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
|
/* Copyright (C) 1996 Aladdin Enterprises. All rights reserved.
This file is part of GNU Ghostscript.
GNU Ghostscript is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY. No author or distributor accepts responsibility to
anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing. Refer to
the GNU General Public License for full details.
Everyone is granted permission to copy, modify and redistribute GNU
Ghostscript, but only under the conditions described in the GNU General
Public License. A copy of this license is supposed to have been given to
you along with GNU Ghostscript so you can know your rights and
responsibilities. It should be in a file named COPYING. Among other
things, the copyright notice and this notice must be preserved on all
copies.
Aladdin Enterprises is not affiliated with the Free Software Foundation or
the GNU Project. GNU Ghostscript, as distributed by Aladdin Enterprises,
does not depend on any other GNU software.
*/
/* gdevmiff.c */
/* MIFF file format driver */
#include "gdevprn.h"
/* ------ The device descriptor ------ */
/*
* Default X and Y resolution.
*/
#define X_DPI 72
#define Y_DPI 72
private dev_proc_print_page(miff24_print_page);
private gx_device_procs miff24_procs =
prn_color_procs(gdev_prn_open, gdev_prn_output_page, gdev_prn_close,
gx_default_rgb_map_rgb_color, gx_default_rgb_map_color_rgb);
gx_device_printer far_data gs_miff24_device =
prn_device(miff24_procs, "miff24",
DEFAULT_WIDTH_10THS, DEFAULT_HEIGHT_10THS,
X_DPI, Y_DPI,
0,0,0,0, /* margins */
24, miff24_print_page);
/* Print one page in 24-bit RLE direct color format. */
private int
miff24_print_page(gx_device_printer *pdev, FILE *file)
{ int raster = gx_device_raster((gx_device *)pdev, true);
byte *line = (byte *)gs_malloc(raster, 1, "miff line buffer");
int y;
int code = 0; /* return code */
if ( line == 0 ) /* can't allocate line buffer */
return_error(gs_error_VMerror);
fputs("id=ImageMagick\n", file);
fputs("class=DirectClass\n", file);
fprintf(file, "columns=%d\n", pdev->width);
fputs("compression=RunlengthEncoded\n", file);
fprintf(file, "rows=%d\n", pdev->height);
fputs(":\n", file);
for ( y = 0; y < pdev->height; ++y )
{ byte *row;
byte *end;
code = gdev_prn_get_bits(pdev, y, line, &row);
if ( code < 0 )
break;
end = row + pdev->width * 3;
while ( row < end )
{ int count = 0;
while ( count < 255 && row < end - 3 &&
row[0] == row[3] && row[1] == row[4] &&
row[2] == row[5]
)
++count, row += 3;
putc(row[0], file);
putc(row[1], file);
putc(row[2], file);
putc(count, file);
row += 3;
}
}
gs_free((char *)line, lsize, 1, "miff line buffer");
return code;
}
|
