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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net> | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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/>. | |
19 | */ | |
20 | ||
21 | #include "analog.hpp" | |
22 | #include "analogsegment.hpp" | |
23 | #include "decode/row.hpp" | |
24 | #include "logic.hpp" | |
25 | #include "logicsegment.hpp" | |
26 | #include "signalbase.hpp" | |
27 | #include "signaldata.hpp" | |
28 | ||
29 | #include <pv/binding/decoder.hpp> | |
30 | #include <pv/session.hpp> | |
31 | ||
32 | using std::dynamic_pointer_cast; | |
33 | using std::make_shared; | |
34 | using std::shared_ptr; | |
35 | using std::tie; | |
36 | using std::unique_lock; | |
37 | ||
38 | namespace pv { | |
39 | namespace data { | |
40 | ||
41 | const int SignalBase::ColourBGAlpha = 8 * 256 / 100; | |
42 | const uint64_t SignalBase::ConversionBlockSize = 4096; | |
43 | ||
44 | SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) : | |
45 | channel_(channel), | |
46 | channel_type_(channel_type), | |
47 | conversion_type_(NoConversion) | |
48 | { | |
49 | if (channel_) | |
50 | internal_name_ = QString::fromStdString(channel_->name()); | |
51 | } | |
52 | ||
53 | SignalBase::~SignalBase() | |
54 | { | |
55 | stop_conversion(); | |
56 | } | |
57 | ||
58 | shared_ptr<sigrok::Channel> SignalBase::channel() const | |
59 | { | |
60 | return channel_; | |
61 | } | |
62 | ||
63 | QString SignalBase::name() const | |
64 | { | |
65 | return (channel_) ? QString::fromStdString(channel_->name()) : name_; | |
66 | } | |
67 | ||
68 | QString SignalBase::internal_name() const | |
69 | { | |
70 | return internal_name_; | |
71 | } | |
72 | ||
73 | void SignalBase::set_name(QString name) | |
74 | { | |
75 | if (channel_) | |
76 | channel_->set_name(name.toUtf8().constData()); | |
77 | ||
78 | name_ = name; | |
79 | ||
80 | name_changed(name); | |
81 | } | |
82 | ||
83 | bool SignalBase::enabled() const | |
84 | { | |
85 | return (channel_) ? channel_->enabled() : true; | |
86 | } | |
87 | ||
88 | void SignalBase::set_enabled(bool value) | |
89 | { | |
90 | if (channel_) { | |
91 | channel_->set_enabled(value); | |
92 | enabled_changed(value); | |
93 | } | |
94 | } | |
95 | ||
96 | SignalBase::ChannelType SignalBase::type() const | |
97 | { | |
98 | return channel_type_; | |
99 | } | |
100 | ||
101 | unsigned int SignalBase::index() const | |
102 | { | |
103 | return (channel_) ? channel_->index() : 0; | |
104 | } | |
105 | ||
106 | unsigned int SignalBase::logic_bit_index() const | |
107 | { | |
108 | if (channel_type_ == LogicChannel) | |
109 | return channel_->index(); | |
110 | else | |
111 | return 0; | |
112 | } | |
113 | ||
114 | QColor SignalBase::colour() const | |
115 | { | |
116 | return colour_; | |
117 | } | |
118 | ||
119 | void SignalBase::set_colour(QColor colour) | |
120 | { | |
121 | colour_ = colour; | |
122 | ||
123 | bgcolour_ = colour; | |
124 | bgcolour_.setAlpha(ColourBGAlpha); | |
125 | ||
126 | colour_changed(colour); | |
127 | } | |
128 | ||
129 | QColor SignalBase::bgcolour() const | |
130 | { | |
131 | return bgcolour_; | |
132 | } | |
133 | ||
134 | void SignalBase::set_data(shared_ptr<pv::data::SignalData> data) | |
135 | { | |
136 | if (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))); | |
141 | } | |
142 | ||
143 | data_ = data; | |
144 | ||
