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Java example source code file (java2d_Mlib.c)

This example Java source code file (java2d_Mlib.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

add_suff, any3byte, any4byte, anybyte, anyint, anyshort, anytype, compositeinfo, define_xor_copy, func, mlib_image_set, nativeprimitive, nchan, pixelstride

The java2d_Mlib.c Java example source code

/*
 * Copyright (c) 2003, 2010, 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.
 */

#if !defined(JAVA2D_NO_MLIB) || defined(MLIB_ADD_SUFF)

#include "java2d_Mlib.h"
#include "SurfaceData.h"

#include "mlib_ImageZoom.h"

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

#define DEFINE_ISO_COPY(FUNC, ANYTYPE)               \
void ADD_SUFF(ANYTYPE##FUNC)(BLIT_PARAMS)            \
{                                                    \
    mlib_s32 srcScan = pSrcInfo->scanStride;         \
    mlib_s32 dstScan = pDstInfo->scanStride;         \
    mlib_s32 xsize = width*ANYTYPE##PixelStride;     \
    mlib_s32 i;                                      \
                                                     \
    if (srcScan == xsize && dstScan == xsize) {      \
        xsize *= height;                             \
        height = 1;                                  \
    }                                                \
                                                     \
    for (i = 0; i < height; i++) {                   \
        mlib_ImageCopy_na(srcBase, dstBase, xsize);  \
        srcBase = (mlib_u8*)srcBase + srcScan;       \
        dstBase = (mlib_u8*)dstBase + dstScan;       \
    }                                                \
}

DEFINE_ISO_COPY(IsomorphicCopy, Any3Byte)
DEFINE_ISO_COPY(IsomorphicCopy, Any4Byte)
DEFINE_ISO_COPY(IsomorphicCopy, AnyByte)
DEFINE_ISO_COPY(IsomorphicCopy, AnyInt)
DEFINE_ISO_COPY(IsomorphicCopy, AnyShort)

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

#define SET_PIX(index, chan)         \
    dst_ptr[index] = pixel##chan

#define W_LEVEL_1   8
#define W_LEVEL_3  16
#define W_LEVEL_4   8

#define DEFINE_SET_RECT(FUNC, ANYTYPE, NCHAN)                       \
void ADD_SUFF(ANYTYPE##FUNC)(SurfaceDataRasInfo * pRasInfo,         \
                             jint lox, jint loy, jint hix,          \
                             jint hiy, jint pixel,                  \
                             NativePrimitive * pPrim,               \
                             CompositeInfo * pCompInfo)             \
{                                                                   \
    mlib_image dst[1];                                              \
    mlib_s32 dstScan = pRasInfo->scanStride;                        \
    mlib_s32 height = hiy - loy;                                    \
    mlib_s32 width  = hix - lox;                                    \
    mlib_u8  *dstBase = (mlib_u8*)(pRasInfo->rasBase);              \
    mlib_s32 c_arr[4];                                              \
                                                                    \
    dstBase += loy*dstScan + lox*ANYTYPE##PixelStride;              \
                                                                    \
    if (width <= W_LEVEL_##NCHAN) {                                 \
        EXTRACT_CONST_##NCHAN(pixel);                               \
                                                                    \
        LOOP_DST(ANYTYPE, NCHAN, dstBase, dstScan, SET_PIX);        \
        return;                                                     \
    }                                                               \
                                                                    \
    STORE_CONST_##NCHAN(c_arr, pixel);                              \
                                                                    \
    MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN,                      \
                   width, height, dstScan, dstBase);                \
                                                                    \
    mlib_ImageClear(dst, c_arr);                                    \
}

DEFINE_SET_RECT(SetRect, Any3Byte, 3)
DEFINE_SET_RECT(SetRect, Any4Byte, 4)
DEFINE_SET_RECT(SetRect, AnyByte,  1)
DEFINE_SET_RECT(SetRect, AnyInt,   1)
DEFINE_SET_RECT(SetRect, AnyShort, 1)

