]>
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 "data/analog.h" | |
24 | #include "data/analogsnapshot.h" | |
25 | #include "data/logic.h" | |
26 | #include "data/logicsnapshot.h" | |
27 | #include "view/analogsignal.h" | |
28 | #include "view/logicsignal.h" | |
29 | ||
30 | #include <QDebug> | |
31 | ||
32 | #include <assert.h> | |
33 | ||
34 | using namespace boost; | |
35 | using namespace std; | |
36 | ||
37 | namespace pv { | |
38 | ||
39 | // TODO: This should not be necessary | |
40 | SigSession* SigSession::_session = NULL; | |
41 | ||
42 | SigSession::SigSession() : | |
43 | _capture_state(Stopped) | |
44 | { | |
45 | // TODO: This should not be necessary | |
46 | _session = this; | |
47 | } | |
48 | ||
49 | SigSession::~SigSession() | |
50 | { | |
51 | stop_capture(); | |
52 | ||
53 | if (_sampling_thread.get()) | |
54 | _sampling_thread->join(); | |
55 | _sampling_thread.reset(); | |
56 | ||
57 | // TODO: This should not be necessary | |
58 | _session = NULL; | |
59 | } | |
60 | ||
61 | void SigSession::load_file(const string &name) | |
62 | { | |
63 | stop_capture(); | |
64 | _sampling_thread.reset(new boost::thread( | |
65 | &SigSession::load_thread_proc, this, name)); | |
66 | } | |
67 | ||
68 | SigSession::capture_state SigSession::get_capture_state() const | |
69 | { | |
70 | lock_guard<mutex> lock(_sampling_mutex); | |
71 | return _capture_state; | |
72 | } | |
73 | ||
74 | void SigSession::start_capture(struct sr_dev_inst *sdi, | |
75 | uint64_t record_length) | |
76 | { | |
77 | stop_capture(); | |
78 | ||
79 | _sampling_thread.reset(new boost::thread( | |
80 | &SigSession::sample_thread_proc, this, sdi, | |
81 | record_length)); | |
82 | } | |
83 | ||
84 | void SigSession::stop_capture() | |
85 | { | |
86 | if (get_capture_state() == Stopped) | |
87 | return; | |
88 | ||
89 | sr_session_stop(); | |
90 | ||
91 | // Check that sampling stopped | |
92 | if (_sampling_thread.get()) | |
93 | _sampling_thread->join(); | |
94 | _sampling_thread.reset(); | |
95 | } | |
96 | ||
97 | vector< shared_ptr<view::Signal> > SigSession::get_signals() | |
98 | { | |
99 | lock_guard<mutex> lock(_signals_mutex); | |
100 | return _signals; | |
101 | } | |
102 | ||
103 | boost::shared_ptr<data::Logic> SigSession::get_data() | |
104 | { | |
105 | return _logic_data; | |
106 | } | |
107 | ||
108 | void SigSession::set_capture_state(capture_state state) | |
109 | { | |
110 | lock_guard<mutex> lock(_sampling_mutex); | |
111 | _capture_state = state; | |
112 | capture_state_changed(state); | |
113 | } | |
114 | ||
115 | void SigSession::load_thread_proc(const string name) | |
116 | { | |
117 | if (sr_session_load(name.c_str()) != SR_OK) { | |
118 | qDebug() << "Failed to load file."; | |
119 | return; | |
120 | } | |
121 | ||
122 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
123 | ||
124 | if (sr_session_start() != SR_OK) { | |
125 | qDebug() << "Failed to start session."; | |
126 | return; | |
127 | } | |
128 | ||
129 | set_capture_state(Running); | |
130 | ||
131 | sr_session_run(); | |
132 | sr_session_stop(); | |
133 | ||
134 | set_capture_state(Stopped); | |
135 | } | |
136 | ||
137 | void SigSession::sample_thread_proc(struct sr_dev_inst *sdi, | |
