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Diffstat (limited to 'source/blender/blenlib/intern/bitmap.c')
-rw-r--r-- | source/blender/blenlib/intern/bitmap.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/bitmap.c b/source/blender/blenlib/intern/bitmap.c new file mode 100644 index 00000000000..fab8b3dedf6 --- /dev/null +++ b/source/blender/blenlib/intern/bitmap.c @@ -0,0 +1,75 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2012 by Nicholas Bishop + * All rights reserved. + * + * The Original Code is: all of this file. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/blenlib/intern/bitmap.c + * \ingroup bli + * + * Utility functions for variable size bitmasks. + */ + +#include <string.h> +#include <limits.h> + +#include "BLI_utildefines.h" +#include "BLI_bitmap.h" + +/** Set or clear all bits in the bitmap. */ +void BLI_bitmap_set_all(BLI_bitmap *bitmap, bool set, size_t bits) +{ + memset(bitmap, set ? UCHAR_MAX : 0, BLI_BITMAP_SIZE(bits)); +} + +/** Invert all bits in the bitmap. */ +void BLI_bitmap_flip_all(BLI_bitmap *bitmap, size_t bits) +{ + size_t num_blocks = _BITMAP_NUM_BLOCKS(bits); + for (size_t i = 0; i < num_blocks; i++) { + bitmap[i] ^= ~(BLI_bitmap)0; + } +} + +/** Copy all bits from one bitmap to another. */ +void BLI_bitmap_copy_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits) +{ + memcpy(dst, src, BLI_BITMAP_SIZE(bits)); +} + +/** Combine two bitmaps with boolean AND. */ +void BLI_bitmap_and_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits) +{ + size_t num_blocks = _BITMAP_NUM_BLOCKS(bits); + for (size_t i = 0; i < num_blocks; i++) { + dst[i] &= src[i]; + } +} + +/** Combine two bitmaps with boolean OR. */ +void BLI_bitmap_or_all(BLI_bitmap *dst, const BLI_bitmap *src, size_t bits) +{ + size_t num_blocks = _BITMAP_NUM_BLOCKS(bits); + for (size_t i = 0; i < num_blocks; i++) { + dst[i] |= src[i]; + } +} |