pv/data/signalbase.cpp

   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 "logic.hpp"
  24 #include "logicsegment.hpp"
  25 #include "signalbase.hpp"
  26 #include "signaldata.hpp"
  27 #include "decode/row.hpp"
  28
  29 #include <pv/session.hpp>
  30 #include <pv/binding/decoder.hpp>
  31
  32 using std::dynamic_pointer_cast;
  33 using std::make_shared;
  34 using std::shared_ptr;
  35 using std::tie;
  36
  37 namespace pv {
  38 namespace data {
  39
  40 const int SignalBase::ColourBGAlpha = 8*256/100;
  41
  42 SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
  43         channel_(channel),
  44         channel_type_(channel_type),
  45         conversion_type_(NoConversion)
  46 {
  47         if (channel_)
  48                 internal_name_ = QString::fromStdString(channel_->name());
  49 }
  50
  51 SignalBase::~SignalBase()
  52 {
  53         // Wait for the currently ongoing conversion to finish
  54         if (conversion_thread_.joinable())
  55                 conversion_thread_.join();
  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() : (unsigned int)-1;
 104 }
 105
 106 QColor SignalBase::colour() const
 107 {
 108         return colour_;
 109 }
 110
 111 void SignalBase::set_colour(QColor colour)
 112 {
 113         colour_ = colour;
 114
 115         bgcolour_ = colour;
 116         bgcolour_.setAlpha(ColourBGAlpha);
 117
 118         colour_changed(colour);
 119 }
 120
 121 QColor SignalBase::bgcolour() const
 122 {
 123         return bgcolour_;
 124 }
 125
 126 void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
 127 {
 128         if (data_ && channel_type_ == AnalogChannel) {
 129                 shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
 130
 131                 disconnect(analog_data.get(), SIGNAL(samples_cleared()),
 132                         this, SLOT(on_samples_cleared()));
 133                 disconnect(analog_data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
 134                         this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
 135         }
 136
 137         data_ = data;
 138
 139         if (data_ && channel_type_ == AnalogChannel) {
 140                 shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
 141
 142                 connect(analog_data.get(), SIGNAL(samples_cleared()),
 143                         this, SLOT(on_samples_cleared()));
 144                 connect(analog_data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
 145                         this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
 146         }
 147 }
 148
 149 shared_ptr<data::Analog> SignalBase::analog_data() const
 150 {
 151         shared_ptr<Analog> result = nullptr;
 152
 153         if (channel_type_ == AnalogChannel)
 154                 result = dynamic_pointer_cast<Analog>(data_);
 155
 156         return result;
 157 }
 158
 159 shared_ptr<data::Logic> SignalBase::logic_data() const
 160 {
 161         shared_ptr<Logic> result = nullptr;
 162
 163         if (channel_type_ == LogicChannel)
 164                 result = dynamic_pointer_cast<Logic>(data_);
 165
 166         if (((conversion_type_ == A2LConversionByTreshold) ||
 167                 (conversion_type_ == A2LConversionBySchmittTrigger)))
 168                 result = dynamic_pointer_cast<Logic>(converted_data_);
 169
 170         return result;
 171 }
 172
 173 void SignalBase::set_conversion_type(ConversionType t)
 174 {
 175         if (conversion_type_ != NoConversion) {
 176                 // Wait for the currently ongoing conversion to finish
 177                 if (conversion_thread_.joinable())
 178                         conversion_thread_.join();
 179
 180                 // Discard converted data
 181                 converted_data_.reset();
 182         }
 183
 184         conversion_type_ = t;
 185
 186         if ((channel_type_ == AnalogChannel) &&
 187                 ((conversion_type_ == A2LConversionByTreshold) ||
 188                 (conversion_type_ == A2LConversionBySchmittTrigger))) {
 189
 190                 shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
 191
 192                 if (analog_data->analog_segments().size() > 0) {
 193                         AnalogSegment *asegment = analog_data->analog_segments().front().get();
 194
 195                         // Begin conversion of existing sample data
 196                         // TODO Support for multiple segments is missing
