filter/rastertohp.c

   1 /*
   2  * "$Id: rastertohp.c 7834 2008-08-04 21:02:09Z mike $"
   3  *
   4  *   Hewlett-Packard Page Control Language filter for CUPS.
   5  *
   6  *   Copyright 2007-2010 by Apple Inc.
   7  *   Copyright 1993-2007 by Easy Software Products.
   8  *
   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/".
  14  *
  15  *   This file is subject to the Apple OS-Developed Software exception.
  16  *
  17  * Contents:
  18  *
  19  *   Setup()        - Prepare the printer for printing.
  20  *   StartPage()    - Start a page of graphics.
  21  *   EndPage()      - Finish a page of graphics.
  22  *   Shutdown()     - Shutdown the printer.
  23  *   CancelJob()    - Cancel the current job...
  24  *   CompressData() - Compress a line of graphics.
  25  *   OutputLine()   - Output a line of graphics.
  26  *   main()         - Main entry and processing of driver.
  27  */
  28
  29 /*
  30  * Include necessary headers...
  31  */
  32
  33 #include <cups/cups.h>
  34 #include <cups/ppd.h>
  35 #include <cups/string-private.h>
  36 #include <cups/language-private.h>
  37 #include <cups/raster.h>
  38 #include <unistd.h>
  39 #include <fcntl.h>
  40 #include <signal.h>
  41
  42
  43 /*
  44  * Globals...
  45  */
  46
  47 unsigned char   *Planes[4],             /* Output buffers */
  48                 *CompBuffer,            /* Compression buffer */
  49                 *BitBuffer;             /* Buffer for output bits */
  50 int             NumPlanes,              /* Number of color planes */
  51                 ColorBits,              /* Number of bits per color */
  52                 Feed,                   /* Number of lines to skip */
  53                 Duplex,                 /* Current duplex mode */
  54                 Page,                   /* Current page number */
  55                 Canceled;               /* Has the current job been canceled? */
  56
  57
  58 /*
  59  * Prototypes...
  60  */
  61
  62 void    Setup(void);
  63 void    StartPage(ppd_file_t *ppd, cups_page_header2_t *header);
  64 void    EndPage(void);
  65 void    Shutdown(void);
  66
  67 void    CancelJob(int sig);
  68 void    CompressData(unsigned char *line, int length, int plane, int type);
  69 void    OutputLine(cups_page_header2_t *header);
  70
  71
  72 /*
  73  * 'Setup()' - Prepare the printer for printing.
  74  */
  75
  76 void
  77 Setup(void)
  78 {
  79  /*
  80   * Send a PCL reset sequence.
  81   */
  82
  83   putchar(0x1b);
  84   putchar('E');
  85 }
  86
  87
  88 /*
  89  * 'StartPage()' - Start a page of graphics.
  90  */
  91
  92 void
  93 StartPage(ppd_file_t         *ppd,      /* I - PPD file */
  94           cups_page_header2_t *header)  /* I - Page header */
  95 {
  96   int   plane;                          /* Looping var */
  97
  98
  99  /*
 100   * Show page device dictionary...
