| /*********************************************************************** |
| 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 HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "SigProc_FIX.h" |
| #include "pitch.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 */ |
| int arch /* I Run-time architecture */ |
| ) |
| { |
| #ifdef FIXED_POINT |
| return celt_inner_prod(inVec1, inVec2, len, arch); |
| #else |
| opus_int i; |
| opus_int32 sum = 0; |
| for( i = 0; i < len; i++ ) { |
| sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] ); |
| } |
| return sum; |
| #endif |
| } |
| |
| opus_int64 silk_inner_prod16_aligned_64_c( |
| 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; |
| } |