1/*
2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26
27/*
28 * FUNCTIONS
29 * mlib_c_ImageConvClearEdge - Set edge of an image to a specific
30 * color. (for float-point image)
31 *
32 * SYNOPSIS
33 * mlib_status mlib_c_ImageConvClearEdge_Fp(mlib_image *img,
34 * mlib_s32 dx_l,
35 * mlib_s32 dx_r,
36 * mlib_s32 dy_t,
37 * mlib_s32 dy_b,
38 * const mlib_d64 *color,
39 * mlib_s32 cmask)
40 *
41 * ARGUMENT
42 * img Pointer to an image.
43 * dx_l Number of columns on the left side of the
44 * image to be cleared.
45 * dx_r Number of columns on the right side of the
46 * image to be cleared.
47 * dy_t Number of rows on the top edge of the
48 * image to be cleared.
49 * dy_b Number of rows on the top edge of the
50 * image to be cleared.
51 * color Pointer to the color that the edges are set to.
52 * cmask Channel mask to indicate the channels to be convolved.
53 * Each bit of which represents a channel in the image. The
54 * channels corresponded to 1 bits are those to be processed.
55 *
56 * RESTRICTION
57 * img can have 1, 2, 3 or 4 channels of MLIB_FLOAT or MLIB_DOUBLE
58 * data type.
59 *
60 * DESCRIPTION
61 * Set edge of an image to a specific color.
62 * The unselected channels are not overwritten.
63 * If src and dst have just one channel,
64 * cmask is ignored.
65 */
66
67#include "mlib_image.h"
68#include "mlib_ImageConvEdge.h"
69
70/***************************************************************/
71#define EDGES(chan, type, mask) \
72{ \
73 type *pimg = (type *) mlib_ImageGetData(img); \
74 type color_i; \
75 mlib_s32 img_stride = mlib_ImageGetStride(img) / sizeof(type); \
76 mlib_s32 i, j, l; \
77 mlib_s32 testchan; \
78 \
79 testchan = 1; \
80 for (l = chan - 1; l >= 0; l--) { \
81 if ((mask & testchan) == 0) { \
82 testchan <<= 1; \
83 continue; \
84 } \
85 testchan <<= 1; \
86 color_i = (type) color[l]; \
87 for (j = 0; j < dx_l; j++) { \
88 for (i = dy_t; i < (img_height - dy_b); i++) { \
89 pimg[i * img_stride + l + j * chan] = color_i; \
90 } \
91 } \
92 for (j = 0; j < dx_r; j++) { \
93 for (i = dy_t; i < (img_height - dy_b); i++) { \
94 pimg[i * img_stride + l + (img_width - 1 - j) * chan] = color_i; \
95 } \
96 } \
97 for (i = 0; i < dy_t; i++) { \
98 for (j = 0; j < img_width; j++) { \
99 pimg[i * img_stride + l + j * chan] = color_i; \
100 } \
101 } \
102 for (i = 0; i < dy_b; i++) { \
103 for (j = 0; j < img_width; j++) { \
104 pimg[(img_height - 1 - i) * img_stride + l + j * chan] = color_i; \
105 } \
106 } \
107 } \
108}
109
110/***************************************************************/
111mlib_status mlib_ImageConvClearEdge_Fp(mlib_image *img,
112 mlib_s32 dx_l,
113 mlib_s32 dx_r,
114 mlib_s32 dy_t,
115 mlib_s32 dy_b,
116 const mlib_d64 *color,
117 mlib_s32 cmask)
118{
119 mlib_s32 img_width = mlib_ImageGetWidth(img);
120 mlib_s32 img_height = mlib_ImageGetHeight(img);
121 mlib_s32 channel = mlib_ImageGetChannels(img);
122
123 if (dx_l + dx_r > img_width) {
124 dx_l = img_width;
125 dx_r = 0;
126 }
127
128 if (dy_t + dy_b > img_height) {
129 dy_t = img_height;
130 dy_b = 0;
131 }
132
133 if (channel == 1) cmask = 1;
134
135 switch (mlib_ImageGetType(img)) {
136 case MLIB_FLOAT:
137 EDGES(channel,mlib_f32, cmask);
138 break;
139 case MLIB_DOUBLE:
140 EDGES(channel,mlib_d64, cmask);
141 break;
142 default:
143 return MLIB_FAILURE;
144 }
145
146 return MLIB_SUCCESS;
147}
148
149/***************************************************************/
150