bitblt.h

Thu, 13 Mar 2003 07:59:10 +0000

author
eric
date
Thu, 13 Mar 2003 07:59:10 +0000
changeset 121
e50c7f76f2f6
parent 109
663da96ad2bc
child 125
e2ef1c2f9eca
permissions
-rw-r--r--

don't use page mode USE_OUTLINES if there are no outline entries.

     1 /*
     2  * t2p: Create a PDF file from the contents of one or more TIFF
     3  *      bilevel image files.  The images in the resulting PDF file
     4  *      will be compressed using ITU-T T.6 (G4) fax encoding.
     5  *
     6  * bitblt routines
     7  * $Id: bitblt.h,v 1.16 2003/03/12 02:59:09 eric Exp $
     8  * Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
     9  *
    10  * This program is free software; you can redistribute it and/or modify
    11  * it under the terms of the GNU General Public License version 2 as
    12  * published by the Free Software Foundation.  Note that permission is
    13  * not granted to redistribute this program under the terms of any
    14  * other version of the General Public License.
    15  *
    16  * This program is distributed in the hope that it will be useful,
    17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    19  * GNU General Public License for more details.
    20  *
    21  * You should have received a copy of the GNU General Public License
    22  * along with this program; if not, write to the Free Software
    23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
    24  */
    27 typedef struct Point
    28 {
    29   int32_t x;
    30   int32_t y;
    31 } Point;
    33 typedef struct Rect
    34 {
    35   Point min;
    36   Point max;
    37 } Rect;
    39 static inline int32_t rect_width (Rect *r)
    40 {
    41   return (r->max.x - r->min.x);
    42 }
    44 static inline int32_t rect_height (Rect *r)
    45 {
    46   return (r->max.y - r->min.y);
    47 }
    50 /* word_t should be the largest native type that can be handled
    51    efficiently, so it shouldn't be a 64-bit type on a processor that
    52    doesn't have native 64-bit operations. */
    53 typedef uint32_t word_t;
    54 #define BITS_PER_WORD (8 * sizeof (word_t))
    55 #define ALL_ONES (~ 0UL)
    58 typedef struct Bitmap
    59 {
    60   word_t *bits;
    61   Rect rect;
    62   uint32_t row_words;
    63 } Bitmap;
    66 #define TF_SRC 0xc
    67 #define TF_AND 0x8
    68 #define TF_OR  0xe
    69 #define TF_XOR 0x6
    72 void bitblt_init (void);
    75 Bitmap *create_bitmap (Rect *rect);
    76 void free_bitmap (Bitmap *bitmap);
    78 bool get_pixel (Bitmap *bitmap, Point coord);
    79 void set_pixel (Bitmap *bitmap, Point coord, bool value);
    82 Bitmap *bitblt (Bitmap *src_bitmap,
    83 		Rect   *src_rect,
    84 		Bitmap *dest_bitmap,
    85 		Point  *dest_min,
    86 		int tfn,
    87 		int background);
    90 /* in-place transformations */
    91 void flip_h (Bitmap *src);
    92 void flip_v (Bitmap *src);
    94 void rot_180 (Bitmap *src);  /* combination of flip_h and flip_v */
    96 /* "in-place" transformations - will allocate new memory and free old */
    97 void transpose (Bitmap *src);
    99 void rot_90 (Bitmap *src);   /* transpose + flip_h */
   100 void rot_270 (Bitmap *src);  /* transpose + flip_v */
   103 void reverse_bits (uint8_t *p, int byte_count);
   106 void bitblt_write_g4 (Bitmap *bitmap, FILE *f);