138 | uint64_t record_length) | |
139 | { | |
140 | assert(sdi); | |
141 | ||
142 | sr_session_new(); | |
143 | sr_session_datafeed_callback_add(data_feed_in_proc); | |
144 | ||
145 | if (sr_session_dev_add(sdi) != SR_OK) { | |
146 | qDebug() << "Failed to use device."; | |
147 | sr_session_destroy(); | |
148 | return; | |
149 | } | |
150 | ||
151 | // Set the sample limit | |
152 | if (sr_config_set(sdi, SR_CONF_LIMIT_SAMPLES, | |
153 | &record_length) != SR_OK) { | |
154 | qDebug() << "Failed to configure time-based sample limit."; | |
155 | sr_session_destroy(); | |
156 | return; | |
157 | } | |
158 | ||
159 | if (sr_session_start() != SR_OK) { | |
160 | qDebug() << "Failed to start session."; | |
161 | return; | |
162 | } | |
163 | ||
164 | set_capture_state(Running); | |
165 | ||
166 | sr_session_run(); | |
167 | sr_session_destroy(); | |
168 | ||
169 | set_capture_state(Stopped); | |
170 | } | |
171 | ||
172 | void SigSession::feed_in_header(const sr_dev_inst *sdi) | |
173 | { | |
174 | shared_ptr<view::Signal> signal; | |
175 | uint64_t *sample_rate; | |
176 | unsigned int logic_probe_count = 0; | |
177 | unsigned int analog_probe_count = 0; | |
178 | ||
179 | // Detect what data types we will receive | |
180 | for (const GSList *l = sdi->probes; l; l = l->next) { | |
181 | const sr_probe *const probe = (const sr_probe *)l->data; | |
182 | if (!probe->enabled) | |
183 | continue; | |
184 | ||
185 | switch(probe->type) { | |
186 | case SR_PROBE_LOGIC: | |
187 | logic_probe_count++; | |
188 | break; | |
189 | ||
190 | case SR_PROBE_ANALOG: | |
191 | analog_probe_count++; | |
192 | break; | |
193 | } | |
194 | } | |
195 | ||
196 | // Read out the sample rate | |
197 | assert(sdi->driver); | |
198 | assert(sr_config_get(sdi->driver, SR_CONF_SAMPLERATE, | |
199 | (const void**)&sample_rate, sdi) == SR_OK); | |
200 | ||
201 | // Create data containers for the coming data snapshots | |
202 | { | |
203 | lock_guard<mutex> data_lock(_data_mutex); | |
204 | ||
205 | if (logic_probe_count != 0) { | |
206 | _logic_data.reset(new data::Logic( | |
207 | logic_probe_count, *sample_rate)); | |
208 | assert(_logic_data); | |
209 | } | |
210 | ||
211 | if (analog_probe_count != 0) { | |
212 | _analog_data.reset(new data::Analog(*sample_rate)); | |
213 | assert(_analog_data); | |
214 | } | |
215 | } | |
216 | ||
217 | // Make the logic probe list | |
218 | { | |
219 | lock_guard<mutex> lock(_signals_mutex); | |
220 | ||
221 | _signals.clear(); | |
222 | ||
223 | for (const GSList *l = sdi->probes; l; l = l->next) { | |
224 | const sr_probe *const probe = | |
225 | (const sr_probe *)l->data; | |
226 | assert(probe); | |
227 | if (!probe->enabled) | |
228 | continue; | |
229 | ||
230 | switch(probe->type) { | |
231 | case SR_PROBE_LOGIC: | |
232 | signal = shared_ptr<view::Signal>( | |
233 | new view::LogicSignal(probe->name, | |
234 | _logic_data, probe->index)); | |
235 | break; | |
236 | ||
237 | case SR_PROBE_ANALOG: | |
238 | signal = shared_ptr<view::Signal>( | |
239 | new view::AnalogSignal(probe->name, | |
240 | _analog_data)); | |
241 | break; | |
242 | } | |
243 | ||
244 | _signals.push_back(signal); | |
245 | } | |
246 | ||
247 | signals_changed(); | |
248 | } | |
