rangecoder.h File Reference

#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/intmath.h"

Go to the source code of this file.

Data Structures
struct	RangeCoder

Macros
#define	MAX_OVERREAD   2

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, int version)
	Terminates the range coder. More...
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)

Detailed Description

Range coder.

Definition in file rangecoder.h.

Macro Definition Documentation

MAX_OVERREAD

#define MAX_OVERREAD   2

Definition at line 46 of file rangecoder.h.

Function Documentation

ff_init_range_encoder()

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

Definition at line 42 of file rangecoder.c.

Referenced by encode_frame(), ff_ffv1_write_extradata(), ff_init_range_decoder(), and main().

ff_init_range_decoder()

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

Definition at line 53 of file rangecoder.c.

Referenced by decode_frame(), main(), mxf_parse_ffv1_frame(), and read_extra_header().

ff_rac_terminate()

int ff_rac_terminate	(	RangeCoder *	c,
		int	version
	)

Terminates the range coder.

Parameters

version

version 0 requires the decoder to know the data size in bytes version 1 needs about 1 bit more space but does not need to carry the size from encoder to decoder

Definition at line 109 of file rangecoder.c.

Referenced by encode_frame(), encode_slice(), ff_ffv1_write_extradata(), and main().

ff_build_rac_states()

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

Definition at line 68 of file rangecoder.c.

Referenced by decode_frame(), encode_frame(), encode_init_internal(), ff_ffv1_encode_init(), ff_ffv1_write_extradata(), main(), mxf_parse_ffv1_frame(), and read_extra_header().

renorm_encoder()

static void renorm_encoder ( RangeCoder *  c )

inlinestatic

Definition at line 62 of file rangecoder.h.

Referenced by ff_rac_terminate(), and put_rac().

get_rac_count()

static int get_rac_count ( RangeCoder *  c )

inlinestatic

Definition at line 85 of file rangecoder.h.

Referenced by encode_q_branch().

put_rac()

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

inlinestatic

Definition at line 93 of file rangecoder.h.

refill()

static void refill ( RangeCoder *  c )

inlinestatic

Definition at line 113 of file rangecoder.h.

Referenced by get_rac().

get_rac()

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

inlinestatic

Definition at line 126 of file rangecoder.h.

Referenced by decode_frame(), decode_header(), decode_line(), decode_q_branch(), decode_slice(), decode_slice_header(), get_ffv1_unsigned_symbol(), get_symbol(), get_symbol2(), get_symbol_inline(), main(), mxf_parse_ffv1_frame(), rac_check_termination(), read_extra_header(), read_header(), and unpack_coeffs().