mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 08:42:39 +00:00
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_FLOAT_DSP_H
|
|
#define AVUTIL_FLOAT_DSP_H
|
|
|
|
typedef struct AVFloatDSPContext {
|
|
/**
|
|
* Calculate the product of two vectors of floats and store the result in
|
|
* a vector of floats.
|
|
*
|
|
* @param dst output vector
|
|
* constraints: 32-byte aligned
|
|
* @param src0 first input vector
|
|
* constraints: 32-byte aligned
|
|
* @param src1 second input vector
|
|
* constraints: 32-byte aligned
|
|
* @param len number of elements in the input
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmul)(float *dst, const float *src0, const float *src1,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of floats by a scalar float and add to
|
|
* destination vector. Source and destination vectors must
|
|
* overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 32-byte aligned
|
|
* @param src input vector
|
|
* constraints: 32-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 16
|
|
*/
|
|
void (*vector_fmac_scalar)(float *dst, const float *src, float mul,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of floats by a scalar float. Source and
|
|
* destination vectors must overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 16-byte aligned
|
|
* @param src input vector
|
|
* constraints: 16-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 4
|
|
*/
|
|
void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
|
|
int len);
|
|
|
|
/**
|
|
* Multiply a vector of double by a scalar double. Source and
|
|
* destination vectors must overlap exactly or not at all.
|
|
*
|
|
* @param dst result vector
|
|
* constraints: 32-byte aligned
|
|
* @param src input vector
|
|
* constraints: 32-byte aligned
|
|
* @param mul scalar value
|
|
* @param len length of vector
|
|
* constraints: multiple of 8
|
|
*/
|
|
void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
|
|
int len);
|
|
} AVFloatDSPContext;
|
|
|
|
/**
|
|
* Initialize a float DSP context.
|
|
*
|
|
* @param fdsp float DSP context
|
|
* @param strict setting to non-zero avoids using functions which may not be IEEE-754 compliant
|
|
*/
|
|
void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int strict);
|
|
|
|
|
|
void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp);
|
|
void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict);
|
|
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp);
|
|
|
|
#endif /* AVUTIL_FLOAT_DSP_H */
|