2 * Raster file routines for CUPS.
4 * Copyright 2007-2016 by Apple Inc.
5 * Copyright 1997-2006 by Easy Software Products.
7 * This file is part of the CUPS Imaging library.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * which should have been included with this file. If this file is
13 * file is missing or damaged, see the license at "http://www.cups.org/".
15 * This file is subject to the Apple OS-Developed Software exception.
19 * Include necessary headers...
22 #include <cups/raster-private.h>
25 #endif /* HAVE_STDINT_H */
29 * Private structures...
32 struct _cups_raster_s
/**** Raster stream data ****/
34 unsigned sync
; /* Sync word from start of stream */
35 void *ctx
; /* File descriptor */
36 cups_raster_iocb_t iocb
; /* IO callback */
37 cups_mode_t mode
; /* Read/write mode */
38 cups_page_header2_t header
; /* Raster header for current page */
39 unsigned rowheight
, /* Row height in lines */
40 count
, /* Current row run-length count */
41 remaining
, /* Remaining rows in page image */
42 bpp
; /* Bytes per pixel/color */
43 unsigned char *pixels
, /* Pixels for current row */
44 *pend
, /* End of pixel buffer */
45 *pcurrent
; /* Current byte in pixel buffer */
46 int compressed
, /* Non-zero if data is compressed */
47 swapped
; /* Non-zero if data is byte-swapped */
48 unsigned char *buffer
, /* Read/write buffer */
49 *bufptr
, /* Current (read) position in buffer */
50 *bufend
; /* End of current (read) buffer */
51 size_t bufsize
; /* Buffer size */
53 size_t iocount
; /* Number of bytes read/written */
55 unsigned apple_page_count
;/* Apple raster page count */
63 static ssize_t
cups_raster_io(cups_raster_t
*r
, unsigned char *buf
, size_t bytes
);
64 static unsigned cups_raster_read_header(cups_raster_t
*r
);
65 static ssize_t
cups_raster_read(cups_raster_t
*r
, unsigned char *buf
,
67 static int cups_raster_update(cups_raster_t
*r
);
68 static ssize_t
cups_raster_write(cups_raster_t
*r
,
69 const unsigned char *pixels
);
70 static ssize_t
cups_read_fd(void *ctx
, unsigned char *buf
, size_t bytes
);
71 static void cups_swap(unsigned char *buf
, size_t bytes
);
72 static ssize_t
cups_write_fd(void *ctx
, unsigned char *buf
, size_t bytes
);
76 * 'cupsRasterClose()' - Close a raster stream.
78 * The file descriptor associated with the raster stream must be closed
79 * separately as needed.
83 cupsRasterClose(cups_raster_t
*r
) /* I - Stream to close */
99 * 'cupsRasterInitPWGHeader()' - Initialize a page header for PWG Raster output.
101 * The "media" argument specifies the media to use.
103 * The "type" argument specifies a "pwg-raster-document-type-supported" value
104 * that controls the color space and bit depth of the raster data.
106 * The "xres" and "yres" arguments specify the raster resolution in dots per
109 * The "sheet_back" argument specifies a "pwg-raster-document-sheet-back" value
110 * to apply for the back side of a page. Pass @code NULL@ for the front side.
112 * @since CUPS 2.2/macOS 10.12@
115 int /* O - 1 on success, 0 on failure */
116 cupsRasterInitPWGHeader(
117 cups_page_header2_t
*h
, /* I - Page header */
118 pwg_media_t
*media
, /* I - PWG media information */
119 const char *type
, /* I - PWG raster type string */
120 int xdpi
, /* I - Cross-feed direction (horizontal) resolution */
121 int ydpi
, /* I - Feed direction (vertical) resolution */
122 const char *sides
, /* I - IPP "sides" option value */
123 const char *sheet_back
) /* I - Transform for back side or @code NULL@ for none */
125 if (!h
|| !media
|| !type
|| xdpi
<= 0 || ydpi
<= 0)
127 _cupsRasterAddError("%s", strerror(EINVAL
));
132 * Initialize the page header...
135 memset(h
, 0, sizeof(cups_page_header2_t
));
137 strlcpy(h
->cupsPageSizeName
, media
->pwg
, sizeof(h
->cupsPageSizeName
));
139 h
->PageSize
[0] = (unsigned)(72 * media
->width
/ 2540);
140 h
->PageSize
[1] = (unsigned)(72 * media
->length
/ 2540);
142 /* This never gets written but is needed for some applications */
143 h
->cupsPageSize
[0] = 72.0f
* media
->width
/ 2540.0f
;
144 h
->cupsPageSize
[1] = 72.0f
* media
->length
/ 2540.0f
;
146 h
->ImagingBoundingBox
[2] = h
->PageSize
[0];
147 h
->ImagingBoundingBox
[3] = h
->PageSize
[1];
149 h
->HWResolution
[0] = (unsigned)xdpi
;
150 h
->HWResolution
[1] = (unsigned)ydpi
;
152 h
->cupsWidth
= (unsigned)(media
->width
* xdpi
/ 2540);
153 h
->cupsHeight
= (unsigned)(media
->length
* ydpi
/ 2540);
155 if (h
->cupsWidth
> 0x00ffffff || h
->cupsHeight
> 0x00ffffff)
157 _cupsRasterAddError("Raster dimensions too large.");
161 h
->cupsInteger
[CUPS_RASTER_PWG_ImageBoxRight
] = h
->cupsWidth
;
162 h
->cupsInteger
[CUPS_RASTER_PWG_ImageBoxBottom
] = h
->cupsHeight
;
165 * Colorspace and bytes per line...
168 if (!strcmp(type
, "adobe-rgb_8"))
170 h
->cupsBitsPerColor
= 8;
171 h
->cupsBitsPerPixel
= 24;
172 h
->cupsColorSpace
= CUPS_CSPACE_ADOBERGB
;
174 else if (!strcmp(type
, "adobe-rgb_16"))
176 h
->cupsBitsPerColor
= 16;
177 h
->cupsBitsPerPixel
= 48;
178 h
->cupsColorSpace
= CUPS_CSPACE_ADOBERGB
;
180 else if (!strcmp(type
, "black_1"))
182 h
->cupsBitsPerColor
= 1;
183 h
->cupsBitsPerPixel
= 1;
184 h
->cupsColorSpace
= CUPS_CSPACE_K
;
186 else if (!strcmp(type
, "black_8"))
188 h
->cupsBitsPerColor
= 8;
189 h
->cupsBitsPerPixel
= 8;
190 h
->cupsColorSpace
= CUPS_CSPACE_K
;
192 else if (!strcmp(type
, "black_16"))
194 h
->cupsBitsPerColor
= 16;
195 h
->cupsBitsPerPixel
= 16;
196 h
->cupsColorSpace
= CUPS_CSPACE_K
;
198 else if (!strcmp(type
, "cmyk_8"))
200 h
->cupsBitsPerColor
= 8;
201 h
->cupsBitsPerPixel
= 32;
202 h
->cupsColorSpace
= CUPS_CSPACE_CMYK
;
204 else if (!strcmp(type
, "cmyk_16"))
206 h
->cupsBitsPerColor
= 16;
207 h
->cupsBitsPerPixel
= 64;
208 h
->cupsColorSpace
= CUPS_CSPACE_CMYK
;
210 else if (!strncmp(type
, "device", 6) && type
[6] >= '1' && type
[6] <= '9')
212 int ncolors
, bits
; /* Number of colors and bits */
215 if (sscanf(type
, "device%d_%d", &ncolors
, &bits
