sonic.c File Reference

#include "config_components.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "encode.h"
#include "get_bits.h"
#include "golomb.h"
#include "put_golomb.h"
#include "rangecoder.h"

Go to the source code of this file.

Data Structures
struct	SonicContext

Macros
#define	MAX_CHANNELS   2
#define	MID_SIDE   0
#define	LEFT_SIDE   1
#define	RIGHT_SIDE   2
#define	LATTICE_SHIFT   10
#define	SAMPLE_SHIFT   4
#define	LATTICE_FACTOR   (1 << LATTICE_SHIFT)
#define	SAMPLE_FACTOR   (1 << SAMPLE_SHIFT)
#define	BASE_QUANT   0.6
#define	RATE_VARIATION   3.0
#define	put_rac(C, S, B)

Functions
static int	shift (int a, int b)
static int	shift_down (int a, int b)
static av_always_inline av_flatten void	put_symbol (RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2])
static av_flatten int	get_symbol (RangeCoder *c, uint8_t *state, int is_signed)
static int	intlist_write (RangeCoder *c, uint8_t *state, int *buf, int entries, int base_2_part)
static int	intlist_read (RangeCoder *c, uint8_t *state, int *buf, int entries, int base_2_part)
static void	predictor_init_state (int *k, int *state, int order)
static int	predictor_calc_error (int *k, int *state, int order, int error)

Detailed Description

Simple free lossless/lossy audio codec Based on Paul Francis Harrison's Bonk (http://www.logarithmic.net/pfh/bonk) Written and designed by Alex Beregszaszi

TODO:

• CABAC put/get_symbol
• independent quantizer for channels
• >2 channels support
• more decorrelation types
• more tap_quant tests
• selectable intlist writers/readers (bonk-style, golomb, cabac)

Definition in file sonic.c.

Macro Definition Documentation

MAX_CHANNELS

#define MAX_CHANNELS   2

Definition at line 50 of file sonic.c.

MID_SIDE

#define MID_SIDE   0

Definition at line 52 of file sonic.c.

LEFT_SIDE

#define LEFT_SIDE   1

Definition at line 53 of file sonic.c.

RIGHT_SIDE

#define RIGHT_SIDE   2

Definition at line 54 of file sonic.c.

LATTICE_SHIFT

#define LATTICE_SHIFT   10

Definition at line 81 of file sonic.c.

SAMPLE_SHIFT

#define SAMPLE_SHIFT   4

Definition at line 82 of file sonic.c.

LATTICE_FACTOR

#define LATTICE_FACTOR   (1 << LATTICE_SHIFT)

Definition at line 83 of file sonic.c.

SAMPLE_FACTOR

#define SAMPLE_FACTOR   (1 << SAMPLE_SHIFT)

Definition at line 84 of file sonic.c.

BASE_QUANT

#define BASE_QUANT   0.6

Definition at line 86 of file sonic.c.

RATE_VARIATION

#define RATE_VARIATION   3.0

Definition at line 87 of file sonic.c.

put_rac

#define put_rac	(		C,
			S,
			B
	)

Value:

do{\
    if(rc_stat){\
        rc_stat[*(S)][B]++;\
        rc_stat2[(S)-state][B]++;\
    }\
    put_rac(C,S,B);\
}while(0)

Function Documentation

shift()

static int shift ( int  a, int  b  )

inlinestatic

Definition at line 89 of file sonic.c.

shift_down()

static int shift_down ( int  a, int  b  )

inlinestatic

Definition at line 94 of file sonic.c.

Referenced by predictor_calc_error(), and predictor_init_state().

put_symbol()

static av_always_inline av_flatten void put_symbol ( RangeCoder *  c, uint8_t *  state, int  v, int  is_signed, uint64_t  rc_stat[256][2], uint64_t  rc_stat2[32][2]  )

static

Definition at line 99 of file sonic.c.

Referenced by intlist_write().

get_symbol()

static av_flatten int get_symbol ( RangeCoder *  c, uint8_t *  state, int  is_signed  )

inlinestatic

Definition at line 146 of file sonic.c.

Referenced by intlist_read().

intlist_write()

static int intlist_write ( RangeCoder *  c, uint8_t *  state, int *  buf, int  entries, int  base_2_part  )

inlinestatic

Definition at line 170 of file sonic.c.

intlist_read()

static int intlist_read ( RangeCoder *  c, uint8_t *  state, int *  buf, int  entries, int  base_2_part  )

inlinestatic

Definition at line 180 of file sonic.c.

predictor_init_state()

static void predictor_init_state ( int *  k, int *  state, int  order  )

static

Definition at line 458 of file sonic.c.

predictor_calc_error()

static int predictor_calc_error ( int *  k, int *  state, int  order, int  error  )

static

Definition at line 475 of file sonic.c.