text: /*
   * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  
  /*
   * FUNCTION
   *   Internal functions for mlib_ImageConv* on D64/F32 type and
   *   MLIB_EDGE_DST_NO_WRITE mask
   *
   */
  
  #include "mlib_image.h"
  #include "mlib_ImageConv.h"
  
  /***************************************************************/
  /*
    This define switches between functions of MLIB_DOUBLE and MLIB_FLOAT types:
    Files mlib_ImageConv_D64nw.c and mlib_ImageConv_F32nw.c
  */
  
  /* #define TYPE_DOUBLE */
  
  /***************************************************************/
  #ifdef TYPE_DOUBLE
  
  #define CONV_FUNC(KERN) mlib_conv##KERN##nw_d64
  
  #define DTYPE mlib_d64
  
  #else
  
  #define CONV_FUNC(KERN) mlib_conv##KERN##nw_f32
  
  #define DTYPE mlib_f32
  
  #endif /* TYPE_DOUBLE */
  
  /***************************************************************/
  #define GET_SRC_DST_PARAMETERS(type)                            \
    mlib_s32 hgt = mlib_ImageGetHeight(src);                      \
    mlib_s32 wid = mlib_ImageGetWidth(src);                       \
    mlib_s32 sll = mlib_ImageGetStride(src) / sizeof(type);       \
    mlib_s32 dll = mlib_ImageGetStride(dst) / sizeof(type);       \
    type*    adr_src = mlib_ImageGetData(src);                    \
    type*    adr_dst = mlib_ImageGetData(dst);                    \
    mlib_s32 chan1 = mlib_ImageGetChannels(src)
  
  /***************************************************************/
  #define DEF_VARS(type)                                          \
    GET_SRC_DST_PARAMETERS(type);                                 \
    type     *sl;                                                 \
    type     *dl, *dp = NULL;                                     \
    mlib_s32 i, j, c
  
  /***************************************************************/
  #undef  KSIZE
  #define KSIZE 2
  
  mlib_status CONV_FUNC(2x2)(mlib_image       *dst,
                             const mlib_image *src,
                             const mlib_d64   *kern,
                             mlib_s32         cmask)
  {
    DEF_VARS(DTYPE);
    DTYPE    *sp0, *sp1;
    mlib_s32 chan2 = chan1 + chan1;
    mlib_s32 chan3 = chan1 + chan2;
    mlib_s32 chan4 = chan3 + chan1;
    DTYPE k0, k1, k2, k3;
    DTYPE p00, p01, p02, p03, p04,
          p10, p11, p12, p13, p14;
  
    /* keep kernel in regs */
    k0 = (DTYPE)kern[0];  k1 = (DTYPE)kern[1];
    k2 = (DTYPE)kern[2];  k3 = (DTYPE)kern[3];
  
    wid -= (KSIZE - 1);
    hgt -= (KSIZE - 1);
  
    for (c = 0; c < chan1; c++) {
      if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
      dl = adr_dst + c;
      sl = adr_src + c;
  
      for (j = 0; j < hgt; j++) {
        dp  = dl;
        sp0 = sl;
        sp1 = sp0 + sll;
  
        p04 = sp0[0];
        p14 = sp1[0];
  
        sp0 += chan1;
        sp1 += chan1;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 4); i += 4) {
          p00 = p04; p10 = p14;
  
          p01 = sp0[0];     p11 = sp1[0];
          p02 = sp0[chan1]; p12 = sp1[chan1];
          p03 = sp0[chan2]; p13 = sp1[chan2];
          p04 = sp0[chan3]; p14 = sp1[chan3];
  
          dp[0    ] = p00 * k0 + p01 * k1 + p10 * k2 + p11 * k3;
          dp[chan1] = p01 * k0 + p02 * k1 + p11 * k2 + p12 * k3;
          dp[chan2] = p02 * k0 + p03 * k1 + p12 * k2 + p13 * k3;
          dp[chan3] = p03 * k0 + p04 * k1 + p13 * k2 + p14 * k3;
  