 101   */
 102
 103   fprintf(stderr, "DEBUG: StartPage...\n");
 104   fprintf(stderr, "DEBUG: MediaClass = \"%s\"\n", header->MediaClass);
 105   fprintf(stderr, "DEBUG: MediaColor = \"%s\"\n", header->MediaColor);
 106   fprintf(stderr, "DEBUG: MediaType = \"%s\"\n", header->MediaType);
 107   fprintf(stderr, "DEBUG: OutputType = \"%s\"\n", header->OutputType);
 108
 109   fprintf(stderr, "DEBUG: AdvanceDistance = %d\n", header->AdvanceDistance);
 110   fprintf(stderr, "DEBUG: AdvanceMedia = %d\n", header->AdvanceMedia);
 111   fprintf(stderr, "DEBUG: Collate = %d\n", header->Collate);
 112   fprintf(stderr, "DEBUG: CutMedia = %d\n", header->CutMedia);
 113   fprintf(stderr, "DEBUG: Duplex = %d\n", header->Duplex);
 114   fprintf(stderr, "DEBUG: HWResolution = [ %d %d ]\n", header->HWResolution[0],
 115           header->HWResolution[1]);
 116   fprintf(stderr, "DEBUG: ImagingBoundingBox = [ %d %d %d %d ]\n",
 117           header->ImagingBoundingBox[0], header->ImagingBoundingBox[1],
 118           header->ImagingBoundingBox[2], header->ImagingBoundingBox[3]);
 119   fprintf(stderr, "DEBUG: InsertSheet = %d\n", header->InsertSheet);
 120   fprintf(stderr, "DEBUG: Jog = %d\n", header->Jog);
 121   fprintf(stderr, "DEBUG: LeadingEdge = %d\n", header->LeadingEdge);
 122   fprintf(stderr, "DEBUG: Margins = [ %d %d ]\n", header->Margins[0],
 123           header->Margins[1]);
 124   fprintf(stderr, "DEBUG: ManualFeed = %d\n", header->ManualFeed);
 125   fprintf(stderr, "DEBUG: MediaPosition = %d\n", header->MediaPosition);
 126   fprintf(stderr, "DEBUG: MediaWeight = %d\n", header->MediaWeight);
 127   fprintf(stderr, "DEBUG: MirrorPrint = %d\n", header->MirrorPrint);
 128   fprintf(stderr, "DEBUG: NegativePrint = %d\n", header->NegativePrint);
 129   fprintf(stderr, "DEBUG: NumCopies = %d\n", header->NumCopies);
 130   fprintf(stderr, "DEBUG: Orientation = %d\n", header->Orientation);
 131   fprintf(stderr, "DEBUG: OutputFaceUp = %d\n", header->OutputFaceUp);
 132   fprintf(stderr, "DEBUG: PageSize = [ %d %d ]\n", header->PageSize[0],
 133           header->PageSize[1]);
 134   fprintf(stderr, "DEBUG: Separations = %d\n", header->Separations);
 135   fprintf(stderr, "DEBUG: TraySwitch = %d\n", header->TraySwitch);
 136   fprintf(stderr, "DEBUG: Tumble = %d\n", header->Tumble);
 137   fprintf(stderr, "DEBUG: cupsWidth = %d\n", header->cupsWidth);
 138   fprintf(stderr, "DEBUG: cupsHeight = %d\n", header->cupsHeight);
 139   fprintf(stderr, "DEBUG: cupsMediaType = %d\n", header->cupsMediaType);
 140   fprintf(stderr, "DEBUG: cupsBitsPerColor = %d\n", header->cupsBitsPerColor);
 141   fprintf(stderr, "DEBUG: cupsBitsPerPixel = %d\n", header->cupsBitsPerPixel);
 142   fprintf(stderr, "DEBUG: cupsBytesPerLine = %d\n", header->cupsBytesPerLine);
 143   fprintf(stderr, "DEBUG: cupsColorOrder = %d\n", header->cupsColorOrder);
 144   fprintf(stderr, "DEBUG: cupsColorSpace = %d\n", header->cupsColorSpace);
 145   fprintf(stderr, "DEBUG: cupsCompression = %d\n", header->cupsCompression);
 146
 147  /*
 148   * Setup printer/job attributes...
 149   */
 150
 151   Duplex    = header->Duplex;
 152   ColorBits = header->cupsBitsPerColor;
 153
 154   if ((!Duplex || (Page & 1)) && header->MediaPosition)
 155     printf("\033&l%dH",                         /* Set media position */
 156            header->MediaPosition);
 157
 158   if (Duplex && ppd && ppd->model_number == 2)
 159   {
 160    /*
 161     * Handle duplexing on new DeskJet printers...
 162     */
 163
 164     printf("\033&l-2H");                        /* Load media */
 165
 166     if (Page & 1)
 167       printf("\033&l2S");                       /* Set duplex mode */
 168   }
 169
 170   if (!Duplex || (Page & 1) || (ppd && ppd->model_number == 2))
 171   {
 172    /*
 173     * Set the media size...
