Deleted unused pv::view::Viewport::mouseReleaseEvent handler
[pulseview.git] / pv / sigsession.cpp
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 = NULL;
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