) != 2 || ncolors
> 15 || (bits
!= 8 && bits
!= 16))
217 _cupsRasterAddError("Unsupported raster type \'%s\'.", type
);
221 h
->cupsBitsPerColor
= (unsigned)bits
;
222 h
->cupsBitsPerPixel
= (unsigned)(ncolors
* bits
);
223 h
->cupsColorSpace
= (cups_cspace_t
)(CUPS_CSPACE_DEVICE1
+ ncolors
- 1);
225 else if (!strcmp(type
, "rgb_8"))
227 h
->cupsBitsPerColor
= 8;
228 h
->cupsBitsPerPixel
= 24;
229 h
->cupsColorSpace
= CUPS_CSPACE_RGB
;
231 else if (!strcmp(type
, "rgb_16"))
233 h
->cupsBitsPerColor
= 16;
234 h
->cupsBitsPerPixel
= 48;
235 h
->cupsColorSpace
= CUPS_CSPACE_RGB
;
237 else if (!strcmp(type
, "sgray_1"))
239 h
->cupsBitsPerColor
= 1;
240 h
->cupsBitsPerPixel
= 1;
241 h
->cupsColorSpace
= CUPS_CSPACE_SW
;
243 else if (!strcmp(type
, "sgray_8"))
245 h
->cupsBitsPerColor
= 8;
246 h
->cupsBitsPerPixel
= 8;
247 h
->cupsColorSpace
= CUPS_CSPACE_SW
;
249 else if (!strcmp(type
, "sgray_16"))
251 h
->cupsBitsPerColor
= 16;
252 h
->cupsBitsPerPixel
= 16;
253 h
->cupsColorSpace
= CUPS_CSPACE_SW
;
255 else if (!strcmp(type
, "srgb_8"))
257 h
->cupsBitsPerColor
= 8;
258 h
->cupsBitsPerPixel
= 24;
259 h
->cupsColorSpace
= CUPS_CSPACE_SRGB
;
261 else if (!strcmp(type
, "srgb_16"))
263 h
->cupsBitsPerColor
= 16;
264 h
->cupsBitsPerPixel
= 48;
265 h
->cupsColorSpace
= CUPS_CSPACE_SRGB
;
269 _cupsRasterAddError("Unsupported raster type \'%s\'.", type
);
273 h
->cupsColorOrder
= CUPS_ORDER_CHUNKED
;
274 h
->cupsNumColors
= h
->cupsBitsPerPixel
/ h
->cupsBitsPerColor
;
275 h
->cupsBytesPerLine
= (h
->cupsWidth
* h
->cupsBitsPerPixel
+ 7) / 8;
281 h
->cupsInteger
[CUPS_RASTER_PWG_CrossFeedTransform
] = 1;
282 h
->cupsInteger
[CUPS_RASTER_PWG_FeedTransform
] = 1;
286 if (!strcmp(sides
, "two-sided-long-edge"))
290 else if (!strcmp(sides
, "two-sided-short-edge"))
295 else if (strcmp(sides
, "one-sided"))
297 _cupsRasterAddError("Unsupported sides value \'%s\'.", sides
);
303 if (!strcmp(sheet_back
, "flipped"))
306 h
->cupsInteger
[CUPS_RASTER_PWG_CrossFeedTransform
] = 0xffffffffU
;
308 h
->cupsInteger
[CUPS_RASTER_PWG_FeedTransform
] = 0xffffffffU
;
310 else if (!strcmp(sheet_back
, "manual-tumble"))
314 h
->cupsInteger
[CUPS_RASTER_PWG_CrossFeedTransform
] = 0xffffffffU
;
315 h
->cupsInteger
[CUPS_RASTER_PWG_FeedTransform
] = 0xffffffffU
;
318 else if (!strcmp(sheet_back
, "rotated"))
322 h
->cupsInteger
[CUPS_RASTER_PWG_CrossFeedTransform
] = 0xffffffffU
;
323 h
->cupsInteger
[CUPS_RASTER_PWG_FeedTransform
] = 0xffffffffU
;
326 else if (strcmp(sheet_back
, "normal"))
328 _cupsRasterAddError("Unsupported sheet_back value \'%s\'.", sheet_back
);
339 * 'cupsRasterOpen()' - Open a raster stream using a file descriptor.
341 * This function associates a raster stream with the given file descriptor.
342 * For most printer driver filters, "fd" will be 0 (stdin). For most raster
343 * image processor (RIP) filters that generate raster data, "fd" will be 1
346 * When writing raster data, the @code CUPS_RASTER_WRITE@,
347 * @code CUPS_RASTER_WRITE_COMPRESS@, or @code CUPS_RASTER_WRITE_PWG@ mode can
348 * be used - compressed and PWG output is generally 25-50% smaller but adds a
349 * 100-300% execution time overhead.
352 cups_raster_t
* /* O - New stream */
353 cupsRasterOpen(int fd
, /* I - File descriptor */
354 cups_mode_t mode
) /* I - Mode - @code CUPS_RASTER_READ@,
355 @code CUPS_RASTER_WRITE@,
356 @code CUPS_RASTER_WRITE_COMPRESSED@,
357 or @code CUPS_RASTER_WRITE_PWG@ */
359 if (mode
== CUPS_RASTER_READ
)
360 return (cupsRasterOpenIO(cups_read_fd
, (void *)((intptr_t)fd
), mode
));
362 return (cupsRasterOpenIO(cups_write_fd
, (void *)((intptr_t)fd
), mode
));
367 * 'cupsRasterOpenIO()' - Open a raster stream using a callback function.
369 * This function associates a raster stream with the given callback function and
372 * When writing raster data, the @code CUPS_RASTER_WRITE@,
373 * @code CUPS_RASTER_WRITE_COMPRESS@, or @code CUPS_RASTER_WRITE_PWG@ mode can
374 * be used - compressed and PWG output is generally 25-50% smaller but adds a
375 * 100-300% execution time overhead.
378 cups_raster_t
* /* O - New stream */
380 cups_raster_iocb_t iocb
, /* I - Read/write callback */
381 void *ctx
, /* I - Context pointer for callback */
382 cups_mode_t mode
) /* I - Mode - @code CUPS_RASTER_READ@,
383 @code CUPS_RASTER_WRITE@,
384 @code CUPS_RASTER_WRITE_COMPRESSED@,
385 or @code CUPS_RASTER_WRITE_PWG@ */
387 cups_raster_t
*r
; /* New stream */
390 _cupsRasterClearError();
392 if ((r
= calloc(sizeof(cups_raster_t
), 1)) == NULL
)
394 _cupsRasterAddError("Unable to allocate memory for raster stream: %s\n",
403 if (mode
== CUPS_RASTER_READ
)
406 * Open for read - get sync word...
409 if (cups_raster_io(r
, (unsigned char *)&(r
->sync
), sizeof(r
->sync
)) !=
412 _cupsRasterAddError("Unable to read header from raster stream: %s\n",
418 if (r
->sync
!= CUPS_RASTER_SYNC
&&
419 r
->sync
!= CUPS_RASTER_REVSYNC
&&
420 r
->sync
!= CUPS_RASTER_SYNCv1
&&
421 r
->sync
!= CUPS_RASTER_REVSYNCv1
&&
422 r
->sync
!= CUPS_RASTER_SYNCv2
&&
423 r
->sync
!= CUPS_RASTER_REVSYNCv2
&&
424 r
->sync
!= CUPS_RASTER_SYNCapple
&&
425 r
->sync
!= CUPS_RASTER_REVSYNCapple
)
427 _cupsRasterAddError("Unknown raster format %08x!\n", r
->sync
);
432 if (r
->sync
== CUPS_RASTER_SYNCv2
||
433 r
->sync
== CUPS_RASTER_REVSYNCv2
||
434 r
->sync
== CUPS_RASTER_SYNCapple
||
435 r
->sync
== CUPS_RASTER_REVSYNCapple
)
438 if (r
->sync
== CUPS_RASTER_REVSYNC
||
439 r
->sync
== CUPS_RASTER_REVSYNCv1
||
440 r
->sync
== CUPS_RASTER_REVSYNCv2
||
441 r
->sync
== CUPS_RASTER_REVSYNCapple
)
444 if (r
->sync
== CUPS_RASTER_SYNCapple
||
445 r
->sync
== CUPS_RASTER_REVSYNCapple
)
447 unsigned char header
[8]; /* File header */
449 if (cups_raster_io(r
, (unsigned char *)header
, sizeof(header
)) !=
452 _cupsRasterAddError("Unable to read header from raster stream: %s\n",
460 DEBUG_printf(("1cupsRasterOpenIO: r->swapped=%d, r->sync=%08x\n", r
->swapped
, r
->sync
));
465 * Open for write - put sync word...
