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GLAST / LAT > DAQ and FSW > FSW > Doxygen Index> LSEC / V6-1-0 > lsec / sun-gcc

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compress.ic File Reference

The histogram and compress functions, as static inlines for efficiency. More...

#include "compress_p.h"
#include "LDT/APE.h"

Functions
static void	LSEC_compress (LSEC_compression *cpr, void *ctx, unsigned sym)
	Encode a symbol using the frequency and lookup table supplied by a compression.
static void	LSEC_histogram (LSEC_compression *cpr, unsigned sym)
	Increment the bin of the histogram corresponding.

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Detailed Description

The histogram and compress functions, as static inlines for efficiency.

Author:

James Swain & Owen Saxton

Id

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Function Documentation

void LSEC_compress	(	LSEC_compression *	cpr,
		void *	ctx,
		unsigned	sym
	)			[inline, static]

Encode a symbol using the frequency and lookup table supplied by a compression.

This function does not return errors since propogation of those errors to a point in LSEC where reasonable decisions about error handling can be made is problematic. Instead, errors are latched and can be checked using LSEC_checkCompression.

Parameters:

	cpr	Pointer to an initialsed, populated and processed compression structure
	ctx	Context, pointer to the arithmetic encoder context
	sym	Symbol to compress

void LSEC_histogram	(	LSEC_compression *	cpr,
		unsigned	sym
	)			[inline, static]

Increment the bin of the histogram corresponding.

Parameters:

	cpr	Pointer to an allocated, initialised, compression structure
	sym	Symbol to add to the histogram

This function does not return errors since propogation of those errors to a point in LSEC where reasonable decisions about error handling can be made is problematic. Instead, errors are latched and can be checked using LSEC_checkCompression.

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