diff options
Diffstat (limited to 'drivers/opus/silk/A2NLSF.c')
| -rw-r--r-- | drivers/opus/silk/A2NLSF.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/opus/silk/A2NLSF.c b/drivers/opus/silk/A2NLSF.c index 18b0e3092d..38dbefc3bf 100644 --- a/drivers/opus/silk/A2NLSF.c +++ b/drivers/opus/silk/A2NLSF.c @@ -30,10 +30,7 @@ POSSIBILITY OF SUCH DAMAGE. /* A piecewise linear approximation maps LSF <-> cos(LSF) */ /* Therefore the result is not accurate NLSFs, but the two */ /* functions are accurate inverses of each other */ - -#ifdef OPUS_ENABLED #include "opus/opus_config.h" -#endif #include "opus/silk/SigProc_FIX.h" #include "opus/silk/tables.h" @@ -71,8 +68,23 @@ static OPUS_INLINE opus_int32 silk_A2NLSF_eval_poly( /* return the polynomial ev y32 = p[ dd ]; /* Q16 */ x_Q16 = silk_LSHIFT( x, 4 ); - for( n = dd - 1; n >= 0; n-- ) { - y32 = silk_SMLAWW( p[ n ], y32, x_Q16 ); /* Q16 */ + + if ( opus_likely( 8 == dd ) ) + { + y32 = silk_SMLAWW( p[ 7 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 6 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 5 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 4 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 3 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 2 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 1 ], y32, x_Q16 ); + y32 = silk_SMLAWW( p[ 0 ], y32, x_Q16 ); + } + else + { + for( n = dd - 1; n >= 0; n-- ) { + y32 = silk_SMLAWW( p[ n ], y32, x_Q16 ); /* Q16 */ + } } return y32; } |