JDK14/Java14源码在线阅读
/*
* Copyright (c) 2003, 2018, 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_ImageConvMxN - image convolution with edge condition
*
* SYNOPSIS
* mlib_status mlib_ImageConvMxN(mlib_image *dst,
* const mlib_image *src,
* const mlib_s32 *kernel,
* mlib_s32 m,
* mlib_s32 n,
* mlib_s32 dm,
* mlib_s32 dn,
* mlib_s32 scale,
* mlib_s32 cmask,
* mlib_edge edge)
*
* ARGUMENTS
* dst Pointer to destination image.
* src Pointer to source image.
* m Kernel width (m must be not less than 1).
* n Kernel height (n must be not less than 1).
* dm, dn Position of key element in convolution kernel.
* kernel Pointer to convolution kernel.
* scale The scaling factor to convert the input integer
* coefficients into floating-point coefficients:
* floating-point coefficient = integer coefficient * 2^(-scale)
* cmask Channel mask to indicate the channels to be convolved.
* Each bit of which represents a channel in the image. The
* channels corresponded to 1 bits are those to be processed.
* edge Type of edge condition.
*
* DESCRIPTION
* 2-D convolution, MxN kernel.
*
* The center of the source image is mapped to the center of the
* destination image.
* The unselected channels are not overwritten. If both src and dst have
* just one channel, cmask is ignored.
*
* The edge condition can be one of the following:
* MLIB_EDGE_DST_NO_WRITE (default)
* MLIB_EDGE_DST_FILL_ZERO
* MLIB_EDGE_DST_COPY_SRC
* MLIB_EDGE_SRC_EXTEND
*
* RESTRICTION
* The src and the dst must be the same type and have same number
* of channels (1, 2, 3, or 4). They can be in MLIB_BIT, MLIB_BYTE,
* MLIB_SHORT, MLIB_USHORT or MLIB_INT data type.
* m >= 1, n >= 1,
* 0 <= dm < m, 0 <= dn < n.
* For data type MLIB_BYTE: 16 <= scale <= 31 (to be compatible with VIS version)
* For data type MLIB_SHORT: 17 <= scale <= 32 (to be compatible with VIS version)
* For data type MLIB_USHORT: 17 <= scale <= 32 (to be compatible with VIS version)
* For data type MLIB_INT: scale >= 0
*/
#include "mlib_image.h"
#include "mlib_ImageCheck.h"
#include "mlib_ImageConv.h"
#include "mlib_ImageCreate.h"
#include "mlib_c_ImageConv.h"
#include "mlib_ImageClipping.h"
#include "mlib_ImageConvEdge.h"
/***************************************************************/
JNIEXPORT
mlib_status mlib_ImageConvMxN(mlib_image *dst,
const mlib_image *src,
const mlib_s32 *kernel,
mlib_s32 m,
mlib_s32 n,
mlib_s32 dm,
mlib_s32 dn,
mlib_s32 scale,
mlib_s32 cmask,
mlib_edge edge)
{
MLIB_IMAGE_CHECK(dst);
switch (mlib_ImageGetType(dst)) {
case MLIB_BYTE:
if (scale < 16 || scale > 31)
return MLIB_FAILURE;
break;
case MLIB_SHORT:
case MLIB_USHORT:
if (scale < 17 || scale > 32)
return MLIB_FAILURE;
break;
case MLIB_INT:
if (scale < 0)
return MLIB_FAILURE;
break;
default:
return MLIB_FAILURE;
}
return mlib_ImageConvMxN_f(dst, src, kernel, m, n, dm, dn, scale, cmask, edge);
}
/***************************************************************/
mlib_status mlib_ImageConvMxN_f(mlib_image *dst,
const mlib_image *src,
const void *kernel,
mlib_s32 m,
mlib_s32 n,
mlib_s32 dm,
mlib_s32 dn,
mlib_s32 scale,
mlib_s32 cmask,
mlib_edge edge)
{
mlib_image dst_i[1], src_i[1], dst_e[1], src_e[1];
mlib_type type;
mlib_s32 nchan, dx_l, dx_r, dy_t, dy_b;
