pv/views/decoder_binary/view.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2019 Soeren Apel <soeren@apelpie.net>
   5  *
   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.
  10  *
  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.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <climits>
  21
  22 #include <QByteArray>
  23 #include <QDebug>
  24 #include <QFileDialog>
  25 #include <QLabel>
  26 #include <QMenu>
  27 #include <QMessageBox>
  28 #include <QToolBar>
  29 #include <QVBoxLayout>
  30
  31 #include <libsigrokdecode/libsigrokdecode.h>
  32
  33 #include "view.hpp"
  34 #include "QHexView.hpp"
  35
  36 #include "pv/globalsettings.hpp"
  37 #include "pv/session.hpp"
  38 #include "pv/util.hpp"
  39 #include "pv/data/decode/decoder.hpp"
  40
  41 using pv::data::DecodeSignal;
  42 using pv::data::SignalBase;
  43 using pv::data::decode::Decoder;
  44 using pv::util::Timestamp;
  45
  46 using std::shared_ptr;
  47
  48 namespace pv {
  49 namespace views {
  50 namespace decoder_binary {
  51
  52 const char* SaveTypeNames[SaveTypeCount] = {
  53         "Binary",
  54         "Hex Dump, plain",
  55         "Hex Dump, with offset",
  56         "Hex Dump, canonical"
  57 };
  58
  59
  60 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
  61         ViewBase(session, is_main_view, parent),
  62
  63         // Note: Place defaults in View::reset_view_state(), not here
  64         parent_(parent),
  65         decoder_selector_(new QComboBox()),
  66         format_selector_(new QComboBox()),
  67         class_selector_(new QComboBox()),
  68         stacked_widget_(new QStackedWidget()),
  69         hex_view_(new QHexView()),
  70         save_button_(new QToolButton()),
  71         save_action_(new QAction(this)),
  72         signal_(nullptr)
  73 {
  74         QVBoxLayout *root_layout = new QVBoxLayout(this);
  75         root_layout->setContentsMargins(0, 0, 0, 0);
  76
  77         // Create toolbar
  78         QToolBar* toolbar = new QToolBar();
  79         toolbar->setContextMenuPolicy(Qt::PreventContextMenu);
  80         parent->addToolBar(toolbar);
  81
  82         // Populate toolbar
  83         toolbar->addWidget(new QLabel(tr("Decoder:")));
  84         toolbar->addWidget(decoder_selector_);
  85         toolbar->addWidget(class_selector_);
  86         toolbar->addSeparator();
  87         toolbar->addWidget(new QLabel(tr("Show data as")));
  88         toolbar->addWidget(format_selector_);
  89         toolbar->addSeparator();
  90         toolbar->addWidget(save_button_);
  91
  92         // Add format types
  93         format_selector_->addItem(tr("Hexdump"), QVariant(QString("text/hexdump")));
  94
  95         // Add widget stack
  96         root_layout->addWidget(stacked_widget_);
  97         stacked_widget_->addWidget(hex_view_);
  98         stacked_widget_->setCurrentIndex(0);
  99
 100         connect(decoder_selector_, SIGNAL(currentIndexChanged(int)),
 101                 this, SLOT(on_selected_decoder_changed(int)));
 102         connect(class_selector_, SIGNAL(currentIndexChanged(int)),
 103                 this, SLOT(on_selected_class_changed(int)));
 104
 105         // Configure widgets
 106         decoder_selector_->setSizeAdjustPolicy(QComboBox::AdjustToContents);
 107         class_selector_->setSizeAdjustPolicy(QComboBox::AdjustToContents);
 108
 109         // Configure actions
 110         save_action_->setText(tr("&Save..."));
 111         save_action_->setIcon(QIcon::fromTheme("document-save-as",
 112                 QIcon(":/icons/document-save-as.png")));
 113         save_action_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
 114         connect(save_action_, SIGNAL(triggered(bool)),
 115                 this, SLOT(on_actionSave_triggered()));
 116
 117         QMenu *save_menu = new QMenu();
 118         connect(save_menu, SIGNAL(triggered(QAction*)),
