| /* |
| * Copyright (c) 1997, 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. |
| */ |
| |
| |
| /* |
| * FUNCTIONS |
| * mlib_ImageConvCopyEdge - Copy src edges to dst edges |
| * |
| * |
| * SYNOPSIS |
| * mlib_status mlib_ImageConvCopyEdge(mlib_image *dst, |
| * const mlib_image *src, |
| * mlib_s32 dx_l, |
| * mlib_s32 dx_r, |
| * mlib_s32 dy_t, |
| * mlib_s32 dy_b, |
| * mlib_s32 cmask) |
| * |
| * ARGUMENT |
| * dst Pointer to an dst image. |
| * src Pointer to an src image. |
| * dx_l Number of columns on the left side of the |
| * image to be copyed. |
| * dx_r Number of columns on the right side of the |
| * image to be copyed. |
| * dy_t Number of rows on the top edge of the |
| * image to be copyed. |
| * dy_b Number of rows on the top edge of the |
| * image to be copyed. |
| * 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. |
| * |
| * RESTRICTION |
| * The src and the dst must be the same type, same width, same height and have same number |
| * of channels (1, 2, 3, or 4). The unselected channels are not |
| * overwritten. If both src and dst have just one channel, |
| * cmask is ignored. |
| * |
| * DESCRIPTION |
| * Copy src edges to dst edges. |
| * |
| * The unselected channels are not overwritten. |
| * If src and dst have just one channel, |
| * cmask is ignored. |
| */ |
| |
| #include "mlib_image.h" |
| #include "mlib_ImageConvEdge.h" |
| |
| /***************************************************************/ |
| #define EDGES(chan, type, mask) \ |
| { \ |
| type *pdst = (type *) mlib_ImageGetData(dst); \ |
| type *psrc = (type *) mlib_ImageGetData(src); \ |
| mlib_s32 dst_stride = mlib_ImageGetStride(dst) / sizeof(type); \ |
| mlib_s32 src_stride = mlib_ImageGetStride(src) / sizeof(type); \ |
| mlib_s32 i, j, l; \ |
| mlib_s32 testchan; \ |
| \ |
| testchan = 1; \ |
| for (l = chan - 1; l >= 0; l--) { \ |
| if ((mask & testchan) == 0) { \ |
| testchan <<= 1; \ |
| continue; \ |
| } \ |
| testchan <<= 1; \ |
| for (j = 0; j < dx_l; j++) { \ |
| for (i = dy_t; i < (img_height - dy_b); i++) { \ |
| pdst[i*dst_stride + l + j*chan] = psrc[i*src_stride + l + j*chan]; \ |
| } \ |
| } \ |
| for (j = 0; j < dx_r; j++) { \ |
| for (i = dy_t; i < (img_height - dy_b); i++) { \ |
| pdst[i*dst_stride + l+(img_width-1 - j)*chan] = \ |
| psrc[i*src_stride + l+(img_width-1 - j)*chan]; \ |
| } \ |
| } \ |
| for (i = 0; i < dy_t; i++) { \ |
| for (j = 0; j < img_width; j++) { \ |
| pdst[i*dst_stride + l + j*chan] = psrc[i*src_stride + l + j*chan]; \ |
| } \ |
| } \ |
| for (i = 0; i < dy_b; i++) { \ |
| for (j = 0; j < img_width; j++) { \ |
| pdst[(img_height-1 - i)*dst_stride + l + j*chan] = \ |
| psrc[(img_height-1 - i)*src_stride + l + j*chan]; \ |
| } \ |
| } \ |
| } \ |
| } |
| |
| /***************************************************************/ |
| mlib_status mlib_ImageConvCopyEdge(mlib_image *dst, |
| const mlib_image *src, |
| mlib_s32 dx_l, |
| mlib_s32 dx_r, |
| mlib_s32 dy_t, |
| mlib_s32 dy_b, |
| mlib_s32 cmask) |
| { |
| mlib_s32 img_width = mlib_ImageGetWidth(dst); |
| mlib_s32 img_height = mlib_ImageGetHeight(dst); |
| mlib_s32 channel = mlib_ImageGetChannels(dst); |
| |
| if (dx_l + dx_r > img_width) { |
| dx_l = img_width; |
| dx_r = 0; |
| } |
| |
| if (dy_t + dy_b > img_height) { |
| dy_t = img_height; |
| dy_b = 0; |
| } |
| |
| if (channel == 1) |
| cmask = 1; |
| |
| switch (mlib_ImageGetType(src)) { |
| case MLIB_BIT: |
| return mlib_ImageConvCopyEdge_Bit(dst, src, dx_l, dx_r, dy_t, dy_b, cmask); |
| case MLIB_BYTE: |
| EDGES(channel, mlib_u8, cmask) |
| break; |
| case MLIB_SHORT: |
| case MLIB_USHORT: |
| EDGES(channel, mlib_u16, cmask) |
| break; |
| case MLIB_INT: |
| case MLIB_FLOAT: |
| EDGES(channel, mlib_u32, cmask) |
| break; |
| case MLIB_DOUBLE: |
| EDGES(channel, mlib_d64, cmask) |
| break; |
| default: |
| return MLIB_FAILURE; |
| } |
| |
| return MLIB_SUCCESS; |
| } |
| |
| /***************************************************************/ |
