text: /*
   * The copyright in this software is being made available under the 2-clauses 
   * BSD License, included below. This software may be subject to other third 
   * party and contributor rights, including patent rights, and no such rights
   * are granted under this license.
   *
   * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
   * Copyright (c) 2002-2014, Professor Benoit Macq
   * Copyright (c) 2001-2003, David Janssens
   * Copyright (c) 2002-2003, Yannick Verschueren
   * Copyright (c) 2003-2007, Francois-Olivier Devaux 
   * Copyright (c) 2003-2014, Antonin Descampe
   * Copyright (c) 2005, Herve Drolon, FreeImage Team
   * Copyright (c) 2007, Jonathan Ballard <dzonatas@dzonux.net>
   * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
   * 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.
   */
  
  #ifdef __SSE__
  #include <xmmintrin.h>
  #endif
  
  #include "opj_includes.h"
  
  /** @defgroup DWT DWT - Implementation of a discrete wavelet transform */
  /*@{*/
  
  #define OPJ_WS(i) v->mem[(i)*2]
  #define OPJ_WD(i) v->mem[(1+(i)*2)]
  
  /** @name Local data structures */
  /*@{*/
  
  typedef struct dwt_local {
  	OPJ_INT32* mem;
  	OPJ_INT32 dn;
  	OPJ_INT32 sn;
  	OPJ_INT32 cas;
  } opj_dwt_t;
  
  typedef union {
  	OPJ_FLOAT32	f[4];
  } opj_v4_t;
  
  typedef struct v4dwt_local {
  	opj_v4_t*	wavelet ;
  	OPJ_INT32		dn ;
  	OPJ_INT32		sn ;
  	OPJ_INT32		cas ;
  } opj_v4dwt_t ;
  
  static const OPJ_FLOAT32 opj_dwt_alpha =  1.586134342f; /*  12994 */
  static const OPJ_FLOAT32 opj_dwt_beta  =  0.052980118f; /*    434 */
  static const OPJ_FLOAT32 opj_dwt_gamma = -0.882911075f; /*  -7233 */
  static const OPJ_FLOAT32 opj_dwt_delta = -0.443506852f; /*  -3633 */
  
  static const OPJ_FLOAT32 opj_K      = 1.230174105f; /*  10078 */
  static const OPJ_FLOAT32 opj_c13318 = 1.625732422f;
  
  /*@}*/
  
  /**
  Virtual function type for wavelet transform in 1-D 
  */
  typedef void (*DWT1DFN)(opj_dwt_t* v);
  
  /** @name Local static functions */
  /*@{*/
  
  /**
  Forward lazy transform (horizontal)
  */
  static void opj_dwt_deinterleave_h(OPJ_INT32 *a, OPJ_INT32 *b, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas);
  /**
  Forward lazy transform (vertical)
  */
  static void opj_dwt_deinterleave_v(OPJ_INT32 *a, OPJ_INT32 *b, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 x, OPJ_INT32 cas);
  /**
  Inverse lazy transform (horizontal)
  */
  static void opj_dwt_interleave_h(opj_dwt_t* h, OPJ_INT32 *a);
  /**
  Inverse lazy transform (vertical)
  */
  static void opj_dwt_interleave_v(opj_dwt_t* v, OPJ_INT32 *a, OPJ_INT32 x);
  /**
  Forward 5-3 wavelet transform in 1-D
  */
  static void opj_dwt_encode_1(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas);
  /**
  Inverse 5-3 wavelet transform in 1-D
  */
  static void opj_dwt_decode_1(opj_dwt_t *v);
  static void opj_dwt_decode_1_(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas);
  /**
  Forward 9-7 wavelet transform in 1-D
  */
  static void opj_dwt_encode_1_real(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas);
  /**
  Explicit calculation of the Quantization Stepsizes 
  */
  static void opj_dwt_encode_stepsize(OPJ_INT32 stepsize, OPJ_INT32 numbps, opj_stepsize_t *bandno_stepsize);
  /**
  Inverse wavelet transform in 2-D.
  */
  static OPJ_BOOL opj_dwt_decode_tile(opj_tcd_tilecomp_t* tilec, OPJ_UINT32 i, DWT1DFN fn);
  
  static OPJ_BOOL opj_dwt_encode_procedure(	opj_tcd_tilecomp_t * tilec,
  										    void (*p_function)(OPJ_INT32 *, OPJ_INT32,OPJ_INT32,OPJ_INT32) );
  
  static OPJ_UINT32 opj_dwt_max_resolution(opj_tcd_resolution_t* OPJ_RESTRICT r, OPJ_UINT32 i);
  
  /* <summary>                             */
  /* Inverse 9-7 wavelet transform in 1-D. */
  /* </summary>                            */
  static void opj_v4dwt_decode(opj_v4dwt_t* OPJ_RESTRICT dwt);
  
  static void opj_v4dwt_interleave_h(opj_v4dwt_t* OPJ_RESTRICT w, OPJ_FLOAT32* OPJ_RESTRICT a, OPJ_INT32 x, OPJ_INT32 size);
  
  static void opj_v4dwt_interleave_v(opj_v4dwt_t* OPJ_RESTRICT v , OPJ_FLOAT32* OPJ_RESTRICT a , OPJ_INT32 x, OPJ_INT32 nb_elts_read);
  
