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  1. /*
  2.  * Monkey's Audio lossless audio decoder
  3.  * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org>
  4.  *  based upon libdemac from Dave Chapman.
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #include "avcodec.h"
  24. #include "lossless_audiodsp.h"
  25.  
  26. static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2,
  27.                                               const int16_t *v3,
  28.                                               int order, int mul)
  29. {
  30.     int res = 0;
  31.  
  32.     while (order--) {
  33.         res   += *v1 * *v2++;
  34.         *v1++ += mul * *v3++;
  35.     }
  36.     return res;
  37. }
  38.  
  39. av_cold void ff_llauddsp_init(LLAudDSPContext *c)
  40. {
  41.     c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c;
  42.  
  43.     if (ARCH_ARM)
  44.         ff_llauddsp_init_arm(c);
  45.     if (ARCH_PPC)
  46.         ff_llauddsp_init_ppc(c);
  47.     if (ARCH_X86)
  48.         ff_llauddsp_init_x86(c);
  49. }
  50.