OpenJPEG  2.3.0
Data Structures | Typedefs
TCD - Implementation of a tile coder/decoder

Data Structures

struct  opj_tcd_pass
 FIXME DOC. More...
 
struct  opj_tcd_layer
 FIXME DOC. More...
 
struct  opj_tcd_cblk_enc
 FIXME DOC. More...
 
struct  opj_tcd_seg_data_chunk
 Chunk of codestream data that is part of a code block. More...
 
struct  opj_tcd_seg
 Segment of a code-block. More...
 
struct  opj_tcd_cblk_dec
 Code-block for decoding. More...
 
struct  opj_tcd_precinct
 Precinct structure. More...
 
struct  opj_tcd_band
 Sub-band structure. More...
 
struct  opj_tcd_resolution
 Tile-component resolution structure. More...
 
struct  opj_tcd_tilecomp
 Tile-component structure. More...
 
struct  opj_tcd_tile
 FIXME DOC. More...
 
struct  opj_tcd_image
 FIXME DOC. More...
 
struct  opj_tcd
 Tile coder/decoder. More...
 

Typedefs

typedef struct opj_tcd_pass opj_tcd_pass_t
 FIXME DOC. More...
 
typedef struct opj_tcd_layer opj_tcd_layer_t
 FIXME DOC. More...
 
typedef struct opj_tcd_cblk_enc opj_tcd_cblk_enc_t
 FIXME DOC. More...
 
typedef struct opj_tcd_seg_data_chunk opj_tcd_seg_data_chunk_t
 Chunk of codestream data that is part of a code block. More...
 
typedef struct opj_tcd_seg opj_tcd_seg_t
 Segment of a code-block. More...
 
typedef struct opj_tcd_cblk_dec opj_tcd_cblk_dec_t
 Code-block for decoding. More...
 
typedef struct opj_tcd_precinct opj_tcd_precinct_t
 Precinct structure. More...
 
typedef struct opj_tcd_band opj_tcd_band_t
 Sub-band structure. More...
 
typedef struct opj_tcd_resolution opj_tcd_resolution_t
 Tile-component resolution structure. More...
 
typedef struct opj_tcd_tilecomp opj_tcd_tilecomp_t
 Tile-component structure. More...
 
typedef struct opj_tcd_tile opj_tcd_tile_t
 FIXME DOC. More...
 
typedef struct opj_tcd_image opj_tcd_image_t
 FIXME DOC. More...
 
typedef struct opj_tcd opj_tcd_t
 Tile coder/decoder. More...
 

Exported functions

opj_tcd_topj_tcd_create (OPJ_BOOL p_is_decoder)
 Dump the content of a tcd structure. More...
 
void opj_tcd_destroy (opj_tcd_t *tcd)
 Destroy a previously created TCD handle. More...
 
OPJ_BOOL opj_tcd_init (opj_tcd_t *p_tcd, opj_image_t *p_image, opj_cp_t *p_cp, opj_thread_pool_t *p_tp)
 Initialize the tile coder and may reuse some memory. More...
 
OPJ_BOOL opj_tcd_init_decode_tile (opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, opj_event_mgr_t *p_manager)
 Allocates memory for decoding a specific tile. More...
 
void opj_tcd_makelayer_fixed (opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_UINT32 final)
 
void opj_tcd_rateallocate_fixed (opj_tcd_t *tcd)
 
void opj_tcd_makelayer (opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_FLOAT64 thresh, OPJ_UINT32 final)
 
OPJ_BOOL opj_tcd_rateallocate (opj_tcd_t *tcd, OPJ_BYTE *dest, OPJ_UINT32 *p_data_written, OPJ_UINT32 len, opj_codestream_info_t *cstr_info, opj_event_mgr_t *p_manager)
 
OPJ_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd, OPJ_BOOL take_into_account_partial_decoding)
 Gets the maximum tile size that will be taken by the tile once decoded. More...
 
