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; /* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
101 OPJ_UINT32 numlenbits;
102 OPJ_UINT32 len; /* length */
103 OPJ_UINT32 numnewpasses; /* number of pass added to the code-blocks */
104 OPJ_UINT32 numsegs; /* number of segments */
105 OPJ_UINT32 real_num_segs;
106 OPJ_UINT32 m_current_max_segs;
107 } opj_tcd_cblk_dec_t;
112 typedef struct opj_tcd_precinct {
113 OPJ_INT32 x0, y0, x1, y1; /* dimension of the precinct : left upper corner (x0, y0) right low corner (x1,y1) */
114 OPJ_UINT32 cw, ch; /* number of precinct in width and height */
115 union{ /* code-blocks information */
116 opj_tcd_cblk_enc_t* enc;
117 opj_tcd_cblk_dec_t* dec;
119 OPJ_UINT32 block_size; /* size taken by cblks (in bytes) */
120 opj_tgt_tree_t *incltree; /* inclusion tree */
121 opj_tgt_tree_t *imsbtree; /* IMSB tree */
122 } opj_tcd_precinct_t;
127 typedef struct opj_tcd_band {
128 OPJ_INT32 x0, y0, x1, y1; /* dimension of the subband : left upper corner (x0, y0) right low corner (x1,y1) */
130 opj_tcd_precinct_t *precincts; /* precinct information */
131 OPJ_UINT32 precincts_data_size; /* size of data taken by precincts */
133 OPJ_FLOAT32 stepsize;
139 typedef struct opj_tcd_resolution {
140 OPJ_INT32 x0, y0, x1, y1; /* dimension of the resolution level : left upper corner (x0, y0) right low corner (x1,y1) */
142 OPJ_UINT32 numbands; /* number sub-band for the resolution level */
143 opj_tcd_band_t bands[3]; /* subband information */
144 } opj_tcd_resolution_t;
149 typedef struct opj_tcd_tilecomp
151 OPJ_INT32 x0, y0, x1, y1; /* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
152 OPJ_UINT32 numresolutions; /* number of resolutions level */
153 OPJ_UINT32 minimum_num_resolutions; /* number of resolutions level to decode (at max)*/
154 opj_tcd_resolution_t *resolutions; /* resolutions information */
155 OPJ_UINT32 resolutions_size; /* size of data for resolutions (in bytes) */
156 OPJ_INT32 *data; /* data of the component */
157 OPJ_UINT32 data_size; /* size of the data of the component */
158 OPJ_INT32 numpix; /* add fixed_quality */
159 } opj_tcd_tilecomp_t;
165 typedef struct opj_tcd_tile {
166 OPJ_INT32 x0, y0, x1, y1; /* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
167 OPJ_UINT32 numcomps; /* number of components in tile */
168 opj_tcd_tilecomp_t *comps; /* Components information */
169 OPJ_INT32 numpix; /* add fixed_quality */
170 OPJ_FLOAT64 distotile; /* add fixed_quality */
171 OPJ_FLOAT64 distolayer[100]; /* add fixed_quality */
172 OPJ_UINT32 packno; /* packet number */
178 typedef struct opj_tcd_image
180 opj_tcd_tile_t *tiles; /* Tiles information */
188 typedef struct opj_tcd
190 /** Position of the tilepart flag in Progression order*/
192 /** Tile part number*/
194 /** Current tile part number*/
195 OPJ_UINT32 cur_tp_num;
196 /** Total number of tileparts of the current tile*/
197 OPJ_UINT32 cur_totnum_tp;
198 /** Current Packet iterator number */
200 /** info on each image tile */
201 opj_tcd_image_t *tcd_image;
204 /** coding parameters */
206 /** coding/decoding parameters common to all tiles */
208 /** current encoded/decoded tile */
209 OPJ_UINT32 tcd_tileno;
210 /** tell if the tcd is a decoder. */
211 OPJ_UINT32 m_is_decoder : 1;
214 /** @name Exported functions */
216 /* ----------------------------------------------------------------------- */
219 Dump the content of a tcd structure
221 /*void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);*/ /* TODO MSD shoul use the new v2 structures */
224 Create a new TCD handle
225 @param p_is_decoder FIXME DOC
226 @return Returns a new TCD handle if successful returns NULL otherwise
228 opj_tcd_t* opj_tcd_create(OPJ_BOOL p_is_decoder);
231 Destroy a previously created TCD handle
232 @param tcd TCD handle to destroy
234 void opj_tcd_destroy(opj_tcd_t *tcd);
237 * Initialize the tile coder and may reuse some memory.
238 * @param p_tcd TCD handle.
239 * @param p_image raw image.
240 * @param p_cp coding parameters.
242 * @return true if the encoding values could be set (false otherwise).
244 OPJ_BOOL opj_tcd_init( opj_tcd_t *p_tcd,
245 opj_image_t * p_image,
249 * Allocates memory for decoding a specific tile.
251 * @param p_tcd the tile decoder.
252 * @param p_tile_no the index of the tile received in sequence. This not necessarily lead to the
253 * tile at index p_tile_no.
255 * @return true if the remaining data is sufficient.
257 OPJ_BOOL opj_tcd_init_decode_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no);
259 void opj_tcd_makelayer_fixed(opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_UINT32 final);
261 void opj_tcd_rateallocate_fixed(opj_tcd_t *tcd);
263 void opj_tcd_makelayer( opj_tcd_t *tcd,
268 OPJ_BOOL opj_tcd_rateallocate( opj_tcd_t *tcd,
270 OPJ_UINT32 * p_data_written,
272 opj_codestream_info_t *cstr_info);
275 * Gets the maximum tile size that will be taken by the tile once decoded.
277 OPJ_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd );
280 * Encodes a tile from the raw image into the given buffer.
281 * @param p_tcd Tile Coder handle
282 * @param p_tile_no Index of the tile to encode.
283 * @param p_dest Destination buffer
284 * @param p_data_written pointer to an int that is incremented by the number of bytes really written on p_dest
285 * @param p_len Maximum length of the destination buffer
286 * @param p_cstr_info Codestream information structure
287 * @return true if the coding is successfull.
289 OPJ_BOOL opj_tcd_encode_tile( opj_tcd_t *p_tcd,
290 OPJ_UINT32 p_tile_no,
292 OPJ_UINT32 * p_data_written,
294 struct opj_codestream_info *p_cstr_info);
298 Decode a tile from a buffer into a raw image
299 @param tcd TCD handle
300 @param src Source buffer
301 @param len Length of source buffer
302 @param tileno Number that identifies one of the tiles to be decoded
303 @param cstr_info FIXME DOC
305 OPJ_BOOL opj_tcd_decode_tile( opj_tcd_t *tcd,
309 opj_codestream_index_t *cstr_info);
313 * Copies tile data from the system onto the given memory block.
315 OPJ_BOOL opj_tcd_update_tile_data ( opj_tcd_t *p_tcd,
317 OPJ_UINT32 p_dest_length );
322 OPJ_UINT32 opj_tcd_get_encoded_tile_size ( opj_tcd_t *p_tcd );
325 * Initialize the tile coder and may reuse some meory.
327 * @param p_tcd TCD handle.
328 * @param p_tile_no current tile index to encode.
330 * @return true if the encoding values could be set (false otherwise).
332 OPJ_BOOL opj_tcd_init_encode_tile ( opj_tcd_t *p_tcd,
333 OPJ_UINT32 p_tile_no );
336 * Copies tile data from the given memory block onto the system.
338 OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd,
340 OPJ_UINT32 p_src_length );
342 /* ----------------------------------------------------------------------- */