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100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_FLOAT_DSP_H
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#define AVUTIL_FLOAT_DSP_H
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typedef struct AVFloatDSPContext {
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/**
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* Calculate the product of two vectors of floats and store the result in
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* a vector of floats.
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*
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* @param dst output vector
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* constraints: 32-byte aligned
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* @param src0 first input vector
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* constraints: 32-byte aligned
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* @param src1 second input vector
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* constraints: 32-byte aligned
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* @param len number of elements in the input
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* constraints: multiple of 16
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*/
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void (*vector_fmul)(float *dst, const float *src0, const float *src1,
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int len);
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/**
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* Multiply a vector of floats by a scalar float and add to
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* destination vector. Source and destination vectors must
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* overlap exactly or not at all.
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*
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* @param dst result vector
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* constraints: 32-byte aligned
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* @param src input vector
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* constraints: 32-byte aligned
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* @param mul scalar value
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* @param len length of vector
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* constraints: multiple of 16
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*/
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void (*vector_fmac_scalar)(float *dst, const float *src, float mul,
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int len);
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/**
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* Multiply a vector of floats by a scalar float. Source and
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* destination vectors must overlap exactly or not at all.
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*
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* @param dst result vector
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* constraints: 16-byte aligned
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* @param src input vector
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* constraints: 16-byte aligned
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* @param mul scalar value
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* @param len length of vector
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* constraints: multiple of 4
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*/
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void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
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int len);
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/**
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* Multiply a vector of double by a scalar double. Source and
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* destination vectors must overlap exactly or not at all.
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*
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* @param dst result vector
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* constraints: 32-byte aligned
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* @param src input vector
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* constraints: 32-byte aligned
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* @param mul scalar value
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* @param len length of vector
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* constraints: multiple of 8
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*/
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void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
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int len);
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} AVFloatDSPContext;
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/**
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* Initialize a float DSP context.
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*
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* @param fdsp float DSP context
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* @param strict setting to non-zero avoids using functions which may not be IEEE-754 compliant
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*/
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void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int strict);
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void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp);
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void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict);
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void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp);
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#endif /* AVUTIL_FLOAT_DSP_H */
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