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

#define XOR_PIX(index, chan)         \
    dst_ptr[index] ^= pixel##chan

#define DEFINE_XOR_RECT(FUNC, ANYTYPE, NCHAN)                       \
void ADD_SUFF(ANYTYPE##FUNC)(SurfaceDataRasInfo * pRasInfo,         \
                             jint lox, jint loy, jint hix,          \
                             jint hiy, jint pixel,                  \
                             NativePrimitive * pPrim,               \
                             CompositeInfo * pCompInfo)             \
{                                                                   \
    mlib_image dst[1];                                              \
    mlib_s32 dstScan = pRasInfo->scanStride;                        \
    mlib_s32 height = hiy - loy;                                    \
    mlib_s32 width  = hix - lox;                                    \
    mlib_u8  *dstBase = (mlib_u8*)(pRasInfo->rasBase);              \
    mlib_s32 c_arr[4];                                              \
    mlib_s32 xorpixel = pCompInfo->details.xorPixel;                \
    mlib_s32 alphamask = pCompInfo->alphaMask;                      \
                                                                    \
    pixel = (pixel ^ xorpixel) &~ alphamask;                        \
                                                                    \
    dstBase += loy*dstScan + lox*ANYTYPE##PixelStride;              \
                                                                    \
    if (width < 8) {                                                \
        EXTRACT_CONST_##NCHAN(pixel);                               \
                                                                    \
        LOOP_DST(ANYTYPE, NCHAN, dstBase, dstScan, XOR_PIX);        \
        return;                                                     \
    }                                                               \
                                                                    \
    STORE_CONST_##NCHAN(c_arr, pixel);                              \
                                                                    \
    MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN,                      \
                   width, height, dstScan, dstBase);                \
                                                                    \
    mlib_ImageConstXor(dst, dst, c_arr);                            \
}

DEFINE_XOR_RECT(XorRect, Any3Byte, 3)
DEFINE_XOR_RECT(XorRect, Any4Byte, 4)
DEFINE_XOR_RECT(XorRect, AnyByte,  1)
DEFINE_XOR_RECT(XorRect, AnyInt,   1)
DEFINE_XOR_RECT(XorRect, AnyShort, 1)

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

#define XOR_COPY(index, chan)         \
    dst_ptr[index] = dst_ptr[index] ^ src_ptr[index] ^ pixel##chan

#define DEFINE_XOR_COPY(FUNC, ANYTYPE, NCHAN)                  \
void ADD_SUFF(ANYTYPE##FUNC)(void *srcBase,                    \
                             void *dstBase,                    \
                             juint width,                      \
                             juint height,                     \
                             SurfaceDataRasInfo *pSrcInfo,     \
                             SurfaceDataRasInfo *pDstInfo,     \
                             NativePrimitive *pPrim,           \
                             CompositeInfo *pCompInfo)         \
{                                                              \
    mlib_image src[1], dst[1];                                 \
    mlib_s32 srcScan = pSrcInfo->scanStride;                   \
    mlib_s32 dstScan = pDstInfo->scanStride;                   \
    mlib_s32 c_arr[4];                                         \
    mlib_s32 pixel  = pCompInfo->details.xorPixel;             \
                                                               \
    if (width < 8*sizeof(ANYTYPE##DataType)) {                 \
        EXTRACT_CONST_##NCHAN(pixel);                          \
                                                               \
        LOOP_DST_SRC(ANYTYPE, NCHAN, dstBase, dstScan,         \
                     srcBase, srcScan, XOR_COPY);              \
        return;                                                \
    }                                                          \
                                                               \
    STORE_CONST_##NCHAN(c_arr, pixel);                         \
                                                               \
    MLIB_IMAGE_SET(src, MLIB_##ANYTYPE, NCHAN,                 \
                   width, height, srcScan, srcBase);           \
    MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN,                 \
                   width, height, dstScan, dstBase);           \
                                                               \
    mlib_ImageXor(dst, dst, src);                              \
    mlib_ImageConstXor(dst, dst, c_arr);                       \
}

