crmap.h File Reference

Channel range map interface. More...

#include <stdint.h>

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Functions
int	CMap_read (const char *fp, struct cr_s **cr)
	Reads a channel range map from the given file path. The channel range map is a linked list of channel range nodes that map sequence channel indices to unit and circuit numbers. The caller is responsible for freeing the returned channel range map using CMap_free.
void	CMap_free (struct cr_s *cr)
	Frees the given channel range map by walking the linked list and freeing each node.
int	CMap_lookup (const struct cr_s *cr, uint32_t id, uint8_t *unit, uint16_t *circuit)
	Remaps the given sequence channel index to a unit and circuit number using the channel range mapping. The result is written to the given unit and circuit pointers.

Detailed Description

Channel range map interface.

Function Documentation

CMap_free()

void CMap_free

(

struct cr_s *

cr

)

Frees the given channel range map by walking the linked list and freeing each node.

Parameters

cr	channel range map to free

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CMap_lookup()

int CMap_lookup	(	const struct cr_s *	cr,
		uint32_t	id,
		uint8_t *	unit,
		uint16_t *	circuit )

Remaps the given sequence channel index to a unit and circuit number using the channel range mapping. The result is written to the given unit and circuit pointers.

Parameters

cr	channel range map to use for remapping
id	sequence channel index to remap
unit	pointer to write the unit number to
circuit	pointer to write the circuit number to

Returns

non-zero on success, zero on failure

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CMap_read()

int CMap_read	(	const char *	fp,
		struct cr_s **	cr )

Reads a channel range map from the given file path. The channel range map is a linked list of channel range nodes that map sequence channel indices to unit and circuit numbers. The caller is responsible for freeing the returned channel range map using CMap_free.

Parameters

fp	file path to read from
cr	pointer to write the channel range map to

Returns

0 on success, or a negative error code on failure

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