/*
 * Copyright (c) 1998, 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
 *      mlib_ImageAffineEdgeZero - implementation of MLIB_EDGE_DST_FILL_ZERO
 *                                 edge condition
 *      mlib_ImageAffineEdgeNearest - implementation of MLIB_EDGE_OP_NEAREST
 *                                    edge condition
 *      void mlib_ImageAffineEdgeExtend_BL - implementation of MLIB_EDGE_SRC_EXTEND
 *                                           edge condition for MLIB_BILINEAR filter
 *      void mlib_ImageAffineEdgeExtend_BC - implementation of MLIB_EDGE_SRC_EXTEND
 *                                           edge condition for MLIB_BICUBIC filter
 *      void mlib_ImageAffineEdgeExtend_BC2 - implementation of MLIB_EDGE_SRC_EXTEND
 *                                            edge condition for MLIB_BICUBIC2 filter
 *
 * DESCRIPTION
 *      mlib_ImageAffineEdgeZero:
 *         This function fills the edge pixels (i.e. thouse one which can not
 *         be interpolated with given resampling filter because their prototypes
 *         in the source image lie too close to the border) in the destination
 *         image with zeroes.
 *
 *      mlib_ImageAffineEdgeNearest:
 *         This function fills the edge pixels (i.e. thouse one which can not
 *         be interpolated with given resampling filter because their prototypes
 *         in the source image lie too close to the border) in the destination
 *         image according to the nearest neighbour interpolation.
 *
 *      mlib_ImageAffineEdgeExtend_BL:
 *         This function fills the edge pixels (i.e. thouse one which can not
 *         be interpolated with given resampling filter because their prototypes
 *         in the source image lie too close to the border) in the destination
 *         image according to the bilinear interpolation with border pixels extend
 *         of source image.
 *
 *      mlib_ImageAffineEdgeExtend_BC:
 *         This function fills the edge pixels (i.e. thouse one which can not
 *         be interpolated with given resampling filter because their prototypes
 *         in the source image lie too close to the border) in the destination
 *         image according to the bicubic interpolation with border pixels extend
 *         of source image.
 *
 *      mlib_ImageAffineEdgeExtend_BC2:
 *         This function fills the edge pixels (i.e. thouse one which can not
 *         be interpolated with given resampling filter because their prototypes
 *         in the source image lie too close to the border) in the destination
 *         image according to the bicubic2 interpolation with border pixels extend
 *         of source image.
 */

#include "mlib_image.h"
#include "mlib_ImageColormap.h"
#include "mlib_ImageAffine.h"

/***************************************************************/
#define FLT_SHIFT_U8  4
#define FLT_MASK_U8   (((1 << 8) - 1) << 4)
#define FLT_SHIFT_S16 3
#define FLT_MASK_S16  (((1 << 9) - 1) << 4)

#define MLIB_SIGN_SHIFT 31

/***************************************************************/
#define D64mlib_u8(X)   mlib_U82D64[X]
#define D64mlib_s16(X)  ((mlib_d64)(X))
#define D64mlib_u16(X)  ((mlib_d64)(X))
#define D64mlib_s32(X)  ((mlib_d64)(X))
#define D64mlib_f32(X)  ((mlib_d64)(X))
#define D64mlib_d64(X)  ((mlib_d64)(X))

/***************************************************************/
#ifdef MLIB_USE_FTOI_CLAMPING

#define SATmlib_u8(DST, val0)                                   \
  DST = ((mlib_s32)(val0 - sat) >> 24) ^ 0x80

#define SATmlib_s16(DST, val0)                                  \
  DST = ((mlib_s32)val0) >> 16

#define SATmlib_u16(DST, val0)                                  \
  DST = ((mlib_s32)(val0 - sat) >> 16) ^ 0x8000

#define SATmlib_s32(DST, val0)                                  \
  DST = val0

#else

#define SATmlib_u8(DST, val0)                                   \
  val0 -= sat;                                                  \
  if (val0 >= MLIB_S32_MAX)                                     \
    val0 = MLIB_S32_MAX;                                        \
  if (val0 <= MLIB_S32_MIN)                                     \
    val0 = MLIB_S32_MIN;                                        \
  DST = ((mlib_s32) val0 >> 24) ^ 0x80

#define SATmlib_s16(DST, val0)                                  \
  if (val0 >= MLIB_S32_MAX)                                     \
    val0 = MLIB_S32_MAX;                                        \
  if (val0 <= MLIB_S32_MIN)                                     \
    val0 = MLIB_S32_MIN;                                        \
  DST = (mlib_s32)val0 >> 16

