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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 __T1_H
+#define __T1_H
+/**
+@file t1.h
+@brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1)
+
+The functions in T1.C have for goal to realize the tier-1 coding operation. The functions
+in T1.C are used by some function in TCD.C.
+*/
+
+/** @defgroup T1 T1 - Implementation of the tier-1 coding */
+/*@{*/
+
+/* ----------------------------------------------------------------------- */
+#define T1_NMSEDEC_BITS 7
+
+#define T1_SIG_NE 0x0001        /**< Context orientation : North-East direction */
+#define T1_SIG_SE 0x0002        /**< Context orientation : South-East direction */
+#define T1_SIG_SW 0x0004        /**< Context orientation : South-West direction */
+#define T1_SIG_NW 0x0008        /**< Context orientation : North-West direction */
+#define T1_SIG_N 0x0010         /**< Context orientation : North direction */
+#define T1_SIG_E 0x0020         /**< Context orientation : East direction */
+#define T1_SIG_S 0x0040         /**< Context orientation : South direction */
+#define T1_SIG_W 0x0080         /**< Context orientation : West direction */
+#define T1_SIG_OTH (T1_SIG_N|T1_SIG_NE|T1_SIG_E|T1_SIG_SE|T1_SIG_S|T1_SIG_SW|T1_SIG_W|T1_SIG_NW)
+#define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)
+
+#define T1_SGN_N 0x0100
+#define T1_SGN_E 0x0200
+#define T1_SGN_S 0x0400
+#define T1_SGN_W 0x0800
+#define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)
+
+#define T1_SIG 0x1000
+#define T1_REFINE 0x2000
+#define T1_VISIT 0x4000
+
+#define T1_NUMCTXS_ZC 9
+#define T1_NUMCTXS_SC 5
+#define T1_NUMCTXS_MAG 3
+#define T1_NUMCTXS_AGG 1
+#define T1_NUMCTXS_UNI 1
+
+#define T1_CTXNO_ZC 0
+#define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
+#define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC)
+#define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
+#define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
+#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)
+
+#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)
+
+#define T1_TYPE_MQ 0    /**< Normal coding using entropy coder */
+#define T1_TYPE_RAW 1   /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/
+
+/* ----------------------------------------------------------------------- */
+
+typedef short flag_t;
+
+/**
+Tier-1 coding (coding of code-block coefficients)
+*/
+typedef struct opj_t1 {
+        /** codec context */
+        opj_common_ptr cinfo;
+
+        /** MQC component */
+        opj_mqc_t *mqc;
+        /** RAW component */
+        opj_raw_t *raw;
+
+        int *data;
+        flag_t *flags;
+        int w;
+        int h;
+        int datasize;
+        int flagssize;
+        int flags_stride;
+} opj_t1_t;
+
+#define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)]
+
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+/**
+Create a new T1 handle 
+and initialize the look-up tables of the Tier-1 coder/decoder
+@return Returns a new T1 handle if successful, returns NULL otherwise
+@see t1_init_luts
+*/
+opj_t1_t* t1_create(opj_common_ptr cinfo);
+/**
+Destroy a previously created T1 handle
+@param t1 T1 handle to destroy
+*/
+void t1_destroy(opj_t1_t *t1);
+/**
+Encode the code-blocks of a tile
+@param t1 T1 handle
+@param tile The tile to encode
+@param tcp Tile coding parameters
+*/
+void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
+/**
+Decode the code-blocks of a tile
+@param t1 T1 handle
+@param tile The tile to decode
+@param tcp Tile coding parameters
+*/
+void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp);
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+#endif /* __T1_H */