OPJ_BOOL opj_tcd_encode_tile (opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, OPJ_BYTE *p_dest, OPJ_UINT32 *p_data_written, OPJ_UINT32 p_len, struct opj_codestream_info *p_cstr_info, opj_event_mgr_t *p_manager)
 Encodes a tile from the raw image into the given buffer. More...
 
OPJ_BOOL opj_tcd_decode_tile (opj_tcd_t *tcd, OPJ_UINT32 win_x0, OPJ_UINT32 win_y0, OPJ_UINT32 win_x1, OPJ_UINT32 win_y1, OPJ_UINT32 numcomps_to_decode, const OPJ_UINT32 *comps_indices, OPJ_BYTE *src, OPJ_UINT32 len, OPJ_UINT32 tileno, opj_codestream_index_t *cstr_info, opj_event_mgr_t *manager)
 Decode a tile from a buffer into a raw image. More...
 
OPJ_BOOL opj_tcd_update_tile_data (opj_tcd_t *p_tcd, OPJ_BYTE *p_dest, OPJ_UINT32 p_dest_length)
 Copies tile data from the system onto the given memory block. More...
 
OPJ_SIZE_T opj_tcd_get_encoded_tile_size (opj_tcd_t *p_tcd)
 
OPJ_BOOL opj_tcd_init_encode_tile (opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, opj_event_mgr_t *p_manager)
 Initialize the tile coder and may reuse some meory. More...
 
OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd, OPJ_BYTE *p_src, OPJ_SIZE_T p_src_length)
 Copies tile data from the given memory block onto the system. More...
 
OPJ_BOOL opj_alloc_tile_component_data (opj_tcd_tilecomp_t *l_tilec)
 Allocates tile component data. More...
 
OPJ_BOOL opj_tcd_is_band_empty (opj_tcd_band_t *band)
 Returns whether a sub-band is empty (i.e. More...
 
void opj_tcd_reinit_segment (opj_tcd_seg_t *seg)
 Reinitialize a segment. More...
 
OPJ_BOOL opj_tcd_is_subband_area_of_interest (opj_tcd_t *tcd, OPJ_UINT32 compno, OPJ_UINT32 resno, OPJ_UINT32 bandno, OPJ_UINT32 x0, OPJ_UINT32 y0, OPJ_UINT32 x1, OPJ_UINT32 y1)
 Returns whether a sub-band region contributes to the area of interest tcd->win_x0,tcd->win_y0,tcd->win_x1,tcd->win_y1. More...
 

Detailed Description

Typedef Documentation

typedef struct opj_tcd_band opj_tcd_band_t

Sub-band structure.

Code-block for decoding.

FIXME DOC.

FIXME DOC.

FIXME DOC.

typedef struct opj_tcd_pass opj_tcd_pass_t

FIXME DOC.

Precinct structure.

Tile-component resolution structure.

Chunk of codestream data that is part of a code block.

typedef struct opj_tcd_seg opj_tcd_seg_t

Segment of a code-block.

A segment represent a number of consecutive coding passes, without termination of MQC or RAW between them.

typedef struct opj_tcd opj_tcd_t

Tile coder/decoder.

typedef struct opj_tcd_tile opj_tcd_tile_t

FIXME DOC.

Tile-component structure.

Function Documentation

OPJ_BOOL opj_alloc_tile_component_data ( opj_tcd_tilecomp_t l_tilec)
OPJ_BOOL opj_tcd_copy_tile_data ( opj_tcd_t p_tcd,
OPJ_BYTE p_src,
OPJ_SIZE_T  p_src_length 
)
opj_tcd_t* opj_tcd_create ( OPJ_BOOL  p_is_decoder)

Dump the content of a tcd structure.

Create a new TCD handle

Parameters
p_is_decoderFIXME DOC
Returns
Returns a new TCD handle if successful returns NULL otherwise

Dump the content of a tcd structure.

References opj_tcd::m_is_decoder, opj_calloc(), opj_free(), and opj_tcd::tcd_image.

