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27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 #include "main.h"
33
34 /* Interpolate two vectors */
silk_interpolate(opus_int16 xi[MAX_LPC_ORDER],const opus_int16 x0[MAX_LPC_ORDER],const opus_int16 x1[MAX_LPC_ORDER],const opus_int ifact_Q2,const opus_int d)35 void silk_interpolate(
36 opus_int16 xi[ MAX_LPC_ORDER ], /* O interpolated vector */
37 const opus_int16 x0[ MAX_LPC_ORDER ], /* I first vector */
38 const opus_int16 x1[ MAX_LPC_ORDER ], /* I second vector */
39 const opus_int ifact_Q2, /* I interp. factor, weight on 2nd vector */
40 const opus_int d /* I number of parameters */
41 )
42 {
43 opus_int i;
44
45 silk_assert( ifact_Q2 >= 0 );
46 silk_assert( ifact_Q2 <= 4 );
47
48 for( i = 0; i < d; i++ ) {
49 xi[ i ] = (opus_int16)silk_ADD_RSHIFT( x0[ i ], silk_SMULBB( x1[ i ] - x0[ i ], ifact_Q2 ), 2 );
50 }
51 }
52