/* Copyright (c) 2003-2004, AXE, Inc.  All rights reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  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, write to:

  Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor
  Boston, MA 02110-1301
  USA

*/

/* $Id: gdevopvp.c 728 2008-03-03 02:56:05Z sho-otani $ */
/* gdevopvp.c  ver.1.00 rel.1.0     26 Nov 2004 */
/* OpenPrinting Vector Printer Driver Glue Code */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <locale.h>
#include <langinfo.h>
#include <dlfcn.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

/* Set compatibility flag just in case we have GNU iconv.h */
#ifndef USE_LIBICONV_GNU
#  define LIBICONV_PLUG
#endif
#include <iconv.h>

#include "string_.h"
#include "math_.h"
#include "gx.h"

#include "gscdefs.h"
#include "gsexit.h"
#include "gsstruct.h"
#include "gserrors.h"
#include "gsmatrix.h"
#include "gsparam.h"
#include "gxdevice.h"
#include "gxdcconv.h"
#include "gscspace.h"
#include "gsutil.h"
#include "gdevprn.h"
#include "gdevvec.h"
#include "spprint.h"
#include "ghost.h"
#include "gzstate.h"

#include "gspath.h"
#include "gzpath.h"
#include "gzcpath.h"
#include "gsropt.h"
#include "gsiparam.h"
#include "gxxfont.h"

/* added for image gamma correction */
#include "gximage.h"
#include "gxfmap.h"
#include "gxfrac.h"
#include "gxcvalue.h"

#include "opvp_common.h"

#define ENABLE_SIMPLE_MODE      1
#define ENABLE_SKIP_RASTER      1
#define ENABLE_AUTO_REVERSE     1

/* ----- data types/macros ----- */

/* for debug */
#ifdef  printf
#undef  printf
#endif
#ifdef  fprintf
#undef  fprintf
#endif

/* buffer */
#define OPVP_BUFF_SIZE  1024

/* ROP */
#define OPVP_0_2_ROP_S  0xCC
#define OPVP_0_2_ROP_P  0xF0
#define OPVP_0_2_ROP_OR 0xB8

/* paper */
#define PS_DPI          72
#define MMPI            25.4
#define TOLERANCE       3.0

typedef struct {
    const char *region;
    const char *name;
    float width;
    float height;
} OPVP_Paper;

#define X_DPI           300
#define Y_DPI           300

#define MAX_PATH_POINTS 1000

/* driver */
typedef struct  gx_device_opvp_s {
    gx_device_vector_common;
} gx_device_opvp;

typedef struct  gx_device_oprp_s {
    gx_device_common;
    gx_prn_device_common;
} gx_device_oprp;

/* point (internal) */
typedef struct {
    double x;
    double y;
} _fPoint;

/* ----- private function prototypes ----- */

/* Utilities */
static  int opvp_startpage(gx_device *);
static  int opvp_endpage(void);
static  char *opvp_alloc_string(char **, const char *);
static  char *opvp_cat_string(char **, const char *);
static  char *opvp_adjust_num_string(char *);
static  char **opvp_gen_dynamic_lib_name(void);
static  char *opvp_to_utf8(char *);
#define opvp_check_in_page(pdev)        \
                ((beginPage) || (inkjet) ? 0 \
                    : (*vdev_proc(pdev, beginpage))((gx_device_vector*)pdev))
static  int opvp_get_papertable_index(gx_device *);
static  char *opvp_get_sizestring(float, float);
/* not used     static  const char *opvp_get_papersize_region(gx_device *);*/
/* not used     static  const char *opvp_get_papersize_name(gx_device *);*/
/* not used     static  char *opvp_get_papersize_inch(gx_device *);*/
/* not used     static  const char *opvp_get_papersize(gx_device *);*/
static  char *opvp_get_mediasize(gx_device *);
static  char *opvp_gen_page_info(gx_device *);
static  char *opvp_gen_doc_info(gx_device *);
static  char *opvp_gen_job_info(gx_device *);
static  int opvp_set_brush_color(gx_device_opvp *, gx_color_index,
                                 opvp_brush_t *);
static  int opvp_draw_image(gx_device_opvp *, int,
                            int, int, int, int, int, int, const byte *);

/* load/unload vector driver */
static  int opvp_load_vector_driver(void);
static  int opvp_unload_vector_driver(void);
static  int prepare_open(gx_device *);

/* driver procs */
static  int opvp_open(gx_device *);
static  int oprp_open(gx_device *);
static  void opvp_get_initial_matrix(gx_device *, gs_matrix *);
static  int opvp_output_page(gx_device *, int, int);
static  int opvp_close(gx_device *);
#if GS_VERSION_MAJOR >= 8
static  gx_color_index opvp_map_rgb_color(gx_device *, const gx_color_value *); /* modified for gs 8.15 */
#else
static  gx_color_index opvp_map_rgb_color(gx_device *, gx_color_value,
                       gx_color_value, gx_color_value);
#endif
static  int opvp_map_color_rgb(gx_device *, gx_color_index, gx_color_value *);
static  int opvp_copy_mono(gx_device *, const byte *, int, int,
                           gx_bitmap_id, int, int, int, int,
                           gx_color_index, gx_color_index);
static  int opvp_copy_color(gx_device *, const byte *, int, int,
                            gx_bitmap_id, int, int, int, int);
static  int _get_params(gs_param_list *);
static  int opvp_get_params(gx_device *, gs_param_list *);
static  int oprp_get_params(gx_device *, gs_param_list *);
static  int _put_params(gs_param_list *);
static  int opvp_put_params(gx_device *, gs_param_list *);
static  int oprp_put_params(gx_device *, gs_param_list *);
static  int opvp_fill_path(gx_device *, const gs_imager_state *, gx_path *,
                           const gx_fill_params *, const gx_device_color *,
                           const gx_clip_path *);
static  int opvp_stroke_path(gx_device *, const gs_imager_state *, gx_path *,
                             const gx_stroke_params *, const gx_drawing_color *,
                             const gx_clip_path *);
static  int opvp_fill_mask(gx_device *, const byte *, int, int, gx_bitmap_id,
                           int, int, int, int, const gx_drawing_color *,
                           int, gs_logical_operation_t, const gx_clip_path *);

/* available color spaces */

static char cspace_available[] = {
        0, /* OPVP_CSPACE_BW */
        0, /* OPVP_CSPACE_DEVICEGRAY */
        0, /* OPVP_CSPACE_DEVICECMY */
        0, /* OPVP_CSPACE_DEVICECMYK */
        0, /* OPVP_CSPACE_DEVICERGB */
        0, /* OPVP_CSPACE_DEVICEKRGB */
        1, /* OPVP_CSPACE_STANDARDRGB */
        0 /* OPVP_CSPACE_STANDARDRGB64 */
};

/* vector driver procs */
static  int opvp_beginpage(gx_device_vector *);
static  int opvp_setlinewidth(gx_device_vector *, double);
static  int opvp_setlinecap(gx_device_vector *, gs_line_cap);
static  int opvp_setlinejoin(gx_device_vector *, gs_line_join);
static  int opvp_setmiterlimit(gx_device_vector *, double);
static  int opvp_setdash(gx_device_vector *, const float *, uint, double);
static  int opvp_setflat(gx_device_vector *, double);
static  int opvp_setlogop(gx_device_vector *, gs_logical_operation_t,
                          gs_logical_operation_t);
#if GS_VERSION_MAJOR >= 8
static  int opvp_can_handle_hl_color(gx_device_vector *, const gs_imager_state *, const gx_drawing_color *);
static  int opvp_setfillcolor(gx_device_vector *, const gs_imager_state *, const gx_drawing_color *);
static  int opvp_setstrokecolor(gx_device_vector *, const gs_imager_state *,const gx_drawing_color *);
#else
static  int opvp_setfillcolor(gx_device_vector *, const gx_drawing_color *);
static  int opvp_setstrokecolor(gx_device_vector *, const gx_drawing_color *);
#endif
static  int opvp_vector_dopath(gx_device_vector *, const gx_path *,
                               gx_path_type_t, const gs_matrix *);
static  int opvp_vector_dorect(gx_device_vector *, fixed, fixed, fixed, fixed,
                               gx_path_type_t);
static  int opvp_beginpath(gx_device_vector *, gx_path_type_t);
static  int opvp_moveto(gx_device_vector *, double, double, double, double,
                        gx_path_type_t);
static  int opvp_lineto(gx_device_vector *, double, double, double, double,
                        gx_path_type_t);
static  int opvp_curveto(gx_device_vector *, double, double, double, double,
                         double, double, double, double, gx_path_type_t);
static  int opvp_closepath(gx_device_vector *, double, double, double, double,
                           gx_path_type_t);
static  int opvp_endpath(gx_device_vector *, gx_path_type_t);

/* ----- Paper definition ----- */
OPVP_Paper      paperTable[] =
{
#if 0
        {"jpn","hagaki",100/MMPI*PS_DPI,148/MMPI*PS_DPI},
        {"iso","a6"    ,105/MMPI*PS_DPI,148/MMPI*PS_DPI},
        {"jis","b6"    ,128/MMPI*PS_DPI,182/MMPI*PS_DPI},
        {"jpn","oufuku",148/MMPI*PS_DPI,200/MMPI*PS_DPI},
        {"iso","a5"    ,148/MMPI*PS_DPI,210/MMPI*PS_DPI},
        {"jis","b5"    ,182/MMPI*PS_DPI,257/MMPI*PS_DPI},
        {"iso","a4"    ,210/MMPI*PS_DPI,297/MMPI*PS_DPI},
        {"na" ,"letter",     8.5*PS_DPI,      11*PS_DPI},/* 215.9x279.4 */
        {"na" ,"legal" ,     8.5*PS_DPI,      14*PS_DPI},/* 215.9x355.6 */
        {"jis","b4"    ,257/MMPI*PS_DPI,364/MMPI*PS_DPI},
        {"iso","a3"    ,297/MMPI*PS_DPI,420/MMPI*PS_DPI},
#else
#include "opvp_media.def"
#endif
        {NULL ,NULL    ,              0,              0}
};

/* ----- Driver definition ----- */

/* Driver procedures */
static  dev_proc_open_device(opvp_open);
static  dev_proc_open_device(oprp_open);
static  dev_proc_output_page(opvp_output_page);
static  dev_proc_print_page(oprp_print_page);
static  dev_proc_close_device(opvp_close);
static  dev_proc_get_params(opvp_get_params);
static  dev_proc_get_params(oprp_get_params);
static  dev_proc_put_params(opvp_put_params);
static  dev_proc_put_params(oprp_put_params);
static  dev_proc_fill_rectangle(opvp_fill_rectangle);
static  dev_proc_begin_image(opvp_begin_image);
static  image_enum_proc_plane_data(opvp_image_plane_data);
static  image_enum_proc_end_image(opvp_image_end_image);

gs_public_st_suffix_add0_final(
    st_device_opvp,
    gx_device_opvp,
    "gx_device_opvp",
    device_opvp_enum_ptrs,
    device_opvp_reloc_ptrs,
    gx_device_finalize,
    st_device_vector
);

#define opvp_initial_values     \
    NULL, /* *vectorDriver */\
    NULL, /* *printerModel */\
    NULL, /* *handle */\
    NULL, /* (*OpenPrinter)() */\
    NULL, /* *ErrorNo */\
    -1, /* outputFD */\
    0,  /* nApiEntry */\
    NULL, /* *apiEntry */\
    -1, /* printerContext */\
    NULL, /* *jobInfo */\
    NULL /* *docInfo */

/* device procs */
#define opvp_procs \
{\
    opvp_open,\
    opvp_get_initial_matrix,\
    NULL, /* sync_output */\
    opvp_output_page,\
    opvp_close,\
    opvp_map_rgb_color,\
    opvp_map_color_rgb,\
    opvp_fill_rectangle, /*gdev_vector_fill_rectangle,*/\
    NULL, /* tile_rectangle OBSOLETE */\
    opvp_copy_mono,\
    opvp_copy_color,\
    NULL, /* draw_line OBSOLETE */\
    NULL, /* get_bits */\
    opvp_get_params,\
    opvp_put_params,\
    NULL, /* map_cmyk_color */\
    NULL, /* get_xfont_procs */\
    NULL, /* get_xfont_device */\
    NULL, /* map_rgb_alpha_color */\
    gx_page_device_get_page_device,\
    NULL, /* get_alpha_bits OBSOLETE */\
    NULL, /* copy_alpha */\
    NULL, /* get_band */\
    NULL, /* copy_rop */\
    opvp_fill_path,\
    opvp_stroke_path,\
    opvp_fill_mask,\
    gdev_vector_fill_trapezoid,\
    gdev_vector_fill_parallelogram,\
    gdev_vector_fill_triangle,\
    NULL, /* draw_thin_line */\
    opvp_begin_image,\
    NULL, /* image_data */\
    NULL, /* end_image */\
    NULL, /* strip_tile_rectangle */\
    NULL, /* strip_copy_rop */\
    NULL, /* get_clipping_box */\
    NULL, /* begin_typed_image */\
    NULL, /* get_bits_rectangle */\
    NULL, /* map_color_rgb_alpha */\
    NULL, /* create_compositor */\
    NULL, /* get_hardware_params */\
    NULL, /* text_begin */\
    NULL, /* finish_copydevice */\
    NULL, /* begin_transparency_group */\
    NULL, /* end_transparency_group */\
    NULL, /* begin_transparency_mask */\
    NULL, /* end_transparency_mask */\
    NULL  /* discard_transparency_layer */\
}

/* vector procs */
static  gx_device_vector_procs  opvp_vector_procs =
{
    /* Page management */
    opvp_beginpage,
    /* Imager state */
    opvp_setlinewidth,
    opvp_setlinecap,
    opvp_setlinejoin,
    opvp_setmiterlimit,
    opvp_setdash,
    opvp_setflat,
    opvp_setlogop,
    /* Other state */
#if GS_VERSION_MAJOR >= 8
    opvp_can_handle_hl_color,           /* added for gs 8.15 */
#endif
    opvp_setfillcolor,
    opvp_setstrokecolor,
    /* Paths */
    opvp_vector_dopath,
    opvp_vector_dorect,
    opvp_beginpath,
    opvp_moveto,
    opvp_lineto,
    opvp_curveto,
    opvp_closepath,
    opvp_endpath
};

const   gx_device_opvp          gs_opvp_device =
{
    std_device_dci_type_body(
        gx_device_opvp,
        0,
        "opvp",
        &st_device_opvp,
        DEFAULT_WIDTH_10THS_A4  * X_DPI / 10,
        DEFAULT_HEIGHT_10THS_A4 * Y_DPI / 10,
        X_DPI,
        Y_DPI,
        3,
        24,
        255,
        255,
        256,
        256
    ),
    opvp_procs
};

/* for inkjet */
static  gx_device_procs prn_oprp_procs =
    prn_color_params_procs(
        oprp_open,
        opvp_output_page,
        opvp_close,
        opvp_map_rgb_color,
        opvp_map_color_rgb,
        oprp_get_params,
        oprp_put_params
    );

const gx_device_oprp gs_oprp_device =
{
    prn_device_std_margins_body(
        gx_device_oprp,
        prn_oprp_procs,
        "oprp",
        DEFAULT_WIDTH_10THS_A4,
        DEFAULT_HEIGHT_10THS_A4,
        X_DPI,
        Y_DPI,
        0, 0, 0, 0, 0, 0,
        24,
        oprp_print_page
    )
};

/* driver mode */
static bool vector = true;
static bool inkjet = false;
static char *vectorDriver = NULL;
static char *printerModel = NULL;
static void *handle = NULL;
static opvp_dc_t (*OpenPrinter)(opvp_int_t,const opvp_char_t*,
                                  const opvp_int_t[2],
                                  opvp_api_procs_t**) = NULL;
static int (*OpenPrinter_0_2)(int,char*,int*,
                                  OPVP_api_procs**) = NULL;
static opvp_int_t *ErrorNo = NULL;
static opvp_int_t outputFD = -1;
static opvp_int_t nApiEntry = 0;
static opvp_api_procs_t *apiEntry = NULL;
static OPVP_api_procs *apiEntry_0_2 = NULL;
static opvp_dc_t printerContext = -1;
static char *jobInfo = NULL;
static char *docInfo = NULL;
static opvp_cspace_t colorSpace = OPVP_CSPACE_STANDARDRGB;
static opvp_cspace_t savedColorSpace;
static opvp_brush_t *vectorFillColor = NULL;
static float margins[4] = {0, 0, 0, 0};
static float zoom[2] = {1, 1};
static float shift[2] = {0, 0};
static bool zoomAuto = false;
static bool zooming = false;
static bool beginPage = false;

static int
GetLastError_1_0(void)
{
    return *ErrorNo;
}

static int (*GetLastError)(void) = GetLastError_1_0;

/* Wrapper functions that keep compatible with 0.2 */

/* color space mapping 0.2 to 1.0 */
static opvp_cspace_t cspace_0_2_to_1_0[] = {
    OPVP_CSPACE_BW,
    OPVP_CSPACE_DEVICEGRAY,
    OPVP_CSPACE_DEVICECMY,
    OPVP_CSPACE_DEVICECMYK,
    OPVP_CSPACE_DEVICERGB,
    OPVP_CSPACE_STANDARDRGB,
    OPVP_CSPACE_STANDARDRGB64
};

/* color space mapping 1.0 to 0.2 */
static OPVP_ColorSpace cspace_1_0_to_0_2[] = {
    OPVP_cspaceBW,
    OPVP_cspaceDeviceGray,
    OPVP_cspaceDeviceCMY,
    OPVP_cspaceDeviceCMYK,
    OPVP_cspaceDeviceRGB,
    0, /* 0.2 doesn't have OPVP_CSPACE_DEVICEKRGB */
    OPVP_cspaceStandardRGB,
    OPVP_cspaceStandardRGB64,
};

/* image format mapping 1.0 to 0.2 */
static OPVP_ImageFormat iformat_1_0_to_0_2[] = {
    OPVP_iformatRaw,
    OPVP_iformatRaw, /* OPVP_IFORMAT_MASK use iformat raw in 0.2 */
    OPVP_iformatRLE,
    OPVP_iformatJPEG,
    OPVP_iformatPNG,
};
/* image colorDepth needed in 0.2 */
static int colorDepth_0_2[] = {
    1, /* OPVP_CSPACE_BW */
    8, /* OPVP_CSPACE_DEVICEGRAY */
    24, /* OPVP_CSPACE_DEVICECMY */
    32, /* OPVP_CSPACE_DEVICECMYK */
    24, /* OPVP_CSPACE_DEVICERGB */
    32, /* OPVP_CSPACE_DEVICEKRGB */
    24, /* OPVP_CSPACE_STANDARDRGB */
    64, /* OPVP_CSPACE_STANDARDRGB64 */
};

