blob: 3f2cb33b2d20769555f5859dd4891c8f25a78a08 (
plain) (
blame)
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
|
/*
* The Python Imaging Library.
* $Id$
*
* encoder for EPS hex data
*
* history:
* 96-04-19 fl created
* 96-06-27 fl don't drop last block of encoded data
*
* notes:
* FIXME: rename to HexEncode.c ??
*
* Copyright (c) Fredrik Lundh 1996.
* Copyright (c) Secret Labs AB 1997.
*
* See the README file for information on usage and redistribution.
*/
#include "Imaging.h"
int
ImagingEpsEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) {
enum { HEXBYTE = 1, NEWLINE };
const char *hex = "0123456789abcdef";
UINT8 *ptr = buf;
UINT8 *in, i;
if (!state->state) {
state->state = HEXBYTE;
state->xsize *= im->pixelsize; /* Hack! */
}
in = (UINT8 *)im->image[state->y];
for (;;) {
if (state->state == NEWLINE) {
if (bytes < 1) {
break;
}
*ptr++ = '\n';
bytes--;
state->state = HEXBYTE;
}
if (bytes < 2) {
break;
}
i = in[state->x++];
*ptr++ = hex[(i >> 4) & 15];
*ptr++ = hex[i & 15];
bytes -= 2;
/* Skip junk bytes */
if (im->bands == 3 && (state->x & 3) == 3) {
state->x++;
}
if (++state->count >= 79 / 2) {
state->state = NEWLINE;
state->count = 0;
}
if (state->x >= state->xsize) {
state->x = 0;
if (++state->y >= state->ysize) {
state->errcode = IMAGING_CODEC_END;
break;
}
in = (UINT8 *)im->image[state->y];
}
}
return ptr - buf;
}
|
