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44 @brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
48 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
54 typedef struct opj_t2 {
56 /** Encoding: pointer to the src image. Decoding: pointer to the dst image. */
58 /** pointer to the image coding parameters */
62 /** @name Exported functions */
64 /* ----------------------------------------------------------------------- */
67 Encode the packets of a tile to a destination buffer
69 @param tileno number of the tile encoded
70 @param tile the tile for which to write the packets
71 @param maxlayers maximum number of layers
72 @param dest the destination buffer
73 @param p_data_written FIXME DOC
74 @param len the length of the destination buffer
75 @param cstr_info Codestream information structure
76 @param tpnum Tile part number of the current tile
77 @param tppos The position of the tile part flag in the progression order
79 @param t2_mode If == THRESH_CALC In Threshold calculation ,If == FINAL_PASS Final pass
80 @param p_manager the user event manager
82 OPJ_BOOL opj_t2_encode_packets(opj_t2_t* t2,
87 OPJ_UINT32 * p_data_written,
89 opj_codestream_info_t *cstr_info,
94 opj_event_mgr_t *p_manager);
97 Decode the packets of a tile from a source buffer
100 @param tileno number that identifies the tile for which to decode the packets
101 @param tile tile for which to decode the packets
103 @param p_data_read the source buffer
104 @param len length of the source buffer
105 @param cstr_info FIXME DOC
106 @param p_manager the user event manager
110 OPJ_BOOL opj_t2_decode_packets(opj_tcd_t* tcd,
113 opj_tcd_tile_t *tile,
115 OPJ_UINT32 * p_data_read,
117 opj_codestream_index_t *cstr_info,
118 opj_event_mgr_t *p_manager);
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_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp);
131 @param t2 T2 handle to destroy
133 void opj_t2_destroy(opj_t2_t *t2);
135 /* ----------------------------------------------------------------------- */
140 #endif /* OPJ_T2_H */