  #ifdef __SSE__
  static void opj_v4dwt_decode_step1_sse(opj_v4_t* w, OPJ_INT32 count, const __m128 c);
  
  static void opj_v4dwt_decode_step2_sse(opj_v4_t* l, opj_v4_t* w, OPJ_INT32 k, OPJ_INT32 m, __m128 c);
  
  #else
  static void opj_v4dwt_decode_step1(opj_v4_t* w, OPJ_INT32 count, const OPJ_FLOAT32 c);
  
  static void opj_v4dwt_decode_step2(opj_v4_t* l, opj_v4_t* w, OPJ_INT32 k, OPJ_INT32 m, OPJ_FLOAT32 c);
  
  #endif
  
  /*@}*/
  
  /*@}*/
  
  #define OPJ_S(i) a[(i)*2]
  #define OPJ_D(i) a[(1+(i)*2)]
  #define OPJ_S_(i) ((i)<0?OPJ_S(0):((i)>=sn?OPJ_S(sn-1):OPJ_S(i)))
  #define OPJ_D_(i) ((i)<0?OPJ_D(0):((i)>=dn?OPJ_D(dn-1):OPJ_D(i)))
  /* new */
  #define OPJ_SS_(i) ((i)<0?OPJ_S(0):((i)>=dn?OPJ_S(dn-1):OPJ_S(i)))
  #define OPJ_DD_(i) ((i)<0?OPJ_D(0):((i)>=sn?OPJ_D(sn-1):OPJ_D(i)))
  
  /* <summary>                                                              */
  /* This table contains the norms of the 5-3 wavelets for different bands. */
  /* </summary>                                                             */
  static const OPJ_FLOAT64 opj_dwt_norms[4][10] = {
  	{1.000, 1.500, 2.750, 5.375, 10.68, 21.34, 42.67, 85.33, 170.7, 341.3},
  	{1.038, 1.592, 2.919, 5.703, 11.33, 22.64, 45.25, 90.48, 180.9},
  	{1.038, 1.592, 2.919, 5.703, 11.33, 22.64, 45.25, 90.48, 180.9},
  	{.7186, .9218, 1.586, 3.043, 6.019, 12.01, 24.00, 47.97, 95.93}
  };
  
  /* <summary>                                                              */
  /* This table contains the norms of the 9-7 wavelets for different bands. */
  /* </summary>                                                             */
  static const OPJ_FLOAT64 opj_dwt_norms_real[4][10] = {
  	{1.000, 1.965, 4.177, 8.403, 16.90, 33.84, 67.69, 135.3, 270.6, 540.9},
  	{2.022, 3.989, 8.355, 17.04, 34.27, 68.63, 137.3, 274.6, 549.0},
  	{2.022, 3.989, 8.355, 17.04, 34.27, 68.63, 137.3, 274.6, 549.0},
  	{2.080, 3.865, 8.307, 17.18, 34.71, 69.59, 139.3, 278.6, 557.2}
  };
  
  /* 
  ==========================================================
     local functions
  ==========================================================
  */
  
  /* <summary>			                 */
  /* Forward lazy transform (horizontal).  */
  /* </summary>                            */ 
  static void opj_dwt_deinterleave_h(OPJ_INT32 *a, OPJ_INT32 *b, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas) {
  	OPJ_INT32 i;
  	OPJ_INT32 * l_dest = b;
  	OPJ_INT32 * l_src = a+cas;
  
      for (i=0; i<sn; ++i) {
  		*l_dest++ = *l_src;
  		l_src += 2;
  	}
  	
      l_dest = b + sn;
  	l_src = a + 1 - cas;
  
      for	(i=0; i<dn; ++i)  {
  		*l_dest++=*l_src;
  		l_src += 2;
  	}
  }
  
  /* <summary>                             */  
  /* Forward lazy transform (vertical).    */
  /* </summary>                            */ 
  static void opj_dwt_deinterleave_v(OPJ_INT32 *a, OPJ_INT32 *b, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 x, OPJ_INT32 cas) {
      OPJ_INT32 i = sn;
  	OPJ_INT32 * l_dest = b;
  	OPJ_INT32 * l_src = a+cas;
  
      while (i--) {
  		*l_dest = *l_src;
  		l_dest += x;
  		l_src += 2;
  		} /* b[i*x]=a[2*i+cas]; */
  
  	l_dest = b + sn * x;
  	l_src = a + 1 - cas;
  	
  	i = dn;
      while (i--) {
  		*l_dest = *l_src;
  		l_dest += x;
  		l_src += 2;
          } /*b[(sn+i)*x]=a[(2*i+1-cas)];*/
  }
  
  /* <summary>                             */
  /* Inverse lazy transform (horizontal).  */
  /* </summary>                            */
  static void opj_dwt_interleave_h(opj_dwt_t* h, OPJ_INT32 *a) {
      OPJ_INT32 *ai = a;
      OPJ_INT32 *bi = h->mem + h->cas;
      OPJ_INT32  i	= h->sn;
      while( i-- ) {
        *bi = *(ai++);
  	  bi += 2;
      }
      ai	= a + h->sn;
      bi	= h->mem + 1 - h->cas;
      i	= h->dn ;
      while( i-- ) {
        *bi = *(ai++);
  	  bi += 2;
      }
  }
  