/* translate error code */
static int
GetLastError_0_2(void)
{
    switch(*ErrorNo) {
    case OPVP_FATALERROR_0_2:
        return OPVP_FATALERROR;
        break;
    case OPVP_BADREQUEST_0_2:
        return OPVP_BADREQUEST;
        break;
    case OPVP_BADCONTEXT_0_2:
        return OPVP_BADCONTEXT;
        break;
    case OPVP_NOTSUPPORTED_0_2:
        return OPVP_NOTSUPPORTED;
        break;
    case OPVP_JOBCANCELED_0_2:
        return OPVP_JOBCANCELED;
        break;
    case OPVP_PARAMERROR_0_2:
        return OPVP_PARAMERROR;
        break;
    default:
        break;
    }
    /* unknown error no */
    /* return FATALERROR instead */
    return OPVP_FATALERROR;
}

static opvp_result_t
StartPageWrapper(opvp_dc_t printerContext, const opvp_char_t *pageInfo)
{
    int r;

    if ((r = apiEntry_0_2->StartPage(printerContext,
           /* discard const */(char *)pageInfo)) != OPVP_OK) {
          /* error */
        return r;
    }
    /* initialize ROP */
    if (apiEntry_0_2->SetROP != NULL) {
        apiEntry_0_2->SetROP(printerContext,
          OPVP_0_2_ROP_P);
    }
    return OPVP_OK;
}

static opvp_result_t
InitGSWrapper(opvp_dc_t printerContext)
{
    int r;

    if ((r = apiEntry_0_2->InitGS(printerContext)) != OPVP_OK) {
          /* error */
        return r;
    }
    /* initialize ROP */
    if (apiEntry_0_2->SetROP != NULL) {
        apiEntry_0_2->SetROP(printerContext,
          OPVP_0_2_ROP_P);
    }
    return OPVP_OK;
}

static opvp_result_t
QueryColorSpaceWrapper( opvp_dc_t printerContext, opvp_int_t *pnum,
    opvp_cspace_t *pcspace)
{
    int r;
    int i;

    if ((r = apiEntry_0_2->QueryColorSpace(printerContext,
         (OPVP_ColorSpace *)pcspace,pnum)) != OPVP_OK) {
        /* error */
        return r;
    }
    /* translate cspaces */
    for (i = 0;i < *pnum;i++) {
        if (pcspace[i]
             >= sizeof(cspace_0_2_to_1_0)/sizeof(opvp_cspace_t)) {
            /* unknown color space */
            /* set DEVICERGB instead */
            pcspace[i] = OPVP_CSPACE_DEVICERGB;
        } else {
            pcspace[i] = cspace_0_2_to_1_0[pcspace[i]];
        }
    }
    return OPVP_OK;
}

static opvp_result_t
SetColorSpaceWrapper(opvp_dc_t printerContext, opvp_cspace_t cspace)
{
    if (cspace == OPVP_CSPACE_DEVICEKRGB) {
        /* 0.2 doesn't have OPVP_CSPACE_DEVICEKRGB */
        *ErrorNo = OPVP_NOTSUPPORTED_0_2;
        return -1;
    }
    if ((int)cspace
         >= sizeof(cspace_1_0_to_0_2)/sizeof(OPVP_ColorSpace)) {
        /* unknown color space */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    return  apiEntry_0_2->SetColorSpace(printerContext,
      cspace_1_0_to_0_2[cspace]);
}

static opvp_result_t
GetColorSpaceWrapper(opvp_dc_t printerContext, opvp_cspace_t *pcspace)
{
    int r;

    if ((r = apiEntry_0_2->GetColorSpace(printerContext,
      (OPVP_ColorSpace *)pcspace)) != OPVP_OK) {
        /* error */
        return r;
    }
    if (*pcspace
         >= sizeof(cspace_0_2_to_1_0)/sizeof(opvp_cspace_t)) {
        /* unknown color space */
        /* set DEVICERGB instead */
        *pcspace = OPVP_CSPACE_DEVICERGB;
    } else {
        *pcspace = cspace_0_2_to_1_0[*pcspace];
    }
    return r;
}

static opvp_result_t
SetStrokeColorWrapper(opvp_dc_t printerContext, const opvp_brush_t *brush)
{
    OPVP_Brush brush_0_2;

    if (brush == NULL) {
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    if (brush->colorSpace == OPVP_CSPACE_DEVICEKRGB) {
        /* 0.2 doesn't have OPVP_CSPACE_DEVICEKRGB */
        return OPVP_NOTSUPPORTED;
    }
    if ((int)brush->colorSpace
         >= sizeof(cspace_1_0_to_0_2)/sizeof(OPVP_ColorSpace)) {
        /* unknown color space */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    brush_0_2.colorSpace = cspace_1_0_to_0_2[brush->colorSpace];
    brush_0_2.xorg = brush->xorg;
    brush_0_2.yorg = brush->yorg;
    brush_0_2.pbrush = (OPVP_BrushData *)brush->pbrush;
    memcpy(brush_0_2.color,brush->color,sizeof(brush_0_2.color));
    return apiEntry_0_2->SetStrokeColor(printerContext,&brush_0_2);
}

static opvp_result_t
SetFillColorWrapper(opvp_dc_t printerContext, const opvp_brush_t *brush)
{
    OPVP_Brush brush_0_2;

    if (brush == NULL) {
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    if (brush->colorSpace == OPVP_CSPACE_DEVICEKRGB) {
        /* 0.2 doesn't have OPVP_CSPACE_DEVICEKRGB */
        return OPVP_NOTSUPPORTED;
    }
    if ((int)brush->colorSpace
         >= sizeof(cspace_1_0_to_0_2)/sizeof(OPVP_ColorSpace)) {
        /* unknown color space */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    brush_0_2.colorSpace = cspace_1_0_to_0_2[brush->colorSpace];
    brush_0_2.xorg = brush->xorg;
    brush_0_2.yorg = brush->yorg;
    brush_0_2.pbrush = (OPVP_BrushData *)brush->pbrush;
    memcpy(brush_0_2.color,brush->color,sizeof(brush_0_2.color));
    return apiEntry_0_2->SetFillColor(printerContext,&brush_0_2);
}

static opvp_result_t
SetBgColorWrapper(opvp_dc_t printerContext, const opvp_brush_t *brush)
{
    OPVP_Brush brush_0_2;

    if (brush == NULL) {
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    if (brush->colorSpace == OPVP_CSPACE_DEVICEKRGB) {
        /* 0.2 doesn't have OPVP_CSPACE_DEVICEKRGB */
        *ErrorNo = OPVP_NOTSUPPORTED_0_2;
        return -1;
    }
    if ((int)brush->colorSpace
         >= sizeof(cspace_1_0_to_0_2)/sizeof(OPVP_ColorSpace)) {
        /* unknown color space */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    brush_0_2.colorSpace = cspace_1_0_to_0_2[brush->colorSpace];
    brush_0_2.xorg = brush->xorg;
    brush_0_2.yorg = brush->yorg;
    brush_0_2.pbrush = (OPVP_BrushData *)brush->pbrush;
    memcpy(brush_0_2.color,brush->color,sizeof(brush_0_2.color));
    return apiEntry_0_2->SetBgColor(printerContext,&brush_0_2);
}

static opvp_result_t
DrawImageWrapper(
    opvp_dc_t printerContext,
    opvp_int_t sourceWidth,
    opvp_int_t sourceHeight,
    opvp_int_t sourcePitch,
    opvp_imageformat_t imageFormat,
    opvp_int_t destinationWidth,
    opvp_int_t destinationHeight,
    const void *imagedata)
{
    int r;
    OPVP_Rectangle rect;
    OPVP_ImageFormat iformat_0_2;
    OPVP_PaintMode paintmode_0_2 = OPVP_paintModeTransparent;
    int depth;

    if (imageFormat == OPVP_IFORMAT_MASK) {
        if (apiEntry_0_2->GetPaintMode != NULL) {
            apiEntry_0_2->GetPaintMode(printerContext,
              &paintmode_0_2);
        }
        if (paintmode_0_2 != OPVP_paintModeTransparent) {
            if (apiEntry_0_2->SetROP != NULL) {
                apiEntry_0_2->SetROP(printerContext,
                    OPVP_0_2_ROP_S);
            }
        }
        else {
            if (apiEntry_0_2->SetROP != NULL) {
                apiEntry_0_2->SetROP(printerContext,
                    OPVP_0_2_ROP_OR);
            }
        }
        depth = 1;
    } else {
        if (apiEntry_0_2->SetROP != NULL) {
            apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_S);
        }
        depth = colorDepth_0_2[colorSpace];
    }

    OPVP_I2FIX(0,rect.p0.x);
    OPVP_I2FIX(0,rect.p0.y);
    OPVP_I2FIX(destinationWidth,rect.p1.x);
    OPVP_I2FIX(destinationHeight,rect.p1.y);
    if (imageFormat >= sizeof(iformat_1_0_to_0_2)/sizeof(OPVP_ImageFormat)) {
        /* illegal image format */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    iformat_0_2 = iformat_1_0_to_0_2[imageFormat];
    r = apiEntry_0_2->DrawImage(printerContext,sourceWidth,sourceHeight,
            depth,iformat_0_2,rect,
            sourcePitch*sourceHeight,
            /* remove const */ (void *)imagedata);

    if (apiEntry_0_2->SetROP != NULL) {
        apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_P);
    }

    return r;
}

static opvp_result_t
StartDrawImageWrapper(
    opvp_dc_t printerContext,
    opvp_int_t sourceWidth,
    opvp_int_t sourceHeight,
    opvp_int_t sourcePitch,
    opvp_imageformat_t imageFormat,
    opvp_int_t destinationWidth,
    opvp_int_t destinationHeight)
{
    int r;
    OPVP_Rectangle rect;
    OPVP_ImageFormat iformat_0_2;
    OPVP_PaintMode paintmode_0_2 = OPVP_paintModeTransparent;
    int depth;

    if (imageFormat == OPVP_IFORMAT_MASK) {
        if (apiEntry_0_2->GetPaintMode != NULL) {
            apiEntry_0_2->GetPaintMode(printerContext,
              &paintmode_0_2);
        }
        if (paintmode_0_2 != OPVP_paintModeTransparent) {
            if (apiEntry_0_2->SetROP != NULL) {
                apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_S);
            }
        }
        else {
            if (apiEntry_0_2->SetROP != NULL) {
                apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_OR);
            }
        }
        depth = 1;
    } else {
        if (apiEntry_0_2->SetROP != NULL) {
            apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_S);
        }
        depth = colorDepth_0_2[colorSpace];
    }

    OPVP_I2FIX(0,rect.p0.x);
    OPVP_I2FIX(0,rect.p0.y);
    OPVP_I2FIX(destinationWidth,rect.p1.x);
    OPVP_I2FIX(destinationHeight,rect.p1.y);
    if (imageFormat >= sizeof(iformat_1_0_to_0_2)/sizeof(OPVP_ImageFormat)) {
        /* illegal image format */
        *ErrorNo = OPVP_PARAMERROR_0_2;
        return -1;
    }
    iformat_0_2 = iformat_1_0_to_0_2[imageFormat];
    r = apiEntry_0_2->StartDrawImage(printerContext,
            sourceWidth,sourceHeight,
            depth,iformat_0_2,rect);

    return r;
}

static opvp_result_t
EndDrawImageWrapper(opvp_dc_t printerContext)
{
    int r;

    r = apiEntry_0_2->EndDrawImage(printerContext);

    /* make sure rop is pattern copy */
    if (apiEntry_0_2->SetROP != NULL) {
        apiEntry_0_2->SetROP(printerContext,OPVP_0_2_ROP_P);
    }

    return r;
}

static opvp_result_t
QueryDeviceCapabilityWrapper(
    opvp_dc_t printerContext,
    opvp_queryinfoflags_t queryflag,
    opvp_int_t *buflen,
    opvp_char_t *infoBuf)
{
    return apiEntry_0_2->QueryDeviceCapability(printerContext,queryflag,
      *buflen,(char *)infoBuf);
}

static opvp_result_t
QueryDeviceInfoWrapper(
    opvp_dc_t printerContext,
    opvp_queryinfoflags_t queryflag,
    opvp_int_t *buflen,
    opvp_char_t *infoBuf)
{
    if (queryflag & OPVP_QF_MEDIACOPY) {
        *ErrorNo = OPVP_NOTSUPPORTED;
        return -1;
    }
    if (queryflag & OPVP_QF_PRINTREGION) {
        queryflag &= ~OPVP_QF_PRINTREGION;
        queryflag |= 0x0020000;
    }
    return apiEntry_0_2->QueryDeviceInfo(printerContext,queryflag,
      *buflen,(char *)infoBuf);
}

static opvp_result_t
SetLineDashWrapper(opvp_dc_t printerContext, opvp_int_t num,
    const opvp_fix_t *pdash)
{
    return apiEntry_0_2->SetLineDash(printerContext,
      /* remove const */ (OPVP_Fix *)pdash,num);
}

static opvp_result_t
GetLineDashWrapper(opvp_dc_t printerContext, opvp_int_t *pnum,
    opvp_fix_t *pdash)
{
    return apiEntry_0_2->GetLineDash(printerContext,
      pdash,pnum);
}

static opvp_dc_t
OpenPrinterWrapper(
    opvp_int_t outputFD,
    const opvp_char_t *printerModel,
    const opvp_int_t apiVersion[2],
    opvp_api_procs_t **apiProcs)
{
    opvp_dc_t dc = -1;

    if (OpenPrinter != NULL) {
        dc = (*OpenPrinter)(outputFD,printerModel,apiVersion,apiProcs);
    } else {
        /* try version 0.2 */

        if (OpenPrinter_0_2 != NULL) {
            static opvp_api_procs_t tEntry;
            int nApiEntry;

            dc = (*OpenPrinter_0_2)(outputFD,
                    /* remove const */
                    (char *)printerModel,
                    &nApiEntry,&apiEntry_0_2);
            /* setting functions */
            tEntry.opvpClosePrinter
                    = apiEntry_0_2->ClosePrinter;
            tEntry.opvpStartJob
                    = (opvp_result_t (*)(opvp_int_t,
                       const opvp_char_t*))
                       apiEntry_0_2->StartJob;
            tEntry.opvpEndJob = apiEntry_0_2->EndJob;
            tEntry.opvpAbortJob = NULL;
            tEntry.opvpStartDoc
                    = (opvp_result_t (*)(opvp_dc_t,
                       const opvp_char_t*))
                       apiEntry_0_2->StartDoc;
            tEntry.opvpEndDoc = apiEntry_0_2->EndDoc;
            if (apiEntry_0_2->StartPage != NULL) {
                tEntry.opvpStartPage = StartPageWrapper;
            } else {
                tEntry.opvpStartPage = NULL;
            }
            tEntry.opvpEndPage = apiEntry_0_2->EndPage;

            if (apiEntry_0_2->QueryDeviceCapability != NULL) {
                tEntry.opvpQueryDeviceCapability
                  = QueryDeviceCapabilityWrapper;
            } else {
                tEntry.opvpQueryDeviceCapability = NULL;
            }

            if (apiEntry_0_2->QueryDeviceInfo != NULL) {
                tEntry.opvpQueryDeviceInfo = QueryDeviceInfoWrapper;
            } else {
                tEntry.opvpQueryDeviceInfo = NULL;
            }

            tEntry.opvpResetCTM = apiEntry_0_2->ResetCTM;
            tEntry.opvpSetCTM = (opvp_result_t (*)(opvp_dc_t,
                       const opvp_ctm_t*))
                       apiEntry_0_2->SetCTM;
            tEntry.opvpGetCTM = (opvp_result_t (*)(opvp_dc_t,opvp_ctm_t*))
                       apiEntry_0_2->GetCTM;
            if (apiEntry_0_2->InitGS != NULL) {
                tEntry.opvpInitGS = InitGSWrapper;
            } else {
                tEntry.opvpInitGS = NULL;
            }
            tEntry.opvpSaveGS = apiEntry_0_2->SaveGS;
            tEntry.opvpRestoreGS = apiEntry_0_2->RestoreGS;
            if (apiEntry_0_2->QueryColorSpace != NULL) {
                tEntry.opvpQueryColorSpace = QueryColorSpaceWrapper;
            } else {
                tEntry.opvpQueryColorSpace = NULL;
            }
            if (apiEntry_0_2->SetColorSpace != NULL) {
                tEntry.opvpSetColorSpace = SetColorSpaceWrapper;
            } else {
                tEntry.opvpSetColorSpace = NULL;
            }
            if (apiEntry_0_2->GetColorSpace != NULL) {
                tEntry.opvpGetColorSpace = GetColorSpaceWrapper;
            } else {
                tEntry.opvpGetColorSpace = NULL;
            }
            tEntry.opvpSetFillMode
                    = (opvp_result_t (*)(opvp_dc_t,opvp_fillmode_t))
                       apiEntry_0_2->SetFillMode;
            tEntry.opvpGetFillMode
                    = (opvp_result_t (*)(opvp_dc_t,opvp_fillmode_t*))
                       apiEntry_0_2->GetFillMode;
            tEntry.opvpSetAlphaConstant = apiEntry_0_2->SetAlphaConstant;
            tEntry.opvpGetAlphaConstant = apiEntry_0_2->GetAlphaConstant;
            tEntry.opvpSetLineWidth = apiEntry_0_2->SetLineWidth;
            tEntry.opvpGetLineWidth = apiEntry_0_2->GetLineWidth;
            if (apiEntry_0_2->SetLineDash != NULL) {
                tEntry.opvpSetLineDash = SetLineDashWrapper;
            } else {
                tEntry.opvpSetLineDash = NULL;
            }
            if (apiEntry_0_2->GetLineDash != NULL) {
                tEntry.opvpGetLineDash = GetLineDashWrapper;
            } else {
                tEntry.opvpGetLineDash = NULL;
            }
            tEntry.opvpSetLineDashOffset
                    = apiEntry_0_2->SetLineDashOffset;
            tEntry.opvpGetLineDashOffset
                    = apiEntry_0_2->GetLineDashOffset;
            tEntry.opvpSetLineStyle
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linestyle_t))
                       apiEntry_0_2->SetLineStyle;
            tEntry.opvpGetLineStyle
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linestyle_t*))
                       apiEntry_0_2->GetLineStyle;
            tEntry.opvpSetLineCap
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linecap_t))
                       apiEntry_0_2->SetLineCap;
            tEntry.opvpGetLineCap
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linecap_t*))
                       apiEntry_0_2->GetLineCap;
            tEntry.opvpSetLineJoin
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linejoin_t))
                       apiEntry_0_2->SetLineJoin;
            tEntry.opvpGetLineJoin
                    = (opvp_result_t (*)(opvp_dc_t,opvp_linejoin_t*))
                       apiEntry_0_2->GetLineJoin;
            tEntry.opvpSetMiterLimit = apiEntry_0_2->SetMiterLimit;
            tEntry.opvpGetMiterLimit = apiEntry_0_2->GetMiterLimit;
            tEntry.opvpSetPaintMode
                    = (opvp_result_t (*)(opvp_dc_t,opvp_paintmode_t))
                       apiEntry_0_2->SetPaintMode;
            tEntry.opvpGetPaintMode
                    = (opvp_result_t (*)(opvp_dc_t,opvp_paintmode_t*))
                       apiEntry_0_2->GetPaintMode;
            if (apiEntry_0_2->SetStrokeColor != NULL) {
                tEntry.opvpSetStrokeColor = SetStrokeColorWrapper;
            } else {
                tEntry.opvpSetStrokeColor = NULL;
            }
            if (apiEntry_0_2->SetFillColor != NULL) {
                tEntry.opvpSetFillColor = SetFillColorWrapper;
            } else {
                tEntry.opvpSetFillColor = NULL;
            }
            if (apiEntry_0_2->SetBgColor != NULL) {
                tEntry.opvpSetBgColor = SetBgColorWrapper;
            } else {
                tEntry.opvpSetBgColor = NULL;
            }
            tEntry.opvpNewPath = apiEntry_0_2->NewPath;
            tEntry.opvpEndPath = apiEntry_0_2->EndPath;
            tEntry.opvpStrokePath = apiEntry_0_2->StrokePath;
            tEntry.opvpFillPath = apiEntry_0_2->FillPath;
            tEntry.opvpStrokeFillPath = apiEntry_0_2->StrokeFillPath;
            tEntry.opvpSetClipPath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_cliprule_t))
                       apiEntry_0_2->SetClipPath;
            tEntry.opvpResetClipPath = apiEntry_0_2->ResetClipPath;
            tEntry.opvpSetCurrentPoint = apiEntry_0_2->SetCurrentPoint;
            tEntry.opvpLinePath
                    = (opvp_result_t (*)(opvp_dc_t,
                       opvp_pathmode_t,opvp_int_t,
                       const opvp_point_t*))
                       apiEntry_0_2->LinePath;
            tEntry.opvpPolygonPath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_int_t*,
                       const opvp_point_t*))
                       apiEntry_0_2->PolygonPath;
            tEntry.opvpRectanglePath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_rectangle_t*))
                       apiEntry_0_2->RectanglePath;
            tEntry.opvpRoundRectanglePath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_roundrectangle_t*))
                       apiEntry_0_2->RoundRectanglePath;
            tEntry.opvpBezierPath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_point_t*))
                       apiEntry_0_2->BezierPath;
            tEntry.opvpArcPath
                    = (opvp_result_t (*)(opvp_dc_t,opvp_arcmode_t,
                       opvp_arcdir_t,opvp_fix_t,opvp_fix_t,opvp_fix_t,
                       opvp_fix_t,opvp_fix_t,opvp_fix_t,opvp_fix_t,
                       opvp_fix_t))apiEntry_0_2->ArcPath;
            if (apiEntry_0_2->DrawImage != NULL) {
                tEntry.opvpDrawImage = DrawImageWrapper;
            } else {
                tEntry.opvpDrawImage = NULL;
            }
            if (apiEntry_0_2->StartDrawImage != NULL) {
                tEntry.opvpStartDrawImage = StartDrawImageWrapper;
            } else {
                tEntry.opvpStartDrawImage = NULL;
            }
            tEntry.opvpTransferDrawImage =
               (opvp_result_t (*)(opvp_dc_t,opvp_int_t,const void*))
               apiEntry_0_2->TransferDrawImage;
            if (apiEntry_0_2->EndDrawImage != NULL) {
                tEntry.opvpEndDrawImage = EndDrawImageWrapper;
            } else {
                tEntry.opvpEndDrawImage = NULL;
            }
            tEntry.opvpStartScanline = apiEntry_0_2->StartScanline;
            tEntry.opvpScanline
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_int_t*))
                       apiEntry_0_2->Scanline;
            tEntry.opvpEndScanline = apiEntry_0_2->EndScanline;
            tEntry.opvpStartRaster = apiEntry_0_2->StartRaster;
            tEntry.opvpTransferRasterData
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const opvp_byte_t*))
                       apiEntry_0_2->TransferRasterData;
            tEntry.opvpSkipRaster = apiEntry_0_2->SkipRaster;
            tEntry.opvpEndRaster = apiEntry_0_2->EndRaster;
            tEntry.opvpStartStream = apiEntry_0_2->StartStream;
            tEntry.opvpTransferStreamData
                    = (opvp_result_t (*)(opvp_dc_t,opvp_int_t,
                       const void *))
                       apiEntry_0_2->TransferStreamData;
            tEntry.opvpEndStream = apiEntry_0_2->EndStream;

