#include <stdint.h>

Include dependency graph for mrtk_has_rs.h:

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Functions
int	has_rs_init (void)
	Build the GF(256) log/antilog tables and the systematic generator matrix G. Idempotent: safe to call repeatedly; builds only once.
int	has_rs_decode (const uint8_t pages[][53], const uint8_t pids, int k, uint8_t out)
	Decode a k-page HAS message from k distinct received encoded pages using the RS(255,32,224) erasure decoder (ICD section 6.4).

Function Documentation

◆ has_rs_decode()

int has_rs_decode	(	const uint8_t	pages[][53],
		const uint8_t *	pids,
		int	k,
		uint8_t *	out )

Decode a k-page HAS message from k distinct received encoded pages using the RS(255,32,224) erasure decoder (ICD section 6.4).

Each received page is a 53-octet encoded payload carrying Page ID pids[i] (1..255). The encoded page with PID p corresponds to row p-1 of G; output column j (0-based) corresponds to message page j+1.

Parameters

[in]	pages	k encoded pages, pages[i] is the 53-octet payload of PID pids[i].
[in]	pids	k Page IDs (each 1..255), all distinct.
[in]	k	number of received pages / message pages, 1 <= k <= 32.
[out]	out	recovered message, k*53 octets (message pages concatenated, page 1 first).