dirac_vlc.c File Reference

#include "dirac_vlc.h"

Go to the source code of this file.

Macros
#define	LUT_SIZE   (1 << LUT_BITS)
#define	RSIZE_BITS   (CHAR_BIT*sizeof(residual))
#define	CONVERT_TO_RESIDUE(a, b)   (((residual)(a)) << (RSIZE_BITS - (b)))
#define	INIT_RESIDUE(N)
#define	SET_RESIDUE(N, I, B)
#define	APPEND_RESIDUE(N, M)
#define	READ_BIT(N)   (((N) >> (N ## _count--)) & 1)

Functions
int	ff_dirac_golomb_read_32bit (DiracGolombLUT *lut_ctx, const uint8_t *buf, int bytes, uint8_t *_dst, int coeffs)
int	ff_dirac_golomb_read_16bit (DiracGolombLUT *lut_ctx, const uint8_t *buf, int bytes, uint8_t *_dst, int coeffs)
static void	search_for_golomb (DiracGolombLUT *l, residual r, int bits)
static void	generate_parity_lut (DiracGolombLUT *lut, int even)
static void	generate_offset_lut (DiracGolombLUT *lut, int off)
av_cold int	ff_dirac_golomb_reader_init (DiracGolombLUT **lut_ctx)
av_cold void	ff_dirac_golomb_reader_end (DiracGolombLUT **lut_ctx)

Macro Definition Documentation

LUT_SIZE

#define LUT_SIZE   (1 << LUT_BITS)

Definition at line 24 of file dirac_vlc.c.

RSIZE_BITS

#define RSIZE_BITS   (CHAR_BIT*sizeof(residual))

Definition at line 25 of file dirac_vlc.c.

CONVERT_TO_RESIDUE

#define CONVERT_TO_RESIDUE	(		a,
			b
	)		(((residual)(a)) << (RSIZE_BITS - (b)))

Definition at line 27 of file dirac_vlc.c.

INIT_RESIDUE

#define INIT_RESIDUE

(

N

)

Value:

    residual N = 0;                                                            \
    av_unused int32_t N ## _bits  = 0

Definition at line 30 of file dirac_vlc.c.

SET_RESIDUE

#define SET_RESIDUE	(		N,
			I,
			B
	)

Value:

    N          = CONVERT_TO_RESIDUE(I, B);                                     \
    N ## _bits = B

Definition at line 34 of file dirac_vlc.c.

APPEND_RESIDUE

#define APPEND_RESIDUE	(		N,
			M
	)

Value:

    N          |= M >> (N ## _bits);                                           \
    N ## _bits  = (N ## _bits + (M ## _bits)) & 0x3F

Definition at line 38 of file dirac_vlc.c.

READ_BIT

#define READ_BIT

(

N

)

(((N) >> (N ## _count--)) & 1)

Function Documentation

ff_dirac_golomb_read_32bit()

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

Definition at line 42 of file dirac_vlc.c.

Referenced by decode_hq_slice().

ff_dirac_golomb_read_16bit()

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

Definition at line 82 of file dirac_vlc.c.

Referenced by decode_hq_slice().

search_for_golomb()

static void search_for_golomb ( DiracGolombLUT *  l, residual  r, int  bits  )

inlinestatic

Definition at line 123 of file dirac_vlc.c.

Referenced by generate_offset_lut(), and generate_parity_lut().

generate_parity_lut()

static void generate_parity_lut ( DiracGolombLUT *  lut, int  even  )

static

Definition at line 168 of file dirac_vlc.c.

Referenced by ff_dirac_golomb_reader_init().

generate_offset_lut()

static void generate_offset_lut ( DiracGolombLUT *  lut, int  off  )

static

Definition at line 210 of file dirac_vlc.c.

Referenced by ff_dirac_golomb_reader_init().

ff_dirac_golomb_reader_init()

av_cold int ff_dirac_golomb_reader_init

(

DiracGolombLUT **

lut_ctx

)

Definition at line 232 of file dirac_vlc.c.

Referenced by dirac_decode_init().

ff_dirac_golomb_reader_end()

av_cold void ff_dirac_golomb_reader_end

(

DiracGolombLUT **

lut_ctx

)

Definition at line 249 of file dirac_vlc.c.

Referenced by dirac_decode_end().