 119                 this, SLOT(on_actionSave_triggered(QAction*)));
 120
 121         for (int i = 0; i < SaveTypeCount; i++) {
 122                 QAction *const action = save_menu->addAction(tr(SaveTypeNames[i]));
 123                 action->setData(QVariant::fromValue(i));
 124         }
 125
 126         save_button_->setMenu(save_menu);
 127         save_button_->setDefaultAction(save_action_);
 128         save_button_->setPopupMode(QToolButton::MenuButtonPopup);
 129
 130         parent->setSizePolicy(hex_view_->sizePolicy()); // TODO Must be updated when selected widget changes
 131
 132         // Set up metadata event handler
 133         session_.metadata_obj_manager()->add_observer(this);
 134
 135         reset_view_state();
 136 }
 137
 138 View::~View()
 139 {
 140         session_.metadata_obj_manager()->remove_observer(this);
 141 }
 142
 143 ViewType View::get_type() const
 144 {
 145         return ViewTypeDecoderBinary;
 146 }
 147
 148 void View::reset_view_state()
 149 {
 150         ViewBase::reset_view_state();
 151
 152         decoder_selector_->clear();
 153         class_selector_->clear();
 154         format_selector_->setCurrentIndex(0);
 155         save_button_->setEnabled(false);
 156
 157         hex_view_->clear();
 158 }
 159
 160 void View::clear_decode_signals()
 161 {
 162         ViewBase::clear_decode_signals();
 163
 164         reset_data();
 165         reset_view_state();
 166 }
 167
 168 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
 169 {
 170         ViewBase::add_decode_signal(signal);
 171
 172         connect(signal.get(), SIGNAL(name_changed(const QString&)),
 173                 this, SLOT(on_signal_name_changed(const QString&)));
 174         connect(signal.get(), SIGNAL(decoder_stacked(void*)),
 175                 this, SLOT(on_decoder_stacked(void*)));
 176         connect(signal.get(), SIGNAL(decoder_removed(void*)),
 177                 this, SLOT(on_decoder_removed(void*)));
 178
 179         // Add all decoders provided by this signal
 180         auto stack = signal->decoder_stack();
 181         if (stack.size() > 1) {
 182                 for (const shared_ptr<Decoder>& dec : stack)
 183                         // Only add the decoder if it has binary output
 184                         if (dec->get_binary_class_count() > 0) {
 185                                 QString title = QString("%1 (%2)").arg(signal->name(), dec->name());
 186                                 decoder_selector_->addItem(title, QVariant::fromValue((void*)dec.get()));
 187                         }
 188         } else
 189                 if (!stack.empty()) {
 190                         shared_ptr<Decoder>& dec = stack.at(0);
 191                         if (dec->get_binary_class_count() > 0)
 192                                 decoder_selector_->addItem(signal->name(), QVariant::fromValue((void*)dec.get()));
 193                 }
 194 }
 195
 196 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 197 {
 198         // Remove all decoders provided by this signal
 199         for (const shared_ptr<Decoder>& dec : signal->decoder_stack()) {
 200                 int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 201
 202                 if (index != -1)
 203                         decoder_selector_->removeItem(index);
 204         }
 205
 206         ViewBase::remove_decode_signal(signal);
 207
 208         if (signal.get() == signal_) {
 209                 reset_data();
 210                 update_data();
 211                 reset_view_state();
 212         }
 213 }
 214
 215 void View::save_settings(QSettings &settings) const
 216 {
 217         ViewBase::save_settings(settings);
 218 }
 219
 220 void View::restore_settings(QSettings &settings)
 221 {
 222         // Note: It is assumed that this function is only called once,
 223         // immediately after restoring a previous session.