  /* <summary>                             */  
  /* Inverse lazy transform (vertical).    */
  /* </summary>                            */ 
  static void opj_dwt_interleave_v(opj_dwt_t* v, OPJ_INT32 *a, OPJ_INT32 x) {
      OPJ_INT32 *ai = a;
      OPJ_INT32 *bi = v->mem + v->cas;
      OPJ_INT32  i = v->sn;
      while( i-- ) {
        *bi = *ai;
  	  bi += 2;
  	  ai += x;
      }
      ai = a + (v->sn * x);
      bi = v->mem + 1 - v->cas;
      i = v->dn ;
      while( i-- ) {
        *bi = *ai;
  	  bi += 2;  
  	  ai += x;
      }
  }
  
  
  /* <summary>                            */
  /* Forward 5-3 wavelet transform in 1-D. */
  /* </summary>                           */
  static void opj_dwt_encode_1(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas) {
  	OPJ_INT32 i;
  	
  	if (!cas) {
  		if ((dn > 0) || (sn > 1)) {	/* NEW :  CASE ONE ELEMENT */
  			for (i = 0; i < dn; i++) OPJ_D(i) -= (OPJ_S_(i) + OPJ_S_(i + 1)) >> 1;
  			for (i = 0; i < sn; i++) OPJ_S(i) += (OPJ_D_(i - 1) + OPJ_D_(i) + 2) >> 2;
  		}
  	} else {
  		if (!sn && dn == 1)		    /* NEW :  CASE ONE ELEMENT */
  			OPJ_S(0) *= 2;
  		else {
  			for (i = 0; i < dn; i++) OPJ_S(i) -= (OPJ_DD_(i) + OPJ_DD_(i - 1)) >> 1;
  			for (i = 0; i < sn; i++) OPJ_D(i) += (OPJ_SS_(i) + OPJ_SS_(i + 1) + 2) >> 2;
  		}
  	}
  }
  
  /* <summary>                            */
  /* Inverse 5-3 wavelet transform in 1-D. */
  /* </summary>                           */ 
  static void opj_dwt_decode_1_(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas) {
  	OPJ_INT32 i;
  	
  	if (!cas) {
  		if ((dn > 0) || (sn > 1)) { /* NEW :  CASE ONE ELEMENT */
  			for (i = 0; i < sn; i++) OPJ_S(i) -= (OPJ_D_(i - 1) + OPJ_D_(i) + 2) >> 2;
  			for (i = 0; i < dn; i++) OPJ_D(i) += (OPJ_S_(i) + OPJ_S_(i + 1)) >> 1;
  		}
  	} else {
  		if (!sn  && dn == 1)          /* NEW :  CASE ONE ELEMENT */
  			OPJ_S(0) /= 2;
  		else {
  			for (i = 0; i < sn; i++) OPJ_D(i) -= (OPJ_SS_(i) + OPJ_SS_(i + 1) + 2) >> 2;
  			for (i = 0; i < dn; i++) OPJ_S(i) += (OPJ_DD_(i) + OPJ_DD_(i - 1)) >> 1;
  		}
  	}
  }
  
  /* <summary>                            */
  /* Inverse 5-3 wavelet transform in 1-D. */
  /* </summary>                           */ 
  static void opj_dwt_decode_1(opj_dwt_t *v) {
  	opj_dwt_decode_1_(v->mem, v->dn, v->sn, v->cas);
  }
  
  /* <summary>                             */
  /* Forward 9-7 wavelet transform in 1-D. */
  /* </summary>                            */
  static void opj_dwt_encode_1_real(OPJ_INT32 *a, OPJ_INT32 dn, OPJ_INT32 sn, OPJ_INT32 cas) {
  	OPJ_INT32 i;
  	if (!cas) {
  		if ((dn > 0) || (sn > 1)) {	/* NEW :  CASE ONE ELEMENT */
  			for (i = 0; i < dn; i++)
  				OPJ_D(i) -= opj_int_fix_mul(OPJ_S_(i) + OPJ_S_(i + 1), 12993);
  			for (i = 0; i < sn; i++)
  				OPJ_S(i) -= opj_int_fix_mul(OPJ_D_(i - 1) + OPJ_D_(i), 434);
  			for (i = 0; i < dn; i++)
  				OPJ_D(i) += opj_int_fix_mul(OPJ_S_(i) + OPJ_S_(i + 1), 7233);
  			for (i = 0; i < sn; i++)
  				OPJ_S(i) += opj_int_fix_mul(OPJ_D_(i - 1) + OPJ_D_(i), 3633);
  			for (i = 0; i < dn; i++)
  				OPJ_D(i) = opj_int_fix_mul(OPJ_D(i), 5038);	/*5038 */
  			for (i = 0; i < sn; i++)
  				OPJ_S(i) = opj_int_fix_mul(OPJ_S(i), 6659);	/*6660 */
  		}
  	} else {
  		if ((sn > 0) || (dn > 1)) {	/* NEW :  CASE ONE ELEMENT */
  			for (i = 0; i < dn; i++)
  				OPJ_S(i) -= opj_int_fix_mul(OPJ_DD_(i) + OPJ_DD_(i - 1), 12993);
  			for (i = 0; i < sn; i++)
  				OPJ_D(i) -= opj_int_fix_mul(OPJ_SS_(i) + OPJ_SS_(i + 1), 434);
  			for (i = 0; i < dn; i++)
  				OPJ_S(i) += opj_int_fix_mul(OPJ_DD_(i) + OPJ_DD_(i - 1), 7233);
  			for (i = 0; i < sn; i++)
  				OPJ_D(i) += opj_int_fix_mul(OPJ_SS_(i) + OPJ_SS_(i + 1), 3633);
  			for (i = 0; i < dn; i++)
  				OPJ_S(i) = opj_int_fix_mul(OPJ_S(i), 5038);	/*5038 */
  			for (i = 0; i < sn; i++)
  				OPJ_D(i) = opj_int_fix_mul(OPJ_D(i), 6659);	/*6660 */
  		}
  	}
  }
  
