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) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
   * Copyright (c) 2012, CS Systemes d'Information, France
   * 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
  #ifdef __SSE2__
  #include <emmintrin.h>
  #endif
  #ifdef __SSE4_1__
  #include <smmintrin.h>
  #endif
  
  #include "opj_includes.h"
  
  /* <summary> */
  /* This table contains the norms of the basis function of the reversible MCT. */
  /* </summary> */
  static const OPJ_FLOAT64 opj_mct_norms[3] = { 1.732, .8292, .8292 };
  
  /* <summary> */
  /* This table contains the norms of the basis function of the irreversible MCT. */
  /* </summary> */
  static const OPJ_FLOAT64 opj_mct_norms_real[3] = { 1.732, 1.805, 1.573 };
  
  const OPJ_FLOAT64 * opj_mct_get_mct_norms()
  {
      return opj_mct_norms;
  }
  
  const OPJ_FLOAT64 * opj_mct_get_mct_norms_real()
  {
      return opj_mct_norms_real;
  }
  
  /* <summary> */
  /* Forward reversible MCT. */
  /* </summary> */
  #ifdef __SSE2__
  void opj_mct_encode(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_SIZE_T i;
      const OPJ_SIZE_T len = n;
      /* buffer are aligned on 16 bytes */
      assert(((size_t)c0 & 0xf) == 0);
      assert(((size_t)c1 & 0xf) == 0);
      assert(((size_t)c2 & 0xf) == 0);
  
      for (i = 0; i < (len & ~3U); i += 4) {
          __m128i y, u, v;
          __m128i r = _mm_load_si128((const __m128i *) & (c0[i]));
          __m128i g = _mm_load_si128((const __m128i *) & (c1[i]));
          __m128i b = _mm_load_si128((const __m128i *) & (c2[i]));
          y = _mm_add_epi32(g, g);
          y = _mm_add_epi32(y, b);
          y = _mm_add_epi32(y, r);
          y = _mm_srai_epi32(y, 2);
          u = _mm_sub_epi32(b, g);
          v = _mm_sub_epi32(r, g);
          _mm_store_si128((__m128i *) & (c0[i]), y);
          _mm_store_si128((__m128i *) & (c1[i]), u);
          _mm_store_si128((__m128i *) & (c2[i]), v);
      }
  
      for (; i < len; ++i) {
          OPJ_INT32 r = c0[i];
          OPJ_INT32 g = c1[i];
          OPJ_INT32 b = c2[i];
          OPJ_INT32 y = (r + (g * 2) + b) >> 2;
          OPJ_INT32 u = b - g;
          OPJ_INT32 v = r - g;
          c0[i] = y;
          c1[i] = u;
          c2[i] = v;
      }
  }
  #else
  void opj_mct_encode(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_SIZE_T i;
      const OPJ_SIZE_T len = n;
  
      for (i = 0; i < len; ++i) {
          OPJ_INT32 r = c0[i];
          OPJ_INT32 g = c1[i];
          OPJ_INT32 b = c2[i];
          OPJ_INT32 y = (r + (g * 2) + b) >> 2;
          OPJ_INT32 u = b - g;
          OPJ_INT32 v = r - g;
          c0[i] = y;
          c1[i] = u;
          c2[i] = v;
      }
  }
  #endif
  
  /* <summary> */
  /* Inverse reversible MCT. */
  /* </summary> */
  #ifdef __SSE2__
  void opj_mct_decode(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_SIZE_T i;
      const OPJ_SIZE_T len = n;
  