#define SATmlib_u16(DST, val0)                                  \
  val0 -= sat;                                                  \
  if (val0 >= MLIB_S32_MAX)                                     \
    val0 = MLIB_S32_MAX;                                        \
  if (val0 <= MLIB_S32_MIN)                                     \
    val0 = MLIB_S32_MIN;                                        \
  DST = ((mlib_s32)val0 >> 16) ^ 0x8000

#define SATmlib_s32(DST, val0)                                  \
  if (val0 >= MLIB_S32_MAX)                                     \
    val0 = MLIB_S32_MAX;                                        \
  if (val0 <= MLIB_S32_MIN)                                     \
    val0 = MLIB_S32_MIN;                                        \
  DST = (mlib_s32)val0

#endif

/***************************************************************/
#define SATmlib_f32(DST, val0)                                  \
  DST = (mlib_f32)val0

/***************************************************************/
#define SATmlib_d64(DST, val0)                                  \
  DST = val0

/***************************************************************/
#define MLIB_EDGE_ZERO_LINE(TYPE, Left, Right)                  \
  dp = (TYPE*)data + channels * Left;                           \
  dstLineEnd  = (TYPE*)data + channels * Right;                 \
                                                                \
  for (; dp < dstLineEnd; dp++) {                               \
    *dp = zero;                                                 \
  }

/***************************************************************/
#define MLIB_EDGE_NEAREST_LINE(TYPE, Left, Right)               \
  dp = (TYPE*)data + channels * Left;                           \
  size = Right - Left;                                          \
                                                                \
  for (j = 0; j < size; j++) {                                  \
    ySrc = Y >> MLIB_SHIFT;                                     \
    xSrc = X >> MLIB_SHIFT;                                     \
    sp = (TYPE*)lineAddr[ySrc] + xSrc * channels;               \
                                                                \
    for (k = 0; k < channels; k++) dp[k] = sp[k];               \
                                                                \
    Y += dY;                                                    \
    X += dX;                                                    \
    dp += channels;                                             \
  }

/***************************************************************/
#define MLIB_EDGE_BL(TYPE, Left, Right)                                 \
  dp = (TYPE*)data + channels * Left;                                   \
  size = Right - Left;                                                  \
                                                                        \
  for (j = 0; j < size; j++) {                                          \
    ySrc = ((Y - 32768) >> MLIB_SHIFT);                                 \
    xSrc = ((X - 32768) >> MLIB_SHIFT);                                 \
                                                                        \
    t = ((X - 32768) & MLIB_MASK) * scale;                              \
    u = ((Y - 32768) & MLIB_MASK) * scale;                              \
                                                                        \
    xDelta = (((xSrc + 1 - srcWidth )) >> MLIB_SIGN_SHIFT) & channels;  \
    yDelta = (((ySrc + 1 - srcHeight)) >> MLIB_SIGN_SHIFT) & srcStride; \
                                                                        \
    xFlag = (xSrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                   \
    xSrc = xSrc + (1 & xFlag);                                          \
    xDelta = xDelta &~ xFlag;                                           \
                                                                        \
    yFlag = (ySrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                   \
    ySrc = ySrc + (1 & yFlag);                                          \
    yDelta = yDelta &~ yFlag;                                           \
                                                                        \
    sp = (TYPE*)lineAddr[ySrc] + xSrc * channels;                       \
                                                                        \
    for (k = 0; k < channels; k++) {                                    \
      a00  = D64##TYPE(sp[0]);                                          \
      a01  = D64##TYPE(sp[xDelta]);                                     \
      a10  = D64##TYPE(sp[yDelta]);                                     \
      a11  = D64##TYPE(sp[yDelta + xDelta]);                            \
      pix0 = (a00 * (1 - t) + a01 * t) * (1 - u) +                      \
             (a10 * (1 - t) + a11 * t) * u;                             \
                                                                        \
      dp[k] = (TYPE)pix0;                                               \
      sp++;                                                             \
    }                                                                   \
                                                                        \
    X += dX;                                                            \
    Y += dY;                                                            \
    dp += channels;                                                     \
  }

/***************************************************************/
#define LUT(k, ind) plut[channels*sp[ind] + k]