471 case CUPS_RASTER_WRITE
:
472 r
->sync
= CUPS_RASTER_SYNC
;
475 case CUPS_RASTER_WRITE_COMPRESSED
:
477 r
->sync
= CUPS_RASTER_SYNCv2
;
480 case CUPS_RASTER_WRITE_PWG
:
482 r
->sync
= htonl(CUPS_RASTER_SYNC_PWG
);
483 r
->swapped
= r
->sync
!= CUPS_RASTER_SYNC_PWG
;
486 case CUPS_RASTER_WRITE_APPLE
:
488 r
->sync
= htonl(CUPS_RASTER_SYNCapple
);
489 r
->swapped
= r
->sync
!= CUPS_RASTER_SYNCapple
;
490 r
->apple_page_count
= 0xffffffffU
;
494 if (cups_raster_io(r
, (unsigned char *)&(r
->sync
), sizeof(r
->sync
)) < (ssize_t
)sizeof(r
->sync
))
496 _cupsRasterAddError("Unable to write raster stream header: %s\n",
508 * 'cupsRasterReadHeader()' - Read a raster page header and store it in a
509 * version 1 page header structure.
511 * This function is deprecated. Use @link cupsRasterReadHeader2@ instead.
513 * Version 1 page headers were used in CUPS 1.0 and 1.1 and contain a subset
514 * of the version 2 page header data. This function handles reading version 2
515 * page headers and copying only the version 1 data into the provided buffer.
520 unsigned /* O - 1 on success, 0 on failure/end-of-file */
521 cupsRasterReadHeader(
522 cups_raster_t
*r
, /* I - Raster stream */
523 cups_page_header_t
*h
) /* I - Pointer to header data */
526 * Get the raster header...
529 if (!cups_raster_read_header(r
))
531 memset(h
, 0, sizeof(cups_page_header_t
));
536 * Copy the header to the user-supplied buffer...
539 memcpy(h
, &(r
->header
), sizeof(cups_page_header_t
));
546 * 'cupsRasterReadHeader2()' - Read a raster page header and store it in a
547 * version 2 page header structure.
549 * @since CUPS 1.2/macOS 10.5@
552 unsigned /* O - 1 on success, 0 on failure/end-of-file */
553 cupsRasterReadHeader2(
554 cups_raster_t
*r
, /* I - Raster stream */
555 cups_page_header2_t
*h
) /* I - Pointer to header data */
558 * Get the raster header...
561 DEBUG_printf(("cupsRasterReadHeader2(r=%p, h=%p)", (void *)r
, (void *)h
));
563 if (!cups_raster_read_header(r
))
565 memset(h
, 0, sizeof(cups_page_header2_t
));
570 * Copy the header to the user-supplied buffer...
573 memcpy(h
, &(r
->header
), sizeof(cups_page_header2_t
));
580 * 'cupsRasterReadPixels()' - Read raster pixels.
582 * For best performance, filters should read one or more whole lines.
583 * The "cupsBytesPerLine" value from the page header can be used to allocate
584 * the line buffer and as the number of bytes to read.
587 unsigned /* O - Number of bytes read */
588 cupsRasterReadPixels(cups_raster_t
*r
, /* I - Raster stream */
589 unsigned char *p
, /* I - Pointer to pixel buffer */
590 unsigned len
) /* I - Number of bytes to read */
592 ssize_t bytes
; /* Bytes read */
593 unsigned cupsBytesPerLine
; /* cupsBytesPerLine value */
594 unsigned remaining
; /* Bytes remaining */
595 unsigned char *ptr
, /* Pointer to read buffer */
596 byte
, /* Byte from file */
597 *temp
; /* Pointer into buffer */
598 unsigned count
; /* Repetition count */
601 DEBUG_printf(("cupsRasterReadPixels(r=%p, p=%p, len=%u)", (void *)r
, (void *)p
, len
));
603 if (r
== NULL
|| r
->mode
!= CUPS_RASTER_READ
|| r
->remaining
== 0 ||
604 r
->header
.cupsBytesPerLine
== 0)
606 DEBUG_puts("1cupsRasterReadPixels: Returning 0.");
610 DEBUG_printf(("1cupsRasterReadPixels: compressed=%d, remaining=%u", r
->compressed
, r
->remaining
));
615 * Read without compression...
618 r
->remaining
-= len
/ r
->header
.cupsBytesPerLine
;
620 if (cups_raster_io(r
, p
, len
) < (ssize_t
)len
)
622 DEBUG_puts("1cupsRasterReadPixels: Read error, returning 0.");
627 * Swap bytes as needed...
631 (r
->header
.cupsBitsPerColor
== 16 ||
632 r
->header
.cupsBitsPerPixel
== 12 ||
633 r
->header
.cupsBitsPerPixel
== 16))
640 DEBUG_printf(("1cupsRasterReadPixels: Returning %u", len
));
646 * Read compressed data...
650 cupsBytesPerLine
= r
->header
.cupsBytesPerLine
;
652 while (remaining
> 0 && r
->remaining
> 0)
657 * Need to read a new row...
660 if (remaining
== cupsBytesPerLine
)
666 * Read using a modified PackBits compression...
669 if (!cups_raster_read(r
, &byte
, 1))
671 DEBUG_puts("1cupsRasterReadPixels: Read error, returning 0.");
675 r
->count
= (unsigned)byte
+ 1;
681 bytes
= (ssize_t
)cupsBytesPerLine
;
686 * Get a new repeat count...
689 if (!cups_raster_read(r
, &byte
, 1))
691 DEBUG_puts("1cupsRasterReadPixels: Read error, returning 0.");
698 * Clear to end of line...
701 switch (r
->header
.cupsColorSpace
)
704 case CUPS_CSPACE_RGB
:
705 case CUPS_CSPACE_SW
:
706 case CUPS_CSPACE_SRGB
:
707 case CUPS_CSPACE_RGBW
:
708 case CUPS_CSPACE_ADOBERGB
:
709 memset(temp
, 0xff, (size_t)bytes
);
712 memset(temp
, 0x00, (size_t)bytes
);
722 * Copy N literal pixels...
725 count
= (unsigned)(257 - byte
) * r
->bpp
;
727 if (count
> (unsigned)bytes
)
728 count
= (unsigned)bytes
;
730 if (!cups_raster_read(r
, temp
, count
))
732 DEBUG_puts("1cupsRasterReadPixels: Read error, returning 0.");
737 bytes
-= (ssize_t
)count
;
742 * Repeat the next N bytes...
745 count
= ((unsigned)byte
+ 1) * r
->bpp
;
746 if (count
> (unsigned)bytes
)
747 count
= (unsigned)bytes
;
752 bytes
-= (ssize_t
)count
;
754 if (!cups_raster_read(r
, temp
, r
->bpp
))
756 DEBUG_puts("1cupsRasterReadPixels: Read error, returning 0.");
765 memcpy(temp
, temp
- r
->bpp
, r
->bpp
);
773 * Swap bytes as needed...
776 if ((r
->header
.cupsBitsPerColor
== 16 ||
777 r
->header
.cupsBitsPerPixel
== 12 ||
778 r
->header
.cupsBitsPerPixel
== 16) &&
780 cups_swap(ptr
, (size_t)bytes
);
786 if (remaining
>= cupsBytesPerLine
)
788 bytes
= (ssize_t
)cupsBytesPerLine
;
789 r
->pcurrent
= r
->pixels
;
795 bytes
= (ssize_t
)remaining
;
796 r
->pcurrent
= r
->pixels
+ bytes
;
800 * Copy data as needed...
804 memcpy(p
, ptr
, (size_t)bytes
);
809 * Copy fragment from buffer...
812 if ((unsigned)(bytes
= (int)(r
->pend
- r
->pcurrent
)) > remaining
)
813 bytes
= (ssize_t
)remaining
;
815 memcpy(p
, r
->pcurrent
, (size_t)bytes
);
816 r
->pcurrent
+= bytes
;
818 if (r
->pcurrent
>= r
->pend
)
820 r
->pcurrent
= r
->pixels
;
826 remaining
-= (unsigned)bytes
;
830 DEBUG_printf(("1cupsRasterReadPixels: Returning %u", len
));
837 * 'cupsRasterWriteHeader()' - Write a raster page header from a version 1 page
840 * This function is deprecated. Use @link cupsRasterWriteHeader2@ instead.
845 unsigned /* O - 1 on success, 0 on failure */
846 cupsRasterWriteHeader(
847 cups_raster_t
*r
, /* I - Raster stream */
848 cups_page_header_t
*h
) /* I - Raster page header */
850 if (r
== NULL
|| r
->mode
== CUPS_RASTER_READ
)
854 * Make a copy of the header, and compute the number of raster
855 * lines in the page image...
