time-grid.hpp File Reference

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Description

To establish a reference scale for quantised time values.

Contrary to the continuous Time values (Lumiera internal time scale), quantised time can only take on some discrete values corresponding to blocks or frames, according to the respective timecode format. The act of quantising continuous time values requires the definition of a time grid of such allowed time values. At least, the specification of a time origin and a frame spacing is required, but there might be way more elaborate specifications, e.g. a grid varying over time.

Time grid specifications are integrated into Lumiera's framework for meta assets, automation, configuration and similar metadata.

using time grids

TimeGrid is an interface (ABC), but provides some actual factory functions, which can be used as a convenience shortcut to fabricate the kind of simple time grid used most often.

See also

MetaFactory creating concrete asset::Meta instances

time::Quantiser

Definition in file time-grid.hpp.

#include "steam/asset/meta.hpp"
#include "lib/idi/entry-id.hpp"
#include "lib/time/grid.hpp"
#include "lib/time/timevalue.hpp"
#include "lib/symbol.hpp"

Classes
struct	Builder< TimeGrid >
class	TimeGrid
	Interface: a grid and scale definition for time quantisation. More...

Typedefs
using	GridID = lib::idi::EntryID< TimeGrid >
using	PGrid = lib::P< TimeGrid >

Namespaces
	steam
	Steam-Layer implementation namespace root.
	steam::asset
	The asset subsystem of the Steam-Layer.