Lines Matching defs:lshift
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27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 #include "SigProc_FIX.h"
33 #include "pitch.h"
34
35 /* Copy and multiply a vector by a constant */
36 void silk_scale_copy_vector16(
37 opus_int16 *data_out,
38 const opus_int16 *data_in,
39 …opus_int32 gain_Q16, /* I Gain in Q16 …
40 …const opus_int dataSize /* I Length …
41 ) in silk_CLZ64()
42 { in silk_CLZ64()
43 opus_int i; in silk_CLZ64()
44 opus_int32 tmp32; in silk_CLZ64()
45 in silk_CLZ64()
46 for( i = 0; i < dataSize; i++ ) { in silk_CLZ64()
47 tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] ); in silk_CLZ64()
48 data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 ); in silk_CLZ64()
49 } in silk_CLZ64()
50 } in silk_CLZ64()
51
52 /* Multiply a vector by a constant */
53 void silk_scale_vector32_Q26_lshift_18(
54 …opus_int32 *data1, /* I/O Q0/Q18 …
55 …opus_int32 gain_Q26, /* I Q26 …
56 …opus_int dataSize /* I length … in silk_CLZ_FRAC()
57 ) in silk_CLZ_FRAC()
58 { in silk_CLZ_FRAC()
59 opus_int i; in silk_CLZ_FRAC()
60 in silk_CLZ_FRAC()
61 for( i = 0; i < dataSize; i++ ) { in silk_CLZ_FRAC()
62 …data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) … in silk_CLZ_FRAC()
63 } in silk_CLZ_FRAC()
64 } in silk_CLZ_FRAC()
65
66 /* sum = for(i=0;i<len;i++)inVec1[i]*inVec2[i]; --- inner product */
67 /* Note for ARM asm: */
68 /* * inVec1 and inVec2 should be at least 2 byte aligned. */
69 /* * len should be positive 16bit integer. */
70 /* * only when len>6, memory access can be reduced by half. */
71 opus_int32 silk_inner_prod_aligned( in silk_SQRT_APPROX()
72 …const opus_int16 *const inVec1, /* I input vector 1 … in silk_SQRT_APPROX()
73 …const opus_int16 *const inVec2, /* I input vector 2 … in silk_SQRT_APPROX()
74 …const opus_int len, /* I vector lengths … in silk_SQRT_APPROX()
75 …int arch /* I Run-time architecture … in silk_SQRT_APPROX()
76 ) in silk_SQRT_APPROX()
77 { in silk_SQRT_APPROX()
78 #ifdef FIXED_POINT in silk_SQRT_APPROX()
79 return celt_inner_prod(inVec1, inVec2, len, arch); in silk_SQRT_APPROX()
80 #else in silk_SQRT_APPROX()
81 opus_int i; in silk_SQRT_APPROX()
82 opus_int32 sum = 0; in silk_SQRT_APPROX()
83 for( i = 0; i < len; i++ ) { in silk_SQRT_APPROX()
84 sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] ); in silk_SQRT_APPROX()
85 } in silk_SQRT_APPROX()
86 return sum; in silk_SQRT_APPROX()
87 #endif in silk_SQRT_APPROX()
88 } in silk_SQRT_APPROX()
89
90 opus_int64 silk_inner_prod16_aligned_64_c(
91 …const opus_int16 *inVec1, /* I input vector 1 …
92 …const opus_int16 *inVec2, /* I input vector 2 …
93 …const opus_int len /* I vector lengths …
94 )
95 {
96 opus_int i;
97 opus_int64 sum = 0; in silk_DIV32_varQ()
98 for( i = 0; i < len; i++ ) {
99 sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
100 }
101 return sum;
102 }