174df6affc
* qatar/master: build: remove empty $(OBJS) target build: make rule for linking ff* apply only to these targets build: rearrange some lines in a more logical way s302m: fix resampling for 16 and 24bits. ARM: remove MUL64 and MAC64 inline asm build: clean up .PHONY lists build: move all (un)install* target aliases to toplevel Makefile flvenc: propagate error properly build: remove stale dependency build: do not add CFLAGS-yes to CFLAGS utils.c: fix crash with threading enabled. configure: simplify source_path setup configure: remove --source-path option lavf: deprecate AVFormatParameters.time_base. img2: add framerate private option. img2: add video_size private option. img2: add pixel_format private option. tty: add framerate private option. Conflicts: Makefile configure Merged-by: Michael Niedermayer <michaelni@gmx.at>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
|
|
* 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 */
|