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
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11 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
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35 @brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
39 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
45 typedef struct opj_t2 {
49 /** Encoding: pointer to the src image. Decoding: pointer to the dst image. */
51 /** pointer to the image coding parameters */
58 typedef struct opj_t2_v2 {
62 /** Encoding: pointer to the src image. Decoding: pointer to the dst image. */
64 /** pointer to the image coding parameters */
68 /** @name Exported functions */
70 /* ----------------------------------------------------------------------- */
73 Encode the packets of a tile to a destination buffer
75 @param tileno number of the tile encoded
76 @param tile the tile for which to write the packets
77 @param maxlayers maximum number of layers
78 @param dest the destination buffer
79 @param p_data_written FIXME DOC
80 @param len the length of the destination buffer
81 @param cstr_info Codestream information structure
82 @param tpnum Tile part number of the current tile
83 @param tppos The position of the tile part flag in the progression order
85 @param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
87 opj_bool opj_t2_encode_packets( opj_t2_v2_t* t2,
89 opj_tcd_tile_v2_t *tile,
92 OPJ_UINT32 * p_data_written,
94 opj_codestream_info_t *cstr_info,
101 Decode the packets of a tile from a source buffer
103 @param tileno number that identifies the tile for which to decode the packets
104 @param tile tile for which to decode the packets
106 @param p_data_read the source buffer
107 @param len length of the source buffer
108 @param cstr_info FIXME DOC
112 opj_bool opj_t2_decode_packets( opj_t2_v2_t *t2,
114 opj_tcd_tile_v2_t *tile,
116 OPJ_UINT32 * p_data_read,
118 opj_codestream_index_t *cstr_info);
121 * Creates a Tier 2 handle
123 * @param p_image Source or destination image
124 * @param p_cp Image coding parameters.
125 * @return a new T2 handle if successful, NULL otherwise.
127 opj_t2_v2_t* opj_t2_create(opj_image_t *p_image, opj_cp_v2_t *p_cp);
131 @param t2 T2 handle to destroy
133 void opj_t2_destroy(opj_t2_v2_t *t2);
135 /* ----------------------------------------------------------------------- */