/usr/include/csound/pstream.h is in libcsound64-dev 1:6.03.2~dfsg-1.
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pstream.h:
Copyright (C) 2001 Richard Dobson
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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
*/
#ifndef __PSTREAM_H_INCLUDED
#define __PSTREAM_H_INCLUDED
/* pstream.h. Implementation of PVOCEX streaming opcodes.
(c) Richard Dobson August 2001
NB pvoc routines based on CARL distribution (Mark Dolson).
This file is licensed according to the terms of the GNU LGPL.
*/
/* opcodes: PROVISIONAL DEFINITIONS
fsig pvsanal ain,ifftsize,ioverlap,iwinsize,iwintype[,iformat,iinit]
iwintype: 0 = HAMMING, 1 = VonHann, 2 = Kaiser(?)
iformat: only PVS_AMP_FREQ (0) supported at present
(TODO: add f-table support for custom window)
( But: really need a param to associate with the window too,
or just use a standard default value...)
fsig pvsfread ktimpt,ifn[,ichan]
asig pvsynth fsig[,iinit]
asig pvsadsyn fsig,inoscs,kfmod[,ibin,ibinoffset,iinit]
ibin: starting bin (defualt 0)
ibinoffset: distance between successive bins (default 1)
kfmod: multiplier; 1 = no change, 2 = up one octave.
fsig pvscross fsrc,fdest,kamp1,kamp2
fsig pvsmaska fsrc,ifn,kdepth
ioverlap,inumbins,iwinsize,iformat pvsinfo fsig
( will need sndinfo supporting pvocex files anyway,
to know numchans, wintype, etc.)
fdest = fsrc
( woo-hoo! operator overloading in Csound!)
( NB an init statement for fsigs is not supported. One day....)
kflag pvsftw fsig,ifna [,ifnf]
pvsftr fsig,ifna [,ifnf]
( this modifies an ~existing~ signal, does not create a new one,
hence no output)
Re iinit: not implemented yet: and I still need to establish
if it's possible...
*/
/* description of an fsig analysis frame*/
enum PVS_WINTYPE {
PVS_WIN_HAMMING = 0,
PVS_WIN_HANN,
PVS_WIN_KAISER,
PVS_WIN_CUSTOM,
PVS_WIN_BLACKMAN,
PVS_WIN_BLACKMAN_EXACT,
PVS_WIN_NUTTALLC3,
PVS_WIN_BHARRIS_3,
PVS_WIN_BHARRIS_MIN,
PVS_WIN_RECT
};
enum PVS_ANALFORMAT {
PVS_AMP_FREQ = 0,
PVS_AMP_PHASE,
PVS_COMPLEX,
PVS_TRACKS /* added VL, 24.06.2005 */
};
typedef struct {
MYFLT re;
MYFLT im;
} CMPLX;
typedef struct pvsdat {
int32 N;
int sliding; /* Flag to indicate sliding case */
int32 NB;
int32 overlap;
int32 winsize;
int wintype;
int32 format; /* fixed for now to AMP:FREQ */
uint32 framecount;
AUXCH frame; /* RWD MUST always be 32bit floats */
/* But not in sliding case when MYFLT */
} PVSDAT;
/* may be no point supporting Kaiser in an opcode unless we can support
the param too but we can have kaiser in a PVOCEX file. */
typedef struct {
OPDS h;
PVSDAT *fsig; /* output signal is an analysis frame */
MYFLT *ain; /* input sig is audio */
MYFLT *fftsize; /* params */
MYFLT *overlap;
MYFLT *winsize;
MYFLT *wintype;
MYFLT *format; /* always PVS_AMP_FREQ at present */
MYFLT *init; /* not yet implemented */
/* internal */
int32 buflen;
float fund,arate;
float RoverTwoPi,TwoPioverR,Fexact;
MYFLT *nextIn;
int32 nI,Ii,IOi; /* need all these ?; double as N and NB */