 174     */
 175
 176     printf("\033&l6D\033&k12H");                /* Set 6 LPI, 10 CPI */
 177     printf("\033&l0O");                         /* Set portrait orientation */
 178
 179     switch (header->PageSize[1])
 180     {
 181       case 540 : /* Monarch Envelope */
 182           printf("\033&l80A");                  /* Set page size */
 183           break;
 184
 185       case 595 : /* A5 */
 186           printf("\033&l25A");                  /* Set page size */
 187           break;
 188
 189       case 624 : /* DL Envelope */
 190           printf("\033&l90A");                  /* Set page size */
 191           break;
 192
 193       case 649 : /* C5 Envelope */
 194           printf("\033&l91A");                  /* Set page size */
 195           break;
 196
 197       case 684 : /* COM-10 Envelope */
 198           printf("\033&l81A");                  /* Set page size */
 199           break;
 200
 201       case 709 : /* B5 Envelope */
 202           printf("\033&l100A");                 /* Set page size */
 203           break;
 204
 205       case 756 : /* Executive */
 206           printf("\033&l1A");                   /* Set page size */
 207           break;
 208
 209       case 792 : /* Letter */
 210           printf("\033&l2A");                   /* Set page size */
 211           break;
 212
 213       case 842 : /* A4 */
 214           printf("\033&l26A");                  /* Set page size */
 215           break;
 216
 217       case 1008 : /* Legal */
 218           printf("\033&l3A");                   /* Set page size */
 219           break;
 220
 221       case 1191 : /* A3 */
 222           printf("\033&l27A");                  /* Set page size */
 223           break;
 224
 225       case 1224 : /* Tabloid */
 226           printf("\033&l6A");                   /* Set page size */
 227           break;
 228     }
 229
 230     printf("\033&l%dP",                         /* Set page length */
 231            header->PageSize[1] / 12);
 232     printf("\033&l0E");                         /* Set top margin to 0 */
 233   }
 234
 235   if (!Duplex || (Page & 1))
 236   {
 237    /*
 238     * Set other job options...
 239     */
 240
 241     printf("\033&l%dX", header->NumCopies);     /* Set number copies */
 242
 243     if (header->cupsMediaType &&
 244         (!ppd || ppd->model_number != 2 || header->HWResolution[0] == 600))
 245       printf("\033&l%dM",                       /* Set media type */
 246              header->cupsMediaType);
 247
 248     if (!ppd || ppd->model_number != 2)
 249     {
 250       int mode = Duplex ? 1 + header->Tumble != 0 : 0;
 251
 252       printf("\033&l%dS", mode);                /* Set duplex mode */
 253       printf("\033&l0L");                       /* Turn off perforation skip */
 254     }
 255   }
 256   else if (!ppd || ppd->model_number != 2)
 257     printf("\033&a2G");                         /* Set back side */
 258
 259  /*
 260   * Set graphics mode...
 261   */
 262
 263   if (ppd && ppd->model_number == 2)
 264   {
 265    /*
 266     * Figure out the number of color planes...
 267     */
 268
 269     if (header->cupsColorSpace == CUPS_CSPACE_KCMY)
 270       NumPlanes = 4;
 271     else
 272       NumPlanes = 1;
 273
 274    /*
 275     * Set the resolution and top-of-form...
 276     */
 277
 278     printf("\033&u%dD", header->HWResolution[0]);
 279                                                 /* Resolution */
 280     printf("\033&l0e0L");                       /* Reset top and don't skip */
 281     printf("\033*p0Y\033*p0X");                 /* Set top of form */
 282
 283    /*
 284     * Send 26-byte configure image data command with horizontal and
 285     * vertical resolutions as well as a color count...
