/*
 * "$Id: rastertoprinter.c,v 1.1.1.4 2004/12/22 23:49:34 jlovell Exp $"
 *
 *   Gimp-Print based raster filter for the Common UNIX Printing System.
 *
 *   Copyright 1993-2003 by Easy Software Products.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License,
 *   version 2, as published by the Free Software Foundation.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, please contact Easy Software
 *   Products at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636-3111 USA
 *
 *       Voice: (301) 373-9603
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 *
 * Contents:
 *
 *   main()                    - Main entry and processing of driver.
 *   cups_writefunc()          - Write data to a file...
 *   cancel_job()              - Cancel the current job...
 *   Image_get_appname()       - Get the application we are running.
 *   Image_get_row()           - Get one row of the image.
 *   Image_height()            - Return the height of an image.
 *   Image_init()              - Initialize an image.
 *   Image_conclude()          - Close the progress display.
 *   Image_width()             - Return the width of an image.
 */

/*
 * Include necessary headers...
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <cups/cups.h>
#include <cups/ppd.h>
#include <cups/raster.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef INCLUDE_GIMP_PRINT_H
#include INCLUDE_GIMP_PRINT_H
#else
#include <gimp-print/gimp-print.h>
#endif

/* Solaris with gcc has problems because gcc's limits.h doesn't #define */
/* this */
#ifndef CHAR_BIT
#define CHAR_BIT 8
#endif

/*
 * Structure for page raster data...
 */

typedef struct
{
  cups_raster_t		*ras;		/* Raster stream to read from */
  int			page;		/* Current page number */
  int			row;		/* Current row number */
  int			left;
  int			right;
  int			bottom;
  int			top;
  int			width;
  int			height;
  int			adjusted_width;
  int			adjusted_height;
  int			last_percent;
  cups_page_header_t	header;		/* Page header from file */
} cups_image_t;

static void	cups_writefunc(void *file, const char *buf, size_t bytes);
static void	cups_errfunc(void *file, const char *buf, size_t bytes);
static void	cancel_job(int sig);
static const char *Image_get_appname(stp_image_t *image);
static stp_image_status_t Image_get_row(stp_image_t *image,
					unsigned char *data,
					size_t byte_limit, int row);
static int	Image_height(stp_image_t *image);
static int	Image_width(stp_image_t *image);
static void	Image_conclude(stp_image_t *image);
static void	Image_init(stp_image_t *image);

static stp_image_t theImage =
{
  Image_init,
  NULL,				/* reset */
  Image_width,
  Image_height,
  Image_get_row,
  Image_get_appname,
  Image_conclude,
  NULL
};

static volatile stp_image_status_t Image_status = STP_IMAGE_STATUS_OK;
static double total_bytes_printed = 0;

static void
set_special_parameter(stp_vars_t *v, const char *name, int choice)
{
  stp_parameter_t desc;
  stp_describe_parameter(v, name, &desc);
  if (desc.p_type == STP_PARAMETER_TYPE_STRING_LIST)
    {
      if (choice >= stp_string_list_count(desc.bounds.str))
	fprintf(stderr, "ERROR: Gimp-Print unable to set %s!\n", name);
      else
	{
	  stp_set_string_parameter
	    (v, name, stp_string_list_param(desc.bounds.str, choice)->name);
	  fprintf(stderr, "DEBUG: Gimp-Print set special parameter %s to choice %d (%s)\n",
		  name, choice,
		  stp_string_list_param(desc.bounds.str, choice)->name);
	}
    }
  else
    fprintf(stderr, "DEBUG: Gimp-Print unable to set special %s: not a string\n",
	    name);
  stp_parameter_description_destroy(&desc);
}

static void
print_debug_block(const stp_vars_t *v, const cups_image_t *cups)
{
  stp_parameter_list_t params;
  int nparams;
  int i;
  fprintf(stderr, "DEBUG: Gimp-Print StartPage...\n");
  fprintf(stderr, "DEBUG: Gimp-Print MediaClass = \"%s\"\n", cups->header.MediaClass);
  fprintf(stderr, "DEBUG: Gimp-Print MediaColor = \"%s\"\n", cups->header.MediaColor);
  fprintf(stderr, "DEBUG: Gimp-Print MediaType = \"%s\"\n", cups->header.MediaType);
  fprintf(stderr, "DEBUG: Gimp-Print OutputType = \"%s\"\n", cups->header.OutputType);