            *apiProcs = &tEntry;

            GetLastError = GetLastError_0_2;
        }
    }
    return dc;
}

/* for image */
static  const
gx_image_enum_procs_t opvp_image_enum_procs =
{
    opvp_image_plane_data,
    opvp_image_end_image
};
typedef enum _FastImageSupportMode {
    FastImageDisable,
    FastImageNoCTM,
    FastImageNoRotate,
    FastImageRightAngle,
    FastImageReverseAngle,
    FastImageAll
} FastImageSupportMode;

static char *fastImage = NULL;
static FastImageSupportMode FastImageMode = FastImageDisable;
static bool begin_image = false;
static bool change_paint_mode = false;
static bool change_cspace = false;
static gs_color_space_index color_index = 0;
static gs_color_space_index base_color_index = 0;
static byte palette[3*256];
static float imageDecode[GS_IMAGE_MAX_COMPONENTS * 2];
static bool reverse_image = false;

/* added for image gamma correction */
typedef struct bbox_image_enum_s {
    gx_image_enum_common;
/*  gs_memory_t *memory; */
    gs_matrix matrix; /* map from image space to device dpace */
    const gx_clip_path *pcpath;
    gx_image_enum_common_t *target_info;
    bool params_are_const;
    int x0, x1;
    int y, height;
} bbox_image_enum;

/* The following is already defined in stdpre.h */
/*#define       min(a, b) (((a) < (b))? (a) : (b))*/

/* ----- Utilities ----- */

/* initialize Graphic State */
/* No defaults in OPVP 1.0 */
static int
InitGS(void)
{
    if (apiEntry->opvpInitGS != NULL) {
        if (apiEntry->opvpInitGS(printerContext) != OPVP_OK) {
            return -1;
        }
    }
    if (apiEntry->opvpSetColorSpace != NULL) {
        if (apiEntry->opvpSetColorSpace(printerContext,colorSpace)
           != OPVP_OK) {
            return -1;
        }
    }
    if (apiEntry->opvpSetPaintMode != NULL) {
        if (apiEntry->opvpSetPaintMode(printerContext,
            OPVP_PAINTMODE_TRANSPARENT) != OPVP_OK) {
            return -1;
        }
    }
    if (apiEntry->opvpSetAlphaConstant != NULL) {
        if (apiEntry->opvpSetAlphaConstant(printerContext,1.0)
           != OPVP_OK) {
            return -1;
        }
    }

    /* other properties are set by GhostScript */
    return 0;
}

static  int
opvp_startpage(gx_device *dev)
{
    int ecode = 0;
    opvp_result_t r = -1;
    static char *page_info = NULL;

    /* page info */
    page_info = opvp_alloc_string(&page_info, OPVP_INFO_PREFIX);
    page_info = opvp_cat_string(&page_info, opvp_gen_page_info(dev));

    /* call StartPage */
    if (printerContext != -1) {
        if (apiEntry->opvpStartPage)
            r = apiEntry->opvpStartPage(printerContext,
                       (opvp_char_t *)opvp_to_utf8(page_info));
        if (r != OPVP_OK) {
            ecode = -1;
        } else {
            ecode = InitGS();
        }
    }

    return ecode;
}

static  int
opvp_endpage(void)
{
    int ecode = 0;
    opvp_result_t r = -1;

    /* call EndPage */
    if (printerContext != -1) {
        if (apiEntry->opvpEndPage)
            r = apiEntry->opvpEndPage(printerContext);
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    return ecode;
}

static  char *
opvp_alloc_string(char **destin, const char *source)
{
    if (!destin) return NULL;

    if (*destin) {
        if (source) {
            *destin = realloc(*destin, strlen(source)+1);
        } else {
            free(*destin);
            *destin = NULL;
        }
    } else {
        if (source) {
            *destin = malloc(strlen(source)+1);
        }
    }
    if (*destin && source) {
        if (*destin != source) {
            strcpy(*destin, source);
        }
    }

    return *destin;
}

static  char *
opvp_cat_string(char **destin, const char *string)
{
    if (!destin) return NULL;
    if (!(*destin)) return opvp_alloc_string(destin, string);

    if (string) {
        *destin = realloc(*destin, strlen(*destin) +strlen(string)+1);
        strcat(*destin, string);
    }

    return *destin;
}

static  char *
opvp_adjust_num_string(char *num_string)
{
    char *pp;
    char *lp;

    if (!num_string) return NULL;

    if ((pp = strrchr(num_string, '.'))) {
        for (lp = &(num_string[strlen(num_string)-1]); lp > pp; lp--) {
            if (*lp == '0') {
                *lp = '\0';
            } else {
                break;
            }
        }
        if (lp == pp) *lp = '\0';
    }

    return num_string;
}

static  char **
opvp_gen_dynamic_lib_name(void)
{
    static char *buff[5] = {NULL,NULL,NULL,NULL,NULL};
    char tbuff[OPVP_BUFF_SIZE];

    if (!vectorDriver) {
        return NULL;
    }

    memset((void*)tbuff, 0, OPVP_BUFF_SIZE);
    strncpy(tbuff, vectorDriver, OPVP_BUFF_SIZE - 1);
    opvp_alloc_string(&(buff[0]), tbuff);

    memset((void*)tbuff, 0, OPVP_BUFF_SIZE);
    strncpy(tbuff, vectorDriver, OPVP_BUFF_SIZE - 4);
    strcat(tbuff, ".so");
    opvp_alloc_string(&(buff[1]), tbuff);

    memset((void*)tbuff, 0, OPVP_BUFF_SIZE);
    strncpy(tbuff, vectorDriver, OPVP_BUFF_SIZE - 5);
    strcat(tbuff, ".dll");
    opvp_alloc_string(&(buff[2]), tbuff);

    memset((void*)tbuff, 0, OPVP_BUFF_SIZE);
    strcpy(tbuff, "lib");
    strncat(tbuff, vectorDriver, OPVP_BUFF_SIZE - 7);
    strcat(tbuff, ".so");
    opvp_alloc_string(&(buff[3]), tbuff);

    buff[4] = NULL;

    return buff;
}

static  char *
opvp_to_utf8(char *string)
{
    char *locale;
    iconv_t cd;
    char *buff = NULL;
    size_t ib, ob;
    int  complete = false;
    char *ibuff, *obuff;
    char *ostring = NULL;

    if (string) {
        ib = strlen(string);
        if (ib > 0) {
            ob = ib * 4;
            buff = malloc(ob+1);
            setlocale(LC_CTYPE, "");
#ifdef CODESET
            locale = nl_langinfo(CODESET);
#else
            locale = "UTF-8";
#endif /* CODESET */
            if (locale) {
                if (strcmp(locale, "C") && buff) {
                    if ((cd = iconv_open("UTF-8", locale)) != (iconv_t)-1) {
                        ibuff = string;
                        obuff = buff;
                        if (iconv(cd, &ibuff, &ib, &obuff, &ob) != -1) {
                            *obuff = 0;
                            complete = true;
                        }
                        iconv_close(cd);
                    }
                }
            }
        }
    }

    if (complete) {
        ostring = opvp_alloc_string(&ostring, buff);
    } else {
        ostring = string;
    }

    if (buff) free(buff);
    return ostring;
}

static float
opvp_fabsf(float f)
{
    return (float)fabs((double)f);
}

static  int
opvp_get_papertable_index(gx_device *pdev)
{
    int i;
    float width, height;
    bool landscape;
    float paper_w, paper_h;
    float prev = -1;
    int paper = -1;
    int candidate = -1;
    int smaller = -1;
    int larger  = -1;
    int s_candi = -1;
    int l_candi = -1;
    float h_delta = TOLERANCE;
    float sw_delta = TOLERANCE;
    float sh_delta = TOLERANCE;
    float lw_delta = TOLERANCE;
    float lh_delta = TOLERANCE;
    bool match = false;
    float f;

    /* portrait or landscape */
    landscape = (pdev->MediaSize[0] < pdev->MediaSize[1] ? false : true);

    /* paper size */
    width  = (landscape ? pdev->MediaSize[1] : pdev->MediaSize[0]);
    height = (landscape ? pdev->MediaSize[0] : pdev->MediaSize[1]);

    for (i=0; paperTable[i].name != NULL; i++) {
        paper_w = paperTable[i].width;
        paper_h = paperTable[i].height;
        if (width == paper_w) {
            if (height == paper_h) {
                paper = i;
                match = true;
                break;
            } else if ((f = opvp_fabsf(height - paper_h)) < TOLERANCE) {
                if (f < h_delta) {
                    h_delta = f;
                    candidate = i;
                }
            }
        } else if (candidate != -1) {
            paper = candidate;
            match = true;
            break;
        } else if (prev != paper_w) {
            prev = paper_w;
            if (paper_w < width) {
                if ((f = opvp_fabsf(width - paper_w)) < TOLERANCE) {
                    if (f < sw_delta) {
                        sw_delta = f;
                        smaller  = i;
                    }
                }
            } else {
                if ((f = opvp_fabsf(width - paper_w)) < TOLERANCE) {
                    if (f < lw_delta) {
                        lw_delta = f;
                        larger   = i;
                    }
                }
            }
        }
    }
    if (!match) {
        paper = i;
        if (smaller != -1) {
            paper_w = paperTable[smaller].width;
            for (i = smaller; paperTable[i].width == paper_w; i++) {
                paper_h = paperTable[i].height;
                if (height == paper_h) {
                    sh_delta = 0;
                    s_candi  = i;
                    break;
                } else if ((f = opvp_fabsf(height - paper_h)) < TOLERANCE) {
                    if (f < sh_delta) {
                        sh_delta = f;
                        s_candi  = i;
                    }
                }
            }
        }
        if (larger != -1) {
            paper_w = paperTable[larger].width;
            for (i = larger; paperTable[i].width == paper_w; i++) {
                paper_h = paperTable[i].height;
                if (height == paper_h) {
                    lh_delta = 0;
                    l_candi  = i;
                    break;
                } else if ((f = opvp_fabsf(height - paper_h)) < TOLERANCE) {
                    if (f < lh_delta) {
                        lh_delta = f;
                        l_candi  = i;
                    }
                }
            }
        }
        if (s_candi != -1) {
            if (l_candi != -1) {
                if ((sw_delta + sh_delta)
                  < (lw_delta + lh_delta)) {
                        paper = s_candi;
                } else {
                        paper = l_candi;
                }
            } else {
                paper = s_candi;
            }
        } else {
            if (l_candi != -1) {
                paper = l_candi;
            }
        }
    }

    return paper;
}

static  char *
opvp_get_sizestring(float width, float height)
{
    char nbuff[OPVP_BUFF_SIZE];
    char nbuff1[OPVP_BUFF_SIZE / 2];
    char nbuff2[OPVP_BUFF_SIZE / 2];
    static char *buff = NULL;

    memset((void*)nbuff, 0, OPVP_BUFF_SIZE);
    memset((void*)nbuff1, 0, OPVP_BUFF_SIZE / 2);
    memset((void*)nbuff2, 0, OPVP_BUFF_SIZE / 2);

    snprintf(nbuff1, OPVP_BUFF_SIZE / 2 - 1, "%.3f", width);
    snprintf(nbuff2, OPVP_BUFF_SIZE / 2 - 1, "%.3f", height);
    snprintf(nbuff, OPVP_BUFF_SIZE - 1, "%sx%s",
                opvp_adjust_num_string(nbuff1),
                opvp_adjust_num_string(nbuff2));

    return opvp_alloc_string(&buff, nbuff);
}

static  char *
opvp_get_mediasize(gx_device *pdev)
{
    int i;
    char wbuff[OPVP_BUFF_SIZE];
    static char *buff = NULL;
    const char *region;
    const char *name;
    float width;
    float height;
    const char *unit;
    bool landscape;

    i = opvp_get_papertable_index(pdev);

    if (paperTable[i].name) {
        region = paperTable[i].region;
        name   = paperTable[i].name;
        width  = paperTable[i].width  / PS_DPI;
        height = paperTable[i].height / PS_DPI;
        if((strcmp(region, "na"  ) == 0) ||
           (strcmp(region, "asme") == 0) ||
           (strcmp(region, "roc" ) == 0) ||
           (strcmp(region, "oe"  ) == 0)) {
            unit    = "in";
        } else {
            width  *= MMPI;
            height *= MMPI;
            unit    = "mm";
        }
    } else {
        landscape = (pdev->MediaSize[0] < pdev->MediaSize[1] ?
                     false : true);
        region = "custom";
        name   = "opvp";
        width  = (landscape ? pdev->MediaSize[1] : pdev->MediaSize[0])
               / PS_DPI;
        height = (landscape ? pdev->MediaSize[0] : pdev->MediaSize[1])
               / PS_DPI;
        unit   = "in";
    }
    memset((void*)wbuff, 0, OPVP_BUFF_SIZE);
    snprintf(wbuff, OPVP_BUFF_SIZE - 1, "%s_%s_%s%s", region, name,
                                 opvp_get_sizestring(width, height),
                                 unit);
    buff = opvp_alloc_string(&buff, wbuff);

    return buff;
}

static  char *
opvp_gen_page_info(gx_device *dev)
{
    static char *buff = NULL;
    int num_copies = 1;
    bool landscape;
    char tbuff[OPVP_BUFF_SIZE];

    /* copies */
    if (!inkjet) {
        if (dev->IgnoreNumCopies) {
            num_copies = 1;
        } else if (dev->NumCopies_set > 0) {
            num_copies = dev->NumCopies;
        }
    }

    landscape = (dev->MediaSize[0] < dev->MediaSize[1] ? false
                                                       : true);
    memset((void*)tbuff, 0, OPVP_BUFF_SIZE);
    snprintf(tbuff, OPVP_BUFF_SIZE - 1,
       "MediaCopy=%d;DeviceResolution=deviceResolution_%s;"
       "MediaPageRotation=%s;MediaSize=%s",
       num_copies,
       opvp_get_sizestring(dev->x_pixels_per_inch, dev->y_pixels_per_inch),
       (landscape ? "landscape" : "portrait"),
       opvp_get_mediasize(dev));

    opvp_alloc_string(&buff, tbuff);

    return buff;
}

static  char *
opvp_gen_doc_info(gx_device *dev)
{
    return opvp_gen_page_info(dev);
}

static  char *
opvp_gen_job_info(gx_device *dev)
{
    return opvp_gen_doc_info(dev);
}

static  int
opvp_set_brush_color(gx_device_opvp *pdev, gx_color_index color,
    opvp_brush_t *brush)
{
    int code;
    int ecode = 0;
    gx_color_value rgb[3];

    code = opvp_map_color_rgb((gx_device *)pdev, color, rgb);
    if (code) {
        ecode = -1;
    } else {
#if ENABLE_SIMPLE_MODE
        brush->colorSpace = colorSpace;
#else
        opvp_result_t           r = -1;
        /* call GetColorSpace */
        if (apiEntry->opvpGetColorSpace) {
            r = apiEntry->opvpGetColorSpace(printerContext,
                                   &(brush->colorSpace));
        }
        if (r != OPVP_OK) {
            brush->colorSpace = OPVP_CSPACE_DEVICEKRGB;
        }
#endif
        brush->pbrush = NULL;
        brush->xorg = brush->yorg = 0;
        brush->color[3] = (color == gx_no_color_index ? -1 : 0);
        brush->color[2] = rgb[0];
        brush->color[1] = rgb[1];
        brush->color[0] = rgb[2];
    }

    return ecode;
}

static  int
opvp_draw_image(
    gx_device_opvp *pdev,
    int depth,
    int sw,
    int sh,
    int dw,
    int dh,
    int raster,
    int mask,
    const byte *data)
{
    opvp_result_t               r = -1;
    int                 ecode = 0;
    int                 count;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* image size */
    count = raster * sh;

    /* call DrawImage */
    if (apiEntry->opvpDrawImage) {
        r = apiEntry->opvpDrawImage(printerContext,
               sw,sh,
               raster,
               mask ? OPVP_IFORMAT_MASK : OPVP_IFORMAT_RAW,
               dw,dh,
               /* discard 'const' qualifier */
               (void *)data);
    }
    if (r != OPVP_OK) {
        /* call StartDrawImage */
        if (apiEntry->opvpStartDrawImage) {
            r = apiEntry->opvpStartDrawImage(printerContext,
                    sw,sh,
                    raster,
                    mask ? OPVP_IFORMAT_MASK : OPVP_IFORMAT_RAW,
                    dw,dh);
        }
        if (r == OPVP_OK) {
            /* call TansferDrawImage */
            if (apiEntry->opvpTransferDrawImage) {
                r = apiEntry->opvpTransferDrawImage(
                       printerContext,
                       count,
                        /* discard 'const' qualifier */
                       (void *)data);
            }
            if (r != OPVP_OK) ecode = -1;

