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rastertolabel.c
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rastertolabel.c
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/*
* Label printer filter for CUPS.
*
* Copyright © 2007-2019 by Apple Inc.
* Copyright © 2001-2007 by Easy Software Products.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more
* information.
*/
/*
* Include necessary headers...
*/
#include <cups/cups.h>
#include <cups/ppd.h>
#include <cups/string-private.h>
#include <cups/language-private.h>
#include <cups/raster.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
/*
* This driver filter currently supports DYMO, Intellitech, and Zebra
* label printers.
*
* The DYMO portion of the driver has been tested with the 300, 330,
* 330 Turbo, and 450 Twin Turbo label printers; it may also work with other
* models. The DYMO printers support printing at 136, 203, and 300 DPI.
*
* The Intellitech portion of the driver has been tested with the
* Intellibar 408, 412, and 808 and supports their PCL variant.
*
* The Zebra portion of the driver has been tested with the LP-2844,
* LP-2844Z, QL-320, and QL-420 label printers; it may also work with
* other models. The driver supports EPL line mode, EPL page mode,
* ZPL, and CPCL as defined in Zebra's online developer documentation.
*/
/*
* Model number constants...
*/
#define DYMO_3x0 0 /* DYMO Labelwriter 300/330/330 Turbo */
#define ZEBRA_EPL_LINE 0x10 /* Zebra EPL line mode printers */
#define ZEBRA_EPL_PAGE 0x11 /* Zebra EPL page mode printers */
#define ZEBRA_ZPL 0x12 /* Zebra ZPL-based printers */
#define ZEBRA_CPCL 0x13 /* Zebra CPCL-based printers */
#define INTELLITECH_PCL 0x20 /* Intellitech PCL-based printers */
/*
* Globals...
*/
unsigned char *Buffer; /* Output buffer */
unsigned char *CompBuffer; /* Compression buffer */
unsigned char *LastBuffer; /* Last buffer */
unsigned Feed; /* Number of lines to skip */
int LastSet; /* Number of repeat characters */
int ModelNumber, /* cupsModelNumber attribute */
Page, /* Current page */
Canceled; /* Non-zero if job is canceled */
/*
* Prototypes...
*/
void Setup(ppd_file_t *ppd);
void StartPage(ppd_file_t *ppd, cups_page_header2_t *header);
void EndPage(ppd_file_t *ppd, cups_page_header2_t *header);
void CancelJob(int sig);
void OutputLine(ppd_file_t *ppd, cups_page_header2_t *header, unsigned y);
void PCLCompress(unsigned char *line, unsigned length);
void ZPLCompress(unsigned char repeat_char, unsigned repeat_count);
/*
* 'Setup()' - Prepare the printer for printing.
*/
void
Setup(ppd_file_t *ppd) /* I - PPD file */
{
int i; /* Looping var */
/*
* Get the model number from the PPD file...
*/
if (ppd)
ModelNumber = ppd->model_number;
/*
* Initialize based on the model number...
*/
switch (ModelNumber)
{
case DYMO_3x0 :
/*
* Clear any remaining data...
*/
for (i = 0; i < 100; i ++)
putchar(0x1b);
/*
* Reset the printer...
*/
fputs("\033@", stdout);
break;
case ZEBRA_EPL_LINE :
break;
case ZEBRA_EPL_PAGE :
break;
case ZEBRA_ZPL :
break;
case ZEBRA_CPCL :
break;
case INTELLITECH_PCL :
/*
* Send a PCL reset sequence.
*/
putchar(0x1b);
putchar('E');
break;
}
}
/*
* 'StartPage()' - Start a page of graphics.
*/
void
StartPage(ppd_file_t *ppd, /* I - PPD file */
cups_page_header2_t *header) /* I - Page header */
{
ppd_choice_t *choice; /* Marked choice */
unsigned length; /* Actual label length */
/*
* Show page device dictionary...
