dirac_vlc.c File Reference

#include "libavutil/mem_internal.h"
#include "dirac_vlc.h"

Go to the source code of this file.

Data Structures
struct	LUTState

Macros
#define	PROCESS_VALS

Enumerations
enum	{ STATE_START = 0, STATE_FOLLOW = 256, STATE_DATA = 512, STATE_SIGN = 768 }

Functions
int	ff_dirac_golomb_read_16bit (const uint8_t *buf, int bytes, uint8_t *_dst, int coeffs)
int	ff_dirac_golomb_read_32bit (const uint8_t *buf, int bytes, uint8_t *_dst, int coeffs)

Variables
static const LUTState	dirac_golomb_lut [1024]

Macro Definition Documentation

PROCESS_VALS

#define PROCESS_VALS

Value:

    do {                                               \
        val  <<= lut.val0_bits;                        \
        val   |= lut.val0;                             \
        dst[0] = (val - 1) * lut.sign;                 \
        dst[1] = lut.val1;                             \
        dst[2] = lut.val2;                             \
        dst[3] = lut.val3;                             \
        dst[4] = lut.val4;                             \
        dst[5] = 0;                                    \
        dst[6] = 0;                                    \
        dst[7] = 0;                                    \
        if (lut.num)                                   \
            val = lut.val;                             \
        dst += lut.num;                                \
        if (dst >= last)                               \
            return coeffs;                             \
        lut = dirac_golomb_lut[lut.state + *buf++];    \
    } while (0)

Definition at line 1075 of file dirac_vlc.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
STATE_START
STATE_FOLLOW
STATE_DATA
STATE_SIGN

Definition at line 23 of file dirac_vlc.c.

Function Documentation

ff_dirac_golomb_read_16bit()

int ff_dirac_golomb_read_16bit	(	const uint8_t *	buf,
		int	bytes,
		uint8_t *	_dst,
		int	coeffs
	)

Definition at line 1095 of file dirac_vlc.c.

Referenced by decode_hq_slice().

ff_dirac_golomb_read_32bit()

int ff_dirac_golomb_read_32bit	(	const uint8_t *	buf,
		int	bytes,
		uint8_t *	_dst,
		int	coeffs
	)

Definition at line 1115 of file dirac_vlc.c.

Referenced by decode_hq_slice().

Variable Documentation

dirac_golomb_lut

const LUTState dirac_golomb_lut[1024]

static

Definition at line 48 of file dirac_vlc.c.

Referenced by ff_dirac_golomb_read_16bit(), and ff_dirac_golomb_read_32bit().