pstoraster/gxband.h

   1 /* Copyright (C) 1997, 1998 Aladdin Enterprises.  All rights reserved.
   2
   3   This file is part of GNU Ghostscript.
   4
   5   GNU Ghostscript is distributed in the hope that it will be useful, but
   6   WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
   7   to anyone for the consequences of using it or for whether it serves any
   8   particular purpose or works at all, unless he says so in writing.  Refer
   9   to the GNU General Public License for full details.
  10
  11   Everyone is granted permission to copy, modify and redistribute GNU
  12   Ghostscript, but only under the conditions described in the GNU General
  13   Public License.  A copy of this license is supposed to have been given
  14   to you along with GNU Ghostscript so you can know your rights and
  15   responsibilities.  It should be in a file named COPYING.  Among other
  16   things, the copyright notice and this notice must be preserved on all
  17   copies.
  18
  19   Aladdin Enterprises supports the work of the GNU Project, but is not
  20   affiliated with the Free Software Foundation or the GNU Project.  GNU
  21   Ghostscript, as distributed by Aladdin Enterprises, does not require any
  22   GNU software to build or run it.
  23 */
  24
  25 /*$Id$ */
  26 /* Band-processing parameters for Ghostscript */
  27
  28 #ifndef gxband_INCLUDED
  29 #  define gxband_INCLUDED
  30
  31 #include "gxclio.h"
  32
  33 /*
  34  * Define the parameters controlling banding.
  35  */
  36 typedef struct gx_band_params_s {
  37     int BandWidth;              /* (optional) band width in pixels */
  38     int BandHeight;             /* (optional) */
  39     long BandBufferSpace;       /* (optional) */
  40 } gx_band_params;
  41
  42 #define band_params_initial_values 0, 0, 0
  43
  44 /*
  45  * Define the information for a saved page.
  46  */
  47 typedef struct gx_band_page_info_s {
  48     char cfname[gp_file_name_sizeof];   /* command file name */
  49     clist_file_ptr cfile;       /* command file, normally 0 */
  50     char bfname[gp_file_name_sizeof];   /* block file name */
  51     clist_file_ptr bfile;       /* block file, normally 0 */
  52     uint tile_cache_size;       /* size of tile cache */
  53     long bfile_end_pos;         /* ftell at end of bfile */
  54     gx_band_params band_params; /* parameters used when writing band list */
  55                                 /* (actual values, no 0s) */
  56 } gx_band_page_info;
  57
  58 /*
  59  * By convention, the structure member containing the above is called
  60  * page_info.  Define shorthand accessors for its members.
  61  */
  62 #define page_cfile page_info.cfile
  63 #define page_cfname page_info.cfname
  64 #define page_bfile page_info.bfile
  65 #define page_bfname page_info.bfname
  66 #define page_tile_cache_size page_info.tile_cache_size
  67 #define page_bfile_end_pos page_info.bfile_end_pos
  68 #define page_band_height page_info.band_params.BandHeight
  69
  70 #endif /* ndef gxband_INCLUDED */