2 * The copyright in this software is being made available under the 2-clauses
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7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8 * Copyright (c) 2002-2014, Professor Benoit Macq
9 * Copyright (c) 2001-2003, David Janssens
10 * Copyright (c) 2002-2003, Yannick Verschueren
11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
12 * Copyright (c) 2003-2014, Antonin Descampe
13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
14 * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
15 * Copyright (c) 2012, CS Systemes d'Information, France
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43 @brief Implementation of a tile coder/decoder (TCD)
45 The functions in TCD.C encode or decode each tile independently from
46 each other. The functions in TCD.C are used by other functions in J2K.C.
49 /** @defgroup TCD TCD - Implementation of a tile coder/decoder */
55 typedef struct opj_tcd_seg {
59 OPJ_UINT32 real_num_passes;
62 OPJ_UINT32 numnewpasses;
69 typedef struct opj_tcd_pass {
71 OPJ_FLOAT64 distortiondec;
73 OPJ_BITFIELD term : 1;
79 typedef struct opj_tcd_layer {
80 OPJ_UINT32 numpasses; /* Number of passes in the layer */
81 OPJ_UINT32 len; /* len of information */
82 OPJ_FLOAT64 disto; /* add for index (Cfr. Marcela) */
83 OPJ_BYTE *data; /* data */
89 typedef struct opj_tcd_cblk_enc {
90 OPJ_BYTE* data; /* Data */
91 opj_tcd_layer_t* layers; /* layer information */
92 opj_tcd_pass_t* passes; /* information about the passes */
93 OPJ_INT32 x0, y0, x1, y1; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
95 OPJ_UINT32 numlenbits;
96 OPJ_UINT32 data_size; /* Size of allocated data buffer */
97 OPJ_UINT32 numpasses; /* number of pass already done for the code-blocks */
98 OPJ_UINT32 numpassesinlayers; /* number of passes in the layer */
99 OPJ_UINT32 totalpasses; /* total number of passes */
100 } opj_tcd_cblk_enc_t;
103 typedef struct opj_tcd_cblk_dec {
104 OPJ_BYTE * data; /* Data */
105 opj_tcd_seg_t* segs; /* segments information */
106 OPJ_INT32 x0, y0, x1, y1; /* position of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
108 OPJ_UINT32 numlenbits;
109 OPJ_UINT32 data_max_size; /* Size of allocated data buffer */
110 OPJ_UINT32 data_current_size; /* Size of used data buffer */
111 OPJ_UINT32 numnewpasses; /* number of pass added to the code-blocks */
112 OPJ_UINT32 numsegs; /* number of segments */
113 OPJ_UINT32 real_num_segs;
114 OPJ_UINT32 m_current_max_segs;
115 } opj_tcd_cblk_dec_t;
120 typedef struct opj_tcd_precinct {
121 OPJ_INT32 x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
122 OPJ_UINT32 cw, ch; /* number of precinct in width and height */
123 union{ /* code-blocks information */
124 opj_tcd_cblk_enc_t* enc;
125 opj_tcd_cblk_dec_t* dec;
128 OPJ_UINT32 block_size; /* size taken by cblks (in bytes) */
129 opj_tgt_tree_t *incltree; /* inclusion tree */
130 opj_tgt_tree_t *imsbtree; /* IMSB tree */
131 } opj_tcd_precinct_t;
136 typedef struct opj_tcd_band {
137 OPJ_INT32 x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
139 opj_tcd_precinct_t *precincts; /* precinct information */
140 OPJ_UINT32 precincts_data_size; /* size of data taken by precincts */
142 OPJ_FLOAT32 stepsize;
148 typedef struct opj_tcd_resolution {
149 OPJ_INT32 x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
151 OPJ_UINT32 numbands; /* number sub-band for the resolution level */
152 opj_tcd_band_t bands[3]; /* subband information */
153 } opj_tcd_resolution_t;
158 typedef struct opj_tcd_tilecomp
160 OPJ_INT32 x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
161 OPJ_UINT32 numresolutions; /* number of resolutions level */
162 OPJ_UINT32 minimum_num_resolutions; /* number of resolutions level to decode (at max)*/
163 opj_tcd_resolution_t *resolutions; /* resolutions information */
164 OPJ_UINT32 resolutions_size; /* size of data for resolutions (in bytes) */
165 OPJ_INT32 *data; /* data of the component */
166 OPJ_BOOL ownsData; /* if true, then need to free after usage, otherwise do not free */
167 OPJ_UINT32 data_size_needed; /* we may either need to allocate this amount of data, or re-use image data and ignore this value */
168 OPJ_UINT32 data_size; /* size of the data of the component */
169 OPJ_INT32 numpix; /* add fixed_quality */
170 } opj_tcd_tilecomp_t;
176 typedef struct opj_tcd_tile {
177 OPJ_INT32 x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
178 OPJ_UINT32 numcomps; /* number of components in tile */
179 opj_tcd_tilecomp_t *comps; /* Components information */
180 OPJ_INT32 numpix; /* add fixed_quality */
