2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * Copyright (c) 2008;2011-2012, Centre National d'Etudes Spatiales (CNES), France
9 * Copyright (c) 2012, CS Systemes d'Information, France
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13 * modification, are permitted provided that the following conditions
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37 @brief Implementation of a tile coder/decoder (TCD)
39 The functions in TCD.C encode or decode each tile independently from
40 each other. The functions in TCD.C are used by other functions in J2K.C.
43 /** @defgroup TCD TCD - Implementation of a tile coder/decoder */
49 typedef struct opj_tcd_seg {
53 OPJ_UINT32 real_num_passes;
56 OPJ_UINT32 numnewpasses;
63 typedef struct opj_tcd_pass {
65 OPJ_FLOAT64 distortiondec;
73 typedef struct opj_tcd_layer {
74 OPJ_UINT32 numpasses; /* Number of passes in the layer */
75 OPJ_UINT32 len; /* len of information */
76 OPJ_FLOAT64 disto; /* add for index (Cfr. Marcela) */
77 OPJ_BYTE *data; /* data */
83 typedef struct opj_tcd_cblk_enc {
84 OPJ_BYTE* data; /* Data */
85 opj_tcd_layer_t* layers; /* layer information */
86 opj_tcd_pass_t* passes; /* information about the passes */
87 OPJ_INT32 x0, y0, x1, y1; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
89 OPJ_UINT32 numlenbits;
90 OPJ_UINT32 numpasses; /* number of pass already done for the code-blocks */
91 OPJ_UINT32 numpassesinlayers; /* number of passes in the layer */
92 OPJ_UINT32 totalpasses; /* total number of passes */
96 typedef struct opj_tcd_cblk_dec {
97 OPJ_BYTE * data; /* Data */
98 opj_tcd_seg_t* segs; /* segments information */
99 OPJ_INT32 x0, y0, x1, y1; /* position of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
101 OPJ_UINT32 numlenbits;
102 OPJ_UINT32 data_max_size; /* Size of allocated data buffer */
103 OPJ_UINT32 data_current_size; /* Size of used data buffer */
104 OPJ_UINT32 numnewpasses; /* number of pass added to the code-blocks */
105 OPJ_UINT32 numsegs; /* number of segments */
106 OPJ_UINT32 real_num_segs;
107 OPJ_UINT32 m_current_max_segs;
108 } opj_tcd_cblk_dec_t;
113 typedef struct opj_tcd_precinct {
114 OPJ_INT32 x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
115 OPJ_UINT32 cw, ch; /* number of precinct in width and height */
116 union{ /* code-blocks information */
117 opj_tcd_cblk_enc_t* enc;
118 opj_tcd_cblk_dec_t* dec;
120 OPJ_UINT32 block_size; /* size taken by cblks (in bytes) */
121 opj_tgt_tree_t *incltree; /* inclusion tree */
122 opj_tgt_tree_t *imsbtree; /* IMSB tree */
123 } opj_tcd_precinct_t;
128 typedef struct opj_tcd_band {
129 OPJ_INT32 x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
131 opj_tcd_precinct_t *precincts; /* precinct information */
132 OPJ_UINT32 precincts_data_size; /* size of data taken by precincts */
134 OPJ_FLOAT32 stepsize;
140 typedef struct opj_tcd_resolution {
141 OPJ_INT32 x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
143 OPJ_UINT32 numbands; /* number sub-band for the resolution level */
144 opj_tcd_band_t bands[3]; /* subband information */
145 } opj_tcd_resolution_t;
150 typedef struct opj_tcd_tilecomp
152 OPJ_INT32 x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
153 OPJ_UINT32 numresolutions; /* number of resolutions level */
154 OPJ_UINT32 minimum_num_resolutions; /* number of resolutions level to decode (at max)*/
155 opj_tcd_resolution_t *resolutions; /* resolutions information */
156 OPJ_UINT32 resolutions_size; /* size of data for resolutions (in bytes) */
157 OPJ_INT32 *data; /* data of the component */
158 OPJ_UINT32 data_size; /* size of the data of the component */
159 OPJ_INT32 numpix; /* add fixed_quality */
160 } opj_tcd_tilecomp_t;
166 typedef struct opj_tcd_tile {
167 OPJ_INT32 x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
168 OPJ_UINT32 numcomps; /* number of components in tile */
169 opj_tcd_tilecomp_t *comps; /* Components information */
170 OPJ_INT32 numpix; /* add fixed_quality */
171 OPJ_FLOAT64 distotile; /* add fixed_quality */
172 OPJ_FLOAT64 distolayer[100]; /* add fixed_quality */
173 OPJ_UINT32 packno; /* packet number */