/***************************************************************/
#define MLIB_EDGE_INDEX(ITYPE, DTYPE, size)                             \
  for (j = 0; j < size; j++) {                                          \
    ySrc = ((Y - 32768) >> MLIB_SHIFT);                                 \
    xSrc = ((X - 32768) >> MLIB_SHIFT);                                 \
                                                                        \
    t = ((X - 32768) & MLIB_MASK) * scale;                              \
    u = ((Y - 32768) & MLIB_MASK) * scale;                              \
                                                                        \
    xDelta = (((xSrc + 1 - srcWidth )) >> MLIB_SIGN_SHIFT) & 1;         \
    yDelta = (((ySrc + 1 - srcHeight)) >> MLIB_SIGN_SHIFT) & srcStride; \
                                                                        \
    xFlag = (xSrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                   \
    xSrc = xSrc + (1 & xFlag);                                          \
    xDelta = xDelta &~ xFlag;                                           \
                                                                        \
    yFlag = (ySrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                   \
    ySrc = ySrc + (1 & yFlag);                                          \
    yDelta = yDelta &~ yFlag;                                           \
                                                                        \
    sp = (ITYPE*)lineAddr[ySrc] + xSrc;                                 \
                                                                        \
    for (k = 0; k < channels; k++) {                                    \
      a00  = LUT(k, 0);                                                 \
      a01  = LUT(k, xDelta);                                            \
      a10  = LUT(k, yDelta);                                            \
      a11  = LUT(k, yDelta + xDelta);                                   \
      pix0 = (a00 * (1 - t) + a01 * t) * (1 - u) +                      \
             (a10 * (1 - t) + a11 * t) * u;                             \
                                                                        \
      pbuff[k] = (mlib_s32)pix0;                                        \
    }                                                                   \
    pbuff += channels;                                                  \
                                                                        \
    X += dX;                                                            \
    Y += dY;                                                            \
  }

/***************************************************************/
#define MLIB_EDGE_INDEX_u8i(ITYPE, Left, Right) {                              \
  mlib_u8  *pbuff = buff;                                                      \
                                                                               \
  size = Right - Left;                                                         \
                                                                               \
  MLIB_EDGE_INDEX(ITYPE, mlib_u8, size);                                       \
                                                                               \
  dp = (ITYPE*)data + Left;                                                    \
                                                                               \
  if (channels == 3) {                                                         \
    if (sizeof(ITYPE) == 1) {                                                  \
      mlib_ImageColorTrue2IndexLine_U8_U8_3 (buff, (void*)dp, size, colormap); \
    } else {                                                                   \
      mlib_ImageColorTrue2IndexLine_U8_S16_3(buff, (void*)dp, size, colormap); \
    }                                                                          \
  } else {                                                                     \
    if (sizeof(ITYPE) == 1) {                                                  \
      mlib_ImageColorTrue2IndexLine_U8_U8_4 (buff, (void*)dp, size, colormap); \
    } else {                                                                   \
      mlib_ImageColorTrue2IndexLine_U8_S16_4(buff, (void*)dp, size, colormap); \
    }                                                                          \
  }                                                                            \
}

/***************************************************************/
#define MLIB_EDGE_INDEX_s16i(ITYPE, Left, Right) {                              \
  mlib_s16 *pbuff = buff;                                                       \
                                                                                \
  size = Right - Left;                                                          \
                                                                                \
  MLIB_EDGE_INDEX(ITYPE, mlib_s16, size);                                       \
                                                                                \
  dp = (ITYPE*)data + Left;                                                     \
                                                                                \
  if (channels == 3) {                                                          \
    if (sizeof(ITYPE) == 1) {                                                   \
      mlib_ImageColorTrue2IndexLine_S16_U8_3 (buff, (void*)dp, size, colormap); \
    } else {                                                                    \
      mlib_ImageColorTrue2IndexLine_S16_S16_3(buff, (void*)dp, size, colormap); \
    }                                                                           \
  } else {                                                                      \
    if (sizeof(ITYPE) == 1) {                                                   \
      mlib_ImageColorTrue2IndexLine_S16_U8_4 (buff, (void*)dp, size, colormap); \
    } else {                                                                    \
      mlib_ImageColorTrue2IndexLine_S16_S16_4(buff, (void*)dp, size, colormap); \
    }                                                                           \
  }                                                                             \
}

/***************************************************************/
#define GET_FLT_TBL(X, xf0, xf1, xf2, xf3)                      \
  filterpos = ((X - 32768) >> flt_shift) & flt_mask;            \
  fptr = (mlib_f32 *) ((mlib_u8 *)flt_tbl + filterpos);         \
                                                                \
  xf0 = fptr[0];                                                \
  xf1 = fptr[1];                                                \
  xf2 = fptr[2];                                                \
  xf3 = fptr[3]

