | |
113 | _capture_state = state; | |
114 | capture_state_changed(state); | |
115 | } | |
116 | ||
117 | void SigSession::sample_thread_proc(struct sr_dev_inst *sdi, | |
118 | uint64_t record_length, uint64_t sample_rate) | |
119 | { | |
120 | sr_session_new(); | |
121 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
122 | ||
123 | if (sr_session_dev_add(sdi) != SR_OK) { | |
124 | qDebug() << "Failed to use device."; | |
125 | sr_session_destroy(); | |
126 | return; | |
127 | } | |
128 | ||
129 | if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES, | |
130 | &record_length) != SR_OK) { | |
131 | qDebug() << "Failed to configure time-based sample limit."; | |
132 | sr_session_destroy(); | |
133 | return; | |
134 | } | |
135 | ||
136 | if (sr_dev_config_set(sdi, SR_HWCAP_SAMPLERATE, | |
137 | &sample_rate) != SR_OK) { | |
138 | qDebug() << "Failed to configure samplerate."; | |
139 | sr_session_destroy(); | |
140 | return; | |
141 | } | |
142 | ||
143 | if (sr_session_start() != SR_OK) { | |
144 | qDebug() << "Failed to start session."; | |
145 | return; | |
146 | } | |
147 | ||
148 | set_capture_state(Running); | |
149 | ||
150 | sr_session_run(); | |
151 | sr_session_destroy(); | |
152 | ||
153 | set_capture_state(Stopped); | |
154 | } | |
155 | ||
156 | void SigSession::data_feed_in(const struct sr_dev_inst *sdi, | |
157 | struct sr_datafeed_packet *packet) | |
158 | { | |
159 | using view::LogicSignal; | |
160 | ||
161 | assert(sdi); | |
162 | assert(packet); | |
163 | ||
164 | switch (packet->type) { | |
165 | case SR_DF_HEADER: | |
166 | { | |
167 | lock_guard<mutex> lock(_signals_mutex); | |
168 | _signals.clear(); | |
169 | break; | |
170 | } | |
171 | ||
172 | case SR_DF_META_LOGIC: | |
173 | { | |
174 | assert(packet->payload); | |
175 | const sr_datafeed_meta_logic &meta_logic = | |
176 | *(sr_datafeed_meta_logic*)packet->payload; | |
177 | ||
178 | { | |
179 | lock_guard<mutex> lock(_data_mutex); | |
180 | ||
181 | // Create an empty LogiData for coming data snapshots | |
182 | _logic_data.reset(new LogicData(meta_logic)); | |
183 | assert(_logic_data); | |
184 | if(!_logic_data) | |
185 | break; | |
186 | } | |
187 | ||
188 | { | |
189 | lock_guard<mutex> lock(_signals_mutex); | |
190 | ||
191 | // Add the signals | |
192 | for (int i = 0; i < meta_logic.num_probes; i++) | |
193 | { | |
194 | const sr_probe *const probe = | |
195 | (const sr_probe*)g_slist_nth_data( | |
196 | sdi->probes, i); | |
197 | if(probe->enabled) | |
198 | { | |
199 | shared_ptr<LogicSignal> signal( | |
200 | new LogicSignal(probe->name, | |
201 | _logic_data, | |
202 | probe->index)); | |
203 | _signals.push_back(signal); | |
204 | } | |
205 | } | |
206 | ||
207 | signals_changed(); | |
208 | break; | |
209 | } | |
210 | } | |
211 | ||
212 | case SR_DF_LOGIC: | |
213 | { | |
214 | lock_guard<mutex> lock(_data_mutex); | |
215 | assert(packet->payload); | |
216 | if(!_cur_logic_snapshot) | |
217 | { | |
218 | // Create a new data snapshot | |
219 | _cur_logic_snapshot = shared_ptr<LogicDataSnapshot>( | |
220 | new LogicDataSnapshot( | |
221 | *(sr_datafeed_logic*)packet->payload)); | |
222 | _logic_data->push_snapshot(_cur_logic_snapshot); | |
223 | } | |
224 | else | |
225 | { | |
226 | // Append to the existing data snapshot | |
227 | _cur_logic_snapshot->append_payload( | |
228 | *(sr_datafeed_logic*)packet->payload); | |
229 | } | |
230 | ||
231 | data_updated(); | |
232 | break; | |
233 | } | |
234 | ||
235 | case SR_DF_END: | |
236 | { | |
237 | { | |
238 | lock_guard<mutex> lock(_data_mutex); | |
239 | _cur_logic_snapshot.reset(); | |
240 | } | |
241 | data_updated(); | |
242 | break; | |
243 | } | |
244 | } | |
245 | } | |
246 | ||
247 | void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi, | |
248 | struct sr_datafeed_packet *packet) | |
249 | { | |
250 | assert(_session); | |
251 | _session->data_feed_in(sdi, packet); | |
252 | } | |
253 | ||
254 | } // namespace pv |