2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
21 #include "sigsession.h"
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"
34 using namespace boost;
39 // TODO: This should not be necessary
40 SigSession* SigSession::_session = NULL;
42 SigSession::SigSession() :
44 _capture_state(Stopped)
46 // TODO: This should not be necessary
50 SigSession::~SigSession()
54 if (_sampling_thread.get())
55 _sampling_thread->join();
56 _sampling_thread.reset();
58 // TODO: This should not be necessary
62 struct sr_dev_inst* SigSession::get_device() const
67 void SigSession::set_device(struct sr_dev_inst *sdi)
72 void SigSession::load_file(const string &name,
73 function<void (const QString)> error_handler)
76 _sampling_thread.reset(new boost::thread(
77 &SigSession::load_thread_proc, this, name,
81 SigSession::capture_state SigSession::get_capture_state() const
83 lock_guard<mutex> lock(_sampling_mutex);
84 return _capture_state;
87 void SigSession::start_capture(uint64_t record_length,
88 function<void (const QString)> error_handler)
92 // Check that a device instance has been selected.
94 qDebug() << "No device selected";
98 // Check that at least one probe is enabled
100 for (l = _sdi->probes; l; l = l->next) {
101 sr_probe *const probe = (sr_probe*)l->data;
108 error_handler(tr("No probes enabled."));
113 _sampling_thread.reset(new boost::thread(
114 &SigSession::sample_thread_proc, this, _sdi,
115 record_length, error_handler));
118 void SigSession::stop_capture()
120 if (get_capture_state() == Stopped)
125 // Check that sampling stopped
126 if (_sampling_thread.get())
127 _sampling_thread->join();
128 _sampling_thread.reset();
131 vector< shared_ptr<view::Signal> > SigSession::get_signals()
133 lock_guard<mutex> lock(_signals_mutex);
137 boost::shared_ptr<data::Logic> SigSession::get_data()
142 void SigSession::set_capture_state(capture_state state)
144 lock_guard<mutex> lock(_sampling_mutex);
145 _capture_state = state;
146 capture_state_changed(state);
149 void SigSession::load_thread_proc(const string name,
150 function<void (const QString)> error_handler)
152 if (sr_session_load(name.c_str()) != SR_OK) {
153 error_handler(tr("Failed to load file."));
157 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
159 if (sr_session_start() != SR_OK) {
160 error_handler(tr("Failed to start session."));
164 set_capture_state(Running);
167 sr_session_destroy();
169 set_capture_state(Stopped);
172 void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
173 uint64_t record_length,
174 function<void (const QString)> error_handler)
177 assert(error_handler);
180 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
182 if (sr_session_dev_add(sdi) != SR_OK) {
183 error_handler(tr("Failed to use device."));
184 sr_session_destroy();
188 // Set the sample limit
189 if (sr_config_set(sdi, SR_CONF_LIMIT_SAMPLES,
190 g_variant_new_uint64(record_length)) != SR_OK) {
191 error_handler(tr("Failed to configure "
192 "time-based sample limit."));
193 sr_session_destroy();
197 if (sr_session_start() != SR_OK) {
198 error_handler(tr("Failed to start session."));
202 set_capture_state(Running);
205 sr_session_destroy();
207 set_capture_state(Stopped);
210 void SigSession::feed_in_header(const sr_dev_inst *sdi)
212 shared_ptr<view::Signal> signal;
214 uint64_t sample_rate = 0;
215 unsigned int logic_probe_count = 0;
216 unsigned int analog_probe_count = 0;
218 // Detect what data types we will receive
219 for (const GSList *l = sdi->probes; l; l = l->next) {
220 const sr_probe *const probe = (const sr_probe *)l->data;
224 switch(probe->type) {
229 case SR_PROBE_ANALOG:
230 analog_probe_count++;
235 // Read out the sample rate
238 const int ret = sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
241 qDebug("Failed to get samplerate\n");
245 sample_rate = g_variant_get_uint64(gvar);
246 g_variant_unref(gvar);
248 // Create data containers for the coming data snapshots
250 lock_guard<mutex> data_lock(_data_mutex);
252 if (logic_probe_count != 0) {
253 _logic_data.reset(new data::Logic(
254 logic_probe_count, sample_rate));
258 if (analog_probe_count != 0) {
259 _analog_data.reset(new data::Analog(sample_rate));
260 assert(_analog_data);
264 // Make the logic probe list
266 lock_guard<mutex> lock(_signals_mutex);
270 for (const GSList *l = sdi->probes; l; l = l->next) {
271 const sr_probe *const probe =
272 (const sr_probe *)l->data;
277 switch(probe->type) {
279 signal = shared_ptr<view::Signal>(
280 new view::LogicSignal(probe->name,
281 _logic_data, probe->index));
284 case SR_PROBE_ANALOG:
285 signal = shared_ptr<view::Signal>(
286 new view::AnalogSignal(probe->name,
287 _analog_data, probe->index));
291 _signals.push_back(signal);
298 void SigSession::feed_in_meta(const sr_dev_inst *sdi,
299 const sr_datafeed_meta &meta)
303 for (const GSList *l = meta.config; l; l = l->next) {
304 const sr_config *const src = (const sr_config*)l->data;
306 case SR_CONF_SAMPLERATE:
307 /// @todo handle samplerate changes
308 /// samplerate = (uint64_t *)src->value;
311 // Unknown metadata is not an error.
317 void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
319 lock_guard<mutex> lock(_data_mutex);
323 qDebug() << "Unexpected logic packet";
327 if (!_cur_logic_snapshot)
329 // Create a new data snapshot
330 _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
331 new data::LogicSnapshot(logic));
332 _logic_data->push_snapshot(_cur_logic_snapshot);
336 // Append to the existing data snapshot
337 _cur_logic_snapshot->append_payload(logic);
343 void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
345 lock_guard<mutex> lock(_data_mutex);
349 qDebug() << "Unexpected analog packet";
350 return; // This analog packet was not expected.
353 if (!_cur_analog_snapshot)
355 // Create a new data snapshot
356 _cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
357 new data::AnalogSnapshot(analog));
358 _analog_data->push_snapshot(_cur_analog_snapshot);
362 // Append to the existing data snapshot
363 _cur_analog_snapshot->append_payload(analog);
369 void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
370 const struct sr_datafeed_packet *packet)
375 switch (packet->type) {
381 assert(packet->payload);
383 *(const sr_datafeed_meta*)packet->payload);
387 assert(packet->payload);
388 feed_in_logic(*(const sr_datafeed_logic*)packet->payload);
392 assert(packet->payload);
393 feed_in_analog(*(const sr_datafeed_analog*)packet->payload);
399 lock_guard<mutex> lock(_data_mutex);
400 _cur_logic_snapshot.reset();
401 _cur_analog_snapshot.reset();
409 void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi,
410 const struct sr_datafeed_packet *packet, void *cb_data)
414 _session->data_feed_in(sdi, packet);