858 memset(&(r
->header
), 0, sizeof(r
->header
));
859 memcpy(&(r
->header
), h
, sizeof(cups_page_header_t
));
861 if (!cups_raster_update(r
))
865 * Write the raster header...
868 if (r
->mode
== CUPS_RASTER_WRITE_PWG
)
871 * PWG raster data is always network byte order with much of the page header
875 cups_page_header2_t fh
; /* File page header */
877 memset(&fh
, 0, sizeof(fh
));
879 strlcpy(fh
.MediaClass
, "PwgRaster", sizeof(fh
.MediaClass
));
881 strlcpy(fh
.MediaColor
, r
->header
.MediaColor
, sizeof(fh
.MediaColor
));
882 strlcpy(fh
.MediaType
, r
->header
.MediaType
, sizeof(fh
.MediaType
));
883 strlcpy(fh
.OutputType
, r
->header
.OutputType
, sizeof(fh
.OutputType
));
884 /* PrintContentType */
886 fh
.CutMedia
= htonl(r
->header
.CutMedia
);
887 fh
.Duplex
= htonl(r
->header
.Duplex
);
888 fh
.HWResolution
[0] = htonl(r
->header
.HWResolution
[0]);
889 fh
.HWResolution
[1] = htonl(r
->header
.HWResolution
[1]);
890 fh
.ImagingBoundingBox
[0] = htonl(r
->header
.ImagingBoundingBox
[0]);
891 fh
.ImagingBoundingBox
[1] = htonl(r
->header
.ImagingBoundingBox
[1]);
892 fh
.ImagingBoundingBox
[2] = htonl(r
->header
.ImagingBoundingBox
[2]);
893 fh
.ImagingBoundingBox
[3] = htonl(r
->header
.ImagingBoundingBox
[3]);
894 fh
.InsertSheet
= htonl(r
->header
.InsertSheet
);
895 fh
.Jog
= htonl(r
->header
.Jog
);
896 fh
.LeadingEdge
= htonl(r
->header
.LeadingEdge
);
897 fh
.ManualFeed
= htonl(r
->header
.ManualFeed
);
898 fh
.MediaPosition
= htonl(r
->header
.MediaPosition
);
899 fh
.MediaWeight
= htonl(r
->header
.MediaWeight
);
900 fh
.NumCopies
= htonl(r
->header
.NumCopies
);
901 fh
.Orientation
= htonl(r
->header
.Orientation
);
902 fh
.PageSize
[0] = htonl(r
->header
.PageSize
[0]);
903 fh
.PageSize
[1] = htonl(r
->header
.PageSize
[1]);
904 fh
.Tumble
= htonl(r
->header
.Tumble
);
905 fh
.cupsWidth
= htonl(r
->header
.cupsWidth
);
906 fh
.cupsHeight
= htonl(r
->header
.cupsHeight
);
907 fh
.cupsBitsPerColor
= htonl(r
->header
.cupsBitsPerColor
);
908 fh
.cupsBitsPerPixel
= htonl(r
->header
.cupsBitsPerPixel
);
909 fh
.cupsBytesPerLine
= htonl(r
->header
.cupsBytesPerLine
);
910 fh
.cupsColorOrder
= htonl(r
->header
.cupsColorOrder
);
911 fh
.cupsColorSpace
= htonl(r
->header
.cupsColorSpace
);
912 fh
.cupsNumColors
= htonl(r
->header
.cupsNumColors
);
913 fh
.cupsInteger
[0] = htonl(r
->header
.cupsInteger
[0]);
915 fh
.cupsInteger
[1] = htonl(r
->header
.cupsInteger
[1]);
916 /* CrossFeedTransform */
917 fh
.cupsInteger
[2] = htonl(r
->header
.cupsInteger
[2]);
919 fh
.cupsInteger
[3] = htonl(r
->header
.cupsInteger
[3]);
921 fh
.cupsInteger
[4] = htonl(r
->header
.cupsInteger
[4]);
923 fh
.cupsInteger
[5] = htonl(r
->header
.cupsInteger
[5]);
925 fh
.cupsInteger
[6] = htonl(r
->header
.cupsInteger
[6]);
927 fh
.cupsInteger
[7] = htonl(r
->header
.cupsInteger
[7]);
929 fh
.cupsInteger
[8] = htonl(r
->header
.cupsInteger
[8]);
931 fh
.cupsInteger
[14] = htonl(r
->header
.cupsInteger
[14]);
932 /* VendorIdentifier */
933 fh
.cupsInteger
[15] = htonl(r
->header
.cupsInteger
[15]);
936 void *dst
= fh
.cupsReal
; /* Bypass bogus compiler warning */
937 void *src
= r
->header
.cupsReal
;
938 memcpy(dst
, src
, sizeof(fh
.cupsReal
) + sizeof(fh
.cupsString
));
941 strlcpy(fh
.cupsRenderingIntent
, r
->header
.cupsRenderingIntent
,
942 sizeof(fh
.cupsRenderingIntent
));
943 strlcpy(fh
.cupsPageSizeName
, r
->header
.cupsPageSizeName
,
944 sizeof(fh
.cupsPageSizeName
));
946 return (cups_raster_io(r
, (unsigned char *)&fh
, sizeof(fh
)) == sizeof(fh
));
948 else if (r
->mode
== CUPS_RASTER_WRITE_APPLE
)
951 * Raw raster data is always network byte order with most of the page header
955 unsigned char appleheader
[32]; /* Raw page header */
957 if (r
->apple_page_count
== 0xffffffffU
)
960 * Write raw page count from raster page header...
963 r
->apple_page_count
= r
->header
.cupsInteger
[0];
965 appleheader
[0] = 'A';
966 appleheader
[1] = 'S';
967 appleheader
[2] = 'T';
969 appleheader
[4] = (unsigned char)(r
->apple_page_count
>> 24);
970 appleheader
[5] = (unsigned char)(r
->apple_page_count
>> 16);
971 appleheader
[6] = (unsigned char)(r
->apple_page_count
>> 8);
972 appleheader
[7] = (unsigned char)(r
->apple_page_count
);
974 if (cups_raster_io(r
, appleheader
, 8) != 8)
978 memset(appleheader
, 0, sizeof(appleheader
));
980 appleheader
[0] = (unsigned char)r
->header
.cupsBitsPerPixel
;
981 appleheader
[1] = r
->header
.cupsColorSpace
== CUPS_CSPACE_SRGB
? 1 :
982 r
->header
.cupsColorSpace
== CUPS_CSPACE_RGBW
? 2 :
983 r
->header
.cupsColorSpace
== CUPS_CSPACE_ADOBERGB
? 3 :
984 r
->header
.cupsColorSpace
== CUPS_CSPACE_W
? 4 :
985 r
->header
.cupsColorSpace
== CUPS_CSPACE_RGB
? 5 :
986 r
->header
.cupsColorSpace
== CUPS_CSPACE_CMYK
? 6 : 0;
987 appleheader
[12] = (unsigned char)(r
->header
.cupsWidth
>> 24);
988 appleheader
[13] = (unsigned char)(r
->header
.cupsWidth
>> 16);
989 appleheader
[14] = (unsigned char)(r
->header
.cupsWidth
>> 8);
990 appleheader
[15] = (unsigned char)(r
->header
.cupsWidth
);
991 appleheader
[16] = (unsigned char)(r
->header
.cupsHeight
>> 24);
992 appleheader
[17] = (unsigned char)(r
->header
.cupsHeight
>> 16);
993 appleheader
[18] = (unsigned char)(r
->header
.cupsHeight
>> 8);
994 appleheader
[19] = (unsigned char)(r
->header
.cupsHeight
);
995 appleheader
[20] = (unsigned char)(r
->header
.HWResolution
[0] >> 24);
996 appleheader
[21] = (unsigned char)(r
->header
.HWResolution
[0] >> 16);
997 appleheader
[22] = (unsigned char)(r
->header
.HWResolution
[0] >> 8);
998 appleheader
[23] = (unsigned char)(r
->header
.HWResolution
[0]);
1000 return (cups_raster_io(r
, appleheader
, sizeof(appleheader
)) == sizeof(appleheader
));
1003 return (cups_raster_io(r
, (unsigned char *)&(r
->header
), sizeof(r
->header
))
1004 == sizeof(r
->header
));
1009 * 'cupsRasterWriteHeader2()' - Write a raster page header from a version 2
1010 * page header structure.