 286     */
 287
 288     printf("\033*g26W");
 289     putchar(2);                                 /* Format 2 */
 290     putchar(NumPlanes);                         /* Output planes */
 291
 292     putchar(header->HWResolution[0] >> 8);      /* Black resolution */
 293     putchar(header->HWResolution[0]);
 294     putchar(header->HWResolution[1] >> 8);
 295     putchar(header->HWResolution[1]);
 296     putchar(0);
 297     putchar(1 << ColorBits);                    /* # of black levels */
 298
 299     putchar(header->HWResolution[0] >> 8);      /* Cyan resolution */
 300     putchar(header->HWResolution[0]);
 301     putchar(header->HWResolution[1] >> 8);
 302     putchar(header->HWResolution[1]);
 303     putchar(0);
 304     putchar(1 << ColorBits);                    /* # of cyan levels */
 305
 306     putchar(header->HWResolution[0] >> 8);      /* Magenta resolution */
 307     putchar(header->HWResolution[0]);
 308     putchar(header->HWResolution[1] >> 8);
 309     putchar(header->HWResolution[1]);
 310     putchar(0);
 311     putchar(1 << ColorBits);                    /* # of magenta levels */
 312
 313     putchar(header->HWResolution[0] >> 8);      /* Yellow resolution */
 314     putchar(header->HWResolution[0]);
 315     putchar(header->HWResolution[1] >> 8);
 316     putchar(header->HWResolution[1]);
 317     putchar(0);
 318     putchar(1 << ColorBits);                    /* # of yellow levels */
 319
 320     printf("\033&l0H");                         /* Set media position */
 321   }
 322   else
 323   {
 324     printf("\033*t%dR", header->HWResolution[0]);
 325                                                 /* Set resolution */
 326
 327     if (header->cupsColorSpace == CUPS_CSPACE_KCMY)
 328     {
 329       NumPlanes = 4;
 330       printf("\033*r-4U");                      /* Set KCMY graphics */
 331     }
 332     else if (header->cupsColorSpace == CUPS_CSPACE_CMY)
 333     {
 334       NumPlanes = 3;
 335       printf("\033*r-3U");                      /* Set CMY graphics */
 336     }
 337     else
 338       NumPlanes = 1;                            /* Black&white graphics */
 339
 340    /*
 341     * Set size and position of graphics...
 342     */
 343
 344     printf("\033*r%dS", header->cupsWidth);     /* Set width */
 345     printf("\033*r%dT", header->cupsHeight);    /* Set height */
 346
 347     printf("\033&a0H");                         /* Set horizontal position */
 348
 349     if (ppd)
 350       printf("\033&a%.0fV",                     /* Set vertical position */
 351              10.0 * (ppd->sizes[0].length - ppd->sizes[0].top));
 352     else
 353       printf("\033&a0V");                       /* Set top-of-page */
 354   }
 355
 356   printf("\033*r1A");                           /* Start graphics */
 357
 358   if (header->cupsCompression)
 359     printf("\033*b%dM",                         /* Set compression */
 360            header->cupsCompression);
 361
 362   Feed = 0;                                     /* No blank lines yet */
 363
 364  /*
 365   * Allocate memory for a line of graphics...
 366   */
 367
 368   if ((Planes[0] = malloc(header->cupsBytesPerLine)) == NULL)
 369   {
 370     fputs("ERROR: Unable to allocate memory\n", stderr);
 371     exit(1);
 372   }
 373
 374   for (plane = 1; plane < NumPlanes; plane ++)
 375     Planes[plane] = Planes[0] + plane * header->cupsBytesPerLine / NumPlanes;
 376
 377   if (ColorBits > 1)
 378     BitBuffer = malloc(ColorBits * ((header->cupsWidth + 7) / 8));
 379   else
 380     BitBuffer = NULL;
 381
 382   if (header->cupsCompression)
 383     CompBuffer = malloc(header->cupsBytesPerLine * 2);
 384   else
 385     CompBuffer = NULL;
 386 }
 387
 388
 389 /*
 390  * 'EndPage()' - Finish a page of graphics.
 391  */
 392
 393 void
 394 EndPage(void)
 395 {
 396  /*
 397   * Eject the current page...
 398   */
 399
 400   if (NumPlanes > 1)
 401   {
 402      printf("\033*rC");                 /* End color GFX */
 403
 404      if (!(Duplex && (Page & 1)))
 405        printf("\033&l0H");              /* Eject current page */
 406   }
 407   else
 408   {
 409      printf("\033*r0B");                /* End GFX */
 410
 411      if (!(Duplex && (Page & 1)))
 412        printf("\014");                  /* Eject current page */
 413   }
 414
 415   fflush(stdout);
 416
 417  /*
 418   * Free memory...
