mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2026-11-06 05:17:42 +00:00
Patryk Darmofalski
d943d90925
vector_clip_int32 is based on the 32-bit ARM NEON version. Unrolling to 16 or 32 elements per iteration gave no measurable improvement over 8. vector_clipf applies fmin before fmaxnm, so any NaN input, including a signaling one, yields min as in C and as documented for av_clipf. checkasm --bench on Apple M4: vector_clip_int32_c: 1029.6 vector_clip_int32_neon: 180.7 ( 5.38x) vector_clipf_c: 682.9 vector_clipf_neon: 190.8 ( 3.34x) Signed-off-by: Patryk Darmofalski <darpat039@gmail.com>
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_AUDIODSP_H
|
|
#define AVCODEC_AUDIODSP_H
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef struct AudioDSPContext {
|
|
/**
|
|
* Calculate scalar product of two vectors.
|
|
* @param len length of vectors, should be multiple of 16
|
|
*/
|
|
int32_t (*scalarproduct_int16)(const int16_t *v1,
|
|
const int16_t *v2 /* align 16 */, int len);
|
|
|
|
/**
|
|
* Clip each element in an array of int32_t to a given minimum and
|
|
* maximum value.
|
|
* @param dst destination array
|
|
* constraints: 16-byte aligned
|
|
* @param src source array
|
|
* constraints: 16-byte aligned
|
|
* @param min minimum value
|
|
* constraints: must be in the range [-(1 << 24), 1 << 24]
|
|
* @param max maximum value
|
|
* constraints: must be in the range [-(1 << 24), 1 << 24]
|
|
* @param len number of elements in the array
|
|
* constraints: multiple of 32 greater than zero
|
|
*/
|
|
void (*vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min,
|
|
int32_t max, unsigned int len);
|
|
/* assume len is a multiple of 16, and arrays are 16-byte aligned */
|
|
void (*vector_clipf)(float *dst /* align 16 */,
|
|
const float *src /* align 16 */,
|
|
int len /* align 16 */,
|
|
float min, float max);
|
|
} AudioDSPContext;
|
|
|
|
void ff_audiodsp_init(AudioDSPContext *c);
|
|
void ff_audiodsp_init_aarch64(AudioDSPContext *c);
|
|
void ff_audiodsp_init_arm(AudioDSPContext *c);
|
|
void ff_audiodsp_init_ppc(AudioDSPContext *c);
|
|
void ff_audiodsp_init_riscv(AudioDSPContext *c);
|
|
void ff_audiodsp_init_x86(AudioDSPContext *c);
|
|
|
|
#endif /* AVCODEC_AUDIODSP_H */
|