mlib_s32 edg_sizes[8];
mlib_status ret;
if (m < 1 || n < 1 || dm < 0 || dm > m - 1 || dn < 0 || dn > n - 1)
return MLIB_FAILURE;
if (kernel == NULL)
return MLIB_NULLPOINTER;
ret =
mlib_ImageClippingMxN(dst_i, src_i, dst_e, src_e, edg_sizes, dst, src, m, n, dm, dn);
if (ret != MLIB_SUCCESS)
return ret;
nchan = mlib_ImageGetChannels(dst);
type = mlib_ImageGetType(dst);
if (nchan == 1)
cmask = 1;
if ((cmask & ((1 << nchan) - 1)) == 0)
return MLIB_SUCCESS;
dx_l = edg_sizes[0];
dx_r = edg_sizes[1];
dy_t = edg_sizes[2];
dy_b = edg_sizes[3];
if (dx_l + dx_r + dy_t + dy_b == 0)
edge = MLIB_EDGE_DST_NO_WRITE;
if (edge != MLIB_EDGE_SRC_EXTEND) {
if (mlib_ImageGetWidth(dst_i) >= m && mlib_ImageGetHeight(dst_i) >= n) {
switch (type) {
case MLIB_BYTE:
ret = mlib_convMxNnw_u8(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
break;
case MLIB_SHORT:
#ifdef __sparc
ret = mlib_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
#else
if (mlib_ImageConvVersion(m, n, scale, type) == 0)
ret = mlib_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
else
ret = mlib_i_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
#endif /* __sparc */
break;
case MLIB_USHORT:
#ifdef __sparc
ret = mlib_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
#else
if (mlib_ImageConvVersion(m, n, scale, type) == 0)
ret = mlib_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
else
ret = mlib_i_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
#endif /* __sparc */
break;
case MLIB_INT:
ret = mlib_convMxNnw_s32(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
break;
case MLIB_FLOAT:
ret = mlib_convMxNnw_f32(dst_i, src_i, kernel, m, n, dm, dn, cmask);
break;
case MLIB_DOUBLE:
ret = mlib_convMxNnw_d64(dst_i, src_i, kernel, m, n, dm, dn, cmask);
break;
default:
/* For some reasons, there is no convolution routine for type MLIB_BIT.
* For now, we silently ignore it (because this image type is not used by java),
* but probably we have to report an error.
*/
break;
}
}
switch (edge) {
case MLIB_EDGE_DST_FILL_ZERO:
mlib_ImageConvZeroEdge(dst_e, dx_l, dx_r, dy_t, dy_b, cmask);
break;
case MLIB_EDGE_DST_COPY_SRC:
mlib_ImageConvCopyEdge(dst_e, src_e, dx_l, dx_r, dy_t, dy_b, cmask);
break;
default:
/* Other edge conditions do not need additional handling.
* Note also that they are not exposed in public Java API
*/
break;
}
}
else { /* MLIB_EDGE_SRC_EXTEND */
/* adjust src_e image */
mlib_ImageSetSubimage(src_e, src_e, dx_l - dm, dy_t - dn,
mlib_ImageGetWidth(src_e), mlib_ImageGetHeight(src_e));
switch (type) {
case MLIB_BYTE:
ret =
mlib_convMxNext_u8(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
cmask);
break;
case MLIB_SHORT:
#ifdef __sparc
ret =
mlib_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
cmask);
#else
if (mlib_ImageConvVersion(m, n, scale, type) == 0)
ret =
mlib_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
cmask);
else
ret =
mlib_i_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b,
scale, cmask);
#endif /* __sparc */
break;
case MLIB_USHORT:
#ifdef __sparc
ret =
mlib_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
cmask);
#else
if (mlib_ImageConvVersion(m, n, scale, type) == 0)
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