DEFINE_XOR_COPY(IsomorphicXorCopy, Any3Byte, 3)
DEFINE_XOR_COPY(IsomorphicXorCopy, Any4Byte, 4)
DEFINE_XOR_COPY(IsomorphicXorCopy, AnyByte,  1)
DEFINE_XOR_COPY(IsomorphicXorCopy, AnyInt,   1)
DEFINE_XOR_COPY(IsomorphicXorCopy, AnyShort, 1)

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

#define DEFINE_SET_SPANS(FUNC, ANYTYPE, NCHAN)                      \
void ADD_SUFF(ANYTYPE##FUNC)(SurfaceDataRasInfo * pRasInfo,         \
                             SpanIteratorFuncs * pSpanFuncs,        \
                             void *siData, jint pixel,              \
                             NativePrimitive * pPrim,               \
                             CompositeInfo * pCompInfo)             \
{                                                                   \
    mlib_image dst[1];                                              \
    mlib_s32 dstScan = pRasInfo->scanStride;                        \
    mlib_s32 height;                                                \
    mlib_s32 width;                                                 \
    mlib_u8  *dstBase = (mlib_u8*)(pRasInfo->rasBase), *pdst;       \
    mlib_s32 c_arr[4];                                              \
    jint     bbox[4];                                               \
                                                                    \
    STORE_CONST_##NCHAN(c_arr, pixel);                              \
                                                                    \
    while ((*pSpanFuncs->nextSpan)(siData, bbox)) {                 \
        mlib_s32 lox = bbox[0];                                     \
        mlib_s32 loy = bbox[1];                                     \
        mlib_s32 width  = bbox[2] - lox;                            \
        mlib_s32 height = bbox[3] - loy;                            \
                                                                    \
        pdst = dstBase + loy*dstScan + lox*ANYTYPE##PixelStride;    \
                                                                    \
        MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN_##ANYTYPE,        \
                       width, height, dstScan, pdst);               \
                                                                    \
        mlib_ImageClear(dst, c_arr);                                \
    }                                                               \
}

DEFINE_SET_SPANS(SetSpans, Any3Byte, 3)
DEFINE_SET_SPANS(SetSpans, Any4Byte, 4)
DEFINE_SET_SPANS(SetSpans, AnyByte,  1)
DEFINE_SET_SPANS(SetSpans, AnyInt,   1)
DEFINE_SET_SPANS(SetSpans, AnyShort, 1)

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

#define DEFINE_XOR_SPANS(FUNC, ANYTYPE, NCHAN)                      \
void ADD_SUFF(ANYTYPE##FUNC)(SurfaceDataRasInfo * pRasInfo,         \
                             SpanIteratorFuncs * pSpanFuncs,        \
                             void *siData, jint pixel,              \
                             NativePrimitive * pPrim,               \
                             CompositeInfo * pCompInfo)             \
{                                                                   \
    mlib_image dst[1];                                              \
    mlib_s32 dstScan = pRasInfo->scanStride;                        \
    mlib_s32 height;                                                \
    mlib_s32 width;                                                 \
    mlib_u8  *dstBase = (mlib_u8*)(pRasInfo->rasBase), *pdst;       \
    mlib_s32 c_arr[4];                                              \
    mlib_s32 xorpixel = pCompInfo->details.xorPixel;                \
    mlib_s32 alphamask = pCompInfo->alphaMask;                      \
    jint     bbox[4];                                               \
                                                                    \
    pixel = (pixel ^ xorpixel) &~ alphamask;                        \
                                                                    \
    STORE_CONST_##NCHAN(c_arr, pixel);                              \
                                                                    \
    while ((*pSpanFuncs->nextSpan)(siData, bbox)) {                 \
        mlib_s32 lox = bbox[0];                                     \
        mlib_s32 loy = bbox[1];                                     \
        mlib_s32 width  = bbox[2] - lox;                            \
        mlib_s32 height = bbox[3] - loy;                            \
                                                                    \
        pdst = dstBase + loy*dstScan + lox*ANYTYPE##PixelStride;    \
                                                                    \
        MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN_##ANYTYPE,        \
                       width, height, dstScan, pdst);               \
                                                                    \
        mlib_ImageConstXor(dst, dst, c_arr);                        \
    }                                                               \
}

