FFmpeg/libavcodec/ppc/audiodsp.c
Michael Niedermayer 99497b4683 Merge commit '9a9e2f1c8aa4539a261625145e5c1f46a8106ac2'
* commit '9a9e2f1c8aa4539a261625145e5c1f46a8106ac2':
  dsputil: Split audio operations off into a separate context

Conflicts:
	configure
	libavcodec/takdec.c
	libavcodec/x86/Makefile
	libavcodec/x86/dsputil.asm
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/dsputil_mmx.c
	libavcodec/x86/dsputil_x86.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-22 17:58:28 +02:00

73 lines
1.9 KiB
C

/*
* Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org>
*
* 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
*/
/**
* @file
* miscellaneous audio operations
*/
#include "config.h"
#if HAVE_ALTIVEC_H
#include <altivec.h>
#endif
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/ppc/cpu.h"
#include "libavutil/ppc/types_altivec.h"
#include "libavutil/ppc/util_altivec.h"
#include "libavcodec/audiodsp.h"
#if HAVE_ALTIVEC
static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2,
int order)
{
int i;
LOAD_ZERO;
register vec_s16 vec1;
register vec_s32 res = vec_splat_s32(0), t;
int32_t ires;
for (i = 0; i < order; i += 8) {
vec1 = vec_unaligned_load(v1);
t = vec_msum(vec1, vec_ld(0, v2), zero_s32v);
res = vec_sums(t, res);
v1 += 8;
v2 += 8;
}
res = vec_splat(res, 3);
vec_ste(res, 0, &ires);
return ires;
}
#endif /* HAVE_ALTIVEC */
av_cold void ff_audiodsp_init_ppc(AudioDSPContext *c)
{
#if HAVE_ALTIVEC
if (!PPC_ALTIVEC(av_get_cpu_flags()))
return;
c->scalarproduct_int16 = scalarproduct_int16_altivec;
#endif /* HAVE_ALTIVEC */
}