mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
New single instruction math operation header
Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Barbato
parent
39e1b5cf8e
commit
99aed7c8fc
47
libavcodec/armv4l/mathops.h
Normal file
47
libavcodec/armv4l/mathops.h
Normal file
@ -0,0 +1,47 @@
|
||||
/*
|
||||
* simple math operations
|
||||
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
|
||||
*
|
||||
* This library 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 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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 this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifdef FRAC_BITS
|
||||
# define MULL(a, b) \
|
||||
({ int lo, hi;\
|
||||
asm("smull %0, %1, %2, %3 \n\t"\
|
||||
"mov %0, %0, lsr %4\n\t"\
|
||||
"add %1, %0, %1, lsl %5\n\t"\
|
||||
: "=&r"(lo), "=&r"(hi)\
|
||||
: "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
|
||||
hi; })
|
||||
#endif
|
||||
|
||||
#define MULH(a, b) \
|
||||
({ int lo, hi;\
|
||||
asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
|
||||
hi; })
|
||||
|
||||
#if defined(HAVE_ARMV5TE)
|
||||
|
||||
/* signed 16x16 -> 32 multiply add accumulate */
|
||||
# define MAC16(rt, ra, rb) \
|
||||
asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
|
||||
/* signed 16x16 -> 32 multiply */
|
||||
# define MUL16(ra, rb) \
|
||||
({ int __rt;\
|
||||
asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
|
||||
__rt; })
|
||||
|
||||
#endif
|
||||
39
libavcodec/i386/mathops.h
Normal file
39
libavcodec/i386/mathops.h
Normal file
@ -0,0 +1,39 @@
|
||||
/*
|
||||
* simple math operations
|
||||
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
|
||||
*
|
||||
* This library 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 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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 this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifdef FRAC_BITS
|
||||
# define MULL(ra, rb) \
|
||||
({ int rt, dummy; asm (\
|
||||
"imull %3 \n\t"\
|
||||
"shrdl %4, %%edx, %%eax \n\t"\
|
||||
: "=a"(rt), "=d"(dummy)\
|
||||
: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
|
||||
rt; })
|
||||
#endif
|
||||
|
||||
#define MULH(ra, rb) \
|
||||
({ int rt, dummy;\
|
||||
asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb));\
|
||||
rt; })
|
||||
|
||||
#define MUL64(ra, rb) \
|
||||
({ int64_t rt;\
|
||||
asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb));\
|
||||
rt; })
|
||||
|
||||
67
libavcodec/mathops.h
Normal file
67
libavcodec/mathops.h
Normal file
@ -0,0 +1,67 @@
|
||||
/*
|
||||
* simple math operations
|
||||
* Copyright (c) 2001, 2002 Fabrice Bellard.
|
||||
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
|
||||
*
|
||||
* This library 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 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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 this library; 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
|
||||
|
||||
#ifdef ARCH_X86
|
||||
|
||||
#include "i386/mathops.h"
|
||||
|
||||
#elif defined(ARCH_ARMV4L)
|
||||
|
||||
#include "armv4l/mathops.h"
|
||||
|
||||
#elif defined(ARCH_PPC)
|
||||
|
||||
#include "ppc/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 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
|
||||
|
||||
31
libavcodec/ppc/mathops.h
Normal file
31
libavcodec/ppc/mathops.h
Normal file
@ -0,0 +1,31 @@
|
||||
/*
|
||||
* simple math operations
|
||||
* Copyright (c) 2001, 2002 Fabrice Bellard.
|
||||
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
|
||||
*
|
||||
* This library 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 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library 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 this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#if defined(ARCH_POWERPC_405)
|
||||
/* signed 16x16 -> 32 multiply add accumulate */
|
||||
# define MAC16(rt, ra, rb) \
|
||||
asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
|
||||
|
||||
/* signed 16x16 -> 32 multiply */
|
||||
# define MUL16(ra, rb) \
|
||||
({ int __rt;
|
||||
asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
|
||||
__rt; })
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user