/*
  * Format Conversion Utils
  * Copyright (c) 2000, 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * 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_FMTCONVERT_H
 #define AVCODEC_FMTCONVERT_H
 
 #include "avcodec.h"
 
 typedef struct FmtConvertContext {
     /**
      * Convert an array of int32_t to float and multiply by a float value.
      * @param dst destination array of float.
      *            constraints: 16-byte aligned
      * @param src source array of int32_t.
      *            constraints: 16-byte aligned
      * @param len number of elements to convert.
      *            constraints: multiple of 8
      */
     void (*int32_to_float_fmul_scalar)(float *dst, const int *src, float mul, int len);
 
     /**
      * Convert an array of float to an array of int16_t.
      *
      * Convert floats from in the range [-32768.0,32767.0] to ints
      * without rescaling
      *
      * @param dst destination array of int16_t.
      *            constraints: 16-byte aligned
      * @param src source array of float.
      *            constraints: 16-byte aligned
      * @param len number of elements to convert.
      *            constraints: multiple of 8
      */
     void (*float_to_int16)(int16_t *dst, const float *src, long len);
 
     /**
      * Convert multiple arrays of float to an interleaved array of int16_t.
      *
      * Convert floats from in the range [-32768.0,32767.0] to ints
      * without rescaling
      *
      * @param dst destination array of interleaved int16_t.
      *            constraints: 16-byte aligned
      * @param src source array of float arrays, one for each channel.
      *            constraints: 16-byte aligned
      * @param len number of elements to convert.
      *            constraints: multiple of 8
      * @param channels number of channels
      */
     void (*float_to_int16_interleave)(int16_t *dst, const float **src,
                                       long len, int channels);

 
     /**

      * Convert multiple arrays of float to an array of interleaved float.
      *
      * @param dst destination array of interleaved float.
      *            constraints: 16-byte aligned
      * @param src source array of float arrays, one for each channel.
      *            constraints: 16-byte aligned
      * @param len number of elements to convert.
      *            constraints: multiple of 8
      * @param channels number of channels

      */
     void (*float_interleave)(float *dst, const float **src, unsigned int len,
                              int channels);

 } FmtConvertContext;
 

 void ff_float_interleave_c(float *dst, const float **src, unsigned int len,
                            int channels);
 

 av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx);

 
 void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_altivec(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx);

 void ff_fmt_convert_init_mips(FmtConvertContext *c);

 /* ffdshow custom code */
 void float_interleave(float *dst, const float **src, long len, int channels);
 void float_interleave_noscale(float *dst, const float **src, long len, int channels);
 

 #endif /* AVCODEC_FMTCONVERT_H */