mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-01-08 13:22:53 +02:00
5c7e9e16c9
* qatar/master: lavc: Move vector_fmul_window to AVFloatDSPContext rtpdec_mpeg4: Check the remaining amount of data before reading Conflicts: libavcodec/dsputil.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
83 lines
2.8 KiB
C
83 lines
2.8 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 "libavutil/ppc/util_altivec.h"
|
|
#include "libavcodec/dsputil.h"
|
|
|
|
#include "dsputil_altivec.h"
|
|
|
|
static void vector_fmul_reverse_altivec(float *dst, const float *src0,
|
|
const float *src1, int len)
|
|
{
|
|
int i;
|
|
vector float d, s0, s1, h0, l0,
|
|
s2, s3, zero = (vector float)vec_splat_u32(0);
|
|
src1 += len-4;
|
|
for(i=0; i<len-7; i+=8) {
|
|
s1 = vec_ld(0, src1-i); // [a,b,c,d]
|
|
s0 = vec_ld(0, src0+i);
|
|
l0 = vec_mergel(s1, s1); // [c,c,d,d]
|
|
s3 = vec_ld(-16, src1-i);
|
|
h0 = vec_mergeh(s1, s1); // [a,a,b,b]
|
|
s2 = vec_ld(16, src0+i);
|
|
s1 = vec_mergeh(vec_mergel(l0,h0), // [d,b,d,b]
|
|
vec_mergeh(l0,h0)); // [c,a,c,a]
|
|
// [d,c,b,a]
|
|
l0 = vec_mergel(s3, s3);
|
|
d = vec_madd(s0, s1, zero);
|
|
h0 = vec_mergeh(s3, s3);
|
|
vec_st(d, 0, dst+i);
|
|
s3 = vec_mergeh(vec_mergel(l0,h0),
|
|
vec_mergeh(l0,h0));
|
|
d = vec_madd(s2, s3, zero);
|
|
vec_st(d, 16, dst+i);
|
|
}
|
|
}
|
|
|
|
static void vector_fmul_add_altivec(float *dst, const float *src0,
|
|
const float *src1, const float *src2,
|
|
int len)
|
|
{
|
|
int i;
|
|
vector float d, s0, s1, s2, t0, t1, edges;
|
|
vector unsigned char align = vec_lvsr(0,dst),
|
|
mask = vec_lvsl(0, dst);
|
|
|
|
for (i=0; i<len-3; i+=4) {
|
|
t0 = vec_ld(0, dst+i);
|
|
t1 = vec_ld(15, dst+i);
|
|
s0 = vec_ld(0, src0+i);
|
|
s1 = vec_ld(0, src1+i);
|
|
s2 = vec_ld(0, src2+i);
|
|
edges = vec_perm(t1 ,t0, mask);
|
|
d = vec_madd(s0,s1,s2);
|
|
t1 = vec_perm(d, edges, align);
|
|
t0 = vec_perm(edges, d, align);
|
|
vec_st(t1, 15, dst+i);
|
|
vec_st(t0, 0, dst+i);
|
|
}
|
|
}
|
|
|
|
void ff_float_init_altivec(DSPContext* c, AVCodecContext *avctx)
|
|
{
|
|
c->vector_fmul_reverse = vector_fmul_reverse_altivec;
|
|
c->vector_fmul_add = vector_fmul_add_altivec;
|
|
}
|