michael@0: /* Copyright (c) 2009-2010 Xiph.Org Foundation
michael@0:    Written by Jean-Marc Valin */
michael@0: /*
michael@0:    Redistribution and use in source and binary forms, with or without
michael@0:    modification, are permitted provided that the following conditions
michael@0:    are met:
michael@0: 
michael@0:    - Redistributions of source code must retain the above copyright
michael@0:    notice, this list of conditions and the following disclaimer.
michael@0: 
michael@0:    - Redistributions in binary form must reproduce the above copyright
michael@0:    notice, this list of conditions and the following disclaimer in the
michael@0:    documentation and/or other materials provided with the distribution.
michael@0: 
michael@0:    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0:    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0:    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0:    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
michael@0:    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
michael@0:    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
michael@0:    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
michael@0:    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
michael@0:    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
michael@0:    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
michael@0:    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: */
michael@0: 
michael@0: #ifndef PLC_H
michael@0: #define PLC_H
michael@0: 
michael@0: #include "arch.h"
michael@0: 
michael@0: #define LPC_ORDER 24
michael@0: 
michael@0: void _celt_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
michael@0: 
michael@0: void celt_fir(const opus_val16 *x,
michael@0:          const opus_val16 *num,
michael@0:          opus_val16 *y,
michael@0:          int N,
michael@0:          int ord,
michael@0:          opus_val16 *mem);
michael@0: 
michael@0: void celt_iir(const opus_val32 *x,
michael@0:          const opus_val16 *den,
michael@0:          opus_val32 *y,
michael@0:          int N,
michael@0:          int ord,
michael@0:          opus_val16 *mem);
michael@0: 
michael@0: int _celt_autocorr(const opus_val16 *x, opus_val32 *ac,
michael@0:          const opus_val16 *window, int overlap, int lag, int n, int arch);
michael@0: 
michael@0: #endif /* PLC_H */