1012 * The page header can be initialized using @link cupsRasterInitPWGHeader@.
1014 * @since CUPS 1.2/macOS 10.5@
1017 unsigned /* O - 1 on success, 0 on failure */
1018 cupsRasterWriteHeader2(
1019 cups_raster_t
*r
, /* I - Raster stream */
1020 cups_page_header2_t
*h
) /* I - Raster page header */
1022 if (r
== NULL
|| r
->mode
== CUPS_RASTER_READ
)
1026 * Make a copy of the header, and compute the number of raster
1027 * lines in the page image...
1030 memcpy(&(r
->header
), h
, sizeof(cups_page_header2_t
));
1032 if (!cups_raster_update(r
))
1035 if (r
->mode
== CUPS_RASTER_WRITE_APPLE
)
1037 r
->rowheight
= h
->HWResolution
[0] / h
->HWResolution
[1];
1039 if (h
->HWResolution
[0] != (r
->rowheight
* h
->HWResolution
[1]))
1046 * Write the raster header...
1049 if (r
->mode
== CUPS_RASTER_WRITE_PWG
)
1052 * PWG raster data is always network byte order with most of the page header
1056 cups_page_header2_t fh
; /* File page header */
1058 memset(&fh
, 0, sizeof(fh
));
1059 strlcpy(fh
.MediaClass
, "PwgRaster", sizeof(fh
.MediaClass
));
1060 strlcpy(fh
.MediaColor
, r
->header
.MediaColor
, sizeof(fh
.MediaColor
));
1061 strlcpy(fh
.MediaType
, r
->header
.MediaType
, sizeof(fh
.MediaType
));
1062 strlcpy(fh
.OutputType
, r
->header
.OutputType
, sizeof(fh
.OutputType
));
1063 strlcpy(fh
.cupsRenderingIntent
, r
->header
.cupsRenderingIntent
,
1064 sizeof(fh
.cupsRenderingIntent
));
1065 strlcpy(fh
.cupsPageSizeName
, r
->header
.cupsPageSizeName
,
1066 sizeof(fh
.cupsPageSizeName
));
1068 fh
.CutMedia
= htonl(r
->header
.CutMedia
);
1069 fh
.Duplex
= htonl(r
->header
.Duplex
);
1070 fh
.HWResolution
[0] = htonl(r
->header
.HWResolution
[0]);
1071 fh
.HWResolution
[1] = htonl(r
->header
.HWResolution
[1]);
1072 fh
.ImagingBoundingBox
[0] = htonl(r
->header
.ImagingBoundingBox
[0]);
1073 fh
.ImagingBoundingBox
[1] = htonl(r
->header
.ImagingBoundingBox
[1]);
1074 fh
.ImagingBoundingBox
[2] = htonl(r
->header
.ImagingBoundingBox
[2]);
1075 fh
.ImagingBoundingBox
[3] = htonl(r
->header
.ImagingBoundingBox
[3]);
1076 fh
.InsertSheet
= htonl(r
->header
.InsertSheet
);
1077 fh
.Jog
= htonl(r
->header
.Jog
);
1078 fh
.LeadingEdge
= htonl(r
->header
.LeadingEdge
);
1079 fh
.ManualFeed
= htonl(r
->header
.ManualFeed
);
1080 fh
.MediaPosition
= htonl(r
->header
.MediaPosition
);
1081 fh
.MediaWeight
= htonl(r
->header
.MediaWeight
);
1082 fh
.NumCopies
= htonl(r
->header
.NumCopies
);
1083 fh
.Orientation
= htonl(r
->header
.Orientation
);
1084 fh
.PageSize
[0] = htonl(r
->header
.PageSize
[0]);
1085 fh
.PageSize
[1] = htonl(r
->header
.PageSize
[1]);
1086 fh
.Tumble
= htonl(r
->header
.Tumble
);
1087 fh
.cupsWidth
= htonl(r
->header
.cupsWidth
);
1088 fh
.cupsHeight
= htonl(r
->header
.cupsHeight
);
1089 fh
.cupsBitsPerColor
= htonl(r
->header
.cupsBitsPerColor
);
1090 fh
.cupsBitsPerPixel
= htonl(r
->header
.cupsBitsPerPixel
);
1091 fh
.cupsBytesPerLine
= htonl(r
->header
.cupsBytesPerLine
);
1092 fh
.cupsColorOrder
= htonl(r
->header
.cupsColorOrder
);
1093 fh
.cupsColorSpace
= htonl(r
->header
.cupsColorSpace
);
1094 fh
.cupsNumColors
= htonl(r
->header
.cupsNumColors
);
1095 fh
.cupsInteger
[0] = htonl(r
->header
.cupsInteger
[0]);
1096 fh
.cupsInteger
[1] = htonl(r
->header
.cupsInteger
[1]);
1097 fh
.cupsInteger
[2] = htonl(r
->header
.cupsInteger
[2]);
1098 fh
.cupsInteger
[3] = htonl((unsigned)(r
->header
.cupsImagingBBox
[0] * r
->header
.HWResolution
[0] / 72.0));
1099 fh
.cupsInteger
[4] = htonl((unsigned)(r
->header
.cupsImagingBBox
[1] * r
->header
.HWResolution
[1] / 72.0));
1100 fh
.cupsInteger
[5] = htonl((unsigned)(r
->header
.cupsImagingBBox
[2] * r
->header
.HWResolution
[0] / 72.0));
1101 fh
.cupsInteger
[6] = htonl((unsigned)(r
->header
.cupsImagingBBox
[3] * r
->header
.HWResolution
[1] / 72.0));
1102 fh
.cupsInteger
[7] = htonl(0xffffff);
1104 return (cups_raster_io(r
, (unsigned char *)&fh
, sizeof(fh
)) == sizeof(fh
));
1106 else if (r
->mode
== CUPS_RASTER_WRITE_APPLE
)
1109 * Raw raster data is always network byte order with most of the page header
1113 unsigned char appleheader
[32]; /* Raw page header */
1114 unsigned height
= r
->header
.cupsHeight
* r
->rowheight
;
1115 /* Computed page height */
1117 if (r
->apple_page_count
== 0xffffffffU
)
1120 * Write raw page count from raster page header...
1123 r
->apple_page_count
= r
->header
.cupsInteger
[0];
1125 appleheader
[0] = 'A';
1126 appleheader
[1] = 'S';
1127 appleheader
[2] = 'T';
1129 appleheader
[4] = (unsigned char)(r
->apple_page_count
>> 24);
1130 appleheader
[5] = (unsigned char)(r
->apple_page_count
>> 16);
1131 appleheader
[6] = (unsigned char)(r
->apple_page_count
>> 8);
1132 appleheader
[7] = (unsigned char)(r
->apple_page_count
);
1134 if (cups_raster_io(r
, appleheader
, 8) != 8)
1138 memset(appleheader
, 0, sizeof(appleheader
));
1140 appleheader
[0] = (unsigned char)r
->header
.cupsBitsPerPixel
;
1141 appleheader
[1] = r
->header
.cupsColorSpace
== CUPS_CSPACE_SRGB
? 1 :
1142 r
->header
.cupsColorSpace
== CUPS_CSPACE_RGBW
? 2 :
1143 r
->header
.cupsColorSpace
== CUPS_CSPACE_ADOBERGB
? 3 :
1144 r
->header
.cupsColorSpace
== CUPS_CSPACE_W
? 4 :
1145 r
->header
.cupsColorSpace
== CUPS_CSPACE_RGB
? 5 :
1146 r
->header
.cupsColorSpace
== CUPS_CSPACE_CMYK
? 6 : 0;
1147 appleheader
[12] = (unsigned char)(r
->header
.cupsWidth
>> 24);
1148 appleheader
[13] = (unsigned char)(r
->header
.cupsWidth
>> 16);
1149 appleheader
[14] = (unsigned char)(r
->header
.cupsWidth
>> 8);
1150 appleheader
[15] = (unsigned char)(r
->header
.cupsWidth
);
1151 appleheader
[16] = (unsigned char)(height
>> 24);
1152 appleheader
[17] = (unsigned char)(height
>> 16);
1153 appleheader
[18] = (unsigned char)(height
>> 8);
1154 appleheader
[19] = (unsigned char)(height
);
1155 appleheader
[20] = (unsigned char)(r
->header
.HWResolution
[0] >> 24);
1156 appleheader
[21] = (unsigned char)(r
->header
.HWResolution
[0] >> 16);
1157 appleheader
[22] = (unsigned char)(r
->header
.HWResolution
[0] >> 8);
1158 appleheader
[23] = (unsigned char)(r
->header
.HWResolution
[0]);
1160 return (cups_raster_io(r
, appleheader
, sizeof(appleheader
)) == sizeof(appleheader
));
1163 return (cups_raster_io(r
, (unsigned char *)&(r
->header
), sizeof(r
->header
))
1164 == sizeof(r
->header
));
1169 * 'cupsRasterWritePixels()' - Write raster pixels.