179 typedef struct opj_tcd_image
181 opj_tcd_tile_t *tiles; /* Tiles information */
189 typedef struct opj_tcd
191 /** Position of the tilepart flag in Progression order*/
193 /** Tile part number*/
195 /** Current tile part number*/
196 OPJ_UINT32 cur_tp_num;
197 /** Total number of tileparts of the current tile*/
198 OPJ_UINT32 cur_totnum_tp;
199 /** Current Packet iterator number */
201 /** info on each image tile */
202 opj_tcd_image_t *tcd_image;
205 /** coding parameters */
207 /** coding/decoding parameters common to all tiles */
209 /** current encoded/decoded tile */
210 OPJ_UINT32 tcd_tileno;
211 /** tell if the tcd is a decoder. */
212 OPJ_UINT32 m_is_decoder : 1;
215 /** @name Exported functions */
217 /* ----------------------------------------------------------------------- */
220 Dump the content of a tcd structure
222 /*void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);*/ /* TODO MSD shoul use the new v2 structures */
225 Create a new TCD handle
226 @param p_is_decoder FIXME DOC
227 @return Returns a new TCD handle if successful returns NULL otherwise
229 opj_tcd_t* opj_tcd_create(OPJ_BOOL p_is_decoder);
232 Destroy a previously created TCD handle
233 @param tcd TCD handle to destroy
235 void opj_tcd_destroy(opj_tcd_t *tcd);
238 * Initialize the tile coder and may reuse some memory.
239 * @param p_tcd TCD handle.
240 * @param p_image raw image.
241 * @param p_cp coding parameters.
243 * @return true if the encoding values could be set (false otherwise).
245 OPJ_BOOL opj_tcd_init( opj_tcd_t *p_tcd,
246 opj_image_t * p_image,
250 * Allocates memory for decoding a specific tile.
252 * @param p_tcd the tile decoder.
253 * @param p_tile_no the index of the tile received in sequence. This not necessarily lead to the
254 * tile at index p_tile_no.
256 * @return true if the remaining data is sufficient.
258 OPJ_BOOL opj_tcd_init_decode_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no);
260 void opj_tcd_makelayer_fixed(opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_UINT32 final);
262 void opj_tcd_rateallocate_fixed(opj_tcd_t *tcd);
264 void opj_tcd_makelayer( opj_tcd_t *tcd,
269 OPJ_BOOL opj_tcd_rateallocate( opj_tcd_t *tcd,
271 OPJ_UINT32 * p_data_written,
273 opj_codestream_info_t *cstr_info);
276 * Gets the maximum tile size that will be taken by the tile once decoded.
278 OPJ_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd );
281 * Encodes a tile from the raw image into the given buffer.
282 * @param p_tcd Tile Coder handle
283 * @param p_tile_no Index of the tile to encode.
284 * @param p_dest Destination buffer
285 * @param p_data_written pointer to an int that is incremented by the number of bytes really written on p_dest
286 * @param p_len Maximum length of the destination buffer
287 * @param p_cstr_info Codestream information structure
288 * @return true if the coding is successfull.
290 OPJ_BOOL opj_tcd_encode_tile( opj_tcd_t *p_tcd,
291 OPJ_UINT32 p_tile_no,
293 OPJ_UINT32 * p_data_written,
295 struct opj_codestream_info *p_cstr_info);
299 Decode a tile from a buffer into a raw image
300 @param tcd TCD handle
301 @param src Source buffer
302 @param len Length of source buffer
303 @param tileno Number that identifies one of the tiles to be decoded
304 @param cstr_info FIXME DOC
306 OPJ_BOOL opj_tcd_decode_tile( opj_tcd_t *tcd,
310 opj_codestream_index_t *cstr_info);
314 * Copies tile data from the system onto the given memory block.
316 OPJ_BOOL opj_tcd_update_tile_data ( opj_tcd_t *p_tcd,
318 OPJ_UINT32 p_dest_length );
323 OPJ_UINT32 opj_tcd_get_encoded_tile_size ( opj_tcd_t *p_tcd );
326 * Initialize the tile coder and may reuse some meory.
328 * @param p_tcd TCD handle.
329 * @param p_tile_no current tile index to encode.
331 * @return true if the encoding values could be set (false otherwise).
333 OPJ_BOOL opj_tcd_init_encode_tile ( opj_tcd_t *p_tcd,
334 OPJ_UINT32 p_tile_no );
337 * Copies tile data from the given memory block onto the system.
339 OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd,
341 OPJ_UINT32 p_src_length );
343 /* ----------------------------------------------------------------------- */