          dp  += chan4;
          sp0 += chan4;
          sp1 += chan4;
        }
  
        if (i < wid) {
          p00 = p04;    p10 = p14;
          p01 = sp0[0]; p11 = sp1[0];
          dp[0] = p00 * k0 + p01 * k1 + p10 * k2 + p11 * k3;
  
          if ((i + 1) < wid) {
            p02 = sp0[chan1]; p12 = sp1[chan1];
            dp[chan1] = p01 * k0 + p02 * k1 + p11 * k2 + p12 * k3;
  
            if ((i + 2) < wid) {
              p03 = sp0[chan2]; p13 = sp1[chan2];
              dp[chan2] = p02 * k0 + p03 * k1 + p12 * k2 + p13 * k3;
            }
          }
        }
  
        sl += sll;
        dl += dll;
      }
    }
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  #undef  KSIZE
  #define KSIZE 3
  
  mlib_status CONV_FUNC(3x3)(mlib_image       *dst,
                             const mlib_image *src,
                             const mlib_d64   *kern,
                             mlib_s32         cmask)
  {
    DEF_VARS(DTYPE);
    mlib_s32 chan2 = chan1 + chan1;
    DTYPE    *sp0, *sp1;
    DTYPE *sp2;
    DTYPE k0, k1, k2, k3, k4, k5, k6, k7, k8;
    DTYPE p02, p03, p12, p13, p22, p23;
  
    /* keep kernel in regs */
    k0 = (DTYPE)kern[0];  k1 = (DTYPE)kern[1];  k2 = (DTYPE)kern[2];
    k3 = (DTYPE)kern[3];  k4 = (DTYPE)kern[4];  k5 = (DTYPE)kern[5];
    k6 = (DTYPE)kern[6];  k7 = (DTYPE)kern[7];  k8 = (DTYPE)kern[8];
  
    wid -= (KSIZE - 1);
    hgt -= (KSIZE - 1);
  
    adr_dst += ((KSIZE - 1)/2)*(dll + chan1);
  
    for (c = 0; c < chan1; c++) {
      if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
      sl = adr_src + c;
      dl = adr_dst + c;
  
      for (j = 0; j < hgt; j++) {
        DTYPE s0, s1;
  
        dp  = dl;
        sp0 = sl;
        sp1 = sp0 + sll;
        sp2 = sp1 + sll;
  
        p02 = sp0[0];
        p12 = sp1[0];
        p22 = sp2[0];
  
        p03 = sp0[chan1];
        p13 = sp1[chan1];
        p23 = sp2[chan1];
  
        s0 = p02 * k0 + p03 * k1 + p12 * k3 + p13 * k4 + p22 * k6 + p23 * k7;
        s1 = p03 * k0 + p13 * k3 + p23 * k6;
  
        sp0 += chan2;
        sp1 += chan2;
        sp2 += chan2;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p02 = sp0[0];     p12 = sp1[0];     p22 = sp2[0];
          p03 = sp0[chan1]; p13 = sp1[chan1]; p23 = sp2[chan1];
  
          dp[0    ] = s0 + p02 * k2 + p12 * k5 + p22 * k8;
          dp[chan1] = s1 + p02 * k1 + p03 * k2 + p12 * k4 + p13 * k5 + p22 * k7 + p23 * k8;
  
          s0 = p02 * k0 + p03 * k1 + p12 * k3 + p13 * k4 + p22 * k6 + p23 * k7;
          s1 = p03 * k0 + p13 * k3 + p23 * k6;
  
          sp0 += chan2;
          sp1 += chan2;
          sp2 += chan2;
          dp += chan2;
        }
  
        if (wid & 1) {
          p02 = sp0[0]; p12 = sp1[0]; p22 = sp2[0];
          dp[0] = s0 + p02 * k2 + p12 * k5 + p22 * k8;
        }
  
        sl += sll;
        dl += dll;
      }
    }
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  #undef  KSIZE
  #define KSIZE 4
  
  mlib_status CONV_FUNC(4x4)(mlib_image       *dst,
                             const mlib_image *src,
                             const mlib_d64   *k,
                             mlib_s32         cmask)
  {
    DTYPE k0, k1, k2, k3, k4, k5, k6, k7;
    DTYPE p00, p01, p02, p03, p04,
          p10, p11, p12, p13, p14;
    DEF_VARS(DTYPE);
    DTYPE    *sp0, *sp1;
    mlib_s32 chan2 = chan1 + chan1;
    mlib_s32 chan3 = chan1 + chan2;
  
