aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
*
* 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_MIPS_MATHOPS_H
#define AVCODEC_MIPS_MATHOPS_H
#include <stdint.h>
#include "config.h"
#include "libavutil/common.h"
#if HAVE_INLINE_ASM
#if HAVE_LOONGSON3
#define MULH MULH
static inline av_const int MULH(int a, int b)
{
int c;
__asm__ ("dmult %1, %2 \n\t"
"mflo %0 \n\t"
"dsrl %0, %0, 32 \n\t"
: "=r"(c)
: "r"(a),"r"(b)
: "hi", "lo");
return c;
}
#define mid_pred mid_pred
static inline av_const int mid_pred(int a, int b, int c)
{
int t = b;
__asm__ ("sgt $8, %1, %2 \n\t"
"movn %0, %1, $8 \n\t"
"movn %1, %2, $8 \n\t"
"sgt $8, %1, %3 \n\t"
"movz %1, %3, $8 \n\t"
"sgt $8, %0, %1 \n\t"
"movn %0, %1, $8 \n\t"
: "+&r"(t),"+&r"(a)
: "r"(b),"r"(c)
: "$8");
return t;
}
#endif /* HAVE_LOONGSON3 */
#endif /* HAVE_INLINE_ASM */
#endif /* AVCODEC_MIPS_MATHOPS_H */
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