Referenced by opj_j2k_copy_default_tcp_and_create_tcd(), and opj_j2k_create_tcd().

OPJ_BOOL opj_tcd_decode_tile ( opj_tcd_t tcd,
OPJ_UINT32  win_x0,
OPJ_UINT32  win_y0,
OPJ_UINT32  win_x1,
OPJ_UINT32  win_y1,
OPJ_UINT32  numcomps_to_decode,
const OPJ_UINT32 comps_indices,
OPJ_BYTE src,
OPJ_UINT32  len,
OPJ_UINT32  tileno,
opj_codestream_index_t cstr_info,
opj_event_mgr_t manager 
)

Decode a tile from a buffer into a raw image.

Parameters
tcdTCD handle
win_x0Upper left x of region to decode (in grid coordinates)
win_y0Upper left y of region to decode (in grid coordinates)
win_x1Lower right x of region to decode (in grid coordinates)
win_y1Lower right y of region to decode (in grid coordinates)
numcomps_to_decodeSize of the comps_indices array, or 0 if decoding all components.
comps_indicesArray of numcomps values representing the indices of the components to decode (relative to the codestream, starting at 0). Or NULL if decoding all components.
srcSource buffer
lenLength of source buffer
tilenoNumber that identifies one of the tiles to be decoded
cstr_infoFIXME DOC
managerthe event manager.

References opj_tcd_tile::comps, opj_image::comps, opj_tcd::cp, opj_tcd_tilecomp::data_size_needed, opj_tcd_tilecomp::data_win, opj_image_comp::dx, opj_image_comp::dy, EVT_ERROR, opj_tcd::image, opj_tcd_tilecomp::minimum_num_resolutions, opj_image::numcomps, opj_tcd_tilecomp::numresolutions, opj_alloc_tile_component_data(), opj_calloc(), opj_event_msg(), OPJ_FALSE, opj_free(), opj_image_data_alloc(), opj_image_data_free(), opj_malloc(), opj_tcd_dc_level_shift_decode(), opj_tcd_dwt_decode(), opj_tcd_is_whole_tilecomp_decoding(), opj_tcd_mct_decode(), opj_tcd_t1_decode(), opj_tcd_t2_decode(), OPJ_TRUE, opj_uint_ceildiv(), opj_uint_ceildivpow2(), opj_uint_max(), opj_uint_min(), opj_tcd_resolution::ph, opj_tccp::prch, opj_tccp::prcw, opj_tcd_resolution::pw, opj_image_comp::resno_decoded, opj_tcd_tilecomp::resolutions, SIZE_MAX, opj_tcp::tccps, opj_tcd::tcd_image, opj_tcd::tcd_tileno, tcp, opj_tcd::tcp, opj_cp::tcps, opj_tcd_image::tiles, opj_tcd::used_component, opj_tcd::whole_tile_decoding, opj_tcd_resolution::win_x0, opj_tcd_tilecomp::win_x0, opj_tcd::win_x0, opj_tcd_resolution::win_x1, opj_tcd_tilecomp::win_x1, opj_tcd::win_x1, opj_tcd_resolution::win_y0, opj_tcd_tilecomp::win_y0, opj_tcd::win_y0, opj_tcd_resolution::win_y1, opj_tcd_tilecomp::win_y1, opj_tcd::win_y1, opj_tcd_resolution::x0, opj_tcd_tilecomp::x0, opj_tcd_resolution::x1, opj_tcd_tilecomp::x1, opj_tcd_resolution::y0, opj_tcd_tilecomp::y0, opj_tcd_resolution::y1, and opj_tcd_tilecomp::y1.

Referenced by opj_j2k_decode_tile().

void opj_tcd_destroy ( opj_tcd_t tcd)

Destroy a previously created TCD handle.

Parameters
tcdTCD handle to destroy

References opj_free(), opj_tcd_free_tile(), opj_tcd::tcd_image, and opj_tcd::used_component.

