152 lines
4.9 KiB
C++
152 lines
4.9 KiB
C++
/* Copyright (c) 2007-2008 CSIRO
|
|
Copyright (c) 2007-2010 Xiph.Org Foundation
|
|
Copyright (c) 2008 Gregory Maxwell
|
|
Written by Jean-Marc Valin and Gregory Maxwell */
|
|
/*
|
|
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 __CELT_MIPSR1_H__
|
|
#define __CELT_MIPSR1_H__
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#define CELT_C
|
|
|
|
#include "os_support.h"
|
|
#include "mdct.h"
|
|
#include <math.h>
|
|
#include "celt.h"
|
|
#include "pitch.h"
|
|
#include "bands.h"
|
|
#include "modes.h"
|
|
#include "entcode.h"
|
|
#include "quant_bands.h"
|
|
#include "rate.h"
|
|
#include "stack_alloc.h"
|
|
#include "mathops.h"
|
|
#include "float_cast.h"
|
|
#include <stdarg.h>
|
|
#include "celt_lpc.h"
|
|
#include "vq.h"
|
|
|
|
#define OVERRIDE_comb_filter
|
|
void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
|
|
opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
|
|
const opus_val16 *window, int overlap, int arch)
|
|
{
|
|
int i;
|
|
opus_val32 x0, x1, x2, x3, x4;
|
|
|
|
(void)arch;
|
|
|
|
/* printf ("%d %d %f %f\n", T0, T1, g0, g1); */
|
|
opus_val16 g00, g01, g02, g10, g11, g12;
|
|
static const opus_val16 gains[3][3] = {
|
|
{QCONST16(0.3066406250f, 15), QCONST16(0.2170410156f, 15), QCONST16(0.1296386719f, 15)},
|
|
{QCONST16(0.4638671875f, 15), QCONST16(0.2680664062f, 15), QCONST16(0.f, 15)},
|
|
{QCONST16(0.7998046875f, 15), QCONST16(0.1000976562f, 15), QCONST16(0.f, 15)}};
|
|
|
|
if (g0==0 && g1==0)
|
|
{
|
|
/* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
|
|
if (x!=y)
|
|
OPUS_MOVE(y, x, N);
|
|
return;
|
|
}
|
|
|
|
g00 = MULT16_16_P15(g0, gains[tapset0][0]);
|
|
g01 = MULT16_16_P15(g0, gains[tapset0][1]);
|
|
g02 = MULT16_16_P15(g0, gains[tapset0][2]);
|
|
g10 = MULT16_16_P15(g1, gains[tapset1][0]);
|
|
g11 = MULT16_16_P15(g1, gains[tapset1][1]);
|
|
g12 = MULT16_16_P15(g1, gains[tapset1][2]);
|
|
x1 = x[-T1+1];
|
|
x2 = x[-T1 ];
|
|
x3 = x[-T1-1];
|
|
x4 = x[-T1-2];
|
|
/* If the filter didn't change, we don't need the overlap */
|
|
if (g0==g1 && T0==T1 && tapset0==tapset1)
|
|
overlap=0;
|
|
|
|
for (i=0;i<overlap;i++)
|
|
{
|
|
opus_val16 f;
|
|
opus_val32 res;
|
|
f = MULT16_16_Q15(window[i],window[i]);
|
|
x0= x[i-T1+2];
|
|
|
|
asm volatile("MULT $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15((Q15ONE-f),g00)), "r" ((int)x[i-T0]));
|
|
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15((Q15ONE-f),g01)), "r" ((int)ADD32(x[i-T0-1],x[i-T0+1])));
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15((Q15ONE-f),g02)), "r" ((int)ADD32(x[i-T0-2],x[i-T0+2])));
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15(f,g10)), "r" ((int)x2));
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15(f,g11)), "r" ((int)ADD32(x3,x1)));
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)MULT16_16_Q15(f,g12)), "r" ((int)ADD32(x4,x0)));
|
|
|
|
asm volatile("EXTR.W %0,$ac1, %1" : "=r" (res): "i" (15));
|
|
|
|
y[i] = x[i] + res;
|
|
|
|
x4=x3;
|
|
x3=x2;
|
|
x2=x1;
|
|
x1=x0;
|
|
}
|
|
|
|
x4 = x[i-T1-2];
|
|
x3 = x[i-T1-1];
|
|
x2 = x[i-T1];
|
|
x1 = x[i-T1+1];
|
|
|
|
if (g1==0)
|
|
{
|
|
/* OPT: Happens to work without the OPUS_MOVE(), but only because the current encoder already copies x to y */
|
|
if (x!=y)
|
|
OPUS_MOVE(y+overlap, x+overlap, N-overlap);
|
|
return;
|
|
}
|
|
|
|
for (i=overlap;i<N;i++)
|
|
{
|
|
opus_val32 res;
|
|
x0=x[i-T1+2];
|
|
|
|
asm volatile("MULT $ac1, %0, %1" : : "r" ((int)g10), "r" ((int)x2));
|
|
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)g11), "r" ((int)ADD32(x3,x1)));
|
|
asm volatile("MADD $ac1, %0, %1" : : "r" ((int)g12), "r" ((int)ADD32(x4,x0)));
|
|
asm volatile("EXTR.W %0,$ac1, %1" : "=r" (res): "i" (15));
|
|
y[i] = x[i] + res;
|
|
x4=x3;
|
|
x3=x2;
|
|
x2=x1;
|
|
x1=x0;
|
|
}
|
|
}
|
|
|
|
#endif /* __CELT_MIPSR1_H__ */
|