bitstream.c File Reference

#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "spandsp/telephony.h"
#include "spandsp/bitstream.h"

Functions
void	bitstream_put (bitstream_state_t *s, uint8_t **c, unsigned int value, int bits)
	Put a chunk of bits into the output buffer.
void	bitstream_put2 (bitstream_state_t *s, uint8_t **c, unsigned int value, int bits)
unsigned int	bitstream_get (bitstream_state_t *s, const uint8_t **c, int bits)
	Get a chunk of bits from the input buffer.
unsigned int	bitstream_get2 (bitstream_state_t *s, const uint8_t **c, int bits)
void	bitstream_flush (bitstream_state_t *s, uint8_t **c)
	Flush any residual bit to the output buffer.
void	bitstream_flush2 (bitstream_state_t *s, uint8_t **c)
bitstream_state_t *	bitstream_init (bitstream_state_t *s)
	Initialise a bitstream context.

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Detailed Description

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Function Documentation

void bitstream_flush	(	bitstream_state_t *	s,
		uint8_t **	c
	)

Flush any residual bit to the output buffer.

Parameters:

	s	A pointer to the bitstream context.
	c	A pointer to the bitstream output buffer.

References bitstream_state_t::bitstream, and bitstream_state_t::residue.

unsigned int bitstream_get	(	bitstream_state_t *	s,
		const uint8_t **	c,
		int	bits
	)

Get a chunk of bits from the input buffer.

Parameters:

	s	A pointer to the bitstream context.
	c	A pointer to the bitstream input buffer.
	bits	The number of bits of value to be grabbed. 1 to 25 bit is valid.

Returns:

The value retrieved from the input buffer.

References bitstream_state_t::bitstream, and bitstream_state_t::residue.

bitstream_state_t* bitstream_init

(

bitstream_state_t *

s

)

Initialise a bitstream context.

Parameters:

s

A pointer to the bitstream context.

Returns:

A pointer to the bitstream context.

References bitstream_state_t::bitstream, and bitstream_state_t::residue.

Referenced by g726_init().

void bitstream_put	(	bitstream_state_t *	s,
		uint8_t **	c,
		unsigned int	value,
		int	bits
	)

Put a chunk of bits into the output buffer.

Parameters:

	s	A pointer to the bitstream context.
	c	A pointer to the bitstream output buffer.
	value	The value to be pushed into the output buffer.
	bits	The number of bits of value to be pushed. 1 to 25 bit is valid.

References bitstream_state_t::bitstream, and bitstream_state_t::residue.