/***************************************************************/
#define GET_FLT_BC(X, xf0, xf1, xf2, xf3)                       \
  dx = ((X - 32768) & MLIB_MASK) * scale;                       \
  dx_2  = 0.5 * dx;                                             \
  dx2   = dx * dx;                                              \
  dx3_2 = dx_2 * dx2;                                           \
  dx3_3 = 3.0 * dx3_2;                                          \
                                                                \
  xf0 = dx2 - dx3_2 - dx_2;                                     \
  xf1 = dx3_3 - 2.5 * dx2 + 1.0;                                \
  xf2 = 2.0 * dx2 - dx3_3 + dx_2;                               \
  xf3 = dx3_2 - 0.5 * dx2

/***************************************************************/
#define GET_FLT_BC2(X, xf0, xf1, xf2, xf3)                      \
  dx =  ((X - 32768) & MLIB_MASK) * scale;                      \
  dx2   = dx  * dx;                                             \
  dx3_2 = dx  * dx2;                                            \
  dx3_3 = 2.0 * dx2;                                            \
                                                                \
  xf0 = - dx3_2 + dx3_3 - dx;                                   \
  xf1 =   dx3_2 - dx3_3 + 1.0;                                  \
  xf2 = - dx3_2 + dx2   + dx;                                   \
  xf3 =   dx3_2 - dx2

/***************************************************************/
#define CALC_SRC_POS(X, Y, channels, srcStride)                                    \
  xSrc = ((X - 32768) >> MLIB_SHIFT);                                              \
  ySrc = ((Y - 32768) >> MLIB_SHIFT);                                              \
                                                                                   \
  xDelta0 = ((~((xSrc - 1) >> MLIB_SIGN_SHIFT)) & (- channels));                   \
  yDelta0 = ((~((ySrc - 1) >> MLIB_SIGN_SHIFT)) & (- srcStride));                  \
  xDelta1 = ((xSrc + 1 - srcWidth) >> MLIB_SIGN_SHIFT) & (channels);               \
  yDelta1 = ((ySrc + 1 - srcHeight) >> MLIB_SIGN_SHIFT) & (srcStride);             \
  xDelta2 = xDelta1 + (((xSrc + 2 - srcWidth) >> MLIB_SIGN_SHIFT) & (channels));   \
  yDelta2 = yDelta1 + (((ySrc + 2 - srcHeight) >> MLIB_SIGN_SHIFT) & (srcStride)); \
                                                                                   \
  xFlag = (xSrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                                \
  xSrc = xSrc + (1 & xFlag);                                                       \
  xDelta2 -= (xDelta1 & xFlag);                                                    \
  xDelta1 = (xDelta1 &~ xFlag);                                                    \
                                                                                   \
  yFlag = (ySrc >> (MLIB_SIGN_SHIFT - MLIB_SHIFT));                                \
  ySrc = ySrc + (1 & yFlag);                                                       \
  yDelta2  -= (yDelta1 & yFlag);                                                   \
  yDelta1 = yDelta1 &~ yFlag

/***************************************************************/
#define MLIB_EDGE_BC_LINE(TYPE, Left, Right, GET_FILTER)        \
  dp = (TYPE*)data + channels * Left;                           \
  size = Right - Left;                                          \
                                                                \
  for (j = 0; j < size; j++) {                                  \
    GET_FILTER(X, xf0, xf1, xf2, xf3);                          \
    GET_FILTER(Y, yf0, yf1, yf2, yf3);                          \
                                                                \
    CALC_SRC_POS(X, Y, channels, srcStride);                    \
                                                                \
    sp = (TYPE*)lineAddr[ySrc] + channels*xSrc;                 \
                                                                \
    for (k = 0; k < channels; k++) {                            \
      c0 = D64##TYPE(sp[yDelta0 + xDelta0]) * xf0 +             \
           D64##TYPE(sp[yDelta0          ]) * xf1 +             \
           D64##TYPE(sp[yDelta0 + xDelta1]) * xf2 +             \
           D64##TYPE(sp[yDelta0 + xDelta2]) * xf3;              \
                                                                \
      c1 = D64##TYPE(sp[xDelta0]) * xf0 +                       \
           D64##TYPE(sp[      0]) * xf1 +                       \
           D64##TYPE(sp[xDelta1]) * xf2 +                       \
           D64##TYPE(sp[xDelta2]) * xf3;                        \
                                                                \
      c2 = D64##TYPE(sp[yDelta1 + xDelta0]) * xf0 +             \
           D64##TYPE(sp[yDelta1          ]) * xf1 +             \
           D64##TYPE(sp[yDelta1 + xDelta1]) * xf2 +             \
           D64##TYPE(sp[yDelta1 + xDelta2]) * xf3;              \
                                                                \
      c3 = D64##TYPE(sp[yDelta2 + xDelta0]) * xf0 +             \
           D64##TYPE(sp[yDelta2          ]) * xf1 +             \
           D64##TYPE(sp[yDelta2 + xDelta1]) * xf2 +             \
           D64##TYPE(sp[yDelta2 + xDelta2]) * xf3;              \
                                                                \
      val0 = c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3;                 \
                                                                \
      SAT##TYPE(dp[k], val0);                                   \
                                                                \
      sp++;                                                     \
    }                                                           \
                                                                \
    X += dX;                                                    \
    Y += dY;                                                    \
    dp += channels;                                             \
  }