  fprintf(stderr, "DEBUG: Gimp-Print AdvanceDistance = %d\n", cups->header.AdvanceDistance);
  fprintf(stderr, "DEBUG: Gimp-Print AdvanceMedia = %d\n", cups->header.AdvanceMedia);
  fprintf(stderr, "DEBUG: Gimp-Print Collate = %d\n", cups->header.Collate);
  fprintf(stderr, "DEBUG: Gimp-Print CutMedia = %d\n", cups->header.CutMedia);
  fprintf(stderr, "DEBUG: Gimp-Print Duplex = %d\n", cups->header.Duplex);
  fprintf(stderr, "DEBUG: Gimp-Print HWResolution = [ %d %d ]\n", cups->header.HWResolution[0],
	  cups->header.HWResolution[1]);
  fprintf(stderr, "DEBUG: Gimp-Print ImagingBoundingBox = [ %d %d %d %d ]\n",
	  cups->header.ImagingBoundingBox[0], cups->header.ImagingBoundingBox[1],
	  cups->header.ImagingBoundingBox[2], cups->header.ImagingBoundingBox[3]);
  fprintf(stderr, "DEBUG: Gimp-Print InsertSheet = %d\n", cups->header.InsertSheet);
  fprintf(stderr, "DEBUG: Gimp-Print Jog = %d\n", cups->header.Jog);
  fprintf(stderr, "DEBUG: Gimp-Print LeadingEdge = %d\n", cups->header.LeadingEdge);
  fprintf(stderr, "DEBUG: Gimp-Print Margins = [ %d %d ]\n", cups->header.Margins[0],
	  cups->header.Margins[1]);
  fprintf(stderr, "DEBUG: Gimp-Print ManualFeed = %d\n", cups->header.ManualFeed);
  fprintf(stderr, "DEBUG: Gimp-Print MediaPosition = %d\n", cups->header.MediaPosition);
  fprintf(stderr, "DEBUG: Gimp-Print MediaWeight = %d\n", cups->header.MediaWeight);
  fprintf(stderr, "DEBUG: Gimp-Print MirrorPrint = %d\n", cups->header.MirrorPrint);
  fprintf(stderr, "DEBUG: Gimp-Print NegativePrint = %d\n", cups->header.NegativePrint);
  fprintf(stderr, "DEBUG: Gimp-Print NumCopies = %d\n", cups->header.NumCopies);
  fprintf(stderr, "DEBUG: Gimp-Print Orientation = %d\n", cups->header.Orientation);
  fprintf(stderr, "DEBUG: Gimp-Print OutputFaceUp = %d\n", cups->header.OutputFaceUp);
  fprintf(stderr, "DEBUG: Gimp-Print PageSize = [ %d %d ]\n", cups->header.PageSize[0],
	  cups->header.PageSize[1]);
  fprintf(stderr, "DEBUG: Gimp-Print Separations = %d\n", cups->header.Separations);
  fprintf(stderr, "DEBUG: Gimp-Print TraySwitch = %d\n", cups->header.TraySwitch);
  fprintf(stderr, "DEBUG: Gimp-Print Tumble = %d\n", cups->header.Tumble);
  fprintf(stderr, "DEBUG: Gimp-Print cupsWidth = %d\n", cups->header.cupsWidth);
  fprintf(stderr, "DEBUG: Gimp-Print cupsHeight = %d\n", cups->header.cupsHeight);
  fprintf(stderr, "DEBUG: Gimp-Print cups->width = %d\n", cups->width);
  fprintf(stderr, "DEBUG: Gimp-Print cups->height = %d\n", cups->height);
  fprintf(stderr, "DEBUG: Gimp-Print cups->adjusted_width = %d\n", cups->adjusted_width);
  fprintf(stderr, "DEBUG: Gimp-Print cups->adjusted_height = %d\n", cups->adjusted_height);
  fprintf(stderr, "DEBUG: Gimp-Print cupsMediaType = %d\n", cups->header.cupsMediaType);
  fprintf(stderr, "DEBUG: Gimp-Print cupsBitsPerColor = %d\n", cups->header.cupsBitsPerColor);
  fprintf(stderr, "DEBUG: Gimp-Print cupsBitsPerPixel = %d\n", cups->header.cupsBitsPerPixel);
  fprintf(stderr, "DEBUG: Gimp-Print cupsBytesPerLine = %d\n", cups->header.cupsBytesPerLine);
  fprintf(stderr, "DEBUG: Gimp-Print cupsColorOrder = %d\n", cups->header.cupsColorOrder);
  fprintf(stderr, "DEBUG: Gimp-Print cupsColorSpace = %d\n", cups->header.cupsColorSpace);
  fprintf(stderr, "DEBUG: Gimp-Print cupsCompression = %d\n", cups->header.cupsCompression);
  fprintf(stderr, "DEBUG: Gimp-Print cupsRowCount = %d\n", cups->header.cupsRowCount);
  fprintf(stderr, "DEBUG: Gimp-Print cupsRowFeed = %d\n", cups->header.cupsRowFeed);
  fprintf(stderr, "DEBUG: Gimp-Print cupsRowStep = %d\n", cups->header.cupsRowStep);
  fprintf(stderr, "DEBUG: Gimp-Print stp_get_driver(v) |%s|\n", stp_get_driver(v));
  fprintf(stderr, "DEBUG: Gimp-Print stp_get_left(v) |%d|\n", stp_get_left(v));
  fprintf(stderr, "DEBUG: Gimp-Print stp_get_top(v) |%d|\n", stp_get_top(v));
  fprintf(stderr, "DEBUG: Gimp-Print stp_get_page_width(v) |%d|\n", stp_get_page_width(v));
  fprintf(stderr, "DEBUG: Gimp-Print stp_get_page_height(v) |%d|\n", stp_get_page_height(v));
  params = stp_get_parameter_list(v);
  nparams = stp_parameter_list_count(params);
  for (i = 0; i < nparams; i++)
    {
      const stp_parameter_t *p = stp_parameter_list_param(params, i);
      switch (p->p_type)
	{
	case STP_PARAMETER_TYPE_STRING_LIST:
	  fprintf(stderr, "DEBUG: Gimp-Print stp_get_string %s(v) |%s| %d\n",
		  p->name, stp_get_string_parameter(v, p->name) ?
		  stp_get_string_parameter(v, p->name) : "NULL",
		  stp_get_string_parameter_active(v, p->name));
	  break;
	case STP_PARAMETER_TYPE_DOUBLE:
	  fprintf(stderr, "DEBUG: Gimp-Print stp_get_float %s(v) |%.3f| %d\n",
		  p->name, stp_get_float_parameter(v, p->name),
		  stp_get_float_parameter_active(v, p->name));
	  break;
	case STP_PARAMETER_TYPE_DIMENSION:
	  fprintf(stderr, "DEBUG: Gimp-Print stp_get_dimension %s(v) |%d| %d\n",
		  p->name, stp_get_dimension_parameter(v, p->name),
		  stp_get_dimension_parameter_active(v, p->name));
	  break;
	case STP_PARAMETER_TYPE_INT:
	  fprintf(stderr, "DEBUG: Gimp-Print stp_get_int %s(v) |%d| %d\n",
		  p->name, stp_get_int_parameter(v, p->name),
		  stp_get_int_parameter_active(v, p->name));
	  break;
	case STP_PARAMETER_TYPE_BOOLEAN:
	  fprintf(stderr, "DEBUG: Gimp-Print stp_get_boolean %s(v) |%d| %d\n",
		  p->name, stp_get_boolean_parameter(v, p->name),
		  stp_get_boolean_parameter_active(v, p->name));
	  break;
	  /*
	   * We don't handle raw, curve, or filename arguments.
	   */
	default:
	  break;
	}
    }
  stp_parameter_list_destroy(params);
}

