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() :
43 _capture_state(Stopped)
45 // TODO: This should not be necessary
49 SigSession::~SigSession()
53 if (_sampling_thread.get())
54 _sampling_thread->join();
55 _sampling_thread.reset();
57 // TODO: This should not be necessary
61 void SigSession::load_file(const string &name,
62 function<void (const QString)> error_handler)
65 _sampling_thread.reset(new boost::thread(
66 &SigSession::load_thread_proc, this, name,
70 SigSession::capture_state SigSession::get_capture_state() const
72 lock_guard<mutex> lock(_sampling_mutex);
73 return _capture_state;
76 void SigSession::start_capture(struct sr_dev_inst *sdi,
77 uint64_t record_length,
78 function<void (const QString)> error_handler)
82 // Check that at least one probe is enabled
84 for (l = sdi->probes; l; l = l->next) {
85 sr_probe *const probe = (sr_probe*)l->data;
92 error_handler(tr("No probes enabled."));
97 _sampling_thread.reset(new boost::thread(
98 &SigSession::sample_thread_proc, this, sdi,
99 record_length, error_handler));
102 void SigSession::stop_capture()
104 if (get_capture_state() == Stopped)
109 // Check that sampling stopped
110 if (_sampling_thread.get())
111 _sampling_thread->join();
112 _sampling_thread.reset();
115 vector< shared_ptr<view::Signal> > SigSession::get_signals()
117 lock_guard<mutex> lock(_signals_mutex);
121 boost::shared_ptr<data::Logic> SigSession::get_data()
126 void SigSession::set_capture_state(capture_state state)
128 lock_guard<mutex> lock(_sampling_mutex);
129 _capture_state = state;
130 capture_state_changed(state);
133 void SigSession::load_thread_proc(const string name,
134 function<void (const QString)> error_handler)
136 if (sr_session_load(name.c_str()) != SR_OK) {
137 error_handler(tr("Failed to load file."));
141 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
143 if (sr_session_start() != SR_OK) {
144 error_handler(tr("Failed to start session."));
148 set_capture_state(Running);
151 sr_session_destroy();
153 set_capture_state(Stopped);
156 void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
157 uint64_t record_length,
158 function<void (const QString)> error_handler)
161 assert(error_handler);
164 sr_session_datafeed_callback_add(data_feed_in_proc, NULL);
166 if (sr_session_dev_add(sdi) != SR_OK) {
167 error_handler(tr("Failed to use device."));
168 sr_session_destroy();
172 // Set the sample limit
173 if (sr_config_set(sdi, SR_CONF_LIMIT_SAMPLES,
174 g_variant_new_uint64(record_length)) != SR_OK) {
175 error_handler(tr("Failed to configure "
176 "time-based sample limit."));
177 sr_session_destroy();
181 if (sr_session_start() != SR_OK) {
182 error_handler(tr("Failed to start session."));
186 set_capture_state(Running);
189 sr_session_destroy();
191 set_capture_state(Stopped);
194 void SigSession::feed_in_header(const sr_dev_inst *sdi)
196 shared_ptr<view::Signal> signal;
198 uint64_t sample_rate = 0;
199 unsigned int logic_probe_count = 0;
200 unsigned int analog_probe_count = 0;
202 // Detect what data types we will receive
203 for (const GSList *l = sdi->probes; l; l = l->next) {
204 const sr_probe *const probe = (const sr_probe *)l->data;
208 switch(probe->type) {
213 case SR_PROBE_ANALOG:
214 analog_probe_count++;
219 // Read out the sample rate
222 const int ret = sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
224 assert(ret == SR_OK);
225 sample_rate = g_variant_get_uint64(gvar);
226 g_variant_unref(gvar);
228 // Create data containers for the coming data snapshots
230 lock_guard<mutex> data_lock(_data_mutex);
232 if (logic_probe_count != 0) {
233 _logic_data.reset(new data::Logic(
234 logic_probe_count, sample_rate));
238 if (analog_probe_count != 0) {
239 _analog_data.reset(new data::Analog(sample_rate));
240 assert(_analog_data);
244 // Make the logic probe list
246 lock_guard<mutex> lock(_signals_mutex);
250 for (const GSList *l = sdi->probes; l; l = l->next) {
251 const sr_probe *const probe =
252 (const sr_probe *)l->data;
257 switch(probe->type) {
259 signal = shared_ptr<view::Signal>(
260 new view::LogicSignal(probe->name,
261 _logic_data, probe->index));
264 case SR_PROBE_ANALOG:
265 signal = shared_ptr<view::Signal>(
266 new view::AnalogSignal(probe->name,
267 _analog_data, probe->index));
271 _signals.push_back(signal);
278 void SigSession::feed_in_meta(const sr_dev_inst *sdi,
279 const sr_datafeed_meta &meta)
283 for (const GSList *l = meta.config; l; l = l->next) {
284 const sr_config *const src = (const sr_config*)l->data;
286 case SR_CONF_SAMPLERATE:
287 /// @todo handle samplerate changes
288 /// samplerate = (uint64_t *)src->value;
291 // Unknown metadata is not an error.
297 void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
299 lock_guard<mutex> lock(_data_mutex);
303 qDebug() << "Unexpected logic packet";
307 if (!_cur_logic_snapshot)
309 // Create a new data snapshot
310 _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
311 new data::LogicSnapshot(logic));
312 _logic_data->push_snapshot(_cur_logic_snapshot);
316 // Append to the existing data snapshot
317 _cur_logic_snapshot->append_payload(logic);
323 void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
325 lock_guard<mutex> lock(_data_mutex);
329 qDebug() << "Unexpected analog packet";
330 return; // This analog packet was not expected.
333 if (!_cur_analog_snapshot)
335 // Create a new data snapshot
336 _cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
337 new data::AnalogSnapshot(analog));
338 _analog_data->push_snapshot(_cur_analog_snapshot);
342 // Append to the existing data snapshot
343 _cur_analog_snapshot->append_payload(analog);
349 void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
350 const struct sr_datafeed_packet *packet)
355 switch (packet->type) {
361 assert(packet->payload);
363 *(const sr_datafeed_meta*)packet->payload);
367 assert(packet->payload);
368 feed_in_logic(*(const sr_datafeed_logic*)packet->payload);
372 assert(packet->payload);
373 feed_in_analog(*(const sr_datafeed_analog*)packet->payload);
379 lock_guard<mutex> lock(_data_mutex);
380 _cur_logic_snapshot.reset();
381 _cur_analog_snapshot.reset();
389 void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi,
390 const struct sr_datafeed_packet *packet, void *cb_data)
394 _session->data_feed_in(sdi, packet);