2 * Copyright (c) 2001-2003, David Janssens
3 * Copyright (c) 2002-2003, Yannick Verschueren
4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
5 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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34 @brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
38 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
44 typedef struct opj_t2 {
48 /** Encoding: pointer to the src image. Decoding: pointer to the dst image. */
50 /** pointer to the image coding parameters */
54 /** @name Exported functions */
56 /* ----------------------------------------------------------------------- */
59 Encode the packets of a tile to a destination buffer
61 @param tileno number of the tile encoded
62 @param tile the tile for which to write the packets
63 @param maxlayers maximum number of layers
64 @param dest the destination buffer
65 @param len the length of the destination buffer
66 @param image_info structure to create an index file
68 int t2_encode_packets(opj_t2_t* t2, int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_image_info_t *image_info);
71 Decode the packets of a tile from a source buffer
73 @param src the source buffer
74 @param len length of the source buffer
75 @param tileno number that identifies the tile for which to decode the packets
76 @param tile tile for which to decode the packets
78 int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile);
82 @param cinfo Codec context info
83 @param image Source or destination image
84 @param cp Image coding parameters
85 @return Returns a new T2 handle if successful, returns NULL otherwise
87 opj_t2_t* t2_create(opj_common_ptr cinfo, opj_image_t *image, opj_cp_t *cp);
90 @param t2 T2 handle to destroy
92 void t2_destroy(opj_t2_t *t2);
94 /* ----------------------------------------------------------------------- */