    wid -= (KSIZE - 1);
    hgt -= (KSIZE - 1);
  
    adr_dst += ((KSIZE - 1)/2)*(dll + chan1);
  
    for (c = 0; c < chan1; c++) {
      if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
      sl = adr_src + c;
      dl = adr_dst + c;
  
      for (j = 0; j < hgt; j++) {
        /*
         *  First loop on two first lines of kernel
         */
        sp0 = sl;
        sp1 = sp0 + sll;
        dp = dl;
  
        k0 = (DTYPE)k[0]; k1 = (DTYPE)k[1]; k2 = (DTYPE)k[2]; k3 = (DTYPE)k[3];
        k4 = (DTYPE)k[4]; k5 = (DTYPE)k[5]; k6 = (DTYPE)k[6]; k7 = (DTYPE)k[7];
  
        p02 = sp0[0];     p12 = sp1[0];
        p03 = sp0[chan1]; p13 = sp1[chan1];
        p04 = sp0[chan2]; p14 = sp1[chan2];
  
        sp0 += chan3;
        sp1 += chan3;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
  
          p03 = sp0[0];     p13 = sp1[0];
          p04 = sp0[chan1]; p14 = sp1[chan1];
  
          dp[0    ] = (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 +
                       p10 * k4 + p11 * k5 + p12 * k6 + p13 * k7);
          dp[chan1] = (p01 * k0 + p02 * k1 + p03 * k2 + p04 * k3 +
                       p11 * k4 + p12 * k5 + p13 * k6 + p14 * k7);
  
          sp0 += chan2;
          sp1 += chan2;
          dp += chan2;
        }
  
        if (wid & 1) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = sp0[0]; p13 = sp1[0];
  
          dp[0] = (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 +
                   p10 * k4 + p11 * k5 + p12 * k6 + p13 * k7);
        }
  
        /*
         *  Second loop on two last lines of kernel
         */
        sp0 = sl + 2*sll;
        sp1 = sp0 + sll;
        dp = dl;
  
        k0 = (DTYPE)k[ 8]; k1 = (DTYPE)k[ 9]; k2 = (DTYPE)k[10]; k3 = (DTYPE)k[11];
        k4 = (DTYPE)k[12]; k5 = (DTYPE)k[13]; k6 = (DTYPE)k[14]; k7 = (DTYPE)k[15];
  
        p02 = sp0[0];     p12 = sp1[0];
        p03 = sp0[chan1]; p13 = sp1[chan1];
        p04 = sp0[chan2]; p14 = sp1[chan2];
  
        sp0 += chan3;
        sp1 += chan3;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
  
          p03 = sp0[0];     p13 = sp1[0];
          p04 = sp0[chan1]; p14 = sp1[chan1];
  
          dp[0    ] += (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 +
                        p10 * k4 + p11 * k5 + p12 * k6 + p13 * k7);
          dp[chan1] += (p01 * k0 + p02 * k1 + p03 * k2 + p04 * k3 +
                        p11 * k4 + p12 * k5 + p13 * k6 + p14 * k7);
  
          sp0 += chan2;
          sp1 += chan2;
          dp += chan2;
        }
  
        if (wid & 1) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = sp0[0]; p13 = sp1[0];
  
          dp[0] += (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 +
                    p10 * k4 + p11 * k5 + p12 * k6 + p13 * k7);
        }
  