static int
printer_supports_bw(const stp_vars_t *v)
{
  stp_parameter_t desc;
  int status = 0;
  stp_describe_parameter(v, "PrintingMode", &desc);
  if (stp_string_list_is_present(desc.bounds.str, "BW"))
    status = 1;
  stp_parameter_description_destroy(&desc);
  return status;
}

static stp_vars_t *
initialize_page(cups_image_t *cups, const stp_vars_t *default_settings)
{
  const stp_papersize_t	*size;		/* Paper size */
  stp_vars_t *v = stp_vars_create_copy(default_settings);

  stp_set_page_width(v, cups->header.PageSize[0]);
  stp_set_page_height(v, cups->header.PageSize[1]);
  stp_set_outfunc(v, cups_writefunc);
  stp_set_errfunc(v, cups_errfunc);
  stp_set_outdata(v, stdout);
  stp_set_errdata(v, stderr);

  stp_set_string_parameter(v, "ChannelBitDepth", "8");
  switch (cups->header.cupsColorSpace)
    {
    case CUPS_CSPACE_W :
      /* Olympus photo printers don't support black & white ink! */
      if (printer_supports_bw(v))
	stp_set_string_parameter(v, "PrintingMode", "BW");
      stp_set_string_parameter(v, "InputImageType", "Whitescale");
      break;
    case CUPS_CSPACE_K :
      /* Olympus photo printers don't support black & white ink! */
      if (printer_supports_bw(v))
	stp_set_string_parameter(v, "PrintingMode", "BW");
      stp_set_string_parameter(v, "InputImageType", "Grayscale");
      break;
    case CUPS_CSPACE_RGB :
      stp_set_string_parameter(v, "PrintingMode", "Color");
      stp_set_string_parameter(v, "InputImageType", "RGB");
      break;
    case CUPS_CSPACE_CMY :
      stp_set_string_parameter(v, "PrintingMode", "Color");
      stp_set_string_parameter(v, "InputImageType", "CMY");
      break;
    case CUPS_CSPACE_CMYK :
      stp_set_string_parameter(v, "PrintingMode", "Color");
      stp_set_string_parameter(v, "InputImageType", "CMYK");
      break;
    case CUPS_CSPACE_KCMY :
      stp_set_string_parameter(v, "PrintingMode", "Color");
      stp_set_string_parameter(v, "InputImageType", "KCMY");
      break;
    default :
      fprintf(stderr, "ERROR: Gimp-Print Bad colorspace %d!\n",
	      cups->header.cupsColorSpace);
      break;
    }

  if (cups->header.cupsCompression >= 0)
    set_special_parameter(v, "Resolution", cups->header.cupsCompression);

