File: gdevtifs.h

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/* Copyright (C) 2001-2006 Artifex Software, Inc.
   All Rights Reserved.
  
   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied, modified
   or distributed except as expressly authorized under the terms of that
   license.  Refer to licensing information at http://www.artifex.com/
   or contact Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134,
   San Rafael, CA  94903, U.S.A., +1(415)492-9861, for further information.
*/

/* $Id: gdevtifs.h 10710 2010-02-04 17:47:57Z larsu $ */
/* Definitions for writing TIFF file formats. */

#ifndef gdevtifs_INCLUDED
#  define gdevtifs_INCLUDED

#include <tiffio.h>	/* must be first, because gdevio.h re-#defines "printf"
			   which is used in a function __attribute__ by
			   tiffio.h */
#include "gdevprn.h"

/* ================ Implementation ================ */

typedef struct gx_device_tiff_s {
    gx_device_common;
    gx_prn_device_common;
    bool  BigEndian;            /* true = big endian; false = little endian*/
    uint16 Compression;		/* same values as TIFFTAG_COMPRESSION */
    long MaxStripSize;
    TIFF *tif;			/* TIFF file opened on gx_device_common.file */
} gx_device_tiff;

dev_proc_output_page(tiff_output_page);
dev_proc_open_device(tiff_open);
dev_proc_close_device(tiff_close);
dev_proc_get_params(tiff_get_params);
dev_proc_put_params(tiff_put_params);

/*
 * Open a TIFF file for writing from a file descriptor.
 */
TIFF * tiff_from_filep(const char *name, FILE *filep, int big_endian);

int tiff_print_page(gx_device_printer *dev, TIFF *tif);

/*
 * Sets the compression tag for TIFF and updates the rows_per_strip tag to
 * reflect max_strip_size under the new compression scheme.
 */
#define TIFF_DEFAULT_STRIP_SIZE 1048576

int tiff_set_compression(gx_device_printer *pdev,
			 TIFF *tif,
			 uint compression,
			 long max_strip_size);

int tiff_set_fields_for_printer(gx_device_printer *pdev, TIFF *tif);

int gdev_tiff_begin_page(gx_device_tiff *tfdev, FILE *file);

/*
 * Returns the gs_param_string that corresponds to the tiff COMPRESSION_* id.
 */
int tiff_compression_param_string(gs_param_string *param, uint16 id);

/*
 * Returns the COMPRESSION_* id which corresponds to 'str'.
 */
int tiff_compression_id(uint16 *id, gs_param_string *param);

/*
 * Returns true if 'compression' can be used for encoding a data with a bit
 * depth of 'depth'  (crle, g3, and g4 only work on 1-bit devices).
 */
int tiff_compression_allowed(uint16 compression, byte depth);

#endif /* gdevtifs_INCLUDED */