 419   */
 420
 421   free(Planes[0]);
 422
 423   if (BitBuffer)
 424     free(BitBuffer);
 425
 426   if (CompBuffer)
 427     free(CompBuffer);
 428 }
 429
 430
 431 /*
 432  * 'Shutdown()' - Shutdown the printer.
 433  */
 434
 435 void
 436 Shutdown(void)
 437 {
 438  /*
 439   * Send a PCL reset sequence.
 440   */
 441
 442   putchar(0x1b);
 443   putchar('E');
 444 }
 445
 446
 447 /*
 448  * 'CancelJob()' - Cancel the current job...
 449  */
 450
 451 void
 452 CancelJob(int sig)                      /* I - Signal */
 453 {
 454   (void)sig;
 455
 456   Canceled = 1;
 457 }
 458
 459
 460 /*
 461  * 'CompressData()' - Compress a line of graphics.
 462  */
 463
 464 void
 465 CompressData(unsigned char *line,       /* I - Data to compress */
 466              int           length,      /* I - Number of bytes */
 467              int           plane,       /* I - Color plane */
 468              int           type)        /* I - Type of compression */
 469 {
 470   unsigned char *line_ptr,              /* Current byte pointer */
 471                 *line_end,              /* End-of-line byte pointer */
 472                 *comp_ptr,              /* Pointer into compression buffer */
 473                 *start;                 /* Start of compression sequence */
 474   int           count;                  /* Count of bytes for output */
 475
 476
 477   switch (type)
 478   {
 479     default :
 480        /*
 481         * Do no compression...
 482         */
 483
 484         line_ptr = line;
 485         line_end = line + length;
 486         break;
 487
 488     case 1 :
 489        /*
 490         * Do run-length encoding...
 491         */
 492
 493         line_end = line + length;
 494         for (line_ptr = line, comp_ptr = CompBuffer;
 495              line_ptr < line_end;
 496              comp_ptr += 2, line_ptr += count)
 497         {
 498           for (count = 1;
 499                (line_ptr + count) < line_end &&
 500                    line_ptr[0] == line_ptr[count] &&
 501                    count < 256;
 502                count ++);
 503
 504           comp_ptr[0] = count - 1;
 505           comp_ptr[1] = line_ptr[0];
 506         }
 507
 508         line_ptr = CompBuffer;
 509         line_end = comp_ptr;
 510         break;
 511
 512     case 2 :
 513        /*
 514         * Do TIFF pack-bits encoding...
 515         */
 516
 517         line_ptr = line;
 518         line_end = line + length;
 519         comp_ptr = CompBuffer;
 520
 521         while (line_ptr < line_end)
 522         {
 523           if ((line_ptr + 1) >= line_end)
 524           {
 525            /*
 526             * Single byte on the end...
 527             */
 528
 529             *comp_ptr++ = 0x00;
 530             *comp_ptr++ = *line_ptr++;
 531           }
 532           else if (line_ptr[0] == line_ptr[1])
 533           {
 534            /*
 535             * Repeated sequence...
 536             */
 537
 538             line_ptr ++;
 539             count = 2;
 540
 541             while (line_ptr < (line_end - 1) &&
 542                    line_ptr[0] == line_ptr[1] &&
 543                    count < 127)
 544             {
 545               line_ptr ++;
 546               count ++;
 547             }
 548
 549             *comp_ptr++ = 257 - count;
 550             *comp_ptr++ = *line_ptr++;
 551           }
 552           else
 553           {
 554            /*
 555             * Non-repeated sequence...
 556             */
 557
 558             start    = line_ptr;
 559             line_ptr ++;
 560             count    = 1;
 561
 562             while (line_ptr < (line_end - 1) &&
 563                    line_ptr[0] != line_ptr[1] &&
 564                    count < 127)
 565             {
 566               line_ptr ++;
 567               count ++;
 568             }
 569
 570             *comp_ptr++ = count - 1;
 571
 572             memcpy(comp_ptr, start, count);
 573             comp_ptr += count;
 574           }
 575         }
 576
 577         line_ptr = CompBuffer;
 578         line_end = comp_ptr;
 579         break;
 580   }
 581
 582  /*
 583   * Set the length of the data and write a raster plane...