        /* next line */
        sl += sll;
        dl += dll;
      }
    }
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  #undef  KSIZE
  #define KSIZE 5
  
  mlib_status CONV_FUNC(5x5)(mlib_image       *dst,
                             const mlib_image *src,
                             const mlib_d64   *k,
                             mlib_s32         cmask)
  {
    DTYPE k0, k1, k2, k3, k4, k5, k6, k7, k8, k9;
    DTYPE p00, p01, p02, p03, p04, p05,
          p10, p11, p12, p13, p14, p15;
    DEF_VARS(DTYPE);
    DTYPE    *sp0, *sp1;
    mlib_s32 chan2 = chan1 + chan1;
    mlib_s32 chan3 = chan1 + chan2;
    mlib_s32 chan4 = chan3 + chan1;
  
    wid -= (KSIZE - 1);
    hgt -= (KSIZE - 1);
  
    adr_dst += ((KSIZE - 1)/2)*(dll + chan1);
  
    for (c = 0; c < chan1; c++) {
      if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
      sl = adr_src + c;
      dl = adr_dst + c;
  
      for (j = 0; j < hgt; j++) {
        /*
         *  First loop
         */
        sp0 = sl;
        sp1 = sp0 + sll;
        dp = dl;
  
        k0 = (DTYPE)k[0]; k1 = (DTYPE)k[1]; k2 = (DTYPE)k[2]; k3 = (DTYPE)k[3]; k4 = (DTYPE)k[4];
        k5 = (DTYPE)k[5]; k6 = (DTYPE)k[6]; k7 = (DTYPE)k[7]; k8 = (DTYPE)k[8]; k9 = (DTYPE)k[9];
  
        p02 = sp0[0];     p12 = sp1[0];
        p03 = sp0[chan1]; p13 = sp1[chan1];
        p04 = sp0[chan2]; p14 = sp1[chan2];
        p05 = sp0[chan3]; p15 = sp1[chan3];
  
        sp0 += chan4;
        sp1 += chan4;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = p05; p13 = p15;
  
          p04 = sp0[0];     p14 = sp1[0];
          p05 = sp0[chan1]; p15 = sp1[chan1];
  
          dp[    0] = (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4 +
                       p10 * k5 + p11 * k6 + p12 * k7 + p13 * k8 + p14 * k9);
          dp[chan1] = (p01 * k0 + p02 * k1 + p03 * k2 + p04 * k3 + p05 * k4 +
                       p11 * k5 + p12 * k6 + p13 * k7 + p14 * k8 + p15 * k9);
  
          sp0 += chan2;
          sp1 += chan2;
          dp += chan2;
        }
  
        if (wid & 1) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = p05; p13 = p15;
  
          p04 = sp0[0];     p14 = sp1[0];
  
          dp[0] = (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4 +
                   p10 * k5 + p11 * k6 + p12 * k7 + p13 * k8 + p14 * k9);
        }
  
        /*
         *  Second loop
         */
        sp0 = sl + 2*sll;
        sp1 = sp0 + sll;
        dp = dl;
  
        k0 = (DTYPE)k[10]; k1 = (DTYPE)k[11]; k2 = (DTYPE)k[12]; k3 = (DTYPE)k[13]; k4 = (DTYPE)k[14];
        k5 = (DTYPE)k[15]; k6 = (DTYPE)k[16]; k7 = (DTYPE)k[17]; k8 = (DTYPE)k[18]; k9 = (DTYPE)k[19];
  
        p02 = sp0[0];     p12 = sp1[0];
        p03 = sp0[chan1]; p13 = sp1[chan1];
        p04 = sp0[chan2]; p14 = sp1[chan2];
        p05 = sp0[chan3]; p15 = sp1[chan3];
  
        sp0 += chan4;
        sp1 += chan4;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = p05; p13 = p15;
  
          p04 = sp0[0];     p14 = sp1[0];
          p05 = sp0[chan1]; p15 = sp1[chan1];
  
          dp[    0] += (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4 +
                        p10 * k5 + p11 * k6 + p12 * k7 + p13 * k8 + p14 * k9);
          dp[chan1] += (p01 * k0 + p02 * k1 + p03 * k2 + p04 * k3 + p05 * k4 +
                        p11 * k5 + p12 * k6 + p13 * k7 + p14 * k8 + p15 * k9);
  
          sp0 += chan2;
          sp1 += chan2;
          dp += chan2;
        }
  
        if (wid & 1) {
          p00 = p02; p10 = p12;
          p01 = p03; p11 = p13;
          p02 = p04; p12 = p14;
          p03 = p05; p13 = p15;
  
          p04 = sp0[0];     p14 = sp1[0];
  
          dp[0] += (p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4 +
                    p10 * k5 + p11 * k6 + p12 * k7 + p13 * k8 + p14 * k9);
        }
  
