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307 lines
11 KiB
C
307 lines
11 KiB
C
/*
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* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* FUNCTION
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* mlib_ImageConvMxN - image convolution with edge condition
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*
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* SYNOPSIS
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* mlib_status mlib_ImageConvMxN(mlib_image *dst,
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* const mlib_image *src,
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* const mlib_s32 *kernel,
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* mlib_s32 m,
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* mlib_s32 n,
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* mlib_s32 dm,
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* mlib_s32 dn,
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* mlib_s32 scale,
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* mlib_s32 cmask,
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* mlib_edge edge)
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*
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* ARGUMENTS
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* dst Pointer to destination image.
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* src Pointer to source image.
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* m Kernel width (m must be not less than 1).
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* n Kernel height (n must be not less than 1).
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* dm, dn Position of key element in convolution kernel.
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* kernel Pointer to convolution kernel.
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* scale The scaling factor to convert the input integer
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* coefficients into floating-point coefficients:
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* floating-point coefficient = integer coefficient * 2^(-scale)
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* cmask Channel mask to indicate the channels to be convolved.
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* Each bit of which represents a channel in the image. The
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* channels corresponded to 1 bits are those to be processed.
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* edge Type of edge condition.
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*
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* DESCRIPTION
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* 2-D convolution, MxN kernel.
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*
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* The center of the source image is mapped to the center of the
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* destination image.
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* The unselected channels are not overwritten. If both src and dst have
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* just one channel, cmask is ignored.
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*
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* The edge condition can be one of the following:
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* MLIB_EDGE_DST_NO_WRITE (default)
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* MLIB_EDGE_DST_FILL_ZERO
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* MLIB_EDGE_DST_COPY_SRC
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* MLIB_EDGE_SRC_EXTEND
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*
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* RESTRICTION
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* The src and the dst must be the same type and have same number
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* of channels (1, 2, 3, or 4). They can be in MLIB_BIT, MLIB_BYTE,
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* MLIB_SHORT, MLIB_USHORT or MLIB_INT data type.
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* m >= 1, n >= 1,
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* 0 <= dm < m, 0 <= dn < n.
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* For data type MLIB_BYTE: 16 <= scale <= 31 (to be compatible with VIS version)
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* For data type MLIB_SHORT: 17 <= scale <= 32 (to be compatible with VIS version)
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* For data type MLIB_USHORT: 17 <= scale <= 32 (to be compatible with VIS version)
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* For data type MLIB_INT: scale >= 0
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*/
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#include "mlib_image.h"
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#include "mlib_ImageCheck.h"
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#include "mlib_ImageConv.h"
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#include "mlib_ImageCreate.h"
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#include "mlib_c_ImageConv.h"
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#include "mlib_ImageClipping.h"
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#include "mlib_ImageConvEdge.h"
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/***************************************************************/
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JNIEXPORT mlib_status JNICALL mlib_ImageConvMxN(mlib_image *dst,
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const mlib_image *src,
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const mlib_s32 *kernel,
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mlib_s32 m,
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mlib_s32 n,
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mlib_s32 dm,
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mlib_s32 dn,
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mlib_s32 scale,
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mlib_s32 cmask,
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mlib_edge edge)
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{
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MLIB_IMAGE_CHECK(dst);
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switch (mlib_ImageGetType(dst)) {
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case MLIB_BYTE:
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if (scale < 16 || scale > 31)
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return MLIB_FAILURE;
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break;
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case MLIB_SHORT:
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case MLIB_USHORT:
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if (scale < 17 || scale > 32)
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return MLIB_FAILURE;
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break;
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case MLIB_INT:
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if (scale < 0)
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return MLIB_FAILURE;
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break;
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default:
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return MLIB_FAILURE;
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}
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return mlib_ImageConvMxN_f(dst, src, kernel, m, n, dm, dn, scale, cmask, edge);
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}
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/***************************************************************/
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mlib_status mlib_ImageConvMxN_f(mlib_image *dst,
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const mlib_image *src,
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const void *kernel,
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mlib_s32 m,
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mlib_s32 n,
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mlib_s32 dm,
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mlib_s32 dn,
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mlib_s32 scale,
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mlib_s32 cmask,
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mlib_edge edge)
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{
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mlib_image dst_i[1], src_i[1], dst_e[1], src_e[1];
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mlib_type type;
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mlib_s32 nchan, dx_l, dx_r, dy_t, dy_b;
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mlib_s32 edg_sizes[8];
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mlib_status ret;
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if (m < 1 || n < 1 || dm < 0 || dm > m - 1 || dn < 0 || dn > n - 1)
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return MLIB_FAILURE;
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if (kernel == NULL)
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return MLIB_NULLPOINTER;
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ret =
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mlib_ImageClippingMxN(dst_i, src_i, dst_e, src_e, edg_sizes, dst, src, m, n, dm, dn);
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if (ret != MLIB_SUCCESS)
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return ret;
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nchan = mlib_ImageGetChannels(dst);
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type = mlib_ImageGetType(dst);
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if (nchan == 1)
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cmask = 1;
