TCD - Implementation of a tile coder/decoder


Data Structures

struct  opj_tcd_seg
 FIXME DOC. More...
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_cblk_dec
struct  opj_tcd_precinct
 FIXME DOC. More...
struct  opj_tcd_band
 FIXME DOC. More...
struct  opj_tcd_resolution
 FIXME DOC. More...
struct  opj_tcd_tilecomp
 FIXME DOC. More...
struct  opj_tcd_tile
 FIXME DOC. More...
struct  opj_tcd_image
 FIXME DOC. More...
struct  opj_tcd
 Tile coder/decoder. More...

Exported functions

opj_tcd_topj_tcd_create (OPJ_BOOL p_is_decoder)
 Dump the content of a tcd structure.
void opj_tcd_destroy (opj_tcd_t *tcd)
 Destroy a previously created TCD handle.
OPJ_BOOL opj_tcd_init (opj_tcd_t *p_tcd, opj_image_t *p_image, opj_cp_t *p_cp)
 Initialize the tile coder and may reuse some memory.
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.
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_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd)
 Gets the maximum tile size that will be taken by the tile once decoded.
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)
 Encodes a tile from the raw image into the given buffer.
OPJ_BOOL opj_tcd_decode_tile (opj_tcd_t *tcd, 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.
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.
OPJ_UINT32 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.
OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd, OPJ_BYTE *p_src, OPJ_UINT32 p_src_length)
 Copies tile data from the given memory block onto the system.
OPJ_BOOL opj_alloc_tile_component_data (opj_tcd_tilecomp_t *l_tilec)
 Allocates tile component data.

Typedefs

typedef struct opj_tcd_seg opj_tcd_seg_t
 FIXME DOC.
typedef struct opj_tcd_pass opj_tcd_pass_t
 FIXME DOC.
typedef struct opj_tcd_layer opj_tcd_layer_t
 FIXME DOC.
typedef struct opj_tcd_cblk_enc opj_tcd_cblk_enc_t
 FIXME DOC.
typedef struct opj_tcd_cblk_dec opj_tcd_cblk_dec_t
typedef struct opj_tcd_precinct opj_tcd_precinct_t
 FIXME DOC.
typedef struct opj_tcd_band opj_tcd_band_t
 FIXME DOC.
typedef struct opj_tcd_resolution opj_tcd_resolution_t
 FIXME DOC.
typedef struct opj_tcd_tilecomp opj_tcd_tilecomp_t
 FIXME DOC.
typedef struct opj_tcd_tile opj_tcd_tile_t
 FIXME DOC.
typedef struct opj_tcd_image opj_tcd_image_t
 FIXME DOC.
typedef struct opj_tcd opj_tcd_t
 Tile coder/decoder.

Typedef Documentation

typedef struct opj_tcd_band opj_tcd_band_t

FIXME DOC.

FIXME DOC.

FIXME DOC.

FIXME DOC.

typedef struct opj_tcd_pass opj_tcd_pass_t

FIXME DOC.

FIXME DOC.

FIXME DOC.

typedef struct opj_tcd_seg opj_tcd_seg_t

FIXME DOC.

typedef struct opj_tcd opj_tcd_t

Tile coder/decoder.

typedef struct opj_tcd_tile opj_tcd_tile_t

FIXME DOC.

FIXME DOC.


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_UINT32  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_decoder FIXME DOC
Returns:
Returns a new TCD handle if successful returns NULL otherwise

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_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:
tcd TCD handle
src Source buffer
len Length of source buffer
tileno Number that identifies one of the tiles to be decoded
cstr_info FIXME DOC
manager the event manager.

References opj_tcd_tile::comps, opj_tcd::cp, opj_tcd_tilecomp::numresolutions, OPJ_FALSE, opj_malloc(), opj_tcd_dc_level_shift_decode(), opj_tcd_dwt_decode(), opj_tcd_mct_decode(), opj_tcd_t1_decode(), opj_tcd_t2_decode(), OPJ_TRUE, opj_tcd_resolution::ph, opj_tccp::prch, opj_tccp::prcw, opj_tcd_resolution::pw, opj_tcd_tilecomp::resolutions, opj_tcp::tccps, opj_tcd::tcd_image, opj_tcd::tcd_tileno, tcp, opj_tcd::tcp, opj_cp::tcps, and opj_tcd_image::tiles.

Referenced by opj_j2k_decode_tile().

void opj_tcd_destroy ( opj_tcd_t tcd  ) 

Destroy a previously created TCD handle.

Parameters:
tcd TCD handle to destroy

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

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 
)

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

Parameters:
p_tcd Tile Coder handle
p_tile_no Index of the tile to encode.
p_dest Destination buffer
p_data_written pointer to an int that is incremented by the number of bytes really written on p_dest
p_len Maximum length of the destination buffer
p_cstr_info Codestream information structure
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_UINT32 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 
)

Initialize the tile coder and may reuse some memory.

Parameters:
p_tcd TCD handle.
p_image raw image.
p_cp coding parameters.
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_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_tcd the tile decoder.
p_tile_no the index of the tile received in sequence. This not necessarily lead to the tile at index p_tile_no.
p_manager the 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_tcd TCD handle.
p_tile_no current tile index to encode.
p_manager the 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().

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 
)

void opj_tcd_rateallocate_fixed ( opj_tcd_t tcd  ) 

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


Generated on Mon Dec 19 11:42:54 2016 for OpenJPEG by  doxygen 1.5.6