1171 * For best performance, filters should write one or more whole lines.
1172 * The "cupsBytesPerLine" value from the page header can be used to allocate
1173 * the line buffer and as the number of bytes to write.
1176 unsigned /* O - Number of bytes written */
1177 cupsRasterWritePixels(cups_raster_t
*r
, /* I - Raster stream */
1178 unsigned char *p
, /* I - Bytes to write */
1179 unsigned len
)/* I - Number of bytes to write */
1181 ssize_t bytes
; /* Bytes read */
1182 unsigned remaining
; /* Bytes remaining */
1185 DEBUG_printf(("cupsRasterWritePixels(r=%p, p=%p, len=%u), remaining=%u", (void *)r
, (void *)p
, len
, r
->remaining
));
1187 if (r
== NULL
|| r
->mode
== CUPS_RASTER_READ
|| r
->remaining
== 0)
1193 * Without compression, just write the raster data raw unless the data needs
1197 r
->remaining
-= len
/ r
->header
.cupsBytesPerLine
;
1200 (r
->header
.cupsBitsPerColor
== 16 ||
1201 r
->header
.cupsBitsPerPixel
== 12 ||
1202 r
->header
.cupsBitsPerPixel
== 16))
1204 unsigned char *bufptr
; /* Pointer into write buffer */
1205 unsigned count
; /* Remaining count */
1208 * Allocate a write buffer as needed...
1211 if ((size_t)len
> r
->bufsize
)
1214 bufptr
= realloc(r
->buffer
, len
);
1216 bufptr
= malloc(len
);
1226 * Byte swap the pixels...
1229 for (bufptr
= r
->buffer
, count
= len
; count
> 1; count
-= 2, bufptr
+= 2)
1235 if (count
) /* This should never happen... */
1239 * Write the byte-swapped buffer...
1242 bytes
= cups_raster_io(r
, r
->buffer
, len
);
1245 bytes
= cups_raster_io(r
, p
, len
);
1254 * Otherwise, compress each line...
1257 for (remaining
= len
; remaining
> 0; remaining
-= (unsigned)bytes
, p
+= bytes
)
1260 * Figure out the number of remaining bytes on the current line...
1263 if ((bytes
= (ssize_t
)remaining
) > (ssize_t
)(r
->pend
- r
->pcurrent
))
1264 bytes
= (ssize_t
)(r
->pend
- r
->pcurrent
);
1269 * Check to see if this line is the same as the previous line...
1272 if (memcmp(p
, r
->pcurrent
, (size_t)bytes
))
1274 if (cups_raster_write(r
, r
->pixels
) <= 0)
1282 * Mark more bytes as the same...
1285 r
->pcurrent
+= bytes
;
1287 if (r
->pcurrent
>= r
->pend
)
1290 * Increase the repeat count...
1293 r
->count
+= r
->rowheight
;
1294 r
->pcurrent
= r
->pixels
;
1297 * Flush out this line if it is the last one...
1302 if (r
->remaining
== 0)
1304 if (cups_raster_write(r
, r
->pixels
) <= 0)
1309 else if (r
->count
> (256 - r
->rowheight
))
1311 if (cups_raster_write(r
, r
->pixels
) <= 0)
1325 * Copy the raster data to the buffer...
1328 memcpy(r
->pcurrent
, p
, (size_t)bytes
);
1330 r
->pcurrent
+= bytes
;
1332 if (r
->pcurrent
>= r
->pend
)
1335 * Increase the repeat count...
1338 r
->count
+= r
->rowheight
;
1339 r
->pcurrent
= r
->pixels
;
1342 * Flush out this line if it is the last one...
1347 if (r
->remaining
== 0)
1349 if (cups_raster_write(r
, r
->pixels
) <= 0)
1361 * 'cups_raster_read_header()' - Read a raster page header.
1364 static unsigned /* O - 1 on success, 0 on fail */
1365 cups_raster_read_header(
1366 cups_raster_t
*r
) /* I - Raster stream */
1368 size_t len
; /* Length for read/swap */
1371 DEBUG_printf(("3cups_raster_read_header(r=%p), r->mode=%d", (void *)r
, r
? r
->mode
: 0));
1373 if (r
== NULL
|| r
->mode
!= CUPS_RASTER_READ
)
1376 DEBUG_printf(("4cups_raster_read_header: r->iocount=" CUPS_LLFMT
, CUPS_LLCAST r
->iocount
));
1378 memset(&(r
->header
), 0, sizeof(r
->header
));
1381 * Read the header...
1388 * Get the length of the raster header...
1391 if (r
->sync
== CUPS_RASTER_SYNCv1
|| r
->sync
== CUPS_RASTER_REVSYNCv1
)
1392 len
= sizeof(cups_page_header_t
);
1394 len
= sizeof(cups_page_header2_t
);
1396 DEBUG_printf(("4cups_raster_read_header: len=%d", (int)len
));
1402 if (cups_raster_read(r
, (unsigned char *)&(r
->header
), len
) < (ssize_t
)len
)
1404 DEBUG_printf(("4cups_raster_read_header: EOF, r->iocount=" CUPS_LLFMT
, CUPS_LLCAST r
->iocount
));
1409 * Swap bytes as needed...
1414 unsigned *s
, /* Current word */
1415 temp
; /* Temporary copy */
1418 DEBUG_puts("4cups_raster_read_header: Swapping header bytes.");
1420 for (len
= 81, s
= &(r
->header
.AdvanceDistance
);
1425 *s
= ((temp
& 0xff) << 24) |
1426 ((temp
& 0xff00) << 8) |
1427 ((temp
& 0xff0000) >> 8) |
1428 ((temp
& 0xff000000) >> 24);
1430 DEBUG_printf(("4cups_raster_read_header: %08x => %08x", temp
, *s
));
1435 case CUPS_RASTER_SYNCapple
:
1436 case CUPS_RASTER_REVSYNCapple
:
1438 unsigned char appleheader
[32]; /* Raw header */
1439 static const unsigned rawcspace
[] =
1444 CUPS_CSPACE_ADOBERGB
,
1449 static const unsigned rawnumcolors
[] =
1460 if (cups_raster_read(r
, appleheader
, sizeof(appleheader
)) < (ssize_t
)sizeof(appleheader
))
1462 DEBUG_printf(("4cups_raster_read_header: EOF, r->iocount=" CUPS_LLFMT
, CUPS_LLCAST r
->iocount
));
1466 strlcpy(r
->header
.MediaClass
, "PwgRaster", sizeof(r
->header
.MediaClass
));
1468 r
->header
.cupsBitsPerPixel
= appleheader
[0];
1469 r
->header
.cupsColorSpace
= appleheader
[1] >= (sizeof(rawcspace
) / sizeof(rawcspace
[0])) ? CUPS_CSPACE_DEVICE1
: rawcspace
[appleheader
[1]];
1470 r
->header
.cupsNumColors
= appleheader
[1] >= (sizeof(rawnumcolors
) / sizeof(rawnumcolors
[0])) ? 1 : rawnumcolors
[appleheader
[1]];
1471 r
->header
.cupsBitsPerColor
= r
->header
.cupsBitsPerPixel
/ r
->header
.cupsNumColors
;
1472 r
->header
.cupsWidth
= ((((((unsigned)appleheader
[12] << 8) | (unsigned)appleheader
[13]) << 8) | (unsigned)appleheader
[14]) << 8) | (unsigned)appleheader
[15];
1473 r
->header
.cupsHeight
= ((((((unsigned)appleheader
[16] << 8) | (unsigned)appleheader
[17]) << 8) | (unsigned)appleheader
[18]) << 8) | (unsigned)appleheader
[19];
1474 r
->header
.cupsBytesPerLine
= r
->header
.cupsWidth
* r
->header
.cupsBitsPerPixel
/ 8;
1475 r
->header
.cupsColorOrder
= CUPS_ORDER_CHUNKED
;
1476 r
->header
.HWResolution
[0] = r
->header
.HWResolution
[1] = ((((((unsigned)appleheader
[20] << 8) | (unsigned)appleheader
[21]) << 8) | (unsigned)appleheader
[22]) << 8) | (unsigned)appleheader
[23];
1478 if (r
->header
.HWResolution
[0] > 0)
1480 r
->header
.PageSize
[0] = (unsigned)(r
->header
.cupsWidth
* 72 / r
->header
.HWResolution
[0]);
1481 r
->header
.PageSize
[1] = (unsigned)(r
->header
.cupsHeight
* 72 / r
->header
.HWResolution
[1]);
1482 r
->header
.cupsPageSize
[0] = (float)(r
->header
.cupsWidth
* 72.0 / r
->header
.HWResolution
[0]);
1483 r
->header
.cupsPageSize
[1] = (float)(r
->header
.cupsHeight
* 72.0 / r
->header
.HWResolution
[1]);
1486 r
->header
.cupsInteger
[0] = r
->apple_page_count
;
1487 r
->header
.cupsInteger
[7] = 0xffffff;
1493 * Update the header and row count...