      for (i = 0; i < (len & ~3U); i += 4) {
          __m128i r, g, b;
          __m128i y = _mm_load_si128((const __m128i *) & (c0[i]));
          __m128i u = _mm_load_si128((const __m128i *) & (c1[i]));
          __m128i v = _mm_load_si128((const __m128i *) & (c2[i]));
          g = y;
          g = _mm_sub_epi32(g, _mm_srai_epi32(_mm_add_epi32(u, v), 2));
          r = _mm_add_epi32(v, g);
          b = _mm_add_epi32(u, g);
          _mm_store_si128((__m128i *) & (c0[i]), r);
          _mm_store_si128((__m128i *) & (c1[i]), g);
          _mm_store_si128((__m128i *) & (c2[i]), b);
      }
      for (; i < len; ++i) {
          OPJ_INT32 y = c0[i];
          OPJ_INT32 u = c1[i];
          OPJ_INT32 v = c2[i];
          OPJ_INT32 g = y - ((u + v) >> 2);
          OPJ_INT32 r = v + g;
          OPJ_INT32 b = u + g;
          c0[i] = r;
          c1[i] = g;
          c2[i] = b;
      }
  }
  #else
  void opj_mct_decode(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_UINT32 i;
      for (i = 0; i < n; ++i) {
          OPJ_INT32 y = c0[i];
          OPJ_INT32 u = c1[i];
          OPJ_INT32 v = c2[i];
          OPJ_INT32 g = y - ((u + v) >> 2);
          OPJ_INT32 r = v + g;
          OPJ_INT32 b = u + g;
          c0[i] = r;
          c1[i] = g;
          c2[i] = b;
      }
  }
  #endif
  
  /* <summary> */
  /* Get norm of basis function of reversible MCT. */
  /* </summary> */
  OPJ_FLOAT64 opj_mct_getnorm(OPJ_UINT32 compno)
  {
      return opj_mct_norms[compno];
  }
  
  /* <summary> */
  /* Forward irreversible MCT. */
  /* </summary> */
  #ifdef __SSE4_1__
  void opj_mct_encode_real(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_SIZE_T i;
      const OPJ_SIZE_T len = n;
  
      const __m128i ry = _mm_set1_epi32(2449);
      const __m128i gy = _mm_set1_epi32(4809);
      const __m128i by = _mm_set1_epi32(934);
      const __m128i ru = _mm_set1_epi32(1382);
      const __m128i gu = _mm_set1_epi32(2714);
      /* const __m128i bu = _mm_set1_epi32(4096); */
      /* const __m128i rv = _mm_set1_epi32(4096); */
      const __m128i gv = _mm_set1_epi32(3430);
      const __m128i bv = _mm_set1_epi32(666);
      const __m128i mulround = _mm_shuffle_epi32(_mm_cvtsi32_si128(4096),
                               _MM_SHUFFLE(1, 0, 1, 0));
  
      for (i = 0; i < (len & ~3U); i += 4) {
          __m128i lo, hi;
          __m128i y, u, v;
          __m128i r = _mm_load_si128((const __m128i *) & (c0[i]));
          __m128i g = _mm_load_si128((const __m128i *) & (c1[i]));
          __m128i b = _mm_load_si128((const __m128i *) & (c2[i]));
  
          lo = r;
          hi = _mm_shuffle_epi32(r, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, ry);
          hi = _mm_mul_epi32(hi, ry);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          y = _mm_blend_epi16(lo, hi, 0xCC);
  
          lo = g;
          hi = _mm_shuffle_epi32(g, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, gy);
          hi = _mm_mul_epi32(hi, gy);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          y = _mm_add_epi32(y, _mm_blend_epi16(lo, hi, 0xCC));
  
          lo = b;
          hi = _mm_shuffle_epi32(b, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, by);
          hi = _mm_mul_epi32(hi, by);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          y = _mm_add_epi32(y, _mm_blend_epi16(lo, hi, 0xCC));
          _mm_store_si128((__m128i *) & (c0[i]), y);
  
