mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
9beba05311
Unused since d74a8cb7e4.
Reviewed-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2006 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"
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/mem.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/ppc/util_altivec.h"
|
|
#include "libavcodec/fmtconvert.h"
|
|
|
|
#if HAVE_ALTIVEC
|
|
|
|
static void int32_to_float_fmul_scalar_altivec(float *dst, const int32_t *src,
|
|
float mul, int len)
|
|
{
|
|
union {
|
|
vector float v;
|
|
float s[4];
|
|
} mul_u;
|
|
int i;
|
|
vector float src1, src2, dst1, dst2, mul_v, zero;
|
|
|
|
zero = (vector float)vec_splat_u32(0);
|
|
mul_u.s[0] = mul;
|
|
mul_v = vec_splat(mul_u.v, 0);
|
|
|
|
for (i = 0; i < len; i += 8) {
|
|
src1 = vec_ctf(vec_ld(0, src+i), 0);
|
|
src2 = vec_ctf(vec_ld(16, src+i), 0);
|
|
dst1 = vec_madd(src1, mul_v, zero);
|
|
dst2 = vec_madd(src2, mul_v, zero);
|
|
vec_st(dst1, 0, dst+i);
|
|
vec_st(dst2, 16, dst+i);
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
av_cold void ff_fmt_convert_init_ppc(FmtConvertContext *c)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_altivec;
|
|
#endif /* HAVE_ALTIVEC */
|
|
}
|