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audiodsp.h
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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  */
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 */);
53 
58 
59 #endif /* AVCODEC_AUDIODSP_H */
void(* vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min, int32_t max, unsigned int len)
Clip each element in an array of int32_t to a given minimum and maximum value.
Definition: audiodsp.h:46
int32_t(* scalarproduct_int16)(const int16_t *v1, const int16_t *v2, int len)
Calculate scalar product of two vectors.
Definition: audiodsp.h:29
#define src
Definition: vp8dsp.c:254
void ff_audiodsp_init_ppc(AudioDSPContext *c)
Definition: audiodsp.c:64
void ff_audiodsp_init(AudioDSPContext *c)
Definition: audiodsp.c:106
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
int32_t
void(* vector_clipf)(float *dst, const float *src, float min, float max, int len)
Definition: audiodsp.h:49
void ff_audiodsp_init_arm(AudioDSPContext *c)
int len
static AVCodec * c
float min
void ff_audiodsp_init_x86(AudioDSPContext *c)
Definition: audiodsp_init.c:43