  static void opj_dwt_encode_stepsize(OPJ_INT32 stepsize, OPJ_INT32 numbps, opj_stepsize_t *bandno_stepsize) {
  	OPJ_INT32 p, n;
  	p = opj_int_floorlog2(stepsize) - 13;
  	n = 11 - opj_int_floorlog2(stepsize);
  	bandno_stepsize->mant = (n < 0 ? stepsize >> -n : stepsize << n) & 0x7ff;
  	bandno_stepsize->expn = numbps - p;
  }
  
  /* 
  ==========================================================
     DWT interface
  ==========================================================
  */
  
  
  /* <summary>                            */
  /* Forward 5-3 wavelet transform in 2-D. */
  /* </summary>                           */
  static INLINE OPJ_BOOL opj_dwt_encode_procedure(opj_tcd_tilecomp_t * tilec,void (*p_function)(OPJ_INT32 *, OPJ_INT32,OPJ_INT32,OPJ_INT32) )
  {
  	OPJ_INT32 i, j, k;
  	OPJ_INT32 *a = 00;
  	OPJ_INT32 *aj = 00;
  	OPJ_INT32 *bj = 00;
  	OPJ_INT32 w, l;
  
  	OPJ_INT32 rw;			/* width of the resolution level computed   */
  	OPJ_INT32 rh;			/* height of the resolution level computed  */
      size_t l_data_size;
  
  	opj_tcd_resolution_t * l_cur_res = 0;
  	opj_tcd_resolution_t * l_last_res = 0;
  
  	w = tilec->x1-tilec->x0;
  	l = (OPJ_INT32)tilec->numresolutions-1;
  	a = tilec->data;
  
  	l_cur_res = tilec->resolutions + l;
  	l_last_res = l_cur_res - 1;
  
  	l_data_size = opj_dwt_max_resolution(tilec->resolutions, tilec->numresolutions);
   
  	/* overflow check */
      if (l_data_size > (SIZE_MAX / sizeof(OPJ_INT32))) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  
      l_data_size *= sizeof(OPJ_INT32);
      bj = (OPJ_INT32*)opj_malloc(l_data_size);
  	/* l_data_size is equal to 0 when numresolutions == 1 but bj is not used */
  	/* in that case, so do not error out */
  	if (l_data_size != 0 && ! bj) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  	i = l;
  
  	while (i--) {
  		OPJ_INT32 rw1;		/* width of the resolution level once lower than computed one                                       */
  		OPJ_INT32 rh1;		/* height of the resolution level once lower than computed one                                      */
  		OPJ_INT32 cas_col;	/* 0 = non inversion on horizontal filtering 1 = inversion between low-pass and high-pass filtering */
  		OPJ_INT32 cas_row;	/* 0 = non inversion on vertical filtering 1 = inversion between low-pass and high-pass filtering   */
  		OPJ_INT32 dn, sn;
  
  		rw  = l_cur_res->x1 - l_cur_res->x0;
  		rh  = l_cur_res->y1 - l_cur_res->y0;
  		rw1 = l_last_res->x1 - l_last_res->x0;
  		rh1 = l_last_res->y1 - l_last_res->y0;
  
  		cas_row = l_cur_res->x0 & 1;
  		cas_col = l_cur_res->y0 & 1;
  
  		sn = rh1;
  		dn = rh - rh1;
  		for (j = 0; j < rw; ++j) {
  			aj = a + j;
  			for (k = 0; k < rh; ++k) {
  				bj[k] = aj[k*w];
  			}
  
  			(*p_function) (bj, dn, sn, cas_col);
  
  			opj_dwt_deinterleave_v(bj, aj, dn, sn, w, cas_col);
  		}
  
  		sn = rw1;
  		dn = rw - rw1;
  
  		for (j = 0; j < rh; j++) {
  			aj = a + j * w;
  			for (k = 0; k < rw; k++)  bj[k] = aj[k];
  			(*p_function) (bj, dn, sn, cas_row);
  			opj_dwt_deinterleave_h(bj, aj, dn, sn, cas_row);
  		}
  
  		l_cur_res = l_last_res;
  
  		--l_last_res;
  	}
  
  	opj_free(bj);
  	return OPJ_TRUE;
  }
  
  /* Forward 5-3 wavelet transform in 2-D. */
  /* </summary>                           */
  OPJ_BOOL opj_dwt_encode(opj_tcd_tilecomp_t * tilec)
  {
  	return opj_dwt_encode_procedure(tilec,opj_dwt_encode_1);
  }
  
  /* <summary>                            */
  /* Inverse 5-3 wavelet transform in 2-D. */
  /* </summary>                           */
  OPJ_BOOL opj_dwt_decode(opj_tcd_tilecomp_t* tilec, OPJ_UINT32 numres) {
  	return opj_dwt_decode_tile(tilec, numres, &opj_dwt_decode_1);
  }
  
  
  /* <summary>                          */
  /* Get gain of 5-3 wavelet transform. */
  /* </summary>                         */
  OPJ_UINT32 opj_dwt_getgain(OPJ_UINT32 orient) {
  	if (orient == 0)
  		return 0;
  	if (orient == 1 || orient == 2)
  		return 1;
  	return 2;
  }
  