  if (cups->header.MediaClass && strlen(cups->header.MediaClass) > 0)
    stp_set_string_parameter(v, "InputSlot", cups->header.MediaClass);

  if (cups->header.MediaType && strlen(cups->header.MediaType) > 0)
    stp_set_string_parameter(v, "MediaType", cups->header.MediaType);

  fprintf(stderr, "DEBUG: Gimp-Print PageSize = %dx%d\n", cups->header.PageSize[0],
	  cups->header.PageSize[1]);

  if ((size = stp_get_papersize_by_size(cups->header.PageSize[1],
					cups->header.PageSize[0])) != NULL)
    stp_set_string_parameter(v, "PageSize", size->name);
  else
    fprintf(stderr, "ERROR: Gimp-Print Unable to get media size!\n");

 /* 
  * Duplex
  * Note that the names MUST match those in the printer driver(s)
  */

  if (cups->header.Duplex != 0)
    {
      if (cups->header.Tumble != 0)
        stp_set_string_parameter(v, "Duplex", "DuplexTumble");
      else
        stp_set_string_parameter(v, "Duplex", "DuplexNoTumble");
    }

  stp_set_string_parameter(v, "JobMode", "Job");
  stp_get_media_size(v, &(cups->width), &(cups->height));
  stp_get_imageable_area(v, &(cups->left), &(cups->right),
			 &(cups->bottom), &(cups->top));
  fprintf(stderr, "DEBUG: Gimp-Print limits w %d l %d r %d  h %d t %d b %d\n",
	  cups->width, cups->left, cups->right, cups->height, cups->top, cups->bottom);
  stp_set_width(v, cups->right - cups->left);
  stp_set_height(v, cups->bottom - cups->top);
  stp_set_left(v, cups->left);
  stp_set_top(v, cups->top);
  cups->right = cups->width - cups->right;
  cups->width = cups->width - cups->left - cups->right;
  cups->width = cups->header.HWResolution[0] * cups->width / 72;
  cups->left = cups->header.HWResolution[0] * cups->left / 72;
  cups->right = cups->header.HWResolution[0] * cups->right / 72;
  cups->adjusted_width = cups->width;
  if (cups->adjusted_width > cups->header.cupsWidth)
    cups->adjusted_width = cups->header.cupsWidth;

  cups->bottom = cups->height - cups->bottom;
  cups->height = cups->height - cups->top - cups->bottom;
  cups->height = cups->header.HWResolution[1] * cups->height / 72;
  cups->top = cups->header.HWResolution[1] * cups->top / 72;
  cups->bottom = cups->header.HWResolution[1] * cups->bottom / 72;
  cups->adjusted_height = cups->height;
  if (cups->adjusted_height > cups->header.cupsHeight)
    cups->adjusted_height = cups->header.cupsHeight;
  fprintf(stderr, "DEBUG: Gimp-Print CUPS settings w %d %d l %d r %d  h %d %d t %d b %d\n",
	  cups->width, cups->adjusted_width, cups->left, cups->right,
	  cups->height, cups->adjusted_height, cups->top, cups->bottom);

  return v;
}

static void
purge_excess_data(cups_image_t *cups)
{
  char *buffer = stp_malloc(cups->header.cupsBytesPerLine);
  if (buffer)
    {
      fprintf(stderr, "DEBUG: Gimp-Print purging %d rows\n",
	      cups->header.cupsHeight - cups->row);
      while (cups->row < cups->header.cupsHeight)
	{
	  cupsRasterReadPixels(cups->ras, (unsigned char *)buffer,
			       cups->header.cupsBytesPerLine);
	  cups->row ++;
	}
    }
  stp_free(buffer);
}

static void
set_all_options(stp_vars_t *v, cups_option_t *options, int num_options,
		ppd_file_t *ppd)
{
  stp_parameter_list_t params = stp_get_parameter_list(v);
  int nparams = stp_parameter_list_count(params);
  int i;
  for (i = 0; i < nparams; i++)
    {
      const stp_parameter_t *param = stp_parameter_list_param(params, i);
      stp_parameter_t desc;
      char *ppd_option_name = stp_malloc(strlen(param->name) + 8);	/* StpFineFOO\0 */