            /* call EndDrawImage */
            if (apiEntry->opvpEndDrawImage) {
                apiEntry->opvpEndDrawImage(printerContext);
            }
        } else {
            ecode = 0;  /* continue... */
        }
    }

    return ecode;
}

/* ----- load/unload vector driver ----- */

/*
 * load vector-driver
 */
static  int
opvp_load_vector_driver(void)
{
    char **list = NULL;
    int i;
    void *h;

    if (handle) {
        opvp_unload_vector_driver();
    }

    if (vectorDriver) {
        list = opvp_gen_dynamic_lib_name();
    }

    if (list) {
        i = 0;
        while (list[i]) {
            if ((h = dlopen(list[i],RTLD_NOW))) {
                OpenPrinter = dlsym(h,"opvpOpenPrinter");
                ErrorNo = dlsym(h,"opvpErrorNo");
                if (OpenPrinter && ErrorNo) {
                    handle = h;
                    break;
                }
                OpenPrinter = NULL;
                ErrorNo = NULL;
                /* try version 0.2 driver */
                OpenPrinter_0_2 = dlsym(h,"OpenPrinter");
                ErrorNo = dlsym(h,"errorno");
                if (OpenPrinter_0_2 && ErrorNo) {
                    handle = h;
                    break;
                }
                OpenPrinter_0_2 = NULL;
                ErrorNo = NULL;
            }
            i++;
        }
    }

    if (handle) {
        return 0;
    } else {
        return -1;
    }
}

/*
 * unload vector-driver
 */
static  int
opvp_unload_vector_driver(void)
{
    if (handle) {
        dlclose(handle);
        handle = NULL;
        OpenPrinter = NULL;
        ErrorNo = NULL;
    }
    return 0;
}

/*
 * prepare open
 */
static  int
prepare_open(gx_device *dev)
{
    int ecode = 0;
    int code;
    opvp_api_procs_t *api_entry;
    int dumFD = -1;
    opvp_dc_t dumContext = -1;
    opvp_cspace_t cspace = OPVP_CSPACE_STANDARDRGB;

    /* open dummy device */
    code = open("/dev/null", O_RDWR);
    if (code < 0) ecode = code;
    else dumFD = code;

    /* load vector driver */
    if (!ecode) {
        if ((code = opvp_load_vector_driver())) {
            ecode = code;
        }
    }

    /* prepare array of function pointer for PDAPI */
    if (!ecode) {
        if (!apiEntry) {
            if (!(apiEntry = calloc(sizeof(opvp_api_procs_t), 1))) {
                ecode = -1;
            }
        } else {
            memset(apiEntry, 0, sizeof(opvp_api_procs_t));
        }
    }

    /* call opvpOpenPrinter as dummy */
    if (!ecode) {
        opvp_dc_t dc;
        opvp_int_t apiVersion[2];

        /* require version 1.0 */
        apiVersion[0] = 1;
        apiVersion[1] = 0;
        dc = OpenPrinterWrapper(dumFD, (opvp_char_t *)printerModel,
          apiVersion,&api_entry);
        if (dc == -1) {
            ecode = -1;
        } else {
            dumContext = dc;
        }
    }

    /* set apiEntry */
    if (!ecode) {
        nApiEntry = sizeof(opvp_api_procs_t)/sizeof(void *);
        memcpy(apiEntry, api_entry, nApiEntry*sizeof(void *));
    } else {
        if (apiEntry) free(apiEntry);
        apiEntry = NULL;
    }

    /* check vector fucntion */
    if (apiEntry) {
        if (!inkjet) {
            if (!(apiEntry->opvpNewPath) ||
                !(apiEntry->opvpEndPath) ||
                !(apiEntry->opvpStrokePath) ||
                !(apiEntry->opvpSetCurrentPoint) ||
                !(apiEntry->opvpLinePath) ||
                !(apiEntry->opvpBezierPath)) {
                /* NOT avail vector drawing mode */
                vector = false;
            }
        }
        /* call GetColorSpace */
        if (apiEntry->opvpGetColorSpace) {
            (void)apiEntry->opvpGetColorSpace(dumContext, &cspace);
        }
        if (cspace == OPVP_CSPACE_BW) {
            /* mono-color */
            colorSpace = cspace;
            dev->color_info.num_components = 1;
            dev->color_info.depth = 1;
            dev->color_info.max_gray = 0;
            dev->color_info.max_color = 0;
            dev->color_info.dither_grays = 1;
            dev->color_info.dither_colors = 1;
        } else if (cspace == OPVP_CSPACE_DEVICEGRAY) {
            /* gray-scale */
            colorSpace = cspace;
            dev->color_info.num_components = 1;
            dev->color_info.depth = 8;
            dev->color_info.max_gray = 255;
            dev->color_info.max_color = 255;
            dev->color_info.dither_grays = 256;
            dev->color_info.dither_colors = 256;
        } else {
            /* rgb color */
            colorSpace = OPVP_CSPACE_STANDARDRGB;
            dev->color_info.num_components = 3;
            dev->color_info.depth = 24;
            dev->color_info.max_gray = 255;
            dev->color_info.max_color = 255;
            dev->color_info.dither_grays = 256;
            dev->color_info.dither_colors = 256;
        }
#if GS_VERSION_MAJOR >= 8
        dev->procs.get_color_mapping_procs = NULL;
        dev->procs.get_color_comp_index = NULL;
        gx_device_fill_in_procs(dev);
#endif
    }

    /* call Closerinter as dummy */
    if (dumContext != -1) {
        /* call ClosePrinter */
        if (apiEntry->opvpClosePrinter) {
            apiEntry->opvpClosePrinter(dumContext);
        }
        dumContext = -1;
    }

    /* close device for dummy */
    if (dumFD != -1) {
        close(dumFD);
        dumFD = -1;
    }

    /* un-load vector driver */
    opvp_unload_vector_driver();

    return ecode;
}

/* ----- driver procs ----- */
/*
 * open device
 */
static  int
opvp_open(gx_device *dev)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    gx_device_oprp *rdev = (gx_device_oprp *)dev;
    int ecode = 0;
    int code;
    opvp_result_t r = -1;
    opvp_dc_t dc;
    opvp_api_procs_t *api_entry;
    char *job_info = NULL;
    char *doc_info = NULL;
    char *tmp_info = NULL;
    float margin_width = 0;
    float margin_height = 0;
    float adj_margins[4];
    opvp_int_t apiVersion[2];

    /* prepare open : load and open as dummy */
    code = prepare_open(dev);
    if (code) {
        ecode = code;
        return ecode;
    }

    /* set margins */
    if (zoomAuto) {
        margin_width = (margins[0] + margins[2])
                     * dev->HWResolution[0];
        margin_height = (margins[1] + margins[3])
                      * dev->HWResolution[1];
        zoom[0] = (dev->width - margin_width) / dev->width;
        zoom[1] = (dev->height - margin_height) / dev->height;
        if (zoom[0] < zoom[1]) {
            zoom[1] = zoom[0];
        } else {
            zoom[0] = zoom[1];
        }
    }
    if (inkjet) {
        if ((margins[0] != 0) ||
            (margins[1] != 0) || (margins[3] != 0)) {
            shift[0] = margins[0] * dev->HWResolution[0];
            shift[1] = (margins[1] + margins[3])
                     * dev->HWResolution[1];
            zooming = true;
        }
        dev->width -= margins[2] * dev->HWResolution[0];
        dev->height -= margins[1] * dev->HWResolution[1];
    } else {
            if ((margins[0] != 0) || (margins[1] != 0)) {
                shift[0] = margins[0] * dev->HWResolution[0];
                shift[1] = margins[3] * dev->HWResolution[1];
                zooming = true;
            }
            adj_margins[0] = 0;
            adj_margins[3] = 0;
            adj_margins[1] = dev->height * zoom[1] / dev->HWResolution[1]
                            - (dev->MediaSize[1] / PS_DPI
                             - (margins[1] + margins[3]));
            if (adj_margins[1] < 0) adj_margins[0] = 0;
            adj_margins[2] = dev->width * zoom[0] / dev->HWResolution[0]
                            - (dev->MediaSize[0] / PS_DPI
                             - (margins[0] + margins[2]));
            if (adj_margins[2] < 0) adj_margins[2] = 0;
            gx_device_set_margins(dev, adj_margins, true);
    }
    if ((zoom[0] != 1) || (zoom[1] != 1)) zooming = true;

    /* open file for output device */
    if (!inkjet) {
        pdev->v_memory = gs_memory_stable(pdev->memory);
        /* open output stream */
        code = gdev_vector_open_file_options((gx_device_vector*)dev,
                   512,
                   (VECTOR_OPEN_FILE_SEQUENTIAL
                   |VECTOR_OPEN_FILE_BBOX
                   ));
        if (code < 0) {
            ecode = code;
            return ecode;
        }
        while (dev->child) {
            dev = dev->child;
        }
        rdev = (gx_device_oprp *)(dev);
        pdev = (gx_device_opvp *)(dev);
#if GS_VERSION_MAJOR >= 8
        if (pdev->bbox_device != NULL) {
            if (pdev->bbox_device->memory == NULL) {
                pdev->bbox_device->memory = gs_memory_stable(dev->memory);
            }
        }
#endif
        outputFD = fileno(pdev->file);
    } else {
        /* open printer device */
        code = gdev_prn_open(dev);
        if (code < 0) {
            return code;
        }
        while (dev->child) {
            dev = dev->child;
        }
        rdev = (gx_device_oprp *)(dev);
        pdev = (gx_device_opvp *)(dev);
        /* open output stream */
        code = gdev_prn_open_printer_seekable(dev, true, false);
        if (code < 0) {
            return code;
        }
        outputFD = fileno(rdev->file);
    }

    /* RE-load vector driver */
    if ((code = opvp_load_vector_driver())) {
        return code;
    }

    /* call opvpOpenPrinter */
    /* require version 1.0 */
    apiVersion[0] = 1;
    apiVersion[1] = 0;
    dc = OpenPrinterWrapper(outputFD,(opvp_char_t *)printerModel,
      apiVersion,&api_entry);
    if (!apiEntry) {
        if (!(apiEntry = calloc(sizeof(opvp_api_procs_t), 1))) {
            ecode = -1;
        }
    } else {
        memset(apiEntry, 0, sizeof(opvp_api_procs_t));
    }
    if (dc == -1) {
        ecode =  -1;
        if (apiEntry) free(apiEntry);
        apiEntry = NULL;
        opvp_unload_vector_driver();
        if (inkjet) gdev_prn_close(dev);
        else gdev_vector_close_file((gx_device_vector *)pdev);
        return ecode;
    }
    printerContext = dc;
    nApiEntry = sizeof(opvp_api_procs_t)/sizeof(void *);
    memcpy(apiEntry, api_entry, nApiEntry*sizeof(void *));

    /* initialize */
    if ((!ecode) && (!inkjet)) {
        pdev->vec_procs = &opvp_vector_procs;
        if (vector) gdev_vector_init((gx_device_vector *)pdev);
    }

    if (apiEntry->opvpQueryColorSpace) {
        int n = sizeof(cspace_available);
        int nn = n;
        opvp_cspace_t *p = malloc(n*sizeof(opvp_cspace_t));

        if ((r = apiEntry->opvpQueryColorSpace(printerContext,&nn,p))
             == OPVP_PARAMERROR && nn > n) {
            /* realloc buffer and retry */
            p = realloc(p,nn*sizeof(opvp_cspace_t));
            r = apiEntry->opvpQueryColorSpace(printerContext,&nn,p);
        }
        if (r == OPVP_OK) {
            int i;

            for (i = 0;i < nn;i++) {
                if ((unsigned int)p[i] < sizeof(cspace_available)) {
                    cspace_available[p[i]] = 1;
                }
            }
        }
        free(p);
    }
    /* start job */
    if (!ecode) {
        /* job info */
        if (jobInfo) {
            if (strlen(jobInfo) > 0) {
                job_info = opvp_alloc_string(&job_info,jobInfo);
            }
        }
        tmp_info = opvp_alloc_string(&tmp_info,opvp_gen_job_info(dev));
        if (tmp_info) {
            if (strlen(tmp_info) > 0) {
                if (job_info) {
                    if (strlen(job_info) > 0) {
                        opvp_cat_string(&job_info, ";");
                    }
                }
                job_info = opvp_cat_string(&job_info,OPVP_INFO_PREFIX);
                job_info = opvp_cat_string(&job_info,tmp_info);
            }
        }

        /* call StartJob */
        if (apiEntry->opvpStartJob) {
            r = apiEntry->opvpStartJob(printerContext,
              (opvp_char_t *)opvp_to_utf8(job_info));
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    /* start doc */
    if (!ecode) {
        /* doc info */
        if (docInfo) {
            if (strlen(docInfo) > 0) {
                doc_info = opvp_alloc_string(&doc_info,docInfo);
            }
        }
        tmp_info = opvp_alloc_string(&tmp_info, opvp_gen_doc_info(dev));
        if (tmp_info) {
            if (strlen(tmp_info) > 0) {
                if (doc_info) {
                    if (strlen(doc_info) > 0) {
                        opvp_cat_string(&doc_info, ";");
                    }
                }
                doc_info = opvp_cat_string(&doc_info,OPVP_INFO_PREFIX);
                doc_info = opvp_cat_string(&doc_info,tmp_info);
            }
        }

        /* call StartDoc */
        if (apiEntry->opvpStartDoc) {
            r = apiEntry->opvpStartDoc(printerContext,
              (opvp_char_t *)opvp_to_utf8(doc_info));
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    if (tmp_info) opvp_alloc_string(&tmp_info, NULL);
    if (doc_info) opvp_alloc_string(&doc_info, NULL);
    if (job_info) opvp_alloc_string(&job_info, NULL);

    return ecode;
}

/*
 * open device for inkjet
 */
static  int
oprp_open(gx_device *dev)
{
    /* set inkjet mode */
    vector = false;
    inkjet = true;

    /* matrix */
    dev->procs.get_initial_matrix = opvp_get_initial_matrix;
    return opvp_open(dev);
}

/*
 * get initial matrix
 */
static  void
opvp_get_initial_matrix(gx_device *dev, gs_matrix *pmat)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    opvp_ctm_t omat;

    gx_default_get_initial_matrix(dev,pmat);
    if (zooming) {
        /* gs matrix */
        pmat->xx *= zoom[0];
        pmat->xy *= zoom[1];
        pmat->yx *= zoom[0];
        pmat->yy *= zoom[1];
        pmat->tx = pmat->tx * zoom[0] + shift[0];
        pmat->ty = pmat->ty * zoom[1] + shift[1];
    }

    if (pdev->is_open) {
        /* call ResetCTM */
        if (apiEntry->opvpResetCTM) {
            apiEntry->opvpResetCTM(printerContext);
        } else {
            /* call SetCTM */
            omat.a = 1;
            omat.b = 0;
            omat.c = 0;
            omat.d = 1;
            omat.e = 0;
            omat.f = 0;
            if (apiEntry->opvpSetCTM) {
                apiEntry->opvpSetCTM(printerContext, &omat);
            }
        }
    }

    return;
}

/*
 * output page
 */
static  int
opvp_output_page(gx_device *dev, int num_copies, int flush)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    int ecode = 0;
    int code = -1;

    if (inkjet) return gdev_prn_output_page(dev, num_copies, flush);

#ifdef OPVP_IGNORE_BLANK_PAGE
    if (pdev->in_page) {
#else
    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;
#endif
        /* end page */
        code = opvp_endpage();
        if (code) ecode = code;

        pdev->in_page = false;
        beginPage = false;
#ifdef OPVP_IGNORE_BLANK_PAGE
    }
#endif

    if (vector) {
        gdev_vector_reset((gx_device_vector *)pdev);
    }

    code = gx_finish_output_page(dev, num_copies, flush);
    if (code) ecode = code;

    return ecode;
}

/*
 * print page
 */
static  int
oprp_print_page(gx_device_printer *pdev, FILE *prn_stream)
{
    int ecode = 0;
    int code = -1;
    opvp_result_t r = -1;
    int raster_size;
    int buff_size;
    byte *buff = NULL;
    int line;
    int scan_lines;
    byte *data;
    int rasterWidth;
    bool start_page = false;
    bool start_raster = false;
#if ENABLE_SKIP_RASTER
    int i;
    byte check;
#endif

    /* get raster/pixel size */
    raster_size = gx_device_raster((gx_device *)pdev, 0);
    buff_size = ((raster_size + 3) >> 2) << 2;
    scan_lines = dev_print_scan_lines(pdev);
    rasterWidth = pdev->width;

    /* allocate buffer */
    buff = (byte*)calloc(1, buff_size);
    if (!buff) return ecode = -1;

    /* start page */
    if (!ecode) {
        code = opvp_startpage((gx_device *)pdev);
        if (code) ecode = code;
        else start_page = true;
    }

    /* moveto origin */
    if (!ecode)
    opvp_moveto((gx_device_vector*)pdev, 0, 0, 0, 0, 0);

    /* call StartRaster */
    if (!ecode) {
        if (apiEntry->opvpStartRaster) {
            r = apiEntry->opvpStartRaster(printerContext,rasterWidth);
        }
        if (r != OPVP_OK) {
            ecode = r;
        } else {
            start_raster = true;
        }
    }

    /* line */
    for (line = 0; (line < scan_lines) && (!ecode); line++) {
        /* get raster data */
        if (!ecode) {
            code = gdev_prn_get_bits(pdev, line, buff, &data);
            if (code) {
                ecode = code;
                break;
            }
        }
#if ENABLE_SKIP_RASTER
        /* check support SkipRaster */
        if (apiEntry->opvpSkipRaster) {
            /* check all white */
            if (pdev->color_info.depth > 8) {
                for (check = 0xff, i = 0; i < raster_size; i++)
                {
                    check &= data[i];
                    if (check != 0xff) break;
                }
                /* if all white call SkipRaster */
                if (check == 0xff) {
                    r = apiEntry->opvpSkipRaster(printerContext, 1);
                    if (r == OPVP_OK) continue;
                }
            } else {
                for (check = 0, i = 0; i < raster_size; i++) {
                    check |= data[i];
                    if (check) break;
                }
                /* if all zero call SkipRaster */
                if (check) {
                    r = apiEntry->opvpSkipRaster(printerContext, 1);
                    if (r == OPVP_OK) continue;
                }
            }
        }
#endif
        /* call TransferRasterData */
        if (!ecode) {
            if (apiEntry->opvpTransferRasterData) {
                r = apiEntry->opvpTransferRasterData(printerContext,
                                                raster_size,
                                                data);
            }
            if (r != OPVP_OK) ecode = r;
        }
    }

    /* call EndRaster */
    if (start_raster) {
        if (apiEntry->opvpEndRaster) {
            r = apiEntry->opvpEndRaster(printerContext);
        }
        if (r != OPVP_OK) ecode = r;
        start_raster = false;
    }

    /* end page */
    if (start_page) {
        code = opvp_endpage();
        if (code) ecode = code;
        start_page = false;
    }

    /* free buffer */
    if (buff) {
        free(buff);
        buff = NULL;
    }

    return ecode;
}

/*
 * close device
 */
static  int
opvp_close(gx_device *dev)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    int ecode = 0;

    /* finalize */
    if (printerContext != -1) {
        /* call EndDoc */
        if (apiEntry->opvpEndDoc) {
            apiEntry->opvpEndDoc(printerContext);
        }

        /* call EndJob */
        if (apiEntry->opvpEndJob) {
            apiEntry->opvpEndJob(printerContext);
        }

        /* call ClosePrinter */
        if (apiEntry->opvpClosePrinter) {
            apiEntry->opvpClosePrinter(printerContext);
        }
        printerContext = -1;
    }

    /* unload vector driver */
    if (apiEntry) free(apiEntry);
    apiEntry = NULL;
    opvp_unload_vector_driver();

    if (inkjet) {
        /* close printer */
        gdev_prn_close(dev);
    } else {
        /* close output stream */
        gdev_vector_close_file((gx_device_vector *)pdev);
    }
    outputFD = -1;

    return ecode;
}

/*
 * map rgb color
 */
#if GS_VERSION_MAJOR >= 8
static  gx_color_index
opvp_map_rgb_color(gx_device *dev,
        const gx_color_value *prgb /* modified for gs 8.15 */)
#else
static  gx_color_index
opvp_map_rgb_color(gx_device *dev,
        gx_color_value r,
        gx_color_value g,
        gx_color_value b)
#endif
{
    opvp_cspace_t cs;
    uint c, m, y, k;