/***************************************************************/
#define MLIB_EDGE_BC_TBL(TYPE, Left, Right)                     \
  MLIB_EDGE_BC_LINE(TYPE, Left, Right, GET_FLT_TBL)

/***************************************************************/
#define MLIB_EDGE_BC(TYPE, Left, Right)                         \
  MLIB_EDGE_BC_LINE(TYPE, Left, Right, GET_FLT_BC)

/***************************************************************/
#define MLIB_EDGE_BC2(TYPE, Left, Right)                        \
  MLIB_EDGE_BC_LINE(TYPE, Left, Right, GET_FLT_BC2)

/***************************************************************/
#define MLIB_EDGE_INDEX_BC(ITYPE, DTYPE, size)                  \
  for (j = 0; j < size; j++) {                                  \
    GET_FLT_TBL(X, xf0, xf1, xf2, xf3);                         \
    GET_FLT_TBL(Y, yf0, yf1, yf2, yf3);                         \
                                                                \
    CALC_SRC_POS(X, Y, 1, srcStride);                           \
                                                                \
    sp = (ITYPE*)lineAddr[ySrc] + xSrc;                         \
                                                                \
    for (k = 0; k < channels; k++) {                            \
      c0 = LUT(k, yDelta0 + xDelta0) * xf0 +                    \
           LUT(k, yDelta0          ) * xf1 +                    \
           LUT(k, yDelta0 + xDelta1) * xf2 +                    \
           LUT(k, yDelta0 + xDelta2) * xf3;                     \
                                                                \
      c1 = LUT(k, xDelta0) * xf0 +                              \
           LUT(k, 0      ) * xf1 +                              \
           LUT(k, xDelta1) * xf2 +                              \
           LUT(k, xDelta2) * xf3;                               \
                                                                \
      c2 = LUT(k, yDelta1 + xDelta0) * xf0 +                    \
           LUT(k, yDelta1          ) * xf1 +                    \
           LUT(k, yDelta1 + xDelta1) * xf2 +                    \
           LUT(k, yDelta1 + xDelta2) * xf3;                     \
                                                                \
      c3 = LUT(k, yDelta2 + xDelta0) * xf0 +                    \
           LUT(k, yDelta2          ) * xf1 +                    \
           LUT(k, yDelta2 + xDelta1) * xf2 +                    \
           LUT(k, yDelta2 + xDelta2) * xf3;                     \
                                                                \
      val0 = c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3;                 \
                                                                \
      SAT##DTYPE(pbuff[k], val0);                               \
    }                                                           \
    pbuff += channels;                                          \
                                                                \
    X += dX;                                                    \
    Y += dY;                                                    \
  }

/***************************************************************/
#define MLIB_PROCESS_EDGES_ZERO(TYPE) {                         \
  TYPE *dp, *dstLineEnd;                                        \
                                                                \
  for (i = yStartE; i < yStart; i++) {                          \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    data   += dstStride;                                        \
                                                                \
    MLIB_EDGE_ZERO_LINE(TYPE, xLeftE, xRightE);                 \
  }                                                             \
                                                                \
  for (; i <= yFinish; i++) {                                   \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    xLeft   = leftEdges[i];                                     \
    xRight  = rightEdges[i] + 1;                                \
    data   += dstStride;                                        \
                                                                \
    if (xLeft < xRight) {                                       \
      MLIB_EDGE_ZERO_LINE(TYPE, xLeftE, xLeft);                 \
    } else {                                                    \
      xRight = xLeftE;                                          \
    }                                                           \
                                                                \
    MLIB_EDGE_ZERO_LINE(TYPE, xRight, xRightE);                 \
  }                                                             \
                                                                \
  for (; i <= yFinishE; i++) {                                  \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    data   += dstStride;                                        \
                                                                \
    MLIB_EDGE_ZERO_LINE(TYPE, xLeftE, xRightE);                 \
  }                                                             \
}

