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Java example source code file (mlib_c_ImageAffineIndex_BC.c)

This example Java source code file (mlib_c_ImageAffineIndex_BC.c) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

count_next_row, filter_mask, filter_shift, func_affineindex_bc_0, func_affineindex_bc_1, get_pointer, load_first_row, ltype, mlib_shift, mlib_type\*, nchan, s16, store_sat_value_

The mlib_c_ImageAffineIndex_BC.c Java example source code

/*
 * 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.
 */


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

/***************************************************************/
#define MLIB_LIMIT  512
#define MLIB_SHIFT   16
#define MLIB_PREC    (1 << MLIB_SHIFT)
#define MLIB_MASK    (MLIB_PREC - 1)

/***************************************************************/
#define DTYPE  MLIB_TYPE

/***************************************************************/
#define DECLAREVAR_IND()                                        \
  DECLAREVAR0();                                                \
  mlib_s32  *warp_tbl   = param -> warp_tbl;                    \
  mlib_s32  xSrc, ySrc;                                         \
  mlib_s32  srcYStride = param -> srcYStride;                   \
  mlib_s32  max_xsize  = param -> max_xsize;                    \
  mlib_filter filter = param -> filter;                         \
  MLIB_TYPE *sp, *dl;                                           \
  mlib_d64  xf0, xf1, xf2, xf3;                                 \
  mlib_d64  yf0, yf1, yf2, yf3;                                 \
  mlib_d64  c0, c1, c2, c3, val0;                               \
  mlib_s32  filterpos;                                          \
  mlib_f32  *fptr;                                              \
  mlib_d64  s0, s1, s2, s3;                                     \
  mlib_s32  i, size

/***************************************************************/
#define GET_FILTERS_KOEF()                                         \
  filterpos = (X >> FILTER_SHIFT) & FILTER_MASK;                   \
  fptr = (mlib_f32 *) ((mlib_u8 *)mlib_filters_table + filterpos); \
                                                                   \
  xf0 = fptr[0];                                                   \
  xf1 = fptr[1];                                                   \
  xf2 = fptr[2];                                                   \
  xf3 = fptr[3];                                                   \
                                                                   \
  filterpos = (Y >> FILTER_SHIFT) & FILTER_MASK;                   \
  fptr = (mlib_f32 *) ((mlib_u8 *)mlib_filters_table + filterpos); \
                                                                   \
  yf0 = fptr[0];                                                   \
  yf1 = fptr[1];                                                   \
  yf2 = fptr[2];                                                   \
  yf3 = fptr[3]

/***************************************************************/
#define GET_POINTER()                                           \
  xSrc = (X >> MLIB_SHIFT)-1;                                   \
  ySrc = (Y >> MLIB_SHIFT)-1;                                   \
  sp = ((MLIB_TYPE **)lineAddr)[ySrc] + xSrc

/***************************************************************/
#define LOAD_FIRST_ROW(nchan, chan)                             \
  s0 = *(lut + sp[0]*nchan + chan);                             \
  s1 = *(lut + sp[1]*nchan + chan);                             \
  s2 = *(lut + sp[2]*nchan + chan);                             \
  s3 = *(lut + sp[3]*nchan + chan)

/***************************************************************/
#define COUNT_NEXT_ROW(dst, nchan, chan)                        \
  sp = (MLIB_TYPE*)((mlib_addr)sp + srcYStride);                \
  dst = ((*(lut + sp[0]*nchan + chan))*xf0 +                    \
         (*(lut + sp[1]*nchan + chan))*xf1 +                    \
         (*(lut + sp[2]*nchan + chan))*xf2 +                    \
         (*(lut + sp[3]*nchan + chan))*xf3)

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

/***********/
#define STORE_SAT_VALUE_U8(ind)                                 \
  dp[ind] = ((mlib_s32)(val0 - (mlib_d64)0x7F800000) >> 24) ^ 0x80

/***********/
#define STORE_SAT_VALUE_S16(ind)                                \
  dp[ind] = ((mlib_s32)(val0)) >> 16

#else

/***********/
#define STORE_SAT_VALUE_U8(ind)                                 \
  val0 -= (mlib_d64)0x7F800000;                                 \
  if (val0 >= MLIB_S32_MAX)                                     \
    dp[ind] = MLIB_U8_MAX;                                      \
  else if (val0 <= MLIB_S32_MIN)                                \
    dp[ind] = MLIB_U8_MIN;                                      \
  else                                                          \
    dp[ind] = ((mlib_s32)val0 >> 24) ^ 0x80