        /*
         *  3 loop
         */
        dp = dl;
        sp0 = sl + 4*sll;
  
        k0 = (DTYPE)k[20]; k1 = (DTYPE)k[21]; k2 = (DTYPE)k[22]; k3 = (DTYPE)k[23]; k4 = (DTYPE)k[24];
  
        p02 = sp0[0];
        p03 = sp0[chan1];
        p04 = sp0[chan2];
        p05 = sp0[chan3];
  
        sp0 += chan2 + chan2;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (i = 0; i <= (wid - 2); i += 2) {
          p00 = p02; p01 = p03; p02 = p04; p03 = p05;
  
          p04 = sp0[0]; p05 = sp0[chan1];
  
          dp[0    ] += p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4;
          dp[chan1] += p01 * k0 + p02 * k1 + p03 * k2 + p04 * k3 + p05 * k4;
  
          dp  += chan2;
          sp0 += chan2;
        }
  
        if (wid & 1) {
          p00 = p02; p01 = p03; p02 = p04; p03 = p05;
  
          p04 = sp0[0];
  
          dp[0] += p00 * k0 + p01 * k1 + p02 * k2 + p03 * k3 + p04 * k4;
        }
  
        /* next line */
        sl += sll;
        dl += dll;
      }
    }
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  #define BUFF_SIZE  1600
  
  #define CACHE_SIZE (64*1024)
  
  static mlib_status mlib_ImageConv1xN(mlib_image       *dst,
                                       const mlib_image *src,
                                       const DTYPE      *k,
                                       mlib_s32         n,
                                       mlib_s32         dn,
                                       mlib_s32         cmask)
  {
    DTYPE    buff[BUFF_SIZE], *pbuff = buff;
    const DTYPE    *pk;
    DTYPE    k0, k1, k2, k3;
    DTYPE    p0, p1, p2, p3, p4;
    DTYPE    *sp, *sl_c, *dl_c, *sl0;
    DEF_VARS(DTYPE);
    mlib_s32 off, kh;
    mlib_s32 l, hsize, max_hsize;
  
    hgt -= (n - 1);
    adr_dst += dn*dll;
  
    max_hsize = (CACHE_SIZE/sizeof(DTYPE))/sll;
  
    if (!max_hsize) max_hsize = 1;
  
    if (max_hsize > BUFF_SIZE) {
      pbuff = mlib_malloc(sizeof(DTYPE)*max_hsize);
    }
  
    sl_c = adr_src;
    dl_c = adr_dst;
  
    for (l = 0; l < hgt; l += hsize) {
      hsize = hgt - l;
  
      if (hsize > max_hsize) hsize = max_hsize;
  
      for (c = 0; c < chan1; c++) {
        if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
        sl = sl_c + c;
        dl = dl_c + c;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
        for (j = 0; j < hsize; j++) pbuff[j] = 0.0;
  
        for (i = 0; i < wid; i++) {
          sl0 = sl;
  
          for (off = 0; off < (n - 4); off += 4) {
            pk = k + off;
            sp = sl0;
  
            k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
            p2 = sp[0]; p3 = sp[sll]; p4 = sp[2*sll];
            sp += 3*sll;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
            for (j = 0; j < hsize; j += 2) {
              p0 = p2; p1 = p3; p2 = p4;
              p3 = sp[0];
              p4 = sp[sll];
  
              pbuff[j    ] += p0*k0 + p1*k1 + p2*k2 + p3*k3;
              pbuff[j + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3;
  
              sp += 2*sll;
            }
  
            sl0 += 4*sll;
          }
  
          pk = k + off;
          sp = sl0;
  
          k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
          p2 = sp[0]; p3 = sp[sll]; p4 = sp[2*sll];
  
          dp = dl;
          kh = n - off;
  
          if (kh == 4) {
            sp += 3*sll;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
            for (j = 0; j <= (hsize - 2); j += 2) {
              p0 = p2; p1 = p3; p2 = p4;
              p3 = sp[0];
              p4 = sp[sll];
  
