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libavcodec
ppc
int_altivec.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* miscellaneous integer operations
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*/
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#include "config.h"
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#if HAVE_ALTIVEC_H
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#include <altivec.h>
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#endif
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#include "
libavutil/attributes.h
"
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#include "
libavutil/ppc/types_altivec.h
"
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#include "
libavutil/ppc/util_altivec.h
"
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#include "
libavcodec/dsputil.h
"
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#include "
dsputil_altivec.h
"
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static
int32_t
scalarproduct_int16_altivec
(
const
int16_t *v1,
const
int16_t *v2,
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int
order)
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{
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int
i;
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LOAD_ZERO
;
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register
vec_s16
vec1;
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register
vec_s32
res = vec_splat_s32(0),
t
;
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int32_t
ires;
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for
(i = 0; i < order; i += 8) {
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vec1 = vec_unaligned_load(v1);
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t
= vec_msum(vec1, vec_ld(0, v2),
zero_s32v
);
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res = vec_sums(
t
, res);
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v1 += 8;
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v2 += 8;
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}
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res = vec_splat(res, 3);
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vec_ste(res, 0, &ires);
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return
ires;
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}
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av_cold
void
ff_int_init_altivec
(
DSPContext
*
c
,
AVCodecContext
*avctx)
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{
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c->
scalarproduct_int16
=
scalarproduct_int16_altivec
;
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}
Generated on Sat Jun 21 2014 19:21:08 for FFmpeg by
1.8.2