*/
fprintf(stderr, "DEBUG: StartPage...\n");
fprintf(stderr, "DEBUG: Duplex = %d\n", header->Duplex);
fprintf(stderr, "DEBUG: HWResolution = [ %d %d ]\n", header->HWResolution[0], header->HWResolution[1]);
fprintf(stderr, "DEBUG: ImagingBoundingBox = [ %d %d %d %d ]\n", header->ImagingBoundingBox[0], header->ImagingBoundingBox[1], header->ImagingBoundingBox[2], header->ImagingBoundingBox[3]);
fprintf(stderr, "DEBUG: Margins = [ %d %d ]\n", header->Margins[0], header->Margins[1]);
fprintf(stderr, "DEBUG: ManualFeed = %d\n", header->ManualFeed);
fprintf(stderr, "DEBUG: MediaPosition = %d\n", header->MediaPosition);
fprintf(stderr, "DEBUG: NumCopies = %d\n", header->NumCopies);
fprintf(stderr, "DEBUG: Orientation = %d\n", header->Orientation);
fprintf(stderr, "DEBUG: PageSize = [ %d %d ]\n", header->PageSize[0], header->PageSize[1]);
fprintf(stderr, "DEBUG: cupsWidth = %d\n", header->cupsWidth);
fprintf(stderr, "DEBUG: cupsHeight = %d\n", header->cupsHeight);
fprintf(stderr, "DEBUG: cupsMediaType = %d\n", header->cupsMediaType);
fprintf(stderr, "DEBUG: cupsBitsPerColor = %d\n", header->cupsBitsPerColor);
fprintf(stderr, "DEBUG: cupsBitsPerPixel = %d\n", header->cupsBitsPerPixel);
fprintf(stderr, "DEBUG: cupsBytesPerLine = %d\n", header->cupsBytesPerLine);
fprintf(stderr, "DEBUG: cupsColorOrder = %d\n", header->cupsColorOrder);
fprintf(stderr, "DEBUG: cupsColorSpace = %d\n", header->cupsColorSpace);
fprintf(stderr, "DEBUG: cupsCompression = %d\n", header->cupsCompression);
switch (ModelNumber)
{
case DYMO_3x0 :
/*
* Setup printer/job attributes...
*/
length = header->PageSize[1] * header->HWResolution[1] / 72;
printf("\033L%c%c", length >> 8, length);
printf("\033D%c", header->cupsBytesPerLine);
printf("\033%c", header->cupsCompression + 'c'); /* Darkness */
printf("\033q%d", header->MediaPosition + 1); /* Roll Select */
break;
case ZEBRA_EPL_LINE :
/*
* Set print rate...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zePrintRate")) != NULL &&
strcmp(choice->choice, "Default"))
printf("\033S%.0f", atof(choice->choice) * 2.0 - 2.0);
/*
* Set darkness...
*/
if (header->cupsCompression > 0 && header->cupsCompression <= 100)
printf("\033D%d", 7 * header->cupsCompression / 100);
/*
* Set left margin to 0...
*/
fputs("\033M01", stdout);
/*
* Start buffered output...
*/
fputs("\033B", stdout);
break;
case ZEBRA_EPL_PAGE :
/*
* Start a new label...
*/
puts("");
puts("N");
/*
* Set hardware options...
*/
if (!strcmp(header->MediaType, "Direct"))
puts("OD");
/*
* Set print rate...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zePrintRate")) != NULL &&
strcmp(choice->choice, "Default"))
{
double val = atof(choice->choice);
if (val >= 3.0)
printf("S%.0f\n", val);
else
printf("S%.0f\n", val * 2.0 - 2.0);
}
/*
* Set darkness...
*/
if (header->cupsCompression > 0 && header->cupsCompression <= 100)
printf("D%u\n", 15 * header->cupsCompression / 100);
/*
* Set label size...
*/
printf("q%u\n", (header->cupsWidth + 7) & ~7U);
break;
case ZEBRA_ZPL :
/*
* Set darkness...
