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 */