| Directory: | ./ |
|---|---|
| File: | qtpdcom/QtPdCom1/Transmission.h |
| Date: | 2024-11-17 04:08:36 |
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| Lines: | 3 | 7 | 42.9% |
| Branches: | 4 | 12 | 33.3% |
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| 1 | /***************************************************************************** | ||
| 2 | * | ||
| 3 | * Copyright (C) 2022 Florian Pose <fp@igh.de> | ||
| 4 | * | ||
| 5 | * This file is part of the QtPdCom library. | ||
| 6 | * | ||
| 7 | * The QtPdCom library is free software: you can redistribute it and/or modify | ||
| 8 | * it under the terms of the GNU Lesser General Public License as published by | ||
| 9 | * the Free Software Foundation, either version 3 of the License, or (at your | ||
| 10 | * option) any later version. | ||
| 11 | * | ||
| 12 | * The QtPdCom library is distributed in the hope that it will be useful, but | ||
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
| 14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | ||
| 15 | * License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public License | ||
| 18 | * along with the QtPdCom Library. If not, see <http://www.gnu.org/licenses/>. | ||
| 19 | * | ||
| 20 | ****************************************************************************/ | ||
| 21 | |||
| 22 | #ifndef QTPDCOM_TRANSMISSION_H | ||
| 23 | #define QTPDCOM_TRANSMISSION_H | ||
| 24 | |||
| 25 | #include <pdcom5/Subscriber.h> // PdCom::Transmission | ||
| 26 | |||
| 27 | #include "Export.h" | ||
| 28 | |||
| 29 | #include <chrono> | ||
| 30 | #include <stdexcept> | ||
| 31 | |||
| 32 | namespace QtPdCom { | ||
| 33 | |||
| 34 | /****************************************************************************/ | ||
| 35 | |||
| 36 | /// Tag for event-based subscription. | ||
| 37 | constexpr struct event_mode_tag | ||
| 38 | { | ||
| 39 | } event_mode; | ||
| 40 | |||
| 41 | /// Tag for poll-based subscription. | ||
| 42 | constexpr struct poll_mode_tag | ||
| 43 | { | ||
| 44 | } poll_mode; | ||
| 45 | |||
| 46 | class QTPDCOM_PUBLIC Poll | ||
| 47 | { | ||
| 48 | public: | ||
| 49 | template <typename T, typename R> | ||
| 50 | constexpr Poll(std::chrono::duration<T, R> d): | ||
| 51 | interval_(checkInterval( | ||
| 52 | std::chrono::duration_cast<std::chrono::duration<double>>(d))) | ||
| 53 | {} | ||
| 54 | |||
| 55 | constexpr std::chrono::duration<double> getInterval() const { | ||
| 56 | return interval_; | ||
| 57 | } | ||
| 58 | |||
| 59 | private: | ||
| 60 | std::chrono::duration<double> interval_; | ||
| 61 | |||
| 62 | static constexpr std::chrono::duration<double> checkInterval( | ||
| 63 | std::chrono::duration<double> d) | ||
| 64 | { | ||
| 65 | return d.count() <= 0 ? throw std::invalid_argument( | ||
| 66 | "Poll period must be greater than zero") | ||
| 67 | : d; | ||
| 68 | } | ||
| 69 | }; | ||
| 70 | |||
| 71 | /** Transmission mode for subscriptions. | ||
| 72 | * | ||
| 73 | * This class specifies whether a subscription should be updated periodically, | ||
| 74 | * event-based or by polling only. | ||
| 75 | * | ||
| 76 | */ | ||
| 77 | class QTPDCOM_PUBLIC Transmission | ||
| 78 | { | ||
| 79 | |||
| 80 | public: | ||
| 81 | 1 | constexpr double getInterval() const noexcept { return interval_; } | |
| 82 | |||
| 83 | template <typename T, typename R> | ||
| 84 | constexpr Transmission(std::chrono::duration<T, R> d) : | ||
| 85 | mode_(Continuous), | ||
| 86 | interval_(checkInterval( | ||
| 87 | std::chrono::duration_cast<std::chrono::duration<double>>(d) | ||
| 88 | .count())) | ||
| 89 | {} | ||
| 90 | |||
| 91 | ✗ | constexpr Transmission(event_mode_tag) noexcept : | |
| 92 | ✗ | mode_(Event), interval_(0.0) {} | |
| 93 | |||
| 94 | constexpr Transmission(poll_mode_tag, double interval) : | ||
| 95 | mode_(Poll), interval_(checkInterval(interval)) {} | ||
| 96 | |||
| 97 | constexpr Transmission(const Poll &poll): | ||
| 98 | mode_(Poll), interval_(poll.getInterval().count()) {} | ||
| 99 | |||
| 100 | bool operator==(const Transmission &o) const noexcept | ||
| 101 | { | ||
| 102 | return o.interval_ == interval_ and o.mode_ == mode_; | ||
| 103 | } | ||
| 104 | |||
| 105 | ✗ | constexpr bool isContinuous() const | |
| 106 | { | ||
| 107 | ✗ | return mode_ == Continuous and interval_ > 0.0; | |
| 108 | } | ||
| 109 | |||
| 110 | 2 | constexpr bool isPoll() const | |
| 111 | { | ||
| 112 |
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2 | return mode_ == Poll and interval_ > 0.0; |
| 113 | } | ||
| 114 | |||
| 115 | PdCom::Transmission toPdCom() const; | ||
| 116 | QString toString() const; | ||
| 117 | |||
| 118 | private: | ||
| 119 | enum { | ||
| 120 | Poll = -1, | ||
| 121 | Event, | ||
| 122 | Continuous | ||
| 123 | } mode_; | ||
| 124 | |||
| 125 | double interval_; | ||
| 126 | |||
| 127 | static constexpr double checkInterval(double d) | ||
| 128 | { | ||
| 129 | return d <= 0 ? throw std::invalid_argument( | ||
| 130 | "Interval must be greater than zero") | ||
| 131 | : d; | ||
| 132 | } | ||
| 133 | |||
| 134 | }; | ||
| 135 | |||
| 136 | /****************************************************************************/ | ||
| 137 | |||
| 138 | } // namespace | ||
| 139 | |||
| 140 | #endif | ||
| 141 |