bitstream.c File Reference

#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "g722_1/g722_1.h"
#include "bitstream.h"

Functions
void	g722_1_bitstream_put (g722_1_bitstream_state_t *s, uint8_t **c, uint32_t value, int bits)
	Put a chunk of bits into the output buffer.
uint32_t	g722_1_bitstream_get (g722_1_bitstream_state_t *s, const uint8_t **c, int bits)
	Get a chunk of bits from the input buffer.
void	g722_1_bitstream_flush (g722_1_bitstream_state_t *s, uint8_t **c)
	Flush any residual bit to the output buffer.
g722_1_bitstream_state_t *	g722_1_bitstream_init (g722_1_bitstream_state_t *s)
	Initialise a bitstream context.

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Detailed Description

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Function Documentation

void g722_1_bitstream_flush	(	g722_1_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 g722_1_bitstream_state_t::bitstream, and g722_1_bitstream_state_t::residue.

uint32_t g722_1_bitstream_get	(	g722_1_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 32 bits is valid.

Returns:

The value retrieved from the input buffer.

References g722_1_bitstream_state_t::bitstream, and g722_1_bitstream_state_t::residue.

g722_1_bitstream_state_t* g722_1_bitstream_init

(

g722_1_bitstream_state_t *

s

)

Initialise a bitstream context.

Parameters:

s	A pointer to the bitstream context.

Returns:

A pointer to the bitstream context.

References g722_1_bitstream_state_t::bitstream, and g722_1_bitstream_state_t::residue.

Referenced by g722_1_decode(), and g722_1_fillin().

void g722_1_bitstream_put	(	g722_1_bitstream_state_t *	s,
		uint8_t **	c,
		uint32_t	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 32 bits is valid.

References g722_1_bitstream_state_t::bitstream, and g722_1_bitstream_state_t::residue.