1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* $XConsortium: jcexpand.c,v 1.4 94/04/17 20:35:28 rws Exp $ */
/* Module jcexpand.c */
/****************************************************************************
Copyright (c) 1993, 1994 X Consortium
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.
NOTICE
This software is being provided by AGE Logic, Inc. under the
following license. By obtaining, using and/or copying this software,
you agree that you have read, understood, and will comply with these
terms and conditions:
Permission to use, copy, modify, distribute and sell this
software and its documentation for any purpose and without
fee or royalty and to grant others any or all rights granted
herein is hereby granted, provided that you agree to comply
with the following copyright notice and statements, including
the disclaimer, and that the same appears on all copies and
derivative works of the software and documentation you make.
"Copyright 1993, 1994 by AGE Logic, Inc."
THIS SOFTWARE IS PROVIDED "AS IS". AGE LOGIC MAKES NO
REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. By way of
example, but not limitation, AGE LOGIC MAKE NO
REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE OR THAT THE SOFTWARE DOES NOT
INFRINGE THIRD-PARTY PROPRIETARY RIGHTS. AGE LOGIC
SHALL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE. IN NO
EVENT SHALL EITHER PARTY BE LIABLE FOR ANY INDIRECT,
INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS
OF PROFITS, REVENUE, DATA OR USE, INCURRED BY EITHER PARTY OR
ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT OR
BASED ON A WARRANTY, EVEN IF AGE LOGIC LICENSEES
HEREUNDER HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
The name of AGE Logic, Inc. may not be used in
advertising or publicity pertaining to this software without
specific, written prior permission from AGE Logic.
Title to this software shall at all times remain with AGE
Logic, Inc.
*****************************************************************************
Gary Rogers, AGE Logic, Inc., October 1993
Gary Rogers, AGE Logic, Inc., January 1994
****************************************************************************/
/*
* jcexpand.c
*
* Copyright (C) 1991, 1992, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains image edge-expansion routines.
* These routines are invoked via the edge_expand method.
*/
#include "jinclude.h"
/*
* Expand an image so that it is a multiple of the MCU dimensions.
* This is to be accomplished by duplicating the rightmost column
* and/or bottommost row of pixels. The image has not yet been
* downsampled, so all components have the same dimensions.
*/
METHODDEF void
#ifdef XIE_SUPPORTED
#if NeedFunctionPrototypes
edge_expand (compress_info_ptr cinfo,
long input_cols, int input_rows,
long output_cols, int output_rows,
JSAMPIMAGE image_data)
#else
edge_expand (cinfo, input_cols, input_rows, output_cols, output_rows, image_data)
compress_info_ptr cinfo;
long input_cols;
int input_rows;
long output_cols;
int output_rows;
JSAMPIMAGE image_data;
#endif /* NeedFunctionPrototypes */
#else
edge_expand (compress_info_ptr cinfo,
long input_cols, int input_rows,
long output_cols, int output_rows,
JSAMPIMAGE image_data)
#endif /* XIE_SUPPORTED */
{
/* Expand horizontally */
if (input_cols < output_cols) {
register JSAMPROW ptr;
register JSAMPLE pixval;
register long count;
register int row;
short ci;
long numcols = output_cols - input_cols;
for (ci = 0; ci < cinfo->num_components; ci++) {
for (row = 0; row < input_rows; row++) {
ptr = image_data[ci][row] + (input_cols-1);
pixval = GETJSAMPLE(*ptr++);
for (count = numcols; count > 0; count--)
*ptr++ = pixval;
}
}
}
/* Expand vertically */
/* This happens only once at the bottom of the image, */
/* so it needn't be super-efficient */
if (input_rows < output_rows) {
register int row;
short ci;
JSAMPARRAY this_component;
for (ci = 0; ci < cinfo->num_components; ci++) {
this_component = image_data[ci];
for (row = input_rows; row < output_rows; row++) {
jcopy_sample_rows(this_component, input_rows-1, this_component, row,
1, output_cols);
}
}
}
}
/*
* The method selection routine for edge expansion.
*/
GLOBAL void
#ifdef XIE_SUPPORTED
#if NeedFunctionPrototypes
jselexpand (compress_info_ptr cinfo)
#else
jselexpand (cinfo)
compress_info_ptr cinfo;
#endif /* NeedFunctionPrototypes */
#else
jselexpand (compress_info_ptr cinfo)
#endif /* XIE_SUPPORTED */
{
/* just one implementation for now */
cinfo->methods->edge_expand = edge_expand;
}
|
