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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* Copyright 1992 Washington State University. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted.
* This software is provided "as is" without express or implied warranty.
*/
/* Driver for the Tektronix 4693d color plotter. */
#include "gdevprn.h"
#define prn_dev ((gx_device_printer *)dev) /* needed in 5.31 et seq */
/* Thanks to Karl Hakimian (hakimian@yoda.eecs.wsu.edu) */
/* for contributing this code to Aladdin Enterprises. */
#define X_DPI 100
#define Y_DPI 100
#define WIDTH_10THS 85
#define HEIGHT_10THS 110
static dev_proc_print_page(t4693d_print_page);
static dev_proc_map_rgb_color(gdev_t4693d_map_rgb_color);
static dev_proc_map_color_rgb(gdev_t4693d_map_color_rgb);
static void
t4693d_initialize_device_procs(gx_device *dev)
{
gdev_prn_initialize_device_procs(dev);
set_dev_proc(dev, output_page, gdev_prn_bg_output_page);
set_dev_proc(dev, map_rgb_color, gdev_t4693d_map_rgb_color);
set_dev_proc(dev, map_color_rgb, gdev_t4693d_map_color_rgb);
set_dev_proc(dev, encode_color, gdev_t4693d_map_rgb_color);
set_dev_proc(dev, decode_color, gdev_t4693d_map_color_rgb);
}
/* Since the print_page doesn't alter the device, this device can print in the background */
#define t4693d_prn_device(name,depth,max_rgb) {prn_device_body( \
gx_device_printer,t4693d_initialize_device_procs,name, \
WIDTH_10THS, HEIGHT_10THS, X_DPI, Y_DPI, 0.25, 0.25, 0.25, 0.25, \
3,depth,max_rgb,max_rgb,max_rgb + 1,max_rgb + 1, \
t4693d_print_page)}
const gx_device_printer gs_t4693d2_device = t4693d_prn_device("t4693d2",8, 3);
const gx_device_printer gs_t4693d4_device = t4693d_prn_device("t4693d4",16, 15);
const gx_device_printer gs_t4693d8_device = t4693d_prn_device("t4693d8",24, 255);
static gx_color_index
gdev_t4693d_map_rgb_color(gx_device *dev, const gx_color_value cv[])
{
ushort bitspercolor = prn_dev->color_info.depth / 3;
ulong max_value = (1 << bitspercolor) - 1;
gx_color_value r, g, b;
r = cv[0]; g = cv[1]; b = cv[2];
if (bitspercolor == 5) {
bitspercolor--;
max_value = (1 << bitspercolor) - 1;
}
return ((r*max_value/gx_max_color_value) << (bitspercolor*2)) +
((g*max_value/gx_max_color_value) << bitspercolor) +
(b*max_value/gx_max_color_value);
}
static int
gdev_t4693d_map_color_rgb(gx_device *dev, gx_color_index color, ushort prgb[3])
{
ushort bitspercolor = prn_dev->color_info.depth / 3;
ulong max_value = (1 << bitspercolor) - 1;
if (bitspercolor == 5) {
bitspercolor--;
max_value = (1 << bitspercolor) - 1;
}
prgb[0] = (color >> (bitspercolor*2)) * gx_max_color_value / max_value;
prgb[1] = ((color >> bitspercolor) & max_value) * gx_max_color_value / max_value;
prgb[2] = (color & max_value) * gx_max_color_value / max_value;
return(0);
}
static int
t4693d_print_page(gx_device_printer *dev, gp_file *ps_stream)
{
char header[32];
int depth = prn_dev->color_info.depth;
int line_size = gdev_mem_bytes_per_scan_line(prn_dev);
byte *data = (byte *)gs_malloc(dev->memory, line_size, 1, "t4693d_print_page");
char *p;
ushort data_size = line_size/prn_dev->width;
int checksum;
int lnum, code = 0;
int i;
#if !ARCH_IS_BIG_ENDIAN
byte swap;
#endif
if (data == 0) return_error(gs_error_VMerror);
/* build header. */
p = header;
*p++ = (char)0x14; /* Print request */
*p++ = (char)0xc0|20; /* Length of header */
*p++ = (char)0xc0 | ((prn_dev->width >> 6)&0x3f);
*p++ = (char)0x80 | (prn_dev->width&0x3f);
*p++ = (char)0xc0 | ((prn_dev->height >> 6)&0x3f);
*p++ = (char)0x80 | (prn_dev->height&0x3f);
*p++ = (char)0xc1; /* Handshake */
*p++ = (char)0xc0; /* Get number of prints from printer. */
*p++ = (char)0xc0; /* Get pixel shape from printer. */
*p++ = (char)(depth == 8) ? 0xcb : (depth == 16) ? 0xcc : 0xcd;
*p++ = (char)0xc1; /* Pixel-data order 1. */
*p++ = (char)0xc3; /* Interpolate to maximum size. */
*p++ = (char)0xc3; /* Full color range 1. */
*p++ = (char)0xc0; /* Color conversion from printer. */
*p++ = (char)0xc0; /* Color manipulation from printer. */
*p++ = (char)0xc0; /* B/W inversion from printer. */
*p++ = (char)0xc3; /* Portrait mode centered. */
*p++ = (char)0xc9; /* Use printer default for media and printing. */
*p++ = (char)0x95;
*p++ = (char)0x81;
for (checksum = 0, i = 0; &header[i] != p; i++)
checksum += header[i];
*p++ = ((checksum%128)&0x7f) | 0x80;
*p = 0x02; /* end of line. */
/* write header */
if (gp_fwrite(header,1,22,ps_stream) != 22) {
errprintf(dev->memory, "Could not write header (t4693d).\n");
code = gs_note_error(gs_error_ioerror);
goto xit;
}
for (lnum = 0; lnum < prn_dev->height; lnum++) {
code = gdev_prn_copy_scan_lines(prn_dev,lnum,data,line_size);
if (code < 0)
goto xit;
for (i = 0; i < line_size; i += data_size) {
switch (depth) {
case 8:
data[i] &= 0x3f;
break;
case 16:
#if ARCH_IS_BIG_ENDIAN
data[i] &= 0x0f;
#else
swap = data[i];
data[i] = data[i + 1]&0x0f;
data[i + 1] = swap;
#endif
break;
case 24:
break;
default:
errprintf(dev->memory,"Bad depth (%d) t4693d.\n",depth);
code = gs_note_error(gs_error_rangecheck);
goto xit;
}
if (gp_fwrite(&data[i],1,data_size,ps_stream) != data_size) {
errprintf(dev->memory,"Could not write pixel (t4693d).\n");
code = gs_note_error(gs_error_ioerror);
goto xit;
}
}
if (gp_fputc(0x02,ps_stream) != 0x02) {
errprintf(dev->memory,"Could not write EOL (t4693d).\n");
code = gs_note_error(gs_error_ioerror);
goto xit;
}
}
if (gp_fputc(0x01,ps_stream) != 0x01) {
errprintf(dev->memory,"Could not write EOT (t4693d).\n");
code = gs_note_error(gs_error_ioerror);
/* fall through to xit: */
}
xit:
gs_free(dev->memory, data, line_size, 1, "t4693d_print_page");
return(code);
}
|
