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/*
dsputil.h:
Copyright (C) 1991 Dan Ellis, Barry Vercoe, John ffitch,
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
/****************************************************************/
/* dsputil.h */
/* DSP utility functions for Csound - dispfft and pvoc */
/* Header file - just declarations */
/* 20apr90 dpwe */
/****************************************************************/
#define SPTS (16) /* SINC TABLE: How many points in each lobe */
#define SPDS (6) /* (was 8) How many sinc lobes to go out */
#define SBW 0.9 /* To compensate for short sinc, reduce bandw */
/* Predeclare static supporting functions */
void Polar2Real_PVOC(CSOUND *, MYFLT *, int32_t);
void RewrapPhase(MYFLT *, int32, MYFLT *);
void FrqToPhase(MYFLT *, int32, MYFLT, MYFLT, MYFLT);
void FetchIn(float *, MYFLT *, int32, MYFLT);
void ApplyHalfWin(MYFLT *, MYFLT *, int32);
void addToCircBuf(MYFLT *, MYFLT *, int32, int32, int32);
void writeClrFromCircBuf(MYFLT *, MYFLT *, int32, int32, int32);
void UDSample(PVOC_GLOBALS *, MYFLT *, MYFLT, MYFLT *, int32, int32, MYFLT);
void MakeSinc(PVOC_GLOBALS *);
void PreWarpSpec(MYFLT *, int32, MYFLT, MYFLT *);
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