/*

  * 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 AVUTIL_FLOAT_DSP_H
 #define AVUTIL_FLOAT_DSP_H
 

 #include "config.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);

 
     /**
      * Overlap/add with window function.
      * Used primarily by MDCT-based audio codecs.
      * Source and destination vectors must overlap exactly or not at all.
      *
      * @param dst  result vector
      *             constraints: 16-byte aligned
      * @param src0 first source vector
      *             constraints: 16-byte aligned
      * @param src1 second source vector
      *             constraints: 16-byte aligned
      * @param win  half-window vector
      *             constraints: 16-byte aligned
      * @param len  length of vector
      *             constraints: multiple of 4
      */
     void (*vector_fmul_window)(float *dst, const float *src0,
                                const float *src1, const float *win, int len);

 
     /**
      * Calculate the product of two vectors of floats, add a third vector 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 src2 third input vector

      *             constraints: 32-byte aligned
      * @param len  number of elements in the input
      *             constraints: multiple of 16
      */
     void (*vector_fmul_add)(float *dst, const float *src0, const float *src1,
                             const float *src2, int len);

 
     /**
      * Calculate the product of two vectors of floats, and store the result
      * in a vector of floats. The second vector of floats is iterated over
      * in reverse order.
      *
      * @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_reverse)(float *dst, const float *src0,
                                 const float *src1, int len);

 
     /**
      * Calculate the sum and difference of two vectors of floats.
      *
      * @param v1  first input vector, sum output, 16-byte aligned
      * @param v2  second input vector, difference output, 16-byte aligned
      * @param len length of vectors, multiple of 4
      */

     void (*butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len);

 
     /**
      * Calculate the scalar product of two vectors of floats.
      *
      * @param v1  first vector, 16-byte aligned
      * @param v2  second vector, 16-byte aligned
      * @param len length of vectors, multiple of 4
      *
      * @return sum of elementwise products
      */
     float (*scalarproduct_float)(const float *v1, const float *v2, int len);

 } AVFloatDSPContext;
 
 /**

  * Return the scalar product of two vectors.
  *
  * @param v1  first input vector
  * @param v2  first input vector
  * @param len number of elements
  *
  * @return sum of elementwise products
  */
 float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len);
 
 /**

  * 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_aarch64(AVFloatDSPContext *fdsp);

 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);

 void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp);

 /**
  * Allocate a float DSP context.
  *
  * @param strict  setting to non-zero avoids using functions which may not be IEEE-754 compliant
  */
 AVFloatDSPContext *avpriv_float_dsp_alloc(int strict);
 

 #endif /* AVUTIL_FLOAT_DSP_H */