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.
81 lines
2.1 KiB
81 lines
2.1 KiB
/* |
|
* simple math operations |
|
* 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_ARM_MATHOPS_H |
|
#define AVCODEC_ARM_MATHOPS_H |
|
|
|
#include <stdint.h> |
|
#include "config.h" |
|
#include "libavutil/common.h" |
|
|
|
#if HAVE_INLINE_ASM |
|
|
|
#if HAVE_ARMV6 |
|
#define MULH MULH |
|
static inline av_const int MULH(int a, int b) |
|
{ |
|
int r; |
|
__asm__ ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); |
|
return r; |
|
} |
|
#endif |
|
|
|
#define MLS64(d, a, b) MAC64(d, -(a), b) |
|
|
|
#if HAVE_ARMV5TE |
|
|
|
/* signed 16x16 -> 32 multiply add accumulate */ |
|
# define MAC16(rt, ra, rb) \ |
|
__asm__ ("smlabb %0, %1, %2, %0" : "+r"(rt) : "r"(ra), "r"(rb)); |
|
|
|
/* signed 16x16 -> 32 multiply */ |
|
# define MUL16 MUL16 |
|
static inline av_const int MUL16(int ra, int rb) |
|
{ |
|
int rt; |
|
__asm__ ("smulbb %0, %1, %2" : "=r"(rt) : "r"(ra), "r"(rb)); |
|
return rt; |
|
} |
|
|
|
#endif |
|
|
|
#define mid_pred mid_pred |
|
static inline av_const int mid_pred(int a, int b, int c) |
|
{ |
|
int m; |
|
__asm__ ( |
|
"mov %0, %2 \n\t" |
|
"cmp %1, %2 \n\t" |
|
"movgt %0, %1 \n\t" |
|
"movgt %1, %2 \n\t" |
|
"cmp %1, %3 \n\t" |
|
"movle %1, %3 \n\t" |
|
"cmp %0, %1 \n\t" |
|
"movgt %0, %1 \n\t" |
|
: "=&r"(m), "+r"(a) |
|
: "r"(b), "r"(c) |
|
: "cc"); |
|
return m; |
|
} |
|
|
|
#endif /* HAVE_INLINE_ASM */ |
|
|
|
#endif /* AVCODEC_ARM_MATHOPS_H */
|
|
|