2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
5 * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "analogsegment.hpp"
23 #include "decode/row.hpp"
25 #include "logicsegment.hpp"
26 #include "signalbase.hpp"
27 #include "signaldata.hpp"
29 #include <pv/binding/decoder.hpp>
30 #include <pv/session.hpp>
32 using std::dynamic_pointer_cast;
33 using std::make_shared;
34 using std::shared_ptr;
36 using std::unique_lock;
41 const int SignalBase::ColourBGAlpha = 8 * 256 / 100;
42 const uint64_t SignalBase::ConversionBlockSize = 4096;
44 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
46 channel_type_(channel_type),
47 conversion_type_(NoConversion)
50 internal_name_ = QString::fromStdString(channel_->name());
53 SignalBase::~SignalBase()
58 shared_ptr<sigrok::Channel> SignalBase::channel() const
63 QString SignalBase::name() const
65 return (channel_) ? QString::fromStdString(channel_->name()) : name_;
68 QString SignalBase::internal_name() const
70 return internal_name_;
73 void SignalBase::set_name(QString name)
76 channel_->set_name(name.toUtf8().constData());
83 bool SignalBase::enabled() const
85 return (channel_) ? channel_->enabled() : true;
88 void SignalBase::set_enabled(bool value)
91 channel_->set_enabled(value);
92 enabled_changed(value);
96 SignalBase::ChannelType SignalBase::type() const
101 unsigned int SignalBase::index() const
103 return (channel_) ? channel_->index() : 0;
106 unsigned int SignalBase::logic_bit_index() const
108 if (channel_type_ == LogicChannel)
109 return channel_->index();
114 QColor SignalBase::colour() const
119 void SignalBase::set_colour(QColor colour)
124 bgcolour_.setAlpha(ColourBGAlpha);
126 colour_changed(colour);
129 QColor SignalBase::bgcolour() const
134 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
137 disconnect(data.get(), SIGNAL(samples_cleared()),
138 this, SLOT(on_samples_cleared()));
139 disconnect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
140 this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
146 connect(data.get(), SIGNAL(samples_cleared()),
147 this, SLOT(on_samples_cleared()));
148 connect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
149 this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
153 shared_ptr<data::Analog> SignalBase::analog_data() const
155 shared_ptr<Analog> result = nullptr;
157 if (channel_type_ == AnalogChannel)
158 result = dynamic_pointer_cast<Analog>(data_);
163 shared_ptr<data::Logic> SignalBase::logic_data() const
165 shared_ptr<Logic> result = nullptr;
167 if (channel_type_ == LogicChannel)
168 result = dynamic_pointer_cast<Logic>(data_);
170 if (((conversion_type_ == A2LConversionByTreshold) ||
171 (conversion_type_ == A2LConversionBySchmittTrigger)))
172 result = dynamic_pointer_cast<Logic>(converted_data_);
177 void SignalBase::set_conversion_type(ConversionType t)
179 if (conversion_type_ != NoConversion) {
182 // Discard converted data
183 converted_data_.reset();
186 conversion_type_ = t;
190 conversion_type_changed(t);
194 bool SignalBase::is_decode_signal() const
196 return (channel_type_ == DecodeChannel);
200 void SignalBase::save_settings(QSettings &settings) const
202 settings.setValue("name", name());
203 settings.setValue("enabled", enabled());
204 settings.setValue("colour", colour());
205 settings.setValue("conversion_type", (int)conversion_type_);
208 void SignalBase::restore_settings(QSettings &settings)
210 set_name(settings.value("name").toString());
211 set_enabled(settings.value("enabled").toBool());
212 set_colour(settings.value("colour").value<QColor>());
213 set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
216 uint8_t SignalBase::convert_a2l_threshold(float threshold, float value)
218 return (value >= threshold) ? 1 : 0;
221 uint8_t SignalBase::convert_a2l_schmitt_trigger(float lo_thr, float hi_thr,
222 float value, uint8_t &state)
226 else if (value > hi_thr)
232 void SignalBase::conversion_thread_proc(QObject* segment)
234 // TODO Support for multiple segments is missing
236 uint64_t start_sample, end_sample;
237 start_sample = end_sample = 0;
240 if ((channel_type_ == AnalogChannel) &&
241 ((conversion_type_ == A2LConversionByTreshold) ||
242 (conversion_type_ == A2LConversionBySchmittTrigger))) {
244 AnalogSegment *asegment = qobject_cast<AnalogSegment*>(segment);
246 // Create the logic data container if needed
247 shared_ptr<Logic> logic_data;
248 if (!converted_data_) {
249 logic_data = make_shared<Logic>(1); // Contains only one channel