/***********/
#define STORE_SAT_VALUE_S16(ind)                                \
  if (val0 >= MLIB_S32_MAX)                                     \
    dp[ind] = MLIB_S16_MAX;                                     \
  else if (val0 <= MLIB_S32_MIN)                                \
    dp[ind] = MLIB_S16_MIN;                                     \
  else                                                          \
    dp[ind] = (mlib_s32)val0 >> 16

#endif /* MLIB_USE_FTOI_CLAMPING */

/***************************************************************/
#define MAKE_BC_3CH(lut_format)                                 \
  X += dX;                                                      \
  Y += dY;                                                      \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 0);                                     \
  COUNT_NEXT_ROW(c2, 3, 0);                                     \
  COUNT_NEXT_ROW(c3, 3, 0);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(3, 1);                                         \
  STORE_SAT_VALUE_##lut_format(0);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 1);                                     \
  COUNT_NEXT_ROW(c2, 3, 1);                                     \
  COUNT_NEXT_ROW(c3, 3, 1);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(3, 2);                                         \
  STORE_SAT_VALUE_##lut_format(1);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 2);                                     \
  COUNT_NEXT_ROW(c2, 3, 2);                                     \
  COUNT_NEXT_ROW(c3, 3, 2);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  GET_FILTERS_KOEF();                                           \
  GET_POINTER();                                                \
  LOAD_FIRST_ROW(3, 0);                                         \
  STORE_SAT_VALUE_##lut_format(2);

/***************************************************************/
#define MAKE_LAST_PIXEL_BC_3CH(lut_format)                      \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 0);                                     \
  COUNT_NEXT_ROW(c2, 3, 0);                                     \
  COUNT_NEXT_ROW(c3, 3, 0);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(3, 1);                                         \
  STORE_SAT_VALUE_##lut_format(0);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 1);                                     \
  COUNT_NEXT_ROW(c2, 3, 1);                                     \
  COUNT_NEXT_ROW(c3, 3, 1);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(3, 2);                                         \
  STORE_SAT_VALUE_##lut_format(1);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 3, 2);                                     \
  COUNT_NEXT_ROW(c2, 3, 2);                                     \
  COUNT_NEXT_ROW(c3, 3, 2);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  STORE_SAT_VALUE_##lut_format(2);

/***************************************************************/
#define MAKE_BC_4CH(lut_format)                                 \
  X += dX;                                                      \
  Y += dY;                                                      \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 0);                                     \
  COUNT_NEXT_ROW(c2, 4, 0);                                     \
  COUNT_NEXT_ROW(c3, 4, 0);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 1);                                         \
  STORE_SAT_VALUE_##lut_format(0);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 1);                                     \
  COUNT_NEXT_ROW(c2, 4, 1);                                     \
  COUNT_NEXT_ROW(c3, 4, 1);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 2);                                         \
  STORE_SAT_VALUE_##lut_format(1);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 2);                                     \
  COUNT_NEXT_ROW(c2, 4, 2);                                     \
  COUNT_NEXT_ROW(c3, 4, 2);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 3);                                         \
  STORE_SAT_VALUE_##lut_format(2);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 3);                                     \
  COUNT_NEXT_ROW(c2, 4, 3);                                     \
  COUNT_NEXT_ROW(c3, 4, 3);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  GET_FILTERS_KOEF();                                           \
  GET_POINTER();                                                \
  LOAD_FIRST_ROW(4, 0);                                         \
  STORE_SAT_VALUE_##lut_format(3);

/***************************************************************/
#define MAKE_LAST_PIXEL_BC_4CH(lut_format)                      \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 0);                                     \
  COUNT_NEXT_ROW(c2, 4, 0);                                     \
  COUNT_NEXT_ROW(c3, 4, 0);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 1);                                         \
  STORE_SAT_VALUE_##lut_format(0);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 1);                                     \
  COUNT_NEXT_ROW(c2, 4, 1);                                     \
  COUNT_NEXT_ROW(c3, 4, 1);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 2);                                         \
  STORE_SAT_VALUE_##lut_format(1);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 2);                                     \
  COUNT_NEXT_ROW(c2, 4, 2);                                     \
  COUNT_NEXT_ROW(c3, 4, 2);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  sp = (MLIB_TYPE*)((mlib_addr)sp - 3*srcYStride);              \
  LOAD_FIRST_ROW(4, 3);                                         \
  STORE_SAT_VALUE_##lut_format(2);                              \
  c0 = (s0*xf0 + s1*xf1 + s2*xf2 + s3*xf3);                     \
  COUNT_NEXT_ROW(c1, 4, 3);                                     \
  COUNT_NEXT_ROW(c2, 4, 3);                                     \
  COUNT_NEXT_ROW(c3, 4, 3);                                     \
  val0 = (c0*yf0 + c1*yf1 + c2*yf2 + c3*yf3);                   \
  STORE_SAT_VALUE_##lut_format(3);

