blob: aa6fa7898b5133dc02972e2409d7ea9d2855cee7
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
4 | * FFmpeg is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * FFmpeg is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with FFmpeg; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
18 | |
19 | #ifndef AVCODEC_AUDIODSP_H |
20 | #define AVCODEC_AUDIODSP_H |
21 | |
22 | #include <stdint.h> |
23 | |
24 | typedef struct AudioDSPContext { |
25 | /** |
26 | * Calculate scalar product of two vectors. |
27 | * @param len length of vectors, should be multiple of 16 |
28 | */ |
29 | int32_t (*scalarproduct_int16)(const int16_t *v1, |
30 | const int16_t *v2 /* align 16 */, int len); |
31 | |
32 | /** |
33 | * Clip each element in an array of int32_t to a given minimum and |
34 | * maximum value. |
35 | * @param dst destination array |
36 | * constraints: 16-byte aligned |
37 | * @param src source array |
38 | * constraints: 16-byte aligned |
39 | * @param min minimum value |
40 | * constraints: must be in the range [-(1 << 24), 1 << 24] |
41 | * @param max maximum value |
42 | * constraints: must be in the range [-(1 << 24), 1 << 24] |
43 | * @param len number of elements in the array |
44 | * constraints: multiple of 32 greater than zero |
45 | */ |
46 | void (*vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min, |
47 | int32_t max, unsigned int len); |
48 | /* assume len is a multiple of 16, and arrays are 16-byte aligned */ |
49 | void (*vector_clipf)(float *dst /* align 16 */, |
50 | const float *src /* align 16 */, |
51 | int len /* align 16 */, |
52 | float min, float max); |
53 | } AudioDSPContext; |
54 | |
55 | void ff_audiodsp_init(AudioDSPContext *c); |
56 | void ff_audiodsp_init_arm(AudioDSPContext *c); |
57 | void ff_audiodsp_init_ppc(AudioDSPContext *c); |
58 | void ff_audiodsp_init_x86(AudioDSPContext *c); |
59 | |
60 | #endif /* AVCODEC_AUDIODSP_H */ |
61 |