bitmap.h

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// Copyright (C) 2004-2025 Artifex Software, Inc.
//
// This file is part of MuPDF.
//
// MuPDF is free software: you can redistribute it and/or modify it under the
// terms of the GNU Affero General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// MuPDF 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 Affero General Public License for more
// details.
//
// You should have received a copy of the GNU Affero General Public License
// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
//
// Alternative licensing terms are available from the licensor.
// For commercial licensing, see <https://www.artifex.com/> or contact
// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
// CA 94129, USA, for further information.
 
#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"

typedef struct
{
    int refs;
    int w, h, stride, n;
    int xres, yres;
    unsigned char *samples;
} fz_bitmap;

fz_bitmap *fz_keep_bitmap(fz_context *ctx, fz_bitmap *bit);

void fz_drop_bitmap(fz_context *ctx, fz_bitmap *bit);

void fz_invert_bitmap(fz_context *ctx, fz_bitmap *bmp);

typedef struct fz_halftone fz_halftone;

fz_bitmap *fz_new_bitmap_from_pixmap(fz_context *ctx, fz_pixmap *pix, fz_halftone *ht);

fz_bitmap *fz_new_bitmap_from_image(fz_context *ctx, fz_image *img, fz_halftone *ht);

fz_bitmap *fz_new_bitmap_from_pixmap_band(fz_context *ctx, fz_pixmap *pix, fz_halftone *ht, int band_start);

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);

fz_halftone *fz_default_halftone(fz_context *ctx, int num_comps);

fz_halftone *fz_keep_halftone(fz_context *ctx, fz_halftone *half);

void fz_drop_halftone(fz_context *ctx, fz_halftone *ht);
 
#endif