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Update opus to 1.3.1 and opusfile to 0.11

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unknown 2019-11-02 11:59:07 -05:00 • committed by Jonathan Mannancheril
parent 8570b9b0c2
commit e00426c512
225 changed files with 10458 additions and 6917 deletions
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37
thirdparty/opus/silk/float/LPC_inv_pred_gain_FLP.c vendored
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@ -31,8 +31,7 @@ POSSIBILITY OF SUCH DAMAGE.
#include "SigProc_FIX.h"
#include "SigProc_FLP.h"
#define RC_THRESHOLD 0.9999f
#include "define.h"
/* compute inverse of LPC prediction gain, and */
/* test if LPC coefficients are stable (all poles within unit circle) */
@ -43,34 +42,32 @@ silk_float silk_LPC_inverse_pred_gain_FLP( /* O return inverse prediction ga
)
{
opus_int k, n;
double invGain, rc, rc_mult1, rc_mult2;
silk_float Atmp[ 2 ][ SILK_MAX_ORDER_LPC ];
silk_float *Aold, *Anew;
double invGain, rc, rc_mult1, rc_mult2, tmp1, tmp2;
silk_float Atmp[ SILK_MAX_ORDER_LPC ];
Anew = Atmp[ order & 1 ];
silk_memcpy( Anew, A, order * sizeof(silk_float) );
silk_memcpy( Atmp, A, order * sizeof(silk_float) );
invGain = 1.0;
for( k = order - 1; k > 0; k-- ) {
rc = -Anew[ k ];
if( rc > RC_THRESHOLD || rc < -RC_THRESHOLD ) {
rc = -Atmp[ k ];
rc_mult1 = 1.0f - rc * rc;
invGain *= rc_mult1;
if( invGain * MAX_PREDICTION_POWER_GAIN < 1.0f ) {
return 0.0f;
}
rc_mult1 = 1.0f - rc * rc;
rc_mult2 = 1.0f / rc_mult1;
invGain *= rc_mult1;
/* swap pointers */
Aold = Anew;
Anew = Atmp[ k & 1 ];
for( n = 0; n < k; n++ ) {
Anew[ n ] = (silk_float)( ( Aold[ n ] - Aold[ k - n - 1 ] * rc ) * rc_mult2 );
for( n = 0; n < (k + 1) >> 1; n++ ) {
tmp1 = Atmp[ n ];
tmp2 = Atmp[ k - n - 1 ];
Atmp[ n ] = (silk_float)( ( tmp1 - tmp2 * rc ) * rc_mult2 );
Atmp[ k - n - 1 ] = (silk_float)( ( tmp2 - tmp1 * rc ) * rc_mult2 );
}
}
rc = -Anew[ 0 ];
if( rc > RC_THRESHOLD || rc < -RC_THRESHOLD ) {
return 0.0f;
}
rc = -Atmp[ 0 ];
rc_mult1 = 1.0f - rc * rc;
invGain *= rc_mult1;
if( invGain * MAX_PREDICTION_POWER_GAIN < 1.0f ) {
return 0.0f;
}
return (silk_float)invGain;
}