mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-15 03:34:56 +00:00
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/*
|
|
* 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 AVCODEC_MATHOPS_H
|
|
#define AVCODEC_MATHOPS_H
|
|
|
|
#include "libavutil/common.h"
|
|
|
|
#ifdef ARCH_X86_32
|
|
|
|
#include "x86/mathops.h"
|
|
|
|
#elif defined(ARCH_ARM)
|
|
|
|
#include "arm/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,s) (((int64_t)(a) * (int64_t)(b)) >> (s))
|
|
#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
|
|
|
|
#ifndef MAC64
|
|
# define MAC64(d, a, b) ((d) += MUL64(a, b))
|
|
#endif
|
|
|
|
#ifndef MLS64
|
|
# define MLS64(d, a, b) ((d) -= MUL64(a, 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
|
|
|
|
#ifndef MLS16
|
|
# define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb))
|
|
#endif
|
|
|
|
#endif /* AVCODEC_MATHOPS_H */
|
|
|