  /* <summary>                */
  /* Get norm of 5-3 wavelet. */
  /* </summary>               */
  OPJ_FLOAT64 opj_dwt_getnorm(OPJ_UINT32 level, OPJ_UINT32 orient) {
  	return opj_dwt_norms[orient][level];
  }
  
  /* <summary>                             */
  /* Forward 9-7 wavelet transform in 2-D. */
  /* </summary>                            */
  OPJ_BOOL opj_dwt_encode_real(opj_tcd_tilecomp_t * tilec)
  {
  	return opj_dwt_encode_procedure(tilec,opj_dwt_encode_1_real);
  }
  
  /* <summary>                          */
  /* Get gain of 9-7 wavelet transform. */
  /* </summary>                         */
  OPJ_UINT32 opj_dwt_getgain_real(OPJ_UINT32 orient) {
  	(void)orient;
  	return 0;
  }
  
  /* <summary>                */
  /* Get norm of 9-7 wavelet. */
  /* </summary>               */
  OPJ_FLOAT64 opj_dwt_getnorm_real(OPJ_UINT32 level, OPJ_UINT32 orient) {
  	return opj_dwt_norms_real[orient][level];
  }
  
  void opj_dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, OPJ_UINT32 prec) {
  	OPJ_UINT32 numbands, bandno;
  	numbands = 3 * tccp->numresolutions - 2;
  	for (bandno = 0; bandno < numbands; bandno++) {
  		OPJ_FLOAT64 stepsize;
  		OPJ_UINT32 resno, level, orient, gain;
  
  		resno = (bandno == 0) ? 0 : ((bandno - 1) / 3 + 1);
  		orient = (bandno == 0) ? 0 : ((bandno - 1) % 3 + 1);
  		level = tccp->numresolutions - 1 - resno;
  		gain = (tccp->qmfbid == 0) ? 0 : ((orient == 0) ? 0 : (((orient == 1) || (orient == 2)) ? 1 : 2));
  		if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
  			stepsize = 1.0;
  		} else {
  			OPJ_FLOAT64 norm = opj_dwt_norms_real[orient][level];
  			stepsize = (1 << (gain)) / norm;
  		}
  		opj_dwt_encode_stepsize((OPJ_INT32) floor(stepsize * 8192.0), (OPJ_INT32)(prec + gain), &tccp->stepsizes[bandno]);
  	}
  }
  
  /* <summary>                             */
  /* Determine maximum computed resolution level for inverse wavelet transform */
  /* </summary>                            */
  static OPJ_UINT32 opj_dwt_max_resolution(opj_tcd_resolution_t* OPJ_RESTRICT r, OPJ_UINT32 i) {
  	OPJ_UINT32 mr	= 0;
  	OPJ_UINT32 w;
  	while( --i ) {
  		++r;
  		if( mr < ( w = (OPJ_UINT32)(r->x1 - r->x0) ) )
  			mr = w ;
  		if( mr < ( w = (OPJ_UINT32)(r->y1 - r->y0) ) )
  			mr = w ;
  	}
  	return mr ;
  }
  
  /* <summary>                            */
  /* Inverse wavelet transform in 2-D.     */
  /* </summary>                           */
  static OPJ_BOOL opj_dwt_decode_tile(opj_tcd_tilecomp_t* tilec, OPJ_UINT32 numres, DWT1DFN dwt_1D) {
  	opj_dwt_t h;
  	opj_dwt_t v;
  
  	opj_tcd_resolution_t* tr = tilec->resolutions;
  
  	OPJ_UINT32 rw = (OPJ_UINT32)(tr->x1 - tr->x0);	/* width of the resolution level computed */
  	OPJ_UINT32 rh = (OPJ_UINT32)(tr->y1 - tr->y0);	/* height of the resolution level computed */
  
  	OPJ_UINT32 w = (OPJ_UINT32)(tilec->x1 - tilec->x0);
  
      size_t mr; /* max resolution */
  	
  	if (numres == 1U) {
  		return OPJ_TRUE;
  	}
  	
      mr = opj_dwt_max_resolution(tr, numres);
  	
  	/* overflow check */
      if (mr > (SIZE_MAX / sizeof(OPJ_INT32))) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  	
      mr *= sizeof(OPJ_INT32);
      h.mem = (OPJ_INT32*)opj_aligned_malloc(mr);
  	if (! h.mem){
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  
  	v.mem = h.mem;
  
  	while( --numres) {
  		OPJ_INT32 * OPJ_RESTRICT tiledp = tilec->data;
  		OPJ_UINT32 j;
  