#if !(ENABLE_SIMPLE_MODE)
    gx_device_opvp *pdev;
    opvp_result_t r;
#endif

#if GS_VERSION_MAJOR >= 8
    gx_color_value r, g, b; /* added for gs 8.15 */
    r = prgb[0];
    g = prgb[1];
    b = prgb[2];
#endif

#if !(ENABLE_SIMPLE_MODE)
    pdev = (gx_device_opvp *)dev;
    r = -1;
#endif
    cs = OPVP_CSPACE_STANDARDRGB;

#if ENABLE_SIMPLE_MODE
    cs = colorSpace;
#else
    if (pdev->is_open) {
        /* call GetColorSpace */
        if (apiEntry->opvpGetColorSpace) {
            r = apiEntry->opvpGetColorSpace(printerContext, &cs);
        }
        if (r != OPVP_OK) {
            if (pdev->color_info.depth > 32) {
                    cs = OPVP_CSPACE_STANDARDRGB64;
            } else if (pdev->color_info.depth > 8 ) {
                    cs = OPVP_CSPACE_STANDARDRGB;
            } else if (pdev->color_info.depth > 1 ) {
                    cs = OPVP_CSPACE_DEVICEGRAY;
            } else {
                    cs = OPVP_CSPACE_BW;
            }
        }
    }
#endif

    switch (cs) {
    case OPVP_CSPACE_STANDARDRGB64:
        /* unsupported */
        if (sizeof(gx_color_index) >= 6) {
            return (long long)b
                 + ((long long)g << 16)
                 + ((long long)b << 32);
        } else {
            return gx_color_value_to_byte(b)
                 + ((uint)gx_color_value_to_byte(g) << 8)
                 + ((ulong)gx_color_value_to_byte(r) << 16);
        }
        break;
    case OPVP_CSPACE_DEVICECMYK:
    case OPVP_CSPACE_DEVICECMY:
        /* unsupported */
        c = gx_color_value_to_byte(~r);
        m = gx_color_value_to_byte(~g);
        y = gx_color_value_to_byte(~b);
        if (cs == OPVP_CSPACE_DEVICECMYK) {
            k = (c<m ? (c<y ? c : y) : (m<y ? m : y));
            c -= k;
            m -= k;
            y -= k;
        } else {
            k = 0;
        }
        return (k + (y << 8) + (m << 16) + (c << 24));
        break;
    case OPVP_CSPACE_DEVICEGRAY:
#if GS_VERSION_MAJOR >= 8
        {
            gx_color_value rgb[3];
            rgb[0] = rgb[1] = rgb[2] = r;
            return gx_default_gray_map_rgb_color(dev, rgb);
        }
#else
        return gx_default_gray_map_rgb_color(dev, r, g, b);
#endif
        break;
    case OPVP_CSPACE_BW :
#if GS_VERSION_MAJOR >= 8
        return gx_default_b_w_map_rgb_color(dev, prgb);
#else
        return gx_default_b_w_map_rgb_color(dev, r, g, b);
#endif
        break;
    case OPVP_CSPACE_STANDARDRGB:
    case OPVP_CSPACE_DEVICEKRGB:
    default:
#if GS_VERSION_MAJOR >= 8
        return gx_default_rgb_map_rgb_color(dev, prgb);
#else
        return gx_default_rgb_map_rgb_color(dev, r, g, b);
#endif
        break;
    }
}

/*
 * map color rgb
 */
static  int
opvp_map_color_rgb(gx_device *dev, gx_color_index color,
    gx_color_value prgb[3])
{
#if !(ENABLE_SIMPLE_MODE)
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    opvp_result_t r = -1;
#endif
    opvp_cspace_t cs = OPVP_CSPACE_STANDARDRGB;
    uint c, m, y, k;

#if ENABLE_SIMPLE_MODE
    cs = colorSpace;
#else
    /* call GetColorSpace */
    if (pdev->is_open) {
        if (apiEntry->opvpGetColorSpace) {
            r = apiEntry->opvpGetColorSpace(printerContext, &cs);
        }
        if (r != OPVP_OK) {
            if (pdev->color_info.depth > 32) {
                cs = OPVP_CSPACE_STANDARDRGB64;
            } else if (pdev->color_info.depth > 8 ) {
                cs = OPVP_CSPACE_STANDARDRGB;
            } else if (pdev->color_info.depth > 1 ) {
                cs = OPVP_CSPACE_DEVICEGRAY;
            } else {
                cs = OPVP_CSPACE_BW;
            }
        }
    }
#endif

    switch (cs) {
    case OPVP_CSPACE_STANDARDRGB64:
        /* unsupported */
        if (sizeof(gx_color_index) >= 6) {
            prgb[0] = ((long long)color >> 32) & 0xffff;
            prgb[1] = ((long long)color >> 16) & 0xffff;
            prgb[2] = color & 0xffff;
        } else {
            prgb[0] = gx_color_value_from_byte((color >> 16) & 0xff);
            prgb[1] = gx_color_value_from_byte((color >> 8) & 0xff);
            prgb[2] = gx_color_value_from_byte(color & 0xff);
        }
        break;
    case OPVP_CSPACE_DEVICECMYK:
    case OPVP_CSPACE_DEVICECMY:
        /* unsupported */
        c = gx_color_value_from_byte((color >> 24) & 0xff);
        m = gx_color_value_from_byte((color >> 16) & 0xff);
        y = gx_color_value_from_byte((color >> 8) & 0xff);
        if (cs == OPVP_CSPACE_DEVICECMYK) {
            k = gx_color_value_from_byte(color & 0xff);
            c += k; if (c > 255) c = 255;
            m += k; if (m > 255) m = 255;
            y += k; if (y > 255) y = 255;
        }
        prgb[0] = gx_color_value_from_byte(~c & 0xff);
        prgb[1] = gx_color_value_from_byte(~m & 0xff);
        prgb[2] = gx_color_value_from_byte(~y & 0xff);
        break;
    case OPVP_CSPACE_DEVICEGRAY:
        return gx_default_gray_map_color_rgb(dev, color, prgb);
        break;
    case OPVP_CSPACE_BW:
        return gx_default_b_w_map_color_rgb(dev, color, prgb);
        break;
    case OPVP_CSPACE_STANDARDRGB:
    case OPVP_CSPACE_DEVICEKRGB:
    default:
        return gx_default_rgb_map_color_rgb(dev, color, prgb);
        break;
    }

    return 0;
}

/*
 * fill rectangle
 */
static  int
opvp_fill_rectangle(
    gx_device *dev,
    int x,
    int y,
    int w,
    int h,
    gx_color_index color)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    byte data[8] = {0xC0, 0, 0, 0, 0xC0, 0, 0, 0};
    int code = -1;
    int ecode = 0;
    opvp_brush_t brush;
    opvp_point_t point;

    if (vector) {
        return gdev_vector_fill_rectangle( dev, x, y, w, h, color);
    }

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

#if !(ENABLE_SIMPLE_MODE)
    /* call SaveGS */
    if (apiEntry->opvpSaveGS) {
        apiEntry->opvpSaveGS(printerContext);
    }
#endif

    /* one-color */
    opvp_set_brush_color(pdev, color, &brush);

    /* call SetFillColor */
    if (apiEntry->opvpSetFillColor) {
        apiEntry->opvpSetFillColor(printerContext, &brush);
    }

    /* call SetCurrentPoint */
    OPVP_I2FIX(x, point.x);
    OPVP_I2FIX(y, point.y);
    if (apiEntry->opvpSetCurrentPoint) {
        apiEntry->opvpSetCurrentPoint(printerContext,point.x, point.y);
    }

    /* draw image */
    code = opvp_draw_image(pdev,
                           1,
                           2, 2,
                           w, h,
                           4,
                           0,
                           data);
    if (code) {
        ecode = code;
    }

    /* restore fill color */
    if (vectorFillColor) {
        /* call SetFillColor */
        if (apiEntry->opvpSetFillColor) {
            apiEntry->opvpSetFillColor(printerContext,vectorFillColor);
        }
    }

#if !(ENABLE_SIMPLE_MODE)
    /* call RestoreGS */
    if (apiEntry->opvpRestoreGS) {
        apiEntry->opvpRestoreGS(printerContext);
    }
#endif

    return ecode;
}

/*
 * copy mono
 */
static  int
opvp_copy_mono(
    gx_device *dev,
    const byte *data,
    int data_x,
    int raster,
    gx_bitmap_id id,
    int x,
    int y,
    int w,
    int h,
    gx_color_index zero,
    gx_color_index one)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    int code = -1;
    int ecode = 0;
    opvp_brush_t brush;
    opvp_point_t point;
    const byte *buff = data;
    byte *mybuf = NULL;
    int i, j;
    byte *d;
    const byte *s;
    int byte_offset = 0;
    int byte_length = raster;
    int bit_shift = 0;
    int adj_raster = raster;
    unsigned char bit_mask = 0xff;
    bool reverse = false;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* data offset */
    if (data_x) {
        byte_offset = data_x >> 3;
        bit_shift = data_x & 0x07;
        if (bit_shift) bit_mask <<= (8 - bit_shift);

        byte_length = ((w + 7) >> 3);
        adj_raster = ((byte_length + 3) >> 2) << 2;

        buff = mybuf = calloc(adj_raster, h);
        if (!mybuf) {
            /* memory error */
            return -1;
        }
        s = &(data[byte_offset]);
        d = mybuf;
        if (bit_shift) {
            for (i = 0;i < h; i++, d += adj_raster, s+= raster) {
                for (j = 0; j < byte_length; j++) {
                    d[j] = ((s[j] & ~bit_mask) << bit_shift)
                         | ((s[j + 1] & bit_mask) >> (8 - bit_shift));
                }
            }
        } else {
            for (i = 0;i < h; i++, d += adj_raster, s+= raster) {
                for (j = 0; j < byte_length; j++) {
                    d[j] = s[j];
                }
            }
        }
        byte_offset = 0;
    }

#if !(ENABLE_SIMPLE_MODE)
    /* call SaveGS */
    if (apiEntry->opvpSaveGS) {
        apiEntry->opvpSaveGS(printerContext);
    }
#endif
    if (one == gx_no_color_index) {
        gx_color_index tc;

        reverse = (!reverse);
        tc = zero;
        zero = one;
        one = tc;
    }

    if (zero != gx_no_color_index) {
        /* not mask */
        /* Set PaintMode */
        if (apiEntry->opvpSetPaintMode) {
            apiEntry->opvpSetPaintMode(printerContext,OPVP_PAINTMODE_OPAQUE);
        }
        /* zero-color */
        opvp_set_brush_color(pdev, zero, &brush);

        /* call SetBgColor */
        if (apiEntry->opvpSetBgColor) {
            apiEntry->opvpSetBgColor(printerContext, &brush);
        }
    }

    /* one-color */
    opvp_set_brush_color(pdev, one, &brush);

    /* call SetFillColor */
    if (apiEntry->opvpSetFillColor) {
        apiEntry->opvpSetFillColor(printerContext, &brush);
    }

    if (reverse) {
        /* 0/1 reverse image */
        int n = adj_raster*h;

        if (buff == data) {
            /* buff was not allocated from this function yet */
            /* allocate here */
            if ((mybuf = malloc(n)) == 0) return -1;
        }
        for (i = 0;i < n;i++) {
            mybuf[i] = ~buff[i];
        }
        buff = mybuf;
    }
    /* call SetCurrentPoint */
    OPVP_I2FIX(x, point.x);
    OPVP_I2FIX(y, point.y);
    if (apiEntry->opvpSetCurrentPoint) {
        apiEntry->opvpSetCurrentPoint(printerContext,point.x, point.y);
    }

    /* draw image */
    code = opvp_draw_image(pdev,
                           1,
                           w, h,
                           w, h,
                           adj_raster,
                           1,
                           &(buff[byte_offset]));
    if (code) {
        ecode = code;
    }

    if (zero != gx_no_color_index) {
        /* restore PaintMode */
        if (apiEntry->opvpSetPaintMode) {
            apiEntry->opvpSetPaintMode(printerContext,
              OPVP_PAINTMODE_TRANSPARENT);
        }
    }
    /* restore fill color */
    if (vectorFillColor) {
        /* call SetFillColor */
        if (apiEntry->opvpSetFillColor) {
            apiEntry->opvpSetFillColor(printerContext,vectorFillColor);
        }
    }

#if !(ENABLE_SIMPLE_MODE)
    /* call RestoreGS */
    if (apiEntry->opvpRestoreGS) {
        apiEntry->opvpRestoreGS(printerContext);
    }
#endif

    if (buff != data) {
        /* buff was allocated from this function */
        if (mybuf) free(mybuf);
    }

    return ecode;
}

/*
 * copy color
 */
static  int
opvp_copy_color(
    gx_device *dev,
    const byte *data,
    int data_x,
    int raster,
    gx_bitmap_id id,
    int x,
    int y,
    int w,
    int h)
{
    gx_device_opvp *pdev = (gx_device_opvp *)dev;
    int code = -1;
    int ecode = 0;
    opvp_point_t point;
    const byte *buff = data;
    byte *mybuf = NULL;
    int i;
    byte *d;
    const byte *s;
    int byte_length = raster;
    int depth;
    int pixel;
    int adj_raster = raster;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* data offset */
    if (data_x) {
        depth = pdev->color_info.depth;
        pixel = (depth + 7) >> 3;
        byte_length = pixel * w;
        adj_raster = ((byte_length + 3) >> 2) << 2;

        buff = mybuf = malloc(adj_raster * h);
        if (!mybuf) {
            /* memory error */
            return -1;
        }
        s = &(data[data_x*pixel]);
        d = mybuf;
        for (i = 0;i < h; i++, d += adj_raster, s += raster) {
            memcpy(d, s, byte_length);
        }
        data_x = 0;
    }

#if !(ENABLE_SIMPLE_MODE)
    /* call SaveGS */
    if (apiEntry->opvpSaveGS) {
        apiEntry->opvpSaveGS(printerContext);
    }
#endif

    /* call SetCurrentPoint */
    OPVP_I2FIX(x, point.x);
    OPVP_I2FIX(y, point.y);
    if (apiEntry->opvpSetCurrentPoint) {
        apiEntry->opvpSetCurrentPoint(printerContext, point.x, point.y);
    }

    /* draw image */
    code = opvp_draw_image(pdev,
                           pdev->color_info.depth,
                           w, h,
                           w, h,
                           adj_raster,
                           0,
                           &(buff[data_x]));
    if (code) {
        ecode = code;
    }

#if !(ENABLE_SIMPLE_MODE)
    /* call RestoreGS */
    if (apiEntry->opvpRestoreGS) {
        apiEntry->opvpRestoreGS(printerContext);
    }
#endif

    if (buff != data) {
        /* buff was allocated from this function */
        if (mybuf) free(mybuf);
    }

    return ecode;
}

/*
 * get params
 */
static  int
_get_params(gs_param_list *plist)
{
    int code;
    int ecode = 0;
    gs_param_name pname;
    gs_param_string vdps;
    gs_param_string pmps;
    gs_param_string jips;
    gs_param_string dips;
    gs_param_string fips;
    gs_param_string mlps;
    gs_param_string mtps;
    gs_param_string mrps;
    gs_param_string mbps;
    gs_param_string zmps;
    char buff[OPVP_BUFF_SIZE];

    /* get params */

    /* vector driver name */
    pname = "Driver";
    vdps.data = (byte *)vectorDriver;
    vdps.size = (vectorDriver ? strlen(vectorDriver) + 1 : 0);
    vdps.persistent = false;
    code = param_write_string(plist, pname, &vdps);
    if (code) ecode = code;

    /* printer model name */
    pname = "Model";
    pmps.data = (byte *)printerModel;
    pmps.size = (printerModel ? strlen(printerModel) + 1 : 0);
    pmps.persistent = false;
    code = param_write_string(plist, pname, &pmps);
    if (code) ecode = code;

    /* job info */
    pname = "JobInfo";
    jips.data = (byte *)jobInfo;
    jips.size = (jobInfo ? strlen(jobInfo) + 1 : 0);
    jips.persistent = false;
    code = param_write_string(plist, pname, &jips);
    if (code) ecode = code;

    /* doc info */
    pname = "DocInfo";
    dips.data = (byte *)docInfo;
    dips.size = (docInfo ? strlen(docInfo) + 1 : 0);
    dips.persistent = false;
    code = param_write_string(plist, pname, &dips);
    if (code) ecode = code;

    /* fast image support */
    switch (FastImageMode) {
    case FastImageNoCTM:
        opvp_alloc_string(&fastImage, "NoCTM");
        break;
    case FastImageNoRotate:
        opvp_alloc_string(&fastImage, "NoRotateCTM");
        break;
    case FastImageRightAngle:
        opvp_alloc_string(&fastImage, "RightAngleCTM");
        break;
    case FastImageReverseAngle:
        opvp_alloc_string(&fastImage, "ReverseAngleCTM");
        break;
    case FastImageAll:
        opvp_alloc_string(&fastImage, "All");
        break;
    case FastImageDisable:
    default:
        opvp_alloc_string(&fastImage, NULL);
        break;
    }
    pname = "FastImage";
    fips.data = (byte *)fastImage;
    fips.size = (fastImage ? strlen(fastImage) + 1 : 0);
    fips.persistent = false;
    code = param_write_string(plist, pname, &fips);
    if (code) ecode = code;

    /* margins */
    memset((void*)buff, 0, OPVP_BUFF_SIZE);
    pname = "MarginLeft";
    snprintf(buff, OPVP_BUFF_SIZE - 1, "%f",margins[0]);
    mlps.data = (byte *)buff;
    mlps.size = strlen(buff) + 1;
    mlps.persistent = false;
    code = param_write_string(plist, pname, &mlps);
    if (code) ecode = code;
    pname = "MarginTop";
    snprintf(buff, OPVP_BUFF_SIZE - 1, "%f",margins[3]);
    mtps.data = (byte *)buff;
    mtps.size = strlen(buff) + 1;
    mtps.persistent = false;
    code = param_write_string(plist, pname, &mtps);
    if (code) ecode = code;
    pname = "MarginRight";
    snprintf(buff, OPVP_BUFF_SIZE - 1, "%f",margins[2]);
    mrps.data = (byte *)buff;
    mrps.size = strlen(buff) + 1;
    mrps.persistent = false;
    code = param_write_string(plist, pname, &mrps);
    if (code) ecode = code;
    pname = "MarginBottom";
    snprintf(buff, OPVP_BUFF_SIZE - 1, "%f",margins[1]);
    mbps.data = (byte *)buff;
    mbps.size = strlen(buff) + 1;
    mbps.persistent = false;
    code = param_write_string(plist, pname, &mbps);
    if (code) ecode = code;

    /* zoom */
    pname = "Zoom";
    snprintf(buff, OPVP_BUFF_SIZE - 1, "%f",zoom[0]);
    zmps.data = (byte *)buff;
    zmps.size = strlen(buff) + 1;
    zmps.persistent = false;
    code = param_write_string(plist, pname, &zmps);
    if (code) ecode = code;

    return ecode;
}

/*
 * get params for vector
 */
static  int
opvp_get_params(gx_device *dev, gs_param_list *plist)
{
    int code;

    /* get default params */
    code = gdev_vector_get_params(dev, plist);
    if (code) return code;

    /* get params */
    return _get_params(plist);
}

/*
 * get params for inkjet
 */
static  int
oprp_get_params(gx_device *dev, gs_param_list *plist)
{
    int code;

    /* get default params */
    code = gdev_prn_get_params(dev, plist);
    if (code) return code;

