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211 lines
7.1 KiB
C
211 lines
7.1 KiB
C
/*
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* Copyright (c) 2003, 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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* FUNCTIONS
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* mlib_ImageConvClearEdge_BIt - Set edge of an bit type image to a specific
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* color.
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*
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* SYNOPSIS
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* mlib_status mlib_ImageConvClearEdge_Bit(mlib_image *img,
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* mlib_s32 dx_l,
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* mlib_32 dx_r,
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* mlib_s32 dy_t,
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* mlib_32 dy_b,
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* const mlib_s32 *color,
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* mlib_s32 cmask);
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*
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* ARGUMENT
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* img Pointer to an image.
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* dx_l Number of columns on the left side of the
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* image to be cleared.
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* dx_r Number of columns on the right side of the
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* image to be cleared.
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* dy_t Number of rows on the top edge of the
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* image to be cleared.
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* dy_b Number of rows on the top edge of the
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* image to be cleared.
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* color Pointer to the color that the edges are set to.
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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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*
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* RESTRICTION
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* img can have 1 channels of MLIB_BIT data type.
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*
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* DESCRIPTION
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* Set edge of an image to a specific color.
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* The unselected channels are not overwritten.
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* If src and dst have just one channel,
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* cmask is ignored.
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*/
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#include "mlib_image.h"
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#include "mlib_ImageConvEdge.h"
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/***************************************************************/
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mlib_status mlib_ImageConvClearEdge_Bit(mlib_image *img,
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mlib_s32 dx_l,
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mlib_s32 dx_r,
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mlib_s32 dy_t,
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mlib_s32 dy_b,
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const mlib_s32 *color,
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mlib_s32 cmask)
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{
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mlib_u8 *pimg = mlib_ImageGetData(img), *pd;
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mlib_s32 img_height = mlib_ImageGetHeight(img);
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mlib_s32 img_width = mlib_ImageGetWidth(img);
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mlib_s32 img_stride = mlib_ImageGetStride(img);
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mlib_s32 bitoff = mlib_ImageGetBitOffset(img);
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mlib_s32 bitoff_end;
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mlib_u8 color_i, mask, mask_end, tmp_color;
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mlib_u8 tmp_start, tmp_end;
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mlib_s32 i, j, amount;
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if ((mlib_ImageGetType(img) != MLIB_BIT) || (mlib_ImageGetChannels(img) != 1))
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return MLIB_FAILURE;
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color_i = (mlib_u8)(color[0] & 1);
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color_i |= (color_i << 1);
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color_i |= (color_i << 2);
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color_i |= (color_i << 4);
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pd = pimg;
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if (dx_l > 0) {
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if (bitoff + dx_l <= 8) {
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mask = (0xFF >> bitoff) & (0xFF << ((8 - (bitoff + dx_l)) & 7));
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tmp_color = color_i & mask;
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mask = ~mask;
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
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}
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} else {
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mask = (0xFF >> bitoff);
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tmp_color = color_i & mask;
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mask = ~mask;
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
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}
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amount = (bitoff + dx_l + 7) >> 3;
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mask = (0xFF << ((8 - (bitoff + dx_l)) & 7));
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tmp_color = color_i & mask;
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mask = ~mask;
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for (j = 1; j < amount - 1; j++) {
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride + j] = color_i;
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}
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}
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride + amount - 1] = (pd[i*img_stride + amount - 1] & mask) | tmp_color;
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}
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}
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}
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if (dx_r > 0) {
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pd = pimg + (img_width + bitoff - dx_r) / 8;
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bitoff = (img_width + bitoff - dx_r) & 7;
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if (bitoff + dx_r <= 8) {
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mask = (0xFF >> bitoff) & (0xFF << ((8 - (bitoff + dx_r)) & 7));
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tmp_color = color_i & mask;
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mask = ~mask;
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
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}
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} else {
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mask = (0xFF >> bitoff);
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tmp_color = color_i & mask;
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mask = ~mask;
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
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}
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amount = (bitoff + dx_r + 7) >> 3;
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mask = (0xFF << ((8 - (bitoff + dx_r)) & 7));
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tmp_color = color_i & mask;
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mask = ~mask;
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for (j = 1; j < amount - 1; j++) {
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride + j] = color_i;
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}
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}
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for (i = dy_t; i < (img_height - dy_b); i++) {
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pd[i*img_stride + amount - 1] = (pd[i*img_stride + amount - 1] & mask) | tmp_color;
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}
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}
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}
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bitoff = mlib_ImageGetBitOffset(img);
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bitoff_end = (bitoff + img_width) & 7;
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amount = (bitoff + img_width + 7) >> 3;
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mask = (0xFF >> bitoff);
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mask_end = (0xFF << ((8 - bitoff_end) & 7));
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pd = pimg;
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for (i = 0; i < dy_t; i++) {
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tmp_start = pd[i*img_stride];
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tmp_end = pd[i*img_stride+amount-1];
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for (j = 0; j < amount; j++) {
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pd[i*img_stride + j] = color_i;
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}
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pd[i*img_stride] = (tmp_start & (~mask)) | (pd[i*img_stride] & mask);
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pd[i*img_stride+amount-1] = (tmp_end & (~mask_end)) |
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(pd[i*img_stride+amount-1] & mask_end);
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}
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pd = pimg + (img_height-1)*img_stride;
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for (i = 0; i < dy_b; i++) {
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tmp_start = pd[-i*img_stride];
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tmp_end = pd[-i*img_stride+amount-1];
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for (j = 0; j < amount; j++) {
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pd[-i*img_stride + j] = color_i;
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}
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pd[-i*img_stride] = (tmp_start & (~mask)) | (pd[-i*img_stride] & mask);
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pd[-i*img_stride+amount-1] = (tmp_end & (~mask_end)) |
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(pd[-i*img_stride+amount-1] & mask_end);
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}
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return MLIB_SUCCESS;
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}
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/***************************************************************/
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