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if ((cmask & ((1 << nchan) - 1)) == 0)
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return MLIB_SUCCESS;
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dx_l = edg_sizes[0];
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dx_r = edg_sizes[1];
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dy_t = edg_sizes[2];
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dy_b = edg_sizes[3];
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if (dx_l + dx_r + dy_t + dy_b == 0)
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edge = MLIB_EDGE_DST_NO_WRITE;
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if (edge != MLIB_EDGE_SRC_EXTEND) {
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if (mlib_ImageGetWidth(dst_i) >= m && mlib_ImageGetHeight(dst_i) >= n) {
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switch (type) {
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case MLIB_BYTE:
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ret = mlib_convMxNnw_u8(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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break;
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case MLIB_SHORT:
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#ifdef __sparc
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ret = mlib_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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#else
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if (mlib_ImageConvVersion(m, n, scale, type) == 0)
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ret = mlib_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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else
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ret = mlib_i_convMxNnw_s16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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#endif /* __sparc */
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break;
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case MLIB_USHORT:
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#ifdef __sparc
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ret = mlib_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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#else
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if (mlib_ImageConvVersion(m, n, scale, type) == 0)
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ret = mlib_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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else
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ret = mlib_i_convMxNnw_u16(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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#endif /* __sparc */
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break;
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case MLIB_INT:
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ret = mlib_convMxNnw_s32(dst_i, src_i, kernel, m, n, dm, dn, scale, cmask);
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break;
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case MLIB_FLOAT:
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ret = mlib_convMxNnw_f32(dst_i, src_i, kernel, m, n, dm, dn, cmask);
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break;
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case MLIB_DOUBLE:
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ret = mlib_convMxNnw_d64(dst_i, src_i, kernel, m, n, dm, dn, cmask);
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break;
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default:
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/* For some reasons, there is no convolution routine for type MLIB_BIT.
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* For now, we silently ignore it (because this image type is not used by java),
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* but probably we have to report an error.
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*/
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break;
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}
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}
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switch (edge) {
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case MLIB_EDGE_DST_FILL_ZERO:
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mlib_ImageConvZeroEdge(dst_e, dx_l, dx_r, dy_t, dy_b, cmask);
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break;
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case MLIB_EDGE_DST_COPY_SRC:
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mlib_ImageConvCopyEdge(dst_e, src_e, dx_l, dx_r, dy_t, dy_b, cmask);
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break;
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default:
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/* Other edge conditions do not need additional handling.
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* Note also that they are not exposed in public Java API
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*/
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break;
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}
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}
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else { /* MLIB_EDGE_SRC_EXTEND */
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/* adjust src_e image */
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mlib_ImageSetSubimage(src_e, src_e, dx_l - dm, dy_t - dn,
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mlib_ImageGetWidth(src_e), mlib_ImageGetHeight(src_e));
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switch (type) {
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case MLIB_BYTE:
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ret =
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mlib_convMxNext_u8(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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break;
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case MLIB_SHORT:
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#ifdef __sparc
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ret =
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mlib_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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#else
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if (mlib_ImageConvVersion(m, n, scale, type) == 0)
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ret =
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mlib_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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else
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ret =
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mlib_i_convMxNext_s16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b,
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scale, cmask);
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#endif /* __sparc */
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break;
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case MLIB_USHORT:
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#ifdef __sparc
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ret =
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mlib_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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#else
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if (mlib_ImageConvVersion(m, n, scale, type) == 0)
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ret =
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mlib_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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else
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ret =
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mlib_i_convMxNext_u16(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b,
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scale, cmask);
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#endif /* __sparc */
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break;
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case MLIB_INT:
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ret =
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mlib_convMxNext_s32(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, scale,
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cmask);
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break;
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case MLIB_FLOAT:
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mlib_convMxNext_f32(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, cmask);
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break;
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case MLIB_DOUBLE:
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mlib_convMxNext_d64(dst_e, src_e, kernel, m, n, dx_l, dx_r, dy_t, dy_b, cmask);
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break;
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default:
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/* For some reasons, there is no convolution routine for type MLIB_BIT.
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* For now, we silently ignore it (because this image type is not used by java),
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* but probably we have to report an error.
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*/
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break;
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}
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}
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return ret;
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}
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/***************************************************************/
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