    /* get params */
    return _get_params(plist);
}

/*
 * put params
 */
static  int
_put_params(gs_param_list *plist)
{
    int code;
    int ecode = 0;
    gs_param_name pname;
    char *buff = NULL;
    gs_param_string vdps;
    gs_param_string pmps;
    gs_param_string jips;
    gs_param_string dips;
    gs_param_string fips;
    gs_param_string mlps;
    gs_param_string mtps;
    gs_param_string mrps;
    gs_param_string mbps;
    gs_param_string zmps;

    /* vector driver name */
    pname = "Driver";
    code = param_read_string(plist, pname, &vdps);
    switch (code) {
    case 0:
        buff = realloc(buff, vdps.size + 1);
        memcpy(buff, vdps.data, vdps.size);
        buff[vdps.size] = 0;
        opvp_alloc_string(&vectorDriver, buff);
        break;
    case 1:
        /* opvp_alloc_string(&vectorDriver, NULL);*/
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* printer model name */
    pname = "Model";
    code = param_read_string(plist, pname, &pmps);
    switch (code) {
    case 0:
        buff = realloc(buff, pmps.size + 1);
        memcpy(buff, pmps.data, pmps.size);
        buff[pmps.size] = 0;
        opvp_alloc_string(&printerModel, buff);
        break;
    case 1:
        /*opvp_alloc_string(&printerModel, NULL);*/
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* job info */
    pname = "JobInfo";
    code = param_read_string(plist, pname, &jips);
    switch (code) {
    case 0:
        buff = realloc(buff, jips.size + 1);
        memcpy(buff, jips.data, jips.size);
        buff[jips.size] = 0;
        opvp_alloc_string(&jobInfo, buff);
        break;
    case 1:
        /*opvp_alloc_string(&jobInfo, NULL);*/
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* doc info */
    pname = "DocInfo";
    code = param_read_string(plist, pname, &dips);
    switch (code) {
    case 0:
        buff = realloc(buff, dips.size + 1);
        memcpy(buff, dips.data, dips.size);
        buff[dips.size] = 0;
        opvp_alloc_string(&docInfo, buff);
        break;
    case 1:
        /*opvp_alloc_string(&docInfo, NULL);*/
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* fast image support */
    pname = "FastImage";
    code = param_read_string(plist, pname, &fips);
    switch (code) {
    case 0:
        buff = realloc(buff, fips.size + 1);
        memcpy(buff, fips.data, fips.size);
        buff[fips.size] = 0;
        opvp_alloc_string(&fastImage, buff);
        if (strcasecmp(fastImage,"NoCTM")==0) {
            FastImageMode = FastImageNoCTM;
        } else if (strncasecmp(fastImage,"NoRotate",8)==0) {
            FastImageMode = FastImageNoRotate;
        } else if (strncasecmp(fastImage,"Right",5)==0) {
            FastImageMode = FastImageRightAngle;
        } else if (strncasecmp(fastImage,"Reverse",7)==0) {
            FastImageMode = FastImageReverseAngle;
        } else if (strncasecmp(fastImage,"All",3)==0) {
            FastImageMode = FastImageAll;
        } else {
            FastImageMode = FastImageDisable;
        }
        break;
    case 1:
        /*opvp_alloc_string(&fastImage, NULL);*/
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* margins */
    pname = "MarginLeft";
    code = param_read_string(plist, pname, &mlps);
    switch (code) {
    case 0:
        buff = realloc(buff, mlps.size + 1);
        memcpy(buff, mlps.data, mlps.size);
        buff[mlps.size] = 0;
        margins[0] = atof(buff);
        break;
    case 1:
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }
    pname = "MarginTop";
    code = param_read_string(plist, pname, &mtps);
    switch (code) {
    case 0:
        buff = realloc(buff, mtps.size + 1);
        memcpy(buff, mtps.data, mtps.size);
        buff[mtps.size] = 0;
        margins[3] = atof(buff);
        break;
    case 1:
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }
    pname = "MarginRight";
    code = param_read_string(plist, pname, &mrps);
    switch (code) {
    case 0:
        buff = realloc(buff, mrps.size + 1);
        memcpy(buff, mrps.data, mrps.size);
        buff[mrps.size] = 0;
        margins[2] = atof(buff);
        break;
    case 1:
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }
    pname = "MarginBottom";
    code = param_read_string(plist, pname, &mbps);
    switch (code) {
    case 0:
        buff = realloc(buff, mbps.size + 1);
        memcpy(buff, mbps.data, mbps.size);
        buff[mbps.size] = 0;
        margins[1] = atof(buff);
        break;
    case 1:
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    /* zoom */
    pname = "Zoom";
    code = param_read_string(plist, pname, &zmps);
    switch (code) {
    case 0:
        buff = realloc(buff, zmps.size + 1);
        memcpy(buff, zmps.data, zmps.size);
        buff[zmps.size] = 0;
        if (strncasecmp(buff, "Auto", 4)) {
            zoom[0] = atof(buff);
            if (zoom[0] > 0) {
                zoom[1] = zoom[0];
            } else {
                zoom[0] = zoom[1] = 1;
            }
        } else {
            zoom[0] = zoom[1] = 1;
            zoomAuto = true;
        }
        break;
    case 1:
        break;
    default:
        ecode = code;
        param_signal_error(plist, pname, ecode);
    }

    if (buff) free(buff);

    return ecode;
}

/*
 * put params for vector
 */
static  int
opvp_put_params(gx_device *dev, gs_param_list *plist)
{
    int code;

    /* put params */
    code = _put_params(plist);
    if (code) return code;

    /* put default params */
    return gdev_vector_put_params(dev, plist);
}

/*
 * put params for inkjet
 */
static  int
oprp_put_params(gx_device *dev, gs_param_list *plist)
{
    int code;

    /* put params */
    code = _put_params(plist);
    if (code) return code;

    /* put default params */
    return gdev_prn_put_params(dev, plist);
}

static int checkPath(const gx_path *ppath)
{
    unsigned int npoints = 0;
    fixed vs[6];
    int op;
    gs_path_enum path;

    gx_path_enum_init(&path, ppath);

    while ((op = gx_path_enum_next(&path, (gs_fixed_point *)vs)) != 0) {
        switch (op) {
        case gs_pe_lineto:
        case gs_pe_moveto:
            npoints += 1;
            break;
        case gs_pe_curveto:
            npoints += 3;
            break;
        case gs_pe_closepath:
            break;
        default:
            break;
        }
        if (npoints > MAX_PATH_POINTS) {
            return 0;
        }

    }
    return 1;
}

static int checkCPath(const gx_clip_path *pcpath)
{
    const gx_clip_list *list;
    const gx_clip_rect *prect;
    int npoints;

    if (pcpath == 0) return 1;
    if (pcpath->path_valid) {
        return checkPath(&pcpath->path);
    }
    list = gx_cpath_list(pcpath);
    prect = list->head;
    if (prect == 0) {
        prect = &list->single;
    }
    npoints = 0;
    for (;prect != 0;prect = prect->next) {
        npoints += 4;
        if (npoints > MAX_PATH_POINTS) {
            return 0;
        }
    }
    return 1;
}

/*
 * fill path
 */
static  int
opvp_fill_path(
    gx_device *dev,
    const gs_imager_state *pis,
    gx_path *ppath,
    const gx_fill_params *params,
    const gx_device_color *pdevc,
    const gx_clip_path *pxpath)
{
    bool draw_image = false;
    gs_fixed_rect inner, outer;

    /* check if paths are too complex */
    if (!checkPath(ppath) || !checkCPath(pxpath)) {
        return gx_default_fill_path(dev, pis, ppath, params, pdevc, pxpath);
    }
    /* check clippath support */
    if (!(apiEntry->opvpSetClipPath)) {
        /* get clipping box area */
        gx_cpath_inner_box(pxpath,&inner);
        gx_cpath_outer_box(pxpath,&outer);
        /* check difference between inner-box and outer-box */
        if ((inner.p.x != outer.p.x) || (inner.p.y != outer.p.y) ||
            (inner.q.x != outer.q.x) || (inner.q.y != outer.q.y)) {
            /* set draw by image */
            draw_image = true;
        }
    }

    if (!vector || draw_image) {
        return gx_default_fill_path(dev, pis, ppath, params, pdevc, pxpath);
    }

    return gdev_vector_fill_path(dev, pis, ppath, params, pdevc, pxpath);
}

/*
 * stroke path
 */
static  int
opvp_stroke_path(
    gx_device *dev,
    const gs_imager_state *pis,
    gx_path *ppath,
    const gx_stroke_params *params,
    const gx_drawing_color *pdcolor,
    const gx_clip_path *pxpath)
{
    bool draw_image = false;
    gs_fixed_rect inner, outer;

    /* check if paths are too complex */
    if (!checkPath(ppath) || !checkCPath(pxpath)) {
        return gx_default_stroke_path(dev, pis, ppath,
                                      params, pdcolor, pxpath);
    }
    /* check clippath support */
    if (!(apiEntry->opvpSetClipPath)) {
        /* get clipping box area */
        gx_cpath_inner_box(pxpath,&inner);
        gx_cpath_outer_box(pxpath,&outer);
        /* check difference between inner-box and outer-box */
        if ((inner.p.x != outer.p.x) || (inner.p.y != outer.p.y) ||
            (inner.q.x != outer.q.x) || (inner.q.y != outer.q.y)) {
            /* set draw by image */
            draw_image = true;
        }
    }

    if (!vector || draw_image) {
        return gx_default_stroke_path(dev, pis, ppath,
                                      params, pdcolor, pxpath);
    }

    return gdev_vector_stroke_path(dev, pis, ppath,
                                   params, pdcolor, pxpath);
}

/*
 * fill mask
 */
static  int
opvp_fill_mask(
    gx_device *dev,
    const byte *data,
    int data_x,
    int raster,
    gx_bitmap_id id,
    int x,
    int y,
    int w,
    int h,
    const gx_drawing_color *pdcolor,
    int depth,
    gs_logical_operation_t lop,
    const gx_clip_path *pcpath)
{
    if (vector) {
#if GS_VERSION_MAJOR >= 8       /* for gs 8.15 */
        gdev_vector_update_fill_color((gx_device_vector *)dev, NULL, pdcolor);
#else
        gdev_vector_update_fill_color((gx_device_vector *)dev, pdcolor);
#endif
        gdev_vector_update_clip_path((gx_device_vector *)dev, pcpath);
        gdev_vector_update_log_op((gx_device_vector *)dev, lop);
    }

    return gx_default_fill_mask(dev, data, data_x, raster, id,
                                x, y, w, h, pdcolor, depth, lop, pcpath);
}

/*
 * begin image
 */
static  int
opvp_begin_image(
    gx_device *dev,
    const gs_imager_state *pis,
    const gs_image_t *pim,
    gs_image_format_t format,
    const gs_int_rect *prect,
    const gx_drawing_color *pdcolor,
    const gx_clip_path *pcpath,
    gs_memory_t  *mem,
    gx_image_enum_common_t **pinfo)
{
    gx_device_vector *vdev =(gx_device_vector *)dev;
    gdev_vector_image_enum_t *vinfo;
    gs_matrix mtx;
    opvp_ctm_t ctm;
    bool draw_image = false;
    bool supported_angle = false;
    int code = -1;
    opvp_result_t r = -1;
    int ecode = 0;
    int bits_per_pixel = 24;
    bool can_reverse = false;
    int p;
    float mag[2] = {1, 1};
    const gs_color_space *pcs = pim->ColorSpace;

    /* check if paths are too complex */
    if (!checkCPath(pcpath)) {
        return gx_default_begin_image(
                    dev, pis, pim, format,
                    prect, pdcolor, pcpath,
                    mem, pinfo);
    }

    color_index = 0;

    vinfo = gs_alloc_struct(mem, gdev_vector_image_enum_t,
                            &st_vector_image_enum,
                            "opvp_begin_image");

    if (vinfo) {
        memcpy(imageDecode,pim->Decode,sizeof(pim->Decode));
        vinfo->memory =mem;
        code = gdev_vector_begin_image(vdev, pis, pim, format, prect,
                                       pdcolor, pcpath, mem,
                                       &opvp_image_enum_procs,
                                       vinfo);
        if (code) ecode = code;

        if (!ecode) {
            /* bits per pixel */
            for (bits_per_pixel=0, p=0; p < vinfo->num_planes; p++) {
                bits_per_pixel += vinfo->plane_depths[p];
            }

            /* for indexed color */
            if (!(pim->ImageMask)) {
                color_index = gs_color_space_get_index(pcs);
                if (color_index == gs_color_space_index_Indexed) {
                    base_color_index
                      = gs_color_space_indexed_base_space(pcs)->type->index;
                    if (((pcs->params.indexed.hival + 1) > 256)
                        || (bits_per_pixel != 8 && bits_per_pixel != 1)) {
                        return gx_default_begin_image(
                                dev, pis, pim, format,
                                prect, pdcolor, pcpath,
                                mem, pinfo);
                    } else if (base_color_index
                         == gs_color_space_index_DeviceCMYK) {
                        /* for CMYK indexed color */
                        int count;
                        const unsigned char *p
                             = pcs->params.indexed.lookup.table.data;
                        frac rgb[3];

                        for(count = 0;count <
                             (pcs->params.indexed.hival + 1); count++) {
                            memset(rgb, 0, sizeof(rgb));
                            color_cmyk_to_rgb(
                               byte2frac((*(p + 0 + (count * 4)))),
                               byte2frac((*(p + 1 + (count * 4)))),
                               byte2frac((*(p + 2 + (count * 4)))),
                               byte2frac((*(p + 3 + (count * 4)))),
#if GS_VERSION_MAJOR >= 9
                               pis, rgb, mem);
#else
                               pis, rgb);
#endif
                            *(palette + 0 + (count * 3)) = frac2byte(rgb[0]);
                            *(palette + 1 + (count * 3)) = frac2byte(rgb[1]);
                            *(palette + 2 + (count * 3)) = frac2byte(rgb[2]);
                        }

                        bits_per_pixel = 24;
                    } else if (base_color_index
                        == gs_color_space_index_DeviceRGB ||
                        base_color_index == gs_color_space_index_CIEABC) {
                        /* for RGB or CalRGB indexed color */
                        memcpy(palette, pcs->params.indexed.lookup.table.data,\
                        pcs->params.indexed.lookup.table.size);
                        bits_per_pixel = 24;
                    } else if (base_color_index
                        == gs_color_space_index_DeviceGray ||
                        base_color_index == gs_color_space_index_CIEA) {
                        /* for Gray or CalGray indexed color */
                        memcpy(palette, pcs->params.indexed.lookup.table.data,\
                        pcs->params.indexed.lookup.table.size);
                        bits_per_pixel = 8;
                    } else {
                        /* except CMYK and RGB */
                        return gx_default_begin_image(
                                    dev, pis, pim, format,
                                    prect, pdcolor, pcpath,
                                    mem, pinfo);
                    }
                }
            }

#if ENABLE_AUTO_REVERSE
            if (bits_per_pixel % 8 == 0) {
                can_reverse = true;
            }
#endif
            /* adjust matrix */
            reverse_image = false;
            gs_matrix_invert(&pim->ImageMatrix, &mtx);
            gs_matrix_multiply(&mtx, &ctm_only(pis), &mtx);
            switch (FastImageMode) {
            case FastImageNoCTM:
                if ((mtx.xy==0)&&(mtx.yx==0)&& (mtx.yy>=0)) {
                    if (mtx.xx>=0) {
                        mag[0] = mtx.xx;
                        mag[1] = mtx.yy;
                        mtx.xx = 1;
                        mtx.yy = 1;
                        supported_angle = true;
                    } else if (can_reverse) {
                        mtx.xx *= -1;
                        mag[0] = mtx.xx;
                        mag[1] = mtx.yy;
                        mtx.xx = 1;
                        mtx.yy = 1;
                        mtx.tx -= vinfo->width
                                * mag[0];
                        supported_angle = true;
                        reverse_image = true;
                    }
                }
                break;
            case FastImageNoRotate:
                if ((mtx.xy==0)&&(mtx.yx==0)&& (mtx.yy>=0)) {
                    if (mtx.xx>=0) {
                        supported_angle = true;
                    } else if (can_reverse) {
                        mtx.xx *= -1;
                        mtx.tx -= vinfo->width
                                * mtx.xx;
                        supported_angle = true;
                        reverse_image = true;
                    }
                }
                break;
            case FastImageRightAngle:
                if ((mtx.xy==0)&&(mtx.yx==0)) {
                    if (((mtx.xx>=0)&&(mtx.yy>=0))||
                        ((mtx.xx<=0)&&(mtx.yy<=0))){
                        supported_angle = true;
                    } else if (can_reverse) {
                        mtx.xx *= -1;
                        mtx.tx -= vinfo->width
                                * mtx.xx;
                        supported_angle = true;
                        reverse_image = true;
                    }
                } else if ((mtx.xx==0)&&(mtx.yy==0)) {
                    if (((mtx.xy>=0)&&(mtx.yx<=0))||
                        ((mtx.xy<=0)&&(mtx.yx>=0))){
                        supported_angle = true;
                    } else if (can_reverse) {
                        mtx.xy *= -1;
                        mtx.ty -= vinfo->height
                                * mtx.xy;
                        supported_angle = true;
                        reverse_image = true;
                    }
                }
                break;
            case FastImageReverseAngle:
                if (((mtx.xy==0)&&(mtx.yx==0))||
                    ((mtx.xx==0)&&(mtx.yy==0))) {
                    supported_angle = true;
                }
                break;
            case FastImageAll:
                supported_angle = true;
                break;
            case FastImageDisable:
            default:
                break;
            }
        }

        if ((!ecode) && supported_angle) {
            if ((!prect) &&
                ((vinfo->num_planes == 1) ||
                 ((vinfo->num_planes == 3) &&
                  (vinfo->plane_depths[0] == 8) &&
                  (vinfo->plane_depths[1] == 8) &&
                  (vinfo->plane_depths[2] == 8))
                )
               ) {
                /*
                 * avail only
                 * 1 plane image
                 * or
                 * 3 planes 24 bits color image
                 * (8 bits per plane)
                 */
                if (apiEntry->opvpStartDrawImage) {
                    draw_image = true;
                }
            }
        }
    }

    if (draw_image) {
        *pinfo = (gx_image_enum_common_t *)vinfo;

        if (!ecode) {
            if (!pim->ImageMask) {
                /* call SetPaintMode */
                if (apiEntry->opvpSetPaintMode) {
                    apiEntry->opvpSetPaintMode(printerContext,
                       OPVP_PAINTMODE_OPAQUE);
                    change_paint_mode = true;
                }
                /* set color space */
                if (apiEntry->opvpSetColorSpace != NULL) {
                    opvp_cspace_t ncspace;

                    savedColorSpace = colorSpace;
                    switch (bits_per_pixel) {
                    case 1:
                        ncspace = OPVP_CSPACE_DEVICEGRAY;
                        bits_per_pixel = 8;
                        if (!cspace_available[ncspace]) {
                            ncspace = OPVP_CSPACE_STANDARDRGB;
                            bits_per_pixel = 24;
                        }
                        break;
                    case 8:
                        ncspace = OPVP_CSPACE_DEVICEGRAY;
                        if (!cspace_available[ncspace]) {
                            ncspace = OPVP_CSPACE_STANDARDRGB;
                            bits_per_pixel = 24;
                        }
                        break;
                    case 24:
                        ncspace = OPVP_CSPACE_DEVICERGB;
                        if (!cspace_available[ncspace]) {
                            ncspace = OPVP_CSPACE_STANDARDRGB;
                        }
                        break;
                    default:
                        r = -1;
                        goto fallthrough;
                        break;
                    }
                    if (ncspace != colorSpace) {
                        if (apiEntry->opvpSetColorSpace(printerContext,ncspace)
                             != OPVP_OK) {
                            r = -1;
                            goto fallthrough;
                        }
                        colorSpace = ncspace;
                        change_cspace = true;
                    }
                }
            }
        }
        if (!ecode) {
            if (supported_angle) {
                /* moveto */
                opvp_moveto(vdev, 0, 0, mtx.tx, mtx.ty, 0);
            }
            if ((supported_angle) && (FastImageMode != FastImageNoCTM)) {
                /* call SetCTM */
                ctm.a = mtx.xx;
                ctm.b = mtx.xy;
                ctm.c = mtx.yx;
                ctm.d = mtx.yy;
                ctm.e = mtx.tx;
                ctm.f = mtx.ty;
                if (apiEntry->opvpSetCTM) {
                    r = apiEntry->opvpSetCTM(printerContext, &ctm);
                }
                else r = -1;
                if (r != OPVP_OK) ecode = r;
            }
        }
        if (!ecode) {
            int dw,dh;

