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FS-3486 --resolve update silk

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Brian West committed 2011-08-25 17:25:07 -05:00
1 parent b426ec0bfa
commit fdf74f449f
148 files changed
+2723 -7653
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libs/silk/src/SKP_Silk_Inlines.h
+13 -17
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@@ -1,5 +1,5 @@
/***********************************************************************
Copyright (c) 2006-2010, Skype Limited. All rights reserved.
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, (subject to the limitations in the disclaimer below)
are permitted provided that the following conditions are met:
@@ -57,20 +57,15 @@ SKP_INLINE void SKP_Silk_CLZ_FRAC(SKP_int32 in, /* I: input */
SKP_int32 *lz, /* O: number of leading zeros */
SKP_int32 *frac_Q7) /* O: the 7 bits right after the leading one */
{
SKP_int32 leadingZeros;
SKP_int32 lzeros = SKP_Silk_CLZ32(in);
leadingZeros = SKP_Silk_CLZ32(in);
*lz = leadingZeros;
if( leadingZeros < 24 ) {
*frac_Q7 = SKP_RSHIFT(in, 24 - leadingZeros) & 0x7F;
} else {
*frac_Q7 = SKP_LSHIFT(in, leadingZeros - 24) & 0x7F;
}
* lz = lzeros;
* frac_Q7 = SKP_ROR32(in, 24 - lzeros) & 0x7f;
}
/* Approximation of square root */
/* Accuracy: < +/- 10% for output values > 15 */
/* < +/- 2.5% for output values > 120 */
/* Accuracy: < +/- 10% for output values > 15 */
/* < +/- 2.5% for output values > 120 */
SKP_INLINE SKP_int32 SKP_Silk_SQRT_APPROX(SKP_int32 x)
{
SKP_int32 y, lz, frac_Q7;
@@ -125,9 +120,9 @@ SKP_INLINE SKP_int32 SKP_Silk_norm32(SKP_int32 a) {
/* Divide two int32 values and return result as int32 in a given Q-domain */
SKP_INLINE SKP_int32 SKP_DIV32_varQ( /* O returns a good approximation of "(a32 << Qres) / b32" */
const SKP_int32 a32, /* I numerator (Q0) */
const SKP_int32 b32, /* I denominator (Q0) */
const SKP_int Qres /* I Q-domain of result (>= 0) */
const SKP_int32 a32, /* I numerator (Q0) */
const SKP_int32 b32, /* I denominator (Q0) */
const SKP_int Qres /* I Q-domain of result (>= 0) */
)
{
SKP_int a_headrm, b_headrm, lshift;
@@ -170,14 +165,15 @@ SKP_INLINE SKP_int32 SKP_DIV32_varQ( /* O returns a good approximation of
/* Invert int32 value and return result as int32 in a given Q-domain */
SKP_INLINE SKP_int32 SKP_INVERSE32_varQ( /* O returns a good approximation of "(1 << Qres) / b32" */
const SKP_int32 b32, /* I denominator (Q0) */
const SKP_int Qres /* I Q-domain of result (> 0) */
const SKP_int32 b32, /* I denominator (Q0) */
const SKP_int Qres /* I Q-domain of result (> 0) */
)
{
SKP_int b_headrm, lshift;
SKP_int32 b32_inv, b32_nrm, err_Q32, result;
SKP_assert( b32 != 0 );
SKP_assert( b32 != SKP_int32_MIN ); /* SKP_int32_MIN is not handled by SKP_abs */
SKP_assert( Qres > 0 );
/* Compute number of bits head room and normalize input */
@@ -277,4 +273,4 @@ SKP_INLINE SKP_int32 SKP_Silk_COS_APPROX_Q24( /* O returns approximate
}
#endif
#endif //_SKP_SILK_FIX_INLINES_H_
#endif /*_SKP_SILK_FIX_INLINES_H_*/