/*
  * Copyright (c) 2004 Gildas Bazin
  * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
  *
  * 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
  */
 

 #include "config.h"

 #include "dcadsp.h"
 
 static void dca_lfe_fir_c(float *out, const float *in, const float *coefs,

                           int decifactor, float scale)

 {
     float *out2 = out + decifactor;
     const float *cf0 = coefs;
     const float *cf1 = coefs + 256;
     int j, k;
 
     /* One decimated sample generates 2*decifactor interpolated ones */
     for (k = 0; k < decifactor; k++) {
         float v0 = 0.0;
         float v1 = 0.0;
         for (j = 0; j < 256 / decifactor; j++) {
             float s = in[-j];
             v0 += s * *cf0++;
             v1 += s * *--cf1;
         }

         *out++  = v0 * scale;
         *out2++ = v1 * scale;

     }
 }
 
 void ff_dcadsp_init(DCADSPContext *s)
 {
     s->lfe_fir = dca_lfe_fir_c;

     if (ARCH_ARM) ff_dcadsp_init_arm(s);

 }