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8 * Copyright (c) 2002-2003, Yannick Verschueren
9 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
10 * Copyright (c) 2005, Herve Drolon, FreeImage Team
11 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
12 * Copyright (c) 2006, Mónica Díez García, Image Processing Laboratory, University of Valladolid, Spain
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40 @brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
44 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
50 typedef struct opj_t2 {
53 /** Encoding: pointer to the src volume. Decoding: pointer to the dst volume. */
55 /** Pointer to the volume coding parameters */
59 /** @name Funciones generales */
61 /* ----------------------------------------------------------------------- */
64 Encode the packets of a tile to a destination buffer
66 @param tileno number of the tile encoded
67 @param tile the tile for which to write the packets
68 @param maxlayers maximum number of layers
69 @param dest the destination buffer
70 @param len the length of the destination buffer
71 @param volume_info structure to create an index file
72 @return Number of bytes written from packets
74 int t2_encode_packets(opj_t2_t* t2, int tileno, opj_tcd_tile_t *tile,
75 int maxlayers, unsigned char *dest, int len, opj_volume_info_t *volume_info);
78 Decode the packets of a tile from a source buffer
80 @param src the source buffer
81 @param len length of the source buffer
82 @param tileno number that identifies the tile for which to decode the packets
83 @param tile tile for which to decode the packets
84 @return Number of bytes read from packets
86 int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno,
87 opj_tcd_tile_t *tile);
91 @param cinfo Codec context info
92 @param volume Source or destination volume
93 @param cp Volume coding parameters
94 @return Returns a new T2 handle if successful, returns NULL otherwise
96 opj_t2_t* t2_create(opj_common_ptr cinfo, opj_volume_t *volume, opj_cp_t *cp);
99 @param t2 T2 handle to destroy
101 void t2_destroy(opj_t2_t *t2);
103 /* ----------------------------------------------------------------------- */