  		++tr;
  		h.sn = (OPJ_INT32)rw;
  		v.sn = (OPJ_INT32)rh;
  
  		rw = (OPJ_UINT32)(tr->x1 - tr->x0);
  		rh = (OPJ_UINT32)(tr->y1 - tr->y0);
  
  		h.dn = (OPJ_INT32)(rw - (OPJ_UINT32)h.sn);
  		h.cas = tr->x0 % 2;
  
  		for(j = 0; j < rh; ++j) {
  			opj_dwt_interleave_h(&h, &tiledp[j*w]);
  			(dwt_1D)(&h);
  			memcpy(&tiledp[j*w], h.mem, rw * sizeof(OPJ_INT32));
  		}
  
  		v.dn = (OPJ_INT32)(rh - (OPJ_UINT32)v.sn);
  		v.cas = tr->y0 % 2;
  
  		for(j = 0; j < rw; ++j){
  			OPJ_UINT32 k;
  			opj_dwt_interleave_v(&v, &tiledp[j], (OPJ_INT32)w);
  			(dwt_1D)(&v);
  			for(k = 0; k < rh; ++k) {
  				tiledp[k * w + j] = v.mem[k];
  			}
  		}
  	}
  	opj_aligned_free(h.mem);
  	return OPJ_TRUE;
  }
  
  static void opj_v4dwt_interleave_h(opj_v4dwt_t* OPJ_RESTRICT w, OPJ_FLOAT32* OPJ_RESTRICT a, OPJ_INT32 x, OPJ_INT32 size){
  	OPJ_FLOAT32* OPJ_RESTRICT bi = (OPJ_FLOAT32*) (w->wavelet + w->cas);
  	OPJ_INT32 count = w->sn;
  	OPJ_INT32 i, k;
  
  	for(k = 0; k < 2; ++k){
  		if ( count + 3 * x < size && ((size_t) a & 0x0f) == 0 && ((size_t) bi & 0x0f) == 0 && (x & 0x0f) == 0 ) {
  			/* Fast code path */
  			for(i = 0; i < count; ++i){
  				OPJ_INT32 j = i;
  				bi[i*8    ] = a[j];
  				j += x;
  				bi[i*8 + 1] = a[j];
  				j += x;
  				bi[i*8 + 2] = a[j];
  				j += x;
  				bi[i*8 + 3] = a[j];
  			}
  		}
  		else {
  			/* Slow code path */
  			for(i = 0; i < count; ++i){
  				OPJ_INT32 j = i;
  				bi[i*8    ] = a[j];
  				j += x;
  				if(j >= size) continue;
  				bi[i*8 + 1] = a[j];
  				j += x;
  				if(j >= size) continue;
  				bi[i*8 + 2] = a[j];
  				j += x;
  				if(j >= size) continue;
  				bi[i*8 + 3] = a[j]; /* This one*/
  			}
  		}
  
  		bi = (OPJ_FLOAT32*) (w->wavelet + 1 - w->cas);
  		a += w->sn;
  		size -= w->sn;
  		count = w->dn;
  	}
  }
  
  static void opj_v4dwt_interleave_v(opj_v4dwt_t* OPJ_RESTRICT v , OPJ_FLOAT32* OPJ_RESTRICT a , OPJ_INT32 x, OPJ_INT32 nb_elts_read){
  	opj_v4_t* OPJ_RESTRICT bi = v->wavelet + v->cas;
  	OPJ_INT32 i;
  
  	for(i = 0; i < v->sn; ++i){
  		memcpy(&bi[i*2], &a[i*x], (size_t)nb_elts_read * sizeof(OPJ_FLOAT32));
  	}
  
  	a += v->sn * x;
  	bi = v->wavelet + 1 - v->cas;
  
  	for(i = 0; i < v->dn; ++i){
  		memcpy(&bi[i*2], &a[i*x], (size_t)nb_elts_read * sizeof(OPJ_FLOAT32));
  	}
  }
  
  #ifdef __SSE__
  
  static void opj_v4dwt_decode_step1_sse(opj_v4_t* w, OPJ_INT32 count, const __m128 c){
  	__m128* OPJ_RESTRICT vw = (__m128*) w;
  	OPJ_INT32 i;
  	/* 4x unrolled loop */
  	for(i = 0; i < count >> 2; ++i){
  		*vw = _mm_mul_ps(*vw, c);
  		vw += 2;
  		*vw = _mm_mul_ps(*vw, c);
  		vw += 2;
  		*vw = _mm_mul_ps(*vw, c);
  		vw += 2;
  		*vw = _mm_mul_ps(*vw, c);
  		vw += 2;
  	}
  	count &= 3;
  	for(i = 0; i < count; ++i){
  		*vw = _mm_mul_ps(*vw, c);
  		vw += 2;
  	}
  }
  
  void opj_v4dwt_decode_step2_sse(opj_v4_t* l, opj_v4_t* w, OPJ_INT32 k, OPJ_INT32 m, __m128 c){
  	__m128* OPJ_RESTRICT vl = (__m128*) l;
  	__m128* OPJ_RESTRICT vw = (__m128*) w;
  	OPJ_INT32 i;
  	__m128 tmp1, tmp2, tmp3;
  	tmp1 = vl[0];
  	for(i = 0; i < m; ++i){
  		tmp2 = vw[-1];
  		tmp3 = vw[ 0];
  		vw[-1] = _mm_add_ps(tmp2, _mm_mul_ps(_mm_add_ps(tmp1, tmp3), c));
  		tmp1 = tmp3;
  		vw += 2;
  	}
  	vl = vw - 2;
  	if(m >= k){
  		return;
  	}
  	c = _mm_add_ps(c, c);
  	c = _mm_mul_ps(c, vl[0]);
  	for(; m < k; ++m){
  		__m128 tmp = vw[-1];
  		vw[-1] = _mm_add_ps(tmp, c);
  		vw += 2;
  	}
  }
  