 584   */
 585
 586   printf("\033*b%d%c", (int)(line_end - line_ptr), plane);
 587   fwrite(line_ptr, line_end - line_ptr, 1, stdout);
 588 }
 589
 590
 591 /*
 592  * 'OutputLine()' - Output a line of graphics.
 593  */
 594
 595 void
 596 OutputLine(cups_page_header2_t *header) /* I - Page header */
 597 {
 598   int           plane,                  /* Current plane */
 599                 bytes,                  /* Bytes to write */
 600                 count;                  /* Bytes to convert */
 601   unsigned char bit,                    /* Current plane data */
 602                 bit0,                   /* Current low bit data */
 603                 bit1,                   /* Current high bit data */
 604                 *plane_ptr,             /* Pointer into Planes */
 605                 *bit_ptr;               /* Pointer into BitBuffer */
 606
 607
 608  /*
 609   * Output whitespace as needed...
 610   */
 611
 612   if (Feed > 0)
 613   {
 614     printf("\033*b%dY", Feed);
 615     Feed = 0;
 616   }
 617
 618  /*
 619   * Write bitmap data as needed...
 620   */
 621
 622   bytes = (header->cupsWidth + 7) / 8;
 623
 624   for (plane = 0; plane < NumPlanes; plane ++)
 625     if (ColorBits == 1)
 626     {
 627      /*
 628       * Send bits as-is...
 629       */
 630
 631       CompressData(Planes[plane], bytes, plane < (NumPlanes - 1) ? 'V' : 'W',
 632                    header->cupsCompression);
 633     }
 634     else
 635     {
 636      /*
 637       * Separate low and high bit data into separate buffers.
 638       */
 639
 640       for (count = header->cupsBytesPerLine / NumPlanes,
 641                plane_ptr = Planes[plane], bit_ptr = BitBuffer;
 642            count > 0;
 643            count -= 2, plane_ptr += 2, bit_ptr ++)
 644       {
 645         bit = plane_ptr[0];
 646
 647         bit0 = ((bit & 64) << 1) | ((bit & 16) << 2) | ((bit & 4) << 3) | ((bit & 1) << 4);
 648         bit1 = (bit & 128) | ((bit & 32) << 1) | ((bit & 8) << 2) | ((bit & 2) << 3);
 649
 650         if (count > 1)
 651         {
 652           bit = plane_ptr[1];
 653
 654           bit0 |= (bit & 1) | ((bit & 4) >> 1) | ((bit & 16) >> 2) | ((bit & 64) >> 3);
 655           bit1 |= ((bit & 2) >> 1) | ((bit & 8) >> 2) | ((bit & 32) >> 3) | ((bit & 128) >> 4);
 656         }
 657
 658         bit_ptr[0]     = bit0;
 659         bit_ptr[bytes] = bit1;
 660       }
 661
 662      /*
 663       * Send low and high bits...
 664       */
 665
 666       CompressData(BitBuffer, bytes, 'V', header->cupsCompression);
 667       CompressData(BitBuffer + bytes, bytes, plane < (NumPlanes - 1) ? 'V' : 'W',
 668                    header->cupsCompression);
 669     }
 670
 671   fflush(stdout);
 672 }
 673
 674
 675 /*
 676  * 'main()' - Main entry and processing of driver.
 677  */
 678
 679 int                                     /* O - Exit status */
 680 main(int  argc,                         /* I - Number of command-line arguments */
 681      char *argv[])                      /* I - Command-line arguments */
 682 {
 683   int                   fd;             /* File descriptor */
 684   cups_raster_t         *ras;           /* Raster stream for printing */
 685   cups_page_header2_t   header;         /* Page header from file */
 686   int                   y;              /* Current line */
 687   ppd_file_t            *ppd;           /* PPD file */
 688 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
 689   struct sigaction action;              /* Actions for POSIX signals */
 690 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
 691
 692
 693  /*
 694   * Make sure status messages are not buffered...
 695   */
 696
 697   setbuf(stderr, NULL);
 698
 699  /*
 700   * Check command-line...
 701   */
 702
 703   if (argc < 6 || argc > 7)
 704   {
 705    /*
 706     * We don't have the correct number of arguments; write an error message
 707     * and return.
