2 * Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/attributes.h"
27 #include "libavutil/cpu.h"
28 #include "libavutil/ppc/cpu.h"
29 #include "libavutil/ppc/types_altivec.h"
30 #include "libavcodec/lossless_audiodsp.h"
33 static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1
,
39 vec_s16
*pv1
= (vec_s16
*) v1
;
40 register vec_s16 muls
= { mul
, mul
, mul
, mul
, mul
, mul
, mul
, mul
};
41 register vec_s16 t0
, t1
, i0
, i1
, i4
;
42 register vec_s16 i2
= vec_ld(0, v2
), i3
= vec_ld(0, v3
);
43 register vec_s32 res
= zero_s32v
;
44 register vec_u8 align
= vec_lvsl(0, v2
);
50 t0
= vec_perm(i2
, i1
, align
);
52 t1
= vec_perm(i1
, i2
, align
);
55 res
= vec_msum(t0
, i0
, res
);
56 res
= vec_msum(t1
, i1
, res
);
58 t0
= vec_perm(i3
, i4
, align
);
60 t1
= vec_perm(i4
, i3
, align
);
61 pv1
[0] = vec_mladd(t0
, muls
, i0
);
62 pv1
[1] = vec_mladd(t1
, muls
, i1
);
67 res
= vec_splat(vec_sums(res
, zero_s32v
), 3);
68 vec_ste(res
, 0, &ires
);
72 #endif /* HAVE_ALTIVEC */
74 av_cold
void ff_llauddsp_init_ppc(LLAudDSPContext
*c
)
77 if (!PPC_ALTIVEC(av_get_cpu_flags()))
80 c
->scalarproduct_and_madd_int16
= scalarproduct_and_madd_int16_altivec
;
81 #endif /* HAVE_ALTIVEC */