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 24typedef 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 55void ff_audiodsp_init(AudioDSPContext *c); 56void ff_audiodsp_init_arm(AudioDSPContext *c); 57void ff_audiodsp_init_ppc(AudioDSPContext *c); 58void ff_audiodsp_init_x86(AudioDSPContext *c); 59 60#endif /* AVCODEC_AUDIODSP_H */ 61