quantiser.cpp File Reference

Implementation of support functions to create grid-aligned time and timecode values. More...

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Description

Implementation of support functions to create grid-aligned time and timecode values.

Definition in file quantiser.cpp.

#include "lib/time/quantiser.hpp"
#include "lib/time/timevalue.hpp"
#include "lib/time/timequant.hpp"
#include "lib/util-quant.hpp"
#include "lib/rational.hpp"

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

Functions
int64_t	calculate_quantisation (raw_time_64 time, uint64_t framerate, uint64_t framerate_divisor=1)
	Grid-align the raw time to a frame grid, which can be fractional.
PQuant	getDefaultGridFallback ()
	LUMIERA_ERROR_DEFINE (UNKNOWN_GRID, "referring to an undefined grid or scale in value quantisation")
int64_t	calculate_ntsc_drop_frame_number (raw_time_64 time)
	Compute the consecutive frame number from a given time, which is interpreted at the NTSC drop frame timecode grid.
raw_time_64	build_time_from_ntsc_drop_frame (uint frames, uint secs, uint mins, uint hours)
	Build effective time from a NTSC drop frame timecode.

Variables
const uint	FRAMES_PER_10min = 10*60 * 30000/1001
const uint	FRAMES_PER_1min = 1*60 * 30000/1001
const uint	DISCREPANCY = (1*60 * 30) - FRAMES_PER_1min