*/
if (header->cupsCompression > 0 && header->cupsCompression <= 100)
printf("~SD%02u\n", 30 * header->cupsCompression / 100);
/*
* Start bitmap graphics...
*/
printf("~DGR:CUPS.GRF,%u,%u,\n",
header->cupsHeight * header->cupsBytesPerLine,
header->cupsBytesPerLine);
/*
* Allocate compression buffers...
*/
CompBuffer = malloc(2 * header->cupsBytesPerLine + 1);
LastBuffer = malloc(header->cupsBytesPerLine);
LastSet = 0;
break;
case ZEBRA_CPCL :
/*
* Start label...
*/
printf("! 0 %u %u %u %u\r\n", header->HWResolution[0],
header->HWResolution[1], header->cupsHeight,
header->NumCopies);
printf("PAGE-WIDTH %u\r\n", header->cupsWidth);
printf("PAGE-HEIGHT %u\r\n", header->cupsHeight);
break;
case INTELLITECH_PCL :
/*
* Set the media size...
*/
printf("\033&l6D\033&k12H"); /* Set 6 LPI, 10 CPI */
printf("\033&l0O"); /* Set portrait orientation */
switch (header->PageSize[1])
{
case 540 : /* Monarch Envelope */
printf("\033&l80A"); /* Set page size */
break;
case 624 : /* DL Envelope */
printf("\033&l90A"); /* Set page size */
break;
case 649 : /* C5 Envelope */
printf("\033&l91A"); /* Set page size */
break;
case 684 : /* COM-10 Envelope */
printf("\033&l81A"); /* Set page size */
break;
case 756 : /* Executive */
printf("\033&l1A"); /* Set page size */
break;
case 792 : /* Letter */
printf("\033&l2A"); /* Set page size */
break;
case 842 : /* A4 */
printf("\033&l26A"); /* Set page size */
break;
case 1008 : /* Legal */
printf("\033&l3A"); /* Set page size */
break;
default : /* Custom size */
printf("\033!f%uZ", header->PageSize[1] * 300 / 72);
break;
}
printf("\033&l%uP", /* Set page length */
header->PageSize[1] / 12);
printf("\033&l0E"); /* Set top margin to 0 */
if (header->NumCopies)
printf("\033&l%uX", header->NumCopies);
/* Set number copies */
printf("\033&l0L"); /* Turn off perforation skip */
/*
* Print settings...
*/
if (Page == 1)
{
if (header->cupsRowFeed) /* inPrintRate */
printf("\033!p%uS", header->cupsRowFeed);
if (header->cupsCompression != ~0U)
/* inPrintDensity */
printf("\033&d%dA", 30 * header->cupsCompression / 100 - 15);
if ((choice = ppdFindMarkedChoice(ppd, "inPrintMode")) != NULL)
{
if (!strcmp(choice->choice, "Standard"))
fputs("\033!p0M", stdout);
else if (!strcmp(choice->choice, "Tear"))
{
fputs("\033!p1M", stdout);
if (header->cupsRowCount) /* inTearInterval */
printf("\033!n%uT", header->cupsRowCount);
}
else
{
fputs("\033!p2M", stdout);
if (header->cupsRowStep) /* inCutInterval */
printf("\033!n%uC", header->cupsRowStep);
}
}
}
/*
* Setup graphics...
*/
printf("\033*t%uR", header->HWResolution[0]);
/* Set resolution */
printf("\033*r%uS", header->cupsWidth);
/* Set width */
printf("\033*r%uT", header->cupsHeight);
/* Set height */
printf("\033&a0H"); /* Set horizontal position */
printf("\033&a0V"); /* Set vertical position */
printf("\033*r1A"); /* Start graphics */
printf("\033*b3M"); /* Set compression */
/*
* Allocate compression buffers...