250 converted_data_ = logic_data;
252 logic_data = dynamic_pointer_cast<Logic>(converted_data_);
254 // Create the initial logic data segment if needed
255 if (logic_data->segments().size() == 0) {
256 shared_ptr<LogicSegment> lsegment =
257 make_shared<LogicSegment>(*logic_data.get(), 1, asegment->samplerate());
258 logic_data->push_segment(lsegment);
261 LogicSegment *lsegment = dynamic_cast<LogicSegment*>(logic_data->segments().front().get());
263 start_sample = lsegment->get_sample_count();
264 end_sample = asegment->get_sample_count();
266 if (end_sample > start_sample) {
268 tie(min_v, max_v) = asegment->get_min_max();
270 vector<uint8_t> lsamples;
271 lsamples.reserve(ConversionBlockSize);
273 uint64_t i = start_sample;
275 if (conversion_type_ == A2LConversionByTreshold) {
276 const float threshold = (min_v + max_v) * 0.5; // middle between min and max
278 // Convert as many sample blocks as we can
279 while ((end_sample - i) > ConversionBlockSize) {
280 const float* asamples = asegment->get_samples(i, i + ConversionBlockSize);
281 for (uint32_t j = 0; j < ConversionBlockSize; j++)
282 lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
283 lsegment->append_payload(lsamples.data(), lsamples.size());
284 samples_added(lsegment, i, i + ConversionBlockSize);
285 i += ConversionBlockSize;
290 // Convert remaining samples
291 const float* asamples = asegment->get_samples(i, end_sample);
292 for (uint32_t j = 0; j < (end_sample - i); j++)
293 lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
294 lsegment->append_payload(lsamples.data(), lsamples.size());
295 samples_added(lsegment, i, end_sample);
299 if (conversion_type_ == A2LConversionBySchmittTrigger) {
300 const float amplitude = max_v - min_v;
301 const float lo_thr = min_v + (amplitude * 0.1); // 10% above min
302 const float hi_thr = max_v - (amplitude * 0.1); // 10% below max
303 uint8_t state = 0; // TODO Use value of logic sample n-1 instead of 0
305 // Convert as many sample blocks as we can
306 while ((end_sample - i) > ConversionBlockSize) {
307 const float* asamples = asegment->get_samples(i, i + ConversionBlockSize);
308 for (uint32_t j = 0; j < ConversionBlockSize; j++)
309 lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j], state));
310 lsegment->append_payload(lsamples.data(), lsamples.size());
311 samples_added(lsegment, i, i + ConversionBlockSize);
312 i += ConversionBlockSize;
317 // Convert remaining samples
318 const float* asamples = asegment->get_samples(i, end_sample);
319 for (uint32_t j = 0; j < (end_sample - i); j++)
320 lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j], state));
321 lsegment->append_payload(lsamples.data(), lsamples.size());
322 samples_added(lsegment, i, end_sample);
326 // If acquisition is ongoing, start-/endsample may have changed
327 end_sample = asegment->get_sample_count();
331 if (!conversion_interrupt_ && (start_sample == end_sample)) {
332 unique_lock<mutex> input_lock(conversion_input_mutex_);
333 conversion_input_cond_.wait(input_lock);
335 } while (!conversion_interrupt_);
338 void SignalBase::start_conversion()
342 if ((channel_type_ == AnalogChannel) &&
343 ((conversion_type_ == A2LConversionByTreshold) ||
344 (conversion_type_ == A2LConversionBySchmittTrigger))) {
346 shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
348 if (analog_data->analog_segments().size() > 0) {
349 // TODO Support for multiple segments is missing
350 AnalogSegment *asegment = analog_data->analog_segments().front().get();
352 conversion_interrupt_ = false;
353 conversion_thread_ = std::thread(
354 &SignalBase::conversion_thread_proc, this, asegment);
359 void SignalBase::stop_conversion()
361 // Stop conversion so we can restart it from the beginning
362 conversion_interrupt_ = true;
363 conversion_input_cond_.notify_one();
364 if (conversion_thread_.joinable())
365 conversion_thread_.join();
368 void SignalBase::on_samples_cleared()
371 converted_data_->clear();
376 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
379 if (conversion_type_ != NoConversion) {
380 if (conversion_thread_.joinable()) {
381 // Notify the conversion thread since it's running
382 conversion_input_cond_.notify_one();
384 // Start the conversion thread
389 samples_added(segment, start_sample, end_sample);
392 void SignalBase::on_capture_state_changed(int state)
394 if (state == Session::Running) {
395 if (conversion_type_ != NoConversion) {
396 // Restart conversion