1496 if (!cups_raster_update(r
))
1499 DEBUG_printf(("4cups_raster_read_header: cupsBitsPerPixel=%u, cupsBitsPerColor=%u, cupsBytesPerLine=%u, cupsWidth=%u, cupsHeight=%u, r->bpp=%d", r
->header
.cupsBitsPerPixel
, r
->header
.cupsBitsPerColor
, r
->header
.cupsBytesPerLine
, r
->header
.cupsWidth
, r
->header
.cupsHeight
, r
->bpp
));
1501 return (r
->header
.cupsBitsPerPixel
> 0 && r
->header
.cupsBitsPerPixel
<= 240 && r
->header
.cupsBitsPerColor
> 0 && r
->header
.cupsBitsPerColor
<= 16 && r
->header
.cupsBytesPerLine
> 0 && r
->header
.cupsBytesPerLine
<= 0x7fffffff && r
->header
.cupsHeight
!= 0 && (r
->header
.cupsBytesPerLine
% r
->bpp
) == 0);
1506 * 'cups_raster_io()' - Read/write bytes from a context, handling interruptions.
1509 static ssize_t
/* O - Bytes read/write or -1 */
1510 cups_raster_io(cups_raster_t
*r
, /* I - Raster stream */
1511 unsigned char *buf
, /* I - Buffer for read/write */
1512 size_t bytes
) /* I - Number of bytes to read/write */
1514 ssize_t count
, /* Number of bytes read/written */
1515 total
; /* Total bytes read/written */
1518 DEBUG_printf(("5cups_raster_io(r=%p, buf=%p, bytes=" CUPS_LLFMT
")", (void *)r
, (void *)buf
, CUPS_LLCAST bytes
));
1520 for (total
= 0; total
< (ssize_t
)bytes
; total
+= count
, buf
+= count
)
1522 count
= (*r
->iocb
)(r
->ctx
, buf
, bytes
- (size_t)total
);
1524 DEBUG_printf(("6cups_raster_io: count=%d, total=%d", (int)count
, (int)total
));
1527 DEBUG_puts("6cups_raster_io: Returning 0.");
1532 DEBUG_puts("6cups_raster_io: Returning -1 on error.");
1537 r
->iocount
+= (size_t)count
;
1541 DEBUG_printf(("6cups_raster_io: Returning " CUPS_LLFMT
".", CUPS_LLCAST total
));
1548 * 'cups_raster_read()' - Read through the raster buffer.
1551 static ssize_t
/* O - Number of bytes read */
1552 cups_raster_read(cups_raster_t
*r
, /* I - Raster stream */
1553 unsigned char *buf
, /* I - Buffer */
1554 size_t bytes
) /* I - Number of bytes to read */
1556 ssize_t count
, /* Number of bytes read */
1557 remaining
, /* Remaining bytes in buffer */
1558 total
; /* Total bytes read */
1561 DEBUG_printf(("5cups_raster_read(r=%p, buf=%p, bytes=" CUPS_LLFMT
")", (void *)r
, (void *)buf
, CUPS_LLCAST bytes
));
1564 return (cups_raster_io(r
, buf
, bytes
));
1567 * Allocate a read buffer as needed...
1570 count
= (ssize_t
)(2 * r
->header
.cupsBytesPerLine
);
1574 if ((size_t)count
> r
->bufsize
)
1576 ssize_t offset
= r
->bufptr
- r
->buffer
;
1577 /* Offset to current start of buffer */
1578 ssize_t end
= r
->bufend
- r
->buffer
;/* Offset to current end of buffer */
1579 unsigned char *rptr
; /* Pointer in read buffer */
1582 rptr
= realloc(r
->buffer
, (size_t)count
);
1584 rptr
= malloc((size_t)count
);
1590 r
->bufptr
= rptr
+ offset
;
1591 r
->bufend
= rptr
+ end
;
1592 r
->bufsize
= (size_t)count
;
1596 * Loop until we have read everything...
1599 for (total
= 0, remaining
= (int)(r
->bufend
- r
->bufptr
);
1600 total
< (ssize_t
)bytes
;
1601 total
+= count
, buf
+= count
)
1603 count
= (ssize_t
)bytes
- total
;
1605 DEBUG_printf(("6cups_raster_read: count=" CUPS_LLFMT
", remaining=" CUPS_LLFMT
", buf=%p, bufptr=%p, bufend=%p", CUPS_LLCAST count
, CUPS_LLCAST remaining
, (void *)buf
, (void *)r
->bufptr
, (void *)r
->bufend
));
1612 * Read into the raster buffer and then copy...
1615 remaining
= (*r
->iocb
)(r
->ctx
, r
->buffer
, r
->bufsize
);
1619 r
->bufptr
= r
->buffer
;
1620 r
->bufend
= r
->buffer
+ remaining
;
1623 r
->iocount
+= (size_t)remaining
;
1629 * Read directly into "buf"...
1632 count
= (*r
->iocb
)(r
->ctx
, buf
, (size_t)count
);
1638 r
->iocount
+= (size_t)count
;
1646 * Copy bytes from raster buffer to "buf"...
1649 if (count
> remaining
)
1658 *buf
= *(r
->bufptr
)++;
1661 else if (count
< 128)
1664 * Copy up to 127 bytes without using memcpy(); this is
1665 * faster because it avoids an extra function call and is
1666 * often further optimized by the compiler...
1669 unsigned char *bufptr
; /* Temporary buffer pointer */
1673 for (bufptr
= r
->bufptr
; count
> 0; count
--, total
++)
1681 * Use memcpy() for a large read...
1684 memcpy(buf
, r
->bufptr
, (size_t)count
);
1690 DEBUG_printf(("6cups_raster_read: Returning %ld", (long)total
));
1697 * 'cups_raster_update()' - Update the raster header and row count for the
1701 static int /* O - 1 on success, 0 on failure */
1702 cups_raster_update(cups_raster_t
*r
) /* I - Raster stream */
1704 if (r
->sync
== CUPS_RASTER_SYNCv1
|| r
->sync
== CUPS_RASTER_REVSYNCv1
||
1705 r
->header
.cupsNumColors
== 0)
1708 * Set the "cupsNumColors" field according to the colorspace...