int32 inptr;
AUXCH input;
AUXCH overlapbuf;
AUXCH analbuf;
AUXCH analwinbuf; /* prewin in SDFT case */
AUXCH oldInPhase;
AUXCH trig;
double *cosine, *sine;
} PVSANAL;
typedef struct {
OPDS h;
MYFLT *aout; /* audio output signal */
PVSDAT *fsig; /* input signal is an analysis frame */
MYFLT *init; /* not yet implemented */
/* internal */
/* check these against fsig vals */
int32 overlap,winsize,fftsize,wintype,format;
/* can we allow variant window tpes? */
int32 buflen;
MYFLT fund,arate;
MYFLT RoverTwoPi,TwoPioverR,Fexact;
MYFLT *nextOut;
int32 nO,Ii,IOi; /* need all these ?*/
int32 outptr;
int32 bin_index; /* for phase normalization across frames */
/* renderer gets all format info from fsig */
AUXCH output;
AUXCH overlapbuf;
AUXCH synbuf;
AUXCH analwinbuf; /* may get away with a local alloc and free */
AUXCH synwinbuf;
AUXCH oldOutPhase;
} PVSYNTH;
/* for pvadsyn */
typedef struct {
OPDS h;
MYFLT *aout;
PVSDAT *fsig;
MYFLT *n_oscs;
MYFLT *kfmod;
MYFLT *ibin; /* default 0 */
MYFLT *ibinoffset; /* default 1 */
MYFLT *init; /* not yet implemented */
/* internal */
int32 outptr;
uint32 lastframe;
/* check these against fsig vals */
int32 overlap,winsize,fftsize,wintype,format,noscs;
int32 maxosc;
float one_over_overlap,pi_over_sr, one_over_sr;
float fmod;
AUXCH a;
AUXCH x;
AUXCH y;
AUXCH amps;
AUXCH lastamps;
AUXCH freqs;
AUXCH outbuf;
} PVADS;
/* for pvscross */
typedef struct {
OPDS h;
PVSDAT *fout;
PVSDAT *fsrc;
PVSDAT *fdest;
MYFLT *kamp1;
MYFLT *kamp2;
/* internal */
int32 overlap,winsize,fftsize,wintype,format;
uint32 lastframe;
} PVSCROSS;
/* for pvsmaska */
typedef struct {
OPDS h;
PVSDAT *fout;
PVSDAT *fsrc;
MYFLT *ifn;
MYFLT *kdepth;
/* internal*/
int32 overlap,winsize,fftsize,wintype,format;
uint32 lastframe;
int nwarned,pwarned; /* range errors for kdepth */
FUNC *maskfunc;
} PVSMASKA;
/* for pvsftw, pvsftr */
typedef struct {
OPDS h;
MYFLT *kflag;
PVSDAT *fsrc;
MYFLT *ifna; /* amp, required */
MYFLT *ifnf; /* freq: optional*/
/* internal */
int32 overlap,winsize,fftsize,wintype,format;
uint32 lastframe;
FUNC *outfna, *outfnf;
} PVSFTW;
typedef struct {
OPDS h;
/* no output var*/
PVSDAT *fdest;
MYFLT *ifna; /* amp, may be 0 */
MYFLT *ifnf; /* freq: optional*/
/* internal */
int32 overlap,winsize,fftsize,wintype,format;
uint32 lastframe;
FUNC *infna, *infnf;
MYFLT *ftablea,*ftablef;
} PVSFTR;
/* for pvsfread */
/* wsig pvsread ktimpt,ifilcod */
typedef struct {
OPDS h;
PVSDAT *fout;
MYFLT *kpos;
MYFLT *ifilno;
MYFLT *ichan;
/* internal */
int ptr;
int32 overlap,winsize,fftsize,wintype,format;
uint32 chans, nframes,lastframe,chanoffset,blockalign;
MYFLT arate;
float *membase; /* RWD MUST be 32bit: reads file */
} PVSFREAD;
/* for pvsinfo */
typedef struct {
OPDS h;
MYFLT *ioverlap;
MYFLT *inumbins;
MYFLT *iwinsize;
MYFLT *iformat;
/* internal*/
PVSDAT *fsrc;
} PVSINFO;
typedef struct {
OPDS h;
PVSDAT *fout;
PVSDAT *fsrc;
} FASSIGN;
#endif
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