  #else
  
  static void opj_v4dwt_decode_step1(opj_v4_t* w, OPJ_INT32 count, const OPJ_FLOAT32 c)
  {
  	OPJ_FLOAT32* OPJ_RESTRICT fw = (OPJ_FLOAT32*) w;
  	OPJ_INT32 i;
  	for(i = 0; i < count; ++i){
  		OPJ_FLOAT32 tmp1 = fw[i*8    ];
  		OPJ_FLOAT32 tmp2 = fw[i*8 + 1];
  		OPJ_FLOAT32 tmp3 = fw[i*8 + 2];
  		OPJ_FLOAT32 tmp4 = fw[i*8 + 3];
  		fw[i*8    ] = tmp1 * c;
  		fw[i*8 + 1] = tmp2 * c;
  		fw[i*8 + 2] = tmp3 * c;
  		fw[i*8 + 3] = tmp4 * c;
  	}
  }
  
  static void opj_v4dwt_decode_step2(opj_v4_t* l, opj_v4_t* w, OPJ_INT32 k, OPJ_INT32 m, OPJ_FLOAT32 c)
  {
  	OPJ_FLOAT32* fl = (OPJ_FLOAT32*) l;
  	OPJ_FLOAT32* fw = (OPJ_FLOAT32*) w;
  	OPJ_INT32 i;
  	for(i = 0; i < m; ++i){
  		OPJ_FLOAT32 tmp1_1 = fl[0];
  		OPJ_FLOAT32 tmp1_2 = fl[1];
  		OPJ_FLOAT32 tmp1_3 = fl[2];
  		OPJ_FLOAT32 tmp1_4 = fl[3];
  		OPJ_FLOAT32 tmp2_1 = fw[-4];
  		OPJ_FLOAT32 tmp2_2 = fw[-3];
  		OPJ_FLOAT32 tmp2_3 = fw[-2];
  		OPJ_FLOAT32 tmp2_4 = fw[-1];
  		OPJ_FLOAT32 tmp3_1 = fw[0];
  		OPJ_FLOAT32 tmp3_2 = fw[1];
  		OPJ_FLOAT32 tmp3_3 = fw[2];
  		OPJ_FLOAT32 tmp3_4 = fw[3];
  		fw[-4] = tmp2_1 + ((tmp1_1 + tmp3_1) * c);
  		fw[-3] = tmp2_2 + ((tmp1_2 + tmp3_2) * c);
  		fw[-2] = tmp2_3 + ((tmp1_3 + tmp3_3) * c);
  		fw[-1] = tmp2_4 + ((tmp1_4 + tmp3_4) * c);
  		fl = fw;
  		fw += 8;
  	}
  	if(m < k){
  		OPJ_FLOAT32 c1;
  		OPJ_FLOAT32 c2;
  		OPJ_FLOAT32 c3;
  		OPJ_FLOAT32 c4;
  		c += c;
  		c1 = fl[0] * c;
  		c2 = fl[1] * c;
  		c3 = fl[2] * c;
  		c4 = fl[3] * c;
  		for(; m < k; ++m){
  			OPJ_FLOAT32 tmp1 = fw[-4];
  			OPJ_FLOAT32 tmp2 = fw[-3];
  			OPJ_FLOAT32 tmp3 = fw[-2];
  			OPJ_FLOAT32 tmp4 = fw[-1];
  			fw[-4] = tmp1 + c1;
  			fw[-3] = tmp2 + c2;
  			fw[-2] = tmp3 + c3;
  			fw[-1] = tmp4 + c4;
  			fw += 8;
  		}
  	}
  }
  
  #endif
  
  /* <summary>                             */
  /* Inverse 9-7 wavelet transform in 1-D. */
  /* </summary>                            */
  static void opj_v4dwt_decode(opj_v4dwt_t* OPJ_RESTRICT dwt)
  {
  	OPJ_INT32 a, b;
  	if(dwt->cas == 0) {
  		if(!((dwt->dn > 0) || (dwt->sn > 1))){
  			return;
  		}
  		a = 0;
  		b = 1;
  	}else{
  		if(!((dwt->sn > 0) || (dwt->dn > 1))) {
  			return;
  		}
  		a = 1;
  		b = 0;
  	}
  #ifdef __SSE__
  	opj_v4dwt_decode_step1_sse(dwt->wavelet+a, dwt->sn, _mm_set1_ps(opj_K));
  	opj_v4dwt_decode_step1_sse(dwt->wavelet+b, dwt->dn, _mm_set1_ps(opj_c13318));
  	opj_v4dwt_decode_step2_sse(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, opj_int_min(dwt->sn, dwt->dn-a), _mm_set1_ps(opj_dwt_delta));
  	opj_v4dwt_decode_step2_sse(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, opj_int_min(dwt->dn, dwt->sn-b), _mm_set1_ps(opj_dwt_gamma));
  	opj_v4dwt_decode_step2_sse(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, opj_int_min(dwt->sn, dwt->dn-a), _mm_set1_ps(opj_dwt_beta));
  	opj_v4dwt_decode_step2_sse(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, opj_int_min(dwt->dn, dwt->sn-b), _mm_set1_ps(opj_dwt_alpha));
  #else
  	opj_v4dwt_decode_step1(dwt->wavelet+a, dwt->sn, opj_K);
  	opj_v4dwt_decode_step1(dwt->wavelet+b, dwt->dn, opj_c13318);
  	opj_v4dwt_decode_step2(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, opj_int_min(dwt->sn, dwt->dn-a), opj_dwt_delta);
  	opj_v4dwt_decode_step2(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, opj_int_min(dwt->dn, dwt->sn-b), opj_dwt_gamma);
  	opj_v4dwt_decode_step2(dwt->wavelet+b, dwt->wavelet+a+1, dwt->sn, opj_int_min(dwt->sn, dwt->dn-a), opj_dwt_beta);
  	opj_v4dwt_decode_step2(dwt->wavelet+a, dwt->wavelet+b+1, dwt->dn, opj_int_min(dwt->dn, dwt->sn-b), opj_dwt_alpha);
  #endif
  }
  