 197                         on_samples_added(asegment, 0, 0);
 198                 }
 199         }
 200
 201         conversion_type_changed(t);
 202 }
 203
 204 #ifdef ENABLE_DECODE
 205 bool SignalBase::is_decode_signal() const
 206 {
 207         return (decoder_stack_ != nullptr);
 208 }
 209
 210 shared_ptr<pv::data::DecoderStack> SignalBase::decoder_stack() const
 211 {
 212         return decoder_stack_;
 213 }
 214
 215 void SignalBase::set_decoder_stack(shared_ptr<pv::data::DecoderStack>
 216         decoder_stack)
 217 {
 218         decoder_stack_ = decoder_stack;
 219 }
 220 #endif
 221
 222 void SignalBase::save_settings(QSettings &settings) const
 223 {
 224         settings.setValue("name", name());
 225         settings.setValue("enabled", enabled());
 226         settings.setValue("colour", colour());
 227         settings.setValue("conversion_type", (int)conversion_type_);
 228 }
 229
 230 void SignalBase::restore_settings(QSettings &settings)
 231 {
 232         set_name(settings.value("name").toString());
 233         set_enabled(settings.value("enabled").toBool());
 234         set_colour(settings.value("colour").value<QColor>());
 235         set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
 236 }
 237
 238 uint8_t SignalBase::convert_a2l_threshold(float threshold, float value)
 239 {
 240         return (value >= threshold) ? 1 : 0;
 241 }
 242
 243 uint8_t SignalBase::convert_a2l_schmitt_trigger(float lo_thr, float hi_thr, float value)
 244 {
 245         static uint8_t state = 0;
 246
 247         if (value < lo_thr)
 248                 state = 0;
 249         else if (value > hi_thr)
 250                 state = 1;
 251
 252         return state;
 253 }
 254
 255 void SignalBase::conversion_thread_proc(QObject* segment, uint64_t start_sample,
 256         uint64_t end_sample)
 257 {
 258         const uint64_t block_size = 4096;
 259
 260         // TODO Support for multiple segments is missing
 261
 262         if ((channel_type_ == AnalogChannel) &&
 263                 ((conversion_type_ == A2LConversionByTreshold) ||
 264                 (conversion_type_ == A2LConversionBySchmittTrigger))) {
 265
 266                 AnalogSegment *asegment = qobject_cast<AnalogSegment*>(segment);
 267
 268                 // Create the logic data container if needed
 269                 shared_ptr<Logic> logic_data;
 270                 if (!converted_data_) {
 271                         logic_data = make_shared<Logic>(1);  // Contains only one channel
 272                         converted_data_ = logic_data;
 273                 } else
 274                          logic_data = dynamic_pointer_cast<Logic>(converted_data_);
 275
 276                 // Create the initial logic data segment if needed
 277                 if (logic_data->segments().size() == 0) {
 278                         shared_ptr<LogicSegment> lsegment =
 279                                 make_shared<LogicSegment>(*logic_data.get(), 1, asegment->samplerate());
 280                         logic_data->push_segment(lsegment);
 281                 }
 282
 283                 LogicSegment *lsegment = dynamic_cast<LogicSegment*>(logic_data->segments().front().get());
 284
 285                 // start_sample=end_sample=0 means we need to figure out the unprocessed range
 286                 if ((start_sample == 0) && (end_sample == 0)) {
 287                         start_sample = lsegment->get_sample_count();
 288                         end_sample = asegment->get_sample_count();
 289                 }
 290
 291                 if (start_sample == end_sample)
 292                         return;  // Nothing to do
 293
 294                 float min_v, max_v;
 295                 tie(min_v, max_v) = asegment->get_min_max();
 296
 297                 vector<uint8_t> lsamples;
 298                 lsamples.reserve(block_size);
 299
 300                 uint64_t i = start_sample;
 301
 302                 if (conversion_type_ == A2LConversionByTreshold) {
 303                         const float threshold = (min_v + max_v) * 0.5;  // middle between min and max
 304
 305                         // Convert as many sample blocks as we can
 306                         while ((end_sample - i) > block_size) {
 307                                 const float* asamples = asegment->get_samples(i, i + block_size);
 308                                 for (uint32_t j = 0; j < block_size; j++)
 309                                         lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