Referenced by opj_j2k_copy_default_tcp_and_create_tcd(), opj_j2k_create_tcd(), opj_j2k_destroy(), and opj_j2k_end_encoding().

OPJ_BOOL opj_tcd_encode_tile ( opj_tcd_t p_tcd,
OPJ_UINT32  p_tile_no,
OPJ_BYTE p_dest,
OPJ_UINT32 p_data_written,
OPJ_UINT32  p_len,
struct opj_codestream_info p_cstr_info,
opj_event_mgr_t p_manager 
)

Encodes a tile from the raw image into the given buffer.

Parameters
p_tcdTile Coder handle
p_tile_noIndex of the tile to encode.
p_destDestination buffer
p_data_writtenpointer to an int that is incremented by the number of bytes really written on p_dest
p_lenMaximum length of the destination buffer
p_cstr_infoCodestream information structure
p_managerthe user event manager
Returns
true if the coding is successful.

References opj_tcd_tile::comps, opj_tcd::cp, opj_tcd::cur_tp_num, opj_codestream_info::index_write, opj_codestream_info::numcomps, opj_codestream_info::numlayers, opj_tcd_tilecomp::numresolutions, opj_calloc(), OPJ_FALSE, opj_tcd_dc_level_shift_encode(), opj_tcd_dwt_encode(), opj_tcd_mct_encode(), opj_tcd_rate_allocate_encode(), opj_tcd_t1_encode(), opj_tcd_t2_encode(), OPJ_TRUE, opj_tile_info::packet, opj_tile_info::pdx, opj_tile_info::pdy, opj_tcd_resolution::ph, opj_tile_info::ph, opj_tccp::prch, opj_tccp::prcw, opj_tcd_resolution::pw, opj_tile_info::pw, opj_tcd_tilecomp::resolutions, opj_tcp::tccps, opj_tcd::tcd_image, opj_tcd::tcd_tileno, opj_tcd::tcp, opj_cp::tcps, opj_codestream_info::tile, and opj_tcd_image::tiles.

Referenced by opj_j2k_write_sod().

OPJ_UINT32 opj_tcd_get_decoded_tile_size ( opj_tcd_t p_tcd,
OPJ_BOOL  take_into_account_partial_decoding 
)
OPJ_SIZE_T opj_tcd_get_encoded_tile_size ( opj_tcd_t p_tcd)
OPJ_BOOL opj_tcd_init ( opj_tcd_t p_tcd,
opj_image_t p_image,
opj_cp_t p_cp,
opj_thread_pool_t p_tp 
)

Initialize the tile coder and may reuse some memory.

Parameters
p_tcdTCD handle.
p_imageraw image.
p_cpcoding parameters.
p_tpthread pool
Returns
true if the encoding values could be set (false otherwise).

References opj_tcd_tile::comps, opj_tcd::cp, opj_tcd::image, opj_cp::m_enc, opj_cp::m_specific_param, opj_encoding_param::m_tp_pos, opj_tcd_tile::numcomps, opj_image::numcomps, opj_calloc(), OPJ_FALSE, OPJ_TRUE, opj_tcd::tcd_image, opj_tcd::thread_pool, opj_tcd_image::tiles, and opj_tcd::tp_pos.

Referenced by opj_j2k_copy_default_tcp_and_create_tcd(), and opj_j2k_create_tcd().

OPJ_BOOL opj_tcd_init_decode_tile ( opj_tcd_t p_tcd,
OPJ_UINT32  p_tile_no,
opj_event_mgr_t p_manager 
)

Allocates memory for decoding a specific tile.

Parameters
p_tcdthe tile decoder.
p_tile_nothe index of the tile received in sequence. This not necessarily lead to the tile at index p_tile_no.
p_managerthe event manager.
Returns
true if the remaining data is sufficient.

References OPJ_FALSE, and opj_tcd_init_tile().

Referenced by opj_j2k_read_tile_header().