145 | if (data_) { | |
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))); | |
150 | } | |
151 | } | |
152 | ||
153 | shared_ptr<data::Analog> SignalBase::analog_data() const | |
154 | { | |
155 | shared_ptr<Analog> result = nullptr; | |
156 | ||
157 | if (channel_type_ == AnalogChannel) | |
158 | result = dynamic_pointer_cast<Analog>(data_); | |
159 | ||
160 | return result; | |
161 | } | |
162 | ||
163 | shared_ptr<data::Logic> SignalBase::logic_data() const | |
164 | { | |
165 | shared_ptr<Logic> result = nullptr; | |
166 | ||
167 | if (channel_type_ == LogicChannel) | |
168 | result = dynamic_pointer_cast<Logic>(data_); | |
169 | ||
170 | if (((conversion_type_ == A2LConversionByTreshold) || | |
171 | (conversion_type_ == A2LConversionBySchmittTrigger))) | |
172 | result = dynamic_pointer_cast<Logic>(converted_data_); | |
173 | ||
174 | return result; | |
175 | } | |
176 | ||
177 | void SignalBase::set_conversion_type(ConversionType t) | |
178 | { | |
179 | if (conversion_type_ != NoConversion) { | |
180 | stop_conversion(); | |
181 | ||
182 | // Discard converted data | |
183 | converted_data_.reset(); | |
184 | samples_cleared(); | |
185 | } | |
186 | ||
187 | conversion_type_ = t; | |
188 | ||
189 | // Re-create an empty container | |
190 | // so that the signal is recognized as providing logic data | |
191 | // and thus can be assigned to a decoder | |
192 | if (conversion_is_a2l()) | |
193 | if (!converted_data_) | |
194 | converted_data_ = make_shared<Logic>(1); // Contains only one channel | |
195 | ||
196 | start_conversion(); | |
197 | ||
198 | conversion_type_changed(t); | |
199 | } | |
200 | ||
201 | #ifdef ENABLE_DECODE | |
202 | bool SignalBase::is_decode_signal() const | |
203 | { | |
204 | return (channel_type_ == DecodeChannel); | |
205 | } | |
206 | #endif | |
207 | ||
208 | void SignalBase::save_settings(QSettings &settings) const | |
209 | { | |
210 | settings.setValue("name", name()); | |
211 | settings.setValue("enabled", enabled()); | |
212 | settings.setValue("colour", colour()); | |
213 | settings.setValue("conversion_type", (int)conversion_type_); | |
214 | } | |
215 | ||
216 | void SignalBase::restore_settings(QSettings &settings) | |
217 | { | |
218 | set_name(settings.value("name").toString()); | |
219 | set_enabled(settings.value("enabled").toBool()); | |
220 | set_colour(settings.value("colour").value<QColor>()); | |
221 | set_conversion_type((ConversionType)settings.value("conversion_type").toInt()); | |
222 | } | |
223 | ||
224 | bool SignalBase::conversion_is_a2l() const | |
225 | { | |
226 | return ((channel_type_ == AnalogChannel) && | |
227 | ((conversion_type_ == A2LConversionByTreshold) || | |
228 | (conversion_type_ == A2LConversionBySchmittTrigger))); | |
229 | } | |
230 | ||
231 | void SignalBase::conversion_thread_proc(QObject* segment) | |
232 | { | |
233 | // TODO Support for multiple segments is missing | |
234 | ||
235 | uint64_t start_sample, end_sample; | |
236 | start_sample = end_sample = 0; | |
237 | ||
238 | do { | |
239 | if (conversion_is_a2l()) { | |
240 | ||
241 | AnalogSegment *asegment = qobject_cast<AnalogSegment*>(segment); | |
242 | ||
243 | const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_); | |
244 | ||
245 | // Create the initial logic data segment if needed | |
246 | if (logic_data->segments().size() == 0) { | |
247 | shared_ptr<LogicSegment> lsegment = | |
