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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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 */
55 /** @name Exported functions */
57 /* ----------------------------------------------------------------------- */
60 Encode the packets of a tile to a destination buffer
62 @param tileno number of the tile encoded
63 @param tile the tile for which to write the packets
64 @param maxlayers maximum number of layers
65 @param dest the destination buffer
66 @param p_data_written FIXME DOC
67 @param len the length of the destination buffer
68 @param cstr_info Codestream information structure
69 @param tpnum Tile part number of the current tile
70 @param tppos The position of the tile part flag in the progression order
72 @param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
74 opj_bool opj_t2_encode_packets( opj_t2_t* t2,
79 OPJ_UINT32 * p_data_written,
81 opj_codestream_info_t *cstr_info,
88 Decode the packets of a tile from a source buffer
90 @param tileno number that identifies the tile for which to decode the packets
91 @param tile tile for which to decode the packets
93 @param p_data_read the source buffer
94 @param len length of the source buffer
95 @param cstr_info FIXME DOC
99 opj_bool opj_t2_decode_packets( opj_t2_t *t2,
101 opj_tcd_tile_t *tile,
103 OPJ_UINT32 * p_data_read,
105 opj_codestream_index_t *cstr_info);
108 * Creates a Tier 2 handle
110 * @param p_image Source or destination image
111 * @param p_cp Image coding parameters.
112 * @return a new T2 handle if successful, NULL otherwise.
114 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_v2_t *p_cp);
118 @param t2 T2 handle to destroy
120 void opj_t2_destroy(opj_t2_t *t2);
122 /* ----------------------------------------------------------------------- */