t2.h File Reference

Implementation of a tier-2 coding (packetization of code-block data) (T2) More...

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Data Structures
struct	opj_t2
	Tier-2 coding. More...

Typedefs
typedef struct opj_t2	opj_t2_t
	Tier-2 coding. More...

Functions
Exported functions
OPJ_BOOL	opj_t2_encode_packets (opj_t2_t *t2, OPJ_UINT32 tileno, opj_tcd_tile_t *tile, OPJ_UINT32 maxlayers, OPJ_BYTE *dest, OPJ_UINT32 *p_data_written, OPJ_UINT32 len, opj_codestream_info_t *cstr_info, opj_tcd_marker_info_t *p_marker_info, OPJ_UINT32 tpnum, OPJ_INT32 tppos, OPJ_UINT32 pino, J2K_T2_MODE t2_mode, opj_event_mgr_t *p_manager)
	Encode the packets of a tile to a destination buffer. More...
OPJ_BOOL	opj_t2_decode_packets (opj_tcd_t *tcd, opj_t2_t *t2, OPJ_UINT32 tileno, opj_tcd_tile_t *tile, OPJ_BYTE *src, OPJ_UINT32 *p_data_read, OPJ_UINT32 len, opj_codestream_index_t *cstr_info, opj_event_mgr_t *p_manager)
	Decode the packets of a tile from a source buffer. More...
opj_t2_t *	opj_t2_create (opj_image_t *p_image, opj_cp_t *p_cp)
	Creates a Tier 2 handle. More...
void	opj_t2_destroy (opj_t2_t *t2)
	Destroy a T2 handle. More...

Detailed Description

Implementation of a tier-2 coding (packetization of code-block data) (T2)

Typedef Documentation

opj_t2_t

typedef struct opj_t2 opj_t2_t

Tier-2 coding.

Function Documentation

opj_t2_create()

opj_t2_t* opj_t2_create	(	opj_image_t *	p_image,
		opj_cp_t *	p_cp
	)

Creates a Tier 2 handle.

Parameters

p_image	Source or destination image
p_cp	Image coding parameters.

Returns

a new T2 handle if successful, NULL otherwise.

References opj_t2::cp, opj_t2::image, and opj_calloc().

Referenced by opj_tcd_rateallocate(), opj_tcd_t2_decode(), and opj_tcd_t2_encode().

opj_t2_decode_packets()

OPJ_BOOL opj_t2_decode_packets	(	opj_tcd_t *	tcd,
		opj_t2_t *	t2,
		OPJ_UINT32	tileno,
		opj_tcd_tile_t *	tile,
		OPJ_BYTE *	src,
		OPJ_UINT32 *	p_data_read,
		OPJ_UINT32	len,
		opj_codestream_index_t *	cstr_info,
		opj_event_mgr_t *	p_manager
	)

Decode the packets of a tile from a source buffer.

Parameters

tcd	TCD handle
t2	T2 handle
tileno	number that identifies the tile for which to decode the packets
tile	tile for which to decode the packets
src	FIXME DOC
p_data_read	the source buffer
len	length of the source buffer
cstr_info	FIXME DOC
p_manager	the user event manager

Returns

FIXME DOC

References opj_tcd_band::bandno, opj_tcd_resolution::bands, opj_pi_iterator::compno, opj_tcd_tile::comps, opj_image::comps, opj_t2::cp, opj_packet_info::end_ph_pos, opj_packet_info::end_pos, opj_t2::image, JAS_FPRINTF, opj_pi_iterator::layno, opj_cp::m_enc, opj_cp::m_specific_param, opj_encoding_param::m_tp_on, opj_tcd_tilecomp::minimum_num_resolutions, opj_tcp::num_layers_to_decode, opj_tcd_resolution::numbands, opj_image::numcomps, opj_tcp::numpocs, OPJ_ARG_NOT_USED, OPJ_FALSE, opj_free(), opj_malloc(), opj_pi_create_decode(), opj_pi_destroy(), opj_pi_next(), OPJ_PROG_UNKNOWN, opj_t2_decode_packet(), opj_t2_skip_packet(), opj_tcd_is_subband_area_of_interest(), OPJ_TRUE, opj_uint_max(), opj_pi_iterator::poc, opj_tcd_band::precincts, opj_pi_iterator::precno, opj_poc::prg, opj_poc::prg1, opj_pi_iterator::resno, opj_image_comp::resno_decoded, opj_tcd_tilecomp::resolutions, opj_packet_info::start_pos, opj_cp::tcps, opj_codestream_index::tile_index, opj_tcd_precinct::x0, opj_tcd_precinct::x1, opj_tcd_precinct::y0, and opj_tcd_precinct::y1.

Referenced by opj_tcd_t2_decode().

opj_t2_destroy()

void opj_t2_destroy

(

opj_t2_t *

t2

)

Destroy a T2 handle.

Parameters

t2	T2 handle to destroy

References opj_free().

Referenced by opj_tcd_rateallocate(), opj_tcd_t2_decode(), and opj_tcd_t2_encode().

opj_t2_encode_packets()

OPJ_BOOL opj_t2_encode_packets	(	opj_t2_t *	t2,
		OPJ_UINT32	tileno,
		opj_tcd_tile_t *	tile,
		OPJ_UINT32	maxlayers,
		OPJ_BYTE *	dest,
		OPJ_UINT32 *	p_data_written,
		OPJ_UINT32	len,
		opj_codestream_info_t *	cstr_info,
		opj_tcd_marker_info_t *	p_marker_info,
		OPJ_UINT32	tpnum,
		OPJ_INT32	tppos,
		OPJ_UINT32	pino,
		J2K_T2_MODE	t2_mode,
		opj_event_mgr_t *	p_manager
	)

Encode the packets of a tile to a destination buffer.

Parameters

t2	T2 handle
tileno	number of the tile encoded
tile	the tile for which to write the packets
maxlayers	maximum number of layers
dest	the destination buffer
p_data_written	FIXME DOC
len	the length of the destination buffer
cstr_info	Codestream information structure
p_marker_info	Marker information structure
tpnum	Tile part number of the current tile
tppos	The position of the tile part flag in the progression order
pino	FIXME DOC
t2_mode	If == THRESH_CALC In Threshold calculation ,If == FINAL_PASS Final pass
p_manager	the user event manager

References opj_t2::cp, opj_tile_info::end_header, opj_packet_info::end_ph_pos, opj_packet_info::end_pos, opj_t2::image, opj_codestream_info::index_write, opj_pi_iterator::layno, opj_cp::m_enc, opj_encoding_param::m_max_comp_size, opj_cp::m_specific_param, opj_encoding_param::m_tp_on, opj_tcd_marker_info::need_PLT, opj_image::numcomps, opj_tcp::numpocs, OPJ_FALSE, opj_get_encoding_packet_count(), opj_malloc(), opj_pi_create_encode(), opj_pi_destroy(), opj_pi_initialise_encode(), opj_pi_next(), OPJ_PROFILE_CINEMA_4K, OPJ_PROG_UNKNOWN, opj_t2_encode_packet(), OPJ_TRUE, opj_tcd_marker_info::p_packet_size, opj_tile_info::packet, opj_tcd_marker_info::packet_count, opj_tcd_tile::packno, opj_codestream_info::packno, opj_pi_iterator::poc, opj_tcp::POC, opj_poc::prg, opj_cp::rsiz, opj_packet_info::start_pos, opj_cp::tcps, THRESH_CALC, and opj_codestream_info::tile.

Referenced by opj_tcd_rateallocate(), and opj_tcd_t2_encode().