apps/codecs/libspeex/cb_search_arm4.h

   1 /* Copyright (C) 2004 Jean-Marc Valin */
   2 /**
   3    @file cb_search_arm4.h
   4    @brief Fixed codebook functions (ARM4 version)
   5 */
   6 /*
   7    Redistribution and use in source and binary forms, with or without
   8    modification, are permitted provided that the following conditions
   9    are met:
  10
  11    - Redistributions of source code must retain the above copyright
  12    notice, this list of conditions and the following disclaimer.
  13
  14    - Redistributions in binary form must reproduce the above copyright
  15    notice, this list of conditions and the following disclaimer in the
  16    documentation and/or other materials provided with the distribution.
  17
  18    - Neither the name of the Xiph.org Foundation nor the names of its
  19    contributors may be used to endorse or promote products derived from
  20    this software without specific prior written permission.
  21
  22    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25    A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
  26    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  27    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  28    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  29    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  30    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  31    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  32    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33 */
  34
  35 /* This optimization is temporaly disabled until it is fixed to account for the fact
  36    that "r" is now a 16-bit array */
  37 #if 0
  38 #define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
  39 static void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
  40 {
  41    int i, j, k;
  42   //const signed char *shape;
  43    for (i=0;i<shape_cb_size;i+=4)
  44    {
  45
  46       //shape = shape_cb;
  47       E[0]=0;
  48       E[1]=0;
  49       E[2]=0;
  50       E[3]=0;
  51
  52       /* Compute codeword response using convolution with impulse response */
  53       for(j=0;j<subvect_size;j++)
  54       {
  55 #if 1
  56           spx_word16_t *res;
  57           res = resp+j;
  58           spx_word32_t resj0,resj1,resj2,resj3;
  59           spx_word32_t dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8;
  60           __asm__ __volatile__ (
  61                 "mov %0, #0 \n\t"
  62                 "mov %1, #0 \n\t"
  63                 "mov %2, #0 \n\t"
  64                 "mov %3, #0 \n\t"
  65                 ".weighted%=: \n\t"
  66                 "ldrsb %8, [%6] \n\t"
  67                 "ldr %10, [%5], #-4 \n\t"
  68                 "mov %9, %6 \n\t"
  69                 "ldrsb %11, [%9, %7]! \n\t"
  70                 "mla %0, %10, %8, %0 \n\t"
  71                 "ldrsb %8, [%9, %7]! \n\t"
  72                 "mla %1, %10, %11, %1 \n\t"
  73                 "ldrsb %11, [%9, %7]! \n\t"
  74                 "mla %2, %10, %8, %2 \n\t"
  75                 "subs %4, %4, #1 \n\t"
  76                 "mla %3, %10, %11, %3 \n\t"
  77                 "add %6, %6, #1 \n\t"
  78                 "bne .weighted%= \n\t"
  79             : "=r" (resj0), "=r" (resj1), "=r" (resj2), "=r" (resj3),
  80           "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
  81           "=r" (dead5), "=r" (dead6), "=r" (dead7), "=r" (dead8)
  82             : "4" (j+1), "5" (r+j), "6" (shape_cb), "7" (subvect_size)
  83             : "cc", "memory");
  84 #else
  85           spx_word16_t *res;
  86           res = resp+j;
  87           spx_word32_t resj0=0;
  88           spx_word32_t resj1=0;
  89           spx_word32_t resj2=0;
  90           spx_word32_t resj3=0;
  91           for (k=0;k<=j;k++)
  92           {
  93              const signed char *shape=shape_cb+k;
  94              resj0 = MAC16_16(resj0,*shape,r[j-k]);
  95              shape += subvect_size;
  96              resj1 = MAC16_16(resj1,*shape,r[j-k]);
  97              shape += subvect_size;
  98              resj2 = MAC16_16(resj2,*shape,r[j-k]);
  99              shape += subvect_size;
 100              resj3 = MAC16_16(resj3,*shape,r[j-k]);
 101              shape += subvect_size;
 102           }
 103 #endif
 104
 105 #ifdef FIXED_POINT
 106           resj0 = SHR(resj0, 11);
 107           resj1 = SHR(resj1, 11);
 108           resj2 = SHR(resj2, 11);
 109           resj3 = SHR(resj3, 11);
 110 #else
 111           resj0 *= 0.03125;
 112           resj1 *= 0.03125;
 113           resj2 *= 0.03125;
 114           resj3 *= 0.03125;
 115 #endif
 116
 117           /* Compute codeword energy */
 118           E[0]=ADD32(E[0],MULT16_16(resj0,resj0));
 119           E[1]=ADD32(E[1],MULT16_16(resj1,resj1));
 120           E[2]=ADD32(E[2],MULT16_16(resj2,resj2));
 121           E[3]=ADD32(E[3],MULT16_16(resj3,resj3));
 122           *res = resj0;
 123           res += subvect_size;
 124           *res = resj1;
 125           res += subvect_size;
 126           *res = resj2;
 127           res += subvect_size;
 128           *res = resj3;
 129           res += subvect_size;
 130       }
 131       resp += subvect_size<<2;
 132       shape_cb += subvect_size<<2;
 133       E+=4;
 134    }
 135
 136 }
 137 #endif