raw.h File Reference

Implementation of operations for raw encoding (RAW). More...

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Data Structures
struct	opj_raw
	RAW encoding operations. More...

Typedefs
typedef struct opj_raw	opj_raw_t
	RAW encoding operations.

Functions
Exported functions
opj_raw_t *	raw_create (void)
	Create a new RAW handle.
void	raw_destroy (opj_raw_t *raw)
	Destroy a previously created RAW handle.
int	raw_numbytes (opj_raw_t *raw)
	Return the number of bytes written/read since initialisation.
void	raw_init_dec (opj_raw_t *raw, unsigned char *bp, int len)
	Initialize the decoder.
int	raw_decode (opj_raw_t *raw)
	Decode a symbol using raw-decoder.

Detailed Description

Implementation of operations for raw encoding (RAW).

The functions in RAW.C have for goal to realize the operation of raw encoding linked with the corresponding mode switch.

Typedef Documentation

opj_raw_t

typedef struct opj_raw opj_raw_t

RAW encoding operations.

Function Documentation

raw_create()

opj_raw_t * raw_create

(

void

)

Create a new RAW handle.

Returns

Returns a new RAW handle if successful, returns NULL otherwise

References opj_malloc.

Referenced by t1_create().

raw_decode()

int raw_decode

(

opj_raw_t *

raw

)

Decode a symbol using raw-decoder.

Cfr p.506 TAUBMAN

Parameters

raw	RAW handle

Returns

Returns the decoded symbol (0 or 1)

References opj_raw::c, opj_raw::ct, opj_raw::len, opj_raw::lenmax, and opj_raw::start.

Referenced by t1_dec_refpass_step_raw(), and t1_dec_sigpass_step_raw().

raw_destroy()

void raw_destroy

(

opj_raw_t *

raw

)

Destroy a previously created RAW handle.

Parameters

raw	RAW handle to destroy

References opj_free.

Referenced by t1_destroy().

raw_init_dec()

void raw_init_dec	(	opj_raw_t *	raw,
		unsigned char *	bp,
		int	len )

Initialize the decoder.

Parameters

raw	RAW handle
bp	Pointer to the start of the buffer from which the bytes will be read
len	Length of the input buffer

References opj_raw::c, opj_raw::ct, opj_raw::len, opj_raw::lenmax, and opj_raw::start.

Referenced by t1_decode_cblk().

raw_numbytes()

int raw_numbytes

(

opj_raw_t *

raw

)

Return the number of bytes written/read since initialisation.

Parameters

raw	RAW handle to destroy

Returns

Returns the number of bytes already encoded

References opj_raw::bp, and opj_raw::start.