1/*
2 * Monkey's Audio lossless audio decoder
3 * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org>
4 *  based upon libdemac from Dave Chapman.
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include "config.h"
24#include "libavutil/attributes.h"
25#include "lossless_audiodsp.h"
26
27static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2,
28                                              const int16_t *v3,
29                                              int order, int mul)
30{
31    unsigned res = 0;
32
33    do {
34        res   += *v1 * *v2++;
35        *v1++ += mul * *v3++;
36        res   += *v1 * *v2++;
37        *v1++ += mul * *v3++;
38    } while (order-=2);
39    return res;
40}
41
42static int32_t scalarproduct_and_madd_int32_c(int16_t *v1, const int32_t *v2,
43                                              const int16_t *v3,
44                                              int order, int mul)
45{
46    int res = 0;
47
48    do {
49        res   += *v1 * (uint32_t)*v2++;
50        *v1++ += mul * *v3++;
51        res   += *v1 * (uint32_t)*v2++;
52        *v1++ += mul * *v3++;
53    } while (order-=2);
54    return res;
55}
56
57av_cold void ff_llauddsp_init(LLAudDSPContext *c)
58{
59    c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c;
60    c->scalarproduct_and_madd_int32 = scalarproduct_and_madd_int32_c;
61
62#if ARCH_ARM
63    ff_llauddsp_init_arm(c);
64#elif ARCH_PPC
65    ff_llauddsp_init_ppc(c);
66#elif ARCH_X86
67    ff_llauddsp_init_x86(c);
68#endif
69}
70