*/
CompBuffer = malloc(2 * header->cupsBytesPerLine + 1);
LastBuffer = malloc(header->cupsBytesPerLine);
LastSet = 0;
break;
}
/*
* Allocate memory for a line of graphics...
*/
Buffer = malloc(header->cupsBytesPerLine);
Feed = 0;
}
/*
* 'EndPage()' - Finish a page of graphics.
*/
void
EndPage(ppd_file_t *ppd, /* I - PPD file */
cups_page_header2_t *header) /* I - Page header */
{
int val; /* Option value */
ppd_choice_t *choice; /* Marked choice */
switch (ModelNumber)
{
case DYMO_3x0 :
/*
* Eject the current page...
*/
fputs("\033E", stdout);
break;
case ZEBRA_EPL_LINE :
/*
* End buffered output, eject the label...
*/
fputs("\033E\014", stdout);
break;
case ZEBRA_EPL_PAGE :
/*
* Print the label...
*/
puts("P1");
/*
* Cut the label as needed...
*/
if (header->CutMedia)
puts("C");
break;
case ZEBRA_ZPL :
if (Canceled)
{
/*
* Cancel bitmap download...
*/
puts("~DN");
break;
}
/*
* Start label...
*/
puts("^XA");
/*
* Rotate 180 degrees so that the top of the label/page is at the
* leading edge...
*/
puts("^POI");
/*
* Set print width...
*/
printf("^PW%u\n", header->cupsWidth);
/*
* Set print rate...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zePrintRate")) != NULL &&
strcmp(choice->choice, "Default"))
{
val = atoi(choice->choice);
printf("^PR%d,%d,%d\n", val, val, val);
}
/*
* Put label home in default position (0,0)...
*/
printf("^LH0,0\n");
/*
* Set media tracking...
*/
if (ppdIsMarked(ppd, "zeMediaTracking", "Continuous"))
{
/*
* Add label length command for continuous...
*/
printf("^LL%d\n", header->cupsHeight);
printf("^MNN\n");
}
else if (ppdIsMarked(ppd, "zeMediaTracking", "Web"))
printf("^MNY\n");
else if (ppdIsMarked(ppd, "zeMediaTracking", "Mark"))
printf("^MNM\n");
/*
* Set label top
*/
if (header->cupsRowStep != 200)
printf("^LT%d\n", header->cupsRowStep);
/*
* Set media type...
*/
if (!strcmp(header->MediaType, "Thermal"))
printf("^MTT\n");
else if (!strcmp(header->MediaType, "Direct"))
printf("^MTD\n");
/*
* Set print mode...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zePrintMode")) != NULL &&
strcmp(choice->choice, "Saved"))
{
printf("^MM");
if (!strcmp(choice->choice, "Tear"))
printf("T,Y\n");
else if (!strcmp(choice->choice, "Peel"))
printf("P,Y\n");
else if (!strcmp(choice->choice, "Rewind"))
printf("R,Y\n");
else if (!strcmp(choice->choice, "Applicator"))
printf("A,Y\n");
else
printf("C,Y\n");
}
/*
* Set tear-off adjust position...
*/
if (header->AdvanceDistance != 1000)
{
if ((int)header->AdvanceDistance < 0)
printf("~TA%04d\n", (int)header->AdvanceDistance);
else
printf("~TA%03d\n", (int)header->AdvanceDistance);
}
/*
* Allow for reprinting after an error...
*/
if (ppdIsMarked(ppd, "zeErrorReprint", "Always"))
printf("^JZY\n");
else if (ppdIsMarked(ppd, "zeErrorReprint", "Never"))
printf("^JZN\n");
/*
* Print multiple copies
*/
if (header->NumCopies > 1)
printf("^PQ%d, 0, 0, N\n", header->NumCopies);
/*
* Display the label image...
*/
puts("^FO0,0^XGR:CUPS.GRF,1,1^FS");
/*
* End the label and eject...
*/
puts("^XZ");
/*
* Delete the label image...