 310                                 lsegment->append_payload(lsamples.data(), lsamples.size());
 311                                 i += block_size;
 312                                 lsamples.clear();
 313                                 delete[] asamples;
 314                         }
 315
 316                         // Convert remaining samples
 317                         const float* asamples = asegment->get_samples(i, end_sample);
 318                         for (uint32_t j = 0; j < (end_sample - i); j++)
 319                                 lsamples.push_back(convert_a2l_threshold(threshold, asamples[j]));
 320                         lsegment->append_payload(lsamples.data(), lsamples.size());
 321                         delete[] asamples;
 322                 }
 323
 324                 if (conversion_type_ == A2LConversionBySchmittTrigger) {
 325                         const float amplitude = max_v - min_v;
 326                         const float lo_thr = min_v + (amplitude * 0.1);  // 10% above min
 327                         const float hi_thr = max_v - (amplitude * 0.1);  // 10% below max
 328
 329                         // Convert as many sample blocks as we can
 330                         while ((end_sample - i) > block_size) {
 331                                 const float* asamples = asegment->get_samples(i, i + block_size);
 332                                 for (uint32_t j = 0; j < block_size; j++)
 333                                         lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j]));
 334                                 lsegment->append_payload(lsamples.data(), lsamples.size());
 335                                 i += block_size;
 336                                 lsamples.clear();
 337                                 delete[] asamples;
 338                         }
 339
 340                         // Convert remaining samples
 341                         const float* asamples = asegment->get_samples(i, end_sample);
 342                         for (uint32_t j = 0; j < (end_sample - i); j++)
 343                                 lsamples.push_back(convert_a2l_schmitt_trigger(lo_thr, hi_thr, asamples[j]));
 344                         lsegment->append_payload(lsamples.data(), lsamples.size());
 345                         delete[] asamples;
 346                 }
 347         }
 348 }
 349
 350 void SignalBase::on_samples_cleared()
 351 {
 352         if (converted_data_)
 353                 converted_data_->clear();
 354 }
 355
 356 void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
 357         uint64_t end_sample)
 358 {
 359         (void)segment;
 360         (void)start_sample;
 361         (void)end_sample;
 362
 363         if (conversion_type_ != NoConversion) {
 364
 365                 // Wait for the currently ongoing conversion to finish
 366                 if (conversion_thread_.joinable())
 367                         conversion_thread_.join();
 368
 369                 conversion_thread_ = std::thread(
 370                         &SignalBase::conversion_thread_proc, this,
 371                         segment, start_sample, end_sample);
 372         }
 373 }
 374
 375 void SignalBase::on_capture_state_changed(int state)
 376 {
 377         return;
 378         if (state == Session::Stopped) {
 379                 // Make sure that all data is converted
 380
 381                 if ((channel_type_ == AnalogChannel) &&
 382                         ((conversion_type_ == A2LConversionByTreshold) ||
 383                         (conversion_type_ == A2LConversionBySchmittTrigger))) {
 384
 385                         shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
 386
 387                         if (analog_data->analog_segments().size() > 0) {
 388                                 // TODO Support for multiple segments is missing
 389                                 AnalogSegment *asegment = analog_data->analog_segments().front().get();
 390
 391                                 if (conversion_thread_.joinable())
 392                                         conversion_thread_.join();
 393
 394                                 conversion_thread_ = std::thread(
 395                                         &SignalBase::conversion_thread_proc, this, asegment, 0, 0);
 396                         }
 397                 }
 398         }
 399 }
 400
 401
 402 } // namespace data
 403 } // namespace pv