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Issue #1890 - Update libopus

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This resolves #1890
This commit is contained in:
Moonchild 2022-05-04 17:03:37 +00:00 • committed by roytam1
commit a8b1099a1e
228 changed files with 10990 additions and 5670 deletions
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40
media/libopus/celt/mathops.h
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@ -38,11 +38,44 @@
#include "entcode.h"
#include "os_support.h"
#define PI 3.141592653f
/* Multiplies two 16-bit fractional values. Bit-exactness of this macro is important */
#define FRAC_MUL16(a,b) ((16384+((opus_int32)(opus_int16)(a)*(opus_int16)(b)))>>15)
unsigned isqrt32(opus_uint32 _val);
/* CELT doesn't need it for fixed-point, by analysis.c does. */
#if !defined(FIXED_POINT) || defined(ANALYSIS_C)
#define cA 0.43157974f
#define cB 0.67848403f
#define cC 0.08595542f
#define cE ((float)PI/2)
static OPUS_INLINE float fast_atan2f(float y, float x) {
float x2, y2;
x2 = x*x;
y2 = y*y;
/* For very small values, we don't care about the answer, so
we can just return 0. */
if (x2 + y2 < 1e-18f)
{
return 0;
}
if(x2<y2){
float den = (y2 + cB*x2) * (y2 + cC*x2);
return -x*y*(y2 + cA*x2) / den + (y<0 ? -cE : cE);
}else{
float den = (x2 + cB*y2) * (x2 + cC*y2);
return x*y*(x2 + cA*y2) / den + (y<0 ? -cE : cE) - (x*y<0 ? -cE : cE);
}
}
#undef cA
#undef cB
#undef cC
#undef cE
#endif
#ifndef OVERRIDE_CELT_MAXABS16
static OPUS_INLINE opus_val32 celt_maxabs16(const opus_val16 *x, int len)
{
@ -80,7 +113,6 @@ static OPUS_INLINE opus_val32 celt_maxabs32(const opus_val32 *x, int len)
#ifndef FIXED_POINT
#define PI 3.141592653f
#define celt_sqrt(x) ((float)sqrt(x))
#define celt_rsqrt(x) (1.f/celt_sqrt(x))
#define celt_rsqrt_norm(x) (celt_rsqrt(x))
@ -105,7 +137,7 @@ static OPUS_INLINE float celt_log2(float x)
} in;
in.f = x;
integer = (in.i>>23)-127;
in.i -= integer<<23;
in.i -= (opus_uint32)integer<<23;
frac = in.f - 1.5f;
frac = -0.41445418f + frac*(0.95909232f
+ frac*(-0.33951290f + frac*0.16541097f));
@ -128,7 +160,7 @@ static OPUS_INLINE float celt_exp2(float x)
/* K0 = 1, K1 = log(2), K2 = 3-4*log(2), K3 = 3*log(2) - 2 */
res.f = 0.99992522f + frac * (0.69583354f
+ frac * (0.22606716f + 0.078024523f*frac));
res.i = (res.i + (integer<<23)) & 0x7fffffff;
res.i = (res.i + ((opus_uint32)integer<<23)) & 0x7fffffff;
return res.f;
}
@ -147,7 +179,7 @@ static OPUS_INLINE float celt_exp2(float x)
/** Integer log in base2. Undefined for zero and negative numbers */
static OPUS_INLINE opus_int16 celt_ilog2(opus_int32 x)
{
celt_assert2(x>0, "celt_ilog2() only defined for strictly positive numbers");
celt_sig_assert(x>0);
return EC_ILOG(x)-1;
}
#endif