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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 "avcodec.h" | |
24 | #include "lossless_audiodsp.h" | |
25 | ||
26 | static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2, | |
27 | const int16_t *v3, | |
28 | int order, int mul) | |
29 | { | |
30 | int res = 0; | |
31 | ||
32 | while (order--) { | |
33 | res += *v1 * *v2++; | |
34 | *v1++ += mul * *v3++; | |
35 | } | |
36 | return res; | |
37 | } | |
38 | ||
39 | av_cold void ff_llauddsp_init(LLAudDSPContext *c) | |
40 | { | |
41 | c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c; | |
42 | ||
43 | if (ARCH_ARM) | |
44 | ff_llauddsp_init_arm(c); | |
45 | if (ARCH_PPC) | |
46 | ff_llauddsp_init_ppc(c); | |
47 | if (ARCH_X86) | |
48 | ff_llauddsp_init_x86(c); | |
49 | } |