 224         ViewBase::restore_settings(settings);
 225 }
 226
 227 void View::reset_data()
 228 {
 229         signal_ = nullptr;
 230         decoder_ = nullptr;
 231         bin_class_id_ = 0;
 232         binary_data_exists_ = false;
 233
 234         hex_view_->clear();
 235 }
 236
 237 void View::update_data()
 238 {
 239         if (!signal_)
 240                 return;
 241
 242         const DecodeBinaryClass* bin_class =
 243                 signal_->get_binary_data_class(current_segment_, decoder_, bin_class_id_);
 244
 245         hex_view_->set_data(bin_class);
 246
 247         if (!binary_data_exists_)
 248                 return;
 249
 250         if (!save_button_->isEnabled())
 251                 save_button_->setEnabled(true);
 252 }
 253
 254 void View::save_data() const
 255 {
 256         assert(decoder_);
 257         assert(signal_);
 258
 259         if (!signal_)
 260                 return;
 261
 262         GlobalSettings settings;
 263         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
 264
 265         const QString file_name = QFileDialog::getSaveFileName(
 266                 parent_, tr("Save Binary Data"), dir, tr("Binary Data Files (*.bin);;All Files (*)"));
 267
 268         if (file_name.isEmpty())
 269                 return;
 270
 271         QFile file(file_name);
 272         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
 273                 pair<size_t, size_t> selection = hex_view_->get_selection();
 274
 275                 vector<uint8_t> data;
 276                 data.resize(selection.second - selection.first + 1);
 277
 278                 signal_->get_merged_binary_data_chunks_by_offset(current_segment_, decoder_,
 279                         bin_class_id_, selection.first, selection.second, &data);
 280
 281                 int64_t bytes_written = file.write((const char*)data.data(), data.size());
 282
 283                 if ((bytes_written == -1) || ((uint64_t)bytes_written != data.size())) {
 284                         QMessageBox msg(parent_);
 285                         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
 286                         msg.setStandardButtons(QMessageBox::Ok);
 287                         msg.setIcon(QMessageBox::Warning);
 288                         msg.exec();
 289                         return;
 290                 }
 291         }
 292 }
 293
 294 void View::save_data_as_hex_dump(bool with_offset, bool with_ascii) const
 295 {
 296         assert(decoder_);
 297         assert(signal_);
 298
 299         if (!signal_)
 300                 return;
 301
 302         GlobalSettings settings;
 303         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
 304
 305         const QString file_name = QFileDialog::getSaveFileName(
 306                 parent_, tr("Save Binary Data"), dir, tr("Hex Dumps (*.txt);;All Files (*)"));
 307
 308         if (file_name.isEmpty())
 309                 return;
 310
 311         QFile file(file_name);
 312         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
 313                 pair<size_t, size_t> selection = hex_view_->get_selection();
 314
 315                 vector<uint8_t> data;
 316                 data.resize(selection.second - selection.first + 1);
 317
 318                 signal_->get_merged_binary_data_chunks_by_offset(current_segment_, decoder_,
 319                         bin_class_id_, selection.first, selection.second, &data);
 320
 321                 QTextStream out_stream(&file);
 322
 323                 uint64_t offset = selection.first;
 324                 uint64_t n = hex_view_->get_bytes_per_line();
 325                 QString s;
 326
 327                 while (offset < selection.second) {
 328                         size_t end = std::min((uint64_t)(selection.second), offset + n);
 329                         offset = hex_view_->create_hex_line(offset, end, &s, with_offset, with_ascii);
 330                         out_stream << s << endl;
 331                 }
 332
 333                 out_stream << endl;
 334
 335                 if (out_stream.status() != QTextStream::Ok) {
 336                         QMessageBox msg(parent_);
 337                         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
 338                         msg.setStandardButtons(QMessageBox::Ok);
 339                         msg.setIcon(QMessageBox::Warning);
 340                         msg.exec();
 341                         return;
 342                 }
 343         }
 344 }
 345
 346 void View::on_selected_decoder_changed(int index)
 347 {
 348         if (signal_)
 349                 disconnect(signal_, SIGNAL(new_binary_data(unsigned int, void*, unsigned int)));
 350
 351         reset_data();
 352
 353         decoder_ = (Decoder*)decoder_selector_->itemData(index).value<void*>();
 354
 355         // Find the signal that contains the selected decoder
 356         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 357                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 358                         if (decoder_ == dec.get())
 359                                 signal_ = ds.get();
 360
 361         class_selector_->clear();
 362
 363         if (signal_) {
 364                 // Populate binary class selector
 365                 uint32_t bin_classes = decoder_->get_binary_class_count();
 366                 for (uint32_t i = 0; i < bin_classes; i++) {
 367                         const data::decode::DecodeBinaryClassInfo* class_info = decoder_->get_binary_class(i);
 368                         class_selector_->addItem(class_info->description, QVariant::fromValue(i));
 369                 }
 370
 371                 connect(signal_, SIGNAL(new_binary_data(unsigned int, void*, unsigned int)),
 372                         this, SLOT(on_new_binary_data(unsigned int, void*, unsigned int)));
 373         }
 374
 375         update_data();
 376 }
 377
 378 void View::on_selected_class_changed(int index)
 379 {
 380         bin_class_id_ = class_selector_->itemData(index).value<uint32_t>();
 381
 382         binary_data_exists_ = (signal_) ?