      const char *val;		/* CUPS option value */
      ppd_option_t *ppd_option;
      stp_describe_parameter(v, param->name, &desc);
      if (desc.p_type == STP_PARAMETER_TYPE_DOUBLE)
	{
	  sprintf(ppd_option_name, "Stp%s", desc.name);
	  val = cupsGetOption(ppd_option_name, num_options, options);
	  if (!val)
	    {
	      ppd_option = ppdFindOption(ppd, ppd_option_name);
	      if (ppd_option)
		val = ppd_option->defchoice;
	    }
	  if (val && strlen(val) > 0 && strcmp(val, "None") != 0)
	    {
	      double coarse_val = atof(val) * 0.001;
	      double fine_val = 0;
	      sprintf(ppd_option_name, "StpFine%s", desc.name);
	      val = cupsGetOption(ppd_option_name, num_options, options);
	      if (!val)
		{
		  ppd_option = ppdFindOption(ppd, ppd_option_name);
		  if (ppd_option)
		    val = ppd_option->defchoice;
		}
	      if (val && strlen(val) > 0 && strcmp(val, "None") != 0)
		fine_val = atof(val) * 0.001;
	      fprintf(stderr, "DEBUG: Gimp-Print set float %s to %f + %f\n",
		      desc.name, coarse_val, fine_val);
	      fine_val += coarse_val;
	      if (fine_val > desc.bounds.dbl.upper)
		fine_val = desc.bounds.dbl.upper;
	      stp_set_float_parameter(v, desc.name, fine_val);
	    }
	}
      else
	{
	  sprintf(ppd_option_name, "Stp%s", desc.name);
	  val = cupsGetOption(ppd_option_name, num_options, options);
	  if (!val)
	    {
	      ppd_option = ppdFindOption(ppd, ppd_option_name);
	      if (ppd_option)
		val = ppd_option->defchoice;
	    }
	  if (val && ((strlen(val) > 0 && strcmp(val, "None") != 0) ||
		      (desc.p_type == STP_PARAMETER_TYPE_STRING_LIST &&
		       stp_string_list_is_present(desc.bounds.str, val))))
	    {
	      switch (desc.p_type)
		{
		case STP_PARAMETER_TYPE_STRING_LIST:
		  fprintf(stderr, "DEBUG: Gimp-Print set string %s to %s\n",
			  desc.name, val);
		  stp_set_string_parameter(v, desc.name, val);
		  break;
		case STP_PARAMETER_TYPE_INT:
		  fprintf(stderr, "DEBUG: Gimp-Print set int %s to %s\n",
			  desc.name, val);
		  stp_set_int_parameter(v, desc.name, atoi(val));
		  break;
		case STP_PARAMETER_TYPE_DIMENSION:
		  fprintf(stderr, "DEBUG: Gimp-Print set dimension %s to %s\n",
			  desc.name, val);
		  stp_set_dimension_parameter(v, desc.name, atoi(val));
		  break;
		case STP_PARAMETER_TYPE_BOOLEAN:
		  fprintf(stderr, "DEBUG: Gimp-Print set bool %s to %s\n",
			  desc.name, val);
		  stp_set_boolean_parameter
		    (v, desc.name, strcmp(val, "True") == 0 ? 1 : 0);
		  break;
		case STP_PARAMETER_TYPE_CURVE: /* figure this out later... */
		case STP_PARAMETER_TYPE_FILE: /* Probably not, security hole */
		case STP_PARAMETER_TYPE_RAW: /* figure this out later, too */
		  fprintf(stderr, "DEBUG: Gimp-Print ignoring option %s %s type %d\n",
			  desc.name, val, desc.p_type);
		  break;
		default:
		  break;
		}
	    }	  
	}
      stp_parameter_description_destroy(&desc);
      stp_free(ppd_option_name);
    }
  stp_parameter_list_destroy(params);
}

/*
 * 'main()' - Main entry and processing of driver.
 */

int					/* O - Exit status */
main(int  argc,				/* I - Number of command-line arguments */
     char *argv[])			/* I - Command-line arguments */
{
  int			fd;		/* File descriptor */
  cups_image_t		cups;		/* CUPS image */
  const char		*ppdfile;	/* PPD environment variable */
  ppd_file_t		*ppd;		/* PPD file */
  const stp_printer_t	*printer;	/* Printer driver */
  int			num_options;	/* Number of CUPS options */
  cups_option_t		*options;	/* CUPS options */
  stp_vars_t		*v = NULL;
  stp_vars_t		*default_settings;
  int			initialized_job = 0;

 /*
  * Initialise libgimpprint
  */

  theImage.rep = &cups;

  stp_init();
  default_settings = stp_vars_create();
 /*
  * Check for valid arguments...
  */
  fprintf(stderr, "DEBUG: Gimp-Print %s Starting\n", VERSION);

  if (argc < 6 || argc > 7)
  {
   /*
    * We don't have the correct number of arguments; write an error message
    * and return.
    */

    fputs("ERROR: Gimp-Print rastertoprinter job-id user title copies options [file]\n", stderr);
    return (1);
  }

