#include "opj_includes.h"
#include <limits.h>

Macros
#define	MIN_V1 0.0
	Minimum and maximum values for the double->pfp conversion. More...

#define	MAX_V1 17293822569102704640.0

#define	MIN_V2 0.000030517578125

#define	MAX_V2 131040.0

Functions
unsigned short int	jpwl_double_to_pfp (double V, int bytes)
	conversion between a double precision floating point number and the corresponding pseudo-floating point used to represent sensitivity values More...

double	jpwl_pfp_to_double (unsigned short int em, int bytes)
	conversion between a pseudo-floating point used to represent sensitivity values and the corresponding double precision floating point number More...

int	jpwl_markcomp (const void arg1, const void arg2)
	this function is used to compare two JPWL markers based on their relevant wishlist position More...

int	jpwl_epbs_add (opj_j2k_t j2k, jpwl_marker_t jwmarker, int jwmarker_num, opj_bool latest, opj_bool packed, opj_bool insideMH, int idx, int hprot, double place_pos, int tileno, unsigned long int pre_len, unsigned long int post_len)
	add a number of EPB marker segments More...

jpwl_epb_ms_t *	jpwl_epb_create (opj_j2k_t *j2k, opj_bool latest, opj_bool packed, int tileno, int idx, int hprot, unsigned long int pre_len, unsigned long int post_len)
	create an EPB marker segment More...

void	jpwl_epb_write (opj_j2k_t j2k, jpwl_epb_ms_t epb, unsigned char *buf)
	write an EPB MS to a buffer More...

jpwl_epc_ms_t *	jpwl_epc_create (opj_j2k_t *j2k, opj_bool esd_on, opj_bool red_on, opj_bool epb_on, opj_bool info_on)
	create an EPC marker segment More...

opj_bool	jpwl_epb_fill (opj_j2k_t j2k, jpwl_epb_ms_t epb, unsigned char buf, unsigned char post_buf)

opj_bool	jpwl_correct (opj_j2k_t *j2k)
	corrects the data in the JPWL codestream More...

opj_bool	jpwl_epb_correct (opj_j2k_t j2k, unsigned char buffer, int type, int pre_len, int post_len, int conn, unsigned char *L4_bufp)
	corrects the data protected by an EPB More...

void	jpwl_epc_write (opj_j2k_t j2k, jpwl_epc_ms_t epc, unsigned char *buf)
	write an EPC MS to a buffer More...

int	jpwl_esds_add (opj_j2k_t j2k, jpwl_marker_t jwmarker, int *jwmarker_num, int comps, unsigned char addrm, unsigned char ad_size, unsigned char senst, unsigned char se_size, double place_pos, int tileno)
	add a number of ESD marker segments More...

jpwl_esd_ms_t *	jpwl_esd_create (opj_j2k_t j2k, int comp, unsigned char addrm, unsigned char ad_size, unsigned char senst, int se_size, int tileno, unsigned long int svalnum, void sensval)
	create an EPC marker segment More...

opj_bool	jpwl_esd_fill (opj_j2k_t j2k, jpwl_esd_ms_t esd, unsigned char *buf)

void	jpwl_esd_write (opj_j2k_t j2k, jpwl_esd_ms_t esd, unsigned char *buf)
	write an ESD MS to a buffer More...

opj_bool	jpwl_update_info (opj_j2k_t j2k, jpwl_marker_t jwmarker, int jwmarker_num)
	updates the information structure by modifying the positions and lengths More...

Macro Definition Documentation

#define MAX_V1 17293822569102704640.0

Referenced by jpwl_double_to_pfp(), and jpwl_esd_fill().

#define MAX_V2 131040.0

Referenced by jpwl_double_to_pfp().

#define MIN_V1 0.0

Minimum and maximum values for the double->pfp conversion.

Referenced by jpwl_double_to_pfp().

#define MIN_V2 0.000030517578125

Referenced by jpwl_double_to_pfp().

Function Documentation

unsigned short int jpwl_double_to_pfp	(	double	V,
		int	bytes
	)

conversion between a double precision floating point

number and the corresponding pseudo-floating point used to represent sensitivity values

Parameters

V	the double precision value
bytes	the number of bytes of the representation

Returns: the pseudo-floating point value (cast accordingly)

References MAX_V1, MAX_V2, MIN_V1, and MIN_V2.

Referenced by jpwl_esd_fill().

void jpwl_epb_write	(	opj_j2k_t *	j2k,
		jpwl_epb_ms_t *	epbmark,
		unsigned char *	buf
	)

write an EPB MS to a buffer

Parameters

j2k	J2K compressor handle
epbmark	pointer to the EPB MS
buf	pointer to the memory buffer

References opj_j2k::cstr_info, jpwl_epb_ms::Depb, j2k_add_marker(), J2K_MS_EPB, jpwl_epb_ms::LDPepb, jpwl_epb_ms::Lepb, and jpwl_epb_ms::Pepb.

Referenced by jpwl_dump_marks().

jpwl_epc_ms_t* jpwl_epc_create	(	opj_j2k_t *	j2k,
		opj_bool	esd_on,
		opj_bool	red_on,
		opj_bool	epb_on,
		opj_bool	info_on
	)

create an EPC marker segment

Parameters

j2k	J2K compressor handle
esd_on	true if ESD is activated
red_on	true if RED is activated
epb_on	true if EPB is activated
info_on	true if informative techniques are activated

Returns: returns the freshly created EPC

References opj_j2k::cinfo, opj_j2k::cp, jpwl_epc_ms::DL, jpwl_epc_ms::epb_on, opj_cp::epb_on, jpwl_epc_ms::esd_on, opj_cp::esd_on, EVT_ERROR, jpwl_epc_ms::info_on, opj_cp::info_on, jpwl_epc_ms::Lepc, opj_event_msg(), opj_malloc, jpwl_epc_ms::Pcrc, jpwl_epc_ms::Pepc, jpwl_epc_ms::red_on, and opj_cp::red_on.

Referenced by jpwl_prepare_marks().

void jpwl_epc_write	(	opj_j2k_t *	j2k,
		jpwl_epc_ms_t *	epcmark,
		unsigned char *	buf
	)

write an EPC MS to a buffer

Parameters

j2k	J2K compressor handle
epcmark	pointer to the EPC MS
buf	pointer to the memory buffer

References opj_j2k::cstr_info, jpwl_epc_ms::DL, j2k_add_marker(), J2K_MS_EPC, jpwl_epc_ms::Lepc, jpwl_epc_ms::Pcrc, and jpwl_epc_ms::Pepc.

Referenced by jpwl_dump_marks().

jpwl_esd_ms_t* jpwl_esd_create	(	opj_j2k_t *	j2k,
		int	comps,
		unsigned char	addrm,
		unsigned char	ad_size,
		unsigned char	senst,
		int	se_size,
		int	tileno,
		unsigned long int	svalnum,
		void *	sensval
	)

create an EPC marker segment

Parameters

j2k	J2K compressor handle
comps	considered component (-1=average, 0/1/2/...=component no.)
addrm	addressing mode (0=packet, 1=byte range, 2=packet range, 3=reserved)
ad_size	size of addresses (2/4 bytes)
senst	sensitivity type
se_size	sensitivity values size (1/2 bytes)
tileno	tile where this ESD lies (-1 means MH)
svalnum	number of sensitivity values (if 0, they will be automatically filled)
sensval	pointer to an array of sensitivity values (if NULL, they will be automatically filled)

Returns: returns the freshly created ESD

References jpwl_esd_ms::ad_size, jpwl_esd_ms::addrm, jpwl_esd_ms::Cesd, opj_j2k::cinfo, opj_codestream_info::codestream_size, opj_j2k::cstr_info, jpwl_esd_ms::data, EVT_ERROR, opj_j2k::image, jpwl_esd_ms::Lesd, jpwl_esd_ms::numcomps, opj_image::numcomps, opj_event_msg(), opj_malloc, opj_codestream_info::packno, jpwl_esd_ms::Pesd, jpwl_esd_ms::se_size, jpwl_esd_ms::senst, jpwl_esd_ms::sensval_size, jpwl_esd_ms::svalnum, opj_codestream_info::th, jpwl_esd_ms::tileno, and opj_codestream_info::tw.

Referenced by jpwl_prepare_marks().

void jpwl_esd_write	(	opj_j2k_t *	j2k,
		jpwl_esd_ms_t *	esdmark,
		unsigned char *	buf
	)

write an ESD MS to a buffer

Parameters

j2k	J2K compressor handle
esdmark	pointer to the ESD MS
buf	pointer to the memory buffer

References jpwl_esd_ms::Cesd, opj_j2k::cstr_info, j2k_add_marker(), J2K_MS_ESD, jpwl_esd_ms::Lesd, jpwl_esd_ms::numcomps, and jpwl_esd_ms::Pesd.

Referenced by jpwl_dump_marks().

int jpwl_markcomp	(	const void *	arg1,
		const void *	arg2
	)

this function is used to compare two JPWL markers based on

their relevant wishlist position

Parameters

arg1	pointer to first marker
arg2	pointer to second marker

Returns: 1 if arg1>arg2, 0 if arg1=arg2, -1 if arg1<arg2

Referenced by jpwl_dump_marks().

double jpwl_pfp_to_double	(	unsigned short int	em,
		int	bytes
	)

conversion between a pseudo-floating point used

to represent sensitivity values and the corresponding double precision floating point number

Parameters

em	the pseudo-floating point value (cast accordingly)
bytes	the number of bytes of the representation

Returns: the double precision value

Referenced by jpwl_esd_fill().

Macros

Functions

Macro Definition Documentation

Function Documentation