DEFINE_XOR_SPANS(XorSpans, Any3Byte, 3)
DEFINE_XOR_SPANS(XorSpans, Any4Byte, 4)
DEFINE_XOR_SPANS(XorSpans, AnyByte,  1)
DEFINE_XOR_SPANS(XorSpans, AnyInt,   1)
DEFINE_XOR_SPANS(XorSpans, AnyShort, 1)

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

#define DEFINE_SET_PGRAM(FUNC, ANYTYPE, NCHAN)                      \
void ADD_SUFF(ANYTYPE##FUNC)(SurfaceDataRasInfo *pRasInfo,          \
                             jint lox, jint loy,                    \
                             jint hix, jint hiy,                    \
                             jlong leftx, jlong dleftx,             \
                             jlong rightx, jlong drightx,           \
                             jint pixel, NativePrimitive * pPrim,   \
                             CompositeInfo * pCompInfo)             \
{                                                                   \
    mlib_image dst[1];                                              \
    mlib_s32 dstScan = pRasInfo->scanStride;                        \
    mlib_u8  *dstBase = (mlib_u8*)(pRasInfo->rasBase), *pdst;       \
    mlib_s32 c_arr[4];                                              \
                                                                    \
    STORE_CONST_##NCHAN(c_arr, pixel);                              \
    pdst = dstBase + loy*dstScan;                                   \
                                                                    \
    while (loy < hiy) {                                             \
        jint lx = WholeOfLong(leftx);                               \
        jint rx = WholeOfLong(rightx);                              \
        if (lx < lox) lx = lox;                                     \
        if (rx > hix) rx = hix;                                     \
                                                                    \
        MLIB_IMAGE_SET(dst, MLIB_##ANYTYPE, NCHAN_##ANYTYPE,        \
                       rx-lx, 1, dstScan,                           \
                       pdst + lx*ANYTYPE##PixelStride);             \
                                                                    \
        mlib_ImageClear(dst, c_arr);                                \
                                                                    \
        pdst = PtrAddBytes(pdst, dstScan);                          \
        leftx += dleftx;                                            \
        rightx += drightx;                                          \
        loy++;                                                      \
    }                                                               \
}

DEFINE_SET_PGRAM(SetParallelogram, Any3Byte, 3)
DEFINE_SET_PGRAM(SetParallelogram, Any4Byte, 4)
DEFINE_SET_PGRAM(SetParallelogram, AnyByte,  1)
DEFINE_SET_PGRAM(SetParallelogram, AnyInt,   1)
DEFINE_SET_PGRAM(SetParallelogram, AnyShort, 1)

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

#define SCALE_COPY(index, chan)         \
    pDst[chan] = pSrc[index]

#define MLIB_ZOOM_NN_AnyByte  mlib_ImageZoom_U8_1_Nearest(param);
#define MLIB_ZOOM_NN_Any3Byte mlib_ImageZoom_U8_3_Nearest(param);
#define MLIB_ZOOM_NN_AnyShort mlib_ImageZoom_S16_1_Nearest(param);
#define MLIB_ZOOM_NN_AnyInt   mlib_ImageZoom_S32_1_Nearest(param);

#define MLIB_ZOOM_NN_Any4Byte                                      \
{                                                                  \
    mlib_s32 b_align = (mlib_s32)srcBase | (mlib_s32)dstBase |     \
                       srcScan | dstScan;                          \
                                                                   \
    if (!(b_align & 3)) {                                          \
        mlib_ImageZoom_S32_1_Nearest(param);                       \
    } else if (!(b_align & 1)) {                                   \
        mlib_ImageZoom_S16_2_Nearest(param);                       \
    } else {                                                       \
        mlib_ImageZoom_U8_4_Nearest(param);                        \
    }                                                              \
}

