Ui::Loudness::LoudnessMonitor Struct Reference

Inheritance diagram for Ui::Loudness::LoudnessMonitor:

Detailed Description

Besides the readings, the monitor recycles measurement states, as libebur128 has no reset: a reset swaps in a spare state and retires the used one, and recycle(), which the node's worker runs off the execution thread whether or not the process is shown, destroys the retired states and builds new spares. The execution thread never allocates nor frees.

Public Member Functions
void	recycle ()
int	freeRetiredSlot () const noexcept
ebur128_state *	takeSpare (unsigned long samplerate) noexcept
Public Member Functions inherited from Process::Monitor
	Monitor (const Monitor &)=delete
Monitor &	operator= (const Monitor &)=delete
bool	watched () const noexcept

Public Attributes
Process::LatestValue< Readings >	readings
std::atomic_bool	reset {}
std::array< std::atomic< ebur128_state * >, slots >	spare {}
std::array< std::atomic< ebur128_state * >, slots >	retired {}
std::atomic< double >	rate {48000.}
	The rate spares are built for.
std::atomic_bool	recycling {}
	Set when a recycle() is requested, cleared once it is done.
Public Attributes inherited from Process::Monitor
std::atomic< int >	viewers {0}

Static Public Attributes
static constexpr int	slots = 2

Member Function Documentation

freeRetiredSlot()

int Ui::Loudness::LoudnessMonitor::freeRetiredSlot ( ) const

inlinenoexcept

Execution thread, the only one to fill retired slots: one that is empty and stays so until it fills it, or -1.

recycle()

void Ui::Loudness::LoudnessMonitor::recycle ( )

inline

Not on the execution thread: destroys the retired states and fills the empty spare slots.

takeSpare()

ebur128_state * Ui::Loudness::LoudnessMonitor::takeSpare ( unsigned long  samplerate )

inlinenoexcept

Execution thread: a spare state for samplerate, or null when none is ready. A spare built for another rate is retired on the way, while there is room for it.

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The documentation for this struct was generated from the following file:

• Loudness.hpp