/***************************************************************/
#define MLIB_PROCESS_EDGES(PROCESS_LINE, TYPE) {                \
  TYPE *sp, *dp;                                                \
  mlib_s32 k, size;                                             \
                                                                \
  for (i = yStartE; i < yStart; i++) {                          \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    X       = xStartsE[i];                                      \
    Y       = yStartsE[i];                                      \
    data   += dstStride;                                        \
                                                                \
    PROCESS_LINE(TYPE, xLeftE, xRightE);                        \
  }                                                             \
                                                                \
  for (; i <= yFinish; i++) {                                   \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    xLeft   = leftEdges[i];                                     \
    xRight  = rightEdges[i] + 1;                                \
    X       = xStartsE[i];                                      \
    Y       = yStartsE[i];                                      \
    data   += dstStride;                                        \
                                                                \
    if (xLeft < xRight) {                                       \
      PROCESS_LINE(TYPE, xLeftE, xLeft);                        \
    } else {                                                    \
      xRight = xLeftE;                                          \
    }                                                           \
                                                                \
    X = xStartsE[i] + dX * (xRight - xLeftE);                   \
    Y = yStartsE[i] + dY * (xRight - xLeftE);                   \
    PROCESS_LINE(TYPE, xRight, xRightE);                        \
  }                                                             \
                                                                \
  for (; i <= yFinishE; i++) {                                  \
    xLeftE  = leftEdgesE[i];                                    \
    xRightE = rightEdgesE[i] + 1;                               \
    X       = xStartsE[i];                                      \
    Y       = yStartsE[i];                                      \
    data   += dstStride;                                        \
                                                                \
    PROCESS_LINE(TYPE, xLeftE, xRightE);                        \
  }                                                             \
}

/***************************************************************/
#define GET_EDGE_PARAMS_ZERO()                                  \
  mlib_image *dst = param -> dst;                               \
  mlib_s32  *leftEdges  = param -> leftEdges;                   \
  mlib_s32  *rightEdges = param -> rightEdges;                  \
  mlib_s32  *leftEdgesE  = param_e -> leftEdges;                \
  mlib_s32  *rightEdgesE = param_e -> rightEdges;               \
  mlib_type type      = mlib_ImageGetType(dst);                 \
  mlib_s32  channels  = mlib_ImageGetChannels(dst);             \
  mlib_s32  dstStride = mlib_ImageGetStride(dst);               \
  mlib_s32  yStart    = param -> yStart;                        \
  mlib_s32  yFinish   = param -> yFinish;                       \
  mlib_s32  yStartE   = param_e -> yStart;                      \
  mlib_s32  yFinishE  = param_e -> yFinish;                     \
  mlib_u8   *data     = param_e -> dstData;                     \
  mlib_s32  xLeft, xRight, xLeftE, xRightE;                     \
  mlib_s32  i

/***************************************************************/
#define GET_EDGE_PARAMS_NN()                                    \
  GET_EDGE_PARAMS_ZERO();                                       \
  mlib_s32  *xStartsE = param_e -> xStarts;                     \
  mlib_s32  *yStartsE = param_e -> yStarts;                     \
  mlib_u8   **lineAddr = param -> lineAddr;                     \
  mlib_s32  dX = param_e -> dX;                                 \
  mlib_s32  dY = param_e -> dY;                                 \
  mlib_s32  xSrc, ySrc, X, Y;                                   \
  mlib_s32  j

/***************************************************************/
#define GET_EDGE_PARAMS()                                       \
  GET_EDGE_PARAMS_NN();                                         \
  mlib_image *src = param -> src;                               \
  mlib_s32  srcWidth  = mlib_ImageGetWidth(src);                \
  mlib_s32  srcHeight = mlib_ImageGetHeight(src);               \
  mlib_s32  srcStride = mlib_ImageGetStride(src)

