libavcodec/rangecoder.h File Reference

Range coder. More...

#include <stdint.h>
#include <assert.h>
#include "libavutil/common.h"

Go to the source code of this file.

Data Structures
struct	RangeCoder
Functions
void	ff_init_range_encoder (RangeCoder *c, uint8_t *buf, int buf_size)
void	ff_init_range_decoder (RangeCoder *c, const uint8_t *buf, int buf_size)
int	ff_rac_terminate (RangeCoder *c)
void	ff_build_rac_states (RangeCoder *c, int factor, int max_p)
static void	renorm_encoder (RangeCoder *c)
static int	get_rac_count (RangeCoder *c)
static void	put_rac (RangeCoder *c, uint8_t *const state, int bit)
static void	refill (RangeCoder *c)
static int	get_rac (RangeCoder *c, uint8_t *const state)

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Detailed Description

Range coder.

Definition in file rangecoder.h.

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Function Documentation

void ff_build_rac_states	(	RangeCoder *	c,
		int	factor,
		int	max_p
	)

Definition at line 59 of file rangecoder.c.

Referenced by decode_frame(), and encode_frame().

void ff_init_range_decoder	(	RangeCoder *	c,
		const uint8_t *	buf,
		int	buf_size
	)

Definition at line 52 of file rangecoder.c.

Referenced by decode_frame().

void ff_init_range_encoder	(	RangeCoder *	c,
		uint8_t *	buf,
		int	buf_size
	)

Definition at line 41 of file rangecoder.c.

Referenced by encode_frame(), and ff_init_range_decoder().

int ff_rac_terminate

(

RangeCoder *

c

)

Returns:

the number of bytes written

Definition at line 99 of file rangecoder.c.

Referenced by encode_frame().

static int get_rac	(	RangeCoder *	c,
		uint8_t *const	state
	)			[inline, static]

Definition at line 110 of file rangecoder.h.

Referenced by decode_frame(), decode_header(), decode_q_branch(), get_symbol(), get_symbol2(), read_header(), and unpack_coeffs().

static int get_rac_count

(

RangeCoder *

c

)

[inline, static]

Definition at line 75 of file rangecoder.h.

Referenced by encode_q_branch().

static void put_rac	(	RangeCoder *	c,
		uint8_t *const	state,
		int	bit
	)			[inline, static]

Definition at line 82 of file rangecoder.h.

Referenced by encode_header(), encode_q_branch(), encode_q_branch2(), encode_subband_c0run(), put_symbol(), and put_symbol2().

static void refill

(

RangeCoder *

c

)

[inline, static]

Definition at line 100 of file rangecoder.h.

static void renorm_encoder

(

RangeCoder *

c

)

[inline, static]

Definition at line 51 of file rangecoder.h.

Referenced by ff_rac_terminate(), and put_rac().