OPJ_BOOL opj_tcd_init_encode_tile ( opj_tcd_t p_tcd,
OPJ_UINT32  p_tile_no,
opj_event_mgr_t p_manager 
)

Initialize the tile coder and may reuse some meory.

Parameters
p_tcdTCD handle.
p_tile_nocurrent tile index to encode.
p_managerthe event manager.
Returns
true if the encoding values could be set (false otherwise).

References opj_tcd_init_tile(), and OPJ_TRUE.

Referenced by opj_j2k_pre_write_tile().

OPJ_BOOL opj_tcd_is_band_empty ( opj_tcd_band_t band)

Returns whether a sub-band is empty (i.e.

whether it has a null area)

Parameters
bandSub-band handle.
Returns
OPJ_TRUE whether the sub-band is empty.

References opj_tcd_band::x0, opj_tcd_band::x1, opj_tcd_band::y0, and opj_tcd_band::y1.

Referenced by opj_t1_encode_cblks(), opj_t2_encode_packet(), opj_t2_read_packet_header(), opj_tcd_init_tile(), opj_tcd_makelayer(), opj_tcd_makelayer_fixed(), and opj_tcd_rateallocate().

OPJ_BOOL opj_tcd_is_subband_area_of_interest ( opj_tcd_t tcd,
OPJ_UINT32  compno,
OPJ_UINT32  resno,
OPJ_UINT32  bandno,
OPJ_UINT32  x0,
OPJ_UINT32  y0,
OPJ_UINT32  x1,
OPJ_UINT32  y1 
)

Returns whether a sub-band region contributes to the area of interest tcd->win_x0,tcd->win_y0,tcd->win_x1,tcd->win_y1.

Parameters
tcdTCD handle.
compnoComponent number
resnoResolution number
bandnoBand number (not band index, ie 0, 1, 2 or 3)
x0Upper left x in subband coordinates
y0Upper left y in subband coordinates
x1Lower right x in subband coordinates
y1Lower right y in subband coordinates
Returns
OPJ_TRUE whether the sub-band region contributs to the area of interest.

References opj_tcd_tile::comps, opj_image::comps, opj_image_comp::dx, opj_image_comp::dy, opj_tcd::image, opj_tcd_tilecomp::numresolutions, opj_uint_adds(), opj_uint_ceildiv(), opj_uint_ceildivpow2(), opj_uint_max(), opj_uint_min(), opj_tccp::qmfbid, opj_tcp::tccps, opj_tcd::tcd_image, opj_tcd::tcp, opj_tcd_image::tiles, opj_tcd::win_x0, opj_tcd::win_x1, opj_tcd::win_y0, opj_tcd::win_y1, opj_tcd_tilecomp::x0, opj_tcd_tilecomp::x1, opj_tcd_tilecomp::y0, and opj_tcd_tilecomp::y1.

Referenced by opj_t1_decode_cblks(), and opj_t2_decode_packets().

void opj_tcd_makelayer ( opj_tcd_t tcd,
OPJ_UINT32  layno,
OPJ_FLOAT64  thresh,
OPJ_UINT32  final 
)
void opj_tcd_makelayer_fixed ( opj_tcd_t tcd,
OPJ_UINT32  layno,
OPJ_UINT32  final 
)
OPJ_BOOL opj_tcd_rateallocate ( opj_tcd_t tcd,
OPJ_BYTE dest,
OPJ_UINT32 p_data_written,
OPJ_UINT32  len,
opj_codestream_info_t cstr_info,
opj_event_mgr_t p_manager 
)
void opj_tcd_rateallocate_fixed ( opj_tcd_t tcd)
void opj_tcd_reinit_segment ( opj_tcd_seg_t seg)

Reinitialize a segment.

Referenced by opj_t2_init_seg(), and opj_tcd_code_block_dec_allocate().

OPJ_BOOL opj_tcd_update_tile_data ( opj_tcd_t p_tcd,
OPJ_BYTE p_dest,
OPJ_UINT32  p_dest_length 
)