 708     */
 709
 710     _cupsLangPrintf(stderr,
 711                     _("Usage: %s job-id user title copies options [file]\n"),
 712                     "rastertohp");
 713     return (1);
 714   }
 715
 716  /*
 717   * Open the page stream...
 718   */
 719
 720   if (argc == 7)
 721   {
 722     if ((fd = open(argv[6], O_RDONLY)) == -1)
 723     {
 724       _cupsLangPrintf(stderr, _("ERROR: Unable to open raster file - %s\n"),
 725                       strerror(errno));
 726       sleep(1);
 727       return (1);
 728     }
 729   }
 730   else
 731     fd = 0;
 732
 733   ras = cupsRasterOpen(fd, CUPS_RASTER_READ);
 734
 735  /*
 736   * Register a signal handler to eject the current page if the
 737   * job is cancelled.
 738   */
 739
 740   Canceled = 0;
 741
 742 #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
 743   sigset(SIGTERM, CancelJob);
 744 #elif defined(HAVE_SIGACTION)
 745   memset(&action, 0, sizeof(action));
 746
 747   sigemptyset(&action.sa_mask);
 748   action.sa_handler = CancelJob;
 749   sigaction(SIGTERM, &action, NULL);
 750 #else
 751   signal(SIGTERM, CancelJob);
 752 #endif /* HAVE_SIGSET */
 753
 754  /*
 755   * Initialize the print device...
 756   */
 757
 758   ppd = ppdOpenFile(getenv("PPD"));
 759
 760   Setup();
 761
 762  /*
 763   * Process pages as needed...
 764   */
 765
 766   Page = 0;
 767
 768   while (cupsRasterReadHeader2(ras, &header))
 769   {
 770    /*
 771     * Write a status message with the page number and number of copies.
 772     */
 773
 774     if (Canceled)
 775       break;
 776
 777     Page ++;
 778
 779     fprintf(stderr, "PAGE: %d %d\n", Page, header.NumCopies);
 780
 781    /*
 782     * Start the page...
 783     */
 784
 785     StartPage(ppd, &header);
 786
 787    /*
 788     * Loop for each line on the page...
 789     */
 790
 791     for (y = 0; y < header.cupsHeight; y ++)
 792     {
 793      /*
 794       * Let the user know how far we have progressed...
 795       */
 796
 797       if (Canceled)
 798         break;
 799
 800       if ((y & 127) == 0)
 801         _cupsLangPrintf(stderr, _("INFO: Printing page %d, %d%% complete...\n"),
 802                         Page, 100 * y / header.cupsHeight);
 803
 804      /*
 805       * Read a line of graphics...
 806       */
 807
 808       if (cupsRasterReadPixels(ras, Planes[0], header.cupsBytesPerLine) < 1)
 809         break;
 810
 811      /*
 812       * See if the line is blank; if not, write it to the printer...
 813       */
 814
 815       if (Planes[0][0] ||
 816           memcmp(Planes[0], Planes[0] + 1, header.cupsBytesPerLine - 1))
 817         OutputLine(&header);
 818       else
 819         Feed ++;
 820     }
 821
 822    /*
 823     * Eject the page...
 824     */
 825
 826     EndPage();
 827
 828     if (Canceled)
 829       break;
 830   }
 831
 832  /*
 833   * Shutdown the printer...
 834   */
 835
 836   Shutdown();
 837
 838   if (ppd)
 839     ppdClose(ppd);
 840
 841  /*
 842   * Close the raster stream...
 843   */
 844
 845   cupsRasterClose(ras);
 846   if (fd != 0)
 847     close(fd);
 848
 849  /*
 850   * If no pages were printed, send an error message...
 851   */
 852
 853   if (Page == 0)
 854   {
 855     _cupsLangPuts(stderr, _("ERROR: No pages found\n"));
 856     return (1);
 857   }
 858   else
 859   {
 860     _cupsLangPuts(stderr, _("INFO: Ready to print.\n"));
 861     return (0);
 862   }
 863 }
 864
 865
 866 /*
 867  * End of "$Id: rastertohp.c 7834 2008-08-04 21:02:09Z mike $".
 868  */