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Version 0.1.8 from FTP

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@295 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2001-04-24 02:02:21 +00:00
parent ad0aa8091a
commit 3a0a095d15
7 changed files with 205 additions and 68 deletions
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32
codecs/gsm/src/lpc.c
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@@ -14,6 +14,10 @@
#include "gsm.h"
#include "proto.h"
#ifdef K6OPT
#include "k6opt.h"
#endif
#undef P
/*
@@ -44,12 +48,19 @@ static void Autocorrelation P2((s, L_ACF),
/* Search for the maximum.
*/
#ifndef K6OPT
smax = 0;
for (k = 0; k <= 159; k++) {
temp = GSM_ABS( s[k] );
if (temp > smax) smax = temp;
}
#else
{
longword lmax;
lmax = k6maxmin(s,160,NULL);
smax = (lmax > MAX_WORD) ? MAX_WORD : lmax;
}
#endif
/* Computation of the scaling factor.
*/
if (smax == 0) scalauto = 0;
@@ -62,6 +73,7 @@ static void Autocorrelation P2((s, L_ACF),
*/
if (scalauto > 0) {
# ifndef K6OPT
# ifdef USE_FLOAT_MUL
# define SCALE(n) \
@@ -83,6 +95,10 @@ static void Autocorrelation P2((s, L_ACF),
SCALE(4)
}
# undef SCALE
# else /* K6OPT */
k6vsraw(s,160,scalauto);
# endif
}
# ifdef USE_FLOAT_MUL
else for (k = 0; k <= 159; k++) float_s[k] = (float) s[k];
@@ -90,6 +106,7 @@ static void Autocorrelation P2((s, L_ACF),
/* Compute the L_ACF[..].
*/
#ifndef K6OPT
{
# ifdef USE_FLOAT_MUL
register float * sp = float_s;
@@ -136,11 +153,24 @@ static void Autocorrelation P2((s, L_ACF),
for (k = 9; k--; L_ACF[k] <<= 1) ;
}
#else
{
int k;
for (k=0; k<9; k++) {
L_ACF[k] = 2*k6iprod(s,s+k,160-k);
}
}
#endif
/* Rescaling of the array s[0..159]
*/
if (scalauto > 0) {
assert(scalauto <= 4);
#ifndef K6OPT
for (k = 160; k--; *s++ <<= scalauto) ;
# else /* K6OPT */
k6vsllw(s,160,scalauto);
# endif
}
}