  
  /* <summary>                             */
  /* Inverse 9-7 wavelet transform in 2-D. */
  /* </summary>                            */
  OPJ_BOOL opj_dwt_decode_real(opj_tcd_tilecomp_t* OPJ_RESTRICT tilec, OPJ_UINT32 numres)
  {
  	opj_v4dwt_t h;
  	opj_v4dwt_t v;
  
  	opj_tcd_resolution_t* res = tilec->resolutions;
  
  	OPJ_UINT32 rw = (OPJ_UINT32)(res->x1 - res->x0);	/* width of the resolution level computed */
  	OPJ_UINT32 rh = (OPJ_UINT32)(res->y1 - res->y0);	/* height of the resolution level computed */
  
  	OPJ_UINT32 w = (OPJ_UINT32)(tilec->x1 - tilec->x0);
  	
      size_t mr; /* max resolution */
  	
  	mr = opj_dwt_max_resolution(res, numres);
  	
  	/* overflow check */
  	if (mr > (0xFFFFFFFFU /* UINT32_MAX */ - 5U)) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  	mr += 5U;
  	
      if (mr > (SIZE_MAX / sizeof(opj_v4_t))) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  
      mr *= sizeof(opj_v4_t);
      h.wavelet = (opj_v4_t*) opj_aligned_malloc(mr);
  	if (!h.wavelet) {
  		/* FIXME event manager error callback */
  		return OPJ_FALSE;
  	}
  	v.wavelet = h.wavelet;
  
  	while( --numres) {
  		OPJ_FLOAT32 * OPJ_RESTRICT aj = (OPJ_FLOAT32*) tilec->data;
  		OPJ_UINT32 bufsize = (OPJ_UINT32)((tilec->x1 - tilec->x0) * (tilec->y1 - tilec->y0));
  		OPJ_INT32 j;
  
  		h.sn = (OPJ_INT32)rw;
  		v.sn = (OPJ_INT32)rh;
  
  		++res;
  
  		rw = (OPJ_UINT32)(res->x1 - res->x0);	/* width of the resolution level computed */
  		rh = (OPJ_UINT32)(res->y1 - res->y0);	/* height of the resolution level computed */
  
  		h.dn = (OPJ_INT32)(rw - (OPJ_UINT32)h.sn);
  		h.cas = res->x0 % 2;
  
  		for(j = (OPJ_INT32)rh; j > 3; j -= 4) {
  			OPJ_INT32 k;
  			opj_v4dwt_interleave_h(&h, aj, (OPJ_INT32)w, (OPJ_INT32)bufsize);
  			opj_v4dwt_decode(&h);
  
  			for(k = (OPJ_INT32)rw; --k >= 0;){
  				aj[k               ] = h.wavelet[k].f[0];
  				aj[k+(OPJ_INT32)w  ] = h.wavelet[k].f[1];
  				aj[k+(OPJ_INT32)w*2] = h.wavelet[k].f[2];
  				aj[k+(OPJ_INT32)w*3] = h.wavelet[k].f[3];
  			}
  
  			aj += w*4;
  			bufsize -= w*4;
  		}
  
  		if (rh & 0x03) {
  			OPJ_INT32 k;
  			j = rh & 0x03;
  			opj_v4dwt_interleave_h(&h, aj, (OPJ_INT32)w, (OPJ_INT32)bufsize);
  			opj_v4dwt_decode(&h);
  			for(k = (OPJ_INT32)rw; --k >= 0;){
  				switch(j) {
  					case 3: aj[k+(OPJ_INT32)w*2] = h.wavelet[k].f[2];
  					case 2: aj[k+(OPJ_INT32)w  ] = h.wavelet[k].f[1];
  					case 1: aj[k               ] = h.wavelet[k].f[0];
  				}
  			}
  		}
  
  		v.dn = (OPJ_INT32)(rh - (OPJ_UINT32)v.sn);
  		v.cas = res->y0 % 2;
  
  		aj = (OPJ_FLOAT32*) tilec->data;
  		for(j = (OPJ_INT32)rw; j > 3; j -= 4){
  			OPJ_UINT32 k;
  
  			opj_v4dwt_interleave_v(&v, aj, (OPJ_INT32)w, 4);
  			opj_v4dwt_decode(&v);
  
  			for(k = 0; k < rh; ++k){
  				memcpy(&aj[k*w], &v.wavelet[k], 4 * sizeof(OPJ_FLOAT32));
  			}
  			aj += 4;
  		}
  
  		if (rw & 0x03){
  			OPJ_UINT32 k;
  
  			j = rw & 0x03;
  
  			opj_v4dwt_interleave_v(&v, aj, (OPJ_INT32)w, j);
  			opj_v4dwt_decode(&v);
  
  			for(k = 0; k < rh; ++k){
  				memcpy(&aj[k*w], &v.wavelet[k], (size_t)j * sizeof(OPJ_FLOAT32));
  			}
  		}
  	}
  
  	opj_aligned_free(h.wavelet);
  	return OPJ_TRUE;
  }
  