mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
1.8 KiB
75 lines
1.8 KiB
/* |
|
* simple math operations |
|
* Copyright (c) 2001, 2002 Fabrice Bellard. |
|
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg 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 |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
#ifndef MATHOPS_H |
|
#define MATHOPS_H |
|
|
|
#include "common.h" |
|
|
|
#ifdef ARCH_X86_32 |
|
|
|
#include "i386/mathops.h" |
|
|
|
#elif defined(ARCH_ARMV4L) |
|
|
|
#include "armv4l/mathops.h" |
|
|
|
#elif defined(ARCH_PPC) |
|
|
|
#include "ppc/mathops.h" |
|
|
|
#elif defined(ARCH_BFIN) |
|
|
|
#include "bfin/mathops.h" |
|
|
|
#endif |
|
|
|
/* generic implementation */ |
|
|
|
#ifndef MULL |
|
# define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS) |
|
#endif |
|
|
|
#ifndef MULH |
|
//gcc 3.4 creates an incredibly bloated mess out of this |
|
//# define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32) |
|
|
|
static av_always_inline int MULH(int a, int b){ |
|
return ((int64_t)(a) * (int64_t)(b))>>32; |
|
} |
|
#endif |
|
|
|
#ifndef MUL64 |
|
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b)) |
|
#endif |
|
|
|
/* signed 16x16 -> 32 multiply add accumulate */ |
|
#ifndef MAC16 |
|
# define MAC16(rt, ra, rb) rt += (ra) * (rb) |
|
#endif |
|
|
|
/* signed 16x16 -> 32 multiply */ |
|
#ifndef MUL16 |
|
# define MUL16(ra, rb) ((ra) * (rb)) |
|
#endif |
|
|
|
#endif //MATHOPS_H |
|
|
|
|