#define DEFINE_ISO_SCALE(FUNC, ANYTYPE, NCHAN)                     \
void ADD_SUFF(ANYTYPE##FUNC)(void *srcBase, void *dstBase,         \
                             juint width, juint height,            \
                             jint sxloc, jint syloc,               \
                             jint sxinc, jint syinc,               \
                             jint shift,                           \
                             SurfaceDataRasInfo *pSrcInfo,         \
                             SurfaceDataRasInfo *pDstInfo,         \
                             NativePrimitive *pPrim,               \
                             CompositeInfo *pCompInfo)             \
{                                                                  \
    mlib_work_image param[1];                                      \
    mlib_clipping current[1];                                      \
    mlib_s32 srcScan = pSrcInfo->scanStride;                       \
    mlib_s32 dstScan = pDstInfo->scanStride;                       \
                                                                   \
    if (width <= 32) {                                             \
        ANYTYPE##DataType *pSrc;                                   \
        ANYTYPE##DataType *pDst = dstBase;                         \
        dstScan -= (width) * ANYTYPE##PixelStride;                 \
                                                                   \
        do {                                                       \
            juint w = width;                                       \
            jint  tmpsxloc = sxloc;                                \
            pSrc = srcBase;                                        \
            PTR_ADD(pSrc, (syloc >> shift) * srcScan);             \
            do {                                                   \
                jint i = (tmpsxloc >> shift);                      \
                PROCESS_PIX_##NCHAN(SCALE_COPY);                   \
                pDst += NCHAN;                                     \
                tmpsxloc += sxinc;                                 \
            }                                                      \
            while (--w > 0);                                       \
            PTR_ADD(pDst, dstScan);                                \
            syloc += syinc;                                        \
        }                                                          \
        while (--height > 0);                                      \
        return;                                                    \
    }                                                              \
                                                                   \
    param->current = current;                                      \
                                                                   \
    if (shift <= MLIB_SHIFT /* 16 */) {                            \
        jint dshift = MLIB_SHIFT - shift;                          \
        sxloc <<= dshift;                                          \
        syloc <<= dshift;                                          \
        sxinc <<= dshift;                                          \
        syinc <<= dshift;                                          \
    } else {                                                       \
        jint dshift = shift - MLIB_SHIFT;                          \
        sxloc >>= dshift;                                          \
        syloc >>= dshift;                                          \
        sxinc >>= dshift;                                          \
        syinc >>= dshift;                                          \
    }                                                              \
                                                                   \
    current->width  = width;                                       \
    current->height = height;                                      \
    param->DX = sxinc;                                             \
    param->DY = syinc;                                             \
    param->src_stride = srcScan;                                   \
    param->dst_stride = dstScan;                                   \
    current->srcX = sxloc;                                         \
    current->srcY = syloc;                                         \
    current->sp = (mlib_u8*)srcBase                                \
          + (sxloc >> MLIB_SHIFT)*ANYTYPE##PixelStride             \
          + (syloc >> MLIB_SHIFT)*srcScan;                         \
    current->dp = dstBase;                                         \
                                                                   \
    MLIB_ZOOM_NN_##ANYTYPE                                         \
}

DEFINE_ISO_SCALE(IsomorphicScaleCopy, Any3Byte, 3)
DEFINE_ISO_SCALE(IsomorphicScaleCopy, Any4Byte, 4)
DEFINE_ISO_SCALE(IsomorphicScaleCopy, AnyByte,  1)
DEFINE_ISO_SCALE(IsomorphicScaleCopy, AnyInt,   1)
DEFINE_ISO_SCALE(IsomorphicScaleCopy, AnyShort, 1)

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

#endif /* JAVA2D_NO_MLIB */

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