You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
4.9 KiB
137 lines
4.9 KiB
/* 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
|
|
|