/***************************************************************/
void mlib_ImageAffineEdgeZero(mlib_affine_param *param,
                              mlib_affine_param *param_e,
                              const void        *colormap)
{
  GET_EDGE_PARAMS_ZERO();
  mlib_s32 zero = 0;

  if (colormap != NULL) {
    zero = mlib_ImageGetLutOffset(colormap);
  }

  switch (type) {
    case MLIB_BYTE:
      MLIB_PROCESS_EDGES_ZERO(mlib_u8);
      break;

    case MLIB_SHORT:
    case MLIB_USHORT:
      MLIB_PROCESS_EDGES_ZERO(mlib_s16);
      break;

    case MLIB_INT:
    case MLIB_FLOAT:
      MLIB_PROCESS_EDGES_ZERO(mlib_s32);
      break;

    case MLIB_DOUBLE:{
        mlib_d64 zero = 0;
        MLIB_PROCESS_EDGES_ZERO(mlib_d64);
        break;
      }
  }
}

/***************************************************************/
void mlib_ImageAffineEdgeNearest(mlib_affine_param *param,
                                 mlib_affine_param *param_e)
{
  GET_EDGE_PARAMS_NN();

  switch (type) {
    case MLIB_BYTE:
      MLIB_PROCESS_EDGES(MLIB_EDGE_NEAREST_LINE, mlib_u8);
      break;

    case MLIB_SHORT:
    case MLIB_USHORT:
      MLIB_PROCESS_EDGES(MLIB_EDGE_NEAREST_LINE, mlib_s16);
      break;

    case MLIB_INT:
    case MLIB_FLOAT:
      MLIB_PROCESS_EDGES(MLIB_EDGE_NEAREST_LINE, mlib_s32);
      break;

    case MLIB_DOUBLE:
      MLIB_PROCESS_EDGES(MLIB_EDGE_NEAREST_LINE, mlib_d64);
      break;
  }
}

/***************************************************************/
mlib_status mlib_ImageAffineEdgeExtend_BL(mlib_affine_param *param,
                                          mlib_affine_param *param_e,
                                          const void        *colormap)
{
  GET_EDGE_PARAMS();
  mlib_d64 scale = 1.0 / (mlib_d64) MLIB_PREC;
  mlib_s32 xDelta, yDelta, xFlag, yFlag;
  mlib_d64 t, u, pix0;
  mlib_d64 a00, a01, a10, a11;

  if (colormap != NULL) {
    mlib_s32 max_xsize = param_e->max_xsize;
    mlib_type ltype = mlib_ImageGetLutType(colormap);
    mlib_d64 *plut = (mlib_d64 *) mlib_ImageGetLutDoubleData(colormap);
    void *buff;

    channels = mlib_ImageGetLutChannels(colormap);
    plut -= channels * mlib_ImageGetLutOffset(colormap);

    if (max_xsize == 0) {
      return MLIB_SUCCESS;
    }

    if (ltype == MLIB_BYTE) {
      buff = mlib_malloc(channels * max_xsize);
    }
    else {
      buff = mlib_malloc(channels * max_xsize * sizeof(mlib_s16));
    }

    if (buff == NULL)
      return MLIB_FAILURE;

    switch (ltype) {
      case MLIB_BYTE:
        switch (type) {
          case MLIB_BYTE:
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_u8i, mlib_u8);
            break;

          case MLIB_SHORT:
            srcStride >>= 1;
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_u8i, mlib_s16);
            break;
        }

        break;

      case MLIB_SHORT:
        switch (type) {
          case MLIB_BYTE:
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_s16i, mlib_u8);
            break;

          case MLIB_SHORT:
            srcStride >>= 1;
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_s16i, mlib_s16);
            break;
        }

        break;
    }

    mlib_free(buff);

    return MLIB_SUCCESS;
  }

  switch (type) {
    case MLIB_BYTE:
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_u8);
      break;

    case MLIB_SHORT:
      srcStride >>= 1;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_s16);
      break;

    case MLIB_USHORT:
      srcStride >>= 1;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_u16);
      break;

    case MLIB_INT:
      srcStride >>= 2;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_s32);
      break;

    case MLIB_FLOAT:
      srcStride >>= 2;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_f32);
      break;

    case MLIB_DOUBLE:
      srcStride >>= 3;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BL, mlib_d64);
      break;
  }

  return MLIB_SUCCESS;
}

/***************************************************************/
#undef  MLIB_EDGE_INDEX
#define MLIB_EDGE_INDEX MLIB_EDGE_INDEX_BC