 /*
  * Get the PPD file...
  */

  if ((ppdfile = getenv("PPD")) == NULL)
  {
    fputs("ERROR: Gimp-Print Fatal error: PPD environment variable not set!\n", stderr);
    return (1);
  }
  fprintf(stderr, "DEBUG: Gimp-Print using PPD file %s\n", ppdfile);

  if ((ppd = ppdOpenFile(ppdfile)) == NULL)
  {
    fprintf(stderr, "ERROR: Gimp-Print Fatal error: Unable to load PPD file \"%s\"!\n",
            ppdfile);
    return (1);
  }

  if (ppd->modelname == NULL)
  {
    fprintf(stderr, "ERROR: Gimp-Print Fatal error: No ModelName attribute in PPD file \"%s\"!\n",
            ppdfile);
    ppdClose(ppd);
    return (1);
  }

  if (ppd->nickname == NULL)
  {
    fprintf(stderr, "ERROR: Gimp-Print Fatal error: No NickName attribute in PPD file \"%s\"!\n",
            ppdfile);
    ppdClose(ppd);
    return (1);
  }
  else if (strlen(ppd->nickname) <
	   strlen(ppd->modelname) + strlen(CUPS_PPD_NICKNAME_STRING) + 3)
  {
    fprintf(stderr, "ERROR: Gimp-Print Fatal error: Corrupted NickName attribute in PPD file \"%s\"!\n",
            ppdfile);
    ppdClose(ppd);
    return (1);
  }
  else if (strcmp(ppd->nickname + strlen(ppd->modelname) +
		  strlen(CUPS_PPD_NICKNAME_STRING), VERSION) != 0)
  {
    fprintf(stderr, "ERROR: Gimp-Print: The version of Gimp-Print software installed (%s) does not match the PPD file (%s).\n",
	    VERSION,
	    ppd->nickname+strlen(ppd->modelname)+strlen(CUPS_PPD_NICKNAME_STRING));
    fprintf(stderr, "ERROR: Gimp-Print: If you have upgraded your version of Gimp-Print\n");
    fprintf(stderr, "ERROR: Gimp-Print: recently, you must reinstall all printer queues.\n");
    fprintf(stderr, "ERROR: Gimp-Print: If the previous installed version of Gimp-Print\n");
    fprintf(stderr, "ERROR: Gimp-Print: was 4.3.19 or higher, you can use the `cups-genppdupdate.%s'\n", GIMPPRINT_RELEASE_VERSION);
    fprintf(stderr, "ERROR: Gimp-Print: program to do this; if the previous installed version\n");
    fprintf(stderr, "ERROR: Gimp-Print: was older, you can use the Modify Printer command via\n");
    fprintf(stderr, "ERROR: Gimp-Print: the CUPS web interface: http://localhost:631/printers.\n");
    /*
     * Repeat the first line of the message so that CUPS will display it
     */
    fprintf(stderr, "ERROR: Gimp-Print: The version of Gimp-Print software installed (%s) does not match the PPD file (%s).\n",
	    VERSION,
	    ppd->nickname+strlen(ppd->modelname)+strlen(CUPS_PPD_NICKNAME_STRING));
    ppdClose(ppd);
    return 1;
  }

 /*
  * Get the STP options, if any...
  */

  num_options = cupsParseOptions(argv[5], 0, &options);

  fprintf(stderr, "DEBUG: Gimp-Print CUPS option count is %d (%d bytes)\n",
	  num_options, strlen(argv[5]));

  if (num_options > 0)
    {
      int i;
      for (i = 0; i < num_options; i++)
	fprintf(stderr, "DEBUG: Gimp-Print    CUPS option %d %s = %s\n",
		i, options[i].name, options[i].value);
    }

 /*
  * Figure out which driver to use...
  */

  printer = stp_get_printer_by_driver(ppd->modelname);
  if (!printer)
    printer = stp_get_printer_by_long_name(ppd->modelname);
  
  if (printer == NULL)
    {
      fprintf(stderr, "ERROR: Gimp-Print Fatal error: Unable to find driver named \"%s\"!\n",
              ppd->modelname);
      ppdClose(ppd);
      return (1);
    }
  fprintf(stderr, "DEBUG: Gimp-Print driver %s\n", ppd->modelname);

 /*
  * Open the page stream...
  */

  if (argc == 7)
  {
    if ((fd = open(argv[6], O_RDONLY)) == -1)
    {
      perror("ERROR: Gimp-Print Unable to open raster file - ");
      sleep(1);
      return (1);
    }
  }
  else
    fd = 0;
  fprintf(stderr, "DEBUG: Gimp-Print using fd %d\n", fd);

  stp_set_printer_defaults(default_settings, printer);
  stp_set_float_parameter(default_settings, "AppGamma", 1.0);
  set_all_options(default_settings, options, num_options, ppd);
  stp_merge_printvars(default_settings, stp_printer_get_defaults(printer));
  ppdClose(ppd);

  cups.ras = cupsRasterOpen(fd, CUPS_RASTER_READ);

 /*
  * Process pages as needed...
  */

  cups.page = 0;

  fprintf(stderr, "DEBUG: Gimp-Print about to start printing loop.\n");

  /*
   * Read the first page header, which we need in order to set up
   * the page.
   */
  signal(SIGTERM, cancel_job);
  while (cupsRasterReadHeader(cups.ras, &cups.header))
    {
      /*
       * We don't know how many pages we're going to print, and
       * we need to call stp_end_job at the completion of the job.
       * Therefore, we need to keep v in scope after the termination
       * of the loop to permit calling stp_end_job then.  Therefore,
       * we have to free the previous page's stp_vars_t at the start
       * of the loop.
       */
      if (v)
	stp_vars_destroy(v);

