Commit | Line | Data |
---|---|---|
2ba45a60 DM |
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 8, and arrays are 16-byte aligned */ | |
49 | void (*vector_clipf)(float *dst /* align 16 */, | |
50 | const float *src /* align 16 */, | |
51 | float min, float max, int len /* align 16 */); | |
52 | } AudioDSPContext; | |
53 | ||
54 | void ff_audiodsp_init(AudioDSPContext *c); | |
55 | void ff_audiodsp_init_arm(AudioDSPContext *c); | |
56 | void ff_audiodsp_init_ppc(AudioDSPContext *c); | |
57 | void ff_audiodsp_init_x86(AudioDSPContext *c); | |
58 | ||
59 | #endif /* AVCODEC_AUDIODSP_H */ |