mlib_status mlib_ImageAffineEdgeExtend_BC(mlib_affine_param *param,
                                          mlib_affine_param *param_e,
                                          const void        *colormap)
{
  GET_EDGE_PARAMS();
  mlib_d64 scale = 1.0 / (mlib_d64) MLIB_PREC;
  mlib_s32 xFlag, yFlag;
  mlib_d64 dx, dx_2, dx2, dx3_2, dx3_3;
  mlib_d64 xf0, xf1, xf2, xf3;
  mlib_d64 yf0, yf1, yf2, yf3;
  mlib_d64 c0, c1, c2, c3, val0;
  mlib_type ltype;
  mlib_filter filter = param->filter;
  mlib_f32 *fptr;
  mlib_f32 const *flt_tbl;
  mlib_s32 filterpos, flt_shift, flt_mask;
  mlib_s32 xDelta0, xDelta1, xDelta2;
  mlib_s32 yDelta0, yDelta1, yDelta2;
  mlib_d64 sat;

  ltype = (colormap != NULL) ? mlib_ImageGetLutType(colormap) : type;

  if (ltype == MLIB_BYTE) {
    flt_shift = FLT_SHIFT_U8;
    flt_mask = FLT_MASK_U8;
    flt_tbl = (filter == MLIB_BICUBIC) ? mlib_filters_u8f_bc : mlib_filters_u8f_bc2;
    sat = (mlib_d64) 0x7F800000;                           /* saturation for U8 */
  }
  else {
    flt_shift = FLT_SHIFT_S16;
    flt_mask = FLT_MASK_S16;
    flt_tbl = (filter == MLIB_BICUBIC) ? mlib_filters_s16f_bc : mlib_filters_s16f_bc2;
    sat = (mlib_d64) 0x7FFF8000;                           /* saturation for U16 */
  }

  if (colormap != NULL) {
    mlib_s32 max_xsize = param_e->max_xsize;
    mlib_d64 *plut = (mlib_d64 *) mlib_ImageGetLutDoubleData(colormap);
    void *buff;

    channels = mlib_ImageGetLutChannels(colormap);
    plut -= channels * mlib_ImageGetLutOffset(colormap);

    if (max_xsize == 0) {
      return MLIB_SUCCESS;
    }

    if (ltype == MLIB_BYTE) {
      buff = mlib_malloc(channels * max_xsize);
    }
    else {
      buff = mlib_malloc(channels * max_xsize * sizeof(mlib_s16));
    }

    if (buff == NULL)
      return MLIB_FAILURE;

    switch (ltype) {
      case MLIB_BYTE:
        switch (type) {
          case MLIB_BYTE:
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_u8i, mlib_u8);
            break;

          case MLIB_SHORT:
            srcStride >>= 1;
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_u8i, mlib_s16);
            break;
        }

        break;

      case MLIB_SHORT:
        switch (type) {
          case MLIB_BYTE:
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_s16i, mlib_u8);
            break;

          case MLIB_SHORT:
            srcStride >>= 1;
            MLIB_PROCESS_EDGES(MLIB_EDGE_INDEX_s16i, mlib_s16);
            break;
        }

        break;
    }

    mlib_free(buff);

    return MLIB_SUCCESS;
  }

  switch (type) {
    case MLIB_BYTE:
      MLIB_PROCESS_EDGES(MLIB_EDGE_BC_TBL, mlib_u8);
      break;

    case MLIB_SHORT:
      srcStride >>= 1;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BC_TBL, mlib_s16);
      break;

    case MLIB_USHORT:
      srcStride >>= 1;
      MLIB_PROCESS_EDGES(MLIB_EDGE_BC_TBL, mlib_u16);
      break;

    case MLIB_INT:
      srcStride >>= 2;

      if (filter == MLIB_BICUBIC) {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC, mlib_s32);
      }
      else {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC2, mlib_s32);
      }

      break;

    case MLIB_FLOAT:
      srcStride >>= 2;

      if (filter == MLIB_BICUBIC) {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC, mlib_f32);
      }
      else {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC2, mlib_f32);
      }

      break;

    case MLIB_DOUBLE:
      srcStride >>= 3;

      if (filter == MLIB_BICUBIC) {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC, mlib_d64);
      }
      else {
        MLIB_PROCESS_EDGES(MLIB_EDGE_BC2, mlib_d64);
      }

      break;
  }

  return MLIB_SUCCESS;
}

/***************************************************************/