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