libavcodec/jpegls.h File Reference

JPEG-LS common code. More...

#include "avcodec.h"

Go to the source code of this file.

Data Structures
struct	JpeglsContext
struct	JLSState
Defines
#define	R(a, i)   (bits == 8 ? ((uint8_t*)(a))[i] : ((uint16_t*)(a))[i] )
#define	W(a, i, v)   (bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v))
Functions
void	ff_jpegls_init_state (JLSState *state)
	Calculate initial JPEG-LS parameters.
static int	ff_jpegls_quantize (JLSState *s, int v)
	Calculate quantized gradient value, used for context determination.
void	ff_jpegls_reset_coding_parameters (JLSState *s, int reset_all)
	Calculate JPEG-LS codec values.
static void	ff_jpegls_downscale_state (JLSState *state, int Q)
static int	ff_jpegls_update_state_regular (JLSState *state, int Q, int err)
Variables
const uint8_t	ff_log2_run [32]

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Detailed Description

JPEG-LS common code.

Definition in file jpegls.h.

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Define Documentation

#define R	(	a,
		i		)	(bits == 8 ? ((uint8_t*)(a))[i] : ((uint16_t*)(a))[i] )

Definition at line 108 of file jpegls.h.

#define W	(	a,
		i,
		v		)	(bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v))

Definition at line 109 of file jpegls.h.

Referenced by init_demo(), ls_decode_line(), ls_encode_line(), and main().

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Function Documentation

static void ff_jpegls_downscale_state	(	JLSState *	state,
		int	Q
	)			[inline, static]

Definition at line 79 of file jpegls.h.

Referenced by ff_jpegls_update_state_regular(), ls_encode_runterm(), and ls_get_code_runterm().

void ff_jpegls_init_state

(

JLSState *

state

)

Calculate initial JPEG-LS parameters.

Definition at line 30 of file jpegls.c.

Referenced by encode_picture_ls(), and ff_jpegls_decode_picture().

static int ff_jpegls_quantize	(	JLSState *	s,
		int	v
	)			[inline, static]

Calculate quantized gradient value, used for context determination.

Definition at line 56 of file jpegls.h.

Referenced by ls_decode_line(), and ls_encode_line().

void ff_jpegls_reset_coding_parameters	(	JLSState *	s,
		int	reset_all
	)

Calculate JPEG-LS codec values.

Definition at line 59 of file jpegls.c.

Referenced by encode_picture_ls(), ff_jpegls_decode_picture(), and ls_store_lse().

static int ff_jpegls_update_state_regular	(	JLSState *	state,
		int	Q,
		int	err
	)			[inline, static]

Definition at line 88 of file jpegls.h.

Referenced by ls_encode_regular(), and ls_get_code_regular().

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Variable Documentation

const uint8_t ff_log2_run[32]

Definition at line 33 of file bitstream.c.

Referenced by decode_line(), ls_decode_line(), ls_encode_line(), and ls_encode_run().