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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
|
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP CCCC L %
% P P C L %
% PPPP C L %
% P C L %
% P CCCC LLLLL %
% %
% %
% Write HP PCL Printer Format. %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2004 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% http://www.imagemagick.org/www/Copyright.html %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/color.h"
#include "magick/color_private.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/error.h"
#include "magick/geometry.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/static.h"
#include "magick/string_.h"
/*
Forward declarations.
*/
static MagickBooleanType
WritePCLImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s P C L %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsPCL() returns MagickTrue if the image format type, identified by the
% magick string, is PCL.
%
% The format of the IsPCL method is:
%
% MagickBooleanType IsPCL(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static MagickBooleanType IsPCL(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(MagickFalse);
if (memcmp(magick,"\033E\033",3) == 0)
return(MagickTrue);
if (memcmp(magick,"\033E\033&",4) == 0)
return(MagickFalse);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r P C L I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterPCLImage() adds attributes for the PCL image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterPCLImage method is:
%
% RegisterPCLImage(void)
%
*/
ModuleExport void RegisterPCLImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("PCL");
entry->encoder=(EncoderHandler *) WritePCLImage;
entry->magick=(MagickHandler *) IsPCL;
entry->adjoin=MagickFalse;
entry->description=AcquireString("Page Control Language");
entry->module=AcquireString("PCL");
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r P C L I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterPCLImage() removes format registrations made by the
% PCL module from the list of supported formats.
%
% The format of the UnregisterPCLImage method is:
%
% UnregisterPCLImage(void)
%
*/
ModuleExport void UnregisterPCLImage(void)
{
(void) UnregisterMagickInfo("PCL");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e P C L I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WritePCLImage() writes an image in the Page Control Language encoded
% image format.
%
% The format of the WritePCLImage method is:
%
% MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: The image info.
%
% o image: The image.
%
%
%
*/
static MagickBooleanType WritePCLImage(const ImageInfo *image_info,Image *image)
{
char
buffer[MaxTextExtent];
long
y;
MagickBooleanType
status;
register const PixelPacket
*p;
register IndexPacket
*indexes;
register long
x;
register unsigned char
*q;
unsigned long
density;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
(void) SetImageColorspace(image,RGBColorspace);
/*
Initialize the printer.
*/
(void) WriteBlobString(image,"\033E"); /* printer reset */
(void) WriteBlobString(image,"\033&l0E"); /* top margin 0 */
density=75;
if (image_info->density != (char *) NULL)
{
GeometryInfo
geometry;
(void) ParseGeometry(image_info->density,&geometry);
density=(unsigned long) geometry.rho;
}
if (IsMonochromeImage(image,&image->exception))
{
int
polarity;
register unsigned char
bit,
byte;
/*
Write PCL monochrome image.
*/
polarity=PixelIntensityToQuantum(&image->colormap[0]) < (MaxRGB/2);
if (image->colors == 2)
polarity=PixelIntensityToQuantum(&image->colormap[0]) <
PixelIntensityToQuantum(&image->colormap[1]);
(void) FormatMagickString(buffer,MaxTextExtent,"\033*t%ldR",density);
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"\033*r1A"); /* start graphics */
(void) WriteBlobString(image,"\033*b0M"); /* no compression */
for (y=0; y < (long) image->rows; y++)
{
p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
indexes=GetIndexes(image);
bit=0;
byte=0;
(void) FormatMagickString(buffer,MaxTextExtent,"\033*b%luW",
(image->columns+7)/8);
(void) WriteBlobString(image,buffer);
for (x=0; x < (long) image->columns; x++)
{
byte<<=1;
byte|=indexes[x] == polarity ? 0x00 : 0x01;
bit++;
if (bit == 8)
{
(void) WriteBlobByte(image,byte);
bit=0;
byte=0;
}
}
if (bit != 0)
(void) WriteBlobByte(image,byte << (8-bit));
if (QuantumTick(y,image->rows) != MagickFalse)
{
status=MagickMonitor(SaveImageTag,y,image->rows,&image->exception);
if (status == MagickFalse)
break;
}
}
(void) WriteBlobString(image,"\033*rB"); /* end graphics */
}
else
{
static char
color_mode[6] = { 0, 3, 0, 8, 8, 8 };
unsigned char
*pixels;
/*
Allocate pixel buffers.
*/
pixels=(unsigned char *)
AcquireMagickMemory(3*image->columns*sizeof(unsigned char));
if (pixels == (unsigned char *) NULL)
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
/*
Write PCL color image.
*/
(void) WriteBlobString(image,"\033*r3F"); /* set presentation mode */
(void) FormatMagickString(buffer,MaxTextExtent,"\033*t%luR",density); /* set resolution */
(void) WriteBlobString(image,buffer);
(void) FormatMagickString(buffer,MaxTextExtent,"\033*r%luT",image->rows);
(void) WriteBlobString(image,buffer);
(void) FormatMagickString(buffer,MaxTextExtent,"\033*r%luS",
image->columns);
(void) WriteBlobString(image,buffer);
(void) WriteBlobString(image,"\033*v6W"); /* set color mode */
(void) WriteBlob(image,6,(unsigned char *) color_mode);
(void) WriteBlobString(image,"\033*r1A"); /* start raster graphics */
(void) WriteBlobString(image,"\033*b0Y"); /* set y offset */
(void) WriteBlobString(image,"\033*b0M"); /* no compression */
for (y=0; y < (long) image->rows; y++)
{
p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
q=pixels;
for (x=0; x < (long) image->columns; x++)
{
*q++=ScaleQuantumToChar(p->red);
*q++=ScaleQuantumToChar(p->green);
*q++=ScaleQuantumToChar(p->blue);
p++;
}
(void) FormatMagickString(buffer,MaxTextExtent,"\033*b%luW",
3*image->columns); /* send row */
(void) WriteBlobString(image,buffer);
(void) WriteBlob(image,3*image->columns,pixels);
if (QuantumTick(y,image->rows) != MagickFalse)
{
status=MagickMonitor(SaveImageTag,y,image->rows,&image->exception);
if (status == MagickFalse)
break;
}
}
(void) WriteBlobString(image,"\033*r0C"); /* end graphics */
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
}
(void) WriteBlobString(image,"\033E");
CloseBlob(image);
return(MagickTrue);
}
|
