/usr/include/mupdf/fitz/bitmap.h is in libmupdf-dev 1.7a-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | #ifndef MUPDF_FITZ_BITMAP_H
#define MUPDF_FITZ_BITMAP_H
#include "mupdf/fitz/system.h"
#include "mupdf/fitz/context.h"
#include "mupdf/fitz/pixmap.h"
/*
Bitmaps have 1 bit per component. Only used for creating halftoned
versions of contone buffers, and saving out. Samples are stored msb
first, akin to pbms.
*/
typedef struct fz_bitmap_s fz_bitmap;
/*
fz_keep_bitmap: Take a reference to a bitmap.
bit: The bitmap to increment the reference for.
Returns bit. Does not throw exceptions.
*/
fz_bitmap *fz_keep_bitmap(fz_context *ctx, fz_bitmap *bit);
/*
fz_drop_bitmap: Drop a reference and free a bitmap.
Decrement the reference count for the bitmap. When no
references remain the pixmap will be freed.
Does not throw exceptions.
*/
void fz_drop_bitmap(fz_context *ctx, fz_bitmap *bit);
/*
A halftone is a set of threshold tiles, one per component. Each
threshold tile is a pixmap, possibly of varying sizes and phases.
Currently, we only provide one 'default' halftone tile for operating
on 1 component plus alpha pixmaps (where the alpha is ignored). This
is signified by an fz_halftone pointer to NULL.
*/
typedef struct fz_halftone_s fz_halftone;
/*
fz_halftone_pixmap: Make a bitmap from a pixmap and a halftone.
pix: The pixmap to generate from. Currently must be a single color
component + alpha (where the alpha is assumed to be solid).
ht: The halftone to use. NULL implies the default halftone.
Returns the resultant bitmap. Throws exceptions in the case of
failure to allocate.
*/
fz_bitmap *fz_halftone_pixmap(fz_context *ctx, fz_pixmap *pix, fz_halftone *ht);
struct fz_bitmap_s
{
int refs;
int w, h, stride, n;
int xres, yres;
unsigned char *samples;
};
fz_bitmap *fz_new_bitmap(fz_context *ctx, int w, int h, int n, int xres, int yres);
void fz_bitmap_details(fz_bitmap *bitmap, int *w, int *h, int *n, int *stride);
void fz_clear_bitmap(fz_context *ctx, fz_bitmap *bit);
struct fz_halftone_s
{
int refs;
int n;
fz_pixmap *comp[1];
};
fz_halftone *fz_new_halftone(fz_context *ctx, int num_comps);
fz_halftone *fz_default_halftone(fz_context *ctx, int num_comps);
void fz_drop_halftone(fz_context *ctx, fz_halftone *half);
fz_halftone *fz_keep_halftone(fz_context *ctx, fz_halftone *half);
#endif
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