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+/*
+ * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2007, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __T2_H
+#define __T2_H
+/**
+@file t2.h
+@brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
+
+*/
+
+/** @defgroup T2 T2 - Implementation of a tier-2 coding */
+/*@{*/
+
+/**
+Tier-2 coding
+*/
+typedef struct opj_t2 {
+        /** codec context */
+        opj_common_ptr cinfo;
+
+        /** Encoding: pointer to the src image. Decoding: pointer to the dst image. */
+        opj_image_t *image;
+        /** pointer to the image coding parameters */
+        opj_cp_t *cp;
+} opj_t2_t;
+
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+
+/**
+Encode the packets of a tile to a destination buffer
+@param t2 T2 handle
+@param tileno number of the tile encoded
+@param tile the tile for which to write the packets
+@param maxlayers maximum number of layers
+@param dest the destination buffer
+@param len the length of the destination buffer
+@param image_info structure to create an index file
+@param tpnum Tile part number of the current tile
+@param tppos The position of the tile part flag in the progression order
+@param t2_mode If == 0 In Threshold calculation ,If == 1 Final pass
+*/
+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,int tpnum, int tppos,int pino,J2K_T2_MODE t2_mode);
+/**
+Decode the packets of a tile from a source buffer
+@param t2 T2 handle
+@param src the source buffer
+@param len length of the source buffer
+@param tileno number that identifies the tile for which to decode the packets
+@param tile tile for which to decode the packets
+ */
+int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile);
+
+/**
+Create a T2 handle
+@param cinfo Codec context info
+@param image Source or destination image
+@param cp Image coding parameters
+@return Returns a new T2 handle if successful, returns NULL otherwise
+*/
+opj_t2_t* t2_create(opj_common_ptr cinfo, opj_image_t *image, opj_cp_t *cp);
+/**
+Destroy a T2 handle
+@param t2 T2 handle to destroy
+*/
+void t2_destroy(opj_t2_t *t2);
+
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+#endif /* __T2_H */