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lossless_audiodsp.c
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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  do {
33  res += *v1 * *v2++;
34  *v1++ += mul * *v3++;
35  res += *v1 * *v2++;
36  *v1++ += mul * *v3++;
37  } while (order-=2);
38  return res;
39 }
40 
41 static int32_t scalarproduct_and_madd_int32_c(int16_t *v1, const int32_t *v2,
42  const int16_t *v3,
43  int order, int mul)
44 {
45  int res = 0;
46 
47  do {
48  res += *v1 * (uint32_t)*v2++;
49  *v1++ += mul * *v3++;
50  res += *v1 * (uint32_t)*v2++;
51  *v1++ += mul * *v3++;
52  } while (order-=2);
53  return res;
54 }
55 
57 {
60 
61  if (ARCH_ARM)
63  if (ARCH_PPC)
65  if (ARCH_X86)
67 }
av_cold void ff_llauddsp_init_arm(LLAudDSPContext *c)
#define av_cold
Definition: attributes.h:82
static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
int32_t
av_cold void ff_llauddsp_init(LLAudDSPContext *c)
int32_t(* scalarproduct_and_madd_int32)(int16_t *v1, const int32_t *v2, const int16_t *v3, int len, int mul)
Libavcodec external API header.
int32_t(* scalarproduct_and_madd_int16)(int16_t *v1, const int16_t *v2, const int16_t *v3, int len, int mul)
Calculate scalar product of v1 and v2, and v1[i] += v3[i] * mul.
static double c[64]
void ff_llauddsp_init_ppc(LLAudDSPContext *c)
void ff_llauddsp_init_x86(LLAudDSPContext *c)
static int32_t scalarproduct_and_madd_int32_c(int16_t *v1, const int32_t *v2, const int16_t *v3, int order, int mul)