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-rw-r--r--src/opus-1.0.2/silk/fixed/autocorr_FIX.c76
1 files changed, 0 insertions, 76 deletions
diff --git a/src/opus-1.0.2/silk/fixed/autocorr_FIX.c b/src/opus-1.0.2/silk/fixed/autocorr_FIX.c
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--- a/src/opus-1.0.2/silk/fixed/autocorr_FIX.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/***********************************************************************
-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"
-
-/* Compute autocorrelation */
-void silk_autocorr(
- opus_int32 *results, /* O Result (length correlationCount) */
- opus_int *scale, /* O Scaling of the correlation vector */
- const opus_int16 *inputData, /* I Input data to correlate */
- const opus_int inputDataSize, /* I Length of input */
- const opus_int correlationCount /* I Number of correlation taps to compute */
-)
-{
- opus_int i, lz, nRightShifts, corrCount;
- opus_int64 corr64;
-
- corrCount = silk_min_int( inputDataSize, correlationCount );
-
- /* compute energy (zero-lag correlation) */
- corr64 = silk_inner_prod16_aligned_64( inputData, inputData, inputDataSize );
-
- /* deal with all-zero input data */
- corr64 += 1;
-
- /* number of leading zeros */
- lz = silk_CLZ64( corr64 );
-
- /* scaling: number of right shifts applied to correlations */
- nRightShifts = 35 - lz;
- *scale = nRightShifts;
-
- if( nRightShifts <= 0 ) {
- results[ 0 ] = silk_LSHIFT( (opus_int32)silk_CHECK_FIT32( corr64 ), -nRightShifts );
-
- /* compute remaining correlations based on int32 inner product */
- for( i = 1; i < corrCount; i++ ) {
- results[ i ] = silk_LSHIFT( silk_inner_prod_aligned( inputData, inputData + i, inputDataSize - i ), -nRightShifts );
- }
- } else {
- results[ 0 ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( corr64, nRightShifts ) );
-
- /* compute remaining correlations based on int64 inner product */
- for( i = 1; i < corrCount; i++ ) {
- results[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_inner_prod16_aligned_64( inputData, inputData + i, inputDataSize - i ), nRightShifts ) );
- }
- }
-}