          /*lo = b;
          hi = _mm_shuffle_epi32(b, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, mulround);
          hi = _mm_mul_epi32(hi, mulround);*/
          lo = _mm_cvtepi32_epi64(_mm_shuffle_epi32(b, _MM_SHUFFLE(3, 2, 2, 0)));
          hi = _mm_cvtepi32_epi64(_mm_shuffle_epi32(b, _MM_SHUFFLE(3, 2, 3, 1)));
          lo = _mm_slli_epi64(lo, 12);
          hi = _mm_slli_epi64(hi, 12);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          u = _mm_blend_epi16(lo, hi, 0xCC);
  
          lo = r;
          hi = _mm_shuffle_epi32(r, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, ru);
          hi = _mm_mul_epi32(hi, ru);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          u = _mm_sub_epi32(u, _mm_blend_epi16(lo, hi, 0xCC));
  
          lo = g;
          hi = _mm_shuffle_epi32(g, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, gu);
          hi = _mm_mul_epi32(hi, gu);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          u = _mm_sub_epi32(u, _mm_blend_epi16(lo, hi, 0xCC));
          _mm_store_si128((__m128i *) & (c1[i]), u);
  
          /*lo = r;
          hi = _mm_shuffle_epi32(r, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, mulround);
          hi = _mm_mul_epi32(hi, mulround);*/
          lo = _mm_cvtepi32_epi64(_mm_shuffle_epi32(r, _MM_SHUFFLE(3, 2, 2, 0)));
          hi = _mm_cvtepi32_epi64(_mm_shuffle_epi32(r, _MM_SHUFFLE(3, 2, 3, 1)));
          lo = _mm_slli_epi64(lo, 12);
          hi = _mm_slli_epi64(hi, 12);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          v = _mm_blend_epi16(lo, hi, 0xCC);
  
          lo = g;
          hi = _mm_shuffle_epi32(g, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, gv);
          hi = _mm_mul_epi32(hi, gv);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          v = _mm_sub_epi32(v, _mm_blend_epi16(lo, hi, 0xCC));
  
          lo = b;
          hi = _mm_shuffle_epi32(b, _MM_SHUFFLE(3, 3, 1, 1));
          lo = _mm_mul_epi32(lo, bv);
          hi = _mm_mul_epi32(hi, bv);
          lo = _mm_add_epi64(lo, mulround);
          hi = _mm_add_epi64(hi, mulround);
          lo = _mm_srli_epi64(lo, 13);
          hi = _mm_slli_epi64(hi, 32 - 13);
          v = _mm_sub_epi32(v, _mm_blend_epi16(lo, hi, 0xCC));
          _mm_store_si128((__m128i *) & (c2[i]), v);
      }
      for (; i < len; ++i) {
          OPJ_INT32 r = c0[i];
          OPJ_INT32 g = c1[i];
          OPJ_INT32 b = c2[i];
          OPJ_INT32 y =  opj_int_fix_mul(r, 2449) + opj_int_fix_mul(g,
                         4809) + opj_int_fix_mul(b, 934);
          OPJ_INT32 u = -opj_int_fix_mul(r, 1382) - opj_int_fix_mul(g,
                        2714) + opj_int_fix_mul(b, 4096);
          OPJ_INT32 v =  opj_int_fix_mul(r, 4096) - opj_int_fix_mul(g,
                         3430) - opj_int_fix_mul(b, 666);
          c0[i] = y;
          c1[i] = u;
          c2[i] = v;
      }
  }
  #else
  void opj_mct_encode_real(
      OPJ_INT32* OPJ_RESTRICT c0,
      OPJ_INT32* OPJ_RESTRICT c1,
      OPJ_INT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_UINT32 i;
      for (i = 0; i < n; ++i) {
          OPJ_INT32 r = c0[i];
          OPJ_INT32 g = c1[i];
          OPJ_INT32 b = c2[i];
          OPJ_INT32 y =  opj_int_fix_mul(r, 2449) + opj_int_fix_mul(g,
                         4809) + opj_int_fix_mul(b, 934);
          OPJ_INT32 u = -opj_int_fix_mul(r, 1382) - opj_int_fix_mul(g,
                        2714) + opj_int_fix_mul(b, 4096);
          OPJ_INT32 v =  opj_int_fix_mul(r, 4096) - opj_int_fix_mul(g,
                         3430) - opj_int_fix_mul(b, 666);
          c0[i] = y;
          c1[i] = u;
          c2[i] = v;
      }
  }
  #endif
  
