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4 modification, are permitted provided that the following conditions
5 are met:
6 - Redistributions of source code must retain the above copyright notice,
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8 - Redistributions in binary form must reproduce the above copyright
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15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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26 ***********************************************************************/
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 */
silk_scale_copy_vector16(opus_int16 * data_out,const opus_int16 * data_in,opus_int32 gain_Q16,const opus_int dataSize)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 )
42 {
43 opus_int i;
44 opus_int32 tmp32;
45
46 for( i = 0; i < dataSize; i++ ) {
47 tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] );
48 data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 );
49 }
50 }
51
52 /* Multiply a vector by a constant */
silk_scale_vector32_Q26_lshift_18(opus_int32 * data1,opus_int32 gain_Q26,opus_int dataSize)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 */
57 )
58 {
59 opus_int i;
60
61 for( i = 0; i < dataSize; i++ ) {
62 data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) ); /* OUTPUT: Q18 */
63 }
64 }
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. */
silk_inner_prod_aligned(const opus_int16 * const inVec1,const opus_int16 * const inVec2,const opus_int len,int arch)71 opus_int32 silk_inner_prod_aligned(
72 const opus_int16 *const inVec1, /* I input vector 1 */
73 const opus_int16 *const inVec2, /* I input vector 2 */
74 const opus_int len, /* I vector lengths */
75 int arch /* I Run-time architecture */
76 )
77 {
78 #ifdef FIXED_POINT
79 return celt_inner_prod(inVec1, inVec2, len, arch);
80 #else
81 opus_int i;
82 opus_int32 sum = 0;
83 for( i = 0; i < len; i++ ) {
84 sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] );
85 }
86 return sum;
87 #endif
88 }
89
silk_inner_prod16_aligned_64_c(const opus_int16 * inVec1,const opus_int16 * inVec2,const opus_int len)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;
98 for( i = 0; i < len; i++ ) {
99 sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
100 }
101 return sum;
102 }
103