1/*
2 * Copyright (c) 1997, 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_ImageConvClearEdge - Set edge of an image to a specific color.
30 *
31 * SYNOPSIS
32 * mlib_status mlib_ImageConvClearEdge(mlib_image *dst,
33 * mlib_s32 dx_l,
34 * mlib_s32 dx_r,
35 * mlib_s32 dy_t,
36 * mlib_s32 dy_b,
37 * const mlib_s32 *color,
38 * mlib_s32 cmask)
39 *
40 * ARGUMENT
41 * dst Pointer to an image.
42 * dx_l Number of columns on the left side of the
43 * image to be cleared.
44 * dx_r Number of columns on the right side of the
45 * image to be cleared.
46 * dy_t Number of rows on the top edge of the
47 * image to be cleared.
48 * dy_b Number of rows on the top edge of the
49 * image to be cleared.
50 * color Pointer to the color that the edges are set to.
51 * cmask Channel mask to indicate the channels to be convolved.
52 * Each bit of which represents a channel in the image. The
53 * channels corresponded to 1 bits are those to be processed.
54 *
55 * RESTRICTION
56 * dst can have 1, 2, 3 or 4 channels of MLIB_BYTE or MLIB_SHORT or MLIB_INT
57 * data type.
58 *
59 * DESCRIPTION
60 * Set edge of an image to a specific color. (VIS version)
61 * The unselected channels are not overwritten.
62 * If src and dst have just one channel,
63 * cmask is ignored.
64 */
65
66#include "mlib_image.h"
67#include "mlib_ImageConvEdge.h"
68
69/***************************************************************/
70#define EDGES(chan, type, mask) \
71 { \
72 type *pdst = (type *) mlib_ImageGetData(dst); \
73 type color_i; \
74 mlib_s32 dst_stride = mlib_ImageGetStride(dst) / sizeof(type); \
75 mlib_s32 i, j, l; \
76 mlib_s32 testchan; \
77 \
78 testchan = 1; \
79 for (l = chan - 1; l >= 0; l--) { \
80 if ((mask & testchan) == 0) { \
81 testchan <<= 1; \
82 continue; \
83 } \
84 testchan <<= 1; \
85 color_i = (type)color[l]; \
86 for (j = 0; j < dx_l; j++) { \
87 for (i = dy_t; i < (dst_height - dy_b); i++) { \
88 pdst[i*dst_stride + l + j*chan] = color_i; \
89 } \
90 } \
91 for (j = 0; j < dx_r; j++) { \
92 for (i = dy_t; i < (dst_height - dy_b); i++) { \
93 pdst[i*dst_stride + l+(dst_width-1 - j)*chan] = color_i; \
94 } \
95 } \
96 for (i = 0; i < dy_t; i++) { \
97 for (j = 0; j < dst_width; j++) { \
98 pdst[i*dst_stride + l + j*chan] = color_i; \
99 } \
100 } \
101 for (i = 0; i < dy_b; i++) { \
102 for (j = 0; j < dst_width; j++) { \
103 pdst[(dst_height-1 - i)*dst_stride + l + j*chan] = color_i; \
104 } \
105 } \
106 } \
107 }
108
109/***************************************************************/
110mlib_status mlib_ImageConvClearEdge(mlib_image *dst,
111 mlib_s32 dx_l,
112 mlib_s32 dx_r,
113 mlib_s32 dy_t,
114 mlib_s32 dy_b,
115 const mlib_s32 *color,
116 mlib_s32 cmask)
117{
118 mlib_s32 dst_width = mlib_ImageGetWidth(dst);
119 mlib_s32 dst_height = mlib_ImageGetHeight(dst);
120 mlib_s32 channel = mlib_ImageGetChannels(dst);
121
122 if (dx_l + dx_r > dst_width) {
123 dx_l = dst_width;
124 dx_r = 0;
125 }
126
127 if (dy_t + dy_b > dst_height) {
128 dy_t = dst_height;
129 dy_b = 0;
130 }
131
132 if (channel == 1)
133 cmask = 1;
134
135 switch (mlib_ImageGetType(dst)) {
136 case MLIB_BIT:
137 return mlib_ImageConvClearEdge_Bit(dst, dx_l, dx_r, dy_t, dy_b, color, cmask);
138 case MLIB_BYTE:
139 EDGES(channel, mlib_u8, cmask)
140 break;
141 case MLIB_SHORT:
142 case MLIB_USHORT:
143 EDGES(channel, mlib_s16, cmask)
144 break;
145 case MLIB_INT:
146 EDGES(channel, mlib_s32, cmask)
147 break;
148 default:
149 return MLIB_FAILURE;
150 }
151
152 return MLIB_SUCCESS;
153}
154
155/***************************************************************/
156mlib_status mlib_ImageConvZeroEdge(mlib_image *dst,
157 mlib_s32 dx_l,
158 mlib_s32 dx_r,
159 mlib_s32 dy_t,
160 mlib_s32 dy_b,
161 mlib_s32 cmask)
162{
163 mlib_d64 zero[4] = { 0, 0, 0, 0 };
164 mlib_type type = mlib_ImageGetType(dst);
165
166 if (type == MLIB_FLOAT || type == MLIB_DOUBLE) {
167 return mlib_ImageConvClearEdge_Fp(dst, dx_l, dx_r, dy_t, dy_b, zero, cmask);
168 }
169 else {
170 return mlib_ImageConvClearEdge(dst, dx_l, dx_r, dy_t, dy_b, (mlib_s32 *) zero, cmask);
171 }
172}
173
174/***************************************************************/
175