  /* <summary> */
  /* Inverse irreversible MCT. */
  /* </summary> */
  void opj_mct_decode_real(
      OPJ_FLOAT32* OPJ_RESTRICT c0,
      OPJ_FLOAT32* OPJ_RESTRICT c1,
      OPJ_FLOAT32* OPJ_RESTRICT c2,
      OPJ_SIZE_T n)
  {
      OPJ_UINT32 i;
  #ifdef __SSE__
      __m128 vrv, vgu, vgv, vbu;
      vrv = _mm_set1_ps(1.402f);
      vgu = _mm_set1_ps(0.34413f);
      vgv = _mm_set1_ps(0.71414f);
      vbu = _mm_set1_ps(1.772f);
      for (i = 0; i < (n >> 3); ++i) {
          __m128 vy, vu, vv;
          __m128 vr, vg, vb;
  
          vy = _mm_load_ps(c0);
          vu = _mm_load_ps(c1);
          vv = _mm_load_ps(c2);
          vr = _mm_add_ps(vy, _mm_mul_ps(vv, vrv));
          vg = _mm_sub_ps(_mm_sub_ps(vy, _mm_mul_ps(vu, vgu)), _mm_mul_ps(vv, vgv));
          vb = _mm_add_ps(vy, _mm_mul_ps(vu, vbu));
          _mm_store_ps(c0, vr);
          _mm_store_ps(c1, vg);
          _mm_store_ps(c2, vb);
          c0 += 4;
          c1 += 4;
          c2 += 4;
  
          vy = _mm_load_ps(c0);
          vu = _mm_load_ps(c1);
          vv = _mm_load_ps(c2);
          vr = _mm_add_ps(vy, _mm_mul_ps(vv, vrv));
          vg = _mm_sub_ps(_mm_sub_ps(vy, _mm_mul_ps(vu, vgu)), _mm_mul_ps(vv, vgv));
          vb = _mm_add_ps(vy, _mm_mul_ps(vu, vbu));
          _mm_store_ps(c0, vr);
          _mm_store_ps(c1, vg);
          _mm_store_ps(c2, vb);
          c0 += 4;
          c1 += 4;
          c2 += 4;
      }
      n &= 7;
  #endif
      for (i = 0; i < n; ++i) {
          OPJ_FLOAT32 y = c0[i];
          OPJ_FLOAT32 u = c1[i];
          OPJ_FLOAT32 v = c2[i];
          OPJ_FLOAT32 r = y + (v * 1.402f);
          OPJ_FLOAT32 g = y - (u * 0.34413f) - (v * (0.71414f));
          OPJ_FLOAT32 b = y + (u * 1.772f);
          c0[i] = r;
          c1[i] = g;
          c2[i] = b;
      }
  }
  
  /* <summary> */
  /* Get norm of basis function of irreversible MCT. */
  /* </summary> */
  OPJ_FLOAT64 opj_mct_getnorm_real(OPJ_UINT32 compno)
  {
      return opj_mct_norms_real[compno];
  }
  
  
  OPJ_BOOL opj_mct_encode_custom(
      OPJ_BYTE * pCodingdata,
      OPJ_SIZE_T n,
      OPJ_BYTE ** pData,
      OPJ_UINT32 pNbComp,
      OPJ_UINT32 isSigned)
  {
      OPJ_FLOAT32 * lMct = (OPJ_FLOAT32 *) pCodingdata;
      OPJ_SIZE_T i;
      OPJ_UINT32 j;
      OPJ_UINT32 k;
      OPJ_UINT32 lNbMatCoeff = pNbComp * pNbComp;
      OPJ_INT32 * lCurrentData = 00;
      OPJ_INT32 * lCurrentMatrix = 00;
      OPJ_INT32 ** lData = (OPJ_INT32 **) pData;
      OPJ_UINT32 lMultiplicator = 1 << 13;
      OPJ_INT32 * lMctPtr;
  