1711 switch (r
->header
.cupsColorSpace
)
1713 case CUPS_CSPACE_W
:
1714 case CUPS_CSPACE_K
:
1715 case CUPS_CSPACE_WHITE
:
1716 case CUPS_CSPACE_GOLD
:
1717 case CUPS_CSPACE_SILVER
:
1718 case CUPS_CSPACE_SW
:
1719 r
->header
.cupsNumColors
= 1;
1722 case CUPS_CSPACE_RGB
:
1723 case CUPS_CSPACE_CMY
:
1724 case CUPS_CSPACE_YMC
:
1725 case CUPS_CSPACE_CIEXYZ
:
1726 case CUPS_CSPACE_CIELab
:
1727 case CUPS_CSPACE_SRGB
:
1728 case CUPS_CSPACE_ADOBERGB
:
1729 case CUPS_CSPACE_ICC1
:
1730 case CUPS_CSPACE_ICC2
:
1731 case CUPS_CSPACE_ICC3
:
1732 case CUPS_CSPACE_ICC4
:
1733 case CUPS_CSPACE_ICC5
:
1734 case CUPS_CSPACE_ICC6
:
1735 case CUPS_CSPACE_ICC7
:
1736 case CUPS_CSPACE_ICC8
:
1737 case CUPS_CSPACE_ICC9
:
1738 case CUPS_CSPACE_ICCA
:
1739 case CUPS_CSPACE_ICCB
:
1740 case CUPS_CSPACE_ICCC
:
1741 case CUPS_CSPACE_ICCD
:
1742 case CUPS_CSPACE_ICCE
:
1743 case CUPS_CSPACE_ICCF
:
1744 r
->header
.cupsNumColors
= 3;
1747 case CUPS_CSPACE_RGBA
:
1748 case CUPS_CSPACE_RGBW
:
1749 case CUPS_CSPACE_CMYK
:
1750 case CUPS_CSPACE_YMCK
:
1751 case CUPS_CSPACE_KCMY
:
1752 case CUPS_CSPACE_GMCK
:
1753 case CUPS_CSPACE_GMCS
:
1754 r
->header
.cupsNumColors
= 4;
1757 case CUPS_CSPACE_KCMYcm
:
1758 if (r
->header
.cupsBitsPerPixel
< 8)
1759 r
->header
.cupsNumColors
= 6;
1761 r
->header
.cupsNumColors
= 4;
1764 case CUPS_CSPACE_DEVICE1
:
1765 case CUPS_CSPACE_DEVICE2
:
1766 case CUPS_CSPACE_DEVICE3
:
1767 case CUPS_CSPACE_DEVICE4
:
1768 case CUPS_CSPACE_DEVICE5
:
1769 case CUPS_CSPACE_DEVICE6
:
1770 case CUPS_CSPACE_DEVICE7
:
1771 case CUPS_CSPACE_DEVICE8
:
1772 case CUPS_CSPACE_DEVICE9
:
1773 case CUPS_CSPACE_DEVICEA
:
1774 case CUPS_CSPACE_DEVICEB
:
1775 case CUPS_CSPACE_DEVICEC
:
1776 case CUPS_CSPACE_DEVICED
:
1777 case CUPS_CSPACE_DEVICEE
:
1778 case CUPS_CSPACE_DEVICEF
:
1779 r
->header
.cupsNumColors
= r
->header
.cupsColorSpace
-
1780 CUPS_CSPACE_DEVICE1
+ 1;
1784 /* Unknown color space */
1790 * Set the number of bytes per pixel/color...
1793 if (r
->header
.cupsColorOrder
== CUPS_ORDER_CHUNKED
)
1794 r
->bpp
= (r
->header
.cupsBitsPerPixel
+ 7) / 8;
1796 r
->bpp
= (r
->header
.cupsBitsPerColor
+ 7) / 8;
1802 * Set the number of remaining rows...
1805 if (r
->header
.cupsColorOrder
== CUPS_ORDER_PLANAR
)
1806 r
->remaining
= r
->header
.cupsHeight
* r
->header
.cupsNumColors
;
1808 r
->remaining
= r
->header
.cupsHeight
;
1811 * Allocate the compression buffer...
1816 if (r
->pixels
!= NULL
)
1819 if ((r
->pixels
= calloc(r
->header
.cupsBytesPerLine
, 1)) == NULL
)
1828 r
->pcurrent
= r
->pixels
;
1829 r
->pend
= r
->pixels
+ r
->header
.cupsBytesPerLine
;
1838 * 'cups_raster_write()' - Write a row of compressed raster data...
1841 static ssize_t
/* O - Number of bytes written */
1843 cups_raster_t
*r
, /* I - Raster stream */
1844 const unsigned char *pixels
) /* I - Pixel data to write */
1846 const unsigned char *start
, /* Start of sequence */
1847 *ptr
, /* Current pointer in sequence */
1848 *pend
, /* End of raster buffer */
1849 *plast
; /* Pointer to last pixel */
1850 unsigned char *wptr
; /* Pointer into write buffer */
1851 unsigned bpp
, /* Bytes per pixel */
1855 DEBUG_printf(("3cups_raster_write(r=%p, pixels=%p)", (void *)r
, (void *)pixels
));
1858 * Allocate a write buffer as needed...
1861 count
= r
->header
.cupsBytesPerLine
* 2;
1865 if ((size_t)count
> r
->bufsize
)
1868 wptr
= realloc(r
->buffer
, count
);
1870 wptr
= malloc(count
);
1874 DEBUG_printf(("4cups_raster_write: Unable to allocate " CUPS_LLFMT
" bytes for raster buffer: %s", CUPS_LLCAST count
, strerror(errno
)));
1883 * Write the row repeat count...
1887 pend
= pixels
+ r
->header
.cupsBytesPerLine
;
1890 *wptr
++ = (unsigned char)(r
->count
- 1);
1893 * Write using a modified PackBits compression...
1896 for (ptr
= pixels
; ptr
< pend
;)
1904 * Encode a single pixel at the end...
1908 for (count
= bpp
; count
> 0; count
--)
1911 else if (!memcmp(start
, ptr
, bpp
))
1914 * Encode a sequence of repeating pixels...
1917 for (count
= 2; count
< 128 && ptr
< plast
; count
++, ptr
+= bpp
)
1918 if (memcmp(ptr
, ptr
+ bpp
, bpp
))
1921 *wptr
++ = (unsigned char)(count
- 1);
1922 for (count
= bpp
; count
> 0; count
--)
1928 * Encode a sequence of non-repeating pixels...
1931 for (count
= 1; count
< 128 && ptr
< plast
; count
++, ptr
+= bpp
)
1932 if (!memcmp(ptr
, ptr
+ bpp
, bpp
))
1935 if (ptr
>= plast
&& count
< 128)
1941 *wptr
++ = (unsigned char)(257 - count
);
1944 memcpy(wptr
, start
, count
);
1949 DEBUG_printf(("4cups_raster_write: Writing " CUPS_LLFMT
" bytes.", CUPS_LLCAST (wptr
- r
->buffer
)));
1951 return (cups_raster_io(r
, r
->buffer
, (size_t)(wptr
- r
->buffer
)));
1956 * 'cups_read_fd()' - Read bytes from a file.
1959 static ssize_t
/* O - Bytes read or -1 */
1960 cups_read_fd(void *ctx
, /* I - File descriptor as pointer */
1961 unsigned char *buf
, /* I - Buffer for read */
1962 size_t bytes
) /* I - Maximum number of bytes to read */
1964 int fd
= (int)((intptr_t)ctx
);
1965 /* File descriptor */
1966 ssize_t count
; /* Number of bytes read */
1969 #ifdef WIN32 /* Sigh */
1970 while ((count
= read(fd
, buf
, (unsigned)bytes
)) < 0)
1972 while ((count
= read(fd
, buf
, bytes
)) < 0)
1974 if (errno
!= EINTR
&& errno
!= EAGAIN
)
1976 DEBUG_printf(("4cups_read_fd: %s", strerror(errno
)));
1980 DEBUG_printf(("4cups_read_fd: Returning %d bytes.", (int)count
));
1987 * 'cups_swap()' - Swap bytes in raster data...
1991 cups_swap(unsigned char *buf
, /* I - Buffer to swap */
1992 size_t bytes
) /* I - Number of bytes to swap */
1994 unsigned char even
, odd
; /* Temporary variables */
2013 * 'cups_write_fd()' - Write bytes to a file.
2016 static ssize_t
/* O - Bytes written or -1 */
2017 cups_write_fd(void *ctx
, /* I - File descriptor pointer */
2018 unsigned char *buf
, /* I - Bytes to write */
2019 size_t bytes
) /* I - Number of bytes to write */
2021 int fd
= (int)((intptr_t)ctx
);
2022 /* File descriptor */
2023 ssize_t count
; /* Number of bytes written */
2026 #ifdef WIN32 /* Sigh */
2027 while ((count
= write(fd
, buf
, (unsigned)bytes
)) < 0)
2029 while ((count
= write(fd
, buf
, bytes
)) < 0)
2031 if (errno
!= EINTR
&& errno
!= EAGAIN
)
2033 DEBUG_printf(("4cups_write_fd: %s", strerror(errno
)));