/***************************************************************/
#define FILTER_U8  ((filter == MLIB_BICUBIC) ? mlib_filters_u8f_bc  : mlib_filters_u8f_bc2)
#define FILTER_S16 ((filter == MLIB_BICUBIC) ? mlib_filters_s16f_bc : mlib_filters_s16f_bc2)

/***************************************************************/
#define mlib_U8  mlib_u8
#define mlib_S16 mlib_s16

/***************************************************************/
#define FUNC_AFFINEINDEX_BC_0(ITYPE, LTYPE, NCHAN)                                                  \
  mlib_status mlib_ImageAffineIndex_##ITYPE##_##LTYPE##_##NCHAN##CH_BC(mlib_affine_param *param,    \
                                                                       const void        *colormap) \
  {                                                                                                 \
    DECLAREVAR_IND();                                                                               \
    mlib_##LTYPE buff_lcl[NCHAN * MLIB_LIMIT], *pbuff = buff_lcl, *dp;                              \
    mlib_d64  *lut = ((mlib_d64*)mlib_ImageGetLutDoubleData(colormap) -                             \
                      NCHAN * mlib_ImageGetLutOffset(colormap));                                    \
    const mlib_f32 *mlib_filters_table = FILTER_##LTYPE;                                            \
                                                                                                    \
    if (max_xsize > MLIB_LIMIT) {                                                                   \
      pbuff = mlib_malloc(NCHAN * sizeof(mlib_##LTYPE) * max_xsize);                                \
      if (pbuff == NULL) return MLIB_FAILURE;                                                       \
    }                                                                                               \
                                                                                                    \
    for (j = yStart; j <= yFinish; j++) {                                                           \
                                                                                                    \
      NEW_LINE(1);                                                                                  \
      dp = pbuff;                                                                                   \
                                                                                                    \
      GET_FILTERS_KOEF();                                                                           \
      GET_POINTER();                                                                                \
      LOAD_FIRST_ROW(NCHAN, 0);

    /* pragma pipeloop(0) must be here */

/***************************************************************/
#define FUNC_AFFINEINDEX_BC_1(ITYPE, LTYPE, NCHAN)                         \
                                                                           \
      for (i = 0; i < (xRight - xLeft); i++, dp += NCHAN) {                \
        MAKE_BC_##NCHAN##CH(LTYPE);                                        \
      }                                                                    \
                                                                           \
      MAKE_LAST_PIXEL_BC_##NCHAN##CH(LTYPE);                               \
                                                                           \
      mlib_ImageColorTrue2IndexLine_##LTYPE##_##ITYPE##_##NCHAN            \
                                (pbuff, dl, xRight - xLeft + 1, colormap); \
    }                                                                      \
                                                                           \
    if (pbuff != buff_lcl) mlib_free(pbuff);                               \
                                                                           \
    return MLIB_SUCCESS;                                                   \
  }

/***************************************************************/
#undef MLIB_TYPE
#define MLIB_TYPE mlib_u8

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 4
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 8) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(U8, U8, 3)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(U8, U8, 3)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 3
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 9) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(U8, S16, 3)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(U8, S16, 3)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 4
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 8) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(U8, U8, 4)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(U8, U8, 4)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 3
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 9) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(U8, S16, 4)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(U8, S16, 4)

/***************************************************************/
#undef  MLIB_TYPE
#define MLIB_TYPE mlib_s16

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 4
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 8) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(S16, U8, 3)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(S16, U8, 3)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 3
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 9) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(S16, S16, 3)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(S16, S16, 3)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 4
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 8) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(S16, U8, 4)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(S16, U8, 4)

/***************************************************************/
#undef  FILTER_SHIFT
#define FILTER_SHIFT 3
#undef  FILTER_MASK
#define FILTER_MASK  (((1 << 9) - 1) << 4)

FUNC_AFFINEINDEX_BC_0(S16, S16, 4)
#ifdef __SUNPRO_C
#pragma pipeloop(0)
#endif /* __SUNPRO_C */
FUNC_AFFINEINDEX_BC_1(S16, S16, 4)

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

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