249 | } | |
250 | ||
251 | void SigSession::feed_in_meta(const sr_dev_inst *sdi, | |
252 | const sr_datafeed_meta &meta) | |
253 | { | |
254 | (void)sdi; | |
255 | ||
256 | for (const GSList *l = meta.config; l; l = l->next) { | |
257 | const sr_config *const src = (const sr_config*)l->data; | |
258 | switch (src->key) { | |
259 | case SR_CONF_SAMPLERATE: | |
260 | /// @todo handle samplerate changes | |
261 | /// samplerate = (uint64_t *)src->value; | |
262 | break; | |
263 | default: | |
264 | // Unknown metadata is not an error. | |
265 | break; | |
266 | } | |
267 | } | |
268 | } | |
269 | ||
270 | void SigSession::feed_in_logic(const sr_datafeed_logic &logic) | |
271 | { | |
272 | lock_guard<mutex> lock(_data_mutex); | |
273 | if (!_cur_logic_snapshot) | |
274 | { | |
275 | assert(_logic_data); | |
276 | ||
277 | // Create a new data snapshot | |
278 | _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>( | |
279 | new data::LogicSnapshot(logic)); | |
280 | _logic_data->push_snapshot(_cur_logic_snapshot); | |
281 | } | |
282 | else | |
283 | { | |
284 | // Append to the existing data snapshot | |
285 | _cur_logic_snapshot->append_payload(logic); | |
286 | } | |
287 | ||
288 | data_updated(); | |
289 | } | |
290 | ||
291 | void SigSession::feed_in_analog(const sr_datafeed_analog &analog) | |
292 | { | |
293 | lock_guard<mutex> lock(_data_mutex); | |
294 | if (!_cur_analog_snapshot) | |
295 | { | |
296 | assert(_analog_data); | |
297 | ||
298 | // Create a new data snapshot | |
299 | _cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>( | |
300 | new data::AnalogSnapshot(analog)); | |
301 | _analog_data->push_snapshot(_cur_analog_snapshot); | |
302 | } | |
303 | else | |
304 | { | |
305 | // Append to the existing data snapshot | |
306 | _cur_analog_snapshot->append_payload(analog); | |
307 | } | |
308 | ||
309 | data_updated(); | |
310 | } | |
311 | ||
312 | void SigSession::data_feed_in(const struct sr_dev_inst *sdi, | |
313 | const struct sr_datafeed_packet *packet) | |
314 | { | |
315 | assert(sdi); | |
316 | assert(packet); | |
317 | ||
318 | switch (packet->type) { | |
319 | case SR_DF_HEADER: | |
320 | feed_in_header(sdi); | |
321 | break; | |
322 | ||
323 | case SR_DF_META: | |
324 | assert(packet->payload); | |
325 | feed_in_meta(sdi, | |
326 | *(const sr_datafeed_meta*)packet->payload); | |
327 | break; | |
328 | ||
329 | case SR_DF_LOGIC: | |
330 | assert(packet->payload); | |
331 | feed_in_logic(*(const sr_datafeed_logic*)packet->payload); | |
332 | break; | |
333 | ||
334 | case SR_DF_ANALOG: | |
335 | assert(packet->payload); | |
336 | feed_in_analog(*(const sr_datafeed_analog*)packet->payload); | |
337 | break; | |
338 | ||
339 | case SR_DF_END: | |
340 | { | |
341 | { | |
342 | lock_guard<mutex> lock(_data_mutex); | |
343 | _cur_logic_snapshot.reset(); | |
344 | _cur_analog_snapshot.reset(); | |
345 | } | |
346 | data_updated(); | |
347 | break; | |
348 | } | |
349 | } | |
350 | } | |
351 | ||
352 | void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi, | |
353 | const struct sr_datafeed_packet *packet) | |
354 | { | |
355 | assert(_session); | |
356 | _session->data_feed_in(sdi, packet); | |
357 | } | |
358 | ||
359 | } // namespace pv |