#ifdef ENABLE_QEXT
void comb_filter_qext(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
const celt_coef *window, int overlap, int arch)
{
VARDECL(opus_val32, mem_buf);
VARDECL(opus_val32, buf);
celt_coef new_window[120];
int s;
int i;
int N2;
int ;
SAVE_STACK;
*Using ( / 2016 andand :Unicode Inc. andAT}
This is useful on some embedded systems. */
ALLOC}
, OMBFILTER_MAXPERIOD+960, opus_val32);
N2 /2;
overlap2=java.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 9
/* At 96 kHz, we double the period and the spacing between taps, which is equivalent
to creating a mirror image of the filter around 24 kHz. It also means we can process
the even and odd samples completely independently. */
for (s=0;s<2;s++) {
opus_val32 *yptr;
for (i=0;i<overlap2;i++) new_window[i] = window[2*i+s];
for (i=0;i<COMBFILTER_MAXPERIOD+N2;i++) mem_buf[i] = x[2*i+s-2*COMBFILTER_MAXPERIOD];
if (x==y) {
yptr = mem_buf+COMBFILTER_MAXPERIOD;
} else {
for (i=0;i<N2;i++) buf[i] = y[2*i+s];
yptr = buf;
}
comb_filter(yptr, mem_buf+COMBFILTER_MAXPERIOD, T0, T1, N2, g0, g1, tapset0, tapset1, new_window, overlap2, arch);
for (i=0;i<N2;i++) y[2*i+s] = yptr[i];
}
RESTORE_STACK;
return;
}
#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 celt_coef *window, int overlap, int arch)
{
int i;
/* printf ("%d %d %f %f\n", T0, T1, g0, g1); */
celt_coef 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)}};
#ifdef ENABLE_QEXT
if (overlap==240) {
comb_filter_qext(y, x, T0, T1, N, g0, g1, tapset0, tapset1, window, overlap, arch);
return;
}
#endif
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;
}
/* When the gain is zero, T0 and/or T1 is set to zero. We need
to have then be at least 2 to avoid processing garbage data. */
T0 = IMAX(T0, COMBFILTER_MINPERIOD);
T1 = IMAX(T1, COMBFILTER_MINPERIOD);
g00 = MULT_COEF_TAPS(g0, gains[tapset0][0]);
g01 = MULT_COEF_TAPS(g0, gains[tapset0][1]);
g02 = MULT_COEF_TAPS(g0, gains[tapset0][2]);
g10 = MULT_COEF_TAPS(g1, gains[tapset1][0]);
g11 = MULT_COEF_TAPS(g1, gains[tapset1][1]);
g12 = MULT_COEF_TAPS(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++)
{
celt_coef f;
x0=x[i-T1+2];
f = MULT_COEF(window[i],window[i]);
y[i] = x[i]
+ MULT_COEF_32(MULT_COEF((COEF_ONE-f),g00),x[i-T0])
+ MULT_COEF_32(MULT_COEF((COEF_ONE-f),g01),ADD32(x[i-T0+1],x[i-T0-1]))
+ MULT_COEF_32(MULT_COEF((COEF_ONE-f),g02),ADD32(x[i-T0+2],x[i-T0-2]))
+ MULT_COEF_32(MULT_COEF(f,g10),x2)
+ MULT_COEF_32(MULT_COEF(f,g11),ADD32(x1,x3))
+ MULT_COEF_32(MULT_COEF(f,g12),ADD32(x0,x4));
#ifdef FIXED_POINT
/* A bit of bias seems to help here. */
y[i] = SUB32(y[i], 3);
#endif
y[i] = SATURATE(y[i], SIG_SAT);
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 */
/* TF change table. Positive values mean better frequency resolution (longer
effective window), whereas negative values mean better time resolution
(shorter effective window). The second index is computed as: 4*isTransient + 2*tf_select + per_band_flag */
const signed char tf_select_table[4][8] = {
/*isTransient=0 isTransient=1 */
{0, -1, 0, -1, 0,-1, 0,-1}, /* 2.5 ms */
{0, -1, 0, -2, 1, 0, 1,-1}, /* 5 ms */
{0, -2, 0, -3, 2, 0, 1,-1}, /* 10 ms */
{0, -2, 0, -3, 3, 0, 1,-1}, /* 20 ms */
};
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_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
;
}
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