1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/media/libopus/silk/float/scale_copy_vector_FLP.c Wed Dec 31 06:09:35 2014 +0100 1.3 @@ -0,0 +1,57 @@ 1.4 +/*********************************************************************** 1.5 +Copyright (c) 2006-2011, Skype Limited. All rights reserved. 1.6 +Redistribution and use in source and binary forms, with or without 1.7 +modification, are permitted provided that the following conditions 1.8 +are met: 1.9 +- Redistributions of source code must retain the above copyright notice, 1.10 +this list of conditions and the following disclaimer. 1.11 +- Redistributions in binary form must reproduce the above copyright 1.12 +notice, this list of conditions and the following disclaimer in the 1.13 +documentation and/or other materials provided with the distribution. 1.14 +- Neither the name of Internet Society, IETF or IETF Trust, nor the 1.15 +names of specific contributors, may be used to endorse or promote 1.16 +products derived from this software without specific prior written 1.17 +permission. 1.18 +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 1.19 +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1.20 +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1.21 +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 1.22 +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 1.23 +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 1.24 +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 1.25 +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 1.26 +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 1.27 +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1.28 +POSSIBILITY OF SUCH DAMAGE. 1.29 +***********************************************************************/ 1.30 + 1.31 +#ifdef HAVE_CONFIG_H 1.32 +#include "config.h" 1.33 +#endif 1.34 + 1.35 +#include "SigProc_FLP.h" 1.36 + 1.37 +/* copy and multiply a vector by a constant */ 1.38 +void silk_scale_copy_vector_FLP( 1.39 + silk_float *data_out, 1.40 + const silk_float *data_in, 1.41 + silk_float gain, 1.42 + opus_int dataSize 1.43 +) 1.44 +{ 1.45 + opus_int i, dataSize4; 1.46 + 1.47 + /* 4x unrolled loop */ 1.48 + dataSize4 = dataSize & 0xFFFC; 1.49 + for( i = 0; i < dataSize4; i += 4 ) { 1.50 + data_out[ i + 0 ] = gain * data_in[ i + 0 ]; 1.51 + data_out[ i + 1 ] = gain * data_in[ i + 1 ]; 1.52 + data_out[ i + 2 ] = gain * data_in[ i + 2 ]; 1.53 + data_out[ i + 3 ] = gain * data_in[ i + 3 ]; 1.54 + } 1.55 + 1.56 + /* any remaining elements */ 1.57 + for( ; i < dataSize; i++ ) { 1.58 + data_out[ i ] = gain * data_in[ i ]; 1.59 + } 1.60 +}