Chris@69: /***********************************************************************
Chris@69: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Chris@69: Redistribution and use in source and binary forms, with or without
Chris@69: modification, are permitted provided that the following conditions
Chris@69: are met:
Chris@69: - Redistributions of source code must retain the above copyright notice,
Chris@69: this list of conditions and the following disclaimer.
Chris@69: - Redistributions in binary form must reproduce the above copyright
Chris@69: notice, this list of conditions and the following disclaimer in the
Chris@69: documentation and/or other materials provided with the distribution.
Chris@69: - Neither the name of Internet Society, IETF or IETF Trust, nor the
Chris@69: names of specific contributors, may be used to endorse or promote
Chris@69: products derived from this software without specific prior written
Chris@69: permission.
Chris@69: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Chris@69: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Chris@69: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Chris@69: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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Chris@69: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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Chris@69: POSSIBILITY OF SUCH DAMAGE.
Chris@69: ***********************************************************************/
Chris@69: 
Chris@69: #ifdef HAVE_CONFIG_H
Chris@69: #include "config.h"
Chris@69: #endif
Chris@69: 
Chris@69: #include "SigProc_FIX.h"
Chris@69: #include "celt_lpc.h"
Chris@69: 
Chris@69: /* Compute autocorrelation */
Chris@69: void silk_autocorr(
Chris@69:     opus_int32                  *results,           /* O    Result (length correlationCount)                            */
Chris@69:     opus_int                    *scale,             /* O    Scaling of the correlation vector                           */
Chris@69:     const opus_int16            *inputData,         /* I    Input data to correlate                                     */
Chris@69:     const opus_int              inputDataSize,      /* I    Length of input                                             */
Chris@69:     const opus_int              correlationCount,   /* I    Number of correlation taps to compute                       */
Chris@69:     int                         arch                /* I    Run-time architecture                                       */
Chris@69: )
Chris@69: {
Chris@69:     opus_int   corrCount;
Chris@69:     corrCount = silk_min_int( inputDataSize, correlationCount );
Chris@69:     *scale = _celt_autocorr(inputData, results, NULL, 0, corrCount-1, inputDataSize, arch);
Chris@69: }