              dp[0  ] = p0*k0 + p1*k1 + p2*k2 + p3*k3 + pbuff[j];
              dp[dll] = p1*k0 + p2*k1 + p3*k2 + p4*k3 + pbuff[j + 1];
  
              pbuff[j] = 0;
              pbuff[j + 1] = 0;
  
              sp += 2*sll;
              dp += 2*dll;
            }
  
            if (j < hsize) {
              p0 = p2; p1 = p3; p2 = p4;
              p3 = sp[0];
  
              dp[0] = p0*k0 + p1*k1 + p2*k2 + p3*k3 + pbuff[j];
  
              pbuff[j] = 0;
            }
  
          } else if (kh == 3) {
            sp += 2*sll;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
            for (j = 0; j <= (hsize - 2); j += 2) {
              p0 = p2; p1 = p3;
              p2 = sp[0];
              p3 = sp[sll];
  
              dp[0  ] = p0*k0 + p1*k1 + p2*k2 + pbuff[j];
              dp[dll] = p1*k0 + p2*k1 + p3*k2 + pbuff[j + 1];
  
              pbuff[j] = 0;
              pbuff[j + 1] = 0;
  
              sp += 2*sll;
              dp += 2*dll;
            }
  
            if (j < hsize) {
              p0 = p2; p1 = p3;
              p2 = sp[0];
  
              dp[0] = p0*k0 + p1*k1 + p2*k2 + pbuff[j];
  
              pbuff[j] = 0;
            }
  
          } else if (kh == 2) {
            sp += sll;
  
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
            for (j = 0; j <= (hsize - 2); j += 2) {
              p0 = p2;
              p1 = sp[0];
              p2 = sp[sll];
  
              dp[0  ] = p0*k0 + p1*k1 + pbuff[j];
              dp[dll] = p1*k0 + p2*k1 + pbuff[j + 1];
  
              pbuff[j] = 0;
              pbuff[j + 1] = 0;
  
              sp += 2*sll;
              dp += 2*dll;
            }
  
            if (j < hsize) {
              p0 = p2;
              p1 = sp[0];
  
              dp[0] = p0*k0 + p1*k1 + pbuff[j];
  
              pbuff[j] = 0;
            }
  
          } else /* if (kh == 1) */ {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
            for (j = 0; j < hsize; j++) {
              p0 = sp[0];
  
              dp[0] = p0*k0 + pbuff[j];
  
              pbuff[j] = 0;
  
              sp += sll;
              dp += dll;
            }
          }
  
          sl += chan1;
          dl += chan1;
        }
      }
  
      sl_c += max_hsize*sll;
      dl_c += max_hsize*dll;
    }
  
    if (pbuff != buff) mlib_free(pbuff);
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  #define MAX_KER 7
  #define MAX_NM  81
  
  mlib_status CONV_FUNC(MxN)(mlib_image       *dst,
                             const mlib_image *src,
                             const mlib_d64   *ker,
                             mlib_s32         m,
                             mlib_s32         n,
                             mlib_s32         dm,
                             mlib_s32         dn,
                             mlib_s32         cmask)
  {
    DTYPE k0, k1, k2, k3, k4, k5, k6, *sp;
    DTYPE p0, p1, p2, p3, p4, p5, p6, p7;
    mlib_s32 l, off, kw;
    DEF_VARS(DTYPE);
    mlib_s32 chan2 = chan1 + chan1;
    mlib_s32 chan3 = chan1 + chan2;
  
  #ifdef TYPE_DOUBLE
    const mlib_d64 *k = ker;
  #else
    mlib_f32 k_arr[MAX_NM], *k = k_arr;
  
    if (n*m > MAX_NM) {
      k = mlib_malloc(n*m*sizeof(mlib_f32));
  
      if (k == NULL) return MLIB_FAILURE;
    }
  
    for (i = 0; i < n*m; i++) k[i] = (mlib_f32)ker[i];
  #endif /* TYPE_DOUBLE */
  
    if (m == 1) return mlib_ImageConv1xN(dst, src, k, n, dn, cmask);
  
    wid -= (m - 1);
    hgt -= (n - 1);
    adr_dst += dn*dll + dm*chan1;
  
    for (c = 0; c < chan1; c++) {
      if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
  
