mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
94 lines
2.8 KiB
C
94 lines
2.8 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
|
|
*/
|
|
|
|
#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 "libavcodec/lossless_audiodsp.h"
|
|
|
|
#if HAVE_BIGENDIAN
|
|
#define GET_T(tt0,tt1,src,a,b){ \
|
|
a = vec_ld(16, src); \
|
|
tt0 = vec_perm(b, a, align); \
|
|
b = vec_ld(32, src); \
|
|
tt1 = vec_perm(a, b, align); \
|
|
}
|
|
#else
|
|
#define GET_T(tt0,tt1,src,a,b){ \
|
|
tt0 = vec_vsx_ld(0, src); \
|
|
tt1 = vec_vsx_ld(16, src); \
|
|
}
|
|
#endif
|
|
|
|
#if HAVE_ALTIVEC
|
|
static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1,
|
|
const int16_t *v2,
|
|
const int16_t *v3,
|
|
int order, int mul)
|
|
{
|
|
LOAD_ZERO;
|
|
vec_s16 *pv1 = (vec_s16 *) v1;
|
|
register vec_s16 muls = { mul, mul, mul, mul, mul, mul, mul, mul };
|
|
register vec_s16 t0, t1, i0, i1, i4, i2, i3;
|
|
register vec_s32 res = zero_s32v;
|
|
#if HAVE_BIGENDIAN
|
|
register vec_u8 align = vec_lvsl(0, v2);
|
|
i2 = vec_ld(0, v2);
|
|
i3 = vec_ld(0, v3);
|
|
#endif
|
|
int32_t ires;
|
|
|
|
order >>= 4;
|
|
do {
|
|
GET_T(t0,t1,v2,i1,i2);
|
|
i0 = pv1[0];
|
|
i1 = pv1[1];
|
|
res = vec_msum(t0, i0, res);
|
|
res = vec_msum(t1, i1, res);
|
|
GET_T(t0,t1,v3,i4,i3);
|
|
pv1[0] = vec_mladd(t0, muls, i0);
|
|
pv1[1] = vec_mladd(t1, muls, i1);
|
|
pv1 += 2;
|
|
v2 += 16;
|
|
v3 += 16;
|
|
} while (--order);
|
|
res = vec_splat(vec_sums(res, zero_s32v), 3);
|
|
vec_ste(res, 0, &ires);
|
|
|
|
return ires;
|
|
}
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
av_cold void ff_llauddsp_init_ppc(LLAudDSPContext *c)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_altivec;
|
|
#endif /* HAVE_ALTIVEC */
|
|
}
|