quantiser.hpp File Reference

Library functions to support the formation of grid-aligned time values. More...

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Description

Library functions to support the formation of grid-aligned time values.

This is a crucial part of Lumiera's time and time handling framework; it serves as link between the precise internal time representation and various grid-aligned external standard time representations. The underlying theme is, by forcing all conversions to go through this central set of library functions, the notorious act of frame-aligning / grid-aligning time values, which can not be avoided, will at least be performed in a reproducible and predictable way. Moreover, the time handling library was built in a way such as to encourage use of the internal, abstracted yet precise time entities, so that the inevitable conversion to the imprecise but well-established external entities (frame numbers, SMPTE, drop frame, HMS) happens as late as possible.

Definition in file quantiser.hpp.

#include "lib/error.hpp"
#include "lib/time/grid.hpp"
#include "lib/time/formats.hpp"
#include "lib/time/timevalue.hpp"
#include "lib/iter-adapter.hpp"
#include <vector>
#include <string>
#include <cmath>

Namespaces
namespace	lib
	Implementation namespace for support and library code.
namespace	lib::time
namespace	lib::time::anonymous_namespace{quantiser.hpp}

Classes
struct	ValTrait< int >
struct	ValTrait< double >
class	Quantiser
	Facility to create grid-aligned time values. More...
class	FixedFrameQuantiser
	Simple stand-alone Quantiser implementation based on a constant sized gird. More...

Functions
	LUMIERA_ERROR_DECLARE (UNKNOWN_GRID)
	referring to an undefined grid or scale in value quantisation
PQuant	getDefaultGridFallback ()