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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-1.2.2/potracelib/bitmap.h')
-rw-r--r-- | Build/source/texk/dvisvgm/dvisvgm-1.2.2/potracelib/bitmap.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.2.2/potracelib/bitmap.h b/Build/source/texk/dvisvgm/dvisvgm-1.2.2/potracelib/bitmap.h deleted file mode 100644 index 1ce13d61e2d..00000000000 --- a/Build/source/texk/dvisvgm/dvisvgm-1.2.2/potracelib/bitmap.h +++ /dev/null @@ -1,97 +0,0 @@ -/* Copyright (C) 2001-2013 Peter Selinger. - This file is part of Potrace. It is free software and it is covered - by the GNU General Public License. See the file COPYING for details. */ - -#ifndef BITMAP_H -#define BITMAP_H - -#include <string.h> -#include <stdlib.h> - -/* The bitmap type is defined in potracelib.h */ -#include "potracelib.h" - -/* The present file defines some convenient macros and static inline - functions for accessing bitmaps. Since they only produce inline - code, they can be conveniently shared by the library and frontends, - if desired */ - -/* ---------------------------------------------------------------------- */ -/* some measurements */ - -#define BM_WORDSIZE ((int)sizeof(potrace_word)) -#define BM_WORDBITS (8*BM_WORDSIZE) -#define BM_HIBIT (((potrace_word)1)<<(BM_WORDBITS-1)) -#define BM_ALLBITS (~(potrace_word)0) - -/* macros for accessing pixel at index (x,y). U* macros omit the - bounds check. */ - -#define bm_scanline(bm, y) ((bm)->map + (y)*(bm)->dy) -#define bm_index(bm, x, y) (&bm_scanline(bm, y)[(x)/BM_WORDBITS]) -#define bm_mask(x) (BM_HIBIT >> ((x) & (BM_WORDBITS-1))) -#define bm_range(x, a) ((int)(x) >= 0 && (int)(x) < (a)) -#define bm_safe(bm, x, y) (bm_range(x, (bm)->w) && bm_range(y, (bm)->h)) -#define BM_UGET(bm, x, y) ((*bm_index(bm, x, y) & bm_mask(x)) != 0) -#define BM_USET(bm, x, y) (*bm_index(bm, x, y) |= bm_mask(x)) -#define BM_UCLR(bm, x, y) (*bm_index(bm, x, y) &= ~bm_mask(x)) -#define BM_UINV(bm, x, y) (*bm_index(bm, x, y) ^= bm_mask(x)) -#define BM_UPUT(bm, x, y, b) ((b) ? BM_USET(bm, x, y) : BM_UCLR(bm, x, y)) -#define BM_GET(bm, x, y) (bm_safe(bm, x, y) ? BM_UGET(bm, x, y) : 0) -#define BM_SET(bm, x, y) (bm_safe(bm, x, y) ? BM_USET(bm, x, y) : 0) -#define BM_CLR(bm, x, y) (bm_safe(bm, x, y) ? BM_UCLR(bm, x, y) : 0) -#define BM_INV(bm, x, y) (bm_safe(bm, x, y) ? BM_UINV(bm, x, y) : 0) -#define BM_PUT(bm, x, y, b) (bm_safe(bm, x, y) ? BM_UPUT(bm, x, y, b) : 0) - -/* free the given bitmap. Leaves errno untouched. */ -static inline void bm_free(potrace_bitmap_t *bm) { - if (bm) { - free(bm->map); - } - free(bm); -} - -/* return new un-initialized bitmap. NULL with errno on error */ -static inline potrace_bitmap_t *bm_new(int w, int h) { - potrace_bitmap_t *bm; - int dy = (w + BM_WORDBITS - 1) / BM_WORDBITS; - - bm = (potrace_bitmap_t *) malloc(sizeof(potrace_bitmap_t)); - if (!bm) { - return NULL; - } - bm->w = w; - bm->h = h; - bm->dy = dy; - bm->map = (potrace_word *) malloc(dy * h * BM_WORDSIZE); - if (!bm->map) { - free(bm); - return NULL; - } - return bm; -} - -/* clear the given bitmap. Set all bits to c. */ -static inline void bm_clear(potrace_bitmap_t *bm, int c) { - memset(bm->map, c ? -1 : 0, bm->dy * bm->h * BM_WORDSIZE); -} - -/* duplicate the given bitmap. Return NULL on error with errno set. */ -static inline potrace_bitmap_t *bm_dup(const potrace_bitmap_t *bm) { - potrace_bitmap_t *bm1 = bm_new(bm->w, bm->h); - if (!bm1) { - return NULL; - } - memcpy(bm1->map, bm->map, bm->dy * bm->h * BM_WORDSIZE); - return bm1; -} - -/* invert the given bitmap. */ -static inline void bm_invert(potrace_bitmap_t *bm) { - int i; - for (i = 0; i < bm->dy * bm->h; i++) { - bm->map[i] ^= BM_ALLBITS; - } -} - -#endif /* BITMAP_H */ |