181 OPJ_FLOAT64 distotile; /* add fixed_quality */
182 OPJ_FLOAT64 distolayer[100]; /* add fixed_quality */
183 OPJ_UINT32 packno; /* packet number */
189 typedef struct opj_tcd_image
191 opj_tcd_tile_t *tiles; /* Tiles information */
199 typedef struct opj_tcd
201 /** Position of the tilepart flag in Progression order*/
203 /** Tile part number*/
205 /** Current tile part number*/
206 OPJ_UINT32 cur_tp_num;
207 /** Total number of tileparts of the current tile*/
208 OPJ_UINT32 cur_totnum_tp;
209 /** Current Packet iterator number */
211 /** info on each image tile */
212 opj_tcd_image_t *tcd_image;
215 /** coding parameters */
217 /** coding/decoding parameters common to all tiles */
219 /** current encoded/decoded tile */
220 OPJ_UINT32 tcd_tileno;
221 /** tell if the tcd is a decoder. */
222 OPJ_BITFIELD m_is_decoder : 1;
225 /** @name Exported functions */
227 /* ----------------------------------------------------------------------- */
230 Dump the content of a tcd structure
232 /*void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);*/ /* TODO MSD shoul use the new v2 structures */
235 Create a new TCD handle
236 @param p_is_decoder FIXME DOC
237 @return Returns a new TCD handle if successful returns NULL otherwise
239 opj_tcd_t* opj_tcd_create(OPJ_BOOL p_is_decoder);
242 Destroy a previously created TCD handle
243 @param tcd TCD handle to destroy
245 void opj_tcd_destroy(opj_tcd_t *tcd);
248 * Initialize the tile coder and may reuse some memory.
249 * @param p_tcd TCD handle.
250 * @param p_image raw image.
251 * @param p_cp coding parameters.
253 * @return true if the encoding values could be set (false otherwise).
255 OPJ_BOOL opj_tcd_init( opj_tcd_t *p_tcd,
256 opj_image_t * p_image,
260 * Allocates memory for decoding a specific tile.
262 * @param p_tcd the tile decoder.
263 * @param p_tile_no the index of the tile received in sequence. This not necessarily lead to the
264 * tile at index p_tile_no.
265 * @param p_manager the event manager.
267 * @return true if the remaining data is sufficient.
269 OPJ_BOOL opj_tcd_init_decode_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, opj_event_mgr_t* p_manager);
271 void opj_tcd_makelayer_fixed(opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_UINT32 final);
273 void opj_tcd_rateallocate_fixed(opj_tcd_t *tcd);
275 void opj_tcd_makelayer( opj_tcd_t *tcd,
280 OPJ_BOOL opj_tcd_rateallocate( opj_tcd_t *tcd,
282 OPJ_UINT32 * p_data_written,
284 opj_codestream_info_t *cstr_info);
287 * Gets the maximum tile size that will be taken by the tile once decoded.
289 OPJ_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd );
292 * Encodes a tile from the raw image into the given buffer.
293 * @param p_tcd Tile Coder handle
294 * @param p_tile_no Index of the tile to encode.
295 * @param p_dest Destination buffer
296 * @param p_data_written pointer to an int that is incremented by the number of bytes really written on p_dest
297 * @param p_len Maximum length of the destination buffer
298 * @param p_cstr_info Codestream information structure
299 * @return true if the coding is successful.
301 OPJ_BOOL opj_tcd_encode_tile( opj_tcd_t *p_tcd,
302 OPJ_UINT32 p_tile_no,
304 OPJ_UINT32 * p_data_written,
306 struct opj_codestream_info *p_cstr_info);
310 Decode a tile from a buffer into a raw image
311 @param tcd TCD handle
312 @param src Source buffer
313 @param len Length of source buffer
314 @param tileno Number that identifies one of the tiles to be decoded
315 @param cstr_info FIXME DOC
316 @param manager the event manager.
318 OPJ_BOOL opj_tcd_decode_tile( opj_tcd_t *tcd,
322 opj_codestream_index_t *cstr_info,
323 opj_event_mgr_t *manager);
327 * Copies tile data from the system onto the given memory block.
329 OPJ_BOOL opj_tcd_update_tile_data ( opj_tcd_t *p_tcd,
331 OPJ_UINT32 p_dest_length );
336 OPJ_UINT32 opj_tcd_get_encoded_tile_size ( opj_tcd_t *p_tcd );
339 * Initialize the tile coder and may reuse some meory.
341 * @param p_tcd TCD handle.
342 * @param p_tile_no current tile index to encode.
343 * @param p_manager the event manager.
345 * @return true if the encoding values could be set (false otherwise).
347 OPJ_BOOL opj_tcd_init_encode_tile ( opj_tcd_t *p_tcd,
348 OPJ_UINT32 p_tile_no, opj_event_mgr_t* p_manager );
351 * Copies tile data from the given memory block onto the system.
353 OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd,
355 OPJ_UINT32 p_src_length );
358 * Allocates tile component data
362 OPJ_BOOL opj_alloc_tile_component_data(opj_tcd_tilecomp_t *l_tilec);
364 /* ----------------------------------------------------------------------- */