quantiser.hpp File Reference

Go to the source code of this file.

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>

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

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

Namespaces
	lib
	Implementation namespace for support and library code.

---

Class Documentation

lib::time::anonymous_namespace{quantiser.hpp}::ValTrait

struct lib::time::anonymous_namespace{quantiser.hpp}::ValTrait

Collaboration diagram for ValTrait< NUM >:

Function Documentation

getDefaultGridFallback()

PQuant getDefaultGridFallback

(

)

Todo:

placeholder for accessing a current or default session grid.

To be implemented later.

Definition at line 38 of file quantiser.cpp.

References lib::time::getDefaultGridFallback().

Referenced by ValTrait< double >::asInt(), and lib::time::getDefaultGridFallback().

Here is the call graph for this function:

Here is the caller graph for this function: