j2kheader_manager.h File Reference

#include "byte_manager.h"
#include "index_manager.h"

Go to the source code of this file.

Functions
OPJ_BOOL	get_mainheader_from_j2kstream (Byte_t *j2kstream, SIZmarker_param_t *SIZ, CODmarker_param_t *COD)
	get main header information from j2k codestream More...
OPJ_BOOL	modify_mainheader (Byte_t *j2kstream, int numOfdecomp, SIZmarker_param_t SIZ, CODmarker_param_t COD, Byte8_t *j2klen)
	modify main header in j2k codestream to fit with the new number of decompositions More...
OPJ_BOOL	modify_tileheader (Byte_t *j2kstream, Byte8_t SOToffset, int numOfdecomp, Byte2_t Csiz, Byte8_t *j2klen)
	modify tile header in j2k codestream to fit with the tile part length, and new number of decompositions for multi-componet images More...

Function Documentation

get_mainheader_from_j2kstream()

OPJ_BOOL get_mainheader_from_j2kstream	(	Byte_t *	j2kstream,
		SIZmarker_param_t *	SIZ,
		CODmarker_param_t *	COD
	)

get main header information from j2k codestream

Parameters

[in]	j2kstream	j2k codestream
[out]	SIZ	SIZ marker pointer
[out]	COD	COD marker pointer

Returns

if succeeded (true) or failed (false)

References big2(), FCGI_stderr, get_CODmkrdata_from_j2kstream(), get_SIZmkrdata_from_j2kstream(), CODmarker_param::Lcod, SIZmarker_param::Lsiz, OPJ_FALSE, and OPJ_TRUE.

Referenced by get_SIZ_from_jpipstream(), recons_codestream_from_JPPstream(), and recons_codestream_from_JPTstream().

modify_mainheader()

OPJ_BOOL modify_mainheader	(	Byte_t *	j2kstream,
		int	numOfdecomp,
		SIZmarker_param_t	SIZ,
		CODmarker_param_t	COD,
		Byte8_t *	j2klen
	)

modify main header in j2k codestream to fit with the new number of decompositions

Parameters

[in]	j2kstream	j2k codestream
[in]	numOfdecomp	the New number of decompositions
[in]	SIZ	original SIZ marker information
[in]	COD	original COD marker information
[out]	j2klen	pointer to the length of j2k code stream

Returns

if succeeded (true) or failed (false)

References FCGI_stderr, CODmarker_param::Lcod, SIZmarker_param::Lsiz, modify_CODmkrstream(), modify_SIZmkrstream(), CODmarker_param::numOfdecomp, OPJ_FALSE, and OPJ_TRUE.

Referenced by recons_codestream_from_JPPstream().

modify_tileheader()

OPJ_BOOL modify_tileheader	(	Byte_t *	j2kstream,
		Byte8_t	SOToffset,
		int	numOfdecomp,
		Byte2_t	Csiz,
		Byte8_t *	j2klen
	)

modify tile header in j2k codestream to fit with the tile part length, and new number of decompositions for multi-componet images

Parameters

[in]	j2kstream	j2k codestream
[in]	SOToffset	offset of SOT marker from the beginning of j2kstream
[in]	numOfdecomp	the New number of decompositions, -1 if the same as original
[in]	Csiz	number of components
[out]	j2klen	pointer to the length of j2k code stream

Returns

if succeeded (true) or failed (false)

References FCGI_stderr, modify_4Bytecode(), modify_COCmkrstream(), OPJ_FALSE, and OPJ_TRUE.

Referenced by recons_codestream_from_JPPstream().