      /*
       * Setup printer driver variables...
       */
      v = initialize_page(&cups, default_settings);
      stp_set_int_parameter(v, "PageNumber", cups.page);
      cups.row = 0;
      fprintf(stderr, "DEBUG: Gimp-Print printing page %d\n", cups.page + 1);
      fprintf(stderr, "PAGE: %d 1\n", cups.page + 1);
      print_debug_block(v, &cups);
      if (!stp_verify(v))
	{
	  fprintf(stderr, "ERROR: Gimp-Print: options failed to verify.\n");
	  fprintf(stderr, "ERROR: Gimp-Print: Make sure that you are using ESP Ghostscript rather\n");
	  fprintf(stderr, "ERROR: Gimp-Print: than GNU or AFPL Ghostscript with CUPS.\n");
	  fprintf(stderr, "ERROR: Gimp-Print: If this is not the cause, set LogLevel to debug2 to identify the problem.\n");
	  goto cups_abort;
	}

      if (!initialized_job)
	{
	  stp_start_job(v, &theImage);
	  initialized_job = 1;
	}

      if (!stp_print(v, &theImage))
	{
	  fprintf(stderr, "ERROR: Gimp-Print failed to print, set LogLevel to debug2 to identify why\n");
	  goto cups_abort;
	}

      fflush(stdout);

      /*
       * Purge any remaining bitmap data...
       */
      if (cups.row < cups.header.cupsHeight)
	purge_excess_data(&cups);
      cups.page ++;
    }
  if (v)
    {
      fprintf(stderr, "DEBUG: Gimp-Print ending job\n");
      stp_end_job(v, &theImage);
      stp_vars_destroy(v);
    }
  cupsRasterClose(cups.ras);
  fprintf(stderr, "DEBUG: Gimp-Print printed total %.0f bytes\n",
	  total_bytes_printed);
  fputs("INFO: Gimp-Print Ready to print.\n", stderr);
  if (fd != 0)
    close(fd);
  return 0;

cups_abort:
  fprintf(stderr, "DEBUG: Gimp-Print printed total %.0f bytes\n",
	  total_bytes_printed);
  fputs("ERROR: Gimp-Print Invalid printer settings!\n", stderr);
  stp_end_job(v, &theImage);
  stp_vars_destroy(v);
  cupsRasterClose(cups.ras);
  fputs("ERROR: Gimp-Print No pages found!\n", stderr);
  if (fd != 0)
    close(fd);
  return 1;
}


/*
 * 'cups_writefunc()' - Write data to a file...
 */

static void
cups_writefunc(void *file, const char *buf, size_t bytes)
{
  FILE *prn = (FILE *)file;
  total_bytes_printed += bytes;
  fwrite(buf, 1, bytes, prn);
}

static void
cups_errfunc(void *file, const char *buf, size_t bytes)
{
  size_t next_nl = 0;
  size_t where = 0;
  FILE *prn = (FILE *)file;
  while (where < bytes)
    {
      fputs("DEBUG: Gimp-Print internal: ", prn);
      while (next_nl < bytes)
	{
	  if (buf[next_nl++] == '\n')
	    break;
	}
      fwrite(buf + where, 1, next_nl - where, prn);
      where = next_nl;
    }	
}


/*
 * 'cancel_job()' - Cancel the current job...
 */

void
cancel_job(int sig)			/* I - Signal */
{
  (void)sig;
  Image_status = STP_IMAGE_STATUS_ABORT;
}

/*
 * 'Image_get_appname()' - Get the application we are running.
 */

static const char *				/* O - Application name */
Image_get_appname(stp_image_t *image)		/* I - Image */
{
  (void)image;

  return ("CUPS 1.1.x driver based on Gimp-Print");
}


/*
 * 'Image_get_row()' - Get one row of the image.
 */

static void
throwaway_data(int amount, cups_image_t *cups)
{
  unsigned char trash[4096];	/* Throwaway */
  int block_count = amount / 4096;
  int leftover = amount % 4096;
  while (block_count > 0)
    {
      cupsRasterReadPixels(cups->ras, trash, 4096);
      block_count--;
    }
  if (leftover)
    cupsRasterReadPixels(cups->ras, trash, leftover);
}

stp_image_status_t
Image_get_row(stp_image_t   *image,	/* I - Image */
	      unsigned char *data,	/* O - Row */
	      size_t	    byte_limit,	/* I - how many bytes in data */
	      int           row)	/* I - Row number (unused) */
{
  cups_image_t	*cups;			/* CUPS image */
  int		i;			/* Looping var */
  int 		bytes_per_line;
  int		margin;
  stp_image_status_t tmp_image_status = Image_status;
  unsigned char *orig = data;           /* Temporary pointer */
  static int warned = 0;                /* Error warning printed? */
  int new_percent;