248 | make_shared<LogicSegment>(*logic_data.get(), 1, asegment->samplerate()); | |
249 | logic_data->push_segment(lsegment); | |
250 | } | |
251 | ||
252 | LogicSegment *lsegment = dynamic_cast<LogicSegment*>(logic_data->segments().front().get()); | |
253 | ||
254 | start_sample = lsegment->get_sample_count(); | |
255 | end_sample = asegment->get_sample_count(); | |
256 | ||
257 | if (end_sample > start_sample) { | |
258 | float min_v, max_v; | |
259 | tie(min_v, max_v) = asegment->get_min_max(); | |
260 | ||
261 | // Create sigrok::Analog instance | |
262 | float *asamples = new float[ConversionBlockSize]; | |
263 | uint8_t *lsamples = new uint8_t[ConversionBlockSize]; | |
264 | ||
265 | vector<shared_ptr<sigrok::Channel> > channels; | |
266 | channels.push_back(channel_); | |
267 | ||
268 | vector<const sigrok::QuantityFlag*> mq_flags; | |
269 | const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE; | |
270 | const sigrok::Unit * const unit = sigrok::Unit::VOLT; | |
271 | ||
272 | shared_ptr<sigrok::Packet> packet = | |
273 | Session::sr_context->create_analog_packet(channels, | |
274 | asamples, ConversionBlockSize, mq, unit, mq_flags); | |
275 | ||
276 | shared_ptr<sigrok::Analog> analog = | |
277 | dynamic_pointer_cast<sigrok::Analog>(packet->payload()); | |
278 | ||
279 | // Convert | |
280 | uint64_t i = start_sample; | |
281 | ||
282 | if (conversion_type_ == A2LConversionByTreshold) { | |
283 | const float threshold = (min_v + max_v) * 0.5; // middle between min and max | |
284 | ||
285 | // Convert as many sample blocks as we can | |
286 | while ((end_sample - i) > ConversionBlockSize) { | |
287 | asegment->get_samples(i, i + ConversionBlockSize, asamples); | |
288 | ||
289 | shared_ptr<sigrok::Logic> logic = | |
290 | analog->get_logic_via_threshold(threshold, lsamples); | |
291 | ||
292 | lsegment->append_payload(logic->data_pointer(), logic->data_length()); | |
293 | ||
294 | samples_added(lsegment, i, i + ConversionBlockSize); | |
295 | i += ConversionBlockSize; | |
296 | } | |
297 | ||
298 | // Re-create sigrok::Analog and convert remaining samples | |
299 | packet = Session::sr_context->create_analog_packet(channels, | |
300 | asamples, end_sample - i, mq, unit, mq_flags); | |
301 | ||
302 | analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload()); | |
303 | ||
304 | asegment->get_samples(i, end_sample, asamples); | |
305 | shared_ptr<sigrok::Logic> logic = | |
306 | analog->get_logic_via_threshold(threshold, lsamples); | |
307 | lsegment->append_payload(logic->data_pointer(), logic->data_length()); | |
308 | samples_added(lsegment, i, end_sample); | |
309 | } | |
310 | ||
311 | if (conversion_type_ == A2LConversionBySchmittTrigger) { | |
312 | const float amplitude = max_v - min_v; | |
313 | const float center = min_v + (amplitude / 2); | |
314 | const float lo_thr = center - (amplitude * 0.15); // 15% margin | |
315 | const float hi_thr = center + (amplitude * 0.15); // 15% margin | |
316 | uint8_t state = 0; // TODO Use value of logic sample n-1 instead of 0 | |
317 | ||
318 | // Convert as many sample blocks as we can | |
319 | while ((end_sample - i) > ConversionBlockSize) { | |
320 | asegment->get_samples(i, i + ConversionBlockSize, asamples); | |
321 | ||
322 | shared_ptr<sigrok::Logic> logic = | |
323 | analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr, | |
