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/* Copyright (C) 2004 Jean-Marc Valin */
/**
@file cb_search_arm4.h
@brief Fixed codebook functions (ARM4 version)
*/
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of the Xiph.org Foundation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* This optimization is temporaly disabled until it is fixed to account for the fact
that "r" is now a 16-bit array */
#if 0
#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
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)
{
int i, j, k;
//const signed char *shape;
for (i=0;i<shape_cb_size;i+=4)
{
//shape = shape_cb;
E[0]=0;
E[1]=0;
E[2]=0;
E[3]=0;
/* Compute codeword response using convolution with impulse response */
for(j=0;j<subvect_size;j++)
{
#if 1
spx_word16_t *res;
res = resp+j;
spx_word32_t resj0,resj1,resj2,resj3;
spx_word32_t dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8;
__asm__ __volatile__ (
"mov %0, #0 \n\t"
"mov %1, #0 \n\t"
"mov %2, #0 \n\t"
"mov %3, #0 \n\t"
".weighted%=: \n\t"
"ldrsb %8, [%6] \n\t"
"ldr %10, [%5], #-4 \n\t"
"mov %9, %6 \n\t"
"ldrsb %11, [%9, %7]! \n\t"
"mla %0, %10, %8, %0 \n\t"
"ldrsb %8, [%9, %7]! \n\t"
"mla %1, %10, %11, %1 \n\t"
"ldrsb %11, [%9, %7]! \n\t"
"mla %2, %10, %8, %2 \n\t"
"subs %4, %4, #1 \n\t"
"mla %3, %10, %11, %3 \n\t"
"add %6, %6, #1 \n\t"
"bne .weighted%= \n\t"
: "=r" (resj0), "=r" (resj1), "=r" (resj2), "=r" (resj3),
"=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
"=r" (dead5), "=r" (dead6), "=r" (dead7), "=r" (dead8)
: "4" (j+1), "5" (r+j), "6" (shape_cb), "7" (subvect_size)
: "cc", "memory");
#else
spx_word16_t *res;
res = resp+j;
spx_word32_t resj0=0;
spx_word32_t resj1=0;
spx_word32_t resj2=0;
spx_word32_t resj3=0;
for (k=0;k<=j;k++)
{
const signed char *shape=shape_cb+k;
resj0 = MAC16_16(resj0,*shape,r[j-k]);
shape += subvect_size;
resj1 = MAC16_16(resj1,*shape,r[j-k]);
shape += subvect_size;
resj2 = MAC16_16(resj2,*shape,r[j-k]);
shape += subvect_size;
resj3 = MAC16_16(resj3,*shape,r[j-k]);
shape += subvect_size;
}
#endif
#ifdef FIXED_POINT
resj0 = SHR(resj0, 11);
resj1 = SHR(resj1, 11);
resj2 = SHR(resj2, 11);
resj3 = SHR(resj3, 11);
#else
resj0 *= 0.03125;
resj1 *= 0.03125;
resj2 *= 0.03125;
resj3 *= 0.03125;
#endif
/* Compute codeword energy */
E[0]=ADD32(E[0],MULT16_16(resj0,resj0));
E[1]=ADD32(E[1],MULT16_16(resj1,resj1));
E[2]=ADD32(E[2],MULT16_16(resj2,resj2));
E[3]=ADD32(E[3],MULT16_16(resj3,resj3));
*res = resj0;
res += subvect_size;
*res = resj1;
res += subvect_size;
*res = resj2;
res += subvect_size;
*res = resj3;
res += subvect_size;
}
resp += subvect_size<<2;
shape_cb += subvect_size<<2;
E+=4;
}
}
#endif
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