116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/* Copyright (c) 2007-2008 CSIRO
|
|
Copyright (c) 2007-2009 Xiph.Org Foundation
|
|
Written by Jean-Marc Valin */
|
|
/*
|
|
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.
|
|
|
|
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 COPYRIGHT OWNER
|
|
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.
|
|
*/
|
|
|
|
#ifndef __VQ_MIPSR1_H__
|
|
#define __VQ_MIPSR1_H__
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "mathops.h"
|
|
#include "arch.h"
|
|
|
|
#define OVERRIDE_vq_exp_rotation1
|
|
static void exp_rotation1(celt_norm *X, int len, int stride, opus_val16 c, opus_val16 s)
|
|
{
|
|
int i;
|
|
opus_val16 ms;
|
|
celt_norm *Xptr;
|
|
Xptr = X;
|
|
ms = NEG16(s);
|
|
for (i=0;i<len-stride;i++)
|
|
{
|
|
celt_norm x1, x2;
|
|
x1 = Xptr[0];
|
|
x2 = Xptr[stride];
|
|
Xptr[stride] = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x2), s, x1), 15));
|
|
*Xptr++ = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x1), ms, x2), 15));
|
|
}
|
|
Xptr = &X[len-2*stride-1];
|
|
for (i=len-2*stride-1;i>=0;i--)
|
|
{
|
|
celt_norm x1, x2;
|
|
x1 = Xptr[0];
|
|
x2 = Xptr[stride];
|
|
Xptr[stride] = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x2), s, x1), 15));
|
|
*Xptr-- = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x1), ms, x2), 15));
|
|
}
|
|
}
|
|
|
|
#define OVERRIDE_renormalise_vector
|
|
void renormalise_vector(celt_norm *X, int N, opus_val16 gain, int arch)
|
|
{
|
|
int i;
|
|
#ifdef FIXED_POINT
|
|
int k;
|
|
#endif
|
|
opus_val32 E = EPSILON;
|
|
opus_val16 g;
|
|
opus_val32 t;
|
|
celt_norm *xptr = X;
|
|
int X0, X1;
|
|
|
|
(void)arch;
|
|
|
|
asm volatile("mult $ac1, $0, $0");
|
|
asm volatile("MTLO %0, $ac1" : :"r" (E));
|
|
/*if(N %4)
|
|
printf("error");*/
|
|
for (i=0;i<N-2;i+=2)
|
|
{
|
|
X0 = (int)*xptr++;
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" (X0), "r" (X0));
|
|
|
|
X1 = (int)*xptr++;
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" (X1), "r" (X1));
|
|
}
|
|
|
|
for (;i<N;i++)
|
|
{
|
|
X0 = (int)*xptr++;
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" (X0), "r" (X0));
|
|
}
|
|
|
|
asm volatile("MFLO %0, $ac1" : "=r" (E));
|
|
#ifdef FIXED_POINT
|
|
k = celt_ilog2(E)>>1;
|
|
#endif
|
|
t = VSHR32(E, 2*(k-7));
|
|
g = MULT16_16_P15(celt_rsqrt_norm(t),gain);
|
|
|
|
xptr = X;
|
|
for (i=0;i<N;i++)
|
|
{
|
|
*xptr = EXTRACT16(PSHR32(MULT16_16(g, *xptr), k+1));
|
|
xptr++;
|
|
}
|
|
/*return celt_sqrt(E);*/
|
|
}
|
|
|
|
#endif /* __VQ_MIPSR1_H__ */
|