/*
* Copyright (c) 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_ImageConvClearEdge_BIt - Set edge of an bit type image to a specific
* color.
*
* SYNOPSIS
* mlib_status mlib_ImageConvClearEdge_Bit(mlib_image *img,
* mlib_s32 dx_l,
* mlib_32 dx_r,
* mlib_s32 dy_t,
* mlib_32 dy_b,
* const mlib_s32 *color,
* mlib_s32 cmask);
*
* ARGUMENT
* img Pointer to an image.
* dx_l Number of columns on the left side of the
* image to be cleared.
* dx_r Number of columns on the right side of the
* image to be cleared.
* dy_t Number of rows on the top edge of the
* image to be cleared.
* dy_b Number of rows on the top edge of the
* image to be cleared.
* color Pointer to the color that the edges are set to.
* 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
* img can have 1 channels of MLIB_BIT data type.
*
* DESCRIPTION
* Set edge of an image to a specific color.
* 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"
/***************************************************************/
mlib_status mlib_ImageConvClearEdge_Bit(mlib_image *img,
mlib_s32 dx_l,
mlib_s32 dx_r,
mlib_s32 dy_t,
mlib_s32 dy_b,
const mlib_s32 *color,
mlib_s32 cmask)
{
mlib_u8 *pimg = mlib_ImageGetData(img), *pd;
mlib_s32 img_height = mlib_ImageGetHeight(img);
mlib_s32 img_width = mlib_ImageGetWidth(img);
mlib_s32 img_stride = mlib_ImageGetStride(img);
mlib_s32 bitoff = mlib_ImageGetBitOffset(img);
mlib_s32 bitoff_end;
mlib_u8 color_i, mask, mask_end, tmp_color;
mlib_u8 tmp_start, tmp_end;
mlib_s32 i, j, amount;
if ((mlib_ImageGetType(img) != MLIB_BIT) || (mlib_ImageGetChannels(img) != 1))
return MLIB_FAILURE;
color_i = (mlib_u8)(color[0] & 1);
color_i |= (color_i << 1);
color_i |= (color_i << 2);
color_i |= (color_i << 4);
pd = pimg;
if (dx_l > 0) {
if (bitoff + dx_l <= 8) {
mask = (0xFF >> bitoff) & (0xFF << ((8 - (bitoff + dx_l)) & 7));
tmp_color = color_i & mask;
mask = ~mask;
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
}
} else {
mask = (0xFF >> bitoff);
tmp_color = color_i & mask;
mask = ~mask;
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
}
amount = (bitoff + dx_l + 7) >> 3;
mask = (0xFF << ((8 - (bitoff + dx_l)) & 7));
tmp_color = color_i & mask;
mask = ~mask;
for (j = 1; j < amount - 1; j++) {
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride + j] = color_i;
}
}
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride + amount - 1] = (pd[i*img_stride + amount - 1] & mask) | tmp_color;
}
}
}
if (dx_r > 0) {
pd = pimg + (img_width + bitoff - dx_r) / 8;
bitoff = (img_width + bitoff - dx_r) & 7;
if (bitoff + dx_r <= 8) {
mask = (0xFF >> bitoff) & (0xFF << ((8 - (bitoff + dx_r)) & 7));
tmp_color = color_i & mask;
mask = ~mask;
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
}
} else {
mask = (0xFF >> bitoff);
tmp_color = color_i & mask;
mask = ~mask;
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride] = (pd[i*img_stride] & mask) | tmp_color;
}
amount = (bitoff + dx_r + 7) >> 3;
mask = (0xFF << ((8 - (bitoff + dx_r)) & 7));
tmp_color = color_i & mask;
mask = ~mask;
for (j = 1; j < amount - 1; j++) {
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride + j] = color_i;
}
}
for (i = dy_t; i < (img_height - dy_b); i++) {
pd[i*img_stride + amount - 1] = (pd[i*img_stride + amount - 1] & mask) | tmp_color;
}
}
}
bitoff = mlib_ImageGetBitOffset(img);
bitoff_end = (bitoff + img_width) & 7;
amount = (bitoff + img_width + 7) >> 3;
mask = (0xFF >> bitoff);
mask_end = (0xFF << ((8 - bitoff_end) & 7));
pd = pimg;
for (i = 0; i < dy_t; i++) {
tmp_start = pd[i*img_stride];
tmp_end = pd[i*img_stride+amount-1];
for (j = 0; j < amount; j++) {
pd[i*img_stride + j] = color_i;
}
pd[i*img_stride] = (tmp_start & (~mask)) | (pd[i*img_stride] & mask);
pd[i*img_stride+amount-1] = (tmp_end & (~mask_end)) |
(pd[i*img_stride+amount-1] & mask_end);
}
pd = pimg + (img_height-1)*img_stride;
for (i = 0; i < dy_b; i++) {
tmp_start = pd[-i*img_stride];
tmp_end = pd[-i*img_stride+amount-1];
for (j = 0; j < amount; j++) {
pd[-i*img_stride + j] = color_i;
}
pd[-i*img_stride] = (tmp_start & (~mask)) | (pd[-i*img_stride] & mask);
pd[-i*img_stride+amount-1] = (tmp_end & (~mask_end)) |
(pd[-i*img_stride+amount-1] & mask_end);
}
return MLIB_SUCCESS;
}
/***************************************************************/