      sl = adr_src + c;
      dl = adr_dst + c;
  
      for (j = 0; j < hgt; j++) {
        const DTYPE *pk = k;
  
        for (l = 0; l < n; l++) {
          DTYPE *sp0 = sl + l*sll;
  
          for (off = 0; off < m; off += kw, pk += kw, sp0 += chan1) {
            kw = m - off;
  
            if (kw > 2*MAX_KER) kw = MAX_KER; else
              if (kw > MAX_KER) kw = kw/2;
  
            p2 = sp0[0]; p3 = sp0[chan1]; p4 = sp0[chan2];
            sp0 += chan3;
            p5 = sp0[0]; p6 = sp0[chan1]; p7 = sp0[chan2];
  
            k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
            k4 = pk[4]; k5 = pk[5]; k6 = pk[6];
  
            dp = dl;
  
            if (kw == 7) {
              sp = sp0 += chan3;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
  
                  p5 = sp[- chan1]; p6 = sp[0]; p7 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6;
                  dp[chan1] = p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
  
                  p5 = sp[- chan1]; p6 = sp[0]; p7 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6;
                  dp[chan1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
  
            } else if (kw == 6) {
              sp = sp0 += chan2;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
  
                  p5 = sp[0]; p6 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5;
                  dp[chan1] = p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
  
                  p5 = sp[0]; p6 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5;
                  dp[chan1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
  
            } else if (kw == 5) {
              sp = sp0 += chan1;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5;
  
                  p4 = sp[0]; p5 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4;
                  dp[chan1] = p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4; p3 = p5;
  
                  p4 = sp[0]; p5 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4;
                  dp[chan1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
  
            } else if (kw == 4) {
  
              sp = sp0;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4;
  
                  p3 = sp[0]; p4 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1 + p2*k2 + p3*k3;
                  dp[chan1] = p1*k0 + p2*k1 + p3*k2 + p4*k3;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3; p2 = p4;
  
                  p3 = sp[0]; p4 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1 + p2*k2 + p3*k3;
                  dp[chan1] += p1*k0 + p2*k1 + p3*k2 + p4*k3;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
  
            } else if (kw == 3) {
              sp = sp0 -= chan1;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3;
  
                  p2 = sp[0]; p3 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1 + p2*k2;
                  dp[chan1] = p1*k0 + p2*k1 + p3*k2;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2; p1 = p3;
  
                  p2 = sp[0]; p3 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1 + p2*k2;
                  dp[chan1] += p1*k0 + p2*k1 + p3*k2;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
  
            } else { /* kw == 2 */
              sp = sp0 -= chan2;
  
              if (pk == k) {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2;
  
                  p1 = sp[0]; p2 = sp[chan1];
  
                  dp[0    ] = p0*k0 + p1*k1;
                  dp[chan1] = p1*k0 + p2*k1;
  
                  sp += chan2;
                  dp += chan2;
                }
  
              } else {
  #ifdef __SUNPRO_C
  #pragma pipeloop(0)
  #endif /* __SUNPRO_C */
                for (i = 0; i <= (wid - 2); i += 2) {
                  p0 = p2;
  
                  p1 = sp[0]; p2 = sp[chan1];
  
                  dp[0    ] += p0*k0 + p1*k1;
                  dp[chan1] += p1*k0 + p2*k1;
  
                  sp += chan2;
                  dp += chan2;
                }
              }
            }
          }
        }
  
        /* last pixels */
  
        if (wid & 1) {
          DTYPE *sp0 = sl + i*chan1, s = 0;
          const DTYPE *pk = k;
          mlib_s32 x;
  
          for (l = 0; l < n; l++) {
            DTYPE *sp = sp0 + l*sll;
  
            for (x = 0; x < m; x++) s += sp[x*chan1] * (*pk++);
          }
  
          dp[0] = s;
        }
  
        /* next line */
        sl += sll;
        dl += dll;
      }
    }
  
  #ifndef TYPE_DOUBLE
  
    if (k != k_arr) mlib_free(k);
  #endif /* TYPE_DOUBLE */
  
    return MLIB_SUCCESS;
  }
  
  /***************************************************************/
  