pv/logging.hpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2018 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 #ifndef PULSEVIEW_PV_LOGGING_HPP
  21 #define PULSEVIEW_PV_LOGGING_HPP
  22
  23 #include "globalsettings.hpp"
  24
  25 #include <mutex>
  26
  27 #include <QtGlobal>
  28 #include <QObject>
  29 #include <QString>
  30 #include <QStringList>
  31
  32 using std::mutex;
  33
  34 namespace pv {
  35
  36 class Logging : public QObject, public GlobalSettingsInterface
  37 {
  38         Q_OBJECT
  39
  40 public:
  41         enum LogSource {
  42                 LogSource_pv,
  43                 LogSource_sr,
  44                 LogSource_srd
  45         };
  46
  47         static const int MIN_BUFFER_SIZE;
  48         static const int MAX_BUFFER_SIZE;
  49
  50 public:
  51         ~Logging();
  52         void init();
  53
  54         int get_log_level() const;
  55         void set_log_level(int level);
  56
  57         QString get_log() const;
  58
  59         void log(const QString &text, int source);
  60
  61         static void log_pv(QtMsgType type, const QMessageLogContext &context, const QString &msg);
  62
  63         static int log_sr(void *cb_data, int loglevel, const char *format, va_list args);
  64
  65 #ifdef ENABLE_DECODE
  66         static int log_srd(void *cb_data, int loglevel, const char *format, va_list args);
  67 #endif
  68
  69 private:
  70         void on_setting_changed(const QString &key, const QVariant &value);
  71
  72 Q_SIGNALS:
  73         void logged_text(QString s);
  74
  75 private:
  76         int buffer_size_;
  77         QStringList buffer_;
  78         mutable mutex log_mutex_;
  79 };
  80
  81 extern Logging logging;
  82
  83 } // namespace pv
  84
  85 #endif // PULSEVIEW_PV_LOGGING_HPP