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 void SigSession::set_device(struct sr_dev_inst *sdi)
71 void SigSession::load_file(const string &name,
72 function<void (const QString)> error_handler)
75 _sampling_thread.reset(new boost::thread(
76 &SigSession::load_thread_proc, this, name,
80 SigSession::capture_state SigSession::get_capture_state() const
82 lock_guard<mutex> lock(_sampling_mutex);
83 return _capture_state;
86 void SigSession::start_capture(uint64_t record_length,
87 function<void (const QString)> error_handler)
91 // Check that a device instance has been selected.
93 qDebug() << "No device selected";
97 // Check that at least one probe is enabled
99 for (l = _sdi->probes; l; l = l->next) {
100 sr_probe *const probe = (sr_probe*)l->data;
107 error_handler(tr("No probes enabled."));
112 _sampling_thread.reset(new boost::thread(
113 &SigSession::sample_thread_proc, this, _sdi,
114 record_length, error_handler));
117 void SigSession::stop_capture()
119 if (get_capture_state() == Stopped)
124 // Check that sampling stopped
125 if (_sampling_thread.get())
126 _sampling_thread->join();
127 _sampling_thread.reset();
130 vector< shared_ptr<view::Signal> > SigSession::get_signals()
132 lock_guard<mutex> lock(_signals_mutex);
136 boost::shared_ptr<data::Logic> SigSession::get_data()
141 void SigSession::set_capture_state(capture_state state)
143 lock_guard<mutex> lock(_sampling_mutex);
144 _capture_state = state;
145 capture_state_changed(state);
148 void SigSession::load_thread_proc(const string name,
149 function<void (const QString)> error_handler)
151 if (sr_session_load(name.c_str()) != SR_OK) {
152 error_handler(tr("Failed to load file."));
156 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
158 if (sr_session_start() != SR_OK) {
159 error_handler(tr("Failed to start session."));
163 set_capture_state(Running);
166 sr_session_destroy();
168 set_capture_state(Stopped);
170 // Confirm that SR_DF_END was received
171 assert(!_cur_logic_snapshot);
172 assert(!_cur_analog_snapshot);
175 void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
176 uint64_t record_length,
177 function<void (const QString)> error_handler)
180 assert(error_handler);
183 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
185 if (sr_session_dev_add(sdi) != SR_OK) {
186 error_handler(tr("Failed to use device."));
187 sr_session_destroy();
191 // Set the sample limit
192 if (sr_config_set(sdi, SR_CONF_LIMIT_SAMPLES,
193 g_variant_new_uint64(record_length)) != SR_OK) {
194 error_handler(tr("Failed to configure "
195 "time-based sample limit."));
196 sr_session_destroy();
200 if (sr_session_start() != SR_OK) {
201 error_handler(tr("Failed to start session."));
205 set_capture_state(Running);
208 sr_session_destroy();
210 set_capture_state(Stopped);
212 // Confirm that SR_DF_END was received
213 assert(!_cur_logic_snapshot);
214 assert(!_cur_analog_snapshot);
217 void SigSession::feed_in_header(const sr_dev_inst *sdi)
219 shared_ptr<view::Signal> signal;
221 uint64_t sample_rate = 0;
222 unsigned int logic_probe_count = 0;
223 unsigned int analog_probe_count = 0;
225 // Detect what data types we will receive
226 for (const GSList *l = sdi->probes; l; l = l->next) {
227 const sr_probe *const probe = (const sr_probe *)l->data;
231 switch(probe->type) {
236 case SR_PROBE_ANALOG:
237 analog_probe_count++;
242 // Read out the sample rate
245 const int ret = sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
248 qDebug("Failed to get samplerate\n");
252 sample_rate = g_variant_get_uint64(gvar);
253 g_variant_unref(gvar);
255 // Create data containers for the coming data snapshots
257 lock_guard<mutex> data_lock(_data_mutex);
259 if (logic_probe_count != 0) {
260 _logic_data.reset(new data::Logic(
261 logic_probe_count, sample_rate));
265 if (analog_probe_count != 0) {
266 _analog_data.reset(new data::Analog(sample_rate));
267 assert(_analog_data);
271 // Make the logic probe list
273 lock_guard<mutex> lock(_signals_mutex);
277 for (const GSList *l = sdi->probes; l; l = l->next) {
278 const sr_probe *const probe =
279 (const sr_probe *)l->data;
284 switch(probe->type) {
286 signal = shared_ptr<view::Signal>(
287 new view::LogicSignal(probe->name,
288 _logic_data, probe->index));
291 case SR_PROBE_ANALOG:
292 signal = shared_ptr<view::Signal>(
293 new view::AnalogSignal(probe->name,
294 _analog_data, probe->index));
298 _signals.push_back(signal);
305 void SigSession::feed_in_meta(const sr_dev_inst *sdi,
306 const sr_datafeed_meta &meta)
310 for (const GSList *l = meta.config; l; l = l->next) {
311 const sr_config *const src = (const sr_config*)l->data;
313 case SR_CONF_SAMPLERATE:
314 /// @todo handle samplerate changes
315 /// samplerate = (uint64_t *)src->value;
318 // Unknown metadata is not an error.
324 void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
326 lock_guard<mutex> lock(_data_mutex);
330 qDebug() << "Unexpected logic packet";
334 if (!_cur_logic_snapshot)
336 // Create a new data snapshot
337 _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
338 new data::LogicSnapshot(logic));
339 _logic_data->push_snapshot(_cur_logic_snapshot);
343 // Append to the existing data snapshot
344 _cur_logic_snapshot->append_payload(logic);
350 void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
352 lock_guard<mutex> lock(_data_mutex);
356 qDebug() << "Unexpected analog packet";
357 return; // This analog packet was not expected.
360 if (!_cur_analog_snapshot)
362 // Create a new data snapshot
363 _cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
364 new data::AnalogSnapshot(analog));
365 _analog_data->push_snapshot(_cur_analog_snapshot);
369 // Append to the existing data snapshot
370 _cur_analog_snapshot->append_payload(analog);
376 void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
377 const struct sr_datafeed_packet *packet)
382 switch (packet->type) {
388 assert(packet->payload);
390 *(const sr_datafeed_meta*)packet->payload);
394 assert(packet->payload);
395 feed_in_logic(*(const sr_datafeed_logic*)packet->payload);
399 assert(packet->payload);
400 feed_in_analog(*(const sr_datafeed_analog*)packet->payload);
406 lock_guard<mutex> lock(_data_mutex);
407 _cur_logic_snapshot.reset();
408 _cur_analog_snapshot.reset();
416 void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi,
417 const struct sr_datafeed_packet *packet, void *cb_data)
421 _session->data_feed_in(sdi, packet);