| /* |
| * 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; |
| } |
| |
| /***************************************************************/ |