 383                 signal_->get_binary_data_chunk_count(current_segment_, decoder_, bin_class_id_) :
 384                 false;
 385
 386         update_data();
 387 }
 388
 389 void View::on_signal_name_changed(const QString &name)
 390 {
 391         (void)name;
 392
 393         SignalBase* sb = qobject_cast<SignalBase*>(QObject::sender());
 394         assert(sb);
 395
 396         DecodeSignal* signal = dynamic_cast<DecodeSignal*>(sb);
 397         assert(signal);
 398
 399         // Update all decoder entries provided by this signal
 400         auto stack = signal->decoder_stack();
 401         if (stack.size() > 1) {
 402                 for (const shared_ptr<Decoder>& dec : stack) {
 403                         QString title = QString("%1 (%2)").arg(signal->name(), dec->name());
 404                         int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 405
 406                         if (index != -1)
 407                                 decoder_selector_->setItemText(index, title);
 408                 }
 409         } else
 410                 if (!stack.empty()) {
 411                         shared_ptr<Decoder>& dec = stack.at(0);
 412                         int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 413
 414                         if (index != -1)
 415                                 decoder_selector_->setItemText(index, signal->name());
 416                 }
 417 }
 418
 419 void View::on_new_binary_data(unsigned int segment_id, void* decoder, unsigned int bin_class_id)
 420 {
 421         if ((segment_id == current_segment_) && (decoder == decoder_) && (bin_class_id == bin_class_id_))
 422                 if (!delayed_view_updater_.isActive())
 423                         delayed_view_updater_.start();
 424 }
 425
 426 void View::on_decoder_stacked(void* decoder)
 427 {
 428         // TODO This doesn't change existing entries for the same signal - but it should as the naming scheme may change
 429
 430         Decoder* d = static_cast<Decoder*>(decoder);
 431
 432         // Only add the decoder if it has binary output
 433         if (d->get_binary_class_count() == 0)
 434                 return;
 435
 436         // Find the signal that contains the selected decoder
 437         DecodeSignal* signal = nullptr;
 438
 439         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 440                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 441                         if (d == dec.get())
 442                                 signal = ds.get();
 443
 444         assert(signal);
 445
 446         // Add the decoder to the list
 447         QString title = QString("%1 (%2)").arg(signal->name(), d->name());
 448         decoder_selector_->addItem(title, QVariant::fromValue((void*)d));
 449 }
 450
 451 void View::on_decoder_removed(void* decoder)
 452 {
 453         Decoder* d = static_cast<Decoder*>(decoder);
 454
 455         // Remove the decoder from the list
 456         int index = decoder_selector_->findData(QVariant::fromValue((void*)d));
 457
 458         if (index != -1)
 459                 decoder_selector_->removeItem(index);
 460 }
 461
 462 void View::on_actionSave_triggered(QAction* action)
 463 {
 464         int save_type = SaveTypeBinary;
 465         if (action)
 466                 save_type = action->data().toInt();
 467
 468         switch (save_type)
 469         {
 470         case SaveTypeBinary: save_data(); break;
 471         case SaveTypeHexDumpPlain: save_data_as_hex_dump(false, false); break;
 472         case SaveTypeHexDumpWithOffset: save_data_as_hex_dump(true, false); break;
 473         case SaveTypeHexDumpComplete: save_data_as_hex_dump(true, true); break;
 474         }
 475 }
 476
 477 void View::on_metadata_object_changed(MetadataObject* obj,
 478         MetadataValueType value_type)
 479 {
 480         // Check if we need to update the model's data range. We only work on the
 481         // end sample value because the start sample value is updated first and
 482         // we need both
 483         if ((obj->type() == MetadataObjMainViewRange) &&
 484                 (value_type == MetadataValueEndSample)) {
 485
 486                 int64_t start_sample = obj->value(MetadataValueStartSample).toLongLong();
 487                 int64_t end_sample = obj->value(MetadataValueEndSample).toLongLong();
 488
 489                 hex_view_->set_visible_sample_range(start_sample, end_sample);
 490         }
 491
 492         if (obj->type() == MetadataObjMousePos)
 493                 hex_view_->set_highlighted_data_sample(obj->value(MetadataValueStartSample).toLongLong());
 494 }
 495
 496 void View::perform_delayed_view_update()
 497 {
 498         if (signal_ && !binary_data_exists_)
 499                 if (signal_->get_binary_data_chunk_count(current_segment_, decoder_, bin_class_id_))
 500                         binary_data_exists_ = true;
 501
 502         update_data();
 503 }
 504
 505
 506 } // namespace decoder_binary
 507 } // namespace views
 508 } // namespace pv