func: void dsputil_init_arm(DSPContext* c, AVCodecContext *avctx)
  
  {
  
      int idct_algo= avctx->idct_algo;
  
  
  
      ff_put_pixels_clamped = c->put_pixels_clamped;
  
      ff_add_pixels_clamped = c->add_pixels_clamped;
  
  
  
      if (avctx->lowres == 0) {
  
          if(idct_algo == FF_IDCT_AUTO){
  
  #if   HAVE_IPP
  
              idct_algo = FF_IDCT_IPP;
  
  #elif HAVE_NEON
  
              idct_algo = FF_IDCT_SIMPLENEON;
  
  #elif HAVE_ARMV6
  
              idct_algo = FF_IDCT_SIMPLEARMV6;
  
  #elif HAVE_ARMV5TE
  
              idct_algo = FF_IDCT_SIMPLEARMV5TE;
  
  #else
  
              idct_algo = FF_IDCT_ARM;
  
  #endif
  
          }
  
  
  
          if(idct_algo==FF_IDCT_ARM){
  
              c->idct_put= j_rev_dct_ARM_put;
  
              c->idct_add= j_rev_dct_ARM_add;
  
              c->idct    = j_rev_dct_ARM;
  
              c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
  
          } else if (idct_algo==FF_IDCT_SIMPLEARM){
  
              c->idct_put= simple_idct_ARM_put;
  
              c->idct_add= simple_idct_ARM_add;
  
              c->idct    = simple_idct_ARM;
  
              c->idct_permutation_type= FF_NO_IDCT_PERM;
  
  #if HAVE_ARMV6
  
          } else if (idct_algo==FF_IDCT_SIMPLEARMV6){
  
              c->idct_put= ff_simple_idct_put_armv6;
  
              c->idct_add= ff_simple_idct_add_armv6;
  
              c->idct    = ff_simple_idct_armv6;
  
              c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
  
  #endif
  
  #if HAVE_ARMV5TE
  
          } else if (idct_algo==FF_IDCT_SIMPLEARMV5TE){
  
              c->idct_put= simple_idct_put_armv5te;
  
              c->idct_add= simple_idct_add_armv5te;
  
              c->idct    = simple_idct_armv5te;
  
              c->idct_permutation_type = FF_NO_IDCT_PERM;
  
  #endif
  
  #if HAVE_IPP
  
          } else if (idct_algo==FF_IDCT_IPP){
  
              c->idct_put= simple_idct_ipp_put;
  
              c->idct_add= simple_idct_ipp_add;
  
              c->idct    = simple_idct_ipp;
  
              c->idct_permutation_type= FF_NO_IDCT_PERM;
  
  #endif
  
  #if HAVE_NEON
  
          } else if (idct_algo==FF_IDCT_SIMPLENEON){
  
              c->idct_put= ff_simple_idct_put_neon;
  
              c->idct_add= ff_simple_idct_add_neon;
  
              c->idct    = ff_simple_idct_neon;
  
              c->idct_permutation_type = FF_PARTTRANS_IDCT_PERM;
  
          } else if ((CONFIG_VP3_DECODER || CONFIG_VP5_DECODER || CONFIG_VP6_DECODER || CONFIG_THEORA_DECODER) &&
  
                     idct_algo==FF_IDCT_VP3){
  
              c->idct_put= ff_vp3_idct_put_neon;
  
              c->idct_add= ff_vp3_idct_add_neon;
  
              c->idct    = ff_vp3_idct_neon;
  
              c->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM;
  
  #endif
  
          }
  
      }
  
  
  
      c->put_pixels_tab[0][0] = put_pixels16_arm;
  
      c->put_pixels_tab[0][1] = put_pixels16_x2_arm;
  
      c->put_pixels_tab[0][2] = put_pixels16_y2_arm;
  
      c->put_pixels_tab[0][3] = put_pixels16_xy2_arm;
  
      c->put_no_rnd_pixels_tab[0][0] = put_pixels16_arm;
  
      c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_arm;
  
      c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_arm;
  
      c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_arm;
  
      c->put_pixels_tab[1][0] = put_pixels8_arm;
  
      c->put_pixels_tab[1][1] = put_pixels8_x2_arm;
  
      c->put_pixels_tab[1][2] = put_pixels8_y2_arm;
  
      c->put_pixels_tab[1][3] = put_pixels8_xy2_arm;
  
      c->put_no_rnd_pixels_tab[1][0] = put_pixels8_arm;
  
      c->put_no_rnd_pixels_tab[1][1] = put_no_rnd_pixels8_x2_arm;
  
      c->put_no_rnd_pixels_tab[1][2] = put_no_rnd_pixels8_y2_arm;
  
      c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_arm;
  
  
  
  #if HAVE_ARMV5TE
  
      c->prefetch = ff_prefetch_arm;
  
  #endif
  
  
  
  #if HAVE_IWMMXT
  
      dsputil_init_iwmmxt(c, avctx);
  
  #endif
  
  #if HAVE_ARMVFP
  
      ff_float_init_arm_vfp(c, avctx);
  
  #endif
  
  #if HAVE_NEON
  
      ff_dsputil_init_neon(c, avctx);
  
  #endif
  
  }
  