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
|
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* convertformat.c
*
* Converts an image file from one format to another.
*
* Syntax: convertformat filein fileout [format]
*
* where format is one of these:
*
* BMP
* JPEG (only applicable for 8 bpp or rgb)
* PNG
* TIFF
* TIFF_G4 (only applicable for 1 bpp)
* PNM
*
* The output format can be chosen by the extension of fileout:
* BMP .bmp
* JPEG .jpg
* PNG .png
* TIFF .tif
* TIFF_G4 .tif
* PNM .pnm
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "allheaders.h"
main(int argc,
char **argv)
{
PIX *pixs;
char *filein, *fileout, *format, *base, *ext;
char error_msg[] = "Valid formats: BMP, JPEG, PNG, TIFF, TIFF_G4, PNM";
l_int32 d;
static char mainName[] = "convertformat";
if (argc != 3 && argc != 4) {
fprintf(stderr, "Syntax: convertformat filein fileout [format]\n");
fprintf(stderr, "%s\n", error_msg);
fprintf(stderr, "If you don't specify a format, the output file needs");
fprintf(stderr, " an extension such as:\n");
fprintf(stderr, " .bmp, .jpg, .png, .tif or .pnm\n");
return 1;
}
filein = argv[1];
fileout = argv[2];
if (argc == 3) {
splitPathAtExtension(fileout, NULL, &ext);
if (!strcmp(ext, ".bmp"))
format = "BMP";
else if (!strcmp(ext, ".jpg"))
format = "JPEG";
else if (!strcmp(ext, ".png"))
format = "PNG";
else if (!strcmp(ext, ".tif"))
format = "TIFF_G4";
else if (!strcmp(ext, ".pnm"))
format = "PNM";
else
return ERROR_INT(error_msg, mainName, 1);
FREE(ext);
}
else
format = argv[3];
pixs = pixRead(filein);
d = pixGetDepth(pixs);
if (d != 1 && !strcmp(format, "TIFF_G4")) {
L_WARNING("can't convert to tiff_g4; converting to tiff", mainName);
format = "TIFF";
}
if (d < 8 && !strcmp(format, "JPEG")) {
L_WARNING("can't convert to jpeg; converting to png", mainName);
splitPathAtExtension(fileout, &base, &ext);
fileout = stringJoin(base, ".png");
format = "PNG";
}
if (strcmp(format, "BMP") == 0)
pixWrite(fileout, pixs, IFF_BMP);
else if (strcmp(format, "JPEG") == 0)
pixWrite(fileout, pixs, IFF_JFIF_JPEG);
else if (strcmp(format, "PNG") == 0)
pixWrite(fileout, pixs, IFF_PNG);
else if (strcmp(format, "TIFF") == 0)
pixWrite(fileout, pixs, IFF_TIFF);
else if (strcmp(format, "TIFF_G4") == 0)
pixWrite(fileout, pixs, IFF_TIFF_G4);
else if (strcmp(format, "PNM") == 0)
pixWrite(fileout, pixs, IFF_PNM);
else
return ERROR_INT(error_msg, mainName, 1);
return 0;
}
|
