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/*
* libgimpprint header.
*
* Copyright 1997-2000 Michael Sweet (mike@easysw.com) and
* Robert Krawitz (rlk@alum.mit.edu)
*
* 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, see <https://www.gnu.org/licenses/>.
*
* Revision History:
*
* See ChangeLog
*/
/**
* @file gutenprint/weave.h
* @brief Softweave functions.
*/
/*
* This file must include only standard C header files. The core code must
* compile on generic platforms that don't support glib, gimp, gtk, etc.
*/
#ifndef GUTENPRINT_WEAVE_H
#define GUTENPRINT_WEAVE_H
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define STP_MAX_WEAVE (16)
typedef struct /* Weave parameters for a specific row */
{
int row; /* Absolute row # */
int pass; /* Computed pass # */
int jet; /* Which physical nozzle we're using */
int missingstartrows; /* Phantom rows (nonexistent rows that */
/* would be printed by nozzles lower than */
/* the first nozzle we're using this pass; */
/* with the current algorithm, always zero */
int logicalpassstart; /* Offset in rows (from start of image) */
/* that the printer must be for this row */
/* to print correctly with the specified jet */
int physpassstart; /* Offset in rows to the first row printed */
/* in this pass. Currently always equal to */
/* logicalpassstart */
int physpassend; /* Offset in rows (from start of image) to */
/* the last row that will be printed this */
/* pass (assuming that we're printing a full */
/* pass). */
} stp_weave_t;
typedef struct /* Weave parameters for a specific pass */
{
int pass; /* Absolute pass number */
int missingstartrows; /* All other values the same as weave_t */
int logicalpassstart;
int physpassstart;
int physpassend;
int subpass;
} stp_pass_t;
typedef struct { /* Offsets from the start of each line */
int ncolors;
unsigned long *v; /* (really pass) */
} stp_lineoff_t;
typedef struct { /* Is this line (really pass) active? */
int ncolors;
char *v;
} stp_lineactive_t;
typedef struct { /* number of rows for a pass */
int ncolors;
int *v;
} stp_linecount_t;
typedef struct { /* Base pointers for each pass */
int ncolors;
unsigned char **v;
} stp_linebufs_t;
typedef struct { /* Width of data actually printed */
int ncolors;
int *start_pos;
int *end_pos;
} stp_linebounds_t;
typedef enum {
STP_WEAVE_ZIGZAG,
STP_WEAVE_ASCENDING,
STP_WEAVE_DESCENDING,
STP_WEAVE_ASCENDING_2X,
STP_WEAVE_STAGGERED,
STP_WEAVE_ASCENDING_3X
} stp_weave_strategy_t;
typedef int stp_packfunc(stp_vars_t *v,
const unsigned char *line, int height,
unsigned char *comp_buf,
unsigned char **comp_ptr,
int *first, int *last);
typedef void stp_fillfunc(stp_vars_t *v, int row, int subpass,
int width, int missingstartrows, int color);
typedef void stp_flushfunc(stp_vars_t *v, int passno, int vertical_subpass);
typedef int stp_compute_linewidth_func(stp_vars_t *v, int n);
extern void stp_initialize_weave(stp_vars_t *v, int jets, int separation,
int oversample, int horizontal,
int vertical, int ncolors, int bitwidth,
int linewidth, int line_count,
int first_line, int page_height,
const int *head_offset,
stp_weave_strategy_t,
stp_flushfunc,
stp_fillfunc,
stp_packfunc,
stp_compute_linewidth_func);
extern stp_packfunc stp_pack_tiff;
extern stp_packfunc stp_pack_uncompressed;
extern stp_fillfunc stp_fill_tiff;
extern stp_fillfunc stp_fill_uncompressed;
extern stp_compute_linewidth_func stp_compute_tiff_linewidth;
extern stp_compute_linewidth_func stp_compute_uncompressed_linewidth;
extern void stp_flush_all(stp_vars_t *v);
extern void
stp_write_weave(stp_vars_t *v, unsigned char *const cols[]);
extern stp_lineoff_t *
stp_get_lineoffsets_by_pass(const stp_vars_t *v, int pass);
extern stp_lineactive_t *
stp_get_lineactive_by_pass(const stp_vars_t *v, int pass);
extern stp_linecount_t *
stp_get_linecount_by_pass(const stp_vars_t *v, int pass);
extern const stp_linebufs_t *
stp_get_linebases_by_pass(const stp_vars_t *v, int pass);
extern stp_pass_t *
stp_get_pass_by_pass(const stp_vars_t *v, int pass);
extern void
stp_weave_parameters_by_row(const stp_vars_t *v, int row,
int vertical_subpass, stp_weave_t *w);
#ifdef __cplusplus
}
#endif
#endif /* GUTENPRINT_WEAVE_H */
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