mirror of
https://github.com/Relintai/pandemonium_engine_minimal.git
synced 2024-12-28 18:57:15 +01:00
300 lines
8.1 KiB
C
300 lines
8.1 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.
|
|
*/
|
|
|
|
#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"
|
|
|
|
#ifndef PACKAGE_VERSION
|
|
#define PACKAGE_VERSION "unknown"
|
|
#endif
|
|
|
|
#if defined(MIPSr1_ASM)
|
|
#include "mips/celt_mipsr1.h"
|
|
#endif
|
|
|
|
|
|
int resampling_factor(opus_int32 rate)
|
|
{
|
|
int ret;
|
|
switch (rate)
|
|
{
|
|
case 48000:
|
|
ret = 1;
|
|
break;
|
|
case 24000:
|
|
ret = 2;
|
|
break;
|
|
case 16000:
|
|
ret = 3;
|
|
break;
|
|
case 12000:
|
|
ret = 4;
|
|
break;
|
|
case 8000:
|
|
ret = 6;
|
|
break;
|
|
default:
|
|
#ifndef CUSTOM_MODES
|
|
celt_assert(0);
|
|
#endif
|
|
ret = 0;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#if !defined(OVERRIDE_COMB_FILTER_CONST) || defined(NON_STATIC_COMB_FILTER_CONST_C)
|
|
/* This version should be faster on ARM */
|
|
#ifdef OPUS_ARM_ASM
|
|
#ifndef NON_STATIC_COMB_FILTER_CONST_C
|
|
static
|
|
#endif
|
|
void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
|
|
opus_val16 g10, opus_val16 g11, opus_val16 g12)
|
|
{
|
|
opus_val32 x0, x1, x2, x3, x4;
|
|
int i;
|
|
x4 = SHL32(x[-T-2], 1);
|
|
x3 = SHL32(x[-T-1], 1);
|
|
x2 = SHL32(x[-T], 1);
|
|
x1 = SHL32(x[-T+1], 1);
|
|
for (i=0;i<N-4;i+=5)
|
|
{
|
|
opus_val32 t;
|
|
x0=SHL32(x[i-T+2],1);
|
|
t = MAC16_32_Q16(x[i], g10, x2);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
|
|
y[i] = t;
|
|
x4=SHL32(x[i-T+3],1);
|
|
t = MAC16_32_Q16(x[i+1], g10, x1);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x0,x2));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x4,x3));
|
|
y[i+1] = t;
|
|
x3=SHL32(x[i-T+4],1);
|
|
t = MAC16_32_Q16(x[i+2], g10, x0);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x4,x1));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x3,x2));
|
|
y[i+2] = t;
|
|
x2=SHL32(x[i-T+5],1);
|
|
t = MAC16_32_Q16(x[i+3], g10, x4);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x3,x0));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x2,x1));
|
|
y[i+3] = t;
|
|
x1=SHL32(x[i-T+6],1);
|
|
t = MAC16_32_Q16(x[i+4], g10, x3);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x2,x4));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x1,x0));
|
|
y[i+4] = t;
|
|
}
|
|
#ifdef CUSTOM_MODES
|
|
for (;i<N;i++)
|
|
{
|
|
opus_val32 t;
|
|
x0=SHL32(x[i-T+2],1);
|
|
t = MAC16_32_Q16(x[i], g10, x2);
|
|
t = MAC16_32_Q16(t, g11, ADD32(x1,x3));
|
|
t = MAC16_32_Q16(t, g12, ADD32(x0,x4));
|
|
y[i] = t;
|
|
x4=x3;
|
|
x3=x2;
|
|
x2=x1;
|
|
x1=x0;
|
|
}
|
|
#endif
|
|
}
|
|
#else
|
|
#ifndef NON_STATIC_COMB_FILTER_CONST_C
|
|
static
|
|
#endif
|
|