324 | &state, lsamples); | |
325 | ||
326 | lsegment->append_payload(logic->data_pointer(), logic->data_length()); | |
327 | ||
328 | samples_added(lsegment, i, i + ConversionBlockSize); | |
329 | i += ConversionBlockSize; | |
330 | } | |
331 | ||
332 | // Re-create sigrok::Analog and convert remaining samples | |
333 | packet = Session::sr_context->create_analog_packet(channels, | |
334 | asamples, end_sample - i, mq, unit, mq_flags); | |
335 | ||
336 | analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload()); | |
337 | ||
338 | asegment->get_samples(i, end_sample, asamples); | |
339 | shared_ptr<sigrok::Logic> logic = | |
340 | analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr, | |
341 | &state, lsamples); | |
342 | lsegment->append_payload(logic->data_pointer(), logic->data_length()); | |
343 | samples_added(lsegment, i, end_sample); | |
344 | } | |
345 | ||
346 | // If acquisition is ongoing, start-/endsample may have changed | |
347 | end_sample = asegment->get_sample_count(); | |
348 | ||
349 | delete[] lsamples; | |
350 | delete[] asamples; | |
351 | } | |
352 | } | |
353 | ||
354 | if (!conversion_interrupt_ && (start_sample == end_sample)) { | |
355 | unique_lock<mutex> input_lock(conversion_input_mutex_); | |
356 | conversion_input_cond_.wait(input_lock); | |
357 | } | |
358 | } while (!conversion_interrupt_); | |
359 | } | |
360 | ||
361 | void SignalBase::start_conversion() | |
362 | { | |
363 | stop_conversion(); | |
364 | ||
365 | if (conversion_is_a2l()) { | |
366 | shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_); | |
367 | ||
368 | if (analog_data->analog_segments().size() > 0) { | |
369 | // TODO Support for multiple segments is missing | |
370 | AnalogSegment *asegment = analog_data->analog_segments().front().get(); | |
371 | ||
372 | conversion_interrupt_ = false; | |
373 | conversion_thread_ = std::thread( | |
374 | &SignalBase::conversion_thread_proc, this, asegment); | |
375 | } | |
376 | } | |
377 | } | |
378 | ||
379 | void SignalBase::stop_conversion() | |
380 | { | |
381 | // Stop conversion so we can restart it from the beginning | |
382 | conversion_interrupt_ = true; | |
383 | conversion_input_cond_.notify_one(); | |
384 | if (conversion_thread_.joinable()) | |
385 | conversion_thread_.join(); | |
386 | } | |
387 | ||
388 | void SignalBase::on_samples_cleared() | |
389 | { | |
390 | if (converted_data_) | |
391 | converted_data_->clear(); | |
392 | ||
393 | samples_cleared(); | |
394 | } | |
395 | ||
396 | void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample, | |
397 | uint64_t end_sample) | |
398 | { | |
399 | if (conversion_type_ != NoConversion) { | |
400 | if (conversion_thread_.joinable()) { | |
401 | // Notify the conversion thread since it's running | |
402 | conversion_input_cond_.notify_one(); | |
403 | } else { | |
404 | // Start the conversion thread | |
405 | start_conversion(); | |
406 | } | |
407 | } | |
408 | ||
409 | samples_added(segment, start_sample, end_sample); | |
410 | } | |
411 | ||
412 | void SignalBase::on_capture_state_changed(int state) | |
413 | { | |
414 | if (state == Session::Running) { | |
415 | if (conversion_type_ != NoConversion) { | |
416 | // Restart conversion | |
417 | stop_conversion(); | |
418 | start_conversion(); | |
419 | } | |
420 | } | |
421 | } | |
422 | ||
423 | } // namespace data | |
424 | } // namespace pv |