cannam@154: /***********************************************************************
cannam@154: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
cannam@154: Redistribution and use in source and binary forms, with or without
cannam@154: modification, are permitted provided that the following conditions
cannam@154: are met:
cannam@154: - Redistributions of source code must retain the above copyright notice,
cannam@154: this list of conditions and the following disclaimer.
cannam@154: - Redistributions in binary form must reproduce the above copyright
cannam@154: notice, this list of conditions and the following disclaimer in the
cannam@154: documentation and/or other materials provided with the distribution.
cannam@154: - Neither the name of Internet Society, IETF or IETF Trust, nor the
cannam@154: names of specific contributors, may be used to endorse or promote
cannam@154: products derived from this software without specific prior written
cannam@154: permission.
cannam@154: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cannam@154: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cannam@154: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
cannam@154: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
cannam@154: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
cannam@154: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
cannam@154: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
cannam@154: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
cannam@154: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
cannam@154: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
cannam@154: POSSIBILITY OF SUCH DAMAGE.
cannam@154: ***********************************************************************/
cannam@154: 
cannam@154: #ifdef HAVE_CONFIG_H
cannam@154: #include "config.h"
cannam@154: #endif
cannam@154: 
cannam@154: #include "SigProc_FIX.h"
cannam@154: #include "pitch.h"
cannam@154: 
cannam@154: /* Copy and multiply a vector by a constant */
cannam@154: void silk_scale_copy_vector16(
cannam@154:     opus_int16                  *data_out,
cannam@154:     const opus_int16            *data_in,
cannam@154:     opus_int32                  gain_Q16,           /* I    Gain in Q16                                                 */
cannam@154:     const opus_int              dataSize            /* I    Length                                                      */
cannam@154: )
cannam@154: {
cannam@154:     opus_int  i;
cannam@154:     opus_int32 tmp32;
cannam@154: 
cannam@154:     for( i = 0; i < dataSize; i++ ) {
cannam@154:         tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] );
cannam@154:         data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 );
cannam@154:     }
cannam@154: }
cannam@154: 
cannam@154: /* Multiply a vector by a constant */
cannam@154: void silk_scale_vector32_Q26_lshift_18(
cannam@154:     opus_int32                  *data1,             /* I/O  Q0/Q18                                                      */
cannam@154:     opus_int32                  gain_Q26,           /* I    Q26                                                         */
cannam@154:     opus_int                    dataSize            /* I    length                                                      */
cannam@154: )
cannam@154: {
cannam@154:     opus_int  i;
cannam@154: 
cannam@154:     for( i = 0; i < dataSize; i++ ) {
cannam@154:         data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) );    /* OUTPUT: Q18 */
cannam@154:     }
cannam@154: }
cannam@154: 
cannam@154: /* sum = for(i=0;i<len;i++)inVec1[i]*inVec2[i];      ---        inner product   */
cannam@154: /* Note for ARM asm:                                                            */
cannam@154: /*        * inVec1 and inVec2 should be at least 2 byte aligned.                */
cannam@154: /*        * len should be positive 16bit integer.                               */
cannam@154: /*        * only when len>6, memory access can be reduced by half.              */
cannam@154: opus_int32 silk_inner_prod_aligned(
cannam@154:     const opus_int16 *const     inVec1,             /*    I input vector 1                                              */
cannam@154:     const opus_int16 *const     inVec2,             /*    I input vector 2                                              */
cannam@154:     const opus_int              len,                /*    I vector lengths                                              */
cannam@154:     int                         arch                /*    I Run-time architecture                                       */
cannam@154: )
cannam@154: {
cannam@154: #ifdef FIXED_POINT
cannam@154:    return celt_inner_prod(inVec1, inVec2, len, arch);
cannam@154: #else
cannam@154:     opus_int   i;
cannam@154:     opus_int32 sum = 0;
cannam@154:     for( i = 0; i < len; i++ ) {
cannam@154:         sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] );
cannam@154:     }
cannam@154:     return sum;
cannam@154: #endif
cannam@154: }
cannam@154: 
cannam@154: opus_int64 silk_inner_prod16_aligned_64_c(
cannam@154:     const opus_int16            *inVec1,            /*    I input vector 1                                              */
cannam@154:     const opus_int16            *inVec2,            /*    I input vector 2                                              */
cannam@154:     const opus_int              len                 /*    I vector lengths                                              */
cannam@154: )
cannam@154: {
cannam@154:     opus_int   i;
cannam@154:     opus_int64 sum = 0;
cannam@154:     for( i = 0; i < len; i++ ) {
cannam@154:         sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
cannam@154:     }
cannam@154:     return sum;
cannam@154: }