96 lines
4.5 KiB
C
96 lines
4.5 KiB
C
/***********************************************************************
|
|
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
- Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
- Neither the name of Internet Society, IETF or IETF Trust, nor the
|
|
names of specific contributors, may be used to endorse or promote
|
|
products derived from this software without specific prior written
|
|
permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
***********************************************************************/
|
|
|
|
#ifdef OPUS_ENABLED
|
|
#include "opus/opus_config.h"
|
|
#endif
|
|
|
|
#include "opus/silk/SigProc_FIX.h"
|
|
|
|
/* Copy and multiply a vector by a constant */
|
|
void silk_scale_copy_vector16(
|
|
opus_int16 *data_out,
|
|
const opus_int16 *data_in,
|
|
opus_int32 gain_Q16, /* I Gain in Q16 */
|
|
const opus_int dataSize /* I Length */
|
|
)
|
|
{
|
|
opus_int i;
|
|
opus_int32 tmp32;
|
|
|
|
for( i = 0; i < dataSize; i++ ) {
|
|
tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] );
|
|
data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 );
|
|
}
|
|
}
|
|
|
|
/* Multiply a vector by a constant */
|
|
void silk_scale_vector32_Q26_lshift_18(
|
|
opus_int32 *data1, /* I/O Q0/Q18 */
|
|
opus_int32 gain_Q26, /* I Q26 */
|
|
opus_int dataSize /* I length */
|
|
)
|
|
{
|
|
opus_int i;
|
|
|
|
for( i = 0; i < dataSize; i++ ) {
|
|
data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) ); /* OUTPUT: Q18 */
|
|
}
|
|
}
|
|
|
|
/* sum = for(i=0;i<len;i++)inVec1[i]*inVec2[i]; --- inner product */
|
|
/* Note for ARM asm: */
|
|
/* * inVec1 and inVec2 should be at least 2 byte aligned. */
|
|
/* * len should be positive 16bit integer. */
|
|
/* * only when len>6, memory access can be reduced by half. */
|
|
opus_int32 silk_inner_prod_aligned(
|
|
const opus_int16 *const inVec1, /* I input vector 1 */
|
|
const opus_int16 *const inVec2, /* I input vector 2 */
|
|
const opus_int len /* I vector lengths */
|
|
)
|
|
{
|
|
opus_int i;
|
|
opus_int32 sum = 0;
|
|
for( i = 0; i < len; i++ ) {
|
|
sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] );
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
opus_int64 silk_inner_prod16_aligned_64(
|
|
const opus_int16 *inVec1, /* I input vector 1 */
|
|
const opus_int16 *inVec2, /* I input vector 2 */
|
|
const opus_int len /* I vector lengths */
|
|
)
|
|
{
|
|
opus_int i;
|
|
opus_int64 sum = 0;
|
|
for( i = 0; i < len; i++ ) {
|
|
sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
|
|
}
|
|
return sum;
|
|
}
|