void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
|
|
opus_val16 g10, opus_val16 g11, opus_val16 g12)
|
|
{
|
|
opus_val32 x0, x1, x2, x3, x4;
|
|
int i;
|
|
x4 = x[-T-2];
|
|
x3 = x[-T-1];
|
|
x2 = x[-T];
|
|
x1 = x[-T+1];
|
|
for (i=0;i<N;i++)
|
|
{
|
|
x0=x[i-T+2];
|
|
y[i] = x[i]
|
|
+ MULT16_32_Q15(g10,x2)
|
|
+ MULT16_32_Q15(g11,ADD32(x1,x3))
|
|
+ MULT16_32_Q15(g12,ADD32(x0,x4));
|
|
x4=x3;
|
|
x3=x2;
|
|
x2=x1;
|
|
x1=x0;
|
|
}
|
|
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef 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;
|
|
/* printf ("%d %d %f %f\n", T0, T1, g0, g1); */
|
|
opus_val16 g00, g01, g02, g10, g11, g12;
|
|
opus_val32 x0, x1, x2, x3, x4;
|
|
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;
|
|
x0=x[i-T1+2];
|
|
f = MULT16_16_Q15(window[i],window[i]);
|
|
y[i] = x[i]
|
|
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g00),x[i-T0])
|
|
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g01),ADD32(x[i-T0+1],x[i-T0-1]))
|
|
+ MULT16_32_Q15(MULT16_16_Q15((Q15ONE-f),g02),ADD32(x[i-T0+2],x[i-T0-2]))
|
|
+ MULT16_32_Q15(MULT16_16_Q15(f,g10),x2)
|
|
+ MULT16_32_Q15(MULT16_16_Q15(f,g11),ADD32(x1,x3))
|
|
+ MULT16_32_Q15(MULT16_16_Q15(f,g12),ADD32(x0,x4));
|
|
x4=x3;
|
|
x3=x2;
|
|
x2=x1;
|
|
x1=x0;
|
|
|
|
}
|
|
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;
|
|
}
|
|
|
|
/* Compute the part with the constant filter. */
|
|
comb_filter_const(y+i, x+i, T1, N-i, g10, g11, g12, arch);
|
|
}
|
|
#endif /* OVERRIDE_comb_filter */
|
|
|
|
const signed char tf_select_table[4][8] = {
|
|
{0, -1, 0, -1, 0,-1, 0,-1},
|
|
{0, -1, 0, -2, 1, 0, 1,-1},
|
|
{0, -2, 0, -3, 2, 0, 1,-1},
|
|
{0, -2, 0, -3, 3, 0, 1,-1},
|
|
};
|
|
|
|
|
|
void init_caps(const CELTMode *m,int *cap,int LM,int C)
|
|
{
|
|
int i;
|
|
for (i=0;i<m->nbEBands;i++)
|
|
{
|
|
int N;
|
|
N=(m->eBands[i+1]-m->eBands[i])<<LM;
|
|
cap[i] = (m->cache.caps[m->nbEBands*(2*LM+C-1)+i]+64)*C*N>>2;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
const char *opus_strerror(int error)
|
|
{
|
|
static const char * const error_strings[8] = {
|
|
"success",
|
|
"invalid argument",
|
|
"buffer too small",
|
|
"internal error",
|
|
"corrupted stream",
|
|
"request not implemented",
|
|
"invalid state",
|
|
"memory allocation failed"
|
|
};
|
|
if (error > 0 || error < -7)
|
|
return "unknown error";
|
|
else
|
|
return error_strings[-error];
|
|
}
|
|
|
|
const char *opus_get_version_string(void)
|
|
{
|
|
return "libopus " PACKAGE_VERSION
|
|
/* Applications may rely on the presence of this substring in the version
|
|
string to determine if they have a fixed-point or floating-point build
|
|
at runtime. */
|
|
#ifdef FIXED_POINT
|
|
"-fixed"
|
|
#endif
|
|
#ifdef FUZZING
|
|
"-fuzzing"
|
|
#endif
|
|
;
|
|
}
|