      OPJ_ARG_NOT_USED(isSigned);
  
      lCurrentData = (OPJ_INT32 *) opj_malloc((pNbComp + lNbMatCoeff) * sizeof(
              OPJ_INT32));
      if (! lCurrentData) {
          return OPJ_FALSE;
      }
  
      lCurrentMatrix = lCurrentData + pNbComp;
  
      for (i = 0; i < lNbMatCoeff; ++i) {
          lCurrentMatrix[i] = (OPJ_INT32)(*(lMct++) * (OPJ_FLOAT32)lMultiplicator);
      }
  
      for (i = 0; i < n; ++i)  {
          lMctPtr = lCurrentMatrix;
          for (j = 0; j < pNbComp; ++j) {
              lCurrentData[j] = (*(lData[j]));
          }
  
          for (j = 0; j < pNbComp; ++j) {
              *(lData[j]) = 0;
              for (k = 0; k < pNbComp; ++k) {
                  *(lData[j]) += opj_int_fix_mul(*lMctPtr, lCurrentData[k]);
                  ++lMctPtr;
              }
  
              ++lData[j];
          }
      }
  
      opj_free(lCurrentData);
  
      return OPJ_TRUE;
  }
  
  OPJ_BOOL opj_mct_decode_custom(
      OPJ_BYTE * pDecodingData,
      OPJ_SIZE_T n,
      OPJ_BYTE ** pData,
      OPJ_UINT32 pNbComp,
      OPJ_UINT32 isSigned)
  {
      OPJ_FLOAT32 * lMct;
      OPJ_SIZE_T i;
      OPJ_UINT32 j;
      OPJ_UINT32 k;
  
      OPJ_FLOAT32 * lCurrentData = 00;
      OPJ_FLOAT32 * lCurrentResult = 00;
      OPJ_FLOAT32 ** lData = (OPJ_FLOAT32 **) pData;
  
      OPJ_ARG_NOT_USED(isSigned);
  
      lCurrentData = (OPJ_FLOAT32 *) opj_malloc(2 * pNbComp * sizeof(OPJ_FLOAT32));
      if (! lCurrentData) {
          return OPJ_FALSE;
      }
      lCurrentResult = lCurrentData + pNbComp;
  
      for (i = 0; i < n; ++i) {
          lMct = (OPJ_FLOAT32 *) pDecodingData;
          for (j = 0; j < pNbComp; ++j) {
              lCurrentData[j] = (OPJ_FLOAT32)(*(lData[j]));
          }
          for (j = 0; j < pNbComp; ++j) {
              lCurrentResult[j] = 0;
              for (k = 0; k < pNbComp; ++k) {
                  lCurrentResult[j] += *(lMct++) * lCurrentData[k];
              }
              *(lData[j]++) = (OPJ_FLOAT32)(lCurrentResult[j]);
          }
      }
      opj_free(lCurrentData);
      return OPJ_TRUE;
  }
  
  void opj_calculate_norms(OPJ_FLOAT64 * pNorms,
                           OPJ_UINT32 pNbComps,
                           OPJ_FLOAT32 * pMatrix)
  {
      OPJ_UINT32 i, j, lIndex;
      OPJ_FLOAT32 lCurrentValue;
      OPJ_FLOAT64 * lNorms = (OPJ_FLOAT64 *) pNorms;
      OPJ_FLOAT32 * lMatrix = (OPJ_FLOAT32 *) pMatrix;
  
      for (i = 0; i < pNbComps; ++i) {
          lNorms[i] = 0;
          lIndex = i;
  
          for (j = 0; j < pNbComps; ++j) {
              lCurrentValue = lMatrix[lIndex];
              lIndex += pNbComps;
              lNorms[i] += lCurrentValue * lCurrentValue;
          }
          lNorms[i] = sqrt(lNorms[i]);
      }
  }
  