  if ((cups = (cups_image_t *)(image->rep)) == NULL)
    {
      fprintf(stderr, "ERROR: Gimp-Print image is null!  Please report this bug to gimp-print-devel@lists.sourceforge.net\n");
      return STP_IMAGE_STATUS_ABORT;
    }
  bytes_per_line =
    ((cups->adjusted_width * cups->header.cupsBitsPerPixel) + CHAR_BIT - 1) /
    CHAR_BIT;
  margin = cups->header.cupsBytesPerLine - bytes_per_line;

  if (cups->row < cups->header.cupsHeight)
  {
    fprintf(stderr, "DEBUG2: Gimp-Print reading %d %d\n",
	    bytes_per_line, cups->row);
    while (cups->row <= row && cups->row < cups->header.cupsHeight)
      {
	cupsRasterReadPixels(cups->ras, data, bytes_per_line);
	cups->row ++;
	if (margin > 0)
	  {
	    fprintf(stderr, "DEBUG2: Gimp-Print tossing right %d\n", margin);
	    throwaway_data(margin, cups);
	  }
      }
  }
  else
    {
      switch (cups->header.cupsColorSpace)
	{
	case CUPS_CSPACE_K:
	case CUPS_CSPACE_CMYK:
	case CUPS_CSPACE_KCMY:
	case CUPS_CSPACE_CMY:
	  memset(data, 0, bytes_per_line);
	  break;
	case CUPS_CSPACE_RGB:
	case CUPS_CSPACE_W:
	  memset(data, ((1 << CHAR_BIT) - 1), bytes_per_line);
	  break;
	default:
	  fprintf(stderr, "ERROR: Gimp-Print Unknown colorspace %d!\n",
		  cups->header.cupsColorSpace);
	  return STP_IMAGE_STATUS_ABORT;
	}
    }

  /*
   * This exists to print non-ADSC input which has messed up the job
   * input, such as that generated by psnup.  The output is barely
   * legible, but it's better than the garbage output otherwise.
   */
  data = orig;
  if (cups->header.cupsBitsPerPixel == 1)
    {
      if (warned == 0)
	{
	  fprintf(stderr,
		  "WARNING: Gimp-Print detected broken job options.  "
		  "Output quality is degraded.  Are you using psnup or non-ADSC PostScript?\n");
	  warned = 1;
	}
      for (i = cups->adjusted_width - 1; i >= 0; i--)
	{
	  if ( (data[i/8] >> (7 - i%8)) &0x1)
	    data[i]=255;
	  else
	    data[i]=0;
	}
    }

  new_percent = (int) (100.0 * cups->row / cups->header.cupsHeight);
  if (new_percent > cups->last_percent)
    {
      fprintf(stderr, "INFO: Gimp-Print Printing page %d, %d%%\n",
	      cups->page + 1, new_percent);
      cups->last_percent = new_percent;
    }

  if (tmp_image_status != STP_IMAGE_STATUS_OK)
    fprintf(stderr, "DEBUG: Gimp-Print image status %d\n", tmp_image_status);
  return tmp_image_status;
}


/*
 * 'Image_height()' - Return the height of an image.
 */

static int				/* O - Height in pixels */
Image_height(stp_image_t *image)	/* I - Image */
{
  cups_image_t	*cups;		/* CUPS image */


  if ((cups = (cups_image_t *)(image->rep)) == NULL)
    return (0);

  fprintf(stderr, "DEBUG: Gimp-Print: Image_height %d\n", cups->adjusted_height);
  return (cups->adjusted_height);
}


/*
 * 'Image_init()' - Initialize an image.
 */

static void
Image_init(stp_image_t *image)		/* I - Image */
{
  cups_image_t	*cups;		/* CUPS image */

  if ((cups = (cups_image_t *)(image->rep)) == NULL)
    return;
  cups->last_percent = 0;

  fprintf(stderr, "INFO: Starting page %d...\n", cups->page + 1);
  /* cups->page + 1 because users expect 1-based counting */
}

/*
 * 'Image_progress_conclude()' - Close the progress display.
 */

static void
Image_conclude(stp_image_t *image)	/* I - Image */
{
  cups_image_t	*cups;		/* CUPS image */


  if ((cups = (cups_image_t *)(image->rep)) == NULL)
    return;

  fprintf(stderr, "INFO: Gimp-Print Finished page %d...\n", cups->page + 1);
}

/*
 * 'Image_width()' - Return the width of an image.
 */

static int				/* O - Width in pixels */
Image_width(stp_image_t *image)	/* I - Image */
{
  cups_image_t	*cups;		/* CUPS image */


  if ((cups = (cups_image_t *)(image->rep)) == NULL)
    return (0);

  fprintf(stderr, "DEBUG: Gimp-Print: Image_width %d\n", cups->adjusted_width);
  return (cups->adjusted_width);
}


/*
 * End of "$Id: rastertoprinter.c,v 1.1.1.4 2004/12/22 23:49:34 jlovell Exp $".
 */