*/
puts("^XA");
puts("^IDR:CUPS.GRF^FS");
puts("^XZ");
/*
* Cut the label as needed...
*/
if (header->CutMedia)
puts("^CN1");
break;
case ZEBRA_CPCL :
/*
* Set tear-off adjust position...
*/
if (header->AdvanceDistance != 1000)
printf("PRESENT-AT %d 1\r\n", (int)header->AdvanceDistance);
/*
* Allow for reprinting after an error...
*/
if (ppdIsMarked(ppd, "zeErrorReprint", "Always"))
puts("ON-OUT-OF-PAPER WAIT\r");
else if (ppdIsMarked(ppd, "zeErrorReprint", "Never"))
puts("ON-OUT-OF-PAPER PURGE\r");
/*
* Cut label?
*/
if (header->CutMedia)
puts("CUT\r");
/*
* Set darkness...
*/
if (header->cupsCompression > 0)
printf("TONE %u\r\n", 2 * header->cupsCompression);
/*
* Set print rate...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zePrintRate")) != NULL &&
strcmp(choice->choice, "Default"))
{
val = atoi(choice->choice);
printf("SPEED %d\r\n", val);
}
/*
* Print the label...
*/
if ((choice = ppdFindMarkedChoice(ppd, "zeMediaTracking")) == NULL ||
strcmp(choice->choice, "Continuous"))
puts("FORM\r");
puts("PRINT\r");
break;
case INTELLITECH_PCL :
printf("\033*rB"); /* End GFX */
printf("\014"); /* Eject current page */
break;
}
fflush(stdout);
/*
* Free memory...
*/
free(Buffer);
if (CompBuffer)
{
free(CompBuffer);
CompBuffer = NULL;
}
if (LastBuffer)
{
free(LastBuffer);
LastBuffer = NULL;
}
}
/*
* 'CancelJob()' - Cancel the current job...
*/
void
CancelJob(int sig) /* I - Signal */
{
/*
* Tell the main loop to stop...
*/
(void)sig;
Canceled = 1;
}
/*
* 'OutputLine()' - Output a line of graphics...
*/
void
OutputLine(ppd_file_t *ppd, /* I - PPD file */
cups_page_header2_t *header, /* I - Page header */
unsigned y) /* I - Line number */
{
unsigned i; /* Looping var */
unsigned char *ptr; /* Pointer into buffer */
unsigned char *compptr; /* Pointer into compression buffer */
unsigned char repeat_char; /* Repeated character */
unsigned repeat_count; /* Number of repeated characters */
static const unsigned char *hex = (const unsigned char *)"0123456789ABCDEF";
/* Hex digits */
(void)ppd;
switch (ModelNumber)
{
case DYMO_3x0 :
/*
* See if the line is blank; if not, write it to the printer...
*/
if (Buffer[0] ||
memcmp(Buffer, Buffer + 1, header->cupsBytesPerLine - 1))
{
if (Feed)
{
while (Feed > 255)
{
printf("\033f\001%c", 255);
Feed -= 255;
}
printf("\033f\001%c", Feed);
Feed = 0;
}
putchar(0x16);
fwrite(Buffer, header->cupsBytesPerLine, 1, stdout);
fflush(stdout);
}
else
Feed ++;
break;
case ZEBRA_EPL_LINE :
printf("\033g%03d", header->cupsBytesPerLine);
fwrite(Buffer, 1, header->cupsBytesPerLine, stdout);
fflush(stdout);
break;
case ZEBRA_EPL_PAGE :
if (Buffer[0] || memcmp(Buffer, Buffer + 1, header->cupsBytesPerLine))
{
printf("GW0,%d,%d,1\n", y, header->cupsBytesPerLine);
for (i = header->cupsBytesPerLine, ptr = Buffer; i > 0; i --, ptr ++)
putchar(~*ptr);
putchar('\n');
fflush(stdout);
}
break;
case ZEBRA_ZPL :
/*
* Determine if this row is the same as the previous line.