            /* image size */
            if (mag[0] != 1) {
                dw = floor(vinfo->width * mag[0]+0.5);
            } else {
                dw = vinfo->width;
            }
            if (mag[1] != 1) {
                dh = floor(vinfo->height * mag[1]+0.5);
            } else {
                dh = vinfo->height;
            }
            /* call StartDrawImage */
            if (apiEntry->opvpStartDrawImage) {
                opvp_int_t adj_raster;

                adj_raster = bits_per_pixel*vinfo->width;
                adj_raster = ((adj_raster+31) >> 5) << 2;
                r = apiEntry->opvpStartDrawImage(
                                        printerContext,
                                        vinfo->width,
                                        vinfo->height,
                                        adj_raster,
                                        pim->ImageMask ?
                                          OPVP_IFORMAT_MASK:
                                          OPVP_IFORMAT_RAW,
                                        dw,dh);
                if(r != OPVP_OK) {
                    if (apiEntry->opvpEndDrawImage) {
                        apiEntry->opvpEndDrawImage(printerContext);
                    }
                }
            }

            /* bugfix for 32bit CMYK image print error */
fallthrough:
            if(r != OPVP_OK) {
                if (change_paint_mode) {
                    /* restore paint mode */
                    if (apiEntry->opvpSetPaintMode) {
                        apiEntry->opvpSetPaintMode(printerContext,
                           OPVP_PAINTMODE_TRANSPARENT);
                    }
                    change_paint_mode = false;
                }
                if (change_cspace) {
                    /* restore color space */
                    colorSpace = savedColorSpace;
                    if (apiEntry->opvpSetColorSpace) {
                        apiEntry->opvpSetColorSpace(printerContext,
                           colorSpace);
                    }
                    change_cspace = false;
                }
                if(apiEntry->opvpResetCTM) {
                    apiEntry->opvpResetCTM(printerContext); /* reset CTM */
                }
                return gx_default_begin_image(dev, pis, pim, format,
                                    prect, pdcolor, pcpath, mem, pinfo);
            }
        }

        if (!ecode) {
            begin_image = true;
        }

        return ecode;
    }

    return gx_default_begin_image(dev, pis, pim, format, prect,
                                  pdcolor, pcpath, mem, pinfo);
}

/*
 * plane data
 */
static  int
opvp_image_plane_data(
    gx_image_enum_common_t *info,
    const gx_image_plane_t *planes,
    int height,
    int *rows_used)
{
    gdev_vector_image_enum_t *vinfo;
    byte *tmp_buf = NULL;
    byte *buf = NULL;
    int bits_per_pixel;
    int data_bytes, dst_bytes;
    int raster_length, dst_length;
    int p;
    int x;
    int d;
    int h;
    int ecode = 0;
    int i, j;
    byte *src_ptr, *dst_ptr, *ppalette;
    byte *ptr;
    bbox_image_enum *pbe;
    gx_image_enum *tinfo;
    const gs_imager_state *pis;

    vinfo = (gdev_vector_image_enum_t *)info;

    if (!begin_image) return 0;

    for (bits_per_pixel=0, p=0; p < vinfo->num_planes; p++) {
        bits_per_pixel += vinfo->plane_depths[p];
    }

    data_bytes = (bits_per_pixel * vinfo->width + 7) >> 3;
    raster_length = ((data_bytes + 3) >> 2) << 2;
    buf = calloc(raster_length, height);

    if (vinfo->default_info) {
        gx_image_plane_data(vinfo->default_info, planes, height);
    }
    if (vinfo->bbox_info) {
        gx_image_plane_data(vinfo->bbox_info, planes, height);
    }

    if (buf) {
        /* Adjust image data gamma */
        pbe = (bbox_image_enum *)vinfo->bbox_info;
        tinfo = (gx_image_enum *)pbe->target_info;
        pis = tinfo->pis;

        if (vinfo->num_planes == 1) {
            for (h = 0; h < height; h++) {
                d = raster_length * h;
                if (reverse_image) {
                    int bytes_per_pixel = bits_per_pixel / 8;
                    for (x = data_bytes * (h + 1) - bytes_per_pixel;
                          x >= data_bytes * h;
                          x-=bytes_per_pixel,
                          d+=bytes_per_pixel) {
                        memcpy(buf+d, planes[0].data+x, bytes_per_pixel);
                    }
                } else {
                    memcpy(buf + d,
                           planes[0].data
                           + (data_bytes * h),
                           data_bytes);
                }
            }
        } else {
            for (h = 0; h < height; h++) {
                d = raster_length * h;
                if (reverse_image) {
                    for (x = vinfo->width * (h + 1) - 1;
                         x >= vinfo->width * h;
                         x--) {
                        for (p = 0;
                             p < vinfo->num_planes;
                             p++, d++) {
                            buf[d] = (byte)(planes[p].data[x]);
                        }
                    }
                } else {
                    for (x = vinfo->width * h;
                         x < vinfo->width * (h + 1);
                         x++) {
                        for (p = 0;
                             p < vinfo->num_planes;
                             p++, d++) {
                            buf[d] = (byte)
                               (planes[p].data[x]);
                        }
                    }
                }
            }
        }

        if (tinfo->masked) {
            bool reverse = false;

            /* image mask */
            if (imageDecode[0] == 0) {
                reverse = true;
            }
            if (reverse) {
                for (i = 0; i < height; i++) {
                    src_ptr = buf + raster_length * i;
                    for (j = 0; j < data_bytes; j++) {
                        src_ptr[j] ^= 0xff;
                    }
                }
            }
        } else {
            if(color_index == gs_color_space_index_Indexed) {
                if (base_color_index == gs_color_space_index_DeviceGray ||
                   base_color_index == gs_color_space_index_CIEA) {
                    if (colorSpace == OPVP_CSPACE_DEVICEGRAY) {
                        /* Convert indexed gray color -> Gray */
                        if (bits_per_pixel == 8) { /* 8bit image */
                            dst_bytes = data_bytes;
                            dst_length = ((dst_bytes + 3) >> 2) << 2;

                            tmp_buf = calloc(dst_length, height);
                            if (tmp_buf) {
                                for (i = 0; i < height; i++) {
                                    src_ptr = buf + raster_length * i;
                                    dst_ptr = tmp_buf + dst_length * i;
                                    for (j = 0; j < data_bytes; j++) {
                                        ppalette = palette + src_ptr[j] ;
                                        dst_ptr[j] = ppalette[0];
                                    }
                                }

                                free (buf);
                                buf = tmp_buf;
                                data_bytes = dst_bytes;
                                raster_length = dst_length;
                                vinfo->bits_per_pixel = 8;
                            }
                        } else { /* 1bit image */
                            dst_bytes = vinfo->width;
                            dst_length = ((dst_bytes + 3) >> 2) << 2;

                            tmp_buf = calloc(dst_length, height);
                            if (tmp_buf) {
                                for (i = 0; i < height; i++) {
                                    src_ptr = buf + raster_length * i;
                                    dst_ptr = tmp_buf + dst_length * i;
                                    for (j = 0; j < vinfo->width; j++) {
                                        int o = ((src_ptr[j/8] & (1 << (7 - (j & 7))))
                                                   != 0);
                                        ppalette = palette + o;
                                        dst_ptr[j] = ppalette[0];
                                    }
                                }

                                free (buf);
                                buf = tmp_buf;
                                data_bytes = dst_bytes;
                                raster_length = dst_length;
                                vinfo->bits_per_pixel = 8;
                            }
                        }
                    } else {
                        /* Convert indexed Gray color -> RGB */
                        if (bits_per_pixel == 8) { /* 8bit image */
                            dst_bytes = data_bytes * 3;
                            dst_length = ((dst_bytes + 3) >> 2) << 2;

                            tmp_buf = calloc(dst_length, height);
                            if (tmp_buf) {
                                for (i = 0; i < height; i++) {
                                    src_ptr = buf + raster_length * i;
                                    dst_ptr = tmp_buf + dst_length * i;
                                    for (j = 0; j < data_bytes; j++) {
                                        ppalette = palette + src_ptr[j] * 3;
                                        dst_ptr[j*3] = ppalette[0]; /* R */
                                        dst_ptr[j*3 + 1] = ppalette[0]; /* G */
                                        dst_ptr[j*3 + 2] = ppalette[0]; /* B */
                                    }
                                }

                                free (buf);
                                buf = tmp_buf;
                                data_bytes = dst_bytes;
                                raster_length = dst_length;
                                vinfo->bits_per_pixel = 24;
                            }
                        } else { /* 1bit image */
                            dst_bytes = vinfo->width * 3;
                            dst_length = ((dst_bytes + 3) >> 2) << 2;

                            tmp_buf = calloc(dst_length, height);
                            if (tmp_buf) {
                                for (i = 0; i < height; i++) {
                                    src_ptr = buf + raster_length * i;
                                    dst_ptr = tmp_buf + dst_length * i;
                                    for (j = 0; j < vinfo->width; j++) {
                                        int o = ((src_ptr[j/8] & (1 << (7 - (j & 7))))
                                                   != 0);
                                        ppalette = palette + o * 3;
                                        dst_ptr[j*3] = ppalette[0]; /* R */
                                        dst_ptr[j*3 + 1] = ppalette[0]; /* G */
                                        dst_ptr[j*3 + 2] = ppalette[0]; /* B */
                                    }
                                }

                                free (buf);
                                buf = tmp_buf;
                                data_bytes = dst_bytes;
                                raster_length = dst_length;
                                vinfo->bits_per_pixel = 24;
                            }
                        }
                    }
                } else {
                    /* Convert indexed color -> RGB */
                    if (bits_per_pixel == 8) { /* 8bit image */
                        dst_bytes = data_bytes * 3;
                        dst_length = ((dst_bytes + 3) >> 2) << 2;

                        tmp_buf = calloc(dst_length, height);
                        if (tmp_buf) {
                            for (i = 0; i < height; i++) {
                                src_ptr = buf + raster_length * i;
                                dst_ptr = tmp_buf + dst_length * i;
                                for (j = 0; j < data_bytes; j++) {
                                    ppalette = palette + src_ptr[j] * 3;
                                    dst_ptr[j*3] = ppalette[0]; /* R */
                                    dst_ptr[j*3 + 1] = ppalette[1]; /* G */
                                    dst_ptr[j*3 + 2] = ppalette[2]; /* B */
                                }
                            }

                            free (buf);
                            buf = tmp_buf;
                            data_bytes = dst_bytes;
                            raster_length = dst_length;
                            vinfo->bits_per_pixel = 24;
                        }
                    } else { /* 1bit image */
                        dst_bytes = vinfo->width * 3;
                        dst_length = ((dst_bytes + 3) >> 2) << 2;

                        tmp_buf = calloc(dst_length, height);
                        if (tmp_buf) {
                            for (i = 0; i < height; i++) {
                                src_ptr = buf + raster_length * i;
                                dst_ptr = tmp_buf + dst_length * i;
                                for (j = 0; j < vinfo->width; j++) {
                                    int o = ((src_ptr[j/8] & (1 << (7 - (j & 7))))
                                               != 0);
                                    ppalette = palette + o * 3;
                                    dst_ptr[j*3] = ppalette[0]; /* R */
                                    dst_ptr[j*3 + 1] = ppalette[1]; /* G */
                                    dst_ptr[j*3 + 2] = ppalette[2]; /* B */
                                }
                            }

                            free (buf);
                            buf = tmp_buf;
                            data_bytes = dst_bytes;
                            raster_length = dst_length;
                            vinfo->bits_per_pixel = 24;
                        }
                    }
                }
            }

            /* Convert Gray */
            if(color_index == gs_color_space_index_DeviceGray ||
               color_index == gs_color_space_index_CIEA) {
                if (colorSpace == OPVP_CSPACE_STANDARDRGB
                  || colorSpace == OPVP_CSPACE_DEVICERGB) {
                    /* convert to RGB */
                    if (bits_per_pixel == 8) { /* 8bit image */
                        dst_bytes = data_bytes * 3;
                        dst_length = ((dst_bytes + 3) >> 2) << 2;

                        tmp_buf = calloc(dst_length, height);
                        if (tmp_buf) {
                            for (i = 0; i < height; i++) {
                                src_ptr = buf + raster_length * i;
                                dst_ptr = tmp_buf + dst_length * i;
                                for (j = 0; j < data_bytes; j++) {
                                    unsigned char d = floor(
                                      imageDecode[0]*255 + src_ptr[j]*
                                      (imageDecode[1]-imageDecode[0])+0.5);

                                    dst_ptr[j*3] = d; /* R */
                                    dst_ptr[j*3 + 1] = d; /* G */
                                    dst_ptr[j*3 + 2] = d; /* B */
                                }
                            }

                            free (buf);
                            buf = tmp_buf;
                            data_bytes = dst_bytes;
                            raster_length = dst_length;
                            vinfo->bits_per_pixel = 24;
                        }
                    } else { /* 1bit image */
                        dst_bytes = vinfo->width * 3;
                        dst_length = ((dst_bytes + 3) >> 2) << 2;

                        tmp_buf = calloc(dst_length, height);
                        if (tmp_buf) {
                            for (i = 0; i < height; i++) {
                                src_ptr = buf + raster_length * i;
                                dst_ptr = tmp_buf + dst_length * i;
                                for (j = 0; j < vinfo->width; j++) {
                                    int o = ((src_ptr[j/8] & (1 << (7 - (j & 7))))
                                              != 0);
                                    unsigned char d = floor(
                                      imageDecode[0]*255 + o*
                                      (imageDecode[1]-imageDecode[0])*255+0.5);
                                    dst_ptr[j*3] = d; /* R */
                                    dst_ptr[j*3 + 1] = d; /* G */
                                    dst_ptr[j*3 + 2] =d; /* B */
                                }
                            }

                            free (buf);
                            buf = tmp_buf;
                            data_bytes = dst_bytes;
                            raster_length = dst_length;
                            vinfo->bits_per_pixel = 24;
                        }
                    }
                } else if (colorSpace == OPVP_CSPACE_DEVICEGRAY) {
                    if (bits_per_pixel == 1) { /* 1bit image */
                        dst_bytes = vinfo->width;
                        dst_length = ((dst_bytes + 3) >> 2) << 2;

                        tmp_buf = calloc(dst_length, height);
                        if (tmp_buf) {
                            for (i = 0; i < height; i++) {
                                src_ptr = buf + raster_length * i;
                                dst_ptr = tmp_buf + dst_length * i;
                                for (j = 0; j < vinfo->width; j++) {
                                    int o = ((src_ptr[j/8] & (1 << (7 - (j & 7))))
                                              != 0);
                                    unsigned char d = floor(
                                      imageDecode[0]*255 + o*
                                      (imageDecode[1]-imageDecode[0])*255+0.5);
                                    dst_ptr[j] = d; /* R */
                                }
                            }

                            free (buf);
                            buf = tmp_buf;
                            data_bytes = dst_bytes;
                            raster_length = dst_length;
                            vinfo->bits_per_pixel = 8;
                        }
                    }
                }
            }
        }
#if GS_VERSION_MAJOR >= 8
        if (vinfo->bits_per_pixel == 24) { /* 24bit RGB color */
            for (i = 0; i < height; i++) {
                ptr = buf + raster_length * i;
                for (j = 0; j < vinfo->width; j++) {
                    ptr[j*3] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3]), effective_transfer[0])));
                    ptr[j*3+1] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3+1]), effective_transfer[1])));
                    ptr[j*3+2] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3+2]), effective_transfer[2])));
                }
            }
        } else if (vinfo->bits_per_pixel == 8) { /* 8bit Gray image */
            for (i = 0; i < height; i++) {
                ptr = buf + raster_length * i;
                for (j=0; j < vinfo->width; j++) {
                    ptr[j] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j]), effective_transfer[3])));
                }
            }
        }
#else
        if (vinfo->bits_per_pixel == 24) { /* 24bit RGB color */
            for (i = 0; i < height; i++) {
                ptr = buf + raster_length * i;
                for (j = 0; j < vinfo->width; j++) {
                    ptr[j*3] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3]), effective_transfer.colored.red)));
                    ptr[j*3+1] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3+1]), effective_transfer.colored.green)));
                    ptr[j*3+2] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j*3+2]), effective_transfer.colored.blue)));
                }
            }
        } else if (vinfo->bits_per_pixel == 8) { /* 8bit Gray image */
            for (i = 0; i < height; i++) {
                ptr = buf + raster_length * i;
                for (j = 0; j < vinfo->width; j++) {
                    ptr[j] = min(255, frac2cv(gx_map_color_frac(pis,
                      cv2frac(ptr[j]), effective_transfer.colored.gray)));
                }
            }
        }
#endif

        /* call TansferDrawImage */
        if (apiEntry->opvpTransferDrawImage) {
            apiEntry->opvpTransferDrawImage(printerContext,
                        raster_length * height, (void *)buf);
        }
        if (buf) {
            free(buf); /* free buffer */
        }
    }

    vinfo->y += height;
    ecode = (vinfo->y >= vinfo->height);

    return ecode;
}

/*
 * end image
 */
static  int
opvp_image_end_image(gx_image_enum_common_t *info, bool draw_last)
{
    gx_device *dev = info->dev;
    gx_device_vector *vdev = (gx_device_vector *)dev;
    gdev_vector_image_enum_t *vinfo;
    opvp_ctm_t ctm;

    vinfo = (gdev_vector_image_enum_t *)info;

    if (begin_image) {
        /* call EndDrawImage */
        if (apiEntry->opvpEndDrawImage) {
            apiEntry->opvpEndDrawImage(printerContext);
        }

        begin_image = false;

        if (FastImageMode != FastImageNoCTM) {
            /* call ResetCTM */
            if (apiEntry->opvpResetCTM) {
                apiEntry->opvpResetCTM(printerContext);
            } else {
                /* call SetCTM */
                ctm.a = 1;
                ctm.b = 0;
                ctm.c = 0;
                ctm.d = 1;
                ctm.e = 0;
                ctm.f = 0;
                if (apiEntry->opvpSetCTM) {
                    apiEntry->opvpSetCTM(printerContext, &ctm);
                }
            }
        }
        if (change_paint_mode) {
            /* restore paint mode */
            if (apiEntry->opvpSetPaintMode) {
                apiEntry->opvpSetPaintMode(printerContext,
                   OPVP_PAINTMODE_TRANSPARENT);
            }
            change_paint_mode = false;
        }
        if (change_cspace) {
            /* restore color space */
            colorSpace = savedColorSpace;
            if (apiEntry->opvpSetColorSpace) {
                apiEntry->opvpSetColorSpace(printerContext,
                   colorSpace);
            }
            change_cspace = false;
        }
    }

    return gdev_vector_end_image(vdev, vinfo, draw_last, vdev->white);
}

/* ----- vector driver procs ----- */
/*
 * begin page
 */
static  int
opvp_beginpage(gx_device_vector *vdev)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    int code = -1;
    int ecode = 0;

