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diff --git a/libopenjpeg/dwt.h b/libopenjpeg/dwt.h
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+/*
+ * Copyright (c) 2001-2002, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2002-2003,  Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
+ * 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.
+ */
+
+#include "tcd.h"
+
+#ifndef __DWT_H
+#define __DWT_H
+
+/*
+ * Apply a reversible DWT transform to a component of an image  
+ * a: samples of the component
+ * w: width of the component
+ * h: height of the component
+ * l: number of decomposition levels in the DWT
+ */
+/* void dwt_encode(int* a, int w, int h, int l); */
+void dwt_encode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
+/*
+ * Apply a reversible inverse DWT transform to a component of an image  
+ * a: samples of the component
+ * w: width of the component
+ * h: height of the component
+ * l: number of decomposition levels in the DWT
+ */
+void dwt_decode(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
+								tcd_tilecomp_t * row_tilec, tcd_tilecomp_t * col_tilec);
+/* void dwt_decode(int* a, int w, int h,tcd_tilecomp_t *tilec, int l); */
+/*
+ * Get the gain of a subband for the reversible DWT
+ * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
+ */
+int dwt_getgain(int orient);
+
+/*
+ * Get the norm of a wavelet function of a subband at a specified level for the reversible DWT
+ * level: level of the wavelet function
+ * orient: band of the wavelet function
+ */
+double dwt_getnorm(int level, int orient);
+
+/*
+ * Apply an irreversible DWT transform to a component of an image  
+ * a: samples of the component
+ * w: width of the component
+ * h: height of the component
+ * l: number of decomposition levels in the DWT
+ */
+void dwt_encode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l);
+
+/*
+ * Apply an irreversible inverse DWT transform to a component of an image  
+ * a: samples of the component
+ * w: width of the component
+ * h: height of the component
+ * l: number of decomposition levels in the DWT
+ */
+void dwt_decode_real(int *a, int w, int h, tcd_tilecomp_t * tilec, int l,
+										 tcd_tilecomp_t * row_tilec,
+										 tcd_tilecomp_t * col_tilec);
+/*
+ * Get the gain of a subband for the irreversible DWT
+ * orient: number that identifies the subband (0->LL, 1->HL, 2->LH, 3->HH)
+ */
+int dwt_getgain_real(int orient);
+
+/*
+ * Get the norm of a wavelet function of a subband at a specified level for the irreversible DWT
+ * level: level of the wavelet function
+ * orient: band of the wavelet function
+ */
+double dwt_getnorm_real(int level, int orient);
+
+#endif