2 * This file is part of FFmpeg.
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.
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.
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
19 #ifndef AVCODEC_AUDIODSP_H
20 #define AVCODEC_AUDIODSP_H
24 typedef struct AudioDSPContext
{
26 * Calculate scalar product of two vectors.
27 * @param len length of vectors, should be multiple of 16
29 int32_t (*scalarproduct_int16
)(const int16_t *v1
,
30 const int16_t *v2
/* align 16 */, int len
);
33 * Clip each element in an array of int32_t to a given minimum and
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
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 */);
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
);
59 #endif /* AVCODEC_AUDIODSP_H */