#ifdef OPVP_IGNORE_BLANK_PAGE
    if (pdev->in_page) return 0;
#endif
    /* start page */
    code = opvp_startpage((gx_device *)pdev);
    if (code) {
        ecode = code;
    } else {
        pdev->in_page = true;   /* added '05.12.07 */
        beginPage = true;
    }

    return ecode;
}

/*
 * set line width
 */
static  int
opvp_setlinewidth(gx_device_vector *vdev, double width)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_fix_t w;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* call SetLineWidth */
    OPVP_F2FIX(width, w);
    if (apiEntry->opvpSetLineWidth) {
        r = apiEntry->opvpSetLineWidth(printerContext, w);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * set line cap
 */
static  int
opvp_setlinecap(gx_device_vector *vdev, gs_line_cap cap)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_linecap_t linecap;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    switch (cap) {
    case gs_cap_butt:
        linecap = OPVP_LINECAP_BUTT;
        break;
    case gs_cap_round:
        linecap = OPVP_LINECAP_ROUND;
        break;
    case gs_cap_square:
        linecap = OPVP_LINECAP_SQUARE;
        break;
    case gs_cap_triangle:
    default:
        linecap = OPVP_LINECAP_BUTT;
        break;
    }

    /* call SetLineCap */
    if (apiEntry->opvpSetLineCap) {
        r = apiEntry->opvpSetLineCap(printerContext, linecap);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * set line join
 */
static  int
opvp_setlinejoin(gx_device_vector *vdev, gs_line_join join)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_linejoin_t linejoin;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    switch (join) {
    case gs_join_miter:
        linejoin = OPVP_LINEJOIN_MITER;
        break;
    case gs_join_round:
        linejoin = OPVP_LINEJOIN_ROUND;
        break;
    case gs_join_bevel:
        linejoin = OPVP_LINEJOIN_BEVEL;
        break;
    case gs_join_none:
    case gs_join_triangle:
    default:
        linejoin = OPVP_LINEJOIN_MITER;
        break;
    }

    /* call SetLineJoin */
    if (apiEntry->opvpSetLineJoin) {
        r = apiEntry->opvpSetLineJoin(printerContext, linejoin);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * set miter limit
 */
static  int
opvp_setmiterlimit(gx_device_vector *vdev, double limit)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_fix_t l;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* call SetMiterLimit */
    OPVP_F2FIX(limit, l);
    if (apiEntry->opvpSetMiterLimit) {
        r = apiEntry->opvpSetMiterLimit(printerContext, l);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * set dash
 */
static  int
opvp_setdash(
    gx_device_vector *vdev,
    const float *pattern,
    uint count,
    double offset)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_fix_t *p = NULL;
    opvp_fix_t o;
    int i;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* pattern */
    if (count) {
        p = calloc(sizeof(opvp_fix_t), count);
        if (p) {
            for (i = 0; i < count; i++) {
                OPVP_F2FIX(pattern[i], p[i]);
            }
        } else {
            ecode = -1;
        }
    }

    /* call SetLineDash */
    if (!ecode) {
        if (apiEntry->opvpSetLineDash) {
            r = apiEntry->opvpSetLineDash(printerContext, count,p);
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    /* call SetLineDashOffset */
    if (!ecode) {
        OPVP_F2FIX(offset, o);
        if (apiEntry->opvpSetLineDashOffset) {
            r = apiEntry->opvpSetLineDashOffset(printerContext, o);
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    /* call SetLineStyle */
    if (!ecode) {
        if (apiEntry->opvpSetLineStyle) {
            r = apiEntry->opvpSetLineStyle(printerContext,
                                  (count ?
                                   OPVP_LINESTYLE_DASH :
                                   OPVP_LINESTYLE_SOLID));
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    if (p) free(p);

    return ecode;
}

/*
 * set flat
 */
static  int
opvp_setflat(gx_device_vector *vdev, double flatness)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    int ecode = 0;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* what to do ? */

    return ecode;
}

/*
 * set logical operation
 */
static  int
opvp_setlogop(
    gx_device_vector *vdev,
    gs_logical_operation_t lop,
    gs_logical_operation_t diff)
{
    /* nothing done */
    return 0;
}

#if GS_VERSION_MAJOR >= 8
/*--- added for Ghostscritp 8.15 ---*/
static int
opvp_can_handle_hl_color(gx_device_vector * vdev,
              const gs_imager_state * pis1, const gx_drawing_color * pdc)
{
    return false; /* High level color is not implemented yet. */
}
#endif

/*
 * set fill color
 */
#if GS_VERSION_MAJOR >= 8
static  int
opvp_setfillcolor(
    gx_device_vector *vdev,
    const gs_imager_state *pis, /* added for gs 8.15 */
    const gx_drawing_color *pdc)
#else
static  int
opvp_setfillcolor(gx_device_vector *vdev, const gx_drawing_color *pdc)
#endif
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    gx_color_index color;
    static opvp_brush_t brush;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    if (!gx_dc_is_pure(pdc)) return_error(gs_error_rangecheck);

    /* color */
    if (!vectorFillColor) vectorFillColor = &brush;
    color = gx_dc_pure_color(pdc);
    opvp_set_brush_color(pdev, color, vectorFillColor);

    /* call SetFillColor */
    if (apiEntry->opvpSetFillColor) {
        r = apiEntry->opvpSetFillColor(printerContext, vectorFillColor);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * set stroke color
 */
#if GS_VERSION_MAJOR >= 8
static  int
opvp_setstrokecolor(
    gx_device_vector *vdev,
    const gs_imager_state *pis, /* added for gs 8.15 */
    const gx_drawing_color *pdc)
#else
static  int
opvp_setstrokecolor(gx_device_vector *vdev, const gx_drawing_color *pdc)
#endif
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    gx_color_index color;
    opvp_brush_t brush;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    if (!gx_dc_is_pure(pdc)) return_error(gs_error_rangecheck);

    /* color */
    color = gx_dc_pure_color(pdc);
    opvp_set_brush_color(pdev, color, &brush);

    /* call SetStrokeColor */
    if (apiEntry->opvpSetStrokeColor) {
        r = apiEntry->opvpSetStrokeColor(printerContext, &brush);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

#define OPVP_OPT_MULTI_PATH

/*
 * vector do path
 */
static  int
opvp_vector_dopath(
    gx_device_vector *vdev,
    const gx_path *ppath,
    gx_path_type_t type,
    const gs_matrix *pmat)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int code = -1;
    int ecode = 0;
    gs_fixed_rect rect;
    gs_path_enum path;
    gs_point scale;
    int op;
#ifdef  OPVP_OPT_MULTI_PATH
    int i;
    int pop = 0;
    int npoints = 0;
    int *cp_num = NULL;
    _fPoint *points = NULL;
    opvp_point_t *opvp_p = NULL;
    _fPoint current;
#else
    _fPoint points[4];
#endif
    _fPoint start;
    fixed vs[6];
    bool begin = true;

    start.x = start.y = 0;
#ifdef  OPVP_OPT_MULTI_PATH
    current.x = current.y = 0;
#endif
    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    if (gx_path_is_rectangle(ppath, &rect))
    return (*vdev_proc(vdev, dorect))(vdev,
                                      rect.p.x, rect.p.y,
                                      rect.q.x, rect.q.y,
                                      type);

    /* begin path */
    code = (*vdev_proc(vdev, beginpath))(vdev, type);
    if (code) ecode = code;
    scale = vdev->scale;
    gx_path_enum_init(&path, ppath);

    while (!ecode) {
        op = gx_path_enum_next(&path, (gs_fixed_point *)vs);
        if (begin) {
            /* start point */
            start.x = fixed2float(vs[0]) / scale.x;
            start.y = fixed2float(vs[1]) / scale.y;
            begin = false;

#ifdef  OPVP_OPT_MULTI_PATH
            npoints = 1;
            points = realloc(points, sizeof(_fPoint));
            current = start;
#endif

            points[0] = start;

#ifdef  OPVP_OPT_MULTI_PATH
        } else if (op != pop) {
            /* convert float to Fix */
            opvp_p = realloc(opvp_p, sizeof(opvp_point_t) * npoints);
            for (i = 0; i < npoints; i++) {
                OPVP_F2FIX(points[i].x, opvp_p[i].x);
                OPVP_F2FIX(points[i].y, opvp_p[i].y);
            }

            switch (pop) {
            case gs_pe_moveto:
                /* call SetCurrentPoint */
                if (apiEntry->opvpSetCurrentPoint) {
                    r = apiEntry->opvpSetCurrentPoint(
                       printerContext,
                       opvp_p[npoints-1].x,
                       opvp_p[npoints-1].y);
                }
                if (r != OPVP_OK) ecode = -1;
                break;
            case gs_pe_lineto:
                /* call LinePath */
                if (apiEntry->opvpLinePath) {
                    r = apiEntry->opvpLinePath(
                       printerContext,
                       OPVP_PATHOPEN,
                       npoints - 1,
                       &(opvp_p[1]));
                }
                if (r != OPVP_OK) ecode = -1;
                break;
            case gs_pe_curveto:
                /* npoints */
                if (!cp_num)
                cp_num = calloc(sizeof(int), 2);
                cp_num[0] = npoints;
                cp_num[1] = 0;

                /* call BezierPath */
                if (apiEntry->opvpBezierPath) {
                    r = apiEntry->opvpBezierPath(
                       printerContext,
                       npoints - 1,
                       &(opvp_p[1])
                       );
                }
                if (r != OPVP_OK) ecode = -1;
                break;
            case gs_pe_closepath:
                    /* close path */
                    break;
            default:
                /* error */
                return_error(gs_error_unknownerror);
                break;
            }

            /* reset */
            npoints = 1;
            if (cp_num) free(cp_num), cp_num = NULL;
            points = realloc(points, sizeof(_fPoint));
            points[0] = current;
#endif
        }

        if (!op) break; /* END */

        switch (op) {
        case gs_pe_moveto:
#ifdef  OPVP_OPT_MULTI_PATH
            /* move to */
            i = npoints;
            npoints += 1;
            points = realloc(points, sizeof(_fPoint) * npoints);
            points[i].x = fixed2float(vs[0]) / scale.x;
            points[i].y = fixed2float(vs[1]) / scale.y;
            current = points[i];
            start = current;

#else

            /* move to */
            points[1].x = fixed2float(vs[0]) / scale.x;
            points[1].y = fixed2float(vs[1]) / scale.y;
            code = (*vdev_proc(vdev, moveto))(vdev,
                                              points[0].x,
                                              points[0].y,
                                              points[1].x,
                                              points[1].y,
                                              type);
            if (code) ecode = code;
            points[0] = points[1];
            start = points[0];
#endif
            break;
        case gs_pe_lineto:
#ifdef  OPVP_OPT_MULTI_PATH
            /* line to */
            i = npoints;
            npoints += 1;
            points = realloc(points, sizeof(_fPoint) * npoints);
            points[i].x = fixed2float(vs[0]) / scale.x;
            points[i].y = fixed2float(vs[1]) / scale.y;
            current = points[i];
#else
            /* line to */
            points[1].x = fixed2float(vs[0]) / scale.x;
            points[1].y = fixed2float(vs[1]) / scale.y;
            code = (*vdev_proc(vdev, lineto))(vdev,
                                              points[0].x,
                                              points[0].y,
                                              points[1].x,
                                              points[1].y,
                                              type);
            if (code) ecode = code;
            points[0] = points[1];
#endif
            break;
        case gs_pe_curveto:
#ifdef  OPVP_OPT_MULTI_PATH
            /* curve to */

            i = npoints;
            npoints += 3;
            points = realloc(points, sizeof(_fPoint) * npoints);
            points[i  ].x = fixed2float(vs[0]) / scale.x;
            points[i  ].y = fixed2float(vs[1]) / scale.y;
            points[i+1].x = fixed2float(vs[2]) / scale.x;
            points[i+1].y = fixed2float(vs[3]) / scale.y;
            points[i+2].x = fixed2float(vs[4]) / scale.x;
            points[i+2].y = fixed2float(vs[5]) / scale.y;
            current = points[i+2];
#else
            /* curve to */
            points[1].x = fixed2float(vs[0]) / scale.x;
            points[1].y = fixed2float(vs[1]) / scale.y;
            points[2].x = fixed2float(vs[2]) / scale.x;
            points[2].y = fixed2float(vs[3]) / scale.y;
            points[3].x = fixed2float(vs[4]) / scale.x;
            points[3].y = fixed2float(vs[5]) / scale.y;
            code = (*vdev_proc(vdev, curveto))(vdev,
                                               points[0].x,
                                               points[0].y,
                                               points[1].x,
                                               points[1].y,
                                               points[2].x,
                                               points[2].y,
                                               points[3].x,
                                               points[3].y,
                                               type);
            if (code) ecode = code;
            points[0] = points[3];
#endif
            break;
        case gs_pe_closepath:
            /* close path */
            code = (*vdev_proc(vdev, closepath))(
                       vdev,
                       points[0].x,
                       points[0].y,
                       start.x,
                       start.y,
                       type);
            if (code) ecode = code;
            points[0] = start;
#ifdef  OPVP_OPT_MULTI_PATH
            current = start;
#endif
            break;
        default:
            /* error */
            return_error(gs_error_unknownerror);
            break;
        }

#ifdef  OPVP_OPT_MULTI_PATH
        pop = op;
#endif
    }

    /* end path */
    code = (*vdev_proc(vdev, endpath))(vdev, type);
    if (code) ecode = code;

#ifdef  OPVP_OPT_MULTI_PATH
    if (points) free(points);
    if (opvp_p) free(opvp_p);
    if (cp_num) free(cp_num);
#endif
    return ecode;
}

/*
 * vector do rect
 */
static  int
opvp_vector_dorect(
    gx_device_vector *vdev,
    fixed x0,
    fixed y0,
    fixed x1,
    fixed y1,
    gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int code = -1;
    int ecode = 0;
    gs_point scale;
    opvp_rectangle_t rectangles[1];
    _fPoint p;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* begin path */
    code = (*vdev_proc(vdev, beginpath))(vdev, type);
    if (code) ecode = code;
    scale = vdev->scale;

    if (!ecode) {
        /* rectangle */
        p.x = fixed2float(x0) / scale.x;
        p.y = fixed2float(y0) / scale.y;
        OPVP_F2FIX(p.x, rectangles[0].p0.x);
        OPVP_F2FIX(p.y, rectangles[0].p0.y);
        p.x = fixed2float(x1) / scale.x;
        p.y = fixed2float(y1) / scale.y;
        OPVP_F2FIX(p.x, rectangles[0].p1.x);
        OPVP_F2FIX(p.y, rectangles[0].p1.y);

        /* call RectanglePath */
        if (apiEntry->opvpRectanglePath) {
            r = apiEntry->opvpRectanglePath(printerContext,
                                   1,
                                   rectangles);
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    /* end path */
    if (!ecode) {
        code = (*vdev_proc(vdev, endpath))(vdev, type);
        if (code) ecode = code;
    }

    /* fallback */
    if (ecode) return gdev_vector_dorect(vdev,x0,y0,x1,y1,type);

    return ecode;
}

/*
 * begin path
 */
static  int
opvp_beginpath(gx_device_vector *vdev, gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* check clip-path */
    if (type & gx_path_type_clip) {
        if (apiEntry->opvpResetClipPath)
        apiEntry->opvpResetClipPath(printerContext);
    }

    /* call NewPath */
    if (apiEntry->opvpNewPath) {
        r = apiEntry->opvpNewPath(printerContext);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * move to
 */
static  int
opvp_moveto(
    gx_device_vector *vdev,
    double x0,
    double y0,
    double x1,
    double y1,
    gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_point_t p;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* call SetCurrentPoint */
    OPVP_F2FIX(x1, p.x);
    OPVP_F2FIX(y1, p.y);
    if (apiEntry->opvpSetCurrentPoint) {
        r = apiEntry->opvpSetCurrentPoint(printerContext, p.x, p.y);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * line to
 */
static  int
opvp_lineto(
    gx_device_vector *vdev,
    double x0,
    double y0,
    double x1,
    double y1,
    gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_point_t points[1];

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* point */
    OPVP_F2FIX(x1, points[0].x);
    OPVP_F2FIX(y1, points[0].y);

    /* call LinePath */
    if (apiEntry->opvpLinePath) {
        r = apiEntry->opvpLinePath(printerContext, OPVP_PATHOPEN, 1, points);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * curve to
 */
static  int
opvp_curveto(
    gx_device_vector *vdev,
    double x0,
    double y0,
    double x1,
    double y1,
    double x2,
    double y2,
    double x3,
    double y3,
    gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_point_t points[4];

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* points */
    OPVP_F2FIX(x0, points[0].x);
    OPVP_F2FIX(y0, points[0].y);
    OPVP_F2FIX(x1, points[1].x);
    OPVP_F2FIX(y1, points[1].y);
    OPVP_F2FIX(x2, points[2].x);
    OPVP_F2FIX(y2, points[2].y);
    OPVP_F2FIX(x3, points[3].x);
    OPVP_F2FIX(y3, points[3].y);

    /* call BezierPath */
    if (apiEntry->opvpBezierPath) {
        r = apiEntry->opvpBezierPath(printerContext,
                            3,
                            &(points[1])
                            );
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * close path
 */
static  int
opvp_closepath(
    gx_device_vector *vdev,
    double x,
    double y,
    double x_start,
    double y_start,
    gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;
    opvp_point_t points[1];

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* point */
    OPVP_F2FIX(x_start, points[0].x);
    OPVP_F2FIX(y_start, points[0].y);

    /* call LinePath */
    if (apiEntry->opvpLinePath) {
        r = apiEntry->opvpLinePath(printerContext, OPVP_PATHCLOSE, 1, points);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    return ecode;
}

/*
 * end path
 */
static  int
opvp_endpath(gx_device_vector *vdev, gx_path_type_t type)
{
    gx_device_opvp *pdev = (gx_device_opvp *)vdev;
    opvp_result_t r = -1;
    int ecode = 0;

    /* check page-in */
    if (opvp_check_in_page(pdev)) return -1;

    /* call EndPath */
    if (apiEntry->opvpEndPath) {
        r = apiEntry->opvpEndPath(printerContext);
    }
    if (r != OPVP_OK) {
        ecode = -1;
    }

    if (type & gx_path_type_fill) {
        /* fill mode */
        if (type & gx_path_type_even_odd) {
            /* call SetFillMode */
            if (apiEntry->opvpSetFillMode) {
                r = apiEntry->opvpSetFillMode(
                   printerContext,
                   OPVP_FILLMODE_EVENODD
                );
            }
            if (r != OPVP_OK) {
                ecode = -1;
            }
        } else {
            /* call SetFillMode */
            if (apiEntry->opvpSetFillMode) {
                r = apiEntry->opvpSetFillMode(
                   printerContext,
                   OPVP_FILLMODE_WINDING
                );
            }
            if (r != OPVP_OK) {
                ecode = -1;
            }
        }

        if (type & gx_path_type_stroke) {
            /* call StrokeFillPath */
            if (apiEntry->opvpStrokeFillPath) {
                r = apiEntry->opvpStrokeFillPath(printerContext);
            }
            if (r != OPVP_OK) {
                ecode = -1;
            }
        } else {
            /* call FillPath */
            if (apiEntry->opvpFillPath) {
                r = apiEntry->opvpFillPath(printerContext);
            }
            if (r != OPVP_OK) {
                ecode = -1;
            }
        }
    } else if (type & gx_path_type_clip) {
        /* call SetClipPath */
        if (apiEntry->opvpSetClipPath) {
            r = apiEntry->opvpSetClipPath(
               printerContext,
               (type & gx_path_type_even_odd
                            ? OPVP_CLIPRULE_EVENODD
                            : OPVP_CLIPRULE_WINDING));
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    } else if (type & gx_path_type_stroke) {
        /* call StrokePath */
        if (apiEntry->opvpStrokePath) {
            r = apiEntry->opvpStrokePath(printerContext);
        }
        if (r != OPVP_OK) {
            ecode = -1;
        }
    }

    return ecode;
}