* If so, output a ':' and return...
*/
if (LastSet)
{
if (!memcmp(Buffer, LastBuffer, header->cupsBytesPerLine))
{
putchar(':');
return;
}
}
/*
* Convert the line to hex digits...
*/
for (ptr = Buffer, compptr = CompBuffer, i = header->cupsBytesPerLine;
i > 0;
i --, ptr ++)
{
*compptr++ = hex[*ptr >> 4];
*compptr++ = hex[*ptr & 15];
}
*compptr = '\0';
/*
* Run-length compress the graphics...
*/
for (compptr = CompBuffer + 1, repeat_char = CompBuffer[0], repeat_count = 1;
*compptr;
compptr ++)
if (*compptr == repeat_char)
repeat_count ++;
else
{
ZPLCompress(repeat_char, repeat_count);
repeat_char = *compptr;
repeat_count = 1;
}
if (repeat_char == '0')
{
/*
* Handle 0's on the end of the line...
*/
if (repeat_count & 1)
{
repeat_count --;
putchar('0');
}
if (repeat_count > 0)
putchar(',');
}
else
ZPLCompress(repeat_char, repeat_count);
fflush(stdout);
/*
* Save this line for the next round...
*/
memcpy(LastBuffer, Buffer, header->cupsBytesPerLine);
LastSet = 1;
break;
case ZEBRA_CPCL :
if (Buffer[0] || memcmp(Buffer, Buffer + 1, header->cupsBytesPerLine))
{
printf("CG %u 1 0 %d ", header->cupsBytesPerLine, y);
fwrite(Buffer, 1, header->cupsBytesPerLine, stdout);
puts("\r");
fflush(stdout);
}
break;
case INTELLITECH_PCL :
if (Buffer[0] ||
memcmp(Buffer, Buffer + 1, header->cupsBytesPerLine - 1))
{
if (Feed)
{
printf("\033*b%dY", Feed);
Feed = 0;
LastSet = 0;
}
PCLCompress(Buffer, header->cupsBytesPerLine);
}
else
Feed ++;
break;
}
}
/*
* 'PCLCompress()' - Output a PCL (mode 3) compressed line.
*/
void
PCLCompress(unsigned char *line, /* I - Line to compress */
unsigned length) /* I - Length of line */
{
unsigned char *line_ptr, /* Current byte pointer */
*line_end, /* End-of-line byte pointer */
*comp_ptr, /* Pointer into compression buffer */
*start, /* Start of compression sequence */
*seed; /* Seed buffer pointer */
unsigned count, /* Count of bytes for output */
offset; /* Offset of bytes for output */
/*
* Do delta-row compression...
*/
line_ptr = line;
line_end = line + length;
comp_ptr = CompBuffer;
seed = LastBuffer;
while (line_ptr < line_end)
{
/*
* Find the next non-matching sequence...
*/
start = line_ptr;
if (!LastSet)
{
/*
* The seed buffer is invalid, so do the next 8 bytes, max...
*/
offset = 0;
if ((count = (unsigned)(line_end - line_ptr)) > 8)
count = 8;
line_ptr += count;
}
else
{
/*
* The seed buffer is valid, so compare against it...
*/
while (*line_ptr == *seed &&
line_ptr < line_end)
{
line_ptr ++;
seed ++;
}
if (line_ptr == line_end)
break;
offset = (unsigned)(line_ptr - start);
/*
* Find up to 8 non-matching bytes...
*/
start = line_ptr;
count = 0;
while (*line_ptr != *seed &&
line_ptr < line_end &&
count < 8)
{
line_ptr ++;
seed ++;
count ++;
}
}
/*
* Place mode 3 compression data in the buffer; see HP manuals
* for details...
*/
if (offset >= 31)
{
/*
* Output multi-byte offset...
*/
*comp_ptr++ = (unsigned char)(((count - 1) << 5) | 31);
offset -= 31;
while (offset >= 255)
{