hyperion.ng/include/hyperion/PriorityMuxer.h

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#pragma once
// STL includes
#include <vector>
#include <map>
#include <cstdint>
#include <limits>
// QT includes
#include <QMap>
// Utils includes
#include <utils/ColorRgb.h>
#include <utils/Components.h>
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///
/// The PriorityMuxer handles the priority channels. Led values input is written to the priority map
/// and the muxer keeps track of all active priorities. The current priority can be queried and per
/// priority the led colors.
///
class PriorityMuxer
{
public:
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///
/// The information structure for a single priority channel
///
struct InputInfo
{
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/// The priority of this channel
int priority;
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/// The absolute timeout of the channel
int64_t timeoutTime_ms;
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/// The colors for each led of the channel
std::vector<ColorRgb> ledColors;
hyperion::Components componentId;
};
/// The lowest possible priority, which is used when no priority channels are active
const static int LOWEST_PRIORITY = std::numeric_limits<uint8_t>::max();
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///
/// Constructs the PriorityMuxer for the given number of leds (used to switch to black when
/// there are no priority channels
///
/// @param ledCount The number of leds
///
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PriorityMuxer(int ledCount);
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///
/// Destructor
///
~PriorityMuxer();
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///
/// Returns the current priority
///
/// @return The current priority
///
int getCurrentPriority() const;
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///
/// Returns the state (enabled/disabled) of a specific priority channel
/// @param priority The priority channel
/// @return True if the priority channel exists else false
///
bool hasPriority(const int priority) const;
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///
/// Returns the number of active priorities
///
/// @return The list with active priorities
///
QList<int> getPriorities() const;
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///
/// Returns the information of a specified priority channel
///
/// @param priority The priority channel
///
/// @return The information for the specified priority channel
///
/// @throws std::runtime_error if the priority channel does not exist
///
const InputInfo& getInputInfo(const int priority) const;
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///
/// Sets/Updates the data for a priority channel
///
/// @param[in] priority The priority of the channel
/// @param[in] ledColors The led colors of the priority channel
/// @param[in] timeoutTime_ms The absolute timeout time of the channel
///
void setInput(const int priority, const std::vector<ColorRgb>& ledColors, const int64_t timeoutTime_ms=-1, hyperion::Components component=hyperion::COMP_INVALID);
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///
/// Clears the specified priority channel
///
/// @param[in] priority The priority of the channel to clear
///
void clearInput(const int priority);
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///
/// Clears all priority channels
///
void clearAll();
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///
/// Updates the current time. Channels with a configured time out will be checked and cleared if
/// required.
///
/// @param[in] now The current time
///
void setCurrentTime(const int64_t& now);
private:
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/// The current priority (lowest value in _activeInputs)
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int _currentPriority;
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/// The mapping from priority channel to led-information
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QMap<int, InputInfo> _activeInputs;
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/// The information of the lowest priority channel
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InputInfo _lowestPriorityInfo;
};